Display device

Abstract

To provide a display device that can improve light extraction efficiency.SOLUTION: A display device according to an embodiment of the present disclosure includes an insulating layer located on a substrate, and including a plurality of recesses 400 located in respective ones of a plurality of subpixels, in which an area of a first recess located in a first subpixel is greater than an area of a second recess located in a second subpixel, and a plurality of lens portions located on the insulating layer, including a first lens portion corresponding to the first recesses and a second lens portion corresponding to the second recesses.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device.

Background Art

[0002] With the development of the information society, the requirements for display devices for displaying images have increased in various forms. 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] A display device that embodies various information on a screen is a core technology in the information and communication technology era and plays a role in displaying various information in a display area.

[0004] A display device may be required to have excellent display quality, luminous efficiency, and the like.

[0005] In particular, since luminous efficiency is required for a display device to use limited power with the development of technology, its importance is increasing.

[0006] The luminous efficiency of a display device may be determined by a light-emitting element included in the display device.

[0007] A display device including a light-emitting element with excellent luminous efficiency can have excellent luminous efficiency.

[0008] Therefore, as a method for improving the luminous efficiency of a display device, it is conceivable to improve the luminous efficiency of a light-emitting element.

[0009] However, it is difficult to improve the luminous efficiency of a light-emitting element.

Summary of the Invention

Problems to be Solved by the Invention

[0010] Embodiments of the present disclosure can provide a display device capable of improving light extraction efficiency.

[0011] Embodiments of the present disclosure can provide a display device capable of low-power driving due to high luminance characteristics. **Means for Solving the Problems**

[0012] Embodiments of the present disclosure include a substrate including a plurality of sub-pixels, an insulating layer on the substrate, the insulating layer including a plurality of recesses extending therethrough, the plurality of recesses including a first recess in a first sub-pixel among the plurality of sub-pixels and a second recess in a second sub-pixel among the plurality of sub-pixels, an insulating layer, a bank layer on the insulating layer, the bank layer including a plurality of opening regions, the plurality of opening regions including a first opening region overlapping the first recess and a second opening region overlapping the second recess, and a plurality of lens portions on the insulating layer and the bank layer, the plurality of lens portions including a first lens portion overlapping the first recess and the first opening region and a second lens portion overlapping the second recess and the second opening region, and can provide a display device in which the area of the first portion is larger than the area of the second recess.

[0013] Embodiments of the present disclosure include a substrate, an insulating layer on the substrate, the insulating layer extending through the insulating layer and including a plurality of recesses in a plurality of sub-pixels, each of the plurality of recesses including a flat portion and an inclined portion extending from the flat portion and surrounding the flat portion, an insulating layer, a bank layer on the insulating layer, each including a plurality of opening regions in corresponding sub-pixels among the plurality of sub-pixels, the plurality of opening regions including a first opening region surrounded by a first recess among the plurality of recesses and in a first sub-pixel among the plurality of sub-pixels, and a second opening region surrounded by a second recess among the plurality of recesses and in a second sub-pixel among the plurality of sub-pixels, and a plurality of lens portions on the bank layer and the insulating layer, the plurality of lens portions including a first lens portion overlapping the first opening region and the first recess and a second lens portion overlapping the second opening region and the second recess, and can provide a display device in which the first opening region is wider than the second opening region.

[0014] Embodiments of the present disclosure include a substrate, a plurality of transistors on the substrate, including a first transistor, a first insulating layer on the plurality of transistors, the first insulating layer including a first recess extending therethrough, a first light-emitting element within the first recess, the first light-emitting element being connected to the first transistor, a first electrode layer within the first recess, a first light-emitting layer on the first electrode layer within the first recess, and a first portion of a second electrode layer on the first light-emitting layer within the first recess, a bank layer on the first insulating layer, the bank layer including a first opening region extending to the first recess, and a plurality of lens portions on the first insulating layer, the plurality of lens portions including a first lens portion overlapping the first recess and the first opening region, and a display device including the plurality of lens portions can be provided.

[0015] According to embodiments of the present disclosure, a display device capable of improving light extraction efficiency can be provided.

[0016] According to embodiments of the present disclosure, a display device capable of low-power driving can be provided due to high brightness characteristics.

Brief Description of the Drawings

[0017]

Figure 1a

Figure 1b

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8a

Figure 8b

Figure 9a

Figure 9b

Figure 9c

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0018] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to the components of each drawing, the same components can be labeled with the same numerals as much as possible even if they are shown on different drawings. In addition, when explaining the present disclosure, if it is determined that a specific description of a related known configuration or function obscures the gist of the present disclosure, the detailed description thereof can be omitted. When terms such as "including", "having", and "performed" are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include the case where a plurality are included unless otherwise explicitly stated.

[0019] In addition, when explaining the components of the present disclosure, terms such as first, second, A, B, (a), B, etc. can be used. These terms are for distinguishing the components from other components, and the essence, order, procedure, number, etc. of the components are not limited by these terms.

[0020] In the description of the positional relationship of components, when it is described that two or more components "are connected", "are coupled", or "are connected", etc., it should be understood that two or more components can be directly "connected", "coupled", or "connected", but it is also possible that another component "intervenes" between two or more components and "connects", "couples", or "connects" them. Here, the other component may be included in one or more of the two or more components that are "connected", "coupled", or "connected" to each other.

[0021] In the description of the temporal flow relationship regarding components, operating methods, manufacturing methods, etc., for example, when the temporal front-back relationship or flow front-back relationship is described by "after ~", "subsequent to ~", "after ~", "before ~", etc., it can include the case where it is not continuous unless "immediately" or "directly" is used.

[0022] On the one hand, when referring to a numerical value for a component or its corresponding information (e.g., level, etc.), even without a separate explicit description, the numerical value or its corresponding information can be interpreted as including an error range that can be caused by various factors (e.g., process factors, internal or external impacts, noise, etc.).

[0023] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024] FIGS. 1a and 1b are examples according to an embodiment of the present disclosure, in which a display device 100 (e.g., a semiconductor device) to which a switchable privacy mode is applied is installed at the front of the passenger seat, and is a plan view when in a narrow viewing angle mode and a wide viewing angle mode of the switchable privacy mode.

[0025] As shown in FIGS. 1a and 1b, the display device 100 capable of switching between a wide viewing angle mode and a narrow viewing angle mode can be installed at the front of the passenger seat of an automobile.

[0026] However, the location where the display device 100 is installed is not limited to the front of the passenger seat, and can be arranged 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. The installation location is not limited to an automobile either, and can be applied to all locations where privacy protection is required.

[0027] As shown in FIG. 1a, while in the narrow viewing angle mode, the display device 100 provides an image having a luminance of 1% or more (e.g., a first luminance) to the passenger, but provides an image having a luminance of less than 1% (e.g., a second luminance) to the driver.

[0028] In other words, only the passenger sitting in the passenger seat has a secured view, and the driver sitting in the driver's seat does not have a secured view, so privacy protection for the passenger sitting in the passenger seat is provided. Therefore, while in the narrow viewing angle mode, an image having a first viewing angle is displayed.

[0029] As shown in FIG. 1b, while in the wide viewing angle mode, the display device 100 provides an image that can be shared by both the passenger and the driver by providing an image having a luminance of 1% or more to both the passenger and the driver.

[0030] In other words, in the wide viewing angle mode, a field of view can be secured not only for a passenger sitting in the passenger seat but also for a driver sitting in the driver's seat. Therefore, while in the wide viewing angle mode, an image having a second viewing angle larger than the first viewing angle is displayed.

[0031] FIG. 2 is an exemplary diagram of the display device 100 when the display device according to an embodiment of the present disclosure senses a touch in a self - capacitance - based touch sensing method.

[0032] Referring to FIG. 2, in the case of a self - capacitance - based touch sensing method, each touch sensor 200 arranged in the display device 100 has both the role of a driving touch electrode (applying a driving signal) and the role of a sensing touch electrode (detecting a sensing signal).

[0033] In other words, a driving signal is applied to each touch sensor 200, and a sensing signal is received through the touch sensor 200 to which the driving signal is applied.

[0034] Therefore, in a self - capacitance - based touch sensing method, there is no separate distinction between the driving electrode and the sensing electrode.

[0035] In the case of such a self - capacitance - based touch sensing method, the touch sensing circuit applies a driving signal to one or more touch sensors 200, receives a sensing signal from the touch sensor 200 to which the driving signal is applied, and based on the received sensing signal, detects the presence or absence of a touch and / or touch coordinates, etc., based on a change in capacitance between a pointer such as a finger or a pen and the touch sensor 200.

[0036] Referring to FIG. 2, for the transmission of drive signals and sensing signals, each of the plurality of touch sensors 200 can be electrically connected to the pads 500 through one or more touch lines 300.

[0037] The pads 500 to which the touch lines 300 are connected can be connected to a touch sensing circuit (not shown).

[0038] The touch sensing circuit (not shown) can supply a touch drive signal to at least one of the plurality of touch sensors 200 and detect at least one of the presence or absence of a touch and the touch position in response to the touch drive signal.

[0039] Referring to FIG. 2, the plurality of touch sensors 200 can be located on a plurality of sub-pixels located on the substrate.

[0040] The arrangement of the plurality of sub-pixels shown in FIG. 2 is exemplary and not necessarily limited thereto.

[0041] Referring to FIG. 2, each of the plurality of touch sensors 200 may, for example, be diamond-shaped when looking at the outer contour, or may be rectangular (including squares) in some cases, and moreover, may be of various shapes.

[0042] FIG. 2 illustrates a self-capacitance-based touch sensing method, which is exemplary and not necessarily limited to the touch sensing method of the display device 100. As another example, a mutual capacitance-based touch sensing method may be used.

[0043] When the touch sensing method of the display device 100 is a mutual capacitance-based touch sensing method, it can include a plurality of connection patterns for electrically connecting at least one of the plurality of touch sensors.

[0044] FIG. 3 is a plan view showing sub-pixels arranged in an active area of a display device according to an embodiment of the present disclosure.

[0045] Referring to FIG. 3, the pixels arranged in the active area A / A of the display device 100 can include sub-pixels of different colors in order to embody the color of an image.

[0046] The sub-pixels can include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0047] Each of the sub-pixels can further include a white sub-pixel. However, in FIG. 3, the case including the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B will be described as an example.

[0048] And the sub-pixels can include sub-pixels having different areas from each other in order to realize a mode-switchable privacy mode (Switchable Privacy Mode).

[0049] As an example, on a plane defined by a first direction FD and a second direction SD, a plurality of sub-pixels located on a substrate and including a first sub-pixel and a second sub-pixel having an area smaller than that of the first sub-pixel can be located within the active area A / A.

[0050] In this way, 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 A / A of the display device 100 in FIG. 3 to be different, a privacy mode system capable of switching between a wide viewing angle mode and a narrow viewing angle mode can be embodied.

[0051] However, the size and arrangement procedure of sub-pixels for implementing a privacy mode with mode switching ability are not limited to this. In FIG. 3, in the first pixel group PG1, the arrangement of four first sub-pixels having a large-sized area and fourteen second sub-pixels having a small-sized area will be described as an example.

[0052] Also, each of the sub-pixels can include a pixel circuit and a light-emitting element.

[0053] Referring to FIG. 3, a plurality of touch sensors 200 may be arranged in at least a partial area of the area other than the area where a plurality of sub-pixels are arranged. That is, the plurality of touch sensors 200 do not overlap with the sub-pixels from a planar perspective.

[0054] The plurality of touch sensors 200 illustrated in FIG. 3 can operate in a self-capacitance-based touch sensing method, can operate in a mutual capacitance-based touch sensing method, and can operate in various touch sensing methods applicable to the touch sensor 200.

[0055] Also, the arrangement of the plurality of touch sensors 200 illustrated in FIG. 3 is an exemplary one for showing that it is arranged in at least a partial area of the area other than the area where a plurality of sub-pixels are arranged, and is not necessarily limited to such an arrangement or shape. It can cover the entire area of the active area A / A or a part thereof, and there may be a case where the touch sensor 200 is not arranged.

[0056] The plurality of touch sensors may be in a mesh shape having openings according to the arrangement of each sub-pixel.

[0057] The plurality of touch sensors in FIG. 3 may be in a shape having an opening according to the arrangement of the lens portion arranged on top of each sub-pixel, and may have a shape in which at least two openings are connected.

[0058] In addition, in order to enhance the sensing of the touch sensor, for sub-pixels with a small size, the sub-pixels are arranged within the aperture of the touch sensor. However, for sub-pixels with a relatively large size or a rectangular shape that cannot be arranged within the same aperture, the touch sensor can be arranged to be parallel to the long side of the sub-pixel. A plurality of touch sensors can be independently formed according to the shape and arrangement of each sub-pixel, and each touch sensor will be electrically connected by a connection pattern (not shown).

[0059] FIG. 4 is a plan view showing sub-pixels arranged in the active area of a display device according to another embodiment of the present disclosure.

[0060] Referring to FIG. 4, it can include a plurality of black matrices 220 arranged in at least a partial area of the area other than the area where a plurality of sub-pixels in the active area A / A of FIG. 3 are arranged.

[0061] Referring to FIG. 4, a plurality of touch sensors 210 are arranged in at least a partial area of the area other than the area where a plurality of sub-pixels are arranged, and a plurality of black matrices 220 are arranged in at least a partial area of the area other than the area where a plurality of sub-pixels are arranged. A partial area of the plurality of touch sensors 210 and the plurality of black matrices 220 can overlap with each other. That is, the touch sensor 210 and the black matrix 220 do not overlap with the sub-pixel and the lens unit LEN. Here, the plurality of black matrices 220 may be in a mesh shape having apertures with different sizes and shapes according to the arrangement of each sub-pixel with different sizes and shapes. In the case of a sub-pixel where the touch sensor is arranged to be parallel to the long side of the sub-pixel, the black matrix 220 is also arranged to be parallel to the long side of the sub-pixel to cover the touch sensor, and the short side of the sub-pixel does not need to be surrounded by the black matrix.

[0062] However, this is exemplary and not necessarily limiting, and the touch sensor 210 and the black matrix 220 can be arranged so as to completely overlap or not overlap in a plan view defined by the first direction FD and the second direction SD, and various arrangements are possible.

[0063] Also, within the active region A / A, only the black matrix 220, only the touch sensor 210, or neither the black matrix 220 nor the touch sensor 210 may be arranged on a plurality of sub-pixels.

[0064] FIG. 5 is a plan view showing an enlarged view of the PG1 region of FIG. 3 according to an embodiment of the present disclosure.

[0065] Referring to FIG. 5, a plurality of recesses 400 located in each of the plurality of sub-pixels can be included.

[0066] And the first pixel group PG1 can include a plurality of first sub-pixels SP1 and a plurality of second sub-pixels SP2.

[0067] Some of the sub-pixels SP1, SP2 can emit light of different colors from each other.

[0068] As an example, the first sub-pixel SP1 consists of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and can emit light having red, green, and blue colors, respectively.

[0069] As an example, the second sub-pixel SP2 consists of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and can emit light having red, green, and blue colors, respectively.

[0070] The layout diagrams of sub-pixels SP1, SP2, red sub-pixel R, green sub-pixel G, and blue sub-pixel B, such as the plan view of FIG. 5, are exemplary and are not necessarily limited to such a layout, and can be arranged in various combinations.

[0071] Sub-pixels that emit light of different colors can include aperture regions having different areas from each other.

[0072] As an example, the area of the aperture region that emits blue light may be the largest, and the area of the aperture region that emits red light may be the smallest.

[0073] This is because the device characteristics of the light-emitting devices included in the sub-pixels that emit light of different colors are different from each other.

[0074] However, it is not necessarily limited to this, and the area of the aperture region may be the same regardless of the color.

[0075] Referring to FIG. 5, the recess disposed in the first sub-pixel SP1 surrounds a part of the aperture region within the first sub-pixel, and the recess disposed in the second sub-pixel SP2 can surround the aperture region within the second sub-pixel.

[0076] Here, the fact that the recess surrounds the second sub-pixel means that, in a plan view defined by the first direction FD and the second direction SD, it surrounds all the outlines of the aperture region within the second sub-pixel.

[0077] FIG. 6 is a plan view obtained by enlarging the PG2 region of FIG. 4 according to an embodiment of the present disclosure.

[0078] Referring to FIG. 6, the second pixel group PG2 can be regarded as including the black matrix 220 in addition to the first pixel group PG1 of FIG. 5.

[0079] Matters regarding the plurality of sub-pixels in FIG. 6 and the recesses disposed in each of the plurality of sub-pixels may be substantially the same as those regarding the plurality of sub-pixels in FIG. 5 and the recesses disposed in each of the plurality of sub-pixels.

[0080] FIG. 7 is a plan view showing an operation mode of the display device in a privacy mode capable of mode switching according to an embodiment of the present disclosure.

[0081] FIG. 7 will be described by taking the case of the second pixel group PG2 in FIG. 6 as an example. However, this is an exemplary illustration for explaining the privacy mode capable of mode switching, and is not necessarily applicable only to the case of the second pixel group PG2. If it can be applied to the case of the first pixel group PG1, it can also be applied to other pixel groups.

[0082] Referring to FIG. 7, according to the convenience of the user (which can be, for example, the passenger or the driver in FIGS. 1a and 1b), it can be switched between a wide viewing angle mode and a narrow viewing angle mode.

[0083] In the wide viewing angle mode, in order to ensure a wide viewing angle, light is emitted from the light emitting region of the first sub-pixel SP1 having a large area, and light may not be emitted (OFF) from the light emitting region of the second sub-pixel SP2 having an area smaller than that of the first sub-pixel SP1.

[0084] In the narrow viewing angle mode, light is not emitted (OFF) from the light emitting region of the first sub-pixel SP1 having a large area due to the narrow viewing angle, and light may be emitted from the light emitting region of the second sub-pixel SP2 having an area smaller than that of the first sub-pixel SP1.

[0085] When the display device 100 is installed at the front of the passenger seat, in the wide viewing angle mode, the field of view is ensured not only for the passenger sitting in the passenger seat but also for the driver sitting in the driver's seat. That is, both the passenger and the driver can view the image while in the wide viewing angle mode.

[0086] And in the narrow viewing angle mode, only the passengers sitting in the passenger seat have their field of view secured, and the driver sitting in the driver's seat does not have their field of view secured. Therefore, privacy protection for only the passengers sitting in the passenger seat is achieved. That is, while in the narrow viewing angle mode, the driver cannot view the image, and only the passengers can view the image.

[0087] Figures 8a and 8b are perspective views showing the first lens unit LEN1 and the second lens unit LEN2 of a display device according to an embodiment of the present disclosure, respectively.

[0088] Referring to Figure 8a, the first lens unit LEN1 corresponding to the first sub-pixel SP1 may be in a semi-cylindrical shape having a diameter C1 in the first direction FD, a diameter C2 in the second direction SD, and a height in the third direction TD.

[0089] The first lens unit LEN1 may have a diameter C2 in the second direction SD that is larger than the diameter C1 in the first direction FD.

[0090] Although the shape of the first lens unit LEN1 in Figure 8a is semi-cylindrical, this is exemplary and not necessarily limited to such a shape. Various shapes are possible according to the shape of the opening region of the first sub-pixel SP1.

[0091] As an 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 larger or smaller than half of the diameter C1 in the first direction FD.

[0092] Referring to Figure 8b, the second lens unit LEN2 corresponding to the second sub-pixel SP2 may be in 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.

[0093] The second lens unit LEN2 may have the diameter S2 in the second direction SD and the diameter S1 in the first direction FD being the same as each other.

[0094] Although the shape of the second lens unit LEN2 in FIG. 8b is hemispherical, this is exemplary and not necessarily limited to such a shape, and various shapes are possible according to the shape of the opening region of the second sub-pixel SP2.

[0095] As an 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 to this, and may be larger or smaller than half of the diameter S1 in the first direction FD.

[0096] FIGS. 9a and 9b are plan views showing an enlarged view of an embodiment of SP1 and SP2 in FIG. 5 according to an embodiment of the present disclosure.

[0097] When explaining the first and second sub-pixels SP1 and SP2 in FIGS. 9a and 9b, a touch sensor (not shown) is omitted.

[0098] Referring to FIG. 9a, the first sub-pixel SP1 may include a first opening region OPN1 within the first sub-pixel and a first recess 410 surrounding the first opening region OPN1. Here, the first recess 410 may be formed along the short side (for example, the first side) of the first opening region OPN1, and may not be formed along the long side (for example, the second side) of the first opening region OPN1.

[0099] However, it is not necessarily limited to this, and the first recess 410 may be formed along the long side of the first opening region OPN1, or may be formed surrounding both the short side and the long side, etc., and can be formed in various shapes. In FIG. 9a, an example where the first recess 410 is formed along the short side of the first opening region OPN1 will be exemplarily described.

[0100] The first recess 410 may be composed of a flat portion and an inclined portion surrounding the flat portion.

[0101] And the first opening region OPN1 may be surrounded by the inclined portion of the first recess 410.

[0102] The light-emitting region of the first sub-pixel SP1 may be defined by the first opening region OPN1.

[0103] In other words, the light-emitting region of the first sub-pixel SP1 may be substantially the same as the first opening region OPN1.

[0104] In the present disclosure, "substantially the same" can mean to a certain extent of being the same, taking into account minor differences due to process errors.

[0105] The first sub-pixel SP1 may include a first lens portion LEN1 corresponding to the first opening region OPN1. That is, the first lens portion LEN1 overlaps the first opening region OPN1.

[0106] The first lens portion LEN1 in FIG. 9a may be substantially the same as the first lens portion LEN1 described in FIG. 8a.

[0107] The first lens portion LEN1 can cover the first opening region OPN1 within the first sub-pixel SP1 and a recess disposed in the first sub-pixel SP1.

[0108] Here, the first lens portion LEN1 covering the recess disposed in the first sub-pixel SP1 is a concept including both the case of covering all of the recesses disposed in the first sub-pixel SP1 and the case of covering a part thereof.

[0109] The first lens portion LEN1 is for changing the optical path of the light emitted from the first opening region OPN1 to improve the light efficiency. The first lens portion LEN1 is positioned to correspond to the first opening region OPN1, and its shape can also correspond to the shape of the first opening region OPN1. That is, the shape of the first lens portion LEN1 can have the same shape as the first opening region OPN1. However, the shape of the first lens portion LEN1 is not necessarily limited to the shape of the first opening region, and various shapes are possible.

[0110] Referring to FIG. 9a, the recess 410 disposed in the first sub-pixel SP1 can surround a part of the first opening region OPN1 within the first sub-pixel SP1.

[0111] As a preferred embodiment of FIG. 9a, in a plan view defined by a first direction FD and a second direction SD orthogonal to the first direction, a virtual line (e.g., a second virtual line, L2) parallel to the first direction FD passing through the center point of the first opening region OPN1 within the first sub-pixel SP1 is longer than the distance (e.g., a second distance) between two points (e.g., a pair of second points) in contact with the boundary of the first opening region OPN1 within the first sub-pixel SP1, and a virtual line (e.g., a first virtual line, L1) parallel to the second direction SD passing through the center point of the first opening region OPN1 within the first sub-pixel SP1 is longer than the distance (e.g., a first distance) between two points (e.g., a pair of first points) in contact with the boundary of the first opening region OPN1 within the first sub-pixel SP1. The first recess 410 disposed in the first sub-pixel SP1 can surround the vicinity of two points where the virtual line parallel to the second direction SD passing through the center point of the first opening region OPN1 within the first sub-pixel SP1 contacts the boundary of the first opening region OPN1 within the first sub-pixel SP1.

[0112] In the present disclosure, the center point can mean the geometric center of a region having an arbitrary area in a plan view defined by a first direction FD and a second direction SD orthogonal to the first direction FD.

[0113] As an example, the center point of the first opening region OPN1 in FIG. 9a can mean the intersection of two diagonal lines connecting the opposing vertices of the first opening region OPN1.

[0114] At this time, the center point of the first opening region OPN1 is located inside the first opening region OPN1.

[0115] When the first concave portion 410 is arranged as a preferred embodiment of FIG. 9a described above, wide light extraction is performed in the second direction SD by the first concave portion 410, and while the viewing angle in the first direction FD is decreased by the first lens portion LEN1, the luminance viewing angle in the second direction SD is improved, thereby realizing a wide viewing angle mode desired by the user.

[0116] Referring to FIG. 9b, the second sub-pixel SP2 may include a second opening region OPN2 within the second sub-pixel and a second concave portion 420 surrounding the second opening region OPN2.

[0117] The second concave portion 420 may be composed of a flat portion and an inclined portion surrounding the flat portion.

[0118] And the second opening region OPN2 may be surrounded by the inclined portion of the second concave portion 420.

[0119] The light emitting region of the second sub-pixel SP2 may be defined by the second opening region OPN2.

[0120] In other words, the light emitting region of the second sub-pixel SP2 may be substantially the same as the second opening region OPN2.

[0121] The second sub-pixel SP2 may include a second lens portion LEN2 corresponding to the second opening region OPN2. That is, the second lens portion LEN2 may overlap with the second opening region OPN2.

[0122] The second lens portion LEN2 in FIG. 9b may be substantially the same as the second lens portion LEN2 described in FIG. 8b.

[0123] The second lens unit LEN2 is for changing the optical path of the light emitted from the second opening region OPN2 to improve the light efficiency. The second lens unit LEN2 is positioned corresponding to the second opening region OPN2, and its shape can also correspond to the shape of the second opening region OPN2. That is, the shape of the second lens unit LEN2 may be the same as the shape of the second opening region OPN2. However, the shape of the second lens unit LEN2 is not necessarily limited to the shape of the second opening region, and various shapes are possible.

[0124] Referring to FIG. 9b, the recess 420 disposed in the second sub-pixel SP2 can surround the second opening region OPN2 within the second sub-pixel SP2.

[0125] As a preferred embodiment of FIG. 9b, in a plan view defined by a first direction FD and a second direction SD orthogonal to the first direction, a virtual straight line L3 parallel to the first direction FD passing through the center point of the second opening region OPN2 within the second sub-pixel SP2, the distance between two points in contact with the boundary of the second opening region OPN2 within the second sub-pixel SP2, and a virtual straight line L4 parallel to the second direction SD passing through the center point of the second opening region OPN2 within the second sub-pixel SP2 and the distance between two points in contact with the boundary of the second opening region OPN2 within the second sub-pixel SP2 may be the same.

[0126] When arranging the second recess 420 as the preferred embodiment of FIG. 9b described above, the second opening region OPN2 can be surrounded by the inclined portion of the second recess 420, so that light extraction can be maximized. The viewing angle in the first direction FD can be reduced through the second lens unit LEN2, and light can be concentrated in the front, realizing the narrow viewing angle mode desired by the user.

[0127] FIG. 9c is an enlarged plan view of another embodiment of SP1 in FIG. 5 according to an embodiment of the present disclosure.

[0128] The opening region OPN1 and the first recess 410 within the first sub-pixel in FIG. 9c may be substantially the same as the matters regarding the opening region OPN1 and the first recess 410 within the first sub-pixel described in FIG. 9a.

[0129] Referring to FIG. 9c, the first lens portion LEN1 covers the opening region OPN1 within the first sub-pixel and can cover a part of the recess disposed in the first sub-pixel without covering the entire first recess 410. Therefore, a part of the first recess 410 does not have to overlap with the first lens portion LEN1.

[0130] When designed like the first lens portion LEN1 of FIG. 9c described above, the first lens portion LEN1 extracts the light emitted through the opening region OPN1 within the first sub-pixel, and the light emitted by the first recess 410 is not extracted by the first lens portion LEN1.

[0131] Therefore, the light emitted by the first recess 410 is not extracted by the first lens portion LEN1, so the luminance efficiency decreases, but the viewing angle in the second direction SD becomes larger, and an enhanced wide viewing angle mode can be realized.

[0132] FIG. 10 is a cross-sectional view taken along line A-A' of FIG. 6 according to an embodiment of the present disclosure.

[0133] FIG. 10 may be a diagram showing a plurality of sub-pixel regions in the display device according to an embodiment of the present disclosure, or may be a diagram showing a part of the non-active region.

[0134] Referring to FIG. 10, the display device according to an embodiment of the present disclosure includes a substrate 1100, an insulating layer 1210 located on the substrate, a first electrode layer 1310 located on the insulating layer 1210, a bank layer 1330 located on the upper part of the first electrode layer 1310 and the upper part of the insulating layer 1210, a light-emitting layer 1320 located on the first electrode layer 1310, a second electrode layer 1340 located on the light-emitting layer 1320 and the bank layer 1330, a sealing layer 1350 located on the second electrode layer 1340, a touch buffer layer 1360 located on the sealing layer 1350, a touch interlayer insulating layer 1370 located on the touch buffer layer 1360, and a planarization layer 1380 located on the touch interlayer insulating layer 1370.

[0135] The display device 100 may include a first transistor located on the substrate 1100 and an organic light-emitting element electrically connected to the first transistor in the active region.

[0136] The first transistor may include a first active layer 1121, a first gate electrode layer 1122, a first source electrode layer 1123, and a first drain electrode layer 1124.

[0137] The organic light-emitting element includes a first electrode layer 1310, a light-emitting layer 1320, and a second electrode layer 1340.

[0138] Here, the first electrode layer 1310 may be an anode electrode layer, and the second electrode layer 1340 may be a cathode electrode layer, but the embodiments of the present disclosure are not limited thereto.

[0139] Specifically, a first metal pattern 1127 may be disposed on the substrate 1100.

[0140] A first buffer layer 1111 may be disposed on the substrate 1100 and the first metal pattern 1127, and a second buffer layer 1111 may be disposed on the first buffer layer 1110.

[0141] The first active layer 1121 of the first transistor may be disposed on the second buffer layer 1111.

[0142] A first gate insulating layer 1112 may be disposed on the first active layer 1121, and a first gate electrode layer 1122 may be disposed on the first gate insulating layer 1112.

[0143] A first interlayer insulating layer 1113 may be disposed on the first gate electrode layer 1122, a third buffer layer 1114 may be disposed on the first interlayer insulating layer 1113, a second gate insulating layer 1115 may be disposed on the third buffer layer 1114, and a second interlayer insulating layer 1116 may be disposed on the second gate insulating layer 1115.

[0144] The first metal pattern 1128, the first source electrode layer 1123, and the first drain electrode layer 1124 may be disposed on the second interlayer insulating layer 1116.

[0145] The first source electrode layer 1123 and the first drain electrode layer 1124 may be disposed separately from each other on the second interlayer insulating layer 1116.

[0146] Each of the first source electrode layer 1123 and the first drain electrode layer 1124 can be in contact with the first active layer 1121 through holes formed in the first gate insulating layer 1112, the first interlayer insulating layer 1113, the third buffer layer 1114, the second gate insulating layer 1115, and the second interlayer insulating layer 1116.

[0147] As described above, the first transistor may be disposed on the substrate 1100, but the structure of the first transistor in the embodiments of the present disclosure is not limited thereto.

[0148] As another example, the first gate electrode layer 1122 may be disposed on the substrate 1100, the first active layer 1121 may be disposed on the first gate electrode layer 1122, the first source electrode layer 1123 may be disposed on the first active layer 1121 so as to overlap one end of the first active layer 1121, and the first drain electrode layer 1124 may be disposed on the first active layer 1121 so as to overlap the other end of the first active layer 1121.

[0149] The insulating layer 1210 may be disposed while covering the first transistor.

[0150] The insulating layer 1210 may be made of an organic material, but the embodiments of the present disclosure are not limited thereto.

[0151] The insulating layer 1210 may include a first insulating layer 1211, a second insulating layer 1212, and a third insulating layer 1213.

[0152] Specifically, a first insulating layer 1211 covering the first transistor may be disposed, a second insulating layer 1212 may be disposed on the first insulating layer 1211, and a third insulating layer 1213 may be disposed on the second insulating layer 1212.

[0153] However, it is not necessarily limited to this, and the insulating layer 1210 is not limited to a multilayer film, and may be an insulating layer composed of one layer.

[0154] The insulating layer 1210 may be disposed in a plurality of sub-pixels and may include a plurality of recesses 400 located in each of the plurality of sub-pixels.

[0155] FIG. 10 will be described by taking as an example the case where the insulating layer 1210 is disposed in the red sub-pixel R and the green sub-pixel G and includes a second recess 420 and a first recess 410 located in each of the red sub-pixel and the green sub-pixel.

[0156] The insulating layer 1210 may surround the recess 400 and include a peripheral portion located around the recess 400.

[0157] The recess 400 may be composed of a flat portion FLT and an inclined portion SLO surrounding the flat portion FLT and extending from the flat portion FLT.

[0158] Specifically, the second insulating layer 1212 may include the flat portion FLT, and the third insulating layer 1213 may include the inclined portion SLO. Therefore, an opening is formed over the entire thickness of the third insulating layer 1213 on the second insulating layer 1212, a part of the upper surface of the second insulating layer 1212 corresponding to the flat portion FLT is exposed, and a part of the side surface of the third insulating layer 1213 corresponding to the inclined portion SLO is exposed.

[0159] However, it is not necessarily limited to this, and one insulating layer 1210 may include both the flat portion FLT and the inclined portion SLO of the recess 400.

[0160] The flat part FLT of the recess 400 may be a part whose surface is parallel to the surface of the substrate 1100, and the inclined part SLO may be a part that surrounds the flat part FLT and whose surface has a predetermined angle with respect to the surface of the substrate 1100.

[0161] In other words, the surface of the inclined part SLO does not have to be parallel to the surface of the substrate 1100.

[0162] The first recess 410 may be composed of a first flat part FLT1 and a first inclined part SLO1 that surrounds the first flat part FLT1.

[0163] And the second recess 420 may be composed of a second flat part FLT2 and a second inclined part SLO2 that surrounds the second flat part FLT2.

[0164] Also, the insulating layer 1210 can include contact holes that are spaced apart from the recess 400.

[0165] And within at least one sub-pixel region, the first electrode layer 1310 is disposed on the peripheral portion of the insulating layer 1210 and on the recess 400.

[0166] Also, as described above, within at least one sub-pixel region, the insulating layer 1210 can include at least one contact hole spaced apart from the recess 400, and the first electrode layer 1310 of the first transistor and the organic light-emitting diode can be electrically connected through the contact hole of the insulating layer 1210.

[0167] A bank layer 1330 that is located on the insulating layer 1210 and includes an opening region OPN within at least one sub-pixel may be disposed.

[0168] The bank layer 1330 has an opening region OPN that exposes a part of the upper surface of the first electrode layer 1310 in a region overlapping with the recess 400.

[0169] The opening region OPN can correspond to a part of the flat part FLT.

[0170] That the opening region OPN corresponds to a part of the flat portion FLT can mean that the opening region OPN overlaps with a part of the flat portion FLT in the subpixel.

[0171] Therefore, at least one subpixel can have a region where the first electrode layer 1310 does not overlap with the bank layer 1330.

[0172] The opening region OPN can include a first opening region OPN1 and a second opening region OPN2.

[0173] The first opening region OPN1 in the first subpixel among the plurality of subpixels may be wider than the second opening region OPN2 in the second subpixel among the plurality of subpixels.

[0174] The light-emitting layer 1320 of the organic light-emitting element may be disposed on the first electrode layer 1310 that does not overlap with the bank layer 1330.

[0175] Such a light-emitting layer 1320 can be disposed on a part of the first electrode layer 1310 and the bank layer 1330.

[0176] The second electrode layer 1340 of the organic light-emitting element can be disposed on the light-emitting layer 1320.

[0177] On the other hand, the light-emitting layer 1320 of the organic light-emitting element can be formed by a deposition or coating method having linearity.

[0178] As an example, the light-emitting layer 1320 can be formed by a physical vapor deposition (PVD) method.

[0179] The thickness of the light-emitting layer 1320 formed in such a manner may be thinner in a region having a predetermined angle with respect to the substrate 1100 than in a region parallel to the substrate 1100.

[0180] Therefore, when the organic light-emitting device is driven, the current density is highest in the region where the thickness of the light-emitting layer 1320 is formed relatively thin, that is, the region corresponding to the inclined portion SLO of the recess 400, and a strong electric field can be applied in the region corresponding to the inclined portion SLO of the recess 400.

[0181] Therefore, the light-emitting characteristics of the organic light-emitting device in the region corresponding to the inclined portion SLO of the recess 400 and the light-emitting characteristics of the organic light-emitting device in the region corresponding to the flat portion FLT of the recess 400 may be different, and element degradation may occur.

[0182] Further, the light-emitting layer 1320 may include a red organic light-emitting layer 1320R disposed in the red subpixel R, a green organic light-emitting layer 1320G disposed in the green subpixel G, and a blue organic light-emitting layer 1320B disposed in the blue subpixel B.

[0183] FIG. 10 shows a case where the red organic light-emitting layer 1320R disposed in the second subpixel and the green organic light-emitting layer 1320G disposed in the first subpixel are used, but the present disclosure is not necessarily limited to such a configuration.

[0184] In the embodiment of the present disclosure, by arranging the bank layer 1330 so as to cover the inclined portion SLO of the recess 400, it is possible to prevent element degradation from occurring in the region corresponding to the inclined portion SLO of the recess 400 and prevent the phenomenon that the light-emitting characteristics are different for each region.

[0185] However, the thickness condition of the light-emitting layer 1320 in the embodiment of the present disclosure is not limited thereto, and the thickness of the light-emitting layer 1320 may also have a corresponding thickness for each position.

[0186] On the other hand, the first electrode layer 1310 may include a reflective metal.

[0187] FIG. 10 shows a configuration in which the first electrode layer 1310 is a single layer, but the embodiment of the present disclosure is not limited thereto and may be composed of multiple layers.

[0188] As an example, when the first electrode layer 1310 is composed of multiple layers, at least one layer can contain a reflective metal.

[0189] For example, the first electrode layer 1310 can contain at least any one of aluminium, neodymium, nickel, titanium, tantalium, copper (Cu), silver (Ag), and aluminium alloys, but the embodiments of the present disclosure are not limited thereto.

[0190] The second electrode layer 1340 can contain a conductive substance through which light is transmitted or semi-transmitted.

[0191] For example, it can contain at least one type of transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), zinc oxide, tin oxide, etc., or can contain a semi-transparent metal such as magnesium, silver (Ag), or an alloy of magnesium and silver.

[0192] Here, when the second electrode layer 1340 contains a semi-transparent metal, the thickness of the second electrode layer 1340 may be thinner than the thickness of the first electrode layer 1310.

[0193] On the other hand, on the substrate 1100, a first metal pattern 1127, a second metal pattern 1128 electrically connected to the first metal pattern 1127, and a third metal pattern 1129 located on the first insulating layer 1211 may be arranged.

[0194] The first metal pattern 1127 can perform the function of a capacitor or the function of blocking light coming in from the back.

[0195] The second metal pattern 1128 can contact the first metal pattern 1127 through holes formed in the first buffer layer 1110, the second buffer layer 1111, the first gate insulating layer 1212, the first interlayer insulating layer 1113, the third buffer layer 1114, the second gate insulating layer 1115, and the second interlayer insulating layer 1116.

[0196] The third metal pattern 1129 can contact the first source electrode layer 1123 through holes formed in the first insulating layer 1211, and can contact the first electrode layer 1310 through holes formed in the second insulating layer 1212 and the third insulating layer 1213.

[0197] In other words, the third metal pattern 1129 can serve to electrically connect the first source electrode layer 1123 and the first electrode layer 1310.

[0198] Also, as shown in FIG. 10, a storage capacitor Cst can be disposed in the active region A / A.

[0199] The storage capacitor Cst can include a first storage capacitor electrode layer 1125 disposed in the same layer as the first gate electrode layer 1122 and a second storage capacitor electrode layer 1126 disposed on the first interlayer insulating layer 1113. However, the structure of the storage capacitor Cst in the embodiments of the present disclosure is not limited thereto.

[0200] As shown in FIG. 10, the second storage capacitor electrode layer 1126 can form a capacitor with the second gate electrode layer 1131 of a second transistor different from the first transistor.

[0201] The second active layer 1131 of the second transistor may be disposed on the third buffer layer 1114.

[0202] The second gate insulating layer 1115 may be disposed on the second active layer 1131, and the second gate electrode layer 1131 may be disposed on the second gate insulating layer 1115.

[0203] On the second gate electrode layer 1131, a second interlayer insulating layer 1116 may be disposed, and an insulating layer 1210 may be disposed on the second interlayer insulating layer 1116.

[0204] On the second interlayer insulating layer 1116, a second source electrode layer 1132 and a second drain electrode layer 1133 may be disposed.

[0205] The second source electrode layer 1132 and the second drain electrode layer 1133 may be disposed separately from each other on the second interlayer insulating layer 1116.

[0206] Each of the second source electrode layer 1132 and the second drain electrode layer 1133 can contact the second active layer 1130 through holes formed in the second interlayer insulating layer 1116.

[0207] On the second electrode layer 1340 of the organic light-emitting element, at least one or more encapsulation layers 1350 may be disposed. As shown in FIG. 10, the encapsulation layer 1350 may be between the bank layer 1330 and the lens portion LEN.

[0208] The encapsulation layer 1350 can include a first encapsulation layer 1351 disposed on the second electrode layer 1340, a second encapsulation layer 1352 disposed on the first encapsulation layer 1351, and a third encapsulation layer 1353 disposed on the second encapsulation layer 1352.

[0209] Thus, when the encapsulation layer 1350 is composed of multiple layers, at least one layer can include an inorganic insulating material, and at least one other layer can include an organic insulating material.

[0210] In the embodiments of the present disclosure, the first encapsulation layer 1351 and the third encapsulation layer 1353 can include an inorganic insulating material, and the second encapsulation layer 1352 can include an organic insulating material, but the embodiments of the present disclosure are not limited thereto.

[0211] Such a sealing layer 1350 is disposed on the organic light-emitting element and can prevent moisture, foreign substances, etc. from penetrating into the organic light-emitting element.

[0212] A plurality of black matrices 220 may be disposed in the third sealing layer 1353.

[0213] The black matrix 220 may be formed of a material with a low reflectance.

[0214] For example, the black matrix 220 can include carbon black, a dye, or a resin.

[0215] A touch layer insulating layer 1370 may be disposed on the third sealing layer 1353 and the black matrix 220.

[0216] A plurality of touch sensors 210 may be disposed on the touch layer insulating layer 1370.

[0217] The touch sensor 210 may be transparent or opaque.

[0218] A planarization layer 1380 may be disposed on the plurality of touch sensors 210.

[0219] According to an embodiment of the present disclosure, the display device can extract the light confined to the substrate 1100 by total reflection or the like due to the planarization layer 1380 including the lens portion LEN, and can provide a display device with excellent luminance.

[0220] The refractive index of the planarization layer 1380 may be smaller than the refractive index of the plurality of lens portions LEN.

[0221] In this way, since the refractive index of the planarization layer 1380 is smaller than the refractive index of the plurality of lens portions LEN, the movement path of the light can be adjusted in a desired direction.

[0222] The lens unit LEN can include a first lens unit LEN1 corresponding to a first concave portion 410 disposed in the first sub-pixel and a second lens unit LEN2 corresponding to a second concave portion 420 disposed in the second sub-pixel.

[0223] Here, when the lens unit LEN corresponds to the concave portion 400, it can mean that, for example, in one sub-pixel, the lens unit LEN is positioned so as to overlap all or a partial region of the concave portion 400.

[0224] By the lens unit LEN being positioned in the region corresponding to the concave portion 400, for example, the light emitted from the light-emitting layer 1320 and emitted to the outside of the display device and the light emitted from the light-emitting layer 1320 and reflected by the reflective metal included in the first electrode layer 1310 positioned at the inclined portion SLO of the concave portion 400 and emitted to the outside of the display device can be effectively dispersed. That is, each lens unit LEN can overlap the corresponding concave portion 400.

[0225] The light dispersed by the lens unit LEN can be extracted to the outside of the display device without being totally reflected at the interface between the display device and the external air, so the luminance of the display device can be improved by the lens unit LEN.

[0226] It can include a color filter CF positioned between the touch buffer layer 1360 and the layer where the plurality of touch sensors 210 are disposed. As shown in FIG. 10, the touch sensor 210 may be in the same layer as the lens unit LEN, and the color filter CF may be in the same layer as the black matrix 220. Therefore, the touch sensor 210 and the lens unit LEN may be in different layers from the color filter CF and the black matrix 220.

[0227] In FIG. 10, a green color filter CF1 and a red color filter CF2 are disposed between the touch buffer layer 1360 and the layer where the plurality of touch sensors 210 are disposed.

[0228] By including a color filter CF located between the touch buffer layer 1360 and the layer in which a plurality of touch sensors 210 are arranged, a display device having high luminance efficiency can be provided.

[0229] It may include a plurality of connection patterns 1400 located in the layer in which the color filter CF and the black matrix 220 are arranged.

[0230] In FIG. 10, it is exemplarily explained that one connection pattern 1400 among the plurality of connection patterns 1400 is arranged between the green color filter CF1 and the red color filter CF2.

[0231] The connection pattern 1400 may include a first connection pattern 1410 located on the touch buffer layer 1360 and a second connection pattern 1420 that is electrically connected to at least one of the plurality of touch sensors 210.

[0232] The first connection pattern 1410 and the second connection pattern 1420 can be in contact with each other through holes formed in the touch layer insulating layer 1370. As shown in FIG. 10, the first connection pattern 1410 may be in the same layer as the color filter CF and the black matrix 220.

[0233] The outer contour of the planarization layer 1380 may include at least one dam 1500.

[0234] Specifically, the display device according to an embodiment of the present disclosure may include a first dam 1510 located on the outer contour of the sealing layer 1350 and a second dam 1520 located on the outer contour of the planarization layer 1380. As shown in FIG. 10, the end of the planarization layer 1380 contacts the second dam 1520. Further, the first dam 1510 may be closer to the substrate 1100 than the second dam 1520 and may be between the second dam 1520 and the bank layer 1330 in a cross-sectional view of the display device.

[0235] In the present disclosure, the first dam 1510 and the second dam 1520 respectively mean a lower dam and an upper dam.

[0236] In FIG. 10, the dam 1500 is shown as including a first dam 1510 and a second dam 1520. However, embodiments of the present disclosure are not limited thereto, and the number of dams 1500 can be appropriately changed according to the size of the display device.

[0237] Also, in FIG. 10, the partition wall of the first dam 1510 is shown as having two, and the partition wall of the second dam 1520 is shown as having one. However, embodiments of the present disclosure are not limited thereto, and a dam composed of several partition walls may be used.

[0238] Here, since the planarization layer 1380 disposed for planarizing the lens unit LEN is formed by inkjet printing, by disposing the second dam 1520, it is possible to prevent ink from leaking to the outer contour of the first dam 1510 during inkjet printing.

[0239] One or more touch lines 300 may be disposed on the touch interlayer insulating layer 1370.

[0240] The touch sensor 210 is electrically connected via the connection pattern 1400 and can form one driving touch electrode line or one sensing touch electrode line.

[0241] In FIG. 10, the touch sensor 210 and the touch line 300 are shown as being located in the same layer. However, the present disclosure is not limited thereto, and the touch sensor 210 and the touch line 300 can also be located in different layers from each other.

[0242] The touch line 300 is located on the first dam 1510 and extends to the pad portion 500 located on the outer contour of the first dam 1510.

[0243] Such a touch line 300 is electrically connected to the pad portion 500.

[0244] Specifically, the touch line 300 can be electrically connected to a pad portion 500 provided in the non-active region N / A.

[0245] The pad portion 500 to which the touch line 300 is connected can be connected to a touch sensing circuit (not shown).

[0246] The touch sensing circuit (not shown) can supply a touch drive signal to at least one of the plurality of touch sensors 200 and can sense at least one of the presence or absence of a touch and the touch position in response to the touch drive signal.

[0247] The touch line 300, the touch interlayer insulating layer 1370, the touch buffer layer 1360, and the encapsulation layer 1350 may be arranged to overlap on the first dam 1510, but this is exemplary and they may be arranged in other ways.

[0248] A passivation layer 1390 may be arranged on the planarization layer 1380 and the second dam 1520.

[0249] The passivation layer 1390 can prevent penetration of moisture or foreign substances and can prevent substances such as metals from reacting with moisture in the air and corroding.

[0250] FIG. 11 is a cross-sectional view taken along line B-B' of FIG. 9a according to an embodiment of the present disclosure.

[0251] The first insulating layer (not shown) in FIG. 11, the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light-emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer (not shown), the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 210 may be substantially the same as the first insulating layer 1211, the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light-emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer 1360, the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 200 described in FIG. 10.

[0252] Referring to FIG. 11, in FIG. 9a, when the recess 410 disposed in the first sub-pixel surrounds the vicinity of two points where a virtual straight line passing through the center point of the opening region OPN1 in the first sub-pixel and parallel to the second direction SD contacts the boundary of the opening region OPN1 in the first sub-pixel, wide light extraction is performed in the second direction SD by the recess 410, and by improving the luminance viewing angle in the second direction SD, a wide viewing angle mode desired by the user can be realized.

[0253] FIG. 12 is a cross-sectional view taken along the line C-C' of FIG. 9a according to an embodiment of the present disclosure.

[0254] The first insulating layer (not shown) in FIG. 12, the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light-emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer (not shown), the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 210 may be substantially the same as the first insulating layer 1211, the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light-emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer 1360, the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 200 described in FIG. 10.

[0255] Referring to FIG. 12, in FIG. 9a, when the virtual straight line passing through the center point of the opening region OPN1 in the first sub-pixel and aligned with the first direction FD does not surround the vicinity of the two points where it contacts the boundary of the opening region OPN1 in the first sub-pixel, the viewing angle in the first direction FD is decreased by the first lens portion LEN1, and a wide viewing angle mode desired by the user can be realized.

[0256] FIG. 13 is a cross-sectional view taken along the line D-D' of FIG. 9c according to an embodiment of the present disclosure.

[0257] The first insulating layer (not shown), the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer (not shown), the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 210 in FIG. 13 may be substantially the same as the first insulating layer 1211, the second insulating layer 1212, the third insulating layer 1213, the first electrode layer 1310, the light emitting layer 1320, the bank layer 1330, the second electrode layer 1340, the encapsulation layer 1350, the touch buffer layer 1360, the touch interlayer insulating layer 1370, the planarization layer 1380, the first lens portion LEN1, and the touch sensor 200 described in FIG. 10.

[0258] Referring to FIG. 13, as shown in FIG. 9c, the first lens portion LEN1 covers the opening region OPN1 in the first sub-pixel and can cover only a part of the recess 410 disposed in the first sub-pixel.

[0259] When designed as the first lens portion LEN1 of FIG. 9c described above, the first lens portion LEN1 extracts the light emitted through the opening region OPN1 in the first sub-pixel, and the light emitted by the first recess 410 is not extracted by the first lens portion LEN1.

[0260] Therefore, since the light emitted by the first concave portion 410 will not be extracted by the first lens portion LEN1, the luminance efficiency decreases, but the viewing angle in the second direction SD becomes larger, and an enhanced wide viewing angle mode can be realized.

[0261] Briefly explaining the embodiments of the present disclosure described above, it is as follows.

[0262] The display device according to an embodiment of the present disclosure is located on a substrate and includes a plurality of concave portions respectively located in each of a plurality of sub-pixels, and an insulating layer in which the area of a first concave portion disposed in a first sub-pixel among the plurality of sub-pixels is larger than the area of a second concave portion disposed in a second sub-pixel among the plurality of sub-pixels, and a plurality of lens portions located on the insulating layer and including a first lens portion corresponding to the first concave portion and a second lens portion corresponding to the second concave portion.

[0263] In the display device according to an embodiment of the present disclosure, it may further include a sealing layer located on the plurality of sub-pixels and disposed under the plurality of lens portions, and a planarization layer located on the plurality of lens portions and covering at least a part of the side surface of the sealing layer.

[0264] In the display device according to an embodiment of the present disclosure, the refractive index of the planarization layer may be smaller than the refractive index of the plurality of lens portions.

[0265] In the display device according to an embodiment of the present disclosure, it may further include at least one upper dam located on the outer contour of the planarization layer.

[0266] In the display device according to an embodiment of the present disclosure, it may further include at least one lower dam located on the outer contour of the sealing layer and located between at least one upper dam and the active region.

[0267] In the display device according to an embodiment of the present disclosure, it may further include a plurality of touch sensors located on a layer where the plurality of lens portions are disposed on the sealing layer and disposed in at least a partial region of a region other than the region where the plurality of lens portions are disposed.

[0268] In the display device according to an embodiment of the present disclosure, a color filter may be further included between the encapsulation layer and the layer in which a plurality of touch sensors are disposed.

[0269] In the display device according to an embodiment of the present disclosure, a plurality of black matrices may be further included, which are located on the layer in which the color filter is disposed on the encapsulation layer and are disposed in at least a part of the region other than the region where the color filter is disposed.

[0270] In the display device according to an embodiment of the present disclosure, a plurality of connection patterns may be further included, which are located on the layer in which the color filter and the black matrix are disposed and are electrically connected to at least one of the plurality of touch sensors.

[0271] The display device according to an embodiment of the present disclosure includes an insulating layer located on a substrate, disposed in a plurality of sub-pixels, and including a plurality of recesses formed by a flat portion and an inclined portion surrounding the flat portion within the sub-pixels, and a bank layer located on the insulating layer, including an opening region within the sub-pixels, the opening region being surrounded by the inclined portion. The opening region within the first sub-pixel among the plurality of sub-pixels is wider than the opening region within the second sub-pixel among the plurality of sub-pixels. The recess disposed in the first sub-pixel surrounds a part within the opening region of the first sub-pixel, and the recess disposed in the second sub-pixel surrounds the opening region within the second sub-pixel. The display device may include a plurality of lens portions located on the insulating layer and including a first lens portion corresponding to the recess disposed in the first sub-pixel and a second lens portion corresponding to the recess disposed in the second sub-pixel.

[0272] In a display device according to an embodiment of the present disclosure, in a plan view defined by a first direction and a second direction orthogonal to the first direction, a virtual straight line parallel to the first direction passing through the center point of the opening region in the first sub-pixel is longer than the distance between two points where the virtual straight line parallel to the first direction passing through the center point of the opening region in the first sub-pixel contacts the boundary of the opening region in the first sub-pixel, and the recess disposed in the first sub-pixel can surround the vicinity of two points where the virtual straight line parallel to the second direction passing through the center point of the opening region in the first sub-pixel contacts the boundary of the opening region in the first sub-pixel.

[0273] In a display device according to an embodiment of the present disclosure, in a plan view defined by a first direction and a second direction orthogonal to the first direction, the distance between two points where a virtual straight line parallel to the first direction passing through the center point of the opening region in the second sub-pixel contacts the boundary of the opening region in the second sub-pixel and the distance between two points where a virtual straight line parallel to the second direction passing through the center point of the opening region in the second sub-pixel contacts the boundary of the opening region in the second sub-pixel may be the same.

[0274] The display device according to an embodiment of the present disclosure may further include a plurality of touch sensors disposed in at least a part of a region other than a region where a plurality of lens portions are disposed and located on the insulating layer.

[0275] The display device according to an embodiment of the present disclosure may further include a plurality of black matrices disposed in at least a part of a region other than a region where a plurality of lens portions are disposed and located on the insulating layer.

[0276] The display device according to an embodiment of the present disclosure may further include a plurality of connection patterns electrically connected to at least one of the plurality of touch sensors.

[0277] In a display device according to an embodiment of the present disclosure, the first lens portion can cover the opening region in the first sub-pixel and the recess disposed in the first sub-pixel.

[0278] In the display device according to an embodiment of the present disclosure, the first lens unit can cover the opening region in the first sub-pixel and only cover a part of the recess disposed in the first sub-pixel.

[0279] The above description is merely illustrative of the technical idea of the present disclosure, and various modifications and variations are possible for those with ordinary knowledge in the technical field to which the present disclosure pertains without departing from the essential characteristics of the present disclosure. In addition, the embodiments disclosed in the present disclosure are for the purpose of explaining rather than limiting the technical idea of the present disclosure, so the scope of the technical idea of the present disclosure is not limited by such embodiments.

Description of Reference Numerals

[0280] 100: Display device 200, 210: Touch sensor 220: Black matrix 300: Touch line 400: Recess 410: First recess 420: Second recess 500: Pad portion PG1: First pixel group PG2: Second pixel group SP1: First sub-pixel SP2: Second sub-pixel LEN1: First lens unit LEN2: Second lens unit OPN1: First opening region OPN2: Second opening region 1100: Substrate 1110: First buffer layer 1111: Second buffer layer 1112: First gate insulating layer 1113: First interlayer insulating layer 1114: Third buffer layer 1115: Second gate insulating layer 1116: Second interlayer insulating layer 1121: First active layer 1122: First gate electrode layer 1123: First source electrode layer 1124: First drain electrode layer 1125: First storage capacitor electrode layer 1126: Second storage capacitor electrode layer 1127: First metal pattern 1128: Second metal pattern 1129: Third Metal Pattern 1130: Second Active Layer 1131: Second Gate Electrode Layer 1132: Second Source Electrode Layer 1133: Second Drain Electrode Layer 1210: Insulating Layer 1211: First Insulating Layer 1212: Second Insulating Layer 1213: Third Insulating Layer 1310: First Electrode Layer 1320: Light-Emitting Layer 1330: Bank Layer 1340: Second Electrode Layer 1350: Encapsulation Layer 1351: First Encapsulation Layer 1352: Second Encapsulation Layer 1353: Third Encapsulation Layer 1360: Touch Buffer Layer 1370: Touch Interlayer Insulating Layer 1380: Planarization Layer 1390: Passivation Layer 1400: Connection Pattern 1410: First Connection Pattern 1420: Second Connection Pattern 1500: Dam 1510: First Dam 1520: Second Dam CF1: First Color Filter CF2: Second Color Filter FLT1: First Flat Part FLT2: Second Flat Part SLO1: First Slanted Part SLO2: Second Slanted Part

Claims

1. A substrate including a plurality of subpixels; an insulating layer on the substrate, the insulating layer including a plurality of recesses extending therethrough, the plurality of recesses including a first recess in a first subpixel of the plurality of subpixels and a second recess in a second subpixel of the plurality of subpixels; a bank layer on the insulating layer, the bank layer including a plurality of opening regions, the plurality of opening regions including a first opening region overlapping the first recess and a second opening region overlapping the second recess; and a plurality of lens portions on the insulating layer and the bank layer, the plurality of lens portions including a first lens portion overlapping the first recess and the first opening region and a second lens portion overlapping the second recess and the second opening region; Equipped with A display device, wherein an area of ​​the first recess is larger than an area of ​​the second recess.

2. a sealing layer between the bank layer and the lens portions; and a planarization layer on the plurality of lens portions, the planarization layer covering at least a portion of a side surface of the sealing layer; The display device of claim 1 further comprising:

3. The display device according to claim 2 , wherein the refractive index of the planarization layer is smaller than the refractive index of the plurality of lens portions.

4. The display of claim 2 further comprising at least one upper dam contacting an edge of the planarization layer.

5. The display device of claim 4, further comprising at least one lower dam closer to the substrate than the at least one upper dam, the at least one lower dam being between the at least one upper dam and the bank layer in a cross-sectional view of the display device.

6. The display device according to claim 2 , further comprising a plurality of touch sensors in the same layer as the plurality of lens portions.

7. The display device according to claim 6 , further comprising a color filter located between the sealing layer and a layer on which the plurality of touch sensors and the plurality of lens portions are arranged.

8. The display device according to claim 7 , further comprising a plurality of black matrices that are in the same layer as the color filters and do not overlap with the plurality of lens portions.

9. The display device according to claim 8 , further comprising a plurality of connection patterns in the same layer as the color filters and the plurality of black matrices, and electrically connected to at least one of the plurality of touch sensors.

10. substrate, an insulating layer on the substrate, the insulating layer including a plurality of recesses extending through the insulating layer and within a plurality of subpixels, each of the plurality of recesses including a flat portion and a sloped portion extending from and surrounding the flat portion; a bank layer on the insulating layer, the bank layer including a plurality of open regions each within a corresponding one of the subpixels, the plurality of open regions including a first open region surrounded by a first recess of the plurality of recesses and within a first one of the subpixels, and a second open region surrounded by a second recess of the plurality of recesses and within a second one of the subpixels; and a plurality of lens portions on the bank layer and the insulating layer, the plurality of lens portions including a first lens portion overlapping the first opening region and the first recess, and a second lens portion overlapping the second opening region and the second recess; Equipped with A display device, wherein the first opening area is larger than the second opening area.

11. In a plan view of the display device defined by a first direction and a second direction perpendicular to the first direction, a first distance between a pair of first points at which a first virtual line passing through a center point of the first opening region in the first subpixel and aligned with the second direction touches a boundary of the first opening region in the first subpixel is longer than a second distance between a pair of second points at which a second virtual line passing through a center point of the first opening region in the first subpixel and aligned with the first direction touches a boundary of the first opening region in the first subpixel, 11. The display device of claim 10, wherein the first recess of the first subpixel surrounds the pair of first points at which the first virtual straight line that passes through a center point of the first opening region in the first subpixel and is aligned with the second direction touches a boundary of the first opening region in the first subpixel.

12. 11. The display device of claim 10, wherein in a plan view of the display device defined by a first direction and a second direction perpendicular to the first direction, a first distance between a pair of first points where a first virtual line passing through a center point of the second opening region in the second subpixel and aligned with the first direction touches a boundary of the second opening region in the second subpixel, and a second distance between a pair of second points where a second virtual line passing through a center point of the second opening region in the second subpixel and aligned with the second direction touches the boundary of the second opening region in the second subpixel are the same.

13. The display device according to claim 10 , further comprising a plurality of touch sensors that do not overlap with the plurality of lens portions in a plan view of the display device.

14. The display device of claim 13 , further comprising a plurality of black matrices overlapping the plurality of touch sensors.

15. The display device according to claim 14 , further comprising a plurality of connection patterns electrically connected to at least one of the plurality of touch sensors.

16. The display device according to claim 10 , wherein a width of the first lens portion is larger than a width of the first opening region in the first sub-pixel and is larger than a width of the first recessed portion in the first sub-pixel.

17. The display device according to claim 10 , wherein a width of the first lens portion is smaller than a width of the first opening region in the first sub-pixel and smaller than a width of the first recessed portion in the first sub-pixel.

18. substrate, a plurality of transistors on the substrate, the plurality of transistors including a first transistor; a first insulating layer over the plurality of transistors, the first insulating layer including a first recess extending through the first insulating layer; a first light emitting element in the first recess, the first light emitting element connecting to the first transistor and including a first electrode layer in the first recess, a first light emitting layer on the first electrode layer in the first recess, and a first portion of a second electrode layer on the first light emitting layer in the first recess; a bank layer on the first insulating layer, the bank layer including a first open region extending into the first recess; and a plurality of lens portions on the first insulating layer, the plurality of lens portions including a first lens portion overlapping the first recess and the first opening region; A display device comprising:

19. a second insulating layer between the first insulating layer and the plurality of transistors; 19. The display device of claim 18, wherein the first recess includes a first flat portion corresponding to a first portion of the upper surface of the second insulating layer exposed by the first recess, and a first inclined portion of the first insulating layer surrounding the first flat portion and extending from the first flat portion.

20. the plurality of transistors further includes a second transistor; the first insulating layer further includes a second recess extending through the first insulating layer; the bank layer further includes a second opening region extending into the second recess; The display device according to claim 18 , wherein the plurality of lens portions further include a second lens portion overlapping the second recess and the second opening region.

21. The display device according to claim 20 , wherein an area of ​​the first recess is larger than an area of ​​the second recess.

22. The display device according to claim 20 , wherein a width of the first opening region is smaller than a width of the second opening region.

23. The display device of claim 18 , further comprising a color filter between the first lens portion and the first light emitting element.

24. A plurality of touch sensors on the same layer as the plurality of lens portions; and further comprising a plurality of black matrices on the same layer as the color filters; The display device of claim 23 , wherein the black matrices overlap the touch sensors and do not overlap the lens portions.

25. The display device according to claim 18 , wherein an end of the first light-emitting layer is between the bank layer and the first electrode layer.

26. The display device according to claim 18 , wherein a width of the first lens portion is larger than a width of the first opening region and is larger than a width of the first recessed portion.

27. The display device according to claim 18 , wherein a width of the first lens portion is smaller than a width of the first opening region and smaller than a width of the first recessed portion.

Images