Light emitting display device and electronic device

Abstract

This invention discloses a light-emitting display device and an electronic device. According to an embodiment, the light-emitting display device includes a display area repeatedly provided with a plurality of repeating unit pixels. Each repeating unit pixel includes a plurality of minimum unit pixels, each minimum unit pixel including at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel. The green, red, and blue sub-pixels correspond to a first opening provided in a pixel-defining layer and a second opening provided above the first opening while corresponding to it. At least one of the first and second openings has an elliptical shape in planar shape, and the repeating unit pixels are formed by minimum unit pixels provided in a 2×2 array.

Description

Technical Field

[0001] Embodiments of this disclosure relate to light-emitting display devices and electronic devices. Background Technology

[0002] A display device is a device for displaying images (e.g., still images and / or moving images), and may include liquid crystal displays (LCDs) and / or organic light-emitting diode (OLED) display devices. Such display devices are used in a variety of suitable electronic devices such as mobile phones, navigation devices, digital cameras, e-books, portable gaming devices, and / or various suitable terminals.

[0003] Display devices, such as OLED display devices, can use flexible substrates and therefore can have a bendable and / or foldable structure.

[0004] In addition, in small electronic devices such as mobile phones, optical elements such as cameras and / or optical sensors can be formed in a bezel area around the display area (e.g., surrounding the display area). However, as the size of the displayed image becomes larger and the size of the peripheral area of ​​the display device is reduced, technologies that can place cameras and / or optical sensors on the back of the display area are being investigated. Summary of the Invention

[0005] Embodiments of this disclosure aim to reduce diffraction patterns that occur when external light is reflected. Embodiments provide a light-emitting display device that is formed to prevent color spots due to the reflection of external light or phenomena where the reflectivity of external light varies depending on the angle (e.g., the angle relative to the light source).

[0006] Embodiments of this disclosure provide a light-emitting display device in which a black light-shielding layer is present in front of a display panel or multiple color filters overlap without including the light-shielding layer to prevent or reduce the reflection and / or transmission of external light, thereby reducing the appearance of color spots or reducing the reflectivity difference according to the angle of external light (e.g., the angle of incidence of external light).

[0007] The light-emitting display device according to an embodiment includes a display area that repeatedly provides or forms a plurality of repeating unit pixels. The repeating unit pixels include a plurality of minimum unit pixels. Each of the plurality of minimum unit pixels includes at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel. The at least one green sub-pixel, at least one red sub-pixel, and at least one blue sub-pixel correspond to a first opening provided in a pixel defining layer and a second opening provided above the first opening while corresponding to the first opening. At least one selected from the first opening and the second opening has an elliptical shape (e.g., a generally elliptical shape) in planar shape (e.g., in a plan view). Each of the plurality of repeating unit pixels is formed by minimum unit pixels provided in a 2×2 array.

[0008] Each of the smallest unit pixels can be formed by four green sub-pixels in the green sub-pixels (e.g., at least one green sub-pixel includes four green sub-pixels), two red sub-pixels in the red sub-pixels (e.g., at least one red sub-pixel includes two red sub-pixels), and two blue sub-pixels in the blue sub-pixels (e.g., at least one blue sub-pixel includes two blue sub-pixels).

[0009] The first square can be formed by connecting four green sub-pixels with horizontal and vertical lines (e.g., by connecting four adjacent green sub-pixels with horizontal and vertical lines, such that the four green sub-pixels are located at each vertex of the first square), and the second square can be formed by connecting two red sub-pixels and two blue sub-pixels with horizontal and vertical lines (e.g., by connecting two adjacent red sub-pixels and two adjacent blue sub-pixels with horizontal and vertical lines, such that the two red sub-pixels and two blue sub-pixels are located at each vertex of the second square).

[0010] At least one red subpixel or at least one blue subpixel may be provided at the center of a first square formed by four green subpixels, and a green subpixel may be provided at the center of a second square formed by two red subpixels and two blue subpixels.

[0011] The first and second openings, each corresponding to at least one green sub-pixel, at least one red sub-pixel, and at least one blue sub-pixel, may have an elliptical shape (e.g., approximately elliptical) in planar shape (e.g., in a planar view), and the major axis direction of the second opening may have an angular difference of 45 × n degrees (where n is a natural number greater than or equal to 1 and less than or equal to 8) from the major axis direction of an adjacent second opening of the same color.

[0012] In a repeating unit pixel, the second opening corresponding to the red sub-pixel and the second opening corresponding to the blue sub-pixel can have a 90-degree angle difference along the major axis and can be alternately provided along a single diagonal direction.

[0013] In the repeating unit pixel, the major axis direction of the second opening corresponding to at least one red sub-pixel and the second opening corresponding to at least one blue sub-pixel can be provided alternately along a single diagonal direction in directions of 0 degrees and 90 degrees and 45 degrees and 135 degrees.

[0014] In the repeating unit pixel, in the second opening corresponding to at least one green sub-pixel, the second opening having a 90-degree difference in the long axis direction can be alternately provided in the horizontal or vertical direction.

[0015] In the repeating unit pixel, the long axis direction angle of the second opening corresponding to at least one green sub-pixel can be provided alternately in the horizontal or vertical direction at 0 degrees and 90 degrees and 45 degrees and 135 degrees.

[0016] The smallest unit pixel can be formed by a green sub-pixel, a red sub-pixel, and a blue sub-pixel.

[0017] A triangle can be formed by connecting a green subpixel, a red subpixel, and a blue subpixel with straight lines (for example, three straight lines).

[0018] The first and second openings, each corresponding to at least one green sub-pixel, at least one red sub-pixel, and at least one blue sub-pixel, may have an elliptical shape (e.g., approximately elliptical) in planar shape (e.g., in a planar view), and the major axis direction of the second opening may have an angular difference of 45 × n degrees (where n is a natural number greater than or equal to 1 and less than or equal to 8) from the major axis direction of an adjacent second opening of the same color.

[0019] In the repeating unit pixel, the second opening having a 90-degree difference in the long axis direction can be alternately provided in the second opening corresponding to at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel, and the second opening can be provided in the horizontal or vertical direction.

[0020] In the repeating unit pixel, the long axis direction angle of the second opening corresponding to at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel can be alternately provided in the horizontal or vertical direction at 0 degrees and 90 degrees and 45 degrees and 135 degrees.

[0021] At least one of the first opening and the second opening may have a circular shape (e.g., approximately circular shape) in planar shape (e.g., in a plan view).

[0022] The second opening can be located in a light-shielding layer provided above the pixel-defining layer, or in the light-shielding area of ​​an overlapping color filter.

[0023] An electronic device according to an embodiment includes a light-emitting display device, wherein the light-emitting display device includes a display area repeatedly provided with a plurality of repeating unit pixels, the repeating unit pixels including a plurality of minimum unit pixels, the minimum unit pixels including at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel, the at least one green sub-pixel, at least one red sub-pixel and at least one blue sub-pixel may correspond to a first opening provided in a pixel defining layer and a second opening provided above the first opening while corresponding to the first opening, at least one selected from the first opening and the second opening may have an elliptical shape (e.g., a generally elliptical shape) in planar shape (e.g., in a plan view), and the repeating unit pixels may be formed by minimum unit pixels provided in a 2×2 array.

[0024] The smallest unit pixel can be composed of four green sub-pixels in the green sub-pixels (e.g., at least one green sub-pixel includes four green sub-pixels), two red sub-pixels in the red sub-pixels (e.g., at least one red sub-pixel includes two red sub-pixels), and two blue sub-pixels in the blue sub-pixels (e.g., at least one green sub-pixel includes two blue sub-pixels).

[0025] The first square is formed by connecting four green sub-pixels with horizontal and vertical lines (e.g., by connecting four adjacent green sub-pixels with horizontal and vertical lines, such that the four green sub-pixels are located at each vertex of the first square), and the second square is formed by connecting two red sub-pixels and two blue sub-pixels with horizontal and vertical lines (e.g., by connecting two adjacent red sub-pixels and two adjacent blue sub-pixels with horizontal and vertical lines, such that the two red sub-pixels and two blue sub-pixels are located at each vertex of the second square).

[0026] At least one red subpixel or at least one blue subpixel may be provided at the center of a first square formed by four green subpixels, and a green subpixel may be provided at the center of a second square formed by two red subpixels and two blue subpixels.

[0027] According to an embodiment, instead of a polarizing plate, a black pixel defining layer can be used to separate the light-emitting layers from each other, thereby reducing the ratio (or amount) of reflected external light and reducing color spots caused by external light. According to an embodiment, the number of the smallest unit pixels included in the repeating unit pixels provided repeatedly in the display area can be reduced to, for example, a 2×2 array to reduce color spots caused by external light. According to an embodiment, even if the number of the smallest unit pixels included in the repeating unit pixels provided repeatedly in the display area is relatively large, for example, a 4×4 array, the difference in the reflectivity values ​​of external light based on the angle (e.g., the angle of incidence of external light) can be approximated within a set or specific range, such that the difference in reflectivity of external light is not perceptible to the user.

[0028] According to the embodiment, since no polarizing plate is used, the brightness is not reduced when passing through the polarizing plate, and therefore the maximum brightness value of the light-emitting display device is formed to be greater than 2500 nits, thereby providing a light-emitting display device that emits light. Attached Figure Description

[0029] The accompanying drawings, together with the specification, illustrate embodiments of the subject matter of this disclosure, and together with the specification, serve to illustrate the principles of the embodiments of the subject matter of this disclosure.

[0030] Figure 1 This is a schematic perspective view of the use state of the display device according to an embodiment.

[0031] Figure 2 This is an exploded perspective view of a display device according to an embodiment.

[0032] Figure 3 This is a block diagram of a display device according to an embodiment.

[0033] Figure 4 This is a schematic perspective view of a light-emitting display device according to another embodiment.

[0034] Figure 5 This is a top plan view of an enlarged view of a region of a light-emitting display device according to an embodiment.

[0035] Figure 6 This is a schematic cross-sectional view of the display panel according to an embodiment.

[0036] Figure 7 and Figure 8 This provides a top plan view of the smallest unit pixel in the display panel according to an embodiment.

[0037] Figures 9 to 17 The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0038] Figure 18 This is a table summarizing the characteristics of reflected light from some embodiments.

[0039] Figure 19 The principal axis direction angle of the second opening of the light-shielding layer corresponding to the red sub-pixel of the first repeating unit pixel provided in the display panel according to the embodiment is shown.

[0040] Figures 20A to 20C The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0041] Figures 21 to 26 This shows the repeating unit pixels provided in the display panel.

[0042] Figure 27 This is a table summarizing the characteristics of reflected light from some embodiments.

[0043] Figure 28 The principal axis direction angle of the second opening of the light-shielding layer corresponding to a sub-pixel of a second repeating unit pixel in the display panel according to the embodiment is shown.

[0044] Figure 29 The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0045] Figures 30 to 35 Features of a display panel according to an embodiment are shown.

[0046] Figure 36 and Figure 37 This is a schematic cross-sectional view of the display panel according to an embodiment.

[0047] Figure 38 It is a graph showing the transmittance according to the wavelength of the color filter.

[0048] Figure 39 and Figure 40 This is a cross-sectional view of a light-emitting display device according to an embodiment. <Explanation of Figure Markers> 220: Light-blocking layer; 380: Pixel limiting layer OP, OPr, OPg, OPb: Openings of the pixel-limiting layer OPBM, OPBMr, OPBMg, OPBMb: The second opening of the light-shielding layer 230R, 230G, 230B: Color filters OPCF: Second opening of the color filter Anode: Anode; Cathode: Cathode EML: Emissive Layer; FL: Functional Layer 1000: Display device; DP: Display panel 110: Substrate; 180, 181, 182, 183: Organic layers 141, 142, 143: Grid insulation layer 161, 162: Interlayer insulation layer 385, 385-1, 385-2: Spacers 400, 401, 402, 403: Encapsulation layer 501, 510, 511: Sensing Insulation Layer 540, 541: Sensing electrodes 550: Planarization layer; DA, DA1-1, DA1-2: Display area EA, EA1, EA2: Component Areas Detailed Implementation

[0049] In the following description, embodiments of the present disclosure are illustrated with reference to the accompanying drawings, enabling those skilled in the art to readily practice the subject matter of the disclosure. As will be appreciated by those skilled in the art, the described embodiments can be modified in various suitable ways without departing entirely from the spirit or scope of the present disclosure.

[0050] In order to clearly describe the subject matter of this disclosure, certain parts that are not related to the description may be omitted, and throughout the specification, the same reference numerals are used for the same or similar parts.

[0051] In the embodiments, for better understanding and ease of description, the dimensions and thicknesses of each component shown in the drawings may be arbitrarily depicted, and therefore, this disclosure is not necessarily limited to those shown. In the drawings, the thicknesses of layers, films, panels, and regions, etc., may be exaggerated for clarity. In the embodiments, the thicknesses of some layers and regions may be exaggerated in the drawings for better understanding and ease of description.

[0052] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it may be directly on that other element, or an intervening element may be present therein. Conversely, when an element is referred to as being "directly on" another element, no intervening element is present. Furthermore, throughout the specification, the phrase "on" the target element will be understood as being above or below the target element, and will not necessarily be understood as being "on the upper side" based on a direction opposite to the direction of gravity.

[0053] In embodiments, unless explicitly described to mean the opposite, the words “comprising,” “including,” and variations thereof will be understood to imply inclusion of the stated elements but not exclusion of any other elements.

[0054] Furthermore, throughout the instruction manual, the phrases “planar,” “planar shape,” “on a plane,” or “in a planar view” refer to the target portion viewed from above, and the phrase “in a cross section” refers to the cross section formed by vertically cutting the target portion viewed from the side.

[0055] In the embodiments, when “connected to” is mentioned throughout the specification, it means not only that two or more components are directly connected, but also that two or more components are indirectly connected, physically connected, and electrically connected through other components, or that while being an integral unit, they are referred to by different names depending on their location or function.

[0056] In the embodiments, throughout the specification, when a portion such as wiring, layer, film, area, plate, or component is described as “extending in a first direction or a second direction,” this means not only a straight line shape extending in that direction, but also a structure that generally extends along the first or second direction, and also includes structures that extend while being bent at some portions, having a zigzag structure, or including a curved structure.

[0057] In the embodiments, electronic devices including display devices and / or display panels as described in the specification (e.g., mobile phones, TVs, monitors and / or laptops, etc.) or electronic devices including display devices and display panels manufactured by the manufacturing methods described in the specification are not excluded from the scope of the claims.

[0058] In the following text, reference will be made to Figures 1 to 3 Describe the structure of the schematic display device.

[0059] Figure 1 This is a schematic perspective view of the display device in use according to an embodiment. Figure 2 This is an exploded perspective view of the display device according to an embodiment, and Figure 3 This is a block diagram of a display device according to an embodiment.

[0060] refer to Figure 1The display device 1000 according to an embodiment is a device for displaying moving images (e.g., motion pictures) and / or still images, and can be used as a display screen for various suitable products such as portable electronic devices (e.g., mobile phones, smartphones, tablet PCs, laptops, mobile communication terminals, e-notebooks, e-readers, portable multimedia players (PMPs), navigation devices, and / or ultra-mobile PCs (UMPCs), etc.), televisions, monitors, signs, and / or Internet of Things (IoT) devices. In an embodiment, the display device 1000 according to an embodiment can be used in wearable devices such as smartwatches, watch phones, glasses-type displays, and head-mounted displays (HMDs). In an embodiment, the display device 1000 according to an embodiment can be used as a vehicle's instrument panel, a central information display (CID) on a vehicle's central instrument panel and / or dashboard, an interior mirror display replacing a vehicle's side mirrors, and a display on the back of the front seats serving as entertainment for the rear seats. For better understanding and ease of description, Figure 1 The display device 1000 is shown as a smartphone, but this disclosure is not limited thereto.

[0061] The display device 1000 can display an image on a display plane parallel (e.g., substantially parallel) to the first direction DR1 and the second direction DR2, facing a third direction DR3. The display plane for displaying the image may correspond to the front surface of the display device 1000 and may correspond to the front surface of the cover window WU. The image may include moving images and / or static images.

[0062] In this embodiment, the front (or upper) and rear (or lower) surfaces of each component are defined with reference to the orientation of the displayed image. The front and rear surfaces are opposite to each other on a third-direction DR3, and the normal direction of each of the front and rear surfaces may be parallel (e.g., substantially parallel) to the third-direction DR3. The distance between the front and rear surfaces on the third-direction DR3 may correspond to the thickness of the display panel on the third-direction DR3.

[0063] The display device 1000 according to the embodiment can detect user input applied from the outside (see reference). Figure 1 (The user's input can include various suitable types or kinds of external input, such as a part of the user's body, light, heat, and / or pressure. In an embodiment, the user's input is illustrated as the user's hand being applied to the front surface. However, this disclosure is not limited thereto. The user's input can be provided in various suitable forms, and depending on the structure of the display device 1000, the display device 1000 can also detect user input applied to the side or rear surface of the display device 1000.)

[0064] refer to Figure 1 and Figure 2 The display device 1000 may include a cover window WU, a housing HM, a display panel DP, and optical elements ES. In an embodiment, the cover window WU and the housing HM may be combined to form the appearance of the display device 1000.

[0065] Cover window WU may include an insulating panel (e.g., an electrically insulating panel). For example, cover window WU may be formed of glass, plastic (e.g., polymer), or a combination thereof.

[0066] The front surface of the cover window WU can define the front surface of the display device 1000. The transmissive region TA can be an optically transparent region. For example, the transmissive region TA can be a region with a visible light transmittance of approximately 90% or more.

[0067] The blocking region BA may define the shape of the transmitting region TA. The blocking region BA may be adjacent to the transmitting region TA and may surround (e.g., encircle) the transmitting region TA. The blocking region BA may be a region with relatively low light transmittance compared to the transmitting region TA. The blocking region BA may include an opaque material that blocks or reduces the transmission of light. The blocking region BA may have a set or predetermined color. The blocking region BA may be defined by a border layer provided separately from the transparent substrate defining the transmitting region TA, or it may be defined by an ink layer formed by inserting and / or coloring on the transparent substrate.

[0068] The display panel DP may include display pixels (or pixels) PX for displaying images and a driver 50, and the display pixels PX are provided in the display area DA and the component area EA. The display panel DP may include a front surface that includes the display area DA and a non-display area PA. In an embodiment, the display area DA and the component area EA are areas that include pixels PX and thus display images, and simultaneously may be areas on the upper side of the third-party DR3 that provide touch sensors and thus sense external input.

[0069] The transmissive area TA of the cover window WU may at least partially overlap with the display area DA and component area EA of the display panel DP. For example, the transmissive area TA may overlap with the front surface of the display area DA and component area EA, or may overlap with at least a portion of the display area DA and component area EA. Accordingly, a user can view an image through the transmissive area TA and / or provide external input based on that image. However, this disclosure is not limited thereto. For example, the area for displaying the image and the area for sensing external input may be separate from each other.

[0070] The non-display area PA of the display panel DP may overlap with at least a portion of the blocking area BA of the cover window WU. The non-display area PA may be an area covered by the blocking area BA. The non-display area PA may be adjacent to the display area DA and may surround (e.g., around) the display area DA. The non-display area PA does not display an image, and drive circuitry and / or drive wiring for driving the display area DA may be provided in the non-display area PA. The non-display area PA may include a first peripheral area PA1 provided outside the display area DA and a second peripheral area PA2 containing the driver 50, connection wiring, and bending areas. Figure 2 In one embodiment, a first peripheral region PA1 is provided on three sides of the display region DA, and a second peripheral region PA2 is provided on the remaining side.

[0071] In an embodiment, the display panel DP can be assembled with the display area DA, component area EA, and non-display area PA facing the cover window WU in a flat state. However, this disclosure is not limited thereto. The non-display area PA of the display panel DP can be partially bendable. In this embodiment, a portion of the non-display area PA faces the rear surface of the display device 1000, and thus the obstruction area BA visible from the front surface of the display device 1000 can be reduced, and... Figure 2 In this process, the second peripheral region PA2 can be assembled after being bent and provided on the rear surface of the display region DA.

[0072] In an embodiment, the component region EA of the display panel DP may include a first component region EA1 and a second component region EA2. The first component region EA1 and the second component region EA2 may at least partially surround (e.g., be surrounded by) the display region DA. The first component region EA1 and the second component region EA2 are illustrated as being separate from each other, but are not limited thereto and may at least partially connect. The first component region EA1 and the second component region EA2 may be optical elements utilizing infrared light, visible light, and / or sound (see reference). Figure 2 The ES (also referred to as components below) are placed in the area below them.

[0073] In the display area DA (hereinafter also referred to as the main display area) and the component area EA, multiple light-emitting diodes (LEDs) and multiple pixel circuit sections can generate luminous current and transmit that luminous current to the multiple LEDs. In an embodiment, one LED and one pixel circuit section are referred to as a pixel PX. In the display area DA and the component area EA, one pixel circuit section and one LED can be formed one-to-one.

[0074] The first component region EA1 may include a display unit comprising a plurality of pixels and a transparent portion that allows light and / or sound to pass through. The transparent portion is formed between adjacent pixels and is permeable (e.g., transmissive) to light and / or sound. The transparent portion may be between adjacent pixels, and depending on the embodiment, a light-blocking layer, such as a light-shielding layer, may overlap with the first component region EA1. The number of pixels per unit area (hereinafter referred to as resolution) of the pixels included in the display region DA (hereinafter referred to as normal pixels) and the number of pixels per unit area of ​​the pixels included in the first component region EA1 (hereinafter referred to as first component pixels) may be the same.

[0075] The second component region EA2 includes a region formed by a transparent layer that allows light to pass through (hereinafter also referred to as the light-transmitting region). The light-transmitting region may have a structure in which no conductive layer (e.g., a conductive layer) or semiconductor layer is provided, and layers including light-shielding materials, such as pixel defining layers and / or light-shielding layers, include openings that overlap with the positions corresponding to the second component region EA2, thereby not blocking light (e.g., substantially not blocking light transmission). The number of pixels per unit area of ​​the pixels included in the second component region EA2 (hereinafter also referred to as second component pixels) may be less than the number of pixels per unit area of ​​the normal pixels included in the display region DA. As a result, the resolution of the second component pixels may be lower than the resolution of the normal pixels.

[0076] Depending on the embodiment, a blocking region overlapping with at least two color filters is formed instead of a light-shielding layer to block light of a set or specific wavelength (e.g., visible light, etc.) (or reduce the transmission of that light).

[0077] refer to 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. The display panel DP, including the pixels PX that form the basis for generating images, can be viewed by a user from the outside via the transmissive area TA. In an embodiment, the touch sensor TS is located above the pixels PX and can sense external input applied from the outside. The touch sensor TS can sense external input provided to the cover window WU.

[0078] Return to reference Figure 2The second peripheral region PA2 may include a bent portion. The display region DA and the first peripheral region PA1 can be in a flat state, substantially parallel to the plane defined by the first direction DR1 and the second direction DR2, and one side of the second peripheral region PA2 can extend from the flat state, bend, and then become flat again. As a result, at least a portion of the second peripheral region PA2 can be assembled to be bent and provided on the rear surface of the display region DA. When assembled, at least a portion of the second peripheral region PA2 overlaps with the display region DA in the plane, and thus the obstruction area BA of the display device 1000 can be reduced. However, this disclosure is not limited thereto. For example, the second peripheral region PA2 may not be bent.

[0079] The driver 50 can be mounted on the second peripheral region PA2, or it can be mounted on the bent portion or provided on one of the opposite sides of the bent portion. The driver 50 can be provided in chip form.

[0080] Driver 50 is electrically connected to the display area DA and the component area EA, and can transmit electrical signals to the pixels in the display area DA and the component area EA. For example, driver 50 can provide data signals to the pixel PX provided in the display area DA. In an embodiment, driver 50 may include touch driving circuitry and may be electrically connected to a touch sensor TS provided in the display area DA and / or the component area EA. In an embodiment, in addition to the circuitry described above, driver 50 may be designed to include various suitable circuitry and provide various suitable electrical signals to the display area DA.

[0081] In one embodiment, a pad portion may be provided at the end of the second peripheral region PA2, and the display device 1000 may be electrically connected to a flexible printed circuit board (FPCB) including a driver chip via the pad portion. In another embodiment, the driver chip provided in the flexible printed circuit board may include various suitable driver circuits for driving the display device 1000 or a connector for power supply. Depending on the embodiment, a rigid printed circuit board (PCB) may be used instead of a flexible printed circuit board.

[0082] Optical element ES can be located below display panel DP. Optical element ES may include a first optical element ES1 overlapping with a first component region EA1 and a second optical element ES2 overlapping with a second component region EA2. The first optical element ES1 may also use infrared light, and in this embodiment, the first component region EA1 may have an opaque layer, such as a light-shielding layer, overlapping with the first component region EA1.

[0083] The first optical element ES1 can be an electronic component that uses light and / or sound. For example, the first optical element ES1 can be a sensor that receives and utilizes light, such as an infrared sensor; a sensor that outputs and detects light and / or sound to measure distance and / or identify fingerprints; a small lamp that outputs light; and / or a speaker that outputs sound. In embodiments utilizing light-based electronic components, light of various suitable wavelengths can be used, such as visible light, infrared light, and / or ultraviolet light.

[0084] The second optical element ES2 may be at least one selected from an IR camera, a dot projector, an IR illuminator, and a time-of-flight (ToF) sensor.

[0085] refer to Figure 3 The display device 1000 may include a display panel DP, a power supply module PM, a first electronic module EM1, and a second electronic module EM2. The display panel DP, the power supply module PM, the first electronic module EM1, and the second electronic module EM2 may be electrically connected to each other. Figure 3 The illustration shows the display pixels and touch sensor TS provided in the display area DA in the construction of the display panel DP.

[0086] The power supply module PM can supply the power required for the overall operation of the display device 1000. The power supply module PM can include any suitable battery module.

[0087] The first electronic module EM1 and the second electronic module EM2 may include various suitable functional modules for the operation of the display device 1000. The first electronic module EM1 may be directly mounted on a motherboard that is electrically connected to the display panel DP, or it may be mounted on a separate substrate and electrically connected to the motherboard via a connector or the like.

[0088] The first electronic module EM1 may include a control module CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF. Some of these modules may not be mounted on the motherboard, but may be electrically connected to the motherboard via a flexible printed circuit board attached to them.

[0089] The control module CM can control the overall operation of the display device 1000. The control module CM can be a microprocessor. For example, the control module CM can activate or deactivate the display panel DP. The control module CM can control other modules such as the image input module IIM or the audio input module AIM based on touch signals received from the display panel DP.

[0090] The wireless communication module TM can use Bluetooth and / or Wi-Fi lines to send wireless signals to or receive wireless signals from other terminals. The wireless communication module TM can use general communication lines to send / receive voice signals. The wireless communication module TM includes a transmitting section TM1 that modulates and transmits the modulated signal, and a receiving section TM2 that demodulates the received signal.

[0091] The Image Input Module (IIM) processes video signals and converts them into image data that can be displayed on the Display Panel (DP). The Audio Input Module (AIM) receives external audio signals from a microphone in recording mode and / or voice recognition mode and converts the external audio signals into electronic voice data.

[0092] The external interface IF can serve as an interface for connecting to external chargers, wired / wireless data ports and / or card (e.g., memory card, SIM / UIM card) sockets, etc.

[0093] The second electronic module EM2 may include an audio output module AOM, a light-emitting module LM, a light-receiving module LRM, and / or a camera module CMM, etc., and as Figure 1 and Figure 2 As shown, at least some of them can be on the rear surface of the display panel DP. As optical elements ES, they may include a light-emitting module LM, a light-receiving module LRM, and a camera module CMM. In an embodiment, the second electronic module EM2 can be directly mounted on the motherboard, mounted on a separate substrate and electrically connected to the display panel DP via a connector, or electrically connected to the first electronic module EM1.

[0094] The audio output module AOM can convert audio data received from the wireless communication module TM and / or stored in the memory MM, and output the converted data to the outside.

[0095] A light-emitting module (LM) can generate and output light. The LM can output infrared light. For example, the LM may include LED elements. A light-receiving module (LRM) can sense infrared light. The LRM can be activated when infrared light above a set level is detected. The LRM may include a complementary metal-oxide-semiconductor (CMOS) sensor. After the infrared light generated by the LM is output, it is reflected by an external object (e.g., a user's finger and / or face), and the reflected infrared light can be incident on the LRM. A camera module (CMM) can capture external images.

[0096] In embodiments, the optical element ES may additionally include a light detection sensor and / or a thermal detection sensor. The optical element ES can detect external objects received through the front surface, or provide sound signals such as speech to the outside through the front surface. In embodiments, the optical element ES may include multiple constituent elements and is not limited to any one embodiment.

[0097] Return to reference Figure 2 The housing HM can be combined with the cover window WU. The cover window WU can be located on the front surface of the housing HM. The housing HM and the cover window WU are combined and provide a set or predetermined receiving space. The display panel DP and optical components ES can be housed in the set or predetermined receiving space provided between the housing HM and the cover window WU.

[0098] The housing HM may include materials with relatively high rigidity. For example, the housing HM may include glass, plastic (e.g., polymer) and / or metal, and / or may include multiple frames and / or plates formed by a combination of glass, plastic (e.g., polymer) and metal. The housing HM can stably protect the components of the display device 1000 housed in the internal space from external impacts.

[0099] In the following text, reference will be made to Figure 4 The structure of a display device 1000 according to another embodiment is described.

[0100] Figure 4 This is a schematic perspective view of a light-emitting display device according to another embodiment.

[0101] Here, the description of the same structure as the aforementioned components can be omitted, and Figure 4 The embodiment illustration shows a foldable display device in which the display device 1000 is folded via a folding axis FAX.

[0102] refer to Figure 4 In this embodiment, the display device 1000 may be a foldable display device. The display device 1000 may be folded outward and / or inward using a folding axis FAX as a reference. When the reference folding axis FAX is folded outward, the display plane of the display device 1000 may be provided on the outer side of the third-direction DR3, allowing images to be displayed in both directions. When folded inward with reference to the folding axis FAX, the display surface may not be visible from the outside.

[0103] In an embodiment, the display device 1000 may include a display area DA, a component area EA, and a non-display area PA. 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. The 1-1 display area DA1-1 and the 1-2 display area DA1-2 may be provided on the left and right sides relative to the folding axis FAX, and the folding area FA may be located between the 1-1 display area DA1-1 and the 1-2 display area DA1-2. In this embodiment, when the reference folding axis FAX is folded outward, the 1-1 display area DA1-1 and the 1-2 display area DA1-2 are provided on opposite sides along the third direction DR3, so that the image can be displayed in both directions. In an embodiment, when folded inward, the 1-1 display area DA1-1 and the 1-2 display area DA1-2 may not be visible from the outside.

[0104] Figure 5 This is a top plan view of an enlarged view of a region of a light-emitting display device according to an embodiment.

[0105] Figure 5 The illustration shows a portion of the light-emitting display panel DP of a light-emitting display device according to an embodiment, and uses a display panel for a mobile phone, but the present disclosure is not limited thereto.

[0106] A display area DA is provided in the front surface of the light-emitting display panel DP, and a component area EA is also provided in the display area DA. In an embodiment, the component area EA may include a first component area EA1 and a second component area EA2. Figure 5 In one embodiment, the first component region EA1 is provided at a position adjacent to the second component region EA2. Figure 5 In one embodiment, the first component region EA1 is provided to the left of the second component region EA2. The position and number of the first component regions EA1 may be appropriately changed depending on the embodiment. Figure 5 In this context, the second optical element ES2 corresponding to the second component region EA2 can be a camera, and the first optical element ES1 corresponding to the first component region EA1 can be an optical sensor.

[0107] In the display area DA, multiple light-emitting diodes (LEDs) and multiple pixel circuit sections that generate light-emitting current and transmit it to the LEDs are provided. In an embodiment, one LED and one pixel circuit section form a pixel PX. A pixel circuit section and one LED can be formed one-to-one in the display area DA. The display area DA is also referred to as the normal display area. Figure 5 The structure below the cut line of the light-emitting display panel DP is not shown in the diagram, but the display area DA may be below the cut line.

[0108] According to an embodiment, the light-emitting display panel DP can be divided into a lower panel layer and an upper panel layer. The lower panel layer provides the light-emitting diodes and pixel circuitry that form pixels, and may include an encapsulation layer covering the lower panel layer (see reference). Figure 6 (400). In an embodiment, the lower panel layer includes a substrate (reference 400). Figure 6 (110) to the anode of the encapsulation layer, pixel confinement layer (reference) Figure 6 380), luminescent layer (reference) Figure 6 EML), spacers (reference) Figure 6 385), functional layer (reference) Figure 6 FL) and cathode (reference) Figure 6 The cathode includes an insulating layer (e.g., an electrically insulating layer) between the substrate and the anode, a semiconductor layer, and a conductive layer (e.g., a conductive layer). In an embodiment, the upper panel layer is the portion above the encapsulation layer and includes a sensing insulating layer capable of detecting touch (see reference). Figure 6 (501, 510 and 511) and multiple sensing electrodes (reference) Figure 6 (540 and 541), and may include a light-shielding layer (see reference). Figure 6 220), color filter (reference) Figure 6 (230R, 230G and 230B) and planarization layer (refer to) Figure 6 (550).

[0109] The first component region EA1 may be formed solely by a transparent layer to allow light to pass through, and may not provide a conductive layer (e.g., a conductive layer) or a semiconductor layer to allow light to pass through. It may have an optical sensor region in the lower panel layer, and openings (hereinafter also referred to as additional openings) may be provided in the pixel defining layer and the light-shielding layer and color filter layer of the upper panel layer at positions corresponding to the first component region EA1 to have a structure that does not block light (e.g., substantially does not block light transmission). In an embodiment, even if the optical sensor region is provided in the lower panel layer, the optical sensor region may be the display region DA instead of the first component region EA1 if there is no corresponding opening in the upper panel layer. A first component region EA1 may include multiple adjacent optical sensor regions, and in this embodiment, pixels adjacent to the optical sensor regions may be included in the first component region EA1. In an embodiment, when the first optical element ES1 corresponding to the first component region EA1 uses infrared light instead of visible light, the first component region EA1 may overlap with a light-shielding layer 220 that blocks visible light (or reduces visible light transmission).

[0110] The second component region EA2 may include second component pixels and light-transmitting areas, and the space between adjacent second component pixels may be a light-transmitting area.

[0111] Although not in Figure 5 The diagram shows an area, but a peripheral area can be provided further outside the display area DA. Figure 5 The illustration depicts a display panel for a mobile phone, but this embodiment can be applied to any suitable display device on which optical elements can be located on the rear surface of the display panel, and it can also be a flexible display device. In an embodiment of a foldable display device within a flexible display device, the positions of the second component region EA2 and the first component region EA1 can be formed with respect to... Figure 5 The different positions in the middle.

[0112] The structure of the light-emitting display panel DP according to an embodiment will be described below.

[0113] Figure 6 This is a schematic cross-sectional view of the display panel according to an embodiment.

[0114] According to the embodiment, the light-emitting display panel DP can display images by providing light-emitting diodes on the substrate 110, sense touch by including a plurality of sensing electrodes 540 and 541, and include a light-shielding layer 220 and color filters 230R, 230G and 230B, such that the light emitted from the light-emitting diodes also has the color characteristics of the color filters 230R, 230G and 230B.

[0115] In this embodiment, a polarizing plate is not formed on the front surface of the light-emitting display panel DP according to the embodiment. Instead, the pixel defining layer 380 is provided with a black organic material, while the light-shielding layer 220 and color filters 230R, 230G, and 230B are on top, so that even if external light is incident inside, it is not reflected by the anode and transmitted to the user. In this embodiment, because a polarizing plate is not formed, the brightness does not decrease as light emitted from the light-emitting layer is partially absorbed by the polarizing plate, and therefore a light-emitting display device with a maximum brightness value of 2500 nits or more can be provided.

[0116] The light-emitting display panel DP according to the embodiment will be described in more detail below.

[0117] The substrate 110 may include a rigid material such as glass that cannot be bent or a flexible material such as plastic (e.g., polymer) and / or polyimide that can be bent.

[0118] Multiple thin-film transistors are on substrate 110, but in Figure 6 These are omitted, and only the organic layer 180 covering the thin-film transistors is shown. A pixel is provided with a light-emitting diode and a pixel circuit portion, which includes multiple transistors and capacitors for transferring light-emitting current to the light-emitting diode. Figure 6The pixel circuit portion is not shown in the figure, and the structure of the pixel circuit portion may be appropriately changed depending on the embodiment. Figure 6 The diagram is shown starting from the organic layer 180 covering the pixel circuitry portion.

[0119] A light-emitting diode, including an anode, an emissive layer (EML), and a cathode, is mounted on an organic layer 180.

[0120] The anode can be formed from a single layer comprising a transparent conductive oxide layer and a metallic material, or from multiple layers comprising a transparent conductive oxide layer and / or a metallic material. The transparent conductive oxide layer may include indium tin oxide (ITO), polycrystalline ITO, indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), and / or indium tin zinc oxide (ITZO), etc., and the metallic material may include silver (Ag), molybdenum (Mo), copper (Cu), gold (Au), and / or aluminum (Al), etc.

[0121] The light-emitting layer (EML) can be formed of an organic light-emitting material, and adjacent EMLs can display different colors. Depending on the embodiment, each EML can display the same color due to the color filters 230R, 230G, and 230B provided above. Depending on the embodiment, the EML can have a structure in which multiple light-emitting layers are stacked (also known as a tandem structure).

[0122] Pixel defining layer 380 is on organic layer 180 and anode, and an opening OP (hereinafter also referred to as a first opening) is provided in pixel defining layer 380. The opening OP partially overlaps with anode, and light emitting layer EML is on the portion of anode exposed by opening OP. Light emitting layer EML may be provided only in opening OP of pixel defining layer 380 and separated from adjacent light emitting layer EML by pixel defining layer 380.

[0123] The pixel defining layer 380 can be formed of an organic material having a negative black color (e.g., a negative class of black). The black organic material can include a light-shielding material, and the light-shielding material can include carbon black, carbon nanotubes, resins and / or slurries containing black dyes, metal particles such as nickel, aluminum, molybdenum and / or alloys thereof, metal oxide particles and / or metal nitride (e.g., chromium nitride) particles. The pixel defining layer 380 includes a light-shielding material and has a black color, and can have the property that light is absorbed / blocked instead of reflected. Because a negative (or class of) organic material is used, it can have the property of removing portions covered by a mask.

[0124] Spacer 385 is formed on pixel defining layer 380. Spacer 385 includes a first portion 385-1 provided in a high and narrow region and a second portion 385-2 provided in a low and wide region. Figure 6 In the image, the first portion 385-1 and the second portion 385-2 are separated by a dashed line within the spacer 385. In an embodiment, the first portion 385-1 can be used to ensure rigidity against compressive pressure by enhancing scratch resistance. The second portion 385-2 can act as a contact aid between the pixel defining layer 380 and the functional layer FL above it. The first portion 385-1 and the second portion 385-2 are formed of the same material, which can be formed of a positive (or similar) photosensitive organic material, for example, photosensitive polyimide (PSPI) can be used. Because of its positive properties, the portion not covered by the mask can be removed. The spacer 385 is transparent, and therefore light can pass through and / or can be reflected.

[0125] The pixel defining layer 380 can be formed as negative (or of a kind) and the spacer 385 can be formed as positive (or of a kind), and depending on the embodiment, they can include the same type (or kind) of material.

[0126] A portion of the upper surface of the pixel defining layer 380 is covered by the spacer 385, and the edge of the second portion 385-2 is separated from the edge of the pixel defining layer 380, such that a portion of the pixel defining layer 380 is not covered by the spacer 385. The second portion 385-2 can cover the upper surface of the pixel defining layer 380 that does not have the first portion 385-1, thereby enhancing the adhesion between the pixel defining layer 380 and the functional layer FL. In this embodiment, the spacer 385 is only provided in the area that overlaps with the light-shielding layer 220 in the plane, as will be described further herein, and therefore, when viewed from the front of the display panel DP, the spacer 385 is not visible behind the light-shielding layer 220.

[0127] The functional layer FL is located on the spacer 385 and the exposed pixel defining layer 380, and the functional layer FL can be provided in the front surface of the light-emitting display panel DP or can be provided in the entire light-emitting display panel DP excluding, for example, the light-transmitting portion of the second component region EA2. 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 can be provided above and / or below the light-emitting layer EML. For example, the hole injection layer, hole transport layer, light-emitting layer EML, electron transport layer, electron injection layer, and cathode are sequentially located on the anode, such that the hole injection layer and hole transport layer of the functional layer FL can be provided below the light-emitting layer EML and the electron transport layer and electron injection layer can be provided above the light-emitting layer EML.

[0128] The spacer 385 can improve the scratch resistance of the light-emitting display panel DP to reduce the defect rate due to pressing pressure, and, depending on the embodiment, can improve the adhesive strength with the functional layer FL provided above the spacer 385 to prevent or reduce the injection of moisture and / or air from the outside. In embodiments, when the light-emitting display panel DP has flexible properties and is folded and / or unfolded, the high adhesive strength has the advantage of eliminating the problem of deterioration of the adhesive strength between layers.

[0129] The cathode can be formed from a transmission electrode or a reflection electrode. Depending on the embodiment, the cathode can be a transparent or translucent electrode and can be formed from a thin film of metal with a low work function, including lithium (Li), calcium (Ca), aluminum (Al), silver (Ag), magnesium (Mg) or compounds thereof, or a material with a multilayer structure (e.g., lithium fluoride / calcium (LiF / Ca) or lithium fluoride / aluminum (LiF / Al)). In embodiments, a transparent conductive oxide (TCO) layer such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium oxide (In2O3) can be further formed on the metal thin film. The cathode can be integrally formed across the entire surface of the light-emitting display panel DP.

[0130] The encapsulation layer 400 is on the cathode. The encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and... Figure 6 In this embodiment, the encapsulation layer 400 has a three-layer structure comprising a first inorganic encapsulation layer 401, an organic encapsulation layer 402, and a second inorganic encapsulation layer 403. The encapsulation layer 400 can be used to protect the light-emitting layer (EML) formed of organic materials from moisture and / or oxygen that may enter from the outside. Depending on the embodiment, the encapsulation layer 400 may include a structure in which the inorganic and organic layers are sequentially stacked in greater numbers.

[0131] On the encapsulation layer 400, sensing insulating layers 501, 510, and 511, as well as multiple sensing electrodes 540 and 541, are provided to sense touch. Figure 6In some embodiments, two sensing electrodes 540 and 541 are used to detect touch using a mutual capacitance type (or type), but depending on the embodiment, only one sensing electrode may be used to detect touch using a self-capacitance type (or type). The plurality of sensing electrodes 540 and 541 may be insulated from each other (e.g., electrically insulated) while a second sensing insulating layer 510 is provided therebetween, with the lower sensing electrode 541 on the first sensing insulating layer 501, the upper sensing electrode 540 on the second sensing insulating layer 510, and the upper sensing electrode 540 covered by a third sensing insulating layer 511. The plurality of sensing electrodes 540 and 541 may be electrically connected to each other by providing openings in the second sensing insulating layer 510. In some embodiments, the sensing electrodes 540 and 541 may comprise metals and / or metal alloys thereof such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), and / or tantalum (Ta), and may be formed from a single layer or multiple layers.

[0132] The light-shielding layer 220 and color filters 230R, 230G and 230B are on the third sensing insulating layer 511.

[0133] The light-shielding layer 220 may overlap with the sensing electrodes 540 and 541 on a plane, but may not overlap with the anode on a plane. This is to prevent the anode and the light-emitting layer EML, which can display images, from being covered by the light-shielding layer 220 and the sensing electrodes 540 and 541.

[0134] refer to Figure 6 The light-shielding layer 220 is provided only in the area that overlaps with the pixel-defining layer 380 on the plane, and one side of the light-shielding layer 220 is provided inward from the corresponding side of the pixel-defining layer 380.

[0135] The light-shielding layer 220 has an opening OPBM (hereinafter also referred to as the second opening) and the area of ​​the second opening OPBM of the light-shielding layer 220 is larger than the area of ​​the opening OP of the pixel limiting layer 380, and the opening OP of the pixel limiting layer 380 can be provided in the second opening OPBM of the light-shielding layer 220 on a plane.

[0136] In this embodiment, one side of the spacer 385 is provided inwardly from the corresponding side of the pixel defining layer 380 by a predetermined or specific distance g1, and the spacer 385 is also provided inwardly relative to one side of the light-shielding layer 220. As a result, when viewed from the front of the display panel DP, the spacer 385 may be invisible due to the light-shielding layer 220.

[0137] When external light is incident, it can pass through the second opening OPBM of the light-shielding layer 220 and is then reflected from the sidewalls of the opening OP of the pixel defining layer 380. The sidewalls of the opening OP of the pixel defining layer 380 are curved, and therefore, color separation occurs depending on the reflection position, and the color of the reflected light can be represented by a variety of suitable colors, like a rainbow. In an embodiment, when as Figure 33 As shown, when at least one selected from the opening OP and OPBM is formed in an elliptical shape (e.g., a generally elliptical shape) and has directionality, the degree of external light reflection can be appropriately varied depending on the angle, and therefore periodic color spots can be visible depending on the angle. Because such color-separated reflected light or color spots can be easily noticed by the user and lead to a degradation of display quality, the minimum number of unit pixels included in the repeating unit pixels repeatedly provided in the display area can be reduced to, for example, a 2×2 array, or the difference in the reflectivity of external light according to the angle can be formed to be approximately within a set or specific range, such that the difference in the reflectivity of external light is not perceptible to the user. In embodiments, the second opening OPBM of the light-shielding layer 220 and the opening OP of the pixel defining layer 380 are each provided in an elliptical shape (e.g., a generally elliptical shape), and the direction or eccentricity of the ellipse is provided in various suitable ways to reduce color separation or allow white reflected light to be identified. (Refer to...) Figure 7 This will be described in more detail.

[0138] Color filters 230R, 230G, and 230B are located on sensing insulating layers 501, 510, and 511 and on light-shielding layer 220. Color filters 230R, 230G, and 230B include a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light. Each of the color filters 230R, 230G, and 230B may overlap with the anode of the light-emitting diode (LED) in a plane, and one of the color filters 230R, 230G, and 230B may fill the second opening OPBM of the light-shielding layer 220. A portion of the color filters 230R, 230G, and 230B may also be located on the upper surface of the light-shielding layer 220. Light emitted from the light-emitting layer EML can be emitted while changing to the corresponding color as it passes through the color filters, and therefore all light emitted from the light-emitting layer EML can have the same color. However, the EML (Emitting Layer) can display different colors of light and enhance the displayed colors by allowing light to pass through color filters of the same color.

[0139] A light-shielding layer 220 may be located between color filters 230R, 230G, and 230B. Depending on the embodiment, color filters 230R, 230G, and 230B may be replaced by a color conversion layer, or may further include a color conversion layer. The color conversion layer may include quantum dots.

[0140] A planarization layer 550 covers color filters 230R, 230G, and 230B. The planarization layer 550 planarizes the upper surface of the light-emitting display panel DP and may be a transparent organic insulator (e.g., a transparent organic electrical insulator) comprising one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0141] Depending on the embodiment, a low-refractive-index layer and an additional planarization layer may be present on planarization layer 550 to improve the front visibility and light output efficiency of the display panel. Light can be refracted and emitted forward by the additional planarization layer, which has both low and high refractive index characteristics. In this embodiment, depending on the embodiment, planarization layer 550 may be omitted, and the low-refractive-index layer and the additional planarization layer may be present directly on color filters 230R, 230G, and 230B.

[0142] In this embodiment, the polarizing plate may not be included above the planarization layer 550. For example, the polarizing plate can be used to prevent or reduce the degradation of display quality when external light is incident and reflected from the sidewalls of the opening OP of the anode or pixel defining layer 380 while remaining visible to the user. However, because the polarizing plate reduces not only the reflection of external light but also the light emitted from the emissive layer EML, it has the disadvantage of consuming more power to display a set or specific brightness. To reduce power consumption, the light-emitting display device according to this embodiment may not include a polarizing plate. In this embodiment, the light-emitting display device does not include a polarizing plate, and therefore, the light emitted from the emissive layer EML is not partially absorbed by the polarizing plate, so that the brightness is not reduced, thereby providing a light-emitting display device with a maximum brightness value of 2500 nits or more.

[0143] In this embodiment, a structure is included that covers the side surface of the anode with a pixel defining layer 380 to reduce the amount of reflection from the anode, and a light-shielding layer 220 is also provided to reduce the amount of light entering, thereby preventing or reducing the degradation of display quality due to reflection. Therefore, it is not necessary to form a polarizing plate separately on the front side of the light-emitting display panel DP.

[0144] Multiple pixels are provided in the display area DA of the light-emitting display device and thus display an image, and a pixel may include at least two of the sub-pixels of red (R), green (G), and blue (B). The display area DA includes a minimum unit pixel containing at least one of the sub-pixels of red (R), green (G), and blue (B), and the minimum unit pixel may have an elliptical shape (e.g., a generally elliptical shape) with openings OP and OPBM that differ from the openings OP and OPBM of adjacent minimum unit pixels in terms of eccentricity and / or major axis direction. In embodiments, the minimum unit pixel may be provided within a square or equivalent area of ​​the display area DA. Multiple such minimum unit pixels are included, and thus repeating unit pixels are provided, and repeating unit pixels may be formed while repeating throughout the entire area of ​​the display area DA. The repeating unit pixel may have an elliptical shape (e.g., a generally elliptical shape) with openings OP and OPBM corresponding to adjacent repeating unit pixels having the same eccentricity and the same major axis direction. The repeating unit pixel may also be provided within a square or equivalent area of ​​the display area DA, but with an area larger than the area where the minimum unit pixel is provided.

[0145] In the following text, reference will be made to Figure 7 and Figure 8 This describes the two types (or kinds) of structures that provide the smallest unit pixel in the display area DA. Figure 7 and Figure 8 The embodiment of the smallest unit pixel shown is the smallest unit pixel used in the embodiments described throughout this specification, and except for Figure 7 and Figure 8 The smallest unit pixel, other than the smallest unit pixel shown, can be provided in the display area DA of the light-emitting display device. The smallest unit pixel includes at least one sub-pixel of red (R), green (G), and blue (B), and can be provided in an elliptical shape (e.g., a generally elliptical shape) at various suitable angles along various suitable major axis directions and eccentricities.

[0146] Figure 7 and Figure 8 This provides a top plan view of the smallest unit pixel in the display panel according to an embodiment.

[0147] refer to Figure 7 and Figure 8 The second opening of the light-shielding layer 220 and the first opening of the pixel-defining layer in the light-emitting display panel DP are respectively provided in an elliptical (e.g., approximately elliptical) shape.

[0148] First, further description will be given based on Figure 7 The smallest unit pixel in the embodiment.

[0149] Figure 7 The smallest unit pixel is also called the first smallest unit pixel, and can be the smallest unit pixel used to form the first repeating unit pixel. The first repeating unit pixel can also be called a diamond array, and... Figure 9 and Figures 13 to 17 As shown in the diagram. Figure 7 As shown, the first smallest unit pixel may include four green G sub-pixels, two red R sub-pixels, and two blue B sub-pixels. Figure 7 The illustration shows the planar shape of each subpixel when viewed from the front of the luminescent display panel DP. Most of the area is blocked by the light-shielding layer 220, and the pixel-defining layer (see reference) Figure 6 The portions of the first openings OPr, OPg, and OPb of the pixel-defined layer 220 (380) that are not blocked by the second openings OPBMr, OPBMg, and OPBMb of the light-blocking layer 220 are illustrated. Pixel-defined layer (reference) Figure 6 380) is provided in the region between the second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 and the first openings OPr, OPg, and OPb of the pixel-defining layer, and the light-emitting layer (refer to) Figure 6 The EML (Emitting Material Layer) is provided in the first openings OPr, OPg, and OPb of the pixel-defining layer. Within the first openings OPr, OPg, and OPb of the pixel-defining layer, the emitting layer is distinguished by different patterns.

[0150] exist Figure 7 In this embodiment, the green G sub-pixel corresponds to the second opening OPBMg of the green light-shielding layer 220 and the first opening OPg of the green pixel-defining layer, and the portion that actually emits light can be the light-emitting layer provided in the first opening OPg of the green pixel-defining layer. In this embodiment, the red R sub-pixel corresponds to the second opening OPBMr of the red light-shielding layer 220 and the first opening OPr of the red pixel-defining layer, and the blue B sub-pixel corresponds to the second opening OPBMb of the blue light-shielding layer 220 and the first opening OPb of the blue pixel-defining layer.

[0151] Reference Figure 7 The first smallest unit pixel of the embodiment includes four green G sub-pixels, and a square (hereinafter also referred to as the first square) can be formed by connecting the four green G sub-pixels at specific intervals with horizontal and vertical straight lines. A red R sub-pixel is provided in the square formed by the four green G sub-pixels. However, depending on the embodiment, a blue B sub-pixel may be provided. In the embodiment, there are two red R sub-pixels and two blue B sub-pixels, each provided diagonally relative to each other. The square (hereinafter also referred to as the second square) can be formed by connecting the two red R sub-pixels and the two blue B sub-pixels at specific intervals with horizontal and vertical straight lines.

[0152] The second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 included in the first minimum unit pixel, and the first openings OPr, OPg, and OPb of the pixel-defining layer, can each be provided with various suitable eccentricities and major axis directions. Figure 7 In the first smallest unit pixel of the embodiment, first openings OPr, OPg, and OPb of the same color have the same eccentricity, and second openings OPBMr, OPBMg, and OPBMb of the same color have the same eccentricity, but their angles in the major axis direction can be provided differently. Figure 7 In the first minimum unit pixel of the embodiment, the angle along the major axis is provided as one of 0 degrees, 45 degrees, 90 degrees, and 135 degrees. Depending on the embodiment, there may be an angle difference of 45 × n degrees (where n is a natural number greater than or equal to 1 and less than or equal to 8) between the major axes of adjacent ellipses of the same color in the minimum unit pixel. In the embodiment, depending on the embodiment, the number of major axis directions of adjacent ellipses of the same color in the minimum unit pixel and / or repeating unit pixels may be more than four, and in this embodiment, the interval between the major axis directions may have a non-constant angle such as more than 30 degrees and less than 60 degrees.

[0153] Figure 7 The first smallest unit pixel in the embodiment can be changed by altering Figure 9 The adjacent first minimum unit pixels are combined based on the eccentricity and / or the angle of the major axis of the ellipse to form a first repeating unit pixel. (Refer to...) Figure 9 The first repeating unit pixel according to the example embodiment will be further described.

[0154] Further description will be provided based on Figure 8 The smallest unit pixel in the embodiment.

[0155] Figure 8 The smallest unit pixel will be referred to below as the second smallest unit pixel, and may be the smallest unit pixel used to provide the second repeating unit pixel. The second repeating unit pixel may be provided in an S-striped array, and... Figure 21 , Figure 23 , Figure 25 , Figure 29 and Figure 37 As shown in the diagram. Figure 8 As shown, the second smallest unit pixel may include a green G sub-pixel, a red R sub-pixel, and a blue B sub-pixel. Figure 8 The illustration shows the planar shape of each subpixel when viewed from the front of the luminescent display panel DP. Most of the area is blocked by the light-shielding layer 220, and the pixel-defining layer (see reference) Figure 6The portions of the first openings OPr, OPg, and OPb of the pixel-defined layer 220 (380) that are not blocked by the second openings OPBMr, OPBMg, and OPBMb of the light-blocking layer 220 are illustrated. Pixel-defined layer (reference) Figure 6 380) is provided in the region between the second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 and the first openings OPr, OPg, and OPb of the pixel-defining layer, and the light-emitting layer (refer to) Figure 6 The EML (Emitting Material Layer) is provided in the first openings OPr, OPg, and OPb of the pixel-defining layer. Within the first openings OPr, OPg, and OPb of the pixel-defining layer, the emitting layer is distinguished by different patterns.

[0156] exist Figure 8 In this embodiment, the green G sub-pixel corresponds to the second opening OPBMg of the green light-shielding layer 220 and the first opening OPg of the green pixel-defining layer, and the portion that actually emits light can be the light-emitting layer provided in the first opening OPg of the green pixel-defining layer. In this embodiment, the red R sub-pixel corresponds to the second opening OPBMr of the red light-shielding layer 220 and the first opening OPr of the red pixel-defining layer, and the blue B sub-pixel corresponds to the second opening OPBMb of the blue light-shielding layer 220 and the first opening OPb of the blue pixel-defining layer.

[0157] Reference Figure 8 The second smallest unit pixel in the embodiment includes each of the green G sub-pixel, the red R sub-pixel, and the blue B sub-pixel, and the triangular shape can be formed by connecting them with straight lines (e.g., three straight lines).

[0158] The second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 included in the second smallest unit pixel, and the first openings OPr, OPg, and OPb of the pixel-defining layer, can each be provided with various suitable eccentricities and major axis directions. Figure 8 In one embodiment, the major axis angle of the second minimum unit pixel is provided as one of 0 degrees, 45 degrees, 90 degrees, and 135 degrees. Depending on the embodiment, there may be an angle difference of 45 × n degrees (where n is a natural number greater than or equal to 1 and less than or equal to 8) between the major axes of adjacent ellipses of the same color in the minimum unit pixel. In another embodiment, depending on the embodiment, the number of major axis directions of adjacent ellipses of the same color in the minimum unit pixel and / or repeating unit pixels may be more than four, and in this embodiment, the interval between the major axis directions may have a non-constant angle such as greater than 30 degrees and less than 60 degrees.

[0159] Figure 8 The second smallest unit pixel in the embodiment can be changed by altering Figure 21The adjacent first minimum unit pixels, formed by the eccentricity and / or angle of the major axis of the ellipse, are combined to form a second repeating unit pixel. (Refer to...) Figure 21 The second repeating unit pixel according to the example embodiment will be further described.

[0160] In the above text, refer to Figure 7 and Figure 8 This describes the structure of the smallest unit pixel for two types (or categories). According to Figure 7 and Figure 8 In this embodiment, the smallest unit pixel is distinguished by a green pixel as a reference, and depending on the embodiment, they may be distinguished by a red or blue pixel as a reference. In this embodiment, the pixel provided in the upper left corner may be a pixel of a different color than the green pixel.

[0161] In the following description, the repeating unit pixels according to each embodiment will be described based on the smallest unit pixel. First, reference will be made to... Figures 9 to 20C The description includes the structure of the first repeating unit pixel, which is the first smallest unit pixel, and then references... Figures 21 to 28 The description includes the structure of the second repeating unit pixel, which is the second smallest unit pixel.

[0162] Figures 9 to 17 The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0163] Figure 9 The planar structure of the first repeating unit pixel is shown. Figures 10 to 12 The table shows the angle of the major axis direction of the ellipse for each sub-pixel included in the first repeating unit pixel, and Figures 13 to 17 The illustration shows a table illustrating angles along the major axis of an ellipse and the corresponding planar structure of the first repeating unit pixel. In an embodiment, the first repeating unit pixel includes a first minimum unit pixel provided in a 2×2 array, or is composed of a first minimum unit pixel provided in a 2×2 array.

[0164] First, further description will be given based on Figure 9 The first repeating unit pixel in the embodiment.

[0165] and Figure 7 The opposite is shown in the image. Figure 9The first openings OPr, OPg, and OPb of the pixel-defining layer are not illustrated; only the second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 are shown. In embodiments, the first openings OPr, OPg, and OPb provided in the second openings OPBMr, OPBMg, and OPBMb may have an eccentricity corresponding to the eccentricity of the second openings OPBMr, OPBMg, and OPBMb, and may have an elliptical major axis direction that is the same as or similar to the major axis direction of the second openings OPBMr, OPBMg, and OPBMb. Figure 7 Conversely, as shown in Figure 9 In the light-shielding layer 220, the second openings OPBMr, OPBMg and OPBMb are filled with patterns, and each opening is distinguished by a different pattern.

[0166] exist Figure 9 In one embodiment, the first smallest unit pixel constituting the first repeating unit pixel is divided by dashed lines, and it can be confirmed that the first smallest unit pixel is provided in a 2×2 array. Figure 9 In one embodiment, the first minimum unit pixel is distinguished by a dashed line based on a green pixel as a reference, and depending on the embodiment, the first minimum unit pixel may be distinguished using a red pixel or a blue pixel as a reference.

[0167] The four first minimum unit pixels included in the first repeating unit pixel can have different major axis direction angles and / or eccentricities, and the first repeating unit pixel in the display area DA can have the same major axis direction angle and eccentricity as the adjacent first repeating unit pixel.

[0168] Included Figure 9 In the embodiment, the second openings OPBMr, OPBMg, and OPBMb of the same color in the first repeating unit pixel have the same eccentricity. In the embodiment, the first openings of the pixel-defined layer of the same color may also have the same eccentricity. In the embodiment, including Figure 9 In the embodiment, the angles along the major axis of the second openings OPBMr, OPBMg, and OPBMb in the first repeating unit pixel can be one of 0 degrees, 45 degrees, 90 degrees, and 135 degrees, and the angles along the major axis are arranged in... Figures 10 to 12 In the table.

[0169] Figure 10 The angle of the major axis of the red R sub-pixel is shown. Figure 11 The angle of the major axis of the green G sub-pixel is shown, and Figure 12 The angle of the major axis of the blue B sub-pixel is shown.

[0170] exist Figure 10In the text, there exist elements with the described major axis direction angle and elements marked with X, and the elements marked with X represent the elements provided. Figure 12 The blue B sub-pixel portion. Figure 12 In the text, there exist elements with the described major axis direction angle and elements marked with X, and the elements marked with X represent the elements provided. Figure 10 The portion of the red R sub-pixel. For example, when combined Figure 10 and Figure 12 At that time, a table was completed and displayed the overall major axis angle, indicating that a red R subpixel or a blue B subpixel was provided at the corresponding position with the written major axis angle. Conversely, in Figure 11 In the diagram, the major axis direction angle is described for each cell, and the major axis direction angle of the green G sub-pixel at each location is also described.

[0171] References and Figure 9 and Figure 10 The angle of the second opening OPBMr of the light-shielding layer 220 corresponding to the red R sub-pixel can be clearly identified in the long axis direction of the light-shielding layer 220. For example, a total of 8 are included. Figure 9 The second opening OPBMr of the light-shielding layer 220 corresponding to the red R sub-pixel in the image, and the angle of the major axis direction corresponding to these positions in the image. Figure 10 The table describes this. For example, Figure 10 The 0 degrees provided in the first row and first column of the table represent Figure 9 The second opening OPBMr of the light-shielding layer 220 corresponding to the red R sub-pixel provides an angle along the long axis of the second opening OPBMr on the upper left side. In the embodiment, Figure 12 The 45-degree angle provided in the second row and first column of the table represents Figure 9 The angle of the upper second opening OPBMb in the long axis direction of the second opening OPBMb in the second opening OPBMb of the light-shielding layer 220 corresponding to the blue B sub-pixel.

[0172] refer to Figure 11 It can be confirmed according to Figure 9 In the embodiment, the second openings OPBMg of the four light-shielding layers 220 corresponding to the green G sub-pixel in the first repeating unit pixel are arranged at the same long-axis angle at each corresponding position in each of the four smallest unit pixels. Conversely, referring to Figure 10 and Figure 12 ,according to Figure 9In the embodiments, the second openings OPBMr and OPBMb of the light-shielding layer 220 corresponding to the red R sub-pixels and blue B sub-pixels have different major axis angles at their corresponding positions in each adjacent smallest unit pixel. However, depending on the embodiment, the major axis angles between the first repeating unit pixels can differ by one or more, and the eccentricities can also be different. In the first repeating unit pixel, the major axis angles of the second openings OPBMr and OPBMb of the light-shielding layer 220 corresponding to the red R sub-pixels and blue B sub-pixels can have a greater effect on the reflection characteristics of external light than the second openings OPBMg of the four light-shielding layers 220 corresponding to the green G sub-pixels included in the maximum number.

[0173] exist Figures 10 to 12 In the diagram, cells with a major axis angle of 0 degrees are filled as bright, cells with a major axis angle of 90 degrees are filled as darkest, and cells with major axis angles of 45 degrees and 135 degrees are filled as medium dark. This is because when viewed from below, 0 degrees is the brightest, 90 degrees is the darkest, and 45 degrees or 135 degrees are medium brightness. However, the degree of external light reflection may vary depending on the user's viewing position. The table below shows the corresponding major axis angles.

[0174] Figures 13 to 17 Various suitable variations of the embodiments are illustrated. Figures 13 to 17 For comparison Figure 18 The effect, and Figure 16 It can be with Figure 9 The same as the embodiments.

[0175] Figures 13 to 17 The diagram illustrates the major axis angles of the second openings OPBMr and OPBMb of the light-shielding layer 220 corresponding to the red R sub-pixel and the blue B sub-pixel, as well as the planar structure of the corresponding first repeating unit pixel. That is, in Figures 13 to 17 The major axis angle of the second opening OPBMg of the four light-shielding layers 220 corresponding to the green G sub-pixel is not described. In the embodiment, the major axis angle of the second opening OPBMg of the four light-shielding layers 220 corresponding to the green G sub-pixel can be... Figure 11 They may be provided in the same or different ways. However, since the major axis angles of the second openings OPBMr and OPBMb of the light-shielding layer 220 corresponding to the red R sub-pixel and the blue B sub-pixel can have a greater effect on the reflection characteristics of external light than the major axis angles of the second openings OPBMg of the four light-shielding layers 220 corresponding to the green G sub-pixels included in the first repeating unit pixel in the maximum number, the major axis angles of the second openings OPBMr and OPBMb of the light-shielding layer 220 corresponding to the red R sub-pixel and the blue B sub-pixel will be mainly described.

[0176] exist Figure 13 In the table, the second openings OPBMr and OPBMb of the light-shielding layer 220 are connected by arrows to the corresponding long axis angles described in the table. This is an example, and the angles along the long axis listed in the table correspond to the second openings OPBMr and OPBMb of the light-shielding layer 220 in the same relationship.

[0177] The following text will refer to Figure 18 describe Figures 13 to 17 The reflection characteristics of external light according to the variation of eccentricity of the first repeating unit pixel in various embodiments shown in the figure.

[0178] Figure 18 The characteristics of reflected light from some embodiments are summarized.

[0179] Figure 18 The numbers described are visibility values, which are the difference between the maximum and minimum values ​​of reflected light brightness at a position in the first repeating unit pixel (minimum-maximum contrast). The larger the difference, the more likely the reflection of external light is to be perceived as a color spot by the user.

[0180] exist Figure 18 In this context, the visibility of external light is determined by the image... Figures 11 to 15 The eccentricity value e of the second opening of the light-shielding layer 220 corresponding to the green G sub-pixel is changed to 0.55, 0.50, and 0.45 in the first repeating unit pixel arranged in a 2×2 array, and the visibility value according to it is described.

[0181] refer to Figure 18 As can be seen, the visibility value decreases as the eccentricity value e decreases. Therefore, the smaller the eccentricity value e of the elliptical shape of the opening included in the first repeating unit pixel, the less external light can be detected. The eccentricity value e of the second opening of the light-shielding layer 220 corresponding to the green G sub-pixel can have a value greater than or equal to 0.40 and less than or equal to 0.55, and depending on the embodiment, the eccentricity value e can be less than 0.40. In the embodiment, the eccentricity value e of the second opening of the light-shielding layer 220 corresponding to the red R sub-pixel and the blue B sub-pixel can also have a value approximately equal to the eccentricity value e of the second opening of the light-shielding layer 220 corresponding to the green G sub-pixel.

[0182] exist Figure 18 In embodiments with the same eccentricity value e, such as Figure 16 and Figure 17 The placement of the second opening along its major axis can prevent or reduce the identification of reflected color spots from external light. (Reference) Figure 16 and Figure 17As can be seen, when viewed from below the major axis angle of the second opening of the light-blocking layer corresponding to the red R sub-pixel and the blue B sub-pixel, the darkest 90-degree angles are not provided adjacent to each other, and the 90-degree dark angle and the 0-degree bright angle are provided alternately. For example, when the darkest 90-degree angles are adjacent to each other, the difference in the reflection characteristics of external light will be greater, and therefore, by alternately providing the 90-degree dark angle and the 0-degree bright angle, the difference in the reflection characteristics of external light can be reduced.

[0183] refer to Figures 10 to 12 , Figure 16 and Figure 17 The red R sub-pixel, green G sub-pixel, and blue B sub-pixel can be provided with the following major axis angle of the second opening.

[0184] In the second opening corresponding to the red R sub-pixel and the second opening corresponding to the blue B sub-pixel, the second openings having a 90-degree difference in the long axis direction are alternately provided along a single diagonal direction, and in the long axis direction angles of the second opening corresponding to the red R sub-pixel and the second opening corresponding to the blue B sub-pixel, the directions of 0 degrees and 90 degrees and 45 degrees and 135 degrees can be alternately provided along a diagonal direction.

[0185] In an embodiment, in the second opening corresponding to the green G sub-pixel, the second opening having a 90-degree difference in the major axis direction angle is alternately provided along the horizontal or vertical direction, and in the major axis direction angle of the provided second opening corresponding to the green G sub-pixel, the directions of 0 degrees and 90 degrees and 45 degrees and 135 degrees can be alternately provided along the horizontal or vertical direction.

[0186] In one embodiment, a second opening is provided corresponding to the red R subpixel and the blue B subpixel, such that when viewed from one of a plurality of principal axis directions along which the second opening is provided, the darkest and brightest angles are alternately provided in one direction, and this direction can be one of a diagonal direction other than a vertical or horizontal direction. In another embodiment, another array adjacent to the same direction can be alternately provided at an angle of moderate brightness.

[0187] In an embodiment, a second opening corresponding to the green G subpixel can be provided such that when viewed from one of the multiple long axis directions along which the second opening is provided, the darkest and brightest angles are alternately provided along the vertical or horizontal direction, and in another adjacent array along the same vertical or horizontal direction, the second opening can be alternately provided at an angle of medium brightness.

[0188] Overall, a second opening is provided corresponding to the red R sub-pixel, the green G sub-pixel, and the blue B sub-pixel, so that the darkest angles are not adjacent to each other when viewed from one of the multiple long-axis angles.

[0189] Depending on the embodiment, a direction (diagonal direction) for the reference of the second aperture array corresponding to the red R sub-pixels and the blue B sub-pixels, and a vertical or horizontal direction for the reference of the second aperture array corresponding to the green G sub-pixels, can be applied interchangeably.

[0190] In the following text, reference will be made to Figure 19 and Figures 20A to 20C Various suitable arrangements of the angle of the second opening of the light-shielding layer along its major axis are further described.

[0191] Figure 19 The principal axis direction angle of the second opening of the light-shielding layer corresponding to the red sub-pixel of the first repeating unit pixel provided in the display panel according to the embodiment is shown.

[0192] exist Figure 19 The illustration shows some embodiments in which the second opening of the light-shielding layer corresponding to the red sub-pixel can be alternately provided at four major axis angles (0 degrees, 45 degrees, 90 degrees and 135 degrees).

[0193] exist Figure 19 Of the four columns, the two columns on the left have adjacent 90-degree major axis angles (represented by dotted and slashed lines), and the two columns on the right have 0-degree, 45-degree, or 135-degree major axis angles (represented by dotted and slashed lines) between the 90-degree major axis angles.

[0194] Therefore, it can be confirmed that when the second opening of the light-blocking layer corresponding to the red sub-pixel is as follows... Figure 19 When the arrangement is provided as shown in the two columns on the right, it is possible to have improved external light visibility characteristics.

[0195] In the following text, reference will be made to Figures 20A to 20C Describe the structure of various suitable first repeating unit pixels considering red R sub-pixels, green G sub-pixels, and blue B sub-pixels.

[0196] Figures 20A to 20C The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0197] Figures 20A to 20C A total of 32 embodiments (examples) are illustrated, and the position of the second opening of the light-shielding layer according to the red, green and blue is shown at the angle along the long axis.

[0198] exist Figures 20A to 20COf the 32 embodiments (examples) shown, embodiments in which the second openings of the red and blue light-blocking layers, with an angle of 90 degrees in the long axis direction, are adjacent to each other (e.g., Example 1) may have a relatively high probability of identifying color spots due to reflection of external light. Conversely, embodiments in which the second openings of the red, green, and blue light-blocking layers, with an angle of 90 degrees in the long axis direction, are not adjacent to each other but are spaced at 0 degrees, 45 degrees, or 135 degrees between them, may have a relatively low probability of identifying color spots due to reflection of external light, and for example, Examples 7, 8, 15, 16, 23, 24, 31, and 32 may have a low probability of identifying color spots due to reflection of external light.

[0199] The structure of the first repeating unit pixel, including the first minimum unit pixel, was described above. In the following text, reference will be made to... Figures 21 to 28 The description includes the structure of the second repeating unit pixel, which is the second smallest unit pixel.

[0200] Figures 21 to 26 This shows the repeating unit pixels provided in the display panel.

[0201] First, the description Figure 21 and Figure 22 The second repeating unit pixel.

[0202] Figure 21 The diagram illustrates the planar structure of the second repeating unit pixel, and Figure 22 The table illustrates the angle of the major axis direction of the ellipse for each sub-pixel included in the second repeating unit pixel. In the embodiment, with... Figure 8 The second smallest unit pixel in a 2×2 array provides the second repeating unit pixel. Figure 21 In one embodiment, the second smallest unit pixel is distinguished by a dashed line, and the second smallest unit pixel is distinguished using a green pixel as a reference. However, depending on the embodiment, a red or blue pixel may be used as a reference.

[0203] First, the description will be based on Figure 21 The second repeating unit pixel in the embodiment.

[0204] and Figure 8 The opposite is shown in the image. Figure 21The first openings OPr, OPg, and OPb of the pixel defining layer are not shown; instead, only the second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 are shown. In an embodiment, the first openings OPr, OPg, and OPb provided within the second openings OPBMr, OPBMg, and OPBMb have eccentricities corresponding to the eccentricities of the second openings OPBMr, OPBMg, and OPBMb, and may have elliptical major axis directions that are the same as or similar to the major axis directions of the second openings OPBMr, OPBMg, and OPBMb. Figure 8 Conversely, as shown in Figure 21 In the light-shielding layer 220, the second openings OPBMr, OPBMg, and OPBMb are filled with patterns, and each color is distinguished by a different pattern.

[0205] exist Figure 21 In one embodiment, the second smallest unit pixel constituting the second repeating unit pixel is separated by a dashed line, and it can be confirmed that the second smallest unit pixel is provided in a 2×2 array.

[0206] The four second minimum unit pixels included in the second repeating unit pixel can have different major axis direction angles and / or eccentricities, and the second repeating unit pixels provided in the display area DA can have the same major axis direction angle and eccentricity as the adjacent second repeating unit pixels.

[0207] Included Figure 21 In the embodiment, the second openings OPBMr, OPBMg, and OPBMb of the same color in the second repeating unit pixel have the same eccentricity. In the embodiment, the first openings of the pixel-defined layer of the same color may also have the same eccentricity. In the embodiment, including Figure 21 In the embodiment, the major axis angles of the second openings OPBMr, OPBMg, and OPBMb in the second repeating unit pixel can be one of 0 degrees, 45 degrees, 90 degrees, and 135 degrees, and Figure 21 The diagram also illustrates the major axis angle of the green G sub-pixel. In this embodiment, the major axis angle is arranged in... Figure 22 In the table, and Figure 22 In the diagram, <R> indicates the major axis angle of the red R sub-pixel, <G> indicates the major axis angle of the green G sub-pixel, and indicates the major axis angle of the blue B sub-pixel.

[0208] exist Figure 22 In this context, the major axis angle is written in each cell, and because each second smallest cell pixel includes only one color sub-pixel, Figure 22 The table in the table refers to the angle of the major axis of the corresponding color for the second smallest unit pixel at the corresponding position. For example, in Figure 22In the table, the 0-degree representation provided in the first row and first column of each table representing the red R sub-pixel, green G sub-pixel, and blue B sub-pixel is... Figure 21 The second openings OPBMr, OPBMg, and OPBMb of the second openings OPBMr, OPBMg, and OPBMb in the upper left corner of the light-shielding layer 220 for each of the red R, green G, and blue B sub-pixels are defined by their long-axis angles. For example, it can be confirmed that the second openings OPBMr, OPBMg, and OPBMb corresponding to the sub-pixels of each color in the upper left corner of the four second minimum unit pixels all have an angle of 0 degrees in the long-axis direction. (Reference) Figure 22 It can be confirmed that the following is provided: Figure 21 The second repeating unit pixel of the embodiment is such that all colors included in each second minimum unit pixel are provided with the same major axis direction angle.

[0209] refer to Figure 22 The second openings corresponding to the red R sub-pixel, green G sub-pixel, and blue B sub-pixel respectively have a second opening with a major axis angular difference of 90 degrees and are alternately provided along the horizontal or vertical direction. Among the major axis angular directions of the provided second openings corresponding to the red R sub-pixel, green G sub-pixel, and blue B sub-pixel, the directions of 0 degrees and 90 degrees and 45 degrees and 135 degrees can be alternately provided along the horizontal or vertical direction.

[0210] Figures 23 to 26 Various suitable modifications to the embodiments are illustrated. Figures 23 to 26 For comparison Figure 27 The effect, and Figure 25 and Figure 26 It can be with Figure 21 and Figure 22 The same as the embodiments.

[0211] exist Figure 23 and Figure 25 In the embodiment, the second smallest unit pixel is distinguished by a dashed line, and... Figure 23 and Figure 25 In this embodiment, the second smallest unit pixel is distinguished using a green pixel as a reference. However, depending on the embodiment, a red or blue pixel may be used as a reference.

[0212] Will Figure 23 and Figure 24 Implementation examples and Figure 25 and Figure 26 Comparing the embodiments, in Figure 23 and Figure 24 In one embodiment, the brightest 0 degrees and the darkest 90 degrees are provided adjacent to each other in a diagonal direction, while... Figure 25 and Figure 26 In one embodiment, the brightest 0 degrees and the darkest 90 degrees are provided adjacent to each other in the horizontal direction.

[0213] In the following text, reference will be made to Figure 27 describe Figures 23 to 26 The various suitable embodiments of the second repeating unit pixel shown herein exhibit the external light reflection characteristics according to the variation of eccentricity.

[0214] Figure 27 The characteristics of reflected light from some embodiments are summarized.

[0215] Figure 27 The visibility value described is the difference between the maximum and minimum values ​​of reflected light brightness at a location within the second repeating unit pixel (minimum-maximum contrast). The larger the difference, the more likely the reflected external light will be perceived as a color spot by the user.

[0216] exist Figure 27 In this context, the visibility of external light is determined by the image... Figures 23 to 26 The second repeating unit pixel, which is provided in a 2×2 array as the second smallest unit pixel, simulates the second opening of the light-shielding layer 220 corresponding to the green G sub-pixel by changing the eccentricity value e to 0.55, 0.50 and 0.45, and describes the visibility value according to the simulation. Figure 27 Two different light-emitting display panels were simulated, one with a pixel density of 430 ppi and the other with a pixel density of 264 ppi. In the embodiments, the 430 ppi light-emitting display panel can be used in small electronic devices such as mobile phones, and the 264 ppi light-emitting display panel can be used in medium to large electronic devices such as tablets.

[0217] refer to Figure 27 It can be confirmed that as the eccentricity value e decreases, the visibility value also decreases. Therefore, the smaller the eccentricity value e of the elliptical shape of the opening included in the second repeating unit pixel, the less external light can be detected. The eccentricity value e of the second opening of the light-shielding layer 220 corresponding to the green G sub-pixel can have a value greater than or equal to 0.40 and less than or equal to 0.55, and depending on the embodiment, it can have an eccentricity value e less than 0.40. In the embodiment, the eccentricity value e of the second opening of the light-shielding layer corresponding to the red R sub-pixel and the blue B sub-pixel can also have a value approximately equal to the eccentricity value e of the second opening of the light-shielding layer corresponding to the green G sub-pixel.

[0218] exist Figure 27 In embodiments with the same eccentricity value e, such as Figure 25 and Figure 26 In the embodiments, the long axis angle of the second opening can be greater than that of the second opening. Figure 23 and Figure 24 In the embodiments, more efforts are made to prevent or reduce the identification of reflected color spots from external light.

[0219] refer to Figure 25 and Figure 26 In one embodiment, when viewed from below, the brightest 0 degrees and the darkest 90 degrees are adjacent in the horizontal direction, but not in the diagonal direction. For example, when the darkest angle 90 degrees and the brightest angle 0 degrees are provided in the horizontal direction instead of the diagonal direction, the difference in the reflective properties of external light can appear smaller.

[0220] refer to Figure 22 and Figure 26 The red R sub-pixel, green G sub-pixel, and blue B sub-pixel can be provided with the following major axis angle of the second opening.

[0221] A second opening can be provided corresponding to the red R subpixel, the green G subpixel, and the blue B subpixel, such that when viewed from one of the multiple long-axis directions, the darkest and brightest angles are alternately provided along the vertical or horizontal direction, and the medium brightness angles are alternately provided in another adjacent array along the same vertical or horizontal direction.

[0222] Overall, a second opening is provided corresponding to the red R sub-pixel, the green G sub-pixel, and the blue B sub-pixel, so that the darkest angles when viewed from one of the multiple long-axis angles are not adjacent to each other.

[0223] In the following text, reference will be made to Figure 28 Describe various suitable arrangements of the angle of the second opening of the light-shielding layer along its major axis.

[0224] Figure 28 The principal axis direction angle of the second opening of the light-shielding layer corresponding to a sub-pixel of a second repeating unit pixel in the display panel according to the embodiment is shown.

[0225] Figure 28 Six examples (e.g., embodiments) are shown where the second opening of the light-shielding layer corresponding to the green subpixel is provided alternately at four major axis angles (0 degrees, 45 degrees, 90 degrees and 135 degrees).

[0226] Figure 28 The illustration shows "Example 1" where the brightest 0 degrees and the darkest 90 degrees are adjacent in the diagonal direction when viewed from below, and "Example 2" where the brightest 0 degrees and the darkest 90 degrees are adjacent in the horizontal or vertical direction when viewed from below.

[0227] As in Figure 27As confirmed, “Example 2”, which has the brightest 0 degrees and the darkest 90 degrees placed adjacent to each other in the horizontal direction, has a small difference in the reflective properties of external light and no visible color spots, and therefore has improved visibility properties relative to external light.

[0228] The preceding text describes an embodiment in which the smallest unit pixel is provided in a 2×2 array to form a repeating unit pixel. However, the number of smallest unit pixels can be increased depending on the embodiment, and reference will be made below. Figure 29 An embodiment in which a 4×4 array is provided to form a repeating unit pixel is described.

[0229] Figure 29 The illustration shows repeating unit pixels provided in a display panel according to an embodiment.

[0230] Figure 29 An example is one in which... Figure 8 The same second repeating unit pixel is provided in an embodiment of a 4×4 array.

[0231] and Figure 21 resemblance, Figure 29 The first openings OPr, OPg, and OPb of the pixel-defining layer are not shown; only the second openings OPBMr, OPBMg, and OPBMb of the light-shielding layer 220 are illustrated. In an embodiment, the first openings OPr, OPg, and OPb provided within the second openings OPBMr, OPBMg, and OPBMb have eccentricities corresponding to the eccentricities of the second openings OPBMr, OPBMg, and OPBMb, and may have elliptical major axis directions that are the same as or similar to the major axis directions of the second openings OPBMr, OPBMg, and OPBMb. Figure 29 In, such as Figure 21 As in the example, the second openings OPBMr, OPBMg and OPBMb of the light-shielding layer 220 are filled with patterns, and each color is distinguished by a different pattern.

[0232] exist Figure 29 In one embodiment, the second minimum unit pixel forming the second repeating unit pixel is separated by a dashed line, and it can be confirmed that the second minimum unit pixel is provided in a 4×4 array.

[0233] The 16 second minimum unit pixels included in the second repeating unit pixel can have different major axis direction angles and / or eccentricities, and the second repeating unit pixels in the display area DA can have the same major axis direction angle and eccentricity as the adjacent second repeating unit pixels.

[0234] Included Figure 29In the embodiment, the second openings OPBMr, OPBMg, and OPBMb of the same color in the second repeating unit pixel have the same eccentricity. In the embodiment, the first openings of the pixel-defined layer of the same color may also have the same eccentricity. In the embodiment, including Figure 29 In the embodiments, the angles along the major axis direction of the second repeating unit pixel along the second opening OPBMr, OPBMg, and OPBMb include 0 degrees, 45 degrees, 90 degrees, and 135 degrees, and can be provided at various suitable angles, and the major axis direction can be provided at specific angular intervals. In embodiments, the number of angles in the major axis direction can be 16 or more, and the interval between the major axis direction angles can be less than 22.5 degrees. Figure 29 The second repeating unit pixel of the embodiment is such that all colors included in each second minimum unit pixel have the same major axis direction angle.

[0235] like Figure 29 As shown, reference will be made Figures 30 to 35 The features of an embodiment in which the smallest unit pixel is provided by a 4×4 array are further described.

[0236] Figures 30 to 35 Features of a display panel according to an embodiment are shown.

[0237] First of all, Figures 30 to 32 In this study, the characteristic differences between embodiments provided with a 4×4 array of minimum unit pixels and embodiments provided with a 2×2 array of minimum unit pixels are described by comparing them with comparative examples.

[0238] exist Figure 30 In the simulation, a light-emitting display panel with a pixel count of 264ppi was used as a reference. Figure 30 Comparative examples include embodiments where both the planar shape of the second opening and the planar shape of the first opening are provided as circular (e.g., substantially circular), and embodiments where the smallest unit pixels are provided in a 4×4 array and embodiments where the smallest unit pixels are provided in a 2×2 array have elliptical shapes (e.g., substantially elliptical shapes) with the same eccentricity value. Figure 30 In this context, "a / b" represents the ratio of the minor axis length to the major axis length. Therefore, the difference between the embodiment where the minimum unit pixel is provided in a 4×4 array and the embodiment where the minimum unit pixel is provided in a 2×2 array is the difference in the size of the repeating unit pixel. Figure 30 The “380 taper 32°” indicates a pixel-bound layer (see reference). Figure 6 The side surface of the pixel (380) has a cone angle of 32 degrees relative to the horizontal plane. This is a simulation result under the set cone angle because external light is reflected and detected from the side surface of the pixel-defining layer.

[0239] Figure 31 exist Figure 30 The embodiment also includes an example in which the smallest unit pixel is provided in a 2×2 array.

[0240] exist Figure 32 In the embodiments, with Figure 30 and Figure 31 In contrast to the embodiment shown, some sub-pixels form circular first and / or second openings, rather than elliptical first and / or second openings. In the embodiment, Figure 32 Other embodiments include those where the smallest unit pixel is provided in a 2×2 array, and those simulating a pixel-defining layer including a “380-degree taper at 45°” (see reference). Figure 6 An embodiment in which the cone angle of the side surface of the 380 (380) is 45 degrees relative to the horizontal plane.

[0241] refer to Figure 32 Depending on the embodiment, the second opening or the first opening may have a planar shape other than an ellipse (e.g., generally elliptical), such as a circle (e.g., generally circular). For example, red R and green G may be provided as ellipses (e.g., generally ellipses) and blue B may be provided as a circle (e.g., generally circular), or red R and blue B may be provided as ellipses (e.g., generally ellipses) and green G may be provided as a circle (e.g., generally circular), or green G and blue B may be provided as ellipses (e.g., generally ellipses) and red R may be provided as a circle (e.g., generally circular). In embodiments, depending on the embodiment, it is possible to form two colors as non-elliptical planar shapes (e.g., circular or generally circular) or to form one color as an elliptical planar shape (e.g., generally elliptical planar shape).

[0242] refer to Figure 30 The visibility value in the comparative example is the minimum, but the diffraction pattern is so severe that it is difficult to use a circular opening (e.g., a roughly circular opening). There is no significant difference in diffraction pattern between the embodiment where the minimum unit pixels are provided in a 4×4 array and the embodiment where the minimum unit pixels are provided in a 2×2 array, but the visibility value of the embodiment where the minimum unit pixels are provided in a 4×4 array is larger.

[0243] In the embodiments, in Figure 31 In, such as Figure 30As shown, it can be confirmed that the comparative example has the lowest visibility value, but a strong diffraction pattern, and therefore, forming an elliptical opening (e.g., a substantially elliptical opening) is necessary or useful. In the embodiments, there is no significant difference in diffraction pattern between the embodiment where the minimum unit pixels are provided in a 4×4 array and the embodiment where the minimum unit pixels are provided in a 2×2 array, but the embodiment where the minimum unit pixels are provided in a 4×4 array has a larger visibility value. In the embodiment where the minimum unit pixels are provided in a 2×2 array, it can be confirmed that the diffraction pattern changes with variations in eccentricity, but the difference is not significant.

[0244] exist Figure 32 In this embodiment, the red R sub-pixel and the green G sub-pixel form the first and second openings as ellipses (e.g., approximately ellipses), but the blue B sub-pixel forms the first and second openings as circles (e.g., approximately circles).

[0245] refer to Figure 32 The degree of each diffraction pattern is also expressed numerically, and it can be confirmed that the degree of the diffraction pattern in the comparative example is 14.6, which is greater than the degree of the diffraction patterns in other embodiments, which is 13.4. Figure 32 In all embodiments, the degree of the diffraction pattern is the same because the degree of the diffraction pattern is 13.4 regardless of the number of smallest unit pixels or the difference in eccentricity.

[0246] refer to Figure 32 The visibility values ​​of the 4×4 array embodiment are relatively greater than those of the 2×2 array embodiment. Therefore, it can be confirmed that the 2×2 array embodiment is less likely to have visible spots due to external light than the 4×4 array embodiment.

[0247] In the embodiments, it can be confirmed that, in the same 2×2 array embodiment, the visibility value decreases as the eccentricity decreases. Therefore, the lower the eccentricity value of the elliptical shape of the first and / or second opening, the lower the likelihood that color spots caused by external light will be identified. The eccentricity value of the first and / or second opening can have a value greater than or equal to 0.40 and less than or equal to 0.55, and can have an eccentricity value less than 0.40 depending on the embodiment.

[0248] In the embodiments, in Figure 32 In this context, it can be confirmed that the visibility value increases with the pixel-bound layer (see reference). Figure 6 The cone angle of the side surface of the 380 (in the image) increases and decreases. Therefore, it can be confirmed that the pixel-defining layer (reference) Figure 6 The steeper the side surface of the 380 (in the middle) is provided, the lower the likelihood that the color spots caused by external light will be identified.

[0249] Based on the above, it can be confirmed that the embodiment using repeating unit pixels provided in a 2×2 array, including the smallest unit pixels, is less likely to have visible color spots due to external light than the embodiment using repeating unit pixels provided in a 4×4 array, including the smallest unit pixels.

[0250] In embodiments using repeating unit pixels provided in a 4×4 array, the difference in reflectivity values ​​of external light based on angle can be additionally minimized, reduced, or provided within a set or specific range of values, such that the overall reflectivity characteristics of the external light are similar and the difference in reflectivity of the external light is not perceptible to the user.

[0251] In this regard, we will refer to Figure 33 and Figure 34 The relationship between the angle considering reflectivity and the direction of the second opening is described in more detail.

[0252] exist Figure 33 and Figure 34 The image shows the results of using Light Tools to simulate the reflection characteristics of a second opening OPBMg in a light-shielding layer and a corresponding first opening OPg in a pixel-defining layer, based on an azimuth angle θ. In this embodiment, the azimuth angle θ is an angle measured clockwise from a reference direction (typically 0 degrees (°)) on a horizontal plane, and is the angle measured after projecting a specific angle onto the horizontal plane, as shown in the example. Figure 33 The 0°, 90°, 180° and 270° shown in the figure correspond to each other.

[0253] refer to Figure 33 The second opening OPBMg of the light-shielding layer and the first opening OPg of the pixel-defining layer have a horizontal (0 degrees) major axis direction, and it can be confirmed that, with the azimuth angle θ as a reference, the corresponding reflectivity has the highest reflectivity at 0 degrees and 180 degrees. Therefore, the reflectivity of external light can be maximized in the direction perpendicular (e.g., substantially perpendicular) to the major axis direction of the second opening OPBMg of the light-shielding layer, and the reflectivity of external light can be minimized in the direction parallel (e.g., substantially parallel) to the major axis direction.

[0254] Figure 34 A graph showing reflectivity based on azimuth angle θ is provided, and it can be confirmed that maximum reflectivity occurs at 0 degrees and 180 degrees, and minimum reflectivity occurs at 90 degrees. In the embodiment, Figure 34The graph also shows the change in reflectivity of external light according to the eccentricity value e, and it can be confirmed that as the eccentricity value e of the second opening OPBMg of the light-shielding layer increases, the difference in reflectivity of external light increases. For example, since the reflectivity at a 90-degree azimuth angle increases with the increase of the eccentricity value e relative to the reflectivity at a 0-degree azimuth angle, it can be confirmed that the visibility value, which is the difference between the maximum and minimum reflected brightness (minimum-maximum contrast), also increases.

[0255] like Figure 33 and Figure 34 As shown, after calculating the reflectivity value based on the azimuth angle of the second opening OPBMg of the light-shielding layer, the difference in external light reflectivity values ​​based on the angle is minimized, reduced, or provided within a set or specific range of values, and thus, the total reflectivity of external light is provided as similar and the difference in external light reflectivity is not recognized by the user.

[0256] Therefore, for repeating unit pixels in a 4×4 array with relatively large visibility values, the reflectivity value can be additionally considered, and the angle / eccentricity of the second opening can be adjusted to reduce the difference in reflectivity values, making the reflection of external light invisible.

[0257] In an embodiment, when the difference in reflectance values ​​is set small not only for repeating unit pixels in a 4×4 array but also for repeating unit pixels in a 2×2 array, the difference in reflectance of external light may not be perceptible to the user. Such an embodiment can be applied to both the first and second repeating unit pixels. For example, by according to... Figures 9 to 12 An embodiment provides a first repeating unit pixel, which can be provided with a small difference in reflectance values, and by according to Figure 21 and Figure 22 The embodiments provide a second repeating unit pixel, which may provide a small difference in reflectance values. Furthermore, depending on the embodiment, the eccentricity may be changed, or some openings may be provided as circular (e.g., approximately circular) instead of elliptical.

[0258] Depending on the embodiment, the first opening and / or the second opening may be randomly arranged such that no repeating unit pixels are provided repeatedly within the display area DA. (Refer to...) Figure 35 This will be described in further detail.

[0259] Figure 35 Comparative examples, 2×2 array embodiments, 4×4 array embodiments, random arrangement embodiments, and their reflection characteristics are shown, in which the planar shapes of the second opening and the first opening are both provided as circular (e.g., approximately circular).

[0260] exist Figure 35In the examples, the 2×2 array embodiment, the 4×4 array embodiment, and the randomly arranged embodiment all have the same eccentricity value e. Figure 35 In the 2×2 and 4×4 array embodiments, the repeating unit pixels, which serve as the basis for repetition, are separated by dashed lines. The randomly arranged embodiments do not include dashed lines because there are no repeating unit pixels.

[0261] refer to Figure 35 In the comparative example, the visibility value (minimum-maximum contrast) is the smallest, representing the difference between the maximum and minimum brightness of the reflected light. However, since the planar shapes of both the second and first openings are provided as circular (e.g., approximately circular), the visibility value is as follows: Figure 30 and Figure 31 As shown, there is a problem with strong diffraction patterns, and therefore an embodiment including at least one ellipse is used.

[0262] exist Figure 35 In the randomly arranged embodiment, the visibility value is 0.08, which is less than that of the 4×4 array embodiment and the 2×2 array embodiment. As a result, it can be confirmed that the randomly arranged embodiment is less likely to have visible color spots due to external light than the 4×4 array embodiment and the 2×2 array embodiment.

[0263] The above describes various suitable embodiments and their corresponding effects.

[0264] Representative examples of the various embodiments described above can be summarized in Table 1 below. (Table 1)

[0265]

[0266] Depending on the embodiment, instead of the light-shielding layer 220, at least two of the color filters 230R, 230G, and 230B can form overlapping light-shielding areas of the color filters. Reference will be made below. Figures 36 to 38 An embodiment is described that does not include a light-shielding layer but includes a light-shielding area of ​​at least two overlapping color filters 230R, 230G and 230B.

[0267] First, refer to Figure 36 and Figure 37 , will describe Figure 6 Deformed structure.

[0268] Figure 36 and Figure 37 This is a schematic cross-sectional view of a display panel according to another embodiment.

[0269] In the following text, see references Figure 36 The structure of the light-emitting display panel DP according to the embodiment will be described, and details will be omitted. Figure 6The description of the same part.

[0270] according to Figure 36 The light-emitting display panel DP of the embodiment can form light-emitting diodes on substrate 110 to display images, and includes a plurality of sensing electrodes 540 and 541 for sensing touch and includes color filters 230R, 230G and 230B to have color characteristics of the color filters 230R, 230G and 230B relative to the light emitted from the light-emitting diodes. A light-shielding layer that provides black and blocks visible light may not be provided, and instead of a light-shielding layer, at least two color filters may be overlapped to block visible light.

[0271] The area where at least two color filters overlap to block visible light is called the light-blocking area, and... Figure 36 In this embodiment, the blue filter 230B, the red filter 230R, and the green filter 230G are stacked sequentially. The order in which the filters are stacked may be appropriately changed depending on the embodiment.

[0272] In the embodiment, the polarizing plate is not based on Figure 36 On the front surface of the light-emitting display panel DP in the embodiment, and alternatively, the pixel defining layer 380 is provided with a black organic material, and a light-shielding area in which at least two color filters overlap is provided above the pixel defining layer 380, so that even if external light is incident inside, it is not reflected from the anode and transmitted to the user.

[0273] In this embodiment, color filters 230R, 230G, and 230B are located on the third sensing insulating layer 511. Color filters 230R, 230G, and 230B include a red color filter 230R that transmits red light, a green color filter 230G that transmits green light, and a blue color filter 230B that transmits blue light. Each of the color filters 230R, 230G, and 230B may overlap with the anode of the light-emitting diode (LED) in a plane. Because light emitted from the emissive layer EML can be changed to the corresponding color as it passes through the color filters, all light emitted from the emissive layer EML can have the same color. In this embodiment, the emissive layer EML can display different colors of light and enhance the displayed color by allowing light to pass through color filters of the same color.

[0274] Depending on the embodiment, color filters 230R, 230G, and 230B may be replaced by a color conversion layer, or may further include a color conversion layer. The color conversion layer may include quantum dots.

[0275] exist Figure 36 In this embodiment, a black-based light-blocking layer to block visible light (or reduce visible light transmission) is not provided, and instead of a light-blocking layer, the light-blocking area is provided by overlapping at least two color filters, thereby replacing the light-blocking layer. Figure 36In this embodiment, blue filter 230B, red filter 230R, and green filter 230G are stacked sequentially in the light-shielding area. The order in which the filters are stacked may vary depending on the embodiment.

[0276] The light-shielding area, which overlaps at least two color filters, can overlap with sensing electrodes 540 and 541 on a plane, but can not overlap with the anode on a plane. This is to prevent the anode and the light-emitting layer EML, which can display images, from being obscured by the light-shielding area and sensing electrodes 540 and 541.

[0277] refer to Figure 36 The light-shielding area of ​​the color filter, in which three color filters overlap, is provided only in the area on the plane that overlaps with the pixel limiting layer 380, and one side of the light-shielding area of ​​the color filter is provided inward from the corresponding side of the pixel limiting layer 380.

[0278] Only one color filter can be provided in the area excluding the light-shielding area, and light of the color corresponding to the color filter is transmitted to form the light-transmitting area of ​​the color filter. Hereinafter, because light passes through the light-transmitting area of ​​a color filter that provides only one color filter, the light-transmitting area is also referred to as the second opening OPCF of the light-shielding area. The second opening OPCF of the light-shielding area is an opening provided in the light-shielding area where at least two color filters overlap, and can correspond to the area where only one color filter is provided. In an embodiment, the second opening OPCF of the light-shielding area of ​​the color filter can correspond to the second opening OPBM of the aforementioned light-shielding layer 220.

[0279] The area of ​​the second opening OPCF in the light-shielding area is provided to be larger than the opening OP of the pixel limiting layer 380, and in the plane, the opening OP of the pixel limiting layer 380 can be provided within the second opening OPCF in the light-shielding area.

[0280] In this embodiment, one side of the spacer 385 is provided inwardly from the corresponding side of the pixel defining layer 380 by a predetermined or specific distance g1, and the spacer 385 is also provided inwardly relative to the side of the light-shielding area. As a result, when viewed from the front of the display panel DP, the spacer 385 may be invisible due to the light-shielding area.

[0281] When external light is incident, it can pass through the second opening OPCF of the light-shielding area of ​​the color filter and then be reflected from the sidewalls of the opening OP of the pixel-defining layer 380. The sidewalls of the opening OP of the pixel-defining layer 380 are curved, and therefore, color separation occurs depending on the reflection position, and the color of the reflected light can be represented by a variety of suitable colors, like a rainbow. Because this color-separated reflected light can be easily seen by the user and lead to a degradation of display quality, therefore... Figure 6In some embodiments, the second opening OPBM of the light-shielding layer 220 can be replaced by the second opening OPCF of the light-shielding area of ​​the color filter. For example, at least one of the second opening OPCF of the light-shielding area of ​​the color filter and the opening OP of the pixel defining layer 380 is provided as an ellipse (e.g., approximately elliptical), and the orientation or eccentricity of the ellipse is arranged in various suitable ways to reduce color separation or allow white reflected light to be identified. Depending on the embodiment, at least one of the second opening OPCF of the light-shielding area of ​​the color filter and the opening OP of the pixel defining layer 380 can be provided as having a shape similar to an ellipse instead of an ellipse, and its orientation or eccentricity can be changed in various suitable ways. In embodiments, various suitable modifications to the second opening OPBM of the light-shielding layer 220 and the corresponding opening OP of the pixel defining layer 380 described above can also be applied to the second opening OPCF of the light-shielding area of ​​the color filter and the opening OP of the pixel defining layer 380.

[0282] A planarization layer 550 covers color filters 230R, 230G, and 230B. The planarization layer 550 is used to planarize the upper surface of the light-emitting display panel DP and may be a transparent organic insulator comprising one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0283] Depending on the embodiment, a low-refractive-index layer and an additional planarization layer may be present on planarization layer 550 to improve the front visibility and light output efficiency of the display panel. Light can be refracted and emitted forward by the additional planarization layer, which has both low and high refractive index characteristics. In this embodiment, depending on the embodiment, planarization layer 550 may be omitted, and the low-refractive-index layer and the additional planarization layer may be present directly on color filters 230R, 230G, and 230B.

[0284] In this embodiment, the polarizing plate may not be included above the planarization layer 550. For example, the polarizing plate can be used to prevent or reduce display quality degradation when external light is incident and reflected from the sidewalls of the opening OP of the anode and / or pixel defining layer 380 while remaining visible to the user. Because the polarizing plate reduces not only the reflection of external light but also the light emitted from the emissive layer EML, it has the disadvantage of consuming more power to display a set or specific brightness. To reduce power consumption, the light-emitting display device according to this embodiment may not include a polarizing plate.

[0285] In this embodiment, the pixel defining layer 380 covers the side surface of the anode to reduce the amount of reflection from the anode and provides a light-shielding area in which at least two color filters overlap to reduce the amount of incident light, thus including a structure to prevent degradation of display quality due to reflection. Therefore, it is not necessary to form a polarizing plate separately on the front surface of the light-emitting display panel DP.

[0286] exist Figure 36 In one embodiment, a light-shielding area overlapping at least two color filters is described, provided by overlapping three color filters. Depending on the embodiment, such as Figure 37 As shown, two color filters can be overlapped to form the light-shielding area of ​​the color filter.

[0287] Figure 37 Is with Figure 6 and Figure 36 Corresponding diagram and with Figure 36 The only differences are in the color filters 230R, 230G, and 230B, and the structure below the third sensing insulating layer 511 is the same as... Figure 36 Same. The following text will primarily describe the differences. Figure 36 The structure above the third sensing insulating layer 511.

[0288] refer to Figure 37 No light-blocking layer is provided, and the blue color filter 230B and the red color filter 230R are stacked sequentially to block visible light. The order in which the color filters are stacked may be appropriately changed depending on the embodiment.

[0289] In this embodiment, the overlapping light-shielding area of ​​the two color filters is the area where the blue color filter 230B and the red color filter 230R overlap, and some areas of the light-shielding area of ​​the color filters also have portions overlapping with the green color filter 230G. Figure 37 In the embodiments, with Figure 36 Unlike other embodiments, the green color filter 230G is not provided in the entire light-shielding area of ​​the color filter, and therefore, only two color filters are provided in the light-shielding area of ​​the color filter. The light-shielding area overlapping the two color filters is only provided in the area that overlaps with the pixel defining layer 380 on the plane, and one side of the light-shielding area of ​​the color filter is provided inward from the corresponding side of the pixel defining layer 380.

[0290] Only one color filter can be provided in the area other than the light-shielding area of ​​the color filter, and light of the corresponding color of the color filter is transmitted, such that a second opening OPCF is provided in the light-transmitting area or the light-shielding area of ​​the color filter. The area of ​​the second opening OPCF is provided to be larger than the opening OP of the pixel defining layer 380, and in the plane, the opening OP of the pixel defining layer 380 can be provided within the second opening OPCF of the light-shielding area of ​​the color filter.

[0291] The light-shielding area of ​​the color filter overlaps with the pixel defining layer 380, the spacer 385, and the plurality of sensing electrodes 540 and 541 on a plane. In an embodiment, the light-shielding area of ​​the color filter is provided from one side of the spacer 385, inwardly at a specific distance g1 relative to the corresponding side of the pixel defining layer 380, and the spacer 385 is also provided inwardly relative to one side of the light-shielding area of ​​the color filter. In an embodiment, the plurality of sensing electrodes 540 and 541 are also covered on a plane by the light-shielding area of ​​the color filter. As a result, when viewed from the front of the light-emitting display panel DP, the spacer 385 and the plurality of sensing electrodes 540 and 541 are not visible due to the light-shielding area of ​​the color filter.

[0292] Depending on the embodiment, color filters 230R, 230G, and 230B may be replaced by a color conversion layer, or may further include a color conversion layer. The color conversion layer may include quantum dots.

[0293] In the following text, it will be through Figure 38 Describe whether stacking two color filters can replace the function of a light-blocking layer.

[0294] Figure 38 It is a graph showing the transmittance according to the wavelength of the color filter.

[0295] Figure 38 This is a transmittance graph for each of the color filters 230R, 230G, and 230B, showing the wavelengths of light transmitted, indicated by high levels. (Reference) Figure 38 It can be seen that the wavelengths transmitted by individual color filters 230R, 230G, and 230B have a transmittance of less than 10%, and when three or two color filters are overlapped, there are almost no transmitted wavelengths. Therefore, it can be confirmed that overlapping at least two color filters can replace the function of a light-shielding layer, and as... Figure 36 Three color filters overlapped as in the middle, or like... Figure 37 Two overlapping color filters, as shown in the example, can replace a light-blocking layer.

[0296] In the following text, see references Figure 39 and Figure 40 The stacking structure of the display area DA and the first component area EA1 will be described in more detail.

[0297] Figure 39 and Figure 40 This is a cross-sectional view of a light-emitting display device according to an embodiment.

[0298] Figure 39 An embodiment including a light-shielding layer 220 is illustrated, and Figure 40 The illustration shows an embodiment in which the light-shielding area of ​​the filter is provided by overlapping a blue filter 230B and a red filter 230R instead of a light-shielding layer 220.

[0299] First, a more detailed description will follow. Figure 39 Examples of implementations.

[0300] The light-emitting display device can be divided into a lower panel layer and an upper panel layer. The lower panel layer provides light-emitting diodes (LEDs) and pixel circuitry forming pixels and may include an encapsulation layer 400 covering the LEDs and pixel circuitry. In an embodiment, the pixel circuitry includes a second organic layer 182 and a third organic layer 183, referring to the lower portion of the pixel circuitry. The LEDs may refer to a configuration provided above the third organic layer 183 and below the encapsulation layer 400. The configuration provided above the encapsulation layer 400 may correspond to the upper panel layer.

[0301] refer to Figure 39 The metal layer BML is on the substrate 110.

[0302] The substrate 110 may comprise a rigid, non-bending material such as glass or a flexible, bendable material such as plastic (e.g., polymer) and / or polyimide. In embodiments of the flexible substrate, such as... Figure 39 As shown, it can have a dual structure provided by a two-layer structure of polyimide and a barrier layer thereon formed of an inorganic insulating material (e.g., an inorganic electrical insulating material).

[0303] The metal layer BML can be provided at a location overlapping the channel of the driving transistor in the subsequent first semiconductor layer, and is also referred to as the lower shielding layer. The metal layer BML can include metals and / or metal alloys such as copper (Cu), molybdenum (Mo), aluminum (Al), and titanium (Ti).

[0304] A buffer layer 111 covers the substrate 110 and the metal layer BML. The buffer layer 111 serves to block or reduce the penetration of impurity elements into the first semiconductor layer ACT (P-Si), and may contain silicon oxide (SiO2). x ) and / or silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y Inorganic insulating layers such as )

[0305] A first semiconductor layer ACT (P-Si) formed of silicon semiconductor (e.g., polycrystalline semiconductor (P-Si)) is provided on buffer layer 111. The first semiconductor layer ACT (P-Si) includes a channel of a polycrystalline transistor LTPS TFT containing a driving transistor and a first region and a second region provided on both sides of the channel. In embodiments, the polycrystalline transistor LTPS TFT may include not only the driving transistor but also various suitable transistors such as switching transistors and / or compensation transistors. In embodiments, regions having conductive layer characteristics (e.g., conductive layer characteristics) through plasma treatment and / or doping may be formed on both sides of the channel of the first semiconductor layer ACT (P-Si) and may therefore serve as the first and second electrodes of the transistor.

[0306] The first gate insulating layer 141 may be on the first semiconductor layer ACT (P-Si). The first gate insulating layer 141 may include silicon oxide (SiO2). x Silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y Inorganic insulating layer.

[0307] A first gate conductive layer GAT1, including the gate electrode of the polycrystalline transistor LTPS TFT, may be located on the first gate insulating layer 141. In addition to the gate electrode of the polycrystalline transistor LTPS TFT, the first gate conductive layer GAT1 may further provide first scan lines and / or light emission control lines. The first gate conductive layer GAT1 may comprise a metal and / or metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may be formed from a single layer or multiple layers.

[0308] After the first gate conductive layer GAT1 is formed, the exposed regions of the first semiconductor layer ACT (P-Si) can be made conductive (e.g., electrically conductive) by performing plasma processing and / or doping processes. For example, the first semiconductor layer ACT (P-Si) covered by the first gate conductive layer GAT1 is not conductive (e.g., electrically conductive), and the portions of the first semiconductor layer ACT (P-Si) not covered by the first gate conductive layer GAT1 can have the same properties as the conductive layer.

[0309] The second gate insulating layer 142 may be on the first gate conductive layer GAT1 and the first gate insulating layer 141. The second gate insulating layer 142 may include silicon oxide (SiO2). x Silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y Inorganic insulating layer.

[0310] A second gate conductive layer, including an electrode GAT2 (Cst) of the storage capacitor Cst and a lower shielding layer GAT2 (BML) of the oxide transistor TFT, may be located on the second gate insulating layer 142. The lower shielding layer GAT2 (BML) of the oxide transistor TFT is provided at the bottom of each channel of the oxide transistor TFT and can be used to shield against light or electromagnetic interference (EMI) supplied from the bottom to the channel. In an embodiment, the electrode GAT2 (Cst) of the storage capacitor Cst is formed by overlapping with the gate electrode of the driving transistor. Depending on the embodiment, the second gate conductive layer may further include scan lines, control lines, and / or voltage lines. The second gate conductive layer may include a metal and / or metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti) and may be formed from a single layer or multiple layers.

[0311] The first interlayer insulating layer 161 may be on the second gate conductive layer. The first interlayer insulating layer 161 may include silicon oxide (SiO2). x Silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y The inorganic insulating layer may be provided as thick, depending on the embodiment.

[0312] The oxide semiconductor layer ACT2 (IGZO), including the channel of the oxide TFT, the first region and the second region, can be on the first interlayer insulating layer 161.

[0313] The third gate insulating layer 143 may be on the oxide semiconductor layer ACT2 (IGZO). The third gate insulating layer 143 may be on the front surface of the oxide semiconductor layer ACT2 (IGZO) and the first interlayer insulating layer 161. The third gate insulating layer 143 may include silicon oxide (SiO2). x Silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y Inorganic insulating layer.

[0314] A third gate conductive layer GAT3, including the gate electrode of the oxide transistor TFT, may be located on the third gate insulating layer 143. The gate electrode of the oxide transistor TFT may overlap with the channel. The third gate conductive layer GAT3 may further include scan lines and / or control lines, and may additionally include connection electrodes connected to the lower shielding layer GAT2 (BML) of the oxide transistor TFT. The third gate conductive layer GAT3 may include metals and / or metal alloys such as copper (Cu), molybdenum (Mo), aluminum (Al), or titanium (Ti), and may be formed from a single layer or multiple layers.

[0315] The second interlayer insulating layer 162 may be on the third gate conductive layer GAT3. The second interlayer insulating layer 162 may have a single-layer or multi-layer structure. Depending on the embodiment, the second interlayer insulating layer 162 may include, for example, silicon oxide (SiO2). x Silicon nitride (SiN) x ) and / or silicon oxynitride (SiO) x N y The inorganic insulating material (e.g., inorganic electrical insulating material) and / or may include organic insulating materials (e.g., organic electrical insulating material) depending on the embodiment.

[0316] A first data conduction layer SD1, including connection electrodes that can be connected to the first and second regions of each of the polycrystalline transistor LTPS TFT and the oxide transistor Oxide TFT, may be on the second interlayer insulating layer 162. The first data conduction layer SD1 may include metals and / or metal alloys such as copper (Cu), molybdenum (Mo), aluminum (Al) and / or titanium (Ti), and may be formed from a single layer or multiple layers.

[0317] The first organic layer 181 may be on the first data transmission layer SD1. The first organic layer 181 may be an organic insulator comprising organic materials, and the organic materials may include materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene and phenolic resin.

[0318] A second data conductive layer, including the anode connection electrode ACM2, may be on the first organic layer 181. The second data conductive layer may include data lines and / or drive voltage lines. The second data conductive layer may include metals and / or metal alloys such as aluminum (Al), copper (Cu), molybdenum (Mo), and / or titanium (Ti), and may be formed from a single layer or multiple layers.

[0319] The second organic layer 182 and the third organic layer 183 are located on the second data conduction layer, and an anode connection opening OP4 is provided in the second organic layer 182 and the third organic layer 183. The anode connection electrode ACM2 is electrically connected to the anode Anode through the anode connection opening OP4. The second organic layer 182 and the third organic layer 183 may be organic insulators (e.g., organic electrical insulators) and may comprise one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin. Depending on the embodiment, the third organic layer 183 may be omitted.

[0320] A pixel defining layer 380, covering at least a portion of the anode (OP) while including the exposed anode, may be present on the anode. The pixel defining layer 380 may be a black pixel defining layer formed of a black organic material to prevent or reduce the reflection of externally applied light back to the outside, and may be formed of a transparent organic material depending on the embodiment. Therefore, depending on the embodiment, the pixel defining layer 380 may include a negatively black organic material and may include a black pigment.

[0321] Spacer 385 is located on pixel defining layer 380. Spacer 385 may include a first portion 385-1 provided in a high and narrow region and a second portion 385-2 provided in a low and wide region. Unlike pixel defining layer 380, spacer 385 may be formed of a transparent organic insulating material (e.g., a transparent organic electrical insulating material). Depending on the embodiment, spacer 385 may be formed of a positive (or similar) transparent organic material.

[0322] The functional layer FL and the cathode are sequentially located on the anode, and the functional layer FL and the cathode can be provided in all areas of the display area DA and the first component area EA1. The light-emitting layer EML is located between the functional layers FL, and the light-emitting layer EML can be provided only within the opening OP of the pixel defining layer 380. Hereinafter, the functional layer FL and the light-emitting layer EML can be combined to form an intermediate layer. The functional layer FL may include at least one layer such as an electron injection layer, an electron transport layer, a hole transport layer, and an auxiliary layer of a hole injection layer, and the hole injection layer and the hole transport layer can be provided below the light-emitting layer EML, and the electron transport layer and the electron injection layer can be provided above the light-emitting layer EML.

[0323] Encapsulation layer 400 is on the cathode. Encapsulation layer 400 includes at least one inorganic layer and at least one organic layer, and depending on the embodiment, encapsulation layer 400 may have a three-layer structure including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. Encapsulation layer 400 can be provided to protect the light-emitting layer (EML) from moisture and / or oxygen that may enter from the outside. Depending on the embodiment, encapsulation layer 400 may include a structure in which the inorganic layer and the organic layer are further sequentially stacked.

[0324] On the encapsulation layer 400, sensing insulating layers 501, 510, and 511, as well as multiple sensing electrodes 540 and 541, are provided to sense touch. Figure 39 In one embodiment, two sensing electrodes 540 and 541 are used to detect touch in terms of capacitance type (or type).

[0325] In an embodiment, a first sensing insulating layer 501 is on the encapsulation layer 400, and a plurality of sensing electrodes 540 and 541 are on the first sensing insulating layer 501. The plurality of sensing electrodes 540 and 541 may be insulated from each other (e.g., electrically insulated) while a second sensing insulating layer 510 is provided between them, and may be electrically connected to each other by providing openings in the second sensing insulating layer 510. In an embodiment, the sensing electrodes 540 and 541 may comprise metals and / or metal alloys thereof such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), molybdenum (Mo), titanium (Ti), and / or tantalum (Ta), and may be formed of a single layer or multiple layers. A third sensing insulating layer 511 is on the sensing electrode 540.

[0326] The light-shielding layer 220 and the color filter 230 are on the third sensing insulating layer 511.

[0327] The light-shielding layer 220 can be provided to overlap with the sensing electrodes 540 and 541 in a plane. The light-shielding layer 220 includes a second opening OPBM, and the second opening OPBM of the light-shielding layer 220 overlaps in a plane with the opening OP of the pixel defining layer 380. In an embodiment, the second opening OPBM of the light-shielding layer 220 can be provided to be wider than the opening OP of the pixel defining layer 380. As a result, the anode overlapping with (e.g., exposed by) the opening OP of the pixel defining layer 380 can have a structure that is not covered in a plane by the light-shielding layer 220. This is to ensure that the anode and the light-emitting layer EML, which can display images, are not covered by the light-shielding layer 220 and the sensing electrodes 540 and 541. In an embodiment, the light-shielding layer 220 has a structure that overlaps in a plane with the anode connection opening OP4 but does not overlap in a plane with the opening OP3 of the first organic layer 181.

[0328] Color filter 230 is located on sensing insulating layers 501, 510, and 511 and light-shielding layer 220. Depending on the embodiment, color filter 230 may be replaced by a color conversion layer, or may further include a color conversion layer. The color conversion layer may include quantum dots.

[0329] A planarization layer 550 covering the color filter 230 may be present on the color filter 230. Depending on the embodiment, a low-refractive-index layer and an additional planarization layer may be present on the planarization layer 550 to improve the front visibility and light output efficiency of the display device. Light can be refracted and emitted forward by the additional planarization layer, which has both low and high refractive index characteristics. Depending on the embodiment, the planarization layer 550 may be omitted, and the low-refractive-index layer and the additional planarization layer may be present directly on the color filter 230.

[0330] In this embodiment, the polarizing plate may not be included above the planarization layer 550. For example, the polarizing plate can be used to prevent or reduce display quality degradation when external light is incident and visible to the user while being reflected from the anode, etc. In this embodiment, the pixel defining layer 380 covers the side surface of the anode to reduce the amount of reflection from the anode and also provides a light-shielding layer 220 to reduce the amount of incident light, thus already including a structure to prevent or reduce display quality degradation due to reflection. Therefore, it is not necessary to form a polarizing plate separately on the front surface of the display panel DP.

[0331] exist Figure 39 In addition to the stacked structure of the display area DA, the diagram also illustrates the cross-sectional structure of the first component area EA1, in which light can be further transmitted through a portion of the display area DA.

[0332] exist Figure 39 In this embodiment, the first component region EA1 is divided into a first optical sensor region OPS1 (referred to as a transmissive optical sensor region) and a second optical sensor region OPS2 (referred to as a non-transmissive optical sensor region). In this embodiment, additional openings OP-1 and OPBM-1 are respectively provided in the first optical sensor region OPS1 to prevent or reduce overlap with the pixel defining layer 380 and the light-shielding layer 220 on the plane, allowing light to pass through the first optical sensor region OPS1. The second optical sensor region OPS2 is provided to overlap with the pixel defining layer 380 and the light-shielding layer 220 on the plane, preventing light from passing through it. Both the first optical sensor region OPS1 and the second optical sensor region OPS2 of the first component region EA1 may not include light-blocking layers such as metal layers or semiconductor layers. For reference, the first optical element ES1 (reference...) Figure 2 On the rear surface of the first component region EA1, and on the front surface of the light-emitting display device, the first optical sensor region OPS1 in the first component region EA1 can be detected.

[0333] The hierarchical structure of the first component region EA1 will be further described below.

[0334] A buffer layer 111, which is an inorganic insulating layer, is provided on the substrate 110, and a first gate insulating layer 141 and a second gate insulating layer 142, which are inorganic insulating layers (e.g., inorganic electrical insulating layers), are sequentially provided. In an embodiment, a first interlayer insulating layer 161, a third gate insulating layer 143, and a second interlayer insulating layer 162, which are inorganic insulating layers (e.g., inorganic electrical insulating layers), are sequentially stacked on the second gate insulating layer 142.

[0335] A first organic layer 181, a second organic layer 182, and a third organic layer 183, which are organic insulators (e.g., organic electrical insulators), are sequentially stacked on a second interlayer insulating layer 162.

[0336] The functional layer FL can be on the third organic layer 183, and the cathode Cathode can be on the functional layer FL.

[0337] Encapsulation layer 400 is on the cathode, and sensing insulating layers 501, 510, and 511 are on encapsulation layer 400. Encapsulation layer 400 may have a three-layer structure comprising an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer in sequence. In an embodiment, sensing insulating layers 501, 510, and 511 may all be inorganic insulating layers (e.g., inorganic electrical insulating layers).

[0338] The planarization layer 550 can be on the sensing insulating layers 501, 510 and 511.

[0339] In this first component region EA1, the metal layer BML, the first semiconductor layer ACT (P-Si), the first gate conductive layer GAT1, the second gate conductive layer, the oxide semiconductor layer ACT2 (IGZO), the third gate conductive layer GAT3, the first data conductive layer SD1, the second data conductive layer, and the anode are not provided. In this embodiment, the light-emitting layer EML and the sensing electrodes 540 and 541 are not provided.

[0340] In an embodiment, in the first optical sensor region OPS1 of the first component region EA1, additional openings OP-1 and OPBM-1 are provided in the pixel defining layer 380 and the light-shielding layer 220, respectively, so that the pixel defining layer 380 and the light-shielding layer 220 may not be provided. As a result, light can pass through the first optical sensor region OPS1. The second optical sensor region OPS2 in the first component region EA1 may have a structure in which light is not transmitted because the additional openings OP-1 and OPBM-1 are not provided and it overlaps with the pixel defining layer 380 and the light-shielding layer 220.

[0341] The foregoing described an embodiment in which a total of three organic layers are provided and the anode connection opening is provided in the second and third organic layers. However, at least two organic layers may be provided, in which case the anode connection opening may be provided in the upper organic layer away from the substrate and the lower organic layer opening may be provided in the lower organic layer.

[0342] In the following text, refer to Figure 40 An embodiment in which the light-shielding area of ​​the filter is provided by overlapping a blue filter 230B and a red filter 230R instead of a light-shielding layer 220 will be described.

[0343] exist Figure 40 In the middle, the third sensing insulating layer 511 and the structure below the third sensing insulating layer 511 are similar to Figure 39 The structure is the same, and therefore, it will be described in more detail as being similar to... Figure 39 The structure above the third sensing insulating layer 511 in different parts.

[0344] Color filters 230R, 230G, and 230B are located on the third sensing insulating layer 511. Figure 40 In this embodiment, no light-shielding layer is included, and the overlapping color filters 230R and 230B act as light-shielding layers, and the overlapping color filters 230R and 230B can overlap with the sensing electrodes 540 and 541 in a plane. The overlapping color filters 230R and 230B include a second opening OPCF, and the second opening OPCF of the overlapping color filters 230R and 230B overlaps with the opening OP of the pixel defining layer 380 in a plane. In this embodiment, the second opening OPCF of the overlapping color filters 230R and 230B can be provided to be wider than the opening OP of the pixel defining layer 380. As a result, the anode that overlaps with the opening OP of the pixel defining layer 380 (e.g., is exposed by the opening OP of the pixel defining layer 380) can have a structure that is not covered in a plane by the overlapping color filters 230R and 230B. This is to prevent the anode and the light-emitting layer (EML) that can display images from being covered by the overlapping color filters 230R and 230B, as well as the sensing electrodes 540 and 541. In this embodiment, the overlapping color filters 230R and 230B overlap with the anode connection opening OP4 in a plane.

[0345] A color filter can be provided in the second opening OPCF of the overlapping color filters 230R and 230B, and... Figure 40 In this embodiment, a green color filter 230G is provided. Depending on the embodiment, color filters 230R, 230G, and 230B may be replaced by a color conversion layer, or may further include a color conversion layer. The color conversion layer may include quantum dots.

[0346] A planarization layer 550 covering color filters 230R, 230G, and 230B may be present on color filters 230R, 230G, and 230B. Depending on the embodiment, a low-refractive-index layer and an additional planarization layer may be present on the planarization layer 550 to improve the front visibility and light output efficiency of the display device. Depending on the embodiment, the planarization layer 550 may be omitted, and the low-refractive-index layer and the additional planarization layer may be present directly on the color filters.

[0347] exist Figure 40 In this embodiment, a polarizing plate is not included above the planarization layer 550. For example, a polarizing plate can be used to prevent or reduce display quality degradation when external light is incident and visible to the user while being reflected from the anode, etc. In this embodiment, the pixel defining layer 380 covers the side surface of the anode to reduce the amount of reflection from the anode and also provides overlapping color filters 230R and 230B to reduce the amount of incident light, thus already including a structure to prevent or reduce display quality degradation due to reflection. Therefore, it is not necessary to form a polarizing plate separately on the front surface of the display panel DP.

[0348] according to Figure 40 The cross-sectional structure of the first component region EA1 in the embodiment will be the same as described below.

[0349] The first component region EA1 is divided into a first optical sensor region OPS1 and a second optical sensor region OPS2. Here, the first optical sensor region OPS1 is a region provided with additional openings OP-1 and OPCF-1 respectively to allow light to pass through without overlapping the light-shielding areas of the pixel defining layer 380 and the color filters provided by overlapping at least two color filters on the plane. The second optical sensor region OPS2 is a region provided to prevent light from passing through by overlapping the light-shielding areas of the pixel defining layer 380 and the color filters provided by overlapping at least two color filters on the plane. Neither the first optical sensor region OPS1 nor the second optical sensor region OPS2 of the first component region EA1 may include light-blocking layers such as metal layers and / or semiconductor layers. For reference, the first optical element ES1 (reference...) Figure 2 On the rear surface of the first component region EA1, and on the front surface of the light-emitting display device, the first optical sensor region OPS1 in the first component region EA1 can be detected.

[0350] The layered structure of the first component region EA1 will be described below.

[0351] A buffer layer 111 for an inorganic insulating layer (e.g., an inorganic electrical insulating layer) is provided on the substrate 110, and a first gate insulating layer 141 and a second gate insulating layer 142 for an inorganic insulating layer (e.g., an inorganic electrical insulating layer) are sequentially provided. In an embodiment, a first interlayer insulating layer 161, a third gate insulating layer 143, and a second interlayer insulating layer 162 for an inorganic insulating layer (e.g., an inorganic electrical insulating layer) are sequentially stacked on the second gate insulating layer 142.

[0352] A first organic layer 181, a second organic layer 182, and a third organic layer 183, which are organic insulators (e.g., organic electrical insulators), are sequentially stacked on a second interlayer insulating layer 162.

[0353] The functional layer FL can be on the third organic layer 183, and the cathode Cathode can be on the functional layer FL.

[0354] Encapsulation layer 400 is on the cathode, and sensing insulating layers 501, 510, and 511 are on encapsulation layer 400. Encapsulation layer 400 may have a three-layer structure comprising an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer in sequence. In an embodiment, sensing insulating layers 501, 510, and 511 may all be inorganic insulating layers.

[0355] The planarization layer 550 can be on the sensing insulating layers 501, 510 and 511.

[0356] In this first component region EA1, the metal layer BML, the first semiconductor layer ACT (P-Si), the first gate conductive layer GAT1, the second gate conductive layer, the oxide semiconductor layer ACT2 (IGZO), the third gate conductive layer GAT3, the first data conductive layer SD1, the second data conductive layer, and the anode are not provided. In this embodiment, the light-emitting layer EML and the sensing electrodes 540 and 541 are not provided.

[0357] In an embodiment, in the first optical sensor region OPS1 of the first component region EA1, additional openings OP-1 and OPCF-1 are provided in the light-shielding areas of the pixel defining layer 380 and the color filter, respectively, so that the pixel defining layer 380 and the color filter may not be provided. As a result, light can pass through the first optical sensor region OPS1. The second optical sensor region OPS2 in the first component region EA1 may have a structure in which light is not transmitted because the additional openings OP-1 and OPCF-1 are not provided and overlap with the light-shielding areas of the pixel defining layer 380 and the color filter.

[0358] The foregoing described an embodiment in which a total of three organic layers are provided and an anode connection opening is provided in the second and third organic layers. In the embodiment, at least two organic layers may be provided, wherein the anode connection opening may be provided in the upper organic layer remote from the substrate and the lower organic layer opening may be provided in the lower organic layer.

[0359] Although embodiments of the present disclosure have been described in more detail above, the scope of the present disclosure is not limited thereto, and various suitable modifications and alterations made by those skilled in the art using the concept of the present disclosure as defined in the claims and their equivalents also fall within the scope of the present disclosure.

Claims

1. A light-emitting display device comprising a display area that repeatedly provides a plurality of repeating unit pixels, The repeating unit pixel includes multiple smallest unit pixels. The smallest unit pixel includes at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel. The green sub-pixel, the red sub-pixel, and the blue sub-pixel correspond to a first opening provided in the pixel definition layer and a second opening provided above the first opening while corresponding to the first opening. At least one of the first opening and the second opening has an elliptical shape in planar shape, and The repeating unit pixel is formed by the smallest unit pixel provided in a 2×2 array.

2. The light-emitting display device according to claim 1, wherein: The smallest unit pixel is formed by four green sub-pixels from the green sub-pixels, two red sub-pixels from the red sub-pixels, and two blue sub-pixels from the blue sub-pixels.

3. The light-emitting display device according to claim 2, wherein: The first square is formed by connecting the four green sub-pixels with horizontal and vertical lines, and the second square is formed by connecting the two red sub-pixels and the two blue sub-pixels with horizontal and vertical lines.

4. The light-emitting display device according to claim 3, wherein: The red sub-pixel or the blue sub-pixel is provided at the center of the first square formed by the four green sub-pixels, and the green sub-pixel is provided at the center of the second square formed by the two red sub-pixels and the two blue sub-pixels.

5. The light-emitting display device according to claim 4, wherein: The first opening and the second opening, each corresponding to the green sub-pixel, the red sub-pixel, and the blue sub-pixel, respectively, have an elliptical shape in planar shape, and The major axis of the second opening has an angular difference of 45×n degrees from the major axis of the adjacent second opening of the same color, where n is a natural number greater than or equal to 1 and less than or equal to 8.

6. The light-emitting display device according to claim 5, wherein: In the repeating unit pixel, the second opening corresponding to the red sub-pixel and the second opening corresponding to the blue sub-pixel have a 90-degree angle difference along their major axis and are alternately provided along a single diagonal direction.

7. The light-emitting display device according to claim 6, wherein: In the repeating unit pixel, the major axis direction of the second opening corresponding to the red sub-pixel and the second opening corresponding to the blue sub-pixel is provided alternately along a single diagonal direction at 0 degrees and 90 degrees and 45 degrees and 135 degrees.

8. The light-emitting display device according to claim 7, wherein: In the repeating unit pixel, in the second opening corresponding to the green sub-pixel, the second opening having a 90-degree difference in the long axis direction is alternately provided along the horizontal or vertical direction.

9. The light-emitting display device according to claim 8, wherein: In the repeating unit pixel, the long axis angle of the second opening corresponding to the green sub-pixel is provided alternately in the horizontal direction and the vertical direction at 0 degrees and 90 degrees and 45 degrees and 135 degrees.

10. The light-emitting display device according to claim 1, wherein: The smallest unit pixel is formed by a green sub-pixel, a red sub-pixel, and a blue sub-pixel.

11. The light-emitting display device according to claim 10, wherein: The triangle is provided by connecting the green sub-pixel, the red sub-pixel, and the blue sub-pixel with a straight line.

12. The light-emitting display device according to claim 11, wherein: The first opening and the second opening, each corresponding to the green sub-pixel, the red sub-pixel, and the blue sub-pixel, respectively, have an elliptical shape in planar shape, and The major axis of the second opening has an angular difference of 45×n degrees from the major axis of the adjacent second opening of the same color, where n is a natural number greater than or equal to 1 and less than or equal to 8.

13. The light-emitting display device according to claim 12, wherein: In the repeating unit pixel, in the second opening corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel, the second opening having a 90-degree difference in the long axis direction is alternately provided along the horizontal or vertical direction.

14. The light-emitting display device according to claim 13, wherein: In the repeating unit pixel, the major axis angle of the second opening corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel is provided alternately in the horizontal direction and the vertical direction at 0 degrees and 90 degrees and 45 degrees and 135 degrees.

15. The light-emitting display device according to claim 1, wherein: At least one of the first opening and the second opening has a circular shape in the planar shape.

16. The light-emitting display device according to claim 1, wherein: The second opening is located in a light-shielding layer provided above the pixel defining layer, or in the light-shielding area of ​​an overlapping color filter.

17. An electronic device comprising a light-emitting display device according to any one of claims 1 to 16.

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