Indication device

Abstract

To provide a display device that prevents brightness reduction due to viewing angle and improves light efficiency. [Solution] A display device according to one aspect of this specification includes a substrate, a light-emitting element disposed on the substrate and having an inclined surface, a first electrode, a light-emitting layer and a second electrode, a bank disposed on the first electrode and exposing the inclined surface to define a light-emitting region, a black matrix disposed on the bank and including a first aperture superimposed on the light-emitting region, a barrier layer disposed on the black matrix and including a second aperture superimposed on the first aperture, and an optical member disposed on the second aperture.

Description

Technical Field

[0001] The present specification relates to a display device, and more particularly, to a display device capable of realizing a dual display.

Background Art

[0002] As technology in modern society develops, display devices are widely used in various ways to provide information to users. Display devices include not only electronic signboards that simply transmit visual information in one direction, but also various electronic devices that require higher technology, such as devices that confirm user inputs and provide information in response to the confirmed inputs.

[0003] For example, the display device may be mounted on a vehicle to provide different information to the driver and the passenger of the vehicle.

[0004] The background art is not regarded as prior art. The background art may include information for describing one or more components among the components of the present specification.

Summary of the Invention

Problems to be Solved by the Invention

[0005] A problem to be solved by the present specification is to provide a display device that prevents luminance reduction caused by viewing angles and has improved light efficiency.

[0006] Another problem to be solved by the present specification is to provide a display device that allows a user to view an optimal image at each viewing angle position when viewing images at different viewing angles.

[0007] The problems of the present specification are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Means for Solving the Problems

[0008] A display device according to one embodiment of this specification includes a substrate, a light-emitting element disposed on the substrate and having an inclined surface, a light-emitting layer and a second electrode, a bank disposed on the first electrode and exposing the inclined surface to define the light-emitting region of the light-emitting element, a black matrix disposed on the bank and including a first aperture superimposed on the light-emitting region, a barrier layer disposed on the black matrix and including a second aperture superimposed on the first aperture, and an optical member disposed on the second aperture.

[0009] A display device according to another embodiment of this specification includes a substrate, a plurality of light-emitting elements disposed on the substrate and including light-emitting regions made of inclined surfaces, a black matrix disposed on the plurality of light-emitting elements and including a plurality of first apertures corresponding to the light-emitting regions of the plurality of light-emitting elements, a barrier layer disposed on the black matrix and including a plurality of second apertures that overlap at least a portion of the plurality of first apertures, and a plurality of optical members disposed on the plurality of second apertures, wherein the plurality of light-emitting elements include a first group of light-emitting elements whose inclined surfaces are tilted in a second direction, and a second group of light-emitting elements whose inclined surfaces are tilted in a first direction different from the second direction.

[0010] Specific details of other embodiments are included in the detailed description and drawings. [Effects of the Invention]

[0011] According to the invention described herein, it is possible to prevent or reduce the decrease in brightness that may occur due to a change in the viewing angle.

[0012] According to the invention described herein, the optical efficiency at the intended viewing angle can be improved.

[0013] The display device according to the invention described herein can display images at different viewing angles, and in this case, the light efficiency can be improved at each of the different viewing angles.

[0014] According to the invention described herein, the light efficiency is improved, allowing the display device to be driven with lower power consumption.

[0015] The effects described herein are not limited to those described above, and a wider range of effects are included within the present invention. [Brief explanation of the drawing]

[0016] [Figure 1] This is an illustrative diagram of a display device according to one embodiment of this specification. [Figure 2] This is a functional block diagram of a display device according to one embodiment of this specification. [Figure 3] This is an enlarged plan view showing the arrangement of a display device according to one embodiment of this specification. [Figure 4] Figure 3 is a cross-sectional view of the display device taken along the line A-A'. [Figure 5] Figure 3 is a cross-sectional view of the display device taken along the line B-B'. [Figure 6] This is a cross-sectional view of a display device according to another embodiment of this specification. [Figure 7] This is a cross-sectional view of a display device according to another embodiment of this specification. [Figure 8] This is the result of a simulation comparing the change in brightness with respect to viewing angle in the comparative examples and examples described herein. [Modes for carrying out the invention]

[0017] The embodiments of this specification that may be shown in the drawings will be described in detail below. Where it is determined that a known function or configuration related to this specification would unnecessarily obscure the gist of the invention, a detailed description thereof will be omitted below. The process steps and / or sequence of steps are merely illustrative and, except for sequences and / or steps that must be performed in a particular order, are not limited to the order described herein and may be changed as has become known in the art. The same reference numerals in the drawings refer to the same elements in the overall drawings. The names of each component used below are selected only for the convenience of preparing the specification and may differ from the names actually used in the product.

[0018] The advantages and features of the present specification, as well as methods for achieving the same, will become clear by referring to the embodiments described in detail later in conjunction with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, may be embodied in various different forms, and these embodiments are merely provided so that the disclosure of the present specification will be complete, and to fully convey the scope of the invention to those of ordinary skill in the art to which the present specification pertains. No component referred to as an "embodiment" in the present specification shall be construed as being preferred or advantageous over other components.

[0019] The shapes, areas, ratios, angles, numbers, and the like disclosed in the drawings for explaining the embodiments of the present specification are merely illustrative, and the present specification is not limited to the illustrated matters. Throughout the entire specification, the same reference numerals refer to the same components. Further, in describing the present specification, when it is determined that a specific description of related known techniques may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When terms such as "comprising", "having", and "formed" are used in the present specification, other parts may be added as long as "only" is not used. Components described in the singular form may be interpreted as also including a plurality of components unless the context clearly expresses otherwise, and the converse may also be interpreted in the same manner.

[0020] In interpreting the components, they are construed to include a tolerance range even without separate explicit description.

[0021] In the case of a description of a positional relationship, for example, when the positional relationship between two parts is described as "on", "at the upper part of", "at the lower part of", "adjacent to" or the like, one or more other parts may be positioned between the two parts as long as "immediately" or "directly" is not used.

[0022] Where an element or layer is referred to as being "on" another element or layer, this includes both cases where it is directly on the other element and cases where another layer or other element is interposed therebetween.

[0023] Furthermore, while terms such as 1st, 2nd, A, B, (a), (b), etc., are used to describe various components, these components are not limited by these terms. These terms are simply used to distinguish one component from another. Therefore, the 1st component referred to below may also be the 2nd component within the technical concept of this specification.

[0024] Throughout the specification, the same reference numeral refers to the same component.

[0025] The term "at least one" can be interpreted to include all combinations of one or more of the listed components. For example, the expression "at least one of the first, second, and third components" can include all combinations of all three components, any combination of any two of the three components, and all individual components.

[0026] The area and thickness of each component shown in the drawings are provided for illustrative purposes only, and this specification is not necessarily limited to the area and thickness of the components shown.

[0027] The features of each of the various embodiments described herein can be combined or linked together, either partially or entirely, allowing for a variety of technically diverse interoperability and drive, and each embodiment may be implemented independently of the others or together in relation to one another.

[0028] Unless otherwise defined herein, all terms used (including all technical and scientific terms) have the same meaning as that generally understood by an ordinary person of the art in which the embodiment pertains. Furthermore, terms defined in commonly used dictionaries should be interpreted in accordance with their meaning in the context of the relevant art, and should not be interpreted in an ideal or overly formal sense unless explicitly defined herein. For example, the term “part” may apply to a separate circuit or structure, an integrated circuit, a computing block of a circuit device, or any structure configured to perform a specific function as understood by an ordinary person of the art.

[0029] In the following, various embodiments of this specification will be described with reference to the drawings. Furthermore, all components of each display device in all embodiments of this specification are operably coupled and configured.

[0030] Figure 1 is an illustrative diagram of a display device according to one embodiment of this specification.

[0031] Referring to Figure 1, the display device 100 may, but is not limited to, be located on at least a portion of the vehicle's dashboard. For example, the display device 100 may be located at any other location in an electronic device not limited to a vehicle. The vehicle's dashboard may be located in front of the front seats of the vehicle (e.g., driver's seat, passenger seat). For example, the vehicle's dashboard may contain input configurations for operating various functions inside the vehicle (e.g., air conditioning, audio system, navigation system).

[0032] The display device 100 is positioned on the vehicle's dashboard and can function as an input unit for operating at least some of the vehicle's various functions. The display device 100 can provide various information related to the vehicle, such as vehicle operation information (e.g., current vehicle speed, remaining fuel amount, mileage, remaining battery capacity), information on vehicle components (e.g., tire wear), etc.

[0033] The display device 100 may be positioned to cross the driver's seat and the passenger seat located in the front of the vehicle. Users of the display device 100 may include the driver of the vehicle and passengers in the passenger seat. Both the driver and passengers of the vehicle can use the display device 100.

[0034] Figure 1 may show only a part of the display device 100. The display device 100 shown in Figure 1 may show the display panel, one of the various components included in the display device 100. Specifically, the display device 100 shown in Figure 1 may show at least a portion of the display area and non-display area of ​​the display panel. Components of the display device 100 other than those shown in Figure 1 may be implemented inside (or at least partially inside) the vehicle.

[0035] Figure 2 is a functional block diagram of a display device according to one embodiment of this specification.

[0036] As one embodiment of this specification, the display device 100 may be, for example, an electroluminescent display, but is not limited thereto, and various other types of display devices such as LCD displays and plasma displays may also be used. The electroluminescent display device may be an organic light-emitting diode display device, a quantum-dot light-emitting diode display device, or an inorganic light-emitting diode display device.

[0037] Referring to Figure 2, the display device 100 can include a display panel PN, a data drive circuit DD, a gate drive circuit GD, and a timing controller TD.

[0038] The display panel PN can generate an image to be presented to the user. For example, the display panel PN can generate and display an image presented to the user through multiple pixels PX, each of which has a pixel circuit.

[0039] The data drive circuit DD, gate drive circuit GD, and timing controller TD can provide signals for the operation of each pixel PX through signal wiring. For example, the signal wiring for providing signals for the operation of each pixel PX may include multiple data wiring DL and multiple gate wiring GL.

[0040] Multiple data routes DL may be arranged in a column direction and include multiple routes connected to pixels PX arranged in one column direction, and multiple gate routes GL may be arranged in a row direction and include multiple routes connected to pixels PX arranged in one row direction.

[0041] For example, the data drive circuit DD can apply a data signal to each pixel PX through multiple data wiring DL, the gate drive circuit GD can apply a gate signal to each pixel PX through multiple gate wiring GL, and the power supply unit can supply a power voltage to each pixel PX through power supply wiring.

[0042] The timing controller TD can control the data drive circuit DD and the gate drive circuit GD. For example, the timing controller TD can realign externally input digital video data to match the resolution of the display panel PN and supply it to the data drive circuit DD.

[0043] The data drive circuit DD can convert digital video data input from the timing controller TD into analog data voltages based on data control signals and supply them to multiple data lines DL.

[0044] A gate drive circuit GD can generate gate signals, such as scan signals, and light emission signals based on gate control signals. For example, a gate drive circuit GD may include a scan drive unit and a light emission signal drive unit. The scan drive unit can generate and supply scan signals to scan wiring in a row-by-row manner to drive at least one scan wiring connected for each row of pixels. The light emission signal drive unit can generate and supply light emission signals to light emission wiring in a row-by-row manner to drive at least one light emission signal wiring connected for each row of pixels.

[0045] Figure 3 is an enlarged plan view showing the arrangement of a display device according to one embodiment of this specification. Figure 4 is a cross-sectional view of the display device in Figure 3 taken along the line A-A'. Figure 5 is a cross-sectional view of the display device in Figure 3 taken along the line B-B'.

[0046] Figure 3 shows the plane of a pixel PX when the pixel PX includes three subpixels, for example, a first subpixel RSP, a second subpixel GSP, and a third subpixel BSP, but the present invention is not limited thereto. For example, a pixel PX may further include four or more subpixels, which can be arranged in a variety of configurations.

[0047] Furthermore, Figure 4 shows an embodiment of the display device 100 cut along the line A-A' in Figure 3, showing the pixels on which the first group of light-emitting elements G1 are located, and Figure 5 shows an embodiment of the display device 100 cut along the line B-B' in Figure 3, showing the pixels on which the second group of light-emitting elements G2 are located.

[0048] Referring to Figure 3, a pixel PX may include multiple subpixels SP that exhibit different colors from each other. For example, a pixel PX may include a first subpixel RSP that embodies red, a second subpixel GSP that embodies green, and a third subpixel BSP that embodies blue. In some embodiments, the first subpixel RSP may be referred to as a red subpixel, the second subpixel GSP as a green subpixel, and the third subpixel BSP as a blue subpixel.

[0049] The display device 100 can be implemented as a dual-view display that shows different images depending on the viewing angle. For example, if the display device 100 is included in a vehicle, the display device can show different images to the driver sitting in the driver's seat and the passenger sitting in the front passenger seat, but the present invention is not limited thereto. Furthermore, although the display device 100 will be described below as a dual-view display, it may be implemented to show three or more images depending on the viewing angle. In this case, the display device 100 may be a multi-view display.

[0050] By displaying different images depending on the viewing angle, each of the multiple subpixels SP can include multiple light-emitting elements that provide different viewing angles.

[0051] For example, the first sub-pixel RSP may include a first group of light-emitting elements G1 in which the first light-emitting region RE1 is superimposed on the first optical element 191, and the center of the first light-emitting region RE1 is shifted in a first direction D1 with respect to the center of the first optical element 191. Furthermore, the first sub-pixel RSP may include a second group of light-emitting elements G2 in which the second light-emitting region RE2 is superimposed on the second optical element 192, and the center of the second light-emitting region RE2 is shifted in a second direction D2 with respect to the center of the second optical element 192.

[0052] Similarly, the second subpixel GSP may include a first group of light-emitting elements G1 in which the center of the first light-emitting region GE1 is shifted in a first direction D1 with respect to the center of the first optical member 191, and a second group of light-emitting elements G2 in which the center of the second light-emitting region GE2 is shifted in a second direction D2 with respect to the center of the second optical member 192.

[0053] The third subpixel BSP may include a first group of light-emitting elements G1 in which the center of the first light-emitting region BE1 is shifted in a first direction D1 with respect to the center of the first optical element 191, and a second group of light-emitting elements G2 in which the center of the second light-emitting region BE2 is shifted in a second direction D2 with respect to the center of the second optical element 192.

[0054] In this case, the first direction D1 and the second direction D2 may be opposite directions. For example, the first direction D1 may be to the right with respect to Figure 3, for example, towards the passenger seat of the vehicle. The second direction D2 may be to the left with respect to Figure 3, for example, towards the driver's seat of the vehicle, but the present invention is not limited to these.

[0055] The first group of light-emitting elements G1 can provide an image at a viewing angle in a second direction D2. For example, the first group of light-emitting elements G1 can emit light toward the second direction D2. When the first group of light-emitting elements G1 are driven, the image can be viewed by a viewer located in the second direction D2, for example, a driver sitting in the driver's seat of a vehicle.

[0056] Furthermore, the second group of light-emitting elements G2 can provide an image at a viewing angle in the first direction D1. For example, the second group of light-emitting elements G2 can emit light toward the first direction D1. When the second group of light-emitting elements G2 is activated, the image can be viewed by a viewer located in the first direction D1, for example, a passenger sitting in the front passenger seat of a vehicle.

[0057] The light-emitting elements G1 of the first group and G2 of the second group may be arranged in different rows on a plane. The light-emitting elements G1 of the first group and G2 of the second group may be arranged alternately in a third direction D3 on the plane. Taking Figure 3 as an example, the first row may contain the light-emitting elements G1 of the first group, and the second row may contain the light-emitting elements G2 of the second group. The third row may also contain the light-emitting elements G1 of the first group, and the fourth row may contain the light-emitting elements G2 of the second group, but the present invention is not limited thereto.

[0058] In this case, the third direction D3 is a direction that intersects the first direction D1 and the second direction D2, and may be, for example, a direction perpendicular to the first direction D1 and the second direction D2. For example, the first direction D1 and the second direction D2 may be lateral directions on a plane, and the third direction D3 may be vertical directions, but the present invention is not limited thereto.

[0059] In each of the multiple subpixels SP, the first optical element 191 superimposed on the first light-emitting region RE1 and the second optical element 192 superimposed on the second light-emitting region RE2 may be positioned diagonally to each other with respect to the third direction D3. That is, the first optical element 191 and the second optical element 192 may be arranged in a zigzag pattern in the third direction D3.

[0060] In the following description, with reference to both Figures 3 and 4, the region in which the first group of light-emitting elements G1 of the first subpixel RSP is arranged in the display device 100 according to one embodiment of this specification will be explained. However, the region in which the first group of light-emitting elements G1 is arranged in the second subpixel GSP and the third subpixel BSP can also be represented identically to the region in which the first group of light-emitting elements is arranged in the first subpixel RSP.

[0061] Referring to both Figures 3 and 4, the display device 100 according to one embodiment of this specification may include a substrate 110, a first buffer layer 111a, a light-shielding layer 120, a second buffer layer 111b, a transistor 130, a first planarization layer 115, a first protrusion 116a, a plurality of light-emitting elements 160, a sealing portion 170, a touch buffer layer 181, a conductive pattern 182, a first touch insulating layer 183, a black matrix 184, a second touch insulating layer 185, a barrier layer 186, a third touch insulating layer 187, a first optical member 191, and a protective film 119.

[0062] The substrate 110 may contain an insulating material. The substrate 110 may contain a transparent material. For example, the substrate 110 may be glass, plastic, or a flexible polymer film. For example, the flexible polymer film may consist of any one of polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetylcellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), but the present invention is not limited thereto.

[0063] A first buffer layer 111a may be placed on the substrate 110. The first buffer layer 111a can reduce the penetration of moisture or impurities through the substrate 110. The first buffer layer 111a may contain inorganic insulating materials such as silicon oxide (SiOx) and silicon nitride (SiNx). The first buffer layer 111a may have a multilayer structure. For example, the first buffer layer 111a may have a laminated structure of a film made of silicon nitride (SiNx) and a film made of silicon oxide (SiOx).

[0064] A light-shielding layer 120 may be placed on the first buffer layer 111a. The light-shielding layer 120 may be placed so as to overlap at least the active layer 131 of the transistor 130. The light-shielding layer 120 can block light incident on the active layer 131. In the drawing, the light-shielding layer 120 is shown as a single layer, but the light-shielding layer 120 may be formed in multiple layers. The light-shielding layer 120 may be formed from a variety of conductive materials, such as magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), gold (Au), or alloys thereof.

[0065] A second buffer layer 111b may be placed on the light-shielding layer 120. The second buffer layer 111b can protect the transistor 130 from impurities such as alkali ions flowing out from the substrate 110. In addition, the second buffer layer 111b can improve the adhesion between the layer formed on top of the second buffer layer 111b and the substrate 110. Furthermore, the second buffer layer 111b may include inorganic insulating materials such as silicon oxide (SiOx) and silicon nitride (SiNx). The second buffer layer 111b may have a multilayer structure. For example, the second buffer layer 111b may have a laminated structure of a film made of silicon nitride (SiNx) and a film made of silicon oxide (SiOx).

[0066] A transistor 130 may be placed on the second buffer layer 111b. The transistor 130 may include an active layer 131, a gate electrode 132, a source electrode 133, and a drain electrode 134. The source electrode 133 and drain electrode 134 of the transistor 130 are not fixed but can be swapped with each other depending on the type of transistor 130 and the voltage difference applied between the source electrode 133 and the drain electrode 134. Therefore, in this specification, the source electrode 133 and the drain electrode 134 may also be referred to as the first electrode and the second electrode, respectively.

[0067] First, an active layer 131 may be placed on the second buffer layer 111b. The active layer 131 may be formed from an oxide semiconductor material or polycrystalline silicon, but the present invention is not limited thereto.

[0068] A gate insulating layer 112 made of an insulating material may be placed on the active layer 131. The gate insulating layer 112 may include an insulating material. For example, the gate insulating layer 112 may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0069] A gate electrode 132 may be placed on the gate insulating layer 112. The gate electrode 132 may be placed on the active layer 131 so as to overlap with the active layer 131. The gate electrode 132 may be formed from a variety of conductive materials, such as magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), gold (Au), or alloys thereof.

[0070] A first interlayer insulating layer 113 and a second interlayer insulating layer 114 may be disposed on the gate electrode 132. Figure 4 shows that the upper surfaces of the first interlayer insulating layer 113 and the second interlayer insulating layer 114 are formed flat, but the shape of the first interlayer insulating layer 113 and the second interlayer insulating layer 114 is not limited to this in the present invention. For example, the first interlayer insulating layer 113 and the second interlayer insulating layer 114 may each be formed along the surface of a lower configuration. Therefore, the upper surfaces of the first interlayer insulating layer 113 and the second interlayer insulating layer 114 may include steps formed by the difference in height of the lower configuration. The first interlayer insulating layer 113 and the second interlayer insulating layer 114 may each contain insulating materials. For example, the first interlayer insulating layer 113 and the second interlayer insulating layer 114 may contain inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN).

[0071] A source electrode 133 and a drain electrode 134 may be placed on the second interlayer insulating layer 114. The source electrode 133 and the drain electrode 134 may be connected to the active layer 131 through contact holes formed in the gate insulating layer 112, the first interlayer insulating layer 113, and the second interlayer insulating layer 114, respectively. For example, the source electrode 133 may be connected to the source region of the active layer 131. The drain electrode 134 may be connected to the drain region of the active layer 131.

[0072] On the other hand, a storage capacitor 140 may be further arranged on the substrate 110. The storage capacitor 140 may include a first capacitor electrode 141, a second capacitor electrode 142, a first metal layer 143, and a second metal layer 144.

[0073] A first capacitor electrode 141 may be placed between the gate insulating layer 112 and the first interlayer insulating layer 113. The first capacitor electrode 141 may be placed on the same layer as the gate electrode 132. The first capacitor electrode 141 may also be made of the same material as the gate electrode 132. Furthermore, the first capacitor electrode 141 may be formed in the same process as the gate electrode 132, but the present invention is not limited thereto.

[0074] A second capacitor electrode 142 may be placed between the first interlayer insulating layer 113 and the second interlayer insulating layer 114. The second capacitor electrode 142 may be placed on the first capacitor electrode 141, superimposed on the first capacitor electrode 141. The second capacitor electrode 142 may be formed from a variety of conductive materials, such as magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), gold (Au), or alloys thereof.

[0075] A first metal layer 143 and a second metal layer 144 may be further arranged on the second interlayer insulating layer 114. The first metal layer 143 and the second metal layer 144 may be arranged on the same layer as the source electrode 133 and the drain electrode 134. The first metal layer 143 and the second metal layer 144 may be formed using the same material as the source electrode 133 and the drain electrode 134. Furthermore, the first metal layer 143 and the second metal layer 144 may be formed using the same process as the source electrode 133 and the drain electrode 134.

[0076] The first metal layer 143 can be connected to the first capacitor electrode 141 through contact holes formed in the first interlayer insulating layer 113 and the second interlayer insulating layer 114. The second metal layer 144 can also be connected to the second capacitor electrode 142 through contact holes formed in the second interlayer insulating layer 114. The structure of the transistor 130 and storage capacitor 140 is not limited to the structure shown in Figure 3 and can be modified in various ways as needed. For example, the second interlayer insulating layer 114 may be omitted, in which case not only the second capacitor electrode 142 and the first metal layer 143, but also the source electrode 133 and drain electrode 134 may be formed on the same layer (first interlayer insulating layer 113).

[0077] On the other hand, a contact electrode 150 may be further disposed between the gate insulating layer 112 and the first interlayer insulating layer 113. The contact electrode 150 may be disposed on the same layer as the gate electrode 132. The contact electrode 150 may also be formed from the same material as the gate electrode 132. The contact electrode 150 may be formed in the same process as the gate electrode 132, but the present invention is not limited thereto.

[0078] The contact electrode 150 can come into contact with the light-shielding layer 120 through contact holes formed in the gate insulating layer 112 and the second buffer layer 111b. The contact electrode 150 can also come into contact with the source electrode 133. Therefore, the source electrode 133 can be electrically connected to the light-shielding layer 120 through the contact electrode 150.

[0079] A first planarization layer 115 may be placed on the transistor 130 and the storage capacitor 140. The first planarization layer 115 may be positioned to cover the configuration located below. The first planarization layer 115 may include an organic insulating material. For example, the first planarization layer 115 may consist of a polyimide, acrylic, or benzocyclobutene (BCB) resin, but the present invention is not limited thereto.

[0080] A first protrusion 116a may be arranged on the first planarization layer 115. The first protrusion 116a may include at least one inclined surface whose height decreases as it moves in the direction opposite to the direction in which the center of the first light-emitting region RE1 is shifted with respect to the center of the first optical member 191. For example, in the region where the first group of light-emitting elements G1 are arranged, the center of the first light-emitting region RE1 may be shifted in a first direction D1 with respect to the center of the first optical member 191, and in this case, at least one inclined surface of the first protrusion 116a may decrease in height as it moves towards a second direction D2. That is, the height of at least one inclined surface of the first protrusion 116a may increase toward the first direction D1. Hereinafter, if the height of a surface decreases toward a particular direction, that surface will be defined as inclined toward that particular direction.

[0081] The first projection 116a may further include other inclined surfaces inclined in the first direction D1, but the present invention is not limited thereto. For example, referring to Figure 4, the first projection 116a is shown to include one inclined surface inclined in the second direction D2 and another inclined surface inclined in the first direction D1, but the present invention is not limited thereto. To give another example, the first projection 116a may not include an inclined surface inclined in the first direction D1.

[0082] Furthermore, as shown in Figure 4, the inclination of one inclined surface tilted in the second direction D2 and the inclined surface tilted in the first direction D1 of the first projection 116a are different, but the present invention is not limited thereto. For example, the inclination of one inclined surface tilted in the second direction D2 and the inclined surface tilted in the first direction D1 of the first projection 116a may be the same. The first projection 116a may be formed symmetrically, but the present invention is not limited thereto.

[0083] The first protrusion 116a may be made of polyimide, acrylic, or benzocyclobutene (BCB) resin, but the present invention is not limited thereto. Furthermore, the first protrusion 116a may be made of the same material as the first planarization layer 115, but the present invention is not limited thereto. Referring to Figure 4, an interface is shown between the first protrusion 116a and the first planarization layer 115, but if the first protrusion 116a is made of the same material as the first planarization layer 115, an interface between the first protrusion 116a and the first planarization layer 115 is not required. For example, the first protrusion 116a and the first planarization layer 115 may be formed integrally, but the present invention is not limited thereto.

[0084] A light-emitting element 160 is arranged on the first planarization layer 115 and the first protrusion 116a. The light-emitting element 160 may include a first electrode 161, a light-emitting layer 162, and a second electrode 163.

[0085] First, a first electrode 161 may be placed on the first planarization layer 115 and the first protrusion 116a. The first electrode 161 may include a conductive material. The first electrode 161 may include a material having high reflectivity. For example, the first electrode 161 may include metals such as aluminum (Al) and silver (Ag). The first electrode 161 may have a multilayer structure. For example, the first electrode 161 may have a structure in which a reflective electrode made of metal is positioned between transparent electrodes made of transparent conductive materials such as indium tin oxide (ITO) and indium zinc oxide (IZO), but the present invention is not limited thereto.

[0086] The first electrode 161 can be connected to the source electrode 133 or the drain electrode 134 through a contact hole formed in the first planarization layer 115. Referring to Figure 4, the first electrode 161 is shown to be connected to the drain electrode 134, but the present invention is not limited thereto. The first electrode 161 can also be electrically connected to the active layer 131 of the transistor 130 through the source electrode 133 or the drain electrode 134.

[0087] The first electrode 161 includes an inclined surface. The height of the inclined surface of the first electrode 161 may decrease as it moves in the direction opposite to the direction in which the center of the first light-emitting region RE1 is shifted relative to the center of the first optical member 191. For example, the first electrode 161 can be positioned on an inclined surface of the first projection 116a that is inclined in the second direction D2, thereby forming an inclined surface inclined in the second direction D2, but the present invention is not limited thereto. For example, the first electrode 161 may be formed on the first projection 116a with a uniform thickness along the surface of the lower structure. That is, the inclined surface of the first electrode 161 and the inclined surface of the first projection 116a may correspond to each other and have the same shape or the same inclination angle.

[0088] The inclination angle of the inclined surface of the first electrode 161, which is tilted in the second direction D2, can be varied depending on the viewer's field of view and is not limited to a specific inclination angle.

[0089] A light-emitting layer 162 is placed on the first electrode 161. The light-emitting layer 162 can generate light with a brightness corresponding to the voltage difference between the first electrode 161 and the second electrode 163. For example, the light-emitting layer 162 may include an Emission Material Layer (EML) containing a light-emitting material. The light-emitting material may be an organic material, an inorganic material, or a hybrid material.

[0090] The light-emitting layer 162 may have a multilayer structure. For example, the light-emitting layer 162 may further include at least one of the following: a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL).

[0091] The second electrode 163 may contain a conductive material. The transmittance of the second electrode 163 may be higher than that of the first electrode 161. For example, the second electrode 163 may be formed from a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or from a metal alloy such as MgAg or ytterbium (Yb) alloy. This allows light generated by the light-emitting layer 162 to be emitted through the second electrode 163.

[0092] A bank 117 is positioned on the first electrode 161, exposing the inclined surface of the first electrode 161 that is tilted in the second direction D2. The bank 117 may be positioned to cover the area of ​​the first electrode 161 other than the inclined surface tilted in the second direction D2. The light-emitting layer 162 and the second electrode 163 may be positioned to cover the inclined surface tilted in the second direction D2 that is exposed by the bank 117. In this case, the light-emitting layer 162 and the second electrode 163 may each extend from the inclined surface tilted in the second direction D2 to the top surface of the bank 117. In this way, the first light-emitting region RE1 can be defined by the contact of the first electrode 161, the light-emitting layer 162 and the second electrode 163 with each other on the inclined surface tilted in the second direction D2 that is exposed by the bank 117.

[0093] On the other hand, the first electrode 161 and the light-emitting layer 162 can be separated from each other between adjacent subpixels SP. For example, the first electrode 161 can be separated from the first subpixel RSP and the adjacent second subpixel GSP. The separated first electrode 161 between the first subpixel RSP and the adjacent second subpixel GSP can be insulated by the bank 117. Also, the first electrode 161 can be separated from the second subpixel GSP and the adjacent third subpixel BSP, and the separated first electrode 161 can be insulated by the bank 117.

[0094] Referring to Figure 4, the bank 117 located at one end of the first light-emitting region RE1 in the second direction D2 is formed such that its upper surface is higher than the upper surface of the bank 117 located at the other end in the first direction D1, thereby preventing the light emitted from the first light-emitting region RE1 from being blocked by the bank 117 located at the other end of the first light-emitting region RE1. The height of the upper surface of the bank 117 located at one end of the first light-emitting region RE1 and the height of the upper surface of the bank 117 located at the other end are shown to be different, but the present invention is not limited thereto. The height of the upper surfaces of all banks 117 may be the same.

[0095] Bank 117 may contain insulating materials. For example, Bank 117 may contain organic insulating materials. For example, Bank 117 may consist of polyimide, acrylic, or benzocyclobutene (BCB) resins, and Bank 117 may contain, but is not limited to, the overcoat layer 105 and other materials. Bank 117 may also contain inorganic insulating materials such as silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, and titanium oxide. Furthermore, Bank 117 may be composed of a black bank with high light absorption to prevent or reduce color mixing between adjacent subpixels.

[0096] A spacer 118 may be placed on the bank 117. The spacer 118 is a layer that maintains a certain distance between the deposition mask and the bank 117 to prevent damage from contact with the deposition mask. The spacer 118, like the bank 117, may be made of polyimide resin, acrylic resin, or benzocyclobutene (BCB) resin, but the present invention is not limited thereto. Referring to Figure 4, the bank 117 and the spacer 118 are shown as separate components, but the present invention is not limited thereto. For example, the bank 117 and the spacer 118 may be formed together in a single process.

[0097] A sealing portion 170 may be arranged on the light-emitting element 160. The sealing portion 170 may have a multilayer structure. For example, the sealing portion 170 may include a first sealing layer 171, a second sealing layer 172, and a third sealing layer 173 stacked in order, but the present invention is not limited thereto.

[0098] A first sealing layer 171 may be placed on the light-emitting element 160. The first sealing layer 171 can be placed on the light-emitting element 160 to suppress the penetration of moisture and oxygen. The first sealing layer 171 may consist of an inorganic material such as silicon oxide (SiOX), silicon nitride (SiNx), silicon oxynitride (SiNxOy), or aluminum oxide (AlyOz), but the present invention is not limited thereto.

[0099] The second sealing layer 172 can be placed on the first sealing layer 171 to flatten the surface. The second sealing layer 172 can also cover foreign matter or particles that may be generated during the manufacturing process. The second sealing layer 172 may be made of an organic material, such as silicon oxycarbon (SiOxCz), an acrylic or epoxy resin, but the present invention is not limited thereto.

[0100] The third sealing layer 173 may be placed on the second sealing layer 172 and can suppress the penetration of moisture and oxygen, similar to the first sealing layer 171. In this case, the third sealing layer 173 and the first sealing layer 171 may be formed to seal the second sealing layer 172. Therefore, the third sealing layer 173 can more effectively reduce the amount of moisture and oxygen penetrating the light-emitting element 160. The third sealing layer 173 may be made of an inorganic material such as silicon oxide (SiOX), silicon nitride (SiNx), silicon oxynitride (SiNxOy), or aluminum oxide (AlyOz), but the present invention is not limited thereto. The thickness difference generated by the light-emitting element 160 can be eliminated by the second sealing layer 172. For example, the upper surface of the second sealing layer 172 facing the substrate 110 may be flat.

[0101] A touch buffer layer 181 may be placed on the sealing portion 170. The touch buffer layer 181 may be placed between the sealing portion 170 and the conductive pattern 182 and configured to insulate the conductive pattern 182. For example, the touch buffer layer 181 may include an insulating material. For example, the touch buffer layer 181 may consist of an organic insulating material or an inorganic insulating material, but the present invention is not limited thereto.

[0102] A conductive pattern 182 may be arranged on the touch buffer layer 181. The conductive pattern 182 may be electrically connected to a touch electrode that may be arranged on a second touch insulating layer 185, but the present invention is not limited thereto. Alternatively, a touch bridge electrode may be further arranged separately from the conductive pattern 182 and connected to a touch electrode that may be arranged on the second touch insulating layer 185. In this case, the conductive pattern 182 may be arranged on the same layer as the touch bridge electrode. The conductive pattern 182 may be made of the same material as the touch bridge electrode. For example, the conductive pattern 182 may include metallic materials such as titanium (Ti), aluminum (Al), silver (Ag), copper (Cu), magnesium-silver alloy (Mg:Ag), etc., but the present invention is not limited thereto.

[0103] A first touch insulating layer 183 may be placed on the conductive pattern 182. The first touch insulating layer 183 may be placed between the conductive pattern 182 and the black matrix 184 and configured to insulate the conductive pattern 182.

[0104] The first touch insulating layer 183 may contain an insulating material. For example, the first touch insulating layer 183 may contain an organic insulating material or an inorganic insulating material, but the present invention is not limited thereto.

[0105] A black matrix 184 is placed on the first touch insulating layer 183. The black matrix 184 may be placed to reduce color mixing between multiple subpixels SP. The black matrix 184 may be placed so as to overlap with the bank 117.

[0106] The black matrix 184 includes a plurality of first apertures OA1 that expose at least a portion of the first light-emitting region RE1. The number of first apertures OA1 may correspond to the number of first light-emitting regions RE1.

[0107] One end of the first aperture OA1 may protrude inward from one end of the first light-emitting region RE1. A portion of the black matrix 184 may overlap with the first light-emitting region RE1. The other end of the first aperture OA1 does not have to overlap with the first light-emitting region RE1. The other end of the first aperture OA1 may be positioned outside the first light-emitting region RE1. The other end of the first aperture OA1 may be positioned in a second direction D2 relative to one end of the first aperture OA1. For example, the center of the first light-emitting region RE1 may be shifted in a first direction D1 relative to the center of the first aperture OA1.

[0108] A second touch insulating layer 185 may be placed on the black matrix 184. The second touch insulating layer 185 may be placed between the black matrix 184 and the barrier layer 186 and configured to insulate the barrier layer 186. The second touch insulating layer 185 may contain an insulating material. For example, the second touch insulating layer 185 may contain an organic insulating material or an inorganic insulating material, but the present invention is not limited thereto.

[0109] A barrier layer 186 is positioned on the second touch insulating layer 185. The barrier layer 186 may be positioned to overlap with the bank 117 and the black matrix 184. The barrier layer 186 may contain an opaque metallic material. The barrier layer 186 can restrict the path of light generated by the light-emitting element 160. For example, the barrier layer 186 can block light that travels laterally from the light emitted in the first light-emitting region RE1. In this case, the barrier layer 186 may also be referred to as a view control layer or view control pattern.

[0110] The barrier layer 186 may include a plurality of second apertures OA2 that overlap with the first aperture OA1 of the black matrix 184. In this case, one end of the second apertures OA2 may protrude toward the center of the first optical member 191 more than one end of the first aperture OA1. At least a portion of the barrier layer 186 may overlap with the first light-emitting region RE1. For example, the center of the first aperture OA1 may be shifted in a first direction D1 relative to the center of the second apertures OA2. The size of the first aperture OA1 may be the same as or larger than the size of the second apertures OA2.

[0111] The barrier layer 186 may include, for example, metallic substances such as titanium (Ti), aluminum (Al), silver (Ag), copper (Cu), and magnesium-silver alloy (Mg:Ag), but the present invention is not limited thereto.

[0112] Touch electrodes may be further arranged on the second touch insulating layer 185. The touch electrodes may be configured to sense (perceive) external touch input using a user's finger or a stylus, etc.

[0113] The barrier layer 186 may be located on the same layer as the touch electrode. The barrier layer 186 may be made of the same material as the touch electrode, but the present invention is not limited thereto.

[0114] A third touch insulating layer 187 may be placed on the barrier layer 186. The third touch insulating layer 187 may be placed between the barrier layer 186 and the first optical member 191 and configured to insulate the barrier layer 186.

[0115] Multiple first optical members 191 are arranged on the third touch insulating layer 187 so as to overlap with the multiple second openings OA2 of the barrier layer 186. For example, the first optical members 191 may be arranged to cover the edges of the barrier layer 186, but the present invention is not limited thereto.

[0116] Referring to both Figures 3 and 4, the first optical member 191 can restrict the direction of light propagation to a first direction D1 and / or a third direction D3. For example, the planar shape of the first optical member 191 may be circular. However, the present invention is not limited thereto. The first optical member 191 located within each sub-pixel RSP, GSP, BSP may have a polygonal shape in plan view.

[0117] The center of the first optical element 191 may not coincide with the center of the first light-emitting region RE1. For example, the center of the first light-emitting region RE1 may be shifted in a first direction D1 with respect to the center of the first optical element 191. The inclined surface of the first light-emitting region RE1 may be tilted toward a second direction D2. In this case, the content (or image) provided by the first light-emitting region RE1 may be provided toward the second direction D2.

[0118] A protective film 119 may be placed on the first optical member 191. The protective film 119 may include an insulating material. For example, the protective film 119 may include an organic insulating material.

[0119] Next, with reference to Figure 5, the region in which the second group of light-emitting elements G2 of the first subpixel RSP is arranged in the display device 100 according to one embodiment of this specification will be described. However, although the region in which the second group of light-emitting elements G2 of the first subpixel RSP is arranged will be described with reference to Figure 5, the same content as for the first subpixel RSP may also apply to the regions in the second subpixel GSP and third subpixel BSP where the second group of light-emitting elements G2 is arranged.

[0120] The region where the second group of light-emitting elements G2 of the first subpixel RSP is located differs from the region where the first group of light-emitting elements G1 is located only in the configuration of the second protrusion 116b; all other configurations are identical to those of the region where the first group of light-emitting elements G1 is located, so redundant explanations are omitted.

[0121] Referring to Figure 5, in the region where the second group of light-emitting elements G2 are arranged, a second projection 116b may be arranged on the first planarization layer 115. The second projection 116b may include at least one inclined surface that is tilted toward the first direction D1. For example, the height of at least one inclined surface may decrease toward the first direction D1.

[0122] The second projection 116b may further include other inclined surfaces inclined in the second direction D2, but the present invention is not limited thereto. For example, referring to Figure 5, the second projection 116b is shown to include one inclined surface inclined in the first direction D1 and another inclined surface inclined in the second direction D2, but the present invention is not limited thereto. To give another example, the second projection 116b may not include an inclined surface inclined in the second direction D2.

[0123] Furthermore, referring to Figure 5, the second projection 116b is shown as having two inclined surfaces that are tilted in the first direction D1 and two inclined surfaces that are tilted in the second direction D2, with different inclinations. However, the present invention is not limited to this. For example, the second projection 116b may have two inclined surfaces that are tilted in the first direction D1 and two inclined surfaces that are tilted in the second direction D2, with identical inclinations. The second projection 116b may also be formed symmetrically, but the present invention is not limited to this.

[0124] The second protrusion 116b may be made of polyimide, acrylic, or benzocyclobutene (BCB) resin, but the present invention is not limited thereto. Furthermore, the second protrusion 116b may be formed from the same material as the first planarization layer 115, but the present invention is not limited thereto. Referring to Figure 5, an interface is shown between the second protrusion 116b and the first planarization layer 115, but if the second protrusion 116b is made from the same material as the first planarization layer 115, an interface between the second protrusion 116b and the first planarization layer 115 is not required. For example, the second protrusion 116b and the first planarization layer 115 may be formed integrally, but the present invention is not limited thereto.

[0125] A light-emitting element 160 is positioned on the first flattening layer 115 and the second protrusion 116b. The light-emitting element 160 of the second group G2 differs from the light-emitting element G1 of the first group only in the direction in which the second light-emitting region RE2 is tilted and its relative position to the second optical member 192; otherwise, the configuration is substantially the same, so redundant explanations are omitted.

[0126] A first electrode 161 is placed on the first flattening layer 115 and the second protrusion 116b. In this case, the first electrode 161 includes an inclined surface tilted in the first direction D1. For example, the first electrode 161 can be placed on the inclined surface of the second protrusion 116b tilted in the first direction D1 to form an inclined surface tilted in the first direction D1.

[0127] The inclination angle of the inclined surface of the first electrode 161, which is tilted in the first direction D1, can be varied depending on the viewer's field of view and is not limited to a specific inclination angle.

[0128] A light-emitting layer 162 and a second electrode 163 are placed on the first electrode 161.

[0129] In the region where the first group of light-emitting elements G1 are arranged, the bank 117 is positioned to expose the inclined surface of the first electrode 161 that is tilted in the first direction D1. The bank 117 may be positioned to cover the region of the first electrode 161 other than the inclined surface tilted in the first direction D1. The light-emitting layer 162 and the second electrode 163 may then be positioned to cover the inclined surface tilted in the first direction D1 that is exposed by the bank 117. In this case, the light-emitting layer 162 and the second electrode 163 may each extend from the inclined surface tilted in the first direction D1 to the top surface of the bank 117. In this way, the first electrode 161, the light-emitting layer 162 and the second electrode 163 are in contact with each other on the inclined surface tilted in the first direction D1 that is exposed by the bank 117, thereby defining the second light-emitting region RE2.

[0130] Referring to Figure 5, the height of the bank 117 located at one end of the second light-emitting region RE2 is shown to be different from the height of the upper surface of the bank 117 located at the other end, but the present invention is not limited thereto. The height of the upper surface of all banks 117 may be the same.

[0131] In the region where the second group of light-emitting elements G2 are arranged, a plurality of second optical members 192 may be arranged on the third touch insulating layer 187 so as to overlap with a plurality of second openings OA2 of the barrier layer 186. For example, the first optical member 191 may be arranged to cover the edge of the barrier layer 186, but is not limited thereto.

[0132] Referring to both Figures 3 and 5, the second optical member 192 can restrict the direction of light propagation to a first direction D1 and / or a third direction D3. For example, the second optical member 192 may have a circular shape in plan view. However, the present invention is not limited thereto, and the second optical member 192 located within each sub-pixel RSP, GSP, BSP may have a polygonal shape in plan view.

[0133] The center of the second optical element 192 may not coincide with the center of the second light-emitting region RE2. For example, the center of the second light-emitting region RE2 may be shifted in the second direction D2 with respect to the center of the second optical element 192. The inclined surface of the second light-emitting region RE2 may be tilted toward the first direction D1. In this case, the content (or image) provided by the second light-emitting region RE2 may be provided toward the first direction D1.

[0134] On the other hand, if the display device is positioned on at least part of the vehicle's dashboard, it can provide content to users, such as the driver and passengers. In this case, if a single display device provides different content to the driver and passengers, the displayed content must also be provided at different viewing angles because the driver and passengers are in different positions. One method for providing content at different viewing angles using a single display device is to shift the center of the light-emitting region in different directions relative to the center of the optical element. However, the luminance distribution of the light-emitting region tends to decrease symmetrically from the center, and if the light-emitting region is shifted in a direction other than the center of the optical element in this way, the maximum luminance may be lower than when the center of the optical element and the center of the light-emitting region coincide.

[0135] In one embodiment of this specification, the display device 100 includes a light-emitting element whose light-emitting region is tilted in the direction of the viewer's field of view, thereby allowing the direction in which the light-emitting region faces to coincide with the viewer's field of view.

[0136] Referring to Figure 4 as an example, the display device 100 according to one embodiment of this specification may include a first light-emitting region RE1 having an inclined surface tilted in a second direction D2. The direction ED1 that the first light-emitting region RE1 faces may also be tilted in the second direction D2. Therefore, the viewing angle of a user viewing in the second direction D2 may coincide with the direction ED1 that the first light-emitting region RE1 faces. Also, referring to Figure 5 as an example, the display device 100 according to one embodiment of this specification may include a second light-emitting region RE2 having an inclined surface tilted in a first direction D1. The direction ED2 that the second light-emitting region RE2 faces may also be tilted in the first direction D1. Therefore, the viewing angle of a user viewing in the first direction D1 may coincide with the direction ED2 that the second light-emitting region RE2 faces.

[0137] Thus, the display device 100 according to one embodiment of this specification can provide a dual view that offers different images to each viewer located in different directions, by including a first light-emitting region RE1 and a second light-emitting region RE2 that are tilted in different directions from each other.

[0138] Furthermore, in the display device 100 according to one embodiment of this specification, by forming an inclined surface on the light-emitting area so that the viewing angle of each user matches the direction the light-emitting area faces, the maximum brightness at each viewing angle of users who are not directly in front of the display device 100 can be improved. Therefore, multiple users can view higher quality content according to their respective viewing angles.

[0139] Furthermore, as in the display device 100 according to one embodiment of this specification, when the light-emitting region consists of an inclined surface, when the light emitted from the light-emitting region is reflected by the barrier layer 186 and returns to the light-emitting region, the maximum brightness at the viewing angle can be improved by reflecting it again in the direction of the viewer's viewing angle. Referring to Figure 4, on the first light-emitting region RE1, one end of the barrier layer 186 may protrude inward from the black matrix 184 into the first light-emitting region RE1. Therefore, some of the light LP1 emitted from the first light-emitting region RE1 may be reflected back toward the first light-emitting region RE1 by the barrier layer 186. In addition, the light LP1 thus reflected may pass through a region formed by the difference in length between the protruding portions of the barrier layer 186 and the black matrix 184 and reach the first light-emitting region RE1 again. Since the barrier layer 186 is formed in the same layer as the touch electrode, it may be formed as part of the touch electrode, or it may be formed in an island form isolated from the touch electrode. Furthermore, the light LP1 reflected from the first light-emitting region RE1 at the tilt angle of the first light-emitting region RE1 can be reflected again in the direction ED1 that the first light-emitting region RE1 is facing. In this way, the display device 100 according to one embodiment of this specification can further expand the reflected light generation area. Therefore, the direction of propagation of a larger amount of light can be changed to the viewing angle direction of the viewer, and the maximum brightness at the desired viewing angle can be improved.

[0140] Figure 6 is a cross-sectional view of a display device according to another embodiment of this specification. Figure 7 is a cross-sectional view of a display device according to another embodiment of this specification.

[0141] Figure 6 is a cross-sectional view of the region corresponding to Figure 4, and Figure 7 is a cross-sectional view of the region corresponding to Figure 5. The display device 200 in Figures 6 and 7 is substantially identical to the display device 100 in Figures 1 to 5, differing only in the black matrix 284; therefore, redundant explanations are omitted.

[0142] Referring to Figures 6 and 7, a black matrix 284 is placed on the first touch insulating layer 183. In this case, the black matrix 284 may be placed so as to overlap with bank 117.

[0143] The black matrix 284 includes a plurality of first apertures OA1 that expose at least a portion of the first light-emitting region RE1 and the second light-emitting region RE2. The number of first apertures OA1 may correspond to the number of first light-emitting regions RE1 and the second light-emitting regions RE2.

[0144] One end of the first opening OA1 may coincide with one end of the first light-emitting region RE1 and one end of the second light-emitting region RE2, respectively. For example, referring to Figure 6, one end of the bank 117 located at the upper end of the first projection 116a and one end of the first opening OA1 may be located on the same line extending in the third direction D3. The other end of the first opening OA1 may be located outside the first light-emitting region RE1 than the other end of the bank 117 located at the lower end of the first projection 116a.

[0145] Next, referring to Figure 7, one end of the bank 117 located at the upper end of the second projection 116b and one end of the first opening OA1 may be located on the same line extending in the third direction D3. The other end of the first opening OA1 may be located outside the second light-emitting region RE2 than the other end of the bank 117 located at the lower end of the second projection 116b.

[0146] The first light-emitting region RE1 and the second light-emitting region RE2 may not overlap with the black matrix 284 in the thickness direction of the display device.

[0147] Other embodiments of the display device 200 according to this specification include a light-emitting element whose light-emitting region is inclined in the direction of the viewer's field of view. Therefore, the direction in which the light-emitting region faces may coincide with the viewer's field of view.

[0148] Using Figure 6 as an example, a display device 200 according to another embodiment of this specification may include a first light-emitting region RE1 having an inclined surface tilted in a second direction D2. Therefore, the viewing angle of a user viewing content in the second direction D2 may coincide with the direction ED1 that the first light-emitting region RE1 faces. Also, using Figure 7 as an example, a display device 200 according to another embodiment of this specification may include a second light-emitting region RE2 having an inclined surface tilted in a first direction D1. Therefore, the viewing angle of a user viewing content in the first direction D1 may coincide with the direction ED2 that the second light-emitting region RE2 faces.

[0149] Thus, the display device 200 according to other embodiments of this specification includes a first light-emitting region RE1 and a second light-emitting region RE2 that are tilted in different directions from each other. Therefore, the display device 200 can provide a dual view that provides different images to each viewer located in different directions from each other.

[0150] Furthermore, in the display device 200 according to other embodiments of this specification, an inclined surface is formed on the light-emitting area so that the viewing angle of each user matches the direction the light-emitting area faces, thereby improving the maximum brightness at each viewing angle of users who are not directly in front of the display device 200. As a result, multiple users can view higher quality content according to their respective viewing angles.

[0151] Furthermore, in the display device 200 according to other embodiments of this specification, the first aperture OA1 of the black matrix 284 can be extended until one end of the first aperture OA1 is aligned with one end of the first light-emitting region RE1 and the second light-emitting region RE2. Therefore, when light emitted from the first light-emitting region RE1 and the second light-emitting region RE2 is reflected by the barrier layer 186 and returns to the first light-emitting region RE1 and the second light-emitting region RE2, absorption by the black matrix 284 can be more effectively prevented.

[0152] Referring to Figure 7, a portion of the light LP2 emitted from the first light-emitting region RE1 may be directed toward the barrier layer 186 located above it. The light that reaches the barrier layer 186 is reflected by the lower surface of the barrier layer 186, passes through the first aperture OA1, and returns to the first light-emitting region RE1. In this case, in the display device 200 according to one embodiment of this specification, since the first aperture OA1 is more expanded, a larger amount of light reflected from the barrier layer 186 can pass through the first aperture OA1. Therefore, a larger amount of light can be re-reflected in the first light-emitting region RE1 and directed toward the first optical member 191. Thus, in the display device 200 according to another embodiment of this specification, the direction of propagation of more light can be changed toward the viewer's viewing angle, and the maximum brightness at the desired viewing angle can be further improved.

[0153] In the following, the change in maximum brightness with respect to the viewing angle of the display device 100 according to one embodiment of this specification and the display device 200 according to another embodiment will be described in more detail with reference to Figure 8.

[0154] Figure 8 shows the results of a simulation comparing the change in brightness with respect to viewing angle in the comparative examples and examples described herein.

[0155] In Figure 8, Embodiment 1 shows the brightness of a display device 100 according to one embodiment of this specification, described with reference to Figures 1 to 5, where the first light-emitting region RE1 is positioned biased toward the first direction D1 with respect to the first optical member 191 and tilted toward the second direction D2, as described with reference to Figure 4. In this case, the tilt angle of the first light-emitting region RE1 is set to 7° with respect to the substrate 110. In Embodiment 1, one end of the first opening OA1 of the black matrix 184 protrudes inward from the first light-emitting region RE1 beyond one end of the bank 117 located above the first protrusion 116a. Embodiment 2 shows a display device 200 according to another embodiment of this specification, where the first light-emitting region RE1 is positioned biased toward the first direction D1 with respect to the first optical member 191 and tilted toward the second direction D2, as described with reference to Figure 6. In this case, the tilt angle of the first light-emitting region RE1 is set to 7° with respect to the substrate 110. In Example 2, one end of the bank 117 located above the first protrusion 116a and one end of the first opening OA1 of the black matrix 284 are aligned on the same line. In the comparative example, compared to Example 1, the light-emitting region is arranged parallel to the substrate without tilting.

[0156] In Figure 8, the X-axis represents the field of view (°), with a field of view of 0° as the reference point. The left side represents the change in the field of view in the second direction D2, and the right side represents the change in the field of view in the first direction D1. The Y-axis represents the luminance value.

[0157] Referring to Figure 8, it was confirmed that the brightness at a viewing angle of approximately 30° in the second direction D2 was significantly improved in Example 1, which was tilted in the second direction D2, compared to the comparative example. This means that when a user views the image from the side, the light-emitting area is positioned to tilt in the direction the user is located, thus increasing the brightness value emitted in the direction the user is located. In other words, when a user views the image from one side of the display device, the user can view a higher quality image.

[0158] Furthermore, in Embodiment 2, where one end of the first aperture OA1 of the black matrix 284 coincides with one end of the bank 117, it was confirmed that the luminance value at the same viewing angle was improved compared to Embodiment 1, where one end of the first aperture OA1 of the black matrix 184 protrudes further into the first light-emitting region RE1 than one end of the bank 117. This means that by extending the first aperture of the black matrix to the end of the bank, the path of more light is modified to face the first optical element 191. Therefore, when a user views an image on one side of the display device, the user can view a higher quality image.

[0159] A display device according to one embodiment of this specification can be described as follows. The display device according to one embodiment of this specification includes a substrate, a light-emitting element disposed on the substrate and having an inclined surface, a light-emitting layer and a second electrode, a bank disposed on the first electrode and exposing the inclined surface to define a light-emitting region, a black matrix disposed on the bank and including a first aperture superimposed on the light-emitting region, a barrier layer disposed on the black matrix and including a second aperture superimposed on the first aperture, and an optical member disposed on the second aperture.

[0160] According to other features of this specification, the center of the light-emitting region may be shifted to one side with respect to the center of the optical component.

[0161] According to other features of this specification, the height of the inclined surface can decrease as it moves in the opposite direction to the direction in which the center of the luminescent region is shifted.

[0162] According to another feature of this specification, one end of the first opening may protrude inward from one end of the light-emitting region.

[0163] According to other features of this specification, one end of the first aperture may coincide with one end of the light-emitting region.

[0164] According to other features of this specification, one end of the second aperture may protrude more toward the center of the optical member than one end of the first aperture.

[0165] According to other features of this specification, the display device may further include a planar layer disposed on a substrate, and protrusions disposed on the planar layer, on which light-emitting regions may be disposed.

[0166] According to other features of this specification, the barrier layer may include an opaque material.

[0167] According to other features of this specification, the size of the first opening may be the same as the size of the second opening, or it may be larger than the size of the second opening.

[0168] A display device according to another embodiment of this specification includes a substrate, a plurality of light-emitting elements disposed on the substrate and including a light-emitting region having an inclined surface, a black matrix disposed on the plurality of light-emitting elements and including a plurality of first apertures corresponding to the light-emitting regions of the plurality of light-emitting elements, a barrier layer disposed on the black matrix and including a plurality of second apertures that overlap at least a portion of the plurality of first apertures, and a plurality of optical members disposed on the plurality of second apertures, wherein the plurality of light-emitting elements include a first group of light-emitting elements whose inclined surface is tilted in a second direction, and a second group of light-emitting elements whose inclined surface is tilted in a first direction different from the second direction.

[0169] According to other features of this specification, the first direction and the second direction may be opposite to each other.

[0170] According to other features of this specification, the center of each light-emitting element in the first group may be shifted in the first direction with respect to the center of each of the multiple optical members, and the center of each light-emitting element in the second group may be shifted in the second direction with respect to the center of each of the multiple optical members.

[0171] According to other features of this specification, the first group of light-emitting elements and the second group of light-emitting elements may be arranged alternately in a third direction perpendicular to the first direction on a plane.

[0172] According to other features of this specification, the plurality of optical members may include a first optical member superimposed on a first group of light-emitting elements, and a second optical member superimposed on a second group of light-emitting elements, wherein the first optical member and the second optical member may be arranged in a zigzag pattern in a third direction.

[0173] According to other features of this specification, the display device may further include a planar layer disposed on a substrate, and a plurality of protrusions disposed on the planar layer, wherein the light-emitting regions of each of the plurality of light-emitting elements may be disposed on the plurality of protrusions.

[0174] According to other features of this specification, one end of a plurality of second apertures may protrude more toward the center of the plurality of optical members than one end of a plurality of first apertures.

[0175] According to other features of this specification, one end of a plurality of first apertures may coincide with one end of a light-emitting region.

[0176] According to other features of this specification, one end of a plurality of first apertures may protrude inward into the light-emitting region.

[0177] A display device according to yet another embodiment of this specification includes a substrate, a light-emitting element disposed on the substrate and comprising a first electrode having an inclined surface, a light-emitting layer, and a second electrode, a bank disposed on the first electrode and exposing the inclined surface to define the light-emitting region of the light-emitting element, and an optical element disposed on the bank and overlapping at least a portion of the light-emitting region, wherein the center of the light-emitting region is shifted in a first direction with respect to the center of the optical element, and the height of the inclined surface decreases as it moves in the direction opposite to the first direction.

[0178] Although embodiments of the present invention have been described in more detail above with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and can be modified and implemented in various ways within the scope of the technical concept of the present invention. Accordingly, the embodiments disclosed herein are for illustrative purposes only, not to limit the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. All technical concepts that fall within the same scope as the technical scope of the present invention should be interpreted as being included in the technical scope of the present invention.

Claims

1. substrate, A light-emitting element comprising a first electrode having an inclined surface, a light-emitting layer and a second electrode, disposed on the substrate, A bank, which is placed on the first electrode and exposes the inclined surface to define the light-emitting region of the light-emitting element, A black matrix, which is arranged on the bank and includes a first aperture that overlaps with the light-emitting region, A barrier layer disposed on the black matrix and including a second opening that overlaps with the first opening, and Optical member disposed on the second opening A display device, including a display device.

2. The display device according to claim 1, wherein the center of the light-emitting region is shifted to one side with respect to the center of the optical member.

3. The display device according to claim 2, wherein the height of the inclined surface decreases as it moves in the direction opposite to the direction in which the center of the light-emitting region is shifted.

4. The display device according to claim 1, wherein one end of the first opening protrudes from one end of the light-emitting region toward the inside of the light-emitting region.

5. The display device according to claim 1, wherein one end of the first opening coincides with one end of the light-emitting region.

6. The display device according to claim 4 or 5, wherein one end of the second opening protrudes more toward the center of the optical member than one end of the first opening.

7. A planar layer disposed on the substrate, and Protrusions disposed on the flattened layer It further includes, The light-emitting region is positioned on the protruding portion. The display device according to claim 1.

8. The display device according to claim 1, wherein the barrier layer comprises an opaque metallic substance.

9. The display device according to claim 1, wherein the size of the first opening is the same as or larger than the size of the second opening.

10. substrate, A plurality of light-emitting elements, including a light-emitting region having an inclined surface, are arranged on the substrate. A black matrix arranged on the plurality of light-emitting elements, including a plurality of first apertures corresponding to the light-emitting regions of the plurality of light-emitting elements, A barrier layer disposed on the black matrix, including a plurality of second openings that overlap at least a portion of the plurality of first openings, and Multiple optical members arranged on the multiple second openings Includes, The plurality of light-emitting elements are A first group of light-emitting elements in which the inclined surface is tilted in a second direction, and A second group of light-emitting elements in which the inclined surface is tilted in a first direction different from the second direction. A display device, including a display device.

11. The display device according to claim 10, wherein the first direction and the second direction are opposite to each other.

12. The center of each of the first group of light-emitting elements is shifted in the first direction with respect to the center of each of the plurality of optical elements. The display device according to claim 10, wherein the center of the second group of light-emitting elements is shifted in the second direction with respect to the center of each of the plurality of optical elements.

13. The display device according to claim 10, wherein the light-emitting elements of the first group and the light-emitting elements of the second group are alternately arranged in a third direction perpendicular to the first direction on a plane.

14. The plurality of optical members include a first optical member superimposed on the first group of light-emitting elements and a second optical member superimposed on the second group of light-emitting elements. The first optical member and the second optical member are arranged in a zigzag pattern in the third direction. The display device according to claim 13.

15. A planar layer disposed on the substrate, and Multiple protrusions arranged on the flattening layer It further includes, The light-emitting regions of the plurality of light-emitting elements are arranged on the plurality of protrusions. The display device according to claim 10.

16. The display device according to claim 10, wherein one end of the plurality of second openings protrudes toward the center of the plurality of optical members more than one end of the plurality of first openings.

17. The display device according to claim 10, wherein one end of the plurality of first openings coincides with one end of the light-emitting region.

18. The display device according to claim 10, wherein one end of the plurality of first openings protrudes inward into the light-emitting region.

19. substrate, A light-emitting element comprising a first electrode having an inclined surface, a light-emitting layer and a second electrode, disposed on the substrate, A bank, which is arranged on the first electrode and exposes the inclined surface to define the light-emitting region of the light-emitting element, An optical member disposed on the bank and superimposed on the light-emitting region, at least in part. Includes, The center of the light-emitting region is shifted in a first direction with respect to the center of the optical member. The height of the inclined surface decreases as you move in the direction opposite to the first direction. Display device.

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