Light-emitting display device

Abstract

There is provided a light emitting display device including: a substrate; a plurality of anodes on the substrate; a pixel defining layer defining a plurality of first openings respectively overlapping the plurality of anodes; the plurality of light-emitting layers are respectively positioned in the plurality of first openings of the pixel defining layer; a cathode disposed on the plurality of light emitting layers and the pixel defining layer; the packaging layer is located on the cathode; and a plurality of color filters corresponding to different colors and located on the encapsulation layer. The plurality of color filters define a plurality of second openings, only one color filter of the plurality of color filters is located in each of the plurality of second openings, and the plurality of color filters includes a light blocking region in which at least two color filters of the plurality of color filters overlap in a plan view, and the first opening or the second opening has an elliptical shape.

Description

[0001] This application claims priority to and all benefits arising from Korean Patent Application No. 10-2023-0165976, filed on November 24, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a light-emitting display device. Background Art

[0003] The display device is a device that displays a picture, and includes a liquid crystal display ("LCD") device and an organic light emitting diode ("OLED") display device.

[0004] 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.

[0005] A display device such as an organic light emitting display device may have a structure in which the display device is bent or folded using a flexible substrate.

[0006] 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 a display screen increases, the size of the bezel area surrounding the display area is gradually decreasing. Technology is being developed to position an optical sensor behind the display area. Summary of the invention

[0007] The embodiment is directed to reducing a diffraction pattern occurring when external light is reflected or lowering reflectivity. The embodiment is directed to providing a light emitting display device that generates less color separation of external light or generates a constant diffraction pattern regardless of an angle.

[0008] Furthermore, the embodiments do not form a black light blocking layer on the front surface of the display panel, but a plurality of color filters are stacked to prevent external light from being reflected or transmitted, thereby reducing the resulting diffraction pattern or causing less color separation of external light.

[0009] According to an embodiment, a light-emitting display device includes: a substrate; a plurality of anodes located on the substrate; a pixel defining layer defining a plurality of first openings respectively overlapped with the plurality of anodes; a plurality of light-emitting layers respectively located in the plurality of first openings of the pixel defining layer; a cathode disposed on the plurality of light-emitting layers and the pixel defining layer; an encapsulation layer located on the cathode; and a plurality of color filters corresponding to different colors and located on the encapsulation layer, wherein the plurality of color filters define a plurality of second openings, only one color filter of the plurality of color filters is located in each of the plurality of second openings, and the plurality of color filters include a light blocking area, in which at least two color filters of the plurality of color filters are overlapped in a plan view, and at least one first opening among the plurality of first openings of the pixel defining layer and at least one second opening among the plurality of second openings of the plurality of color filters each have an elliptical shape in a plan view.

[0010] The multiple first openings may include four or more long axes, the multiple second openings may include four or more long axes, and the angle formed by the long axes of two first openings having an elliptical shape among the multiple first openings or the angle formed by the long axes of two second openings having an elliptical shape among the multiple second openings may be 45 degrees or less.

[0011] Each of the plurality of first openings or each of the plurality of second openings may have an eccentricity of 0.2 to 0.85.

[0012] The plurality of first openings and the plurality of second openings overlapping the plurality of first openings in plan view may be formed at regular intervals in plan view. The first openings and the second openings overlapping the first openings in plan view may have a horizontal gap greater than 0 micrometers (μm) and less than or equal to 20 μm.

[0013] The first opening and the second opening overlapping the first opening in a plan view may have the same major axis direction or may have an angle of 20 degrees or less between the major axis directions thereof.

[0014] The first opening or the second opening may have a planar shape merging at least two elliptical-shaped portions having different eccentricities in a plan view.

[0015] The first opening or the second opening may have a planar shape formed by cutting a first ellipse having a first eccentricity and a second ellipse having a second eccentricity in a first direction and then merging the cut portion of the first ellipse and the cut portion of the second ellipse.

[0016] In the light blocking region of the plurality of color filters, a blue color filter and a red color filter may overlap each other, and each of the plurality of second openings may overlap one of the blue color filter, the red color filter, and the green color filter.

[0017] According to an embodiment, a light-emitting display device includes: a substrate; a plurality of anodes located on the substrate; a pixel defining layer defining a plurality of first openings respectively overlapping the plurality of anodes; a plurality of light-emitting layers respectively located in the plurality of first openings of the pixel defining layer; a cathode disposed on the plurality of light-emitting layers and the pixel defining layer; an encapsulation layer located on the cathode; and a plurality of color filters corresponding to different colors and located on the encapsulation layer, wherein the plurality of color filters define a plurality of second openings, only one of the plurality of color filters is located in each of the plurality of second openings, and the plurality of color filters include a light blocking area, in which at least two of the plurality of color filters are overlapped in a plan view, and in a plan view, a first opening among the plurality of first openings of the pixel defining layer and one of the second openings overlapping the first opening among the plurality of second openings of the plurality of color filters have a circular shape, and the other of the first opening and the second opening has an elliptical shape.

[0018] Some of the plurality of first openings or the plurality of second openings may have an elliptical shape and include four or more major axes, and an angle formed by the major axes may be 45 degrees or less.

[0019] The elliptical shape may have an eccentricity of 0.2 to 0.85.

[0020] A first opening among the plurality of first openings and a second opening among the plurality of second openings overlapping the first opening in a plan view may have a horizontal gap greater than 0 μm and less than or equal to 20 μm.

[0021] The elliptical shape may have a planar shape merging portions of at least two elliptical shapes having different eccentricities in a plan view.

[0022] The elliptical shape may have a planar shape formed by cutting a first ellipse having a first eccentricity and a second ellipse having a second eccentricity in a first direction and then merging the cut portion of the first ellipse and the cut portion of the second ellipse.

[0023] In the light blocking region of the plurality of color filters, a blue color filter and a red color filter may overlap each other, and each of the plurality of second openings may overlap one of the blue color filter, the red color filter, and the green color filter.

[0024] The first opening may have a circular shape, and the second opening of the color filter may have an elliptical shape, and boundaries of the first opening and the second opening may contact each other in a plan view.

[0025] The first opening may have a circular shape, and the second opening of the color filter may have an elliptical shape, and the first opening may be located inside the second opening in a plan view.

[0026] The first opening may have a circular shape and the second opening of the color filter may have an elliptical shape, and a portion of the first opening may overlap with the second opening in a plan view, and a remaining portion of the first opening may overlap with light blocking regions of the plurality of color filters in a plan view.

[0027] The first opening may have an elliptical shape, and the second opening of the color filter may have a circular shape.

[0028] According to an embodiment, at least one of the opening of the pixel defining layer and the opening of the color filter may have an elliptical shape or a similar shape, the angle of the major axis of the ellipse is arranged in various ways, the eccentricity of the ellipse is formed in various ways, or the ellipse is formed in a plurality of shapes. By having a combined structure combining ellipses having eccentricities, color separation of external light can be effectively reduced or a constant diffraction pattern can be generated regardless of the angle.

[0029] According to the embodiment, by using a black pixel defining layer instead of a polarizer to separate the light emitting layers from each other, the diffraction pattern may be reduced by lowering the reflectivity at which external light is reflected.

[0030] In addition, according to an embodiment, a plurality of color filters are stacked without forming a black light blocking layer on the front side of the display panel to prevent external light from being reflected or transmitted, thereby reducing a manufacturing process and manufacturing cost while reducing a diffraction pattern of external light or reducing color separation of external light. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic perspective view illustrating a use state of a display device according to an exemplary embodiment.

[0032] Figure 2 is an exploded perspective view of a display device according to an embodiment.

[0033] Figure 3 is a block diagram of a display device according to an embodiment.

[0034] Figure 4 is a perspective view schematically showing a light emitting display device according to another embodiment.

[0035] Figure 5 is an enlarged plan view of a partial region of a light emitting display device according to an embodiment.

[0036] Figure 6 is a schematic cross-sectional view of a display panel according to an embodiment.

[0037] Figures 7 to 9 is a plan view of a portion of a display panel according to an embodiment.

[0038] Fig.10is a plan view of a portion of a display panel according to a comparative example.

[0039] Fig.11 is a comparison example and Figures 7 to 9 Photograph of the reflective properties of an example.

[0040] Fig.12 is a diagram showing the reflection characteristics of a light-emitting display device according to angles.

[0041] Fig.13 are diagrams showing various angle arrangements according to an embodiment.

[0042] Fig.14 It is a photo of the reflective properties according to the angle.

[0043] Fig.15 and Fig.16 is a diagram showing reflection characteristics according to eccentricity.

[0044] Fig.17 and Fig.18 FIG. 1 is a diagram showing a structure in which ellipses having different eccentricities are merged.

[0045] Fig.19 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0046] Fig. 20 is a plan view of a portion of a display panel according to another embodiment.

[0047] Fig.21 and Fig. 22 is a diagram showing reflection characteristics according to eccentricity.

[0048] Figure 23 to Figure 25 is a plan view of a portion of a display panel according to another embodiment.

[0049] Fig.26 is a plan view showing a configuration of a unit pixel of one of the display panels according to the embodiment.

[0050] Fig. 27 and Fig.28 is a plan view of a portion of a display panel according to another embodiment.

[0051] Fig.29 is a comparison example and Fig.28 Photograph of the reflective properties of an example.

[0052] Fig.30 yes Fig. 27 A plan view of a portion of a display panel of an embodiment arranged at various angles.

[0053] Fig.31 and Fig.32 is a plan view of a portion of a display panel according to another embodiment.

[0054] Fig.33 and Fig.34 is a plan view of a portion of a display panel according to another embodiment.

[0055] Fig.35 is a comparison example and Fig.34 Photograph of the reflective properties of an example.

[0056] Fig.36 and Fig.37 is a plan view of a portion of a display panel according to another embodiment.

[0057] Fig.38 FIG. 1 is a diagram showing a structure in which ellipses having different eccentricities are merged.

[0058] Fig.39 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to another embodiment.

[0059] Fig.40 is a plan view of a portion of a display panel according to another embodiment.

[0060] Fig.41 is an enlarged cross-sectional view of a partial region of a light emitting display device according to another embodiment.

[0061] Fig.42 is a plan view of a portion of a display panel according to another embodiment.

[0062] Fig.43 is a graph showing transmittance according to wavelength of a color filter.

[0063] Fig.44 is a plan view of a portion of a display panel according to another embodiment.

[0064] Fig.45 is a cross-sectional view of a light emitting display device according to another embodiment. DETAILED DESCRIPTION

[0065] Hereinafter, with reference to the accompanying drawings, various embodiments will be described in detail so that those skilled in the art can easily implement the present invention.

[0066] The invention may be embodied in many different forms and is not limited to the embodiments described herein.

[0067] In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

[0068] Furthermore, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, so the present invention is not necessarily limited to what is shown.

[0069] In the drawings, the thickness is exaggerated in order to clearly indicate various layers and regions.

[0070] In the drawings, the thicknesses of some layers and regions are exaggerated for convenience of explanation.

[0071] Additionally, when a part such as a layer, film, region, panel, component, etc. is referred to as being “on” or “on” another part, it not only means when it is “directly on” the other part, but also means when there is another part in between.

[0072] In contrast, when a part is said to be "right on top of" another part, it means that there is no other part in between.

[0073] Furthermore, “on” or “over” a reference portion means located above or below the reference portion, and does not necessarily mean located “on” or “over” it in a direction opposite to gravity.

[0074] It will be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings herein, the first element, component, region, layer or part discussed below may be referred to as a second element, component, region, layer or part.

[0075] The terms used herein are only used to describe the purpose of specific embodiments, and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, "one", "one (kind / person)", "the (described)" and "at least one (kind / person)" do not represent the limitation of quantity, and are intended to include both the singular and the plural. For example, unless the context clearly indicates otherwise, "an element" has the same meaning as "at least one element". "At least one (kind / person)" will not be interpreted as "one" or "one (kind / person)". "Or" means "and / or". As used herein, the term "and / or" includes any combination and all combinations of one or more related listed items. Throughout disclosure, expression "at least one (kind / person) in a, b and c" indicates only a, only b, only c, both a and b, both a and c, both b and c, all of a, b and c or its variant.

[0076] Furthermore, throughout the specification, when a part is referred to as “comprising” a certain element, unless particularly stated otherwise, it means that it may also include other elements, rather than excluding other elements.

[0077] Furthermore, throughout the specification, when "on a plane" (i.e., in a plan view) is mentioned, this means when the target portion is viewed from above (i.e., the thickness direction (DR3) of the substrate 110), 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. Furthermore, "planar shape" means the shape of the target in a plan view.

[0078] Furthermore, throughout the specification, when “connected” is used, this means not only when two or more components are directly connected, but also when two or more components are indirectly connected through other components, they are physically or electrically connected, and includes the case where parts that are referred to by different names according to positions or functions but are actually integrated are connected.

[0079] In addition, throughout the specification, when a part such as a wiring, layer, film, region, board or component is referred to as "extending in the first direction or the second direction", this not only means a straight line shape extending in that direction, but means a structure extending along the first direction or the second direction as a whole and also includes a structure that is bent at some parts, a structure with a zigzag structure or a structure with a curved structure.

[0080] In addition, electronic devices (for example, mobile phones, TVs, monitors, laptop computers, etc.) that include the display devices, display panels, etc. described in the specification or the display devices, display panels, etc. manufactured by the manufacturing methods described in the specification are not excluded from the scope of rights of this specification.

[0081] Next, we will explain Figures 1 to 3 Schematic structure of a display device.

[0082] Figure 1 is a schematic perspective view showing a use state of a display device according to an embodiment, Figure 2 is an exploded perspective view of a display device according to an embodiment, and Figure 3 is a block diagram of a display device according to an embodiment.

[0083] Reference Figure 1The display device 1000 according to the embodiment is a device for displaying a moving image or a still image, and can be used in a mobile phone, a smart phone, or a tablet personal computer. It can be used as a display screen for portable electronic devices (such as communication terminals, electronic notebooks, electronic books, portable multimedia players ("PMP"), navigation, ultra mobile PCs ("UMPC")), as well as televisions, notebook computers, monitors, billboards, Internet of Things ("IOT") devices, etc.

[0084] In addition, the display device 1000 according to the embodiment is mounted on a wearable device such as a smart watch, a watch phone, a glasses type display, and a head mounted display (HMD).

[0085] In addition, the display device 1000 according to an embodiment can be used as a dashboard of a car, a central information display ("CID") placed on the central instrument panel or dashboard of a car, a room mirror display instead of a side-view mirror of a car, or a display placed behind the front seat in a car for rear-seat entertainment.

[0086] For ease of explanation, Figure 1 The display device 1000 used as a smart phone is shown.

[0087] 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 .

[0088] 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.

[0089] Images can include static images as well as dynamic images.

[0090] In this embodiment, the front (or top) surface and the rear (or bottom) surface of each member are defined based on the direction in which an image is displayed.

[0091] 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.

[0092] A separation distance between the front surface and the rear surface in the third direction DR3 may correspond to a thickness of the display panel in the third direction DR3.

[0093] The display device 1000 according to one embodiment may detect a user's input applied from the outside (refer to Figure 1 hand in the middle).

[0094] The user's input may include various types of external inputs, such as a part of the user's body, light, heat, or pressure.

[0095] In one embodiment, the user's input is shown with the user's hand applied to the front.

[0096] However, the present invention is not limited thereto.

[0097] The user's input may be provided in various forms, and the display apparatus 1000 may also detect the user's input applied to the side or rear of the display apparatus 1000 according to the structure of the display apparatus 1000 .

[0098] Reference Figure 1 and Figure 2 , the display device 1000 may include a cover window WU, a housing HM, a display panel DP (or a light-emitting display panel), and an optical element ES.

[0099] In one embodiment, the cover window WU and the housing HM may be merged to form the exterior of the display device 1000 .

[0100] The cover window WU may include an insulating panel.

[0101] For example, the cover window WU may be made of glass, plastic, or a combination thereof.

[0102] The front of the cover window WU may define the front of the display device 1000 .

[0103] The transmission area TA may be an optically transparent area.

[0104] For example, the transmission area TA may be an area having a visible light transmittance of about 90% or more.

[0105] The blocking area BA may define the shape of the transmission area TA.

[0106] The blocking area BA is adjacent to the transmission area TA and may surround the transmission area TA.

[0107] The blocking area BA may be an area having relatively low light transmittance compared with the transmission area TA.

[0108] The blocking area BA may include an opaque material that blocks light.

[0109] The barrier area BA may have a predetermined color.

[0110] 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 or coloring the transparent substrate.

[0111] The display panel DP may include display pixels PX (or pixels) displaying an image and a driver 50 , and the display pixels PX are located in the display area DA and the assembly area EA.

[0112] The display panel DP may include a front surface including a display area DA and a peripheral area PA.

[0113] In one embodiment, the display area DA and the assembly area EA are areas displaying images including pixels PX, and at the same time, the touch sensor may be located in an upper direction of the pixel PX in the third direction DR3, and the area where the touch sensor is located may be an area for detecting external input.

[0114] The transmission area TA of the cover window WU may at least partially overlap the display area DA and the assembly area EA of the display panel DP.

[0115] For example, the transmission area TA may overlap the front surface of the display area DA and the front surface of the assembly area EA, or may overlap at least a portion of the display area DA and the assembly area EA.

[0116] Therefore, the user may view an image through the transmissive area TA or provide an external input based on the image.

[0117] However, the present invention is not limited thereto.

[0118] For example, an area where an image is displayed and an area where an external input is detected may be separated from each other.

[0119] The peripheral area PA of the display panel DP may at least partially overlap the blocking area BA of the cover window WU.

[0120] The peripheral area PA may be an area covered by the barrier area BA.

[0121] The peripheral area PA is adjacent to the display area DA and may surround the display area DA.

[0122] No image is displayed in the peripheral area PA, and a driving circuit or driving wiring for driving the display area DA may be disposed.

[0123] The peripheral 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.

[0124] exist Figure 2 In the embodiment of the present invention, the first peripheral area PA1 is located on three sides of the display area DA, and the second peripheral area PA2 is located on the remaining side of the display area DA.

[0125] In one embodiment, the display panel DP may be assembled in a flat state with the display area DA, the assembly area EA, and the peripheral area PA facing the cover window WU.

[0126] However, the present invention is not limited thereto.

[0127] A portion of the peripheral area PA of the display panel DP may be bent.

[0128] At this time, a portion of the peripheral area PA is directed toward the rear 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 In the embodiment, the second peripheral area PA2 may be bent and placed behind the display area DA and then assembled.

[0129] In addition, the assembly area EA of the display panel DP may include a first assembly area EA1 and a second assembly area EA2.

[0130] The first assembly area EA1 and the second assembly area EA2 may be at least partially surrounded by the display area DA.

[0131] The first assembly area EA1 and the second assembly area EA2 are illustrated as being spaced apart from each other, but are not limited thereto and may be at least partially connected.

[0132] The first component area EA1 and the second component area EA2 may be areas where optical elements using infrared rays, visible rays, or sounds are disposed (see Figure 2 ES in; hereinafter referred to as a component) region.

[0133] The display area (DA; hereinafter also referred to as a main display area) and the element area EA are formed with a plurality of light emitting diodes and a plurality of pixel circuit parts that generate a light emitting current and transmit the light emitting current to each of the plurality of light emitting diodes.

[0134] Here, one light emitting diode and one pixel circuit portion are referred to as a pixel PX.

[0135] One pixel circuit portion and one light emitting diode may be formed in the display area DA and the assembly area EA in a one-to-one ratio.

[0136] The first assembly area EA1 may include a transmission portion through which light and / or sound may pass and a display portion including a plurality of pixels PX.

[0137] The transmission portion is located between adjacent pixels PX, and is composed of a layer through which light and / or sound can pass.

[0138] The transmission portion may be located between adjacent pixels PX, and according to an embodiment, a layer that does not transmit light of a specific wavelength (eg, visible light) may overlap the first component area EA1.

[0139] The number of pixels per unit area (hereinafter referred to as resolution) of the pixels PX included in the display area DA (hereinafter 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 referred to as first component pixels) may be the same.

[0140] The second component area EA2 includes an area composed of a transparent layer so that light can pass through (hereinafter also referred to as a light-transmitting area), and the light-transmitting area does not have a conductive layer or a semiconductor layer, but instead includes a light-blocking material, for example, a pixel defining layer and / or at least two color filters can be formed to include an opening overlapping a position corresponding to the second component area EA2 and can have a structure that does not block light.

[0141] 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 ​​the normal pixels PX included in the display area DA.

[0142] As a result, the resolution of the second assembly area EA2 may be lower than the resolution of the display area DA.

[0143] Reference Figure 3 , the display panel DP may further include a touch sensor TS in addition to the display area DA including the display pixels PX.

[0144] The display panel DP includes pixels PX as components generating an image and may be visible to a user from the outside through the transmissive area TA.

[0145] In addition, the touch sensor TS may be located on the top of the pixel PX and may detect an external input.

[0146] The touch sensor TS may detect an external input provided to the cover window WU.

[0147] Refer again Figure 2 , the second peripheral area PA2 may include a bent portion.

[0148] The display area DA and the first peripheral area PA1 may have 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 display area DA and the first peripheral area PA1 in the flat state to pass through the curved portion and then be in the flat state again.

[0149] As a result, at least a portion of the second peripheral area PA2 may be bent and assembled to be located at the rear side of the display area DA.

[0150] When at least a portion of the second peripheral area PA2 is assembled, it overlaps the display area DA in a plane, so the blocking area BA of the display device 1000 may be reduced.

[0151] However, the present invention is not limited thereto.

[0152] For example, the second peripheral area PA2 may not be bent.

[0153] The driver 50 may be mounted on the bent portion or on one of both sides of the bent portion in the second peripheral area PA2.

[0154] The driver 50 may be provided in the form of a chip.

[0155] The driver 50 is electrically connected to the display area DA and the assembly area EA, and may transmit electrical signals to the pixels PX in the display area DA and the assembly area EA.

[0156] For example, the driver 50 may provide data signals to the pixels PX arranged in the display area DA.

[0157] 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 assembly area EA.

[0158] Meanwhile, the driver 50 may include various circuits other than the above-mentioned circuits or may be designed to provide various electrical signals to the display area DA.

[0159] Meanwhile, the display device 1000 may have a pad (also referred to as a "pad" or "soldering pad") portion at the end of the second peripheral area PA2, and be electrically connected to a flexible printed circuit board (FPCB) including a driving chip through the pad portion.

[0160] 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 supplying power.

[0161] According to an embodiment, a rigid printed circuit board (PCB) may be used instead of a flexible printed circuit board.

[0162] The optical element ES may be disposed under the display panel DP.

[0163] The optical element ES may include a first optical element ES1 overlapping the first assembly area EA1 and a second optical element ES2 overlapping the second assembly area EA2.

[0164] The first optical element ES1 may use infrared rays, and in this case, the first component area EA1 may be a layer that does not transmit light such as visible light, and the first optical element ES1 overlaps the first component area EA1.

[0165] The first optical element ES1 may be an electronic element using light or sound.

[0166] For example, the first optical element ES1 is a sensor that receives and uses light (such as an infrared sensor), a sensor that outputs and detects light or sound to measure distance or recognize fingerprints, etc., a small lamp that outputs light, or it can be a speaker that outputs sound, etc.

[0167] In the case of an electronic component using light, it is obvious that light of various wavelength bands such as visible light, infrared light, and ultraviolet light can be used.

[0168] The second optical element ES2 is at least one of a camera, an IR camera, a dot projector, an IR illuminator, and a time-of-flight sensor.

[0169] Reference Figure 3 , 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.

[0170] 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.

[0171] Figure 3 The display pixels PX and the touch sensors TS located in the display area DA are shown among the configuration of the display panel DP.

[0172] The power module PM may supply power required for overall operations of the display apparatus 1000 .

[0173] The power module PM may include a conventional battery module.

[0174] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for operating the display device 1000 .

[0175] 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).

[0176] The first electronic module EM1 may include a control module CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF.

[0177] Some of the 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 thereto.

[0178] The control module CM may control the overall operation of the display apparatus 1000 .

[0179] The control module CM may be a microprocessor.

[0180] For example, the control module CM activates or deactivates the display panel DP.

[0181] The control module CM may 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.

[0182] The wireless communication module TM may send / receive wireless signals to / from other terminals using Bluetooth or Wi-Fi lines.

[0183] The wireless communication module TM may send / receive voice signals using a general communication line.

[0184] The wireless communication module TM includes a transmitter TM1 that modulates and transmits a signal to be transmitted and a receiver TM2 that demodulates a received signal.

[0185] The image input module IIM may process the video signal and convert it into video data that may be displayed on the display panel DP.

[0186] 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.

[0187] 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.

[0188] The second electronic module EM2 may include an audio 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. Figure 1 and Figure 2 As shown in , it may be located behind the display panel DP.

[0189] The optical element ES may include a light emitting module LM, a light receiving module LRM, and a camera module CMM.

[0190] In addition, the second electronic module EM2 is directly mounted on the main board, mounted on a separate board and electrically connected to the display panel DP through a connector (not shown), or connected to the first electronic module EM1.

[0191] The audio output module AOM may convert audio data received from the wireless communication module TM or audio data stored in the memory MM and output it to the outside.

[0192] The light emitting module LM may generate and output light.

[0193] The light emitting module LM can output infrared rays.

[0194] For example, the light emitting module LM may include an LED device.

[0195] For example, the light receiving module LRM may detect infrared light.

[0196] The light receiving module LRM may be activated upon detecting infrared rays above a certain level.

[0197] The light receiving module LRM may include a CMOS sensor.

[0198] After the infrared light generated in the light emitting module LM is output, it is reflected by an external object (eg, a finger or face of a user), and the reflected infrared light may be incident on the light receiving module LRM.

[0199] The camera module CMM may capture external images.

[0200] In one embodiment, the optical element ES may additionally include a light detection sensor or a heat detection sensor.

[0201] The optical element ES may detect an external object received through the front face or provide a sound signal such as voice to the outside through the front face.

[0202] Furthermore, the optical element ES may include a plurality of components and is not limited to any one embodiment.

[0203] Refer again Figure 2 , the housing HM can be combined with the cover window WU.

[0204] A cover window WU may be provided at the front of the housing HM.

[0205] The housing HM may be combined with the cover window WU to provide a predetermined accommodation space.

[0206] 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.

[0207] The housing HM may include a material having relatively high rigidity.

[0208] For example, the housing HM may include a plurality of frames and / or plates made of glass, plastic, or metal, or a combination thereof.

[0209] The housing HM may stably protect components of the display device 1000 accommodated in the internal space from external impact.

[0210] In the following, we will Figure 4 Let's look at the structure of a display device 1000 according to another embodiment.

[0211] Figure 4 is a perspective view schematically showing a light emitting display device according to another embodiment.

[0212] Descriptions of components identical to those described above will be omitted, and Figure 4 The embodiment shows a foldable display device in which the display device 1000 is folded by a folding axis FAX.

[0213] Reference Figure 4 In one embodiment, the display device 1000 may be a foldable display device.

[0214] The display apparatus 1000 may be folded outward or inward based on a folding axis FAX.

[0215] When folded outward based on the folding axis FAX, the display surface of the display device 1000 is positioned outside in the third direction DR3 so that images can be displayed in two directions.

[0216] If it is folded inwardly based on the folding axis FAX, the display surface may not be seen from the outside.

[0217] In one embodiment, the display device 1000 may include a display area DA, an assembly area EA, and a peripheral area PA.

[0218] 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.

[0219] 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.

[0220] At this time, when folded outward based on the folding axis FAX, the first display area DA1 - 1 and the second display area DA1 - 2 are located on both sides in the third direction DR3 , and this allows images to be displayed in both directions.

[0221] Furthermore, when 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.

[0222] Figure 5is an enlarged plan view of a partial region of a light emitting display device according to an embodiment.

[0223] Figure 5 A portion of a light emitting display panel DP of a light emitting display device according to an embodiment is shown and is illustrated using a display panel for a mobile phone.

[0224] The display area DA is located in front of the light-emitting display panel DP, and the assembly area EA is also located within the display area DA.

[0225] Specifically, the assembly area EA may include a first assembly area EA1 and a second assembly area EA2.

[0226] In addition, Figure 5 In the embodiment of FIG. 1 , the first assembly area EA1 is positioned adjacent to the second assembly area EA2 .

[0227] exist Figure 5 In the embodiment of the present invention, the first component area EA1 is positioned to the left of the second component area EA2.

[0228] The location and number of the first assembly areas EA1 may vary depending on the embodiment.

[0229] exist Figure 5 In the embodiment, the second optical element ES2 corresponding to the second component area EA2 may be a camera, and the first optical element ES1 corresponding to the first component area EA1 may be an optical sensor.

[0230] The display area DA is formed with a plurality of light emitting diodes and a plurality of pixel circuit parts that generate a light emitting current and transmit the light emitting current to each of the plurality of light emitting diodes.

[0231] Here, one light emitting diode and one pixel circuit portion are referred to as a pixel PX.

[0232] In the display area DA, one pixel circuit portion and one light emitting diode are formed in a one-to-one arrangement.

[0233] The display area DA is also referred to as a “normal display area” hereinafter.

[0234] Despite Figure 5 The structure of the light-emitting display panel DP below the cutting line is not shown in FIG. 1 , but the display area DA may be located below the cutting line.

[0235] The light emitting display panel DP according to the embodiment may be largely divided into a lower panel layer and an upper panel layer.

[0236] The lower panel layer is a portion where the light emitting diode and the pixel circuit portion constituting the pixel PX are located, and may even include a packaging layer covering it (see Figure 6 of 400).

[0237] That is, the lower panel layer is from the base (see Figure 6 110) to the encapsulation layer by the anode (see Figure 6 Anode in), pixel limiting layer (see Figure 6 380 in), luminescent layer (see Figure 6 EML in) and spacers (see Figure 6 385) and it also includes a functional layer (see Figure 6 FL in), cathode (see Figure 6 The cathode in the anode) and the insulating layer, semiconductor layer and conductive layer between the substrate and the anode.

[0238] Meanwhile, the upper panel layer is a portion located above the packaging layer and includes a sensing insulating layer (see Figure 6 501, 510 and 511 in FIG. 5 ) and a plurality of sensing electrodes capable of detecting touch (see FIG. Figure 6 540 and 541 in ), and it may include a color filter (see Figure 6 230R, 230G and 230B in), planarization layer (see Figure 6 550) etc.

[0239] The first component area EA1 may be composed only of a transparent layer that allows light to penetrate, and it may not have a conductive layer or a semiconductor layer that allows light to pass through. The first component area EA1 may have an optical sensor area on the lower panel layer, and in the pixel defining layer of the lower panel layer of the color filter and the light blocking area LB where at least two color filters of the upper panel layer are stacked, an opening (also referred to as an additional opening) may be formed at a position corresponding to the first component area EA1, so the first component area EA1 may have a structure that does not block light.

[0240] Meanwhile, even if the optical sensor area is located in the lower panel layer, it may be the display area DA instead of the first assembly area EA1 if there is no corresponding opening in the upper panel layer.

[0241] One first component area EA1 may include a plurality of adjacent optical sensor areas, and in this case, pixels PX adjacent to the optical sensor areas may be included in the first component area EA1.

[0242] Meanwhile, when the first optical element ES1 corresponding to the first component area EA1 uses infrared rays instead of visible rays, the first component area EA1 may have at least two color filters that block overlapping visible rays and may overlap with the light blocking area of ​​the existing color filter.

[0243] The second component area EA2 may include second component pixels PX and a light-transmitting region, and a space between adjacent second component pixels PX may be a light-transmitting region.

[0244] Although not in Figure 5 , but the peripheral area may be further located outside the display area DA.

[0245] In addition, despite Figure 5 A display panel DP for a mobile phone is shown, but the present embodiment may be applied to any display panel in which an optical element may be located behind the display panel DP, and it may also be a flexible display device.

[0246] In the case of a foldable display device among the flexible display devices, the second assembly area EA2 and the first assembly area EA1 may be formed at the same Figure 5 The location is in different locations.

[0247] In the following, reference will be made to Figure 6 The structure of the light emitting display panel DP according to the embodiment is described.

[0248] Figure 6 is a schematic cross-sectional view of a display panel according to an embodiment.

[0249] The light-emitting display panel DP according to one embodiment can display images using light-emitting diodes and color filters on the substrate 110, can detect touch by including a plurality of sensing electrodes 540 and 541, and can also generate light having color characteristics of the color filters 230R, 230G, 230B by setting color filters 230R, 230G, 230B on the light-emitting diodes.

[0250] In an embodiment, a light blocking layer having a black color and blocking visible light may not be formed, and at least two color filters may be stacked to block visible light instead of the light blocking layer.

[0251] The area that blocks visible light by stacking at least two color filters is called the "light blocking area" of the color filter. Figure 6 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.

[0252] The order in which the color filters are stacked may vary according to the embodiment.

[0253] Furthermore, according to one embodiment, a polarizer is not formed on the front surface of the light emitting display panel DP, and instead, a pixel defining layer 380 is formed of a black organic material, and at least two color filters are formed on an upper portion of the pixel defining layer 380. By forming a light blocking region LB where the color filters are overlapped, even if external light enters the inside, it is possible to prevent external light from being reflected from the anode Anode and the like and transmitted to the user.

[0254] The details of the light emitting display panel DP according to the embodiment are as follows.

[0255] The substrate 110 may include a material that has a rigid property and does not bend, such as glass, or may include a flexible material that can bend, such as plastic or polyimide.

[0256] A plurality of thin film transistors are formed on the substrate 110, but Figure 6 It is omitted in the figure, and only the organic layer 180 covering the thin film transistor is shown.

[0257] One pixel is formed with a light emitting diode and a pixel circuit portion in which a plurality of transistors and capacitors are formed to transfer a light emitting current to the light emitting diode.

[0258] exist Figure 6 , the pixel circuit portion is not shown, and the structure of the pixel circuit portion may vary depending on the embodiment.

[0259] exist Figure 6 In FIG. 1 , the organic layer 180 covering the pixel circuit portion is first shown.

[0260] A light emitting diode including an anode Anode, a light emitting layer EML, and a cathode Cathode is located on the organic layer 180 .

[0261] The anode Anode may be composed of a single layer including a transparent conductive oxide film and a metal material or a multilayer including these.

[0262] The transparent conductive oxide film may include 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 silver (Ag), molybdenum (Mo), copper (Cu), gold (Au), and aluminum (Al).

[0263] The light emitting layer EML may be formed of an organic light emitting material, and adjacent light emitting layers EML may display different colors.

[0264] Meanwhile, according to the embodiment, each light emitting layer EML may display the same color light due to the color filters 230R, 230G, and 230B located at the top.

[0265] According to 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 EML are stacked.

[0266] The pixel defining layer 380 is located on the organic layer 180 and the anode Anode, an opening (OP; hereinafter referred to as “first opening”) is defined in the pixel defining layer 380, the first opening OP overlaps a portion of the anode Anode, and the light emitting layer EML overlaps a portion of the anode Anode exposed by the first opening OP.

[0267] The light emitting layer EML may be located only within the first opening OP of the pixel defining layer 380 and separated from the adjacent light emitting layer EML by the pixel defining layer 380 .

[0268] The pixel defining layer 380 may be formed of a negative black organic material.

[0269] 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 (e.g., chromium nitride), and the like.

[0270] 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.

[0271] Because a negative black organic material is used, it can have the property of removing the portion covered by the mask.

[0272] The spacer 385 is formed on the pixel defining layer 380 .

[0273] The spacer 385 includes a first portion 385 - 1 located in a high and narrow region and a second portion 385 - 2 located in a low and wide region.

[0274] exist Figure 6 , the first portion 385 - 1 and the second portion 385 - 2 are shown as being separated by a dashed line within the spacer 385 .

[0275] Here, the first portion 385 - 1 may serve to ensure rigidity against pressing pressure by enhancing scratching strength.

[0276] The second portion 385 - 2 may be used to assist the contact between the pixel defining layer 380 and the functional layer FL.

[0277] The first portion 385 - 1 and the second portion 385 - 2 are made of the same material, and may be made of a positive photosensitive organic material (eg, photosensitive polyimide (PSPI)).

[0278] Because it has positive properties, it can remove the parts not covered by the mask.

[0279] The spacer 385 is transparent so that light can be transmitted and / or reflected.

[0280] The pixel defining layer 380 may be formed in a negative type, and the spacer 385 may be formed in a positive type. According to an embodiment, they may include the same material.

[0281] 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 in which the edge of the second portion 385-2 is 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.

[0282] The second portion 385 - 2 covers even the upper surface of the pixel defining layer 380 where the first portion 385 - 1 is not positioned, thereby reinforcing the adhesive property between the pixel defining layer 380 and the functional layer FL.

[0283] In this embodiment, the spacer 385 is located only in the area overlapping with the light blocking area LB of the color filter that blocks visible light by stacking at least two color filters, so that when viewed from the front of the display panel DP, the spacer 385 can be invisible due to being obscured by the light blocking area LB of the color filter.

[0284] The functional layer FL is located on the spacer 385 and the exposed pixel defining layer 380 and is formed on the entire surface of the light emitting display panel DP or in some areas. For example, the second component may be formed in all areas except the light-transmitting area of ​​the second component area EA2.

[0285] 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.

[0286] That is, the hole injection layer, hole transport layer, light-emitting layer EML, electron transport layer, electron injection layer and cathode Cathode are sequentially located on the anode Anode, the hole transport layer can be located below the light-emitting layer EML, and the electron transport layer and electron injection layer can be located on the top of the light-emitting layer EML.

[0287] The spacer 385 may reduce a defect rate due to pressure by increasing scratch resistance of the light-emitting display panel DP, and according to an embodiment, the spacer 385 may increase adhesion with the functional layer FL located on an upper portion of the spacer 385 to prevent moisture and air from being injected from the outside.

[0288] Furthermore, high adhesive strength has an advantage of eliminating the problem of poor adhesiveness between layers when folded and unfolded if the light-emitting display panel DP has flexible characteristics.

[0289] The cathode can be formed as a light-transmitting electrode or a reflective electrode.

[0290] According to an embodiment, the cathode may be a transparent or translucent electrode and may be lithium (Li), calcium (Ca), lithium fluoride / calcium (LiF / Ca), lithium fluoride / aluminum (LiF / Al), aluminum (Al), silver (Ag), magnesium (Mg), and compounds or mixtures thereof formed as a metal thin film having a small work function.

[0291] In addition, a transparent conductive oxide (TCO) film (such as an indium tin oxide (ITO) film, an indium zinc oxide (IZO) film, a zinc oxide (ZnO) film, or an indium oxide (In 2 O 3 ) film) can be further arranged on the metal film.

[0292] The cathode Cathode may be integrally formed over the entire surface of the light-emitting display panel DP.

[0293] The encapsulation layer 400 is located on the cathode.

[0294] The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and Figure 6 It has a three-layer structure including a first inorganic encapsulation layer 401 , an organic encapsulation layer 402 , and a second inorganic encapsulation layer 403 .

[0295] The encapsulation layer 400 may serve to protect the light emitting layer EML made of an organic material from moisture or oxygen that may enter from the outside.

[0296] According to an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[0297] Sensing insulation layers 501 , 510 , and 511 and a plurality of sensing electrodes 540 , 541 are located on the encapsulation layer 400 for touch detection.

[0298] exist Figure 6 In the embodiment of FIG. 5 , two sensing electrodes 540 and 541 are used to detect touch in a capacitive type, but according to an embodiment, only one sensing electrode may be used to detect touch in a self-capacitive type.

[0299] The plurality of sensing electrodes 540 and 541 may be insulated from the second sensing insulating layer 510 disposed therebetween, the lower sensing electrode 541 being located on the first sensing insulating layer 501, and the second sensing insulating layer 510 being disposed between the plurality of sensing electrodes 540 and 541, the upper sensing electrode 540 being located on the second sensing insulating layer 510, and the upper sensing electrode 540 being covered by the third sensing insulating layer 511.

[0300] The plurality of sensing electrodes 540 and 541 may be electrically connected through the openings located in the second sensing insulating layer 510 .

[0301] Here, the sensing electrodes 540 and 541 may include metal or metal alloys such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), and tantalum (Ta), and may be composed of a single layer or multiple layers.

[0302] The color filters 230R, 230G, and 230B are positioned on the third sensing insulating layer 511 .

[0303] The color filters 230R, 230G, 230B include a red color filter 230R that allows red light to pass therethrough, a green color filter 230G that allows green light to pass therethrough, and a blue color filter 230B that allows blue light to pass therethrough.

[0304] Each of the color filters 230R, 230G, and 230B may be positioned to overlap the anode Anode of the light emitting diode on a plane.

[0305] Since light emitted from the light emitting layer EML may be changed into a corresponding color when it passes through the color filter, all light emitted from the light emitting layer EML may have the same color.

[0306] However, the light emitting layer EML emits light of a different color, and the displayed color can be enhanced by passing through a color filter of the same color.

[0307] According to an embodiment, the color filters 230R, 230G, and 230B may be replaced with a color conversion layer or may further include a color conversion layer.

[0308] The color conversion layer may include quantum dots.

[0309] exist Figure 6 In the embodiment, a light blocking layer which is black and blocks visible light is not formed, and a light blocking region LB of a color filter formed by stacking at least two color filters is formed instead of the light blocking layer.

[0310] exist Figure 6 In the embodiment of FIG. 4 , the light blocking region LB of the color filter includes a blue color filter 230B, a red color filter 230R, and a green color filter 230G which are sequentially stacked.

[0311] The order in which the color filters are stacked may vary according to the embodiment.

[0312] The light blocking region LB where at least two color filters of the color filter are overlapped may be positioned to overlap the sensing electrodes 540 and 541 in a plane, and may be positioned not to overlap the anode Anode in a plane.

[0313] This is to ensure that the anode electrode Anode and the light emitting layer EML capable of displaying an image are not shielded by the light blocking region LB of the color filter and the sensing electrodes 540 and 541 .

[0314] Reference Figure 6 , the three filter-overlapping light blocking regions LB of the color filter are located only in the region overlapping the pixel defining layer 380 , and one side of the light blocking region LB of the color filter is arranged inward from the corresponding side of the pixel defining layer 380 .

[0315] Only one color filter may be located in a region other than the light blocking region LB of the color filter, and transmits light of a color of the corresponding color filter to form a light transmitting region of the color filter.

[0316] Hereinafter, because light is transmitted, a light-transmitting area of ​​a color filter where only one color filter is positioned is referred to as a "second opening OPCF" of the color filter, and the second opening OPCF is an opening in a light-blocking area LB of the color filter where at least two color filters are stacked, and the opening in the light-blocking area LB may correspond to an area where only one color filter is positioned.

[0317] The second opening OPCF is formed to have an area greater than the first opening OP of the pixel defining layer 380 , and the first opening OP of the pixel defining layer 380 on a plane may be located within the second opening OPCF of the color filter.

[0318] In addition, one side of the spacer 385 is disposed inwardly at a predetermined distance g1 from a corresponding side of the pixel defining layer 380 , and the spacer 385 is also disposed at one side of the light blocking region LB of the color filter.

[0319] As a result, when viewed from the front of the display panel DP, the spacer 385 may not be visible because the spacer 385 is shielded by the light blocking region LB of the color filter.

[0320] When external light is incident, it may pass through the second openings OPCF of the color filter and then be reflected on the sidewalls of the first openings OP of the pixel defining layer 380 .

[0321] The sidewall of the first opening OP of the pixel defining layer 380 is curved, and color separation occurs according to the position of reflection, so that the reflected light may appear in various colors such as a rainbow.

[0322] Since such color-separated reflected light may be easily seen by the user and deteriorate the display quality, in an embodiment, as in Figure 7 In the embodiment, the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 have an elliptical shape, and the direction of the elliptical shape or the eccentricity of the elliptical shape is arranged in various ways to reduce color separation or allow visual recognition of white reflected light.

[0323] Meanwhile, according to the embodiment, it may be formed to have a shape similar to an ellipse instead of an ellipse, and its direction or eccentricity may be changed in various ways.

[0324] In this regard, this will be explained in more detail below.

[0325] A planarization layer 550 covering the color filters 230R, 230G, and 230B is located on the color filters 230R, 230G, and 230B.

[0326] The planarization layer 550 serves to planarize the upper surface of the light-emitting display panel DP, 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 phenol resin.

[0327] According to an embodiment, a low-refractive layer and an additional planarizing layer may be further positioned on the planarizing layer 550 to improve the front visibility and light output efficiency of the display panel DP.

[0328] The light may be refracted by the low refractive layer and the additional planarizing layer having a high refractive property and emitted toward the front.

[0329] In this case, according to an embodiment, the planarization layer 550 may be omitted, and the low-refractive layer and the additional planarization layer may be directly located on the color filter.

[0330] In this embodiment, a polarizer is not included on top of the planarization layer 550 .

[0331] In other words, the polarizer may prevent display quality from being deteriorated when external light is incident and reflected by the anode electrode Anode or the sidewall of the first opening OP of the pixel defining layer 380 which is visible to the user.

[0332] However, the polarizer has a disadvantage of consuming more power to display a certain brightness by reducing not only the reflection of external light but also the light emitted from the light emitting layer EML.

[0333] In order to reduce power consumption, the light-emitting display device of this embodiment may not include a polarizer.

[0334] In addition, in this embodiment, the side of the anode Anode is covered by the pixel defining layer 380 to reduce the degree of reflection from the anode Anode, and a light blocking region LB of the color filter in which at least two color filters are overlapped is also formed to block light. The light-emitting display device also includes a structure that reduces the amount of incident light and prevents degradation of display quality due to reflection.

[0335] Therefore, there is no need to separately form a polarizer in front of the light-emitting display panel DP.

[0336] In the following, it will be explained Figures 7 to 9 An embodiment in which the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 are both formed in an elliptical shape through the structure of the light emitting display panel DP formed in the display area DA.

[0337] Figures 7 to 9 is a plan view of a portion of a display panel according to an embodiment.

[0338] Figures 7 to 9 Each shows a different embodiment, and Figure 7 1 shows embodiments in which the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 are arranged at various angles, Figure 8 An embodiment in which the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 are formed at various eccentricities is shown, and Fig. 9 The second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 in embodiments in which the first opening OP of the pixel defining layer 380 has various angles and is formed at various eccentricities are illustrated.

[0339] exist Figures 7 to 9 In the figure, the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter corresponding to each light emitting layer are shown based on the light emitting layers for displaying the three primary colors of red, green and blue, respectively, and they are distinguishably shown as the first opening OPr, OPg, OPb and the second openings OPCFr, OPCFg, OPCFb.

[0340] Here, r, g, and b may correspond to red, green, and blue, respectively.

[0341] First, through Figure 7 The plan structures of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter are explained in detail.

[0342] exist Figure 7, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter each have an elliptical plane shape with the same eccentricity.

[0343] That is, the red first openings OPr, the green first openings OPg, and the blue first openings OPb of the pixel defining layer 380 may all be ellipses having the same eccentricity.

[0344] In addition, the red second openings OPCFr, the green second openings OPCFg, and the blue second openings OPCFb of the color filter may all be ellipses having the same eccentricity.

[0345] Here, the eccentricities of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter may have a value of 0.2 or more and 0.85 or less.

[0346] 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 and a minor axis.

[0347] Meanwhile, the eccentricity of an ellipse is the distance between the two foci divided by the length of the major axis.

[0348] When the eccentricity is 0, it is a circle, and when the eccentricity is 1, it forms a parabola, so an ellipse has eccentricity values ​​greater than 0 and less than 1.

[0349] The first opening OPr, OPg, OPb of one pixel defining layer 380 corresponds to the second opening OPCFr, OPCFg, OPCFb of one color filter.

[0350] That is, in each of the second openings OPCFr, OPCFg, OPCFb of the color filter, the first openings OPr, OPg, OPb of the pixel defining layer 380 correspond to the second openings OPCFr, OPCFg, OPCFb of the color filter, respectively.

[0351] The second openings OPCFr, OPCFg, OPCFb of the corresponding color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other on a plane, have a constant horizontal distance from each other, and have the corresponding second openings OPCFr, OPCFg, OPCFb of the color filters. The second openings OPCFr, OPCFg, OPCFb of the two color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may be formed in an elliptical shape having a major axis at the same angle.

[0352] Here, the horizontal spacing (or horizontal gap) between the second openings OPCFr, OPCFg, OPCFb of the color filter and the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 can be greater than 0 micrometers (μm) and less than or equal to 20μm, and in an embodiment it can be 4.5μm or greater and 10μm or less.

[0353] The horizontal gap between the second openings OPCFr, OPCFg, OPCFb of the color filter and the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 is a layer (e.g., an encapsulation layer) located between the two in the cross section, and the horizontal spacing may vary according to the thickness, and the encapsulation layer may have a thickness of about 6 μm.

[0354] At the same time, according to an embodiment, the long axis directions of the second openings OPCFr, OPCFg, OPCFb of the corresponding color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may form a certain angle due to process errors, etc., and may have an angle of 0 degrees or greater and 20 degrees or less.

[0355] exist Figure 7 In the embodiment of the present invention, the pixel defining layer 380 may have four or more major axis angles formed by each of the plurality of first openings OPr, OPg, OPb, and further, the major axis angles may be arranged at intervals of 45 degrees or less.

[0356] As an example, the specific angular relationships focusing on an embodiment having five angles are as follows.

[0357] The embodiment having five angles is formed at intervals of 36 degrees on the major axis, and has angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees for a total of five angles in the case where one major axis has 0 degrees based on the first direction DR1.

[0358] In other words, the distance between the angles of the major axis can be checked by dividing the angle of 180 degrees by 5, which is the number of directions. This is because two angles having an angle of 180 degrees in 360 degrees have substantially the same direction of the major axis of the ellipse. This can mean calculating based on 180 degrees by dividing by the number of directions.

[0359] Meanwhile, the angles formed by the major axes of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter may also have four or more angles, and the angles formed by the major axes are arranged at intervals of 45 degrees or less.

[0360] As above, the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at a specific angle of 45 degrees or less.

[0361] However, according to an embodiment, the angle formed by the major axis of each opening may be one of 45 degrees or less and may be arranged at irregular intervals.

[0362] Embodiments in which the major axes of the openings are arranged at irregular intervals may be arranged intentionally to reduce the diffraction pattern, or may be arranged at irregular intervals due to process errors.

[0363] In order to make the unit pixel including the red opening, the green opening and the blue opening have a square structure, the angle of the long axis should be divided into squares of integers (e.g., 2 2 , 3 2 , 4 2 , 5 2 etc.) corresponding numbers.

[0364] Here, the unit pixel may include one of a red opening, a green opening, and a blue opening, and a plurality of openings of one color, for example, a green opening, may be formed.

[0365] If the angles formed by the long axes of the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter are four or more angles or are arranged at intervals less than 45 degrees, color separation of external light rarely occurs, or a certain diffraction pattern or a certain color separation occurs regardless of the angle. This will be Fig.13 and Fig.14 Explained in more detail in .

[0366] At the same time, the following will describe Figure 8 Embodiment of the invention.

[0367] Figure 8 An embodiment is shown in which the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are formed in an elliptical shape having two or more different eccentricities.

[0368] According to an embodiment, each opening of the same color may be formed in an elliptical shape having an eccentricity of 2 or more and have different elliptical shapes.

[0369] Here, refer to Fig.16 , the eccentricity of the elliptical shape can be in the range of 0.2 to 0.85.

[0370] Despite Figure 8 In the embodiment, the major axis direction of the ellipse has only two directions forming an angle of 45 degrees with respect to the first direction DR1 or the second direction DR2, but in another embodiment, the major axis direction of the ellipse may have four or less directions according to the embodiment.

[0371] pass Figure 8 , the planar structures of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter will be explained in detail.

[0372] exist Figure 8 In the figure, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter have an elliptical plane shape and are arranged in the first direction DR1 or the second direction DR2, and the major axes of the ellipses are arranged only in two directions forming 45 degrees relative to the second direction DR2.

[0373] Meanwhile, each of the red first openings OPr, the green first openings OPg, and the blue first openings OPb of the pixel defining layer 380 may be formed as an ellipse having at least two different eccentricities.

[0374] In addition, the red second openings OPCFr, the green second openings OPCFg, and the blue second openings OPCFb may each be formed as an ellipse having at least two different eccentricities.

[0375] In addition, Figure 8 In the embodiment of the present invention, the first openings OPr, OPg, OPb of the pixel defining layer 380 of the same color have at least two different elliptical plane shapes with different eccentricities. In addition, the second openings OPCFr, OPCFg, OPCFb of the color filter of the same color may have at least two different eccentricities and thus have different elliptical plane shapes.

[0376] The first opening OPr, OPg, OPb of one pixel defining layer 380 corresponds to the second opening OPCFr, OPCFg, OPCFb of one color filter.

[0377] That is, the first openings OPr, OPg, OPb of the pixel defining layer 380 corresponding to the corresponding second openings of the second openings OPCFr, OPCFg, OPCFb of the color filter are located within the corresponding second openings of the second openings OPCFr, OPCFg, OPCFb of the color filter.

[0378] The second openings OPCFr, OPCFg, OPCFb of the corresponding color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other on a plane and have an elliptical shape with a certain horizontal distance from each other, and the major axis directions may be formed at the same angle.

[0379] Here, the horizontal spacing between the second openings OPCFr, OPCFg, OPCFb of the color filter and the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 may be greater than 0 μm and less than or equal to 20 μm, and they may be 4.5 μm or greater and 10 μm or less in some embodiments.

[0380] The horizontal gap between the second openings OPCFr, OPCFg, OPCFb of the color filter and the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 is a layer (eg, encapsulation layer) located therebetween in cross section, and the horizontal interval may vary according to thickness.

[0381] At the same time, according to an embodiment, the long axis directions of the second openings OPCFr, OPCFg, OPCFb of the corresponding color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may form a certain angle due to process errors, etc., and may have an angle of 0 degrees or greater and 20 degrees or less.

[0382] Despite Figure 8 In the embodiment, the openings have the same color, but two or more elliptical shapes with different eccentricities can be placed in various positions at various ratios.

[0383] According to an embodiment, the same number of elliptical shapes having different eccentricities may be included in the display area, and according to an embodiment, they may be included in different numbers.

[0384] For example, when the red first openings OPr of the pixel defining layer 380 are formed in two elliptical shapes having different eccentricities, the corresponding red second openings OPCFr of the color filter also have different eccentricities.

[0385] However, according to an embodiment, the red second openings OPCFr of the color filters may be formed with the same eccentricity.

[0386] Reference Figure 8 If the angle formed by each long axis of the multiple first openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPCFr, OPCFg, OPCFb of the color filter is in the first direction DR1, it forms an angle of 45 degrees relative to the first direction DR1 and the second direction DR2.

[0387] In embodiments where the eccentricity of the ellipse is formed in various ways, Figure 7 Differently, the number of angles formed by the major axes of the ellipse may be four or less.

[0388] That is to say, Figure 8 In an embodiment, various elliptical shapes with different eccentricities are formed to reduce color separation of external light or to produce a constant diffraction pattern or constant color separation regardless of angle.

[0389] therefore, Figure 8 An embodiment with a major axis direction of the ellipse varying Figure 7 Embodiments achieve constant color separation and / or a constant diffraction pattern in different ways.

[0390] At the same time, Figure 8 In the embodiment, the number of ellipses in the major axis direction is small, so it is possible to generate Fig.11 The reflective diffraction pattern shown in (C), therefore, the directionality of the multiple first openings OPr, OPg, OPb or the diffraction pattern of the pixel defining layer 380 can be reduced by forming one of the multiple second openings OPCFr, OPCFg, OPCFb of the color filter in a circular shape or by increasing the number in the major axis direction in an elliptical shape.

[0391] At the same time, the following will see Fig. 9 Embodiment of the invention. Fig. 9 The embodiment combines Figure 7 Examples and Figure 8 Embodiment of the invention.

[0392] exist Fig. 9 In the embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are formed into elliptical shapes having different eccentricities even for the same color, and the angles formed by the long axes of each of the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are arranged at intervals of 45 degrees or less, or have four or more angles.

[0393] Here, refer to Fig.16 , the eccentricity of the elliptical shape can be in the range of 0.2 to 0.85.

[0394] Fig. 9 Examples include Figure 7 Examples and Figure 8All the features of the embodiments are such that if the angles formed by the long axes of the multiple first openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPCFr, OPCFg, OPCFb of the color filter have four or more angles or are arranged at intervals of 45 degrees or less, then additionally, the eccentricity of the ellipse can be variably formed to cause less color separation of external light or to cause a constant diffraction pattern or constant color separation regardless of the angle.

[0395] According to an embodiment, long axis directions of the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter are formed at constant or irregular intervals.

[0396] Figures 7 to 9 A rough comparison of the embodiments can be shown in Table 1 below.

[0397] [Table 1]

[0398]

[0399] In order to examine the characteristics of the embodiment, it is explained Fig.10 A comparative example, and through Fig.11 The diffraction characteristics and dispersion characteristics of reflected light between the comparative example and the example are compared and explained.

[0400] Fig.10 is a plan view of a portion of a display panel according to a comparative example, and Fig.11 is a comparison example and Figures 7 to 9 Photograph of the reflective properties of an example.

[0401] and Figures 7 to 9 The embodiments are different. Fig.10 The comparative example of FIG. 3 has both the second openings OPBMr, OPBmg, OPBMb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 formed in a circular shape.

[0402] at the same time, Fig.11 Shown for Figures 7 to 9 Examples and Fig.10 Diffraction pattern and dispersion of reflected light of the comparative example, and Fig.11 (A) is Fig.10 A comparative example, Fig.11 (B) is Figure 7 An embodiment of Fig.11 (C) is Figure 8 An embodiment of the invention, and Fig.11 (D) is Fig. 9 Embodiment of the invention.

[0403] First, watch Fig.11 In the comparative example of (A), the diffraction pattern is formed in a ring shape and is independent of the angle, but a plurality of rings are formed and each ring shows a different color, so it can be confirmed that the reflected light is separated by color.

[0404] On the contrary, refer to Fig.11 In (B) and (D), the diffraction pattern has no directionality, so it has a diffraction pattern that is independent of the angle, and the ring shape is not recognized and the whole appears white, so no specific color separation occurs.

[0405] At the same time, Fig.11 In (C), the diffraction pattern has a linear pattern at an angle of 45 degrees. This is caused by arranging the major axis angle of the ellipse only at 45 degrees. Therefore, the diffraction characteristics according to the angle can be reduced by forming a circular opening or increasing the number of directions of the major axis of the ellipse.

[0406] Next, we will Figure 12 to Figure 14 Explain the properties according to the major axis angle.

[0407] First, through Fig.12 Explain the relationship between the angle of the major axis of the ellipse and the direction of the diffraction pattern of reflected light.

[0408] Fig.12 is a diagram showing the reflection characteristics of a light-emitting display device according to angles.

[0409] Fig.12 The left sides (A), (B) and (C) of show a structure in which the first opening of the pixel defining layer 380 and the second opening of the color filter are arranged in the same direction, and the right side shows a diffraction pattern of reflected light.

[0410] Reference Fig.12 , when the first opening of the pixel defining layer and the second opening of the color filter have an elliptical shape, the diffraction pattern of the reflected light is also formed in an elliptical shape, but it can be seen that the major axis directions are different from each other.

[0411] That is, the long axis directions of the first opening of the pixel defining layer and the second opening of the color filter and the long axis direction of the elliptical pattern of the diffraction pattern of reflected light may be perpendicular to each other.

[0412] When the general Fig.12 When the diffraction patterns (A), (B) and (C) on the right are combined, it becomes as follows Fig.12 The circular diffraction pattern shown in (D) illustrates the possibility of having a diffraction pattern that is independent of angle.

[0413] In the following, through Fig.13 and Fig.14, it will be explained that a certain number of elliptical structures arranged at various angles are required to form an angle-independent diffraction pattern.

[0414] Fig.13 are diagrams showing various angle arrangements according to an embodiment, and Fig.14 It is a photo of the reflective properties according to the angle.

[0415] first, Fig.13 Shown are the directions of the major axes of a set of ellipses that can be formed in a display area.

[0416] Fig.13 (A) shows an example in which the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter has two long axis directions and an example in which the two long axis directions are arranged at intervals of 90 degrees.

[0417] Fig.13 (B) shows an example in which the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter has four long-axis directions and an example in which the four long-axis directions are arranged at intervals of 45 degrees.

[0418] Fig.13 (C) shows an embodiment in which the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter has nine long-axis directions and an embodiment in which the nine long-axis directions are arranged at intervals of 20 degrees.

[0419] Apart from Fig.13 In addition to the long axis directions shown in , various other long axis directions arranged at various angles can be formed. If the number of long axis directions is small, then Fig.11 As shown in (C), a difference in the diffraction pattern according to the angle occurs, and thus, the embodiment may include a certain number or more of major axis angles.

[0420] To confirm this, Fig.14 Various quantities of diffraction patterns according to the direction of the major axis are shown.

[0421] Fig.14 (A) is as follows Fig.13 (B) is a diffraction pattern of an example with 4 major axis angles, Fig.14 (B) is a diffraction pattern of an example with 5 major axis angles, Fig.14 (C) is a diffraction pattern of an example with 6 major axis angles, Fig.14 (D) is a diffraction pattern of an example having 7 major axis angles, and Fig.14 (E) is a diffraction pattern of an example with 8 major axis angles.

[0422] In order to have Fig.14The diffraction pattern in the direction is independent, and the diffraction pattern with a shape close to a circle is good, and Fig.14 In (A), it can be seen that due to the shape of the protrusion, the diffraction characteristics and color separation are different depending on the direction.

[0423] However, with Fig.11 Compared with the comparative example of (A), the diffraction pattern is unclear, and the visibility is low compared with the comparative example.

[0424] at the same time, Fig.14 (B) and (E) have circular diffraction patterns and have direction-independent diffraction characteristics and color separation.

[0425] Therefore, based on Fig.14 If the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter is formed to have four or more major axis angles, a constant diffraction pattern or constant color separation is generated regardless of the angle, thereby improving display quality.

[0426] Referring to the above, there may be four or more major axis angles, and in the embodiment having four or more major axis angles, the major axis angles may be arranged at intervals of 45 degrees or less.

[0427] In the above, the angles between the major axis angles of the ellipse and the number of angles are explained.

[0428] Below, based on Fig.15 and Fig.16 , the change of the reflection characteristics according to the change of the eccentricity of the ellipse will be explained.

[0429] Fig.15 and Fig.16 is a diagram showing reflection characteristics according to eccentricity.

[0430] Fig.15 A graph is shown in which the brightness distribution and the dispersion on the two axes of the color coordinates are extracted for the color diffraction pattern of the reflected light according to the value of the eccentricity. Based on this, Fig.16 A graph showing standard deviation values ​​of brightness based on eccentricity and distance values ​​on color coordinates is shown.

[0431] exist Fig.15 and Fig.16 It can be seen that the smaller the distance value for the brightness distribution and the color coordinates, the weaker the diffraction.

[0432] exist Fig.16 In FIG. 1 , the position where the distance value for the brightness distribution or the color coordinate is the smallest is indicated by an arrow.

[0433] Reference Fig.15 and Fig.16It can be seen that when the eccentricity is 0.5, it has the smallest brightness distribution value and is the best embodiment even when the color coordinates are considered.

[0434] In addition, refer to Fig.16 It is determined that in the area separated by the dotted lines (i.e., in the range of 0.2 to 0.85), the brightness distribution and color coordinates will not significantly reduce the display quality, so an ellipse with such an eccentricity range can be applied in this embodiment.

[0435] In the above, the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter is explained focusing on an embodiment having one eccentricity.

[0436] According to an embodiment, the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter may be formed in a shape similar to an ellipse, for example, at least two ellipse shapes having different eccentricities are merged to form the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter, which will be formed by Figures 17 to 19 Detailed explanation.

[0437] First, through Fig.17 and Fig.18 The substantially elliptical shape and the arrangement of the openings based thereon are explained.

[0438] Fig.17 and Fig.18 is a diagram showing a structure in which ellipses having different eccentricities are merged.

[0439] exist Fig.17 In, an example of merging two or more elliptical shapes with different eccentricities is explained in detail.

[0440] exist Fig.17 In (A) and (B) of , ellipses with different eccentricities are depicted. Fig.17 (C) and (D) depict ellipses formed by merging two ellipses with different eccentricities in different ways.

[0441] exist Fig.17 In (A), an ellipse with an eccentricity of 0.8 is shown, and Fig.17 In (B), an ellipse with an eccentricity of 0.6 is shown.

[0442] The ellipse that combines these two ellipses can have a shape like Fig.17 shape of (C) or (D).

[0443] exist Fig.17In (C) and (D), a dotted line is shown within the merged elliptical shape, and the ellipses on both sides of the dotted line are portions of the ellipse having different eccentricities.

[0444] That is to say, Fig.17 (C) is one of them Fig.17 Examples of (A) and (B) where the ellipses are cut along the second direction DR2 and then combined, and Fig.17 (D) is one of them Fig.17 1 and 2 are examples of ellipses that are cut along the first direction DR1 and then combined.

[0445] The method of merging two ellipses having different eccentricities is not limited thereto, and may be merged in various ways.

[0446] The second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are aligned with each other. Fig.17 The combined elliptical shapes are opened in various major axis directions in the same manner as in (C). Fig.18 An example of an arrangement is shown in .

[0447] exist Fig.18 In the embodiment of FIG. 1 , only one unit pixel is shown, and the one unit pixel includes one red opening OPr, OPCFr, one blue opening OPb, OPCFb, and two green openings OPg, OPCFg.

[0448] exist Fig.18 In the embodiment, the long axis directions of the first openings OPr, OPg, OPb of the pixel defining layer 380 may be different from each other, and the long axis directions of the second openings OPCFr, OPCFg, OPCFb of the color filter may also be different from each other.

[0449] As in Fig.18 In Fig.14 The embodiment using a merged ellipse with two different eccentricities explained in the drawing can have angles formed by four or more major axes of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter, and the angles formed by the major axes can be arranged at intervals less than 45 degrees.

[0450] Furthermore, the eccentricity of the two ellipses used for merging can be varied, so the size of the merged ellipse can also be varied.

[0451] Furthermore, according to an embodiment, two ellipses having different eccentricities for each color may be merged, and even if they are the same color, two ellipses having different eccentricities may be merged to form various ellipses.

[0452] Here, if Fig.15 and Fig.16 As shown in , the eccentricities of the first openings OPr, OPg, OPb of the pixel defining layer 380 and / or the second openings OPCFr, OPCFg, OPCFb of the color filter are 0.2 or more and 0.85 or less.

[0453] Long axis directions of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter may be the same or form an angle less than 20 degrees due to process errors or the like.

[0454] Meanwhile, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter may have a constant interval on a plane or a horizontal interval greater than 0 micrometers and less than or equal to 20 micrometers.

[0455] Next, we will explain the use of Fig.17 An example of ellipse shapes merged in the same way as in (C) Fig.19 (A) Diffraction characteristics of reflected light.

[0456] Fig.19 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0457] Fig.19 (A) shows an example in which the openings of each color have the same merged ellipse shape, but the major axis direction has 4 or more angles.

[0458] exist Fig.19 In (B), it is shown Fig.19 Diffraction characteristics of the reflected light in (A).

[0459] and Fig.11 Compared with the comparative example of (A), it can be seen that Fig.19 The diffraction characteristics of (B) have a blurred reflection diffraction pattern, the ring shape is unclear, and it is not easy for the user to recognize the separated colors.

[0460] As a result, compared with the comparative example, Fig.19 The example shown in (A) may also have improved display quality.

[0461] exist Figures 17 to 19 In the embodiment of FIG. 1 , an embodiment in which two different elliptical shapes are merged is shown and explained.

[0462] However, according to an embodiment, two or more elliptical shapes having different eccentricities may also be merged.

[0463] As described above, embodiments combining two or more elliptical shapes also have similar Fig.19 The reflected diffraction pattern of (B) has blurred diffraction characteristics, so the ring shape is unclear and the user cannot easily identify the separated colors, and compared with the comparative example, the embodiment combining two or more elliptical shapes can have improved display quality.

[0464] In addition, the elliptical shapes of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the elliptical shapes of the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter are spaced apart at a distance on a plane, and the interval on the plane may vary according to positions.

[0465] That is, according to an embodiment, the number or eccentricity of the elliptical shapes merged with the elliptical shape of the first opening OPr, OPg, OPb of the pixel defining layer 380 is determined by the second opening OPCFr, OPCFg, OPCFb of the corresponding color filter, and the number or eccentricity of the elliptical shapes merged with the elliptical shape may be different.

[0466] As described above, even when the elliptical shapes of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the elliptical shapes of the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter are different from each other, they have similar Fig.19 The reflected diffraction pattern of (B) is a reflected diffraction pattern, so the ring shape is unclear and the color separation is difficult for the user to easily recognize, resulting in improved display quality compared with the comparative example.

[0467] Meanwhile, according to an embodiment, the openings of some colors may have a circular shape instead of an elliptical shape, and will be referred to as Fig. 20 This embodiment is explained.

[0468] Fig. 20 is a plan view of a portion of a display panel according to another embodiment.

[0469] Fig. 20 is based on Fig. 9 In the embodiment, the red first opening OPr of the pixel defining layer 380 and the red second opening OPCFr of the color filter have a circular shape instead of an elliptical shape.

[0470] That is, the green and blue first openings OPg and OPb of the pixel defining layer 380 and the green and blue second openings OPCFg and OPCFb of the color filter all have an elliptical shape.

[0471] Meanwhile, according to an embodiment, one color except red among the openings of three colors may have a circular shape.

[0472] In other words, according to an embodiment, one or two of the red first opening OPr, the green first opening OPg, and the blue first opening OPb of the pixel defining layer 380 may have a circular shape, and the others may have an elliptical shape.

[0473] In addition, the red second opening OPCFr, the green second opening OPCFg and the blue second opening OPCFb can each have a shape corresponding to the planar shape of the corresponding red first opening OPr, green first opening OPg and blue first opening OPb of the pixel defining layer 380, and the red second opening OPCFr, green second opening OPCFg and blue second opening OPCFb can each have a certain horizontal distance from the corresponding red first opening OPr, green first opening OPg and blue first opening OPb of the pixel defining layer 380.

[0474] At this time, when the first openings OPr, OPg, OPb of the pixel defining layer 380 have an elliptical shape, the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter also have an elliptical shape. The first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter may have the same long axis direction of the elliptical shape.

[0475] exist Fig. 20 In, with Fig. 9 As in the embodiment, among the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380, the openings having an elliptical shape are formed as elliptical shapes with different eccentricities, and among the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380, the openings have an elliptical shape, and the angle formed by each major axis can have four or more angles, or the angles formed by the major axes can be arranged at intervals of 45 degrees or less.

[0476] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0477] According to an embodiment, among the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter, the ellipse major axis direction is formed at constant intervals, or it may be formed at irregular intervals.

[0478] exist Fig. 20 In the embodiment, at least one pair of the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter has an elliptical shape.

[0479] As a result, as described above, it can have the advantages of less color separation of external light or a constant diffraction pattern or constant color separation regardless of the angle.

[0480] at the same time, Fig. 20 An embodiment is wherein Fig. 9 An embodiment in which the oval shape for one or two colors is changed to a circular shape, but in Figure 7 or Figure 8 In an embodiment, for one or two colors, the oval shape is changed to a circular shape.

[0481] In addition, Fig.18 and Fig.19 In an embodiment, for one or two colors, the oval shape can be changed to a circular shape.

[0482] In the following, we will Fig.21 and Fig. 22 Reflection characteristics according to eccentricity are explained for various embodiments.

[0483] Fig.21 and Fig. 22 is a diagram showing reflection characteristics according to eccentricity.

[0484] first, Fig.21 It shows that Figure 7 The reflective characteristics of a display device having the same eccentricity while changing the eccentricity.

[0485] Fig.21 The eccentricity values ​​described in are values ​​of the multiple second openings OPCFr, OPCFg, OPCFb of the color filter.

[0486] exist Fig.21 In the embodiment, two groups of photos are included. One group is photos taken with external light provided at 10 cm, and the other group is photos taken with external light provided at 30 cm.

[0487] Here, the photo taken at 10cm shows the size and intensity of the halo that occurs around strong light, and the photo taken at 30cm shows the nature of external light being reflected and diffracted.

[0488] Reference Fig.21 ,exist Fig.10In the comparative example, the annular halo is strongly visible as the external light is reflected, but in the example using the ellipse with eccentricities of 0.5, 0.6, 0.7, and 0.8, there is an advantage that the annular halo is not visible.

[0489] at the same time, Fig. 22 It shows that Fig. 20 One of the colors has a circular shape rather than an elliptical shape, and the other two colors have the reflective characteristics of an embodiment of an elliptical shape.

[0490] exist Fig. 22 In, with Fig. 20 Differently, the blue color has a circular shape, specifically, the blue first opening OPb of the pixel defining layer 380 and the blue second opening OPCFb of the color filter have a circular shape, and the remaining openings have an elliptical shape.

[0491] at this time, Fig. 22 The reflection characteristics while changing the eccentricity of the elliptical-shaped opening are shown.

[0492] Fig. 22 The eccentricity values ​​described in are values ​​of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter, and 0 represents a circular shape.

[0493] Reference Fig. 22 ,exist Fig.10 In the comparative example of , as external light is reflected, the halo is strongly visible as a ring pattern, but in the example including at least one ellipse, the halo is not visible.

[0494] In addition, since the Fig. 20 Embodiment Fig. 22 In the photos and Fig.21 As shown in Figure 7 No halo is recognized in the photograph of the embodiment, so it can be confirmed that Fig. 20 The embodiment has Figure 7 The embodiments have a comparable effect.

[0495] At the same time, in the following, Figure 23 to Figure 25 See another modified embodiment.

[0496] Figure 23 to Figure 25 is a plan view of a portion of a display panel according to another exemplary embodiment.

[0497] First, we will explain Fig.23 Embodiment of the invention.

[0498] Reference Fig. 20 and Fig. 22, it is confirmed that the embodiment in which one or two colors are formed into an elliptical shape and the remaining colors are formed into a circular shape has a similar effect to the embodiment in which all colors are formed into an elliptical shape.

[0499] Therefore, according to an embodiment, an elliptical shape may be used instead of a circular shape, and it can be seen that a similar effect may be achieved even with an eccentricity (greater than 0 and less than 0.2) compared to the eccentricity (0.2 to 0.85) defined above.

[0500] Will pass Fig.23 One of these embodiments is explained.

[0501] Fig.23 yes Fig. 20 A modified example of Fig. 20 The two red openings OPr and OPCFr in are transformed into ellipses with an eccentricity greater than 0 and less than 0.2 instead of circular shapes.

[0502] Specifically, Fig.23 The embodiment is based on Fig. 9 of the embodiments, and with Fig. 9 and Fig. 20 The difference is that the red first opening OPr of the pixel defining layer 380 and the red second opening OPCFr of the color filter have an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0503] In other words, the green and blue first openings OPg and OPb of the pixel defining layer 380 and the green and blue second openings OPCFg and OPCFb of the color filter all have an elliptical shape with an eccentricity of 0.2 or more and 0.85 or less.

[0504] Meanwhile, according to an embodiment, one other color except red among the three color openings may have an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0505] That is, according to an embodiment, one or two of the red first opening OPr, the green first opening OPg, and the blue first opening OPb of the pixel defining layer 380 have an elliptical shape with an eccentricity greater than 0 and less than 0.2, and the remaining portion may have an elliptical shape with an eccentricity of 0.2 or greater and 0.85 or less.

[0506] In addition, the red second opening OPCFr, the green second opening OPCFg, and the blue second opening OPCFb of the color filter respectively correspond to the corresponding red first opening OPr, the green first opening OPg, and the blue first opening OPb of the pixel defining layer 380. Each may have a shape corresponding to the plane shape, and the red first opening OPr, the green first opening OPg, and the blue first opening OPb of the pixel defining layer 380 may each have a certain horizontal distance from the red second opening OPCFr, the green second opening OPCFg, and the blue second opening OPCFb of the color filter.

[0507] At this time, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter corresponding thereto may have the same ellipse major axis direction.

[0508] exist Fig.23 In, as in Fig. 9 In the embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are different even for the same color, they are formed in an eccentric elliptical shape, and the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 have an angle formed by their long axes of four or more angles, and the angles formed by the long axes can be arranged at intervals of 45 degrees or less.

[0509] According to an embodiment, among the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter, the ellipse major axis direction is formed at constant intervals, or it may be formed at irregular intervals.

[0510] exist Fig.23 In the embodiment, at least one pair of the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter has an elliptical shape with an eccentricity of 0.2 or more and 0.85 or less.

[0511] As a result, as described above, it can have the advantages of less color separation of external light or a constant diffraction pattern or constant color separation regardless of the angle.

[0512] At the same time, Fig.23 In the embodiment, Fig. 9 The elliptical shape for one or two colors of the embodiment is changed to an elliptical shape having an eccentricity greater than 0 and less than 0.2, but Figure 7 or Figure 8 Any of the embodiments can be changed to an elliptical shape having an eccentricity greater than 0 and less than 0.2.

[0513] In addition, Fig.18 and Fig.19 In an embodiment, the elliptical shape for one or two colors can be changed to an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0514] At the same time, in the above embodiments, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter corresponding thereto are explained focusing on the embodiments in which the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are spaced at regular intervals on a plane.

[0515] However, according to an embodiment, the horizontal interval between the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter may be changed according to the position. Fig.24 and Fig.25 This embodiment is explained.

[0516] Here, a horizontal gap between the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter may be greater than 0 μm and less than or equal to 20 μm.

[0517] First, we will explain Fig.24 Embodiment of the invention.

[0518] exist Fig.24 , an embodiment is shown in which the second openings OPCFr, OPCFg, OPCFb of the red, green and blue color filters and the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 are formed as ellipses having different eccentricities.

[0519] exist Fig.24 In the embodiment, the eccentricity of the second openings OPCFr, OPCFg, OPCFb of the color filter may have a smaller value than the eccentricity of the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 .

[0520] However, according to an embodiment, the eccentricity of the first openings OPr, OPg, OPb of the pixel defining layer 380 may have a smaller value than the eccentricity of the second openings OPCFr, OPCFg, OPCFb of the corresponding color filter.

[0521] Reference Fig.24 , the horizontal interval between the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter is not constant, and there are wide positions and narrow positions.

[0522] exist Fig.24 In the embodiment, the corresponding first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter may have the same long axis direction of the elliptical shape.

[0523] like Fig.24 As shown in, as described above, even if the horizontal spacing between the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter is not constant, due to the direction or various eccentricities, there can be an advantage that color separation of external light occurs less or a constant diffraction pattern or constant color separation occurs regardless of the angle.

[0524] Furthermore, even if external light is reflected, the halo of the ring pattern may not be visible.

[0525] exist Fig.24 In the embodiment, as in Fig. 9 In the embodiment of the present invention, the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 may be formed in the shape of ellipses with different eccentricities even for the same color. The second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 may be spaced apart so that the angle formed by their respective long axes has an angle greater than 4 degrees or more, or the angle formed by their long axes may have an angle of 45 degrees or less.

[0526] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0527] According to an embodiment, among the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter, the elliptical major axis directions may be formed at constant intervals or at irregular intervals.

[0528] Meanwhile, according to the embodiment, Fig.24 As shown in , the portion where the horizontal spacing is not constant may be applied to only one or two colors.

[0529] Will pass Fig.25 This embodiment is explained.

[0530] Fig.25 The embodiment is based on Fig.24 In an embodiment, only the red first opening OPr of the pixel defining layer 380 and the red second opening OPCFr of the color filter have a structure in which the horizontal interval is not constant, and the green first opening OPg and the blue first opening OPb of the pixel defining layer 380 and the green second opening OPCFg and the blue second opening OPCFb of the color filter have a structure in which the horizontal interval is constant.

[0531] Meanwhile, according to an embodiment, among the openings of three colors, one color except red may have a shape with uneven horizontal intervals.

[0532] That is, according to an embodiment, one or two of the red first opening OPr, green first opening OPg and blue first opening OPb of the pixel defining layer 380 may have a shape that is unevenly horizontally spaced apart from the red second opening OPCFr, green second opening OPCFg and blue second opening OPCFb of the corresponding color filter.

[0533] exist Fig.25 In the embodiment, at least one pair of the plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter has a shape with a constant horizontal interval.

[0534] As a result, as described above, it can have the advantages of less color separation of external light or a constant diffraction pattern or constant color separation regardless of the angle.

[0535] Furthermore, even if external light is reflected, the halo of the ring pattern may not be visible.

[0536] at the same time, Fig.24 and Fig.25 The embodiment is based on Fig. 9 Modification of the embodiment of the present invention, but even based on Figure 7 and Figure 8 The embodiments may also be modified so that the horizontal spacing is not constant.

[0537] In addition, Fig.18 and Fig.19 In an embodiment, the horizontal interval may be changed to be non-constant.

[0538] Next, we pass Fig.26 The structure of a unit pixel will be viewed.

[0539] Fig.26 is a plan view showing a configuration of a unit pixel of one of the display panels according to the embodiment.

[0540] Fig.26 (A) shows an example in which a unit pixel is formed by including one red light emitting region, one green light emitting region, and one blue light emitting region.

[0541] Specifically, the embodiment includes each of the red first opening OPr, green first opening OPg, and blue first opening OPb of the pixel defining layer 380 and each of the red second opening OPCFr, green second opening OPCFg, and blue second opening OPCFb of the color filter in each pixel.

[0542] However, according to the embodiment, as Fig.26 In (B), (C) and (D), it may include a unit pixel having a total of four light emitting regions including two light emitting regions having one color.

[0543] Fig.26 (B) shows a unit pixel including two blue light-emitting regions, Fig.26 (C) shows a unit pixel including two red light emitting regions, and Fig.26 (D) shows a unit pixel including two green light emitting regions.

[0544] Specifically, Fig.26 The unit pixel in (B) includes two blue first openings OPb of the pixel defining layer 380 and two blue second openings OPCFb of the color filter.

[0545] At this time, the two blue first openings OPb of the pixel defining layer 380 and the two blue second openings OPCFb of the color filter may have different eccentricities, and the directions of their long axes may also be different.

[0546] also, Fig.26 The unit pixel in (C) includes two red first openings OPr of the pixel defining layer 380 and two red second openings OPCFr of the color filter.

[0547] At this time, the two red first openings OPr of the pixel defining layer 380 and the two red second openings OPCFr of the color filter may have different eccentricities, and the directions of their major axes may also be different.

[0548] at the same time, Fig.26 The unit pixel in (D) includes two green first openings OPg of the pixel defining layer 380 and two green second openings OPCFg of the color filter.

[0549] At this time, the two green first openings OPg of the pixel defining layer 380 and the two green second openings OPCFg of the color filter may have different eccentricities, and the directions of their major axes may also be different.

[0550] The plurality of first openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter of the above-mentioned various embodiments or modifications thereof may be applied to Fig.26 Each unit pixel.

[0551] In the above, the embodiment in which the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter have the elliptical shape or the elliptical-like shape is explained.

[0552] Hereinafter, an embodiment in which one of the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter has an elliptical shape or an elliptical-like shape, and the other has a circular shape will be explained.

[0553] pass Fig. 27 and Fig.28 , the second opening OPCF of the color filter may have an elliptical shape, the first opening OP of the pixel defining layer 380 may have a circular shape, and an embodiment in which the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 meet will be explained.

[0554] Fig. 27 and Fig.28 is a plan view of a portion of a display panel according to another embodiment.

[0555] exist Fig. 27 In the figure, only the first opening OP of one pixel defining layer and the second opening OPCF of one color filter corresponding thereto are shown.

[0556] exist Fig. 27 In the embodiment, the pixel defining layer is located outside the first opening OP, and the light blocking region LB of the color filter is also located outside the second opening OPCF.

[0557] exist Fig. 27 In the embodiment of the present invention, the first opening OP of the pixel defining layer 380 has a circular planar shape, and the second opening OPCF of the color filter has an elliptical planar shape.

[0558] The elliptical second opening OPCF of the color filter has a structure in contact with the circular first opening OP of the pixel defining layer 380 at two points.

[0559] exist Fig. 27 In the embodiment, the radius value Rop of the circular shape of the first opening OP of the pixel defining layer 380 is half of the minor axis length Ropcf1 of the elliptical shape of the second opening OPCF of the color filter and is smaller than half of the major axis length Ropcf2 of the elliptical shape.

[0560] A value of half of the major axis length Ropcf2 of the elliptical shape may be greater than 0 μm and less than or equal to 20 μm than the radius value Rop of the circular shape of the first opening OP of the pixel defining layer 380 , and according to an embodiment, it may be as large as 4.5 μm or more and 10 μm or less.

[0561] The major axis length Ropcf2 of the elliptical shape may vary in horizontal distance according to the thickness of a layer (eg, an encapsulation layer) located between the light blocking region LB of the color filter and the pixel defining layer 380 in a cross section, and the encapsulation layer is about 6 μm.

[0562] 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 and a minor axis.

[0563] Meanwhile, the eccentricity of an ellipse is the distance between the two foci divided by the length of the major axis.

[0564] When the eccentricity is 0, it is a circle, and when it is 1, it forms a parabola, so an ellipse has eccentricity values ​​greater than 0 and less than 1.

[0565] The eccentricity value of the ellipse as the shape of the second opening OPCF of the color filter may vary according to embodiments.

[0566] At the same time, the direction of the long axis of the second opening OPCF of the color filter may also be changed.

[0567] At the same time, Fig. 27 In the embodiment, the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter are in contact at two points on a plane, but due to errors during actual processing, a portion of one side of the first opening OP of the pixel defining layer 380 may be covered by the light blocking area LB of the color filter without overlapping with the second opening OPCF of the color filter.

[0568] In this case, it can have the same Fig.33 A similar effect is achieved with the embodiments described above.

[0569] With Fig. 27 The first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter of the same structure may be as follows: Fig.28 is arranged in the display area as shown in .

[0570] exist Fig.28 In the figure, based on the light-emitting layers displaying the three primary colors of red, green and blue, the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter corresponding to each light-emitting layer are opened as first openings OPr, OPg, OPb and second openings OPCFr, OPCFg, OPCFb, respectively.

[0571] Here, r, g, and b may correspond to red, green, and blue, respectively.

[0572] The second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at various angles, and the red second openings OPCFr, green second openings OPCFg, and blue second openings OPCFb of the color filter may have different eccentricities.

[0573] Meanwhile, each of the second openings OPCFr, OPCFg, OPCFb of the same color may be formed with the same or different eccentricities.

[0574] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0575] At this time, the red first openings OPr, green first openings OPg, and blue first openings OPb of the pixel defining layer 380 may be formed in circles having different radii, and the first openings OPr, OPg, OPb of the same color may each have the same or different radii.

[0576] The first opening OPr, OPg, OPb of one pixel defining layer 380 corresponds to the second opening OPCFr, OPCFg, OPCFb of one color filter.

[0577] That is, in each of the second openings OPCFr, OPCFg, OPCFb of the color filter, the first openings OPr, OPg, OPb of the pixel defining layer 380 correspond to the second openings OPCFr, OPCFg, OPCFb of the color filter, respectively.

[0578] The second openings OPCFr, OPCFg, OPCFb of the corresponding color filters and the first openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other on a plane.

[0579] exist Fig. 27 In the embodiment, the circular first openings OPr, OPg, OPb of the pixel defining layer 380 and the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter have a structure in which they contact each other at two points on a plane.

[0580] However, in another embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filter may be larger, so that the circular first openings OPr, OPg, OPb of the pixel defining layer 380 may be formed within the second openings OPCFr, OPCFg, OPCFb of the color filter on the plane of the planar color filter (see FIG. Fig.31In yet another embodiment, there may be a structure in which the second openings OPCFr, OPCFg, OPCFb of the color filter are relatively small and some of the circular first openings OPr, OPg, OPb of the pixel defining layer are covered with the planar light blocking area LB of the color filter (see Fig.33 ).

[0581] exist Fig.28 , the second openings OPCFr, OPCFg, OPCFb of the color filter are arranged in various directions, and based on the major axis direction of the ellipse, the angles at which the second openings OPCFr, OPCFg, OPCFb are arranged will be explained.

[0582] According to an embodiment, the angle formed by each of the major axes of the second openings OPCFr, OPCFg, OPCFb of the color filter may have four or more angles, and the angles formed by the major axes may be at intervals of 45 degrees or less.

[0583] As an example, focusing on an embodiment with five angles to view the specific angle relationship, the relationship is as follows.

[0584] In an embodiment having 5 angles, the angles of the major axes are formed at intervals of 36 degrees, and thus for a total of 5 angles, when one major axis has 0 degrees based on the first direction DR1, angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees are formed.

[0585] In other words, the distance between the angles of the major axis can be checked by dividing the angle of 180 degrees by 5, which is the number of directions, which means that two angles with an angle of 180 degrees in 360 degrees have substantially the same direction as the major axis of the ellipse. This can be calculated based on 180 degrees divided by the number of directions.

[0586] The plurality of second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at constant intervals at a specific angle of 45 degrees or less.

[0587] However, according to an embodiment, the angle formed by the major axis of each of the second openings OPCFr, OPCFg, OPCFb may be one of 45 degrees or less and may be arranged at irregular intervals.

[0588] Embodiments in which the major axes of the openings are arranged at irregular intervals may be arranged intentionally to reduce the diffraction pattern, or may be arranged at irregular intervals due to processing errors.

[0589] Meanwhile, in order to make the unit pixel including the openings of red, green, and blue have a square structure, it may be necessary to differentiate the square of an integer (such as 2) by the angle with respect to the long axis. 2 , 3 2 , 42 , 5 2 etc.) to form them.

[0590] Here, the unit pixel may include each of a red opening, a green opening, and a blue opening, and a plurality of openings of one color, for example, a green opening, may be formed.

[0591] In this manner, the first openings OPr, OPg, OPb of the pixel defining layer 380 are formed in a circular shape, and the reflective characteristics when the second openings OPCFr, OPCFg, OPCFb of the color filter are formed in an elliptical shape are Fig.29 Shown in.

[0592] Fig.29 is a comparison example and Fig.28 Photograph of the reflective properties of an example.

[0593] Fig.29 (A) shows the diffraction pattern and dispersion of the reflected light for the comparative example, and Fig.29 (B) shows the Fig.28 Example of diffraction pattern and dispersion of reflected light.

[0594] Here, in the comparative example, Fig.10 As shown in FIG. 1 , the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the color filter are formed in a circular shape.

[0595] First, watch Fig.29 In the comparative example of (A), the diffraction pattern is formed into a plurality of ring shapes, each of which can be clearly seen, and each ring represents a different color, so the user sees that the reflected light is separated into various colors.

[0596] On the contrary, refer to Fig.29 In (B), it can be seen that the diffraction pattern is relatively unclear and the shape of the ring is unclear.

[0597] The lack of clarity in the diffraction pattern can occur for the following reasons.

[0598] First, the first openings OPr, OPg, OPb of the pixel defining layer 380 are formed in a circular shape, and if the second openings OPCFr, OPCFg, OPCFb of the color filter are formed in an elliptical shape, the gap between the two openings is not constant, and the light emitted from the light-emitting layer within the first openings OPr, OPg, OPb of the pixel defining layer 380 is bent at the side walls of the second openings OPCFr, OPCFg, OPCFb of the color filter, and the resulting diffraction patterns are different.

[0599] Therefore, when the diffraction patterns are mixed, less constructive interference occurs and the diffraction patterns are blurred.

[0600] Therefore, according to the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter, the diffraction pattern spreads and becomes unclear.

[0601] In addition, refer to Fig.28 , since the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter are arranged at various angles, this also causes the direction of the diffraction pattern to change, forming a blurred mixture and causing a scattering effect.

[0602] Due to such mixing of diffraction patterns, the diffraction pattern is unclear and it is not easy for the user to see the diffraction pattern, thereby reducing the degree of display quality degradation.

[0603] According to an embodiment, the major axes of the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at four or more angles or may be arranged at intervals of 45 degrees or less, in which case a lower diffraction pattern and color separation may occur.

[0604] At the same time, below, it will be passed Fig.30 Watch the video with Fig. 27 The embodiment shown in FIG. 2 shows two embodiments of specific angular intervals formed by the major axes of the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter.

[0605] Fig.30 yes Fig. 27 A plan view of a portion of a display panel arranged at various angles in an embodiment.

[0606] first, Fig.30 (A) shows an embodiment in which the major axes of the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter are arranged at an angular interval of 22.5 degrees.

[0607] at the same time, Fig.30 (B) shows a diagram in which the long axis of the second openings OPCFr, OPCFg, OPCFb of the color filter is Fig.30 An example of arrangement with an angular interval that is half the angular interval of (A) (ie, 11.25 degrees).

[0608] Here, in the case of a 22.5 degree angle interval Fig.30 In the embodiment of (A), there may be 8 angles formed by the major axes of the second openings OPCFr, OPCFg, OPCFb of the color filter having an elliptical shape.

[0609] That is, since 180 degrees divided by 8 is 22.5 degrees, the major axes of the second openings OPCFr, OPCFg, OPCFb of the color filters can be arranged in eight directions.

[0610] Here, since two angles having a difference of 180 degrees are substantially in the same direction, calculation is performed based on 180 degrees instead of 360 degrees.

[0611] At the same time, with an angular spacing of 11.25 degrees Fig.30 The embodiment of (B) has Fig.30 The angle is twice the angle of the embodiment of (A), and the major axes of the second openings OPCFr, OPCFg, OPCFb of the color filters are arranged in a total of 16 directions.

[0612] In such Fig.30 In the two embodiments of the arrangement shown in FIG, the long axis arrangement angles of the second openings OPCFr, OPCFg, and OPCFb of the color filter are greater than 4, so the diffraction patterns are mixed without specific directionality, making the user uncertain about the directionality of the diffraction patterns. However, since color separation is not easily recognized, the display quality can be improved.

[0613] exist Fig.30 In the embodiment, the major axes of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter are arranged at constant intervals, but according to an embodiment, they may be arranged at irregular intervals at an angle of 45 degrees or less.

[0614] In the above, Fig. 27 As shown in , the first opening OP of the pixel defining layer 380 may have a circular shape, the second opening OPCF of the color filter may have an elliptical shape, and the circle and the ellipse are tangent to each other on a plane.

[0615] However, the first opening OP of the pixel defining layer 380 or the second opening OPCF of the color filter may be relatively large and will pass through Figure 31 to Figure 37 This embodiment is explained.

[0616] First, through Fig.31 and Fig.32 , the first opening OP of the pixel defining layer 380 is located within the second opening OPCF of the color filter, so that the first opening OP of the pixel defining layer 380 blocks the light of the color filter. Next, an example of not being shielded by the area will be explained.

[0617] Fig.31 and Fig.32 is a plan view of a portion of a display panel according to another embodiment.

[0618] first, Fig.31The second openings OPCF showing the color filter may be formed at various intervals gap1, gap2, gap3 according to how much larger the first openings OP of the pixel defining layer 380 are formed.

[0619] exist Fig.31 In the embodiment, the second opening OPCF of the color filter is large, so the circular first opening OP of the pixel defining layer 380 is located within the second opening OPCF of the color filter in a plan view.

[0620] Therefore, in Fig.31 In the embodiment, the radius value Rop of the circular shape of the first opening OP of the pixel defining layer 380 is smaller than half of the value of the short axis length Ropcf1 of the elliptical shape of the second opening OPCF of the color filter, and is also smaller than half of the value of the long axis length Ropcf2 of the elliptical shape.

[0621] A value of half of the major axis length Ropcf2 of the elliptical shape may be greater than 0 μm and less than or equal to 20 μm than a radius value Rop of the circular shape of the first opening OP of the pixel defining layer 380 .

[0622] Specifically, in Fig.31 In (A), the minimum horizontal gap between the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 in a plan view is the interval gap1 (which is a relatively small value), but in Fig.31 In (B), the minimum horizontal gap is relatively larger than the gap1 at the gap2, and Fig.31 In (C), the smallest horizontal gap is the interval gap3 (which is the largest among the intervals gap1 to gap3).

[0623] exist Fig.31 In (A) to (C), the ellipse eccentricity of the second opening OPCF of the color filter may also be different.

[0624] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0625] At the same time, Fig.31 In the embodiment, due to an error during an actual process, a portion of the first opening OP of the pixel defining layer 380 may not overlap with the second opening OPCF of the color filter and may be covered by the light blocking region LB of the color filter.

[0626] In addition, the first opening OP of the pixel defining layer 380 is located within the second opening OPCF of the color filter, but may be located close to a boundary or may be in contact with a boundary plane.

[0627] at the same time, Fig.32Embodiments are shown in which the major axes of the ellipses of the second openings OPCFr, OPCFg, OPCFb of the color filters are arranged at various angles.

[0628] also, Fig.32 The second openings OPCFr, OPCFg, OPCFb of the color filter in have different eccentricities for each color.

[0629] According to an embodiment, two openings corresponding to the same color among the second openings OPCFr, OPCFg, OPCFb of the color filter may have different eccentricities, and according to an embodiment, the second openings OPCFr, OPCFg, OPCFb may have the same eccentricity.

[0630] In addition, the major axes of the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at 4 or more angles or may be arranged at intervals of 45 degrees or less.

[0631] Fig.31 The embodiment can also be as follows Fig.30 As shown in (A), there are 8 major axis directions arranged at an angle of 22.5 degrees, or as Fig.30 As shown in (B), 16 long axis directions are arranged at an angular interval of 11.25 degrees.

[0632] exist Fig.32 In the embodiment, the long axis direction of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter is arranged at a constant interval, but Fig.31 In the embodiment, they can be arranged at irregular intervals at an angle of 45 degrees or less depending on the embodiment.

[0633] In the above, the embodiment in which the first opening OP of the pixel defining layer 380 is located within the second opening OPCF of the color filter has been explained.

[0634] In the following, we will Figure 33 to Figure 37 A structure in which the second opening OPCF of the color filter is relatively small and a portion of the circular first opening OP of the pixel defining layer 380 is covered by the light blocking area LB of the color filter in a plane is explained.

[0635] First, through Fig.33 and Fig.34 The relationship between the second opening OPCF of the color filter and the first opening OP of the pixel defining layer 380 is explained.

[0636] Fig.33 and Fig.34 is a plan view of a portion of a display panel according to another embodiment.

[0637] exist Fig.33 , only the first opening OP of one pixel defining layer 380 and the second opening OPCF of one color filter corresponding thereto are shown.

[0638] The second opening OPCF of the color filter overlaps a portion of the first opening OP of the pixel defining layer 380 , and the remaining portion of the first opening OP of the pixel defining layer 380 is covered by the light blocking region LB of the color filter.

[0639] As a result, the light emitting layer located within the first opening OP of the pixel defining layer 380 may be partially shielded by the light blocking region LB of the color filter.

[0640] exist Fig.33 , a portion of the first opening OP of the pixel defining layer 380 is shown with a dotted line to indirectly show that the corresponding portion is located under the light blocking region LB of the color filter and is shielded.

[0641] At the same time, Fig.33 In the embodiment, due to an error during actual processing, a portion of the first opening OP of the pixel defining layer 380 shielded by the light blocking region LB of the color filter may not be constant on both sides and an area of ​​one side may be larger.

[0642] In addition, one side of the first opening OP of the pixel defining layer 380 may be located within or in contact with the second opening OPCF of the color filter, and only the other side may be shielded by the light blocking region LB of the color filter.

[0643] like Fig.33 As shown in FIG. 3 , if a portion of the first opening OP of the pixel defining layer 380 is covered by the light blocking region LB of the color filter, light emitted from the light emitting layer inside the first opening OP may not be provided to the front, which may reduce light efficiency.

[0644] However, the size of the first opening OP of the pixel defining layer 380 is related to the lifetime of the light emitting layer located therein, so the size of the first opening OP may not be reduced in order to maintain the lifetime above a certain level.

[0645] With Fig.33 The first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter of the same structure as shown in FIG. Fig.34 Arrangement shown in .

[0646] Reference Fig.34 The major axes of the ellipses of the second openings OPCFr, OPCFg, and OPCFb of the color filters are arranged at various angles.

[0647] Here, the first openings OPr, OPg, OPb of the pixel defining layer 380 are each formed in a circular shape, and a portion of the first openings OPr, OPg, OPb is the second openings OPCFr, OPCFg, OPCFb of the color filter. However, the remaining portion does not overlap with the second openings OPCFr, OPCFg, OPCFb of the color filter and is therefore hidden by the light blocking region LB of the color filter.

[0648] also, Fig.34 The second openings OPCFr, OPCFg, OPCFb of the color filter in have different eccentricities for each color.

[0649] According to an embodiment, two openings corresponding to the same color among the second openings OPCFr, OPCFg, OPCFb of the color filter may have different eccentricities, and according to an embodiment, the second openings OPCFr, OPCFg, OPCFb may have the same eccentricity.

[0650] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0651] In addition, the major axes of the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter may be arranged at 4 or more angles or may be arranged at intervals of 45 degrees or less.

[0652] Fig.33 The embodiment can also be as follows Fig.30 As shown in (A), there are 8 major axis directions arranged at an angle of 22.5 degrees, or as Fig.30 As shown in (B), 16 long axis directions are arranged at an angular interval of 11.25 degrees.

[0653] exist Fig.34 In the embodiment, the long axis direction of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter is arranged at a constant interval, but Fig.33 In the embodiment, they can be arranged at irregular intervals at an angle of 45 degrees or less depending on the embodiment.

[0654] As mentioned above, in Fig.35 2 , the diffraction characteristics of the external light reflected in the embodiment in which a portion of the first openings OPr, OPg, OPb of the pixel defining layer 380 is shielded by the light blocking region LB of the color filter are explained.

[0655] Fig.35 yes Fig.34 Photographs of the reflective properties of the comparative example and the embodiment.

[0656] Fig.35(A) is a diffraction pattern of a comparative example, and as described above Fig.10 As shown in FIG. 1 , the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter are all circular.

[0657] at the same time, Fig.35 (B) shows the Fig.34 Diffraction pattern and dispersion of reflected light of embodiment.

[0658] Will Fig.35 (B) and Fig.35 By comparing with (A), we can see that Fig.35 The diffraction pattern of (B) is relatively unclear and the shape of the rings is not clearly visible.

[0659] exist Fig.33 and Fig.34 In the embodiment, some of the first openings OPr, OPg, OPb of the pixel defining layer 380 are shielded by the light blocking region LB of the color filter, but Fig. 27 As shown in FIG. 1 , the first openings OPr, OPg, OPb are in contact with the second openings OPCFr, OPCFg, OPCFb of the color filter, or as shown in FIG. Fig.31 As shown in FIG. 3 , the first openings OPr, OPg, OPb of the pixel defining layer 380 are within the second openings OPCFr, OPCFg, OPCFb of the color filter. It can be seen that there is no significant difference in the diffraction pattern.

[0660] That is to say, even in Fig.34 In the embodiment of FIG. 1 , the gap between the two openings is also not constant, so the resulting diffraction patterns may be different, and as each diffraction pattern mixes, the overall diffraction pattern is blurred.

[0661] Furthermore, since the elliptical second openings OPCFr, OPCFg, OPCFb of the color filter are arranged at various angles, the directions of the diffraction patterns vary and are mixed together, forming blurring and scattering effects.

[0662] As a result, the user cannot easily recognize the diffraction pattern, and the degree of display quality degradation decreases.

[0663] Above, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter are in contact with each other on the plane, or the second openings OPCFr, OPCFg, OPCFb of the color filter are planarly continuous or all or part of the first openings OPr, OPg, OPb of the pixel defining layer 380 are located within the second openings OPCFr, OPCFg, OPCFb of the color filter.

[0664] Each of these embodiments can improve the reflection diffraction characteristics of external light by changing the arrangement of the major axis direction of the second openings OPCFr, OPCFg, OPCFb of the color filter or by changing the eccentricity of the ellipse.

[0665] In the following, we will Fig.36 and Fig.37 An embodiment in which the eccentricity of the ellipse is changed or the arrangement of the major axis is changed is explained.

[0666] Fig.36 and Fig.37 is a plan view of a portion of a display panel according to another embodiment.

[0667] Fig.36 An embodiment in which the second opening OPCF of the color filter is formed at various eccentricities is shown, and Fig.37 Embodiments are shown in which the second opening OPCF of the color filter has various angles and is formed at various eccentricities.

[0668] According to an embodiment, the second openings OPCF of the color filters are formed at the same eccentricity, but may be formed at various angles.

[0669] Watch Fig.36 An embodiment of the invention is as follows.

[0670] Fig.36 An embodiment is shown in which the second openings OPCFr, OPCFg, OPCFb of the color filter are formed in an elliptical shape having two or more different eccentricities.

[0671] According to an embodiment, each opening of the same color may be formed in an elliptical shape having a different eccentricity.

[0672] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0673] exist Fig.36 , 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.

[0674] Depending on the embodiment, it may have 4 or fewer directions.

[0675] pass Fig.36 , the planar structure of the second openings OPCFr, OPCFg, OPCFb of the color filter will be explained in detail.

[0676] exist Fig.36, the first openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape, and the second openings OPCFr, OPCFg, OPCFb of the color filter have an elliptical plane shape.

[0677] Some of the first openings OPr, OPg, OPb of the pixel defining layer 380 do not overlap with the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter in a plane and are thus shielded by the light blocking region LB of the color filter.

[0678] The second openings OPCFr, OPCFg, OPCFb of the color filter have major axes of elliptical shapes arranged only in two directions forming 45 degrees with respect to the first direction DR1 or the second direction DR2.

[0679] Meanwhile, the red second openings OPCFr, the green second openings OPCFg, and the blue second openings OPCFb of the color filter may each be formed as an ellipse having at least two different eccentricities.

[0680] In addition, Fig.36 In the embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filters of the same color may have at least two different eccentricities and thus have different elliptical plane shapes.

[0681] exist Fig.36 In the case of openings of the same color but having different elliptical shapes with different eccentricities, the elliptical shapes with different eccentricities may be arranged in various positions at various ratios.

[0682] According to an embodiment, the same number of oval shapes having different eccentricities may be included in the display area, and they may be included in different numbers.

[0683] Reference Fig.36 The angle formed by each of the major axes of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter is 45 degrees with respect to the first direction DR1 and the second direction DR2.

[0684] In embodiments where the eccentricity of the ellipse is formed in various ways, the number of angles formed by the major axis of the ellipse may be 4 or less.

[0685] That is to say, Fig.36 In an embodiment, various elliptical shapes with different eccentricities are formed to reduce color separation of external light or to produce a constant diffraction pattern or constant color separation regardless of angle.

[0686] Therefore, even if the direction of the major axis of the ellipse does not change, Fig.36Embodiments may also achieve constant color separation and / or a constant diffraction pattern.

[0687] At the same time, the following Fig.37 Inspection of embodiments.

[0688] exist Fig.37 In the embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filter are formed into an elliptical shape having different eccentricities even for the same color, and the major axis of each of the second openings OPCFr, OPCFg, OPCFb of the color filter is formed. Angles have 4 or more angles, or the angles formed by the major axes are spaced at intervals of less than 45 degrees.

[0689] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0690] exist Fig.37 In the embodiments, the eccentricity of the ellipse varies, and the direction of the major axis of the ellipse is also arranged in various ways.

[0691] Therefore, the multiple first openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPCFr, OPCFg, OPCFb of the color filter have four or more or are spaced at an angle of 45 degrees or less, while further changing the eccentricity of the ellipse, so that color separation of external light occurs less or a constant unclear diffraction pattern occurs regardless of the angle.

[0692] According to an embodiment, the major axis directions of the plurality of second openings OPCFr, OPCFg, OPCFb of the color filter may be formed at constant or irregular intervals.

[0693] although Fig.36 and Fig.37 Shown based on Fig.33 but can be similarly modified Fig. 27 or Fig.31 Embodiment of the invention.

[0694] Additional embodiments are included in which only the major axis direction of the ellipse is formed in various ways while keeping the eccentricity constant. Fig.36 and Fig.37 A rough comparison of the embodiments can be shown in Table 2 below.

[0695] [Table 2]

[0696]

[0697] At the same time, Fig. 27 , Fig.31 and Fig.33In the embodiment, the second opening OPCF of a color filter has an eccentricity.

[0698] However, according to the embodiment, as Fig.17 As shown in , the second opening OPCF of one color filter can be formed by merging at least two elliptical shapes having different eccentricities.

[0699] In the following, reference is made to Fig.38 , the first opening OP of the pixel defining layer 380 may have a circular shape, and the second opening OPCF of the color filter is an ellipse formed by merging at least two ellipse shapes having different eccentricities. An example of one of the embodiments having an ellipse shape will now be explained.

[0700] Fig.38 is a diagram showing a structure in which ellipses having different eccentricities are merged.

[0701] Fig.38 shows the use of Fig.17 An example in which the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 are arranged in various major axis directions by ellipsoid shapes merged in the same manner as in (C).

[0702] exist Fig.38 In the embodiment of the present invention, the second openings OPCFr, OPCFg, OPCFb of the color filter and the first openings OPr, OPg, OPb of the pixel defining layer 380 may be as follows: Fig. 27 shown in contact with each other.

[0703] However, according to the embodiment, as Fig.31 As shown in FIG. 1 , the second openings OPCFr, OPCFg, OPCFb of the color filter may be formed to be larger than the first openings OPr, OPg, OPb of the pixel defining layer 380, or as shown in FIG. Fig.33 As shown in FIG. 3 , the second openings OPCFr, OPCFg, OPCFb of the color filter may have a structure covering a portion of the first openings OPr, OPg, OPb of the pixel defining layer 380 .

[0704] exist Fig.38 In the embodiment of FIG. 1 , only one unit pixel is shown, and the one unit pixel includes one red opening OPr, OPCFr, one blue opening OPb, OPCFb, and two green openings OPg, OPCFg.

[0705] exist Fig.38In the embodiment, the first openings OPr, OPg, OPb of the pixel defining layer 380 are formed in a circular shape, and the second openings OPCFr, OPCFg, OPCFb of the color filter are formed in a merged elliptical shape, and the directions of the major axes of each may also be different.

[0706] like Fig.38 As shown in, an embodiment using an ellipse that is a combination of two ellipses having different eccentricities also uses the angles of the first openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPCFr, OPCFg, OPCFb of the color filter, the angle formed by the major axis can have 4 or more angles, and the angles formed by the major axis can be arranged at intervals of 45 degrees or less.

[0707] Furthermore, the eccentricity of the two ellipses used for the merge may vary, so the size of the merged ellipse may also vary.

[0708] Furthermore, according to an embodiment, two ellipses having different eccentricities for each color may be merged, and even if they are the same color, two ellipses having different eccentricities may be merged to form various ellipses.

[0709] Meanwhile, the first openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPCFr, OPCFg, OPCFb of the color filter may have a constant interval on a plane or a horizontal interval greater than 0 μm and less than or equal to 20 μm.

[0710] Next, we will look at the reflected light diffraction characteristics of an embodiment using an elliptical shape formed by merging two ellipses of different eccentricities.

[0711] Fig.39 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to another embodiment.

[0712] Fig.39 (A) shows an example in which the openings of each color have the same combined elliptical shape, but the major axis direction has 4 or more angles.

[0713] exist Fig.39 In (B), it is shown Fig.39 Diffraction characteristics of the reflected light in (A).

[0714] and Fig.35 Compared with the comparative example of (A), it can be seen that Fig.39 The diffraction characteristics of (B) have a blurred reflection diffraction pattern, the ring shape is unclear, and the separated colors are difficult to be recognized by the user.

[0715] result, Fig.39 The example shown in (A) can also have improved display quality compared with the comparative example.

[0716] Meanwhile, according to an embodiment, the second openings OPCFr, OPCFg, OPCFb of the color filter have a circular shape, and the first openings OPr, OPg, OPb of the pixel defining layer 380 have an elliptical shape or a shape similar to an ellipse, which will be referred to as Fig.40 Brief discussion.

[0717] Fig.40 is a plan view of a portion of a display panel according to another embodiment.

[0718] exist Fig.40 , only the first opening OP of one pixel defining layer 380 and the second opening OPCF of one color filter corresponding thereto are shown.

[0719] The second opening OPCF of the color filter has a circular shape, and the first opening OP of the pixel defining layer 380 has an elliptical shape.

[0720] In addition, the second opening OPCF of the color filter overlaps a portion of the first opening OP of the pixel defining layer 380 , and the remaining portion is covered by the light blocking region LB of the color filter.

[0721] As a result, the light emitting layer located within the first opening OP of the pixel defining layer 380 may be partially shielded by the light blocking region LB of the color filter.

[0722] exist Fig.40 , a portion of the first opening OP of the pixel defining layer 380 is shown as a dotted line to indirectly show that the corresponding portion is located under the light blocking region LB of the color filter and is shielded.

[0723] At the same time, Fig.40 In the embodiment, due to an error during an actual process, an area covered by the light blocking area LB of the color filter in the first opening OP of the pixel defining layer 380 may not be consistent at the upper and lower sides, and an area of ​​one side may be formed larger.

[0724] In addition, one side of the first opening OP of the pixel defining layer 380 may be located within or in contact with the second opening OPCF of the color filter, and only the other side may be shielded by the light blocking region LB of the color filter.

[0725] As in Fig.40 In the embodiment, if a portion of the first opening OP of the pixel defining layer 380 is covered by the light blocking region LB of the color filter, light emitted from the light emitting layer in the first opening OP may not be provided to the front, which may be disadvantageous in terms of light efficiency.

[0726] However, the size of the first opening OP of the pixel defining layer 380 is related to the lifetime of the light emitting layer located therein, so the size of the first opening OP may not be reduced in order to maintain the lifetime above a certain level.

[0727] According to an embodiment, the major axis directions of the first openings OP of the pixel defining layer 380 may be arranged in various manners, angles formed by the major axes may have 4 or more angles, and the angles formed by the major axes may be spaced at 45 degrees or less.

[0728] According to an embodiment, ellipses having different eccentricities may be formed into a merged shape.

[0729] The eccentricity of the two ellipses used for the merge can be varied, and the size of the merged ellipse can also be varied.

[0730] Furthermore, according to an embodiment, two ellipses having different eccentricities for each color may be merged, and even if they are the same color, two ellipses having different eccentricities may be merged to form various ellipses.

[0731] Meanwhile, the first opening OP of the pixel defining layer 380 and the second opening OPCF of the color filter corresponding thereto may have a horizontal gap of 0 μm or more and 20 μm or less.

[0732] Fig.40 The embodiment of can also be subjected to various modifications of Table 2.

[0733] Fig.40 An embodiment similar to the above Fig.33 In the embodiment, and because the interval between the two openings is not constant, the diffraction patterns produced can be different, and as each diffraction pattern is mixed, the overall diffraction pattern is formed to be blurred.

[0734] As a result, it becomes difficult for the user to recognize the diffraction pattern, and the degree of deterioration in display quality decreases.

[0735] Meanwhile, according to an embodiment, the second opening OPCF of the color filter has a circular shape, and the first opening OP of the pixel defining layer 380 has an elliptical shape, and the two openings are in contact or one opening is located inside the other opening.

[0736] In the above, Figure 6 As shown in FIG. 1 , the light blocking region LB of the color filter in which at least two color filters are stacked is explained with a focus on an embodiment in which three color filters are stacked.

[0737] However, according to an embodiment, the light blocking area LB of the color filter may be formed by stacking two color filters, which will Fig.41 discussed in.

[0738] Fig.41 is an enlarged cross-sectional view of a partial region of a light emitting display device according to another embodiment.

[0739] Fig.41 is with Figure 6 Corresponding figure, and only the color filters 230R, 230G, 230B and Figure 6 Therefore, the lower structure of the third sensing insulating layer 511 is different from Figure 6 The lower structure of the third sensing insulating layer 511 is the same.

[0740] In the following, we will explain Figure 6 The upper structure of the third sensing insulating layer 511 is different from the upper structure of the third sensing insulating layer 511 .

[0741] Reference Fig.41 , a light blocking layer that blocks visible light is not formed, and a blue color filter 230B and a red color filter 230R are sequentially stacked to block visible light.

[0742] The order in which the color filters are stacked may vary depending on the embodiment.

[0743] Specifically, the two filter-overlapping light blocking region LB of the color filter is composed of the overlapped blue filter 230B and the red filter 230R, and in some areas of the light blocking region LB of the color filter, there is also a portion where the green filter 230G is overlapped.

[0744] However, the green filter 230G is not formed to cover the light blocking region LB of the filter, so Figure 6 Unlike the embodiment of , this is an embodiment in which only two color filters form the light blocking region of the color filter.

[0745] The two filter-overlapping light blocking region LB of the color filter is located only in the region overlapping the pixel defining layer 380 on a plane, and one side of the light blocking region LB of the color filter is arranged inward from the side corresponding to the pixel defining layer 380 .

[0746] Only one color filter may be located in a region not including the light blocking region LB of the color filter, and light of the color of the color filter is transmitted to form a light transmitting region of the color filter or a second opening OPCF of the color filter.

[0747] The area of ​​the second opening OPCF is greater than the area of ​​the first opening OP of the pixel defining layer 380 , and the first opening OP of the pixel defining layer 380 on a plane may be located within the second opening OPCF of the color filter.

[0748] The light blocking region LB of the color filter overlaps the spacer 385 and the plurality of sensing electrodes 540 and 541 on a plane except for the pixel defining layer 380 .

[0749] Specifically, the light blocking region LB of the color filter is disposed inwardly at a distance g1 from the corresponding side of the pixel defining layer 380 , and the spacer 385 blocks the light of the color filter.

[0750] In addition, the plurality of sensing electrodes 540 and 541 are covered by the light blocking region LB of the color filter on a plane.

[0751] As a result, when viewed from the front of the display panel DP, the spacer 385 and the plurality of sensing electrodes 540 and 541 may not be visible because the spacer 385 and the plurality of sensing electrodes 540 and 541 are shielded by the light blocking region LB of the color filter.

[0752] According to an embodiment, the color filters 230R, 230G, and 230B may be replaced with a color conversion layer or may further include a color conversion layer.

[0753] The color conversion layer may include quantum dots.

[0754] With Fig.41 The embodiment of the cross-sectional structure shown in FIG. Fig.42 The planar structure shown in .

[0755] Fig.42 is a plan view of a portion of a display panel according to another embodiment.

[0756] Fig.42 is with Figure 7 The corresponding floor plan. Figure 7 Unlike the embodiment, the boundary of the green filter 230G is further shown outside the green second opening OPCFg in the second opening of the filter, thereby producing a green filter to clearly show that the green filter 230G has an island structure, and the boundary of the green filter 230G partially overlaps with the light blocking area LB of the filter.

[0757] Here, a separate boundary between the red color filter 230R and the blue color filter 230B is not shown, which means that the red color filter 230R and the blue color filter 230B are continuously formed at the boundary of the second opening of each color filter and the light blocking area LB of the color filter.

[0758] Although not in Fig.42 , but the borders of the color filters of different colors may be positioned around the second opening of the color filter such that only one color filter is positioned in the second opening of the color filter.

[0759] under, Fig.43An examination will show whether two color filters can be stacked to replace the role of the light blocking layer.

[0760] Fig.43 is a graph showing transmittance according to wavelength of a color filter.

[0761] Fig.43 230B is a graph of transmittance with respect to wavelength of each color filter 230R, 230G, and 230B, so that light of a higher wavelength is transmitted.

[0762] Reference Fig.43 , each of the color filters 230R, 230G, 230B has a transmittance of less than 10% for a portion other than a wavelength band transmitted therethrough, and when three or two color filters are stacked, it can be confirmed that there is almost no transmitted wavelength band.

[0763] Therefore, the role of the light blocking layer can be replaced by stacking at least two color filters, and the Figure 6 By stacking three color filters as shown in Fig.41 As shown in FIG, two color filters are stacked instead of a light blocking layer.

[0764] In the following, we will Fig.44 explain Fig.42 A modified embodiment of .

[0765] Fig.44 is a plan view of a portion of a display panel according to another embodiment.

[0766] Fig.44 An example is shown in which one unit pixel includes one red light emitting region, one green light emitting region, and one blue light emitting region.

[0767] Specifically, the pixel defining layer 380 includes each of red, green, and blue first openings OPr, OPg, and OPb, and red, green, and blue second openings OPCFr, OPCFg, and OPCFb of the color filter are included in each unit pixel.

[0768] exist Fig.44 , the boundary of the green color filter 230G having the island structure is further shown outside the green second opening OPCFg, and it can be confirmed that the boundary of the green color filter 230G partially overlaps the light blocking area LB of the color filter.

[0769] Fig.44 This embodiment is different from the embodiment in which the unit pixel includes four light emitting regions. Fig.42 Embodiment of the invention.

[0770] As a reference, in Fig.42In the embodiment of FIG. 1 , a unit pixel including two green light emitting regions, one blue light emitting region and one red light emitting region is shown.

[0771] In the following, reference is made to Fig.45 , shows a more detailed cross-sectional view of an embodiment in which the light blocking region LB of the color filters 230R, 230G, and 230B is formed by stacking and does not include a light blocking layer.

[0772] Fig.45 An embodiment is shown in which the light blocking region LB of the color filter is formed by stacking the blue color filter 230B and the red color filter 230R.

[0773] Fig.45 is a cross-sectional view of a light emitting display device according to another embodiment.

[0774] exist Fig.45 , in addition to the stacking structure of the display area DA, the stacking structure of the first assembly area EA1 is also shown.

[0775] The light emitting display device may be mainly divided into a lower panel layer and an upper panel layer. The lower panel layer is a portion where light emitting diodes and pixel circuits constituting pixels are located, and may even include an encapsulation layer 400 covering the lower panel layer.

[0776] Here, the pixel circuit part includes the second organic layer 182 and the third organic layer 183 , and refers to the lower portion thereof, the light emitting diode is the upper portion of the third organic layer 183 , and is located on the bottom of the encapsulation layer 400 .

[0777] The structure located on the top of the encapsulation layer 400 may correspond to an upper panel layer.

[0778] Reference Fig.45 , the metal layer BML is located on the substrate 110 .

[0779] The substrate 110 may include a material that has a rigid property and does not bend, such as glass, or may include a flexible material that can bend, such as plastic or polyimide.

[0780] In the case of flexible substrates, such as Fig.45 As shown in , it may have a double-layer structure of polyimide and a barrier layer formed thereon of an inorganic insulating material.

[0781] The metal layer BML may be formed in a position overlapping a channel of the driving transistor in a plane among the subsequent first semiconductor layers, and is also referred to as a lower barrier layer.

[0782] The metal layer BML may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti).

[0783] The buffer layer 111 covers the substrate 110 and the metal layer BML.

[0784] The buffer layer 111 is used to block impurities from penetrating into the first semiconductor layer ACT (P-Si), and is composed of silicon oxide (SiO x ), Silicon Nitride (SiN x ), Silicon Oxynitride (SiON x ) and other inorganic insulating materials.

[0785] A first semiconductor layer ACT (P—Si) formed of a silicon semiconductor (eg, a polycrystalline semiconductor (P—Si)) is located on the buffer layer 111 .

[0786] 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 thereof.

[0787] Here, the polycrystalline transistor LTPS TFT may include a driving transistor and various switching transistors or compensation transistors.

[0788] In addition, the first semiconductor layer ACT (P-Si) has regions on both sides of the channel which have conductive layer characteristics by plasma treatment or doping and can function as first and second electrodes of the driving transistor.

[0789] The first gate insulating layer 141 may be positioned on the first semiconductor layer ACT (P—Si).

[0790] The first gate insulating layer 141 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiON x ) of an inorganic insulating layer.

[0791] A first gate conductive layer including a gate electrode GAT1 of the polycrystalline transistor LTPS TFT may be positioned on the first gate insulating layer 141 .

[0792] The first gate conductive layer may be formed with a first scan line or an emission control line in addition to a gate electrode of the polycrystalline transistor LTPS TFT.

[0793] The first 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 a single layer or a plurality of layers.

[0794] After forming the first gate conductive layer, a plasma treatment or a doping process may be performed to make the exposed region of the first semiconductor layer conductive.

[0795] That is, a portion of the first semiconductor layer ACT (P-Si) masked by the first gate conductive layer is not doped, and a portion of the first semiconductor layer ACT (P-Si) not covered by the first gate conductive layer may have the same characteristics as the conductive layer.

[0796] The second gate insulating layer 142 may be positioned on the first gate conductive layer and the first gate insulating layer 141 .

[0797] The second gate insulating layer 142 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiON x ) of an inorganic insulating layer.

[0798] A second gate conductive layer including one electrode GAT2 (Cst) of the storage capacitor Cst and a lower barrier layer GAT2 (BML) of the oxide transistor Oxide TFT may be positioned on the second gate insulating layer 142 .

[0799] The lower blocking 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 block light or electromagnetic interference provided from the bottom to the channel.

[0800] Meanwhile, one electrode GAT2 (Cst) of the storage capacitor Cst overlaps the gate electrode GAT1 of the driving transistor to form the storage capacitor Cst.

[0801] According to an embodiment, the second gate conductive layer may further include a scan line, a control line or a voltage line.

[0802] 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 a single layer or a multilayer.

[0803] A first interlayer insulating layer 161 may be located on the second gate conductive layer.

[0804] The first interlayer insulating layer 161 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiON x ) of the inorganic insulating layer. According to the embodiment, the inorganic insulating material may be formed thickly.

[0805] 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 .

[0806] The third gate insulating layer 143 may be located on the oxide semiconductor layer ACT2 (IGZO).

[0807] The third gate insulating layer 143 may be positioned on the entire surface of the oxide semiconductor layer ACT2 (IGZO) and the first interlayer insulating layer 161 .

[0808] The third gate insulating layer 143 may include silicon oxide (SiO x ), Silicon Nitride (SiN x ) or silicon oxynitride (SiON x ) of an inorganic insulating layer.

[0809] 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 .

[0810] A gate electrode of the oxide transistor Oxide TFT may overlap a channel of the oxide semiconductor layer ACT2 (IGZO).

[0811] 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 barrier layer GAT2 (BML) of the oxide transistor Oxide TFT.

[0812] 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 a single layer or a plurality of layers.

[0813] The second interlayer insulating layer 162 may be located on the third gate conductive layer GAT3 .

[0814] The second interlayer insulating layer 162 may have a single layer or a plurality of layers.

[0815] 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, and may include an organic material according to an embodiment.

[0816] The first data conductive layer SD1 is positioned on the second interlayer insulating layer 162 and includes a connection electrode that may be connected to the first region and the second region of each of the polycrystalline transistor LTPS TFT and the oxide transistor Oxide TFT.

[0817] The first data conductive layer SD1 may include a metal or a metal alloy such as aluminum (Al), copper (Cu), molybdenum (Mo), or titanium (Ti), and may be composed of a single layer or a plurality of layers.

[0818] The first organic layer 181 may be located on the first data conductive layer SD1 .

[0819] The first organic layer 181 may be an organic insulating layer including an organic material, and the organic material includes one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenol resin.

[0820] A second data conductive layer including the anode connection electrode ACM2 may be positioned on the first organic layer 181 .

[0821] The second data conductive layer may include a data line or a driving voltage line.

[0822] 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 a single layer or a multi-layer.

[0823] Over the second data conductive layer, a second organic layer 182 and a third organic layer 183 are positioned, and an anode connection opening OP4 is defined in the second organic layer 182 and the third organic layer 183 .

[0824] The anode connection electrode ACM2 is electrically connected to the anode Anode through the anode connection opening OP4.

[0825] The second organic layer 182 and the third organic layer 183 may be organic insulating layers, and may include one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenol resin.

[0826] According to an embodiment, the third organic layer 183 may be omitted.

[0827] The pixel defining layer 380 may be located on the anode Anode and have a first opening OP exposing the anode Anode and cover at least a portion of the anode Anode.

[0828] The pixel defining layer 380 may be a black pixel defining layer formed of a black organic material to prevent light applied from the outside from being reflected back to the outside. According to an embodiment, the pixel defining layer 380 may be formed of a transparent organic material.

[0829] Therefore, according to an embodiment, the pixel defining layer 380 may include a negative black organic material and a black pigment.

[0830] The spacer 385 is located on the pixel defining layer 380 .

[0831] The spacer 385 may include a first portion 385 - 1 that is tall and narrow and a second portion 385 - 2 that is short and wide.

[0832] Unlike the pixel defining layer 380 , the spacer 385 may be formed of a transparent organic insulating material.

[0833] According to an embodiment, the spacer 385 may be formed of a positive transparent organic material.

[0834] The functional layer FL and the cathode Cathode are sequentially formed on the anode Anode, the spacer 385, and the pixel defining layer 380, and in the display area DA and the first assembly area EA1, the functional layer FL and the cathode Cathode may be located in all areas.

[0835] The light emitting layer EML is located between the functional layers FL, and the light emitting layer EML may be located only within the first opening OP of the pixel defining layer 380 .

[0836] Hereinafter, the functional layer FL and the light emitting layer EML may be combined to refer to an intermediate layer.

[0837] The functional layer FL may include at least one auxiliary layer such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer, the hole injection layer and the hole transport layer may be located under 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.

[0838] The encapsulation layer 400 is located on the cathode.

[0839] The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and according to an embodiment, may have a triple-layer structure including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer.

[0840] The encapsulation layer 400 may serve to protect the light emitting layer EML from moisture or oxygen that may enter from the outside.

[0841] According to an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[0842] Sensing insulation layers 501 , 510 , 511 and a plurality of sensing electrodes 540 , 541 are positioned on the encapsulation layer 400 for touch detection.

[0843] exist Fig.45 In the embodiment of FIG. 5 , two sensing electrodes 540 and 541 may be used to detect touch in a capacitive manner.

[0844] Specifically, the first sensing insulating layer 501 is formed on the encapsulation layer 400 , and a plurality of sensing electrodes 540 and 541 are formed thereon.

[0845] The plurality of sensing electrodes 540 and 541 may be insulated with the second sensing insulating layer 510 interposed therebetween, and some of them may be electrically connected through openings located in the second sensing insulating layer 510 .

[0846] Here, the sensing electrodes 540 and 541 are made of a metal or a metal alloy such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), and tantalum (Ta), and they may include a single layer or multiple layers.

[0847] The third sensing insulating layer 511 is formed on the sensing electrode 540 .

[0848] The color filters 230R, 230G, and 230B are positioned on the third sensing insulating layer 511 .

[0849] exist Fig.45 In the embodiment, the light blocking layer is not included, and the role of the light blocking layer is performed by the stacked color filters 230R, 230B, and the stacked color filters 230R, 230B can be positioned to overlap with the sensing electrodes 540, 541 on the plane.

[0850] The overlapped color filters 230R and 230B have second openings OPCF, and the second openings OPCF of the overlapped color filters 230R and 230B overlap the first openings OP of the pixel defining layer 380 on a plane.

[0851] In addition, the second openings OPCF of the stacked color filters 230R and 230B may be wider than the first openings OP of the pixel defining layer 380 .

[0852] As a result, the anode electrode Anode overlapped with (ie, exposed by) the first opening OP of the pixel defining layer 380 does not overlap with the color filters 230R and 230B, and thus may have a structure that is not shielded in a plan view.

[0853] This is to ensure that the anode electrode Anode and the light emitting layer EML capable of displaying an image are not shielded by the stacked color filters 230R and 230B and the sensing electrodes 540 and 541 .

[0854] In addition, the stacked color filters 230R and 230B have a structure overlapping the anode connection opening OP4 in plane.

[0855] A color filter may be located within the second opening OPCF of the stacked color filters 230R and 230B, and Fig.45In the figure, a green color filter 230G is positioned.

[0856] According to an embodiment, the color filters 230R, 230G, and 230B may be replaced with a color conversion layer or may further include a color conversion layer.

[0857] The color conversion layer may include quantum dots.

[0858] A planarization layer 550 covering the color filters 230R, 230G, and 230B is located on the color filters 230R, 230G, and 230B.

[0859] The planarization layer 550 is used to planarize the upper surface of the light-emitting display device, 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 phenol resin.

[0860] According to an embodiment, a low-refractive layer and an additional planarizing layer may be further positioned on the planarizing layer 550 to improve front visibility and light output efficiency of the display device.

[0861] The light may be refracted and emitted toward the front through the low refractive layer and the additional planarizing layer having a high refractive property.

[0862] In this case, according to an embodiment, the planarization layer 550 may be omitted, and the low-refractive layer and the additional planarization layer may be directly located on the color filter.

[0863] In this embodiment, no polarizer is included on top of the planarization layer 550 .

[0864] In other words, the polarizer may play a role in preventing display quality from being deteriorated when external light is incident and reflected by the anode or the like and is visible to the user.

[0865] However, in this embodiment, the side of the anode Anode is covered by the pixel defining layer 380 to reduce the degree of reflection from the anode Anode, and the stacked color filters 230R and 230B are also formed to reduce the degree of incident light; in short, the display device has included a structure to prevent degradation of display quality due to reflection.

[0866] Therefore, there is no need to separately form a polarizer on the front surface of the display panel DP.

[0867] At the same time, Fig.45 , in addition to the stack structure of the display area DA, a cross-sectional structure of the first assembly area EA1 is shown, the first assembly area EA1 being formed to allow light to be transmitted through a portion of the display area DA.

[0868] 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).

[0869] Here, the first optical sensor area OPS1 is an area formed to allow light to pass therethrough by having additional openings OP-1, OPCF-1, and the additional openings OP-1, OPCF-1 are positioned so as not to overlap in a plane with the black pixel defining layer 380 and the light blocking area LB of the color filter formed by stacking at least two color filters.

[0870] In contrast, the second optical sensor area OPS2 is an area formed to overlap on a plane with the black pixel defining layer 380 and the light blocking area LB of the color filter formed by overlapping at least two color filters so that light does not pass therethrough.

[0871] Both the first optical sensor area OPS1 and the second optical sensor area OPS2 of the first element area EA1 may not include a layer blocking light, such as a metal layer or a semiconductor layer.

[0872] For reference, the first optical element (ES1; ref. Figure 2 ) is located at the rear side of the first assembly area EA1, and the front side of the light-emitting display device can be detected by the first optical sensor area OPS1 located in the first assembly area EA1.

[0873] Specifically, the layer structure of the first assembly area EA1 is as follows.

[0874] A buffer layer 111 as an inorganic insulating layer is positioned on the substrate 110 , and a first gate insulating layer 141 and a second gate insulating layer 142 as inorganic insulating layers are sequentially positioned thereon.

[0875] 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 .

[0876] 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.

[0877] A functional layer FL, over which a cathode may be formed, may be located on the third organic layer 183 .

[0878] The encapsulation layer 400 is positioned on the cathode, and the sensing insulating layers 501 , 510 , and 511 are sequentially positioned on the top of the cathode.

[0879] The encapsulation layer 400 may have a three-layer structure sequentially including an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer.

[0880] In addition, the sensing insulating layers 501 , 510 , and 511 may all be inorganic insulating layers.

[0881] The planarization layer 550 may be located on the sensing insulation layers 501 , 510 , and 511 .

[0882] In the first element 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 positioned.

[0883] In addition, the light emitting layer EML and the sensing electrodes 540 and 541 are not formed.

[0884] Furthermore, in the first assembly area EA1, additional openings OP-1, OPCF-1 are formed in the pixel defining layer 380 and the light blocking area LB of the color filter, respectively, so that the pixel defining layer 380 and the color filter may not be formed.

[0885] As a result, light may pass through the first optical sensor area OPS1.

[0886] On the other hand, the second optical sensor area OPS2 of the first assembly area EA1 may have a structure in which the additional openings OP-1, OPCF-1 are not positioned so that light is not transmitted due to the overlapped pixel defining layer 380 and the light blocking area LB of the color filter.

[0887] In the above, the embodiment has been explained in which a total of three organic layers are formed, and the anode connection opening is defined in the second organic layer and the third organic layer.

[0888] 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 located away from the substrate, and the lower organic layer opening may be located in the lower organic layer.

[0889] Although the embodiments have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements may be made by those skilled in the art using the basic concept of the present invention defined in the claims.

[0890] <Description of label>

[0891] 230R, 230G, 230B: color filter 380: pixel defining layer

[0892] OP, OPr, OPg, OPb: first opening of the pixel defining layer

[0893] OPCF, OPCFr, OPCFg, OPCFb: Second opening of the color filter

[0894] Anode: Anode Cathode: Cathode

[0895] EML: Light-emitting layer FL: Functional layer

[0896] 1000: Display device DP: Display panel

[0897] 110: substrate 180, 181, 182, 183: organic layer

[0898] 141, 142, 143: Gate insulating layer 161, 162: Interlayer insulating layer

[0899] 385, 385-1, 385-2: spacers 400, 401, 402, 403: encapsulation layers

[0900] 501, 510, 511: sensing insulating layer 540, 541: sensing electrodes

[0901] 550: planarization layer DA, DA1-1, DA1-2: display area

[0902] EA, EA1, EA2: Component area OP-1, OPCF-1: Additional openings.

Claims

1. A light-emitting display device, comprising: substrate; a plurality of anodes disposed on the substrate; A pixel defining layer, defining a plurality of first openings respectively overlapping the plurality of anodes; A plurality of light-emitting layers are respectively located in the plurality of first openings of the pixel defining layer; a cathode, disposed on the plurality of light-emitting layers and the pixel defining layer; An encapsulation layer, located on the cathode; as well as a plurality of color filters corresponding to different colors and located on the encapsulation layer, wherein the plurality of color filters define a plurality of second openings, only one color filter of the plurality of color filters is located in each of the plurality of second openings, and the plurality of color filters include a light blocking region in which at least two color filters of the plurality of color filters are overlapped in a plan view, and At least one first opening among the plurality of first openings of the pixel defining layer and at least one second opening among the plurality of second openings of the plurality of color filters each have an elliptical shape in the plan view.

2. The light emitting display device according to claim 1, wherein: The plurality of first openings include four or more major axes, The plurality of second openings include four or more major axes, and An angle formed by major axes of two first openings of the elliptical shape among the plurality of first openings or an angle formed by major axes of two second openings of the elliptical shape among the plurality of second openings is 45 degrees or less.

3. The light-emitting display device according to claim 1, wherein: Each of the plurality of first openings or each of the plurality of second openings has an eccentricity of 0.2 to 0.

85.

4. The light emitting display device according to claim 1, wherein: The plurality of first openings and the plurality of second openings overlapped with the plurality of first openings in the plan view are formed at regular intervals in the plan view.

5. The light emitting display device according to claim 1, wherein: A first opening among the plurality of first openings and a second opening among the plurality of second openings overlapping the first opening in the plan view have a horizontal gap greater than 0 μm and less than or equal to 20 μm.

6. The light emitting display device according to claim 1, wherein: A first opening among the plurality of first openings and a second opening among the plurality of second openings overlapping the first opening in the plan view have the same major axis direction or an angle of 20 degrees or less between their major axis directions.

7. The light emitting display device according to claim 1, wherein: Some of the plurality of first openings or the plurality of second openings have a shape in which portions of at least two elliptical shapes having different eccentricities are merged in the plan view.

8. The light emitting display device according to claim 7, wherein: The plurality of first openings or some of the plurality of second openings have a planar shape formed by cutting a first ellipse having a first eccentricity and a second ellipse having a second eccentricity in a first direction, and then merging the cut portion of the first ellipse and the cut portion of the second ellipse.

9. The light emitting display device according to claim 1, wherein: In the light blocking regions of the plurality of color filters, a blue color filter and a red color filter overlap each other, and Each of the plurality of second openings overlaps one of the blue color filter, the red color filter, and the green color filter.

10. A light-emitting display device, comprising: substrate; a plurality of anodes disposed on the substrate; A pixel defining layer, defining a plurality of first openings respectively overlapping the plurality of anodes; A plurality of light-emitting layers are respectively located in the plurality of first openings of the pixel defining layer; a cathode, disposed on the plurality of light-emitting layers and the pixel defining layer; An encapsulation layer, located on the cathode; as well as a plurality of color filters corresponding to different colors and located on the encapsulation layer, wherein the plurality of color filters define a plurality of second openings, only one color filter of the plurality of color filters is located in each of the plurality of second openings, and the plurality of color filters include a light blocking region in which at least two color filters of the plurality of color filters are overlapped in a plan view, and In the plan view, a first opening among the multiple first openings of the pixel defining layer and one of the second openings overlapping the first opening among the multiple second openings of the multiple color filters have a circular shape, and the other of the first opening and the second opening has an elliptical shape.

11. The light emitting display device according to claim 10, wherein: Some of the plurality of first openings or the plurality of second openings have the elliptical shape and include four or more major axes, and The angle formed by the major axis is 45 degrees or less.

12. The light emitting display device according to claim 10, wherein: The elliptical shape has an eccentricity of 0.2 to 0.

85.

13. The light emitting display device according to claim 10, wherein: The first opening among the plurality of first openings and the second opening among the plurality of second openings overlapping the first opening in the plan view have a horizontal gap greater than 0 μm and less than or equal to 20 μm.

14. The light emitting display device according to claim 10, wherein: The elliptical shape is a shape in which parts of at least two elliptical shapes having different eccentricities are merged in the plan view.

15. The light emitting display device according to claim 14, wherein: The elliptical shape is a planar shape formed by cutting a first ellipse having a first eccentricity and a second ellipse having a second eccentricity in a first direction and then merging the cut portion of the first ellipse and the cut portion of the second ellipse.

16. The light emitting display device according to claim 10, wherein: In the light blocking regions of the plurality of color filters, a blue color filter and a red color filter overlap each other, and Each of the plurality of second openings overlaps one of the blue color filter, the red color filter, and the green color filter.

17. The light emitting display device according to claim 10, wherein: The first opening has the circular shape, and the second opening has the elliptical shape, and In the plan view, boundaries of the first opening and the second opening contact each other.

18. The light emitting display device according to claim 10, wherein: The first opening has the circular shape, and the second opening has the elliptical shape, and In the plan view, the first opening is located within the second opening.

19. The light emitting display device according to claim 10, wherein: The first opening has the circular shape, and the second opening has the elliptical shape, and In the plan view, a portion of the first opening overlaps the second opening, and a remaining portion of the first opening overlaps the light blocking regions of the plurality of color filters.

20. The light emitting display device according to claim 10, wherein: The first opening has the oval shape, and the second opening has the circular shape.

Images