Light-emitting display device

Abstract

A light emitting display device includes: a substrate; an anode on the substrate; a pixel defining layer on the anode, having a first opening defined to pass through the pixel defining layer to overlap the anode; a light emitting layer in the first opening of the pixel defining layer; a cathode on the light emitting layer and the pixel defining layer; the packaging layer is located on the cathode; a scattering layer on the encapsulation layer and including scattering particles having a scattering layer opening defined to pass through the scattering layer to at least partially overlap the first opening in a plan view; and a light blocking layer on the scattering layer, having a second opening defined to pass through the light blocking layer to overlap the first opening in a plan view, in which at least one selected from the first opening, the scattering layer opening, and the second opening has an oval planar shape.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0110507 filed on August 23, 2023 and Korean Patent Application No. 10-2024-0009095 filed on January 19, 2024 and all rights arising therefrom, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present disclosure relates to a light-emitting display device. Background Art

[0004] The display device is a device that displays an image, and may include a liquid crystal display (LCD) and an organic light emitting diode display (OLED).

[0005] These display devices are used in various electronic devices such as mobile phones, navigation devices, digital cameras, electronic books, portable game machines, and various terminals.

[0006] A display device such as an organic light emitting display device may have a structure using a flexible substrate to allow the display device to be bent or folded.

[0007] In addition, in small electronic devices such as mobile phones, optical elements such as cameras and optical sensors are formed in a bezel area around a display area. However, as the size of display screens increases, the size of the area surrounding the display area is gradually decreasing, and camera technology that allows optical sensors to be positioned behind the display area is under development. Summary of the invention

[0008] The embodiments are used to reduce the diffraction pattern generated when external light is reflected or to reduce the reflectivity. The embodiments are intended to provide a light-emitting display device that prevents a user from recognizing the diffraction pattern that may be generated when external light is reflected in a scattering layer.

[0009] According to an embodiment, a light-emitting display device includes: a substrate; an anode located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined as passing through the pixel defining layer to overlap with the anode; a light-emitting layer located in the first opening of the pixel defining layer; a cathode located on the light-emitting layer and the pixel defining layer; an encapsulation layer located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and the scattering layer opening is defined as passing through the scattering layer to at least partially overlap with the first opening in a plan view; and a light-blocking layer located on the scattering layer, wherein a second opening is defined as passing through the light-blocking layer to overlap with the first opening in a plan view, wherein at least one selected from the first opening, the scattering layer opening, and the second opening has an oval planar shape.

[0010] In an embodiment, the first opening and the second opening may have a circular plan shape, and the scattering layer opening may have an oval plan shape.

[0011] In an embodiment, the scattering layer opening may contact the first opening and / or the second opening in a plan view.

[0012] In an embodiment, a portion of the first opening may be covered by the scattering layer.

[0013] In an embodiment, each of the planar shapes of the first opening and the second opening may have an oval planar shape.

[0014] In an embodiment, the scattering layer opening may have an oval planar shape.

[0015] In an embodiment, the scattering layer opening and the first opening may coincide with each other in a plan view.

[0016] In an embodiment, the major axis direction of the scattering layer opening may be different from the major axis direction of the first opening and / or the major axis direction of the second opening.

[0017] In an embodiment, the scattering layer opening may have a circular plan shape.

[0018] In an embodiment, a portion of the first opening may be covered by the scattering layer.

[0019] In an embodiment, the oval plan shape may be a plan shape in which at least two elliptical plan shapes having different plan eccentricities are combined.

[0020] According to the embodiment, the light-emitting display device includes: a substrate; a plurality of anodes located on the substrate; a pixel defining layer located on the plurality of anodes, wherein a plurality of first openings are defined to pass through the pixel defining layer to overlap with the plurality of anodes respectively; a plurality of light-emitting layers are respectively located in the plurality of first openings of the pixel defining layer; a cathode located on the plurality of light-emitting layers and the pixel defining layer; an encapsulation layer located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a plurality of scattering layer openings are defined to pass through the scattering layer to overlap with the plurality of first openings respectively in a plan view at least partially; and a light-blocking layer located on the scattering layer, wherein a plurality of second openings are defined to pass through the light-blocking layer to overlap with the plurality of first openings respectively in a plan view, wherein each of the plurality of first openings, the plurality of scattering layer openings and the plurality of second openings is circular in a plan view, and each of the plurality of scattering layer openings is located within a corresponding one of the plurality of first openings in a plan view.

[0021] In an embodiment, the first openings and the scattering layer openings corresponding to each other among the plurality of first openings and the plurality of scattering layer openings may have the same center in a plan view.

[0022] In an embodiment, at least one of the plurality of first openings may not overlap with the plurality of scattering layer openings in a plan view.

[0023] In an embodiment, a light-emitting display device according to the embodiment includes: a substrate; an anode located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined to pass through the pixel defining layer to overlap with the anode; a light-emitting layer located in the first opening of the pixel defining layer; a cathode located on the light-emitting layer and the pixel defining layer; an encapsulation layer located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a scattering layer recess is defined in the scattering layer to at least partially overlap with the first opening in a plan view; and a light-blocking layer located on the scattering layer, wherein a second opening is defined to pass through the light-blocking layer to overlap with the first opening in a plan view, wherein the scattering layer recess is thinner than other portions of the scattering layer.

[0024] In an embodiment, each of the first opening, the scattering layer recess, and the second opening may have a circular plan shape or an oval plan shape.

[0025] In an embodiment, the oval plan shape may be a plan shape in which at least two elliptical plan shapes having different eccentricities are combined.

[0026] According to an embodiment, a light-emitting display device includes: a substrate; an anode located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined as passing through the pixel defining layer to overlap with the anode; a light-emitting layer located in the first opening of the pixel defining layer; a cathode located on the light-emitting layer and the pixel defining layer; an encapsulation layer located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and the scattering layer opening is defined as passing through the scattering layer to at least partially overlap with the first opening in a plan view; and a plurality of color filters located on the scattering layer, wherein the plurality of color filters respectively correspond to different colors, and the plurality of color filters include at least two color filters overlapping each other in a light-blocking region of the color filters, and the second opening is defined as corresponding to an area in which only one color filter among the plurality of color filters is located and overlaps with the first opening in a plan view.

[0027] In an embodiment, each of the first opening, the scattering layer opening, and the second opening may have a circular plan shape or an oval plan shape.

[0028] In an embodiment, the oval plan shape may be a plan shape in which at least two elliptical plan shapes having different plan eccentricities are combined.

[0029] According to the embodiment, reflectivity of external light may be reduced by including a scattering layer so that the external light is scattered.

[0030] According to an embodiment, light scattered and reflected from the scattering layer may generate a diffraction pattern, and various openings may be formed in the scattering layer to prevent a user from seeing the diffraction pattern due to scattering / reflection of external light.

[0031] According to an embodiment, a diffraction pattern of external light may be reduced by forming an opening of a pixel defining layer, an opening of a scattering layer, and an opening of a light blocking layer in various shapes and angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic perspective view illustrating a display device according to an embodiment in a usage environment.

[0033] Figure 2 is an exploded perspective view of a display device according to an embodiment.

[0034] Figure 3 is a schematic cross-sectional view of a display device according to an embodiment.

[0035] Figure 4 is a block diagram of a display device according to an embodiment.

[0036] Figure 5 is a perspective view schematically showing a light emitting display device according to another embodiment.

[0037] Figure 6 is an enlarged plan view of a partial area of ​​a light emitting display device according to an embodiment.

[0038] Figure 7 is a schematic cross-sectional view of a display panel according to an embodiment.

[0039] Figure 8 and Fig. 9 is a plan view of a portion of a display panel according to an embodiment.

[0040] Fig.10 is a table showing characteristics of comparative examples and embodiments.

[0041] Fig.11 is a plan view of a portion of a display panel according to another embodiment.

[0042] Fig.12 : is a table showing the reflection characteristics of the comparative example and the embodiment obtained by photographing them.

[0043] Fig.13 is an enlarged cross-sectional view of a portion of a display panel according to an embodiment.

[0044] Fig.14 is an enlarged cross-sectional view of a portion of a display panel according to a comparative example.

[0045] Figures 15 to 28 is a plan view of a portion of a display panel according to another embodiment.

[0046] Figure 29 to Figure 32 is a plan view of a portion of a display panel according to various modified embodiments.

[0047] Fig.33 : is a diagram showing the angle-dependent reflection characteristics of a light-emitting display device.

[0048] Fig.34 are diagrams showing various angle arrangements according to an embodiment.

[0049] Fig.35 and Fig.36 This is a diagram showing a structure in which ellipses having different eccentricities are combined.

[0050] Fig.37 and Fig.38 is a schematic cross-sectional view of a display panel according to another embodiment.

[0051] Fig.39 is a plan view of a display area including a color filter according to an embodiment.

[0052] Fig.40 and Fig.41 is a schematic cross-sectional view of a display panel according to another embodiment.

[0053] Fig.42 is a plan view showing a color filter of a display area according to another embodiment.

[0054] Fig.43 is a plan view of a portion of a display panel according to another embodiment.

[0055] Fig.44 is a graph showing transmittance versus wavelength for a color filter.

[0056] Fig.45 and Fig.46 is a cross-sectional view of a light emitting display device according to an embodiment. DETAILED DESCRIPTION

[0057] The present invention will now be described more fully hereinafter with reference to the accompanying drawings in which various embodiments are shown. However, the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make this disclosure comprehensive and complete and to fully convey the scope of the present invention to those skilled in the art. The same reference numerals always refer to the same elements.

[0058] It should be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements.

[0059] It will be understood that although the terms "first," "second," "third," etc., may be used herein to describe various elements, components, regions, layers, or sections, these elements, components, regions, layers, or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings herein.

[0060] The terms used herein are only used to describe the purpose of a particular embodiment, and are not intended to be limited. As used herein, "one", "the (described)" and "at least one" do not represent the limitation of quantity, and are intended to include both the singular and the plural, unless the context clearly indicates otherwise. Therefore, the reference to the "described" element after mentioning "one" element in the claim includes one element and a plurality of the elements. For example, "an element" has the same meaning as "at least one element", unless the context clearly indicates otherwise. "At least one" should not be interpreted as being limited to "one". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the listed associated items. It will be further understood that when used in this specification, the term "includes" and / or its variations or "comprising" and / or its variations indicate the existence of the stated features, regions, wholes, steps, operations, elements and / or parts, but does not exclude the existence or addition of one or more other features, regions, wholes, steps, operations, elements, parts and / or its groups.

[0061] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship between one element and another element as illustrated in the figure. It will be understood that relative terms are intended to cover different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in one of the figures is turned over, the element described as being on the "lower" side of the other elements will then be oriented to be on the "upper" side of the other elements. Therefore, the term "lower" can cover both "lower" and "upper" orientations, which depends on the specific orientation of the figure. Similarly, if the device in one of the figures is turned over, the element described as being "below" or "below" of the other elements will then be oriented to be "above" the other elements. Therefore, the terms "below" and "below" can cover both upper and lower orientations.

[0062] Furthermore, throughout the specification, when “in a plan view” is mentioned, this means when the target portion is viewed from above, and when “in a cross section” is mentioned, this means when the cross section of the target portion is cut vertically and viewed from the side.

[0063] In addition, throughout the specification, when "connected" is used, this means not only the case where two or more components are directly connected, but also the case where two or more components are indirectly connected, physically connected or electrically connected through other components, and also means the case where each part that is essentially one can be connected to each other although different names are referenced depending on the position or function.

[0064] In addition, throughout the specification, when a portion such as a wiring, layer, film, area, board or component is referred to as "extending in a first direction or a second direction", this not only means a straight line shape extending in that direction, but also means a structure extending along the first direction or the second direction as a whole and also includes a bent structure, a zigzag structure or a curved structure.

[0065] In addition, electronic devices (e.g., mobile phones, TVs, monitors, and laptop computers) that include the display devices, display panels, etc. described in this specification or display devices, display panels, etc. manufactured by the manufacturing methods described in this specification are not excluded from the scope of rights herein.

[0066] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0067] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It will be further understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0068] Embodiments are described herein with reference to schematically illustrated cross-sectional illustrations of idealized embodiments. Thus, variations in the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are foreseeable. Therefore, the embodiments described herein should not be construed as being limited to the specific shapes of the zones illustrated herein, but should include deviations in shapes due to, for example, manufacturing. For example, a zone illustrated or described as flat may typically have rough and / or nonlinear features. In addition, the illustrated sharp corners may be rounded. Therefore, the zones illustrated in the figures are schematic in nature, and their shapes are not intended to be the precise shapes of the illustrated zones, and are not intended to limit the scope of the claims.

[0069] In the following we will refer to Figure 1 and Figure 2 The structure of an embodiment of a display device is described.

[0070] Figure 1 is a schematic perspective view showing a display device according to an embodiment in a usage environment, and Figure 2 is an exploded perspective view of a display device according to an embodiment.

[0071] refer to Figure 1 The display device 1000 according to the embodiment is a device that displays moving images or still images, and can be used or included not only in portable electronic devices such as mobile phones, smart phones, tablet personal computers (PCs), communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices, and ultra mobile PCs (UMPCs), but also in large electronic devices such as televisions, notebook computers, monitors, billboards, Internet of Things (IOT) devices, etc.

[0072] In addition, the display device 1000 according to the embodiment may be included in or installed in a wearable device such as a smart watch, a watch phone, a glasses type display, and a head mounted display (HMD).

[0073] In addition, the display device 1000 according to the embodiment includes a dashboard of a car, a central information display (CID) placed on the center console or dashboard of the car, an interior mirror display replacing the side-view mirror of the car, or a display placed on the back of the front seats to serve as an entertainment facility for the rear seats of the car.

[0074] For ease of illustration and description, Figure 1 An embodiment is shown in which the display device 1000 is a smart phone.

[0075] The embodiment of the display device 1000 may display an image in the third direction DR3 on a display surface parallel to each of the first direction DR1 and the second direction DR2 .

[0076] The display surface on which the image is displayed may correspond to the front surface of the display device 1000 and the front surface of the cover window WU.

[0077] The images displayed on the display surface may include static images and dynamic images.

[0078] In an embodiment, a front (or top) surface and a rear (or bottom) surface of each member are defined based on a direction in which an image is displayed.

[0079] The front surface and the rear surface are opposite to each other in the third direction DR3, and a normal direction of each of the front surface and the rear surface may be parallel to the third direction DR3.

[0080] The spacing distance between the front surface and the rear surface in the third direction DR3 may correspond to the thickness of the display panel in the third direction DR3. The third direction DR3 may be a thickness direction of the display device 1000.

[0081] The display device 1000 according to the embodiment may detect a user input applied from the outside (refer to Figure 1 hand in the middle).

[0082] The user input may include various types of external input such as a part of the user's body, light, heat, or pressure.

[0083] In an embodiment, Figure 1 As shown in , the user input can be the user's hand applied to the front.

[0084] However, the present invention is not limited thereto.

[0085] The user input may be provided in various forms, and depending on the structure of the display device 1000 , the display device 1000 may also detect the user input applied to the side or back of the display device 1000 .

[0086] refer to Figure 1 and Figure 2 , an embodiment of the display device 1000 may include a cover window WU, a housing HM, a display panel DP, and an optical element ES.

[0087] In an embodiment, the cover window WU and the housing HM may be combined with each other to form an appearance of the display device 1000 .

[0088] The cover window WU may include an insulating panel.

[0089] In an embodiment, for example, the cover window WU may include or be made of glass, plastic, or a combination thereof.

[0090] The front surface of the cover window WU may define the front surface of the display device 1000 .

[0091] The transmission area TA may be an optically transparent area.

[0092] In an embodiment, for example, the transmission area TA may be a region having a visible light transmittance of about 90% or more.

[0093] The blocking area BA may define the shape of the transmission area TA.

[0094] The blocking area BA is adjacent to the transmission area TA and may surround the transmission area TA.

[0095] The blocking area BA may be an area having relatively low light transmittance compared with the transmission area TA.

[0096] The blocking area BA may include an opaque material that blocks light.

[0097] The barrier area BA may have a predetermined color.

[0098] The blocking area BA may be defined by a bezel layer provided separately from the transparent substrate defining the transmission area TA, or may be defined by an ink layer formed by inserting into or coloring the transparent substrate.

[0099] The display panel DP may include a driver 50 and display pixels PX (hereinafter also simply referred to as pixels) that display an image, and the display pixels PX are located in the display area DA and the component area EA.

[0100] The display panel DP may include a front surface including a display area DA, an element area EA, and a non-display area PA.

[0101] In the embodiment, the display area DA and the component area EA are areas where an image is displayed by the pixels PX located therein, and at the same time, the touch sensor (see Figure 4 The TS in the pixel PX may be located at an upper side in the third direction DR3 of the pixel PX and may be an area for detecting an external input.

[0102] The transmission area TA of the cover window WU may at least partially overlap the display area DA and the component area EA of the display panel DP.

[0103] In an embodiment, for example, the transmission area TA may overlap the front surfaces of the display area DA and the component area EA, or may overlap at least a portion of the display area DA and the component area EA.

[0104] Accordingly, the user can view an image through the transmissive area TA, or provide an external input based on the image.

[0105] However, the present invention is not limited thereto.

[0106] In an embodiment, for example, an area where an image is displayed and an area where an external input is detected may be separated from each other.

[0107] The non-display area PA of the display panel DP may at least partially overlap the blocking area BA of the cover window WU.

[0108] The non-display area PA may be an area covered by the blocking area BA.

[0109] The non-display area PA is adjacent to the display area DA and may surround the display area DA.

[0110] In the non-display area PA, an image is not displayed, and a driving circuit or driving wiring for driving may be provided to drive the display area DA.

[0111] The non-display area PA may include a first peripheral area PA1 located outside the display area DA and a second peripheral area PA2 including the driver 50 , the connection wiring, and the bending area.

[0112] In an embodiment, Figure 2 As shown in FIG. 5 , the first peripheral area PA1 may be located on three sides of the display area DA, and the second peripheral area PA2 may be located on the remaining sides of the display area DA.

[0113] In an embodiment, the display panel DP may be assembled in a flat state in which the display area DA, the assembly area EA, and the non-display area PA face the cover window WU.

[0114] However, the present invention is not limited thereto.

[0115] In an embodiment, a portion of the non-display area PA of the display panel DP may be curved.

[0116] In this embodiment, a portion of the non-display area PA is directed toward the back of the display device 1000, so that the blocking area BA visible in front of the display device 1000 can be reduced, and Figure 2 As shown in FIG. 1 , the second peripheral area PA2 can be bent and placed on the rear surface of the display area DA and then assembled.

[0117] In an embodiment, the component area EA of the display panel DP may include a first component area EA1 and a second component area EA2.

[0118] The first and second component areas EA1 and EA2 may be at least partially surrounded by the display area DA.

[0119] In an embodiment, Figure 2As shown in FIG. 1 , the first component area EA1 and the second component area EA2 may be spaced apart from each other, but are not limited thereto, and may be at least partially connected.

[0120] The first component area EA1 and the second component area EA2 may be optical elements using infrared (IR) light, visible light, or sound (see Figure 2 ES in; hereinafter referred to as a component) area.

[0121] In an embodiment, the display area DA (hereinafter also referred to as the main display area) and the component area EA include or are formed of a plurality of light emitting diodes and a plurality of pixel circuit portions, and the plurality of pixel circuit portions generate a light emitting current and transmit it to each of the plurality of light emitting diodes. An embodiment in which the display device is a light emitting display device will be described in detail below, and in the embodiments described herein, the display device may also be referred to as a light emitting display device, and the display panel may also be referred to as a light emitting display panel.

[0122] Here, one light emitting diode and one pixel circuit portion may define a pixel PX.

[0123] One pixel circuit portion and one light emitting diode may be formed in the display area DA and the element area EA in a one-to-one ratio or in a one-to-one correspondence.

[0124] The first component area EA1 may include a transmission portion (eg, an optical sensor area to be described later) through which light and / or sound can pass, and a display portion including a plurality of pixels PX.

[0125] The transmission portion is located between adjacent pixels PX, and includes a layer that enables light and / or sound to pass therethrough.

[0126] The transmissive portion may be located between adjacent pixels PX in the first component area EA1, or a light-impermeable layer (eg, a light-blocking layer) may overlap the first component area EA1.

[0127] The number of pixels per unit area (hereinafter also referred to as resolution) of the pixels PX included in the display area DA (hereinafter also referred to as normal pixels) and the number of pixels per unit area of ​​the pixels PX included in the first component area EA1 (hereinafter also referred to as first component pixels) may be the same as each other.

[0128] The second component area EA2 includes an area including a transparent layer to enable light to pass therethrough (hereinafter also referred to as a light-transmitting area), and the light-transmitting area may not have a conductive layer or a semiconductor layer, and may have a structure that does not block light by providing an opening in a layer including a light-blocking material (for example, a pixel defining layer and / or a light-blocking layer) that overlaps with a position corresponding to the second component area EA2.

[0129] The number of pixels per unit area of ​​the pixels PX (hereinafter also referred to as second component pixels) included in the second component area EA2 may be smaller than the number of pixels per unit area of ​​normal pixels included in the display area DA.

[0130] As a result, the resolution of the second component pixels may be lower than the resolution of the normal pixels.

[0131] The display panel DP may further include a touch sensor TS in addition to the display area DA including the display pixels PX.

[0132] The display panel DP includes pixels PX which are components for generating an image, and the generated image can be visible to a user from the outside through the transmissive area TA.

[0133] In embodiments, the touch sensor TS may be located on the top of the pixel PX (or a top surface or an upper surface of the pixel PX), and may detect an input applied from the outside.

[0134] The touch sensor TS can detect an external input provided to the cover window WU.

[0135] refer to Figure 2 , the second peripheral area PA2 may include a bending area.

[0136] The display area DA and the first peripheral area PA1 may be in a flat state substantially parallel to a plane defined by the first direction DR1 and the second direction DR2, and one side of the second peripheral area PA2 may extend from the first peripheral area PA1 in a flat state, further extend in the bending area, and then be in a flat state again.

[0137] As a result, at least a portion of the second peripheral area PA2 may be bent and assembled to be located on the rear surface of the display area DA.

[0138] In such an embodiment in which at least a portion of the second peripheral area PA2 is bent, a portion of the second peripheral area PA2 is disposed to overlap the display area DA in a plan view, so that the blocking area BA of the display device 1000 may be reduced.

[0139] However, the present invention is not limited thereto.

[0140] In an embodiment, for example, the second peripheral area PA2 may not be bent.

[0141] The driver 50 may be mounted in the second peripheral area PA2, in the bending region, or at either side of the bending region.

[0142] The driver 50 may be provided in the form of a chip.

[0143] The driver 50 is electrically connected to the display area DA and the component area EA, and can transmit electric signals to the pixels PX in the display area DA and the component area EA.

[0144] In an embodiment, for example, the driver 50 may provide data signals to the pixels PX arranged in the display area DA.

[0145] Alternatively, the driver 50 may include a touch driving circuit and may be electrically connected to the touch sensors TS provided in the display area DA and / or the device area EA.

[0146] In an embodiment, the driver 50 may include various circuits in addition to the circuits described above, or may be designed to provide various electrical signals to the display area DA.

[0147] In an embodiment, the display device 1000 may include a pad portion located at an end of the second peripheral area PA2 and be electrically connected to a flexible printed circuit board including a driving chip through the pad portion.

[0148] Here, the driving chip located on the flexible printed circuit board may include various driving circuits for driving the display device 1000 or a connector for power supply.

[0149] In another embodiment, a rigid printed circuit board (PCB) or a flexible film such as a chip on film may be used instead of the flexible printed circuit board.

[0150] The optical element ES may be disposed under the display panel DP.

[0151] The optical element ES may include a first optical element ES1 overlapping the first component area EA1 and a second optical element ES2 overlapping the second component area EA2.

[0152] In an embodiment, the first optical element ES1 may use IR light, and in such an embodiment, a light-impermeable layer (eg, a light-blocking layer) may overlap the first component area EA1.

[0153] In an embodiment, the first optical element ES1 may be an electronic element using light or sound.

[0154] In such an embodiment, for example, the first optical element ES1 may be a sensor that collects and utilizes light (e.g., an IR sensor), a sensor that outputs and detects light or sound to measure distance or recognize fingerprints, a small lamp that emits light, or a speaker that outputs sound.

[0155] It will be appreciated that in the case of an electronic component using light, light of various wavelength bands such as visible light, IR light, and ultraviolet light can be used.

[0156] The second optical element ES2 is at least one selected from a camera (eg, an IR camera), a dot projector, an IR illuminator, and a time-of-flight (ToF) sensor.

[0157] Embodiments of the light emitting display device may have Figure 3 The cross-sectional structure shown in FIG. Figure 3 To describe its cross-sectional structure.

[0158] Figure 3 is a schematic cross-sectional view of a display device according to an embodiment.

[0159] refer to Figure 3 , an embodiment of the display device 1000 includes a display panel DP mainly divided into a lower panel layer LDP and an upper panel layer UDP, and a cover window WU located in front of the display panel DP.

[0160] The lower panel layer LDP of the display panel DP includes a substrate 110, a light emitting device layer LEDL and a pixel circuit layer PCL. The light emitting diode constituting the pixel PX is located on the substrate 110 and in the light emitting device layer LEDL. The pixel circuit layer PCL is located between the substrate 110 and the light emitting device layer LEDL and includes a pixel circuit part for transmitting current to the light emitting diode located in the light emitting device layer LEDL.

[0161] The lower panel layer LDP further includes an encapsulation layer 400 , and the light emitting device layer LEDL is covered by the encapsulation layer 400 .

[0162] In such an embodiment, the encapsulation layer 400 may protect the light emitting device layer LEDL by preventing moisture and air from flowing into the light emitting device layer LEDL.

[0163] The upper panel layer UDP of the display panel DP may include a touch sensing layer TSL (which corresponds to the touch sensor TS described above) and a light blocking layer and a color filter layer 220 / 230 .

[0164] The touch sensing layer TSL may include a sensing insulating layer (see Figure 7 501, 510, 511) and a plurality of sensing electrodes (see Figure 7 540 and 541).

[0165] The light blocking layer and the color filter layer 220 / 230 include a light blocking layer (see Figure 7 220) and color filters (see Figure 7 230 in ), and may further include a scattering layer (see Figure 7 210).

[0166] Each structure will be described in detail below.

[0167] The substrate 110 is a base substrate or a base member, and may be a flexible substrate that can be bent, folded, rolled, or the like.

[0168] In an embodiment, for example, the substrate 110 may include a polymer resin such as polyimide (PI), but is not limited thereto.

[0169] In another embodiment, the substrate 110 may include a glass material or a metal material.

[0170] The pixel circuit layer PCL may be disposed on the substrate 110 .

[0171] The pixel circuit layer PCL may include a plurality of thin film transistors constituting a pixel circuit portion of the pixel PX, and may additionally include a capacitor.

[0172] The pixel circuit layer PCL may include wirings such as a scan line, a data line, and a power supply voltage line connected to the pixel circuit portion.

[0173] Each thin film transistor may include a semiconductor region, a source electrode, a drain electrode, and a gate electrode.

[0174] In an embodiment, the pixel circuit layer PCL may be located in the display area DA, or the pixel circuit layer PCL may be further located in a portion of the non-display area PA or a portion of the bending area.

[0175] The light emitting device layer LEDL may be disposed on the pixel circuit layer PCL.

[0176] The light emitting device layer LEDL may include a plurality of light emitting diodes emitting light, and a pixel defining layer defining a light emitting area, wherein each of the light emitting diodes includes an anode, a cathode, and a light emitting layer.

[0177] A plurality of light emitting diodes of the light emitting device layer LEDL may be disposed in the display area DA.

[0178] In an embodiment, the light emitting layer may be an organic light emitting layer including or containing an organic material.

[0179] In embodiments, at least one functional layer (eg, a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer) may be provided above and below the light emitting layer.

[0180] When current flows between the anode and the cathode, holes and electrons can move to the light emitting layer through the hole transport layer and the electron transport layer, respectively, and can recombine with each other in the light emitting layer to emit light.

[0181] In an embodiment, the light emitting diode may include a micro light emitting diode, a quantum dot light emitting diode including a quantum dot light emitting layer, or an inorganic light emitting diode including an inorganic semiconductor.

[0182] The encapsulation layer 400 may cover the top surface and side surfaces of the light emitting device layer LEDL, and protect the light emitting device layer LEDL.

[0183] The encapsulation layer 400 may include at least one inorganic layer and at least one organic layer to encapsulate the light emitting device layer LEDL.

[0184] The touch sensing layer TSL may be disposed on the encapsulation layer 400 .

[0185] The touch sensing layer TSL may include a plurality of sensing electrodes for detecting a user's touch in a capacitive manner and a plurality of sensing lines connecting the plurality of sensing electrodes with the touch driver 50 - 1 .

[0186] In an embodiment, the touch sensing layer TSL may detect a user touch using a mutual capacitance method or a self-capacitance method.

[0187] In the embodiment, the touch sensing layer TSL may be formed on a separate substrate disposed on the light emitting device layer LEDL.

[0188] In such an embodiment, the substrate supporting the touch sensing layer TSL may be used as an encapsulation substrate for encapsulating the light emitting device layer LEDL, and in such an embodiment in which the encapsulation substrate is provided, the encapsulation layer 400 may be omitted.

[0189] The plurality of sensing electrodes of the touch sensing layer TSL may not overlap the light emitting region, and may be positioned to be covered by a light blocking layer or the like to be described later.

[0190] The light blocking layer and color filter layer 220 / 230 is disposed on the touch sensing layer TSL and may include a light blocking layer (see Figure 7 220) and color filters (see Figure 7 230 in ).

[0191] In an embodiment, a scattering layer may be provided (see Figure 7 210).

[0192] The light blocking layer covers the sensing electrode and may have a position not overlapping the light emitting region, and the color filter can improve the color of light emitted from the light emitting diode by overlapping color filters of various colors with corresponding light emitting regions.

[0193] The light blocking layer and the color filter layer 220 / 230 may have a structure to reduce reflection of external light so that the external light flowing into the display device 1000 is not reflected again and transmitted to the user's eyes.

[0194] This will refer to Figure 8 etc. are described in more detail.

[0195] In an embodiment, the substrate 110 may have a structure including a bending region folded toward the back. The driver 50 is located at one side of the folded substrate 110 and can be electrically connected to the circuit board FPCB to which the touch driver 50 - 1 is attached.

[0196] Here, the driver 50 may output signals and voltages for driving the display panel DP.

[0197] The driver 50 supplies data voltages to a plurality of data lines, supplies corresponding power voltages to power voltage lines such as driving voltage lines, and supplies control signals such as clock signals for generating scan signals to be applied to scan lines.

[0198] The driver 50 may be formed of or defined by an integrated circuit (IC), and mounted on the display panel DP using a chip on glass (COG) method, a chip on plastic (COP) method, or an ultrasonic bonding method.

[0199] In an embodiment, for example, the driver 50 may be positioned in a direction opposite to the third direction DR3 of the display area DA by bending the substrate 110 , and may be positioned at the rear side of the display area DA.

[0200] In another embodiment, the driver 50 may be mounted on the circuit board FPCB.

[0201] The circuit board FPCB may be attached to the pad portion of the display panel DP using an anisotropic conductive film (ACF).

[0202] The pad portion of the circuit board FPCB may be electrically connected to the pad portion of the display panel DP.

[0203] The circuit board FPCB may be a flexible printed circuit board, a rigid printed circuit board, or a flexible film such as a chip on film.

[0204] The touch driver 50 - 1 may be mounted on a circuit board FPCB.

[0205] The touch driver 50 - 1 is electrically connected to the sensing electrodes of the touch sensing layer TSL in the display panel DP, can supply driving signals to the plurality of sensing electrodes, and can detect a change amount of electrostatic capacitance between the plurality of sensing electrodes to determine whether a touch is performed.

[0206] The touch driver 50 - 1 may be formed of or defined by an IC.

[0207] The cover window WU is located in front of the display panel DP, and the cover window WU may include a window WIN and an anti-reflection layer ARL.

[0208] The window WIN may be disposed on the light blocking layer and the color filter layer 220 / 230 , and may be attached to the light blocking layer and the color filter layer 220 / 230 using a transparent adhesive.

[0209] The window WIN may be used to protect the display panel DP.

[0210] The window WIN may include or be made of a transparent material.

[0211] In an embodiment, the window WIN may comprise, for example, glass or plastic.

[0212] In embodiments where the window WIN comprises glass, the glass may be ultra-thin glass (UTG) or thin-film glass.

[0213] Ultra-thin glass may be glass that is strengthened to have a predetermined internal stress distribution.

[0214] The tempered ultra-thin glass can effectively prevent crack generation, crack propagation and crack breakage caused by external impact better than before tempering.

[0215] The ultra-thin glass strengthened by the tempering process may have a stress that varies depending on the region.

[0216] In embodiments where the glass is made of ultra-thin films or thin films, the glass has flexible properties and can be warped, bent, folded, or curled.

[0217] The thickness of the glass may be, for example, in a range of about 10 micrometers (μm) to about 300 μm, such as in a range of about 10 μm to about 100 μm or about 50 μm.

[0218] The glass of the window WIN may comprise soda-lime glass, alkali-aluminosilicate glass, borosilicate glass or lithium-aluminosilicate glass.

[0219] The glass of the window WIN may include glass that is chemically strengthened or heat strengthened to have additional strength.

[0220] Chemical strengthening can be achieved by performing an ion exchange treatment process in an alkaline salt.

[0221] The ion exchange treatment process may be performed two or more times.

[0222] Furthermore, the window WIN may be a polymer film coated with glass films on two opposite sides.

[0223] The anti-reflection layer ARL may be located in front of the window WIN, and the anti-reflection layer ARL may be attached to the front surface of the window WIN in the form of an optical film.

[0224] An anti-reflection layer ARL may be disposed on the window WIN.

[0225] The anti-reflection layer ARL can protect the window WIN and reduce the reflection of external light.

[0226] The anti-reflection layer ARL may include a hard coating layer and a low refractive index layer, and may prevent or reduce reflection of external light by forming two layers having different refractive indices from each other so that external light is lost or destructive interference occurs at an interface or there is cancelling interference.

[0227] Here, the low refractive index layer may have a structure including particles dispersed in a transparent resin.

[0228] In an embodiment, a high refractive index layer may be additionally included in the anti-reflection layer ARL, and the high refractive index layer may be located between the hard coating layer and the low refractive index layer.

[0229] The hard coating layer, the low refractive index layer, and / or the high refractive index layer that may be included in the anti-reflection layer ARL may have the following characteristics.

[0230] The hard coating can reduce deformation or peeling of the anti-reflective layer (ARL) under harsh conditions such as high temperature and high humidity, thereby alleviating reliability issues.

[0231] The hard coating layer may include an organic layer.

[0232] The organic layer is at least one selected from acrylate compounds, urethane compounds, polyimide, polycarbonate, polyethersulfone, polyethylene naphthalate, polyphenylene sulfide, liquid crystal polymer (LCP), polymethyl methacrylate and epoxy polymer, or the organic layer may include a combination thereof.

[0233] In another embodiment, the hard coating layer may include an organic layer and an organic-inorganic composite layer.

[0234] In such an embodiment, the organic layer may include an acrylate compound.

[0235] In an embodiment, for example, the organic layer may be formed to include urethane acrylate.

[0236] The organic layer may serve as a stress buffer layer.

[0237] The organic material in the organic-inorganic composite layer may be formed of at least one selected from acrylate compounds, polyurethane compounds, epoxy compounds and combinations thereof.

[0238] In an embodiment, for example, the organic material may include urethane acrylate.

[0239] In an embodiment, the inorganic material in the organic-inorganic composite layer may include silicon dioxide (SiO 2 ), zirconium oxide (ZrO 2 ), aluminum oxide (Al 2 O 3 ), Tantalum Oxide (Ta 2 O 5 ), niobium oxide (Nb 2 O 5 or NbO 2 ) and at least one of glass microspheres.

[0240] The inorganic material may be provided in the form of a single type of inorganic oxide listed above or a mixture thereof.

[0241] Furthermore, the inorganic material may be provided in various forms to form the organic-inorganic composite layer.

[0242] For example, silicon oxide may be provided in the form of particles, sol, or having a hollow shape.

[0243] In the organic-inorganic composite layer, the organic acrylate-based compound and the inorganic particles may be mixed in a weight ratio of 5:5 to 8:2.

[0244] By including both the acrylic compound and the inorganic particles, the organic-inorganic composite layer forms a hard coating layer that is not easily broken, improves the surface hardness, and has impact absorption properties against external impacts.

[0245] In an embodiment, the hard coating layer may include an acrylate-based compound and a urethane-based compound.

[0246] The acrylate compound and the urethane compound may be mixed and polymerized in the form of monomers.

[0247] Acrylate compounds can improve the hardness and abrasion resistance of the anti-reflection layer (ARL) by increasing the hardness of the low refractive index layer.

[0248] Urethane compounds can improve the elasticity of the anti-reflection layer (ARL) by providing flexibility to the low refractive index layer.

[0249] In an embodiment, in the hard coating layer, the ratio of the acrylate-based compound may be 70% to 99.9%, and the ratio of the urethane-based compound may be 0.1% to 30%.

[0250] In an embodiment, for example, the mixing ratio of the acrylate-based compound and the urethane-based compound may be 7:3 or more, and the ratio of the acrylate-based compound may be further increased.

[0251] In an embodiment, for example, the mixing ratio of the acrylate compound and the urethane compound may be further increased, such as 7:3, 8:2, or 9:1.

[0252] In another embodiment, the hard coating layer may include an acrylate compound.

[0253] In such an embodiment, the acrylate compound may be an acrylic resin.

[0254] That is, the hard coating layer can improve the hardness and abrasion resistance of the anti-reflection layer ARL by including the acrylic resin.

[0255] The thickness of the hard coating layer may be in the range of about 2 μm to about 10 μm.

[0256] By including the hard coating layer within the above thickness range, deformation or peeling phenomenon can be reduced, and reliability issues can be improved.

[0257] The refractive index of the hard coating layer may be in the range of 1.48 to 1.53.

[0258] By including the hard coating layer within the above refractive index range, there is a difference in refractive index at the interface of the hard coating layer and a low refractive index layer described later, and light emitted from the light emitting device layer LEDL is refracted upward to improve light output efficiency and reduce reflection of external light.

[0259] The low refractive index layer may be provided on the hard coating layer.

[0260] The low refractive index layer can refract light emitted from the light emitting device layer LEDL upward to improve light output efficiency and reduce reflection of external light.

[0261] The low refractive index layer may include particles dispersed in a transparent resin.

[0262] The transparent resin may include at least one selected from the group consisting of acrylic, polysiloxane, polyurethane, polyurethane acrylate, polyimide, polymethylsilsesquioxane (PMSSQ), and polymethylmethacrylate (PMMA).

[0263] The particles may be hollow particles.

[0264] In an embodiment, for example, the particles may include a material selected from silicon dioxide (SiO 2 ), magnesium fluoride (MgF 2 ) and iron oxide (Fe 3 O 4 ) at least one of.

[0265] Furthermore, the particle may include a shell made of one or more of the above materials and a hollow interior of the shell.

[0266] In embodiments, the diameter of the particle may be in a range of about 10 nanometers (nm) to about 200 nm, and the thickness of the shell and the diameter of the hollow interior may be determined depending on the diameter of the particle.

[0267] The particles contained in the low refractive index layer may be included in an amount of 10 to 50% by weight with respect to the resin.

[0268] If the weight ratio of the particles to the resin is 10% or more, the refractive index of the low refractive index layer can be lowered, and if the weight ratio of the particles to the resin is 50% or less, the adhesiveness with the adjacent layer can be prevented from being reduced.

[0269] The low refractive index layer can be formed by applying a solution including a solvent in which a resin and particles are dispersed and curing it.

[0270] The thickness of the low refractive index layer may be in the range of about 10 nm to about 200 nm.

[0271] By including the low refractive index layer within the above thickness range, particles sufficient to lower the refractive index and improve adhesion with the underlying layer can be included.

[0272] The refractive index of the low refractive index layer may be lower than that of the hard coating layer.

[0273] In the case of the above example of the weight ratio of particles to resin, the refractive index of the low refractive index layer may be smaller than the refractive index of the hard coating layer by about 0.05 or more.

[0274] If the difference between the refractive indices of the low refractive index layer and the hard coating layer is 0.05 or more, total reflection of external light at the interface between the low refractive index layer and the hard coating layer can increase to cause destructive interference with light reflected from the surface of the low refractive index layer.

[0275] Accordingly, the reflectivity of the anti-reflection layer ARL to external light can be reduced.

[0276] The refractive index of the low refractive index layer may be in the range of about 1.3 to about 1.43.

[0277] However, it is not limited thereto, and the low refractive index layer can be used as long as the refractive index of the low refractive index layer is smaller than the refractive index of the hard coating layer.

[0278] In an embodiment, the high refractive index layer may include an inorganic material, an organic material, or an inorganic material and an organic material.

[0279] Therefore, the high refractive index layer may include or be made of an inorganic layer, an organic layer, or an organic layer containing inorganic particles.

[0280] The inorganic material contained in the high refractive index layer may be at least one selected from zinc oxide, titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, tin oxide, nickel oxide, silicon oxide, silicon nitride, indium nitride, and gallium nitride.

[0281] The organic material contained in the high refractive index layer includes at least one selected from the group consisting of poly(3,4-ethylenedioxythiophene) (PEDOT), 4,4'-bis[N-(3-methylphenyl)-N-phenylamino]biphenyl (TPD), 4,4',4"-tris[(3-methylphenyl)phenylamino]-triphenylamine (m-MTDATA), 1,3,5-tris[N,N-bis(2-methylphenyl)-amino]-benzene (o-MTDAB), 1,3,5-tris[N,N-bis(3-methylphenyl)-amino]-benzene (m-MTDAB), and 1,3,5 -tris[N,N-bis(4-methylphenyl)-amino]-benzene (p-MTDAB), 4,4'-bis[N,N-bis(3-methylphenyl)-amino]-diphenylmethane (BPPM), 4,4'-dicarbazolyl-1,1'-biphenyl (CBP), 4,4',4"-tris(N-carbazole)triphenylamine (TCTA), 2,2',2"-(1,3,5-benzoyl)tris-[1-phenyl-1H-benzimidazole] (TPBI), and 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ).

[0282] The refractive index of the high refractive index layer may be greater than that of the low refractive index layer to reduce reflection of external light.

[0283] In an embodiment, for example, the refractive index of the high refractive index layer may be greater than the refractive index of the low refractive index layer by 0.05 or more.

[0284] The refractive index of the high refractive index layer may be in the range of about 1.53 to about 1.7.

[0285] However, it is not limited thereto, and the high refractive index layer may be used as long as the refractive index of the high refractive index layer is greater than the refractive index of the low refractive index layer.

[0286] The thickness of the high refractive index layer may be in the range of about 50 nm to about 200 nm.

[0287] By including the high refractive index layer within the above thickness range, the interface with the low refractive index layer can be formed to be flat, and a decrease in bonding strength with the hard coating layer can be prevented.

[0288] The anti-reflection layer ARL further including the high refractive index layer can further reduce the reflection of external light by increasing the refractive index difference at the interface with the low refractive index layer.

[0289] In an embodiment, an optical film other than the anti-reflection layer ARL may be further included on the front surface of the window WIN, and an anti-fingerprint layer may be included.

[0290] In this embodiment, a polarizer is not included, and this is because a light blocking layer and a color filter layer 220 / 230 to be described later reduce the reflectivity of external light and make it difficult for a user to see the external light.

[0291] Accordingly, in such an embodiment, the anti-reflection layer ARL may not be included on the front surface of the window WIN.

[0292] In the following we will refer to Figure 4 A display device according to an embodiment will be described.

[0293] Figure 4 is a block diagram of a display device according to an embodiment.

[0294] refer to Figure 4 , an embodiment of the display device 1000 may include a display panel DP, a power module PM, a first electronic module EM1 and a second electronic module EM2.

[0295] The display panel DP, the power module PM, the first electronic module EM1 and the second electronic module EM2 may be electrically connected to each other.

[0296] exist Figure 4 , the touch sensor TS and the display pixels located in the display area DA of the display panel DP are shown as examples.

[0297] The power module PM can supply power required for the overall operation of the display device 1000 .

[0298] The power module PM may include a conventional battery module.

[0299] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for operating the display device 1000 .

[0300] The first electronic module EM1 may be directly mounted on the main board electrically connected to the display panel DP, or may be mounted on a separate board and electrically connected to the main board through a connector (not shown).

[0301] The first electronic module EM1 may include a control module (or controller) CM, a wireless communication module TM, an image (or video) input module IIM, an audio (or sound) input module AIM, a memory MM, and an external interface IF.

[0302] Some of these modules may not be mounted on the main board, but may be electrically connected to the main board through a flexible printed circuit board connected to the main board.

[0303] The control module CM may control the overall operation of the display apparatus 1000 .

[0304] The control module CM may be a microprocessor.

[0305] In an embodiment, for example, the control module CM activates or deactivates the display panel DP.

[0306] The control module CM can control other modules such as the image input module IIM or the audio input module AIM based on the touch signal received from the display panel DP.

[0307] The wireless communication module TM can transmit wireless signals to other terminals and receive wireless signals from other terminals using Bluetooth or Wi-Fi.

[0308] The wireless communication module TM can transmit / receive voice signals using a general communication line.

[0309] The wireless communication module TM includes a transmitter TM1 that modulates a signal to be transmitted and transmits it, and a receiver TM2 that demodulates a received signal.

[0310] The image input module IIM can process video signals and convert them into video data that can be displayed on the display panel DP.

[0311] The audio input module AIM can receive external audio signals through a microphone in a recording mode, a voice recognition mode, etc. and convert them into electronic voice data.

[0312] The external interface IF may be used as an interface for connecting to an external charger, a wired / wireless data port, a card (eg, a memory card, a SIM / UIM card) slot, and the like.

[0313] The second electronic module EM2 may include an audio (or sound) output module AOM, a light emitting module LM, a light receiving module LRM and a camera module CMM, at least some of which include an optical element ES and may be located at the back of the display panel DP, such as Figure 2 as shown in .

[0314] The optical element ES may include a light emitting module LM, a light receiving module LRM, and a camera module CMM.

[0315] In an embodiment, the second electronic module EM2 may be directly mounted on the main board, or may be mounted on a separate board and electrically connected to the display panel DP through a connector (not shown), or may be connected to the first electronic module EM1.

[0316] The audio output module AOM can convert audio data received from the wireless communication module TM or audio data stored in the memory MM and output it to the outside.

[0317] The light emitting module LM can generate and output light.

[0318] The light emitting module LM can output IR light.

[0319] For example, the light emitting module LM may include an LED device.

[0320] For example, the light receiving module LRM can detect IR light.

[0321] When IR light above a certain level is detected, the light receiving module LRM may be activated.

[0322] The light receiving module LRM may include a CMOS sensor.

[0323] After the IR light generated in the light emitting module LM is output, the IR light is reflected by an external object (eg, a finger or face of a user), and the reflected IR light may be incident on the light receiving module LRM.

[0324] The camera module CMM can capture external images.

[0325] In an embodiment, the optical element ES may additionally include a light detection sensor or a heat detection sensor.

[0326] The optical element ES can detect an external subject received through the front face, or provide a sound signal such as voice to the outside through the front face.

[0327] Furthermore, the optical element ES may include multiple components and is not limited to any one embodiment.

[0328] Reference again Figure 2 , the housing HM can be combined with the cover window WU.

[0329] A cover window WU may be provided at the front of the housing HM.

[0330] The housing HM may be combined with the cover window WU to provide a predetermined accommodation space.

[0331] The display panel DP and the optical element ES may be accommodated in a predetermined accommodation space provided between the housing HM and the cover window WU.

[0332] The housing HM may include a material having relatively high rigidity.

[0333] In an embodiment, for example, the housing HM may include a plurality of frames and / or plates including or made of glass, plastic, or metal, or a combination thereof.

[0334] The housing HM can stably protect components of the display device 1000 accommodated in the inner space from external impacts.

[0335] In the following we will refer to Figure 5 The structure of a display device 1000 according to another embodiment will be described.

[0336] Figure 5 is a perspective view schematically showing a light emitting display device according to another embodiment.

[0337] Any repeated detailed description of the same components as those described above will be omitted, and Figure 5 The embodiment shows a foldable display device in which the display device 1000 is foldable about a folding axis FAX.

[0338] refer to Figure 5 In an embodiment, the display device 1000 may be a foldable display device.

[0339] The display apparatus 1000 may be folded outward or inward based on a folding axis FAX.

[0340] In an embodiment in which the display device 1000 is foldable outward based on the folding axis FAX, the display surface of the display device 1000 is positioned outside in the third direction DR3 in the folded state, so that images can be displayed in two opposite directions.

[0341] In an embodiment in which the display device 1000 is foldable inwardly based on the folding axis FAX, the display surface may not be visible from the outside in the folded state.

[0342] In an embodiment, the display device 1000 may include a display area DA, an element area EA, and a non-display area PA.

[0343] The display area DA may be divided into a first display area DA1 - 1 , a second display area DA1 - 2 , and a folding area FA.

[0344] The first display area DA1-1 and the second display area DA1-2 may be located on the left and right sides based on (or centered around) the folding axis FAX, respectively, and the folding area FA may be located between the first display area DA1-1 and the second display area DA1-2.

[0345] In an embodiment, when the display device 1000 is folded outward based on the folding axis FAX, the first display area DA1-1 and the second display area DA1-2 are positioned at two opposite sides in the third direction DR3, and can display images in two directions.

[0346] In an embodiment, when the display apparatus 1000 is folded inwardly based on the folding axis FAX, the first display area DA1 - 1 and the second display area DA1 - 2 may not be visible from the outside.

[0347] Figure 6 is an enlarged plan view of a partial area of ​​a light emitting display device according to an embodiment.

[0348] Figure 6 A portion of an embodiment of a light emitting display panel DP of a light emitting display device according to an embodiment is shown, and the light emitting display panel DP may be a display panel for a mobile phone.

[0349] The display area DA is located in front of the light-emitting display panel DP, and the component area EA is also located within the display area DA.

[0350] Specifically, the component area EA may include a first component area EA1 and a second component area EA2 .

[0351] In an embodiment, Figure 6 As shown in FIG. 1 , the first component area EA1 may be located adjacent to the second component area EA2 .

[0352] In an embodiment, Figure 6 As shown in FIG. 1 , the first component area EA1 may be located on the left side of the second component area EA2 .

[0353] The location and number of first component areas EA1 may vary in other embodiments.

[0354] exist Figure 6 In the embodiment shown in FIG. , the second optical element corresponding to the second component area EA2 (see Figure 2 ES2 in the figure may be a camera, and the first optical element corresponding to the first component area EA1 (see Figure 2 ES1) in can be an optical sensor.

[0355] The display area DA includes a plurality of light emitting diodes and a plurality of pixel circuit parts that generate a light emitting current and transmit it to each of the plurality of light emitting diodes.

[0356] Here, a light emitting diode and a pixel circuit portion may together define a pixel (see Figure 2 in PX).

[0357] In the display area DA, one pixel circuit portion and one light emitting diode are formed in a one-to-one correspondence.

[0358] The display area DA is also referred to as a “normal display area” hereinafter.

[0359] Despite Figure 6 The structure of the light-emitting display panel DP below the cutting line is not shown in the figure, but the display area DA may also be further located below the cutting line.

[0360] The light emitting display panel DP according to the embodiment may be mainly divided into a lower panel layer and an upper panel layer.

[0361] The lower panel layer is the part where the light-emitting diode and the pixel circuit part of the pixel are located, and may further include a packaging layer covering the light-emitting diode (see Figure 7 of 400).

[0362] That is, the lower panel layer is from the substrate (see Figure 7 110) to the encapsulation layer may include an anode (see Figure 7 anode in the anode), pixel defining layer (see Figure 7 380 in), the luminescent layer (see Figure 7 EML in) and spacers (see Figure 7 385 in ), and may further include a functional layer (see Figure 7 FL in), cathode (see Figure 7 The cathode in the substrate) and the insulating layer, the semiconductor layer and the conductive layer between the substrate and the anode.

[0363] In an embodiment, the upper panel layer is a portion located above the encapsulation layer, including a sensing insulating layer capable of detecting a touch (see Figure 7 501, 510, 511) and a plurality of sensing electrodes (see Figure 7 540 and 541 in the figure), and may further include a light blocking layer (see Figure 7 220), scattering layer (see Figure 7 210), color filter (see Figure 7 230) and a planarization layer (see Figure 7 of 550).

[0364] The first component area EA1 may include only a transparent layer allowing light to pass therethrough and may not include a conductive layer or a semiconductor layer to allow light to pass therethrough, and may have an optical sensor area having a structure that does not block light by forming openings (hereinafter referred to as additional openings) in a pixel defining layer in a lower panel layer and a light blocking layer and a color filter layer in an upper panel layer at a position corresponding to the first component area EA1.

[0365] In an embodiment, even if the optical sensor area is located in the lower panel layer, if there is no corresponding opening defined in the upper panel layer, the optical sensor area may be considered as the display area DA instead of the first component area EA1.

[0366] One first component area EA1 may include a plurality of adjacent optical sensor areas, and in this case, the first component area EA1 may include pixels adjacent to the optical sensor areas.

[0367] In an embodiment, when the first optical element ES1 corresponding to the first component area EA1 uses IR light instead of visible light, the first component area EA1 overlaps the light blocking layer 220 that blocks the visible light.

[0368] The second component area EA2 may include second component pixels and a light-transmitting region, and a space between adjacent second component pixels may be a light-transmitting region.

[0369] although Figure 6 Although not shown in the figure, the peripheral area may be further located outside the display area DA.

[0370] In addition, despite Figure 6 A display panel for a mobile phone is shown, but the embodiments described above may be applied to any display panel in which an optical element may be located on the back side of the display panel, and it may also be a flexible display device.

[0371] In the case of a foldable display device among the flexible display devices, the first component area EA1 and the second component area EA2 may be formed at the same Figure 6 The location is different from the location.

[0372] In the following we will refer to Figure 7 The structure of the light emitting display panel DP according to the embodiment is described.

[0373] Figure 7 is a schematic cross-sectional view of a display panel according to an embodiment.

[0374] The light-emitting display panel DP according to the embodiment can display images through the light-emitting diodes arranged on the substrate 110, can detect touch by including a plurality of sensing electrodes 540 and 541, and also has color characteristics of the color filters 230R, 230G, 230B in the light emitted by the light-emitting diodes by including a light-blocking layer 220 and color filters 230R, 230G, 230B.

[0375] In an embodiment, Figure 7 As shown in FIG. , the light emitting display panel DP may further include a scattering layer 210 under the light blocking layer 220 , and the scattering layer 210 can reflect or refract light by including scattering particles 211 therein.

[0376] The scattering layer 210 may be a colorless light-transmitting layer having no color in the visible light band.

[0377] In an embodiment, for example, the scattering layer 210 may include a colorless light-transmitting organic material such as acrylic resin. In an embodiment, the scattering layer 210 may include a photosensitive transparent organic material.

[0378] The scattering particles 211 may be formed of a material having a refractive index different from that of the scattering layer 210, and may include a material selected from titanium dioxide (TiO 2 ), silicon dioxide (SiO 2 )、Zirconium oxide (Zr 2 O 3 ), aluminum oxide (Al 2 O 3 ), at least one of hollow silica, acrylic materials and silicon materials.

[0379] Here, the hollow silica may have a silicon dioxide (SiO 2 ) The interior of the particles has a hollow space structure.

[0380] In addition, a polarizer is not formed in front of the light-emitting display panel DP according to the embodiment, but instead, a pixel defining layer 380 is formed with a black organic material and a light blocking layer 220 and a color filter 230 are formed on the top, so that even if external light enters the inside, the external light can be prevented from being reflected from the anode, etc. and transmitted to the user, and the scattering layer 210 is also located on the top, so when external light enters or is reflected, the external light can be scattered, thereby reducing the intensity of the external light.

[0381] Detailed features of the light emitting display panel DP according to the embodiment are as follows.

[0382] The substrate 110 may include a material having a rigid property and not being bent, such as glass, or may include a flexible material that is bendable, such as plastic or polyimide.

[0383] A plurality of thin film transistors are disposed on the substrate 110, but for the sake of convenience in illustration, Figure 7 The thin film transistor is omitted, and only the organic layer 180 covering the thin film transistor is shown.

[0384] One pixel is defined by a light emitting diode and a pixel circuit portion in which a capacitor and a plurality of transistors for transmitting a light emitting current to the light emitting diode are formed.

[0385] exist Figure 7 The pixel circuit portion is not shown in the figure, and the structure of the pixel circuit portion may be changed in the embodiment.

[0386] exist Figure 7 The organic layer 180 in the pixel circuit portion is shown in FIG.

[0387] A light emitting diode including an anode, a light emitting layer EML, and a cathode is positioned on the organic layer 180 .

[0388] The anode may be composed of, or defined by, a single layer including a transparent conductive oxide film and a metal material or a multilayer including these.

[0389] The transparent conductive oxide film may include at least one selected from indium tin oxide (ITO), polycrystalline ITO, indium zinc oxide (IZO), indium gallium zinc oxide (IGZO) and indium tin zinc oxide (ITZO), and the metal material may include at least one selected from silver (Ag), molybdenum (Mo), copper (Cu), gold (Au) and aluminum (Al).

[0390] The light emitting layer EML may be formed of an organic light emitting material, and adjacent light emitting layers EML may display different colors from each other.

[0391] In another embodiment, each light emitting layer EML may emit light of the same color, and light of different colors may be generated by the color filters 230R, 230G, 230B located on the top.

[0392] In an embodiment, the light emitting layer EML may have a structure (also referred to as a tandem structure) in which a plurality of light emitting layers are stacked.

[0393] The pixel defining layer 380 is positioned on the organic layer 180 and the anode and an opening OP is defined or formed in the pixel defining layer 380 , the opening overlaps a portion of the anode, and the emission layer EML is positioned over the anode exposed by the opening OP.

[0394] The light emitting layer EML may be located only within the opening OP of the pixel defining layer 380 and separated from the adjacent light emitting layer EML by the pixel defining layer 380 .

[0395] The pixel defining layer 380 may include or be formed of a negative-type black organic material.

[0396] The black organic material may include a light-blocking material, and the light-blocking material may include carbon black, carbon nanotubes, a resin or paste containing a black dye, metal particles such as nickel, aluminum, molybdenum and alloys thereof, metal oxide particles or metal nitride particles (e.g., chromium nitride), and the like.

[0397] The pixel defining layer 380 includes a light blocking material and is black in color, and may have a property of absorbing / blocking light rather than reflecting light.

[0398] Because a negative-type organic material is used, it can have the property of removing the area covered by the mask.

[0399] The spacer 385 is formed on the pixel defining layer 380 .

[0400] The spacer 385 includes a first portion 385 - 1 that protrudes and is located in a narrow area and a second portion 385 - 2 that is low in height and is located in a wide area.

[0401] exist Figure 7 , the first portion 385 - 1 and the second portion 385 - 2 are distinguished and shown by dotted lines within the spacer 385 .

[0402] Here, the first portion 385 - 1 may serve to ensure rigidity against pressing force by enhancing scratching strength.

[0403] The second portion 385 - 2 may serve as a contact assistant between the pixel defining layer 380 and the upper functional layer FL.

[0404] The first portion 385 - 1 and the second portion 385 - 2 include or are made of the same material as each other, and may be made of a positive photosensitive organic material (eg, photosensitive polyimide (PSPI)).

[0405] Since the positive photosensitive organic material has positive characteristics, the portion not covered by the mask can be removed.

[0406] The spacer 385 is transparent, allowing light to be transmitted and / or reflected.

[0407] The pixel defining layer 380 may be formed as a negative type, and the spacer 385 may be formed as a positive type. In an embodiment, the pixel defining layer 380 and the spacer 385 may include the same material as each other.

[0408] At least a portion of the upper surface of the pixel defining layer 380 is covered by the spacer 385 , and an edge of the second portion 385 - 2 has a structure spaced apart from an edge of the pixel defining layer 380 , and a portion of the pixel defining layer 380 has a structure not covered by the spacer 385 .

[0409] The second portion 385 - 2 covers even a portion of the upper surface of the pixel defining layer 380 where the first portion 385 - 1 is not located, thereby enhancing the adhesion property between the pixel defining layer 380 and the functional layer FL.

[0410] In an embodiment, the spacer 385 is located only in a region overlapping with a light blocking layer 220 described later, so that the spacer 385 may not be visible when viewed from the front of the display panel DP because the spacer 385 is blocked by the light blocking layer 220 .

[0411] The functional layer FL is located on the spacer 385 and the exposed pixel defining layer 380, and the functional layer FL can be formed on the entire surface of the light-emitting display panel DP, or in some areas (e.g., the second component area EA2), the functional layer FL can be formed in all areas except the light-transmitting area of ​​the second component area EA2.

[0412] The functional layer FL may include an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer, and the functional layer FL may be located above and below the emission layer EML.

[0413] In other words, the hole injection layer, the hole transport layer, the light-emitting layer EML, the electron transport layer, the electron injection layer and the cathode may be sequentially located on the anode. In this embodiment, the hole injection layer and the hole transport layer in the functional layer FL may be located below the light-emitting layer EML, and the electron transport layer and the electron injection layer may be located above the light-emitting layer EML.

[0414] The spacer 385 can increase the scratch resistance of the light-emitting display panel DP and reduce the defect rate due to pressing force, and according to an embodiment, the spacer 385 can increase the adhesion with the functional layer FL located on the upper portion of the spacer 385 to prevent moisture and air from being injected from the outside.

[0415] Furthermore, when the light-emitting display panel DP has a flexible property and is folded and unfolded, in order to eliminate the problem of poor adhesion between layers, high adhesion strength may be desired.

[0416] The cathode may be formed as a light-transmitting electrode or a reflective electrode.

[0417] In an embodiment, the cathode may be a transparent electrode or a semi-transparent electrode, including a metal film having a small work function such as at least one selected from lithium (Li), calcium (Ca), aluminum (Al), silver (Ag), magnesium (Mg) and compounds thereof (e.g., LiF) or a double-layer structure such as lithium fluoride / calcium (LiF / Ca) or lithium fluoride / aluminum (LiF / Al).

[0418] In an embodiment, a material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium oxide (In 2 O 3 ) transparent conductive oxide (TCO) film.

[0419] The cathode electrode may be integrally or commonly formed over the entire surface of the light-emitting display panel DP.

[0420] The encapsulation layer 400 is located on the cathode.

[0421] The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and in an embodiment, as shown in FIG. Figure 7 As shown in FIG. 4 , the encapsulation layer 400 has a three-layer structure including a first inorganic encapsulation layer 401 , an organic encapsulation layer 402 , and a second inorganic encapsulation layer 403 .

[0422] The encapsulation layer 400 may protect the light emitting layer EML including or made of an organic material from moisture or oxygen that may enter from the outside.

[0423] In an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[0424] Sensing insulation layers 501 , 510 , 511 and a plurality of sensing electrodes 540 , 541 are positioned on the encapsulation layer 400 for touch detection.

[0425] In an embodiment, Figure 7 As shown in FIG. 5 , the touch is sensed in a mutual capacitance manner using two sensing electrodes 540 and 541 , but in another embodiment, the touch can also be detected in a self-capacitance manner using only one sensing electrode.

[0426] The plurality of sensing electrodes 540 and 541 may be insulated with the second sensing insulating layer 510 interposed therebetween, and the lower sensing electrode 541 is located on the first sensing insulating layer 501 with the second sensing insulating layer 510 interposed therebetween, and the upper sensing electrode 540 is located on the second sensing insulating layer 510 with the upper sensing electrode 540 covered by the third sensing insulating layer 511.

[0427] The plurality of sensing electrodes 540 or 541 may be electrically connected through openings defined or formed in the second sensing insulating layer 510 .

[0428] Here, the sensing electrodes 540, 541 may include a metal or a metal alloy including aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), tantalum (Ta), etc., and may be defined by a single layer or multiple layers.

[0429] The scattering layer 210 , the light blocking layer 220 , and the color filters 230R, 230G, 230B are positioned on the third sensing insulating layer 511 .

[0430] In an embodiment, the light blocking layer 220 may be positioned to overlap the sensing electrodes 540 and 541 in a plan view, and may be positioned not to overlap the anode electrode in a plan view.

[0431] Accordingly, in such an embodiment, the anode electrode and the light emitting layer EML capable of displaying an image may not be shielded by the light blocking layer 220 and the sensing electrodes 540 and 541 .

[0432] The scattering layer 210 may be positioned to overlap the light blocking layer 220 and the sensing electrodes 540 , 541 in plan view, a portion of the scattering layer 210 may overlap the anode in plan view, and the remaining portion may not overlap the anode.

[0433] The scattering layer 210 may overlap the pixel defining layer 380 in a plan view.

[0434] The scattering layer 210 includes scattering particles 211 capable of scattering light, and has an opening OPSL (also referred to as a scattering layer opening) at least partially overlapping the opening OP of the pixel defining layer 380 in a plan view.

[0435] The size, shape, and arrangement direction of the opening OPSL of the scattering layer 210 may vary and will be described in more detail later.

[0436] refer to Figure 7 In an embodiment, the light blocking layer 220 is located only in a region overlapping with the pixel defining layer 380 in a plan view, and one side of the light blocking layer 220 is retracted inward from a corresponding side of the pixel defining layer 380 .

[0437] The light blocking layer 220 may define an opening OPBM (hereinafter also referred to as a second opening), and an area of ​​the second opening OPBM of the light blocking layer 220 in a plan view may be greater than an area of ​​an opening OP (also referred to as a first opening) of the pixel defining layer 380, and the opening OP of the pixel defining layer 380 may be located within the second opening OPBM of the light blocking layer 220 in a plan view.

[0438] In a plan view, the second openings OPBM of the light blocking layer 220 may be larger than the openings OPSL of the scattering layer 210 , and at least a portion of the second openings OPBM of the light blocking layer 220 may overlap with the openings OPSL of the scattering layer 210 .

[0439] In addition, one side of the spacer 385 is disposed to be retracted inwardly from the corresponding side of the pixel defining layer 380 by a predetermined distance g1, and one side of the spacer 385 is also disposed to be retracted inwardly from the corresponding side of the light blocking layer 220 .

[0440] As a result, the spacer 385 may not be visible because the spacer 385 is shielded by the light blocking layer 220 when viewed from the front side of the display panel DP.

[0441] When external light is incident, the external light passes through the second opening OPBM of the light blocking layer 220 and the opening OPSL of the scattering layer 210 , and is then reflected from the sidewall of the opening OP of the pixel defining layer 380 .

[0442] The sidewall of the opening OP of the pixel defining layer 380 is curved, and color separation may occur depending on the position of reflection, so that reflected light may appear in various colors such as rainbow.

[0443] This color-separated reflected light may be easily noticed by the user's eyes and may reduce the display quality. In an embodiment, the light can be scattered by the scattering particles 211 located in the scattering layer 210, making it difficult for the user to recognize the reflected light.

[0444] In addition, as will be described later, the shape, size, and angle of the opening OPSL of the scattering layer 210 may be changed in various ways, and various openings OPSL of the scattering layer 210 are included in one display panel, so reflected external light may be prevented from forming a specific diffraction pattern.

[0445] As a result, it is possible to make it difficult for a user to recognize reflection of external light, thereby reducing degradation of display quality due to the reflected light.

[0446] This will be described in more detail later.

[0447] In an embodiment, Figure 7 As shown in FIG. 3 , the opening OPSL of the scattering layer 210 is larger than the opening OP of the pixel defining layer 380 , and the second opening OPBM of the light blocking layer 220 is depicted to be larger than the opening OPSL of the scattering layer 210 .

[0448] However, the width relationship of these openings may vary depending on the shape, size, location and cross-section of the individual openings.

[0449] The color filters 230R, 230G, 230B are positioned on the sensing insulation layers 501 , 510 , 511 , the scattering layer 210 , and the light blocking layer 220 .

[0450] The color filters 230R, 230G, and 230B are a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light.

[0451] Each of the color filters 230R, 230G, 230B may be positioned to overlap an anode electrode of a light emitting diode in a plan view.

[0452] Since light emitted from the light emitting layer EML may be changed into corresponding colors as the light passes through the color filter, all lights emitted from the light emitting layer EML may have the same color as each other.

[0453] In another embodiment, in the case where the light emitting layer EML emits light of different colors, the displayed colors can be enhanced by passing through a color filter of the same color.

[0454] The light blocking layer 220 may be positioned between the respective color filters 230R, 230G, 230B.

[0455] In an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0456] The color conversion layer may include quantum dots.

[0457] A planarization layer 550 covering the color filters 230R, 230G, 230B is positioned on the color filters 230R, 230G, 230B.

[0458] The planarization layer 550 is provided to planarize the upper surface of the light-emitting display panel DP, and may be a transparent organic insulating layer including at least one material selected from polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0459] In embodiments, a low refractive index layer and an additional planarization layer may be further positioned on the planarization layer 550 to improve the front visibility and light output efficiency of the display panel DP.

[0460] In an embodiment, light can be refracted by the low refractive index layer and the additional planarization layer having high refractive properties and emitted toward the front surface.

[0461] In such an embodiment, planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be directly located on color filter 230 .

[0462] In such an embodiment, no polarizer is included on top of the planarization layer 550 .

[0463] In other words, the polarizer can prevent display quality from being deteriorated when external light is incident and reflected by the anode or the sidewall of the opening OP of the pixel defining layer 380 and is visible to the user.

[0464] However, since the polarizer not only reduces reflection of external light but also reduces light emitted from the light emitting layer EML, more power may be used to display a specific brightness due to the polarizer.

[0465] In an embodiment, the light emitting display device may not include a polarizer to reduce power consumption.

[0466] In an embodiment, the scattering layer 210 is formed under the light blocking layer 220, and the shape, size and / or arrangement of the opening OPSL of the scattering layer 210 may be formed differently. When external light is incident or reflected, the external light is scattered by the scattering layer 210 to prevent the external light from forming a specific diffraction pattern, thereby preventing degradation of display quality.

[0467] Therefore, in such an embodiment, a polarizer may not be separately formed in front of the light emitting display panel DP.

[0468] In an embodiment, Figure 7 As shown in FIG. 5 , the scattering layer 210 may be located between the third sensing insulating layer 511 and the light blocking layer 220 , but in another embodiment, the scattering layer 210 may be formed at a different position.

[0469] In the following, we will Figure 8 and Fig. 9 An embodiment in which the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are formed in a circular shape and the opening OPSL of the scattering layer 210 is formed in an elliptical shape is described based on the structure of the light emitting display panel DP formed in the display area DA.

[0470] Figure 8 and Fig. 9 is a plan view of a portion of a display panel according to an embodiment.

[0471] First, in Figure 8 , only one opening OP of the pixel defining layer 380 , one corresponding second opening OPBM of the light blocking layer 220 , and one corresponding opening OPSL of the scattering layer 210 are shown.

[0472] In an embodiment, Figure 8As shown in FIG. 1 , in a plan view or when viewed in the third direction DR3 , the pixel defining layer 380 is located outside the opening OP, the scattering layer 210 is located outside the opening OPSL of the scattering layer 210 , and the light blocking layer 220 is also located outside the second opening OPBM.

[0473] exist Figure 8 In the figure, hatching is additionally shown to indicate the portion of the scattering layer 210 which is not shielded by the light blocking layer 220 and is visible from the front side.

[0474] The shading throughout the figures indicates the scattering layer 210 that is not covered by the light blocking layer 220 and may indicate where light can be scattered by the particles (see Figure 7 The scattered part of 211).

[0475] In an embodiment, Figure 8 As shown in the figure, in a plan view, the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 have a circular plan shape, and the opening OPSL of the scattering layer 210 has an oval plan shape (e.g., an elliptical plan shape or a combination of multiple elliptical plan shapes).

[0476] The elliptical-shaped opening OPSL of the scattering layer 210 has a structure that is tangent to the circular opening OP of the pixel defining layer 380 and the circular second opening OPBM of the light blocking layer 220 at two points, respectively.

[0477] That is, the opening OPSL of the scattering layer 210 has a structure disposed outside and tangent to the opening OP of the pixel defining layer 380 and disposed inside and tangent to the second opening OPBM of the light blocking layer 220 .

[0478] In an embodiment, Figure 8 As shown in , the radius value Rop of the circular shape of the opening OP of the pixel defining layer 380 is substantially the same as the length Ropsl1 of the semi-minor axis of the elliptical shape of the opening OPSL of the scattering layer 210 and is smaller than the length Ropsl2 of the semi-major axis of the elliptical shape.

[0479] In this embodiment, the radius Ropbm of the circular shape of the second opening OPBM of the light blocking layer 220 is greater than the length Ropsl1 of the semi-minor axis of the elliptical shape of the opening OPSL of the scattering layer 210 and is equal to the length Ropsl2 of the semi-major axis of the elliptical shape.

[0480] A length Ropsl2 of a semi-major axis of the opening OPSL of the scattering layer 210 and a radius value Ropbm of the second opening OPBM of the light blocking layer 220 may be greater than a radius value Rop of a circular shape of the opening OP of the pixel defining layer 380, and a length Ropsl2 of a semi-major axis of the opening OPSL of the scattering layer 210 and a radius value Ropbm of the second opening OPBM of the light blocking layer 220 may be greater than a radius value Rop of a circular shape of the opening OP of the pixel defining layer 380 by more than 4.5 μm and less than 10 μm.

[0481] The length Ropsl2 of the semi-major axis may vary depending on the thickness of a layer (eg, an encapsulation layer) located between the scattering layer 210 and the pixel defining layer 380 in the cross section with respect to the horizontal spacing, and the encapsulation layer may have a thickness of about 6 μm.

[0482] Here, the ellipse has two foci, may have a shape connecting points whose sum of distances from the two foci is constant, and may have a major axis (or major axis) and a minor axis (or minor axis).

[0483] In an embodiment, the eccentricity of an ellipse is the distance between the two foci divided by the length of the major axis.

[0484] When the eccentricity is 0, the ellipse is a circle, and when the eccentricity is 1, the ellipse forms a parabola, so an ellipse has eccentricity values ​​greater than 0 and less than 1.

[0485] The eccentricity value of the elliptical shape of the opening OPSL of the scattering layer 210 may vary in various embodiments.

[0486] In an embodiment, the direction of the long axis of the opening OPSL of the scattering layer 210 may also be changed.

[0487] In an embodiment, Figure 8 As shown in FIG, the opening OPSL of the scattering layer 210 contacts the opening OP of the pixel defining layer 380 at two points in a plan view and contacts the second opening OPBM of the light blocking layer 220 at two points. However, due to an error during an actual process, a portion of one side of the opening OPSL of the scattering layer 210 may be covered by the light blocking layer 220 without overlapping the second opening OPBM of the light blocking layer 220.

[0488] With Figure 8 The opening OP of the pixel defining layer 380, the opening OPSL of the scattering layer 210, and the second opening OPBM of the light blocking layer 220 having the same structure as shown in FIG. 2 may be formed in the display area as shown in FIG. Fig. 9 Arrange as shown in .

[0489] exist Fig. 9In the figure, the opening OP of the pixel defining layer 380, the opening OPSL of the scattering layer 210 and the second opening OPBM of the light blocking layer 220, which correspond to the respective light emitting layers displaying the three primary colors of red, green and blue, are distinguished and are respectively shown as the openings OPr, OPg, OPb of the pixel defining layer 380, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220.

[0490] Here, r, g, and b may correspond to red, green, and blue, respectively.

[0491] exist Fig. 9 In, as mentioned above Figure 8 As described, the scattering layer 210 exposed by the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 is shown with shadows, and three different shadows are used to represent the red light emitting layer, the green light emitting layer and the blue light emitting layer that can be exposed by the openings OPr, OPg, OPb of the pixel defining layer, respectively.

[0492] In an embodiment, Fig. 9 As shown in FIG. 2 , the light emitting layer exposed by the openings OPr, OPg, OPb of the pixel defining layer 380 may not overlap with the scattering layer 210 .

[0493] The openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be arranged at various angles, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 for red, green, and blue may be arranged at various angles and may have different eccentricities from each other.

[0494] In an embodiment, the same-color openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may each be formed to have the same eccentricity, or may be formed to have two or more different eccentricities.

[0495] In an embodiment, the red openings OPr, green openings OPg and blue openings OPb of the pixel defining layer 380 and the red second openings OPBMr, green second openings OPBMg and blue second openings OPBMb of the light blocking layer 220 may be formed into circles with different radii, respectively, depending on the sizes of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210.

[0496] In an embodiment, the openings OPr, OPg, OPb and the second openings OPBMr, OPBMg, OPBMb of the same color may each have the same radius and be formed in the same size, or may be formed in two or more different sizes.

[0497] One opening OPr, OPg, OPb of the pixel defining layer 380 is disposed inside a corresponding opening OPSLr, OPSLg, OPSLb of the scattering layer 210 and a corresponding second opening OPBMr, OPBMg, OPBMb of the light blocking layer 220 .

[0498] That is, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 corresponding to each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 are located within the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220.

[0499] Each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, the corresponding openings OPSLr, OPSLg, OPSLb of the scattering layer 210, and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may overlap with each other in a plan view.

[0500] In the embodiments, as mentioned above Figure 8 As described, the elliptical openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged outside and tangent to the circular openings OPr, OPg, OPb of the pixel defining layer 380. In addition, the elliptical openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged inside and tangent to the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220.

[0501] In another embodiment, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be formed larger or smaller, intersecting with the boundaries of the openings OPr, OPg, OPb of the pixel defining layer 380 and / or the boundaries of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, not passing through each other, or not intersecting each other.

[0502] Various modified embodiments will be discussed in detail below.

[0503] In an embodiment, Fig. 9 As shown in , the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged in various directions, and the angles at which the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged may be described based on the direction of the major axis (or major axis) of the ellipse. That is, the arrangement direction of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be the same as the major axis direction of the openings OPSLr, OPSLg, OPSLb having an elliptical shape.

[0504] According to an embodiment, the long axes of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may have four or more different angles or directions, and further, the angles formed by the long axes may be arranged at angle intervals of 45 degrees or less. Herein, the angle formed by the long axes refers to the angle formed by the long axes relative to the first direction DR1 or the second direction DR2, unless the context clearly indicates otherwise.

[0505] Specific angle relationships in an embodiment having five angles will be described below.

[0506] In such an embodiment having five angles, the angles (or arrangement directions) of the major axes may be determined based on an angle interval of 36 degrees. That is, for a total of five angles, if one major axis has 0 degrees (or is arranged to form an angle of 0 degrees) based on the first direction DR1, the other major axes may have angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees based on the first direction DR1.

[0507] In other words, by dividing the angle of 180 degrees by the number of directions (which is 5), the angle interval (angle difference) between the angles of the major axis can be determined. This is because two angles with an angle difference of 180 degrees among the angles of 360 degrees are the same with respect to the major axis direction of the ellipse, so this means that the angle interval is calculated by dividing the number based on 180 degrees.

[0508] In an embodiment, as described above, in a case where the number of angles formed by the major axes of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 is four, the major axes may be arranged at angular intervals of 45 degrees.

[0509] In an embodiment, the angles formed by the major axes of the respective openings OPSLr, OPSLg, OPSLb may be arranged at irregular angle intervals of less than 45 degrees.

[0510] Embodiments in which the major axes of the openings are arranged at irregular angular intervals may be arranged intentionally to reduce diffraction patterns, or may be arranged at irregular angular intervals due to process errors.

[0511] In an embodiment, in order to make a unit pixel including a red opening, a green opening, and a blue opening have a square structure, the angle of the long axis is divided into squares equal to an integer (for example, 2 2 , 3 2 , 4 2 , 5 2 It may be appropriate to form a unit pixel with a corresponding number of .

[0512] Here, the unit pixel may include at least each of a red opening, a green opening, and a blue opening, and a plurality of openings may be formed for one color, for example, a green opening.

[0513] In this manner, the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are formed in a circular shape. Reference will be made to the example in which the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed in an elliptical shape. Fig.10 To describe the reflection characteristics.

[0514] Fig.10 is a table showing characteristics of comparative examples and embodiments.

[0515] exist Fig.10 It is shown in Fig. 9 Characteristics of the embodiment and three comparative examples (Comparative Example 0, Comparative Example 1, and Complete Overlap Comparative Example).

[0516] In Comparative Example 0, only the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are formed in a circular shape, and the scattering layer 210 is not included.

[0517] In Comparative Example 1, the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are formed in a circular shape, and also include a scattering layer 210, which is formed over the entire area, so no opening is formed in the scattering layer 210.

[0518] In a completely overlapping comparative example (also referred to as a completely overlapping comparative example), the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are formed in a circular shape, the openings OPSLr, OPSLg, OPSLb are formed in the scattering layer 210 and are formed in a circular shape, and the openings OPr, OPg, OPb of the pixel defining layer 380 completely overlap with the openings OPSLr, OPSLg, OPSLb of the scattering layer 210.

[0519] These comparison examples are Fig. 9 A comparison of the embodiments is as follows.

[0520] Comparative Example 0 has an undesirable characteristic of high reflectivity, and thus a diffraction pattern generated when external light is reflected is easily visible to a user.

[0521] In contrast, comparison example 1, the complete overlap comparison example and Fig. 9The embodiment includes the scattering layer 210, and thus the intensity of the diffraction pattern can be reduced due to external light being scattered.

[0522] When the scattering layer 210 is positioned across the entire area as in Comparative Example 1, the degree of reflection of external light can be most significantly reduced, but in Comparative Example 1, light transmitted from the light-emitting diode to the front side is also scattered, which reduces the light output efficiency, and there is a disadvantage that a separate diffraction pattern such as a rainbow diffraction pattern can be recognized.

[0523] In order to overcome the undesirable characteristics of Comparative Example 1, an opening may be formed in the scattering layer 210 .

[0524] In the complete overlap comparison example and Fig. 9 In the embodiments of the present invention, each of the openings OPSLr, OPSLg, and OPSLb is formed in the scattering layer 210, and therefore most of the light transmitted from the light emitting diode to the front side is not scattered, which eliminates the display quality degradation similar to that of Comparative Example 1. However, there is a region in which the scattering layer 210 is not formed, and therefore the reflection of external light is higher than that of Comparative Example 1 but lower than that of Comparative Example 0, and the diffraction pattern generated when the external light is reflected can be recognized with a moderate intensity.

[0525] Therefore, the complete overlap comparison example and the Fig. 9 The embodiment may be desirable because the diffraction pattern of external light is weaker than that of the case without the scattering layer 210, and at the same time, unlike Comparative Example 1 in which no opening is formed in the scattering layer 210, it has an advantage of not forming a rainbow color diffraction pattern.

[0526] Complete Overlap Comparison Example Fig. 9 The difference between the embodiments is whether the openings OPr, OPg, OPb of the pixel defining layer 380 and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 completely match or have some difference in a plan view.

[0527] Furthermore, in the full overlap comparison example, all openings are circular and formed at a constant angle, but in Fig. 9 In the embodiment of the present invention, the openings OPSLr, OPSLg, OPSLb having an elliptical shape of the scattering layer 210 are formed at various angles. Alternatively, the size or shape may be changed by changing the eccentricity so that the diffraction pattern is not uniformly generated, further improving the undesirable characteristic that the diffraction pattern is visible, and the diffraction pattern may become difficult for the user to see.

[0528] Will refer to it later Figures 29 to 34 Embodiments in which the openings in an oval shape are formed at various angles or eccentricities will be described.

[0529] In another embodiment, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be located only within the openings OPr, OPg, OPb of the pixel defining layer 380. Fig.11 This embodiment is described below.

[0530] Fig.11 is a plan view of a portion of a display panel according to another embodiment.

[0531] exist Fig.11 In the embodiment, as mentioned above Figure 8 As described, the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have circular shapes in a plan view, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 have elliptical shapes in a plan view.

[0532] In this embodiment, if Fig.11 As shown in FIG. 1 , the elliptical openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are located within the openings OPr, OPg, OPb of the pixel defining layer 380 and have a structure contacting the openings OPr, OPg, OPb of the pixel defining layer 380 at two points.

[0533] That is, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 have a structure that is tangent to the openings OPr, OPg, OPb of the pixel defining layer 380 .

[0534] exist Fig.11 , the shadow indicating the scattering layer 210 exposed by the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 is located within the shadows showing the light emitting layers that may be exposed by the openings OPr, OPg, OPb of the pixel defining layer 380, respectively.

[0535] As a result, in such an embodiment, a portion of each light emitting layer overlaps with the scattering layer 210 in a plan view, and the remaining portion overlaps with the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 .

[0536] Except for comparison example 0, comparison example 1, and the complete overlap comparison example and Fig. 9 In addition to the characteristics of the embodiments, Fig.12 The table also shows Fig.11 Characteristics of the embodiments.

[0537] Fig.12 is a table showing the photographed reflection characteristics of the comparative example and the embodiment.

[0538] Fig.12 include Fig.11 Embodiments and Fig.10 The comparison examples 0, 1, and 2 are shown in FIG. Fig. 9 Photographs of the reflective properties of the examples.

[0539] exist Fig.12 , two types of photos are included, one of which is taken with external light provided at a distance of 10 centimeters (cm), and the other is taken with external light provided at a distance of 30 cm.

[0540] Here, the photo taken at 10cm shows the size and intensity of the halo produced around the strong light, and the photo taken at 30cm shows the characteristics of the external light being reflected and diffracted.

[0541] In addition, Fig.12 In FIG. 5 , the front efficiency and LvA value are shown.

[0542] Here, the front efficiency is the front brightness ratio in each comparative example and embodiment when the front brightness of comparative example 0 is set to 100%. The LvA value is an abbreviation representing brightness value to angle, which is a brightness ratio of 45 degrees to the front brightness.

[0543] refer to Fig.12 , in the photograph taken by arranging the external light at a close distance position (10 cm), the difference in the diffraction pattern between the comparative example and the embodiment can be seen more clearly.

[0544] In Comparative Example 0, the gaps between the diffraction patterns are not large, but a ring-shaped halo is clearly visible, and in Comparative Example 1, a rainbow-colored diffraction pattern is visible.

[0545] In comparison, it can be confirmed that the complete overlap comparison example in which the openings OPSLr, OPSLg, OPSLb are formed in the scattering layer 210 and Fig. 9 and Fig.11 The diffraction pattern of the embodiment is relatively weakly visible.

[0546] However, reference Fig.12 , it can be seen that even in the fully overlapped comparison example and Fig. 9 and Fig.11 In the embodiment of , the diffraction pattern is also weakly visible, so it may be desirable to make the diffraction pattern even weaker.

[0547] Unlike the full overlap comparison example, Fig. 9 and Fig.11In an embodiment including an opening of an elliptical shape, and the elliptical shape is arranged at various angles or formed at various eccentricities, the diffraction pattern is formed to be blurred while less constructive interference occurs.

[0548] Therefore, according to Fig. 9 and Fig.11 In the light emitting display device of the embodiment, if the angles of the openings of the elliptical shape are randomly arranged, Fig.12 The light-emitting display device can have an improved diffraction pattern compared to the photographs taken in the figure, and can have an improved diffraction pattern even compared to the complete overlap comparison example.

[0549] In an embodiment, if in the Fig. 9 and Fig.11 The eccentricity, shape or size of the opening formed in various ways in the light-emitting display device of the embodiment of the present invention is related to Fig.12 Compared with the photos taken in the fully overlapped comparison example, the light-emitting display device can have an improved diffraction pattern.

[0550] exist Fig.12 It can be seen that Comparative Example 1 has the lowest front efficiency and completely overlaps Comparative Example, Fig. 9 Examples and Fig.11 The embodiment of has a front brightness comparable to that of Comparative Example 0.

[0551] Specifically, if Fig. 9 As in the embodiment, when the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are tangent to the openings OPr, OPg, OPb of the pixel defining layer 380, the front efficiency is 100.2%, which exceeds 100%, so it can be confirmed that high front efficiency can be maintained while having an improved diffraction pattern.

[0552] In addition, referring to the LvA value, it can be seen that Fig. 9 and Fig.11 The brightness of the embodiment at 45 degrees is almost similar to that of the comparative example 0, so even if Fig. 9 and Fig.11 The embodiment is applied to a light-emitting display device, and it can be confirmed that there is no problem of display quality degradation at a 45-degree viewing angle.

[0553] Now refer to Fig.13 and Fig.14 to describe this difference in frontal efficiency.

[0554] Fig.13 is an enlarged cross-sectional view of a portion of a display panel according to an embodiment, and Fig.14 is an enlarged cross-sectional view of a portion of a display panel according to a comparative example.

[0555] Fig.13 A complete overlap comparison example is shown. Fig. 9 Examples and Fig.11 As in the embodiment of the present invention, an opening OPLS structure is formed in the scattering layer 210, and Fig.14 A structure without an opening in the scattering layer 210 as in Comparative Example 1 is shown.

[0556] Fig.13 and Fig.14 The light emitting layer EML, the pixel defining layer 380 , the encapsulation layer 400 , the scattering layer 210 and the light blocking layer 220 are only schematically shown, wherein the scattering layer 210 includes a plurality of scattering particles 211 .

[0557] exist Fig.13 and Fig.14 Both of them provide an opening OP of the pixel defining layer 380 and a second opening OPBM of the light blocking layer 220, but in Fig.13 In the embodiment of Fig.14 Unlike Comparative Example 1, an opening OPLS is further formed in the scattering layer 210 .

[0558] like Fig.13 and Fig.14 As shown in , since light emitted from the light emitting layer EML is provided to the front instead of being refracted to the side due to the opening OPLS of the scattering layer 210, the front brightness can be improved.

[0559] Therefore, as Fig.12 The front efficiency is the same, completely overlapping comparison examples, Fig. 9 Examples and Fig.11 The embodiment of has a front brightness comparable to that of Comparative Example 0, and it can be seen that the front efficiency is reduced because more light is scattered to the side as shown in Comparative Example 1.

[0560] refer to Fig.10 and Fig.12 , a light-emitting display device that does not include a polarizer on the front surface may have desirable characteristics in terms of thickness and manufacturing cost, but has an undesirable characteristic in that a diffraction phenomenon is strongly visible due to high reflectivity of external light.

[0561] In order to overcome the diffraction phenomenon, in an embodiment, a scattering layer 210 is provided to scatter external light and / or diffracted light, thereby reducing the diffraction pattern and lowering the visibility of the diffraction pattern.

[0562] However, if the scattering layer 210 covering the entire surface is applied as in Comparative Example 1, the reflection diffraction can be reduced, but the light emitted to the front for display is also scattered, resulting in a decrease in the front efficiency.

[0563] To improve front efficiency, in an embodiment, an opening OPSL is formed in the scattering layer 210 .

[0564] The diffraction phenomenon mainly occurs at the edge of the opening (the opening OP of the pixel defining layer 380, the second opening OPBM of the light blocking layer 220 and / or the opening OPSL of the scattering layer 210), and therefore, by Fig. 9 and Fig.11 Diffraction phenomena can be further reduced by not applying the scattering layer to the entire surface as in the embodiment of FIG. 1 and by not forming a constant horizontal spacing between the openings, or by removing the directivity.

[0565] Therefore, in an embodiment, the opening OPSL of the scattering layer 210 may be formed in the central portion of the light emitting layer EML (the opening OP of the pixel defining layer 380 ) to reduce diffraction and minimize reduction in front efficiency.

[0566] In such an embodiment, the sizes and positional relationships of the opening OP of the pixel defining layer 380, the second opening OPBM of the light blocking layer 220, and the opening OPSL of the scattering layer 210 may be arranged in various ways. In the case of an ellipse, there may be various embodiments in which the major axis direction or eccentricity, etc. are changed.

[0567] In the following we will refer to Figures 15 to 28 Various embodiments are described.

[0568] Figures 15 to 28 is a plan view of a portion of a display panel according to another embodiment.

[0569] First, we will describe Figures 15 to 17 Embodiment of the invention.

[0570] exist Figures 15 to 17 , a portion of the opening OPSL of the scattering layer 210 shown with a dotted line represents a portion blocked by the light blocking layer 220 , and a shaded portion represents a portion of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 .

[0571] exist Figures 15 to 17 , various embodiments are shown in which the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are formed in a circular planar shape, and the opening OPSL of the scattering layer 210 has an elliptical planar shape.

[0572] Figures 15 to 17 yes Figure 8 A modified embodiment, wherein, as Figure 8 As shown in FIG. 1 , the opening OPSL of the scattering layer 210 is at the periphery with respect to the opening OP of the pixel defining layer 380 , and does not include a structure at the periphery of the second opening OPBM of the light blocking layer 220 .

[0573] Fig.15 Various embodiments in which the openings OPSL of the scattering layer 210 contact only the openings OP of the pixel defining layer 380 are illustrated.

[0574] Fig.15 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the opening OP of the pixel defining layer 380 but does not contact the second opening OPBM of the light blocking layer 220 , and the opening OPSL of the scattering layer 210 is located within the second opening OPBM of the light blocking layer 220 .

[0575] Fig.15 (B) shows an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the opening OP of the pixel defining layer 380 but does not contact the second opening OPBM of the light blocking layer 220, and a portion of the opening OPSL of the scattering layer 210 is located outside the second opening OPBM of the light blocking layer 220.

[0576] Fig.15 (C) and Fig.11 , and illustrates an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the opening OP of the pixel defining layer 380.

[0577] In such an embodiment, Fig.15 As shown in (C), the opening OPSL of the scattering layer 210 is located only within the opening OP of the pixel defining layer 380 .

[0578] Fig.16 Various embodiments are shown in which the openings OPSL of the scattering layer 210 contact only the second openings OPBM of the light blocking layer 220 .

[0579] Fig.16 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the second opening OPBM of the light blocking layer 220 but does not contact the opening OP of the pixel defining layer 380 , and a portion of the opening OP of the pixel defining layer 380 is shielded by the scattering layer 210 .

[0580] In such an embodiment, a portion of the opening OP of the pixel defining layer 380 may not overlap with the opening OPSL of the scattering layer 210 in a plan view.

[0581] Fig.16 (B) shows an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the second opening OPBM of the light blocking layer 220 but is not tangent to the opening OP of the pixel defining layer 380 , and the opening OP of the pixel defining layer 380 is not shielded by the scattering layer 210 .

[0582] In such an embodiment, the opening OP of the pixel defining layer 380 is located within the opening OPSL of the scattering layer 210 in a plan view.

[0583] exist Fig.17 , various embodiments in which the openings OPSL of the scattering layer 210 contact neither the second openings OPBM of the light blocking layer 220 nor the openings OP of the pixel defining layer 380 are illustrated.

[0584] Fig.17 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 , and the opening OP of the pixel defining layer 380 is not shielded by the scattering layer 210 .

[0585] In such an embodiment, in a plan view, the opening OP of the pixel defining layer 380 is located within the opening OPSL of the scattering layer 210 , and the opening OPSL of the scattering layer 210 is located within the second opening OPBM of the light blocking layer 220 .

[0586] Fig.17 (B) shows an embodiment in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 , and a portion of the opening OP of the pixel defining layer 380 is shielded by the scattering layer 210 .

[0587] In such an embodiment, in a plan view, a portion of the opening OP of the pixel defining layer 380 is located inside the opening OPSL of the scattering layer 210 , and a portion of the opening OPSL of the scattering layer 210 is located outside the opening OP of the pixel defining layer 380 .

[0588] In such an embodiment, the opening OPSL of the scattering layer 210 is located within the second opening OPBM of the light blocking layer 220 in a plan view.

[0589] Fig.17 (C) shows an embodiment in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380, and the opening OP of the pixel defining layer 380 is not shielded by the scattering layer 210, but a portion of the opening OPSL of the scattering layer 210 is shown as being located outside the second opening OPBM of the light blocking layer 220.

[0590] Fig.17 (D) shows an embodiment in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 in a plan view, and the opening OPSL of the scattering layer 210 is located within the opening OP of the pixel defining layer 380 .

[0591] Figures 15 to 17 An embodiment is shown in which one opening OPSL of the scattering layer 210 , one second opening OPBM of the light blocking layer 220 , and one opening OP of the pixel defining layer 380 correspond to each other.

[0592] In such an embodiment, the openings OPSL having an elliptical shape of the scattering layer 210 may be arranged in various arrangement (long axis) directions.

[0593] Reference Fig.18 One of the embodiments formed with various major axis directions is described.

[0594] Fig.18 It shows the arrangement Fig.16 An embodiment of a unit pixel of an embodiment of (A). In this embodiment, circular shapes and elliptical shapes of different colors have different sizes and / or eccentricities, and elliptical shapes of the same color have the same size and / or eccentricity and have different arrangement (or long axis) directions.

[0595] exist Fig.18 , the scattering layer 210 exposed by the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 is represented by hatching, and further, the red, green and blue light emitting layers exposed by the openings OPr, OPg, OPb of the pixel defining layer 380 are represented by separate hatching.

[0596] As a result, Fig.18 In the embodiment of FIG. 2 , a portion of the light emitting layer of each color has a structure overlapping with the scattering layer 210 in a plan view.

[0597] exist Fig.18 In the embodiment, the circular shape and the elliptical shape of the same color have the same size and eccentricity as each other, and the major axis directions of the elliptical shapes are arranged differently from each other.

[0598] That is to say, Fig.18 , two green openings OPg of the pixel defining layer 380 are shown, and the two green openings OPg of the pixel defining layer 380 have the same area or radius length as each other, and the two green second openings OPBMg of the light blocking layer 220 also have the same area or radius length as each other.

[0599] In an embodiment, the two green openings OPSLg of the scattering layer 210 are formed in an elliptical shape having the same eccentricity, but major axes of the elliptical shapes are arranged in different directions.

[0600] That is, in such an embodiment, the elliptical-shaped openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 may have the same eccentricity as each other but different major axis directions.

[0601] In which Fig.18 In the embodiment in which the long-axis directions of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged in various ways as shown in , it is possible to prevent external light from forming a constant diffraction pattern and thereby prevent degradation of display quality.

[0602] Specifically, Fig.18 The embodiments may have the same Fig.10 or Fig.12 Described Fig. 9 The embodiment has similar external light reflection characteristics, the diffraction pattern is weaker than the diffraction pattern of comparative example 0, so the diffraction pattern is not easily visible, and the front efficiency can be improved compared with comparative example 1.

[0603] Furthermore, an elliptical shape may be formed by arranging the major axis directions in various ways to have an improved external light diffraction pattern.

[0604] In an embodiment, a circular shape and an elliptical shape of the same color may be formed to have different sizes and eccentricities from each other.

[0605] That is, in another embodiment, the two green openings OPg of the pixel defining layer 380 have different areas or radial lengths from each other, and the two green second openings OPBMg of the light blocking layer 220 also have different areas or radial lengths from each other, and the two green openings OPSLg of the scattering layer 210 can be formed into elliptical shapes with different eccentricities from each other.

[0606] In such an embodiment, two long axes of the green openings OPSLg of the scattering layer 210 may be arranged in the same direction or in different directions.

[0607] Since this embodiment has Fig.18 The elliptical shape variation of the embodiment is large, so external light may not form a constant diffraction pattern, and degradation of display quality can be more effectively prevented.

[0608] In an embodiment, at least one of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be as follows: Fig.10In the embodiment, only some of the openings OPSLr, OPSLg, OPSLb are omitted, and the others may have a structure including the openings (see Fig.21 ).

[0609] In this embodiment, as described above, the eccentricity of the openings OPSLr, OPSLg, OPSLb having an elliptical shape of the scattering layer 210 may have a value greater than 0 and less than 1, and the angles formed by the respective major axes may have four or more angles, and the angles formed by the major axes may be arranged at regular angular intervals of less than 45 degrees.

[0610] In an embodiment, the angles formed by the major axes of the elliptical shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0611] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0612] In an embodiment, a maximum horizontal spacing between the openings may be about 4.5 μm or more and about 10 μm or less.

[0613] exist Fig.18 In an embodiment of the present invention, a total of four pixels including a red opening, a green opening, and a blue opening are included in one unit pixel. In this embodiment, two green openings are included, and one red opening and one blue opening are included.

[0614] However, the colors of two pixels having the same color in one unit pixel may be red or blue, and the positions of the openings corresponding to the four pixels may be different from each other. Fig.18 The positions shown in are arranged differently.

[0615] In an embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0616] In the following we will refer to Figures 19 to 21 An embodiment in which the planar shapes of the openings OP of the pixel defining layer 380 , the second openings OPBM of the light blocking layer 220 , and the openings OPSL of the scattering layer 210 are all formed in circular shapes will be described.

[0617] In such an embodiment, the opening OP of the pixel defining layer 380 , the second opening OPBM of the light blocking layer 220 , and the opening OPSL of the scattering layer 210 have centers that coincide with each other in a plan view.

[0618] That is to say, despite Figures 19 to 21 An embodiment having a structure in which all the centers of the circles coincide is illustrated, but in another embodiment, the centers of the circles may not coincide with each other.

[0619] Fig.19 2 shows that the sizes of the openings OP of the pixel defining layer 380 are the same as each other and the sizes of the second openings OPBM of the light blocking layer 220 are the same as each other, while only the size of the openings OPSL of the scattering layer 210 is as shown in FIG. Fig.19 (A) and Fig.19 The embodiment that is changed as shown in (B) is distinguished.

[0620] In an embodiment, Fig.19 As shown in (A) of FIG. 3 , the opening OPSL of the scattering layer 210 is formed to be minimum, and the opening OPSL of the scattering layer 210 is within the opening OP of the pixel defining layer 380 .

[0621] As a result, in such an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 has a structure overlapping with the opening OP of the pixel defining layer 380 in a plan view.

[0622] In an embodiment, Fig.19 As shown in (B) of FIG. 1 , the opening OPSL of the scattering layer 210 is larger than the opening OP of the pixel defining layer 380 and smaller than the second opening OPBM of the light blocking layer 220 . Therefore, the opening OP of the pixel defining layer 380 is located within the opening OPSL of the scattering layer 210 .

[0623] As a result, in such an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 has a structure that does not overlap with the opening OP of the pixel defining layer 380 in a plan view.

[0624] In another embodiment, the opening OPSL of the scattering layer 210 may be formed to coincide with the opening OP of the pixel defining layer 380 in a plan view.

[0625] exist Fig. 20 , which shows the arrangement Fig.19 (A) is an embodiment of a unit pixel of the embodiment.

[0626] Fig. 20 The embodiments can be compared with the above reference Fig.10 or Fig.12 The described complete overlap comparative example has similar external light reflection characteristics, the diffraction pattern is weaker than the diffraction pattern of comparative example 0, so the diffraction pattern is not easily visible, and the front efficiency is improved compared with comparative example 1.

[0627] In such an embodiment, Fig. 20 As shown in , the sizes of circles of different colors are different from each other, and the sizes of circles of the same color are the same as each other.

[0628] However, in another embodiment, the sizes of circles of the same color may be different from each other.

[0629] In this embodiment, Fig. 20 Differently, the two green openings OPg of the pixel defining layer 380 have different areas or radius lengths, and the two green second openings OPBMg of the light blocking layer 220 also have different areas or radius lengths, and the two green openings OPSLg of the scattering layer 210 can also be formed into circular shapes with different areas or radius lengths.

[0630] In an embodiment, Fig. 20 As shown in FIG. 1 , the opening OP of the pixel defining layer 380 , the second opening OPBM of the light blocking layer 220 , and the opening OPSL of the scattering layer 210 have centers coincident with each other in a plan view.

[0631] In such an embodiment where the centers of the circles coincide with each other in a plan view, by being covered by the scattering layer 210, the degree of light scattering does not differ depending on the viewing direction of the user, which may allow display quality independent of the viewing angle.

[0632] In another embodiment, the centers of the circles may not coincide with each other in the plan view, but if the centers of the circles do not coincide with each other, a difference in display quality may occur depending on the viewing direction of the user. Therefore, the centers of the circles may be changed randomly, so that a difference in display quality depending on the angle caused by the centers not coinciding with each other can be effectively prevented.

[0633] exist Fig. 20 In an embodiment of the present invention, a total of four pixels including a red opening, a green opening, and a blue opening are included in one unit pixel. In this embodiment, two green openings are included, and one red opening and one blue opening are included.

[0634] However, the colors of two pixels having the same color in one unit pixel may be red or blue, and the positions of the openings corresponding to the four pixels may be different from each other. Fig. 20 Arranged differently.

[0635] In another embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0636] In another embodiment, at least one of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be as follows: Fig.10 The comparative example 1 is omitted, and reference will now be made to Fig.21 This embodiment is described below.

[0637] exist Fig.21 Four embodiments among various embodiments are shown in FIG.

[0638] In an embodiment, Fig.21 As shown in (A), the red opening is Fig.19 (A) has the same shape, but no scattering layer openings are formed in the green openings and the blue openings, so only the red openings OPSLr are formed in the scattering layer 210, and the green openings OPSLg and the blue openings OPSLb are not formed.

[0639] In an embodiment, Fig.21 As shown in (B), the green opening is Fig.19 (A) has the same shape, but no scattering layer openings are formed in the red openings and the blue openings, so only the green openings OPSLg are formed in the scattering layer 210, and the red openings OPSLr and the blue openings OPSLb are not formed.

[0640] In an embodiment, Fig.21 As shown in (C), the blue opening is Fig.19 (A) has the same shape, but no scattering layer opening is formed in the red opening and the green opening. In this embodiment, only the blue opening OPSLb is formed in the scattering layer 210, and the red opening OPSLr of the scattering layer 210 and the green opening OPSLg of the scattering layer 210 are not formed.

[0641] In an embodiment, Fig.21 As shown in (D), in the plan view, a red opening OPSLr is formed in the red opening, a blue opening OPSLb is not formed in the blue opening, and a green opening OPSLg is formed in some of the green openings OPg in the unit pixels, but is not formed in other of the green openings OPg in the unit pixels.

[0642] That is to say, Fig.21 In (D), the red opening OPSLr and the green opening OPSLg of the scattering layer 210 are formed, and the red opening OPSLr of the scattering layer 210 is formed in all the red openings.

[0643] However, some of the green openings OPg of the pixel defining layer 380 have corresponding green openings OPSLg of the scattering layer 210 therein, but other green openings OPg do not have the green openings OPSLg of the scattering layer 210 , and thus have a structure covered by the scattering layer 210 .

[0644] In an embodiment, Fig.21Unlike (D), the color of the openings in which the scattering layer 210 is not formed may be changed, and even in the red openings and / or the blue openings, some openings in the scattering layer 210 are not formed.

[0645] Fig.21 The various embodiments shown in the Fig.10 and Fig.12 The reflective characteristics are improved compared to the comparative example 1 described above. Therefore, this embodiment can have Fig.10 and Fig.12 The reflection characteristics are approximately intermediate between the reflection characteristics of Comparative Example 1 in FIG. 1 and the reflection characteristics of the complete overlap comparative example.

[0646] In this embodiment, compared with Comparative Example 0, since external light is scattered, the intensity of the diffraction pattern is further reduced to make it difficult for the user to view the scattering pattern, and compared with Comparative Example 1, the front efficiency is improved.

[0647] In the embodiments, reference Fig.21 (D), the color of reflection can be changed depending on the position of the opening of the scattering layer 210, and an additional effect of adjusting the color of reflected light can be obtained.

[0648] Specifically, various embodiments may be separately described as follows with reference to an SCI (specular component included) index and an SCE (specular component excluded) index corresponding to a color.

[0649] exist Fig.21 In (A), the a and b factors in the SCI index increase, but the a and b factors in the SCE index decrease. Fig.21 In (B), the a factor decreases and the b factor increases in the SCI index, but the a factor increases and the b factor decreases in the SCE index. Fig.21 In (C), the a factor increases and the b factor decreases in the SCI index, and the a factor increases and the b factor decreases in the SCE index.

[0650] Since the reflection characteristics vary depending on the positions of the openings of the scattering layer 210, the reflection characteristics can be changed by Fig.21 As shown in (D) of FIG. 1 , the positions of the openings of the scattering layer 210 are adjusted to optimize the SCI index and / or the SCE index as needed.

[0651] Fig.21 (D) is an exemplary embodiment, and the opening of the scattering layer 210 may be located at Fig.21 The positions are different from the positions shown in (D).

[0652] In the following we will refer to Figure 22 to Figure 26An embodiment in which the planar shapes of the opening OP of the pixel defining layer 380 , the second opening OPBM of the light blocking layer 220 , and the opening OPSL of the scattering layer 210 are all formed in an elliptical shape will be described.

[0653] First, refer to Fig. 22 An embodiment is described in which the directions of the major axes of the respective elliptical shapes are matched.

[0654] refer to Fig. 22 , the elliptical shapes and sizes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are shown to be identical to each other, and the opening OPSL of the scattering layer 210 is distinguishably shown as only changing in size and / or eccentricity.

[0655] Fig. 22 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 and the opening OP of the pixel defining layer 380 have coincident boundaries in a plan view, and the opening OP of the pixel defining layer 380 and the opening OPSL of the scattering layer 210 have the same eccentricity as each other.

[0656] In an embodiment, Fig. 22 As shown in (B), the opening OPSL of the scattering layer 210 may be larger than the opening OP of the pixel defining layer 380 and smaller than the second opening OPBM of the light blocking layer 220. In this embodiment, the opening OP of the pixel defining layer 380 is located within the opening OPSL of the scattering layer 210.

[0657] As a result, a portion (a shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 has a structure that does not overlap with the opening OP of the pixel defining layer 380 in a plan view.

[0658] Fig. 22 (C) shows an embodiment in which the opening OPSL of the scattering layer 210 is formed to be minimum, and the opening OPSL of the scattering layer 210 is within the opening OP of the pixel defining layer 380 .

[0659] As a result, a portion (a shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 has a structure overlapping with the opening OP of the pixel defining layer 380 in a plan view.

[0660] exist Fig. 22 , the elliptical shapes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are shown to have the same major axis direction, but may be formed in different major axis directions.

[0661] Fig.23 It shows the arrangement Fig. 22(A) is an embodiment of a unit pixel of an embodiment.

[0662] exist Fig.23 In the embodiment, the elliptical shapes of the same color have the same size and eccentricity as each other, and the major axis directions of the elliptical shapes are arranged differently.

[0663] That is to say, Fig.23 , two green openings OPg of the pixel defining layer 380 are shown, and the two green openings OPg of the pixel defining layer 380 have the same area or eccentricity as each other, and the two green second openings OPBMg of the light blocking layer 220 also have the same area or eccentricity as each other.

[0664] In an embodiment, the two green openings OPSLg of the scattering layer 210 are formed in an elliptical shape having the same eccentricity, but major axes of the elliptical shapes are arranged in different directions.

[0665] That is, in this embodiment, the elliptical-shaped openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 have the same eccentricity but different major axis directions.

[0666] In which Fig.23 In the embodiment in which the long-axis directions of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged in various ways as shown in , it is possible to prevent external light from forming a constant diffraction pattern and thereby prevent degradation of display quality.

[0667] Specifically, Fig.23 The embodiments can be compared with the above reference Fig.10 or Fig.12 The described complete overlap comparative example has similar external light reflection characteristics, and the diffraction pattern can be weaker than that of comparative example 0, so that the diffraction pattern is not easily recognized, and the front efficiency can be further improved compared with comparative example 1.

[0668] Furthermore, by arranging the major axis directions in various ways, an elliptical shape can be formed to have a more improved external light diffraction pattern.

[0669] In another embodiment, oval shapes of the same color may be formed to have different sizes or eccentricities.

[0670] That is, in the embodiment, Fig.23 Differently, the two green openings OPg of the pixel defining layer 380 have different areas or eccentricities, the two green second openings OPBMg of the light blocking layer 220 also have different areas or eccentricities, and the two green openings OPSLg of the scattering layer 210 can also be formed into elliptical shapes with different eccentricities.

[0671] In such an embodiment, two long axes of the green openings OPSLg of the scattering layer 210 may have the same direction or may be arranged in different directions.

[0672] Since this embodiment has Fig.23 The elliptical shape variation of the embodiment is large, so external light may not form a constant diffraction pattern, and degradation of display quality may be effectively prevented.

[0673] In an embodiment, at least one of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be as follows: Fig.10 In another embodiment, only some of the openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 may be omitted, and the others may have a structure including the openings (see Fig.21 ).

[0674] Here, the eccentricity of the opening of the elliptical shape may have a value greater than 0 and less than 1, and the angles formed by the respective major axes have four or more angles, and the angles formed by the major axes are arranged at regular angular intervals of 45 degrees or less.

[0675] In an embodiment, the angles formed by the major axes of the elliptical shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0676] Such an embodiment in which the major axes are arranged at irregular angular intervals may be intentionally randomly arranged to reduce a diffraction pattern, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0677] In addition, a maximum horizontal interval between the openings may be about 4.5 μm or more and about 10 μm or less.

[0678] exist Fig.23 In an embodiment of the present invention, a total of four pixels including a red opening, a green opening, and a blue opening are included in one unit pixel. In this embodiment, two green openings are included, and one red opening and one blue opening are included.

[0679] However, the color of two pixels having the same color may be red or blue, and the positions of the openings corresponding to the four pixels may be different from Fig.23 The positions shown in are arranged differently.

[0680] In an embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0681] In the following we will refer to Fig.24 An embodiment in which the long axis direction of the opening OPSL of the scattering layer 210 is perpendicular to the long axis direction of the opening OP of the pixel defining layer 380 and / or the second opening OPBM of the light blocking layer 220 will be described.

[0682] refer to Fig.24 , the elliptical shape and size of the opening OP of the pixel defining layer 380 are shown to be the same as each other, the elliptical shape and size of the second opening OPBM of the light blocking layer 220 are shown to be the same as each other, and the opening OPSL of the scattering layer 210 is distinguished by changing only the size and / or eccentricity.

[0683] Fig.24 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 is tangent to the second opening OPBM of the light blocking layer 220, and the opening OP of the pixel defining layer 380 and the opening OPSL of the scattering layer 210 have a structure overlapping in some areas in a plan view.

[0684] As a result, in such an embodiment, a structure is formed in which a portion (shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 overlaps only a portion of the opening OP of the pixel defining layer 380 in a plan view.

[0685] In an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second openings OPBM of the light blocking layer 220 only overlaps with the second openings OPBM of the light blocking layer 220 in a plan view.

[0686] Fig.24 (B) shows an embodiment in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380, and in a plan view, a portion of the opening OPSL of the scattering layer 210 overlaps with the opening OP of the pixel defining layer 380, and the remaining portion does not overlap with the opening OP of the pixel defining layer 380.

[0687] As a result, in such an embodiment, a structure is formed in which a portion (shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 overlaps only a portion of the opening OP of the pixel defining layer 380 in a plan view.

[0688] In an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second openings OPBM of the light blocking layer 220 only overlaps with the second openings OPBM of the light blocking layer 220 in a plan view.

[0689] Fig.24(C) shows an embodiment in which the opening OPSL of the scattering layer 210 has a structure tangent to the opening OP of the pixel defining layer 380 , and the opening OPSL of the scattering layer 210 is located within the opening OP of the pixel defining layer 380 .

[0690] As a result, in such an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 has a structure in which it is located only within the opening OP of the pixel defining layer 380 in a plan view.

[0691] Fig.24 (D) shows a structure in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380, and a portion of the opening OPSL of the scattering layer 210 has a structure that does not overlap with the second opening OPBM of the light blocking layer 220 in a plan view.

[0692] As a result, in such an embodiment, a portion (shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 overlaps a portion of the opening OP of the pixel defining layer 380 and / or a portion of the second opening OPBM of the light blocking layer 220 in a plan view.

[0693] Fig.25 It shows the arrangement Fig.24 (B) is an embodiment of a unit pixel of the embodiment.

[0694] exist Fig.25 In the embodiment, the elliptical shapes of the same color have the same size and eccentricity, and the major axis directions of the elliptical shapes are arranged differently.

[0695] That is to say, Fig.25 , two green openings OPg of the pixel defining layer 380 are shown, and the two green openings OPg of the pixel defining layer 380 have the same area or eccentricity, and the two green second openings OPBMg of the light blocking layer 220 also have the same area or eccentricity.

[0696] In an embodiment, the two green openings OPSLg of the scattering layer 210 are formed in an elliptical shape having the same eccentricity, but major axes of the elliptical shapes are arranged in different directions.

[0697] That is, in this embodiment, the elliptical-shaped openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 have the same eccentricity but different major axis directions.

[0698] In such an embodiment, Fig.25As shown in FIG. 1 , the major axis directions of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are arranged in various ways, so that it is possible to prevent external light from forming a constant diffraction pattern and thereby prevent degradation of display quality.

[0699] In an embodiment, oval shapes of the same color may be formed to have different areas and eccentricities.

[0700] That is, in this embodiment, Fig.25 Differently, the two green openings OPg of the pixel defining layer 380 have different areas or eccentricities, and the two green second openings OPBMg of the light blocking layer 220 also have different areas or eccentricities, and the two green openings OPSLg of the scattering layer 210 can also be formed into elliptical shapes with different eccentricities.

[0701] In such an embodiment, two long axes of the green openings OPSLg of the scattering layer 210 may have the same direction or may be arranged in different directions.

[0702] Since this embodiment has Fig.25 The elliptical shape change of the embodiment is large, so that external light may not form a constant diffraction pattern, and degradation of display quality can be prevented.

[0703] In an embodiment, at least one of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be as follows: Fig.10 In another embodiment, only some of the openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 may be omitted, and the others may have a structure including the openings (see Fig.21 ).

[0704] Here, the eccentricity of the opening of the elliptical shape may have a value greater than 0 and less than 1, the angles formed by the respective major axes have four or more angles, and the angles formed by the major axes are arranged at regular angular intervals of 45 degrees or less.

[0705] In an embodiment, the angles formed by the major axes of the elliptical shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0706] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0707] In such an embodiment, the maximum horizontal spacing between the openings may be greater than about 4.5 μm and less than about 10 μm.

[0708] In an embodiment, Fig.24 As shown in FIG. 1 , the elliptical shapes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are shown to have the same major axis direction, but may be formed in different major axis directions.

[0709] exist Fig.25 In an embodiment of the present invention, a total of four pixels including a red opening, a green opening, and a blue opening are included in one unit pixel. In this embodiment, two green openings are included, and one red opening and one blue opening are included.

[0710] However, the color of two pixels having the same color may be red or blue, and the positions of the openings corresponding to the four pixels may be different from Fig.25 The positions shown in are arranged differently.

[0711] In an embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0712] In the following we will refer to Fig.26 An embodiment in which the long axis direction of the opening OPSL of the scattering layer 210 has a specific angle with the long axis direction of the opening OP of the pixel defining layer 380 and / or the long axis direction of the second opening OPBM of the light blocking layer 220 is described.

[0713] Fig.26 An embodiment is shown in which the opening OPSL of the scattering layer 210 does not contact the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380. In a plan view, a portion of the opening OPSL of the scattering layer 210 overlaps with the opening OP of the pixel defining layer 380, and the remaining portion of the opening OPSL of the scattering layer 210 does not overlap with the opening OP of the pixel defining layer 380.

[0714] As a result, in such an embodiment, a structure is formed in which a portion (shaded portion) of the scattering layer 210 exposed by the second opening OPBM of the light blocking layer 220 overlaps only a portion of the opening OP of the pixel defining layer 380 in a plan view.

[0715] In an embodiment, a portion (a shaded portion) of the scattering layer 210 exposed by the second openings OPBM of the light blocking layer 220 only overlaps with the second openings OPBM of the light blocking layer 220 in a plan view.

[0716] Despite Fig.26 Only one embodiment is shown in FIG. 2 , but this embodiment may be modified by changing the angle of the opening OPSL of the scattering layer 210 , and other various modifications described above may be applied to this embodiment.

[0717] We will now describe in more detail Fig.26 A modified embodiment of .

[0718] A portion of the opening OPSL of the scattering layer 210 may be formed outside the second opening OPBM of the light blocking layer 220 , and the opening OPSL of the scattering layer 210 may also be formed only within the opening OP of the pixel defining layer 380 .

[0719] The elliptical shapes of the same color have the same size and eccentricity, and the major axis directions of the elliptical shapes may be arranged differently.

[0720] That is, the openings OPSL of the same color of the plurality of scattering layers 210 have the same area or eccentricity, but the major axes of the elliptical shapes are arranged in different directions.

[0721] In an embodiment, oval shapes of the same color may be formed to have different sizes and eccentricities, and the major axis directions may be arranged identically or in various ways.

[0722] In an embodiment, at least one of the openings OPSL of the scattering layer 210 may be as follows: Fig.10 In another embodiment, some of the openings OPSL of the same color of the scattering layer 210 may be omitted, and others may have a structure including openings (see Fig.21 ).

[0723] exist Fig.26 , the elliptical shapes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are shown to have the same major axis direction, but may be formed in different major axis directions.

[0724] Here, the eccentricity of the opening of the elliptical shape may have a value greater than 0 and less than 1, the angles formed by the respective major axes may have four or more angles, and the angles formed by the major axes may be arranged at regular angle intervals of 45 degrees or less.

[0725] In an embodiment, the angles formed by the major axes of the elliptical shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0726] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0727] In such an embodiment, the maximum horizontal spacing between the openings may be greater than about 4.5 μm and less than about 10 μm.

[0728] In the following we will refer to Fig. 27 and Fig.28 An embodiment is described in which the planar shapes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are formed in an elliptical shape, and the opening OPSL of the scattering layer 210 is formed in a circular shape.

[0729] Fig. 27 Various embodiments are shown in which the openings OP of the pixel defining layer 380 and the second openings OPBM of the light blocking layer 220 have an elliptical planar shape, and the openings OPSL of the scattering layer 210 have a circular planar shape.

[0730] exist Fig. 27 , the elliptical shapes of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are shown to have the same major axis direction, but may be formed in different major axis directions.

[0731] Fig. 27 (A) shows an embodiment in which the opening OPSL of the scattering layer 210 is formed smaller than the opening OP of the pixel defining layer 380 and the opening OPSL of the scattering layer 210 is located within the opening OP of the pixel defining layer 380 in a plan view.

[0732] Fig. 27 (B) is Fig. 27 2 is a modified example of (A), and shows an embodiment in which the opening OPSL of the scattering layer 210 is inscribed with the opening OP of the pixel defining layer 380.

[0733] Fig. 27 (C) shows an embodiment in which the opening OPSL of the scattering layer 210 is formed to be larger than the opening OP of the pixel defining layer 380, and in addition, a portion of the opening OPSL of the scattering layer 210 is located outside the second opening OPBM of the light blocking layer 220 in a plan view and has a structure shielded by the light blocking layer 220 (see the dotted line).

[0734] In an embodiment, the openings OPSL of the scattering layer 210 may have a structure tangent to the second openings OPBM of the light blocking layer 220 .

[0735] Fig.28 It shows the arrangement Fig. 27 (B) is an embodiment of a unit pixel of the embodiment. In this embodiment, circular shapes and elliptical shapes of different colors have different sizes and / or eccentricities, and elliptical shapes of the same color have different sizes and / or eccentricities and have different major axis directions.

[0736] exist Fig.28, the scattering layer 210 exposed by the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 is represented by hatching, and in addition, the red, green and blue light emitting layers exposed by the openings OPr, OPg, OPb of the pixel defining layer 380 are also represented by separate hatching.

[0737] As a result, Fig.28 In the embodiment of FIG. 2 , a portion of the light emitting layer of each color has a structure overlapping with the scattering layer 210 in a plan view.

[0738] exist Fig.28 In the embodiment, the circular shape and the elliptical shape of the same color have the same size and eccentricity, and the major axis directions of the elliptical shapes are arranged differently.

[0739] In such an embodiment, Fig.28 As shown in FIG. 1 , two green openings OPg of the pixel defining layer 380 are shown, and the two green openings OPg of the pixel defining layer 380 have the same area or eccentricity but are formed in different long-axis directions.

[0740] In addition, the two green second openings OPBMg of the light blocking layer 220 have the same area or eccentricity, but are formed in different major axis directions.

[0741] In an embodiment, the two green openings OPSLg of the scattering layer 210 have the same area or radius.

[0742] In other words, an example is shown in which the elliptical-shaped openings OPr, OPg, OPb of the same color of the pixel defining layer 380 have the same eccentricity, and the elliptical-shaped second openings OPBMr, OPBMg, OPBMb of the same color of the light blocking layer 220 have the same eccentricity, but the long axis directions are different from each other.

[0743] In such an embodiment, Fig.28 As shown in , the arrangement of the long-axis direction is formed in various ways, so that it is possible to prevent external light from forming a constant diffraction pattern and thereby prevent degradation of display quality.

[0744] In another embodiment, even a circular shape and an elliptical shape of the same color may be formed to have different sizes and eccentricities.

[0745] In an embodiment, Fig.28Differently, the two green openings OPg of the pixel defining layer 380 are formed as ellipses having different areas or eccentricities, and the two green second openings OPBMg of the light blocking layer 220 can be formed as ellipses having different areas or eccentricities, and the two green openings OPSLg of the scattering layer 210 can also be formed as circular shapes having different areas or radii.

[0746] In such an embodiment, the major axes of the two elliptical shapes may have the same direction or may be arranged in different directions.

[0747] Since this embodiment has Fig.28 The elliptical shape variation of the embodiment is large, so the external light may not form a constant diffraction pattern, and the degradation of display quality can be effectively prevented.

[0748] In an embodiment, at least one of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be as follows: Fig.10 In another embodiment, only some of the openings OPSLr, OPSLg, OPSLb of the same color of the scattering layer 210 may be omitted, and the others may have a structure including the openings (see Fig.21 ).

[0749] Here, the eccentricity of the elliptical shape may have a value greater than 0 and less than 1, the angles formed by the respective major axes may have four or more angles, and the angles formed by the major axes may be arranged at regular angular intervals of 45 degrees or less.

[0750] In an embodiment, the angles formed by the major axes of the elliptical shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0751] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0752] In such an embodiment, the maximum horizontal spacing between the openings may be greater than about 4.5 μm and less than about 10 μm.

[0753] exist Fig.28 In an embodiment of the present invention, a total of four pixels including a red opening, a green opening, and a blue opening are included in one unit pixel. In this embodiment, two green openings are included, and one red opening and one blue opening are included.

[0754] In another embodiment, the color of two pixels having the same color may be red or blue, and the positions of the openings corresponding to the four pixels may be the same as Fig.28 The positions are arranged differently.

[0755] In an embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0756] References Figures 15 to 28 The structures of various embodiments are described.

[0757] In the following we will refer to Figure 29 to Figure 32 The change or modification of the eccentricity or major axis direction of the elliptical shape is described in more detail.

[0758] Figure 29 to Figure 32 is a plan view of a portion of a display panel according to various modified embodiments.

[0759] First, we will describe Fig.28 and Figure 29 to Figure 31 Various modified structures of the embodiments.

[0760] Will pass Figure 29 to Figure 31 An embodiment in which the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the opening of the pixel defining layer 380 are each formed in an elliptical shape and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed in a circular shape is described based on the structure of the light emitting display panel DP formed in the display area DA.

[0761] exist Figure 29 to Figure 31 In Fig. 27 (B) and Fig.28 As shown in FIG. 1 , the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are located in the openings OPr, OPg, OPb of the pixel defining layer 380 .

[0762] Figure 29 to Figure 31 Each shows a different embodiment. Specifically, Fig.29 An embodiment is shown in which the elliptical shapes are arranged at various angles, Fig.30 An embodiment is shown in which an elliptical shape is formed at various eccentricities, and Fig.31 Embodiments are shown in which the elliptical shape is formed at various angles and at various eccentricities.

[0763] First, refer to Fig.29 The planar structures of the openings OPr, OPg, OPb of the pixel defining layer 380, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are described in detail.

[0764] In an embodiment, Fig.29As shown in the figure, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed in a circular shape and are located in the corresponding openings OPr, OPg, OPb of the pixel defining layer 380. The openings OPr, OPg, OPb of the pixel defining layer 380 having an elliptical shape and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 in the embodiment will now be described.

[0765] In an embodiment, Fig.29 As shown in FIG. 1 , the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 each have an elliptical planar shape with the same eccentricity.

[0766] That is, the red openings OPr, the green openings OPg, and the blue openings OPb of the pixel defining layer 380 may all be ellipses having the same eccentricity.

[0767] In such an embodiment, the red second openings OPBMr, the green second openings OPBMg, and the blue second openings OPBMb of the light blocking layer 220 may all be ellipses having the same eccentricity.

[0768] Here, the eccentricities of the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have a value greater than 0 and less than 1.

[0769] The openings OPr, OPg, OPb of the pixel defining layer 380 correspond to the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 .

[0770] That is, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 corresponding to each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 are located within the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 in a plan view.

[0771] The second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210, and the openings OPr, OPg, OPb of the pixel defining layer 380 correspond to each other and may at least partially overlap each other in a plan view.

[0772] In an embodiment, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may have a specific horizontal spacing therebetween, and two corresponding openings among the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may be formed at the same angle in the same major axis direction of the elliptical shape.

[0773] Here, the horizontal spacing between the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 can be about 4.5 μm or more and about 10 μm or less, and the horizontal spacing can change depending on the thickness of the layer (for example, the encapsulation layer) located between the two in the cross section, and the encapsulation layer can have a thickness of about 6 μm.

[0774] In an embodiment, the long axis directions of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may not be constant due to process errors, etc., for example, they may be arranged at an angle interval of more than 0 degrees and less than 10 degrees.

[0775] exist Fig.29 In the embodiment, the angles formed by the respective long axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 may have four or more angles, and further, the angles formed by the long axes may be arranged at angular intervals of less than 45 degrees.

[0776] In such an embodiment, as described above, the angles formed by the long axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be arranged at equal angular intervals of less than 45 degrees.

[0777] However, in another embodiment, the angles formed by the major axes of the respective openings may be arranged at irregular angle intervals of less than 45 degrees.

[0778] The embodiments in which the major axes of the openings are arranged at such irregular angular intervals may be intentionally arranged to reduce the diffraction pattern, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0779] In such an embodiment, the maximum horizontal spacing between the openings may be greater than about 4.5 μm and less than about 10 μm.

[0780] If the multiple openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have four or more openings or are arranged at angular intervals of less than 45 degrees, less external light color separation will occur, or a constant diffraction pattern or color separation will be produced regardless of the angle, making it difficult for the user to see the diffraction pattern.

[0781] We will now describe in detail Fig.30 Embodiment of the invention.

[0782] In an embodiment, Fig.30 As shown in the figure, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 are formed into elliptical shapes having two or more different eccentricities, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed into circular shapes and are respectively located in the corresponding openings OPr, OPg and OPb of the pixel defining layer 380.

[0783] In an embodiment, the oval-shaped openings of the same color may be formed in an oval shape having two or more eccentricities.

[0784] Here, the eccentricity of the elliptical shape may be greater than 0 and less than 1.

[0785] In an embodiment, Fig.30 As shown in FIG, the major axis direction of the ellipse has only two directions forming 45 degrees with respect to the first direction DR1 or the second direction DR2, but in other embodiments, the major axis direction of the ellipse may have various directions.

[0786] exist Fig.30 3A and 3B further illustrate the openings OPr, OPg, OPb of the pixel defining layer 380 , the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 , and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 .

[0787] In an embodiment, Fig.30 As shown in the figure, the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have an elliptical plane shape, and the major axis direction of the ellipse is only arranged in two directions forming 45 degrees relative to the first direction DR1 or the second direction DR2.

[0788] The openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed in a circular shape and are tangent to the corresponding openings OPr, OPg, OPb of the pixel defining layer 380, respectively.

[0789] In an embodiment, each of the red opening OPr, the green opening OPg, and the blue opening OPb of the pixel defining layer 380 may be formed as an ellipse having at least two different eccentricities.

[0790] In addition, the red second openings OPBMr, the green second openings OPBMg, and the blue second openings OPBMb of the light blocking layer 220 may each be formed as an ellipse having at least two different eccentricities.

[0791] In addition, Fig.30 In the embodiment of the present invention, the openings OPr, OPg, OPb of the same color of the pixel defining layer 380 may have an elliptical plane shape with at least two different eccentricities. The second openings OPBMr, OPBMg, OPBMb of the same color of the light blocking layer 220 may also have an elliptical plane shape with at least two different eccentricities.

[0792] One opening OPr, OPg, OPb of the pixel defining layer 380 corresponds to one second opening OPBMr, OPBMg, OPBMb of the light blocking layer 220 and one opening OPSLr, OPSLg, OPSLb of the scattering layer 210 .

[0793] That is, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 corresponding to each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 are located within the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220.

[0794] The second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, the corresponding openings OPSLr, OPSLg, OPSLb of the scattering layer 210, and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may overlap with each other in a plan view.

[0795] In an embodiment, the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 having an elliptical shape may have a constant horizontal interval, and major axis directions of the ellipses may be formed at the same angle to each other.

[0796] Here, the horizontal spacing between the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 can be about 4.5 μm or more and about 10 μm or less, and the horizontal spacing can change depending on the thickness of the layer (e.g., the encapsulation layer) located between the two in the cross section.

[0797] In an embodiment, the long axis directions of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 are the same, or form an angle of more than 0 degrees and less than 10 degrees due to process errors, etc.

[0798] exist Fig.30 In the embodiment, two or more elliptical shapes, which are openings of the same color but have different eccentricities, may be arranged at various positions in various proportions.

[0799] In an embodiment, the same number of elliptical shapes having different eccentricities may be included in the display area, and in another embodiment, the elliptical shapes having different eccentricities may be included in different numbers.

[0800] In an embodiment in which, for example, the red openings OPr of the pixel defining layer 380 are formed in two elliptical shapes having different eccentricities, the corresponding red second openings OPBMr of the light blocking layer 220 may also have different eccentricities.

[0801] However, in another embodiment, the red second openings OPBMr of the light blocking layer 220 may be formed with the same eccentricity.

[0802] refer to Fig.30 , an angle formed by each long axis of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 relative to the first direction DR1 or the second direction DR2 is 45 degrees.

[0803] In embodiments where the eccentricity of the ellipse is formed in various ways, Fig.29 Differently, the number of angles formed by the major axes of the ellipse can be less than 4.

[0804] In other words, Fig.30 Embodiments have various elliptical shapes with different eccentricities formed to reduce external light color separation, or to produce a constant diffraction pattern or color separation regardless of angle.

[0805] therefore, Fig.30 The embodiments can be used with Fig.28 Embodiments in which the major axis direction of the ellipse is varied provide different ways to achieve constant color separation and / or a constant diffraction pattern.

[0806] On the other hand, Fig.30In the embodiment, the number of long axis directions of the ellipse is small, and thus the reflected diffraction pattern may have directionality, so the directionality of the diffraction pattern can be reduced by forming one of the multiple openings OPr, OPg, OPb of the pixel defining layer 380 and the multiple second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 into a circular shape or by increasing the number of long axis directions of the elliptical shape.

[0807] We will now describe Fig.31 Embodiment of the invention. Fig.31 The embodiment combines Fig.29 Examples and Fig.30 Embodiment of the invention.

[0808] In an embodiment, Fig.31 As shown in , even for the same color, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are formed into elliptical shapes with different eccentricities and the openings OPr, OPg, OPb of the pixel defining layer 380 are also formed into elliptical shapes with different eccentricities, and the angles formed by the long axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have more than four angles, and the angles formed by the long axes are arranged at angular intervals of less than 45 degrees.

[0809] Here, the eccentricity of the elliptical shape may be greater than 0 and less than 1.

[0810] Here, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 are formed in a circular shape and are tangent to the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 .

[0811] Fig.31 Examples include Fig.29 Examples and Fig.30 All the features of the embodiments are such that the multiple openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have four or more openings, or are arranged at angular intervals of less than 45 degrees, and in addition, by forming various eccentricities of ellipses, the color separation of external light is minimized, or a constant diffraction pattern or color separation is ensured regardless of the angle.

[0812] In an embodiment, long axis directions of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are formed at equal angle intervals or at irregular angle intervals.

[0813] Figure 29 to Figure 31A rough comparison of the embodiments can be shown in Table 1 below.

[0814]

Table 1

[0815]

[0816]

[0817] In an embodiment, the diffraction pattern may be further improved by randomly arranging the directions of the major axes of the elliptical shapes.

[0818] The following will describe Fig.31 Modification of the embodiment Fig.32 The structure of the embodiment.

[0819] Fig.32 Yes Fig. 9 Examples and Fig.31 and wherein the eccentricity and the major axis direction of the elliptical shape are from Fig. 9 Various modifications of the embodiments are made to the embodiments.

[0820] exist Fig.32 In the embodiment, the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are formed in a circular shape, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 have an elliptical shape.

[0821] Here, the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 have a structure in which they are located at the periphery with respect to the openings OPr, OPg, OPb of the pixel defining layer 380 .

[0822] The openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are formed in circular shapes, so the following description focuses on the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 having an elliptical shape.

[0823] exist Fig.32 In the embodiment, Fig. 9 Examples and Fig.31 The embodiments are combined, so that the openings OPSLr, OPSLg, OPSLb having an elliptical shape of the scattering layer 210 are formed with different eccentricities even for the same color, and the angles formed by the major axes of the elliptical shape have four or more angles, or the angles formed by the major axes are arranged at angular intervals of less than 45 degrees.

[0824] Here, the eccentricity of the elliptical shape may be greater than 0 and less than 1.

[0825] exist Fig.32 In the embodiment of Fig.31 As in the embodiments, the elliptical shape has four or more major axis directions, or is arranged at angular intervals of 45 degrees or less, and the eccentricity of the elliptical shape is additionally formed in various ways to separate the colors of external light to ensure that a small amount of diffraction is generated or a constant diffraction pattern or color separation is generated regardless of the angle.

[0826] In an embodiment, the major axis directions of the elliptical shapes may be formed at equal angular intervals or at irregular angular intervals.

[0827] In addition, a maximum horizontal interval between the openings may be about 4.5 μm or more and about 10 μm or less.

[0828] also, Fig.32 The embodiment may have the same characteristics as in Table 1 above, or the major axis directions of the elliptical shapes may be randomly arranged.

[0829] In the following we will refer to Fig.33 and Fig.34 Describes the characteristics of the elliptical shape according to the direction of the major axis.

[0830] First, through Fig.33 Describes the relationship between the angle of the major axis of the ellipse and the direction of the diffraction pattern of reflected light.

[0831] Fig.33 : is a diagram showing the angle-dependent reflection characteristics of a light-emitting display device.

[0832] exist Fig.33 , a structure in which the openings of the pixel defining layer 380, the openings of the scattering layer 210, and the openings of the light blocking layer 220 are arranged in the same direction is shown on the left, and a diffraction pattern of reflected light is correspondingly shown on the right.

[0833] refer to Fig.33 , the opening of the pixel defining layer 380 and the opening of the light blocking layer 220 are formed in a circular shape, but when the opening of the scattering layer 210 has an elliptical shape, the diffraction pattern of the reflected light is also formed in an elliptical shape. However, it can be confirmed that the major axis direction may be different.

[0834] That is, the major axis direction of the elliptical shape and the major axis direction of the elliptical pattern of the diffraction pattern of reflected light may be perpendicular to each other.

[0835] Fig.33 Shown in Fig.33 The diffraction patterns (A), (B) and (C) on the right side can be combined to form the following Fig.33 The circular diffraction pattern shown in (D) shows that it is possible to have a diffraction pattern that is independent of angle.

[0836] The following will refer to Fig.34 Describe the various angles of the major axis of an elliptical shape.

[0837] Fig.34 are diagrams showing various angle arrangements according to an embodiment.

[0838] Fig.34 Shown are the directions of the major axes of a set of ellipses that can be formed in a display area.

[0839] Fig.34 The elliptical shape shown in FIG. 3 may correspond to the opening OP of the pixel defining layer 380 , the second opening OPBM of the light blocking layer 220 , and / or the opening OPSL of the scattering layer 210 .

[0840] Fig.34 (A) shows an example in which the opening of the elliptical shape has two major axis directions and the two major axis directions are arranged at an angle of 90 degrees.

[0841] Fig.34 (B) shows an example in which the opening of the elliptical shape has four major axis directions and the four major axis directions are arranged at angular intervals of 45 degrees.

[0842] Fig.34 (C) shows an example in which the opening of the elliptical shape has nine major axis directions and the nine major axis directions are arranged at angular intervals of 20 degrees.

[0843] Apart from Fig.34 In addition to the major axis directions shown in , various angles can be formed with various long axis orientations spaced apart, which may include four or more long axis angles, because a smaller number of long axis directions will result in an angle-dependent diffraction pattern.

[0844] The embodiment in which the elliptical shape has an elliptical shape having a single eccentricity is described above.

[0845] However, in another embodiment, an elliptical shaped opening may be formed by merging at least two elliptical shapes having different eccentricities, which will be referred to as Fig.35 and Fig.36 Describe in detail.

[0846] Fig.35 and Fig.36 This is a diagram showing a structure in which ellipses having different eccentricities are combined.

[0847] First, refer to Fig.35Describes the oval shape of an ellipse and the arrangement of the openings based thereon.

[0848] exist Fig.35 An example of merging two or more elliptical shapes with different eccentricities is shown in FIG.

[0849] exist Fig.35 (A) and Fig.35 Ellipses with different eccentricities are depicted in (B) and Fig.35 (C) and Fig.35 (D) depicts ovals or ellipses formed by combining two ellipses with different eccentricities in different ways.

[0850] exist Fig.35 (A) shows an ellipse with an eccentricity of 0.8, and Fig.35 (B) shows an ellipse with an eccentricity of 0.6.

[0851] The ellipse obtained by merging these two ellipses can have a shape similar to Fig.35 (C) or Fig.35 The shape of (D).

[0852] exist Fig.35 (C) and Fig.35 In (D), a dotted line is shown within the merged oval shape, and the ovals on two opposite sides of the dotted line are parts of ellipses with different eccentricities.

[0853] That is to say, Fig.35 (C) is to cut along the second direction DR2 Fig.35 (A) and Fig.35 An example of a combination of ellipses (B), and Fig.35 (D) is to cut along the first direction DR1 Fig.35 (A) and Fig.35 An example of a combination of ellipses in (B).

[0854] The method of combining two ellipses having different eccentricities is not limited thereto, and the combination may be performed in various ways.

[0855] Fig.36 The figure shows the Fig.35 An embodiment in which an oval shape combined in the same manner as in (C) is used as the opening OPSL of the scattering layer 210, and the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are formed in a circular shape.

[0856] Fig.36The embodiment shows only one unit pixel, and the one unit pixel includes one red opening OPr, OPSLr, OPBMr, one blue opening OPb, OPSLb, OPBMb, and two green openings OPg, OPSLg, OPBMg.

[0857] exist Fig.36 In the embodiment, the long axis directions of the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may be different from each other, and the openings OPSLr, OPSLg, OPSLb of the scattering layer 210 may have a structure of contacting the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220.

[0858] In such Fig.36 In the embodiment using two ellipses having different eccentricities as in , the angles formed by the major axes may have four or more angles, and the angles formed by the major axes may also be arranged at angular intervals of less than 45 degrees.

[0859] In an embodiment, the angles formed by the major axes of the oval shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0860] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0861] In an embodiment, a maximum horizontal spacing between the openings may be about 4.5 μm or more and about 10 μm or less.

[0862] In an embodiment, the eccentricity of the two ellipses used for merging may be changed, and thus the size of the merged ellipse may also be changed.

[0863] In an embodiment, for each color, two ovals having different eccentricities may be combined, and even for the same color, two ovals having different eccentricities may be combined to form various ovals.

[0864] In an embodiment, Fig.36 As shown in , a total of four pixels including a red opening, a green opening, and a blue opening may be included in one unit pixel. In this case, two green openings are included, and one red opening and one blue opening are included.

[0865] However, the colors of two pixels having the same color in the unit pixel may be red or blue, and the positions of the openings corresponding to the four pixels may be different from each other. Fig.36 The positions are arranged differently.

[0866] In an embodiment, the unit pixel may be formed as a unit pixel including only one red opening, one green opening, and one blue opening.

[0867] In the following we will refer to Fig.37 and Fig.38 Description has Figure 7 Embodiments of cross-sectional structures with different cross-sectional structures.

[0868] Fig.37 and Fig.38 is a schematic cross-sectional view of a display panel according to another embodiment.

[0869] First, in addition to Fig.37 The embodiment does not include the sensing insulating layers 501, 510, 511 and the plurality of sensing electrodes 540, 541 formed for touch detection between the encapsulation layer 400 and the scattering layer 210. Fig.37 Examples and Figure 7 The embodiments are basically the same.

[0870] As a result, in this embodiment, the scattering layer 210, the light blocking layer 220 and the color filters 230R, 230G, 230B are located on the encapsulation layer 400, the second inorganic encapsulation layer 403 contacts the scattering layer 210, and the structure of the upper part of the scattering layer 210 and the structure of the lower part of the encapsulation layer 400 can be connected. Figure 7 The same as those in .

[0871] In an embodiment, a concave portion OPSL-c may be formed to replace the opening OPSL in the scattering layer 210, and its cross-sectional structure is Fig.38 Shown in.

[0872] Fig.38 yes Figure 7 A modified embodiment in which a concave portion OPSL-c of the scattering layer 210 is formed instead of the opening OPSL of the scattering layer 210.

[0873] Except for the concave portion OPSL-c of the scattering layer 210, Fig.38 Can be used with Figure 7 Have the same structure.

[0874] refer to Fig.38 , the concave portion OPSL-c of the scattering layer 210 is thinner than the scattering layer 210 at other positions, and Fig.38 In the embodiment of FIG. 1 , the scattering layer 210 has a structure in which the thickness gradually decreases.

[0875] In an embodiment, the upper surface of the scattering layer 210 located in the concave portion OPSL-c of the scattering layer 210 may have a cross-sectional structure in which a height difference thereof rapidly changes depending on a position.

[0876] In an embodiment, the thickness of the scattering layer 210 changes rapidly at the boundary of the concave portion OPSL-c of the scattering layer 210 , and the thickness of the scattering layer 210 may not change or may change slowly at the central portion of the concave portion OPSL-c of the scattering layer 210 .

[0877] On the other hand, the planar structure of the concave portion OPSL-c of the scattering layer 210 may have a structure in which two or more ellipses are combined, like the opening OPSL of the scattering layer 210 described above. Fig.35 or Fig.36 as shown in .

[0878] Specifically, the planar shapes of the concave portion OPSL-c of the scattering layer 210, the opening of the pixel defining layer 380, and the second opening of the light blocking layer 220 may correspond to Figure 8 , Fig. 9 , Fig.11 , Figures 15 to 28 , Figure 29 to Figure 32 as well as Fig.36 , and may be formed as modified embodiments thereof.

[0879] Therefore, the embodiment including the concave portion OPSL-c of the scattering layer 210 may also include the following features like the opening OPSL of the scattering layer 210 .

[0880] In the embodiment including the concave portion OPSL-c of the scattering layer 210, the circular shape and the oval shape of the same color have the same size and eccentricity, and the major axis directions of the oval shapes may be differently arranged.

[0881] In the embodiment, oval shapes having the same eccentricity are formed, but the major axis directions of the oval shapes may be arranged in different directions.

[0882] In an embodiment, a circular shape and an oval shape of the same color may be formed to have different sizes and eccentricities.

[0883] In an embodiment, at least one of the different colored concave portions OPSL-c of the scattering layer 210 may be as follows: Fig.10 In another embodiment, only some of the concave portions OPSL-c of the same color of the scattering layer 210 are omitted, and the others may have a structure including the concave portions (see Fig.21 ).

[0884] Here, the eccentricity of the oval-shaped concave portion may have a value greater than 0 and less than 1, and the angles formed by each major axis have four or more angles, and the angles formed by the major axes are arranged at regular angular intervals of 45 degrees or less.

[0885] In an embodiment, the angles formed by the major axes of the oval shapes may be arranged at irregular angle intervals of 45 degrees or less.

[0886] Embodiments in which the major axes are arranged at such irregular angular intervals may be intentionally arranged randomly to reduce diffraction patterns, or may be arranged at irregular angular intervals of more than 0 degrees and less than 10 degrees due to process errors.

[0887] In addition, a maximum horizontal interval between the openings or between the openings and the recesses may be about 4.5 μm or more and about 10 μm or less.

[0888] and Fig.10 and Fig.12 Similar to Comparative Example 1, the light-emitting display device including the concave portion OPSL-c of the scattering layer 210 has the scattering layer 210 on the entire surface of the light-emitting layer EML.

[0889] However, the scattering layer 210 located in front of the light emitting layer EML has a thin thickness, and thus the front efficiency is less reduced than that of Comparative Example 1, and thus the front brightness can be improved compared to Comparative Example 1.

[0890] In such an embodiment, due to the concave portion OPSL-c of the scattering layer 210, the display quality can be improved due to a weaker diffraction pattern compared to Comparative Example 0.

[0891] In this embodiment, the planar shape of the recess OPSL-c of the scattering layer 210, the opening of the pixel defining layer 380 and / or the second opening of the light blocking layer 220 is elliptical, and by diversifying the eccentricity or major axis direction of the ellipse, the diffraction pattern may be non-directional, making it difficult for a user to identify the diffraction pattern.

[0892] The concave portion OPSL-c of the scattering layer 210 may be formed by adjusting the thickness of the scattering layer 210 using a half-tone mask on a photosensitive transparent organic material.

[0893] The cross-sectional structure of the concave portion OPSL-c of the scattering layer 210 may be changed by adjusting the degree of light transmission through the half-tone mask.

[0894] In the following we will refer to Fig.39 The planar structure of the color filters 230R, 230G, 230B according to the embodiment is described in detail.

[0895] Fig.39is a plan view of a display area including a color filter according to an embodiment.

[0896] Fig.39 The planar structure of the color filters 230R, 230G, and 230B is added to more clearly illustrate the Fig. 9 FIG. 1 is a diagram of an embodiment of the present invention.

[0897] Reference is the cross-sectional view Figure 7 , adjacent color filters 230R, 230G, 230B have a structure in which they overlap each other on the light blocking layer 220 .

[0898] The planar structure of the overlapping area may be changed, and one of the planar structures in the embodiment may have a diamond shape, such as Fig.39 as shown in .

[0899] Specifically, each of the color filters 230R, 230G, 230B has a diamond shape covering the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 , the corresponding openings OPSLr, OPSLg, OPSLb of the scattering layer 210 , and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 .

[0900] refer to Fig.39 , the color filters 230R, 230G, 230B are each shown in different shades, and the boundary between adjacent color filters 230R, 230G, 230B is shown as a single line.

[0901] However, if Figure 7 As shown in FIG. 1 , in fact, some areas of adjacent color filters 230R, 230G, and 230B may overlap with each other, and the overlapping portion is located at Fig.39 At the boundary line of the color filters 230R, 230G, and 230B.

[0902] In an embodiment, a light blocking region of a color filter in which at least two color filters 230R, 230G, 230B overlap may be formed instead of the light blocking layer 220 .

[0903] In the following we will refer to Figures 40 to 44 An embodiment is described that does not include a light blocking layer but includes a light blocking region of a color filter in which at least two color filters 230R, 230G, 230B overlap each other.

[0904] First, refer to Fig.40 and Fig.41 describe Figure 7 The modified structure.

[0905] Fig.40 and Fig.41is a schematic cross-sectional view of a display panel according to another embodiment.

[0906] In the following we will first refer to Fig.40 The structure of the light emitting display panel DP according to the embodiment will be described, and the description of Figure 7 The same section as in the description.

[0907] according to Fig.40 The light-emitting display panel DP of the embodiment can display images by forming light-emitting diodes on the substrate 110, and can detect touch by including a plurality of sensing electrodes 540 and 541, and also by including color filters 230R, 230G, 230B so that light emitted from the light-emitting diodes has color characteristics of the color filters 230R, 230G, 230B.

[0908] In an embodiment, a black light blocking layer that blocks visible light may not be formed, but instead of the light blocking layer, at least two color filters may be overlapped to block visible light.

[0909] The region where visible light is blocked by overlapping at least two color filters is called a light blocking region and is Fig.40 In the embodiment of FIG. 1 , the blue color filter 230B, the red color filter 230R, and the green color filter 230G are sequentially stacked.

[0910] In embodiments, the order of the color filter stacks may be changed.

[0911] In addition, according to Fig.40 In an embodiment, a polarizer is not formed on the front surface of the light-emitting display panel DP, but instead, a pixel defining layer 380 is formed of a black organic material, forming a light-blocking area in which at least two color filters overlap at an upper portion of the pixel defining layer 380, so that even if external light enters the interior, the external light is prevented from being reflected from the anode and the like and transmitted to the user.

[0912] Specifically, the color filters 230R, 230G, and 230B are located on the third sensing insulation layer 511 .

[0913] The color filters 230R, 230G, and 230B include a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light.

[0914] Each of the color filters 230R, 230G, 230B may be positioned to overlap an anode electrode of a light emitting diode in a plan view.

[0915] Since light emitted from the light emitting layer EML may be changed into corresponding colors when it passes through the color filter, all lights emitted from the light emitting layer EML may have the same color.

[0916] In another embodiment, the light emitting layer EML may emit light of different colors, and the displayed colors can be enhanced by passing through color filters of corresponding colors.

[0917] In an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0918] The color conversion layer may include quantum dots.

[0919] exist Fig.40 In an embodiment of the present invention, a light-blocking layer that is black and blocks visible light is not formed, but a light-blocking region formed by overlapping at least two color filters is formed instead of the light-blocking layer.

[0920] exist Fig.40 In the embodiment of FIG. 5 , the light blocking region includes a blue color filter 230B, a red color filter 230R, and a green color filter 230G which are sequentially stacked.

[0921] In embodiments, the order of the color filter stacks may be changed.

[0922] The light-blocking region in which at least two color filters overlap may be positioned to overlap with the sensing electrodes 540 and 541 in a plan view, and may be positioned not to overlap with the anode electrode in a plan view.

[0923] Accordingly, the anode electrode and the light emitting layer EML capable of displaying an image may not be shielded by the light blocking region and the sensing electrodes 540 and 541 .

[0924] refer to Fig.40 , the light-blocking area of ​​the color filters in which the three color filters overlap is located only in the area overlapping with the pixel defining layer 380 in a plan view, and one side of the light-blocking area of ​​the color filters is arranged to be indented inward from the corresponding side of the pixel defining layer 380.

[0925] Only one color filter may be located in an area other than the light-blocking area, and light of the color of the corresponding color filter is transmitted to form a light-transmitting area of ​​the color filter.

[0926] Hereinafter, a light-transmitting region of a color filter in which only one color filter is located is also referred to as a second opening OPCF of a light-blocking region because light is transmitted therethrough.

[0927] The second opening OPCF of the light-blocking area is an opening located in the light-blocking area in which at least two color filters overlap, and may correspond to a region in which only one color filter is located.

[0928] In an embodiment, the second openings OPCF of the light blocking region of the color filter may correspond to the second openings OPBM of the light blocking layer 220 described above.

[0929] As a result, in a plan view, the second opening OPCF of the light blocking region of the color filter may have a circular shape or an elliptical shape, or may have a shape such as Fig.35 An oval shape formed by merging two or more elliptical shapes with different eccentricities as shown in FIG.

[0930] The area of ​​the second opening OPCF of the light blocking region is formed to be larger than the area of ​​the opening OP of the pixel defining layer 380 , and the opening OP of the pixel defining layer 380 overlaps with the second opening OPCF of the light blocking region in a plan view.

[0931] In an embodiment, the opening OPSL of the scattering layer 210 may be located within the second opening OPCF of the light blocking region, and in another embodiment, a portion of the opening OPSL of the scattering layer 210 may be located outside the second opening OPCF and thus may be located in the light blocking region.

[0932] In addition, in a plan view, the opening OPSL of the scattering layer 210 may be located inside or outside the opening OP of the pixel defining layer 380, so that the opening OPSL of the scattering layer 210 may be located within the opening OP of the pixel defining layer 380, or the opening OP of the pixel defining layer 380 may be located within the opening OPSL of the scattering layer 210.

[0933] In an embodiment, a portion of the opening OPSL of the scattering layer 210 may be located inside the opening OP of the pixel defining layer 380 in a plan view, and the remaining portion may be located outside the opening OP of the pixel defining layer 380 .

[0934] In an embodiment, the concave portion OPSL-c of the scattering layer 210 may be formed (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[0935] In addition, one side of the spacer 385 is disposed to be retracted inwardly from a corresponding side of the pixel defining layer 380 by a certain distance g1, and one side of the spacer 385 is also disposed to be retracted inwardly from a corresponding side of the light blocking region.

[0936] As a result, when viewed from the front side of the display panel DP, the spacer 385 may be shielded by the light blocking area and may not be visible.

[0937] When external light is incident, the external light passes through the second opening OPCF of the light blocking region of the color filter and the opening OPSL of the scattering layer 210 , and is then reflected from the sidewall of the opening OP of the pixel defining layer 380 .

[0938] The sidewall of the opening OP of the pixel defining layer 380 is curved, and color separation is generated depending on the position of reflection, so that the reflected light may appear in various colors such as rainbow.

[0939] Such color-separated reflected light may be easily recognized by the user's eyes and may reduce display quality, but in this embodiment, the scattering particles 211 located in the scattering layer 210 can make it difficult for the user to easily recognize the reflected light by scattering the light.

[0940] In addition, as described above, the shape, size, and angle of the opening OPSL of the scattering layer 210 are changed in various ways, and various openings OPSL of the scattering layer 210 are included in one display panel, so reflected external light may be prevented from forming a specific diffraction pattern.

[0941] As a result, it is possible to make it difficult for a user to recognize reflection of external light, thereby reducing degradation of display quality due to the reflected light.

[0942] In embodiments, the opening may be formed to have a non-elliptical shape or a nearly elliptical shape, and the direction or eccentricity thereof may be changed in various ways.

[0943] Furthermore, the second openings OPCF of the light blocking region of the color filter and the openings OP of the pixel defining layer 380 may be formed using various modifications of the second openings OPBM of the light blocking layer 220 and the corresponding openings OP of the pixel defining layer 380 described previously.

[0944] A planarization layer 550 covering the color filters 230R, 230G, 230B is positioned on the color filters 230R, 230G, 230B.

[0945] The planarization layer 550 is used to planarize the upper surface of the light-emitting display panel, and may be a transparent organic insulating layer including one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0946] In an embodiment, a low refractive index layer and an additional planarization layer may be further positioned on the planarization layer 550 to improve the front visibility and light output efficiency of the display panel.

[0947] Light can be refracted by the low refractive index layer and the additional planarization layer having high refractive properties and emitted toward the front surface.

[0948] In such an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be located directly on the color filter.

[0949] In such an embodiment, no polarizer is included on top of the planarization layer 550 .

[0950] In other words, the polarizer can prevent display quality from being deteriorated when external light is incident and reflected by the anode or the sidewall of the opening OP of the pixel defining layer 380 and is visible to the user.

[0951] However, the polarizer has an undesirable characteristic of consuming more power in order to display a specific brightness since it not only reduces reflection of external light but also reduces light emitted from the light emitting layer EML.

[0952] In an embodiment, the light emitting display device may not include a polarizer to reduce power consumption.

[0953] In addition, in this embodiment, the side of the anode is covered by the pixel defining layer 380 to reduce the degree of reflection from the anode, and a light-blocking area is formed in which at least two color filters overlap each other to prevent light from entering. Accordingly, this embodiment already includes a structure that reduces the degree of display quality degradation caused by reflection or prevents display quality degradation caused by reflection.

[0954] Therefore, no polarizer is formed in front of the light emitting display panel DP.

[0955] exist Fig.40 In an embodiment of the present invention, the light blocking region in which at least two color filters overlap is formed by overlapping three color filters.

[0956] However, in another embodiment, the light blocking region of the color filter may be formed by overlapping two color filters, such as Fig.41 as shown in .

[0957] Fig.41 is with Figure 7 and Fig.40 The corresponding view and the same as the color filters 230R, 230G, 230B Fig.40 is basically the same, so the structure of the lower portion of the third sensing insulating layer 511 is the same as Fig.40 The lower part has the same structure.

[0958] The following will describe Fig.40 The structure of the upper portion of the third sensing insulating layer 511 is different from that of the first sensing layer 512 .

[0959] refer to Fig.41 , a light blocking layer that blocks visible light is not formed, and the blue color filter 230B and the red color filter 230R are sequentially overlapped to block visible light.

[0960] The order of the color filter stacking may vary depending on the embodiment.

[0961] Specifically, the light blocking region in which two color filters overlap is composed of the overlapping blue color filter 230B and red color filter 230A, and there is also a portion in which the green color filter 230G overlaps in a part of the light blocking region of the color filters.

[0962] However, with Fig.40 Unlike the embodiment of FIG. 2 , the green color filter 230G is not formed in the light-blocking region of the color filter, and only two color filters are used to form the light-blocking region of the color filter.

[0963] The light blocking region in which the two color filters overlap is located only in a region overlapping the pixel defining layer 380 in a plan view, and one side of the light blocking region of the color filter is retracted inwardly from a corresponding side of the pixel defining layer 380 .

[0964] Only one color filter may be located in an area other than the light blocking area of ​​the color filter, and light of the color of the color filter is transmitted to form the light transmitting area of ​​the color filter or the second opening OPCF of the light blocking area of ​​the color filter.

[0965] The area of ​​the second opening OPCF is formed to be larger than the area of ​​the opening OP of the pixel defining layer 380 , and the opening OP of the pixel defining layer 380 may be located within the second opening OPCF of the light blocking region of the color filter in a plan view.

[0966] In an embodiment, the opening OPSL of the scattering layer 210 may be located within the second opening OPCF of the light blocking region, and in another embodiment, a portion of the opening OPSL of the scattering layer 210 may be located outside the second opening OPCF of the light blocking region.

[0967] In addition, in a plan view, the opening OPSL of the scattering layer 210 may be located inside or outside the opening OP of the pixel defining layer 380, so that the opening OPSL of the scattering layer 210 may be located within the opening OP of the pixel defining layer 380, or the opening OP of the pixel defining layer 380 may be located within the opening OPSL of the scattering layer 210.

[0968] In an embodiment, a portion of the opening OPSL of the scattering layer 210 may be located inside the opening OP of the pixel defining layer 380 in a plan view, and the remaining portion may be located outside the opening OP of the pixel defining layer 380 .

[0969] In an embodiment, the concave portion OPSL-c of the scattering layer 210 may be formed (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[0970] The light blocking region of the color filter also overlaps the scattering layer 210 , the spacer 385 , and the plurality of sensing electrodes 540 and 541 in a plan view, in addition to the pixel defining layer 380 .

[0971] Specifically, one side of the light blocking area of ​​the color filter is arranged to be retracted inwardly from the corresponding side of the pixel defining layer 380 by a certain interval g1, and one side of the spacer 385 is also arranged to be retracted inwardly from the corresponding side of the light blocking area of ​​the color filter.

[0972] In addition, the plurality of sensing electrodes 540 and 541 are covered by the light blocking region of the color filter in a plan view.

[0973] As a result, when viewed from the front side of the display panel DP, the spacer 385 and the plurality of sensing electrodes 540 and 541 may not be visible because they are shielded by the light-blocking region of the color filter.

[0974] In an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0975] The color conversion layer may include quantum dots.

[0976] With Fig.41 The embodiment of the cross-sectional structure shown in FIG. 1 may have a Fig.42 and Fig.43 The planar structure shown in .

[0977] Fig.42 and Fig.43 An example may be from Fig. 9 Embodiment of the modified planar structure.

[0978] First, through Fig.42 The planar structure of each of the color filters 230R, 230G, and 230B is described in detail.

[0979] Fig.42 is a plan view showing a color filter of a display area according to another embodiment.

[0980] Fig.42 (A) shows a layer in which the blue color filter 230B is formed, and hatching is drawn at a portion in which the blue color filter 230B is located.

[0981] The remaining layers are Fig.42 In (A), it is shown by a dotted line.

[0982] like Fig.42 As shown in (A) of FIG. 8 , the blue color filter 230B is located in the light blocking region and the blue light transmitting region that transmits blue light, and is not formed in the red light transmitting region and the green light transmitting region.

[0983] also, Fig.42(B) shows a layer in which the red filter 230R is formed, and hatching is drawn at a portion in which the red filter 230R is located.

[0984] The remaining layers are Fig.42 In (B), it is shown by a dotted line.

[0985] like Fig.42 As shown in (B) of FIG. 8 , the red color filter 230R is located in the light blocking region and the red light transmitting region that transmits red light, and is not formed in the blue light transmitting region and the green light transmitting region.

[0986] Fig.42 (C) shows a layer in which the green filter 230G is formed, and hatching is drawn at a portion in which the green filter 230G is located.

[0987] The remaining layers are Fig.42 In (C), it is shown by a dotted line.

[0988] like Fig.42 As shown in (C), the green color filter 230G is formed in an island structure and is located only in a green light transmission region that transmits green light, and is not formed in a light blocking region and red and blue light transmission regions.

[0989] In an embodiment, green color filter 230G may overlap a portion of a light blocking region of the color filter.

[0990] You can do this by Fig.42 (A) Fig.42 (B) and Fig.42 The color filters shown in (C) are combined to obtain Fig.43 The planar structure shown in .

[0991] Fig.43 is a plan view of a portion of a display panel according to another embodiment.

[0992] Fig.43 is with Fig. 9 The corresponding plane diagram, where Fig. 9 Unlike the embodiment of FIG. 2 , a light blocking area is formed by overlapping two or more color filters instead of a light blocking layer, and the green color filter 230G has an island structure.

[0993] Here, the boundary of the green filter 230G is further shown outside the green second opening OPCFg among the second openings of the light-blocking area of ​​the color filter, so that the green filter 230G has an island structure and partially overlaps the light-blocking area of ​​the color filter.

[0994] exist Fig.43In the figure, the red filter 230R and the blue filter 230B are each located in the light blocking area, but the shadows corresponding to the red filter 230R and the blue filter 230B are not shown in the light blocking area. Instead, "230B / 230R" clearly indicates that the light blocking area is where the blue filter 230B and the red filter 230R are located.

[0995] Fig.44 It is shown how the role of the light-blocking layer can be replaced by stacking two color filters.

[0996] Fig.44 is a graph showing transmittance versus wavelength for a color filter.

[0997] Fig.44 2 is a graph of transmittance with respect to wavelength of each color filter 230R, 230G, 230B, so that light in the wavelength range indicated by a high point is transmitted.

[0998] refer to Fig.44 Each of the color filters 230R, 230G, 230B has a transmittance of less than 10% for a portion other than a wavelength band that can pass through the color filter, and it can be confirmed that there is almost no wavelength band that can pass through when three or two color filters are overlapped.

[0999] Therefore, it can be confirmed that the role of the light blocking layer can be replaced by overlapping at least two color filters, and Fig.40 Overlap the three filters as in Figure 41 to Figure 43 As in the example, two color filters are overlapped to replace the light-blocking layer.

[1000] Will pass Fig.45 and Fig.46 The stack structure of the display area DA and the first assembly area EA1 is described in more detail.

[1001] Fig.45 and Fig.46 is a cross-sectional view of a light emitting display device according to an embodiment.

[1002] Fig.45 An embodiment including a light blocking layer 220 is shown, and Fig.46 An embodiment is shown in which a light blocking region of a color filter is formed by overlapping a blue color filter 230B and a red color filter 230R instead of the light blocking layer 220 .

[1003] First, we will describe in detail Fig.45 Embodiment of the invention.

[1004] The light emitting display device can be mainly divided into a lower panel layer and an upper panel layer. The lower panel layer is where the light emitting diode and pixel circuit part of the pixel are located, and may even include an encapsulation layer 400 covering the pixel.

[1005] Here, the pixel circuit portion includes the second organic layer 182 and the third organic layer 183 and refers to the portion under the second organic layer 182 and the third organic layer 183 , and the light emitting diode is the portion on the third organic layer 183 and is located at the bottom of the encapsulation layer 400 .

[1006] The structure located on the top of the encapsulation layer 400 may correspond to an upper panel layer.

[1007] refer to Fig.45 , the metal layer BML is located on the substrate 110 .

[1008] The substrate 110 may include a material having a rigid property and not being bendable, such as glass, or may include a flexible material capable of being bendable, such as plastic or polyimide.

[1009] In the case of flexible substrates, such as Fig.45 As shown in , the substrate 110 may have a double-layer structure of polyimide and a barrier layer formed of an inorganic insulating material on the double-layer structure.

[1010] The metal layer BML may be formed at a position overlapping a channel of the driving transistor among the subsequent first semiconductor layer in a plan view, and is also referred to as a lower shielding layer.

[1011] The metal layer BML may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti).

[1012] A buffer layer 111 covering the substrate 110 and the metal layer BML is located on the substrate 110 .

[1013] The buffer layer 111 is used to prevent impurity elements from penetrating into the first semiconductor layer ACT (P-Si), and is composed of silicon oxide (SiO x ), Silicon Nitride (SiN x ), silicon oxynitride (SiO x N y ) and other inorganic insulating materials.

[1014] A first semiconductor layer ACT (P—Si) including or formed of a silicon semiconductor (eg, a polycrystalline silicon semiconductor (P—Si)) is located on the buffer layer 111 .

[1015] The first semiconductor layer ACT (P-Si) includes a channel of a polycrystalline transistor LTPS TFT including a driving transistor, and first and second regions located at both sides of the channel.

[1016] Here, the polycrystalline transistor LTPS TFT may include not only a driving transistor but also various switching transistors or compensation transistors.

[1017] In addition, the first semiconductor layer ACT (P—Si) has regions having characteristics of a conductive layer by plasma treatment or doping on both sides of the channel and can function as a first electrode and a second electrode of the transistor.

[1018] The first gate insulating layer 141 may be positioned on the first semiconductor layer ACT (P—Si).

[1019] The first gate insulating layer 141 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[1020] A first gate conductive layer GAT1 including a gate electrode of the polycrystalline transistor LTPS TFT may be positioned on the first gate insulating layer 141 .

[1021] The first gate conductive layer GAT1 may define a first scan line or an emission control line in addition to a gate electrode of the polycrystalline transistor LTPS TFT.

[1022] The first gate conductive layer GAT1 may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may be composed of a single layer or a multi-layer.

[1023] After the first gate conductive layer GAT1 is formed, a plasma treatment or a doping process may be performed to make the exposed region of the first semiconductor layer ACT (P—Si) conductive.

[1024] That is, the first semiconductor layer ACT (P—Si) covered by the first gate conductive layer GAT1 is not conductive, and a portion of the first semiconductor layer ACT (P—Si) not covered by the first gate conductive layer GAT1 may have the same characteristics as those of a conductive layer.

[1025] The second gate insulating layer 142 may be positioned on the first gate conductive layer GAT1 and the first gate insulating layer 141 .

[1026] The second gate insulating layer 142 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[1027] A second gate conductive layer including one electrode GAT2 (Cst) of the sustain capacitor Cst and a lower shielding layer GAT2 (BML) of the oxide transistor Oxide TFT is positioned on the second gate insulating layer 142 .

[1028] The lower shielding layer GAT2 (BML) of the oxide transistor Oxide TFT is located at the bottom of the channel of each oxide transistor Oxide TFT, and serves to shield light or electromagnetic interference provided from the bottom to the channel.

[1029] In an embodiment, one electrode GAT2 (Cst) of the sustain capacitor Cst overlaps the gate electrode of the driving transistor to form the sustain capacitor Cst.

[1030] In an embodiment, the second gate conductive layer may further include a scan line, a control line or a voltage line.

[1031] The second gate conductive layer may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may be composed of (or defined by) a single layer or a multilayer.

[1032] The first interlayer insulating layer 161 may be positioned on the second gate conductive layer.

[1033] In an embodiment, the first interlayer insulating layer 161 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiO x N y ) of the inorganic insulating layer, and in an embodiment, the inorganic insulating material can be formed thicker.

[1034] An oxide semiconductor layer ACT2 (IGZO) including a channel of the oxide transistor Oxide TFT, a first region, and a second region may be positioned on the first interlayer insulating layer 161 .

[1035] The third gate insulating layer 143 may be located on the oxide semiconductor layer ACT2 (IGZO).

[1036] The third gate insulating layer 143 may be positioned on the front surfaces of the oxide semiconductor layer ACT2 (IGZO) and the first interlayer insulating layer 161 .

[1037] The third gate insulating layer 143 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[1038] A third gate conductive layer GAT3 including a gate electrode of the oxide transistor Oxide TFT may be positioned on the third gate insulating layer 143 .

[1039] The gate electrode of the oxide transistor Oxide TFT may overlap with the channel.

[1040] The third gate conductive layer GAT3 may further include a scan line or a control line, and may additionally include a connection electrode connected to the lower shielding layer GAT2 (BML) of the oxide transistor Oxide TFT.

[1041] The third gate conductive layer GAT3 may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may be composed of (or defined by) a single layer or a plurality of layers.

[1042] The second interlayer insulating layer 162 may be positioned on the third gate conductive layer GAT3 .

[1043] The second interlayer insulating layer 162 may have a single-layer or multi-layer structure.

[1044] The second interlayer insulating layer 162 may include silicon nitride (SiN x ), silicon oxide (SiO x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating material, or may include an organic material.

[1045] The first data conductive layer SD1 is positioned on the second interlayer insulating layer 162 and includes a connection electrode of a first region and a second region connected to each of the polycrystalline transistor LTPS TFT and the oxide transistor Oxide TFT.

[1046] The first data conductive layer SD1 may include a metal such as aluminum (Al), copper (Cu), molybdenum (Mo), titanium (Ti) or a metal alloy, and may be composed of (or defined by) a single layer or a plurality of layers.

[1047] The first organic layer 181 may be positioned on the first data conductive layer SD1 .

[1048] The first organic layer 181 may be an organic insulating layer including an organic material, and the organic material includes at least one material selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[1049] The second data conductive layer including the anode connection electrode ACM2 may be positioned on the first organic layer 181 .

[1050] The second data conductive layer may include a data line or a driving voltage line.

[1051] The second data conductive layer may include a metal or a metal alloy such as aluminum (Al), copper (Cu), molybdenum (Mo), or titanium (Ti), and may be composed of (or defined by) a single layer or a multilayer.

[1052] The second organic layer 182 and the third organic layer 183 are positioned on the second data conductive layer, and an anode connection opening OP4 is provided in the second organic layer 182 and the third organic layer 183 .

[1053] The anode connection electrode ACM2 is electrically connected to the anode through the anode connection opening OP4.

[1054] The second organic layer 182 and the third organic layer 183 may be organic insulating layers, and may include at least one material selected from polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[1055] In an embodiment, the third organic layer 183 may be omitted.

[1056] The pixel defining layer 380 may be positioned on the anode and have an opening OP exposing the anode and covering at least a portion of the anode.

[1057] In an embodiment, the pixel defining layer 380 may be a black pixel defining layer including or formed of a black organic material to prevent externally applied light from being reflected back to the outside, and in another embodiment, the pixel defining layer may include or be formed of a transparent organic material.

[1058] In an embodiment, the pixel defining layer 380 may include a negative type black organic material and a black pigment.

[1059] The spacer 385 is located on the pixel defining layer 380 .

[1060] The spacer 385 may include a first portion 385 - 1 that is tall (or protruding) and located in a narrow region and a second portion 385 - 2 that is short and located in a wide region.

[1061] Unlike the pixel defining layer 380 , the spacer 385 may include or be formed of a transparent organic insulating material.

[1062] In an embodiment, the spacer 385 may include or be formed of a positive type transparent organic material.

[1063] A pixel defining layer 380 , a spacer 385 , a functional layer FL, and a cathode are sequentially formed on top of the anode and in the display area DA and the first component area EA1 , and the functional layer FL and the cathode may be located in all areas.

[1064] The light emitting layer EML is located between the functional layers FL, and the light emitting layer EML may be located only within the opening OP of the pixel defining layer 380 .

[1065] In an embodiment, the functional layer FL and the light emitting layer EML may be combined with each other and may also be collectively referred to as an intermediate layer.

[1066] The functional layer FL may include at least one of auxiliary layers such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer, and the hole injection layer and the hole transport layer may be located below the light-emitting layer EML, and the electron transport layer and the electron injection layer may be located on top of the light-emitting layer EML.

[1067] The encapsulation layer 400 is located on the cathode.

[1068] The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and in an embodiment may have a three-layer structure including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer.

[1069] The encapsulation layer 400 may be used to protect the light emitting layer EML from moisture or oxygen that may enter from the outside.

[1070] In an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[1071] Sensing insulation layers 501 , 510 , 511 and a plurality of sensing electrodes 540 , 541 are positioned on the encapsulation layer 400 for touch detection.

[1072] exist Fig.45 In the embodiment of FIG. 5 , the touch can be sensed in a mutual capacitance manner using two sensing electrodes 540 and 541 .

[1073] Specifically, a first sensing insulating layer 501 is formed on the encapsulation layer 400 , and a plurality of sensing electrodes 540 and 541 are formed on the first sensing insulating layer 501 .

[1074] The plurality of sensing electrodes 540 and 541 may be insulated with the second sensing insulating layer 510 interposed therebetween, and some of the plurality of sensing electrodes 540 or 541 may be electrically connected through openings located in the second sensing insulating layer 510 .

[1075] Here, the sensing electrodes 540, 541 may include a metal or a metal alloy such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), tantalum (Ta), and may be composed of (or defined by) a single layer or a plurality of layers.

[1076] The third sensing insulating layer 511 is formed on the sensing electrode 540 .

[1077] The scattering layer 210 , the light blocking layer 220 , and the color filters 230R, 230G, 230B are positioned on the third sensing insulating layer 511 .

[1078] The scattering layer 210 may be positioned to overlap the pixel defining layer 380 and the sensing electrodes 540 and 541 in a plan view, a portion of the scattering layer 210 overlaps the anode in a plan view, and the remaining portion may not overlap the anode.

[1079] The scattering layer 210 may overlap the pixel defining layer 380 in a plan view.

[1080] The scattering layer 210 includes scattering particles 211 capable of scattering light, and has an opening OPSL at least partially overlapping the opening OP of the pixel defining layer 380 in a plan view.

[1081] The size, shape, and arrangement direction of the opening OPSL of the scattering layer 210 may be changed, and according to the present embodiment, a concave portion of the scattering layer 210 may be formed (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[1082] The light blocking layer 220 may be positioned to overlap the sensing electrodes 540 and 541 in a plan view.

[1083] The light blocking layer 220 has the second opening OPBM, and the second opening OPBM of the light blocking layer 220 overlaps with the opening OP of the pixel defining layer 380 in a plan view.

[1084] In addition, the second opening OPBM of the light blocking layer 220 may be formed wider than the opening OP of the pixel defining layer 380 .

[1085] As a result, the anode overlapped with (ie, exposed by) the opening OP of the pixel defining layer 380 is also exposed by the light blocking layer 220 in a plan view, and thus may not be shielded by the light blocking layer 220 .

[1086] This is to ensure that the anode and the light emitting layer EML capable of displaying an image are not shielded by the light blocking layer 220 and the sensing electrodes 540 and 541 .

[1087] The second openings OPBM of the light blocking layer 220 may be formed larger than the openings OPSL of the scattering layer 210 , and at least a portion of the second openings OPBM of the light blocking layer 220 may overlap with the openings OPSL of the scattering layer 210 in a plan view.

[1088] In addition, the light blocking layer 220 has a structure overlapping with the anode connection opening OP4 in a plan view but not overlapping with the opening OP3 of the first organic layer 181 in a plan view.

[1089] like Figure 7 As shown in FIG. 2 , the color filters 230R, 230G, 230B are positioned on the sensing insulation layers 501 , 510 , 511 , the scattering layer 210 , and the light blocking layer 220 .

[1090] In an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[1091] The color conversion layer may include quantum dots.

[1092] The planarization layer 550 may be positioned on the color filters 230R, 230G, 230B to cover the color filters 230, 230G, and 230B, and in an embodiment, a low refractive index layer and an additional planarization layer may be further positioned on top of the planarization layer 550 to improve the front visibility and light output efficiency of the display device.

[1093] Light can be refracted by the low refractive index layer and the additional planarization layer having high refractive properties and emitted toward the front surface.

[1094] In such an embodiment, planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be directly located on color filter 230 .

[1095] In such an embodiment, no polarizer is included on top of the planarization layer 550 .

[1096] In other words, when external light is incident and reflected by the anode or the like and is visible to the user, the polarizer can play a role in preventing display quality from being deteriorated.

[1097] However, in this embodiment, the side of the anode is covered by the pixel defining layer 380 to reduce the degree of reflection from the anode, and the scattering layer 210 and the light blocking layer 220 are also formed to prevent display quality degradation due to reflection.

[1098] Therefore, there is no need to provide a polarizer in front of the display panel DP.

[1099] In an embodiment, Fig.45 , in addition to the stack structure of the display area DA, a cross-sectional structure of a first assembly area EA1 formed to allow light to be transmitted to a portion of the display area DA is also shown.

[1100] exist Fig.45 , the first element area EA1 is divided into a first optical sensor area OPS1 (also referred to as a transmissive optical sensor area) and a second optical sensor area OPS2 (also referred to as a non-transmissive optical sensor area).

[1101] In an embodiment, the first optical sensor region OPS1 is a region formed to allow light to pass therethrough, and the additional openings OP-1, OPSL-1, OPBM-1 are formed not to overlap the pixel defining layer 380, the scattering layer 210, and the light blocking layer 220 in a plan view.

[1102] In an embodiment, the second optical sensor region OPS2 is a region formed to overlap the pixel defining layer 380 , the scattering layer 210 , and the light blocking layer 220 in a plan view so that light cannot penetrate.

[1103] Both the first optical sensor area OPS1 and the second optical sensor area OPS2 of the first component area EA1 may not include a light blocking layer such as a metal layer or a semiconductor layer.

[1104] In an embodiment, for example, the first optical element (see Figure 2 ES1) is located at the back side of the first component area EA1, and can detect the front side of the light-emitting display device through the first optical sensor area OPS1 located in the first component area EA1.

[1105] Specifically, the stacked structure of the first component area EA1 is as follows.

[1106] A buffer layer 111 , which is an inorganic insulating layer, is positioned on the substrate 110 , and a first gate insulating layer 141 and a second gate insulating layer 142 , which are inorganic insulating layers, are sequentially positioned on the buffer layer 111 .

[1107] Furthermore, a first interlayer insulating layer 161 , a third gate insulating layer 143 , and a second interlayer insulating layer 162 , which are inorganic insulating layers, are sequentially stacked on the second gate insulating layer 142 .

[1108] On the second interlayer insulating layer 162 , a first organic layer 181 , a second organic layer 182 , and a third organic layer 183 , which are organic insulating layers, are sequentially stacked.

[1109] The functional layer FL may be located on the third organic layer 183 , and the cathode may be located on the third organic layer 183 .

[1110] The encapsulation layer 400 is positioned on the cathode, and the sensing insulating layers 501 , 510 , 511 are sequentially positioned on top of the cathode.

[1111] The encapsulation layer 400 may have a three-layer structure sequentially including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer.

[1112] In addition, the sensing insulating layers 501 , 510 , and 511 may all be inorganic insulating layers.

[1113] The planarization layer 550 may be positioned on the sensing insulation layers 501 , 510 , 511 .

[1114] In the first component area EA1 as described above, the metal layer, the first semiconductor layer, the first gate conductive layer, the second gate conductive layer, the oxide semiconductor layer, the third gate conductive layer, the first data conductive layer, the second data conductive layer and the anode are not located therein.

[1115] In addition, the light emitting layer EML and the sensing electrodes 540 and 541 are not formed.

[1116] Furthermore, in the first optical sensor region OPS1 of the first component area EA1, additional openings OP-1, OPSL-1, OPBM-1 may be formed so that the pixel defining layer 380, the scattering layer 210, and the light blocking layer 220 are not formed.

[1117] As a result, light may pass through the first optical sensor area OPS1 and may not be scattered.

[1118] In embodiments, the second optical sensor region OPS2 in the first component area EA1 may have a structure in which light may not penetrate without forming additional openings OP- 1 , OPSL- 1 , OPBM- 1 by overlapping the pixel defining layer 380 and the light blocking layer 220 .

[1119] In an embodiment, a recessed portion of the scattering layer 210 may be provided (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[1120] As described above, the embodiment in which a total of three organic layers are formed and the anode connection opening is formed in the second organic layer and the third organic layer is described.

[1121] In embodiments where at least two organic layers may be formed, the anode connection opening may be located in an upper organic layer located away from the substrate, and the lower organic layer opening may be located in the lower organic layer.

[1122] In the following we will refer to Fig.46 An embodiment is described in which a light blocking region of a color filter is formed by overlapping a blue color filter 230B and a red color filter 230R instead of the light blocking layer 220 .

[1123] exist Fig.46 In the embodiment, the third sensing insulating layer 511 and the structure thereunder are Fig.45 The structure is the same as in FIG. , so only the difference will be described in detail below. Fig.45 The upper structure of the third sensing insulation layer 511 is shown in FIG.

[1124] The color filters 230R, 230G, and 230B are located on the third sensing insulation layer 511 .

[1125] exist Fig.46 In an embodiment, the light blocking layer is not included, and the role of the light blocking layer is performed by the overlapping color filters 230R, 230B, and the overlapping color filters 230R, 230B may be positioned to overlap the scattering layer 210 and the sensing electrodes 540, 541 in a plan view.

[1126] The overlapped color filters 230R, 230B have second openings OPCF, and the second openings OPCF of the overlapped color filters 230R, 230B overlap with the openings OP of the pixel defining layer 380 and the openings OPSL of the scattering layer 210 in a plan view.

[1127] In addition, the second opening OPCF of the overlapped color filters 230R, 230B may be formed wider than the opening OP of the pixel defining layer 380 .

[1128] As a result, the overlapped anode (ie, exposed by the opening OP of the pixel defining layer 380 ) may have a structure that is not shielded by the overlapped color filters 230R, 230B in a plan view.

[1129] This is to ensure that the anode and the light emitting layer EML capable of displaying an image are not shielded by the overlapping color filters 230R, 230B and the sensing electrodes 540 and 541 .

[1130] In addition, the overlapping color filters 230R, 230B have a structure overlapping with the anode connection opening OP4 in a plan view.

[1131] The second openings OPCF of the overlapped color filters 230R, 230B may be formed larger than the openings OPSL of the scattering layer 210 , and at least a portion of the second openings OPCF of the overlapped color filters 230R, 230B may overlap with the openings OPSL of the scattering layer 210 in a plan view.

[1132] A color filter may be located within the second opening OPCF of the overlapping color filters 230R, 230B, and Fig.46 In the figure, the green filter 230G is located therein.

[1133] In an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[1134] The color conversion layer may include quantum dots.

[1135] Above the color filters 230R, 230G, 230B is a planarization layer 550 covering the color filters 230R, 230G, 230B, and above the planarization layer 550 may be a low refractive index layer and additional planarization layers to improve front visibility and light output efficiency of the display device.

[1136] In an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be directly located on the color filter.

[1137] exist Fig.46 In an embodiment, no polarizer is included on top of the planarization layer 550.

[1138] In other words, when external light is incident and reflected by the anode or the like and is visible to the user, the polarizer can play a role in preventing display quality from being deteriorated.

[1139] However, in this embodiment, the side of the anode is covered by a pixel defining layer 380 to reduce the degree of reflection from the anode, and overlapping color filters 230R, 230B and a scattering layer 210 are also formed to reduce the amount of light incident on the anode and prevent display quality degradation due to reflection.

[1140] Therefore, in this embodiment, no polarizer is separately provided in front of the display panel DP.

[1141] The size, shape, and arrangement direction of the opening OPSL of the scattering layer 210 may be changed, and according to the present embodiment, a concave portion of the scattering layer 210 may be formed (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[1142] In the embodiment, according to Fig.46 The cross-sectional structure of the first component area EA1 of the embodiment may be as follows.

[1143] The first element area EA1 is divided into a first optical sensor area OPS1 and a second optical sensor area OPS2.

[1144] Here, the first optical sensor area OPS1 is an area formed to allow light to pass therethrough, wherein each additional opening OP-1, OPSL-1, OPCF-1 is positioned so as not to overlap with the pixel defining layer 380, the scattering layer 210, and the light blocking area of ​​the color filter formed by overlapping at least two color filters in a plan view.

[1145] In such an embodiment, the second optical sensor area OPS2 is an area formed to overlap the pixel defining layer 380, the scattering layer 210, and the light blocking area of ​​the color filter formed by overlapping at least two color filters in a plan view, and is formed so that light cannot penetrate.

[1146] Both the first optical sensor area OPS1 and the second optical sensor area OPS2 of the first component area EA1 may not include a light blocking layer such as a metal layer or a semiconductor layer.

[1147] In an embodiment, for example, the first optical element (see Figure 2 ES1) is located at the back of the first component area EA1, and can detect the front of the light-emitting display device through the first optical sensor area OPS1 located in the first component area EA1.

[1148] Specifically, the stacked structure of the first component area EA1 is as follows.

[1149] A buffer layer 111 , which is an inorganic insulating layer, is positioned on the substrate 110 , and a first gate insulating layer 141 and a second gate insulating layer 142 , which are inorganic insulating layers, are sequentially positioned on the buffer layer 111 .

[1150] Furthermore, a first interlayer insulating layer 161 , a third gate insulating layer 143 , and a second interlayer insulating layer 162 , which are inorganic insulating layers, are sequentially stacked on the second gate insulating layer 142 .

[1151] On the second interlayer insulating layer 162 , a first organic layer 181 , a second organic layer 182 , and a third organic layer 183 , which are organic insulating layers, are sequentially stacked.

[1152] The functional layer FL may be located on the third organic layer 183 , and the cathode may be located on the third organic layer 183 .

[1153] The encapsulation layer 400 is positioned on the cathode, and the sensing insulating layers 501 , 510 , 511 are sequentially positioned on top of the cathode.

[1154] The encapsulation layer 400 may have a three-layer structure sequentially including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer.

[1155] In addition, the sensing insulating layers 501 , 510 , and 511 may all be inorganic insulating layers.

[1156] The planarization layer 550 may be positioned on the sensing insulation layers 501 , 510 , 511 .

[1157] In the first component area EA1 as described above, the metal layer, the first semiconductor layer, the first gate conductive layer, the second gate conductive layer, the oxide semiconductor layer, the third gate conductive layer, the first and second data conductive layers and the anode are not located therein.

[1158] In addition, the light emitting layer EML and the sensing electrodes 540 and 541 are not formed.

[1159] Furthermore, in the first optical sensor region OPS1 of the first component area EA1, additional openings OP-1, OPSL-1, OPCF-1 may be formed so that the pixel defining layer 380, the scattering layer 210, and the color filter may not be formed.

[1160] As a result, light may pass through the first optical sensor area OPS1.

[1161] On the other hand, the second optical sensor area OPS2 of the first component area EA1 may have a structure in which additional openings OP-1, OPSL-1, OPCF-1 are not formed by overlapping the light blocking area of ​​the color filter, the pixel defining layer 380, and the scattering layer 210 so that light does not pass through and is not scattered.

[1162] In an embodiment, a recessed portion of the scattering layer 210 is provided (see Fig.38 ) is used to replace the opening OPSL of the scattering layer 210.

[1163] As described above, the embodiment in which a total of three organic layers are formed and the anode connection opening is formed in the second organic layer and the third organic layer is described.

[1164] However, at least two organic layers may be formed, and in this case, the anode connection opening may be located in an upper organic layer away from the substrate, and the lower organic layer opening may be located in the lower organic layer.

[1165] The present invention should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art.

[1166] While the invention has been particularly shown and described with reference to embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit or scope of the invention as defined by the claims.

Claims

1. A light-emitting display device, comprising: substrate; an anode, located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined through the pixel defining layer to overlap the anode; a light emitting layer, located in the first opening of the pixel defining layer; A cathode, located on the light-emitting layer and the pixel defining layer; An encapsulation layer, located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a scattering layer opening is defined through the scattering layer to at least partially overlap with the first opening in a plan view; as well as a light blocking layer on the scattering layer, wherein a second opening is defined through the light blocking layer to overlap with the first opening in the plan view, and At least one selected from the first opening, the scattering layer opening, and the second opening has an oval planar shape.

2. The light-emitting display device according to claim 1, wherein: The first opening and the second opening have a circular planar shape, and The scattering layer opening has the oval planar shape.

3. The light-emitting display device according to claim 2, wherein: The scattering layer opening contacts the first opening and / or the second opening in the plan view.

4. The light-emitting display device according to claim 2, wherein: A portion of the first opening is covered by the scattering layer.

5. The light-emitting display device according to claim 1, wherein: The first opening and the second opening have an elliptical planar shape.

6. The light-emitting display device according to claim 5, wherein: The scattering layer opening has the oval planar shape.

7. The light-emitting display device according to claim 6, wherein: The scattering layer opening and the first opening coincide with each other in the plan view.

8. The light-emitting display device according to claim 6, wherein: The long axis direction of the scattering layer opening is different from the long axis direction of the first opening and / or the long axis direction of the second opening.

9. The light emitting display device according to claim 5, wherein: The scattering layer opening has a circular planar shape.

10. The light emitting display device according to claim 5, wherein: A portion of the first opening is covered by the scattering layer.

11. The light emitting display device according to any one of claims 1 to 10, wherein: The oval plan shape is a plan shape in which at least two elliptical plan shapes having different plan eccentricities are combined.

12. A light-emitting display device, comprising: substrate; a plurality of anodes disposed on the substrate; a pixel defining layer located on the plurality of anodes, wherein a plurality of first openings are defined through the pixel defining layer to overlap the plurality of anodes respectively; A plurality of light-emitting layers are respectively located in the plurality of first openings of the pixel defining layer; a cathode, located on the plurality of light-emitting layers and the pixel defining layer; An encapsulation layer, located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a plurality of scattering layer openings are defined through the scattering layer to at least partially overlap with the plurality of first openings, respectively, in a plan view; as well as a light blocking layer located on the scattering layer, wherein a plurality of second openings are defined through the light blocking layer to overlap with the plurality of first openings respectively in the plan view, Each of the plurality of first openings, the plurality of scattering layer openings, and the plurality of second openings has a circular shape in the plan view, and Each of the plurality of scattering layer openings is located within a corresponding one of the plurality of first openings in the plan view.

13. The light emitting display device according to claim 12, wherein: The first openings and the scattering layer openings corresponding to each other among the plurality of first openings and the plurality of scattering layer openings have the same center in the plan view.

14. The light emitting display device according to claim 12, wherein: At least one of the plurality of first openings does not overlap with the plurality of scattering layer openings in the plan view.

15. A light-emitting display device, comprising: substrate; an anode, located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined through the pixel defining layer to overlap the anode; a light emitting layer, located in the first opening of the pixel defining layer; A cathode, located on the light-emitting layer and the pixel defining layer; An encapsulation layer, located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a scattering layer recess is defined in the scattering layer to at least partially overlap the first opening in a plan view; as well as a light blocking layer located on the scattering layer, wherein a second opening is defined through the light blocking layer to overlap with the first opening in the plan view, The concave portion of the scattering layer is thinner than other portions of the scattering layer.

16. The light emitting display device according to claim 15, wherein: Each of the first opening, the scattering layer recess, and the second opening has a circular planar shape or an oval planar shape.

17. The light emitting display device according to claim 16, wherein: The oval plan shape is a plan shape in which at least two elliptical plan shapes having different plan eccentricities are combined.

18. A light-emitting display device, comprising: substrate; an anode, located on the substrate; a pixel defining layer located on the anode, wherein a first opening is defined through the pixel defining layer to overlap the anode; a light emitting layer, located in the first opening of the pixel defining layer; A cathode, located on the light-emitting layer and the pixel defining layer; An encapsulation layer, located on the cathode; a scattering layer located on the encapsulation layer, wherein the scattering layer includes scattering particles, and a scattering layer opening is defined through the scattering layer to at least partially overlap with the first opening in a plan view; as well as A plurality of color filters are disposed on the scattering layer, wherein the plurality of color filters correspond to different colors respectively. The plurality of color filters include at least two color filters overlapping each other in the light blocking region of the color filters, and the second opening is defined to correspond to a region in which only one color filter among the plurality of color filters is located and overlaps with the first opening in the plan view.

19. The light emitting display device according to claim 18, wherein: Each of the first opening, the scattering layer opening, and the second opening has a circular plan shape or an oval plan shape.

20. The light emitting display device according to claim 19, wherein: The oval plan shape is a plan shape in which at least two elliptical plan shapes having different plan eccentricities are combined.

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