Light emitting display device including shaped light emitting area

Abstract

A light emitting display device is disclosed. The light emitting display device includes: a substrate; an anode disposed on the substrate; a pixel defining layer having a first opening overlapping each of the anodes; light emitting layers each disposed within the first opening of the pixel defining layer; a cathode disposed on the light emitting layer and the pixel defining layer; the packaging layer is arranged on the cathode; and a light blocking layer disposed on the encapsulation layer and including second openings each overlapping the first openings. One unit pixel includes two light emitting regions of a first color, one light emitting region of a second color, and one light emitting region of a third color. The light-emitting regions of the first color are arranged in a diamond shape, the light-emitting regions of the second color and the light-emitting regions of the third color are arranged in a rectangular shape, and the at least one first opening and / or the at least one second opening have an elliptical shape.

Description

[0001] This application claims the priority of Korean Patent Application No. 10-2023-0110506 filed on August 23, 2023, in the Korean Intellectual Property Office and Korean Patent Application No. 10-2023-0174666 filed on December 5, 2023, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a light emitting display device, and more particularly, to a light emitting display device including a shaped light emitting area. Background Art

[0003] A display device is a device that displays an image on a screen. Examples of display devices commonly used today include a liquid crystal display (LCD) and an organic light emitting diode (OLED) display.

[0004] These display devices are used in various electronic devices such as mobile phones, navigation devices, digital cameras, e-book readers, portable game consoles, and various computing terminals.

[0005] Display devices, such as organic light emitting display devices, may have structures that can be bent or folded to a significant degree without breaking or otherwise suffering damage. These so-called bendable display devices may include flexible substrates.

[0006] In addition, in small electronic devices such as mobile phones, optical elements such as cameras and optical sensors may be disposed in a bezel area around a display area. However, as the size of display screens increases and the size of the area surrounding the display area gradually decreases, technologies are being developed that allow optical elements to be located on the back side of the display area (e.g., behind the display area) rather than in the bezel. Summary of the invention

[0007] A light-emitting display device includes: a substrate; a plurality of anodes disposed on the substrate; a pixel-defining layer having a plurality of first openings respectively overlapping the plurality of anodes; a plurality of light-emitting layers respectively disposed 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 disposed on the cathode; and a light-blocking layer disposed on the encapsulation layer and including a plurality of second openings respectively overlapping the plurality of first openings. A unit pixel includes four light-emitting regions, and the four light-emitting regions include two light-emitting regions of a first color, a light-emitting region of a second color, and a light-emitting region of a third color. The light-emitting regions of the first color are arranged in a rhombus shape. The light-emitting regions of the second color and the light-emitting regions of the third color are both arranged in a rectangular shape, and at least one of the plurality of first openings of the pixel-defining layer and / or at least one of the plurality of second openings of the light-blocking layer has an elliptical shape.

[0008] The elliptical shape includes four or more major axis angles, and the angles formed by the major axis directions of the elliptical shape may be arranged at intervals of 45 degrees or less.

[0009] The elliptical shape may have an eccentricity in the range of 0.2 to 0.85.

[0010] The first opening and the second opening overlapping the first opening may have a horizontal gap in a range of greater than 0 μm and less than or equal to 20 μm.

[0011] The elliptical shape may have a plane shape in which at least two elliptical shapes having different plane eccentricities are merged.

[0012] The elliptical shape may have a plane 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 combining them.

[0013] Both the first opening of the pixel defining layer and the second opening of the light blocking layer may have an elliptical shape.

[0014] One of the first opening of the pixel defining layer and the second opening of the light blocking layer may have a circular shape, and the other may have an elliptical shape.

[0015] In a plan view, the first opening has a circular shape, the second opening has an elliptical shape, and the first opening and the second opening may contact each other.

[0016] The light emitting display device may further include a plurality of color filters filling each of the plurality of second openings.

[0017] A light-emitting display device includes: a substrate; a plurality of anodes disposed on the substrate; a pixel defining layer having a plurality of first openings respectively overlapped with the plurality of anodes; a plurality of light-emitting layers respectively disposed 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 disposed on the cathode; and a plurality of color filters corresponding to different colors and disposed on the encapsulation layer. Two or more of the plurality of color filters are overlapped in the light blocking region of the color filter, and the plurality of color filters include a plurality of second openings in each of which only one of the plurality of color filters is disposed. A unit pixel includes four light-emitting regions. The four light-emitting regions include two light-emitting regions of the first color and one of the remaining second color light-emitting regions and the third color light-emitting regions, and the light-emitting regions of the first color are arranged in a rhombus shape. The light-emitting regions of the second color and the light-emitting regions of the third color are both arranged in a rectangular shape. At least one of the plurality of first openings of the pixel defining layer and / or at least one of the plurality of second openings of the color filter has an elliptical shape.

[0018] The elliptical shape includes four or more major axis angles, and the angles formed by the major axis directions of the elliptical shape may be arranged at intervals of 45 degrees or less.

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

[0020] The first opening and the second opening overlapping the first opening may have a horizontal gap in a range of greater than 0 μm and less than or equal to 20 μm.

[0021] The elliptical shape may have a plane shape in which at least two elliptical shapes having different plane eccentricities are merged.

[0022] The elliptical shape may have a plane 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 combining them.

[0023] In the light blocking region of the color filter, a blue color filter and a red color filter overlap, 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] Both the first opening of the pixel defining layer and the second opening of the color filter may have an elliptical shape.

[0025] One of the first opening of the pixel defining layer and the second opening of the color filter may have a circular shape, and the other may have an elliptical shape.

[0026] In a plan view, the first opening has a circular shape, the second opening has an elliptical shape, and the first opening and the second opening may contact each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] A more complete understanding of the present disclosure and its many attendant aspects will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings.

[0028] Figure 1 is a schematic perspective view showing a use state of the display device according to the embodiment.

[0029] Figure 2 is an exploded perspective view of a display device according to an embodiment.

[0030] Figure 3 is a block diagram of a display device according to an embodiment.

[0031] Figure 4 is a perspective view schematically showing a light emitting display device according to an embodiment.

[0032] Figure 5 is an enlarged plan view of a partial region of a light emitting display device according to an embodiment.

[0033] Figure 6 is a schematic cross-sectional view of a display panel according to an embodiment.

[0034] Figures 7 to 9 is a plan view of a portion of a display panel according to an embodiment.

[0035] Fig.10 is a plan view of a portion of a display panel according to a comparative example.

[0036] Fig.11 is a comparison example and Figures 7 to 9 Photograph of the reflective properties of an example.

[0037] Fig.12 is a diagram showing the reflection characteristics of a light-emitting display device according to angles.

[0038] Fig.13 are diagrams showing various angle arrangements according to an embodiment.

[0039] Fig.14 It is a photo of the reflective properties according to the angle.

[0040] Fig.15 and Fig.16 is a diagram showing reflection characteristics according to eccentricity.

[0041] Fig.17 and Fig.18 : is a figure which shows the structure which combined the ellipses which have different eccentricities.

[0042] Fig.19 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0043] Fig. 20 is a plan view of a portion of a display panel according to an embodiment.

[0044] Fig.21 and Fig. 22 is a diagram showing reflection characteristics according to eccentricity.

[0045] Figure 23 to Figure 25 is a plan view of a portion of a display panel according to another embodiment.

[0046] Fig.26 is a plan view showing a configuration of a unit pixel of one of the display panels according to the embodiment.

[0047] Fig. 27 and Fig.28 is a diagram showing the effect according to the pixel arrangement.

[0048] Fig.29 and Fig.30 is a plan view of a portion of a display panel according to an embodiment.

[0049] Fig.31 is a comparison example and Fig.30 Photograph of the reflective properties of an example.

[0050] Fig.32 Arranged at various angles Fig.29 A plan view of a portion of a display panel in an embodiment.

[0051] Fig.33 and Fig.34 is a plan view of a portion of a display panel according to an embodiment.

[0052] Fig.35 and Fig.36 is a plan view of a portion of a display panel according to an embodiment.

[0053] Fig.37 is a comparison example and Fig.36 Photograph of the reflective properties of an example.

[0054] Fig.38 and Fig.39 is a plan view of a portion of a display panel according to an embodiment.

[0055] Fig.40 is a diagram showing a structure in which ellipses having different eccentricities are combined.

[0056] Fig.41 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0057] Fig.42 is a plan view of a portion of a display panel according to an embodiment.

[0058] Fig.43 is a plan view of a display area including a color filter according to an embodiment.

[0059] Fig.44 and Fig.45 is a schematic cross-sectional view of a display panel according to an embodiment.

[0060] Fig.46 is a plan view showing a color filter of a display area according to an embodiment.

[0061] Fig.47 is a plan view of a portion of a display panel according to an embodiment.

[0062] Fig.48 is a graph showing the transmittance of a color filter according to wavelength.

[0063] Fig.49 and Fig.50 is a cross-sectional view of a light emitting display device according to an embodiment. DETAILED DESCRIPTION

[0064] Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[0065] The present invention may be embodied in many different forms and is not necessarily limited to the embodiments described herein.

[0066] In order to clearly explain the present invention, parts irrelevant to the description may be omitted, and the same or similar components may be assigned the same reference numerals throughout the specification and the drawings.

[0067] In addition, although each of the drawings may represent one or more specific embodiments of the present disclosure drawn to scale, so that relative lengths, thicknesses, and angles can be inferred therefrom, it will be understood that the present invention is not necessarily limited to the relative lengths, thicknesses, and angles shown. These values ​​may be changed within the spirit and scope of the present disclosure, for example, to allow for manufacturing limitations, etc.

[0068] In the drawings, the thickness of each layer may be exaggerated for clarity.

[0069] In addition, when a component such as a layer, film, region, panel, or assembly is referred to as being “on” or “on” another component, it not only means when it is “directly on” the other component but also when there is another component therebetween.

[0070] In contrast, when an element is referred to as being "directly on top of" another element, it means there are no other elements therebetween.

[0071] Additionally, “above” or “on” a reference component means positioned above or below the reference component, and does not necessarily mean positioned “above” or “on” the reference component in a direction opposite to gravity.

[0072] In addition, throughout the specification, unless specifically stated otherwise, when a part is referred to as “comprising” a certain component, it means that it may further include other components rather than excluding other components.

[0073] In addition, throughout the specification, when reference is made to "in a plan view", this means when the target portion is viewed from above, and when reference is made to "in section", this means when the section of the target portion is cut vertically and viewed from the side.

[0074] Furthermore, throughout the specification, when something is referred to as being “connected”, it not only means that two or more components are directly connected, but also includes the case where two or more components are indirectly connected via other components, the case where they are physically connected or electrically connected, or even the case where components that are referred to by different names according to their positions or functions but are substantially integrated are connected to each other.

[0075] In addition, throughout the specification, when a part such as a wiring, layer, film, region, board or component is referred to as "extending in a first direction or a second direction", this refers not only to a straight line extending in that direction, but also to a structure that extends along the first direction or the second direction as a whole and also includes a structure that is bent at a certain portion, has a zigzag structure, or extends while including a bent structure.

[0076] In addition, the electronic devices included here (for example, mobile phones, TVs, monitors, laptop computers, etc.) are not excluded from the scope of rights of this specification, and the electronic devices include display devices, display panels, etc. described in this specification or display devices, display panels, etc. manufactured by the manufacturing methods described in this specification.

[0077] Next, we will Figures 1 to 3 Check the schematic structure of the display device.

[0078] 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.

[0079] Reference Figure 1 The display device 1000 according to the embodiment is a device that displays moving images or still images, and can be used in mobile phones, smart phones, tablet personal computers or portable electronic devices (such as communication terminals, electronic notebooks, e-book readers, portable multimedia players (PMP), navigation systems, ultra mobile PCs (UMPCs)) as well as televisions, laptop computers, computer monitors, digital billboards, Internet of Things (IOT) devices, etc., and it can be used as a display screen for various other products.

[0080] In addition, according to one embodiment, the display device 1000 is mounted on a wearable device such as a smart watch, a watch phone, a glasses type display, and a head mounted display (HMD).

[0081] In addition, according to one embodiment, the display device 1000 includes a dashboard of a car, a central information display (CID) placed on the center instrument panel or dashboard of the car, a room mirror display (a display replacing the side-view mirror of the car), and a display placed on the back of the front seat that can be used as an entertainment device for the back seat of the car.

[0082] For ease of explanation, Figure 1 The display device 1000 used as a smart phone is shown.

[0083] 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 .

[0084] 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.

[0085] Images may include static (eg, still) images as well as dynamic (eg, moving) images.

[0086] In the present 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.

[0087] 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.

[0088] 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.

[0089] According to one embodiment, the display device 1000 can detect a user input (eg, a finger). Figure 1 touch of the hand shown in ).

[0090] The user's input may include various types of external inputs, such as touch, light, heat, or pressure of a part of the user's body.

[0091] In one embodiment, the user's input is shown with the user's hand applied to the front side.

[0092] However, the present invention is not necessarily limited thereto.

[0093] 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 side of the display apparatus 1000 according to the structure of the display apparatus 1000 .

[0094] Reference Figure 1 and Figure 2, the display device 1000 may include a cover window WU, a housing HM, a display panel (or referred to as a light emitting display panel) DP, and an optical element ES.

[0095] In one embodiment, the cover window WU and the housing HM may be combined to form the exterior of the display device 1000 .

[0096] The cover window WU may include an insulating panel.

[0097] For example, the cover window WU may be made of glass, plastic, or a combination thereof.

[0098] The front side of the cover window WU may define the front side of the display device 1000 .

[0099] The transmission area TA may be an optically transparent area.

[0100] For example, the transmission area TA may be an area having a visible light transmittance of about 90% or more.

[0101] The blocking area BA may define the shape of the transmission area TA.

[0102] The blocking area BA is adjacent to the transmission area TA and may at least partially surround the transmission area TA.

[0103] The blocking area BA may be an area having relatively low light transmittance compared with the transmission area TA.

[0104] The blocking area BA may include an opaque material that substantially blocks light.

[0105] The barrier area BA may have a predetermined color.

[0106] 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 covering or coloring the transparent substrate.

[0107] The display panel DP may include display pixels (also referred to as pixels) PX displaying an image and a driver 50 , and the display pixels PX are positioned in the display area DA and the assembly area EA.

[0108] The display panel DP may include a front surface including a display area DA and a non-display area PA.

[0109] In one embodiment, the display area DA and the assembly area EA are areas displaying images and including pixels, and at the same time, a touch sensor which may be an area detecting an external input may be positioned in an upper direction of the pixels in the third direction DR3 .

[0110] 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.

[0111] For example, the transmission area TA may overlap the front surfaces of the display area DA and the assembly area EA, or may overlap at least a portion of the display area DA and the assembly area EA.

[0112] Therefore, the user may view an image through the transmissive area TA or provide an external input based on the image.

[0113] However, the present invention is not necessarily limited thereto.

[0114] For example, an area where an image is displayed and an area where an external input is detected may be separated from each other.

[0115] The non-display area PA of the display panel DP may at least partially overlap the blocking area BA of the cover window WU.

[0116] The non-display area PA may be an area covered by the blocking area BA.

[0117] The non-display area PA is adjacent to the display area DA, and may at least partially surround the display area DA.

[0118] An image is not displayed in the non-display area PA, and a driving circuit or driving wiring for driving the display area DA may be disposed.

[0119] The non-display area PA may include a first peripheral area PA1 positioned outside the display area DA and a second peripheral area PA2 including the driver 50 , the connection wiring, and the bending area.

[0120] exist Figure 2 In the embodiment of FIG. 5 , the first peripheral area PA1 is positioned at three sides of the display area DA, and the second peripheral area PA2 is positioned at the remaining side of the display area DA.

[0121] 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 non-display area PA facing the cover window WU.

[0122] However, the present invention is not necessarily limited thereto.

[0123] A portion of the non-display area PA of the display panel DP may be curved.

[0124] At this time, a portion of the non-display area PA is directed toward the rear of the display device 1000, so that the blocking area BA visible at the front side of the display device 1000 can be reduced, and Figure 2 In the embodiment, the second peripheral area PA2 may be bent and placed on the rear surface of the display area DA and then assembled.

[0125] In addition, the assembly area EA of the display panel DP may include a first assembly area EA1 and a second assembly area EA2.

[0126] The first assembly area EA1 and the second assembly area EA2 may be at least partially surrounded by the display area DA.

[0127] The first assembly area EA1 and the second assembly area EA2 are illustrated as being spaced apart from each other, but are not necessarily limited thereto and may be at least partially connected.

[0128] The first component area EA1 and the second component area EA2 may be areas in which optical elements using infrared rays, visible light, or sound are disposed (see Figure 2 The ES in the region, hereinafter referred to as the component).

[0129] The display area (DA; hereinafter also referred to as a main display area) and the assembly area EA are formed with a plurality of light emitting diodes and a plurality of pixel circuit units that generate and transmit a light emission current to each of the plurality of light emitting diodes.

[0130] Here, one light emitting diode and one pixel circuit unit are referred to as a pixel PX.

[0131] One pixel circuit unit and one light emitting diode may have a one-to-one ratio in the display area DA and the assembly area EA.

[0132] The first assembly area EA1 may include a transmission portion through which light and / or sound may be transmitted and a display portion including a plurality of pixels.

[0133] The transmission portion is positioned between adjacent pixels, and is composed of a layer through which light and / or sound can be transmitted.

[0134] The transmission portion may be positioned between adjacent pixels, and according to an embodiment, a layer that does not transmit light, such as a light blocking layer, may overlap the first component area EA1.

[0135] The number of pixels per unit area (hereinafter referred to as resolution) of pixels included in the display area DA (hereinafter referred to as normal pixels) and the number of pixels per unit area of ​​pixels included in the first component area EA1 (hereinafter referred to as first component pixels) may be the same.

[0136] The second component area EA2 includes an area composed of a transparent layer so that light can pass therethrough (hereinafter also referred to as a light-transmitting area), and the light-transmitting area does not have a conductive layer or a semiconductor layer, and includes a light-blocking material. For example, the pixel defining layer and / or the light-blocking layer may have a structure that does not block light by including an opening that overlaps a position corresponding to the second component area EA2.

[0137] The number of pixels per unit area of ​​the pixels included in the second component area EA2 (hereinafter also referred to as second component pixels) may be smaller than the number of pixels per unit area of ​​the normal pixels included in the display area DA.

[0138] As a result, the resolution of the second component pixels may be lower than that of normal pixels.

[0139] According to an embodiment, instead of a light blocking layer, a light blocking region in which at least two color filters are overlapped may be formed to block light in a specific wavelength range (eg, visible light, etc.).

[0140] Reference Figure 3 In addition to the display area DA including the display pixels PX, the display panel DP may further include a touch sensor TS.

[0141] The display panel DP includes pixels PX as components generating an image and may be visible to a user through the transmissive area TA.

[0142] In addition, the touch sensor TS may be positioned on the top of the pixel PX and may detect an external input.

[0143] The touch sensor TS may detect an external input provided to the cover window WU.

[0144] Refer again Figure 2 , the second peripheral area PA2 may include a bent portion.

[0145] The display area DA and the first peripheral area PA1 may have a flat state substantially parallel to a plane defined by the first and second directions DR1 and DR2, and the second peripheral area PA2 may extend from the flat state, pass through the bent portion, and then be in the flat state again.

[0146] As a result, at least a portion of the second peripheral area PA2 may be bent and assembled to be positioned on the rear side of the display area DA.

[0147] When at least a portion of the second peripheral area PA2 is assembled, it overlaps the display area DA in a plan view, and thus the blocking area BA of the display device 1000 may be reduced.

[0148] However, the present invention is not necessarily limited thereto.

[0149] For example, the second peripheral area PA2 may not be bent.

[0150] The driver 50 may be mounted on the second peripheral area PA2, on the bent portion, or positioned on one of both sides of the bent portion.

[0151] The driver 50 may be provided in the form of a chip.

[0152] The driver 50 is electrically connected to the display area DA and the assembly area EA, and may transmit electrical signals to pixels in the display area DA and the assembly area EA.

[0153] For example, the driver 50 may provide data signals to the pixels PX arranged in the display area DA.

[0154] 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.

[0155] The driver 50 may include various circuits other than the above-described circuits, or may be designed to provide various electrical signals to the display area DA.

[0156] The display device 1000 may have a pad portion positioned at an end of the second peripheral area PA2 and may be electrically connected to a flexible printed circuit board (FPCB) including a driving chip through the pad portion.

[0157] Here, the driving chip positioned on the flexible printed circuit board may include various driving circuits for driving the display device 1000 or a connector for power supply.

[0158] According to an embodiment, a rigid printed circuit board (PCB) may be used instead of a flexible printed circuit board.

[0159] The optical element ES may be disposed under the display panel DP.

[0160] 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.

[0161] The first optical element ES1 may use infrared rays, and in this case, a layer that does not transmit light, such as a light blocking layer, may be overlapped with the first component area EA1.

[0162] The first optical element ES1 may be an electronic element using light or sound.

[0163] 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., or a small lamp that outputs light, and it can be a speaker that outputs sound, etc.

[0164] In the case of an electronic component using light, light of various wavelength bands such as visible light, infrared light, and ultraviolet light can be used.

[0165] The second optical element ES2 is at least one of a camera, an IR camera, a dot projector, an infrared illuminator, and a time-of-flight sensor.

[0166] 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.

[0167] 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.

[0168] Figure 3 The display pixels PX and the touch sensors TS positioned in the display area DA are shown among the configuration of the display panel DP.

[0169] The power module PM may supply power required for overall operations of the display apparatus 1000 .

[0170] The power module PM may include a conventional battery module.

[0171] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for operating the display device 1000 .

[0172] The first electronic module EM1 may be directly mounted on the mother board electrically connected to the display panel DP, or may be mounted on a separate board and electrically connected to the mother board through a connector.

[0173] The first electronic module EM1 may include a control module (or referred to as a controller) CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF.

[0174] Some of the modules may not be mounted on the motherboard but may be electrically connected to the motherboard through a flexible printed circuit board connected to the motherboard.

[0175] The control module CM may control the overall operation of the display apparatus 1000 .

[0176] The control module CM may be a microprocessor.

[0177] For example, the control module CM activates or deactivates the display panel DP.

[0178] 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.

[0179] The wireless communication module TM may use Bluetooth or Wi-Fi lines to send / receive wireless signals to / from other terminals.

[0180] The wireless communication module TM may send / receive voice signals using a general communication line.

[0181] 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.

[0182] The image input module IIM may process video signals and convert them into video data that may be displayed on the display panel DP.

[0183] The audio input module AIM can receive external acoustic signals through a microphone in a recording mode, a voice recognition mode, etc., and convert them into electronic voice data.

[0184] 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) socket, and the like.

[0185] 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 are included in the optical element ES, and the second electronic module EM2 may be positioned on the back side of the display panel DP, as shown in FIG. Figure 1 and Figure 2 shown.

[0186] The optical element ES may include a light emitting module LM, a light receiving module LRM, and a camera module CMM.

[0187] In addition, the second electronic module EM2 may be directly mounted on the motherboard, it may be mounted on a separate board and electrically connected to the display panel DP through a connector, or it may be electrically connected to the first electronic module EM1.

[0188] The audio output module AOM may convert and output audio data received from the wireless communication module TM or audio data stored in the memory MM.

[0189] The light emitting module LM may generate and output light.

[0190] The light emitting module LM can output infrared rays.

[0191] For example, the light emitting module LM may include an LED device.

[0192] For example, the light receiving module LRM may detect infrared light.

[0193] When infrared rays above a certain level are detected, the light receiving module LRM may be activated.

[0194] The light receiving module LRM may include a CMOS sensor.

[0195] 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.

[0196] The camera module CMM may capture external images.

[0197] In one embodiment, the optical element ES may additionally include a light detection sensor or a heat detection sensor.

[0198] The optical element ES may detect an external object received through the front side, or provide a sound signal such as voice through the front side.

[0199] Additionally, the optical element ES may include multiple components and is not necessarily limited to any one embodiment.

[0200] Refer again Figure 2 , the housing HM can be combined with the cover window WU.

[0201] A cover window WU may be provided at the front side of the housing HM.

[0202] The housing HM may be combined with the cover window WU to provide a predetermined accommodation space.

[0203] The display panel DP and the optical element ES may be received in a predetermined receiving space provided between the housing HM and the cover window WU.

[0204] The housing HM may include a material having relatively high rigidity.

[0205] For example, the housing HM may include a plurality of frames and / or plates made of glass, plastic, or metal, or a combination thereof.

[0206] The housing HM may stably protect components of the display device 1000 accommodated in the inner space from external impact.

[0207] In the following, we will Figure 4 Let's look at the structure of a display device 1000 according to the embodiment.

[0208] Figure 4 is a perspective view schematically showing a light emitting display device according to an embodiment.

[0209] To the extent an element is not described in detail with respect to this figure, it is understood that the element is at least similar to corresponding elements that have been described elsewhere within the present disclosure. Figure 4 The embodiment shows a foldable display device in which the display device 1000 is folded by a folding axis FAX.

[0210] Reference Figure 4 In one embodiment, the display device 1000 may be a foldable display device.

[0211] The display apparatus 1000 may be folded outward or inward based on a folding axis FAX.

[0212] When folded outward based on the folding axis FAX, the display surface of the display device 1000 is located outside in the third direction DR3 so that images can be displayed in two directions.

[0213] If the display device 1000 is folded inwardly based on the folding axis FAX, the display surface may not be visible to the user.

[0214] In one embodiment, the display device 1000 may include a display area DA, an assembly area EA, and a non-display area PA.

[0215] The display area DA may be divided into a 1-1 display area DA1-1, a 1-2 display area DA1-2, and a folding area FA.

[0216] The 1-1 display area DA1-1 and the 1-2 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 1-1 display area DA1-1 and the 1-2 display area DA1-2.

[0217] At this time, when folded outward based on the folding axis FAX, the 1-1 display area DA1-1 and the 1-2 display area DA1-2 are positioned on both sides in the third direction DR3, which allows images to be displayed in both directions.

[0218] In addition, when FAX is folded inwardly based on the folding axis FAX, the 1-1 display area DA1-1 and the 1-2 display area DA1-2 may not be visible to the user.

[0219] Figure 5 is an enlarged plan view of a partial region of a light emitting display device according to an embodiment.

[0220] Figure 5 A portion of the light emitting display panel DP of the light emitting display device according to the embodiment is shown, and use of the display panel for a mobile phone is shown.

[0221] The display area DA is positioned at the front side of the light-emitting display panel DP, and the assembly area EA is also positioned within the display area DA.

[0222] For example, the assembly area EA may include a first assembly area EA1 and a second assembly area EA2.

[0223] In addition, Figure 5 In the embodiment of FIG. 5 , the first assembly area EA1 is positioned adjacent to the second assembly area EA2 .

[0224] 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.

[0225] The location and number of the first assembly areas EA1 may vary according to the embodiment. 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.

[0226] The display area DA is formed with a plurality of light emitting diodes and a plurality of pixel circuit units that generate and transmit a light emitting current to each of the plurality of light emitting diodes.

[0227] Here, one light emitting diode and one pixel circuit unit are referred to as a pixel PX.

[0228] In the display area DA, one pixel circuit unit and one light emitting diode have a one-to-one arrangement.

[0229] The display area DA is also referred to as a “normal display area” hereinafter.

[0230] although 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 positioned below the cutting line.

[0231] The light emitting display panel DP according to the embodiment may be roughly divided into a lower panel layer and an upper panel layer.

[0232] The lower panel layer is the part where the light emitting diodes and pixel circuit units constituting the pixels are located, and may even include a packaging layer covering it (see Figure 6 of 400).

[0233] For example, the lower panel layer is formed from a substrate (see Figure 6 110) to the anode of the encapsulation layer, the pixel definition 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 the cathode, the insulating film between the substrate and the anode, the semiconductor layer and the conductive layer.

[0234] The upper panel layer is a portion positioned above the encapsulation layer and includes a sensing insulating layer capable of detecting a touch (see Figure 6501, 510 and 511) and a plurality of sensing electrodes (see Figure 6 540 and 541 in the figure), and may include a light blocking layer (see Figure 6 220), color filter (see Figure 6 230) and planarization layer (see Figure 6 550 in the table).

[0235] The first component area EA1 may include only a transparent layer that allows light to pass through, may not have a conductive layer or a semiconductor layer that allows light to pass through, and may have an optical sensor area in the lower panel layer. An opening (hereinafter, referred to as an additional opening) is formed in a position corresponding to the first component area EA1 in the pixel defining layer, the light blocking layer of the upper panel layer, and the color filter layer, so that it can have a structure that does not block light.

[0236] Even if the optical sensor area is positioned in the lower panel layer, it may be the display area DA in addition to the first assembly area EA1 if there is no corresponding opening in the upper panel layer.

[0237] One first component area EA1 may include a plurality of adjacent optical sensor areas, and in this case, pixels adjacent to the optical sensor areas may be included in the first component area EA1.

[0238] When the first optical element ES1 corresponding to the first component area EA1 uses infrared rays instead of visible light, the first component area EA1 overlaps the light blocking layer 220 that blocks the visible light.

[0239] The second component area EA2 may include second component pixels and a light-transmitting region, and a space between adjacent second component pixels may be a light-transmitting region.

[0240] The peripheral area may also be located outside the display area DA.

[0241] In addition, although Figure 5 A display panel for a mobile phone is shown, but the present embodiment can be applied to any display panel in which an optical element can be positioned on the back side of the display panel, and it can also be a flexible display device.

[0242] 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.

[0243] 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.

[0244] Figure 6is a schematic cross-sectional view of a display panel according to an embodiment.

[0245] The light emitting display panel DP according to one embodiment may display an image by forming a light emitting diode on the substrate 110, may detect a touch by including a plurality of sensing electrodes 540 and 541, and has a light blocking layer 220. Light emitted from the light emitting diode and the light blocking layer 220 and the color filters 230R, 230G, 230B also has the color characteristics of the color filters 230R, 230G, 230B.

[0246] In addition, according to one embodiment, the polarizer is not disposed on the front side of the light-emitting display panel DP, but the pixel defining layer 380 is formed of a black organic material, and the light blocking layer 220 and the color filter 230 are disposed on the top, so that even if external light is incident on the inside, the external light is reflected from the anode, etc. and is not transmitted to the user.

[0247] Details of the light emitting display panel DP according to the embodiment are as follows.

[0248] The substrate 110 may include a material having a rigid property and not being bendable, such as glass, or may include a flexible material that can be bent, such as plastic or polyimide.

[0249] A plurality of thin film transistors are disposed on the substrate 110, but Figure 6 They are omitted in FIG. 1 , and only the organic layer 180 covering the thin film transistor is shown.

[0250] One pixel is formed of a light emitting diode and a pixel circuit unit in which a plurality of transistors and capacitors are formed to transfer a light emitting current to the light emitting diode.

[0251] exist Figure 6 In the figure, the pixel circuit unit is not shown, and the structure of the pixel circuit unit may vary according to the embodiment.

[0252] exist Figure 6 In FIG. 1 , the organic layer 180 covering the pixel circuit unit is first shown.

[0253] A light emitting diode including an anode, a light emitting layer EML, and a cathode is positioned on the organic layer 180 .

[0254] The anode may include a single layer including a transparent conductive oxide film and a metal material or a multilayer including these.

[0255] The transparent conductive oxide film may include indium tin oxide (ITO), poly-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).

[0256] The light emitting layer EML may be formed of an organic light emitting material, and adjacent light emitting layers EML may display different colors.

[0257] According to an embodiment, each light emitting layer EML may display the same color light due to the color filters 230R, 230G, 230B positioned at the top.

[0258] 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 are stacked.

[0259] The pixel defining layer 380 is positioned on the organic layer 180 and the anode. The pixel defining layer 380 has an opening (OP; hereinafter referred to as a first opening), and the opening exposes a portion of the upper surface of the anode, and the light emitting layer EML overlaps a portion of the anode and is positioned on the anode exposed by the opening OP.

[0260] The light emitting layer EML may be positioned only within the opening OP of the pixel defining layer 380 , and be separated from the adjacent light emitting layer EML by the pixel defining layer 380 .

[0261] The pixel defining layer 380 may be formed of a negative type black organic material.

[0262] 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 oxide), metal nitride particles, and the like.

[0263] The pixel defining layer 380 includes a light blocking material and is black, and may have a property of absorbing / blocking light rather than reflecting light.

[0264] Since a negative type organic material is used, it can have a property of removing a portion covered by the mask.

[0265] The spacer 385 is disposed on the pixel defining layer 380 .

[0266] The spacer 385 includes a first portion 385 - 1 positioned in a high and narrow area and a second portion 385 - 2 positioned in a low and wide area.

[0267] exist Figure 6 , the first portion 385 - 1 and the second portion 385 - 2 are shown as separated by a dashed line within the spacer 385 .

[0268] Here, the first portion 385 - 1 may ensure rigidity against pressing pressure by enhancing scratching strength.

[0269] The second portion 385 - 2 may allow contact between the pixel defining layer 380 and the functional layer FL.

[0270] The first portion 385 - 1 and the second portion 385 - 2 are made of the same material, and may be made of a positive type photosensitive organic material (eg, photosensitive polyimide (PSPI)).

[0271] Because it has positive properties, it can remove the parts not covered by the mask.

[0272] The spacer 385 is transparent so that light can be transmitted and / or reflected.

[0273] The pixel defining layer 380 may be formed as a negative type, and the spacer 385 may be formed as a positive type, and according to an embodiment, they may include the same material.

[0274] At least a portion of the upper surface of the pixel defining layer 380 is covered by the spacer 385, 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.

[0275] 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 enhancing the adhesion property between the pixel defining layer 380 and the functional layer FL.

[0276] In the present embodiment, the spacer 385 is positioned only in a region overlapping with the light blocking layer 220 to be described later, and thus when viewed from the front side of the display panel DP, the spacer 385 may not be visible since the spacer 385 is hidden by the light blocking layer 220 .

[0277] The functional layer FL is positioned on the spacer 385 and the exposed pixel defining layer 380 and is disposed on the entire surface of the light emitting display panel DP or may be formed in a partial region, for example, in all regions except the light transmitting region of the second assembly area EA2.

[0278] 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 positioned above and below the light emitting layer EML.

[0279] For example, a hole injection layer, a hole transport layer, a light-emitting layer EML, an electron transport layer, an electron injection layer and a cathode are sequentially positioned on the anode, and the hole injection layer and the hole transport layer can be positioned below the light-emitting layer EML, and the electron transport layer and the electron injection layer can be positioned on top of the light-emitting layer EML.

[0280] The spacer 385 may reduce a defect rate due to pressing pressure by increasing the scratch resistance of the light-emitting display panel DP, and according to the present embodiment, it may increase adhesion with the functional layer FL positioned at the top of the spacer 385 to prevent entry of ambient moisture and air.

[0281] In addition, when the light-emitting display panel DP has a flexible property and is folded and unfolded, the high adhesive strength may eliminate the problem of poor adhesiveness between layers.

[0282] The cathode may be formed as a light-transmitting electrode or a reflective electrode.

[0283] According to an embodiment, the cathode can be a transparent or translucent electrode, and can be lithium (Li), calcium (Ca), lithium fluoride / calcium (LiF / Ca), lithium fluoride / aluminum (LiF / Al), aluminum (Al), silver (Ag), magnesium (Mg), and their compounds or mixtures can be formed into a metal film with a small work function.

[0284] In addition, a transparent conductive oxide (TCO) film such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium oxide (In 2 O 3 ).

[0285] The cathode electrode may be integrally formed over the entire surface of the light-emitting display panel DP.

[0286] The encapsulation layer 400 is positioned on the cathode.

[0287] The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and Figure 6 In the embodiment, 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 .

[0288] The encapsulation layer 400 may protect the light emitting layer EML made of an organic material from ambient moisture or oxygen that may enter.

[0289] According to an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[0290] Sensing insulation layers 501 , 510 , 511 and a plurality of sensing electrodes 540 , 541 are located on the encapsulation layer 400 for touch detection.

[0291] exist Figure 6 In the embodiment of FIG. 5 , two sensing electrodes 540 and 541 are used to detect a touch in a capacitive type, but according to an embodiment, a touch may also be detected by using only one sensing electrode in a self-capacitance method.

[0292] The plurality of sensing electrodes 540 and 541 may be insulated with the second sensing insulating layer 510 interposed therebetween, and the lower sensing electrode 541 is positioned on the first sensing insulating layer 501, and the second sensing insulating layer 510 is interposed between the plurality of sensing electrodes 540 and 541, the upper sensing electrode 540 is positioned on the second sensing insulating layer 510, and the upper sensing electrode 540 is covered by the third sensing insulating layer 511.

[0293] The plurality of sensing electrodes 540 and 541 may be electrically connected through the openings positioned in the second sensing insulating layer 510 .

[0294] 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 may include a single layer or a multilayer.

[0295] The light blocking layer 220 and the color filters 230R, 230G, 230B are located on the third sensing insulating layer 511 .

[0296] The light blocking layer 220 may overlap the sensing electrodes 540 and 541 in a plane, and may be positioned not to overlap the anode electrode in a plane.

[0297] This is to ensure that the anode electrode and the light emitting layer EML capable of displaying an image are not blocked by the light blocking layer 220 and the sensing electrodes 540 and 541 .

[0298] Reference Figure 6 , in a plan view, the light blocking layer 220 is positioned only in a region overlapping the pixel defining layer 380 , and one side of the light blocking layer 220 is arranged inward from a corresponding side of the pixel defining layer 380 .

[0299] The light blocking layer 220 also has a second opening (OPBM; hereinafter referred to as the second opening), and the area of ​​the second opening OPBM of the light blocking layer 220 is greater than the area of ​​the opening OP of the pixel defining layer 380. The opening OP of the pixel defining layer 380 may be positioned in a plan view, and the opening OP of the pixel defining layer 380 may also be positioned within the second opening OPBM of the light blocking layer 220.

[0300] In addition, one side of the spacer 385 is disposed inwardly from a corresponding side of the pixel defining layer 380 by a predetermined distance g1 , and the spacer 385 is also disposed inwardly with respect to a corresponding side of the light blocking layer 220 .

[0301] As a result, when viewed from the front side of the display panel DP, the spacer 385 may be blocked by the light blocking layer 220 and may not be visible.

[0302] When external light is incident, the external light may pass through the second opening OPBM of the light blocking layer 220 and then be reflected on the sidewall of the opening OP of the pixel defining layer 380 .

[0303] The sidewall of the 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 present various colors such as rainbow.

[0304] Since such color-separated reflected light may be easily seen by the user and deteriorate the display quality, in an embodiment, the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 both have the following shape: Figure 7 In the embodiments, the shape of the ellipse, the orientation of the ellipse, or the eccentricity of the ellipse is arranged in various ways to reduce color separation or allow white reflected light to be recognized.

[0305] This will be shown below Figure 7 Discussed in more detail in .

[0306] The color filters 230R, 230G, 230B are positioned on the sensing insulating layers 501 , 510 , 511 and the light blocking layer 220 .

[0307] The color filters 230R, 230G, and 230B are a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light.

[0308] In a plan view, each color filter 230R, 230G, 230B may overlap with an anode electrode of a light emitting diode, and the color filter 230R, 230G, 230B of one color may be filled in the second opening OPBM of the light blocking layer 220 .

[0309] Some of the color filters 230R, 230G, 230B may also be positioned on the upper surface of the light blocking layer 220 .

[0310] 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.

[0311] However, the light emitting layer EML emits light of different colors, and the displayed color can be enhanced by passing through a color filter of the same color.

[0312] The light blocking layer 220 may be located between the respective color filters 230R, 230G, 230B.

[0313] According to an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0314] The color conversion layer may include quantum dots.

[0315] A planarization layer 550 covering the color filters 230R, 230G, 230B is located on the color filters 230R, 230G, 230B.

[0316] The planarization layer 550 is used to planarize the upper surface of the light-emitting display panel DP, and may be a transparent organic insulating film including polyimide, polyamide, acrylic resin, benzocyclobutene, and / or phenolic resin.

[0317] According to an embodiment, a low refractive index layer and an additional planarization layer may be further located on the planarization layer 550 to increase the front visibility and light output efficiency of the display panel.

[0318] Light may be refracted by the low refractive index layer and the additional planarization layer having a high refractive index property and emitted toward the front side.

[0319] In this case, according to an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be positioned directly on the color filter 230 .

[0320] In this embodiment, a polarizer is not included on top of the planarization layer 550 .

[0321] The polarizer may prevent display quality from being deteriorated when external light visible to a user is incident and reflected by the anode or the sidewall of the opening OP of the pixel defining layer 380 .

[0322] However, the polarizer has a disadvantage of consuming more power to display a certain brightness not only by reducing reflection of external light but also by reducing light emitted from the light emitting layer EML.

[0323] In order to reduce power consumption, the light-emitting display device of this embodiment may not include a polarizer.

[0324] In addition, in the present embodiment, the side of the anode is covered with a pixel defining layer 380 to reduce the degree of reflection from the anode, and since the light blocking layer 220 already includes a structure to prevent degradation of the display quality, the light blocking layer 220 is also formed to reduce the degree of incident light, thereby reducing the amount of light incident on the anode.

[0325] Therefore, there is no need to separately form a polarizer on the front side of the light-emitting display panel DP.

[0326] In the following, we will Figures 7 to 9 The second opening OPBM of the light blocking layer 220 and the opening (also referred to as the first opening) OP of the pixel defining layer 380 are described via a structure of the light emitting display panel DP formed in the display area DA, and an embodiment in which each opening has an elliptical shape will be examined.

[0327] Figures 7 to 9 is a plan view of a portion of a display panel according to an embodiment.

[0328] Figures 7 to 9 Each shows a different embodiment, and Figure 7 1 and 2 show embodiments in which the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 are arranged at various angles, for example, Figure 8 1 and 2 show embodiments in which the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 are formed at various eccentricities, and Fig. 9 Embodiments in which the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 have various angles and are formed at various eccentricities are illustrated.

[0329] exist Figures 7 to 9 In the figure, based on the light-emitting layers displaying the three primary colors of red, green and blue, the opening OP of the pixel defining layer 380 corresponding to each light-emitting layer and the second opening OPBM of the light blocking layer 220 are shown as being divided into openings OPr, OPg, OPb and second openings OPBMr, OPBMg, OPBMb.

[0330] Here, r, g, and b may correspond to red, green, and blue, respectively.

[0331] In addition, Figures 7 to 9 In an embodiment of the present invention, the unit pixel includes two light emitting regions of one color and includes a total of four light emitting regions.

[0332] For example, a unit pixel includes four adjacent light-emitting areas, and the four light-emitting areas include two light-emitting areas of the first color among the three-color light-emitting areas, and the remaining light-emitting areas of the second color and the light-emitting areas of the third color, and each light-emitting area can be included in a unit pixel at a time.

[0333] exist Figures 7 to 9 In the embodiment, among the four light-emitting areas, two green light-emitting areas are included, and one red light-emitting area and one blue light-emitting area are included.

[0334] Hereinafter, the present embodiment is also referred to as a green division unit pixel.

[0335] In addition, refer to Figure 7 As shown in the dotted lines in FIG. 1 , four adjacent green light-emitting areas have a diamond shape, and four adjacent red light-emitting areas and four adjacent blue light-emitting areas each have a rectangular shape.

[0336] Despite Figure 8 and Fig. 9In the embodiment of FIG. 1 , the dashed lines are not shown, but they are in the same Figure 7 The same position as the position in .

[0337] First, through Figure 7 The planar structures of the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are examined in detail.

[0338] exist Figure 7 , the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 all have an elliptical plane shape having the same eccentricity.

[0339] For example, the red openings OPr, the green openings OPg, and the blue openings OPb of the pixel defining layer 380 may all be ellipses having the same eccentricity.

[0340] In addition, the red second openings OPBMr, the green second openings OPBMg, and the blue second openings OPBMb of the light blocking layer 220 may all be ellipses having the same eccentricity.

[0341] Here, the eccentricities of the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may have a value of 0.2 or more and 0.85 or less.

[0342] Here, the ellipse has two foci, may have a shape connecting points at which the sum of distances from the two foci is constant, and may have a major axis and a minor axis.

[0343] The eccentricity of an ellipse is the distance between the two foci divided by the length of the major axis.

[0344] 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.

[0345] The openings OPr, OPg, OPb of one pixel defining layer 380 correspond to the second openings OPBMr, OPBMg, OPBMb of one light blocking layer 220 , respectively.

[0346] For example, the openings OPr, OPg, OPb of the pixel defining layer 380 corresponding to the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are positioned in the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 .

[0347] The corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other in a plan view and have a constant horizontal distance from each other, and the second openings OPBMr, OPBMg, OPBMb of the two corresponding light blocking layers 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may have an elliptical shape having a major axis at the same angle.

[0348] Here, the horizontal gap between the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 can be greater than 0 μm and less than or equal to 20 μm, and the horizontal gap can change according to the thickness of the layer (for example, the encapsulation layer) positioned between the two in the cross section, and the encapsulation layer can have a thickness of about 6 μm.

[0349] According to an embodiment, the long-axis directions of the second openings OPBMr, OPBMg, OPBMb of the corresponding light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may be different due to process errors, etc., may form an angle, and may have an angle of 0 degrees or greater and 20 degrees or less.

[0350] exist Figure 7 In the embodiment, the pixel defining layer 380 may have four or more angles formed by the long axis of each of the plurality of openings OPr, OPg, OPb, and further, the angles formed by the long axes may be arranged at intervals of 45 degrees or less.

[0351] As an example, looking at the specific angle relationships focusing on an embodiment having five angles, the relationship is as follows.

[0352] The embodiment having five angles is formed at intervals of 36 degrees along the major axis, so if one major axis has 0 degree based on the first direction DR1, it has angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees, a total of five angles.

[0353] The interval between the major axis angles can be checked by dividing the angle of 180 degrees by 5, which is the number of directions. This is because two angles of 360 degrees with an angle of 180 degrees have substantially the same major axis direction of the ellipse. This can be calculated by dividing the number by 180 degrees.

[0354] The plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may each have four or more angles, and further, angles formed by the major axes may be arranged at intervals of 45 degrees or less.

[0355] As described above, the angles formed by the long axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged at intervals of 45 degrees or less, and they may be placed at equal intervals.

[0356] However, according to an embodiment, the angle formed by the major axis of each opening may be arranged at intervals of one of 45 degrees or less, and may be arranged at irregular intervals.

[0357] Embodiments in which the major axes of the openings are arranged at irregular intervals may be intentionally arranged to reduce the diffraction pattern, or may be arranged at irregular intervals due to process errors.

[0358] In order to make the unit pixel including the red opening, the green opening, and the blue opening have a square structure, it is appropriate to divide the angle of the long axis into squares equal to an integer (for example, 2 2 , 3 2 , 4 2 , 5 2 etc.) to form the unit pixel.

[0359] Here, the unit pixel may include one each of a red opening, a green opening, and a blue opening, and a plurality of openings of one color (eg, a green opening) may be formed.

[0360] The plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have four or more angles or are spaced apart at an angle of 45 degrees or less, and when arranged, less color separation of external light occurs, or a constant diffraction pattern or color separation occurs regardless of the angle, which will be Fig.13 and Fig.14 Check in more detail.

[0361] The following will describe Figure 8 Embodiment of the invention.

[0362] Figure 8 An embodiment is shown in which the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have elliptical shapes having two or more different eccentricities.

[0363] According to an embodiment, each opening of the same color may have an elliptical shape having 2 or more eccentricities.

[0364] Here, refer to Fig.16 , the eccentricity of the elliptical shape can be in the range of 0.2 to 0.85.

[0365] exist Figure 8 In the embodiment, the major axis direction of the ellipse has only two directions that form 45 degrees with respect to the first direction DR1 or the second direction DR2, and according to the embodiment, Figure 7 Differently, it may have four or fewer directions.

[0366] pass Figure 8 , the planar structures of the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 will be examined in detail.

[0367] exist Figure 8 , the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have an elliptical plane shape and are oriented in the first direction DR1, or the major axis directions of the ellipses are arranged only in two directions forming 45 degrees relative to the second direction DR2.

[0368] The red openings OPr, the green openings OPg, and the blue openings OPb of the pixel defining layer 380 may be formed as ellipses having at least two different eccentricities.

[0369] In addition, the red second openings OPBMr, the green second openings OPBMg, and the blue second openings OPBMb of the light blocking layer 220 may be formed as ellipses having at least two different eccentricities.

[0370] In addition, Figure 8 In the embodiment, the openings OPr, OPg, OPb of the same color of the pixel defining layer 380 can have an elliptical plane shape with at least two different eccentricities, and the second openings OPBMr, OPBMg, OPBMb of the same color of the light blocking layer 220 can also have an elliptical plane shape with at least two different eccentricities.

[0371] The openings OPr, OPg, OPb of one pixel defining layer 380 correspond to the second openings OPBMr, OPBMg, OPBMb of one light blocking layer 220 , respectively.

[0372] For example, the openings OPr, OPg, OPb of the pixel defining layer 380 corresponding to the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are positioned in the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 .

[0373] The corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other in a plan view and have a constant horizontal distance from each other, and the major axis directions of the elliptical shapes may be formed at the same angle.

[0374] Here, the horizontal gap between the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 can be greater than 0 μm and less than or equal to 20 μm, and the horizontal gap can change according to the thickness of the layer (e.g., the encapsulation layer) positioned between the two in the cross section.

[0375] According to an embodiment, the long axis directions of the second openings OPBMr, OPBMg, OPBMb of the corresponding light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may be different due to process errors, etc., and may form an angle of 0 degrees or greater and 20 degrees or less.

[0376] Despite Figure 8 The openings have the same color in the embodiment, but two or more elliptical shapes with different eccentricities may be placed in various positions at various ratios.

[0377] According to an embodiment, the same number of elliptical shapes having different eccentricities may be included in the display area DA, and according to an embodiment, they may be included in different numbers.

[0378] As an example, when the red openings OPr of the pixel defining layer 380 have two elliptical shapes having different eccentricities, the corresponding red second openings OPBMr of the light blocking layer 220 may also have different eccentricities.

[0379] However, according to an embodiment, the red second openings OPBMr of the light blocking layer 220 may be formed to have the same eccentricity.

[0380] Reference Figure 8 , an angle formed by each long axis of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 is a first angle, and forms an angle of 45 degrees relative to the first direction DR1 and the second direction DR2.

[0381] 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.

[0382] For example, in Figure 8In an embodiment of the present invention, various elliptical shapes with different eccentricities are formed to reduce color separation of external light, or to produce a constant diffraction pattern or color separation regardless of the angle.

[0383] therefore, Figure 8 The embodiments can be used with Figure 7 Embodiments of the invention provide different ways of achieving constant color separation and / or constant diffraction, in Figure 7 In the embodiment of the present invention, the direction of the major axis of the ellipse is varied.

[0384] exist Figure 8 In the embodiment, the number of major axis directions of the ellipse is small, so it is possible to generate Fig.11 The reflective diffraction pattern shown in element (C) can therefore be reduced in directionality by forming one of the multiple openings OPr, OPg, OPb of the pixel defining layer 380 or one of the multiple second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 into a circular shape or by increasing the number of major axis directions of the elliptical shape.

[0385] The following will view Fig. 9 Embodiment of the invention. Fig. 9 The embodiment combines Figure 7 Examples and Figure 8 Embodiment of the invention.

[0386] exist Fig. 9 In the embodiment, even for the same color, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have elliptical shapes with different eccentricities, and the angles formed by the long axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 all have four or more angles, or the angles formed by the long axes are arranged at intervals of 45 degrees or less.

[0387] Here, refer to Fig.16 , the eccentricity of the elliptical shape can be in the range of 0.2 to 0.85.

[0388] Fig. 9 Examples include Figure 7 Examples and Figure 8 All the features of the embodiments are such that the multiple openings OPr, OPg, OPb of the pixel defining layer 380 or the multiple second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have four or more angles, or are arranged at intervals less than 45 degrees, and in addition, the eccentricities of the ellipses are formed differently to reduce color separation of external light, or to produce a constant diffraction pattern or color separation regardless of the angle.

[0389] According to an embodiment, long axis directions of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are formed at equal intervals or irregular intervals.

[0390] Figures 7 to 9 A rough comparison of the embodiments is shown in Table 1 below.

[0391]

Table 1

[0392]

[0393]

[0394] In order to check the characteristics of the above embodiment, check Fig.10 A comparative example of Fig.11 The diffraction characteristics and dispersion characteristics of the reflected light between the comparative example and the example were compared and examined.

[0395] Fig.10 is a plan view of a portion of a display panel according to a comparative example, Fig.11 is a comparison example and Figures 7 to 9 Photograph of the reflective properties of an example.

[0396] exist Fig.10 In the comparison example, Figures 7 to 9 Unlike the embodiment of the present invention, both the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape.

[0397] Fig.11 Shows Figures 7 to 9 Examples and Fig.10 The diffraction pattern and dispersion of the reflected light of the comparative example, and Fig.11 The element (A) is Fig.10 A comparative example of Fig.11 The element (B) is Figure 7 An embodiment of Fig.11 The element (C) is Figure 8 An embodiment of Fig.11 The element (D) is Fig. 9 Embodiment of the invention.

[0398] First, check Fig.11 In the comparative example of element (A), the diffraction pattern has a ring shape and is independent of the angle, but a plurality of rings are formed, each ring showing a different color, thereby confirming that the reflected light is color separated.

[0399] On the contrary, refer to Fig.11 The elements (B) and Fig.11 , 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 appears white as a whole, so no specific color separation occurs.

[0400] exist Fig.11 In the element (C), the diffraction pattern has a linear pattern at an angle of 45 degrees, thereby forming a diffraction pattern according to the angle. This is caused by arranging the major axis angle of the ellipse only at 45 degrees, so the diffraction characteristics according to the angle can be reduced by forming some of the openings into a circle or increasing the major axis direction of the ellipse.

[0401] Next, we will Figure 12 to Figure 14 Check the characteristics according to the major axis angle.

[0402] First, through Fig.12 Examine the relationship between the angle of the major axis of the ellipse and the direction of the diffraction pattern of the reflected light.

[0403] Fig.12 is a diagram showing the reflection characteristics of a light-emitting display device according to angles.

[0404] Fig.12 The left side of elements (A), (B), and (C) shows a structure in which the openings of the pixel defining layer 380 and the openings of the light blocking layer 220 are arranged in the same direction, and the right side shows a diffraction pattern of the reflected light.

[0405] Reference Fig.12 , when the opening of the pixel defining layer 380 and the opening of the light blocking layer 220 have an elliptical shape, the diffraction pattern of the reflected light also has an elliptical shape, but it can be seen that the major axis directions are different.

[0406] For example, the major axis directions of the openings of the pixel defining layer 380 and the light blocking layer 220 and the major axis direction of the elliptical pattern of the diffraction pattern of the reflected light may be perpendicular to each other.

[0407] when Fig.12 When the diffraction patterns of the elements (A), (B) and (C) on the right are combined, they become as follows Fig.12 The circular diffraction pattern shown in element (D) indicates that it is possible to have a diffraction pattern that is independent of angle.

[0408] In the following, through Fig.13 and Fig.14 , it will be examined to what extent elliptical structures arranged at various angles are required to form an angle-independent diffraction pattern.

[0409] Fig.13are diagrams showing various angle arrangements according to an embodiment, and Fig.14 It is a photo of the reflective properties according to the angle.

[0410] first, Fig.13 The major axis directions of a group of ellipses that can be formed in one display area DA are shown.

[0411] exist Fig.13 In the element (A), the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 has two long axis directions, which are spaced apart at an angle of 90 degrees, and an example of arrangement in multiple directions is shown.

[0412] exist Fig.13 In the element (B), the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 has four long axis directions, which are spaced apart at an angle of 45 degrees, and an example of arrangement in multiple directions is shown.

[0413] exist Fig.13 In the element (C), the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 has nine major axis directions, and the nine major axes are spaced 20 degrees apart, and an example of arrangement in multiple directions is shown.

[0414] Apart from Fig.13 In addition to the long axis direction shown in , it can be formed in various long axis directions (arranged at various angles). If the number of long axis directions is small, then Fig.11 As shown in the element (C), a difference in the diffraction pattern occurs according to the angle, and it can include a certain number or more of major axis angles.

[0415] To confirm this, Fig.14 Diffraction patterns according to the number of various major axis directions are shown.

[0416] Fig.14 The element (A) is Fig.13 The diffraction pattern of the example with 4 major axis angles shown in element (B), Fig.14 Element (B) is a diffraction pattern of an example having 5 major axis angles, and Fig.14 Element (C) is an example diffraction pattern with 6 major axis angles. Fig.14 The element (D) is a diffraction pattern of an example having 7 major axis angles, and Fig.14 Element (E) is an example diffraction pattern with 8 major axis angles.

[0417] In order to have Fig.14 A diffraction pattern that is independent of direction, preferably a diffraction pattern that has a nearly circular shape, and Fig.14 In element (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.

[0418] However, with Fig.11 Compared with the comparative example of element (A), the diffraction pattern is unclear and is not clearly visible compared with the comparative example.

[0419] Fig.14 Elements (B) to Fig.14 The element (E) has a circular diffraction pattern and has diffraction characteristics and color separation that are independent of direction.

[0420] Therefore, based on Fig.14 If the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 is formed to have four or more major axis angles, constant diffraction or color separation occurs regardless of the angle, and display quality may be improved.

[0421] Referring to the above, it may have 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.

[0422] In the above, the angles between the major axis angles of the ellipse and the number of angles were examined.

[0423] Below, based on Fig.15 and Fig.16 , changes in reflection characteristics according to changes in the eccentricity of the ellipse will be examined.

[0424] Fig.15 and Fig.16 is a diagram showing reflection characteristics according to eccentricity.

[0425] Fig.15 The figure shows the brightness distribution and dispersion of the diffraction pattern of the reflected light extracted for the two color coordinate axes according to the value of the eccentricity. Based on this, Fig.16 The distribution value of brightness and the distance value on the color coordinates are shown in a curve graph based on the eccentricity.

[0426] exist Fig.15 and Fig.16 The smaller the distance value in the brightness distribution and color coordinates, the weaker the identified diffraction.

[0427] exist Fig.16 In FIG. 1 , the position where the brightness distribution value or the distance value on the color coordinate is the smallest is indicated by an arrow.

[0428] 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 coordinate distribution is taken into consideration.

[0429] In addition, refer to Fig.16 It is determined that in the area divided by the dotted line (for example, in the range of 0.2 to 0.85), brightness scattering and color coordinate scattering do not significantly reduce the display quality, so an ellipse with such an eccentricity range can be applied to this embodiment.

[0430] Hereinabove, an example in which the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 has one eccentricity is examined.

[0431] According to an embodiment, at least two elliptical shapes having different eccentricities may be combined to form an opening OP of the pixel defining layer 380 or a second opening OPBM of the light blocking layer 220. Figures 17 to 19 Check in detail.

[0432] First, through Fig.17 and Fig.18 Check the basic elliptical shape and the arrangement of the openings based thereon.

[0433] Fig.17 and Fig.18 : is a figure which shows the structure which combined the ellipses which have different eccentricities.

[0434] exist Fig.17 , an example of merging two or more elliptical shapes with different eccentricities is shown in detail.

[0435] Fig.17 The elements (A) and Fig.17 The elements (B) depict ellipses with different eccentricities, and Fig.17 The elements (C) and Fig.17 The elements (D) depict ellipses that are combined in different ways, each with a different eccentricity.

[0436] exist Fig.17 In element (A), an ellipse with an eccentricity of 0.8 is shown, and Fig.17 In element (B), an elliptical shape with an eccentricity of 0.6 is shown.

[0437] The ellipse that merges these two ellipses can have a shape similar to Fig.17 Elements (C) or Fig.17 The shape of the element (D).

[0438] exist Fig.17 The elements (C) and Fig.17In element (D), a dotted line is shown within the merged elliptical shape, and the ellipses on both sides of the dotted line are parts of ellipses having different eccentricities.

[0439] For example, Fig.17 The element (C) is Fig.17 The elements (A) and Fig.17 An example of an ellipse in which the element (B) is cut along the second direction DR2 and then combined, and Fig.17 The element (D) is cut along the first direction DR1 Fig.17 The elements (A) and Fig.17 An example of the ellipses in the features (B) and then combining them.

[0440] The method of combining two ellipses having different eccentricities is not necessarily limited thereto and may be combined in various ways.

[0441] exist Fig.18 The second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 are depicted in FIG. Fig.17 Examples of elliptical shapes combined in the same manner as in the element (C) and arranged in various major axis directions.

[0442] 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, OPBMr, one blue opening OPb, OPBMb, and two green openings OPg, OPBMg.

[0443] exist Fig.18 In the embodiment, the long axis directions of the respective openings OPr, OPg, OPb of the pixel defining layer 380 may be different from each other, and the long axis directions of the respective second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may also be different from each other.

[0444] like Fig.14 As shown in , use Fig.18 The embodiment of the ellipse as a combination of two ellipses with different eccentricities shown in the figure also uses the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, and the angles formed by the respective major axes of the openings can have four or more angles, and the angles formed by the major axes can be arranged at intervals of 45 degrees or less.

[0445] Additionally, the eccentricity of the two ellipses used for merging may vary, and thus the size of the merged ellipse may also vary.

[0446] In addition, according to the embodiment, two ellipses having different eccentricities for respective colors may be combined, and even if they are the same color, two ellipses having different eccentricities may be combined to form various ellipses.

[0447] Here, the eccentricity of the openings OPr, OPg, OPb of the pixel defining layer 380 and / or the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may have an eccentricity of 0.2 to 0.85, as shown in FIG. Fig.15 and Fig.16 as shown in .

[0448] The long axis directions of the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be the same or form an angle of 20 degrees or less due to process errors or the like.

[0449] The openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have a certain interval in a plane, or are spaced apart from each other by more than 0 μm and less than 20 μm, which may have the following horizontal intervals.

[0450] Next, for the use of Fig.17 Example of ellipse shapes merged in the same way as in the element (C) Fig.19 's element (A)), discuss the diffraction characteristics of reflected light.

[0451] Fig.19 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0452] Fig.19 Element (A) shows an embodiment in which the openings of each color have the same merged elliptical shape but the major axis direction has five or more angles.

[0453] exist Fig.19 In the element (B), it is shown Fig.19 Diffraction characteristics of reflected light in element (A).

[0454] and Fig.11 Compared with the comparative example of element (A), it can be seen that Fig.19 The diffraction characteristics of element (B) have a blurred reflection diffraction pattern, the ring shape is not very clear, and it is difficult for the user to easily identify the separated colors.

[0455] As a result, compared with the comparative example, Fig.19 The example shown in element (A) may also have improved display quality.

[0456] exist Figures 17 to 19 In the embodiments, the illustration and description focus on an embodiment that combines two different elliptical shapes.

[0457] However, according to an embodiment, it is also possible to merge two or more elliptical shapes having different eccentricities.

[0458] As described above, embodiments combining two or more elliptical shapes also have similar Fig.19 The element (B) has a reflective diffraction pattern with blurred diffraction characteristics, the ring shape is less clear, and it is difficult for the user to easily identify the separated colors, so it can have improved display quality compared to the comparative example.

[0459] In addition, the elliptical shapes of the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are spaced apart at a constant distance in a plan view, or the interval in the plan view may vary depending on the position.

[0460] For example, according to an embodiment, the number or eccentricity of elliptical shapes merged with the elliptical shapes of the openings OPr, OPg, OPb of the pixel defining layer 380 may be determined by the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, and the number or eccentricity of the merged elliptical shapes may be different.

[0461] As described above, even when the elliptical shapes of the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are different, they may have similar Fig.19 The diffraction pattern of the element (B) has blurred diffraction characteristics, making the ring shape less clear and making it difficult for the user to easily recognize color separation, thereby having improved display quality compared with the comparative example.

[0462] According to an embodiment, the openings of some colors may have a circular shape instead of an ellipse, and will be referred to as Fig. 20 Check this example.

[0463] Fig. 20 is a plan view of a portion of a display panel according to an embodiment.

[0464] Fig. 20 based on Fig. 9 of the embodiments, and with Fig. 9 The difference is that the red opening OPr of the pixel defining layer 380 and the red second opening OPBMr of the light blocking layer 220 are not ellipses but circles.

[0465] For example, the green openings OPg and the blue openings OPb of the pixel defining layer 380 and the green second openings OPBMg and the blue second openings OPBMb of the light blocking layer 220 are all elliptical.

[0466] According to an embodiment, one color opening except for the red color opening among the three color openings may have a circular shape.

[0467] According to an embodiment, one or two of the red openings OPr, the green openings OPg, and the blue openings OPb of the pixel defining layer 380 may have a circular shape, and the rest may have an elliptical shape.

[0468] In addition, the red second openings OPBMr, green second openings OPBMg, and blue second openings OPBMb of the light blocking layer 220 may have shapes corresponding to respective planar shapes of the red openings OPr, green openings OPg, and blue openings OPb of the corresponding pixel defining layer 380, and may have certain horizontal distances from the red openings OPr, green openings OPg, and blue openings OPb of the corresponding pixel defining layer 380, respectively.

[0469] At this time, when the openings OPr, OPg, OPb of the pixel defining layer 380 have an elliptical shape, the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 also have an elliptical shape, and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 can have the same elliptical shape and have the same major axis direction.

[0470] As in Fig. 9 In the embodiment of Fig. 20 In the embodiment, among the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380, the openings having an elliptical shape may have an elliptical shape with different eccentricities even for the same color, and may be arranged at intervals in which the angle formed by each major axis has four or more angles or the angle formed by the major axes is less than 45 degrees.

[0471] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0472] According to an embodiment, elliptical major axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are equally spaced and may be formed at regular intervals or at irregular intervals.

[0473] exist Fig. 20In the embodiment, at least one pair of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 has an elliptical shape.

[0474] As a result, as described above, it can have less color separation of external light or a constant diffraction pattern or color separation regardless of the angle.

[0475] Fig. 20 An example is Fig. 9 An embodiment in which the elliptical shape of 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 elliptical shape can be changed to a circular shape.

[0476] In addition, Fig.18 and Fig.19 In an embodiment, the elliptical shape may be changed to a circular shape for one or two colors.

[0477] In the following, we will Fig.21 and Fig. 22 Reflection characteristics according to eccentricity are examined for various embodiments.

[0478] Fig.21 and Fig. 22 is a diagram showing reflection characteristics according to eccentricity.

[0479] first, Fig.21 Shown in the Figure 7 Reflection characteristics when the eccentricity is changed in a display device with the same eccentricity.

[0480] Fig.21 The eccentricity values ​​described in φ are values ​​of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 .

[0481] exist Fig.21 There are two types of pictures, one is a picture taken with external light provided at a distance of 10 cm, and the other is a picture taken with external light provided at a distance of 30 cm.

[0482] 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 characteristics of external light being reflected and diffracted.

[0483] Reference Fig.21 ,exist Fig.10In the comparative example, the halo of the ring pattern is strongly visible when external light is reflected, but in the example using the ellipse, the eccentricities are 0.5, 0.6, 0.7, and 0.8, and the ring halo is not visible.

[0484] Fig. 22 It shows that Fig. 20 1 and 2. The reflective characteristics in an embodiment where one color has a circular shape rather than an elliptical shape and the other two colors have elliptical shapes.

[0485] exist Fig. 22 In, with Fig. 20 Differently, the blue color has a circular shape, and for example, the blue opening OPb of the pixel defining layer 380 and the blue second opening OPBMb of the light blocking layer 220 have a circular shape, and the remaining openings have an elliptical shape.

[0486] at this time, Fig. 22 The reflection characteristics when the eccentricity of the elliptical opening is changed are shown.

[0487] Fig. 22 The eccentricity values ​​depicted in are values ​​of the plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, and 0 represents a circular shape.

[0488] Reference Fig. 22 ,exist Fig.10 In the comparative example, the halo of the ring pattern is strongly visible when external light is reflected, but in the example including at least one ellipse, the halo is not visible.

[0489] In addition, due to the Fig. 22 of Fig. 20 The corresponding pictures and Fig.21 As shown in Figure 7 No halo is recognized in the picture of the embodiment, so it can be confirmed that Fig. 20 Examples and Figure 7 The embodiments have equivalent effects.

[0490] In the following, we will Figure 23 to Figure 25 See another modified embodiment.

[0491] Figure 23 to Figure 25 is a plan view of a portion of a display panel according to an embodiment.

[0492] First, check Fig.23 Embodiment of the invention.

[0493] Reference Fig.21 and Fig. 22, it is confirmed that the embodiment in which one or two colors have an elliptical shape and the remaining colors have a circular shape has an effect similar to that of the embodiment in which all colors have an elliptical shape.

[0494] Therefore, according to an embodiment, an elliptical shape is used instead of a circular shape, and it can be seen that a similar effect can be achieved even with an eccentricity (greater than 0 and less than 0.2) other than the eccentricity (0.2 to 0.85) defined above.

[0495] Will pass Fig.23 Check out one of these examples.

[0496] Fig.23 yes Fig. 20 A modified example of Fig. 20 The two red openings OPr and OPBMr in are transformed into ellipses with an eccentricity greater than 0 and less than 0.2 instead of circular shapes.

[0497] For example, Fig.23 The embodiment is based on Fig. 9 and each of the red opening OPr of the pixel defining layer 380 and the red second opening OPBMr of the light blocking layer 220 is Fig. 9 and Fig. 20 is different in that it has an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0498] For example, the green and blue openings OPg and OPb of the pixel defining layer 380 and the green and blue second openings OPBMg and OPBMb of the light blocking layer 220 each have an elliptical shape having an eccentricity of 0.2 or more and 0.85 or less.

[0499] According to an embodiment, one additional color other than red among the three color openings may have an elliptical shape having an eccentricity greater than 0 and less than 0.2. For example, according to an embodiment, one or two of the red opening OPr, the green opening OPg, and the blue opening OPb of the pixel defining layer 380 may have an elliptical shape having an eccentricity greater than 0 and less than 0.2, and the rest may have an elliptical shape having an eccentricity of 0.2 or more and 0.85 or less.

[0500] In addition, the red second opening OPBMr, the green second opening OPBMg and the blue second opening OPBMb of the light blocking layer 220 may have shapes corresponding to the corresponding planar shapes of the red opening OPr, the green opening OPg and the blue opening OPb of the corresponding pixel defining layer 380, and may have a certain horizontal distance from the red opening OPr, the green opening OPg and the blue opening OPb of the pixel defining layer 380.

[0501] At this time, the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have the same major axis direction of the ellipse.

[0502] exist Fig.23 In, as in Fig. 9 In the embodiment, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have elliptical shapes with different eccentricities even for the same color, and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may be arranged at intervals, and the angles formed by their respective long axes may have four or more angles, or the angles formed by the long axes may be arranged at intervals less than 45 degrees.

[0503] According to an embodiment, elliptical major axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are equally spaced and may be formed at equal intervals or irregular intervals.

[0504] exist Fig.23 In the embodiment, at least one pair of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 has an elliptical shape having an eccentricity of 0.2 or greater and 0.85 or less.

[0505] As a result, as described above, it can have less color separation of external light or a constant diffraction pattern or color separation regardless of the angle.

[0506] Fig.23 An example is Fig. 9 The elliptical shape of 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 optionally, in Figure 7 or Figure 8 In the embodiment of , this also applies to one or two colors: the elliptical shape can be changed to an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0507] In addition, Fig.18 and Fig.19 In an embodiment, for one or two colors, the elliptical shape can be changed to an elliptical shape with an eccentricity greater than 0 and less than 0.2.

[0508] The above focuses on the embodiment in which the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are spaced apart at regular intervals in a plan view.

[0509] However, according to an embodiment, it may be possible that the horizontal gap between the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 varies according to the position, and will be Fig.24 and Fig.25 Check this example.

[0510] Here, a horizontal gap between the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be greater than 0 μm and less than or equal to 20 μm.

[0511] First, let's look at Fig.24 Embodiment of the invention.

[0512] exist Fig.24 , an embodiment in which the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 have different eccentricities is shown.

[0513] exist Fig.24 In the embodiment, the eccentricity of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have a smaller value compared to the eccentricity of the openings OPr, OPg, OPb of the pixel defining layer 380 corresponding to the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220.

[0514] However, according to an embodiment, the eccentricities of the openings OPr, OPg, OPb of the pixel defining layer 380 may have a smaller value than the eccentricities of the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 .

[0515] Reference Fig.24 , the horizontal intervals between the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are not constant, and it can be seen that there are wide positions and narrow positions.

[0516] exist Fig.24In the embodiment, the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have the same ellipse major axis direction.

[0517] like Fig.24 As shown in, as described above, even if the horizontal interval between the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 is not constant, due to various directions or various eccentricities, color separation of external light rarely occurs, or a constant diffraction pattern or color separation occurs regardless of the angle.

[0518] In addition, even if external light is reflected, the halo as a ring pattern may not be visible.

[0519] exist Fig.24 In, as in Fig. 9 In the embodiment, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may have elliptical shapes with different eccentricities even for the same color, and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 have respective major axes, and the angles formed may have four or more angles, or the angles formed by the major axes may be arranged at intervals of 45 degrees or less.

[0520] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0521] According to an embodiment, the elliptical major axes of the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are equally spaced apart, and they may be formed at equal intervals or irregular intervals.

[0522] According to an embodiment, Fig.24 The portions shown in FIG. 1 where the horizontal spacing is not constant may apply to only one or two colors.

[0523] Will pass Fig.25 Check this example.

[0524] Fig.25 The embodiment is based on Fig.24In the embodiment, only the red opening OPr of the pixel defining layer 380 and the red second opening OPBMr of the light blocking layer 220 have irregular horizontal intervals. It has a structure in which the green opening OPg and the blue opening OPb of the pixel defining layer 380 and the green second opening OPBMg and the blue second opening OPBMb of the light blocking layer 220 have constant horizontal intervals.

[0525] According to an embodiment, one color opening except for the red color opening among the three color openings may have a shape having uneven horizontal intervals.

[0526] For example, according to an embodiment, the horizontal interval between one or two of the red openings OPr, green openings OPg and blue openings OPb of the pixel defining layer 380 and the corresponding second openings of the red second openings OPBMr, green second openings OPBMg and blue second openings OPBMb of the light blocking layer 220 may not be constant.

[0527] exist Fig.25 In the embodiment, at least one pair among the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 and the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 has a shape having a constant horizontal interval.

[0528] As a result, as described above, it can have less color separation of external light or a constant diffraction pattern or color separation regardless of the angle.

[0529] In addition, even if external light is reflected, the halo as a ring pattern may not be visible.

[0530] 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 embodiment may also be modified so that the horizontal interval is not constant.

[0531] In addition, Fig.18 and Fig.19 In an embodiment, the horizontal interval may be varied to be non-constant.

[0532] Next, we will Fig.26 The structure of one unit pixel having another arrangement is examined.

[0533] Fig.26 is a plan view showing a configuration of a unit pixel of one of the display panels according to the embodiment.

[0534] first, Fig.26 The elements (A) and Fig.26 The element (B) is the above Figure 7 A modified example of Figure 7 Examples of having unit pixels divided into different colors are variously illustrated.

[0535] exist Fig.26 In element (A), a unit pixel divided into red is shown, and it is an embodiment in which two red light-emitting areas are included among four adjacent light-emitting areas and each includes one green light-emitting area and one blue light-emitting area.

[0536] In addition, Fig.26 In element (A), four adjacent red light-emitting areas have a diamond shape, and four adjacent green light-emitting areas and four adjacent blue light-emitting areas have a rectangular shape, respectively.

[0537] exist Fig.26 In element (B), a unit pixel divided into blue is shown, and it is an embodiment in which two blue light-emitting areas are included among four adjacent light-emitting areas and each includes one red light-emitting area and one green light-emitting area.

[0538] In addition, Fig.26 In element (B), four adjacent blue light-emitting areas have a diamond shape, and four adjacent red light-emitting areas and four adjacent green light-emitting areas have a rectangular shape, respectively.

[0539] Fig.26 The element (C) shows the Figure 7 , Fig.26 The elements (A) and Fig.26 The pixel arrangement of the element (B) is an embodiment of a different pixel arrangement.

[0540] Reference Fig.26 Element (C), the second row containing only the green light-emitting area is set between the first row and the third row containing the red light-emitting area and the blue light-emitting area.

[0541] In addition, in the first row, the red light emitting areas and the blue light emitting areas are alternately arranged in a repeated manner.

[0542] The green light emitting region may be positioned on a diagonal line connecting the red light emitting regions and / or a diagonal line connecting the blue light emitting regions.

[0543] Fig.26 One light emitting region described in FIG. 1 corresponds to one opening OP of the pixel defining layer 380 and one second opening OPBM of the light blocking layer 220 .

[0544] exist Fig.26 In the embodiment, it is shown as having Figure 7 However, according to the embodiment, it can be modified into the various embodiments mentioned in this application.

[0545] As an example, in Fig.26 In the arrangement of the light emitting areas of the element (C), the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 corresponding to the light emitting area of ​​each color may be as shown in FIG. Figure 7 , or you can change the direction of the major axis as in Figure 8 Change the eccentricity of the ellipse as in

[0546] In addition, the above-described modified structure or a modified structure described later may be applied in various ways.

[0547] In the following, through Fig. 27 and Fig.28 , the reflectance characteristics of unit pixels divided into green, red, and blue are compared with the comparative example.

[0548] Fig. 27 and Fig.28 is a diagram showing the effect of pixel arrangement.

[0549] First, in Fig. 27 In the Figure 7 The unit pixels divided into green, Fig.26 The unit pixels divided into red in the element (A) and Fig.26 The blue unit pixels in the element (B) are divided into Fig.10 Reflectance properties compared to the comparative example in .

[0550] Reference Fig. 27 , it can be seen that, with Fig.10 Compared with the comparative example, all unit pixels divided into red / green / blue have no visible annular halos.

[0551] Specifically, by referring to Fig. 27 In the diffraction pattern obtained by providing external light at 30 cm, a plurality of ring patterns can be seen in the comparative example, but it can be confirmed that such a ring pattern is not formed in each example, thereby resulting in reduced reflection of external light.

[0552] Fig.28 Shown with Fig. 27 Examples of different ways of dividing a unit pixel.

[0553] exist Fig. 27 In the divided unit pixel, the divided color luminous areas have Figure 7 The diamond shape shown in Fig.28In the example, the divided color luminous areas of the divided unit pixels are oriented in one direction, such as Fig.26 As shown in element (C), they are arranged continuously in one direction (e.g., column direction).

[0554] Reference Fig.28 , when the division unit pixel of each color is Fig.10 When compared with the comparative example, it can be seen that the ring pattern generated in the comparative example is not visible in the present embodiment, thereby having reduced reflection of external light.

[0555] In the above, the focus is on the embodiment in which the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 both have an ellipse or an ellipse-like shape.

[0556] However, according to embodiments, only one of the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 may have an ellipse or ellipse-like shape and the other may have a circular shape, and embodiments related thereto will be examined below.

[0557] First, through Fig.29 and Fig.30 , the second opening OPBM of the light blocking layer 220 has an elliptical shape, the opening OP of the pixel defining layer 380 has a circular shape, and an embodiment in which the second opening OPBM of the light blocking layer 220 contacts the opening OP of the pixel defining layer 380 will be examined.

[0558] Fig.29 and Fig.30 is a plan view of a portion of a display panel according to an embodiment.

[0559] exist Fig.29 , only the opening OP of one pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 corresponding thereto are shown.

[0560] exist Fig.29 In the embodiment, the pixel defining layer 380 is positioned on an outer portion of the opening OP, and the light blocking layer 220 is also positioned on an outer portion of the second opening OPBM.

[0561] exist Fig.29 In the embodiment of FIG. 1 , the opening OP of the pixel defining layer 380 has a circular planar shape, and the second opening OPBM of the light blocking layer 220 has an elliptical planar shape.

[0562] The elliptical second opening OPBM of the light blocking layer 220 has a structure contacting the circular opening OP of the pixel defining layer 380 at two points.

[0563] exist Fig.29In the embodiment, the radius value Rop of the circular shape of the opening OP of the pixel defining layer 380 is half the minor axis length of the elliptical shape of the second opening OPBM of the light blocking layer 220, which is the same as Ropbm1, and is less than half the length of the major axis of the ellipse, Ropbm2.

[0564] A half value Ropbm2 of the major axis length of the elliptical shape may be greater than a radius value Rop of the circular shape of the opening OP of the pixel defining layer 380 by more than 0 μm and 20 μm or less, and according to an embodiment, 4.5 μm or more and 10 μm or less.

[0565] The length of the major axis of the ellipse may change the horizontal interval according to the thickness of a layer (eg, an encapsulation layer) positioned between the light blocking layer 220 and the pixel defining layer 380 , and the encapsulation layer may have a thickness of about 6 μm.

[0566] Here, the ellipse has two foci, may have a shape connecting points at which the sum of distances from the two foci is constant, and may have a major axis and a minor axis.

[0567] The eccentricity of an ellipse is the distance between the two foci divided by the length of the major axis.

[0568] 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.

[0569] The eccentricity value of the elliptical shape of the second opening OPBM of the light blocking layer 220 may vary according to embodiments.

[0570] The direction of the long axis of the second opening OPBM of the light blocking layer 220 may also vary.

[0571] exist Fig.29 In the embodiment, the opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 are in contact at two points in a plan view, but due to errors during actual processing, a portion of one side of the opening OP of the pixel defining layer 380 may be covered by the light blocking layer 220 without overlapping with the second opening OPBM of the light blocking layer 220.

[0572] In this case, it may have the same Fig.35 The effect of the embodiment is similar to the effect.

[0573] With Fig.29 The opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 having the same structure as shown in FIG. Fig.30 As shown in FIG. 8 , it is arranged in the display area DA.

[0574] exist Fig.30 In the figure, based on the light-emitting layers displaying the three primary colors of red, green and blue, the opening OP of the pixel defining layer 380 corresponding to each light-emitting layer and the second opening OPBM of the light blocking layer 220 are opened to openings OPr, OPg, OPb and second openings OPBMr, OPBMg, OPBMb, respectively.

[0575] Here, r, g, and b may correspond to red, green, and blue, respectively.

[0576] The second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be arranged at various angles, and the red second openings OPBMr, green second openings OPBMg, and blue second openings OPBMb of the light blocking layer 220 may be arranged at various angles. The second openings OPBMb may have different eccentricities.

[0577] Each of the second openings OPBMr, OPBMg, OPBMb of the same color may be formed with the same or different eccentricities.

[0578] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0579] At this time, the red openings OPr, green openings OPg, and blue openings OPb of the pixel defining layer 380 may be formed as circles having different radii, and the same color openings OPr, OPg, OPb may each have the same or different radii.

[0580] The openings OPr, OPg, OPb of one pixel defining layer 380 correspond to the second openings OPBMr, OPBMg, OPBMb of one light blocking layer 220 , respectively.

[0581] For example, within each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 , there are openings OPr, OPg, OPb of the pixel defining layer 380 corresponding to each of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 .

[0582] The corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 and the corresponding openings OPr, OPg, OPb of the pixel defining layer 380 may overlap each other in a plan view.

[0583] exist Fig.29In the embodiment of the present invention, the circular openings OPr, OPg, OPb of the pixel defining layer 380 and the elliptical second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 contact each other at two points in a plan view. However, according to an embodiment, the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are large, so that the circular openings OPr, OPg, OPb of the pixel defining layer 380 are formed inside the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 in a plan view (see FIG. Fig.33 ), or the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are relatively small, so that the light blocking layer 220 can cover some of the circular openings OPr, OPg, OPb of the pixel defining layer 380 in a plan view (see Fig.35 ).

[0584] exist Fig.30 , the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged in various directions, and the angle of each arrangement of the second openings OPBMr, OPBMg, OPBMb may be described based on the direction of the major axis of the ellipse.

[0585] According to an embodiment, the angle formed by each major axis of the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may have more than 4 different angles, and the angles formed by the major axes may be arranged at intervals of 45 degrees or less.

[0586] As an example, looking at the specific angle relationships focusing on an embodiment having five angles, the relationship is as follows.

[0587] The embodiment having five angles is formed by each major axis at intervals of 36 degrees, and in the case where one major axis has 0 degree based on the first direction DR1, it has angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees, a total of five angles.

[0588] The interval between the major axis angles can be checked by dividing the angle of 180 degrees by 5, which is the number of directions. This is because two angles with an angle of 180 degrees in 360 degrees have substantially the same major axis direction of the ellipse, which can be calculated by dividing the number based on 180 degrees.

[0589] The plurality of second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be arranged at equal intervals at a specific angle of 45 degrees or less.

[0590] However, according to an embodiment, an angle formed by a major axis of each of the second openings OPBMr, OPBmg, OPBMb may be arranged at intervals of one of 45 degrees or less, and may be arranged at irregular intervals.

[0591] Embodiments in which the major axes of the openings are arranged at irregular intervals may be intentionally arranged to reduce the diffraction pattern, or may be arranged at irregular intervals due to processing errors.

[0592] In order to make the unit pixel including the red opening, the green opening, and the blue opening have a square structure, it is appropriate to divide the major axis angle into squares equal to an integer (for example, 2 2 , 3 2 , 4 2 , 5 2 etc.) to form them.

[0593] 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.

[0594] In this way, Fig.31 The reflection characteristics when it is observed that the openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have an elliptical shape are examined.

[0595] Fig.31 is a comparison example and Fig.30 Photograph of the reflective properties of an example.

[0596] Fig.31 Element (A) shows the diffraction pattern and dispersion of the reflected light of the comparative example, Fig.31 The element (B) shows Fig.30 Example of diffraction pattern and dispersion of reflected light.

[0597] Here, in the comparison example, Fig.10 As shown in FIG. 1 , the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are all circular.

[0598] First, check Fig.31 In the comparative example of element (A), the diffraction pattern has multiple ring shapes. Each ring shape can be clearly seen, and each ring represents a different color, so the user can see that the reflected light is color-separated.

[0599] On the contrary, refer to Fig.31 From the element (B), it can be seen that the diffraction pattern is relatively unclear and the shape of the ring is not clear.

[0600] Such unsharpness in the diffraction pattern may occur due to the following reasons.

[0601] First, if the openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape, and the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have an elliptical shape, the distance between the two openings may not be constant. As a result, the diffraction pattern caused by the light emitted by the light-emitting layer positioned within the openings OPr, OPg, OPb of the pixel defining layer 380 being refracted at the side walls of the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may vary. Therefore, when the diffraction patterns are mixed, less constructive interference occurs and the diffraction patterns are blurred. Therefore, according to the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, the diffraction pattern expands and becomes unclear. In addition, referring to Fig.30 Since the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged at various angles, the directions of the diffraction patterns vary, causing blur formation by mixing with each other, and a scattering effect occurs.

[0602] Due to this mixing of the diffraction patterns, the diffraction patterns are not clear and it is difficult for the user to see the diffraction patterns, thereby reducing the degree of display quality degradation.

[0603] According to an embodiment, the major axes of the elliptical second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be arranged at four or more angles, or may be arranged at intervals of 45 degrees or less, and in this case, weakened diffraction patterns and color separation may occur.

[0604] In the following, through Fig.32 , will check for Fig.29 In the embodiment shown in FIG. , the major axes of the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 form two embodiments of a specific angle gap.

[0605] Fig.32 Arranged at various angles Fig.29 A plan view of a portion of a display panel in an embodiment.

[0606] first, Fig.32 Element (A) shows an example in which the major axes of the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged at an angular interval of 22.5 degrees.

[0607] Fig.32The element (B) shows the major axis of the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220. Fig.32 An embodiment in which the element (A) is arranged at an angular interval that is half the angular interval (e.g., 11.25 degrees).

[0608] Here, at an angle interval of 22.5 degrees Fig.32 In the embodiment of the element (A), the number of angles formed by the major axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 having the elliptical shape may be 8.

[0609] For example, since 180 degrees divided by 8 is 22.5 degrees, the major axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be arranged in eight directions.

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

[0611] With an angular spacing of 11.25 degrees Fig.32 An embodiment of the element (B) has Fig.32 The number of angles is twice that of the embodiment of the element (A), and the major axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged in a total of 16 directions.

[0612] In such Fig.32 In the two embodiments of the arrangement shown in , the long axis arrangement angles of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are greater than 4, so the diffraction pattern is mixed without having a specific direction, and the user experiences diffraction, and the display quality can be improved because the directionality or color separation of the pattern is not easily recognized.

[0613] exist Fig.32 , the major axes of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are arranged at the same 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 content, if Fig.29 As shown in FIG. 1 , an embodiment is examined in which the opening OP of the pixel defining layer 380 has a circular shape, the second opening OPBM of the light blocking layer 220 has an elliptical shape, and the circle and the ellipse contact each other in a plan view.

[0615] However, the opening OP of the pixel defining layer 380 or the second opening OPBM of the light blocking layer 220 may be relatively large, and will be referred to as Figure 33 to Figure 39 This embodiment is described.

[0616] First, through Fig.33 and Fig.34 , an embodiment in which the opening OP of the inspection pixel defining layer 380 is positioned within the second opening OPBM of the light blocking layer 220 so that the opening OP of the pixel defining layer 380 is not blocked by the light blocking layer 220 .

[0617] Fig.33 and Fig.34 is a plan view of a portion of a display panel according to an embodiment.

[0618] First, in Fig.33 In the embodiment, the second openings OPBM of the light blocking layer 220 may be formed at various intervals gap1, gap2, gap3 according to how large the openings OP of the pixel defining layer 380 are formed.

[0619] Fig.33 A plan view is shown in which the second opening OPBM of the light blocking layer 220 is large so that the circular opening OP of the pixel defining layer 380 is positioned within the second opening OPBM of the light blocking layer 220 .

[0620] Therefore, in Fig.33 In the embodiment, the radius Rop of the circular shape of the opening OP of the pixel defining layer 380 is smaller than half the minor axis length Ropbm1 of the elliptical shape of the second opening OPBM of the light blocking layer 220. It is smaller than half the major axis length Ropbm2 of the elliptical shape.

[0621] A half value Ropbm2 of the major axis length of the elliptical shape may be greater than a radius value Rop of the circular shape of the opening OP of the pixel defining layer 380 by more than 0 μm and less than or equal to 20 μm.

[0622] For example, in Fig.33 In the element (A), the minimum horizontal gap gap1 between the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 in a plan view is relatively small compared with gap2 and gap3, but Fig.33 , which has a relatively large minimum horizontal gap gap2, and Fig.33 Element (C) shows the largest minimum horizontal gap gap3.

[0623] exist Fig.33 Elements (A) to Fig.33 In the element (C), the ellipse eccentricities of the second openings OPBM of the light blocking layer 220 may also be different from each other.

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

[0625] exist Fig.33 In the embodiment of FIG. 1 , due to an error during actual processing, a portion of one side of the opening OP of the pixel defining layer 380 does not overlap with the second opening OPBM of the light blocking layer 220 and is covered by the light blocking layer 220 .

[0626] In addition, the opening OP of the pixel defining layer 380 is positioned within the second opening OPBM of the light blocking layer 220 , but may be positioned closer to one boundary or may be in contact with one boundary plane.

[0627] Fig.34 The embodiment in which the major axes of the ellipses of the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are arranged at various angles is shown. Fig.34 The second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 in FIG. 2 have different eccentricities for the respective colors.

[0628] According to an embodiment, two openings corresponding to the same color among the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have different eccentricities, and according to an embodiment, may have the same eccentricity.

[0629] In addition, the major axes of the elliptical second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be arranged at four or more angles or may be arranged at intervals of 45 degrees or less.

[0630] Fig.33 The embodiment can also be as follows Fig.32 There are 8 major axis directions arranged at an angle of 22.5 degrees as shown in the element (A), or it can be as follows Fig.32 As shown in element (B), 16 major axis directions are arranged at an angular interval of 11.25 degrees.

[0631] exist Fig.34 In the embodiment, the long axis direction of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer is arranged at the same interval, but Fig.33 In the embodiment, they may be arranged at irregular intervals at an angle of 45 degrees or less.

[0632] Hereinabove, the embodiment in which the opening OP of the pixel defining layer 380 is positioned within the second opening OPBM of the light blocking layer 220 has been examined.

[0633] In the following, through Figure 35 to Figure 39 , a structure in which the second opening OPBM of the light blocking layer 220 is relatively small so that part of the circular opening OP of the pixel defining layer 380 is covered by the flat light blocking layer 220 will be examined.

[0634] First, through Fig.35 and Fig.36 The relationship between the second opening OPBM of the light blocking layer 220 and the opening OP of the pixel defining layer 380 is checked.

[0635] Fig.35 and Fig.36 is a plan view of a portion of a display panel according to an embodiment.

[0636] exist Fig.35 , only the opening OP of one pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 corresponding thereto are shown.

[0637] The second opening OPBM of the light blocking layer 220 overlaps a portion of the opening OP of the pixel defining layer 380 , and the remaining portion of the opening OP of the pixel defining layer 380 overlaps the light blocking layer 220 .

[0638] As a result, the light emitting layer positioned within the opening OP of the pixel defining layer 380 may be partially blocked by the light blocking layer 220 .

[0639] exist Fig.35 , a portion of the opening OP of the pixel defining layer 380 is illustrated with a dotted line to indirectly illustrate that the corresponding portion is positioned below the light blocking layer 220 and is covered by the light blocking layer 220 .

[0640] exist Fig.35 In the embodiment, due to an error during actual processing, the portion of the opening OP of the pixel defining layer 380 blocked by the light blocking layer 220 may not be constant on both sides, and the area on one side may be larger.

[0641] In addition, one side of the opening OP of the pixel defining layer 380 may be positioned within or in contact with the second opening OPBM of the light blocking layer 220 , and only the other side may be covered by the light blocking layer 220 .

[0642] like Fig.35 As shown in , if a portion of the opening OP of the pixel defining layer 380 is covered by the light blocking layer 220 , light emitted from the light emitting layer within the opening OP may not be provided to the front side, which may be inefficient in terms of light.

[0643] However, the size of the opening OP of the pixel defining layer 380 is related to the lifetime of the light emitting layer positioned therein, and thus the size of the opening OP may not be reduced to maintain the lifetime above a certain level.

[0644] With Fig.35The opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 having the same structure as shown in FIG. Fig.36 Arrangement shown in .

[0645] Reference Fig.36 , the elliptical major axes of the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are arranged at various angles.

[0646] Here, the openings OPr, OPg, OPb of the pixel defining layer 380 all have a circular shape, and portions of the openings OPr, OPg, OPb overlap with the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 and are not covered by the light blocking layer 220, but the remaining portions are covered by the light blocking layer 220 because they do not overlap with the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220.

[0647] in addition, Fig.36 The second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 in FIG. 2 have different eccentricities for the respective colors.

[0648] According to an embodiment, two openings corresponding to the same color among the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have different eccentricities. However, in some embodiments, they may have the same eccentricity.

[0649] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0650] In addition, the major axes of the elliptical second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be arranged at four or more angles or may be arranged at intervals of 45 degrees or less.

[0651] Fig.35 The embodiment can also be as follows Fig.32 There are 8 major axis directions arranged at an angle of 22.5 degrees as shown in the element (A), or it can be as follows Fig.32 As shown in element (B), 16 major axis directions are arranged at an angular interval of 11.25 degrees.

[0652] exist Fig.36 In the embodiment, the long axis direction of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 is arranged at the same interval, but in Fig.35 In the embodiment, they can be arranged at irregular intervals at an angle of 45 degrees or less depending on the embodiment.

[0653] As mentioned above, in Fig.37The diffraction characteristics of external light reflected in an embodiment in which some of the openings OPr, OPg, OPb of the pixel defining layer 380 are covered by the light blocking layer 220 are examined.

[0654] Fig.37 is a comparison example and Fig.36 Photograph of the reflective properties of an example.

[0655] Fig.37 The element (A) is as mentioned above Fig.10 The openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are shown in the diffraction pattern of the comparative example, which are all circular.

[0656] Fig.37 The element (B) shows Fig.36 Diffraction pattern and dispersion of reflected light of embodiment.

[0657] Compare Fig.37 The elements (B) and Fig.37 From the element (A), we can see that Fig.37 The diffraction pattern in element (B) is relatively unclear and the shape of the ring is not clearly visible.

[0658] exist Fig.35 and Fig.36 In the embodiment, some of the openings OPr, OPg, OPb of the pixel defining layer 380 are covered by the light blocking layer 220, but Fig.29 As shown in FIG. 1 , the openings OPr, OPg, OPb are in contact with the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220, or as shown in FIG. Fig.33 As shown in , the openings OPr, OPg, OPb of the pixel defining layer 380 are within the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220, and it can be seen that there is no significant difference in the diffraction patterns of the examples in which the openings OPr, OPg, OPb are positioned in all ways.

[0659] For example, even in Fig.36 In the embodiment, the gap between the two openings is also not constant, so the resulting diffraction patterns may be different, and when the individual diffraction patterns are mixed, the entire diffraction pattern is blurred.

[0660] In addition, since the elliptical second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are arranged at various angles, the directions of the diffraction patterns vary and are mixed with each other, the diffraction patterns are blurred, and a scattering effect occurs.

[0661] As a result, it is difficult for a user to recognize (eg, see) the diffraction pattern, and the degree of degradation of display quality is reduced.

[0662] In the above, the embodiments are described separately based on whether the openings OPr, OPg, OPb of the pixel defining layer 380 and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 are in contact with each other in a plan view or are not in contact with each other in a plan view, and based on whether all or part of the openings OPr, OPg, OPb of the pixel defining layer 380 are positioned within the second openings OPBMr, OPBMg, OPBMb.

[0663] Each of these embodiments can reduce the reflection diffraction of external light by changing the arrangement of the major axis direction of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 or by variously modifying the eccentricity of the ellipse.

[0664] In the following, through Fig.38 and Fig.39 , embodiments in which the eccentricity of an ellipse or the arrangement of the major axis is changed are discussed.

[0665] Fig.38 and Fig.39 is a plan view of a portion of a display panel according to an embodiment.

[0666] Fig.38 Examples in which the second opening OPBM of the light blocking layer 220 is formed at various eccentricities are shown, and Fig.39 Embodiments in which the second opening OPBM of the light blocking layer 220 has various angles and is formed at various eccentricities are shown.

[0667] According to an embodiment, the second openings OPBM of the light blocking layer 220 are formed at the same eccentricity, but may be formed at various angles.

[0668] Check Fig.38 An embodiment of the invention is as follows.

[0669] exist Fig.38 , the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have an elliptical shape having two or more different eccentricities.

[0670] According to an embodiment, respective openings of the same color may have elliptical shapes with different eccentricities.

[0671] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0672] exist Fig.38 In the embodiment, the major axis direction of the ellipse has only two directions: a first direction DR1 and a second direction DR2.

[0673] Depending on the embodiment, it may have four or fewer directions.

[0674] pass Fig.38 , the planar structure of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 will be examined in detail.

[0675] exist Fig.38 , the openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape, and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have an elliptical plane shape.

[0676] Some of the openings OPr, OPg, OPb of the pixel defining layer 380 do not overlap the corresponding second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 on a plane and are thus blocked by the light blocking layer 220 .

[0677] The second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are ellipses, and their major axes are arranged only in two directions of the first direction DR1 and the second direction DR2.

[0678] The red second openings OPBMr, the green second openings OPBMg, and the blue second openings OPBMb of the light blocking layer 220 may each be formed as an ellipse having at least two different eccentricities.

[0679] In addition, Fig.38 In the embodiment, the second openings OPBMr, OPBMg, OPBMb of the same color of the light blocking layer 220 may have at least two different eccentricities and have different elliptical plane shapes.

[0680] In which the openings have the same color but have different elliptical shapes with different eccentricities Fig.38 In the case of the embodiment, elliptical shapes with different eccentricities can be arranged in various positions at various ratios.

[0681] According to an embodiment, the same number of elliptical shapes having different eccentricities may be included in the display area DA, and according to an embodiment, they may be included in different numbers.

[0682] Reference Fig.38 , an angle formed by each of the major axes of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 with respect to the first direction DR1 and the second direction DR2 is 0 degrees.

[0683] 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 four or less.

[0684] For example, in Fig.38 In an embodiment of the present invention, various elliptical shapes with different eccentricities are formed to reduce color separation of external light, or to produce a constant diffraction pattern or color separation regardless of the angle.

[0685] Therefore, even if the direction of the major axis of the ellipse does not change, Fig.38 Embodiments may also achieve constant color separation and / or constant diffraction.

[0686] Will check Fig.39 Embodiment of the invention.

[0687] exist Fig.39 In the embodiment, even for the same color, the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have elliptical shapes with different eccentricities. In addition, the angles formed by the major axes of the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may be greater than four different angles or spaced at intervals of 45 degrees or less.

[0688] Here, the eccentricity of the elliptical shape may be in the range of 0.2 to 0.85.

[0689] exist Fig.39 In the embodiments, the eccentricity of the ellipse is varied, and the direction of the major axis of the ellipse is also arranged in various ways.

[0690] Therefore, the plurality of openings OPr, OPg, OPb of the pixel defining layer 380 or the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have four or more angles, or are spaced apart at an angle of 45 degrees or less. In addition, the eccentricity of the ellipse is changed so that color separation of external light occurs less, or a constant, unclear diffraction pattern occurs regardless of the angle.

[0691] According to an embodiment, the major axis directions of the plurality of second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be formed at equal intervals or irregular intervals.

[0692] although Fig.38 and Fig.39 Shown based on Fig.35 but can be similarly modified Fig.29 or Fig.33 Embodiment of the invention.

[0693] Fig.38 and Fig.39A rough comparison of the above embodiments and additional embodiments that change only the major axis direction of the ellipse in various ways while keeping the eccentricity constant can be shown in Table 2 below.

[0694]

Table 2

[0695]

[0696] exist Fig.29 , Fig.33 and Fig.35 In the embodiment, the second opening OPBM of the light blocking layer 220 has an eccentricity.

[0697] However, according to the embodiment, as Fig.17 As shown in FIG. 2 , the second opening OPBM of one light blocking layer 220 may be formed by merging at least two elliptical shapes having different eccentricities.

[0698] In the following, reference is made to Fig.40 , the opening OP of the pixel defining layer 380 has a circular shape, and the second opening OPBM of the light blocking layer 220 is formed by merging at least two elliptical shapes having different eccentricities, and an example of one of the embodiments having the formed elliptical shape will be examined.

[0699] Fig.40 is a diagram showing a structure in which ellipses having different eccentricities are combined.

[0700] exist Fig.40 , the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 are shown to be Fig.17 An example of arranging the merged elliptical shapes in various major axis directions in the same manner as the element (C).

[0701] exist Fig.40 In the embodiment of the present invention, the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 and the openings OPr, OPg, OPb of the pixel defining layer 380 may be as follows: Fig.29 shown in contact with each other.

[0702] However, according to the embodiment, as Fig.33 As shown in FIG. 1 , the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may be formed to be larger than the openings OPr, OPg, OPb of the pixel defining layer 380, or as shown in FIG. Fig.35 As shown in , the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 may have a structure covering a portion of the openings OPr, OPg, OPb of the pixel defining layer 380 .

[0703] exist Fig.40, only one unit pixel is shown, and the one unit pixel includes one red opening OPr, OPBMr, one blue opening OPb, OPBMb, and two green openings OPg, OPBMg, and is a green-divided unit pixel.

[0704] exist Fig.40 In the embodiment, the openings OPr, OPg, OPb of the pixel defining layer 380 have a circular shape, and the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 have a merged elliptical shape, and the direction of each major axis may also be different.

[0705] like Fig.40 As shown in FIG. , the second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 use an ellipse that is a combination of two ellipses having different eccentricities, may have four or more angles, and angles formed by major axes may be arranged at intervals of 45 degrees or less.

[0706] Additionally, the eccentricity of the two ellipses used for merging may vary, and thus the size of the merged ellipse may also vary.

[0707] In addition, according to the embodiment, two ellipses having different eccentricities for respective colors may be combined, and even if they are the same color, two ellipses having different eccentricities may be combined to form various ellipses.

[0708] On the other hand, the openings OPr, OPg, OPb of the pixel defining layer 380 and the corresponding second openings OPBMr, OPBMg, OPBMb of the light blocking layer 220 may have a constant distance in a plan view or a horizontal distance greater than 0 μm and less than or equal to 20 μm.

[0709] The following is an examination of the reflected light diffraction characteristics of an embodiment using an elliptical shape formed by combining two ellipses of different eccentricities.

[0710] Fig.41 is a diagram illustrating a merged elliptical structure and its reflection characteristics according to an embodiment.

[0711] Fig.41 Element (A) shows an embodiment in which the openings of each color have the same merged elliptical shape but the major axis direction has four or more angles.

[0712] exist Fig.41 In the element (B), it is shown Fig.41 Diffraction characteristics of reflected light in element (A).

[0713] and Fig.37 Compared with the comparative example of element (A), it can be seen that Fig.41 The diffraction characteristics of element (B) have a blurred reflection diffraction pattern, the ring shape is not very clear, and it is difficult for users to see the separated colors.

[0714] As a result, compared with the comparative example, Fig.41 The example shown in element (A) may also have improved display quality.

[0715] According to an embodiment, the second openings OPBMr, OPBmg, OPBMb of the light blocking layer 220 have a circular shape, and the openings OPr, OPg, OPb of the pixel defining layer 380 have an elliptical shape or a nearly elliptical shape, which will be Fig.42 Brief inspection.

[0716] Fig.42 is a plan view of a portion of a display panel according to an embodiment.

[0717] exist Fig.42 , only the opening OP of one pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 corresponding thereto are shown.

[0718] The second opening OPBM of the light blocking layer 220 has a circular shape, and the opening OP of the pixel defining layer 380 has an elliptical shape.

[0719] In addition, the second opening OPBM of the light blocking layer 220 overlaps a portion of the opening OP of the pixel defining layer 380 , and the remaining portion of the opening of the pixel defining layer 380 is covered by the light blocking layer 220 .

[0720] As a result, the light emitting layer positioned within the opening OP of the pixel defining layer 380 may be partially blocked by the light blocking layer 220 .

[0721] exist Fig.42 , a portion of the opening OP of the pixel defining layer 380 is illustrated with a dotted line to indirectly illustrate that the corresponding portion is positioned below the light blocking layer 220 and is covered by the light blocking layer 220 .

[0722] exist Fig.42 In the embodiment, due to errors during actual processing, the portion of the opening OP of the pixel defining layer 380 blocked by the light blocking layer 220 may not be constant on both the top and the bottom, and the area on one side may be larger.

[0723] In addition, one side of the opening OP of the pixel defining layer 380 may be positioned within or in contact with the second opening OPBM of the light blocking layer 220 , and only the other side may be covered by the light blocking layer 220 .

[0724] like Fig.42As shown in FIG. 3 , if a portion of the opening OP of the pixel defining layer 380 is covered by the light blocking layer 220 , light emitted from the light emitting layer within the opening OP may not be provided to the front side, thereby reducing light efficiency.

[0725] However, the size of the opening OP of the pixel defining layer 380 is related to the lifetime of the light emitting layer positioned therein, and thus the size of the opening OP may not be reduced to maintain the lifetime above a certain level.

[0726] According to an embodiment, the long axis directions of the openings OP of the pixel defining layer 380 may be arranged differently, and the angles formed by the long axes may have four or more angles. In addition, the angles formed by the long axes may be arranged at intervals of 45 degrees or less.

[0727] According to an embodiment, ellipses having different eccentricities may have a merged shape.

[0728] The eccentricity of the two ellipses used for merging can be varied, and the size of the merged ellipse can also be varied.

[0729] In addition, according to the embodiment, two ellipses having different eccentricities for respective colors may be combined, and even if they are the same color, two ellipses having different eccentricities may be combined to form various ellipses.

[0730] The opening OP of the pixel defining layer 380 and the corresponding second opening OPBM of the light blocking layer 220 may have a horizontal gap of 0 μm or more and 20 μm or less.

[0731] Some variations of Table 2 can also be applied Fig.42 Embodiment of the invention.

[0732] Fig.42 An embodiment similar to the above Fig.35 In the embodiment, and because the distance between the two openings is not constant, the diffraction patterns generated may be different, and when the individual diffraction patterns are mixed, the entire diffraction pattern is blurred.

[0733] As a result, it is difficult for a user to recognize (eg, see) the diffraction pattern, and the degree of degradation of display quality is reduced.

[0734] According to an embodiment, the second opening OPBM of the light blocking layer 220 has a circular shape, and the opening OP of the pixel defining layer 380 has an elliptical shape, and variations in which the two openings contact each other or one opening is positioned within the other are also possible.

[0735] In the following, we will Fig.43 The planar structure of the color filters 230R, 230G, 230B according to the embodiment is examined in detail.

[0736] Fig.43 is a plan view of a display area including a color filter according to an embodiment.

[0737] Fig.43 is more clearly shown Fig.26 A diagram of a planar structure of color filters 230R, 230G, and 230B in an embodiment of element (C).

[0738] Refer to the cross-sectional view Figure 6 , adjacent color filters 230R, 230G, 230B have a structure in which they overlap each other on the light blocking layer 220.

[0739] The planar structure of the overlapping area can be varied, and one of the planar structures in this embodiment can be as follows: Fig.43 The shown in FIG has a diamond shape.

[0740] For example, each of the color filters 230R, 230G, 230B covers the corresponding opening OP of the pixel defining layer 380 and the second opening OPBM of the light blocking layer 220 , and has a rhombus shape.

[0741] Reference Fig.43 , the color filters 230R, 230G, 230B are each shown with different hatching lines, and the boundary between adjacent color filters 230R, 230G, 230B is shown as a single line.

[0742] However, some areas of actually adjacent color filters 230R, 230G, 230B may be as shown in FIG. Figure 6 are shown superimposed on each other, and the superimposed portion is positioned at Fig.43 At the boundary line of the color filters 230R, 230G, and 230B.

[0743] According to an embodiment, instead of the light blocking layer 220 , a light blocking region of a color filter in which at least two color filters 230R, 230G, 230B are overlapped may be formed.

[0744] In the following, through Figures 44 to 48 , an embodiment will be described that does not include a light blocking layer and includes a light blocking region of a color filter in which at least two color filters 230R, 230G, 230B are stacked.

[0745] First, through Fig.44 and Fig.45 Come check Figure 6 The modified structure.

[0746] Fig.44 and Fig.45 is a schematic cross-sectional view of a display panel according to an embodiment.

[0747] In the following, we will first refer to Fig.44 Looking at the structure of the light emitting display panel DP according to the embodiment, and to the extent that an element is not described in detail with respect to this figure, it can be understood that the element is at least similar to the corresponding element that has been described elsewhere within the present disclosure.

[0748] according to Fig.44 The light emitting display panel DP of the embodiment may display an image by forming a light emitting diode on the substrate 110, and may detect a touch by including a plurality of sensing electrodes 540 and 541. Light emitted from the light emitting diode and the color filters 230R, 230G, 230B also has the color characteristics of the color filters 230R, 230G, 230B.

[0749] In addition, a black light blocking layer that blocks 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.

[0750] The region where visible light is blocked by overlapping at least two color filters is referred to as a light blocking region. Fig.44 In the embodiment of FIG. 2 , the blue color filter 230B, the red color filter 230R, and the green color filter 230G are sequentially used.

[0751] The order of the color filter stacking may vary depending on the embodiment.

[0752] In addition, according to Fig.44 In an embodiment, a polarizer is not provided 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 an upper portion of the pixel defining layer 380 is formed with a light blocking region in which two or more color filters are stacked, so that even if external light enters the inside, it is reflected from an anode, etc., and is not transmitted to a user.

[0753] For example, the color filters 230R, 230G, 230B are positioned on the third sensing insulation layer 511 .

[0754] The color filters 230R, 230G, and 230B are a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light.

[0755] In a plan view, each of the color filters 230R, 230G, 230B may overlap an anode electrode of a light emitting diode.

[0756] 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.

[0757] However, the light emitting layer EML emits light of different colors, and the displayed color can be enhanced by passing through a color filter of the same color.

[0758] According to an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0759] The color conversion layer may include quantum dots.

[0760] exist Fig.44 In an embodiment of the present invention, a black light blocking layer that blocks visible light is not formed, and a light blocking region formed by stacking at least two color filters is formed instead of the light blocking layer.

[0761] exist Fig.44 In the embodiment of FIG. 1 , the light blocking region includes a blue color filter 230B, a red color filter 230R, and a green color filter 230G which are sequentially stacked.

[0762] The order of the color filter stacking may vary depending on the embodiment.

[0763] The light blocking region where two or more color filters are overlapped may overlap the sensing electrodes 540 and 541 in a plan view, and may be positioned not to overlap the anode electrode in a plan view.

[0764] This is to ensure that the anode electrode and the light emitting layer EML capable of displaying an image are not blocked by the light blocking region and the sensing electrodes 540 and 541 .

[0765] Reference Fig.44 , in a plan view, the light blocking area of ​​the color filter where three color filters are stacked is positioned only in the area overlapping with the pixel defining layer 380 , and one side of the light blocking area of ​​the color filter is placed inward from the corresponding side of the pixel defining layer 380 .

[0766] Only one color filter may be positioned in an area other than the light blocking area, and light is transmitted through the color filter to form a light transmitting area of ​​the color filter.

[0767] Hereinafter, since light is transmitted through a light transmitting area of ​​a color filter where only one color filter is positioned, the light transmitting area of ​​the color filter is also referred to as a second opening OPCF of a light blocking area.

[0768] The second opening OPCF of the light blocking area is an opening positioned in the light blocking area where two or more color filters are overlapped, and may correspond to an area where only one color filter is positioned.

[0769] The second opening OPCF of the light blocking region of the color filter may correspond to the second opening OPBM of the light blocking layer 220 described above.

[0770] The area of ​​the second opening OPCF in the light blocking region is formed to be larger than the area of ​​the opening OP of the pixel defining layer 380 , and in a plan view, the opening OP of the pixel defining layer 380 may be positioned within the second opening OPCF of the light blocking region.

[0771] In addition, one side of the spacer 385 is located inwardly at a distance g1 from one side of the pixel defining layer 380 , and the spacer 385 is also located inwardly with respect to a corresponding side of the light blocking region.

[0772] As a result, when viewed from the front side of the display panel DP, the spacer 385 may be blocked by the light blocking area and not be visible.

[0773] When external light is incident, it may pass through the second opening OPCF of the light blocking region of the color filter and then be reflected on the sidewall of the opening OP of the pixel defining layer 380 .

[0774] The sidewall of the 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 (like a rainbow).

[0775] Since this color-separated reflected light can be easily seen by the user and deteriorate the display quality, it is not suitable for display applications such as Figure 7 In the embodiment shown in , the second opening OPBM of the light blocking layer 220 is changed to the second opening of the light blocking area of ​​the color filter, and the second opening OPCF of the light blocking area of ​​the color filter can be applied instead of it, which is beneficial to display quality.

[0776] For example, at least one of the second opening OPCF of the light blocking area of ​​the color filter and the opening OP of the pixel defining layer 380 has an elliptical shape, and the direction of the ellipse or the eccentricity of the ellipse is changed to reduce color separation or allow white reflected light to be seen.

[0777] According to the embodiment, it may be formed to have a shape similar to an ellipse or a shape approximate to an ellipse, and its direction or eccentricity may be changed in various ways.

[0778] In addition, various modifications to the aforementioned second opening OPBM of the light blocking layer 220 and the corresponding opening OP of the pixel defining layer 380 may be applied to the second opening OPCF of the light blocking region of the color filter and the opening OP of the pixel defining layer 380 .

[0779] A planarization layer 550 covering the color filters 230R, 230G, 230B is located on the color filters 230R, 230G, 230B.

[0780] The planarization layer 550 is used to planarize the upper surface of the light-emitting display panel DP, and may be a transparent organic insulating film including polyimide, polyamide, acrylic resin, benzocyclobutene, and / or phenolic resin.

[0781] According to an embodiment, a low refractive index layer and an additional planarization layer may be further positioned on the planarization layer 550 to increase the front visibility and light output efficiency of the display panel DP.

[0782] Light may be refracted by the low refractive index layer and the additional planarization layer having a high refractive index property and emitted toward the front side.

[0783] In this case, according to an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be positioned directly on the color filter.

[0784] In this embodiment, a polarizer is not included on top of the planarization layer 550 .

[0785] The polarizer may prevent display quality from being deteriorated when external light visible to a user is incident and reflected by the anode or the sidewall of the opening OP of the pixel defining layer 380 .

[0786] However, the polarizer has a disadvantage of consuming more power to display a certain brightness not only by reducing reflection of external light but also by reducing light emitted from the light emitting layer EML.

[0787] In order to reduce power consumption, the light-emitting display device of this embodiment may not include a polarizer.

[0788] In addition, in this embodiment, the side of the anode is covered by a pixel defining layer 380 to reduce the degree of reflection from the anode, and a light blocking region in which two or more color filters are stacked is also formed to prevent light from entering. It also includes a structure that reduces the degree of display quality degradation and prevents display quality degradation due to reflection.

[0789] Therefore, there is no need to separately form a polarizer on the front side of the light-emitting display panel DP.

[0790] exist Fig.44 In the embodiment of the present invention, the light blocking area where two or more color filters are stacked is concentrated to the embodiment where three color filters are stacked.

[0791] However, according to an embodiment, two color filters may be overlapped to form a light blocking region of the color filter. Fig.45 Shown in.

[0792] Fig.45 is with Figure 6 and Fig.44 Corresponding to the figure, only the color filters 230R, 230G, 230B and Fig.44Therefore, the lower structure of the third sensing insulating layer 511 is different from Fig.44 The lower structure of the third sensing insulation layer 511 is the same.

[0793] In the following, we will mainly describe Fig.44 The upper structure of the third sensing insulating layer 511 is different from the upper structure of the third sensing insulating layer 511 .

[0794] Reference Fig.45 , a light blocking layer that blocks visible light is not formed, and the blue color filter 230B and the red color filter 230R are sequentially stacked to block visible light.

[0795] The order of the color filter stacking may vary depending on the embodiment.

[0796] For example, a light blocking area where two color filters overlap has a blue color filter 230B and a red color filter 230R, and a green color filter 230G overlaps the blue color filter 230B and the red color filter 230R in some areas of the light blocking area of ​​the color filters.

[0797] However, with Fig.44 , which is an embodiment in which the green color filter 230G is not entirely formed in the light blocking region of the color filter and the light blocking region of the color filter is formed using only two color filters.

[0798] In a plan view, the light blocking region where two color filters overlap is positioned only in a region overlapping the pixel defining layer 380 , and one side of the light blocking region of the color filter is positioned inward from a corresponding side of the pixel defining layer 380 .

[0799] In the area except the light blocking area of ​​the color filter, only one color filter may be positioned, and light of the color of the color filter is transmitted to form the light transmitting area of ​​the color filter or the second opening OPCF of the light blocking area.

[0800] The area of ​​the second opening OPCF is formed to be greater than the area of ​​the opening OP of the pixel defining layer 380 , and the opening OP of the pixel defining layer 380 may be positioned within the second opening OPCF in the light blocking region of the color filter.

[0801] In a plan view, the light blocking region of the color filter overlaps the spacer 385 and the plurality of sensing electrodes 540 and 541 except for the pixel defining layer 380 .

[0802] For example, the spacer 385 is disposed inwardly at a distance g1 from a corresponding side of the pixel defining layer 380 , and the spacer 385 is disposed inwardly with respect to a corresponding side of the light blocking region of the color filter.

[0803] In addition, the plurality of sensing electrodes 540 and 541 are covered by the light blocking region of the color filter in a plan view.

[0804] As a result, when viewed from the front side of the display panel DP, the spacer 385 and the plurality of sensing electrodes 540 and 541 are not visible because they are blocked by the light blocking region of the color filter.

[0805] According to an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0806] The color conversion layer may include quantum dots.

[0807] With Fig.45 The embodiment of the cross-sectional structure shown in FIG. Fig.46 and Fig.47 The planar structure shown in .

[0808] First, through Fig.46 The planar structure of each color filter 230R, 230G, 230B is checked.

[0809] Fig.46 is a plan view showing a color filter of a display area according to an embodiment.

[0810] Fig.46 Element (A) of FIG. 1 shows a layer forming the blue color filter 230B, and hatching is drawn at a portion where the blue color filter 230B is located.

[0811] Fig.46 The remaining layers in element (A) are shown as dotted lines.

[0812] based on Fig.46 According to the element (A), the blue color filter 230B is positioned in the light blocking region and the blue light transmitting region through which the blue light is transmitted, but is not formed in the red light transmitting region and the green light transmitting region.

[0813] in addition, Fig.46 Element (B) shows a layer forming the red filter 230R, and hatching is drawn at a portion where the red filter 230R is located.

[0814] Fig.46 The remaining layers in element (B) are shown as dotted lines.

[0815] based on Fig.46 According to the element (B), the red filter 230R is positioned in the light blocking region and the red light transmitting region through which red light is transmitted, but is not formed in the blue light transmitting region and the green light transmitting region.

[0816] Fig.46Element (C) of FIG. 1 shows a layer forming the green filter 230G, and hatching is drawn at a portion where the green filter 230G is located.

[0817] Fig.46 The remaining layers in element (C) are shown as dotted lines.

[0818] based on Fig.46 Element (C), the green filter 230G has an island structure and is positioned only in the green light transmitting region through which green light is transmitted, but not in the light blocking region and the red light transmitting region and the blue light transmitting region.

[0819] The green color filter 230G may overlap some of the light blocking regions of the color filters.

[0820] By making Fig.46 Elements (A), Fig.46 The elements (B) and Fig.46 By superimposing the elements (C) of Fig.47 The planar structure shown in .

[0821] Fig.47 is a plan view of a portion of a display panel according to an embodiment.

[0822] Fig.47 is with Figure 7 The corresponding floor plan. Figure 7 Unlike the embodiment of FIG. 2 , a light blocking region is formed by stacking two or more color filters instead of a light blocking layer, and the green color filter 230G has an island structure.

[0823] Here, the boundary of the green filter 230G is further shown outside the second opening OPCFg of the green filter within the second opening of the filter, so that the green filter 230G has an island structure, and it is clearly shown that the boundary of the green filter 230G partially overlaps the light blocking area of ​​the filter.

[0824] exist Fig.47 , the red filter 230R and the blue filter 230B are both positioned in the light blocking area, but hatching corresponding to the red filter 230R and the blue filter 230B is not shown in the light blocking area. Instead, "230B / 230R" clearly indicates that the light blocking area is where the blue filter 230B and the red filter 230R are positioned.

[0825] under, Fig.48 An examination will determine whether two color filters can be stacked to replace the role of the light blocking layer.

[0826] Fig.48 is a graph showing the transmittance of a color filter according to wavelength.

[0827] exist Fig.48 , which is a graph of the transmittance of each color filter 230R, 230G, 230B against wavelength, so that light within the wavelength range indicated at the high point is transmitted.

[0828] Reference Fig.48 , each of the color filters 230R, 230G, 230B has a transmittance of less than 10% for a portion other than a wavelength band passing therethrough, and when three or two color filters are stacked, it can be confirmed that the wavelength band passing therethrough substantially does not exist.

[0829] Therefore, it can be confirmed that by stacking at least two color filters, Fig.44 By stacking three color filters or Figure 45 to Figure 47 By stacking two color filters, they can both replace the role of the light blocking layer.

[0830] Will pass Fig.49 and Fig.50 The stacked structure of the display area DA and the first assembly area EA1 is examined in more detail.

[0831] Fig.49 and Fig.50 is a cross-sectional view of a light emitting display device according to an embodiment.

[0832] Fig.49 An embodiment including a light blocking layer 220 is shown, and Fig.50 An embodiment is shown in which, instead of the light blocking layer 220 , the light blocking region of the color filter is formed by overlapping the blue color filter 230B and the red color filter 230R.

[0833] First, we will examine in detail Fig.49 Embodiment of the invention.

[0834] The light emitting display device may be mainly divided into a lower panel layer and an upper panel layer, the lower panel layer being where a light emitting diode and a pixel circuit constituting a pixel are located, and may even include an encapsulation layer 400 covering it.

[0835] Here, the pixel circuit part includes the second organic layer 182 and the third organic layer 183 , which refers to structures thereunder, and the light emitting diode is on top of the third organic layer 183 , which may refer to a structure positioned below the encapsulation layer 400 .

[0836] The structure positioned on top of the encapsulation layer 400 may correspond to an upper panel layer.

[0837] Reference Fig.49 , the metal layer BML is positioned on the substrate 110 .

[0838] The substrate 110 may include a material having a rigid property and not being bendable, such as glass, or may include a flexible material that can be bent, such as plastic or polyimide.

[0839] In the case of flexible substrates, such as Fig.49 As shown in , it may have a double-layer structure of polyimide and a barrier layer formed of an inorganic insulating material thereon.

[0840] The metal layer BML may be located at a position overlapping a channel of the driving transistor T1 in the subsequent first semiconductor layer in a plan view, and is also referred to as a lower shielding layer.

[0841] The metal layer BML may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti).

[0842] A buffer layer 111 covering the substrate 110 and the metal layer BML is positioned on the substrate 110 .

[0843] The buffer layer 111 is used to block impurity elements from penetrating into the first semiconductor layer ACT (P-Si), and may include silicon oxide (SiO x ), silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ) and other inorganic insulating layers.

[0844] A first semiconductor layer ACT (P—Si) formed of a silicon semiconductor (eg, a polycrystalline semiconductor (P—Si)) is positioned on the buffer layer 111 .

[0845] The first semiconductor layer ACT (P-Si) includes a channel of a polycrystalline transistor LTPS TFT including a driving transistor, and a first region and a second region positioned on both sides of the channel.

[0846] Here, the polycrystalline transistor LTPS TFT may include not only a driving transistor but also various switching transistors or compensation transistors.

[0847] In addition, the first semiconductor layer ACT (P—Si) has regions on both sides of the channel having conductive layer characteristics by plasma treatment or doping, and can function as a first electrode and a second electrode of the transistor.

[0848] The first gate insulating layer 141 may be located on the first semiconductor layer ACT (P—Si).

[0849] The first gate insulating layer 141 may include silicon oxide (SiO x ), silicon nitride (SiN x) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[0850] A first gate conductive layer including a gate electrode GAT1 of the polycrystalline transistor LTPS TFT may be located on the first gate insulating layer 141 .

[0851] The first gate conductive layer may be formed with a first scan line or an emission control line in addition to the gate electrode GAT1 of the polycrystalline transistor LTPS TFT.

[0852] 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 include a single layer or a multilayer.

[0853] 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.

[0854] The first semiconductor layer ACT (P—Si) blocked by the first gate conductive layer is not conductive, 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.

[0855] The second gate insulating layer 142 may be on the first gate conductive layer and the first gate insulating layer 141 .

[0856] The second gate insulating layer 142 may include silicon oxide (SiO x ), silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[0857] A second gate conductive layer including one electrode GAT2 (Cst) of the storage capacitor Cst and a lower shielding layer GAT2 (BML) of the oxide transistor oxide TFT will be positioned on the second gate insulating layer 142 .

[0858] The lower shielding layer GAT2 (BML) of the oxide transistor oxide TFT is positioned at the bottom of the channel of each oxide transistor oxide TFT, and serves to shield light or electromagnetic interference supplied to the channel from the bottom.

[0859] One electrode GAT2 (Cst) of the storage capacitor Cst overlaps the gate electrode GAT1 of the driving transistor to form the storage capacitor Cst.

[0860] According to an embodiment, the second gate conductive layer may further include a scan line, a control line or a voltage line.

[0861] 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 include a single layer or a multilayer.

[0862] A first interlayer insulating layer 161 may be located on the second gate conductive layer.

[0863] The first interlayer insulating layer 161 may include silicon oxide (SiO x ), silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ) of the inorganic insulating layer, and according to an embodiment, the inorganic insulating material can be formed to be thick.

[0864] An oxide semiconductor layer ACT2 (IGZO) including a channel of an oxide transistor oxide TFT, a first region, and a second region may be positioned on the first interlayer insulating layer 161 .

[0865] The third gate insulating layer 143 may be positioned on the oxide semiconductor layer ACT2 (IGZO).

[0866] 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 .

[0867] The third gate insulating layer 143 may include silicon oxide (SiO x ), silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ) of an inorganic insulating layer.

[0868] A third gate conductive layer including a gate electrode GAT3 of an oxide transistor oxide TFT may be located on the third gate insulating layer 143 .

[0869] A gate electrode GAT3 of the oxide transistor oxide TFT may overlap the channel.

[0870] The third gate conductive layer may further include a scan line or a control line, and may further include a connection electrode connected to the lower shielding layer GAT2 (BML) of the oxide transistor oxide TFT.

[0871] The third gate conductive layer may include a metal or a metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may include a single layer or a multilayer.

[0872] The second interlayer insulating layer 162 may be located on the third gate conductive layer.

[0873] The second interlayer insulating layer 162 may have a single-layer or multi-layer structure.

[0874] According to an embodiment, the second interlayer insulating layer 162 may include silicon oxide (SiO x ), silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ) of inorganic insulating materials, and may include organic materials.

[0875] 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 a first region and a second region of each of the polycrystalline transistor LTPS TFT and the oxide transistor oxide TFT.

[0876] The first data conductive layer SD1 may include a metal such as aluminum (Al), copper (Cu), molybdenum (Mo), titanium (Ti), or a metal alloy, and may include a single layer or a multi-layer.

[0877] The first organic layer 181 may be located on the first data conductive layer SD1 .

[0878] The first organic layer 181 may be an organic insulating layer including an organic material, and the organic material includes polyimide, polyamide, acrylic resin, benzocyclobutene, and / or phenolic resin.

[0879] A second data conductive layer including the anode connection electrode ACM2 may be positioned on the first organic layer 181 .

[0880] The second data conductive layer may include a data line or a driving voltage line.

[0881] 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 include a single layer or a multi-layer.

[0882] The second organic layer 182 and the third organic layer 183 are positioned over the second data conductive layer, and an anode connection opening OP4 is formed in the second organic layer 182 and the third organic layer 183 .

[0883] The anode connection electrode ACM2 is electrically connected to the anode through the anode connection opening OP4.

[0884] The second organic layer 182 and the third organic layer 183 may be organic insulating layers, and may include polyimide, polyamide, acrylic resin, benzocyclobutene, and / or phenolic resin.

[0885] According to an embodiment, the third organic layer 183 may be omitted.

[0886] The pixel defining layer 380 may be located on the anode, cover at least a portion of the anode, and have an opening OP exposing the anode.

[0887] The pixel defining layer 380 may be a black pixel defining layer formed of a black organic material to prevent ambient light from being reflected back, and according to an embodiment, the pixel defining layer 380 may be formed of a transparent organic material.

[0888] Therefore, according to an embodiment, the pixel defining layer 380 may include a negative type black organic material and a black pigment.

[0889] The spacer 385 is positioned on the pixel defining layer 380 .

[0890] The spacer 385 may include a first portion 385 - 1 in a tall and narrow region and a second portion 385 - 2 in a short and wide region.

[0891] Unlike the pixel defining layer 380 , the spacer 385 may be formed of a transparent organic insulating material.

[0892] According to an embodiment, the spacer 385 may be formed of a positive type transparent organic material.

[0893] The functional layer FL and the cathode are sequentially disposed on the anode, the spacer 385, and the pixel defining layer 380, and are sequentially formed in the display area DA and the first assembly area EA1. The functional layer FL and the cathode may be positioned in all areas.

[0894] The light emitting layer EML is positioned between the functional layers FL, and the light emitting layer EML may be positioned only within the opening OP of the pixel defining layer 380 .

[0895] Hereinafter, the functional layer FL and the light emitting layer EML may be combined to refer to an intermediate layer.

[0896] The functional layer FL may include at least one of auxiliary layers such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer, and the hole injection layer and the hole transport layer may be positioned below the light-emitting layer EML, and the electron transport layer and the electron injection layer may be positioned on top of the light-emitting layer EML.

[0897] The encapsulation layer 400 is positioned on the cathode.

[0898] 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.

[0899] The encapsulation layer 400 may protect the light emitting layer EML from ambient moisture or oxygen that may enter.

[0900] According to an embodiment, encapsulation layer 400 may include a structure in which an inorganic layer and an organic layer are further sequentially stacked.

[0901] Sensing insulation layers 501 , 510 , 511 and a plurality of sensing electrodes 540 , 541 are located on the encapsulation layer 400 for touch detection.

[0902] exist Fig.49 In the embodiment of FIG. 5 , two sensing electrodes 540 and 541 may be used to detect touch in a capacitive manner.

[0903] For example, a first sensing insulating layer 501 is disposed on the encapsulation layer 400 , and a plurality of sensing electrodes 540 and 541 are formed on the first sensing insulating layer 501 .

[0904] 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 positioned in the second sensing insulating layer 510 .

[0905] 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 a multilayer.

[0906] The third sensing insulating layer 511 is disposed on the sensing electrode 540 .

[0907] The light blocking layer 220 and the color filter 230 are located on the third sensing insulating layer 511 .

[0908] In a plan view, the light blocking layer 220 may overlap the sensing electrodes 540 and 541 .

[0909] The light blocking layer 220 has a second opening OPBM, and the second opening OPBM of the light blocking layer 220 overlaps the opening OP of the pixel defining layer 380 in a plan view.

[0910] In addition, the second opening OPBM of the light blocking layer 220 may be formed to be wider than the opening OP of the pixel defining layer 380 .

[0911] As a result, the anode electrode overlapped with the opening OP of the pixel defining layer 380 (ie, exposed through the opening OP of the pixel defining layer 380 ) may also have a structure that is not blocked by the light blocking layer 220 in a plan view.

[0912] This is to ensure that the anode electrode and the light emitting layer EML capable of displaying an image are not blocked by the light blocking layer 220 and the sensing electrodes 540 and 541 .

[0913] In addition, the light blocking layer 220 has a structure overlapping the anode connection opening OP4 in a plan view but not overlapping the opening OP3 of the first organic layer 181 in a plan view.

[0914] The color filter 230 is located on the sensing insulation layers 501 , 510 , 511 and the light blocking layer 220 .

[0915] According to an embodiment, the color filter 230 may be replaced with a color conversion layer, or may further include a color conversion layer.

[0916] The color conversion layer may include quantum dots.

[0917] The planarization layer 550 may be located on the color filter 230 to cover the color filter 230. According to an embodiment, the planarization layer 550 may increase the front visibility and light output efficiency of the display device, and a low refractive index layer and an additional planarization layer may be further located on top of the planarization layer 550.

[0918] Light may be refracted and emitted toward the front side through the low refractive index layer and the additional planarization layer having a high refractive index property.

[0919] In this case, according to an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be positioned directly on the color filter 230 .

[0920] In this embodiment, a polarizer is not included on top of the planarization layer 550 .

[0921] 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.

[0922] However, in this embodiment, the side of the anode is covered by a pixel defining layer 380 to reduce the degree of reflection from the anode, and a light blocking layer 220 is also formed to reduce the degree of incident light, thereby reducing the amount of light incident on the anode, and it already includes a structure to prevent display quality degradation.

[0923] Therefore, there is no need to separately form a polarizer on the front side of the display panel DP.

[0924] In addition to the stacked structure of the display area DA, Fig.49 Also shown is a cross-sectional structure of a first assembly area EA1 formed to allow light to penetrate a portion of the display area DA.

[0925] exist Fig.49 In the embodiment, 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).

[0926] Here, the first optical sensor region OPS1 is a region formed so that light can penetrate, wherein the additional openings OP- 1 , OPBM- 1 are positioned on a flat plane so as not to overlap the pixel defining layer 380 and the light blocking layer 220 .

[0927] In contrast, the second optical sensor region OPS2 is a region formed to overlap the pixel defining layer 380 and the light blocking layer 220 in a plan view so that light is not transmitted therethrough.

[0928] 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 such as a metal layer or a semiconductor layer that blocks light.

[0929] For reference, the first optical element (ES1; see Figure 2 ) is positioned on the back 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 positioned in the first assembly area EA1.

[0930] For example, the stacked structure of the first element area EA1 is as follows.

[0931] 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 on the buffer layer 111 .

[0932] In addition, 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 .

[0933] A first organic layer 181 , a second organic layer 182 , and a third organic layer 183 , which are organic insulating layers, are sequentially stacked on the second interlayer insulating layer 162 .

[0934] The functional layer FL may be positioned on the third organic layer 183 , and the cathode may be positioned on the third organic layer 183 .

[0935] The encapsulation layer 400 is positioned on the cathode, and the sensing insulating layers 501 , 510 , and 511 are sequentially located on top of the cathode.

[0936] 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.

[0937] In addition, the sensing insulating layers 501 , 510 , and 511 may all be inorganic insulating layers.

[0938] The planarization layer 550 may be located on the sensing insulation layers 501 , 510 , and 511 .

[0939] As described above, the metal layer, the first semiconductor layer, the first gate conductive layer, the second gate conductive layer, the oxide semiconductor layer, the third gate conductive layer, the first and second data conductive layers, and the anode are not positioned in the first component area EA1.

[0940] In addition, the light emitting layer EML and the sensing electrodes 540 and 541 are not formed.

[0941] In addition, in the first optical sensor region OPS1 of the first assembly area EA1, additional openings OP-1, OPBM-1 are formed in the pixel defining layer 380 and the light blocking layer 220, respectively, so that the pixel defining layer 380 and the light blocking layer 220 are not formed.

[0942] As a result, light may pass through the first optical sensor area OPS1.

[0943] On the other hand, within the first assembly area EA1, the second optical sensor area OPS2 may not have the additional openings OP-1, OPBM-1 present, thereby allowing it to have a structure in which light is not transmitted by overlapping the pixel defining layer 380 and the light blocking layer 220.

[0944] In the above, the embodiment in which three organic layers in total are formed and the anode connection opening is formed in the second organic layer and the third organic layer is examined.

[0945] However, at least two organic layers may be formed, and in this case, the anode connection opening may be positioned in an upper organic layer positioned away from the substrate, and the lower organic layer opening may be positioned in the lower organic layer.

[0946] Below, refer to Fig.50 , an embodiment in which a light blocking region of a color filter is formed by overlapping a blue color filter 230B and a red color filter 230R instead of the light blocking layer 220 will be described.

[0947] exist Fig.50 In the embodiment, the third sensing insulating layer 511 and the structure thereunder are Fig.49 The structure is the same as in , so the following only examines the differences in detail. Fig.49 Different upper structures of the third sensing insulation layer 511 .

[0948] The color filters 230R, 230G, 230B are positioned on the third sensing insulation layer 511 .

[0949] exist Fig.50 In the embodiment of FIG. 5 , the light blocking layer is not included. Instead, the role of the light blocking layer is performed by the stacked color filters 230R, 230B that may be stacked with the sensing electrodes 540, 541 in a plan view.

[0950] The stacked color filters 230R, 230B have second openings OPCF, and the second openings OPCF of the stacked color filters 230R, 230B overlap with the openings OP of the pixel defining layer 380 in a plan view.

[0951] In addition, the second opening OPCF of the stacked color filters 230R, 230B may be wider than the opening OP of the pixel defining layer 380 .

[0952] As a result, the anode overlapping with the opening OP of the pixel defining layer 380 (i.e., exposed by the opening OP of the pixel defining layer 380) also has a structure that does not overlap with the color filters 230R, 230B in a plan view, and thus can have a structure that is not blocked in a plan view.

[0953] This is to ensure that the anode electrode and the light emitting layer EML capable of displaying an image are not blocked by the stacked color filters 230R, 230B and the sensing electrodes 540 and 541 .

[0954] In addition, the stacked color filters 230R, 230B have a structure overlapping the anode connection opening OP4 in a plan view.

[0955] A color filter may be positioned within the second opening OPCF of the stacked color filters 230R, 230B, and Fig.50 In FIG. 2 , the green filter 230G is positioned in the second opening OPCF.

[0956] According to an embodiment, the color filters 230R, 230G, 230B may be replaced with a color conversion layer, or may further include a color conversion layer.

[0957] The color conversion layer may include quantum dots.

[0958] A planarization layer 550 covering the color filters 230R, 230G, 230B is located on the color filters 230R, 230G, 230B, and a low refractive index layer and an additional planarization layer may be further positioned on top of the planarization layer 550 to increase front visibility and luminous efficiency of the display device.

[0959] According to an embodiment, the planarization layer 550 may be omitted, and the low refractive index layer and the additional planarization layer may be positioned directly on the color filter.

[0960] exist Fig.50 In an embodiment, the polarizer is not included on top of the planarization layer 550.

[0961] 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.

[0962] However, in this embodiment, the side of the anode is covered with a pixel defining layer 380 to reduce the degree of reflection from the anode, and the stacked color filters 230R, 230B are also formed to reduce the degree of incident light. In short, it prevents the degradation of display quality due to reflection.

[0963] Therefore, there is no need to separately form a polarizer on the front side of the display panel DP.

[0964] according to Fig.50 The cross-sectional structure of the first assembly area EA1 of the embodiment may be as follows.

[0965] The first assembly area EA1 is divided into a first optical sensor area OPS1 and a second optical sensor area OPS2.

[0966] Here, the first optical sensor area OPS1 has additional openings OP-1, OPCF-1 positioned so that they do not overlap the pixel defining layer 380 and a light blocking area of ​​a color filter formed by overlapping at least two color filters in a plan view.

[0967] In contrast, the second optical sensor region OPS2 is a region formed to prevent light transmission by overlapping the pixel defining layer 380 with a light blocking region of a color filter formed by overlapping at least two color filters in a plan view.

[0968] 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 such as a metal layer or a semiconductor layer that blocks light.

[0969] For reference, the first optical element (ES1; see Figure 2 ) is positioned on the back 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 positioned in the first assembly area EA1.

[0970] For example, the stacked structure of the first element area EA1 is as follows.

[0971] A buffer layer 111 as an inorganic insulating layer is located on the substrate 110 , and a first gate insulating layer 141 and a second gate insulating layer 142 as inorganic insulating layers are sequentially located on the buffer layer 111 .

[0972] In addition, 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 .

[0973] A first organic layer 181 , a second organic layer 182 , and a third organic layer 183 , which are organic insulating layers, are sequentially stacked on the second interlayer insulating layer 162 .

[0974] The functional layer FL may be positioned on the third organic layer 183 , and the cathode may be positioned on the third organic layer 183 .

[0975] The encapsulation layer 400 is located on the cathode, and sensing insulating layers 501 , 510 , and 511 are sequentially located on top of the cathode.

[0976] 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.

[0977] In addition, the sensing insulating layers 501 , 510 , and 511 may all be inorganic insulating layers.

[0978] The planarization layer 550 may be located on the sensing insulation layers 501 , 510 , and 511 .

[0979] The first element area EA1 as described above does not include 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.

[0980] In addition, the light emitting layer EML and the sensing electrodes 540 and 541 are not formed.

[0981] In addition, in the first optical sensor region OPS1 of the first assembly area EA1, additional openings OP-1, OPCF-1 are formed in light blocking regions of the pixel defining layer 380 and the color filter, respectively, which may not form the pixel defining layer 380 and the color filter.

[0982] As a result, light may pass through the first optical sensor area OPS1.

[0983] On the other hand, the second optical sensor area OPS2 of the first component area EA1 does not have the additional openings OP-1, OPCF-1 and overlaps the light blocking area of ​​the color filter for transmitting light and the pixel defining layer 380, and may have an opaque structure.

[0984] In the above, the embodiment in which a total of three organic layers are formed and the anode connection opening is formed in the second organic layer and the third organic layer is examined.

[0985] However, two organic layers may be formed, and in this case, the anode connection opening may be positioned in the upper organic layer away from the substrate, and the lower organic layer opening may be positioned in the lower organic layer.

[0986] In addition, if the opening OP of the pixel defining layer 380, the second opening OPBM of the light blocking layer 220, and the second opening OPCF of the light blocking region where two or more color filters are overlapped have an elliptical or similar structure, modifications as shown in the following Table 3 may be made.

[0987]

Table 3

[0988]

[0989] Although the embodiments have been described in detail above, the scope of the present invention is not necessarily limited thereto, and those skilled in the art can make various modifications using the basic concept of the present disclosure.

Claims

1. A light-emitting display device, comprising: substrate; A plurality of anodes are disposed on the substrate; a pixel defining layer having a plurality of first openings respectively overlapping the plurality of anodes; A plurality of light-emitting layers are respectively disposed in the plurality of first openings of the pixel defining layer; a cathode disposed on both the plurality of light-emitting layers and the pixel defining layer; An encapsulation layer, disposed on the cathode; as well as a light blocking layer disposed on the encapsulation layer and comprising a plurality of second openings respectively overlapping the plurality of first openings, and A unit pixel consists of four light-emitting areas. The four light-emitting areas include two light-emitting areas of a first color, one light-emitting area of ​​a second color, and one light-emitting area of ​​a third color. wherein the light emitting areas of the first color are arranged in a rhombus shape, and the light emitting areas of the second color and the light emitting areas of the third color are arranged in a rectangular shape, and Wherein, at least one first opening among the plurality of first openings of the pixel defining layer and / or at least one second opening among the plurality of second openings of the light blocking layer has an elliptical shape.

2. The light emitting display device according to claim 1, wherein: The elliptical shape includes four or more major axis angles, and Angles formed by major axes of the elliptical shapes are arranged at intervals of 45 degrees or less.

3. The light-emitting display device according to claim 1, wherein: The elliptical shape has an eccentricity in the range from 0.2 to 0.

85.

4. The light emitting display device according to claim 1, wherein: The first opening and the second opening overlapped with the first opening have a horizontal gap in a range of greater than 0 μm and less than or equal to 20 μm.

5. The light emitting display device according to claim 1, wherein: The elliptical shape has a flat shape merging at least two elliptical shapes having different plane eccentricities.

6. The light emitting display device according to claim 5, wherein: The elliptical shape has a plane 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 combining them.

7. The light emitting display device according to claim 1, wherein: The first opening of the pixel defining layer and the second opening of the light blocking layer each have an elliptical shape.

8. The light emitting display device according to claim 1, wherein: One of the first opening of the pixel defining layer and the second opening of the light blocking layer has a circular shape, and the other has an elliptical shape.

9. The light emitting display device according to claim 8, wherein: The first opening has a circular shape, and the second opening has an elliptical shape, and The first opening and the second opening are in contact with each other.

10. The light-emitting display device according to claim 1, further comprising: A plurality of color filters fill the plurality of second openings respectively.

11. A light-emitting display device, comprising: substrate; A plurality of anodes are disposed on the substrate; a pixel defining layer having a plurality of first openings respectively overlapping the plurality of anodes; A plurality of light-emitting layers are respectively disposed in the plurality of first openings of the pixel defining layer; a cathode disposed on both the plurality of light-emitting layers and the pixel defining layer; An encapsulation layer, disposed on the cathode; as well as A plurality of color filters corresponding to different colors and arranged on the encapsulation layer, wherein the plurality of color filters include a plurality of second openings, in each of the plurality of second openings, only one color filter of the plurality of color filters is disposed, and at least two color filters of the plurality of color filters are overlapped in the light blocking region of the color filters, Among them, a unit pixel includes four light-emitting areas. The four light-emitting areas include two light-emitting areas of the first color, one light-emitting area of ​​the second color, and one light-emitting area of ​​the third color among the three-color light-emitting areas. wherein the light emitting areas of the first color are arranged in a rhombus shape, and the light emitting areas of the second color and the light emitting areas of the third color are arranged in a rectangular shape, and Wherein, at least one first opening among the plurality of first openings of the pixel defining layer and / or at least one second opening among the plurality of second openings of the color filter has an elliptical shape.

12. The light emitting display device according to claim 11, wherein: The elliptical shape includes four or more major axis angles, and Angles formed by major axes of the elliptical shapes are arranged at intervals of 45 degrees or less.

13. The light emitting display device according to claim 11, wherein: The elliptical shape has an eccentricity in the range of 0.2 to 0.

85.

14. The light emitting display device according to claim 11, wherein: The first opening and the second opening overlapped with the first opening have a horizontal gap in a range of greater than 0 μm and less than or equal to 20 μm.

15. The light emitting display device according to claim 11, wherein: The elliptical shape has a flat shape merging at least two elliptical shapes having different plane eccentricities.

16. The light emitting display device according to claim 15, wherein: The elliptical shape has a plane 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 combining them.

17. The light emitting display device according to claim 11, wherein: In the light blocking region of the color filter, a blue color filter and a red color filter are overlapped, and Each of the plurality of second openings overlaps one of the blue color filter, the red color filter, and the green color filter.

18. The light emitting display device according to claim 11, wherein: Both the first opening of the pixel defining layer and the second opening of the color filter have an elliptical shape.

19. The light emitting display device according to claim 11, wherein: One of the first opening of the pixel defining layer and the second opening of the color filter has a circular shape, and the other has an elliptical shape.

20. The light emitting display device according to claim 19, wherein: The first opening has a circular shape, and the second opening has an elliptical shape, and The first opening and the second opening are in contact with each other.

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