Display device

Abstract

Disclosed is a display device capable of improving light extraction efficiency and reducing driving power through high brightness characteristics. The display device includes an insulating layer on the substrate and including at least one recess including a flat portion in one sub-pixel and an inclined portion surrounding the flat portion. The display device further includes a bank layer on the insulating layer and including an opening region in the sub-pixel, where the opening region is surrounded by the inclined portion, and where a center point of a region of the recess does not overlap a center point of the opening region of the bank layer.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0141001 filed on October 20, 2023, which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein. Technical Field

[0003] Embodiments of the present disclosure relate to a display device. Background Art

[0004] As the information society develops, the demand for display devices for displaying images in various forms is increasing. Recently, various display devices such as liquid crystal display devices, plasma display devices, and organic light emitting display devices are being used.

[0005] A display device that realizes various information as a screen is a key technology in the information and communication technology era, and plays a role of displaying various information in a display area.

[0006] While display devices exhibiting excellent display quality and luminous efficiency are generally desirable, there are problems in developing displays that exhibit these characteristics. For example, existing displays with excellent display quality may have low luminous efficiency and therefore utilize excessive power. In addition, a number of challenges have been encountered in previous attempts to produce light emitting elements with increased luminous efficiency and thus reduced power consumption. Therefore, it would be advantageous to have a display device that overcomes these and other defects and shortcomings of known displays. Summary of the invention

[0007] According to the development of technology, as the display device preferably uses less power, the importance of light emitting efficiency is increasing. In some embodiments, the display device is implemented in an environment with limited power supply, thus increasing the importance of light emitting efficiency.

[0008] The light efficiency of a display device may be determined by a light emitting element included in the display device. A display device including a light emitting element having excellent light efficiency may have excellent light efficiency. Therefore, improving the light efficiency of the light emitting element may be considered as a method of improving the light efficiency of the display device. However, it is difficult to improve the light efficiency of the light emitting element, and existing attempts are generally insufficient or ineffective solutions.

[0009] Embodiments of the present disclosure may provide a display device capable of improving light extraction efficiency.

[0010] Embodiments of the present disclosure may provide a display device capable of achieving low-power driving through high-brightness characteristics.

[0011] An embodiment of the present disclosure may provide a display device comprising: an insulating layer located on a substrate and comprising at least one recess, the at least one recess comprising a flat portion in a sub-pixel and an inclined portion surrounding the flat portion; and a dam layer located on the insulating layer and comprising an opening area in the sub-pixel, wherein the opening area may be surrounded by the inclined portion, and wherein a center point of an area of ​​the recess does not overlap with a center point of the opening area of ​​the dam layer.

[0012] An embodiment of the present disclosure may provide a display device comprising: an insulating layer located on a substrate and comprising at least one recess, the recess comprising a flat portion in a sub-pixel and an inclined portion surrounding the flat portion; and a dam layer located on the insulating layer and comprising an opening area in the sub-pixel, wherein the opening area is surrounded by the inclined portion, wherein the inclined portion of the recess comprises a first inclined portion and an upper portion horizontally facing the sub-pixel and a second inclined portion of the first inclined portion, and wherein, when measured parallel to the upper surface of the sub-pixel, a distance from a center line of the opening area of ​​the dam layer to an upper surface of the first inclined portion may be different from a distance from a center line of the opening area of ​​the dam layer to an upper surface of the second inclined portion.

[0013] According to an embodiment of the present disclosure, a display device capable of improving light extraction efficiency can be provided.

[0014] According to an embodiment of the present disclosure, a display device capable of low-power driving through high brightness characteristics can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other embodiments, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1A is a plan view showing a narrow viewing angle mode in a mode-switchable privacy mode as an example according to an embodiment of the present disclosure;

[0017] Figure 1B is a plan view showing a wide viewing angle mode in a mode-switchable privacy mode as another example according to an embodiment of the present disclosure;

[0018] Figure 2 is a plan view showing sub-pixels arranged in an active area of ​​a display device according to an embodiment of the present disclosure;

[0019] Figure 3 is a plan view showing sub-pixels arranged in an active area of ​​a display device according to another embodiment of the present disclosure;

[0020] Figure 4 yes Figure 2 An enlarged plan view of the area PG1;

[0021] Figure 5 yes Figure 3 An enlarged plan view of the area PG2;

[0022] Figure 6 is a plan view showing an operation scheme of the display device according to a mode in a mode-switchable privacy mode in the display device according to an embodiment of the present disclosure;

[0023] Fig. 7A is a perspective view showing a first lens of a display device according to an embodiment of the present disclosure;

[0024] Figure 7B is a perspective view showing a second lens of a display device according to an embodiment of the present disclosure;

[0025] Fig. 8A yes Figure 5 An enlarged plan view of an embodiment of SP1;

[0026] Figure 8B yes Figure 5 An enlarged plan view of an embodiment of SP2;

[0027] Fig.9A yes Figure 5 An enlarged plan view of another embodiment of SP1;

[0028] Fig. 9B yes Figure 5 An enlarged plan view of another embodiment of SP2;

[0029] Fig. 10A yes Figure 5 An enlarged plan view of another embodiment of SP1;

[0030] Fig. 10B yes Figure 5 An enlarged plan view of another embodiment of SP2;

[0031] Fig.11 is a plan view showing a barrier layer of a display device according to an embodiment of the present disclosure;

[0032] Fig.12 is along Fig.11 A cross-sectional view taken along line EE′;

[0033] Fig.13 is a cross-sectional view showing a structure of a display device according to an embodiment of the present disclosure;

[0034] Fig.14A is along Fig. 10A A cross-sectional view taken along line AA′ and line BB′;

[0035] Fig. 14B is along Fig. 10B A cross-sectional view taken along line CC′ and line DD′;

[0036] Fig.15 It is shown Fig. 14B An enlarged cross-sectional view of Y1 and Y2;

[0037] Fig.16 It is shown Fig.13 A cross-sectional view of the light path of the left view.

[0038] Fig.17 It is shown Fig. 14B A cross-sectional view of the light travel path of the right side view;

[0039] Fig.18 It is shown Fig. 14B A cross-sectional view of the light path of the left view;

[0040] Fig.19 is a view schematically showing changes in viewing angle brightness in up-down directions and left-right directions when the OSM structure is applied to the wide viewing angle mode and the narrow viewing angle mode of the SPM;

[0041] Fig. 20 is a view schematically showing an area connected by four vertices where minimum brightness values ​​appear in an area defined in a polar coordinate system; and

[0042] Fig.21 It is shown Fig. 20 Graph of viewing angle brightness in the reference direction in areas A1 and A2. DETAILED DESCRIPTION

[0043] In the following description of examples or embodiments of the present disclosure, reference will be made to the accompanying drawings, in which specific examples or embodiments that can be implemented are shown by way of illustration, and in which the same reference numerals and symbols may be used to represent the same or similar parts, even if the same or similar parts are shown in different drawings from each other. In addition, in the following description of examples or embodiments of the present disclosure, when it is determined that the description may make the subject matter in some embodiments of the present disclosure unclear, the detailed description of the well-known functions and components incorporated herein will be omitted. Terms such as "including", "having", "comprising", "consisting of", and "formed of" used herein are generally intended to allow the addition of other components unless these terms are used together with the term "only". As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0044] Terms such as "first", "second", "A", "B", "(A)" or "(B)" may be used herein to describe elements of the present disclosure. Each of these terms is not used to limit the essence, order, sequence or quantity of the elements, etc., but is merely used to distinguish the corresponding element from other elements.

[0045] When it is mentioned that a first element is “connected or coupled”, “contacted or overlapped”, etc. with a second element, it should be interpreted that the first element may not only be “directly connected or coupled” or “directly contacted or overlapped” with the second element, but also a third element may be “interposed” between the first element and the second element, or the first element and the second element may be “connected or coupled”, “contacted or overlapped”, etc. with each other via a fourth element. Here, the second element may be included in at least one of the two or more elements that are “connected or coupled”, “contacted or overlapped”, etc. with each other.

[0046] When time-relative terms, such as "after", "subsequently", "next", "before", etc., are used to describe a process or operation of an element or configuration, or a flow or step in an operation, process, or manufacturing method, these terms may be used to describe non-sequential or non-sequential processes or operations unless the terms "directly" or "immediately" are used together.

[0047] In addition, when referring to any size, relative dimension, etc., it should be considered that the numerical value or corresponding information (e.g., level, range, etc.) of the element or feature includes a tolerance or error range that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.), even if no relevant description is specified. In addition, the term "may" fully includes all meanings of the term "can".

[0048] Hereinafter, various embodiments of the present disclosure are described in detail with reference to the accompanying drawings.

[0049] Figure 1A and Figure 1B 1 is a plan view showing an example in which a display device 1000 with a mode-switchable privacy mode is installed in front of a passenger seat or in a dashboard of a vehicle in front of a passenger seat and is in a narrow viewing angle mode and a wide viewing angle mode in the mode-switchable privacy mode, respectively, according to an embodiment of the present disclosure.

[0050] like Figure 1A and Figure 1B As shown, the display device 1000 capable of switching between a wide viewing angle mode and a narrow viewing angle mode may be installed in front of a passenger seat of a vehicle, which may be a dashboard in front of the passenger seat or other interior parts of the vehicle.

[0051] However, the location where the display device 1000 is installed is not limited to the front of the passenger seat, but can be set in various locations such as the front of the driver's seat, the rear of the passenger seat, the rear of the driver's seat, etc., and the location where the display device 1000 is installed is not limited to the vehicle, and can be applied to all locations where privacy protection is required, including for personal mobile devices, computers, etc.

[0052] like Figure 1A As shown, in the narrow viewing angle mode, the display device 1000 provides an image with a brightness of 1% or more to the passenger, but provides an image with a brightness of less than 1% to the driver.

[0053] In other words, since visibility of the passenger sitting on the passenger seat can be ensured rather than visibility of the driver sitting on the driver seat, the privacy of the passenger sitting on the passenger seat can be protected.

[0054] like Figure 1B As shown, when in the wide viewing angle mode, the display device 1000 provides an image having a brightness of 1% or more to both the passenger and the driver, thereby providing an image that can be shared by both the passenger and the driver.

[0055] In other words, in the wide viewing angle mode, visibility can be ensured not only for the passenger sitting on the passenger seat but also for the driver sitting on the driver seat.

[0056] Figure 2 is a plan view showing a partial region of sub-pixels arranged in an active region of a display device according to an embodiment of the present disclosure.

[0057] Reference Figure 2 , a pixel disposed in an active area of ​​the display device 1000 may include sub-pixels having different colors to realize the color of an image.

[0058] The sub-pixels may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0059] Each of the sub-pixels may also include a white sub-pixel, but in Figure 2 In the description, a case including a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B is described as an example.

[0060] Each of the sub-pixels may include a pixel circuit and a light emitting element.

[0061] By setting Figure 2 By differentially designing the sizes and arrangements of the sub-pixels included in the first pixel group PG1 among the sub-pixels in the active area of ​​the display device 1000 , a switchable privacy mode system capable of switching between a wide viewing angle mode and a narrow viewing angle mode can be implemented.

[0062] However, the size and arrangement order of the sub-pixels for realizing the mode-switchable privacy mode are not limited thereto, but may be combined with Figure 2 An arrangement of three sub-pixels having a wide size and six sub-pixels having a narrow size in the first pixel group PG1 is described as an example.

[0063] Figure 3 is a plan view showing sub-pixels arranged in an active area of ​​a display device according to another embodiment of the present disclosure.

[0064] Reference Figure 3 , Figure 2 The display device 1000 may further include a reference Figure 5 The recess is further described.

[0065] When the display device 1000 further includes the concave portion, light efficiency may be improved through external light extraction efficiency and viewing angle brightness may be enhanced.

[0066] Figure 4 yes Figure 2 An enlarged plan view of area PG1.

[0067] Reference Figure 4 , the first pixel group PG1 may include a plurality of first sub-pixels SP1 and a plurality of second sub-pixels SP2. Figure 4 Only one first subpixel SP1 and one second subpixel SP2 are marked with reference numerals, but it should be understood that each of the illustrated subpixels SP1, SP2 having similar shapes and arrangements may have the same or similar features as the marked subpixels SP1, SP2.

[0068] The first sub-pixel SP1 and the second sub-pixel SP2 may include opening regions OPN1 and OPN2 , which may also be referred to herein as openings OPN1 , OPN2 .

[0069] The opening regions OPN1 and OPN2 may also be referred to as a first opening region OPN1 and a second opening region OPN2, respectively.

[0070] The light emitting regions of the sub-pixels SP1 and SP2 may be defined by the opening regions OPN1 and OPN2 .

[0071] The light emitting areas of the sub-pixels SP1 and SP2 may be substantially the same as the opening areas OPN1 and OPN2. Figure 2 As shown, the first subpixel SP1 may generally be a larger pixel having a larger opening area OPN1 compared to the second subpixel SP2 having a smaller opening area OPN2.

[0072] In the present disclosure, when A is substantially the same as B, it may mean that A and B are generally regarded as the same taking into account slight differences due to process errors or manufacturing tolerances.

[0073] The sub-pixels SP1 and SP2 may include lens units LEN1 and LEN2 corresponding to the opening areas OPN1 and OPN2, respectively. The lens units LEN1, LEN2 may also be referred to herein as lenses LEN1, LEN2.

[0074] The lens units LEN1 and LEN2 improve light efficiency by changing the optical path of light emitted from the opening areas OPN1 and OPN2. The lens units LEN1 and LEN2 are positioned to correspond to the opening areas OPN1 and OPN2, and their shapes may also correspond to the shapes of the opening areas OPN1 and OPN2, but are not necessarily limited to the shapes of the opening areas and may be various shapes. For example, in Figure 4 In the embodiment, lenses LEN1, LEN2 may overlap and completely cover opening areas OPN1, OPN2, but typically have larger size and different shape (circular or elliptical) than corresponding opening areas OPN1, OPN2 (rectangular or square). Many other configurations are contemplated herein.

[0075] Some of the sub-pixels SP1 and SP2 may emit light of different colors.

[0076] For example, the first sub-pixel SP1 may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and may emit red light, green light, and blue light, respectively.

[0077] For example, the second sub-pixel SP2 may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and may emit red light, green light, and blue light, respectively.

[0078] Figure 4 The configuration of the sub-pixels SP1 and SP2 and the red sub-pixel R, green sub-pixel G, and blue sub-pixel B shown in the plan view of FIG. 1 is a non-limiting example and is not necessarily limited thereto, but the pixels may be configured in various combinations.

[0079] Sub-pixels emitting light of different colors may include opening regions having different areas.

[0080] For example, the area of ​​the opening region that emits blue light can be maximized, and the area of ​​the opening region that emits red light can be minimized.

[0081] This is because device characteristics of light-emitting elements included in sub-pixels emitting light of different colors may be different from each other.

[0082] However, the present disclosure is not necessarily limited thereto, and the areas of the opening regions OPN1 and OPN2 may be the same regardless of Figure 4 How about the colors in the floor plan.

[0083] Figure 5 yes Figure 3 An enlarged plan view of area PG2.

[0084] Reference Figure 5 The display device according to the embodiment of the present disclosure can also be Figure 4 The sub-pixels SP1 and SP2 include concave portions CNC1 and CNC2.

[0085] The recesses CNC1 and CNC2 may also be referred to as first recess CNC1 and second recess CNC2, respectively. In an embodiment, the recesses CNC1, CNC2 are recesses, cavities, holes, or other similar structures in the surface of the display device 1000. The recess CNC2 may be narrower than the recess CNC1.

[0086] A light emitting element that emits light may be located inside the recesses CNC1 , CNC2 .

[0087] The lens units LEN1 and LEN2 may be positioned to correspond to the concave portions CNC1 and CNC2 .

[0088] Specifically, the first lens unit LEN1 can be positioned to correspond to the first recess CNC1, and the second lens unit LEN2 can be positioned to correspond to the second recess CNC2. As shown, the size of the recesses CNC1, CNC2 is generally larger than the size of the corresponding opening areas OPN1, OPN2, but smaller than the size of the lenses LEN1, LEN2, so that the lenses LEN1, LEN2 overlap and cover the recesses CNC1, CNC2. Many other configurations are contemplated, and the above are only non-limiting examples.

[0089] Figure 6 is a plan view illustrating an operation scheme of a mode-switchable display device capable of switching between a wide viewing angle mode and a narrow viewing angle mode or a privacy mode according to an embodiment of the present disclosure.

[0090] Specifically, Figure 6 It is shown Figure 4 and Figure 5 A plan view of the operating scheme of the display device.

[0091] Continue to refer to Figure 4 And refer to Figure 6 , you can switch between wide viewing angle mode and narrow viewing angle mode according to user convenience.

[0092] In the wide viewing angle mode, in order to ensure a wide viewing angle, light may be emitted from the light emitting area of ​​the first opening area OPN1 having a large opening area, and light may not be emitted from the light emitting area of ​​the second opening area OPN2 having an area smaller than that of the first opening area OPN1, which may correspond to operating the light emitting element of the first sub-pixel SP1 to output light through the first opening area OPN2, and the light emitting element of the second sub-pixel SP2 is turned off or not operated so that light is not emitted through the second opening area OPN2.

[0093] For a narrow viewing angle in the narrow viewing angle mode, light may not be emitted from the light emitting area of ​​the first opening area OPN1 having a large opening area (OFF), and light may be emitted from the light emitting area of ​​the second opening area OPN2 having a smaller area than the first opening area OPN1. Therefore, the narrow viewing angle mode may generally be opposite to the wide viewing angle mode.

[0094] When the display device 1000 is installed in front of the passenger seat, in the wide viewing angle mode, visibility of not only the passenger sitting on the passenger seat but also the driver sitting on the driver seat can be ensured.

[0095] Furthermore, in the narrow viewing angle mode, visibility of a passenger sitting in a passenger seat is ensured rather than visibility of a driver sitting in a driver seat, so that the privacy of the passenger sitting in the passenger seat can be protected and driver distraction can be reduced or avoided.

[0096] Fig. 7A and Figure 7B are perspective views respectively illustrating a first lens unit LEN1 and a second lens unit LEN2 of a display device according to an embodiment of the present disclosure.

[0097] Reference Fig. 7A , the first lens unit LEN1 may have a semi-cylindrical shape having a diameter or width C1 in the first direction FD, a diameter or length C2 in the second direction SD, and a height C3 in the third direction TD. In an embodiment, the semi-cylindrical shape of the first lens unit LEN1 may correspond to a cylinder cut in half vertically along an axis passing through the center of the cylinder, such that the resulting semi-cylindrical shape is half of the cylinder cut along the longest direction, as described above.

[0098] A diameter C2 of the first lens unit LEN1 in the second direction SD may be greater than a diameter C1 in the first direction FD to correspond to a substantially rectangular shape of the first open area OPN1 .

[0099] Although Fig. 7A The shape of the first lens unit LEN1 is a semi-cylindrical shape, but this is exemplary and is not necessarily limited to such a shape, and may be various shapes depending on the shape of the opening area OPN1 of the first sub-pixel SP1.

[0100] For example, the height C3 in the third direction TD may be half of the diameter C1 in the first direction FD, but is not necessarily limited thereto, and may be greater than or less than half of the diameter C1 in the first direction FD.

[0101] Reference Figure 7B , the second lens unit LEN2 may have a hemispherical shape having a diameter S1 in the first direction FD, a diameter S2 in the second direction SD, and a height S3 in the third direction TD.

[0102] The diameter S2 in the second direction SD and the diameter S1 in the first direction FD may be substantially the same to provide the second lens unit LEN2 with a hemispherical shape substantially corresponding to the shape of the circular second opening area OPN2. Other configurations are contemplated herein.

[0103] Although Figure 7B The shape of the second lens unit LEN2 is a hemispherical shape, but this is exemplary and is not necessarily limited thereto, and may be various shapes depending on the shape of the opening area OPN2 of the second sub-pixel SP2.

[0104] For example, the height S3 in the third direction TD may be half of the diameter S1 in the first direction FD, but is not necessarily limited thereto, and may be more than or less than half of the diameter S1 in the first direction FD. In an embodiment, the shapes of the two opening areas OPN1 and OPN2 and the optical properties of the lens units LEN1 and LEN2 contribute to achieving a wide viewing angle mode and a narrow viewing angle mode. For example, a wider or longer first opening area OPN1 and a corresponding longer lens unit LEN1 enable a wide distribution of light. The smaller and narrower second opening area OPN2 produces more targeted light, which is further concentrated by the roughly hemispherical shape of the second lens unit LEN2 to produce a targeted and narrow output beam.

[0105] Fig. 8A and Figure 8B It is shown Figure 5 An enlarged plan view of an embodiment of sub-pixels SP1 and SP2.

[0106] exist Fig. 8A and Figure 8B In the embodiment, the first lens unit and the second lens unit (not shown) are omitted to avoid blurring the details of the first sub-pixel SP1 and the second sub-pixel SP2.

[0107] Reference Fig. 8A , the first subpixel SP1 may include a first opening area OPN1 passing through the bank layer, a first concave portion CNC1 surrounding the first opening area OPN1, and a blocking layer BL in a non-opening area of ​​the bank layer and on the insulating layer.

[0108] exist Fig. 8A In the first sub-pixel SP1, the center point G1 of the first concave portion CNC1 and the center point G2 of the first opening area OPN1 may overlap each other. In an embodiment, the center points G1, G2 are directly on top of each other, which means that they are aligned and centered with respect to the first sub-pixel SP1.

[0109] In the present disclosure, the center points G1 and G2 may refer to geometric centers of regions of selected sizes and shapes when viewed on a plane defined by a first direction FD and a second direction SD orthogonal to the first direction FD.

[0110] The geometric center may be located not only inside the region but also outside the region or at the boundary of the region.

[0111] For example, Fig. 8A The center point G2 of the first opening area OPN1 may refer to an intersection of two diagonal lines connecting opposite vertices of the first opening area.

[0112] In this case, the center point G2 of the first opening region OPN1 is located inside the first opening region OPN1.

[0113] For example, Fig. 8A The center point G1 of the first concave portion CNC1 may refer to an intersection point of two diagonal lines connecting opposite vertices of a virtual rectangle inscribed in the first concave portion CNC1 .

[0114] In this case, the center point G1 of the first concave portion CNC1 is located inside the region of the first concave portion CNC1.

[0115] Reference Figure 8B In the second sub-pixel SP2, the center point G1 of the second concave portion CNC2 and the center point G2 of the second opening area OPN2 may overlap with each other and may have the same Fig. 8A The center points G1 and G2 described in are arranged in roughly the same manner.

[0116] Figure 8B The barrier layer BL can be compared with the reference Fig. 8A The described barrier layers BL are essentially the same.

[0117] Fig.9A and Fig. 9B It is shown Figure 5 FIG. 1 is an enlarged plan view of another embodiment of sub-pixels SP1 and SP2.

[0118] exist Fig.9A and Fig. 9B , the first lens unit and the second lens unit (not shown) are also omitted.

[0119] Reference Fig.9A and Fig. 9B And continue to refer to Figure 5 , Fig.9A and Fig. 9B The opening regions OPN1 and OPN2, the recesses CNC1 and CNC2, and the barrier layer BL in the reference Fig. 8A and Figure 8B The described opening regions OPN1 and OPN2 , the concave portions CNC1 and CNC2 , and the barrier layer BL are substantially the same.

[0120] Reference Fig.9A , in the first sub-pixel SP1 , a center point G1 of the first concave portion CNC1 and a center point G2 of the first opening area OPN1 may not overlap with each other.

[0121] Reference Fig. 9B , in the second sub-pixel SP2, a center point G1 of the second concave portion CNC2 and a center point G2 of the second opening area OPN2 may not overlap with each other.

[0122] like Fig.9A and Fig. 9B As shown, when the center point G1 of the recesses CNC1 and CNC2 and the center point G2 of the opening areas OPN1 and OPN2 do not overlap with each other in the sub-pixels SP1 and SP2, the recesses CNC1 and CNC2 can form an asymmetric separation distance according to any direction when observed in a first direction FD and a second direction SD orthogonal to the first direction FD, so that the viewing angle can be adjusted according to user convenience.

[0123] Fig. 10A and Fig. 10B It is shown Figure 5 FIG. 1 is an enlarged plan view of another embodiment of sub-pixels SP1 and SP2.

[0124] exist Fig. 10A and Fig. 10B , the first lens unit and the second lens unit (not shown) are also omitted.

[0125] Fig. 10A and Fig. 10B The opening regions OPN1 and OPN2, the recesses CNC1 and CNC2, and the barrier layer BL in the reference Fig. 8A and Figure 8B The described opening regions OPN1 and OPN2 , the concave portions CNC1 and CNC2 , and the barrier layer BL are substantially the same.

[0126] Reference Fig. 10A , when observed on a plane defined in a first direction FD and a second direction SD orthogonal to the first direction FD, a distance between two points where a virtual straight line (not shown) passing through the center point G1 of the area of ​​the first recess CNC1 and parallel to the second direction SD intersects with a boundary of the area of ​​the first recess CNC1 may be longer than a distance between two points where a virtual straight line (dashed arrow) passing through the center point G1 of the area of ​​the first recess CNC1 and parallel to the first direction FD intersects with the boundary of the area of ​​the first recess CNC1, and a direction (dashed arrow) of a straight line passing through the center point G1 of the area of ​​the first recess CNC1 and a center point G2 of the first opening area OPN1 may be the first direction FD.

[0127] Reference Fig. 10B, when observed on a plane defined in the first direction FD and the second direction SD orthogonal to the first direction FD like the second subpixel SP2, the distance between the two points where a virtual straight line (not shown) passing through the center point G1 of the area of ​​the second recessed portion CNC2 and parallel to the second direction SD intersects with the boundary of the area of ​​the second recessed portion CNC2 may be equal to the distance between the two points where a virtual straight line (dashed arrow) passing through the center point G1 of the area of ​​the second recessed portion CNC2 and parallel to the first direction FD intersects with the boundary of the area of ​​the second recessed portion CNC2, and the direction of the straight line (dashed arrow) passing through the center point G1 of the area of ​​the second recessed portion CNC2 and the center point G2 of the second opening area OPN2 may be the first direction FD.

[0128] like Fig. 10A and Fig. 10B As shown, when viewed in a plane defined by a first direction FD and a second direction SD orthogonal to the first direction FD, when the direction of the straight line passing through the center point G1 of the recesses CNC1 and CNC2 of each sub-pixel in the sub-pixels SP1 and SP2 and the center point G2 of the opening areas OPN1 and OPN2 is the first direction FD, an asymmetric separation distance can be formed in the first direction FD to enhance the viewing angle brightness in the upper or lower direction.

[0129] Preferably, in order to ensure the brightness of the viewing angle in the upper direction of the display device 1000 when the display device 1000 is located below the eye level of the driver sitting on the driver's seat, an asymmetric separation distance can be formed in the first direction FD of the recess to enhance the viewing angle brightness in the upper direction.

[0130] Fig.11 is a plan view showing a blocking layer BL of the display device 1000 according to an embodiment of the present disclosure.

[0131] Reference Fig.11 The barrier layer BL may include a first barrier layer BL1 on an insulating layer (not shown) with respect to a third direction TD and a second barrier layer BL2 on the first barrier layer.

[0132] Fig.11 The first barrier layer BL1 and the second barrier layer BL2 may overlap each other when viewed on a plane defined by a first direction FD and a second direction SD orthogonal to the first direction FD.

[0133] Fig.11 The barrier layer BL can be compared with the reference Figures 2 to 10B The described barrier layers BL are essentially the same.

[0134] Specifically, Fig.11 The shape of the barrier layer BL can be applied to refer to Figures 2 to 10B The barrier layer BL is described.

[0135] However, the barrier layer BL is not necessarily limited to Fig.11 The shape of the barrier layer BL can be designed into various shapes.

[0136] Fig.12 is along Fig.11 A cross-sectional view taken along line EE′.

[0137] Reference Fig.12 , the first barrier layer BL1 may have an opening area having widths A1 and A3, and the second barrier layer BL2 may have an opening area having widths A2 and A4.

[0138] For example, the opening area of ​​the first barrier layer BL1 may be greater than the opening area of ​​the second barrier layer BL2.

[0139] In other words, the widths A1 and A3 of the opening region of the first barrier layer BL1 may be greater than the widths A2 and A4 of the opening region of the second barrier layer BL2, respectively. Therefore, the barrier layer BL may generally be a multilayer stack including the first barrier layer BL1 and the second barrier layer BL2 extending throughout the entire barrier layer BL except for the opening region. In some embodiments, at the opening region, the opening region in the first barrier layer BL1 may be greater than the opening region in the second barrier layer BL2 to produce a step-down configuration.

[0140] As another example, the size of the opening area of ​​the first barrier layer BL1 and the size of the opening area of ​​the second barrier layer BL2 may be the same.

[0141] In other words, the widths A1 and A3 of the opening area of ​​the first barrier layer BL1 may be the same as the widths A2 and A4 of the opening area of ​​the second barrier layer BL2 , respectively.

[0142] exist Fig.12 In the description, the width of the opening area is described with respect to the second direction SD, but is not limited thereto and may be equally applicable to the width in the first direction FD or the width in any direction on a plane defined by the first direction FD and the second direction SD.

[0143] Fig.13 is a cross-sectional view illustrating a structure of a display device according to an embodiment of the present disclosure.

[0144] Reference Fig.13 The sub-pixel may include an insulating layer INS in a multi-layer stack, a first electrode layer AND on the insulating layer INS, a dam layer BNK on the insulating layer INS and the first electrode layer AND, a light-emitting layer EL on the first electrode layer AND and the dam layer BNK, a second electrode layer CAT on the light-emitting layer EL, and a passivation layer PAS on the second electrode layer CAT.

[0145] Fig.13 The sub-pixel may further include a blocking layer BL on the non-opening region of the insulating layer INS and the bank layer.

[0146] The barrier layer BL may include a first barrier layer BL1 on the insulating layer INS and a second barrier layer BL2 on the first barrier layer.

[0147] exist Fig.13 In the sub-pixel, the lens unit LEN may be disposed to correspond to the opening area of ​​the blocking layer BL.

[0148] Fig.13 The sub-pixel may include an encapsulation layer PCL between the passivation layer PAS and the first barrier layer BL1.

[0149] Fig.13 The sub-pixel may include a buffer layer BUF between the lens unit LEN and the encapsulation layer PCL.

[0150] The insulating layer INS may be multi-layered.

[0151] For example, the insulating layer INS may be a double layer, or may include more or fewer layers.

[0152] The encapsulation layer PCL may be multi-layered.

[0153] For example, the encapsulation layer PCL may be a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer, or may include more or fewer layers.The sub-pixels are generally operable to emit light represented by arrows L1 to L5.

[0154] The lens unit LEN may effectively extract a portion of the lights L1 , L2 , L3 , L4 , and L5 emitted from the light emitting layer EL, for example, the lights L2 and L3 .

[0155] However, some of the light L1 and L4 may not reach the lens unit LEN but may be blocked or reflected by the blocking layer BL, so that a portion of the light may not be extracted, thereby reducing the brightness output to the user.

[0156] This may be caused by the presence or absence of the barrier layer BL.

[0157] In addition, the center line G of the opening area of ​​the bank layer BNK may deviate from the center line L of the lens unit. For example, for some light L5, the center line G of the opening area of ​​the bank layer BNK may move rightward relative to the center line L of the lens unit, which enables rapid change of brightness according to the selected viewing angle mode.

[0158] Fig.14A is along Fig. 10A A cross-sectional view taken along line AA′ and line BB′.

[0159] Reference Fig.14A , Fig.14A The insulating layer INS, the first electrode layer AND, the bank layer BNK, the light emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the encapsulation layer PCL, the barrier layer BL and the buffer layer BUF of the reference Fig.13 The described insulating layer INS, first electrode layer AND, bank layer BNK, light emitting layer EL, second electrode layer CAT, passivation layer PAS, encapsulation layer PCL, barrier layer BL and buffer layer BUF are substantially the same.

[0160] The barrier layer BL may be a multi-layer.

[0161] For example, the barrier layer BL may include a first barrier layer BL1 and a second barrier layer BL2 .

[0162] At least one of the first barrier layer BL1 and the second barrier layer BL2 may be a sensor.

[0163] For example, the first barrier layer BL1 may be a sensor, and the second barrier layer BL2 may be a black matrix, but the present disclosure is not limited thereto.

[0164] Light L1 , L2 , and L3 emitted from the light emitting layer EL may be extracted through the lens unit LEN1 .

[0165] As the center line G2 of the opening region OPN1 moves in the first direction FD relative to the center line G1 of the concave portion CNC1 , the amount of light extracted from L1 having a larger or greater emission angle than L2 increases.

[0166] Specifically, as the center line G2 of the opening area OPN1 moves relative to the center line G1 of the recess CNC1 in the first direction FD, the distance from the center line G2 of the opening area OPN1 of the bank layer BNK to the inclined portion of the recess decreases, and thus the amount of light extracted such as L1 having an emission angle of 60 to 70 degrees can be increased. In other words, changing the position of the opening area OPN1 of the bank layer BNK relative to the center of the recess CNC1 changes the amount of light emitted through the opening area OPN1, because light having a specific emission angle corresponding to the offset between the opening area OPN1 and the recess CNC1 will be emitted, while light without a specific emission angle will be reflected back to the recess CNC1, such as Fig.13 When emitting light at an emission angle of 60 to 70 degrees, for example, for light L1, it is advantageous to offset the center line G2 of the opening region OPN1 relative to the center line G1 of the recess CNC1 to assist in capturing or emitting additional light L1.

[0167] Fig. 14B is along Fig. 10B A cross-sectional view taken along line CC′ and line DD′.

[0168] Reference Fig. 14B , Fig. 14B The insulating layer INS, the first electrode layer AND, the bank layer BNK, the light emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the encapsulation layer PCL, the barrier layer BL and the buffer layer BUF of the reference Fig.13 The described insulating layer INS, first electrode layer AND, bank layer BNK, light emitting layer EL, second electrode layer CAT, passivation layer PAS, encapsulation layer PCL, barrier layer BL and buffer layer BUF are substantially the same.

[0169] also, Fig. 14B The barrier layer BL can be similar to the reference Fig.14A A plurality of layers of barrier layer BL are described.

[0170] Light L1 , L2 , and L3 emitted from the light emitting layer EL may be extracted through the lens unit LEN2 .

[0171] As the center line G2 of the opening region OPN2 moves in the first direction FD relative to the center line G1 of the concave portion CNC2, the amount of light extracted from L1 having a larger emission angle than L3 increases.

[0172] Specifically, since the center line G2 of the opening region OPN2 moves relative to the center line G1 of the concave portion CNC2 in the first direction FD, the distance from the center line of the opening region OPN2 of the bank layer BNK to the upper surface of the inclined portion of the concave portion decreases. Fig.14A For the same or similar reasons described, the amount of light extracted can be increased if L1 has an emission angle of 60 to 70 degrees.

[0173] Fig.15 It is shown Fig. 14B An enlarged cross-sectional view of regions Y1 and Y2.

[0174] Reference Fig.15 , Fig.15 The insulating layer INS, the first electrode layer AND, the bank layer BNK, the light emitting layer EL, the second electrode layer CAT and the passivation layer PAS can be the same as those of the reference Fig.13 The described insulating layer INS, the first electrode layer AND, the bank layer BNK, the light emitting layer EL, the second electrode layer CAT and the passivation layer PAS are substantially the same.

[0175] The insulating layer INS may comprise at least one recess CNC, and the other layers on the insulating layer INS may generally have a similar shape and arrangement, which means that they have a concave arrangement following the recess CNC of the insulating layer INS.

[0176] The concave portion CNC may include a flat portion FLT and an inclined portion SLO surrounding the flat portion FLT.

[0177] The inclined portion SLO may include a first inclined portion SLO1 and a second inclined portion SLO2 facing an upper portion of the sub-pixel and the first inclined portion SLO1.

[0178] When measured parallel to the upper surface of the subpixel, a distance from a center line G2 of the opening area OPN2 of the bank layer BNK to the upper surface of the first slanted portion SLO1 may be different from a distance from a center line G2 of the opening area OPN2 of the bank layer BNK to the upper surface of the second slanted portion SLO2.

[0179] This may be caused by the difference in thickness of the bank BNK on certain sides of the portion of the sub-pixel. Specifically, the distance W1 from the upper surface or front surface of the first inclined portion SLO1 of the insulating layer INS to the upper surface or front surface of the inclined portion of the bank layer BNK covering the first inclined portion SLO1 (i.e., the surface of the bank layer BNK that is bonded to the light-emitting layer EL on the left side of the sub-pixel) may be greater than the distance W2 from the upper surface or front surface of the second inclined portion SLO2 of the insulating layer INS to the upper surface or front surface of the inclined portion of the bank layer BNK covering the second inclined portion SLO2 of the recess (i.e., the surface of the bank layer BNK that is bonded to the light-emitting layer EL on the right side of the sub-pixel). The difference in distances W1, W2 can be achieved by changing the thickness of the bank layer BNK between the first electrode layer AND and the light-emitting layer EL.

[0180] As described above, by designing the distance between W1 and W2 to be different, the center point (line) of the concave portion CNC and the center point (line) of the opening area OPN of the bank layer BNK may not overlap or may be offset from each other, thereby improving light extraction efficiency.

[0181] The lower limits of W1 and W2 are not particularly limited, and W1 or W2 may be zero.

[0182] The height H1 of the inclined portions SLO1 , SLO2 of the concave portion CNC (or the depth of the concave portion CNC) may be 0.7 um or more, but is not limited thereto.

[0183] When the angle between the virtual surface (line) of the flat portion FLT including the recess CNC and the virtual surface (line) including the inclined portion SLO is A1, the height H1 of the inclined portions SLO1 and SLO2 refers to the value obtained by multiplying the length of the inclined portion SLO of the recess CNC by sin(A1).

[0184] In other words, the formula H1=length of inclined portion SLO*sin(A1) holds true.

[0185] The angle A1 may be 27 degrees or more and less than 80 degrees.

[0186] When the angle A1 is less than 27 degrees, light emitted from the light emitting layer EL may not reach the first electrode layer disposed on the inclined portion SLO and may be transferred to another adjacent sub-pixel causing color mixing, or may be trapped in the display device 1000 and cannot be extracted to the outside.

[0187] When the angle A1 exceeds 80 degrees, disconnection may occur in a component such as the first electrode layer disposed on the inclined portion of the insulating layer INS.

[0188] Fig.16 It is shown Fig.13 A cross-sectional view of the light path of the left view.

[0189] Reference Fig.16 , the lights L1 and L2 emitted from the light emitting layer EL may be extracted through the lens unit LEN.

[0190] L1 has an emission angle A2, and L2 has an emission angle B.

[0191] In order not to interfere with the paths when the lights L1 and L2 are extracted through the lens unit LEN, it is preferable to satisfy both the following equations (1) and (2).

[0192] Formula (1)

[0193] R2≥D*tan(A2)-M

[0194] Formula (2)

[0195] (R1-M) / (Dd)=R2-L) / D=tan(B)

[0196] In formula (1) and formula (2),

[0197] R1 and R2 are half of the diameter of the opening area of ​​the first barrier layer BL1 and half of the diameter of the opening area of ​​the second barrier layer BL2, respectively.

[0198] D is the distance between the upper surface of the passivation layer PAS and the lower surface of the lens unit LEN.

[0199] d is the distance between the upper surface of the first barrier layer BL1 and the lower surface of the second barrier layer BL2.

[0200] M is half the width of the flat portion of the passivation layer PAS.

[0201] A2 is the emission angle of L1, and B is the emission angle of L2.

[0202] When both equations (1) and (2) are satisfied, the blocking layers BL1 and BL2 do not overlap the flat portion of the passivation layer PAS, so that light can be effectively extracted through the lens unit LEN without interfering with the paths of the lights L1 and L2.

[0203] Fig.17 It is shown Fig. 14B The right side view is a cross-sectional diagram of the light travel path.

[0204] Reference Fig.17 , the lights L1 and L2 emitted from the light emitting layer EL may be extracted by the second lens unit LEN2.

[0205] L1 has an emission angle A3, and L2 has an emission angle C.

[0206] In order not to interfere with the paths when the lights L1 and L2 are extracted through the second lens unit LEN2, all of the following equations (3), (4), and (5) are preferably satisfied.

[0207] Formula (3)

[0208] R2≥D*tan(A3)-M

[0209] Formula (4)

[0210] R2≥M+N+H*tan(90-T)

[0211] Formula (5)

[0212] R1=R2

[0213] In formula (3), formula (4) and formula (5),

[0214] R1 and R2 are half of the diameter of the opening area of ​​the first barrier layer BL1 and half of the diameter of the opening area of ​​the second barrier layer BL2, respectively.

[0215] D is a distance between an upper surface of the passivation layer PAS and a lower surface of the second lens unit LEN2.

[0216] M is half the width of the flat portion of the passivation layer PAS.

[0217] N is a value obtained by subtracting M from the distance N+M from the center line L of the second lens unit LEN2 to the boundary of the flat portion of the concave portion.

[0218] A3 is the emission angle of L1, and C is the emission angle of L2.

[0219] When equations (3), (4), and (5) are all satisfied, the blocking layers BL1 and BL2 do not overlap the flat portion FLT of the concave portion CNC2, so that light can be effectively extracted through the second lens unit LEN2 without interfering with the paths of the lights L1 and L2.

[0220] Fig.18 It is shown Fig. 14B A cross-sectional view of the light path of the left view.

[0221] Reference Fig.18 , the lights L1 and L2 emitted from the light emitting layer EL may be extracted by the second lens unit LEN2.

[0222] L1 has an emission angle A4, and L3 has an emission angle C.

[0223] In order not to interfere with the paths of the lights L1 and L3 in the process of extracting the lights L1 and L3 through the second lens unit LEN2, all of the following equations (6), (7), and (8) are preferably satisfied.

[0224] Formula (6)

[0225] R2≥D*tan(A4)-M1

[0226] Formula (7)

[0227] R2≥M2+N+H*tan(90-T)

[0228] Formula (8)

[0229] R1=R2

[0230] In formula (6), formula (7) and formula (8),

[0231] R1 and R2 are half of the diameter of the opening area of ​​the first barrier layer BL1 and half of the diameter of the opening area of ​​the second barrier layer BL2, respectively.

[0232] D is a distance between an upper surface of the passivation layer PAS and a lower surface of the second lens unit LEN2.

[0233] M1 and M2 are distances from the center line L of the second lens unit LEN2 to the boundary of the flat portion of the passivation layer PAS, the shorter distance is M1, and the longer distance is M2.

[0234] N is a value obtained by subtracting M2 from the distance N+M2 from the center line L of the second lens unit LEN2 to the boundary of the flat portion of the concave portion.

[0235] A4 is the emission angle of L1, and C is the emission angle of L3.

[0236] When Equations 6, 7, and 8 are all satisfied, the blocking layers BL1 and BL2 do not overlap the flat portion FLT of the concave portion CNC2, so that light can be effectively extracted through the second lens unit LEN2 without interfering with the paths of the lights L1 and L3.

[0237] Fig.19 is a view schematically showing changes in viewing angle brightness in the up-down direction and the left-right direction when the OSM structure is applied to the wide viewing angle mode and the narrow viewing angle mode of the SPM.

[0238] Reference Fig.19 , is a diagram schematically showing the brightness change of left and right viewing angles in a wide viewing angle mode, is a view schematically showing the up-down (or left-right) viewing angle brightness change in the narrow viewing angle mode, and <c>Schematically shows the change in brightness at upper and lower viewing angles in the wide viewing angle mode.

[0239] < / c> 、 and <c>The viewing angle brightness variation when the SPM and OSM structures are combined compared to when only SPM is applied is shown.

[0240] In the present disclosure, SPM refers to a system that can switch between a wide viewing angle mode and a narrow viewing angle mode. In order to implement the SPM technology, preferably, the opening area of ​​the bank layer includes a plurality of first opening areas and a plurality of second opening areas narrower than the first opening areas, and includes a plurality of first lens units corresponding to the plurality of first opening areas and a second lens unit corresponding to the plurality of second opening areas.

[0241] In the present disclosure, OSM refers to a case where an insulating layer includes a flat portion and a concave portion formed by an inclined portion surrounding the flat portion.

[0242] Reference< / c> Fig.19 target , when OSM is applied to SPM in a wide viewing angle mode (SPM+OSM), the brightness variation according to the viewing angle can be reduced due to the focusing effect of OSM.

[0243] Reference Fig.19 target , when OSM is applied to SPM in the narrow viewing angle mode (SPM+OSM), the brightness variation according to the viewing angle can be reduced due to the focusing effect of OSM.

[0244] Reference Fig.19 of <c>, when the optical axis is corrected by moving the recessed portion in the up-down direction so that the OSM has an asymmetric separation distance, the amount (brightness) of light extracted in the upper direction can be increased.

[0245] Here, the up-down direction may be substantially the same as the above-mentioned first direction FD, and the left-right direction may be substantially the same as the above-mentioned second direction SD.

[0246] For example, in and In FIG. 1 , 0 to 90 refers to a brightness viewing angle in one direction (right) of the second direction SD. Conversely, 0 to −90 refers to a brightness viewing angle in a direction (left) opposite to one direction in the second direction SD.

[0247] exist <c>In FIG. 1 , 0 to 90 refers to a brightness viewing angle in one direction (downward) in the first direction FD. Conversely, 0 to −90 refers to a brightness viewing angle in a direction (upward) opposite to one direction in the first direction FD.

[0248] < / c> Fig. 20 : is a view schematically showing an area connected by four vertices where minimum brightness values ​​appear in an area defined in a polar coordinate system.

[0249] Reference Fig. 20 , a point in the polar coordinate system is represented by a radius r and an angle θ. r represents the distance from the pole, and θ represents the angle from the x-axis.

[0250] Here, when r has a negative value, this means that the point is away by a distance |r| in a direction opposite to the direction indicated by θ.

[0251] The definitions of the three regions shown in the polar coordinate system are shown in Table 1. The vertex in each region of Table 1 refers to the vertex at which the minimum brightness value is obtained in the corresponding region.

[0252] Table 1

[0253]

[0254]

[0255] Fig.21 It is shown Fig. 20 Graph of viewing angle brightness in the reference direction in areas A1 and A2.

[0256] exist Fig.21 In the figure, the viewing angle (degrees) corresponds to the reference Fig. 20 r describes the polar coordinate system.

[0257] Fig.21 Graphs according to whether optimization is performed when only SPM is applied to each of the A1 area reference direction viewing angle luminance and the A2 area reference direction viewing angle luminance and when both SPM and OSM are applied are shown.

[0258] Reference Fig.21 , it can be determined that, compared with applying only SPM in both the A1 area and the A2 area, when both SPM and OSM are applied and optimization is performed, the viewing angle brightness increases within the viewing angle range of 0 to 80 degrees.

[0259] The following briefly describes the implementation of the above disclosure.

[0260] A display device according to an embodiment of the present disclosure may include: an insulating layer located on a substrate and including at least one recess, the at least one recess including a flat portion in one sub-pixel and an inclined portion surrounding the flat portion; and a dyke layer located on the insulating layer and including an opening region in the sub-pixel. The opening region may be surrounded by the inclined portion. The center point of the region of the recess may not overlap with the center point of the opening region of the dyke layer.

[0261] In a display device according to an embodiment of the present disclosure, when viewed on a plane defined by a first direction and a second direction orthogonal to the first direction, a distance between two points where a virtual straight line passing through a center point of the region of the recess and parallel to the second direction intersects with a boundary of the region of the recess is longer than a distance between two points where a virtual straight line passing through a center point of the region of the recess and parallel to the first direction intersects with the boundary of the region of the recess. The direction of the straight line passing through the center point of the region of the recess and the center point of the opening region of the bank layer may be the first direction.

[0262] In a display device according to an embodiment of the present disclosure, when viewed on a plane defined by a first direction and a second direction orthogonal to the first direction, a distance between two points where a virtual straight line passing through a center point of the area of ​​the recess and parallel to the first direction intersects with a boundary of the area of ​​the recess may be the same as a distance between two points where a virtual straight line passing through a center point of the area of ​​the recess and parallel to the second direction intersects with the boundary of the area of ​​the recess. The direction of the straight line passing through the center point of the area of ​​the recess and the center point of the opening area of ​​the bank layer may be the first direction.

[0263] The display device according to an embodiment of the present disclosure may further include a plurality of barrier layers in the non-opening region of the bank layer and on the insulating layer.

[0264] In the display device according to an embodiment of the present disclosure, the blocking layer may include a first blocking layer on the insulating layer and a second blocking layer on the first blocking layer.

[0265] In the display device according to the embodiment of the present disclosure, at least one of the first barrier layer and the second barrier layer may be a sensor.

[0266] In the display device according to an embodiment of the present disclosure, an opening area of ​​the second barrier layer may be larger than an opening area of ​​the first barrier layer.

[0267] In the display device according to an embodiment of the present disclosure, the opening area of ​​the first barrier layer and the opening area of ​​the second barrier layer may have the same size.

[0268] The display device according to an embodiment of the present disclosure may further include a plurality of lens units located in a region corresponding to the concave portion.

[0269] In a display device according to an embodiment of the present disclosure, the opening area of ​​the embankment layer may include a plurality of first opening areas and a plurality of second opening areas narrower than the first opening areas, and wherein the display device also includes a plurality of first lens units corresponding to the plurality of first opening areas and a plurality of second lens units corresponding to the plurality of second opening areas.

[0270] A display device according to an embodiment of the present disclosure may include: an insulating layer, which is located on a substrate and includes at least one recess, the recess including a flat portion in a sub-pixel and an inclined portion surrounding the flat portion; and a dyke layer, which is located on the insulating layer and includes an opening area in the sub-pixel, wherein the opening area is surrounded by the inclined portion. The inclined portion of the recess may include a first inclined portion and a second inclined portion facing the upper portion of the sub-pixel and the first inclined portion horizontally. When measured parallel to the upper surface of the sub-pixel, the distance from the center line of the opening area of ​​the dyke layer to the upper surface of the first inclined portion may be different from the distance from the center line of the opening area of ​​the dyke layer to the upper surface of the second inclined portion.

[0271] The display device according to an embodiment of the present disclosure may further include a plurality of barrier layers in the non-opening region of the bank layer and on the bank layer.

[0272] In the display device according to an embodiment of the present disclosure, the barrier layer may include a first barrier layer on the bank layer and a second barrier layer on the first barrier layer.

[0273] In the display device according to the embodiment of the present disclosure, at least one of the first barrier layer and the second barrier layer may be a sensor.

[0274] In the display device according to an embodiment of the present disclosure, an opening area of ​​the second barrier layer may be larger than an opening area of ​​the first barrier layer.

[0275] In the display device according to an embodiment of the present disclosure, the opening area of ​​the first barrier layer and the opening area of ​​the second barrier layer may have the same size.

[0276] The display device according to an embodiment of the present disclosure may further include a plurality of lens units located in a region corresponding to the concave portion.

[0277] In a display device according to an embodiment of the present disclosure, the recess may include a plurality of first recesses and a plurality of second recesses narrower than the area of ​​the first recesses. The display device may also include a plurality of first lens units located in an area corresponding to the plurality of first recesses and a second lens unit located in an area corresponding to the plurality of second recesses and narrower than the area of ​​the plurality of first lens units.

[0278] The above description has been given to enable any person skilled in the art to make and use the technical ideas of the present disclosure, and the above description has been provided in the context of a specific application and its requirements. Various modifications, additions and substitutions to the described embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. The above description and accompanying drawings provide examples of the technical ideas of the present disclosure for exemplary purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the technical ideas of the present disclosure.

[0279] The various embodiments described above can be combined to provide further embodiments. Aspects of the embodiments can be modified, if necessary, to deploy the concepts of the various patents, applications, and publications to provide additional embodiments.

[0280] These and other changes may be made to the embodiments in light of the above detailed description. Generally, in the appended claims, the terms used should not be interpreted as limiting the claims to the specific embodiments disclosed in the specification and claims, but should be interpreted as including all possible embodiments and the full range of equivalents of such claims. Therefore, the claims are not limited by the present disclosure. < / c>

Claims

1. A display device, comprising: substrate; an insulating layer located on the substrate, the insulating layer comprising at least one concave portion having a center point, the at least one concave portion comprising a flat portion and an inclined portion surrounding the flat portion; a sub-pixel on the insulating layer in the at least one recess; as well as a bank layer, the bank layer being located on the insulating layer and comprising an opening area corresponding to the sub-pixel, the opening area having a center point, wherein the opening area is surrounded by the inclined portion, and The center point of the at least one recess is offset from the center point of the opening region of the bank layer.

2. The display device according to claim 1, wherein: When viewed on a plane defined by a first direction and a second direction orthogonal to the first direction, a distance between two points where a virtual straight line passing through the center point of the at least one recess and parallel to the second direction intersects with a boundary of the at least one recess is greater than a distance between two points where a virtual straight line passing through the center point of the at least one recess and parallel to the first direction intersects with the boundary of the at least one recess, and The direction of a straight line passing through the center point of the at least one recess and the center point of the opening region of the bank layer is the first direction.

3. The display device according to claim 1, wherein: When viewed on a plane defined by a first direction and a second direction orthogonal to the first direction, a distance between two points where a virtual straight line passing through the center point of the at least one recess and parallel to the first direction intersects with a boundary of the at least one recess is equal to a distance between two points where a virtual straight line passing through the center point of the at least one recess and parallel to the second direction intersects with the boundary of the at least one recess, and The direction of a straight line passing through the center point of the at least one recess and the center point of the opening region of the bank layer is the first direction. 4 . The display device according to claim 1 , further comprising a plurality of barrier layers on the insulating layer and in a region of the bank layer excluding the opening region.

5. The display device according to claim 4, wherein: The plurality of barrier layers include: a first barrier layer on the insulating layer; and A second barrier layer is located on the first barrier layer.

6. The display device according to claim 5, wherein: At least one of the first barrier layer and the second barrier layer is a sensor.

7. The display device according to claim 5, wherein: The opening area of ​​the second barrier layer is larger than the opening area of ​​the first barrier layer.

8. The display device according to claim 5, wherein: The opening area of ​​the first barrier layer and the opening area of ​​the second barrier layer have the same size. 9 . The display device according to claim 1 , further comprising a plurality of lenses on the bank layer and corresponding to the at least one recess.

10. The display device according to claim 1, wherein: The opening region of the bank layer includes a plurality of first opening regions and a plurality of second opening regions, wherein the second opening regions are narrower than the first opening regions, and The display device further includes a plurality of first lenses corresponding to the plurality of first opening areas and a plurality of second lenses corresponding to the plurality of second opening areas.

11. A display device, comprising: substrate; an insulating layer located on the substrate, the insulating layer comprising at least one concave portion, the at least one concave portion comprising a flat portion in one sub-pixel and an inclined portion surrounding the flat portion; as well as a bank layer on the insulating layer and including an opening in the sub-pixel, wherein the opening is surrounded by the inclined portion of the at least one recess, wherein the inclined portion of the recess includes a first inclined portion and a second inclined portion, and The distance from the center line of the opening of the bank layer to the upper surface of the first inclined portion is different from the distance from the center line of the opening of the bank layer to the upper surface of the second inclined portion. 12 . The display device of claim 11 , further comprising a plurality of barrier layers on the bank layer and in a region of the bank layer that does not include the opening.

13. The display device according to claim 12, wherein: The plurality of barrier layers include: a first barrier layer on the bank layer; and A second barrier layer is located on the first barrier layer.

14. The display device according to claim 13, wherein: At least one of the first barrier layer and the second barrier layer is a sensor.

15. The display device according to claim 13, wherein: The opening of the second barrier layer is larger than the opening of the first barrier layer.

16. The display device according to claim 13, wherein: The opening of the first barrier layer and the opening of the second barrier layer have the same size.

17. A display device, comprising: substrate; an insulating layer on the substrate, the insulating layer comprising at least one recess; a sub-pixel on the insulating layer in the at least one recess; a bank layer, the bank layer being located on the insulating layer and comprising an opening corresponding to the sub-pixel; as well as At least one lens is located on the bank layer and corresponds to the at least one recess.

18. The display device according to claim 17, wherein: The at least one recess includes a plurality of first recesses and a plurality of second recesses, wherein the second recesses are narrower than the first recesses, and The at least one lens further comprises a plurality of first lenses located in regions corresponding to the plurality of first recesses and a plurality of second lenses located in regions corresponding to the plurality of second recesses. Wherein, the plurality of second lenses are narrower than the plurality of first lenses.

19. The display device according to claim 17, wherein: The at least one recess includes a flat portion and an inclined portion surrounding the flat portion.

20. The display device according to claim 17, further comprising a first barrier layer on the bank layer and a second barrier layer on the first barrier layer, in, The first barrier layer and the second barrier layer each have a respective hole corresponding to the opening of the bank layer, and The at least one lens is located on the second barrier layer and overlaps with corresponding holes of the first barrier layer and the second barrier layer.

21. The display device according to claim 17, wherein: A center line of the opening of the bank layer is offset from a center line of a lens corresponding to the opening among the at least one lens.

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