Display device

Abstract

To provide a display device for improving light extraction efficiency.SOLUTION: There is provided a display device that includes a board, an insulation layer that is positioned on the board and includes at least one recessed section having a center point while at least one recessed section includes a flat section and a sloped section surrounding the flat section, and a bank layer that is positioned on one sub-pixel on the insulation layer within at least one recessed section and on the insulation layer, and includes an opening area corresponding to the sub-pixel while the opening area includes a center point, the opening area is surrounded by the sloped section, and the center point of at least one recessed section deviates from the center point of the opening area of the bank layer so as to improve light extraction efficiency, and hence achieve low-power drive with high-luminance characteristics.SELECTED DRAWING: Figure 9a

Description

[Technical field]

[0001] The embodiments of the present disclosure relate to a display device. [Background technology]

[0002] 2. Description of the Related Art With the development of an information society, the demand for display devices capable of displaying various types of images is increasing. In recent years, various display devices such as liquid crystal display devices, plasma display devices, and organic light emitting display devices have been utilized.

[0003] 2. Description of the Related Art Display devices that display various information on a screen are a core technology in the information and communication technology era, and play a role in displaying various information on a display area.

[0004] Display devices are required to have excellent display quality and luminous efficiency, but there have been problems in developing display devices having such characteristics. For example, a display device having excellent display quality may have low luminous efficiency and consume a large amount of power. Furthermore, attempts to manufacture a light emitting device that improves luminous efficiency and reduces power consumption have faced many difficulties. Therefore, it is necessary to develop a display device that overcomes these shortcomings. Summary of the Invention [Problem to be solved by the invention]

[0005] As technology advances, luminous efficiency becomes more and more important as display devices consume less power, and in some embodiments, luminous efficiency becomes more important as display devices are implemented in limited power supply environments.

[0006] The luminous efficiency of a display device can be determined by the light-emitting element included in the display device. A display device including a light-emitting element with excellent luminous efficiency may have excellent luminous efficiency. Therefore, increasing the luminous efficiency of the light-emitting element can be considered as a method for increasing the luminous efficiency of the display device. However, increasing the luminous efficiency of the light-emitting element is difficult, and previous attempts have generally been insufficient or have been ineffective solutions.

[0007] Embodiments of the present disclosure can provide a display device with improved light extraction efficiency.

[0008] The embodiments of the present disclosure can provide a display device that can be driven with low power consumption due to its high brightness characteristics. [Means for solving the problem]

[0009] An embodiment of the present disclosure can provide a display device including a substrate, at least one recess located on the substrate and having a center point, the at least one recess including a flat portion and an inclined portion surrounding the flat portion, a subpixel on the insulating layer within the at least one recess, and an opening region located on the insulating layer and corresponding to the subpixel, the opening region including a bank layer having a center point, the opening region being surrounded by the inclined portion, and the center point of the at least one recess being offset from the center point of the opening region of the bank layer.

[0010] An embodiment of the present disclosure can provide a display device comprising: a substrate; an insulating layer located on the substrate and including at least one recess consisting of a flat portion within a subpixel and a sloped portion surrounding the flat portion; and a bank layer located on the insulating layer and including an opening within the subpixel, the opening being surrounded by the sloped portion of the at least one recess, the sloped portion of the recess including a first sloped portion and a second sloped portion, and the distance from the center line of the opening in the bank layer to the top surface of the first sloped portion is different from the distance from the center line of the opening in the bank layer to the top surface of the second sloped portion.

[0011] An embodiment of the present disclosure may provide a display device that includes a substrate, an insulating layer on the substrate including at least one recess, subpixels on the insulating layer in the at least one recess, a bank layer located on the insulating layer and including openings corresponding to the subpixels, and at least one lens on the bank layer corresponding to the at least one recess. Effect of the Invention

[0012] According to an embodiment of the present disclosure, a display device capable of improving light extraction efficiency can be provided.

[0013] According to the embodiment of the present disclosure, it is possible to provide a display device that can be driven with low power consumption due to its high brightness characteristics. [Brief description of the drawings]

[0014] [Figure 1a] FIG. 13 is a plan view of an example according to an embodiment of the present disclosure, in a narrow viewing angle mode among switchable privacy modes. [Figure 1b] FIG. 13 is a plan view of another example according to an embodiment of the present disclosure, in a wide viewing angle mode among switchable privacy modes. [Diagram 2] FIG. 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. [Diagram 3] FIG. 2 is a plan view showing sub-pixels arranged in an active area of ​​a display device according to another embodiment of the present disclosure. [Figure 4] FIG. 3 is an enlarged plan view of a PG1 region in FIG. [Diagram 5] FIG. 4 is an enlarged plan view of a PG2 region in FIG. [Figure 6] FIG. 2 is a plan view showing an operation method of a display device according to an embodiment of the present disclosure in a mode-switchable privacy mode. [Figure 7a] FIG. 2 is a perspective view illustrating a first lens of the display device according to the embodiment of the present disclosure. [Figure 7b] FIG. 2 is a perspective view showing a second lens of the display device according to the embodiment of the present disclosure. [Figure 8a] FIG. 6 is an enlarged plan view of an embodiment of SP1 in FIG. 5. [Figure 8b] FIG. 6 is an enlarged plan view of an embodiment of SP2 in FIG. 5. [Figure 9a] FIG. 6 is an enlarged plan view of another embodiment of SP1 in FIG. 5. [Figure 9b]It is an enlarged plan view of another embodiment of SP2 in FIG. 5. [Figure 10a] It is an enlarged plan view of still another embodiment of SP1 in FIG. 5. [Figure 10b] It is an enlarged plan view of still another embodiment of SP2 in FIG. 5. [Figure 11] It is a plan view showing a barrier layer of a display device according to an embodiment of the present disclosure. [Figure 12] It is a cross-sectional view taken along E-E' in FIG. 11. [Figure 13] It is a cross-sectional view showing the structure of a display device according to an embodiment of the present disclosure. [Figure 14a] It is a cross-sectional view taken along A-A' and B-B' in FIG. 10a, respectively. [Figure 14b] It is a cross-sectional view taken along C-C' and D-D' in FIG. 10b, respectively. [Figure 15] It is an enlarged cross-sectional view of Y1 and Y2 in FIG. 14b. [Figure 16] It is a cross-sectional view showing the light movement path in the left figure of FIG. 13. [Figure 17] It is a cross-sectional view showing the light movement path in the right figure of FIG. 14b. [Figure 18] It is a cross-sectional view showing the light movement path in the left figure of FIG. 14b. [Figure 19] It is a schematic diagram showing the change in the viewing angle luminance in the vertical and horizontal directions when the OSM structure is applied to the wide viewing angle mode and the narrow viewing angle mode of the SPM. [Figure 20] It is a schematic diagram showing a region connecting four vertices where the minimum luminance value appears within a region defined in a polar coordinate system. [Figure 21] It is a graph showing the viewing angle luminance in the reference direction of regions A1 and A2 in FIG. 20.

Mode for Carrying Out the Invention

[0015] Some embodiments of the present disclosure will be described in detail below with reference to the exemplary drawings. When adding reference symbols to components in each drawing, the same symbols can be attached to the same components as much as possible even if they are displayed on different drawings. In describing the present invention, if a specific description of a related known configuration or function is determined to make the gist of the present invention unclear, the detailed description can be omitted. When "includes," "has," "performed," and the like are used in this specification, other parts may be added unless "only" is used. When a component is expressed as a singular number, it may include a case where a plurality is included unless otherwise explicitly stated.

[0016] In addition, in describing components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. are used. These terms are used to distinguish the components from other components, and do not limit the essence, order, procedure, number, etc. of the components.

[0017] In describing the positional relationship of components, when two or more components are described as being "coupled," "coupled," or "connected," it should be understood that the two or more components may be directly "coupled," "coupled," or "connected," but that the two or more components may also be "coupled," "coupled," or "connected" through an additional "intervening" component. Here, the additional component may be included in one or more of the two or more components that are "coupled," "coupled," or "connected" to each other.

[0018] In describing a temporal sequence of components, methods of operation, methods of production, etc., when the temporal or chronological sequence is described using, for example, "after," "following," "after," or "before," this can include cases where the sequence is not consecutive, unless "immediately" or "directly" is used.

[0019] On the other hand, when referring to numerical values ​​or corresponding information (e.g., levels, etc.) for components, even if there is no explicit mention otherwise, the numerical values ​​or corresponding information can be interpreted as including an error range that may arise due to various factors (e.g., process factors, internal or external impacts, noise, etc.).

[0020] Various embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0021] 1a and 1b are examples according to one embodiment of the present disclosure, in which a display device 1000 with a switchable privacy mode is installed in front of the passenger seat or on the dashboard in front of the passenger seat, and are plan views of the narrow viewing angle mode and the wide viewing angle mode of the switchable privacy mode, respectively.

[0022] As shown in Figures 1a and 1b, a display device 1000 capable of switching between a wide viewing angle mode and a narrow viewing angle mode can be provided in the dashboard or an interior part in front of the passenger seat of an automobile.

[0023] However, the location where the display device 1000 is installed is not limited to the front of the passenger seat, but can be placed in various locations such as in front of the driver's seat, behind the passenger seat, or behind the driver's seat, and the location where it is installed is not limited to an automobile, and can be applied to all locations where privacy protection is required, such as personal mobile phones, computers, etc.

[0024] As shown in FIG. 1a, while in the narrow viewing angle mode, the display device 1000 presents an image to the passenger having a luminance of 1% or more, while presenting an image to the driver having a luminance of less than 1%.

[0025] In other words, only the passenger sitting in the passenger seat has a view, and the passenger sitting in the driver's seat does not have a view, so privacy can be protected for the passenger sitting in the passenger seat.

[0026] As shown in FIG. 1b, while in wide viewing angle mode, the display device 1000 provides an image that can be shared by both the passenger and the driver by providing both an image with a luminance of 1% or greater.

[0027] In other words, in the wide viewing angle mode, visibility can be ensured not only for the passenger in the passenger seat, but also for the passenger in the driver's seat.

[0028] FIG. 2 is a plan view showing a partial region of a subpixel arranged in an active area of ​​a display device according to an embodiment of the present disclosure.

[0029] Referring to FIG. 2, pixels arranged in an active area of ​​a display device 1000 may include sub-pixels with different colors for color implementation of an image.

[0030] The sub-pixels may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0031] Although each of the sub-pixels may further include a white sub-pixel, FIG. 2 illustrates an example in which the sub-pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0032] And each of the sub-pixels can include a pixel circuit and a light emitting element.

[0033] By designing the sizes and arrangements of the sub-pixels included in the first pixel group PG1 among the sub-pixels arranged in the active area of ​​the display device 1000 of Figure 2 to be different, it is possible to implement a switchable privacy mode system that can switch between a wide viewing angle mode and a narrow viewing angle mode.

[0034] However, the size and arrangement procedure of sub-pixels for implementing a mode-switchable privacy mode is not limited to this, and in 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 used as an example.

[0035] FIG. 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.

[0036] 3, the display device 1000 of FIG. 2 may further include a recess, which will be described later with reference to FIG.

[0037] When the display device 1000 further includes a recess, the light efficiency through the external light extraction efficiency can be increased, and the viewing angle brightness can be improved.

[0038] FIG. 4 is an enlarged plan view of the PG1 region in FIG.

[0039] 4, the first pixel group PG1 may include a plurality of first sub-pixels SP1 and a plurality of second sub-pixels SP2. Although only one first sub-pixel SP1 and one second sub-pixel SP2 are labeled with reference numerals in FIG. 4, it should be understood that the first sub-pixel SP1 and the second sub-pixel SP2 having similar shapes and arrangements to the SP1 and SP2 labeled with reference numerals have the same or similar features.

[0040] The first sub-pixel SP1 and the second sub-pixel SP2 may include aperture regions OPN1 and OPN2.

[0041] The opening regions OPN1 and OPN2 can be referred to as a first opening region OPN1 and a second opening region OPN2, respectively.

[0042] The aperture regions OPN1 and OPN2 can define the light emitting regions of the sub-pixels SP1 and SP2.

[0043] The light emitting areas of the subpixels SP1, SP2 may be substantially the same as the aperture areas OPN1, OPN2. As shown in Figure 2, the aperture area OPN1 of the first subpixel SP1 is generally larger than the aperture area OPN2 of the second subpixel SP2, and the first subpixel SP1 is larger than the second subpixel SP2.

[0044] In the present disclosure, substantially the same can generally mean a degree of sameness, taking into consideration small differences due to process errors or manufacturing tolerances.

[0045] Each of the sub-pixels SP1 and SP2 can include a lens portion LEN1 and LEN2 corresponding to the aperture region OPN1 and OPN2.

[0046] The lens portions LEN1 and LEN2 are for improving light efficiency by changing the optical path of the light emitted from the opening regions OPN1 and OPN2, and are located to correspond to the opening regions OPN1 and OPN2, and their shapes can correspond to the shapes of the opening regions OPN1 and OPN2, but are not necessarily limited to the shapes of the opening regions and can have various shapes. For example, in Fig. 4, the lens portions LEN1 and LEN2 can overlap while completely covering the opening regions OPN1 and OPN2, but generally have a shape (circular or elliptical) different from the shape (rectangle or square) of the opening regions OPN1 and OPN2 and have a larger size than the opening regions OPN1 and OPN2.

[0047] Some of the sub-pixels SP1, SP2 can emit light of different colors.

[0048] 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 light having red, green, and blue colors, respectively.

[0049] 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 light having red, green, and blue colors, respectively.

[0050] The layout of the subpixels SP1, SP2, red subpixel R, green subpixel G, and blue subpixel B as shown in the plan view of FIG. 4 is a non-limiting example and is not necessarily limited to this layout, and various combinations of layouts are possible.

[0051] Sub-pixels emitting different colors of light may include aperture regions having different areas.

[0052] As an example, the area of ​​the opening region that emits blue light may be the largest, and the area of ​​the opening region that emits red light may be the smallest.

[0053] This is because the device characteristics of the light emitting elements included in the sub-pixels emitting light of different colors may be different from each other.

[0054] However, this is not necessarily limited to this, and the areas of the open regions OPN1 and OPN2 may be the same regardless of the color as shown in the plan view of FIG.

[0055] FIG. 5 is an enlarged plan view of the PG2 region in FIG.

[0056] 5, a display device according to an embodiment of the present disclosure may further include recesses CNC1 and CNC2 in the sub-pixels SP1 and SP2 of FIG.

[0057] The recesses CNC1 and CNC2 may be referred to as the first recess CNC1 and the second recess CNC2, respectively. In one embodiment, the first recess CNC1 and the second recess CNC2 are depressions, cavities, openings, or other similar structures on the surface of the display device 1000. The width of the second recess CNC2 may be smaller than the width of the first recess CNC1.

[0058] A light emitting element that emits light may be located inside the first recess CNC1 and the second recess CNC2.

[0059] The lens portions LEN1 and LEN2 can be positioned corresponding to the first recess CNC1 and the second recess CNC2.

[0060] Specifically, the first lens portion LEN1 may be located corresponding to the first recess CNC1, and the second lens portion LEN2 may be located corresponding to the second recess CNC2. As shown, the size of the recesses CNC1, CNC2 may be larger than the size of the corresponding opening areas OPN1, OPN2 in general, but may be smaller than the size of the lens portions LEN1, LEN2, so that the lens portions LEN1, LEN2 may cover the first recess CNC1, the second recess CNC2, and overlap with the first recess CNC1, the second recess CNC2. Many other configurations are possible, and the above content is merely a non-limiting example.

[0061] FIG. 6 is a plan view illustrating an operation mode of a mode-switchable display device that can be switched between a wide viewing angle mode and a narrow viewing angle mode according to an embodiment of the present disclosure.

[0062] Specifically, FIG. 6 is a plan view showing the operation of the display device of FIG. 4 and FIG.

[0063] Referring to FIG. 4 and FIG. 6, a wide viewing angle mode and a narrow viewing angle mode can be switched according to the user's convenience.

[0064] In the wide viewing angle mode, in order to ensure a wide viewing angle, light may be emitted from the light emitting region of the first opening region OPN1 having a wide area, and light may not be emitted from the light emitting region of the second opening region OPN2 having a narrower area than the first opening region OPN1. This can be equivalent to the light emitting element of the first sub-pixel SP1 being operated to emit light through the first opening region OPN1, and the light emitting element of the second sub-pixel SP2 being turned off or not operated to not emit light through the second opening region OPN2.

[0065] In the narrow viewing angle mode, due to the narrow viewing angle, light may not be emitted (OFF) from the light emitting region of the first opening region OPN1 having a large area, and light may be emitted from the light emitting region of the second opening region OPN2 having a smaller area than the first opening region OPN1. Therefore, the narrow viewing angle mode is generally the opposite of the wide viewing angle mode.

[0066] When the display device 1000 is provided in front of the passenger seat, in the wide viewing angle mode, visibility can be ensured not only for the passenger sitting in the passenger seat, but also for the passenger sitting in the driver's seat.

[0067] In addition, in the narrow viewing angle mode, only the passenger in the passenger seat has a view, and the passenger in the driver's seat has no view, so privacy can be protected for the passenger in the passenger seat and distraction of the driver can be reduced or avoided.

[0068] 7a and 7b are perspective views respectively showing a first lens unit LEN1 and a second lens unit LEN2 of a display device according to an embodiment of the present disclosure.

[0069] 7a, the first lens portion LEN1 may be semi-cylindrical having a diameter or width C1 in a first direction FD, a diameter or width C2 in a second direction SD, and a height in a third direction TD. In one embodiment, the semi-cylindrical shape of the first lens portion LEN1 may correspond to a shape of a cylinder cut in half vertically, i.e., in the longest direction, along an axis passing through the center of the cylinder.

[0070] The first lens portion LEN1 may have a diameter C2 in the second direction SD greater than the diameter C1 in the first direction FD, corresponding to the generally rectangular shape of the first aperture region OPN1.

[0071] Although the shape of the first lens portion LEN1 in FIG. 7a is semi-cylindrical, this is merely an example and is not necessarily limited to such a shape, and various shapes are possible depending on the shape of the first aperture region OPN1 of the first sub-pixel SP1.

[0072] As an example, the height C3 in the third direction TD may be half the diameter C1 in the first direction FD, but is not necessarily limited to this and may be greater or smaller than half the diameter C1 in the first direction FD.

[0073] Referring to FIG. 7b, the second lens portion LEN2 may be hemispherical 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.

[0074] The diameter S2 in the second direction SD and the diameter S1 in the first direction FD are generally the same, and the second lens portion LEN2 may have a hemispherical shape that roughly corresponds to the shape of the circular second aperture region OPN2. However, other configurations are contemplated. Although the shape of the second lens portion LEN2 in FIG. 7b is hemispherical, this is merely an example and is not necessarily limited to such a shape, and various shapes are possible depending on the shape of the second aperture region OPN2 of the second subpixel SP2.

[0075] As an example, the height S3 in the third direction TD may be half the diameter S1 in the first direction FD, but is not necessarily limited thereto, and may be greater or smaller than half the diameter S1 in the first direction FD. In one embodiment, the shapes of the first and second aperture regions OPN1 and OPN2 and the optical properties of the first and second lens portions LEN1 and LEN2 all help to enable the wide and narrow viewing angle modes. For example, a wider or longer first aperture region OPN1 and a correspondingly longer first lens portion LEN1 enable a wider light distribution. A smaller and narrower second aperture region OPN2 generates more light, which is more concentrated by the hemispherical shape of the second lens portion LEN2 to generate light in a narrower output range.

[0076] 8a and 8b are enlarged plan views of one embodiment of the sub-pixels SP1 and SP2 of FIG.

[0077] In FIGS. 8a and 8b, the first and second lens portions (not shown) are omitted to avoid obscuring the details of the first and second sub-pixels SP1 and SP2.

[0078] Referring to FIG. 8a, the first subpixel SP1 may include a first opening region OPN1 penetrating the bank layer, a first recess CNC1 surrounding the first opening region OPN1, and a barrier layer BL located in a non-opening region of the bank layer and on the insulating layer.

[0079] In the first subpixel SP1 of Fig. 8a, the center point G1 of the first recess CNC1 and the center point G2 of the first opening region OPN1 may overlap. In one embodiment, the center points G1 and G2 are directly above each other, i.e., the center points G1 and G2 are aligned with and centrally located relative to the first subpixel SP1.

[0080] In this specification, center points G1 and G2 may refer to the geometric center of an area having any size and shape in a planar view defined by a first direction FD and a second direction SD perpendicular to the first direction FD.

[0081] The geometric center may be located not only inside the region, but also outside the region, or on the boundary of the region.

[0082] As an example, the center point G2 of the first opening region OPN1 in FIG. 8a may refer to the intersection of two diagonals connecting opposite vertices of the first opening region.

[0083] At this time, the center point G2 of the first opening region OPN1 is located inside the first opening region OPN1.

[0084] As an example, the center point G1 of the first recess CNC1 in FIG. 8a may refer to the intersection of two diagonals connecting opposite vertices of an imaginary rectangle inscribed in the first recess CNC1.

[0085] At this time, the center point G1 of the first recess CNC1 is located inside the region of the first recess CNC1.

[0086] Referring to FIG. 8b, the center point G1 of the second recess CNC2 and the center point G2 of the second opening region OPN2 may overlap, as in the second subpixel SP2, and may generally have the same arrangement as the center points G1, G2 shown in FIG. 8a.

[0087] The barrier layer BL of FIG. 8b may be substantially identical to the barrier layer BL described in FIG. 8a.

[0088] 9a and 9b are enlarged plan views of another embodiment of the sub-pixels SP1, SP2 of FIG.

[0089] 9a and 9b, the first and second lens portions (not shown) are similarly omitted.

[0090] The first opening region OPN1, the second opening region OPN2, the first recess CNC1, the second recess CNC2 and the barrier layer BL in Figures 9a and 9b referring to Figure 5 may be substantially identical to the first opening region OPN1, the second opening region OPN2, the first recess CNC1, the second recess CNC2 and the barrier layer BL described in Figures 8a and 8b.

[0091] Referring to FIG. 9a, in the first sub-pixel SP1, the center point G1 of the first recess CNC1 and the center point G2 of the first opening region OPN1 do not have to overlap.

[0092] Referring to FIG. 9b, in the second sub-pixel SP2, the center point G1 of the second recess CNC2 and the center point G2 of the second opening region OPN2 do not have to overlap.

[0093] As shown in Figures 9a and 9b, when the center point G1 of the first recess CNC1 and the second recess CNC2 do not overlap with the center point G2 of the first opening region OPN1 and the second opening region OPN2 in each of the sub-pixels SP1 and SP2, respectively, an asymmetric separation distance of the first recess CNC1 and the second recess CNC2 can be formed along any direction in a plan view defined by the first direction FD and the second direction SD perpendicular to the first direction FD, thereby adjusting the viewing angle according to the user's convenience.

[0094] 10a and 10b are enlarged plan views of further embodiments of the sub-pixels SP1 and SP2 of FIG.

[0095] 10a and 10b, the first and second lens portions (not shown) are similarly omitted.

[0096] The first opening region OPN1, the second opening region OPN2, the first recess CNC1, the second recess CNC2 and the barrier layer BL in Figures 10a and 10b may be substantially identical to the first opening region OPN1, the second opening region OPN2, the first recess CNC1, the second recess CNC2 and the barrier layer BL described in Figures 8a and 8b.

[0097] Referring to Figure 10a, like the first subpixel SP1, in a planar view defined by the first direction FD and the second direction SD perpendicular to the first direction FD, the distance between two points where a virtual straight line (not shown) passing through the center point G1 of the region of the first recess CNC1 and aligned with the second direction SD touches the boundary of the region of the first recess CNC1 is longer than the distance between two points where a virtual straight line (dotted arrow) passing through the center point G1 of the region of the first recess CNC1 and aligned with the first direction FD touches the boundary of the region of the first recess CNC1, and the direction of the straight line (dotted arrow) passing through the center point G1 of the region of the first recess CNC1 and the center point G2 of the first opening region OPN1 may be the first direction FD.

[0098] Referring to Figure 10b, like the second subpixel SP2, in a planar view defined by the first direction FD and the second direction SD perpendicular to the first direction FD, the distance between two points where a virtual straight line (dotted arrow) passing through the center point G1 of the region of the second recess CNC2 and aligned with the first direction FD touches the boundary of the region of the second recess CNC2 is equal to the distance between two points where a virtual straight line (not shown) passing through the center point G1 of the region of the second recess CNC2 and aligned with the second direction SD touches the boundary of the region of the second recess CNC2, and the direction of the straight line (dotted arrow) passing through the center point G1 of the region of the second recess CNC2 and the center point G2 of the second opening region OPN2 may be the first direction FD.

[0099] As shown in Figures 10a and 10b, when viewed in a planar view defined by a first direction FD and a second direction SD perpendicular to the first direction FD, when the direction of a straight line passing through the center point G1 of the first recess CNC1 and the second recess CNC2 and the center point G2 of the opening region OPN1 and OPN2 in each of the sub-pixels SP1 and SP2 is the first direction FD, an asymmetric separation distance in the first direction FD can be formed, thereby improving the viewing angle brightness in the upward or downward direction.

[0100] Preferably, in order to ensure brightness at an upward viewing angle of the display device 1000 located at a position lower than the eye level of a passenger sitting in the driver's seat, an asymmetric separation distance is formed in the first direction FD of the recess to improve the upward brightness viewing angle.

[0101] FIG. 11 is a plan view showing a barrier layer BL of a display device 1000 according to an embodiment of the present disclosure.

[0102] Referring to FIG. 11, the barrier layer BL may include a first barrier layer BL1 on an insulating layer (not shown) and a second barrier layer BL2 located on the first barrier layer in the third direction TD.

[0103] The first barrier layer BL1 and the second barrier layer BL2 in FIG. 11 may overlap each other in a plan view defined by a first direction FD and a second direction SD perpendicular to the first direction FD.

[0104] The barrier layer BL in FIG. 11 may be substantially the same as the barrier layer BL described in FIGS. 2 to 10b.

[0105] Specifically, the shape of the barrier layer BL in FIG. 11 can be applied to the barrier layer BL described with reference to FIGS. 2 to 10b.

[0106] However, the shape of the barrier layer BL is not necessarily limited to that of the barrier layer BL in FIG. 11, and the barrier layer BL can be designed in various shapes.

[0107] FIG. 12 is a cross-sectional view taken along the line EE' of FIG.

[0108] Referring to FIG. 12, the first barrier layer BL1 may have an opening region having widths of A1 and A3, and the second barrier layer BL2 may have an opening region having widths of A2 and A4.

[0109] As an example, the opening area of ​​the first barrier layer BL1 may be larger than the opening area of ​​the second barrier layer BL2.

[0110] In other words, the widths A1, A3 of the opening regions of the first barrier layer BL1 may be greater than the widths A2, A4 of the opening regions of the second barrier layer BL2, respectively. Thus, the barrier layer BL may be a multi-layer stack including first and second barrier layers BL1, BL2 that generally extend across the entire barrier layer BL except for the opening regions. To form a staircase structure in some embodiments, the opening area of ​​the first barrier layer BL1 may be greater than the opening area of ​​the second barrier layer BL2 in the opening regions.

[0111] As another example, the size of the opening region of the first barrier layer BL1 and the size of the opening region of the second barrier layer BL2 may be the same.

[0112] In other words, the widths A1 and A3 of the open regions of the first barrier layer BL1 may be the same as the widths A2 and A4 of the open regions of the second barrier layer BL2, respectively.

[0113] In Figure 12, the width of the opening area is described based on the second direction SD, but this is not limited to this and can be similarly applied to the width in the first direction FD or in any direction on a plane defined by the first direction FD and the second direction SD.

[0114] FIG. 13 is a cross-sectional view showing the structure of a display device according to an embodiment of the present disclosure.

[0115] Referring to FIG. 13, the subpixel may include, in a multi-layer stack, an insulating layer INS, a first electrode layer AND on the insulating layer INS, a bank layer BNK on the insulating layer INS and the first electrode layer AND, an emitting layer EL on the first electrode layer AND and the bank layer BNK, a second electrode layer CAT on the emitting layer EL, and a passivation layer PAS on the second electrode layer CAT.

[0116] The subpixel of FIG. 13 may further include an insulating layer INS and a barrier layer BL on the non-apertured areas of the bank layer.

[0117] The barrier layer BL may include a first barrier layer BL1 disposed on the insulating layer INS and a second barrier layer BL2 disposed on the first barrier layer BL1.

[0118] In the sub-pixel of FIG. 13, a lens portion LEN may be disposed corresponding to the opening region of the barrier layer BL.

[0119] The subpixel of FIG. 13 may include an encapsulation layer PCL between the passivation layer PAS and the first barrier layer BL1.

[0120] The subpixel in FIG. 13 may include a buffer layer BUF between the lens portion LEN and the sealing layer PCL.

[0121] The insulating layer INS may be multi-layered.

[0122] By way of example, the insulating layer INS may be a bilayer, or may include more or fewer layers.

[0123] The sealing layer PCL may be multi-layered.

[0124] As an 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 less layers. The sub-pixels are operable to emit light, generally represented by arrows L1-L5.

[0125] The lens portion LEN can effectively extract a part of the light L1, L2, L3, L4, and L5 emitted from the light emitting layer EL, that is, the light L2 and L3.

[0126] However, some of the light L1, L4 cannot reach the lens unit LEN and is blocked or reflected by the barrier layer BL, so that a portion of the light cannot be extracted, thereby reducing the brightness output to the user.

[0127] This can be caused by the presence or absence of the barrier layer BL.

[0128] Also, the center line G of the opening region of the bank layer BNK can deviate from the center line L of the lens portion. For example, in some light L5, the center line G of the opening region of the bank layer BNK can move to the right with the center line L of the lens portion as the center, which can allow a sudden change in brightness depending on the selected viewing angle mode.

[0129] FIG. 14a is a cross-sectional view taken along lines AA' and BB' in FIG. 10a, respectively.

[0130] Referring to Figure 14a, the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the sealing layer PCL, the barrier layer BL, and the buffer layer BUF in Figure 14a may be substantially identical to the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the sealing layer PCL, the barrier layer BL, and the buffer layer BUF described in Figure 13.

[0131] The barrier layer BL may be a multi-layer layer.

[0132] As an example, the barrier layer BL may include a first barrier layer BL1 and a second barrier layer BL2.

[0133] At least one of the first barrier layer BL1 and the second barrier layer BL2 may be a sensor.

[0134] As an example, the first barrier layer BL1 may be a sensor and the second barrier layer BL2 may be a black matrix, but is not limited thereto.

[0135] The light L1, L2, and L3 emitted from the light emitting layer EL may be extracted by the first lens portion LEN1.

[0136] As the center line G2 of the first opening region OPN1 moves in the first direction FD with respect to the center line G1 of the first recess CNC1, the amount of extracted light of L1, which has a larger emission angle than L2, increases.

[0137] Specifically, as the center line G2 of the first opening region OPN1 moves in the first direction FD with the center line G1 of the first recess CNC1 as a reference, the distance from the center line G2 of the first opening region OPN1 of the bank layer BNK to the upper surface of the inclined portion of the recess becomes shorter, so that the amount of extracted light having an emission angle of 60 degrees to 70 degrees like L1 can be increased. That is, when the position of the first opening region OPN1 of the bank layer BNK is changed with the center of the first recess CNC1 as a reference, the amount of light emitted through the first opening region OPN1 changes. This is because, for example, as shown in FIG. 13, light having a specific emission angle corresponding to the offset between the first opening region OPN1 and the first recess CNC1 is emitted, while light having no specific emission angle is reflected back toward the first recess CNC1. When the emission angle is 60 degrees to 70 degrees like light L1, it is advantageous to offset the center line G2 of the first opening region OPN1 with the center line G1 of the first recess CNC1 as a reference in order to emit or confine the light L1.

[0138] FIG. 14b is a cross-sectional view taken along lines CC' and DD' of FIG. 10b, respectively.

[0139] Referring to Figure 14b, the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the sealing layer PCL, the barrier layer BL, and the buffer layer BUF in Figure 14b may be substantially identical to the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, the passivation layer PAS, the sealing layer PCL, the barrier layer BL, and the buffer layer BUF described in Figure 13.

[0140] Also, the barrier layer BL in FIG. 14b may be a multi-layer, similar to the barrier layer BL described in FIG. 14a.

[0141] The light L1, L2, and L3 emitted from the light emitting layer EL may be extracted by the lens portion LEN2.

[0142] As the center line G2 of the opening region OPN2 moves in the first direction FD with respect to the center line G1 of the second recess CNC2, the amount of extracted light of L1, which has a larger emission angle than L3, increases.

[0143] Specifically, as the center line G2 of the second opening region OPN2 moves in the first direction FD with respect to the center line G1 of the second recess CNC2 as a reference, the distance from the center line of the second opening region OPN2 of the bank layer BNK to the upper surface of the inclined portion of the recess decreases, and therefore, for the same or similar reasons as those described above with reference to Figure 14a, the amount of extracted light having an emission angle of 60 degrees to 70 degrees, such as L1, may be increased.

[0144] FIG. 15 is an enlarged cross-sectional view of areas Y1 and Y2 in FIG. 14b.

[0145] Referring to Figure 15, the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, and the passivation layer PAS in Figure 15 may be substantially identical to the insulating layer INS, the first electrode layer AND, the bank layer BNK, the emitting layer EL, the second electrode layer CAT, and the passivation layer PAS described in Figure 13.

[0146] The insulating layer INS can include at least one or more recessed CNCs, and other layers above the insulating layer INS can have a generally similar shape and arrangement, i.e., the other layers have recessed arrangements that follow the recessed CNCs of the insulating layer INS.

[0147] The recess CNC may be composed of a flat portion FLT and a sloped portion SLO surrounding the flat portion FLT.

[0148] The slope portion SLO may include a first slope portion SLO1 and a second slope portion SLO2 facing the first slope portion SLO1 and an upper portion of the subpixel.

[0149] When measured parallel to the top surface of the subpixel, the distance from the center line G2 of the second opening region OPN2 of the bank layer BNK to the top surface of the first inclined portion SLO1 may be different from the distance from the center line G2 of the second opening region OPN2 of the bank layer BNK to the top surface of the second inclined portion SLO2.

[0150] This may be due to a difference in thickness of the bank layer BNK at a particular portion of the subpixel. In particular, the distance W1 from the top or front surface of the first inclined portion SLO1 of the insulating layer INS to the top 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 in contact with the left emitting layer EL of the subpixel) may be greater than the distance W2 from the top or front surface of the second inclined portion SLO2 of the insulating layer INS to the top 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 in contact with the right emitting layer EL of the subpixel). The difference between the distances W1 and W2 can be realized by making the thickness of the bank layer BNK between the first electrode layer AND and the emitting layer EL different.

[0151] By designing the distances W1 and W2 to be different, the center point (line) of the recess CNC and the center point (line) of the opening region OPN of the bank layer BNK can be made not to overlap or to be offset from each other, thereby improving the light extraction efficiency as described above.

[0152] The lower limit of W1 and W2 is not particularly limited, and W1 or W2 may be 0.

[0153] The height (H1, or the depth of the recess CNC) of the inclined portions SLO1, SLO2 of the recess CNC may be 0.7 μm or more, but is not limited to this.

[0154] If the angle between an imaginary plane (line) including the flat portion FLT of the recess CNC and an imaginary plane (line) including the inclined portion SLO is A1, the height H1 of the inclined portions SLO1 and SLO2 means the length of the inclined portion SLO of the recess CNC multiplied by sin(A1).

[0155] In other words, the following equation holds: H1=length of inclined portion SLO×sin(A1).

[0156] The angle A1 may be equal to or greater than 27 degrees and less than 80 degrees.

[0157] If the angle A1 is less than 27 degrees, the light emitted from the light-emitting layer EL may not reach the first electrode layer AND arranged in the inclined portion SLO, and may be transmitted to other adjacent subpixels, resulting in color mixing, or may be trapped within the display device 1000 and unable to be extracted to the outside.

[0158] If the angle A1 exceeds 80 degrees, a break may occur in the components such as the first electrode layer AND disposed on the inclined portion of the insulating layer INS.

[0159] FIG. 16 is a cross-sectional view showing the travel path of light in the left diagram of FIG.

[0160] Referring to FIG. 16, light L1 and L2 emitted from the light emitting layer EL may be extracted by the lens portion LEN.

[0161] L1 has a light emitting angle A2, and L2 has a light emitting angle B.

[0162] In order not to impede the paths of the lights L1 and L2 as they are extracted through the lens unit LEN, it is desirable to satisfy both of the following expressions (1) and (2).

[0163] <Formula (1)> R 2 ≧D×tan(A2)-M

[0164] <Formula (2)> (R 1 -M) / (Dd)=(R 2 -L) / D=tan(B)

[0165] In formulas (1) and (2), R 1 , R 2 are half the diameter of the opening region of the first barrier layer BL1 and half the diameter of the opening region of the second barrier layer BL2, respectively, D is the distance from the upper surface of the passivation layer PAS to the lower surface of the lens portion LEN, d is the distance from the top surface of the first barrier layer BL1 to the bottom surface of the second barrier layer BL2, M is half the width of the flat part of the passivation layer PAS, A2 indicates the emission angle of L1, and B indicates the emission angle of L2.

[0166] When both expressions (1) and (2) are satisfied, the barrier layers BL1 and BL2 do not overlap the flat portion of the passivation layer PAS, and the light L1 and L2 can be effectively extracted through the lens portion LEN without impeding the paths of the light L1 and L2.

[0167] FIG. 17 is a cross-sectional view showing the travel path of light in the right diagram of FIG. 14b.

[0168] Referring to FIG. 17, light L1 and L2 emitted from the light emitting layer EL may be extracted by the second lens portion LEN2.

[0169] L1 has a light emitting angle A3, and L2 has a light emitting angle C.

[0170] In order not to impede the path of the light L1 and L2 in the process of being extracted through the second lens portion LEN2, it is desirable to satisfy all of the following formulas (3), (4), and (5).

[0171] <Formula (3)> R 2 ≧D×tan(A3)-M

[0172] <Formula (4)> R 2 ≧M+N+H×tan(90-T)

[0173] <Formula (5)> R 1 =R 2

[0174] In formulas (3), (4) and (5), R 1 , R 2 are half the diameter of the opening region of the first barrier layer BL1 and half the diameter of the opening region of the second barrier layer BL2, respectively, D is the distance from the upper surface of the passivation layer PAS to the lower surface of the second lens portion LEN2, M is half the width of the flat part of the passivation layer PAS, N is the distance (N+M) from the center line L of the second lens portion LEN2 to the boundary of the flat portion of the recessed portion minus M, A3 is the emission angle of L1, and C is the emission angle of L2.

[0175] When all of equations (3), (4), and (5) are satisfied, the barrier layers BL1 and BL2 do not overlap with the flat portion FLT of the recess CNC2, and the light L1 and L2 can be effectively extracted through the second lens portion LEN2 without impeding the path of the light L1 and L2.

[0176] FIG. 18 is a cross-sectional view showing the travel path of light in the left diagram of FIG. 14b.

[0177] Referring to FIG. 18, light L1 and L3 emitted from the light emitting layer EL may be extracted by the second lens portion LEN2.

[0178] L1 has an emission angle A4 and L3 has an emission angle C.

[0179] In order not to impede the path of the light L1 and L3 in the process of being extracted through the second lens portion LEN2, it is desirable to satisfy all of the following formulas (6), (7), and (8).

[0180] <Formula (6)> R 2 ≧D×tan(A4)-M 1

[0181] <Formula (7)> R 2 ≧M 2 +N+H×tan(90-T)

[0182] <Formula (8)> R 1 =R 2

[0183] In equations (6), (7), and (8), R 1 , R 2 are half the diameter of the opening region of the first barrier layer BL1 and half the diameter of the opening region of the second barrier layer BL2, respectively, D is the distance from the upper surface of the passivation layer PAS to the lower surface of the second lens portion LEN2, M 1 , M 2 is the distance from the center line L of the second lens portion LEN2 to the boundary of the flat portion FLT of the passivation layer PAS, and the shorter distance is M 1 and the long distance is M 2 It is. N is the distance from the center line L of the second lens portion LEN2 to the boundary of the flat portion of the recess (N+M2 ) to M 2 is the value minus A4 is the emission angle of L1, and C is the emission angle of L3.

[0184] When all of equations (6), (7), and (8) are satisfied, the barrier layers BL1 and BL2 do not overlap with the flat portion FLT of the second recess CNC2, and the light L1 and L3 can be effectively extracted through the second lens portion LEN2 without impeding the path of the light L1 and L3.

[0185] FIG. 19 is a schematic diagram showing the change in viewing angle luminance in the vertical and horizontal directions when an OSM structure is applied to the wide viewing angle mode and narrow viewing angle mode of an SPM.

[0186] Referring to FIG. FIG. 2 is a schematic diagram showing a change in luminance between the left and right viewing angles in a wide viewing angle mode; is a schematic diagram showing the change in viewing angle luminance in the vertical (or horizontal) direction in the narrow viewing angle mode; <c>1 is a schematic diagram showing a change in luminance with respect to upper and lower viewing angles in a wide viewing angle mode.

[0187] < / c> 、 and <c>The change in viewing angle luminance of the combined SPM and OSM structure was shown compared to the case where only SPM was applied.

[0188] In this specification, SPM refers to a system that can switch between a wide viewing angle mode and a narrow viewing angle mode, and in order to embody SPM technology, it is preferable that 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 portions corresponding to the plurality of first opening areas and a second lens portion corresponding to the plurality of second opening areas.

[0189] In this specification, OSM refers to an insulating layer that includes a flat portion and a recess that is made up of an inclined portion surrounding the flat portion.

[0190] Figure 19< / c> Referring to FIG. 1, when OSM is applied to SPM in wide viewing angle mode (SPM+OSM), the luminance change due to the viewing angle can be reduced due to the light collecting effect of OSM.

[0191] Figure 19 Referring to FIG. 1, when OSM is applied to SPM in narrow viewing angle mode (SPM+OSM), the luminance change due to the viewing angle can be reduced due to the light collecting effect of OSM.

[0192] Figure 19 <c>1, when the optical axis is corrected by moving the recess in the vertical direction so that the OSM has an asymmetric separation distance, the amount of light (brightness) extracted in the upward direction can be improved.

[0193] 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.

[0194] for example,< / c> and In the above, 0 to 90 means the luminance viewing angle in one direction (right) of the second direction SD, and conversely, 0 to -90 means the luminance viewing angle in the opposite direction (left) to one direction of the second direction SD.

[0195] Also, <c>In the above, 0 to 90 means the luminance viewing angle in one direction (downward) of the first direction FD, and conversely, 0 to -90 means the luminance viewing angle in the opposite direction (upward) of the one direction of the first direction FD.

[0196] FIG. 20 is a schematic diagram showing an area defined in a polar coordinate system, in which the four vertices that have the minimum luminance value are connected.

[0197] Referring to Figure 20, a point in the polar coordinate system is represented by a radius r and an angle θ, where r denotes the distance from the pole and θ denotes the angle from the x-axis.

[0198] Here, if r has a negative value, it means a point a distance |r| away in the opposite direction to the direction indicated by θ.

[0199] The three regions shown in the polar coordinate system are defined as shown in Table 1. The vertex in each region in Table 1 means the vertex where the minimum luminance value occurs within the corresponding region.

[0200] [Table 1]

[0201] FIG. 21 is a graph showing the viewing angle luminance in the reference direction in the A1 and A2 areas in FIG.

[0202] In FIG. 21, the viewing angle deg corresponds to r in the polar coordinate system described in FIG.

[0203] FIG. 21 is a graph showing the viewing angle luminance in the reference direction of the A1 region and the viewing angle luminance in the reference direction of the A2 region according to the presence or absence of optimization when only SPM is applied and when SPM and OSM are applied simultaneously.

[0204] Referring to FIG. 21, it can be seen that when optimization was carried out with both SPM and OSM applied, the viewing angle luminance increased within the viewing angle range of 0 to 80 degrees compared to when only SPM was applied in both the A1 and A2 regions.

[0205] The above-described embodiment of the present disclosure can be briefly described as follows.

[0206] A display device according to an embodiment of the present disclosure includes a substrate, at least one recess located on the substrate and having a central point, the at least one recess including an insulating layer including a flat portion and a sloped portion surrounding the flat portion, one subpixel on the insulating layer within the at least one recess, and an opening region located on the insulating layer and corresponding to the subpixel, the opening region including a bank layer having a central point, the opening region being surrounded by the sloped portion, and the central point of the at least one recess may be offset from the central point of the opening region of the bank layer.

[0207] In a display device according to an embodiment of the present disclosure, in a planar view defined by a first direction and a second direction perpendicular to the first direction, the distance between two points where a virtual straight line passing through the center point of at least one recess and aligned with the first direction touches a boundary of at least one recess is longer than the distance between two points where a virtual straight line passing through the center point of at least one recess and aligned with the second direction touches a boundary of at least one recess, and the direction of the straight line passing through the center point of at least one recess and the center point of an opening region of the bank layer may be the first direction.

[0208] In a display device according to an embodiment of the present disclosure, in a planar view defined by a first direction and a second direction perpendicular to the first direction, the distance between two points at which a virtual straight line passing through a center point of at least one recess and aligned with the first direction touches a boundary of at least one recess is equal to the distance between two points at which a virtual straight line passing through the center point of at least one recess and aligned with the second direction touches a boundary of at least one recess, and the direction of the straight line passing through the center point of at least one recess and the center point of an opening region of the bank layer may be the first direction.

[0209] The display device according to the embodiment of the present disclosure may further include a plurality of barrier layers disposed on the insulating layer and disposed in an area of ​​the bank layer excluding the opening area.

[0210] In the display device according to the embodiment of the present disclosure, the multiple barrier layers may include a first barrier layer located on the insulating layer and a second barrier layer located on the first barrier layer.

[0211] 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.

[0212] In the display device according to the embodiment of the present disclosure, the opening area of ​​the second barrier layer may be larger than the opening area of ​​the first barrier layer.

[0213] In the display device according to the embodiment of the present disclosure, the size of the opening area of ​​the first barrier layer and the size of the opening area of ​​the second barrier layer may be the same.

[0214] The display device according to the embodiment of the present disclosure may further include a plurality of lenses on the bank layer corresponding to the at least one recess.

[0215] In a display device according to an embodiment of the present disclosure, the opening area of ​​the bank layer may include a plurality of first opening areas and a plurality of second opening areas narrower than the first opening areas, and may further include a plurality of first lens portions corresponding to the plurality of first opening areas and a plurality of second lens portions corresponding to the plurality of second opening areas.

[0216] A display device according to an embodiment of the present disclosure includes a substrate, an insulating layer located on the substrate and including at least one recess in one subpixel, the recess consisting of a flat portion and a sloped portion surrounding the flat portion; and a bank layer located on the insulating layer and including an opening in the subpixel, the opening including at least one recess surrounded by the sloped portion, the sloped portion of the recess including a first sloped portion and a second sloped portion, and the distance from the center line of the opening in the bank layer to the top surface of the first sloped portion may be different from the distance from the center line of the opening in the bank layer to the top surface of the second sloped portion.

[0217] The display device according to the embodiment of the present disclosure may further include a plurality of barrier layers disposed on the bank layer and in the region of the bank layer excluding the opening region.

[0218] In the display device according to the embodiment of the present disclosure, the multiple barrier layers may include: a first barrier layer located on the bank layer; and a second barrier layer located on the first barrier layer.

[0219] 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.

[0220] In the display device according to the embodiment of the present disclosure, the opening in the second barrier layer may be larger than the opening in the first barrier layer.

[0221] In the display device according to the embodiment of the present disclosure, the openings in the first barrier layer and the openings in the second barrier layer may have the same size.

[0222] A display device according to an embodiment of the present disclosure may include a substrate, an insulating layer on the substrate including at least one recess, subpixels on the insulating layer within the at least one recess, a bank layer located on the insulating layer and including openings corresponding to the subpixels, and at least one lens on the bank layer corresponding to the at least one recess.

[0223] In the display device according to the embodiment of the present disclosure, the at least one recess may include a plurality of first recesses and a plurality of second recesses narrower than the area of ​​the plurality of first recesses, and the at least one lens may include a plurality of first lenses located in an area corresponding to the plurality of first recesses and a plurality of second lenses located in an area corresponding to the plurality of second recesses, and the plurality of second lenses may be narrower than the plurality of first lenses. In the display device according to the embodiment of the present disclosure, the at least one recess may include a flat portion and an inclined portion surrounding the flat portion.

[0224] In a display device according to an embodiment of the present disclosure, the display device may further include a first barrier layer located on the bank layer and a second barrier layer on the first barrier layer, the first barrier layer and the second barrier layer each having an opening corresponding to the opening of the bank layer, and the at least one lens may be located on the second barrier layer and overlap with each of the openings of the first barrier layer and the second barrier layer.

[0225] In the display device according to the embodiment of the present disclosure, a center line of the opening of the bank layer may be offset from a center line of a lens corresponding to the opening of the at least one lens.

[0226] The above description is merely an illustrative example of the technical idea of ​​the present disclosure, and various modifications and variations are possible within the scope of the essential characteristics of the present disclosure if one has ordinary knowledge in the technical field to which the present disclosure pertains. In addition, the examples disclosed in the present disclosure are intended to explain the technical idea of ​​the present disclosure, rather than to limit it, and therefore the scope of the technical idea of ​​the present disclosure is not limited by such examples.

[0227] The various embodiments described above can be combined to provide additional embodiments. Aspects of the embodiments can be modified, if necessary, to adopt concepts from various patents, applications and publications to provide additional embodiments.

[0228] These and other changes can be made to the embodiments in light of the above detailed description. In general, the terms used in the following claims should not be construed to limit the claims to the specific embodiments disclosed in the specification and claims, but should be interpreted to include a full scope of equivalents to all possible embodiments. Thus, the claims are not limited by the disclosed subject matter. [Explanation of symbols]

[0229] 1000: Display device INS: Insulating layer FLT: Flat part of the recess SLO: Slope part of the recess CNC: Concave AND: First electrode layer BNK: Bank layer EL: Light-emitting layer CAT: Second electrode layer PAS: Passivation layer PCL: Sealing layer BL: Barrier layer BL1: First barrier layer BL2: Second barrier layer BUF: Buffer layer LEN: Lens part LEN1: First lens section LEN2: Second lens section PG1: 1st pixel group PG2: 2nd pixel group OPN1: 1st opening area OPN2: 2nd opening area CNC1: 1st recess CNC2: 2nd recess< / c>

Claims

1. substrate; an insulating layer located on the substrate and including at least one recess having a center point, the at least one recess including a flat portion and a sloped portion surrounding the flat portion; a subpixel on the insulating layer within the at least one recess; and a bank layer located on the insulating layer and including an opening area corresponding to the subpixel, the opening area including a bank layer having a center point; the open area is surrounded by the sloped portion; A display device, wherein the center point of the at least one recess is offset from the center point of the open area of ​​the bank layer.

2. In a plan view defined by a first direction and a second direction perpendicular to the first direction, a distance between two points at which a virtual straight line passing through a center point of the at least one recess and aligned with the first direction touches a boundary of the at least one recess is longer than a distance between two points at which a virtual straight line passing through a center point of the at least one recess and aligned with the second direction touches a boundary of the at least one recess, The display device according to claim 1 , wherein the first direction is a direction of a straight line passing through a center point of the at least one recessed portion and a center point of an opening region of the bank layer.

3. In a plan view defined by a first direction and a second direction perpendicular to the first direction, a distance between two points at which a virtual straight line passing through a center point of the at least one recess and aligned with the first direction touches a boundary of the at least one recess is equal to a distance between two points at which a virtual straight line passing through the center point of the at least one recess and aligned with the second direction touches the boundary of the at least one recess, The display device according to claim 1 , wherein the first direction is a direction of a straight line passing through a center point of the at least one recessed portion and a center point of an opening region of the bank layer.

4. The display device according to claim 1 , further comprising a plurality of barrier layers located on the insulating layer and located in areas of the bank layer excluding the opening areas.

5. The plurality of barrier layers include a first barrier layer overlying the insulating layer; and The display of claim 4 including a second barrier layer overlying the first barrier layer.

6. The display device of 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 an opening area of ​​the second barrier layer is larger than an opening area of ​​the first barrier layer.

8. The display device according to claim 5 , wherein the opening region of the first barrier layer and the opening region 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 corresponding to the at least one recess.

10. the opening region of the bank layer includes a plurality of first opening regions and a plurality of second opening regions narrower than the first opening regions, The display device of claim 1 , further comprising a plurality of first lenses corresponding to the plurality of first aperture regions and a plurality of second lenses corresponding to the plurality of second aperture regions.

11. substrate; an insulating layer located on the substrate, the insulating layer including at least one recess in a subpixel, the recess including a flat portion and a sloped portion surrounding the flat portion; and a bank layer located on the insulating layer and including an opening within the subpixel, the opening including the at least one recess surrounded by the slope; the inclined portion of the recess includes a first inclined portion and a second inclined portion; A display device, wherein a distance from a center line of an opening of the bank layer to an upper surface of a first inclined portion is different from a distance from the center line of the opening of the bank layer to an upper surface of a second inclined portion.

12. The display device according to claim 11 , further comprising a plurality of barrier layers located on the bank layer and located in areas of the bank layer excluding the openings.

13. The plurality of barrier layers include a first barrier layer overlying the bank layer; and 13. The display of claim 12, further comprising a second barrier layer overlying the first barrier layer.

14. The display device of 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 in the first barrier layer and the opening in the second barrier layer have the same size.

17. substrate; an insulating layer on said substrate comprising at least one recess; a subpixel on the insulating layer within the at least one recess; a bank layer located on the insulating layer and including openings corresponding to the subpixels; and at least one lens on said bank layer corresponding to said at least one recess.

18. The at least one recess includes a plurality of first recesses and a plurality of second recesses each having an area narrower than the area of ​​the first recesses, the at least one lens includes a plurality of first lenses located in an area corresponding to a plurality of first recesses and a plurality of second lenses located in an area corresponding to a plurality of second recesses; The display of claim 17 , wherein the second lenses are narrower than the 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. further comprising a first barrier layer located on the bank layer and a second barrier layer on the first barrier layer; the first barrier layer and the second barrier layer each have an opening corresponding to an opening of the bank layer; 20. The display of claim 17, wherein the at least one lens is located on the second barrier layer and overlaps an opening in each of the first and second barrier layers.

21. The display device of claim 17 , wherein a centerline of an opening in the bank layer is offset from a centerline of a lens corresponding to the opening in the at least one lens.

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