Indication 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, etc.

[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 with improved light extraction efficiency.

[0011] The embodiments of this disclosure can provide a display device that can be driven with low power due to its high brightness characteristics. [Means for solving the problem]

[0012] Embodiments of the present disclosure provide a display device comprising: a substrate including a plurality of subpixels; an insulating layer on the substrate including a plurality of recesses extending through the insulating layer, wherein the plurality of recesses include a first recess in a first subpixel among the plurality of subpixels and a second recess in a second subpixel among the plurality of subpixels; a bank layer on the insulating layer including a plurality of aperture regions, wherein the plurality of aperture regions include a first aperture region overlapping the first recess and a second aperture region overlapping the second recess; and a plurality of lens portions on the insulating layer and the bank layer, wherein the plurality of lens portions include a first lens portion overlapping the first recess and the first aperture region and a second lens portion overlapping the second recess and the second aperture region, and the area of ​​the first portion is larger than the area of ​​the second recess.

[0013] Embodiments of the present disclosure provide a display device comprising a substrate, an insulating layer on the substrate, the insulating layer including a plurality of recesses extending through the insulating layer and located within a plurality of subpixels, each of which includes a flat portion and a sloped portion extending from the flat portion and surrounding the flat portion; a bank layer on the insulating layer, each of which includes a plurality of aperture regions located within a corresponding subpixel among the plurality of subpixels, each of which includes a first aperture region surrounded by a first recess among the plurality of recesses and located within a first subpixel among the plurality of subpixels, and a second aperture region surrounded by a second recess among the plurality of recesses and located within a second subpixel among the plurality of subpixels; and a plurality of lens portions on the bank layer and the insulating layer, each including a first lens portion overlapping the first aperture region and the first recess, and a second lens portion overlapping the second aperture region and the second recess, wherein the first aperture region is wider than the second aperture region.

[0014] Embodiments of the present disclosure provide a display device comprising 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 through the first insulating layer, a first light-emitting element located in the first recess, the first light-emitting element connected to the first transistor, the first light-emitting element 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 aperture 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 aperture region.

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

[0016] According to the embodiments of this disclosure, a display device that can be driven with low power due to its high brightness characteristics can be provided. [Brief explanation of the drawing]

[0017] [Figure 1a] This is an example of one embodiment of the present disclosure, and is a plan view of the narrow viewing angle mode, one of the switchable privacy modes. [Figure 1b] This is another example according to one embodiment of the present disclosure, a plan view of the wide-viewing-angle mode among the switchable privacy modes. [Figure 2] This is an illustrative diagram of a display device in which a display device according to an embodiment of the present disclosure senses touch using a self-capacitance-based touch sensing method. [Figure 3] This is a plan view showing subpixels arranged in the active area of ​​a display device according to one embodiment of the present disclosure. [Figure 4]A plan view showing sub-pixels arranged in an active area of a display device according to another embodiment of the present disclosure. [Figure 5] A plan view showing an enlarged view of the PG1 region of FIG. 3 according to an embodiment of the present disclosure. [Figure 6] A plan view showing an enlarged view of the PG2 region of FIG. 4 according to an embodiment of the present disclosure. [Figure 7] A plan view showing an operation method of a display device according to a mode in a privacy mode capable of mode switching in a display device according to an embodiment of the present disclosure. [Figure 8a] A perspective view showing a first lens unit of a display device according to an embodiment of the present disclosure. [Figure 8b] A perspective view showing a second lens unit of a display device according to an embodiment of the present disclosure. [Figure 9a] A plan view showing an enlarged view of an embodiment of SP1 in FIG. 5 according to an embodiment of the present disclosure. [Figure 9b] A plan view showing an enlarged view of an embodiment of SP2 in FIG. 5 according to an embodiment of the present disclosure. [Figure 9c] A plan view showing an enlarged view of another embodiment of SP1 in FIG. 5 according to an embodiment of the present disclosure. [Figure 10] A cross-sectional view taken along A-A' of FIG. 6 according to an embodiment of the present disclosure. [Figure 11] A cross-sectional view taken along B-B' of FIG. 9a according to an embodiment of the present disclosure. [Figure 12] A cross-sectional view taken along C-C' of FIG. 9a according to an embodiment of the present disclosure. [Figure 13] A cross-sectional view taken along D-D' of FIG. 9c according to an embodiment of the present disclosure.

Mode for Carrying Out the Invention

[0018] Some embodiments of this disclosure will be described in detail below with reference to illustrative drawings. In assigning reference numerals to components in each drawing, the same reference numerals may be used for the same component, even if they appear in different drawings, as far as possible. In describing this disclosure, if a specific description of a relevant known configuration or function is deemed to obscure the gist of this disclosure, such detailed description may be omitted. Where "includes," "has," "performs," ​​etc., as used herein, other parts may be added unless "only" is used. Where a component is expressed singularly, it may include multiple components unless otherwise explicitly stated.

[0019] In addition, terms such as 1, 2, A, B, (a), and B may be used to describe the components of this disclosure. These terms are used to distinguish a component from other components, and the terms do not limit the nature, order, procedure, or number of the components.

[0020] In descriptions of the positional relationships of components, when it is stated that two or more components are "linked," "joined," or "connected," it should be understood that while two or more components can directly "link," "join," or "connect," they can also be "linked," "joined," or "connected" through the "intermediation" of another component. Here, the other component may be included in one or more of the two or more components that are "linked," "joined," or "connected" to each other.

[0021] In descriptions of temporal relationships concerning constituent elements, operating methods, or manufacturing methods, if the temporal sequence or flow of relationships is described using phrases such as "after," "following," "after," or "before," it can include non-continuous cases unless "immediately" or "directly" is used.

[0022] On the other hand, when referring to numerical values ​​or corresponding information (e.g., levels) for components, it can be interpreted that these numerical values ​​or corresponding information include a range of errors that may arise due to various factors (e.g., process factors, internal or external shocks, noise, etc.), even without further explicit mention.

[0023] Various embodiments of this disclosure will be described in detail below with reference to the attached drawings.

[0024] Figures 1a and 1b are plan views of an example according to one 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 in front of the passenger seat, and the switchable privacy mode is in the narrow-viewing-angle mode and wide-viewing-angle mode.

[0025] As shown in Figures 1a and 1b, the display device 100, which can switch between a wide-viewing-angle mode and a narrow-viewing-angle mode, can be installed in front of the passenger seat of a car.

[0026] However, the display device 100 is not limited to being installed in 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. Furthermore, it is not limited to being installed in an automobile, but can be applied to any location where privacy protection is necessary.

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

[0028] In other words, only the passenger in the front passenger seat has a clear field of view, while the driver in the driver's seat does not, thus protecting the privacy of the passenger in the front passenger seat. Therefore, while in narrow field of view mode, an image with the first field of view is displayed.

[0029] As shown in Figure 1b, while in wide-viewing-angle mode, the display device 100 provides an image that can be shared by both passengers and drivers by providing an image with a brightness of 1% or more to both passengers and drivers.

[0030] In other words, in wide-angle mode, the field of view is ensured not only for passengers in the front passenger seat but also for the driver in the driver's seat. Therefore, while in wide-angle mode, an image with a second field of view that is larger than the first field of view is displayed.

[0031] Figure 2 is an illustrative diagram of the display device 100 when the display device according to the embodiment of this disclosure senses touch using a self-capacitance-based touch sensing method.

[0032] Referring to Figure 2, in the case of a self-capacitance-based touch sensing method, each touch sensor 200 placed on 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 drive signal is applied to each touch sensor 200, and a sensing signal is received through the touch sensor 200 to which the drive signal is applied.

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

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

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

[0037] The pad 500 to which the touch line 300 is connected can be connected to a touch sensing circuit (not shown).

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

[0039] Referring to Figure 2, multiple touch sensors 200 can be positioned on multiple subpixels located on the substrate.

[0040] The arrangement of multiple subpixels shown in Figure 2 is illustrative and not necessarily limited to this arrangement.

[0041] Referring to Figure 2, each of the multiple touch sensors 200 may, for example, have a rhombus-shaped outline, or in some cases a rectangle (which may include a square), or it may consist of various other shapes.

[0042] Figure 2 illustrates a self-capacitance-based touch sensing method, but this is illustrative and the touch sensing method of the display device 100 is not necessarily limited to this. Another example is a mutual capacitance-based touch sensing method.

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

[0044] Figure 3 is a plan view showing subpixels arranged in the active region of a display device according to one embodiment of the present disclosure.

[0045] Referring to Figure 3, the pixels located in the active area A / A of the display device 100 may include subpixels of different colors in order to embody the colors of the image.

[0046] Subpixels may include red subpixels R, green subpixels G, and blue subpixels B.

[0047] Each subpixel may further contain white subpixels, but Figure 3 illustrates the case where it contains red subpixel R, green subpixel G, and blue subpixel B as an example.

[0048] Furthermore, subpixels can include subpixels with different areas from each other in order to implement a switchable privacy mode.

[0049] As an example, multiple subpixels, including a first subpixel and a second subpixel having a smaller area than the first subpixel, can be located within the active region A / A on a plane defined by the first direction FD and the second direction SD, and are situated on the substrate.

[0050] Thus, by designing the subpixels included in the first pixel group PG1 to have different sizes and arrangements among the subpixels arranged in the active area A / A of the display device 100 in Figure 3, a privacy mode system that can switch between a wide viewing angle mode and a narrow viewing angle mode can be realized.

[0051] However, the subpixel size and arrangement procedure for realizing a switchable privacy mode are not limited to this, but Figure 3 illustrates an example where the first pixel group PG1 has four first subpixels with a large area and fourteen second subpixels with a small area.

[0052] Furthermore, each subpixel may include a pixel circuit and a light-emitting element.

[0053] Referring to Figure 3, multiple touch sensors 200 may be arranged in at least a portion of the region other than the region where multiple subpixels are located. That is, the multiple touch sensors 200 do not overlap with the subpixels from a planar perspective.

[0054] The multiple touch sensors 200 shown in Figure 3 can operate using a self-capacitance-based touch sensing method, a mutual capacitance-based touch sensing method, and various other touch sensing methods to which the touch sensors 200 can be applied.

[0055] Furthermore, the arrangement of the multiple touch sensors 200 shown in Figure 3 is illustrative to demonstrate that they are located in at least a portion of the area other than the area where the multiple subpixels are located. The arrangement or shape is not necessarily limited to this, and the touch sensors 200 may cover the entire area of ​​the active area A / A, or partially, and there may be cases where no touch sensors 200 are located.

[0056] Multiple touch sensors may be arranged in a mesh-like configuration with openings depending on the arrangement of each subpixel.

[0057] The multiple touch sensors in Figure 3 may have an opening depending on the arrangement of the lens portion positioned above each subpixel, and may have a shape in which at least two openings are connected.

[0058] Furthermore, to enhance touch sensor sensing, for small subpixels, the subpixels are positioned within the aperture of the touch sensor. However, for relatively large or rectangular subpixels that cannot be positioned within the same aperture, the touch sensor can be positioned parallel to the longer side of the subpixel. Multiple touch sensors can be formed independently according to the shape and arrangement of each subpixel, and each touch sensor is electrically connected by a connection pattern (not shown).

[0059] Figure 4 is a plan view showing subpixels arranged in the active region of a display device according to another embodiment of the present disclosure.

[0060] Referring to Figure 4, it is possible to include multiple black matrices 220 located in at least a portion of the region other than the region where multiple subpixels are located within the active region A / A of Figure 3.

[0061] Referring to Figure 4, multiple touch sensors 210 are arranged in at least a portion of the region other than the region where multiple subpixels are arranged, and multiple black matrices 220 are arranged in at least a portion of the region other than the region where multiple subpixels are arranged, and the multiple touch sensors 210 and the multiple black matrices 220 can overlap each other in some areas. That is, the touch sensors 210 and the black matrices 220 do not overlap with the subpixels and the lens portion LEN. Here, the multiple black matrices 220 may be in the form of a mesh with openings of different sizes and shapes depending on the arrangement of each subpixel which has a different size and shape. In the case of subpixels in which the touch sensors are arranged parallel to the long side of the subpixel, the black matrices 220 are also arranged parallel to the long side of the subpixel to cover the touch sensor, and the short side of the subpixel does not need to be surrounded by the black matrix.

[0062] However, this is merely an example and not necessarily limiting. Various arrangements are possible, such as arranging the touch sensor 210 and the black matrix 220 so that they completely overlap in a plan view defined by the first direction FD and the second direction SD, or so that they do not overlap.

[0063] Furthermore, within the active region A / A, only the black matrix 220 may be placed on multiple subpixels, only the touch sensor 210 may be placed, or neither the black matrix 220 nor the touch sensor 210 may be placed.

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

[0065] Referring to Figure 5, it is possible to include multiple recesses 400 located in each of multiple subpixels.

[0066] The first pixel group PG1 can include a plurality of first subpixels SP1 and a plurality of second subpixels SP2.

[0067] Some of the subpixels SP1 and SP2 can emit light of different colors from each other.

[0068] For example, the first subpixel SP1 consists of a red subpixel R, a green subpixel G, and a blue subpixel B, and can emit light having red, green, and blue properties, respectively.

[0069] For example, the second subpixel SP2 consists of a red subpixel R, a green subpixel G, and a blue subpixel B, and can emit light having red, green, and blue properties, respectively.

[0070] The plan view in Figure 5, showing the arrangement of subpixels SP1, SP2, and red subpixel R, green subpixel G, and blue subpixel B, is illustrative and not necessarily limited to this arrangement; various combinations are possible.

[0071] Subpixels that emit light of different colors may include aperture regions having different areas.

[0072] For example, the area of ​​the aperture region emitting blue light may be the largest, and the area of ​​the aperture region emitting red light may be the smallest.

[0073] This is because the elemental characteristics of the light-emitting elements contained within subpixels that emit light of different colors are different from each other.

[0074] However, this is not necessarily the only option; the area of ​​the opening region may be the same regardless of color.

[0075] Referring to Figure 5, a recess located in the first subpixel SP1 can surround a portion of the aperture region within the first subpixel, and a recess located in the second subpixel SP2 can surround the aperture region within the second subpixel.

[0076] Here, the fact that the recess surrounds the second subpixel means that, in a plan view defined by the first direction FD and the second direction SD, it completely surrounds the outer edge of the aperture region within the second subpixel.

[0077] Figure 6 is a plan view showing an enlarged view of the PG2 region in Figure 4 according to an embodiment of the present disclosure.

[0078] Referring to Figure 6, the second pixel group PG2 can be considered as the first pixel group PG1 in Figure 5 with the black matrix 220 added.

[0079] The details regarding the multiple subpixels and the recesses located within each of the multiple subpixels in Figure 6 may be substantially the same as those described in Figure 5 regarding the multiple subpixels and the recesses located within each of the multiple subpixels.

[0080] Figure 7 is a plan view showing the operation method of the display device 100 according to an embodiment of the present disclosure, in which the display device operates depending on the mode in the mode-switchable privacy mode.

[0081] Figure 7 illustrates the case where the second pixel group PG2 in Figure 6 is the case, but this is merely an example to illustrate the switchable privacy mode and does not necessarily apply only to the second pixel group PG2; it can also be applied to the first pixel group PG1, and can be applied to other pixel groups as well.

[0082] Referring to Figure 7, the system can be switched between wide-angle and narrow-angle modes for the convenience of the user (for example, the passenger or driver in Figures 1a and 1b).

[0083] In wide-viewing-angle mode, to ensure a wide viewing angle, light is emitted from the light-emitting area of ​​the larger first subpixel SP1, and it is not necessary (OFF) for light to be emitted from the light-emitting area of ​​the smaller second subpixel SP2 than the first subpixel SP1.

[0084] In narrow viewing angle mode, light may not be emitted from the large light-emitting area of ​​the first subpixel SP1 due to the narrow viewing angle (OFF), and light may be emitted from the light-emitting area of ​​the second subpixel SP2, which has a smaller area than the first subpixel SP1.

[0085] When the display device 100 is installed in front of the passenger seat, the wide-viewing-angle mode ensures visibility not only for the passenger in the passenger seat but also for the driver in the driver's seat. In other words, both the passenger and the driver can see the image while the wide-viewing-angle mode is active.

[0086] In narrow-angle mode, only the passenger in the front passenger seat has a field of view, while the driver in the driver's seat does not, thus protecting the privacy of the passenger in the front passenger seat only. In other words, while in narrow-angle mode, the driver cannot see the image, and only the passenger can see it.

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

[0088] Referring to Figure 8a, the first lens portion LEN1 corresponding to the first subpixel SP1 may have a semi-cylindrical shape with 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 section 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 portion LEN1 in Figure 8a is semi-cylindrical, this is merely an example and is not necessarily limited to this shape. Various shapes are possible depending on the shape of the aperture region of the first subpixel SP1.

[0091] For example, the height C3 of the third direction TD may be half the diameter C1 of the first direction FD, but is not necessarily limited to this, and may be greater or less than half the diameter C1 of the first direction FD.

[0092] Referring to Figure 8b, the second lens portion LEN2 corresponding to the second subpixel SP2 may have a hemispherical shape with 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 section LEN2 may have the same diameter S2 in the second direction SD and the same diameter S1 in the first direction FD.

[0094] Although the shape of the second lens portion LEN2 in Figure 8b is hemispherical, this is an example and is not necessarily limited to this shape. Various shapes are possible depending on the shape of the aperture region of the second subpixel SP2.

[0095] For example, the height S3 of the third direction TD may be half the diameter S1 of the first direction FD, but is not necessarily limited to this, and may be greater or less than half the diameter S1 of the first direction FD.

[0096] Figures 9a and 9b are enlarged plan views of one embodiment of SP1 and SP2 in Figure 5 according to the embodiments of this disclosure.

[0097] When describing the first and second subpixels SP1 and SP2 in Figures 9a and 9b, the touch sensor (not shown) will be omitted.

[0098] Referring to Figure 9a, the first subpixel SP1 may include a first aperture region OPN1 within the first subpixel and a first recess 410 surrounding the first aperture region OPN1. Here, the first recess 410 may be formed along the short side (e.g., the first side) of the first aperture region OPN1, or it may not be formed along the long side (e.g., the second side) of the first aperture region OPN1.

[0099] However, the first recess 410 is not necessarily limited to this, and can be formed in various shapes, such as being formed along the long side of the first opening region OPN1, or surrounding both the short side and the long side. In Figure 9a, however, the first recess 410 is shown as an example, formed along the short side of the first opening region OPN1.

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

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

[0102] The emission region of the first subpixel SP1 may be defined by the first aperture region OPN1.

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

[0104] In this disclosure, "substantially identical" can mean being identical to a certain extent, taking into account minute differences due to process errors.

[0105] The first subpixel SP1 may include a first lens portion LEN1 corresponding to the first aperture region OPN1. That is, the first lens portion LEN1 overlaps with the first aperture region OPN1.

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

[0107] The first lens portion LEN1 can cover the first aperture region OPN1 within the first subpixel SP1 and the recess located in the first subpixel SP1.

[0108] Here, the concept that the first lens portion LEN1 covers the recess located in the first subpixel SP1 includes both cases where it covers the entire recess located in the first subpixel SP1 and cases where it covers only a part of it.

[0109] The first lens section LEN1 is intended to improve optical efficiency by changing the optical path of light emitted from the first aperture region OPN1. The first lens section LEN1 is positioned to correspond to the first aperture region OPN1, and its shape can also correspond to the shape of the first aperture region OPN1. In other words, the shape of the first lens section LEN1 can be the same as that of the first aperture region OPN1. However, the shape of the first lens section LEN1 is not necessarily limited to the shape of the first aperture region, and various shapes are possible.

[0110] Referring to Figure 9a, the recess 410 located in the first subpixel SP1 can surround a portion of the first aperture region OPN1 within the first subpixel SP1.

[0111] In a preferred embodiment of Figure 9a, in a plan view defined by a first direction FD and a second direction SD perpendicular to the first direction, a virtual line (e.g., a second virtual line, L2) passing through the center point of the first aperture region OPN1 within the first subpixel SP1 and aligned with the first direction FD is measured by the distance (e.g., a second distance) between two points (e.g., a pair of second points) that are tangent to the boundary of the first aperture region OPN1 within the first subpixel SP1, and the distance (e.g., a second distance) passing through the center point of the first aperture region OPN1 within the first subpixel SP1 and aligned with the first direction FD is measured by the distance (e.g., a second distance) passing through the center point of the first aperture region OPN1 within the first subpixel SP1 and in the second direction S The distance (e.g., first distance) between two points (e.g., a pair of first points) where a virtual line aligned with D (e.g., a first virtual line, L1) touches the boundary of the first aperture region OPN1 within the first subpixel SP1 is even longer, and the first recess 410 located in the first subpixel SP1 can surround the neighborhood of the two points where a virtual line aligned with the second direction SD, passing through the center point of the first aperture region OPN1 within the first subpixel SP1, touches the boundary of the first aperture region OPN1 within the first subpixel SP1.

[0112] In this 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 that is orthogonal to the first direction FD.

[0113] For example, the center point of the first aperture region OPN1 in Figure 9a can be said to be the intersection point of two diagonals connecting opposite vertices of the first aperture region OPN1.

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

[0115] In the preferred embodiment shown in Figure 9a above, when the first recess 410 is arranged, the first recess 410 broadly extracts light in the second direction SD, and the first lens LEN1 reduces the field of view in the first direction FD while improving the brightness field of view in the second direction SD, thereby realizing the wide field of view mode desired by the user.

[0116] Referring to Figure 9b, the second subpixel SP2 may include a second aperture region OPN2 within the second subpixel and a second recess 420 surrounding the second aperture region OPN2.

[0117] The second recess 420 may consist of a flat portion and an inclined portion surrounding the flat portion.

[0118] Furthermore, the second opening region OPN2 may be surrounded by the inclined portion of the second recess 420.

[0119] The emission region of the second subpixel SP2 may be defined by the second aperture region OPN2.

[0120] In other words, the light-emitting region of the second subpixel SP2 may be substantially identical to the second aperture region OPN2.

[0121] The second subpixel SP2 may contain a second lens portion LEN2 corresponding to the second aperture region OPN2. That is, the second lens portion LEN2 can overlap with the second aperture region OPN2.

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

[0123] The second lens section LEN2 is intended to improve optical efficiency by changing the optical path of light emitted from the second aperture region OPN2. The second lens section LEN2 is positioned to correspond to the second aperture region OPN2, and its shape can also correspond to the shape of the second aperture region OPN2. In other words, the shape of the second lens section LEN2 may be identical to the shape of the second aperture region OPN2. However, the shape of the second lens section LEN2 is not necessarily limited to the shape of the second aperture region, and various shapes are possible.

[0124] Referring to Figure 9b, the recess 420 located in the second subpixel SP2 can surround the second aperture region OPN2 within the second subpixel SP2.

[0125] In a preferred embodiment of Figure 9b, in a plan view defined by a first direction FD and a second direction SD perpendicular to the first direction, the distance between two points where a virtual line L3 passing through the center point of the second aperture region OPN2 within the second subpixel SP2 and aligned with the first direction FD is tangent to the boundary of the second aperture region OPN2 within the second subpixel SP2 may be the same as the distance between two points where a virtual line L4 passing through the center point of the second aperture region OPN2 within the second subpixel SP2 and aligned with the second direction SD is tangent to the boundary of the second aperture region OPN2 within the second subpixel SP2.

[0126] In the preferred embodiment shown in Figure 9b above, when the second recess 420 is arranged, the second aperture region OPN2 is surrounded by the inclined portion of the second recess 420, maximizing light extraction. This reduces the field of view in the first direction FD via the second lens portion LEN2, allowing light to be focused forward and realizing the narrow field of view mode desired by the user.

[0127] Figure 9c is a plan view that enlarges another embodiment of SP1 in Figure 5 according to the embodiments of this disclosure.

[0128] The aperture region OPN1 and the first recess 410 within the first subpixel in Figure 9c may be substantially the same as those described in Figure 9a regarding the aperture region OPN1 and the first recess 410 within the first subpixel.

[0129] Referring to Figure 9c, the first lens portion LEN1 can cover the aperture region OPN1 within the first subpixel, and cover a portion of the recess located in the first subpixel without covering the entire first recess 410. Therefore, a portion of the first recess 410 does not need to overlap with the first lens portion LEN1.

[0130] When the first lens section LEN1 is designed as shown in Figure 9c above, the first lens section LEN1 extracts the light emitted through the aperture region OPN1 within the first subpixel, and the light emitted by the first recess 410 is no longer extracted by the first lens section LEN1.

[0131] Therefore, although the brightness efficiency decreases because the light emitted by the first recess 410 is no longer extracted by the first lens LEN1, the second direction SD viewing angle becomes even larger, enabling the realization of an enhanced wide-viewing-angle mode.

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

[0133] Figure 10 may be a diagram showing multiple subpixel regions in a display device according to an embodiment of the present disclosure, or it may be a diagram showing a portion of an inactive region.

[0134] Referring to Figure 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 above the first electrode layer 1310 and above the insulating layer 1210, an emitting layer 1320 located on the first electrode layer 1310, a second electrode layer 1340 located on the 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, an inter-touch insulating layer 1370 located on the touch buffer layer 1360, and a planarization layer 1380 located on the inter-touch 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 device 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 this disclosure are not limited thereto.

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

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

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

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

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

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

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

[0146] The first source electrode layer 1123 and the first drain electrode layer 1124 can contact 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, respectively.

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

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

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

[0150] The insulating layer 1210 may be made of an organic material, but the embodiments of this 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 may be placed over the first transistor, a second insulating layer 1212 may be placed on the first insulating layer 1211, and a third insulating layer 1213 may be placed on the second insulating layer 1212.

[0153] However, this is not necessarily limited to this, and the insulating layer 1210 is not limited to a multilayer film; for example, it may be an insulating layer consisting of a single layer.

[0154] The insulating layer 1210 is arranged in multiple subpixels and may include multiple recesses 400 located in each of the multiple subpixels.

[0155] Figure 10 illustrates an example where the insulating layer 1210 is arranged on a red subpixel R and a green subpixel G, and includes a second recess 420 and a first recess 410 located on the red subpixel and the green subpixel, respectively.

[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 consist of a flat portion FLT and an inclined portion SLO that surrounds the flat portion FLT and extends from the flat portion FLT.

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

[0159] However, this is not necessarily the only option, and a single insulating layer 1210 can include both the flat portion FLT and the inclined portion SLO of the recess 400.

[0160] The flat portion FLT of the recess 400 may be a portion whose surface is parallel to the surface of the substrate 1100, and the inclined portion SLO may surround the flat portion FLT, with the surface of the inclined portion SLO having a predetermined angle from the surface of the substrate 1100.

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

[0162] The first recess 410 may consist of a first flat portion FLT1 and a first inclined portion SLO1 surrounding the first flat portion FLT1.

[0163] Furthermore, the second recess 420 may consist of a second flat portion FLT2 and a second inclined portion SLO2 surrounding the second flat portion FLT2.

[0164] Furthermore, the insulating layer 1210 may have contact holes spaced apart from the recess 400.

[0165] Then, within at least one subpixel region, the first electrode layer 1310 is positioned on the periphery of the insulating layer 1210 and on the recess 400.

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

[0167] A bank layer 1330 may be located on the insulating layer 1210 and include an aperture region OPN within at least one subpixel.

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

[0169] The aperture region (OPN) can correspond to a portion of the flat section (FLT).

[0170] The statement that the aperture region (OPN) corresponds to a part of the flat region (FLT) means that the aperture region (OPN) overlaps with a part of the flat region (FLT) in a subpixel.

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

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

[0173] Among multiple subpixels, the first aperture region OPN1 within the first subpixel may be wider than the second aperture region OPN2 within the second subpixel.

[0174] A light-emitting layer 1320 of an organic light-emitting device may be placed on the first electrode layer 1310 that does not overlap with the bank layer 1330.

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

[0176] A second electrode layer 1340 of the organic light-emitting element can be placed 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 linear deposition or coating method.

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

[0179] The light-emitting layer 1320 formed in this manner may have a thickness in a region that is at a predetermined angle to the substrate 1100 that is thinner than the thickness in a region that is parallel to the substrate 1100.

[0180] Therefore, when the organic light-emitting element is driven, the current density is highest in the region where the light-emitting layer 1320 is formed to be relatively thin, that is, in 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 emission characteristics of the organic light-emitting element in the region corresponding to the inclined portion SLO of the recess 400 and the light emission characteristics of the organic light-emitting element in the region corresponding to the flat portion FLT of the recess 400 may differ, and degradation of the element may occur.

[0182] Furthermore, the light-emitting layer 1320 may include a red organic light-emitting layer 1320R located on the red subpixel R, a green organic light-emitting layer 1320G located on the green subpixel G, and a blue organic light-emitting layer 1320B located on the blue subpixel B.

[0183] Figure 10 shows a case where a red organic light-emitting layer 1320R is located in the second subpixel and a green organic light-emitting layer 1320G is located in the first subpixel, but the configuration is not necessarily limited to this.

[0184] In the embodiment of this disclosure, the bank layer 1330 is arranged to cover the inclined portion SLO of the recess 400, thereby preventing degradation of the element in the region corresponding to the inclined portion SLO of the recess 400 and preventing the phenomenon of different light emission characteristics in each region.

[0185] However, the thickness conditions of the light-emitting layer 1320 in the embodiments of this disclosure are not limited thereto, and the thickness of the light-emitting layer 1320 may have corresponding thicknesses at each position.

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

[0187] Figure 10 shows a configuration in which the first electrode layer 1310 is a single layer, but the embodiments of this disclosure are not limited to this and may consist of multiple layers.

[0188] For example, if the first electrode layer 1310 consists of multiple layers, at least one layer may contain a reflective metal.

[0189] For example, the first electrode layer 1310 may include at least one of aluminum, neodymium, nickel, titanium, tantalum, copper (Cu), silver (Ag), and aluminum alloys, but the embodiments of this disclosure are not limited thereto.

[0190] The second electrode layer 1340 may contain a conductive material that transmits or semi-transmits light.

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

[0192] In this case, if the second electrode layer 1340 contains a semipermeable 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, 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 on the substrate 1100.

[0194] The first metal pattern 1127 can function as a capacitor or block light coming from the back.

[0195] The second metal pattern 1128 can come into contact with 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] Furthermore, as shown in Figure 10, a storage capacitor Cst can be placed in the active region A / A.

[0199] The storage capacitor Cst may 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, but the structure of the storage capacitor Cst in the embodiments of this disclosure is not limited thereto.

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

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

[0202] A second gate insulating layer 1115 may be placed on the second active layer 1131, and a second gate electrode layer 1131 may be placed on the second gate insulating layer 1115.

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

[0204] A second source electrode layer 1132 and a second drain electrode layer 1133 may be arranged on the second interlayer insulating layer 1116.

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

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

[0207] At least one sealing layer 1350 may be placed on the second electrode layer 1340 of the organic light-emitting element. As shown in Figure 10, the sealing layer 1350 may be located between the bank layer 1330 and the lens portion LEN.

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

[0209] Thus, when the sealing layer 1350 consists of multiple layers, at least one layer may contain an inorganic insulating material, and at least one other layer may contain an organic insulating material.

[0210] In the embodiments of this disclosure, the first sealing layer 1351 and the third sealing layer 1353 may contain an inorganic insulating material, and the second sealing layer 1352 may contain an organic insulating material, but the embodiments of this disclosure are not limited thereto.

[0211] Such a sealing layer 1350 is placed on an organic light-emitting element and can prevent moisture or foreign matter from penetrating the organic light-emitting element.

[0212] Multiple black matrices 220 may be arranged in the third sealing layer 1353.

[0213] The black matrix 220 may be formed from a material with low reflectivity.

[0214] For example, Black Matrix 220 may contain carbon black, dyes, or resins.

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

[0216] Multiple touch sensors 210 may be arranged on the inter-touch insulating layer 1370.

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

[0218] A planarization layer 1380 may be placed on multiple touch sensors 210.

[0219] In the embodiment of the present disclosure, the planarization layer 1380 includes a lens portion LEN, which allows for the extraction of light confined to the substrate 1100 by total internal reflection and other means, thereby providing a display device with excellent brightness.

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

[0221] Thus, by having a refractive index of the planarization layer 1380 that is smaller than the refractive index of the multiple lens sections LEN, the path of light can be adjusted to a desired direction.

[0222] The lens portion LEN may include a first lens portion LEN1 corresponding to a first recess 410 located in a first subpixel and a second lens portion LEN2 corresponding to a second recess 420 located in a second subpixel.

[0223] Here, the statement that the lens portion LEN corresponds to the recess 400 means, for example, that in one subpixel, the lens portion LEN is positioned such that it overlaps with all or part of the recess 400.

[0224] By positioning the lens portion LEN in a region corresponding to the recess 400, for example, the light emitted from the light-emitting layer 1320 and released to the outside of the display device, and the light emitted from the light-emitting layer 1320 and reflected by the reflective metal contained in the first electrode layer 1310 located in the inclined portion SLO of the recess 400 and released to the outside of the display device, can be effectively dispersed. In other words, each lens portion LEN can overlap the corresponding recess 400.

[0225] The light dispersed by the lens (LEN) can be extracted to the outside of the display device without undergoing total internal reflection at the interface between the display device and the outside air, thus improving the brightness of the display device.

[0226] A color filter CF may be included, located between the touch buffer layer 1360 and the layer on which the multiple touch sensors 210 are arranged. As shown in Figure 10, the touch sensors 210 may be on the same layer as the lens unit LEN, and the color filter CF may be on the same layer as the black matrix 220. Therefore, the touch sensors 210 and the lens unit LEN may be on different layers from the color filter CF and the black matrix 220.

[0227] In Figure 10, a green color filter CF1 and a red color filter CF2 are placed between the touch buffer layer 1360 and the layer on which the multiple touch sensors 210 are arranged.

[0228] By including a color filter CF located between the touch buffer layer 1360 and the layer on which the multiple touch sensors 210 are arranged, a display device with high brightness efficiency can be provided.

[0229] The layer in which the color filter CF and black matrix 220 are located may include multiple connection patterns 1400.

[0230] Figure 10 illustrates an example where one of the multiple connection patterns 1400 is placed 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 electrically connects to at least one of the multiple touch sensors 210.

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

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

[0234] Specifically, the display device according to the embodiment of this disclosure may include a first dam 1510 located on the outer edge of the sealing layer 1350 and a second dam 1520 located on the outer edge of the planarization layer 1380. As shown in Figure 10, the edge of the planarization layer 1380 is in contact with the second dam 1520. Furthermore, the first dam 1510 may be closer to the substrate 1100 than the second dam 1520 and may be located between the second dam 1520 and the bank layer 1330 in a cross-sectional view of the display device.

[0235] In this disclosure, the first dam 1510 and the second dam 1520 refer to the lower dam and the upper dam, respectively.

[0236] Figure 10 shows a configuration in which dam 1500 includes a first dam 1510 and a second dam 1520, but the embodiments of this disclosure are not limited thereto, and the number of dams 1500 can be appropriately changed depending on the size of the display device.

[0237] Furthermore, although Figure 10 shows a configuration in which the first dam 1510 has two bulkheads and the second dam 1520 has one bulkhead, the embodiments of this disclosure are not limited to this, and a dam may be composed of several bulkheads.

[0238] Here, the planarization layer 1380, which is positioned to flatten the lens portion LEN, is formed by inkjet printing. By positioning the second dam 1520, it is possible to prevent ink from leaking onto the outer casing of the first dam 1510 during inkjet printing.

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

[0240] The touch sensor 210 is electrically connected via the connection pattern 1400, and can form either a single drive touch electrode line or a single sensing touch electrode line.

[0241] Figure 10 shows a configuration in which the touch sensor 210 and the touch line 300 are located on the same layer, but the configuration is not limited to this, and the touch sensor 210 and the touch line 300 can also be located on different layers.

[0242] Touchline 300 is located on the first dam 1510 and extends to the pad section 500 located on the outer perimeter of the first dam 1510.

[0243] Such a touchline 300 is electrically connected to the pad section 500.

[0244] Specifically, the touchline 300 can be electrically connected to the pad portion 500 located in the inactive area N / A.

[0245] The pad section 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) supplies a touch drive signal to at least one of the multiple touch sensors 200 and can sense at least one of the presence or absence of a touch and the touch location in response to the touch drive signal.

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

[0248] A passivation layer 1390 may be placed on top of the flattening layer 1380 and the second dam 1520.

[0249] The passivation layer 1390 prevents moisture or foreign matter from penetrating, and can prevent materials such as metals from corroding due to reaction with moisture in the air.

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

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

[0252] Referring to Figure 11, in Figure 9a, if the recess 410 located in the first subpixel surrounds the vicinity of two points where a virtual straight line passing through the center point of the aperture region OPN1 within the first subpixel and aligned with the second direction SD touches the boundary of the aperture region OPN1 within the first subpixel, the recess 410 broadly extracts light in the second direction SD and improves the brightness viewing angle in the second direction SD, thereby realizing the wide viewing angle mode desired by the user.

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

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

[0255] Referring to Figure 12, in Figure 9a, if the recess located in the first subpixel does not enclose the vicinity of the two points that are tangent to the boundary of the aperture region OPN1 within the first subpixel, then the field of view of the first direction FD is reduced by the first lens unit LEN1, thereby realizing the wide field of view mode desired by the user.

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

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

[0258] Referring to Figure 13, as shown in Figure 9c, the first lens portion LEN1 can cover the aperture region OPN1 within the first subpixel and cover only a portion of the recess 410 located in the first subpixel.

[0259] When the first lens section LEN1 is designed as shown in Figure 9c above, the first lens section LEN1 extracts the light emitted through the aperture region OPN1 within the first subpixel, and the light emitted by the first recess 410 is no longer extracted by the first lens section LEN1.

[0260] Therefore, since the light emitted by the first recess 410 is no longer extracted by the first lens LEN1, the brightness efficiency decreases, but the second direction SD viewing angle becomes even larger, enabling the realization of an enhanced wide-viewing-angle mode.

[0261] A brief description of the embodiments of this disclosure described above is as follows.

[0262] The display device according to the embodiment of the present disclosure includes an insulating layer located on a substrate and including a plurality of recesses located in each of a plurality of subpixels, wherein the area of ​​the first recess located in the first subpixel among the plurality of subpixels is greater than the area of ​​the second recess located in the second subpixel among the plurality of subpixels, and a plurality of lens portions located on the insulating layer and including a first lens portion corresponding to the first recess and a second lens portion corresponding to the second recess.

[0263] A display device according to an embodiment of the present disclosure may further include a sealing layer located on a plurality of subpixels and positioned beneath a plurality of lens portions, and a planarizing layer located above the plurality of lens portions and covering at least a portion of the side surface of the sealing layer.

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

[0265] A display device according to an embodiment of the present disclosure may further include at least one upper dam located on the outer edge of the flattening layer.

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

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

[0268] A display device according to an embodiment of the present disclosure may further include a color filter located between the sealing layer and the layer on which a plurality of touch sensors are arranged.

[0269] A display device according to an embodiment of the present disclosure may further include a plurality of black matrices located on the sealing layer in the layer on which the color filter is disposed, and disposed in at least a portion of the region other than the region on which the color filter is disposed.

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

[0271] The display device according to the embodiment of the present disclosure may include an insulating layer located on a substrate and arranged in a plurality of subpixels, including a plurality of recesses within the subpixels consisting of a flat portion and an inclined portion surrounding the flat portion; a bank layer located on the insulating layer and including an aperture region within the subpixel, the aperture region of which is surrounded by the inclined portion, the aperture region of which is in a first subpixel of the plurality of subpixels being wider than the aperture region of which is in a second subpixel of the plurality of subpixels, the recess located in the first subpixel surrounding a portion of the aperture region of the first subpixel, the recess located in the second subpixel surrounding the aperture region of the second subpixel, and a plurality of lens portions located on the insulating layer, including a first lens portion corresponding to the recess located in the first subpixel and a second lens portion corresponding to the recess located in the second subpixel.

[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, the distance between two points where a virtual line aligned with the second direction passing through the center point of the aperture region in the first subpixel touches the boundary of the aperture region in the first subpixel is longer than the distance between two points where a virtual line aligned with the first direction passing through the center point of the aperture region in the first subpixel touches the boundary of the aperture region in the first subpixel, and the recess placed in the first subpixel can surround the neighborhood of the two points where the virtual line aligned with the second direction passing through the center point of the aperture region in the first subpixel touches the boundary of the aperture region in the first subpixel.

[0273] In the display device according to the 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 line passing through the center point of the aperture region in the second subpixel and aligned with the first direction is tangent to the boundary of the aperture region in the second subpixel may be the same as the distance between two points where a virtual line passing through the center point of the aperture region in the second subpixel and aligned with the second direction is tangent to the boundary of the aperture region in the second subpixel.

[0274] A display device according to an embodiment of the present disclosure may further include a plurality of touch sensors located on an insulating layer and positioned in at least a portion of the region other than the region in which the plurality of lens portions are arranged.

[0275] In the display device according to the embodiments of the present disclosure, a plurality of black matrices may be further included, located on the insulating layer and positioned in at least a portion of the region other than the region in which the plurality of lens portions are arranged.

[0276] A 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 a plurality of touch sensors.

[0277] In the display device according to the embodiment of the present disclosure, the first lens portion can cover the aperture region within the first subpixel and the recess located within the first subpixel.

[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 concave portion disposed in the first sub-pixel.

[0279] The above description merely exemplarily explains the technical idea of the present disclosure. For those having ordinary knowledge in the technical field to which the present disclosure pertains, various modifications and variations are possible without departing from the essential characteristics of the present disclosure. In addition, the embodiments disclosed in the present disclosure are for the purpose of explanation 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: Concave portion 410: First concave portion 420: Second concave portion 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 portion FLT2: Second flat portion SLO1: First inclined portion SLO2: Second inclined portion

Claims

1. A substrate containing multiple subpixels, An insulating layer on the substrate, comprising a plurality of recesses extending through the insulating layer, wherein the plurality of recesses comprises a first recess in a first subpixel and a second recess in a second subpixel among the plurality of subpixels, A bank layer on the insulating layer, comprising a plurality of opening regions, wherein the plurality of opening regions include 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, each including a first lens portion overlapping the first recess and the first aperture region, and a second lens portion overlapping the second recess and the second aperture region. Equipped with, In order to enable switching between wide-viewing-angle mode and narrow-viewing-angle mode, in a common color, the area of ​​the first recess of the first subpixel is larger than the area of ​​the second recess of the second subpixel. In a plan view of a display device defined by a first direction and a second direction perpendicular to the first direction, the first distance between a first pair of points where a first virtual line passing through the center point of the first aperture region in the first subpixel and parallel to the second direction intersects the boundary of the first aperture region in the first subpixel is greater than the second distance between a second pair of points where a second virtual line passing through the center point of the first aperture region in the first subpixel and parallel to the first direction intersects the boundary of the first aperture region in the first subpixel. A display device wherein the first recess of the first subpixel surrounds a first pair of points where a first virtual line parallel to the second direction, passing through the center point of the first aperture region within the first subpixel, intersects the boundary of the first aperture region within the first subpixel.

2. The sealing layer between the bank layer and the plurality of lens portions, and A planarization layer on the plurality of lens portions, which covers at least a portion of the side surface of the sealing layer. The display device according to 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 device according to claim 2, further comprising at least one upper dam in contact with the end of the flattened layer.

5. The display device according to claim 4, further comprising at least one lower dam which is closer to the substrate than the at least one upper dam, wherein the at least one lower dam is located 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 located 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 the same 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 located in the same layer as the color filter and not overlapping with the plurality of lens portions.

9. The display device according to claim 8, further comprising a plurality of connection patterns located in the same layer as the color filter 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 extending through the insulating layer and including a plurality of recesses within a plurality of subpixels, each of the plurality of recesses including a flat portion and an inclined portion extending from the flat portion and surrounding the flat portion, A bank layer on the insulating layer, each comprising a plurality of aperture regions located within a corresponding subpixel among the plurality of subpixels, wherein the plurality of aperture regions comprises a first aperture region surrounded by a first recess among the plurality of recesses and located within the first subpixel among the plurality of subpixels, and a second aperture region surrounded by a second recess among the plurality of recesses and located within the second subpixel among the plurality of subpixels, and A plurality of lens portions on the bank layer and the insulating layer, each comprising a first lens portion overlapping the first aperture region and the first recess, and a second lens portion overlapping the second aperture region and the second recess. Equipped with, In order to enable switching between wide-angle mode and narrow-angle mode, in a common color, the first aperture region of the first subpixel is wider than the second aperture region of the second subpixel. In a plan view of a display device defined by a first direction and a second direction perpendicular to the first direction, the first distance between a first pair of points where a first virtual line passing through the center point of the first aperture region in the first subpixel and parallel to the second direction intersects the boundary of the first aperture region in the first subpixel is greater than the second distance between a second pair of points where a second virtual line passing through the center point of the first aperture region in the first subpixel and parallel to the first direction intersects the boundary of the first aperture region in the first subpixel. A display device wherein the first recess of the first subpixel surrounds a first pair of points where a first virtual line parallel to the second direction, passing through the center point of the first aperture region within the first subpixel, intersects the boundary of the first aperture region within the first subpixel.

11. The display device according to claim 1 or 10, wherein in a plan view of the display device defined by a first direction and a second direction perpendicular to the first direction, the first distance between a first pair of points where a first virtual line parallel to the first direction passing through the center point of the second aperture region in the second subpixel intersects the boundary of the second aperture region in the second subpixel is the same as the second distance between a second pair of points where a second virtual line parallel to the second direction passing through the center point of the second aperture region in the second subpixel intersects the boundary of the second aperture region in the second subpixel.

12. 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.

13. The display device according to claim 12, further comprising a plurality of black matrices that overlap with the plurality of touch sensors.

14. The display device according to claim 13, further comprising a plurality of connection patterns electrically connected to at least one of the plurality of touch sensors.

15. The display device according to claim 1 or 10, wherein the width of the first lens portion is greater than the width of the first aperture region within the first subpixel and greater than the width of the first recess within the first subpixel.

16. The display device according to claim 1 or 10, wherein the width of the first lens portion is smaller than the width of the first aperture region within the first subpixel and smaller than the width of the first recess within the first subpixel.

17. substrate, A plurality of transistors on the substrate, including a first transistor and a second transistor, A first insulating layer on the plurality of transistors, the first insulating layer including a first recess and a second recess extending through the first insulating layer, A first light-emitting element located in the first recess, the first light-emitting element being connected to the first transistor, and comprising 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 the second electrode layer on the first light-emitting layer in the first recess, A second light-emitting element located within the second recess, the second light-emitting element being connected to the second transistor, and comprising a first electrode layer within the second recess, a second light-emitting layer on the first electrode layer within the second recess, and a second portion of the second electrode layer on the second light-emitting layer within the second recess, A bank layer on the first insulating layer, comprising a first opening region extending to the first recess and a second opening region extending to the second recess, and A plurality of lens portions on the first insulating layer, each comprising a first lens portion overlapping the first recess and the first aperture region, and a second lens portion overlapping the second recess and the second aperture region. Equipped with, In order to enable switching between wide-angle mode and narrow-angle mode, the area of ​​the first recess is larger than the area of ​​the second recess for a common color. In a plan view of a display device defined by a first direction and a second direction perpendicular to the first direction, the first distance between a first pair of points where a first virtual line passing through the center point of the first opening region and parallel to the second direction intersects the boundary of the first opening region is greater than the second distance between a second pair of points where a second virtual line passing through the center point of the first opening region and parallel to the first direction intersects the boundary of the first opening region. A display device in which the first recess surrounds a first pair of points where a first virtual line, passing through the center point of the first opening region and parallel to the second direction, intersects the boundary of the first opening region.

18. The invention further includes a second insulating layer located between the first insulating layer and the plurality of transistors, The display device according to claim 17, 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.

19. The display device according to claim 17, wherein in a plan view of the display device defined by a first direction and a second direction perpendicular to the first direction, the first distance between a first pair of points where a first virtual line passing through the center point of the second opening region and parallel to the first direction intersects the boundary of the second opening region is the same as the second distance between a second pair of points where a second virtual line passing through the center point of the second opening region and parallel to the second direction intersects the boundary of the second opening region.

20. The display device according to claim 17, wherein the width of the first opening region is smaller than the width of the second opening region.

21. The display device according to claim 17, further comprising a color filter between the first lens portion and the first light-emitting element.

22. Multiple touch sensors on the same layer as the multiple lens portions, and The color filter further includes multiple black matrices on the same layer as the aforementioned color filter, The display device according to claim 21, wherein the plurality of black matrices overlap with the plurality of touch sensors and do not overlap with the plurality of lens portions.

23. The display device according to claim 17, wherein the end of the first light-emitting layer is located between the bank layer and the first electrode layer.

24. The display device according to claim 17, wherein the width of the first lens portion is greater than the width of the first aperture region and greater than the width of the first recess.

25. The display device according to claim 17, wherein the width of the first lens portion is smaller than the width of the first aperture region and smaller than the width of the first recess.

26. The display device according to claim 1, 10, or 17, wherein the first lens portion covers the first aperture region and covers a part of the first recess but does not cover the entire first recess.

27. ​​The display device according to claim 1, 10, or 17, wherein the first lens portion comprises only one lens for each pair of the first recess and the first aperture region, and the first lens portion is a convex lens with an elongated shape along the second direction.

Images