Light-emitting display device

Abstract

A light emitting display device is disclosed. The light emitting display device includes: a light emitting device including a first electrode, an intermediate layer, and a second electrode at each of a plurality of light emitting areas on a substrate; a first capping layer and a second capping layer sequentially disposed on the light emitting device and configured to have different refractive indexes; a first pattern defining layer adjacent to a side surface of the second electrode and disposed at each of a plurality of transmissive regions on the substrate; and a second pattern defining layer adjacent to a side surface of the second cover layer and configured to overlap the first pattern defining layer.

Description

Technical Field

[0001] The present disclosure relates to a light-emitting display device, and more particularly to a light-emitting display device capable of improving the transmittance of a transmissive region and a method of manufacturing the same. Background Art

[0002] As society enters the information age, the field of display devices for visually displaying electrical information signals is rapidly developing. Accordingly, research into improving the performance of various display devices, such as reducing thickness, weight, and power consumption, continues.

[0003] Among them, a light-emitting display device includes a light-emitting device as a self-luminous device and does not require any separate light source in a non-light-emitting device, thereby reducing weight and thickness.

[0004] A display device panel may be provided with a sensor. As the size of the display device panel has recently decreased or evolved into a borderless or seamless structure, the sensor may be located on the display device panel.

[0005] The descriptions provided in the background art section should not be assumed to be prior art merely because they are mentioned in the background art section or are associated with the descriptions in the background art section. The descriptions in the background art section may include information describing one or more aspects of the subject technology, and the descriptions in this section do not limit the present invention. Summary of the Invention

[0006] The inventors have recognized that there is a problem of deteriorated perceived image quality due to the low transmittance of the sensor. Accordingly, the present disclosure relates to a light-emitting display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the related art.

[0007] An object of the present disclosure is to provide a light-emitting display device having a first pattern defining layer adjacent to a second electrode in a region corresponding to a transmissive region of a sensor and a second pattern defining layer adjacent to a second cover layer to improve the transmittance of the transmissive region, and thus the overall transmittance of the sensor can be improved to improve the perceived image quality.

[0008] Additional advantages, objects, and features of the present disclosure will be partially set forth in the following description, and partially will be obvious to those of ordinary skill in the art upon examination of the following description, or may be learned from the practice of the present disclosure. The objects and other advantages of the present disclosure may be realized and attained by the structures particularly pointed out in the written description and claims as well as the drawings.

[0009] The light-emitting display device of the present disclosure has a first pattern defining layer adjacent to the second electrode and a second pattern defining layer adjacent to the second cover layer in a region corresponding to the transmissive region of the sensor, so as to improve the transmittance of the transmissive region, and thus the overall transmittance of the sensor can be improved to improve the perceived image quality.

[0010] To achieve these objects and other advantages and in accordance with the purpose of the present disclosure, as implemented and broadly described herein, a light-emitting display device includes: a light-emitting device including a first electrode, an intermediate layer, and a second electrode at each of a plurality of light-emitting regions on a substrate; a first cover layer and a second cover layer sequentially disposed on the light-emitting device and configured to have different refractive indices; a first pattern defining layer adjacent to a side surface of the second electrode and disposed in each of a plurality of transmissive regions on the substrate; and a second pattern defining layer adjacent to a side surface of the second cover layer and configured to overlap with the first pattern defining layer.

[0011] It should be understood that the foregoing general description and the following detailed description of the present disclosure are both exemplary and explanatory, and are intended to provide further explanation of the claimed present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are included to provide a further understanding of the present disclosure and are incorporated into and constitute a part of this application. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure. In the drawings:

[0013] Figure 1 is a plan view of a light-emitting display device of the present disclosure according to an exemplary embodiment;

[0014] Figure 2 is a schematic cross-sectional view of a light-emitting display device of the present disclosure according to a first exemplary embodiment;

[0015] Figure 3 is a schematic plan view of a light-emitting display device of the present disclosure according to a first exemplary embodiment;

[0016] Figure 4 is a cross-sectional view of a light-emitting display device of the present disclosure according to a first exemplary embodiment;

[0017] Figure 5 is a schematic plan view of a light-emitting display device of the present disclosure according to a second exemplary embodiment;

[0018] Figure 6 is a cross-sectional view of a light-emitting display device of the present disclosure according to a second exemplary embodiment;

[0019] Figure 7 is a schematic cross-sectional view of a light-emitting display device of the present disclosure according to a third exemplary embodiment;

[0020] Figure 8 is a cross-sectional view of a light-emitting display device of the present disclosure according to a third exemplary embodiment;

[0021] Figure 9A and Figure 9B is a schematic plan view showing various shapes of the light-emitting display device of the present disclosure;

[0022] Figure 10A and Figure 10B is a schematic cross-sectional view showing various shapes of the light-emitting display device of the present disclosure;

[0023] Figure 11A , Figure 11B , Figure 11C and Figure 11D are schematic plan views showing various shapes of the light-emitting display device of the present disclosure;

[0024] Figure 12 is a cross-sectional view of a light-emitting display device of the present disclosure according to a fourth exemplary embodiment; and

[0025] Figure 13 is a graph showing the transmittance of the light-emitting display device of the present disclosure.

[0026] Throughout the drawings and the detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the relative sizes and descriptions of these elements may be exaggerated. Detailed Description

[0027] Now, embodiments of the present disclosure will be described in detail, and examples thereof may be shown in the drawings. The progress of the described processing steps and / or operations is an example; however, the order of the steps and / or operations is not limited to that described herein and may be changed as known in the art, except for steps and / or operations that must occur in a specific order. The names of the various elements used in the following explanations may be selected merely for the convenience of writing the specification and may therefore be different from the names used in actual products.

[0028] Through the description of various examples with reference to the drawings below, the advantages and features of the present disclosure and the methods for achieving them will become apparent. However, the present disclosure is not limited to the various examples disclosed herein but may be implemented in various different forms. The examples of the present disclosure are provided to make the description of the present disclosure thorough and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the examples of the present disclosure are only defined by the claims.

[0029] The shapes, sizes, ratios, angles, quantities, etc. shown in the drawings for illustrating various exemplary embodiments of the present disclosure are provided for illustrative purposes only, and the present disclosure is not limited to what is shown in the 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, detailed descriptions of technologies or configurations related to the present disclosure may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure.

[0030] When terms such as "comprising", "having", "including", "containing", "constituting", "made of", "formed by", "composed of" are used throughout the present disclosure, there may be additional components unless "only" is used. Unless otherwise specifically stated, components described in the singular form cover multiple ones of them.

[0031] The shapes, sizes, dimensions (e.g., length, width, height, thickness, radius, diameter, area, etc.), ratios, angles, quantities, etc. of the elements shown in the drawings for describing the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, the same reference numerals generally denote the same elements.

[0032] The dimensions including the size and thickness of the respective components shown in the drawings are shown for convenience of description, and the present disclosure is not limited to the size and thickness of the shown components. However, it should be noted that the relative dimensions including the relative size, position, and thickness of the components shown in the respective drawings submitted here are part of the present disclosure.

[0033] The components included in the exemplary embodiments of the present disclosure should be construed to include a range of errors even if there is no additional specific description thereof.

[0034] When using terms describing positional relationships such as "on", "above", "over", "under", "below", "beside", "beneath", "near", "close to", "adjacent to", "on the side of", "proximate to" in describing various exemplary embodiments of the present disclosure, at least one intermediate element may exist between two elements unless "immediately" or "directly" is also used.

[0035] Spatial relative terms, such as "below", "beneath", "under", "lower", "above", "upper", etc., may be used in this document to describe the relationship of one element or feature to another element or feature as shown in the figures. It should be understood that, in addition to the orientation shown in the figures, spatial relative terms may also include different orientations of an element during use or operation. For example, if an element in the figure is inverted, an element described as "below" or "beneath" another element or feature will be oriented "above" the other element or feature. Thus, the exemplary term "below" can include both orientations of below and above. Similarly, the exemplary terms "above" or "over" can include both orientations of above and below.

[0036] When an element or layer is disposed "on" another element or layer, another layer or another element may be directly interposed on the other element or between two elements or layers.

[0037] When describing various exemplary embodiments of the present disclosure, when using time - related terms such as "after", "subsequently", "then", and "before", non - consecutive cases may be included, unless "exactly" or "directly" is also used.

[0038] When describing various exemplary embodiments of the present disclosure, terms such as "first", "second", "A", "B", "(A)", or "(B)" may be used to describe various components, but these terms are only intended to distinguish the same or similar components from each other regionally. Thus, throughout the present disclosure, unless otherwise specifically mentioned, the "first" component may be the same as the "second" component within the technical concept of the present disclosure.

[0039] The "first horizontal axis direction", "second horizontal axis direction", and "vertical axis direction" should not be interpreted only as geometric relationships where the relationships between these directions are perpendicular, and may have a broader directivity within the range where the components of the present disclosure can function.

[0040] The term "at least one" should be understood to include all possible combinations from one or more related items. For example, "at least one of the first item, the second item, or the third item" means each of the first item, the second item, and the third item, and all combinations of two or more of the first item, the second item, and the third item.

[0041] As used herein, the term "device" may refer to a display device including a display panel and a driver for driving the display panel. Examples of the display device may include light-emitting elements and the like. Additionally, examples of the device may include a laptop computer, a television, a computer monitor, an automotive device, a wearable device, and an automotive equipment device, and complete products or end-product sets of electronic devices (or equipment) or sets of devices (or equipment) respectively including light-emitting elements and the like, such as mobile electronic devices such as smartphones or electronic tablets. However, embodiments of the present disclosure are not limited thereto.

[0042] Corresponding features of various examples of the present disclosure may be partially or fully coupled or combined with each other, and may be interconnected or operated in different ways technically, and the corresponding examples may be implemented independently of each other or implemented together in an associated relationship.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments belong. It will be further understood that terms, such as those defined in a commonly used dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the related art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0044] In aspects of the present disclosure, for ease of description, the source electrode and the drain electrode are distinguished from each other. However, the source electrode and the drain electrode may be used interchangeably. The source electrode may be the drain electrode, and the drain electrode may be the source electrode. In addition, the source electrode in any aspect of the present disclosure may be the drain electrode in another aspect of the present disclosure, and the drain electrode in any aspect of the present disclosure may be the source electrode in another aspect of the present disclosure.

[0045] When reference numerals are given to components in the corresponding drawings, the same components may have the same reference numerals as much as possible even if they are shown in different drawings. Additionally, for ease of explanation, the scale of the components shown in the drawings may be different from the actual scale, and thus the present disclosure is not limited to the scale shown in the drawings.

[0046] Figure 1 is a plan view of a light-emitting display device 1000 of the present disclosure according to an exemplary embodiment.

[0047] Referring to Figure 1 , a light-emitting display device 1000 of the present disclosure according to an exemplary embodiment may include a substrate 10. The substrate 10 includes a display area AA and a non-display area NA, and a sensor CA defined as a designated area may be included in the display area AA. The sensor CA may include a plurality of transmissive areas T and a plurality of pixels P.

[0048] The substrate 10 may be divided into a display area AA where the screen appears and a non-display area NA where the screen does not appear. The non-display area may be an area adjacent to the display area. Further, the non-display area may be an area adjacent to and configured to surround the display area. However, the present disclosure is not limited thereto.

[0049] For example, the non-display area may include a first non-display area located outside the display area in a first direction, a second non-display area located outside the display area in a second direction intersecting the first direction, a third non-display area located outside the display area in a direction opposite to the first direction, and a fourth non-display area located outside the display area in a direction opposite to the second direction.

[0050] For another example, the boundary area between the display area and the non-display area may be curved such that the non-display area may be located below the display area. In this case, when the user views the display device from the front, little or no non-display area may be visible to the user.

[0051] The substrate 10 may be formed as a glass substrate or a flexible plastic substrate. In some exemplary embodiments, the substrate 10 may be made of a flexible polymer film. For example, the flexible polymer film may be made of any one of polyamide, polyimide (PI), polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polycarbonate (PC), polyethersulfone (PES), polyarylate (PAR), polysulfone (PSF), cycloolefin copolymer (COC), triacetyl cellulose (TAC), polyvinyl alcohol (PVA), and polystyrene (PS), and the present disclosure is not limited thereto. For example, the flexible plastic substrate may include polyimide or polyamide.

[0052] The display area AA may include a plurality of pixels P. In particular, the display area AA may include a sensor CA in a predetermined area. The sensor CA may include a plurality of pixels P and a plurality of transmissive areas T. As Figure 1 shown, the plurality of pixels P and the plurality of transmissive areas T may be alternately arranged in a row direction and a column direction. However, the arrangement structure of the plurality of pixels P and the plurality of transmissive areas T of the present disclosure is not limited thereto. Thus, the light-emitting display device 1000 of the present disclosure may include the plurality of pixels P and the plurality of transmissive areas T in the sensor CA, and may output a full-screen image through the plurality of pixels P in the entire display area AA.

[0053] The sensor CA may be an area with a low pixel density within the display area AA of the light-emitting display device 1000. The sensor CA may receive or transceive various sensed lights, such as infrared rays of external light. For example, the sensor CA may include various sensors, such as a camera, an infrared camera, an infrared sensor, and an illuminance sensor. To this end, the light-emitting display device 1000 may have a transmissive area T between the plurality of pixels P to allow the sensor CA to ensure the light transmittance of the panel.

[0054] The plurality of pixels P may be defined by a gate line and a data line that cross each other on the substrate 10 to form a matrix. The plurality of sub-pixels SP are the smallest units that make up the display area, and n sub-pixels SP form one pixel. Each of the plurality of sub-pixels SP may emit light having different wavelengths from each other. The plurality of sub-pixels may include a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit light of different colors from each other. The plurality of pixels P of the present disclosure may include sub-pixels that emit red light, green light, and blue light. However, the plurality of pixels P is not limited thereto, and may also include, for example, sub-pixels that emit white light. The plurality of sub-pixels SP may be variously modified in terms of color and configuration as needed. However, the present disclosure is not limited thereto.

[0055] For example, the plurality of sub-pixels SP may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the red sub-pixel, the green sub-pixel, and the blue sub-pixel may be arranged in a repeating manner. Alternatively, the plurality of sub-pixels SP may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, and the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel may be arranged in a repeating manner, or the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel may be arranged in a quadrilateral type. For example, the red sub-pixel, the blue sub-pixel, and the green sub-pixel may be sequentially arranged along the row direction, or the red sub-pixel, the blue sub-pixel, the green sub-pixel, and the white sub-pixel may be sequentially arranged along the row direction. However, in the embodiments of the present disclosure, the color type, the arrangement type, and the arrangement order of the sub-pixels are not limited, and may be configured in various forms according to the light-emitting characteristics, the device lifetime, and the device specifications.

[0056] In addition, according to the light-emitting characteristics, the sub-pixels may have different light-emitting areas. For example, a sub-pixel that emits light of a color different from that of the blue sub-pixel may have a light-emitting area different from that of the blue sub-pixel. For example, the red sub-pixel, the blue sub-pixel, and the green sub-pixel or the red sub-pixel, the blue sub-pixel, the white sub-pixel, and the green sub-pixel may each have a different light-emitting area.

[0057] Figure 2 is a schematic cross-sectional view of a light-emitting display device according to a first exemplary embodiment of the present disclosure, and Figure 3Schematic plan view of a light-emitting display device according to a first exemplary embodiment of the present disclosure. In addition, Figure 4 Cross-sectional view of a light-emitting display device according to a first exemplary embodiment of the present disclosure.

[0058] Referring to Figure 2 , the light-emitting display device of the present disclosure may sequentially include a first insulating layer IL1, a second insulating layer IL2, a first electrode E1, an intermediate layer EL, a second electrode E2, a first cover layer CL1, and a second cover layer CL2 in a region corresponding to a pixel P on a substrate 10, and may sequentially include a first insulating layer IL1, a second insulating layer IL2, a bank BK, an intermediate layer EL, a first pattern defining layer PL1, a first cover layer CL1, and a second pattern defining layer PL2 in a region corresponding to a transmissive region T on the substrate 10. Here, Figure 2 The pixel P in represents a region corresponding to a light-emitting region EA. The light-emitting display device of the present disclosure according to the first exemplary embodiment may have a first pattern defining layer PL1 in a transmissive region T adjacent to the second electrode E2, and may have a second pattern defining layer PL2 in a transmissive region T adjacent to the second cover layer CL2.

[0059] Referring to Figure 3 , the first pattern defining layer PL1 and the second pattern defining layer PL2 according to the first exemplary embodiment are formed to have the same area, and thus may respectively have the same first width L1 and second width L2. The first pattern defining layer PL1 and the second pattern defining layer PL2 may be disposed on the substrate 10 to cover the entire transmissive region T.

[0060] Referring to Figure 4 , the light-emitting display device of the present disclosure includes: a light-emitting device 160 including a first electrode 161, an intermediate layer 163, and a second electrode 165 in each of a plurality of light-emitting regions EA disposed on a substrate 10; a first cover layer 181 and a second cover layer 183 sequentially disposed on the light-emitting device 160 and having different refractive indices; a first pattern defining layer 191 adjacent to a side surface of the second electrode 165 and disposed in each of a plurality of transmissive regions T; and a second pattern defining layer 193 adjacent to a side surface of the second cover layer 183 and configured to overlap with the first pattern defining layer 191.

[0061] In addition, the light-emitting display device of the present disclosure may include a transistor (thin-film transistor) TFT and a light-emitting device 160 in a region corresponding to the light-emitting region EA on the substrate 10, and the light-emitting device 160 includes a first electrode 161, an intermediate layer 163, and a second electrode 165 connected to the transistor TFT.

[0062] The transistor may be a thin film transistor (TFT). The active layer of the thin film transistor (TFT) may be formed of a semiconductor material, such as an oxide semiconductor, an amorphous semiconductor, or a polycrystalline semiconductor, but is not limited thereto.

[0063] The oxide semiconductor material may have an excellent effect of preventing leakage current and relatively low manufacturing cost. The oxide semiconductor may be made of metal oxides such as zinc (Zn), indium (In), gallium (Ga), tin (Sn), and titanium (Ti), or a combination of metals such as zinc (Zn), indium (In), gallium (Ga), tin (Sn), or titanium (Ti) and their oxides. Specifically, the oxide semiconductor may include zinc oxide (ZnO), zinc tin oxide (ZTO), zinc indium oxide (ZIO), indium oxide (InO), titanium oxide (TiO), indium gallium zinc oxide (IGZO), indium zinc tin oxide (IZTO), indium zinc oxide (IZO), indium gallium tin oxide (IGTO), and indium gallium oxide (IGO), but is not limited thereto.

[0064] The polycrystalline semiconductor material has a fast moving speed of carriers such as electrons and holes, and thus has a high mobility, low energy consumption, and excellent reliability. The polycrystalline semiconductor may be made of polycrystalline silicon (poly-Si), but is not limited thereto.

[0065] The amorphous semiconductor material may be made of amorphous silicon (a-Si), but is not limited thereto.

[0066] On the substrate 10, various signal lines such as data lines and gate lines, and circuit elements including transistors such as switching thin film transistors and driving thin film transistors and capacitors may be formed in each sub-pixel. For ease of explanation, the present disclosure shows an arbitrary transistor TFT driving one light emitting device 160.

[0067] The transistor TFT includes an active layer 30, a gate electrode 43 overlapping the channel region 35 of the active layer 30, and source electrodes 51 and drain electrodes 53 connected to both sides of the active layer 30, and a gate insulating film 41 is interposed between the channel region 35 of the active layer 30 and the gate electrode 43.

[0068] The active layer 30 of the transistor TFT has source regions 31 and drain regions 33 located on both sides of the channel region 35. Each of the source region 31 and the drain region 33 is formed of a semiconductor material implanted with n-type or p-type impurities. The channel region 35 overlapping the gate electrode 43 may be formed of a semiconductor material in which n-type or p-type impurities are not implanted.

[0069] The gate electrode 43 of the transistor TFT is set to have the same width as the channel region 35 of the active layer 30 to overlap with the channel region 35, with the gate insulating film 41 interposed therebetween. The gate insulating film 41 is formed in the same pattern as the gate electrode 43 to overlap with the channel region 35 of the active layer 30. For example, the gate electrode 43 can be formed as a single-layer or multi-layer structure formed of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof. In addition, the gate insulating film 41 can be formed of an inorganic insulating material, such as silicon oxide (SiO x ) film, silicon nitride (SiN x ) film, silicon oxynitride (SiO x N y ) or a multi-layer film thereof. For example, the gate insulating film 41 can be formed by a single-layer or multi-layer inorganic film. For example, the single-layer inorganic film can be a silicon oxide (SiOx) film or a silicon nitride (SiNx) film, and the multi-layer inorganic film can be formed by alternately laminating one or more layers of silicon oxide (SiOx) film, one or more layers of silicon nitride (SiNx) film, and one or more layers of amorphous silicon (a-Si), but the present disclosure is not limited thereto.

[0070] The light-shielding layer 21 on the substrate 10 overlaps at least with the channel region 35 of the active layer 30 and is disposed below the active layer 30. The light-shielding layer 21 prevents external light from penetrating the substrate 10 and transmitting to the transistor TFT. For example, the light-shielding layer 21 can be formed as a single layer of a metal material such as molybdenum (Mo), titanium (Ti), aluminum neodymium (AlNd), aluminum (Al), chromium (Cr), or an alloy thereof, or a multi-layer structure using the same.

[0071] The buffer film 20 on the light-shielding layer 21 is provided to cover the light-shielding layer 21. For example, the buffer film 20 can be formed as a single-layer or multi-layer structure using silicon oxide (SiO x ) and / or silicon nitride (SiN x ). For example, the buffer film 20 can be formed by a single-layer or multi-layer inorganic film. For example, the single-layer inorganic film can be a silicon oxide (SiOx) film or a silicon nitride (SiNx) film, and the multi-layer inorganic film can be formed by alternately laminating one or more layers of silicon oxide (SiOx) film, one or more layers of silicon nitride (SiNx) film, and one or more layers of amorphous silicon (a-Si), but the present disclosure is not limited thereto.

[0072] The interlayer insulating film 32 on the buffer film 20 can include a source contact hole and a drain contact hole that respectively expose the source region 31 and the drain region 33 of the active layer 30, and can be provided to cover the gate insulating film 41 and the gate electrode 43. For example, the interlayer insulating film 32 can be formed of a silicon oxide (SiO x ) film, silicon nitride (SiNx ) A monolayer or multilayer structure formed by a film and / or a silicon oxynitride film (SiO x N y ). For example, the interlayer insulating film 32 can be formed by a monolayer or multilayer inorganic film. For example, the monolayer inorganic film can be a silicon oxide (SiOx) film or a silicon nitride (SiNx) film, and the multilayer inorganic film can be formed by alternately laminating one or more layers of silicon oxide (SiOx) film, one or more layers of silicon nitride (SiNx) film, and one or more layers of amorphous silicon (a-Si), but the present disclosure is not limited thereto.

[0073] The source electrode 51 and the drain electrode 53 can be disposed on the interlayer insulating film 32 in the same layer. The source electrode 51 and the drain electrode 53 are respectively connected to the source region 31 and the drain region 33 of the active layer 30 through a source contact hole and a drain contact hole. For example, the source electrode 51 and the drain electrode 53 can be formed as a single layer of a metal material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or an alloy thereof, or can be formed as a multilayer structure using the same.

[0074] The first insulating layer 40 on the interlayer insulating film 32 can be provided to cover the transistor TFT. Therefore, the transistor TFT can be protected by the first insulating layer 40. For example, the first insulating layer 40 is an inorganic insulating film. For example, x ) film, silicon nitride (SiN x ) film, silicon oxynitride (SiO x N y ) One of the films or a multilayer structure thereof. For example, the first insulating layer 40 can be formed by a monolayer or multilayer inorganic film. For example, the monolayer inorganic film can be a silicon oxide (SiOx) film or a silicon nitride (SiNx) film, and the multilayer inorganic film can be formed by alternately laminating one or more layers of silicon oxide (SiOx) film, one or more layers of silicon nitride (SiNx) film, and one or more layers of amorphous silicon (a-Si), but the present disclosure is not limited thereto.

[0075] The second insulating layer 50 can be disposed on the first insulating layer 40. The second insulating layer 50 can be formed to have a thickness sufficient to flatten the surface steps on the transistor TFT and can be formed as an organic insulating film. In some cases, if the second insulating layer 50 is also used to protect the transistor TFT, the first insulating layer 40 can be omitted. For example, the second insulating layer 50 can be an organic insulating film and can be formed of one of photoacrylic acid, polyamide, benzocyclobutene resin, and acrylate, or in some cases, can be formed as a multilayer structure.

[0076] The light-emitting device 160 having a stacked structure including a first electrode 161, an intermediate layer 163, and a second electrode 165 may be disposed on the second insulating layer 50. When current supplied from the power voltage line flows to the second electrode 165 and high-voltage current supplied from the transistor TFT flows to the first electrode 161, an electric field is formed between the first electrode 161 and the second electrode 165, and the intermediate layer 163 emits light, thereby driving the light-emitting device 160. Here, the light-emitting area EA where the light-emitting device 160 emits light may be an area exposed from the bank 170.

[0077] The first electrode 161 may be disposed in each of the sub-pixels SP1, SP2, and SP3 and may be electrically connected to each transistor TFT. The first electrode 161 may be formed as a multilayer structure including an opaque conductive film and a transparent conductive film having high reflection efficiency. The transparent conductive film of the first electrode 161 may be formed of a material having a relatively high work function value, such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the opaque conductive film may be formed as a single-layer or multi-layer structure including at least one selected from the group consisting of silver (Ag), aluminum (Al), copper (Cu), molybdenum (Mo), titanium (Ti), nickel (Ni), chromium (Cr), tungsten (W), and alloys thereof. For example, the first electrode 161 may be formed as a structure of a transparent conductive film, an opaque conductive film, and a transparent conductive film stacked in sequence, or may be formed as a structure of a transparent conductive film and an opaque conductive film stacked in sequence.

[0078] The bank 170 may be disposed on the entire second insulating layer 50 while exposing the light-emitting area EA. At this time, the bank 170 may be disposed to cover the edge of the first electrode 161. For example, the bank 170 may be formed of an organic material such as polyimide, acrylate, or benzocyclobutene resin. The bank 170 may be disposed at the boundary between the plurality of sub-pixels SP and may suppress color mixing of light beams from the plurality of sub-pixels SP. For example, the bank 170 may be disposed between the first electrodes 161 respectively disposed in the plurality of sub-pixels SP1, SP2, and SP3. For example, the bank 170 may be formed to cover the edge of each first electrode 161 and expose a part of each first electrode 161. Therefore, the bank 170 may prevent a problem of deterioration in light-emitting efficiency due to current concentration at the end of the first electrode 161.

[0079] The intermediate layer 163 may be disposed on the first electrode 161 and the bank portion 170 that are exposed from the bank portion 170. The intermediate layer 163 may refer to an organic layer of a single stack including a plurality of layers, the plurality of layers including a hole injection layer (HIL), a hole transport layer (HTL), a light emitting layer (EML1 or EML2), an electron transport layer (ETL), and an electron injection layer (EIL). In the present disclosure, the intermediate layer 163 may represent a light emitting unit having a stacked structure including a plurality of stacks. For example, a first stack and a second stack each having a first light emitting layer EML1 and a second light emitting layer EML2, and a charge generation layer (CGL) between the stacks. In addition, the stacked structure is not limited to a double-stack structure and may include a plurality of stacks, for example, three or more stacks. In the plurality of stacks, the first light emitting layer EML1 and the second light emitting layer EML2 may be light emitting layers that emit light of the same color (for example, any one of red light, green light, and blue light), and may be partially disposed in each of the plurality of pixels P. Other layers included in the intermediate layer 163 except for the first light emitting layer EML1 and the second light emitting layer EML2 may be disposed above the entire surface of the substrate 10 through a common mask. Alternatively, when white light is emitted by the first light emitting layer EML1 and the second light emitting layer EML2 in the double-stack structure or the light emitting layers in the multi-stack structure including three or more stacks, each light emitting layer may be disposed above the entire surface of the substrate 10 through a common mask in the same manner as the other layers included in the intermediate layer 163. In addition, the charge generation layer CGL may be formed as a double-layer structure including an n-type layer and a p-type layer.

[0080] The second electrode 165 may be disposed on the intermediate layer 163. The second electrode 165 may be disposed adjacent to the first pattern defining layer 191 in the transmission region T. That is, the second electrode 165 may not be disposed in the transmission region T. For example, the second electrode 165 may be formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or may be formed of silver (Ag), aluminum (Al), magnesium (Mg), calcium (Ca), or an alloy thereof having a thickness small enough to transmit light.

[0081] The first pattern defining layer 191 adjacent to the second electrode 165 may be disposed on the intermediate layer 163 in a region corresponding to the transmission region T. The first pattern defining layer 191 may be disposed in the entire transmission region T and may have a first width L1. In addition, the first pattern defining layer 191 may have a lower refractive index than the second electrode 165. Specifically, the first pattern defining layer 191 may have a refractive index of 1.25 to 1.40. For example, the first pattern defining layer 191 may have a refractive index of 1.3 to 1.35, however, the present disclosure is not limited thereto.

[0082] The first pattern defining layer 191 has a low affinity for the conductive material and may have a surface where the deposition of the second electrode 165 formed of the conductive material is inhibited. Due to the low affinity for the material forming the first pattern defining layer 191, the conductive material may not adhere to the surface of the first pattern defining layer 191. In other words, the conductive material forming the second electrode 165 may have a very low surface adhesion probability to the first pattern defining layer 191. Here, the surface adhesion probability can be measured by depositing on the surface of the first pattern defining layer 191 the amount of the conductive material required to form a densely packed layer with an average thickness of 1 nm in the case of depositing the conductive material. Specifically, the surface adhesion probability of the conductive material to the first pattern defining layer 191 can be inferred by simultaneously depositing the conductive material on the surface of the substrate 10 and the first pattern defining layer 191 and comparing the average thickness of the conductive material layer on the surface of the first pattern defining layer 191 with the average thickness of the conductive material layer deposited on the substrate 10 when the average thickness of the dense layer of the conductive material on the surface of the first pattern defining layer 191 reaches 1 nm. The surface adhesion probability of the conductive material to the first pattern defining layer 191 can be at most 0.3 (or 30%) and at least 0.0008 (0.08%). For example, the surface adhesion probability of the conductive material to the first pattern defining layer 191 can be 5% to 20%, however, the present disclosure is not limited thereto. Therefore, during the nucleation and growth process, due to the low affinity for the first pattern defining layer 191, the conductive material can be desorbed or evaporated or flow to another surface to be fixed to another surface.

[0083] For example, the first pattern defining layer 191 may include a polycyclic aromatic hydrocarbon compound as an organic material including an organic substance and an organic polymer, the polycyclic aromatic hydrocarbon compound including an organic molecule including at least one of heteroatoms such as nitrogen (N), sulfur (S), oxygen (O), phosphorus (P), and aluminum (Al). The polycyclic aromatic hydrocarbon compound may include an organic molecule including a core portion and at least one terminal portion bonded to the core portion. For example, the first pattern defining layer 191 may include 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), bis(2-methyl-8-quinolinolato)-4-phenylphenolatoaluminum(III) (BAlq), 2-(4-(9,10-di(naphthalen-2-yl)anthracen-2-yl)phenyl)-1-phenyl-1H-benzo[d]imidazole, lithium 8-hydroxyquinoline (Liq), N(diphenyl-4-yl)9,9-dimethyl-N-(4(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluorene-2-amine, etc.

[0084] Therefore, the light-emitting display device of the present disclosure has a first pattern defining layer 191 formed of an organic material in the transmissive region T, so that the transmittance of the transmissive region T can be improved compared with the case where the second electrode 165 is provided in the transmissive region T. In addition, the light-emitting display device of the present disclosure does not use a simple organic material in the transmissive region T, but has a first pattern defining layer 191 with a low affinity for the conductive material forming the second electrode 165, so that a separate mask for forming the second electrode 165 after forming the first pattern defining layer 191 can be unnecessary.

[0085] A cover layer structure 180 may be provided on the second electrode 165 and the first pattern defining layer 191. The cover layer structure 180 may include at least two layers, for example, a first cover layer 181 and a second cover layer 183. The first cover layer 181 and the second cover layer 183 may include different materials. In addition, the first cover layer 181 and the second cover layer 183 may be formed to have different thicknesses. In particular, the first cover layer 181 and the second cover layer 183 may have different refractive indexes. The cover layer structure 180 can prevent the light-emitting device 160 from deteriorating due to external moisture or oxygen, and can improve the light-emitting efficiency of the light-emitting device 160. The cover layer structure 180 of the present disclosure is not limited thereto, and may further include one or more cover layers on the second cover layer 183.

[0086] The first cover layer 181 may be provided on the second electrode 165 and the first pattern defining layer 191 through the entire surface of the substrate 10. The first cover layer 181 may be an organic cover layer including an organic substance, or a composite cover layer including an organic substance and an inorganic substance. For example, the first cover layer 181 may include a carbocyclic compound, a heterocyclic compound, an amino group-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amino group-containing compound may be selectively substituted with substituents including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof.

[0087] The second cover layer 183 may be disposed on the first cover layer 181. The second cover layer 183 may be formed to have a smaller thickness than the first cover layer 181. However, the present disclosure is not limited thereto, and the second cover layer 183 may not be formed to have a smaller thickness than the first cover layer 181. In addition, the refractive index of the second cover layer 183 may be higher than the refractive index of the first cover layer 181. Therefore, the light emitting display device of the present disclosure reflects and transmits the light from the light emitting device 160 at the interface between the first cover layer 181 and the second cover layer 183, thereby improving the efficiency of emitting light from the light emitting device 160 to the outside. Such a second cover layer 183 may include an inorganic material having a low reflectivity, and may include a metal, a metal oxide, or a metal fluoride, but is not limited thereto. For example, if the second cover layer 183 includes a metal, the second cover layer 183 may include any one of ytterbium (Yb), bismuth (Bi), cobalt (Co), molybdenum (Mo), titanium (Ti), zirconium (Zr), aluminum (Al), chromium (Cr), niobium (Nb), platinum (Pt), tungsten (W), indium (In), tin (Sn), iron (Fe), nickel (Ni), tantalum (Ta), manganese (Mn), zinc (Zn), germanium (Ge), silver (Ag), magnesium (Mg), gold (Au), copper (Cu), calcium (Ca), or a combination thereof. If the second cover layer 183 includes a metal oxide or a metal fluoride, the second cover layer 183 may include any one of SiO2, TiO2, ZrO2, Ta2O5, HfO2, Al2O3, ZnO, Y2O3, BeO, MgO, PbO2, WO3, SiNx, LiF, CaF2, MgF2, CdS, or a combination thereof.

[0088] The second pattern defining layer 193 adjacent to the second cover layer 183 may be disposed on the first cover layer 181 in a region corresponding to the transmission region T. That is, the second cover layer 183 may not be disposed in the transmission region T. The second pattern defining layer 193 may be disposed in the entire transmission region T, and may have a second width L2 that is the same as the first width L1. Therefore, the second pattern defining layer 193 may be formed to have the same area as the first pattern defining layer 191, and may overlap with the first pattern defining layer 191. In addition, the second pattern defining layer 193 may have a lower refractive index than the second cover layer 183, and may have a refractive index equal to or higher than that of the first pattern defining layer 191. Specifically, the second pattern defining layer 193 may have a refractive index of 1.25 to 1.45. For example, the second pattern defining layer 193 may have a refractive index of 1.3 to 1.4, but is not limited thereto.

[0089] The second pattern defining layer 193 may be formed of a material selected from the same group of materials as the first pattern defining layer 191. Alternatively, the second pattern defining layer 193 may include the same material as the first pattern defining layer 191. However, the present disclosure is not limited thereto, and the first pattern defining layer 191 and the second pattern defining layer 193 may include different materials. In addition, since the first pattern defining layer 191 and the second pattern defining layer 193 have different affinities for different components or the first pattern defining layer 191 and the second pattern defining layer 193 have different affinities for the same component, the first pattern defining layer 191 and the second pattern defining layer 193 may have different adhesion probabilities for the conductive material.

[0090] The second pattern defining layer 193 may include a polycyclic aromatic hydrocarbon compound as an organic material including an organic substance and an organic polymer, and the polycyclic aromatic hydrocarbon compound includes an organic molecule including at least one of heteroatoms such as nitrogen (N), sulfur (S), oxygen (O), phosphorus (P), and aluminum (Al). The polycyclic aromatic hydrocarbon compound may include an organic molecule including a core portion and at least one terminal portion bonded to the core portion. For example, the second pattern defining layer 193 may include 3-(4-biphenylyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), bis(2-methyl-8-quinolinolato)-4-phenylphenol aluminum(III) (BAlq), 2-(4-(9,10-di(naphthalen-2-yl)anthracen-2-yl)phenyl)-1-phenyl-1H-benzo[d]imidazole, lithium 8-hydroxyquinoline (Liq), N(diphenyl-4-yl)9,9-dimethyl-N-(4(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluorene-2-amine, and the like.

[0091] Therefore, the light-emitting display device of the present disclosure has the second pattern defining layer 193 formed of an organic material in the transmissive region T, so that the transmittance of the transmissive region T can be improved as compared with the case where the second cover layer 183 is provided in the transmissive region T. In addition, the light-emitting display device of the present disclosure does not use a simple organic material in the transmissive region T, but has the second pattern defining layer 193 having a low affinity for the conductive inorganic material forming the second cover layer 183, so that a separate mask for forming the second cover layer 183 after forming the second pattern defining layer 193 may not be required.

[0092] That is to say, in the light-emitting display device of the present disclosure, a first pattern defining layer 191 on the same line as the second electrode 165 instead of the second electrode 165 and a second pattern defining layer 193 on the same line as the second cover layer 183 instead of the second cover layer 183 are provided in the entire transmission region T (for example, the first pattern defining layer 191 is provided in the entire transmission region T on the same line and the second electrode 165 is provided in other regions except the transmission region T, and the second pattern defining layer 193 is provided in the entire transmission region T on the same line and the second cover layer 183 is provided in other regions except the transmission region T. For example, the first pattern defining layer 191 and the second pattern defining layer 193 are provided to overlap each other in the entire transmission region T, and in other regions except the transmission region T, the second electrode 165 and the second cover layer 183 are provided to overlap each other). Thus, compared with the conventional case where the second electrode and the second cover layer are provided in the transmission region T, the transmittance of the transmission region T can be increased.

[0093] Figure 13 It is a graph comparing the transmittance of the transmission region T where the second pattern defining layer 193 is provided and the transmittance of the transmission region T when the second cover layer 183 is provided. In this graph, the horizontal axis represents the wavelength (nm), the vertical axis represents the transmittance (%), A indicates the case where both the first pattern defining layer 191 and the second pattern defining layer 193 are provided in the transmission region T, and B indicates the case where only the first pattern defining layer 191 is provided in the transmission region T and the first cover layer 181 and the second cover layer 183 are provided on the first pattern defining layer 191. Referring to Figure 13 , it can be seen that in the visible range of 380 nm to 780 nm, A has a higher transmittance than B. Thus, the light-emitting display device of the present disclosure has the first pattern defining layer 191 and the second pattern defining layer 193 overlapping in the transmission region T, so the transmittance can be improved. Therefore, the light-emitting display device of the present disclosure increases the transmittance of the transmission region T, thereby improving the overall transmittance of the sensor and thus improving the perceived image quality.

[0094] Figure 5 is a schematic plan view of the light-emitting display device of the present disclosure according to the second exemplary embodiment, and Figure 6 is a cross-sectional view of the light-emitting display device of the present disclosure according to the second exemplary embodiment. Hereinafter, descriptions of components the same as those in the previous exemplary embodiment will be omitted.

[0095] Referring to Figure 5, in the light-emitting display device of the present disclosure according to the second exemplary embodiment, the first pattern defining layer 291 and the second pattern defining layer 293 may be formed to have different areas in the transmissive region T. Specifically, the first pattern defining layer 291 may be disposed in a part of the transmissive region T to have an area with a first width of L1, and the second pattern defining layer 293 may be disposed in a part of the transmissive region T to have an area with a second width of L2 that is greater than the first width L1.

[0096] Reference Figure 6 , the light-emitting display device of the present disclosure may include a light-emitting device 260. The light-emitting device 260 includes a first electrode 261, an intermediate layer 263, and a second electrode 265 disposed in each of a plurality of light-emitting regions EA provided on a substrate 10, a first cover layer 281 and a second cover layer 283 that are sequentially disposed on the light-emitting device 260 and have different refractive indexes, a first pattern defining layer 291 adjacent to a side surface of the second electrode 265 and disposed in each of a plurality of transmissive regions T, and a second pattern defining layer 293 adjacent to a side surface of the second cover layer 283 and configured to overlap the first pattern defining layer 291. In addition, the second pattern defining layer 293 according to the second exemplary embodiment has a greater width than the first pattern defining layer 291, and the first pattern defining layer 291 may overlap an inner portion of the second pattern defining layer 293. Therefore, in the present disclosure according to the second exemplary embodiment, the first pattern defining layer 291 having a smaller area overlaps an inner portion of the second pattern defining layer 293 having a larger area (for example, the area of the second pattern defining layer 293 is larger than the area of the first pattern defining layer 291, and the first pattern defining layer 291 overlaps a central portion of the second pattern defining layer 293). Thus, in the transmissive region T, the transmittance of the region where the first pattern defining layer 291 and the second pattern defining layer 293 overlap each other and the transmittance of the region where the first pattern defining layer 291 and the second pattern defining layer 293 do not overlap each other may be different. For example, in the transmissive region T, the transmittance of the region where the first pattern defining layer 291 and the second pattern defining layer 293 overlap each other is greater than the transmittance of the region where the first pattern defining layer 291 and the second pattern defining layer 293 do not overlap each other.

[0097] In the light-emitting display device of the present disclosure according to the second exemplary embodiment, the first pattern defining layer 291 and the second pattern defining layer 293 may not be provided in the entire transmissive region T. Further, since the first pattern defining layer 291 and the second pattern defining layer 293 are away from the substrate 10 in the transmissive region T, the first pattern defining layer 291 and the second pattern defining layer 293 may have an increasingly larger area. Thus, the exemplary embodiment in which the first pattern defining layer 291 and the second pattern defining layer 293 have different areas can be applied to the exemplary embodiments of selectively removing the first insulating layer IL1 and the second insulating layer IL2 and the bank (such as Figure 7 shown as BK and Figure 6 shown as 270).

[0098] Figure 7 FIG. is a schematic cross-sectional view of a light-emitting display device of the present disclosure according to the third exemplary embodiment, and Figure 8 is a cross-sectional view of a light-emitting display device of the present disclosure according to the third exemplary embodiment.

[0099] Referring to Figure 7 , the light-emitting display device of the present disclosure may sequentially include a first insulating layer IL1, a second insulating layer IL2, a first electrode E1, an intermediate layer HIL, HTL, EML, ETL, and EIL, a second electrode E2, a first cover layer CL1, and a second cover layer CL2 in a region corresponding to the pixel P on the substrate 10, and may sequentially include a first insulating layer IL1, a second insulating layer IL2, a bank BK, an intermediate layer EL, a first pattern defining layer PL1, a first cover layer CL1, and a second pattern defining layer PL2 in a region corresponding to the transmissive region T on the substrate 10. Here, the intermediate layer HIL, HTL, EML, ETL, and EIL may include a hole injection layer HIL, a hole transport layer HTL, a light-emitting layer EML, an electron transport layer ETL, and an electron injection layer EIL. However, although the intermediate layer HIL, HTL, EML, ETL, and EIL are shown as a single stack, the present disclosure is not limited thereto, and the intermediate layer HIL, HTL, EML, ETL, and EIL may be formed into a multi-stack structure having a charge generation layer between the stacks.

[0100] The light-emitting display device of the present disclosure according to the third exemplary embodiment may be provided with a first pattern defining layer PL1 adjacent to the second electrode E2 in the transmissive region T and a second pattern defining layer PL2 adjacent to the second cover layer CL2 in the transmissive region T. Further, a first thickness t31 of the first pattern defining layer PL1 according to the third exemplary embodiment may be less than a second thickness t32 that is the total thickness of the electron injection layer EIL and the second electrode E2, and a first thickness t41 of the second pattern defining layer PL2 may be less than a second thickness t42 of the second cover layer CL2.

[0101] Referring to Figure 8 Figure 8 , the light-emitting display device of the present disclosure may include: a light-emitting device 360 including a first electrode 361, an intermediate layer 363, and a second electrode 365 in each of a plurality of light-emitting regions EA provided on a substrate 10; a first cover layer 381 and a second cover layer 382 sequentially provided on the light-emitting device 360 and having different refractive indexes; a first pattern defining layer 391 adjacent to a side surface of the second electrode 365 and provided in each of a plurality of transmissive regions T on the substrate 10; and a second pattern defining layer 393 adjacent to a side surface of the second cover layer 382 and configured to overlap with the first pattern defining layer 391. In addition, the first pattern defining layer 391 and the second pattern defining layer 393 according to the third exemplary embodiment may be formed to have the same first width L1 and second width L2, respectively, and may be provided in the entire transmissive region T. However, the present disclosure is not limited thereto, and at least one of the first pattern defining layer 391 and the second pattern defining layer 393 may be formed to be partially provided in the transmissive region T.

[0102] The intermediate layer 363 provided between the first electrode 361 and the second electrode 365 may include a plurality of common layers. The intermediate layer 363 may include an electron injection layer 363b (or EIL) in contact with the second electrode 365. In addition, the intermediate layer 363 may include a hole injection layer HIL, a hole transport layer HTL, a light-emitting layer EML, and an electron transport layer ETL as a plurality of common layers 363a not in contact with the second electrode 365. Here, the light-emitting layer EML may not be provided as a common layer penetrating the entire substrate 10 and may be provided for each pixel P.

[0103] The first pattern defining layer 391 according to the third exemplary embodiment may be provided adjacent to side surfaces of the electron injection layer 363b and the second electrode 365. The first pattern defining layer 391 may have a low affinity for the electron injection layer 363b. Here, the electron injection layer 363b may include an alkali metal having a low work function such as Li, Ca, or Mg, a metal ion form such as LiF or CsF, or a compound such as Cs2Co3 or RbCO3, but is not limited thereto. Therefore, the first pattern defining layer 391 formed of a polycyclic aromatic hydrocarbon compound may have a low affinity for the electron injection layer 363b. Accordingly, the electron injection layer 363b may be formed in a region excluding the transmissive region T through the first pattern defining layer 391. Thereby, the light-emitting display device of the present disclosure can further improve the transmittance of the transmissive region T.

[0104] In addition, the first pattern defining layer 391 may be formed to have a first thickness t31 that is less than a second thickness t32, which is the total thickness of the electron injection layer 363b and the second electrode 365. That is, the first thickness t31 of the first pattern defining layer PL1 may be less than the total thickness of the components patterned from the first pattern defining layer 391. Accordingly, the light-emitting display device of the present disclosure can further increase the transmittance of the transmissive region T.

[0105] Figure 9A FIG. B is a schematic plan view showing various shapes of the light-emitting display device of the present disclosure.

[0106] Referring to Figure 9A , the first pattern defining layer PL1 and the second pattern defining layer PL2 may be formed to have the same first width L1 and second width L2 and the same area, respectively, so as to overlap each other on the substrate 10. In addition, the first pattern defining layer PL1 and the second pattern defining layer PL2 may be disposed in a part of the transmissive region T.

[0107] Referring to Figure 9B , the first pattern defining layer PL1 and the second pattern defining layer PL2 may be formed to have different first widths L1 and second widths L2 and different areas, respectively, so as to overlap each other on the substrate 10. In addition, the second pattern defining layer PL2 may be disposed in the entire transmissive region T, and the first pattern defining layer PL1 may be disposed in a part of the transmissive region T.

[0108] Figure 10A and Figure 10B are schematic cross-sectional views showing various shapes of the light-emitting display device of the present disclosure.

[0109] Referring to Figure 10A , the light-emitting display device may include a first insulating layer IL1, a second insulating layer IL2, a first electrode E1, an intermediate layer EL, a second electrode E2, a first cover layer CL1, and a second cover layer CL2 in a region corresponding to the pixel P on the substrate 10, and may include a first insulating layer IL1, a second insulating layer IL2, an intermediate layer EL, a first pattern defining layer PL1, a first cover layer CL1, and a second pattern defining layer PL2 in a region corresponding to the transmissive region T on the substrate 10. That is, in order to maximize the transmittance of the light-emitting display device of the present disclosure, the bank may be removed from the region corresponding to the transmissive region T.

[0110] Referring to Figure 10B, the light-emitting display device may include a first insulating layer IL1, a second insulating layer IL2, a first electrode E1, an intermediate layer EL, a second electrode E2, a first cover layer CL1, and a second cover layer CL2 in a region corresponding to the pixel P on the substrate 10, and may include the intermediate layer EL, a first pattern defining layer PL1, a first cover layer CL1, and a second pattern defining layer PL2 in a region corresponding to the transmissive region T on the substrate 10. That is, in order to maximize the transmittance of the light-emitting display device of the present disclosure, the first insulating layer, the second insulating layer, and the bank may be removed from the region corresponding to the transmissive region T.

[0111] As described above, by removing the first insulating layer, the second insulating layer, and / or the bank from the region corresponding to the transmissive region T, the transmittance of the light-emitting display device of the present disclosure can be maximized.

[0112] Figure 11A , Figure 11B , Figure 11C and Figure 11D are schematic plan views showing various shapes of the light-emitting display device of the present disclosure. Figure 11A , Figure 11B , Figure 11C and Figure 11D show a bank opening region BKO provided in the transmissive region T. The bank opening region BKO may be a region where no bank is formed.

[0113] Refer to Figure 11A , the bank opening region BKO may be provided as a region corresponding to the transmissive region T on the substrate 10 in a part of the transmissive region T. In addition, the first pattern defining layer PL1 and the second pattern defining layer PL2 on the substrate 10 may have the same width L1 and L2 to have the same area, and may be provided within the bank opening region BKO. However, the present disclosure is not limited thereto, and the first pattern defining layer PL1 and the second pattern defining layer PL2 on the substrate 10 may have different widths L1 and L2.

[0114] Refer to Figure 11B , the bank opening region BKO may be provided as a region corresponding to the transmissive region T on the substrate 10 in a part of the transmissive region T. In addition, the first pattern defining layer PL1 on the substrate 10 may have a first width L1 and be provided within the bank opening region BKO, and the second pattern defining layer PL2 may have a second width L2 and be provided to be larger than the bank opening region BKO and smaller than the transmissive region T.

[0115] Refer to Figure 11C, a bank opening region BKO may be provided in a part of the transmissive region T as a region corresponding to the transmissive region T on the substrate 10. In addition, the first pattern defining layer PL1 on the substrate 10 may have a first width L1 and be provided within the bank opening region BKO, and the second pattern defining layer PL2 may have a second width L2 and be provided throughout the transmissive region T.

[0116] Reference Figure 11D , a bank opening region BKO may be provided throughout the transmissive region T as a region corresponding to the transmissive region T on the substrate 10. Accordingly, the first pattern defining layer PL1 and the second pattern defining layer PL2 may be provided throughout the transmissive region T.

[0117] As Figures 9A to 11D shown, the light-emitting display device of the present disclosure may form the first pattern defining layer PL1 and the second pattern defining layer PL2 having various structures in the transmissive region T. In addition, the first insulating layer IL1, the second insulating layer IL2, and the bank corresponding to the transmissive region T may be selectively removed. In addition, the areas of the bank opening region BKO, the first pattern defining layer PL1, and the second pattern defining layer PL2 corresponding to the transmissive region T may vary. Therefore, the light-emitting display device of the present disclosure may increase the transmittance of the transmissive region T by the first pattern defining layer PL1 and the second pattern defining layer PL2 provided in the transmissive region T, and may maximize the transmittance of the transmissive region T by selectively removing the insulating layers IL1, IL2, and the bank.

[0118] Figure 12 is a cross-sectional view of the light-emitting display device of the present disclosure according to the fourth exemplary embodiment. For example, Figure 12 may be Figure 10B or Figure 11D a cross-sectional view of.

[0119] Referring to Figure 12 , the light-emitting display device of the present disclosure according to the fourth exemplary embodiment may include: a light-emitting device 460 including a first electrode 461, an intermediate layer 463, and a second electrode 465 provided in each of a plurality of light-emitting regions EA provided on the substrate 10; a first cover layer 491 and a second cover layer 492 sequentially provided on the light-emitting device 460 and having different refractive indices; a first pattern defining layer 481 adjacent to a side surface of the second electrode 465 and provided in each of a plurality of transmissive regions T on the substrate 10; and a second pattern defining layer 483 adjacent to a side surface of the second cover layer 492 and configured to overlap the first pattern defining layer 481.

[0120] In the light-emitting display device of the present disclosure according to the fourth exemplary embodiment, the first insulating layer 440, the second insulating layer 450, and the bank 470 may be removed from the transmissive region T. That is, in the light-emitting display device of the present disclosure according to the fourth exemplary embodiment, the first insulating layer 440, the second insulating layer 450, and the bank 470 may expose the transmissive region T. In addition, in the light-emitting display device of the present disclosure according to the fourth exemplary embodiment, the first pattern defining layer 481 and the second pattern defining layer 483 may be disposed in the entire transmissive region T. Therefore, a first vertical distance V1 from the upper surface of the substrate 10 to the lower surface of the first pattern defining layer 481 may be shorter than a second vertical distance V2 from the upper surface of the substrate 10 to the lower surface of the second electrode 465. The light-emitting display device of the present disclosure according to the fourth exemplary embodiment may maximize the transmittance of the transmissive region T. Therefore, as the transmittance of the transmissive region T increases, the light-emitting display device of the present disclosure may increase the overall light transmittance of the sensor, thereby improving the perceived image quality.

[0121] A light-emitting display device according to an exemplary embodiment of the present disclosure will be described below.

[0122] A light-emitting display device according to an exemplary embodiment of the present disclosure may include: a light-emitting device including a first electrode, an intermediate layer, and a second electrode at each of a plurality of light-emitting regions on a substrate; a first cover layer and a second cover layer sequentially disposed on the light-emitting device and configured to have different refractive indices; a first pattern defining layer adjacent to a side surface of the second electrode and disposed at each of a plurality of transmissive regions on the substrate; and a second pattern defining layer adjacent to a side surface of the second cover layer and configured to at least partially overlap with the first pattern defining layer.

[0123] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the second pattern defining layer may have a lower refractive index than the second cover layer.

[0124] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the refractive index of the second pattern defining layer may be equal to or higher than the refractive index of the first pattern defining layer.

[0125] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the first cover layer may have a lower refractive index than the second cover layer.

[0126] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the first pattern defining layer may have a lower refractive index than the second electrode.

[0127] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the area of the second pattern defining layer may be the same as the area of the first pattern defining layer, and the entire portion of the first pattern defining layer overlaps with the second pattern defining layer.

[0128] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the second pattern defining layer may have an area larger than that of the first pattern defining layer, and the entire portion of the first pattern defining layer overlaps with the second pattern defining layer.

[0129] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the first pattern defining layer and the second pattern defining layer may include a polycyclic aromatic hydrocarbon compound.

[0130] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the polycyclic aromatic hydrocarbon compound includes an organic molecule, and the organic molecule includes a core portion and at least one end portion bonded to the core portion.

[0131] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the first covering layer includes an organic material, and the second covering layer may include an inorganic material.

[0132] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the intermediate layer may include a plurality of common layers and an electron injection layer in contact with the second electrode. The electron injection layer and the second electrode may be adjacent to a side surface of the first pattern defining layer.

[0133] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the thickness of the first pattern defining layer may be less than the total thickness of the electron injection layer and the second electrode.

[0134] In a light-emitting display device according to an exemplary embodiment of the present disclosure, the thickness of the second pattern defining layer may be less than the thickness of the second covering layer.

[0135] A light-emitting display device according to an exemplary embodiment of the present disclosure may further include a bank on a substrate to expose each of a plurality of transmissive regions and a plurality of light-emitting regions.

[0136] In a light-emitting display device according to an exemplary embodiment of the present disclosure, a first vertical distance from an upper surface of the substrate to a lower surface of the first pattern defining layer may be shorter than a second vertical distance from the upper surface of the substrate to a lower surface of the second electrode.

[0137] The light-emitting display device according to an exemplary embodiment of the present disclosure may further include at least one transistor between a substrate and a light-emitting device, and a first insulating layer and a second insulating layer covering the at least one transistor. At least one of the first insulating layer and the second insulating layer may expose each of the plurality of transmissive regions. Alternatively, at least one of the first insulating layer and the second insulating layer may not be present at each of the plurality of transmissive regions.

[0138] The light-emitting display device according to an exemplary embodiment of the present disclosure may further include: at least one transistor between a substrate and a light-emitting device; a first insulating layer and a second insulating layer to cover the at least one transistor; and a bank on the second insulating layer, wherein at least one of the first insulating layer, the third insulating layer, and the bank is not present at each of the plurality of transmissive regions.

[0139] In the light-emitting display device according to an exemplary embodiment of the present disclosure, at least a part of each of the plurality of transmissive regions is provided with a bank opening region.

[0140] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the width of the second pattern defining layer is greater than or equal to the width of the bank opening region and less than or equal to the width of the transmissive region.

[0141] In the light-emitting display device according to an exemplary embodiment of the present disclosure, each of the width of the first pattern defining layer and the width of the second pattern defining layer is less than or equal to the width of the bank opening region.

[0142] In the light-emitting display device according to an exemplary embodiment of the present disclosure, the width of the first pattern defining layer is less than the width of the bank opening region, and the width of the bank opening region is less than the width of the second pattern defining layer.

[0143] A method of manufacturing a light-emitting display device according to an exemplary embodiment of the present disclosure may include: forming a light-emitting device at each of a plurality of light-emitting regions on a substrate, the light-emitting device including a first electrode, an intermediate layer, and a second electrode; sequentially forming a first covering layer and a second covering layer provided on the light-emitting device, the first covering layer and the second covering layer being configured to have different refractive indexes; forming a first pattern defining layer adjacent to a side surface of the second electrode at each of a plurality of transmissive regions on the substrate; and forming a second pattern defining layer adjacent to a side surface of the second covering layer, the second pattern defining layer being configured to at least partially overlap with the first pattern defining layer.

[0144] As can be seen from the above description, the light-emitting display device of the present disclosure has the following effects:

[0145] First, the light-emitting display device of the present disclosure has a first pattern defining layer adjacent to the second electrode and having a higher transmittance than the second electrode, and a second pattern defining layer adjacent to the second cover layer and having a higher transmittance than the second cover layer, in regions corresponding to each of the transmission regions of the sensor, thereby enabling an increase in the transmittance of the transmission regions. Accordingly, the light-emitting display device of the present disclosure increases the overall transmittance of the sensor, thereby having an effect of improving the perceived image quality.

[0146] Second, in the light-emitting display device of the present disclosure, the first pattern defining layer and the second pattern defining layer have low affinity for the second electrode and the second cover layer, respectively, such that the second electrode and the second cover layer can be formed only through the first pattern defining layer and the second pattern defining layer, and thus a separate mask may not be required. Accordingly, the light-emitting display device of the present disclosure has environmental, social, and governance (ESG) effects in terms of environmental friendliness and process optimization.

[0147] The present disclosure described above is not limited to the exemplary embodiments described herein and in the drawings, and it should be apparent to those skilled in the art that various substitutions, changes, and modifications that are not illustrated herein but are still within the spirit and scope of the present disclosure can be made. Accordingly, the scope of the present disclosure is not defined by the specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be construed as being included within the scope of the present disclosure.

[0148] Cross-reference to related applications

[0149] This application claims the benefit of priority of Korean Patent Application No. 10-2023-0197123, filed on Dec. 29, 2023, the entire contents of which are hereby expressly incorporated herein for all purposes.

Claims

1. A light-emitting display device, comprising: A light emitting device comprising a first electrode, an intermediate layer, and a second electrode at each of a plurality of light emitting regions on a substrate; a first covering layer and a second covering layer, the first covering layer and the second covering layer being sequentially disposed on the light emitting device and configured to have different refractive indices; a first pattern defining layer adjacent to a side surface of the second electrode and disposed at each of a plurality of transmission regions on the substrate; as well as A second pattern defining layer is adjacent to a side surface of the second cover layer and is configured to at least partially overlap the first pattern defining layer.

2. The light-emitting display device according to claim 1, wherein: The second pattern defining layer has a refractive index lower than that of the second covering layer.

3. The light-emitting display device according to claim 1, wherein: The refractive index of the second pattern defining layer is equal to or higher than the refractive index of the first pattern defining layer.

4. The light-emitting display device according to claim 1, wherein: The first cover layer has a refractive index lower than a refractive index of the second cover layer.

5. The light-emitting display device according to claim 1, wherein: The first pattern defining layer has a refractive index lower than that of the second electrode.

6. The light-emitting display device according to claim 1, wherein: An area of ​​the second pattern defining layer is the same as an area of ​​the first pattern defining layer, and an entire portion of the first pattern defining layer overlaps with the second pattern defining layer.

7. The light-emitting display device according to claim 1, wherein: The second pattern defining layer has an area greater than that of the first pattern defining layer, and an entire portion of the first pattern defining layer overlaps the second pattern defining layer.

8. The light-emitting display device according to claim 1, wherein: Each of the first pattern defining layer and the second pattern defining layer includes a polycyclic aromatic hydrocarbon compound.

9. The light-emitting display device according to claim 1, wherein: The first cover layer includes an organic material, and the second cover layer includes an inorganic material.

10. The light emitting display device according to claim 1, in, The intermediate layer includes a plurality of common layers and an electron injection layer in contact with the second electrode, and The electron injection layer and the second electrode are adjacent to a side surface of the first pattern defining layer.

11. The light emitting display device according to claim 10, wherein: The thickness of the first pattern defining layer is smaller than the total thickness of the electron injection layer and the second electrode.

12. The light-emitting display device according to claim 1, wherein: The thickness of the second pattern defining layer is smaller than the thickness of the second covering layer. 13 . The light emitting display device according to claim 1 , further comprising a bank on the substrate to expose each of the plurality of transmission regions and the plurality of light emitting regions.

14. The light-emitting display device according to claim 1, wherein: A first vertical distance from an upper surface of the substrate to a lower surface of the first pattern defining layer is shorter than a second vertical distance from the upper surface of the substrate to a lower surface of the second electrode.

15. The light-emitting display device according to claim 1, further comprising: at least one transistor, the at least one transistor being between the substrate and the light emitting device; as well as a first insulating layer and a second insulating layer, wherein the first insulating layer and the second insulating layer are used to cover the at least one transistor; Wherein, at least one of the first insulating layer and the second insulating layer does not exist in each of the plurality of transmissive regions.

16. The light-emitting display device according to claim 1, further comprising: at least one transistor, the at least one transistor being between the substrate and the light emitting device; a first insulating layer and a second insulating layer, wherein the first insulating layer and the second insulating layer are used to cover the at least one transistor; as well as a bank, the bank being on the second insulating layer, Wherein, at least one of the first insulating layer, the second insulating layer, and the bank does not exist in each of the plurality of transmissive regions.

17. The light-emitting display device according to claim 1, wherein: At least a portion of each of the plurality of transmission areas is provided with a bank opening area, and a width of the second pattern defining layer is greater than or equal to a width of the bank opening area, and a width of the second pattern defining layer is less than or equal to a width of the transmission area.

18. The light emitting display device according to claim 1, wherein: At least a portion of each of the plurality of transmission regions is provided with a bank opening region, and each of a width of the first pattern defining layer and a width of the second pattern defining layer is less than or equal to a width of the bank opening region.

19. The light-emitting display device according to claim 1, wherein: At least a portion of each of the plurality of transmission regions is provided with a bank opening region, and a width of the first pattern defining layer is smaller than a width of the bank opening region, and a width of the bank opening region is smaller than a width of the second pattern defining layer.

20. A light-emitting display device, comprising: a plurality of first electrodes, the plurality of first electrodes being located at each of a plurality of light emitting regions on the substrate; an intermediate layer, the intermediate layer being above the plurality of first electrodes; a first pattern defining layer at each of a plurality of transmission regions on the substrate; a cathode, the cathode being adjacent to a side surface of the first pattern defining layer, the cathode not overlapping the first pattern defining layer; a first covering layer, the first covering layer being over the cathode; a second pattern defining layer, the second pattern defining layer overlapping the first pattern defining layer; as well as A second covering layer is adjacent to a side surface of the first pattern defining layer, and the second covering layer does not overlap with the second pattern defining layer.

21. The light-emitting display device according to claim 20, wherein: The first cover layer and the second cover layer have different refractive indexes.

22. The light-emitting display device according to claim 20, wherein: The refractive index of the second pattern defining layer is equal to or higher than the refractive index of the first pattern defining layer.

23. The light-emitting display device according to claim 20, in, The first cover layer has a refractive index lower than that of the second cover layer, and Wherein, the first pattern defining layer has a refractive index lower than that of the cathode.

24. The light-emitting display device according to claim 20, wherein: The second pattern defining layer has an area greater than that of the first pattern defining layer, and an entire portion of the first pattern defining layer overlaps the second pattern defining layer.

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