Light emitting display device

Abstract

A light-emitting display device is disclosed, comprising: a substrate including red light-emitting portions, green light-emitting portions, blue light-emitting portions, and white light-emitting portions spaced apart from each other; red color filters, green color filters, and blue color filters located at the red light-emitting portions, green light-emitting portions, and blue light-emitting portions, respectively; a first scattering pattern between the substrate and the green color filter; a second scattering pattern on the substrate at the white light-emitting portions; an organic insulating layer configured to cover the red color filter, green color filter, blue color filter, and second scattering pattern; a light-emitting device disposed on the organic insulating layer and including a plurality of first electrodes spaced apart from each other at the red light-emitting portions, green light-emitting portions, blue light-emitting portions, and white light-emitting portions; and a dam configured to expose the plurality of first electrodes of the red light-emitting portions, green light-emitting portions, blue light-emitting portions, and white light-emitting portions.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2025-0011975, filed on January 24, 2025, which is incorporated herein by reference as if fully set forth herein. Technical Field

[0002] This disclosure relates to a light-emitting display device that can improve brightness efficiency and reduce lateral leakage current according to changes in viewing angle. Background Technology

[0003] Display devices that display images on TVs, monitors, smartphones, tablet PCs, and laptops are being used in a variety of ways and forms.

[0004] The display device includes multiple pixels for realizing an image and has transistors for controlling the operation of each pixel. Additionally, transistors formed through the same processing as those disposed in the pixels are also disposed in the non-active region surrounding the multiple pixels.

[0005] In display devices, light-emitting display devices that do not have a separate light source and have light-emitting elements within the display panel are considered competitive applications in order to achieve compactness and clear color display.

[0006] At the same time, there is a growing demand for light-emitting display devices that have uniform brightness from all viewing angles, including the frontal view, to improve image quality. Summary of the Invention

[0007] Therefore, this disclosure relates to the following light-emitting display device, which substantially eliminates one or more problems caused by the limitations and disadvantages of related technologies.

[0008] One aspect of this disclosure is to provide a light-emitting display device with an enhanced brightness viewing angle.

[0009] Another aspect of this disclosure is to provide a light-emitting display device having a brightness deviation that decreases with respect to changes in viewing angle, wherein the light-emitting devices are collectively included in the sub-pixels.

[0010] Another aspect of this disclosure is to provide a light-emitting display device that prevents or reduces leakage current between adjacent sub-pixels.

[0011] Additional advantages, aspects, and features of this disclosure will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon reviewing the following, or may be learned by practice of this disclosure. Aspects and other advantages of this disclosure may be realized and obtained from the written description of this disclosure and the structures particularly pointed out in the claims and drawings.

[0012] To achieve these and other advantages and for the purposes of this disclosure, as embodied and broadly described herein, a light-emitting display device includes: a substrate including red light-emitting portions, green light-emitting portions, blue light-emitting portions, and white light-emitting portions spaced apart from each other; a red color filter at the red light-emitting portions, a green color filter at the green light-emitting portions, and a blue color filter at the blue light-emitting portions; a first scattering pattern between the substrate and the green color filter; a second scattering pattern on the substrate at the white light-emitting portions; an organic insulating layer configured to cover the red color filter, the green color filter, the blue color filter, and the second scattering pattern; a light-emitting device on the organic insulating layer including a plurality of first electrodes spaced apart from each other at the red light-emitting portions, the green light-emitting portions, the blue light-emitting portions, and the white light-emitting portions; and a dam configured to expose the plurality of first electrodes at the red light-emitting portions, the green light-emitting portions, the blue light-emitting portions, and the white light-emitting portions.

[0013] It should be understood that both the foregoing general description of this disclosure and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0014] The accompanying drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. In the drawings:

[0015] Figure 1 This is a schematic plan view illustrating a light-emitting display device according to one embodiment of the present disclosure;

[0016] Figure 2 This is a plan view illustrating a light-emitting display device according to one embodiment of the present disclosure;

[0017] Figure 3 It is along Figure 2 A cross-sectional view taken from line I-I';

[0018] Figure 4 It is along Figure 2 A cross-sectional view taken from line II-II';

[0019] Figure 5 This is a diagram illustrating the circuitry of a sub-pixel of a light-emitting display device according to one embodiment of the present disclosure;

[0020] Figure 6 This is a diagram showing the emission angle of Experiment Example 1;

[0021] Figure 7This is a diagram showing the emission angle of Experimental Example 2; and

[0022] Figure 8 and Figure 9 This is a cross-sectional view showing an example of a light-emitting device of a light-emitting display apparatus according to an embodiment of the present disclosure. Detailed Implementation

[0023] Preferred embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or similar parts. In the following description of this disclosure, detailed descriptions of known functions and configurations incorporated herein will be omitted where such inclusion might obscure the subject matter of this disclosure. Furthermore, the names of elements used in the following description have been chosen for clarity of description and may differ from the names of elements in actual products.

[0024] The shapes, dimensions, ratios, angles, numbers, etc., shown in the accompanying drawings to illustrate various exemplary embodiments of this disclosure are merely illustrative. This disclosure is not limited to the illustrations in the accompanying drawings.

[0025] In this specification, where terms such as “comprising,” “having,” “including,” etc. are used, one or more components may be added unless a term such as “only” is used. As used herein, the term “and / or” includes any and all combinations of a single associated listed item and combinations of two or more associated listed items.

[0026] Expressions such as “at least one” before a list of elements may modify the entire list of elements or may not modify any individual element in the list. The term “at least one” should be understood to include any and all combinations of one or more of the associated listed items. For example, “at least one of the first, second, and third elements” means all combinations of the three listed elements, combinations of any two of the three elements, and each individual element—the first, second, and third elements.

[0027] The terminology used herein is for describing specific aspects and is not intended to limit the scope of this disclosure. As used herein, the terms “a” and “an” used to describe elements in the singular are intended to include multiple elements. Unless the context clearly indicates otherwise, elements described in the singular are intended to include multiple elements, and vice versa.

[0028] When interpreting a component or value, it should be interpreted to include a range of errors or tolerances, even if no explicit description of such range of errors or tolerances is provided.

[0029] In describing various exemplary embodiments of this disclosure, when using terms such as "on," "above," "below," and "next to" to describe the positional relationship between two elements, at least one intermediate element may exist between the two elements unless "immediately," "directly," or "nearly" is used. It should be understood that when an element or layer is referred to as "connected to" or "coupled to" another element or layer, that element or layer may be directly connected to or coupled to the other element or layer, or one or more intermediate elements or layers may exist.

[0030] In describing various exemplary embodiments of this disclosure, when using terms such as “after,” “following,” “next,” and “before” to describe the temporal relationship between two events, another event may occur between the two events unless more restrictive terms such as “just,” “immediately,” or “right away” are used.

[0031] In describing various exemplary embodiments of this disclosure, terms such as "first" and "second" may be used to describe various components. These terms are intended to distinguish identical or similar components from one another, rather than to limit the components. Therefore, throughout the specification, within the technical concept of this disclosure, a "first" component may be the same as a "second" component unless otherwise specifically mentioned.

[0032] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may interoperate differently and be technically driven. Embodiments of this disclosure may be performed independently of each other, or may be performed together in an interdependent relationship.

[0033] As used herein, the term "doped" layer refers to a layer comprising a first material and a second material having physical properties different from the first material (e.g., n-type and p-type materials, or organic and inorganic materials). Besides the difference in properties, the first and second materials may also differ in their amounts within the doped layer. For example, the host material may be the dominant component, while the dopant material may be a minor component. The first material constitutes the majority of the weight of the doped layer. Based on the total weight of the first material in the doped layer, the second material may be added in an amount less than 30% by weight. Considering the weight ratio, a "doped" layer can be a layer used to distinguish the host material from the dopant material of a layer. For example, if all materials constituting a layer are organic, and at least one material constituting the layer is n-type and another is p-type, then the layer is considered a "doped" layer when the n-type material is present in an amount less than 30% by weight, or when the p-type material is present in an amount less than 30% by weight.

[0034] Furthermore, the term "undoped" refers to a layer that has not been "doped." For example, a layer can be considered "undoped" when it contains a single material or a mixture of materials that have the same properties as each other. For example, if at least one of the materials constituting a layer is p-type, and none of the materials constituting the layer are n-type, then the layer is considered "undoped." For example, if at least one of the materials constituting a layer is an organic material, and none of the materials constituting the layer are inorganic materials, then the layer is considered "undoped."

[0035] In this disclosure, an electroluminescence (EL) spectrum can be calculated by multiplying (a) a photoluminescence (PL) spectrum by (b) an external coupling or emission spectrum curve, which applies the inherent properties of the light-emitting material (such as a dopant material or a host material) contained in the organic light-emitting layer, and the external coupling or emission spectrum curve is determined by the structure and optical properties of the organic light-emitting element (including the thickness of the organic layers such as, for example, hole transport layers and electron transport layers).

[0036] In the following description, a light-emitting display device according to the present disclosure will be described with reference to the accompanying drawings.

[0037] Figure 1 This is a block diagram schematically illustrating a light-emitting display device according to one embodiment of the present disclosure.

[0038] like Figure 1 As shown, a light-emitting display device 1000 according to one embodiment of the present disclosure may include a display panel 11, an image processor 12, a timing controller 13, a data driver 14, a scan driver 15, and a power supply 16.

[0039] Display panel 11 can display images in response to data signals DATA supplied from data driver 14, scan signals supplied from scan driver 15, and power supplied from power supply 16.

[0040] The display panel 11 may include sub-pixels SP disposed at each intersection of multiple gate lines GL and multiple data lines DL. The structure of the sub-pixels SP may vary depending on the type of the light-emitting display device 1000.

[0041] For example, a subpixel SP can be structured as a top-emitting, bottom-emitting, or dual-emitting type. A subpixel SP refers to a unit that can be equipped with a specific type of color filter or emit its own color without a color filter. For example, a subpixel SP may include red, green, and blue subpixels. Alternatively, a subpixel SP may include, for example, red, blue, white, and green subpixels. A subpixel SP may have one or more different emitting regions to emit various colors of light according to its emitting characteristics. For example, a blue subpixel and other subpixels emitting a different color from the blue subpixel may have different emitting regions.

[0042] One or more subpixels SP can form a unit pixel. For example, a unit pixel may include red, green, and blue subpixels, and these subpixels may be arranged repeatedly. Alternatively, a unit pixel may include red, green, blue, and white subpixels, and these subpixels may be arranged repeatedly, or they may be arranged in a quadrilateral pattern. In one embodiment according to this disclosure, the color type, arrangement type, arrangement order, etc., of the subpixels SP can be configured in various ways, and are not limited thereto, based on light-emitting characteristics, element lifespan, device specifications, etc.

[0043] The display panel 11 can be divided into a display area AA (inside the dashed lines) where subpixels SP are arranged to display images, and a non-display area NA surrounding the display area AA. A scan driver 15 can be installed in the non-display area NA of the display panel 11. Additionally, the non-display area NA may include pad portions containing pad electrodes PD.

[0044] Here, the display area AA is called the active area, and the non-display area NA is called the non-active area.

[0045] In addition to the externally supplied data signal DATA, the image processor 12 can also output a data enable signal DE, etc. Besides the data enable signal DE, the image processor 12 can also output one or more of a vertical synchronization signal, a horizontal synchronization signal, and a clock signal; however, for ease of explanation, these signals are omitted.

[0046] The timing controller 13 can receive data signals DATA other than drive signals from the image processor 12. Drive signals may include a data enable signal DE. Alternatively, drive signals may include a vertical synchronization signal, a horizontal synchronization signal, and a clock signal. The timing controller 13 can output a data timing control signal DDC for controlling the operating timing of the data driver 14 and a gate timing control signal GDC for controlling the operating timing of the scan driver 15, based on the drive signals.

[0047] The data driver 14 can sample and latch the data signal DATA supplied from the timing controller 13 in response to the data timing control signal DDC supplied from the timing controller 13, convert the sampled and latched data signal into a gamma reference voltage, and output the gamma reference voltage.

[0048] The data driver 14 can output a data signal DATA via the data line DL. The data driver 14 can be implemented as an integrated circuit (IC). For example, the data driver 14 can be electrically connected to the pad electrode PD disposed in the non-display area NA of the display panel 11 via a flexible circuit film (not shown).

[0049] The scan driver 15 can output a scan signal in response to the gate timing control signal GDC supplied from the timing controller 13. The scan driver 15 can output the scan signal through the gate line GL. The scan driver 15 can be implemented as an integrated circuit (IC) or as a gate in panel (GIP) in the display panel 11.

[0050] The power supply 16 can output high-potential voltage and low-potential voltage for driving the display panel 11. The power supply 16 can supply high-potential voltage to the display panel 11 through the first power line EVDD (driving power line or pixel power line) and can supply low-potential voltage to the display panel 11 through the second power line EVSS (auxiliary power line or common power line).

[0051] The display panel 11 can be divided into an active region AA and an active region NA, and can include a plurality of sub-pixels SP defined by gate lines GL and data lines DL that intersect each other and are formed in a matrix within the active region AA.

[0052] Subpixels SP may include subpixels that emit light of at least two or more colors selected from red, green, blue, yellow, magenta, and cyan. Additionally, multiple subpixel SPs may be provided with color filters of a specific type formed thereon, or may emit their own colors without color filters. However, this disclosure is not limited thereto, and the color type, arrangement type, arrangement order, etc., of the subpixel SPs can be configured in various ways according to light-emitting characteristics, element lifespan, device specifications, etc.

[0053] Each of the subpixels SP can include a light-emitting portion that emits light and a non-light-emitting portion surrounding the light-emitting portion.

[0054] In the following description, an embodiment of a light-emitting display device according to the present disclosure will be described with reference to the accompanying drawings, in which light-emitting portions REM, GEM, BEM or WEM of corresponding colors are applied to each of the red sub-pixel RSP, green sub-pixel GSP, blue sub-pixel BSP and white sub-pixel WSP.

[0055] Figure 2 This is a plan view illustrating a light-emitting display device according to one embodiment of the present disclosure, and Figure 3 It is along Figure 2 The cross-sectional view taken from line I-I'. Figure 4 It is along Figure 2 The cross-sectional view taken from line II-II'. Figure 5 This is a diagram illustrating the circuitry of a sub-pixel of a light-emitting display device according to one embodiment of the present disclosure.

[0056] like Figures 2 to 4 As shown, a light-emitting display device according to one embodiment of the present disclosure includes: a substrate 110 including a plurality of light-emitting portions REM, GEM, BEM, and WEM; color filters CF, namely RCF, GCF, and BCF, disposed on the substrate 110 except for the white light-emitting portion WEM; an organic insulating layer 126 disposed on each of the light-emitting portions REM, GEM, BEM, and WEM including the color filters CF, namely RCF, GCF, and BCF; and a light-emitting device 150 on the organic insulating layer 126. Furthermore, the light-emitting display device includes scattering patterns 131, namely 131a and 131b, in the green light-emitting portion GEM and the white light-emitting portion WEM between the substrate 110 and the color filter GCF, and between the substrate 110 and the organic insulating layer 126.

[0057] More specifically, the red light-emitting portion REM, the green light-emitting portion GEM, the blue light-emitting portion BEM, and the white light-emitting portion WEM are regions spaced apart from each other on the substrate 110 and correspond to the opening regions of the dam 140. The dam 140 is disposed in the non-light-emitting portion NEM between the spaced-apart red light-emitting portion REM, green light-emitting portion GEM, blue light-emitting portion BEM, and white light-emitting portion WEM.

[0058] Each subpixel RSP, GSP, BSP, or WSP includes a light-emitting portion REM, GEM, BEM, or WEM and a non-light-emitting portion NEM surrounding the light-emitting portions REM, GEM, BEM, and WEM.

[0059] The light-emitting device 150 includes a first electrode 151, an intermediate layer 152, and a second electrode 153.

[0060] Multiple first electrodes 151 are disposed on an organic insulating layer 126 on a substrate 110. The multiple first electrodes 151 are spaced apart from each other to be disposed in corresponding sub-pixels RSP, GSP, BSP, and WSP. In contrast to the multiple first electrodes 151, an intermediate layer 152 and a second electrode 153, which are other components of the light-emitting device 150, may be disposed together in the multiple sub-pixels.

[0061] Intermediate layer 152 can emit white light and includes multiple organic layers. Intermediate layer 152 may include one or more light-emitting stacks. For example, intermediate layer 152 may include a hole transport layer, one or more light-emitting layers for emitting light of at least one color, and an electron transport layer in each light-emitting stack. Each of the hole transport layer, light-emitting layer, and electron transport layer may be an organic layer that independently contains organic material. When intermediate layer 152 includes multiple light-emitting stacks, a charge generation layer may be provided between adjacent light-emitting stacks.

[0062] Since the intermediate layer 152 shares multiple layers in the multiple sub-pixels RSP, GSP, BSP, and WSP disposed in the active region AA of the substrate 110, it offers the following advantages: it eliminates the need for deposition masks with micro-apertures, and it increases the manufacturing yield of the light-emitting display device because misalignment of the deposition masks used for the corresponding layers does not cause a reduction in yield. Because the intermediate layer 152 emits white light, in order to achieve individual color expression in the corresponding sub-pixels RSP, GSP, and BSP, such as... Figure 2 and Figure 3 As shown, a red filter RCF that selectively emits light with a red wavelength is set in the red sub-pixel RSP, a green filter GCF that selectively emits light with a green wavelength is set in the green sub-pixel GSP, and a blue filter BCF that selectively emits light with a blue wavelength is set in the blue sub-pixel BSP.

[0063] In each sub-pixel RSP, GSP, BSP, or WSP, the first electrode 151 of the light-emitting device 150 is electrically connected to the thin-film transistor TFT, so that the light-emitting device 150 of each sub-pixel RSP, GSP, BSP, or WSP can be driven independently.

[0064] The dam 140 may overlap with the edge of the first electrode 151 of the light-emitting device 150, and expose the first electrode 151 of the light-emitting portion REM, GEM, BEM or WEM in each sub-pixel RSP, GSP, BSP or WSP.

[0065] In the light-emitting display device of the embodiments of the present disclosure, a first scattering pattern 131a is disposed between the substrate 110 and the green color filter GCF in the green light-emitting portion GEM, and a second scattering pattern 131b is disposed between the substrate 110 and the organic insulating layer 126 in the white light-emitting portion WEM.

[0066] The upper surface of the organic insulating layer 126 becomes the surface on which the first electrode 151 of the light-emitting device 150 is formed in each sub-pixel RSP, GSP, BSP, or WSP, and the organic insulating layer 126 comprises a transparent organic insulating material. The organic insulating layer 126 may comprise an outer coating material.

[0067] Each of the first scattering pattern 131a and the second scattering pattern 131b has a randomly sized pleated pattern on its upper surface.

[0068] Each of the first scattering pattern 131a and the second scattering pattern 131b may have multiple curved surfaces, the upper surfaces of which protrude toward the organic insulating layer 126. The heights of the multiple curved surfaces may differ, and the multiple curved surfaces are randomly arranged without a certain periodicity. Therefore, due to the structure of the first scattering pattern 131a and the second scattering pattern 131b, the light incident on the first scattering pattern 131a and the second scattering pattern 131b does not have a dependence on a specific wavelength. Figure 3 As shown, the first scattering pattern 131a and the second scattering pattern 131b can cause the light incident on them to be scattered not only vertically, but also at multiple angles due to the folded patterns or multiple curved surfaces formed on the upper surfaces of the first scattering pattern 131a and the second scattering pattern 131b, thereby widening the light emission distribution.

[0069] In the white light-emitting portion WEM, white light passing through the light-emitting device 150 is incident on the second scattering pattern 131b through the organic insulating layer 126, and the light incident on the second scattering pattern 131b is radially scattered from the upper surface of the second scattering pattern 131b at multiple angles, passes through the second scattering pattern 131b, multiple insulating layers 120 and substrate 110, and is emitted as scattered white light WL.

[0070] In the green light-emitting portion GEM, white light passing through the light-emitting device 150 and traveling downwards passes through the organic insulating layer 126 and the green color filter GCF to be selectively emitted as green light, and is incident on the first scattering pattern 131a from the green color filter CGF. The green light incident on the first scattering pattern 131a is radially scattered from the upper surface of the first scattering pattern 131a at multiple angles, passes through the first scattering pattern 131a, multiple insulating layers 120 and substrate 110, and is emitted as scattered green light GL.

[0071] In the red light-emitting portion REM and the blue light-emitting portion BEM, which do not have the first scattering pattern 131a and the second scattering pattern 131b, white light passing through the light-emitting device 150 and moving downwards passes through the organic insulating layer 126, the red color filter RCF and the blue color filter BCF, multiple insulating layers 120 and the substrate 110, and is emitted in the vertical direction as red light RL and blue light BL with a large amount of light emission.

[0072] The first scattering pattern 131a and the second scattering pattern 131b are configured to increase the luminous efficiency and luminous distribution area of ​​white light, and thus reduce the brightness deviation according to the change of viewing angle when the light-emitting display device is viewed from different angles.

[0073] A light-emitting display device according to one embodiment of the present disclosure has scattering patterns 131, namely 131a and 131b, which are provided not only in the white light-emitting portion WEM but also in the green light-emitting portion GEM. Since the luminance viewing angle is evaluated in white display, the white light-emitting portion WEM is provided with a second scattering pattern 131b. Furthermore, regarding the luminance efficiency of the light-emitting display device, since the luminance contribution of the green light-emitting portion GEM is higher than that of the red light-emitting portion REM and the blue light-emitting portion BEM, the luminance characteristics of the green light-emitting portion GEM significantly affect the luminance characteristics of the light-emitting display device. Therefore, the light-emitting display device according to one embodiment of the present disclosure provides a first scattering pattern 131a in the green light-emitting portion GEM among the red light-emitting portion REM, the green light-emitting portion GEM, and the blue light-emitting portion BEM to improve the luminance efficiency of the green light-emitting portion GEM, thereby providing luminance enhancement efficiency during white display.

[0074] When the light-emitting display device including the light-emitting device 150 (which has an intermediate layer 152 comprising multiple light-emitting stacks) does not have a scattering pattern, the half-brightness angle (i.e., the angle at which the brightness drops to half of the front brightness) is a viewing angle of approximately 50° to 60°. When the light-emitting display device of this disclosure has a first scattering pattern 131a and a second scattering pattern 131b in the green light-emitting portion GEM and the white light-emitting portion WEM, the half-brightness angle can be improved by diversifying the luminous efficiency and luminous distribution through the first scattering pattern 131a and the second scattering pattern 131b when the viewing angle changes, and more specifically, the half-brightness angle can be improved by approximately 10° or more compared to a structure without a scattering pattern.

[0075] The upper surface of the first scattering pattern 131a is in contact with the green color filter GCF. The upper surface of the second scattering pattern 131b is in contact with the organic insulating layer 126. Therefore, the vertical phase of the light-emitting device 150 disposed on the organic insulating layer 126 in the green light-emitting portion GEM and the white light-emitting portion WEM can be different.

[0076] The upper surface of the green color filter GCF overlapping with the first scattering pattern 131a and the upper surface of the organic insulating layer 126 overlapping with the second scattering pattern 131b can be flat.

[0077] The first scattering pattern 131a and the second scattering pattern 131b have the same vertical phase on the substrate 110. Figure 3 An example is shown where the first scattering pattern 131a and the second scattering pattern 131b are located on the upper surface of the same insulating layer 120.

[0078] Pixel circuits can be set in each sub-pixel SP of the substrate 110, namely RSP, GSP, BSP or WSP. Figure 5 An example of a pixel circuit, which will be described later, is shown.

[0079] A pixel circuit is also provided between the substrate 110 and the organic insulating layer 126, and the pixel circuit overlaps with the dam 140 and is provided in the non-light-emitting portion NEM so as not to interfere with the light emission in the light-emitting portions REM, GEM, BEM and WEM.

[0080] The pixel circuit may include a transistor TFT that is conductively connected to the first electrode 151 of the light-emitting device 150. For example... Figure 4 As shown, the transistor TFT can be disposed in the non-light-emitting portion NEM and includes an active layer 112, a gate electrode 113 overlapping the channel region of the active layer 112, and a first source / drain electrode 114 and a second source / drain electrode 115 connected to both sides of the active layer 112.

[0081] Alternatively, the first source electrode / drain electrode 114 can be connected to the first electrode 151 of the light-emitting device 150 via the connecting electrode 135. In some cases, the connecting electrode 135 can be omitted, allowing the first source electrode / drain electrode 114 to be directly connected to the first electrode 151 of the light-emitting device 150.

[0082] A light-shielding pattern 111 can also be provided below the active layer 112 to prevent the active layer 112 from being affected by light entering from below the substrate 110.

[0083] The insulating layer 120 may include a first insulating layer to a fifth insulating layer 121, 122, 123, 124, and 125 sequentially disposed on the substrate 110. The first insulating layer 121 may serve as a buffer layer to prevent impurities from the substrate 110 from penetrating components disposed on the upper surface of the substrate 110, such as transistors (TFTs), wiring, or light-emitting devices 150. The second insulating layer 122 may be disposed between the light-shielding pattern 111 and the active layer 112, and serves as a buffer layer or interlayer insulating layer. The third insulating layer 123 may be disposed between the active layer 112 and the gate electrode 113, and may serve as a gate insulating layer. The fourth insulating layer 124 may serve as an interlayer insulating layer located between the gate electrode 113 and the first source / drain electrode 114 and the second source / drain electrode 115.

[0084] The fifth insulating layer 125 covering the transistor TFT, including the first source / drain electrode 114 and the second source / drain electrode 115, can be used as a protective layer. The fifth insulating layer 125 can also be referred to as a planarization layer.

[0085] Organic insulating layer 126 and fifth insulating layer 125 may comprise organic insulating material. In some cases, organic insulating layer 126 and fifth insulating layer 125 may be formed of the same organic insulating material. At least a first scattering pattern 131a is disposed in a region greater than or equal to the green emitting portion GEM and overlaps with the non-emitting portion NEM surrounding the green emitting portion GEM. A second scattering pattern 131b is disposed in a region greater than or equal to the white emitting portion WEM.

[0086] The green color filter GCF disposed on the first scattering pattern 131a is disposed in a region larger than the first scattering pattern 131a, such that at least the upper surface of the first scattering pattern 131a, which has folds or multiple curved portions, has an interface that is in integral contact with the green color filter GCF. Figure 2 and Figure 4 As shown, the green color filter GCF can be set in an area larger than the first scattering pattern 131a, and has an edge in the non-emitting portion NEM that covers the side surface of the first scattering pattern 131a.

[0087] The first electrode 151 in the green light-emitting portion GEM is provided with a first scattering pattern 131a formed therebelow, and therefore has a higher vertical phase than the first electrode 151 in the red light-emitting portion REM and the blue light-emitting portion BEM.

[0088] Furthermore, since the white light-emitting part WEM does not have color filters RCF, GCF, or BCF, unlike the red light-emitting part REM, the green light-emitting part GEM, and the blue light-emitting part BEM, the first electrode 151 in the white light-emitting part WEM can have a lower vertical phase compared to the first electrode 151 in the red light-emitting part REM, the green light-emitting part GEM, and the blue light-emitting part BEM.

[0089] Reference Figure 3 The thicknesses of the color filters RCF, GCF, and BCF are greater than the thicknesses of the first scattering pattern and the second scattering pattern 131, namely 131a and 131b. The thicknesses of the color filters RCF, GCF, and BCF are approximately 1.1 μm to 3 μm. The thicknesses of the first scattering pattern 131a and the second scattering pattern 131b are 0.5 μm to 1.0 μm.

[0090] In the corresponding light-emitting portions REM, GEM, BEM, and WEM, the thickness between the insulating layer 120 and the organic insulating layer 126 differs due to the differences in whether color filters RCF, GCF, and BCF are provided and whether the first scattering pattern 131a or the second scattering pattern 131b is provided. Furthermore, the vertical phase of the first electrode 151 differs from that of the upper surface of the organic insulating layer 126, which reflects the step caused by the lower configuration. Therefore, the vertical phase of the first electrode 151 provided on the organic insulating layer 126 in each light-emitting portion REM, GEM, BEM, or WEM is different. Generally, the vertical phase of the first electrode 151 is highest in the green light-emitting portion GEM, and then decreases in the order of red light-emitting portion REM, blue light-emitting portion BEM, and white light-emitting portion WEM. The reason for the difference in the vertical phase of the first electrode 151 between the red light-emitting portion REM and the blue light-emitting portion BEM is that a color filter that transmits a longer wavelength (RCF>BCF) is thicker than another color filter (RCF>BCF). However, this is just an example, and the thickness difference between the red color filter RCF and the blue color filter BCF can be minimal or negligible.

[0091] In the light-emitting display device according to an embodiment of the present disclosure, a red light-emitting portion REM or a blue light-emitting portion BEM with a vertical phase difference between each of the green light-emitting portion GEM and the white light-emitting portion WEM is disposed between the green light-emitting portion GEM having the highest vertical phase and the white light-emitting portion WEM having the lowest vertical phase, rather than between the red color filter RCF and the blue color filter BCF. This causes the dam 140 to be disposed as an inclined plane passing through the upper surface of the organic insulating layer 126 with different vertical phases between adjacent light-emitting portions REM, GEM, BEM and WEM, thereby increasing the surface area occupied by the dam 140 compared to the surface area of ​​the non-light-emitting portion NEM of the substrate 110.

[0092] In the same manner as the organic insulating layer 126, which has an upper surface formed by reflecting the steps created by the lower configuration, the embankment 140 is also formed by reflecting the steps created by the lower configuration.

[0093] The intermediate layer 152 of the light-emitting device 150 has an uninterrupted continuous configuration in the multiple sub-pixels RSP, GSP, BSP, and WSP. Therefore, the intermediate layer 152 is not only continuously disposed on the light-emitting portions REM, GEM, BEM, and WEM, but also continuously disposed on the dam 140. In this case, the intermediate layer 152 disposed on the increased surface area of ​​the dam 140 between adjacent light-emitting portions REM, GEM, BEM, and WEM increases the resistance between adjacent long light-emitting portions REM, GEM, BEM, and WEM. Therefore, when a predetermined light-emitting portion REM, GEM, BEM, or WEM emits light, the increased surface area of ​​the dam 140 increases the path of leakage current in the adjacent light-emitting portions into which the dam 140 is inserted, thereby preventing or significantly reducing leakage light emission.

[0094] The light-emitting display device according to an embodiment of the present disclosure has a structure in which an intermediate layer 152 is commonly disposed in sub-pixels RSP, GSP, BSP, and WSP. Therefore, the intermediate layer 152 is disposed indiscriminately between the respective sub-pixels RSP, GSP, BSP, and WSP, resulting in excellent deposition yield and excellent deposition efficiency for each layer. However, in the structure where the intermediate layer is commonly disposed in the sub-pixels, when a dam is provided between sub-pixels with the same vertical phase, the leakage current between adjacent sub-pixels may be large due to the high mobility of the intermediate layer disposed on the dam. However, in a light-emitting display device according to an embodiment of the present disclosure, the vertical phases of the upper surfaces of the organic insulating layer 126 in the corresponding light-emitting portions REM, GEM, BEM, and WEM of adjacent sub-pixels are different, and the dam 140 disposed on the organic insulating layers 126 with different vertical phases is provided by reflecting the steps caused by the different vertical phases of the upper surfaces of the organic insulating layers 126. The intermediate layer 152 disposed on the dam 140 is also disposed on the upper surface of the dam 140 between two adjacent sub-pixels with different heights, such that even if the intermediate layer 152 is disposed together between adjacent sub-pixels, the intermediate layer 152 also has an extended path between adjacent sub-pixels RSP-GSP, GSP-BSP, BSP-WSP or WSP-RSP, and thus the resistance increases in the flow of leakage current, and specifies that the emission of the sub-pixel does not cause leakage emission of the adjacent sub-pixel or has minimal impact.

[0095] In particular, leakage current is generated by low grayscale light emission, and in the light emission display device according to the embodiments of the present disclosure, a dam 140 with an increased surface area can be provided to eliminate low grayscale leakage light emission.

[0096] In addition, a light-emitting display device according to one embodiment of the present disclosure can effectively prevent lateral leakage current caused by the intermediate layer 152 commonly disposed in adjacent sub-pixels.

[0097] The first electrode 151 of each of the red light-emitting portion REM, the green light-emitting portion GEM, the blue light-emitting portion BEM, and the white light-emitting portion WEM can contact the flat upper surface of the organic insulating layer 126. As described above, the upper surface of the organic insulating layer 126 in the light-emitting portions REM, GEM, BEM, and WEM is flat, but the vertical phase of the upper surface of the organic insulating layer 126 in the light-emitting portions REM, GEM, BEM, and WEM is different. Due to the difference in vertical phase, the dam 140 is configured to have a surface area wider than the non-light-emitting portion on the substrate 110, thereby increasing the path of the common layer disposed on the dam 140 on adjacent sub-pixels.

[0098] The maximum thickness of the first scattering pattern 131a can be less than the thickness of the green color filter GCF. The maximum thickness of the first scattering pattern 131a refers to the vertical distance from the interface where the first scattering pattern 131a contacts the upper surface of the insulating layer 120 to the portion of the first scattering pattern 131a that protrudes most upward toward the organic insulating layer 126. The maximum thickness of the first scattering pattern 131a is 0.5 μm to 1.0 μm, and less than the thickness of the green color filter GCF, which is 1.2 μm to 3.0 μm.

[0099] The surface roughness of the first scattering pattern 131a is not exposed from the green filter GCF, and the upper surface of the green filter GCF can be flat.

[0100] The first scattering pattern 131a and the second scattering pattern 131b can be formed from the same material through the same patterning process. The first scattering pattern 131a and the second scattering pattern 131b are formed by spin-coating a liquid resin material onto the upper surface of the insulating layer 120, irradiating the resin material with ultraviolet light to form a wrinkled pattern on the upper surface of the resin material and curing it, and then selectively patterning such that the cured resin material remains in the green emitting portion (GEM) and the white emitting portion (WEM). During the patterning process, the resin material is removed from the red emitting portion (REM) and the blue emitting portion (BEM), excluding the portions of the green emitting portion (GEM) and the white emitting portion (WEM) and the non-emitting portion (NEM) surrounding the green emitting portion (GEM) and the white emitting portion (WEM).

[0101] The size and shape of the wrinkled patterns retained on the upper surfaces of the first scattering pattern 131a and the second scattering pattern 131b can vary depending on the energy intensity and duration of ultraviolet (UV) irradiation.

[0102] The first scattering pattern 131a and the second scattering pattern 131b have a transmittance of 90% or more for light in the visible spectrum, so as to have the function of scattering auxiliary light in the direction of light travel, and do not hinder the transmission of green light passing through the green color filter GCF in the green light-emitting part GEM or the transmission of white light passing through the light-emitting device 150 in the white light-emitting part WEM.

[0103] The refractive indices of the first scattering pattern 131a and the second scattering pattern 131b can be lower than those of the green color filter GCF and the organic insulating layer 126, respectively.

[0104] The maximum thickness of the first scattering pattern 131a and the second scattering pattern 131b can be less than the maximum thickness of the organic insulating layer 126.

[0105] The organic insulating layer 126 is formed by setting color filters RCF, GCF, and BCF in the red sub-pixel RSP, green sub-pixel GSP, and blue sub-pixel BSP, spin-coating the material, and then firing the material to cure it. Here, the maximum thickness of the organic insulating layer 126 can be observed in the NEM of the non-light-emitting portion surrounding the green color filter GCF in the green sub-pixel GSP.

[0106] The refractive index of the first scattering pattern 131a may be lower than that of the green filter GCF, and the refractive index of the second scattering pattern 131b may be lower than that of the organic insulating layer 126. Light passing through the green filter GCF through the first scattering pattern 131a is radially scattered from the upper surface of the first scattering pattern 131a, and light passing through the organic insulating layer 126 through the second scattering pattern 131b is radially scattered from the upper surface of the second scattering pattern 131b.

[0107] The upper surface of the organic insulating layer 126 has a curved surface in which the vertical phase changes in the region surrounding the green emitting portion GEM and a curved surface in which the vertical phase changes in the region surrounding the white emitting portion WEM, and the embankment 140 can be respectively disposed on the curved surface in the non-emitting portion surrounding the green emitting portion GEM and the curved surface in the non-emitting portion surrounding the white emitting portion WEM.

[0108] The curved surface of the upper surface of the organic insulating layer 126 surrounding the green emitting portion GEM can be located between the green emitting portion GEM and the red emitting portion REM, and between the green emitting portion GEM and the blue emitting portion BEM. Similarly, the curved surface of the upper surface of the organic insulating layer 126 surrounding the white emitting portion WEM can be located between the white emitting portion WEM and the blue emitting portion BEM, and between the white emitting portion WEM and the red emitting portion REM. The curved surface of the upper surface of the organic insulating layer 126 increases the path for the embankment 140 and the intermediate layer 152 formed thereon, allowing the intermediate layer 152 to increase the resistance to leakage current in adjacent sub-pixels and eliminate the influence of leakage current between adjacent sub-pixels.

[0109] Here, the first electrode 151 in the green light-emitting portion (GEM) is configured to contact the flat upper surface of the organic insulating layer 126 at a first vertical distance from the substrate 110, and the first electrode 151 in the white light-emitting portion (WEM) is configured to contact the flat upper surface of the organic insulating layer 126 at a second vertical distance from the substrate 110, which is less than the first vertical distance. The first electrodes in the red light-emitting portion (REM) and the blue light-emitting portion (BEM) are configured to contact the flat upper surface of the organic insulating layer 126 at a distance between the first and second vertical distances from the substrate 110.

[0110] The intermediate layer 152 can be disposed on the upper surface of the first electrode 151 in each of the red light-emitting portion REM, the green light-emitting portion GEM, the blue light-emitting portion BEM, and the white light-emitting portion WEM, and can also be disposed on the upper surface of the embankment 140.

[0111] like Figure 5 As shown, each sub-pixel SP in the active region AA, namely RSP, WSP, BSP, or WSP, may include, for example, a first transistor T1, a second transistor T2, a storage capacitor Cst, a compensation circuit CC, and a light-emitting device ED. Figure 3 and Figure 4 150 in the middle).

[0112] For example, the first transistor T1 can be a switching transistor, and the second transistor T2 can be a driving transistor.

[0113] The first source / drain electrode (e.g., drain electrode) of the first transistor T1 is conductively connected to the data line DL, and the second source / drain electrode (e.g., source electrode) of the first transistor T1 is conductively connected to the first node N1. The gate electrode of the first transistor T1 is conductively connected to the gate line GL. In response to a scan signal supplied through the gate line GL, the first transistor T1 transmits a data signal supplied through the data line DL to the first node N1.

[0114] The storage capacitor Cst is electrically connected to the first node N1 and is charged with the applied voltage.

[0115] The first source / drain electrode (e.g., drain electrode) of the second transistor T2 receives a high-voltage power supply voltage EVDD as a high-potential drive voltage via the drive voltage line VDDL, and the second source / drain electrode (e.g., source electrode) of the second transistor T2 is conductively connected to the first electrode (e.g., anode AND) of the light-emitting device ED. The second transistor T2 can control the amount of drive current flowing to the light-emitting device ED in response to the voltage applied to the gate electrode.

[0116] The semiconductor layer of the first transistor T1 and / or the second transistor T2 may comprise silicon such as amorphous silicon (a-Si), polycrystalline silicon (poly-Si), or low-temperature polycrystalline silicon (poly-Si), or may comprise oxides such as indium gallium zinc oxide (IGZO), but is not limited thereto. At least one of the first transistor T1 or the second transistor T2 may comprise an oxide semiconductor layer, and thus can be formed at a relatively low temperature compared to other materials, maintaining amorphous properties and having high mobility.

[0117] LED (Electronic Light Emitting Device) Figure 3 and Figure 4The light-emitting device (ED) outputs light corresponding to the driving current. The ED can output light corresponding to any of the colors red, green, blue, and white.

[0118] The light-emitting device (ED) 150 may include a first electrode 151, an intermediate layer 152 disposed on the first electrode 151, and a second electrode 153 supplying a common voltage. The intermediate layer 152 may include multiple common layers and one or more light-emitting layers.

[0119] The second electrode 153 of the light-emitting device (ED) 150 receives a low-potential voltage EVSS or ground voltage via a low-potential voltage line VSSL. The low-potential voltage line VSSL can be set up and included in the non-active region NA. In some cases, the low-potential voltage line VSSL can also be set up in the active region AA to prevent unevenness of the low-potential voltage EVSS generated in the active region AA. The low-potential voltage EVSS is also referred to as the common voltage.

[0120] A compensation circuit CC can be disposed in the sub-pixel SP to compensate for the threshold voltage of the second transistor T2, etc. The compensation circuit CC can consist of one or more transistors. The compensation circuit CC may include one or more transistors and capacitors, and can be configured in various ways depending on the compensation method. The sub-pixel SP including the compensation circuit CC may include circuits with various structures (e.g., 3T1C, 4T2C, 5T2C, 6T1C, 6T2C, 7T1C, and 7T2C) with different numbers of transistors and / or capacitors.

[0121] at the same time, Figure 5 The pixel circuit of the sub-pixel SP shown can be set in each sub-pixel SP. Figure 4 The transistor TFT shown can be, for example... Figure 5 The second transistor T2. However, embodiments of the present disclosure are not limited thereto, and the transistor connected to the light-emitting device 150 may be a transistor that receives a light-emitting control signal. Figure 5 These are examples of pixel circuits for subpixels, and subpixel SPs, i.e., RSPs, GSPs, BSPs, or WSPs, may also include other transistors and / or capacitors.

[0122] The undescribed configuration of the light-emitting display device of this disclosure will now be described.

[0123] The substrate 110 may include at least one of a glass substrate, a plastic film, and a metal film having a specified supporting force. The substrate 110 may be formed of a flexible material. For example, when the substrate 110 is formed of multiple layers, it may have a stacked structure of a first organic layer, an inorganic insulating layer, and a second organic layer. The first organic layer, provided as the outermost layer, can prevent the introduction of external impurities and has a protective function. The second organic layer can planarize the surface on which the internal array structure is formed and prevent charge transfer or impurity transfer from the outside to the inside of the substrate 110. The inorganic insulating layer between the first and second organic layers can prevent moisture diffusion between the first and second organic layers and prevent conductive impurities from moving towards the second organic layer.

[0124] The subpixels RSP, GSP, BSP, and WSP described herein refer to multiple partitioned regions within the active region AA arranged on the substrate 110. Each of the subpixels RSP, GSP, BSP, and WSP includes a light-emitting portion REM, WEM, BEM, or GEM and a non-light-emitting portion surrounding the light-emitting portion REM, WEM, BEM, or GEM.

[0125] The non-light-emitting portion is defined by a dam 140 that defines the light-emitting portions REM, WEM, BEM, and GEM of the sub-pixels. The dam 140 is disposed in the non-light-emitting portion to expose the first electrodes 151 of the light-emitting portions REM, WEM, BEM, and GEM disposed in the respective sub-pixels RSP, GSP, BSP, and WSP. The dam 140 is configured to cover the edge of each of the first electrodes 151. The dam 140 has openings corresponding to the light-emitting portions REM, WEM, BEM, and GEM.

[0126] The dam 140 can be formed of a transparent or opaque organic material. When the dam 140 contains an opaque organic material, it can also contain a light-shielding organic material that absorbs or blocks at least some wavelengths of the visible spectrum. The light-shielding organic material of the dam 140 includes light-absorbing materials that absorb at least some wavelengths of the visible spectrum. The dam 140 can contain materials such as carbon black or coloring pigments. The dam 140 can be formed by stacking layers of light-shielding organic material and layers of light-transmitting organic material, or it can be formed as a single layer from layers of light-transmitting organic material.

[0127] The light-emitting display device has a circuit configuration comprising a plurality of transistor TFTs and one or more storage capacitors in each sub-pixel RSP, GSP, BSP, or WSP on a substrate 110, and each sub-pixel RSP, GSP, BSP, or WSP can be selectively driven. As an example, Figure 4The diagram shows one transistor TFT in each sub-pixel SP (RSP, GSP, BSP, or WSP), but each sub-pixel SP (RSP, GSP, BSP, or WSP) may include two or more transistors as needed. The pixel circuitry for each sub-pixel RSP, GSP, BSP, or WSP may include: one or more switching transistors that control whether the corresponding sub-pixel RSP, GSP, BSP, or WSP is turned on; and a driving transistor that supplies driving current to the light-emitting device 150.

[0128] A light-shielding pattern 111 can also be provided below the transistor TFT to prevent the active layer 112 from being affected by light entering through the substrate 110. Ideally, the light-shielding pattern 111 should have a larger area than the channel region of the active layer 112. In some cases, the light-shielding pattern 111 can be omitted.

[0129] An insulating layer 120 comprising multiple insulating layers 121, 122, 123, 124 and 125 is disposed on a substrate 110, and color filters CF, namely RCF, GCF and BCF, comprising a first scattering pattern 131a and a second scattering pattern 131b, may be disposed on the insulating layer 120.

[0130] The first insulating layer 121 can be used as a buffer layer or an active buffer layer. Buffer layers and active buffer layers can prevent contaminants from transferring upwards from the wiring included in the internal array or active layer, and support and protect the upper components. The first insulating layer 121 may include multiple layers.

[0131] The transistor TFT and storage capacitor can be disposed on the first insulating layer 121 in each sub-pixel RSP, GSP, BSP or WSP.

[0132] A light-shielding pattern 111 that prevents light from being transmitted from below to the active layer 112 of the transistor TFT can be disposed on the first insulating layer 121.

[0133] The second insulating layer 122 for insulation can be disposed between the light-shielding pattern 111 and the active layer 112.

[0134] The transistor TFT can be disposed on the second insulating layer 122 in each of the plurality of sub-pixels SP. For example, the transistor TFT may include an active layer 112, a gate electrode 113 overlapping the active layer 112 (with a third insulating layer 123 inserted between the active layer 112 and the gate electrode 113), and a first source / drain electrode 114 and a second source / drain electrode 115 connected to both sides of the active layer 112.

[0135] As an example, the storage capacitor may include a first storage electrode and a second storage electrode that overlap each other. At least one of the first storage electrode or the second storage electrode may contain the same material as the active layer 112, and the other may contain the same material as at least one of the gate electrode 113, the first power / drain electrode 114 and the second power / drain electrode 115, or the light-shielding pattern 111.

[0136] The third insulating layer 123 between the active layer 112 and the gate electrode 113 can be used as a gate insulating layer.

[0137] The active layer 112 may comprise, for example, a silicon-based semiconductor or an oxide semiconductor. The silicon-based semiconductor may include crystalline silicon and / or amorphous silicon. The oxide semiconductor may include at least one of gallium oxide, tin oxide, zinc oxide, indium oxide, iron oxide, or indium-gallium-zinc oxide. In some cases, the oxide semiconductor layer may be formed as multiple layers of different materials or with different material composition ratios. Each sub-pixel may include multiple thin-film transistors, and the thin-film transistors may be located on different layers. For example, each sub-pixel of the substrate 110 may include multiple thin-film transistors with different active layers. For example, a first thin-film transistor may have a silicon-based active layer and be positioned closer to the substrate 110, and a second thin-film transistor may have an oxide-based active layer and be disposed above the first thin-film transistor.

[0138] The active layer 112 may include a channel region overlapping with the gate electrode 113, and a source / drain region respectively connected to the first source / drain electrode 114 and the second source / drain electrode 115.

[0139] The third insulating layer 123 can be selectively disposed corresponding to the channel region of the active layer 112, or it can be disposed on the entire surface of the substrate 110 except for the regions penetrated by the first source / drain electrode 114 and the second source / drain electrode 115. The third insulating layer 123 can perform the function of insulating the active layer 112 from the gate electrode 113. The third insulating layer 123 can be formed of an inorganic insulating material, and can be, for example, silicon oxide (SiO2). x ) layer, silicon nitride (SiN) x ) layer, silicon nitride oxide (SiO) x N y (1) layers or multiple layers thereof.

[0140] The gate electrode 113 may be formed on the third insulating layer 123. The gate electrode 113 may be configured to face the active layer 112, wherein the third insulating layer 123 is inserted between the gate electrode 113 and the active layer 112.

[0141] A fourth insulating layer 124 may be formed on the gate electrode 113 to cover and protect the gate electrode 113. Additionally, the fourth insulating layer 124 may function to protect at least one electrode (e.g., the gate electrode 113) and the active layer 112 of the thin-film transistor TFT. The fourth insulating layer 124 may be formed of an inorganic insulating material. For example, the fourth insulating layer 124 may be, for example, silicon oxide (SiO2). x ) layer, silicon nitride (SiN) x ) layer, silicon nitride oxide (SiO) x N y (1) layers or multiple layers thereof.

[0142] The first source / drain electrode 114 and the second source / drain electrode 115 can be disposed on the fourth insulating layer 124. The fourth insulating layer 124 and the third insulating layer 123 have contact holes so that the first source / drain electrode 114 and the second source / drain electrode 115 can respectively contact the two ends of the active layer 112 by removing the corresponding areas.

[0143] Each of the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a single layer or multiple layers.

[0144] When the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are formed as a single layer, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed from one of the group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys. Alternatively, when the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are formed as a multilayer, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a bilayer of molybdenum / aluminum-neodymium, molybdenum / aluminum, titanium / aluminum, or copper / molybdenum-titanium. Alternatively, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a three-layer structure of molybdenum / aluminum-neodymium / molybdenum, molybdenum / aluminum / molybdenum, titanium / aluminum / titanium, or molybdenum-titanium / copper / molybdenum-titanium.

[0145] However, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are not limited thereto, and the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a multilayer, the multilayer being formed of one of the following: molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0146] A fifth insulating layer 125 can also be disposed on the transistor TFT to protect the transistor TFT. The fifth insulating layer 125 can be an inorganic insulating layer or an organic insulating layer. In some cases, the fifth insulating layer 125 can be omitted.

[0147] When the fifth insulating layer 125 is provided, the fifth insulating layer 125 may have contact holes that expose the first source electrode / drain electrode 114. Through the contact holes provided in the fifth insulating layer 125, the first source electrode / drain electrode 114 of the transistor TFT can be connected to the connection electrode 135 provided on the fifth insulating layer 125.

[0148] Each of the first to fourth insulating layers 121, 122, 123, and 124 may be formed of an inorganic insulating layer. The inorganic insulating layer may be, for example, at least one of a silicon oxide layer, a silicon nitride layer, or a silicon oxynitride layer.

[0149] The first scattering pattern 131a and the second scattering pattern 131b can be disposed on the fifth insulating layer 125, and can be disposed in the green light-emitting portion (GEM) and the white light-emitting portion (WEM) respectively. A wrinkled pattern is formed on the upper surface of the first scattering pattern 131a and the second scattering pattern 131b by spin coating a transparent resin material and then irradiating the resin material with ultraviolet light.

[0150] The size and shape of the wrinkles formed on the upper surfaces of the first scattering pattern 131a and the second scattering pattern 131b can be controlled by the energy intensity and time / speed of the ultraviolet irradiation treatment. Furthermore, the patterning of the first scattering pattern 131a and the second scattering pattern 131b is performed by photolithography, which is beneficial for manufacturing large-area light-emitting display devices.

[0151] A red color filter (RCF), a green color filter (GCF), and a blue color filter (BCF) can be disposed on the fifth insulating layer 125 corresponding to the red sub-pixel (RSP), the green sub-pixel (GSP), and the blue sub-pixel (BSP). The red color filter (RCF) may contain a coloring pigment that selectively transmits red light, the green color filter (GCF) may contain a coloring pigment that selectively transmits green light, and the blue color filter (BCF) may contain a coloring pigment that selectively transmits blue light. Here, the green color filter (GCF) is disposed on the green emitting portion (GEM) to cover the first scattering pattern 131a, and has a thickness greater than that of the first scattering pattern 131a.

[0152] Each of the red color filter RCF, blue color filter BCF, and green color filter GCF is formed of an organic insulating material and has the property of selectively transmitting a predetermined wavelength and absorbing and shielding the remaining wavelengths. Furthermore, the red color filter RCF, blue color filter BCF, and green color filter GCF contain a material with a higher refractive index compared to the first scattering pattern 131a and the second scattering pattern 131b.

[0153] Additionally, the organic insulating layer 126 can be disposed on the second scattering pattern 131b of the red sub-pixel RSP, the green sub-pixel GSP, the blue sub-pixel BSP, the red filter RCF, the green filter GCF, the blue filter BCF, and the white sub-pixel WSP.

[0154] The organic insulating layer 126 may comprise an organic material. The organic material may include one or more of the following: acrylic resin, phenolic resin, polyimide resin, unsaturated polyester resin, polyamide resin, benzocyclobutene, polyphenylene resin, and polyphenylene sulfide resin. The organic insulating layer 126 may be formed of a material having a refractive index of about 1.6 to 2.5, which is higher than the refractive index of the first scattering pattern 131a and the second scattering pattern 131b.

[0155] The organic insulating layer 126 corresponding to each luminescent portion REM, GEM, BEM, or WEM can have a flat upper surface by performing a specified dry etching process, such that the organic insulating layer 126 in each luminescent portion REM, GEM, BEM, or WEM maintains a similar or identical thickness from the upper surface of each color filter RCF, GCF, or BCF or the second scattering pattern 131b. Even though the organic insulating layer 126 in each luminescent portion REM, GEM, BEM, or WEM has a flat upper surface, the upper surface of the organic insulating layer 126 in the green luminescent portion REM can be the highest, and the upper surface of the organic insulating layer 126 in the white luminescent portion WEM can be the lowest, due to the vertical thickness difference caused by the presence or absence of lower color filters RCF, GCF, and BCF, as well as the first scattering pattern 131a and the second scattering pattern 131b.

[0156] Contact holes can be provided in the organic insulating layer 126 on the first source / drain electrode 114 of the transistor TFT of each sub-pixel RSP, GSP, BSP or WSP, so that the upper surface of the connection electrode 135 can be exposed.

[0157] The first electrode 151 of the light-emitting device 150 can be connected to the connection electrode 135 of the transistor TFT of each sub-pixel RSP, GSP, BSP or WSP through the contact hole of the organic insulating layer 126, thereby conductively connecting to the transistor TFT.

[0158] The light-emitting device 150 includes a stack of a first electrode 151, an intermediate layer 152, and a second electrode 153.

[0159] The light-emitting display device emits light downwards. The first electrode 151 of the light-emitting device 150 may include a transparent oxide electrode formed of indium tin oxide (ITO), indium zinc oxide (IZO) or indium tin zinc oxide (ITZO), and the second electrode 153 may include a reflective electrode.

[0160] The second electrode 153 may include a monolayer structure formed of a material selected from aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), magnesium (Mg), calcium (Ca) and barium (Ba), or an alloy selected from two or more of these materials.

[0161] The edge of the first electrode 151 overlaps with the embankment 140.

[0162] The embankment 140 can be set by reflecting the surface steps on the upper surface of the organic insulating layer 126 between adjacent sub-pixels.

[0163] An encapsulation layer 160 is provided on the light-emitting device 150 to protect the light-emitting device 150.

[0164] Encapsulation layer 160 can be formed by alternately setting, for example, one or more inorganic encapsulation layers and organic encapsulation layers.

[0165] The following experiment will examine the light extraction effect using the scattering pattern of this disclosure.

[0166] In the following experiments, the structure with a scattering pattern having white sub-pixels will be defined as Experimental Example 1 EX1, and the structure without a scattering pattern will be defined as Experimental Example 2 EX2.

[0167] Figure 6 This is a diagram showing the emission angle of Experiment Example 1. Figure 7 This is a diagram showing the emission angle of Experiment Example 2.

[0168] Experimental Example 1 EX1 and Experimental Example 2 EX2 both have a substrate (GLS) 110, an organic insulating layer (OC) 126 and a light-emitting device (ED) 150, and only Experimental Example 1 EX1 also has a second scattering pattern 131b between the substrate 110 and the organic insulating layer 126.

[0169] like Figure 6 As shown, in Experimental Example 1 EX1, it can be confirmed that light scattering is concentrated on the second scattering pattern 131b, and light extraction can be performed at angles of up to 70° to 80° as indicated by the dashed lines, where the light substantially transmits through the area of ​​the substrate 110.

[0170] On the other hand, such as Figure 7 As shown in Experimental Example 2 EX2, it can be confirmed that the light generated from the light-emitting device ED is hardly refracted or scattered by the organic insulating layer (OC) and the substrate 110, making light extraction possible within an angle of approximately 66°.

[0171] In other words, the light-emitting display device according to one embodiment of the present disclosure has the same scattering pattern 131b as Experimental Example 1 EX1, which increases the light extraction angle to be wider than that of direct light, thereby reducing the brightness reduction when the viewing angle changes, maintaining the brightness efficiency at a certain level or higher even when the viewing angle changes, and thus improving the brightness viewing angle.

[0172] Furthermore, in one embodiment of the present disclosure, the light-emitting display device has scattering patterns 131a and 131b together in at least the green sub-pixel GSP and the white sub-pixel WSP, which have a significant impact on the viewing angle of white light, thereby enabling further improvement of the brightness viewing angle of white light.

[0173] Furthermore, a light-emitting display device according to one embodiment of the present disclosure has scattering patterns 131a and 131b alternately disposed in adjacent sub-pixels in the row direction, and thus, depending on the presence or absence of scattering patterns 131a and 131b, a vertical phase difference of organic insulating layer 126 is provided in adjacent sub-pixels, thereby increasing the resistance to leakage current due to the long paths in the dike 140 and intermediate layer 152 sequentially disposed on organic insulating layer 126, and thus significantly reducing or preventing the influence of leakage current between adjacent sub-pixels.

[0174] Figure 8 and Figure 9 This is a cross-sectional view showing an example of a light-emitting device of a light-emitting display apparatus according to an embodiment of the present disclosure.

[0175] In addition, such as Figure 8 and Figure 9 As shown, the light-emitting device of the light-emitting display apparatus of this disclosure has a structure in which at least intermediate layers 152 are commonly disposed in corresponding sub-pixels RSP, GSP, BSP and WSP.

[0176] For example, the light-emitting device may include multiple light-emitting stacks S1, S2, S3, and S4 between the first electrode 151 and the second electrode 153, and charge generation layers CGL1, CGL2, and CGL3 between the light-emitting stacks S1, S2, S3, and S4, such as Figure 8As shown. Typically, in the configuration of the light-emitting device 150 in each sub-pixel RSP, GSP, BSP, and WSP, the light-emitting device can emit white light, and the white light can be emitted as red light, blue light, and green light by passing through the red color filter RCF, blue color filter BCF, and green color filter GCF respectively disposed in the red sub-pixel RSP, blue sub-pixel BSP, and green sub-pixel GSP. In the green sub-pixel GSP, a first scattering pattern 131a is disposed under the green color filter GCF, such that green light GL, which is scattered in a wider direction, can pass through the substrate 110 and be emitted compared to the red sub-pixel RSP and blue sub-pixel BSP, which emit red light RL and blue light BL vertically as direct light passing through the substrate 110.

[0177] In addition, the white sub-pixel WSP emits white light from the light-emitting device and passes through the second scattering pattern 131b, so that white light WL can be emitted in a wider direction than the white light from the light-emitting device.

[0178] For example, in the intermediate layer 152, a first light-emitting stack S1 emitting red light, a second light-emitting stack S2 emitting blue light, a third light-emitting stack S3 emitting green light, and a fourth light-emitting stack S4 emitting blue light can be stacked sequentially.

[0179] Each light-emitting stack S1, S2, S3, or S4 may include: a light-emitting layer REML, BEML1, GEML, or BEML2; a first common layer CML11, CML12, CML13, or CML14 having hole transport properties and disposed beneath the light-emitting layer REML, BEML1, GEML, or BEML2; and a second common layer CML21, CML22, CML23, or CML24 having electron transport properties and disposed on the light-emitting layer REML, BEML1, GEML, or BEML2. The first common layers CML11, CML12, CML13, and CML14 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layers CML21, CML22, CML23, and CML24 may include a hole blocking layer, an electron transport layer, an electron injection layer, etc.

[0180] In other words, Figure 8 An intermediate layer 152 is shown, having a stacked arrangement of red light-emitting stack S1, a first blue light-emitting stack S2, a green light-emitting stack S3, and a second blue light-emitting stack S4 (R / B1 / G / B2) in the direction from the first electrode 151 to the second electrode 153. Figure 8As shown, even though each sub-pixel RSP, GSP, BSP, or WSP includes a light-emitting device 150 in the same manner, a red color filter RCF, a blue color filter BCF, a first scattering pattern 131a, and a green color filter GSP are disposed between the light-emitting device 150 and the substrate 110, so that each sub-pixel RSP, BSP, or GSP can represent a separate color different from white, and the white sub-pixel WSP without a color filter can represent scattered white light by allowing white light emitted from the light-emitting device 150 to pass through the second scattering pattern 131b.

[0181] Figure 8 An example is shown where the intermediate layer 152 includes four light-emitting stacks and three charge-generating layers.

[0182] However, the light-emitting devices according to embodiments of this disclosure are not limited thereto. For example, with Figure 8 The example shown, in which multiple light-emitting stacks are arranged by color when multiple light-emitting stacks are arranged between the first electrode and the second electrode, is different. Multiple light-emitting stacks can be arranged between the first electrode and the second electrode in the following order: red light-emitting stack, green light-emitting stack, and first blue light-emitting stack and second blue light-emitting stack (R / G / B1 / B2); green light-emitting stack, red light-emitting stack, and first blue light-emitting stack and second blue light-emitting stack (G / R / B1 / B2); or first blue light-emitting stack, red light-emitting stack, green light-emitting stack and second blue light-emitting stack (B1 / R / G / B2); or they can be arranged in other orders.

[0183] The reason for setting two blue light-emitting stacks in the light-emitting device is to compensate for the relatively low efficiency of blue compared to other colors.

[0184] When a voltage greater than or equal to a certain level is applied between the first electrode 151 and the second electrode 153, the above-mentioned light-emitting devices, including the first light-emitting stack to the fourth light-emitting stack S1, S2, S3 and S4, can emit white light.

[0185] Unlike the example shown, the intermediate layer of the light-emitting device 150 may have different arrangements of multiple light-emitting stacks and charge-generating layers.

[0186] Figure 9 An example of a light-emitting device 150 having three light-emitting stacks S1, S2, and S3 between a first electrode 151 and a second electrode 153 is shown. Each of the first stack S1 and the third stack S3 may include a first blue light-emitting layer BMEL1 or a second blue light-emitting layer BEML2 that emits blue light, and the second stack S2 may include a plurality of phosphorescent light-emitting layers REML, YGEML, and GEML that emit wavelengths longer than blue.

[0187] Additionally, each light-emitting stack S1, S2, or S3 may include: a light-emitting layer or a light-emitting layer stack BEML1, REML / YGEML / GEML, or BEML2; a first common layer CML11, CML12, or CML13 with hole transport properties under the light-emitting layer or the light-emitting layer stack BEML1, REML / YGEML / GEML, or BEML2; and a second common layer CML21, CML22, or CML23 with electron transport properties on the light-emitting layer or the light-emitting layer stack BEML1, REML / YGEML / GEML, or BEML2. The first common layers CML11, CML12, and CML13 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layers CML21, CML22, and CML23 may include a hole blocking layer, an electron transport layer, an electron injection layer, etc.

[0188] As described above, the light-emitting display device according to the embodiments of the present disclosure has a structure in which multiple stacked light-emitting devices 150 are commonly present in the sub-pixels. At least in the green light-emitting portion and the white light-emitting portion, there are scattering patterns 131a and 131b between the light-emitting devices 150 and the substrate 110 in the light-emitting path from the light-emitting devices 150 to the substrate 110. This improves the brightness viewing angle and increases the resistance of the path to leakage current between adjacent sub-pixels due to the difference between adjacent sub-pixels caused by the presence or absence of color filters and the presence or absence of scattering patterns between adjacent sub-pixels. Thus, the effect of leakage current is prevented or significantly reduced.

[0189] As is apparent from the above description, the light-emitting display device according to the embodiments of this disclosure can provide a scattering pattern to the sub-pixels that dominate the brightness expression, thereby improving the brightness viewing angle.

[0190] The light-emitting display device according to embodiments of the present disclosure can provide a random folded pattern on the upper surface of the scattering pattern, so that the scattering pattern is not wavelength dependent, thereby improving the brightness viewing angle of white light.

[0191] An embodiment of the light-emitting display device according to this disclosure includes a scattering pattern disposed on the light-emitting side of at least white sub-pixels and green sub-pixels, thereby enabling the reduction of brightness deviation according to viewing changes.

[0192] The light-emitting display device according to embodiments of this disclosure has different configurations of overlapping organic insulating layers between adjacent sub-pixels, such that dams are formed on the organic insulating layers with different vertical phases between adjacent sub-pixels, thereby increasing the path of the intermediate layer between adjacent sub-pixels and thus preventing or reducing leakage current between adjacent sub-pixels. Therefore, leakage light emission between adjacent sub-pixels due to light emission from a designated sub-pixel can be prevented, and visibility can be improved.

[0193] The light-emitting display device of this disclosure provides predetermined sub-pixels with scattering patterns that can be easily patterned over a large area between the light-emitting device and the substrate. Furthermore, by altering the scattering patterns between adjacent sub-pixels and the stacking structure of the color filters, the path of the intermediate layer between adjacent sub-pixels is increased, thereby preventing leakage current and thus preventing leakage between adjacent sub-pixels. Therefore, the light-emitting display device of this disclosure is sustainably applicable in terms of improving brightness and viewing angle and preventing leakage light emission, thereby enabling the achievement of environmental, social, and governance (ESG) objectives.

[0194] An embodiment of the present disclosure of a light-emitting display device may include: a substrate including red light-emitting portions, green light-emitting portions, blue light-emitting portions and white light-emitting portions spaced apart from each other; a red color filter at the red light-emitting portions, a green color filter at the green light-emitting portions and a blue color filter at the blue light-emitting portions; a first scattering pattern between the substrate and the green color filter; a second scattering pattern on the substrate at the white light-emitting portions; an organic insulating layer configured to cover the red color filter, the green color filter, the blue color filter and the second scattering pattern; a light-emitting device on the organic insulating layer, the light-emitting device including a plurality of first electrodes spaced apart from each other at the red light-emitting portions, the green light-emitting portions, the blue light-emitting portions and the white light-emitting portions; and a dam configured to expose the plurality of first electrodes at the red light-emitting portions, the green light-emitting portions, the blue light-emitting portions and the white light-emitting portions.

[0195] In one embodiment of the light-emitting display device according to the present disclosure, each of the first scattering pattern and the second scattering pattern may have a random folding pattern on its upper surface.

[0196] In one embodiment of the light-emitting display device according to the present disclosure, each of the first scattering pattern and the second scattering pattern may have multiple curved surfaces protruding toward the organic insulating layer.

[0197] In one embodiment of the light-emitting display device according to this disclosure, the upper surface of the first scattering pattern may contact a green color filter. The upper surface of the second scattering pattern may contact an organic insulating layer. The upper surfaces of the green color filter, which is configured to overlap with the first scattering pattern, and the upper surfaces of the organic insulating layer, which is configured to overlap with the second scattering pattern, may be flat.

[0198] In a light-emitting display device according to one embodiment of the present disclosure, the first scattering pattern and the second scattering pattern may have the same vertical phase on the substrate. The first electrode at the green light-emitting portion may have a higher vertical phase than the first electrodes at the red and blue light-emitting portions. The first electrode at the white light-emitting portion may have a lower vertical phase than the first electrodes at the red and blue light-emitting portions.

[0199] In one embodiment of the light-emitting display device according to this disclosure, the first electrode at the green light-emitting portion can contact a flat upper surface of the organic insulating layer having a first vertical distance from the substrate. The first electrode at the white light-emitting portion can contact a flat upper surface of the organic insulating layer having a second vertical distance from the substrate less than the first vertical distance. The first electrodes at the red and blue light-emitting portions can contact a flat upper surface of the organic insulating layer having a third vertical distance from the substrate between the first and second vertical distances.

[0200] In one embodiment of the light-emitting display device according to the present disclosure, the maximum thickness of the first scattering pattern may be less than the thickness of the green color filter.

[0201] In one embodiment of the light-emitting display device according to the present disclosure, each of the maximum thickness of the first scattering pattern and the maximum thickness of the second scattering pattern may be less than the maximum thickness of the organic insulating layer.

[0202] In one embodiment of the light-emitting display device according to the present disclosure, the first scattering pattern may have a lower refractive index than the green color filter, and the second scattering pattern may have a lower refractive index than the organic insulating layer.

[0203] In a light-emitting display device according to one embodiment of the present disclosure, the upper surface of the organic insulating layer may have a first curved surface and a second curved surface, the first curved surface having a vertical phase that changes around a region of green light-emitting portion, and the second curved surface having a vertical phase that changes around a region of white light-emitting portion.

[0204] The embankment can be set on the first curved surface and the second curved surface.

[0205] In one embodiment of the light-emitting display device according to the present disclosure, a first curved surface may be disposed between the green light-emitting portion and the red light-emitting portion, and between the green light-emitting portion and the blue light-emitting portion. A second curved surface may be disposed between the white light-emitting portion and the blue light-emitting portion, and between the white light-emitting portion and the red light-emitting portion.

[0206] In one embodiment of the light-emitting display device according to the present disclosure, the light-emitting device may include an intermediate layer on a plurality of first electrodes and a second electrode on the intermediate layer. The intermediate layer may be disposed on the upper surface of the plurality of first electrodes at each of the red light-emitting portion, green light-emitting portion, blue light-emitting portion and white light-emitting portion, and may also be disposed on the upper surface of the intermediate layer.

[0207] In one embodiment of the light-emitting display device according to the present disclosure, the light-emitting devices may have the same structure in the red light-emitting portion, the green light-emitting portion, the blue light-emitting portion, and the white light-emitting portion.

[0208] The light-emitting device may include an intermediate layer on a plurality of first electrodes and a second electrode on the intermediate layer, the intermediate layer including a plurality of light-emitting stacks and at least one charge-generating layer.

[0209] Each of the multiple light-emitting stacks may include a hole transport layer, at least one light-emitting layer, and an electron transport layer.

[0210] In one embodiment of the light-emitting display device according to the present disclosure, the light-emitting device includes an intermediate layer on a plurality of first electrodes and a second electrode on the intermediate layer.

[0211] The intermediate layer may include a red light-emitting stack, a first charge-generating layer, a first blue light-emitting stack, a second charge-generating layer, a green light-emitting stack, a third charge-generating layer, and a second blue light-emitting stack between the first electrode and the second electrode.

[0212] A light-emitting display device according to one embodiment of this disclosure may further include pixel circuitry between a substrate and an organic insulating layer. The pixel circuitry may overlap with the substrate.

[0213] From the above description, it should be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of this disclosure. Therefore, the technical scope of this disclosure should not be limited to the above detailed description, but should be defined by the scope of the claims.

Claims

1. A light-emitting display device, comprising: The substrate includes red light-emitting portions, green light-emitting portions, blue light-emitting portions and white light-emitting portions spaced apart from each other; A red filter at the red emitting portion, a green filter at the green emitting portion, and a blue filter at the blue emitting portion; A first scattering pattern between the substrate and the green filter; A second scattering pattern on the substrate at the white light-emitting portion; An organic insulating layer is configured to cover the red filter, the green filter, the blue filter, and the second scattering pattern; A light-emitting device on the organic insulating layer, the light-emitting device comprising a plurality of first electrodes spaced apart from each other at the red light-emitting portion, the green light-emitting portion, the blue light-emitting portion, and the white light-emitting portion; as well as A dam is configured to expose the plurality of first electrodes of the red light-emitting portion, the green light-emitting portion, the blue light-emitting portion, and the white light-emitting portion.

2. The light-emitting display device according to claim 1, wherein Each of the first scattering pattern and the second scattering pattern has a random folding pattern on its upper surface.

3. The light-emitting display device according to claim 1, wherein Each of the first scattering pattern and the second scattering pattern has multiple curved surfaces protruding toward the organic insulating layer.

4. The light-emitting display device according to claim 1, wherein: The upper surface of the first scattering pattern is in contact with the green color filter, and the upper surface of the second scattering pattern is in contact with the organic insulating layer; and The upper surface of the green filter, which is configured to overlap with the first scattering pattern, and the upper surface of the organic insulating layer, which is configured to overlap with the second scattering pattern, are flat.

5. The light-emitting display device according to claim 1, wherein: The first scattering pattern and the second scattering pattern have the same vertical phase on the substrate; The first electrode at the green emitting portion has a higher vertical phase compared to the first electrodes at the red and blue emitting portions; and The first electrode at the white luminescent portion has a lower vertical phase compared to the first electrodes at the red luminescent portion and the blue luminescent portion.

6. The light-emitting display device according to claim 5, wherein: The first electrode at the green light-emitting portion is in contact with the flat upper surface of the organic insulating layer at a first vertical distance from the substrate; The first electrode at the white light-emitting portion contacts the flat upper surface of the organic insulating layer, which has a second vertical distance from the substrate that is less than the first vertical distance; and The first electrode at the red emitting portion and the blue emitting portion is in contact with the flat upper surface of the organic insulating layer at a third vertical distance from the substrate, which is between the first vertical distance and the second vertical distance.

7. The light-emitting display device according to claim 1, wherein The maximum thickness of the first scattering pattern is less than the thickness of the green filter.

8. The light-emitting display device according to claim 1, wherein The maximum thickness of the first scattering pattern and the maximum thickness of the second scattering pattern are each less than the maximum thickness of the organic insulating layer.

9. The light-emitting display device according to claim 1, wherein: The first scattering pattern has a lower refractive index compared to the green filter; and The second scattering pattern has a lower refractive index compared to the organic insulating layer.

10. The light-emitting display device according to claim 1, wherein: The upper surface of the organic insulating layer has a first curved surface and a second curved surface. The first curved surface has a vertical phase that changes around the region of the green luminescent portion, and the second curved surface has a vertical phase that changes around the region of the white luminescent portion. The embankment is set on the first curved surface and the second curved surface.

11. The light-emitting display device according to claim 10, wherein: The first curved surface is disposed between the green emitting portion and the red emitting portion, and between the green emitting portion and the blue emitting portion; and The second curved surface is disposed between the white luminescent portion and the blue luminescent portion, and between the white luminescent portion and the red luminescent portion.

12. The light-emitting display device according to claim 10, wherein: The light-emitting device includes an intermediate layer on the plurality of first electrodes and a second electrode on the intermediate layer; and The intermediate layer is disposed on the upper surface of the plurality of first electrodes at each of the red emitting portion, the green emitting portion, the blue emitting portion, and the white emitting portion, and is disposed on the upper surface of the embankment.

13. The light-emitting display device according to claim 1, wherein: The light-emitting device has the same structure in the red light-emitting portion, the green light-emitting portion, the blue light-emitting portion, and the white light-emitting portion; The light-emitting device includes an intermediate layer on the plurality of first electrodes and a second electrode on the intermediate layer, the intermediate layer including a plurality of light-emitting stacks and at least one charge-generating layer; and Each of the plurality of light-emitting stacks includes a hole transport layer, at least one light-emitting layer, and an electron transport layer.

14. The light-emitting display device according to claim 1, wherein The light-emitting device includes an intermediate layer on the plurality of first electrodes and a second electrode on the intermediate layer. The intermediate layer includes a red light-emitting stack, a first charge-generating layer, a first blue light-emitting stack, a second charge-generating layer, a green light-emitting stack, a third charge-generating layer, and a second blue light-emitting stack between the first electrode and the second electrode.

15. The light-emitting display device according to claim 1, further comprising a pixel circuit between the substrate and the organic insulating layer. wherein The pixel circuit overlaps with the embankment.

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