Indication device

Abstract

To provide a display device that prevents leaking light.SOLUTION: A display device according to one embodiment includes: a substrate that includes a plurality of light emitting elements; a first insulation layer that is provided on the plurality of light emitting elements; a lens that corresponds to each of the plurality of light emitting elements, and is provided on the first insulation layer; a first light shielding pattern that is provided between the substrate and the first insulation layer, corresponding to each of the plurality of light emitting elements; and a second light shielding pattern that is provided on the first insulation layer, overlapping on the first light shielding pattern. The second light shielding pattern includes a center part, and an edge around the center part, and the edge part tilts with the center part as a reference.SELECTED DRAWING: Figure 4a

Description

Technical Field

[0001] The present invention relates to a display device, and more particularly to a display device capable of preventing light leakage.

Background Art

[0002] In the full-fledged information age, the field of display devices that visually display electrical information signals has been rapidly developing. Therefore, various display devices such as liquid crystal display devices (LCDs) and organic light emitting display devices (OLEDs) have been developed and applied in various fields.

[0003] Among these, a light emitting display device includes a light emitting element which is a self-luminous element, and does not require a separate light source used for a non-light emitting element, so it can be made lighter and thinner. Further, since the light emitting display device is self-luminous, there is no limitation on the viewing angle.

[0004] Thus, the light emitting display device can be provided with lenses corresponding to each of a plurality of light emitting elements for controlling the viewing angle for reasons such as privacy protection, information protection, and application as a vehicle display device.

[0005] Here, the light emitted from the light emitting element can travel in all directions, not just through the lens. Here, the light emitted from the light emitting element and traveling between the lenses is reflected by a light-shielding configuration such as a blocking pattern provided between the lenses, and is re-reflected by a reflective component on the light emitting element side, so that it reaches other lenses that are not the lens in question, causing a problem of light leakage. This may also cause a problem of reducing the cut-off effect in a display device for viewing angle control.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention can solve the above-mentioned problems and aims to provide a display device that prevents the light from being reflected back to the light-emitting element when it is reflected by a light-shielding configuration provided in a non-aperture, or adjusts the angle at which it is reflected back to the light-emitting element, so that even if it is re-reflected, it is not emitted to any other lens. [Means for solving the problem]

[0007] The display device of the present invention prevents light leakage by configuring the edge of either the first light-shielding pattern or the second light-shielding pattern, which can block light from entering the non-opening, to be angled, thereby preventing the light from the light-emitting element that is traveling to the non-opening from being reflected back to the light-emitting element, or preventing the light from being emitted to another lens even if it is re-reflected by the angled edge.

[0008] A display device according to one embodiment of the present invention includes a plurality of light-emitting elements located on a substrate, a first insulating layer provided on the plurality of light-emitting elements, a lens provided on the first insulating layer corresponding to each of the plurality of light-emitting elements, a first light-shielding pattern provided between the substrate and the first insulating layer corresponding to each of the spaces between the plurality of light-emitting elements, and a second light-shielding pattern provided on the first insulating layer superimposed on the first light-shielding pattern, wherein the second light-shielding pattern includes a central part and an edge portion around the central part, and the edge portion can be tilted with respect to the central part.

[0009] In other embodiments of the present invention, the display device may include a plurality of light-emitting elements located on a substrate, a first insulating layer provided on the plurality of light-emitting elements, a plurality of lenses provided on the first insulating layer corresponding to each of the plurality of light-emitting elements, a first light-shielding pattern provided between the substrate and the first insulating layer corresponding to the spaces between the plurality of light-emitting elements, and a second light-shielding pattern provided on the first insulating layer superimposed on the first light-shielding pattern, wherein the first light-shielding pattern may include a central part and an edge portion around the central part, and the edge portion may be tilted with respect to the central part.

[0010] A display device according to another embodiment of the present invention may include: a plurality of light-emitting elements located on a substrate; a first insulating layer provided on the plurality of light-emitting elements; a plurality of lenses located on the first insulating layer corresponding to each of the plurality of light-emitting elements; a first light-shielding pattern corresponding to a region located between the plurality of light-emitting elements between the substrate and the first insulating layer; a second light-shielding pattern superimposed on the first light-shielding pattern on the first insulating layer; and a third light-shielding pattern covering the second light-shielding pattern on the first insulating layer, wherein the third light-shielding pattern may include a central part and an edge portion around the central part, and the edge portion may be tilted with respect to the central part. [Effects of the Invention]

[0011] The display device of the present invention has the following effects.

[0012] Firstly, the display device of the present invention has the effect of preventing light leakage by providing an oblique edge of either a first light-shielding pattern or a second light-shielding pattern that can shield the non-opening, thereby preventing the light from the light-emitting element that is traveling towards the non-opening from being reflected and re-reflected back to the light-emitting element, or preventing the light from being emitted to another lens other than the lens in question, even if it is re-reflected by the oblique edge.

[0013] Secondly, the display device of the present invention has the effect of preventing light leakage and improving the cutoff effect in a display device for viewing angle control.

[0014] Thirdly, the display device of the present invention can prevent light leakage by simply providing a diagonal edge of either the first light-shielding pattern or the second light-shielding pattern on the non-opening side, thus having the effect of reducing production energy. Therefore, the display device of the present invention has ESG (Environment / Social / Governance) effects from the viewpoint of environmental and process optimization.

[0015] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understandable to those skilled in the art from the description below.

Brief Description of the Drawings

[0016] [Figure 1a] It is a plan view of the display device of the present invention. [Figure 1b] It is a plan view in which a part of FIG. 1a is enlarged. [Figure 1c] It is a plan view in which a part of FIG. 1a is enlarged. [Figure 2] It is a plan view of the display device of the present invention according to the first and second embodiments. [Figure 3] It is a cross-sectional view taken along the line I-I' of FIG. 2. [Figure 4a] It is a cross-sectional view taken along the line II-II' of FIG. 2 according to the first embodiment. [Figure 4b] It is a diagram showing the path of light emitted from the light-emitting element of FIG. 4a. [Figure 5] It is a diagram showing various modifications to the A1 region of FIG. 4a. [Figure 6] It is a cross-sectional view taken along the line II-II' of FIG. 2 according to the second embodiment. [Figure 7] It is a diagram showing various modifications to the A2 region of FIG. 6. [Figure 8] It is a plan view of the display device of the present invention according to the third and fourth embodiments. [Figure 9] It is a cross-sectional view taken along the line III-III' of FIG. 8 according to the third embodiment. [Figure 10] It is a cross-sectional view taken along the line III-III' of FIG. 8 according to the fourth embodiment. [Figure 11] It is a diagram showing modifications to the respective A3 and A4 regions of FIGS. 9 and 10. [Figure 12] It is a cross-sectional view of the display device of the present invention according to the fifth embodiment. [Figure 13a] It is a graph showing the light intensity according to the viewing angle of the display device of the present invention for each of the first to fourth embodiments. [Figure 13b] It is a graph showing the light intensity according to the viewing angle of the display device of the present invention for each of the first to fourth embodiments. [Figure 13c]It is a graph showing the light intensity according to the viewing angle of the display device of the present invention for each of the first to fourth embodiments. [Figure 13d] It is a graph showing the light intensity according to the viewing angle of the display device of the present invention for each of the first to fourth embodiments.

Modes for Carrying Out the Invention

[0017] The advantages and features of this specification and the methods for achieving them will become clear by referring to various examples described in detail hereinafter based on the accompanying drawings. However, this specification is not limited to the various examples disclosed below, and can be embodied in various different forms. Merely, the various examples in this specification complete the disclosure of this specification, and are provided to fully inform those with ordinary knowledge in the technical field to which the technical idea of this specification belongs of the scope of the technical idea of this specification. The examples in this specification are only defined by the scope of the claims.

[0018] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the various examples of this specification are exemplary, and thus are not limited to the matters shown in the drawings of this specification. The same reference numerals throughout the specification refer to the same components. Also, in the description of this specification, when it is determined that a specific description of related known technologies may unnecessarily obscure the gist of this specification, the detailed description thereof will be omitted.

[0019] When using terms such as "including", "having", "becoming", etc. referred to in this specification, other parts can be added unless "only" is used. When expressing a component in the singular, it includes the case of including a plurality unless there is a specific explicit description.

[0020] When interpreting a component, it is interpreted as including an error range even without a separate explicit description.

[0021] When describing the relative positions of two parts, for example, by using phrases like "on top of," "above," "below," or "next to," one or more other parts can be located between the two parts, unless "immediately" or "directly" is used.

[0022] When describing temporal relationships, for example, when describing temporal sequence using phrases like "after," "following," "next," or "before," it can include cases that are not continuous, unless "immediately" or "directly" is used.

[0023] The terms "first," "second," etc., are used to describe various components, but these components are not limited to these terms. These terms are used simply to distinguish one component from others. Therefore, the first component mentioned below may also be the second component within the technical concepts of this specification.

[0024] The terms "first horizontal axis direction," "second horizontal axis direction," and "vertical axis direction" should not be interpreted solely as vertical geometric relationships between them, but rather may mean that the configuration specified herein has a broader range of directions within which it can function.

[0025] The term "at least one" should be understood to include all possible combinations of one or more related items. For example, "at least one of items 1, 2, and 3" could mean not just each of items 1, 2, or 3 individually, but all possible combinations of items that can be presented from two or more of items 1, 2, and 3.

[0026] The features of the various embodiments described herein can be combined or linked together in part or in whole, enabling a variety of technical interdependencies and drives, and each example can be implemented independently of the others or together in a related manner.

[0027] When assigning reference numerals to the components in each figure, the same reference numeral can be used for the same component, even if it is shown in other drawings, for example. Furthermore, the scale of the components shown in the attached drawings is different from the actual scale for the sake of explanation, and is not limited to the scale shown in the drawings.

[0028] In the following sections, preferred examples of display devices according to the embodiments of this specification will be described in detail with reference to the accompanying drawings.

[0029] Figures 1a to 1c are plan views of the display device of the present invention.

[0030] Referring to Figures 1a to 1c, the display device of the present invention may include a plurality of unit pixels, including a first subpixel SP1, a second subpixel SP2, and a third subpixel SP3. Each of the first to third subpixels SP1, SP2, and SP3 may be a subpixel that emits a different hue from each other. For example, each of the first to third subpixels SP1 to SP3 may be a subpixel that emits one of the following colors: red, green, and blue.

[0031] The first to third subpixels SP1, SP2, and SP3 can have different area ratios from each other. This allows the first lower electrode 171a and the second lower electrode 171b of each of the first to third subpixels SP1, SP2, and SP3, as well as the light-emitting parts and apertures OA1 and OA2 of each of the first to third subpixels SP1, SP2, and SP3, to have different area ratios from the other subpixels. The area of ​​each of the first to third subpixels SP1, SP2, and SP3 can be determined considering the lifetime and luminous efficiency of the light-emitting element corresponding to the hue of each subpixel. That is, a subpixel that emits short-wavelength light may have a larger area than the other subpixels, and a subpixel that emits long-wavelength light may have a smaller area than the other subpixels. Therefore, the present invention makes it possible to make the lifetime and luminous efficiency of the corresponding light-emitting elements uniform by making the area ratios of subpixels that emit light of different hues different from each other. For example, as shown in Figures 1a to 1c, the second subpixel SP2 may have a larger area than the first and third subpixels SP1 and SP3, and the third subpixel SP3 may have a smaller area than the first and second subpixels SP1 and SP2. However, the present invention is not limited thereto, and the arrangement of the first to third subpixels SP1, SP2, and SP3 and their respective area ratios may differ.

[0032] Such first subpixels SP1 and second subpixels SP2 may be arranged alternately in the second direction D2. The third subpixel SP3 may be arranged adjacent to the first subpixels SP1 and second subpixels SP2 in the first direction D1 which intersects the second direction D2. Here, the first direction D1 and the second direction D2 may be directions that intersect perpendicularly to each other. However, the arrangement structure of the first to third subpixels SP1, SP2, SP3 of the present invention is not limited thereto.

[0033] Referring together to Figures 1b and 1c, each of the first to third subpixels SP1, SP2, and SP3 can include a first lower electrode 171a and a second lower electrode 171b. The first lower electrode 171a and the second lower electrode 171b are configured independently of each other and can be driven independently by different drive circuits. In some cases, the second lower electrode 171b can include a plurality of second apertures OA2, where a plurality of second lower electrodes may be provided, each corresponding to a plurality of apertures.

[0034] The first lower electrode 171a and the second lower electrode 171b may have different areas. Furthermore, the first lower electrode 171a of each of the first to third subpixels SP1, SP2, and SP3 may have different area ratios. Therefore, the second lower electrode 171b of each of the first to third subpixels SP1, SP2, and SP3 may also have different area ratios.

[0035] The length of the first lower electrode 171a may be longer in the first direction D1 than in the second direction D2. The first lower electrode 171a may contain one first opening OA1. The second lower electrode 171b may also be longer in the first direction D1 than in the second direction D2. The second lower electrode 171b may contain multiple second openings OA2. On the other hand, the region excluding the first and second openings OA1 and OA2 can be defined as a non-opening region.

[0036] The apertures OA1 and OA2 may be regions from which emitted light is released. For example, the apertures OA1 and OA2 may be regions exposed from a bank (115 in Figure 3) provided between light-emitting elements (170a in Figure 3). In other words, the apertures OA1 and OA2 may be regions from which light-emitting elements 170a, where the lower electrode and upper electrode face each other with an intermediate layer in between, emit light. In such apertures OA, the first aperture OA corresponding to the first lower electrode 171a and the respective second apertures OA2 corresponding to the second lower electrode 171b may have different areas from each other.

[0037] A first opening OA1 corresponding to the first lower electrode 171a may be provided in a first direction D1 of the first lower electrode 171a. The length of the first opening OA1 in the first direction D1 may be longer than the length in the second direction D2.

[0038] Multiple second openings OA2 corresponding to the second lower electrode 171b may be arranged side by side within the second lower electrode 171b, spaced apart from each other in the first direction D1. Each of the multiple second openings OA2 may have a length in the first direction D1 that is approximately the same as the length in the second direction D2.

[0039] The device may include a first lens L1 and a plurality of second lenses L2, each corresponding to the first aperture OA1 of the first lower electrode 171a and a plurality of second apertures OA2 of the second lower electrode 171b. The first lens L1 and the plurality of second lenses L2 may have different shapes from each other. Furthermore, the first lens L1 and each of the second lenses L2 may have different area ratios from each other on a plane.

[0040] The first lens L1 may have a length in the first direction D1 that is longer than the second direction D2, corresponding to the first aperture OA1 of the first lower electrode 171a. The first lens L1 may be large enough to cover at least the entire first aperture OA1 of the first lower electrode 171a. Furthermore, the first lens L1 may have a larger area than the first aperture OA1 and exceed at least the length in the first direction D1 of the first lower electrode 171a, and may be mounted on the first lower electrode 171a. Such a first lens L1 may consist of a semi-cylindrical lens having a length in the first direction D1. More specifically, the first lens L1 may consist of an elliptical lens cut along its long axis.

[0041] A semi-cylindrical first lens L1 may have a rectangular cross-section on a plane and a semi-circular cross-section on a cross-section cut along a cutting line in the second direction D2. Alternatively, a semi-elliptical first lens L1 may have an elliptical cross-section on a plane. Such a first lens L1 does not restrict the field of view in the first direction D1, but can restrict the field of view in the second direction D2.

[0042] Each of the second lenses L2 may be large enough to completely cover each of the multiple second apertures OA2 of the second lower electrode 171b. Furthermore, the length in the first direction D1 of each second lens L2 may be shorter than the length in the first direction D1 of the first lens L1. Such multiple second lenses L2 may consist of hemispherical lenses.

[0043] The hemispherical second lens L2 has a circular cross-section on a plane and may have a semicircular cross-section on the cross-section cut along the respective cutting lines in the first direction D1 and the second direction D2. Such a hemispherical second lens L2 can limit the field of view in the first direction D1 and the second direction D2.

[0044] Such a display device of the present invention may be a field of view control display device that limits the field of view by comprising a semi-elliptical first lens L1 corresponding to the first lower electrode 171a and a plurality of hemispherical second lenses L2 corresponding to the second lower electrode 171b. By having different field of view limiting directions for the first lens L1 and the second lenses L2, the display device of the present invention can selectively realize wide field of view and narrow field of view.

[0045] Figure 2 is a plan view of the display device of the present invention according to the first and second embodiments. In Figure 2, the plan views of the first and second embodiments are identical, so the reference numerals of the first embodiment are typically used. Figure 3 is a cross-sectional view of the light-emitting array along the line I-I' in Figure 2, and Figures 4a and 4b are cross-sectional views of the first embodiment along the line II-II' in Figure 2. Here, Figure 4b is a diagram showing the path of light emitted from any one light-emitting element in the display device of the present invention according to Figure 4a.

[0046] Referring to Figure 2, the display device of the present invention according to the first embodiment may be provided with a first light-shielding pattern 210 and a second light-shielding pattern 230 in the non-opening area. The first light-shielding pattern 210 and the second light-shielding pattern 230 may have different widths. The second width of the second light-shielding pattern 230 (W2 in Figure 4a) according to the first embodiment may be greater than the first width of the first light-shielding pattern 210 (W1 in Figure 4a).

[0047] The first light-shielding pattern 210 may be positioned on the entire surface of the substrate 110, spaced apart from each edge of the lens 240, and exposing the lens 240.

[0048] The second light-shielding pattern 230 may expose at least the respective apertures OA1 and OA2 of the lens 240 and may overlap with a portion of the respective edges of the lens 240. Multiple such second light-shielding patterns 230 may be patterned on the substrate 110. Multiple second light-shielding patterns 230 may be connected to each other via connecting patterns.

[0049] Figure 3 is a cross-sectional view of a light-emitting array 100 provided on a substrate 110 of the display device of the present invention. Referring to Figure 3, the light-emitting array 100 may include a configuration provided between the substrate 110 and the sealing layer 180. The substrate 110 may be provided with a number of transistor TFTs, light-emitting elements 170a connected to each of them, and a sealing layer 180 covering the multiple light-emitting elements 170a. The light-emitting elements 170a may be superimposed on an aperture OA.

[0050] The substrate 110 is divided into a display area where the screen is displayed and an outer area where the screen is not displayed. The display area may consist of a repeating arrangement of multiple subpixels (SP1, SP2, SP3 in Figure 1). Each of the multiple subpixels SP1, SP2, SP3 may consist of a light-emitting portion where light is actually emitted and a non-light-emitting portion where light is not emitted around the light-emitting portion. In this invention, the light-emitting portion may be superimposed on an opening OA provided on the substrate 110. For example, if the substrate 110 is a plastic substrate, it may include polyimide or polyamide.

[0051] On the substrate 110, various signal wirings such as data signals and gate signals, transistors such as drive thin-film transistors, switching thin-film transistors, and sensing thin-film transistors, and capacitors may be provided for each light-emitting element 170a. For convenience of explanation, the present invention shows a single transistor TFT that drives each of the light-emitting elements 170a.

[0052] The transistor TFT includes an active layer 37 and a gate electrode 43 superimposed on the channel region 35 of the active layer 37 with a gate insulating film 41 interposed between them, and may include a source electrode 51 and a drain electrode 53 connected to both sides of the active layer 37, respectively.

[0053] The active layer 37 may have a source region 31 and a drain region 33 on either side of a channel region 35. Each of the source region 31 and the drain region 33 may be formed of a semiconductor material into which n-type or p-type impurities have been implanted. The channel region 35 superimposed on the gate electrode 43 may be formed of a semiconductor material into which n-type or p-type impurities have not been implanted.

[0054] The gate electrode 43 may be provided superimposed on the channel region 35 of the active layer 37 with a gate insulating film 41 in between, having the same width as the channel region 35 of the active layer 37. The gate insulating film 41 may be superimposed on the channel region 35 of the active layer 37 in the same pattern as the gate electrode 43. For example, the gate electrode 43 may be a single layer or multiple layer made of one of the following: molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. On the other hand, the gate insulating film 41 may be made of an inorganic insulating material, such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), or a multiple layer thereof.

[0055] On the other hand, the light-shielding layer 21 on the substrate 110 overlaps with at least the channel region 35 of the active layer 37 of the transistor TFT and is positioned below the active layer 37. The light-shielding layer 21 prevents external light from passing through the substrate 110 and being transmitted to the transistor TFT. For example, the light-shielding layer 21 may consist of a single layer of a metallic material such as molybdenum (Mo), titanium (Ti), aluminum-neodymium (AlNd), aluminum (Al), or chromium (Cr) or an alloy thereof, or it may have a multilayer structure using these materials.

[0056] The buffer film 111 on the light-shielding layer 21 can cover the light-shielding layer 21. For example, the buffer film 111 may have a single or multiple layer structure of silicon oxide (SiOx) or silicon nitride (SiNx).

[0057] The interlayer insulating film 112 on the buffer film 111 includes source contact holes and drain contact holes that expose the source region 31 and drain region 33 of the active layer 37, respectively, and can cover the gate insulating film 41 and gate electrode 43. For example, the interlayer insulating film 112 may consist of an inorganic insulating material. For example, the interlayer insulating film 112 may consist of one or more layers of silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiOxNy).

[0058] A source electrode 51 and a drain electrode 53 may be provided as the same layer on the interlayer insulating film 112. Each of the source electrode 51 and the drain electrode 53 is connected to the source region 31 and the drain region 33 of the active layer 37 through source contact holes and drain contact holes, respectively. For example, the source electrode 51 and the drain electrode 53 may consist of a single layer of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), or copper (Cu) or alloys thereof, or have a multilayer structure using these materials.

[0059] The passivation layer 113 on the interlayer insulating film 112 can cover the transistor TFT. Therefore, the transistor TFT can be protected by the passivation layer 113. For example, the passivation layer 113 is a type of inorganic insulating film and may consist of one or more layers of silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiOxNx).

[0060] A flat film 114 may be provided on the passivation layer 113. The flat film 114 is formed to a thickness sufficient to adequately flatten the surface step on the top of the transistor TFT and may be formed of an organic insulating film. In some cases, the passivation layer 113 may be omitted when the flat film 114 also serves to protect the transistor TFT. For example, the flat film 114 is a type of organic insulating film, and may be one of the following: photoacrylic, polyimide, benzocyclobutene resin, or acrylate, and may be formed in multiple layers.

[0061] A light-emitting element 170a may be provided on the flat film 114, including a first lower electrode 171a, an intermediate layer 173, and an upper electrode 175. The light-emitting element 170a can be driven by the emission of light from the intermediate layer 173 due to the formation of an electric field between the first lower electrode 171a and the upper electrode 175.

[0062] The first lower electrode 171a may be formed as a multilayer structure including a transparent conductive film and an opaque conductive film with high reflectivity. The transparent conductive film of the first lower electrode 171a is made of a material with a relatively high work function value, such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the opaque conductive film may consist of a single layer or multilayer of any one of the following selected from the group consisting of silver (Ag), aluminum (Al), copper (Cu), molybdenum (Mo), titanium (Ti), nickel (Ni), chromium (Cr), or tungsten (W), or an alloy thereof. For example, the first lower electrode 171a may be formed as a structure in which a transparent conductive film, an opaque conductive film, and a transparent conductive film are sequentially laminated, or as a structure in which a transparent conductive film and an opaque conductive film are sequentially laminated.

[0063] The bank 115 covering the edge of the first lower electrode 171a forms an opening OA that exposes the light-emitting element 170a and may be provided on the entire surface of the flat film 114. Optionally, the bank 115 may contain a light-absorbing material. In this case, the bank 115 may contain a black dye. Thus, the display device of the present invention can prevent light interference and light leakage between adjacent subpixels. An intermediate layer 173 may be provided over the entire area of ​​the substrate 110 on the first and second lower electrodes 171a, 171b and bank 115. Specifically, the intermediate layer 173 can also mean an organic layer of a single stack consisting of multiple layers including a hole injection layer, a hole transport layer, an emissive layer, an electron transport layer, and an electron injection layer. In some cases, the intermediate layer 173 may be a tandem structure including multiple stacks (first stack, second stack) each having a first and second emissive layer, and a charge generation layer between the stacks. The tandem structure is not limited to the two-stack structure shown in the figure, but can also be three or more stacks. Here, the first and second emissive layers in the multiple stacks are emissive layers of the same color that emit one of the following light colors: red, green, and blue, and may be provided in a patterned manner on each of the multiple subpixels SP1, SP2, SP3.

[0064] The upper electrode 175 on the interlayer 173 can be formed over the entire surface of the substrate 110 via a common mask. For example, the upper electrode 175 may consist of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or it may also consist of silver (Ag), aluminum (Al), magnesium (Mg), calcium (Ca), or alloys thereof, having a thickness thin enough to allow light to pass through.

[0065] An sealing layer 180 may be provided on the upper electrode 175 so as to cover the entire display area and non-display area on the substrate 110. The sealing layer 180 extends the lifespan of the light-emitting device by preventing oxygen and moisture from penetrating the light-emitting element 170a. As an example, the sealing layer 180 may be formed in a form in which one or more pairs of inorganic sealing films and organic sealing films are laminated.

[0066] Referring to Figure 4a, the display device of the present invention may include a first insulating layer 220 provided on a sealing layer 180, a lens 240 provided on the first insulating layer 220 corresponding to each of the plurality of light-emitting elements 170a, a first light-shielding pattern 210 provided between the substrate 110 and the first insulating layer 220 corresponding to each of the plurality of light-emitting elements 170a, and a second light-shielding pattern 230 provided on the first insulating layer 220 superimposed on the first light-shielding pattern 210. In the display device of the present invention according to the first embodiment, the center of the second light-shielding pattern 230 and the surrounding edge of the center may form a first angle θ1.

[0067] The first insulating layer 220 may be provided over the entire area of ​​the sealing layer 180. In the first embodiment, the first insulating layer 220 may have protrusions CVA for each area on the substrate 110 corresponding to the non-aperture NOA. The protrusions CVA may be provided along the edge of the lens 240 in the non-aperture NOA. Such protrusions CVA may protrude in the opposite direction from the substrate 110 than the flat portion FA. On the other hand, the first insulating layer 220 without the protrusions CVA may consist of flat portions FA. Here, the first insulating layer 220 may be formed to include flat portions FA and protrusions CVA by a process using a half-tone mask.

[0068] The protrusions CVA of the first insulating layer 220 may be provided along each edge of the lens 240. In some cases, the edges of the protrusions CVA of the first insulating layer 220 may partially overlap with each edge of the lens 240. That is, the protrusions CVA of the first insulating layer 220 may be located along the edge of the opening OA. The protrusions CVA of the first insulating layer 220 may include an upper surface 220a parallel to the flat portion FA and a side surface 220b inclined toward the substrate 110 from the upper surface 220a. In the protrusions CVA of the first insulating layer 220, the first angle θ1 formed by the upper surface 220a and the side surface 220b may be 90° or more and less than 180°. The second angle θ2 formed by the side surface 220b of the protrusion CVA with respect to the substrate 110 may be acute. Here, the second angle θ2 of the convex CVA with respect to the side surface 220b can be approximately 70° when the vertical separation distance between the surface of the flat portion FA and the upper surface 220a of the convex CVA is approximately 3 μm, achieved by a process using a halftone mask. A second light-shielding pattern 230 may be placed on the upper part of the convex CVA of the first insulating layer 220, and a first light-shielding pattern 210 may be placed on the lower part. Such a convex CVA can form a bend in the second light-shielding pattern 230.

[0069] The flat portion FA of the first insulating layer 220 may constitute the region excluding the convex portion CVA. The flat portion FA is connected to the side surface 220b of the convex portion CVA, and a lens 240 may be positioned on the upper part corresponding to each of the multiple light-emitting elements 170a. In other words, the lens 240 may be positioned on the flat portion FA of the first insulating layer 220 that overlaps with the aperture OA. On the other hand, the lens 240 may overlap with a portion of the convex portion CVA outside the flat portion FA of the first insulating layer 220.

[0070] The first light-shielding pattern 210 and the second light-shielding pattern 230 may be provided on the protrusion CVA with a first insulating layer 220 interposed therebetween. The first light-shielding pattern 210 and the second light-shielding pattern 230 may be made of different materials. Furthermore, the first light-shielding pattern 210 and the second light-shielding pattern 230 may have different reflectances. Such the first light-shielding pattern 210 and the second light-shielding pattern 230 may have different widths, and one of them may be formed to be more inclined from the center to the edge. In the display device according to the first embodiment, the second width W2 of the second light-shielding pattern 230 may be wider than the first width W1 of the first light-shielding pattern 210, and the edge of the second light-shielding pattern 230 may be formed to be more inclined than the center.

[0071] The first light-shielding pattern 210 may be provided on the sealing layer 180, except for a predetermined area corresponding to the opening OA. The first light-shielding pattern 210 may be provided so as to overlap with the upper surface 220a of the convex portion CVA between the flat portion FA of the first insulating layer 220. The first light-shielding pattern 210 can expose at least the second light-shielding pattern 230, which overlaps with the side surface 220b of the first insulating layer 220, to the substrate 110 side. Furthermore, considering the angle at which the light from the light-emitting element is incident, the first light-shielding pattern 210 can also expose the second light-shielding pattern 230, which overlaps with the edge of the upper surface 220a connected to the side surface 220b of the first insulating layer 220, to the substrate 110 side. In other words, the first light-shielding pattern 210 can partially overlap with the upper surface 220a of the first insulating layer 220.

[0072] The first light-shielding pattern 210 may contain a light-absorbing material. For example, the first light-shielding pattern 210 may contain a black dye. Such a first light-shielding pattern 210 can prevent light interference and light leakage between adjacent subpixels. Even if the first light-shielding pattern 210 contains a light-absorbing material, it may still have a certain amount of reflectivity. A first light-shielding pattern 210 containing a typical light-absorbing material may have a reflectivity of about 4.6%.

[0073] The second light-shielding pattern 230 may be provided on the protrusion CVA of the first insulating layer 220. That is, the second light-shielding pattern 230 may be provided along the edge of each lens 240. Such a second light-shielding pattern 230 may be provided along the shape of the upper surface 220a and the side surface 220b of the protrusion CVA of the first insulating layer 220. The second light-shielding pattern 230 is divided into a central part that contacts the upper surface 220a of the protrusion CVA of the first insulating layer 220 and an edge that contacts the side surface 220b, and the shape may become inclined from the center to the edge depending on the shape of the protrusion CVA of the first insulating layer 220. In other words, the edge of the second light-shielding pattern 230 may form a first angle θ1 with respect to the center. Here, the first angle θ1 may be between 90° and 180°, depending on the shape of the protrusion CVA of the first insulating layer 220. Furthermore, the second light-shielding pattern 230 has a central portion that contacts the upper surface 220a of the protrusion CVA of the first insulating layer 220, which overlaps with the first light-shielding pattern 210, and an edge portion that contacts the side surface 220b of the protrusion CVA of the first insulating layer 220 can be exposed from the first light-shielding pattern 210 towards the substrate 110. Therefore, the light from the light-emitting element 170a traveling between the lenses 240 can be incident on the second light-shielding pattern 230 exposed from the first light-shielding pattern 210, and when it is reflected between the first light-shielding pattern 210 and the second light-shielding pattern 230 by the inclined edge portion of the second light-shielding pattern 230 or reflected at an acute angle by the inclined edge portion of the second light-shielding pattern 230 and re-reflected by a metal-like component on the light-emitting element 170a side, it travels to a region farther away than the adjacent lens, thus reducing the probability of reaching a lens other than the one in question. Therefore, the amount of light from the light-emitting element 170a traveling between the lenses 240 that reaches other lenses can be significantly reduced.

[0074] The second light-shielding pattern 230 may be made of metal. For example, the second light-shielding pattern 230 may be a touch electrode. In this case, the second light-shielding pattern 230 includes a number of intersecting transmitting electrodes and a number of receiving electrodes, and a touch can be sensed from the amount of capacitance variation between the number of transmitting electrodes and the number of receiving electrodes. Referring to Figure 2, the illustrated second light-shielding pattern 230, in the case of a touch electrode, is either one of a transmitting electrode or a receiving electrode, and may further include connecting electrodes that electrically connect the transmitting electrode and the receiving electrode. A second light-shielding pattern 230 made of a normal metallic material may have a reflectivity of about 50%.

[0075] Referring to Figure 4b, the light emitted from the light-emitting element 170a on the substrate 110 passes through the aperture OA, and a portion can proceed to the non-aperture NOA side. The light emitted from the light-emitting element 170a that proceeds to the non-aperture NOA can reach the first light-shielding pattern 210 and the second light-shielding pattern 230 between the lenses 240. Referring to LE11, LE12, and LE13 in Figure 4b, a portion of the light emitted from the light-emitting element 170a that reaches the first light-shielding pattern 210 is absorbed, and the remainder can be reflected LE12 to the light-emitting array 100 equipped with the light-emitting element 170a. Then, depending on the configuration of the light-emitting element 170a, such as the lower or upper electrode, it may be re-reflected LE13 to other lenses other than the lens in question. In this way, since the light that reaches the planar first light-shielding pattern 210 is reflected and re-reflected by other lenses other than the lens in question, light leakage may occur. However, the present invention makes it possible to minimize the width of the planar reflective elements by making the first light-shielding pattern 210 narrower than the second light-shielding pattern 230 and having a narrow width between the lenses 240.

[0076] Furthermore, as shown in LE21 and LE22 in Figure 4b, the central part and the inclined edges relative to the central part allow the present invention to significantly reduce the reflection and re-reflection of light emitted from the light-emitting element 170a to other lenses other than the lens in question. Referring to LE21 and LE22, a portion of the light emitted from the light-emitting element 170a that reaches the second light-shielding pattern 230 exposed from the first light-shielding pattern 210 is absorbed, and the remainder is reflected. Here, due to the inclined shape of the second light-shielding pattern 230, this light is reflected towards the first light-shielding pattern 210 and can be repeatedly re-reflected and absorbed LE22 between the first light-shielding pattern 210 and the second light-shielding pattern 230. In this way, the light LE21 that reaches the second light-shielding pattern 230, which is in contact with the side surface 220b of the protrusion CVA of the first insulating layer 220, is trapped between the first light-shielding pattern 210 and the second light-shielding pattern 230, thereby preventing it from traveling to other lenses and thus preventing light leakage.

[0077] On the other hand, the flat layer 250 may be provided on the first insulating layer 220 which is equipped with a second light-shielding pattern 230 and a lens 240. The flat layer 250 can flatten surface steps generated by the surface of the first insulating layer 220, the second light-shielding pattern 230 and lens 240 on the first insulating layer 220, etc. For example, the flat layer 250 may be made of a type of organic insulating material.

[0078] Figure 5 shows various modifications of region A1 in Figure 4a.

[0079] Referring to Figure 5, the third light-shielding pattern may be placed on the second light-shielding pattern 230, the third light-shielding pattern may be placed on the first light-shielding pattern 210, or the third light-shielding pattern may be placed on both the second light-shielding pattern 230 and the first light-shielding pattern 210.

[0080] Referring to Figure 5(a), a third light-shielding pattern 231a may be provided on the second light-shielding pattern 230. The third light-shielding pattern 231a can cover the entire upper surface of the second light-shielding pattern 230. Here, the edges of the third light-shielding pattern 231a may be covered by the lens 240. Such a third light-shielding pattern 231a may contain the same material as the first light-shielding pattern 210.

[0081] Referring to Figure 5(b), a third light-shielding pattern 231b may be provided on a portion of the second light-shielding pattern 230. In this case, the side surface of the third light-shielding pattern 231b may be in contact with the lens 240. The third light-shielding pattern 231b may contain the same material as the first light-shielding pattern 210.

[0082] Referring to Figure 5(c), a third light-shielding pattern 231a may be provided on the second light-shielding pattern 230, and a fourth light-shielding pattern 231c may be provided on the first light-shielding pattern 210. The third light-shielding pattern 231a may cover the entire upper surface of the second light-shielding pattern 230 and may contain the same material as the first light-shielding pattern 210. The fourth light-shielding pattern 231c may be provided on a portion of the first light-shielding pattern 210 and may contain metal. Here, if the first light-shielding pattern 210 is a touch electrode, the fourth light-shielding pattern 231c may be a connecting electrode connecting multiple first light-shielding patterns 210. In this case, the fourth light-shielding pattern 231c may be electrically connected to the first light-shielding pattern 210.

[0083] Figure 6 is a cross-sectional view along the line II-II' in Figure 2 according to the second embodiment. Further explanation of the same configuration will be omitted below.

[0084] Referring to Figure 6, the first insulating layer 320 according to the second embodiment may have recessed CCAs for each region corresponding to the non-opening NOA. The recessed CCAs may be provided along the edge of the lens 340. Such recessed CCAs may be recessed in the direction toward the substrate 110 more than the flat portion FA. On the other hand, the first insulating layer 320 without the recessed CCAs may consist of a flat portion FA.

[0085] The recessed CCA of the first insulating layer 320 may partially overlap with each edge of the lens 340. The recessed CCA may include a bottom surface 320a parallel to the flat portion FA and a side surface 320b between the bottom surface 320a and the surface of the flat portion FA adjacent to the bottom surface 320a. The bottom surface 320a and the side surface 320b of the recessed CCA may form a first angle θ1, where the first angle θ1 may be 90° or more and less than 180°. The side surface 320b of the recessed CCA may form a second angle θ2 with respect to the substrate 110, where the second angle θ2 may be acute. A second light-shielding pattern 330 may be placed on the upper part of the recessed CCA of the first insulating layer 320, and a first light-shielding pattern 310 may be placed on the lower part. Here, the recessed CCA may form a bend in the second light-shielding pattern 330.

[0086] The first light-shielding pattern 310 and the second light-shielding pattern 330 may be provided in each recess CCA with the first insulating layer 320 interposed between them. The first light-shielding pattern 310 and the second light-shielding pattern 330 may be made of different materials. Furthermore, the first light-shielding pattern 310 and the second light-shielding pattern 330 may have different reflectances. Such the first light-shielding pattern 310 and the second light-shielding pattern 330 may have different widths, and one of them may be formed to be inclined from the center to the edge. In the display device according to the second embodiment, the second width W2 of the second light-shielding pattern 330 may be wider than the first width W1 of the first light-shielding pattern 310, and the edge of the second light-shielding pattern 330, which has a relatively wider width, may be formed to be inclined.

[0087] The first light-shielding pattern 310 may be provided on the sealing layer 180, except for a predetermined area corresponding to the opening OA. The first light-shielding pattern 310 may overlap the bottom surface 320a in the recess CCA between the flat portions FA of the first insulating layer 320. That is, the first light-shielding pattern 310 can expose the second light-shielding pattern 330, which overlaps with at least the side surface 320b of the first insulating layer 320, to the substrate 110 side.

[0088] The second light-shielding pattern 330 may be provided on the recessed CCA of the first insulating layer 320. That is, the second light-shielding pattern 330 may be provided along the edge of each lens 340. Such a second light-shielding pattern 330 may be provided along the shape of the bottom surface 320a and side surface 320b of the recessed CCA of the first insulating layer 320. The second light-shielding pattern 330 is divided into a central part that contacts the bottom surface 320a of the recessed CCA of the first insulating layer 320 and an edge part that contacts the side surface 320b, and may be formed to be inclined according to the shape of the recessed CCA of the first insulating layer 320 as it moves from the center to the edge. In other words, the edge of the second light-shielding pattern 330 may be inclined to form a predetermined angle with respect to the substrate 110, i.e., a second angle θ2 due to the first insulating layer 320. Furthermore, the central part of the second light-shielding pattern 330 that contacts the bottom surface 320a of the recessed CCA of the first insulating layer 320 may overlap with the first light-shielding pattern 310. In other words, the edge that contacts the side surface 320b of the recessed CCA of the first insulating layer 320 may be exposed from the first light-shielding pattern 310 towards the substrate 110. Therefore, the light from the light-emitting element 170a traveling between the lenses 340 is incident on the second light-shielding pattern 330 exposed from the first light-shielding pattern 310, is reflected at an acute angle by the inclined edge of the second light-shielding pattern 330, and is re-reflected by the components on the light-emitting element 170a side, thus reducing the amount of light that reaches other lenses.

[0089] Figure 7 shows various modifications of region A2 in Figure 6.

[0090] Referring to Figure 7, the third light-shielding pattern may be placed on the second light-shielding pattern 330, the third light-shielding pattern may be placed on the first light-shielding pattern 310, or the third light-shielding pattern may be placed on both the second light-shielding pattern 330 and the first light-shielding pattern 310.

[0091] Referring to Figure 7(a), a third light-shielding pattern 331a may be provided on the second light-shielding pattern 330. The third light-shielding pattern 331a can cover the entire upper surface of the second light-shielding pattern 330. Here, the edges of the third light-shielding pattern 331a may be covered by the lens 340. Such a third light-shielding pattern 331a may contain the same material as the first light-shielding pattern 310.

[0092] Referring to Figure 7(b), a third light-shielding pattern 331b may be provided on a portion of the second light-shielding pattern 330. In this case, the side surface of the third light-shielding pattern 331b may be in contact with the lens 340. The third light-shielding pattern 331b may contain the same material as the first light-shielding pattern 310.

[0093] Referring to Figure 7(c), a third light-shielding pattern 331a may be provided on the second light-shielding pattern 330, and a fourth light-shielding pattern 331c may be provided on the first light-shielding pattern 310. The third light-shielding pattern 331a may cover the entire upper surface of the second light-shielding pattern 330 and may contain the same material as the first light-shielding pattern 330. The fourth light-shielding pattern 331c may be provided on a portion of the first light-shielding pattern 310 and may contain metal. Here, the fourth light-shielding pattern 331c may be a connecting electrode connecting multiple first light-shielding patterns 310 if the first light-shielding pattern 310 is a touch electrode. In this case, the fourth light-shielding pattern 331c may be electrically connected to the first light-shielding pattern 210.

[0094] Figure 8 is a plan view of the display device of the present invention according to the third and fourth embodiments. In Figure 8, the plan views of the third and fourth embodiments are identical, so the reference numerals for the third embodiment are used as representative references. Figure 9 is a cross-sectional view of the third embodiment along the line III-III' in Figure 8, and Figure 8 is a cross-sectional view of the fourth embodiment as another embodiment relative to Figure 8.

[0095] Referring to Figure 8, the display device of the present invention according to the third embodiment may be provided with a first light-shielding pattern 410 and a second light-shielding pattern 430 on the non-opening NOA. The first light-shielding pattern 410 and the second light-shielding pattern 430 may have different widths. In the third embodiment, the first width W1 of the first light-shielding pattern 410 may be greater than the second width W2 of the second light-shielding pattern 430.

[0096] The first light-shielding pattern 410 according to the third embodiment exposes at least an opening OA that overlaps with the lens 440 and can overlap with a portion of each edge of the lens 440. Such a first light-shielding pattern 410 can be provided on the entire surface of the substrate 110, excluding the opened area.

[0097] The second light-shielding pattern 430 is separated from a portion of the edge of the lens 440, allowing the lens 440 to be exposed. Multiple such second light-shielding patterns 430 may be patterned on the substrate 110. Multiple second light-shielding patterns 430 may be connected to each other via patterned connection patterns.

[0098] Figure 9 is a cross-sectional view along the line III-III' in Figure 8 according to the third embodiment.

[0099] Referring to Figure 9, the third embodiment of the present invention may include a second insulating layer 423 between the sealing layer 180 and the first insulating layer 421. The first light-shielding pattern 410 according to the third embodiment may be provided between the first insulating layer 421 and the second insulating layer 423. Therefore, the third embodiment of the present invention can form a bend in the first light-shielding pattern 410 via the second insulating layer 423.

[0100] The first and second insulating layers 421 and 423 may be provided on the entire surface of the sealing layer 180. In the third embodiment, the second insulating layer 423 may have protrusions CVA for each region on the substrate 110 corresponding to the non-aperture NOA. The protrusions CVA may be provided within the non-aperture NOA along the edge of the lens 240. Such protrusions CVA may be portions that protrude in the opposite direction from the substrate 110 than the flat portion FA. On the other hand, the second insulating layer 423 without the protrusions CVA may be the flat portion FA.

[0101] The protrusions CVA of the second insulating layer 423 may be provided along each edge of the lens 440. Optionally, the edges of the protrusions CVA of the second insulating layer 423 may partially overlap with each edge of the lens 440. The protrusions CVA of the second insulating layer 423 may include an upper surface 423a parallel to the flat portion FA and a side surface 423b inclined toward the substrate 110 from the upper surface 423a. The first angle θ1 formed by the upper surface 423a and the side surface 423b of the protrusion CVA may be 90° or more and less than 180°. The second angle θ2 formed by the side surface 423b of the protrusion CVA with respect to the substrate 110 may be acute. A first light-shielding pattern 410 may be placed on top of the protrusions CVA of the second insulating layer 423.

[0102] The first insulating layer 421 may be provided on the second insulating layer 423 and the first light-shielding pattern 410. On the upper part of the first insulating layer 421, a lens 440 may be provided in the region overlapping with the flat portion FA of the second insulating layer 423, and a second light-shielding pattern 430 may be provided in the region overlapping with the convex portion CVA of the second insulating layer 423. On the other hand, the lens 440 may extend beyond the flat portion FA of the second insulating layer 423 and overlap with a part of the convex portion CVA outside the flat portion FA.

[0103] A first light-shielding pattern 410 and a second light-shielding pattern 430 may be provided on the protrusion CVA with a first insulating layer 421 interposed therebetween. The first light-shielding pattern 410 and the second light-shielding pattern 430 may be made of different materials. Furthermore, the first light-shielding pattern 410 and the second light-shielding pattern 430 may have different reflectances. In the display device according to the third embodiment, the first width W1 of the first light-shielding pattern 410 may be wider than the second width W2 of the second light-shielding pattern 430, and the edge of the relatively wider first light-shielding pattern 410 may be inclined.

[0104] The first light-shielding pattern 410 may be provided on the protrusion CVA of the second insulating layer 423. That is, the first light-shielding pattern 410 may be provided along the edge of each lens 440. Such a first light-shielding pattern 410 may be provided along the shape of the upper surface 423a and the side surface 423b of the protrusion CVA of the second insulating layer 423. The first light-shielding pattern 410 may be divided into a central part that contacts the upper surface 423a of the protrusion CVA of the second insulating layer 423 and an edge that contacts the side surface 423b, and may be formed so that it is inclined according to the shape of the protrusion CVA of the second insulating layer 423 from the center to the edge. In other words, the edge of the first light-shielding pattern 410 may be formed to be inclined at a predetermined angle with respect to the substrate 110, i.e., a second angle θ2 due to the second insulating layer 423. Furthermore, the central part of the first light-shielding pattern 410 that contacts the upper surface 423a of the protrusion CVA of the second insulating layer 423 overlaps with the second light-shielding pattern 430, and the edge that contacts the side surface 423b of the protrusion CVA of the second insulating layer 423 can be exposed from the second light-shielding pattern 430 to the opposite side of the substrate 110. Therefore, the light from the light-emitting element 170a traveling between the lenses 440 is reflected at an acute angle by the inclined edge of the first light-shielding pattern 410 and re-reflected by the reflective components on the light-emitting element 170a side, thereby reducing the amount of light that reaches other lenses. Here, the reflective components on the light-emitting element 170a side may include the lower electrode (171a in Figure 3) and the upper electrode (175 in Figure 3).

[0105] On the other hand, the second light-shielding pattern 430 may be provided on the first insulating layer 421. The second light-shielding pattern 430 may overlap the upper surface 423a of the convex portion CVA between the flat portion FA of the second insulating layer 423. Since the second light-shielding pattern 430 is made of metal, in order to minimize interference between metals, the second light-shielding pattern 430 placed between the lenses 440 may be formed to have the minimum width. However, the second light-shielding pattern 430 according to the third embodiment of the present invention is not limited thereto and may, in some cases, overlap with adjacent lenses 440.

[0106] Figure 10 is a cross-sectional view along the line III-III' in Figure 8 according to the fourth embodiment.

[0107] Referring to Figure 10, the second insulating layer 523 according to the fourth embodiment may have recessed CCAs for each region corresponding to the non-opening NOA. The recessed CCAs may be provided along the edge of the lens 540. Such recessed CCAs may be recessed in the direction of the substrate 110 rather than the flat portion FA. On the other hand, the second insulating layer 523 without the recessed CCAs may be the flat portion FA.

[0108] The recessed CCA of the second insulating layer 523 may partially overlap with each edge of the lens 540. The recessed CCA may include a bottom surface 523a parallel to the flat portion FA and a side surface 523b between the bottom surface 523a and the surface of the flat portion FA adjacent to the bottom surface 523a. The side surface 523b and the bottom surface 523a of the recessed CCA may form a first angle θ1, where the first angle θ1 may be 90° or more and less than 180°. The side surface 523b of the recessed CCA may form a second angle θ2 with respect to the substrate 110, where the second angle θ2 of the side surface 523b of the recessed CCA may be acute. A first light-shielding pattern 510 may be placed on top of the recessed CCA of the second insulating layer 523. Here, the recessed CCA may form a bend in the first light-shielding pattern 510.

[0109] The first light-shielding pattern 510 and the second light-shielding pattern 530 may be provided in each recess CCA with the first insulating layer 521 interposed therebetween. The first light-shielding pattern 510 and the second light-shielding pattern 530 may be made of different materials. Furthermore, the first light-shielding pattern 510 and the second light-shielding pattern 530 may have different reflectances. In the display device according to the fourth embodiment, the first width W1 of the first light-shielding pattern 510 may be wider than the second width W2 of the second light-shielding pattern 530, and the edge of the relatively wider first light-shielding pattern 510 may be inclined.

[0110] The first light-shielding pattern 510 may be provided on the recessed CCA of the second insulating layer 523. That is, the first light-shielding pattern 510 may be provided along the edge of each lens 540. Also, the first light-shielding pattern 510 may be provided on the second insulating layer 523 except for a predetermined area corresponding to the recessed CCA. Such a first light-shielding pattern 510 may be formed in a shape corresponding to the shape of the bottom surface 523a and side surface 523b of the recessed CCA of the second insulating layer 523. The first light-shielding pattern 510 is divided into a central part that contacts the bottom surface 523a of the recessed CCA of the second insulating layer 523 and an edge part that contacts the side surface 523b, and the shape may be inclined from the center to the edge according to the shape of the recessed CCA of the second insulating layer 523. In other words, the edge part of the first light-shielding pattern 510 may be inclined at a predetermined angle with respect to the substrate 110, i.e., at a second angle θ2 due to the second insulating layer 523. Furthermore, the central part of the first light-shielding pattern 510 that contacts the bottom surface 523a of the recessed CCA of the second insulating layer 523 overlaps with the second light-shielding pattern 530, and the edge that contacts the side surface 523b of the recessed CCA of the second insulating layer 523 can be exposed from the second light-shielding pattern 530 to the opposite side of the substrate 110. Therefore, the light from the light-emitting element 170a traveling between the lenses 540 is reflected at an acute angle by the inclined edge of the first light-shielding pattern 510 and re-reflected by the reflective components on the light-emitting element 170a side, thereby reducing the amount of light that reaches other lenses.

[0111] On the other hand, the second light-shielding pattern 530 may be provided on the first insulating layer 521. The second light-shielding pattern 530 may overlap with the bottom surface 523a of the recess CCA between the flat portions FA of the second insulating layer 523. Since the second light-shielding pattern 530 is made of metal, in order to minimize interference between metals, the second light-shielding pattern 530 provided between the flat portions FA, i.e., between the lenses 540, may be formed to have the minimum width. However, the second light-shielding pattern 530 according to the fourth embodiment of the present invention is not limited thereto and may, in some cases, overlap with adjacent lenses 540.

[0112] Figure 11 shows modified examples of the A3 and A4 regions in Figures 9 and 10, respectively.

[0113] Referring to Figure 11, a third light-shielding pattern 431a, 531a may be placed on the first light-shielding patterns 410, 510. Although not shown, a light-shielding pattern containing the same material as the first light-shielding patterns 410, 510 may be provided on the second light-shielding patterns 430, 530.

[0114] Referring to Figure 11(a), a third light-shielding pattern 431a may be placed on a first light-shielding pattern 410. The third light-shielding pattern 431a is provided on a portion of the first light-shielding pattern 410 and may include metal. Here, the third light-shielding pattern 431a may be a connecting electrode connecting multiple first light-shielding patterns 410 if the first light-shielding pattern 410 is a touch electrode. In this case, the third light-shielding pattern 431a may be electrically connected to the first light-shielding pattern 410.

[0115] Referring to Figure 11(b), a third light-shielding pattern 531a may be placed on the first light-shielding pattern 510. The third light-shielding pattern 531a is provided on a portion of the first light-shielding pattern 510 and may include metal. Here, the third light-shielding pattern 531a may be a connecting electrode connecting multiple first light-shielding patterns 510 if the first light-shielding pattern 510 is a touch electrode. In this case, the third light-shielding pattern 531a may be electrically connected to the first light-shielding pattern 510.

[0116] Figure 12 is a cross-sectional view of the display device of the present invention according to the fifth embodiment.

[0117] A display device according to a fifth embodiment of the present invention is provided with a first light-shielding pattern 611 corresponding to a non-opening NOA on a sealing layer 180, a first insulating layer 620 extending over the entire substrate 110 on the first light-shielding pattern 611, a second light-shielding pattern 630 and a third light-shielding pattern 613 on the convex portion CVA of the first insulating layer 620, and a lens 640 may be provided on the flat portion FA of the first insulating layer 620 that overlaps with the opening OA.

[0118] The first insulating layer 620 may be provided on the entire surface of the sealing layer 180. In the fifth embodiment, the first insulating layer 620 may have protrusions CVA for each region of the substrate 110 corresponding to the non-aperture NOA. The protrusions CVA may be provided along the edge of the lens 640 within the non-aperture NOA. On the other hand, the first insulating layer 620 without the protrusions CVA may be a flat portion FA.

[0119] The protrusions CVA of the first insulating layer 620 may be provided along each edge of the lens 640. The protrusions CVA of the first insulating layer 620 may be located along the edge of the opening OA. The protrusions CVA of the first insulating layer 620 may include an upper surface 620a parallel to the flat portion FA and a side surface 620b inclined toward the substrate 110 from the upper surface 620a. The first angle θ1 formed by the upper surface 620a and the side surface 620b of the protrusion CVA may be 90° or more and less than 180°. The second angle θ2 formed by the side surface 620b of the protrusion CVA with respect to the substrate 110 may be acute. A second light-shielding pattern 630 and a third light-shielding pattern 613 may be arranged in order above the protrusions CVA of the first insulating layer 620, and a first light-shielding pattern 611 may be arranged below. Here, the protrusions CVA may form a bend in the third light-shielding pattern 613.

[0120] The flat portion FA of the first insulating layer 620 may be a part of the first insulating layer 620 excluding the convex portion CVA. A lens 640 may be placed on the flat portion FA of the first insulating layer 620 corresponding to the opening OA. A flat layer 650 can be in contact with the upper part of the first insulating layer 620 where the lens 640 and the second and third light-shielding patterns 630 and 613 are not placed.

[0121] A lens 640 may be provided on the flat portion FA of the first insulating layer 620 that overlaps with the opening OA. The lens 640 may partially overlap the flat portion FA of the first insulating layer 620 with the convex portion CVA outside the flat portion FA.

[0122] The first light-shielding pattern 611 and the second light-shielding pattern 630 may be provided on the protruding portion CVA with a first insulating layer 620 interposed therebetween. Furthermore, the protruding portion CVA may be provided with a third light-shielding pattern 613 covering the second light-shielding pattern 630. The first light-shielding pattern 611 and the third light-shielding pattern 613 may contain the same material or have similar reflectances. However, the first and third light-shielding patterns 611 and 613 and the second light-shielding pattern 630 may be made of different materials. Also, the first and third light-shielding patterns 611 and 613 and the second light-shielding pattern 630 may have different reflectances. In the display device according to the fifth embodiment, the first to third light-shielding patterns 611, 630, and 613 have different first to third widths W1, W2, and W3, and any one of them may be formed to be inclined from the center towards the edge. Specifically, the first and second widths W1 and W2 of the first and second light-shielding patterns 611 and 630, respectively, may be smaller than the third width W3 of the third light-shielding pattern 613. Since the second light-shielding pattern 630 is made of metal, in order to minimize interference between metals, the second light-shielding pattern 630 provided between the lenses 440 may be formed to have the minimum width. Therefore, the second light-shielding pattern 630 may have a smaller width than the first light-shielding pattern 611. In addition, the edges of the third light-shielding pattern 613 may be formed to be inclined.

[0123] The first light-shielding pattern 611 may be provided on the sealing layer 180, excluding a predetermined area corresponding to the opening OA. The first light-shielding pattern 611 may overlap the upper surface 620a of the convex portion CVA between the flat portions FA of the first insulating layer 620. The first light-shielding pattern 611 can expose a third light-shielding pattern 613, which overlaps at least with the side surface 620b of the first insulating layer 620, to the substrate 110 side.

[0124] The second light-shielding pattern 630 may be provided on the protrusions CVA of the first insulating layer 620. That is, the second light-shielding pattern 630 may be provided along the edges of each lens 240. Such a second light-shielding pattern 630 may overlap the upper surface 620a of the protrusions CVA between the flat portions FA of the first insulating layer 620. The first light-shielding pattern 611 can expose a third light-shielding pattern 613, which overlaps at least with the side surface 620b of the first insulating layer 620, to the substrate 110 side.

[0125] The third light-shielding pattern 613 may be provided on the protrusion CVA of the first insulating layer 620. The third light-shielding pattern 613 may be provided on the second light-shielding pattern 630 so as to cover the entire surface of the second light-shielding pattern 630. Such a third light-shielding pattern 613 may be provided along the shape of the upper surface 620a and side surface 620b of the protrusion CVA of the first insulating layer 620. The third light-shielding pattern 613 is divided into a central part that contacts the upper surface 620a of the protrusion CVA of the first insulating layer 620 and an edge part that contacts the side surface 620b, and the edge part of the third light-shielding pattern 613 may be formed to be inclined with respect to the central part according to the shape of the protrusion CVA of the first insulating layer 620. In other words, the edge part of the third light-shielding pattern 613 may form an acute second angle θ2 with respect to the substrate 110. Furthermore, the central part of the third light-shielding pattern 613 that contacts the upper surface 620a of the protrusion CVA of the first insulating layer 620 overlaps with the first light-shielding pattern 611, and the edge that contacts the side surface 620b of the protrusion CVA of the first insulating layer 620 can be exposed from the first light-shielding pattern 611 towards the substrate 110. Therefore, the light from the light-emitting element 170a traveling between the lenses 240 can be incident on the second light-shielding pattern 230 exposed from the first light-shielding pattern 611, and is reflected between the first light-shielding pattern 611 and the second light-shielding pattern 630 by the inclined edge of the third light-shielding pattern 613, or reflected at an acute angle, and re-reflected by the reflective components on the light-emitting element 170a side, thus reducing the amount of light that reaches other lenses.

[0126] Next, Figures 13a to 13d are graphs showing the light intensity of the display device of the present invention at different viewing angles for each of the first to fourth embodiments. Figure 13a shows the light intensity of the display device according to the first embodiment at different viewing angles. Based on Figure 4a, the measurement was taken under the conditions that the line width of the first light-shielding pattern 210 is 5 μm, the line width of the second light-shielding pattern 230 is 11 μm, the edge length of the second light-shielding pattern 230 is 3 μm, and the second angle θ2 is 70°. Figure 13b shows the light intensity of the display device according to the second embodiment at different viewing angles. Based on Figure 6, the measurement was taken under the conditions that the line width of the first light-shielding pattern 310 is 5 μm, the line width of the second light-shielding pattern 330 is 11 μm, the edge length of the second light-shielding pattern 330 is 3 μm, and the second angle θ2 is 70°. Figure 13c shows the light intensity of the display device according to the third embodiment at different viewing angles. Based on Figure 9, the measurements were taken under the conditions that the line width of the first light-shielding pattern 410 is 12.6 μm, the line width of the second light-shielding pattern 430 is 11 μm, the edge length of the first light-shielding pattern 410 is 3 μm, and the second angle θ2 is 70°. Figure 13d shows the light intensity of the display device according to the fourth embodiment at different viewing angles. Based on Figure 10, the measurements were taken under the conditions that the line width of the first light-shielding pattern 510 is 12.6 μm, the line width of the second light-shielding pattern 530 is 11 μm, the edge length of the first light-shielding pattern 510 is 3 μm, and the second angle θ2 is 70°. In each graph, the horizontal axis represents the viewing angle (°), and the vertical axis represents the light intensity (%), with the intensity at a viewing angle of 0° being 100%.

[0127] The following table shows the peak values ​​shown in Figures 13a to 13d. The second peak represents the second largest peak value, and the high-angle peak represents the largest peak value at a viewing angle of 60° or more. In the following table, the conventional structure shows a display device in which the first and second light-shielding patterns are parallel and not tilted, the line width of the first light-shielding pattern is 12.6 μm, and the line width of the second light-shielding pattern is 11 μm, with the two patterns superimposed on each other. [Table 1]

[0128] Referring to Table 1, the first embodiment has the smallest second peak value, while the third and fourth embodiments have the smallest high-angle peak values. Since light intensity is not easily perceptible in the human field of vision when it is approximately 0.1%, it is thought that most of the first to fourth embodiments will have almost no light leakage at the high-angle peak. Therefore, the display device according to the first embodiment has a second peak of 0.11 and a high-angle peak of 0.07, so it is thought that light leakage will occur the least. On the other hand, while the conventional structure has a second peak of 0.61, it can be seen that the display devices according to the first to fourth embodiments of the present invention have a lower second peak than the conventional structure. Therefore, the display device according to the present invention can improve the cut-off effect against the field of view limitation by the lens by forming the edge of either the first light-shielding pattern or the second light-shielding pattern at an angle, and can have the effect of reducing the light leakage phenomenon. In particular, the display device according to the first embodiment of the present invention has a second peak of 0.11, so it can significantly prevent light leakage compared to the conventional structure and can have a significant cut-off effect.

[0129] A display device according to one embodiment of this specification can be described as follows.

[0130] A display device according to one embodiment of the present invention includes a plurality of light-emitting elements located on a substrate, a first insulating layer provided on the plurality of light-emitting elements, a lens provided on the first insulating layer corresponding to each of the plurality of light-emitting elements, a first light-shielding pattern provided between the substrate and the first insulating layer corresponding to each of the spaces between the plurality of light-emitting elements, and a second light-shielding pattern provided on the first insulating layer superimposed on the first light-shielding pattern, wherein the second light-shielding pattern includes a central part and an edge portion around the central part, and the edge portion may be tilted with respect to the central part.

[0131] In a display device according to one embodiment of this specification, the edge portion has a first angle with respect to the center, and the first angle may be 90° or more and less than 180°.

[0132] In a display device according to one embodiment of this specification, the second light-shielding pattern may have a wider width than the first light-shielding pattern.

[0133] In a display device according to one embodiment of this specification, the first light-shielding pattern may overlap with the central part of the second light-shielding pattern.

[0134] In a display device according to one embodiment of this specification, the first insulating layer may include a flat portion superimposed on the light-emitting element and a convex portion formed between the flat portions so as to protrude more than the flat portions.

[0135] In a display device according to one embodiment of this specification, the central part of the second light-shielding pattern may be located on the upper surface of the protrusion, and the edge of the second light-shielding pattern may be located on the side surface of the protrusion.

[0136] In a display device according to one embodiment of this specification, the first insulating layer may include a flat portion superimposed on the light-emitting element and a recess formed between the flat portions such that it is recessed in the direction toward the substrate relative to the flat portions.

[0137] In a display device according to one embodiment of this specification, the central portion of the second light-shielding pattern may be located on the bottom surface of the recess, and the edge portion of the second light-shielding pattern may be located on the side surface of the recess.

[0138] A display device according to one embodiment of this specification may further include a third light-shielding pattern provided on the second light-shielding pattern, the third light-shielding pattern having a lower reflectance than the second light-shielding pattern.

[0139] According to one embodiment of the display device described herein, a fourth light-shielding pattern may be located on the first light-shielding pattern.

[0140] In a display device according to one embodiment of this specification, the lens may include two or more lenses having different shapes.

[0141] According to one embodiment of the display device described herein, the second light-shielding pattern may be superimposed on a portion of the edge of the lens.

[0142] A display device according to one embodiment of the present invention may include a plurality of light-emitting elements located on a substrate, a first insulating layer provided on the plurality of light-emitting elements, a plurality of lenses provided on the first insulating layer corresponding to each of the plurality of light-emitting elements, a first light-shielding pattern provided between the substrate and the first insulating layer corresponding to the spaces between the plurality of light-emitting elements, and a second light-shielding pattern provided on the first insulating layer superimposed on the first light-shielding pattern, wherein the first light-shielding pattern may include a central part and an edge portion around the central part, and the edge portion may be tilted with respect to the central part.

[0143] According to one embodiment of the display device described herein, the first light-shielding pattern may have a wider width than the second light-shielding pattern.

[0144] According to one embodiment of the display device described herein, the second light-shielding pattern may be superimposed on the central part of the first light-shielding pattern.

[0145] In one embodiment of the display device described herein, a second insulating layer may be located between the first light-shielding pattern and the substrate.

[0146] A display device according to one embodiment of the present invention may include: a plurality of light-emitting elements located on a substrate; a first insulating layer provided on the plurality of light-emitting elements; a plurality of lenses located on the first insulating layer and corresponding to each of the plurality of light-emitting elements; a first light-shielding pattern corresponding to a region located between the plurality of light-emitting elements between the substrate and the first insulating layer; a second light-shielding pattern superimposed on the first light-shielding layer with the first light-shielding pattern; and a third light-shielding pattern covering the second light-shielding pattern on the first insulating layer, wherein the third light-shielding pattern may include a central part and an edge portion around the central part, and the edge portion may be tilted with respect to the central part.

[0147] According to one embodiment of the display device described herein, the width of the first light-shielding pattern and the width of the second light-shielding pattern may be smaller than the width of the third light-shielding pattern, and the width of the second light-shielding pattern may be smaller than the width of the first light-shielding pattern.

[0148] According to one embodiment of the display device described herein, the first light-shielding pattern and the second light-shielding pattern may overlap with the central part of the third light-shielding pattern.

[0149] This specification, as described above, is not limited to the embodiments and accompanying drawings, and it will be apparent to those ordinary skill in the art to which this specification belongs that various substitutions, modifications, and alterations are possible without departing from the technical matters of this specification. Accordingly, the scope of this specification is determined by the claims set forth below, and all forms of modification or alteration derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included within the scope of this specification. [Explanation of Symbols]

[0150] OA1 First opening OA2 2nd opening OA opening NOA non-opening CVA protrusion FA flat area W1 1st width W2, 2nd width θ1 1st angle θ2 2nd angle 110 circuit boards 100 light-emitting arrays 170a Light-emitting element 180 sealing layer 210 First light-blocking pattern 220 First insulating layer 220a top side 220b side 230 Second light-blocking pattern 240 lenses 250 flat layer

Claims

1. Multiple light-emitting elements located on a substrate, A first insulating layer provided on the plurality of light-emitting elements, A plurality of lenses are provided on the first insulating layer, each corresponding to one of the plurality of light-emitting elements, A first light-shielding pattern is provided between the substrate and the first insulating layer, corresponding to each of the plurality of light-emitting elements, A second light-shielding pattern is provided on the first insulating layer superimposed on the first light-shielding pattern, Includes, In a cross-sectional view, the second light-shielding pattern is A central part located between the aforementioned multiple lenses and not overlapping with the aforementioned multiple lenses, A periphery located around the central part and at least partially overlapping with the plurality of lenses, Includes, In a cross-sectional view, the edge is inclined with respect to the central part. In a cross-sectional view, the first insulating layer has an inclined surface that overlaps with the edge of the second light-shielding pattern. Display device.

2. The display device according to claim 1, wherein the edge portion has a first angle with respect to the central portion, and the first angle is 90° or more and less than 180°.

3. The display device according to claim 1, wherein, in a cross-sectional view, the second light-shielding pattern located between the plurality of lenses has a wider width than the first light-shielding pattern located between the plurality of lenses.

4. The display device according to claim 3, wherein the first light-shielding pattern overlaps with the central part of the second light-shielding pattern.

5. The first insulating layer is A flat portion superimposed on the light-emitting element, A convex portion formed between the flat portions so as to protrude more than the flat portion, Includes, The inclined surface of the first insulating layer is located at the convex portion, The display device according to claim 3.

6. The display device according to claim 5, wherein the central part of the second light-shielding pattern is located on the upper surface of the protrusion, the edge of the second light-shielding pattern is located on the side surface of the protrusion, and the side surface of the protrusion corresponds to the inclined surface.

7. The first insulating layer is A flat portion superimposed on the light-emitting element, It includes a recess formed between the flat portions so as to be recessed in the direction of the substrate relative to the flat portion, The inclined surface of the first insulating layer is located in the recess, The display device according to claim 3.

8. The display device according to claim 7, wherein the central part of the second light-shielding pattern is located on the bottom surface of the recess, the edge of the second light-shielding pattern is located on the side surface of the recess, and the side surface of the recess corresponds to the inclined surface.

9. The display device according to claim 1, further comprising a third light-shielding pattern provided on the second light-shielding pattern.

10. The display device according to claim 9, wherein the third light-shielding pattern has a lower reflectance than the second light-shielding pattern.

11. The display device according to claim 9, further comprising a fourth light-shielding pattern located on the first light-shielding pattern.

12. The display device according to claim 1, wherein the plurality of lenses include two or more lenses having different shapes.

13. The display device according to claim 1, wherein the second light-shielding pattern overlaps with a portion of the end of the lens.

14. Multiple light-emitting elements located on a substrate, A first insulating layer provided on the plurality of light-emitting elements, A plurality of lenses are provided on the first insulating layer corresponding to each of the plurality of light-emitting elements, A first light-shielding pattern is provided between the substrate and the first insulating layer, corresponding to the intervals between the plurality of light-emitting elements, A second light-shielding pattern is provided on the first insulating layer so as to overlap with the first light-shielding pattern, Includes, In a cross-sectional view, the first light-shielding pattern is A central part located between the aforementioned multiple lenses and not overlapping with the aforementioned multiple lenses, A periphery located around the central part and at least partially overlapping with the plurality of lenses, Includes, In a cross-sectional view, the edge is inclined with respect to the central part. Display device.

15. The display device according to claim 14, wherein the first light-shielding pattern has a wider width than the second light-shielding pattern.

16. The display device according to claim 15, wherein the second light-shielding pattern overlaps with the central part of the first light-shielding pattern.

17. The display device according to claim 15, further comprising a second insulating layer between the first light-shielding pattern and the substrate.

18. Multiple light-emitting elements located on a substrate, A first insulating layer provided on the plurality of light-emitting elements, A plurality of lenses located on the first insulating layer, each corresponding to one of the plurality of light-emitting elements, A first light-shielding pattern located between the substrate and the first insulating layer, and corresponding to a region located between the plurality of light-emitting elements, A second light-shielding pattern located on the first insulating layer and superimposed on the first light-shielding pattern, A third light-shielding pattern located on the first insulating layer and covering the second light-shielding pattern, Includes, In a cross-sectional view, the third light-shielding pattern is A central part located between the aforementioned multiple lenses and not overlapping with the aforementioned multiple lenses, A periphery located around the central part and at least partially overlapping with the plurality of lenses, Includes, In a cross-sectional view, the edge is inclined with respect to the central part. Display device.

19. The display device according to claim 18, wherein the width of the first light-shielding pattern and the width of the second light-shielding pattern are smaller than the width of the third light-shielding pattern, and the width of the second light-shielding pattern is smaller than the width of the first light-shielding pattern.

20. The display device according to claim 19, wherein the first light-shielding pattern and the second light-shielding pattern overlap with the central part of the third light-shielding pattern.

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