Display device

Abstract

There is provided a display device including a substrate in which a plurality of pixels are disposed, each pixel including a plurality of sub-pixels representing different colors; a first light emitting diode and a second light emitting diode disposed in each of the plurality of sub-pixels; a touch sensor unit disposed over the first light emitting diode and the second light emitting diode; a plurality of first lenses disposed to overlap a light emitting region of the first light emitting diodes on the touch sensor unit and having a viewing angle of a first value; and a plurality of second lenses disposed to overlap a light emitting region of the second light emitting diodes on the touch sensor unit and having a viewing angle of a second value higher than the first value. In the touch sensor unit, a plurality of first openings may be disposed to overlap a light emitting area of the first light emitting diode, and a plurality of first lenses may be disposed to correspond to the plurality of first openings.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a display device with controllable viewing angle. Background Art

[0002] With the development of technology in modern society, display devices are used to provide information to users in various ways. Display devices include not only electronic signs that simply transmit visual information in one direction, but also various electronic devices that require more advanced technology to check the user's input and provide information in response to the checked input.

[0003] For example, a display device is included in a vehicle to provide various information to the driver and passengers of the vehicle. However, the display device of the vehicle needs to appropriately display the content without interrupting the operation of the vehicle. For example, when the vehicle is running, the display device needs to limit the display of the content, which may reduce the driving concentration. Summary of the invention

[0004] An object to be achieved by the present disclosure is to provide a display device in which a viewing angle can be selectively controlled.

[0005] Another object to be achieved by the present disclosure is to provide a display device which reduces or minimizes a process error of a process of placing a plurality of lenses to control a viewing angle.

[0006] Another object to be achieved by the present disclosure is to provide a display device with improved light emitting efficiency.

[0007] Another object to be achieved by the present disclosure is to provide a display device with improved vertical brightness.

[0008] Another object to be achieved by the present disclosure is to provide a display device with improved lifespan.

[0009] The objects of the present disclosure are not limited to the above objects, and other objects not mentioned above can be clearly understood by those skilled in the art from the following description.

[0010] According to aspects of the present disclosure, a display device includes a substrate in which a plurality of pixels are arranged, each pixel including a plurality of sub-pixels representing different colors; a first light-emitting diode and a second light-emitting diode arranged in each of the plurality of sub-pixels; a touch sensor unit arranged above the first light-emitting diode and the second light-emitting diode; a plurality of first lenses on the touch sensor unit, the plurality of first lenses being arranged to overlap with a light-emitting area of ​​the first light-emitting diode and having a viewing angle of a first value; and a plurality of second lenses on the touch sensor unit, the plurality of second lenses being arranged to overlap with a light-emitting area of ​​the second light-emitting diode and having a viewing angle of a second value higher than the first value. In the touch sensor unit, a plurality of first openings may be arranged to overlap with a light-emitting area of ​​the first light-emitting diode, and the plurality of first lenses may be arranged to correspond to the plurality of first openings.

[0011] According to another aspect of the present disclosure, a display device includes a substrate in which a plurality of pixels are arranged, each pixel including a plurality of sub-pixels; a first light-emitting diode and a second light-emitting diode arranged in each of the plurality of sub-pixels; a touch sensor unit arranged above the first light-emitting diode and the second light-emitting diode; a plurality of first lenses on the touch sensor unit, the plurality of first lenses being arranged to overlap with a light-emitting area of ​​the first light-emitting diode and having a viewing angle of a first value; and a plurality of second lenses on the touch sensor unit, the plurality of second lenses being arranged to overlap with a light-emitting area of ​​the second light-emitting diode and having a viewing angle of a second value higher than the first value. In the touch sensor unit, a plurality of first openings overlapping with the light-emitting area of ​​the first light-emitting diode and a second opening overlapping with the light-emitting area of ​​the second light-emitting diode may be arranged, the plurality of first lenses may be arranged to correspond to the plurality of first openings, and the second lenses may be arranged to correspond to the second openings.

[0012] Additional details of example implementations are included in the detailed description and the accompanying drawings.

[0013] In the display device according to the present disclosure, the viewing angle may be selectively controlled.

[0014] In the display device according to the present disclosure, the degree of freedom in designing a plurality of lenses can be improved by reducing or minimizing process errors.

[0015] In the display device according to the present disclosure, the sizes of a plurality of lenses are reduced to be provided, so that light emitting efficiency can be improved.

[0016] The display device according to the present disclosure is configured to emit light emitted from a light emitting diode toward a front direction of the display device to improve vertical brightness.

[0017] In the display device according to the present disclosure, the brightness is improved, so that the life span can also be improved.

[0018] The effects according to the present disclosure are not limited to the contents of the above examples, and more various effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other aspects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is an exemplary view of a display device according to an exemplary embodiment of the present disclosure;

[0021] Figure 2 is a functional block diagram of a display device according to an exemplary embodiment of the present disclosure;

[0022] Figure 3 is a circuit diagram illustrating an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure;

[0023] Figure 4 is an enlarged plan view illustrating a layout of a lens included in one pixel of a display device according to an exemplary embodiment of the present disclosure;

[0024] Figure 5 is along Figure 4 A cross-sectional view taken along line AA';

[0025] Figure 6 is along Figure 4 A cross-sectional view taken along line BB';

[0026] FIG. 7A to FIG. 7G is a process diagram for explaining a manufacturing process of a display device according to an exemplary embodiment of the present disclosure;

[0027] Figure 8 is an enlarged plan view of a display device according to another exemplary embodiment of the present disclosure;

[0028] Fig. 9 is a cross-sectional view of a display device according to still another exemplary embodiment of the present disclosure; and

[0029] Fig.10 is a cross-sectional view of a display device according to still another exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] By referring to the exemplary embodiments described in detail below in conjunction with the accompanying drawings, the advantages and features of the present disclosure and the methods for achieving these advantages and features will become clear. However, the present disclosure is not limited to the exemplary embodiments disclosed herein, but will be implemented in various forms. Exemplary embodiments are provided only by way of example so that those skilled in the art can fully understand the disclosure of the present disclosure and the scope of the present disclosure.

[0031] The shapes, sizes, ratios, angles, numbers, etc. shown in the accompanying drawings for describing the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, the same reference numerals generally represent the same elements. In addition, in the following description of the present disclosure, the detailed description of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. The terms used herein, such as "including", "having", "consisting of..." are generally intended to allow the addition of other components unless the term is used together with the term "only". Unless otherwise expressly stated, any reference to the singular may include the plural.

[0032] Components are interpreted as including ordinary margins of error even if not explicitly stated.

[0033] When terms such as “on,” “above,” “below,” and “next” are used to describe the positional relationship between two components, one or more components may be positioned between the two components unless these terms are used together with the terms “immediately next to” or “directly.”

[0034] When an element or layer is referred to as being “on” another element or layer, the other layer or element may be directly on or between the other element.

[0035] Although the terms "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Therefore, in the technical concept of the present disclosure, the first component mentioned below may be the second component.

[0036] Like reference numbers generally refer to like elements throughout the specification.

[0037] The size and thickness of each component shown in the drawings are shown for convenience of description, and the present disclosure is not limited to the size and thickness of the components shown.

[0038] The features of the various embodiments of the present disclosure may be partially or entirely adhered to or combined with each other, and may be interlocked and operated in technically various ways, and the embodiments may be performed independently or in association with each other.

[0039] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0040] Figure 1 is an exemplary view of a display device according to an exemplary embodiment of the present disclosure.

[0041] The display device 100 may be disposed in at least a portion of a dashboard of a vehicle. The dashboard of the vehicle includes structures disposed in front surfaces of front seats (e.g., a driver's seat and a front passenger seat) of the vehicle. For example, input structures for manipulating various functions in the vehicle (e.g., air conditioning, an audio system, or a navigation system) may be disposed on the dashboard of the vehicle.

[0042] In an exemplary embodiment, the display device 100 is provided on a dashboard of a vehicle to operate as an input unit for manipulating at least a portion of various functions of the vehicle. The display device 100 can provide various information related to the vehicle, such as operation information of the vehicle (e.g., current speed, remaining fuel amount, or mileage of the vehicle) or information about components of the vehicle (e.g., degree of damage of tires of the vehicle).

[0043] In an exemplary embodiment, the display device 100 may be arranged across a driver seat and a front passenger seat arranged in the front seats of a vehicle. Users of the display device 100 may include a driver of the vehicle and a passenger sitting in the front passenger seat. Both the vehicle driver and the passenger use the display device 100.

[0044] In an exemplary embodiment, Figure 1 Only a portion of the display device 100 is illustrated. Figure 1 The display device 100 shown may illustrate a display panel in various configurations included in the display device 100. Specifically, for example, Figure 1 The illustrated display device 100 may illustrate an active area of ​​a display panel and at least a portion of an inactive area. Figure 1 Configurations other than the illustrated components may be installed in the interior of the vehicle (or installed on at least a portion of the interior of the vehicle).

[0045] Figure 2 is a functional block diagram of a display device according to an exemplary embodiment of the present disclosure.

[0046] The electroluminescent display device may be applied to the display device according to the exemplary embodiment of the present disclosure. The electroluminescent display device may use an organic light emitting diode (OLED) display device, a quantum dot light emitting diode display device, or an inorganic light emitting diode display device.

[0047] Reference Figure 2 , the display device 100 includes a display panel PN, a data driving circuit DD, a gate driving circuit GD and a timing controller T-con.

[0048] In an exemplary embodiment, the display panel PN may generate an image to be provided to a user. For example, the display panel PN may generate and display an image to be provided to a user through a plurality of pixels PX in which pixel circuits are disposed.

[0049] The data driving circuit DD, the gate driving circuit GD, and the timing controller T-con may provide signals for the operation of the pixel PX through the signal lines. For example, the signal lines may include data lines DL and gate lines GL.

[0050] In some cases, the display device may further include a power supply unit. In this case, a signal for operation of the pixel PX may be supplied through a power line connecting the power supply unit and the display panel PN. According to an exemplary embodiment, the power supply unit may supply power to the data drive circuit DD and the gate drive circuit GD. The data drive circuit DD and the gate drive circuit GD may be driven based on the power supplied from the power supply unit.

[0051] For example, the data driving circuit DD may apply a data signal to each pixel PX through the data line DL. The gate driving circuit GD may apply a gate signal to each pixel PX through the gate line GL. The power supply unit may supply a power voltage to each pixel PX through a power voltage supply line.

[0052] The timing controller T-con may control the data driving circuit DD and the gate driving circuit GD. For example, the timing controller T-con rearranges digital video data input from the outside according to the resolution of the display panel PN to provide the digital video data to the data driving circuit DD.

[0053] The data driving circuit DD converts the digital video data input from the timing controller T-con into an analog data voltage based on the data control signal to supply the converted analog data voltage to the plurality of data lines.

[0054] The gate drive circuit GD can generate a scan signal and a light-emitting signal (or a light-emitting control signal) based on the gate control signal. The gate drive circuit GD may include a scan driver and a light-emitting signal driver. The scan driver generates a scan signal in a row sequential manner to drive at least one scan line connected to each pixel row, thereby providing the scan signal to the scan line. The light-emitting signal driver generates a light-emitting signal in a row sequential manner to drive at least one light-emitting signal line connected to each pixel row, thereby providing the light-emitting signal to the light-emitting signal line.

[0055] According to an exemplary embodiment, the gate driving circuit GD may be provided in the display panel PN in a gate in panel (GIP) manner. For example, the gate driving circuit GD is divided into a plurality of circuits to be provided on at least two side surfaces of the display panel PN.

[0056] The display panel PN may include an active area and a non-active area.

[0057] The active area may include a plurality of pixels PX. In the pixels PX, a plurality of data lines (eg, Figure 2 data lines DL) and a plurality of gate lines (eg, Figure 2 The gate line GL of the pixel PX intersects, and the sub-pixels can be arranged in each intersection area. Each sub-pixel included in a pixel PX can emit light of different colors. For example, the pixel PX uses three sub-pixels to realize blue, red and green. However, this is not limited to this, and in some cases, the pixel PX may also include a sub-pixel for further realizing a specific color (e.g., white).

[0058] In the pixel PX, a region that realizes blue may be referred to as a blue sub-pixel, a region that realizes red may be referred to as a red sub-pixel, and a region that realizes green may be referred to as a green sub-pixel.

[0059] In an exemplary embodiment, a pixel PX may include a plurality of sub-pixels. Each of the plurality of sub-pixels may be divided into a first lens region and a second lens region that provide different viewing angles. For example, one pixel PX may include a first lens region that provides light within a first range to form a first viewing angle and a second lens region that provides light within a second range to form a second viewing angle. The first range may be wider than the second range.

[0060] The inactive area may be arranged around the active area. Various components for driving the pixel circuit arranged in the pixel PX may be arranged in the inactive area. For example, at least a portion of the gate drive circuit GD may be arranged in the inactive area. The inactive area may be referred to as a border area.

[0061] Figure 3 is a circuit diagram illustrating an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure. A pixel PX may include a plurality of sub-pixels representing different colors and a pixel circuit PC corresponding to the plurality of sub-pixels. Figure 3 An example of the pixel circuit PC for one sub-pixel provided in the pixel PX is illustrated.

[0062] Reference Figure 3 , the pixel circuit PC may include nine transistors and one capacitor.

[0063] The pixel circuit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a 4-1st transistor T41, a 4-2nd transistor T42, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, a driving transistor DT, and a capacitor Cst.

[0064] At least some of the nine transistors included in the pixel circuit PC may be n-type transistors or p-type transistors. In the case of p-type transistors, the low level voltage of each drive signal may refer to the voltage that turns on the TFT, and the high level voltage of each drive signal may refer to the voltage that turns off the TFT.

[0065] Here, the low level voltage may correspond to a predetermined voltage lower than the high level. For example, the low level voltage may include a voltage corresponding to a range of -8V to -12V. The high level voltage may correspond to a predetermined voltage higher than the low level voltage. For example, the high level voltage may include a voltage corresponding to a range of 12V to 16V. According to an exemplary embodiment, the low level voltage may be referred to as a first voltage, and the high level voltage may be referred to as a second voltage. In this case, the first voltage may be lower than the second voltage. However, the range of the low level voltage and the high level voltage is illustrative, but not limited thereto.

[0066] Here, the first electrode or the second electrode of the transistor to be described below may refer to the source electrode or the drain electrode. However, the wording of the first electrode and the second electrode is only used to distinguish the electrodes, and does not limit the wording corresponding to the respective electrodes. In addition, in the respective electrodes, the first electrode may not refer to the same electrode. For example, the first electrode of the first transistor T1 may refer to the source electrode of the first transistor T1, and the first electrode of the sixth transistor T6 may refer to the drain electrode of the sixth transistor T6.

[0067] In an exemplary embodiment, the driving transistor DT may be connected to a first transistor T1 connected to the first light emitting diode 140 and a second transistor T2 connected to the second light emitting diode 150. For example, a second electrode of the driving transistor DT may be connected to the first transistor T1 and the second transistor T2.

[0068] In an exemplary embodiment, the driving transistor DT may be connected to a first power line L17 that provides a high potential power supply voltage ELVDD. For example, a first electrode of the driving transistor DT may be connected to the first power line L17. When the driving transistor DT is turned on, the high potential power supply voltage ELVDD provided by the first power line L17 may be transmitted from the first electrode of the driving transistor DT to the second electrode.

[0069] In an exemplary embodiment, the first transistor T1 may be connected to at least one of the first light emitting diode 140 , the second transistor T2 , the 4-1st transistor T41 , and the seventh transistor T7 .

[0070] For example, the first electrode of the first transistor T1 may be connected to at least one of the second transistor T2 and the seventh transistor T7. The seventh transistor T7 may be connected to the driving transistor DT and the fifth transistor T5. The second electrode of the first transistor T1 may be connected to at least one of the first light emitting diode 140 and the 4-1 transistor T41. The gate electrode of the first transistor T1 may be connected to the first control line L10. The first transistor T1 may be turned on or off by the first control signal P(k) provided through the first control line L10. When the first transistor T1 is turned on, the voltage through the driving transistor DT and the seventh transistor T7 may be input to the first light emitting diode 140 (e.g., the anode of the first light emitting diode 140).

[0071] Here, the first control signal P(k) may include a kth first control signal provided to the kth column in response to the pixel circuit PC provided in the kth column (k is a positive integer). The first control signal P(k) is provided by the mode controller (or mode control circuit) during the first mode (e.g., privacy mode) and may control the driving (or light emission) of the first light emitting diode 140 in which the first lens is provided. Therefore, during the first mode, the first light emitting diode 140 emits light, while the second light emitting diode 150 does not emit light during the first mode.

[0072] In an exemplary embodiment, the second transistor T2 may be connected to at least one of the second light emitting diode 150 , the first transistor T1 , the 4-2 nd transistor T42 , and the seventh transistor T7 .

[0073] For example, the first electrode of the second transistor T2 may be connected to at least one of the first transistor T1 and the seventh transistor T7. The second electrode of the second transistor T2 may be connected to at least one of the 4-2 transistor T42 and the second light emitting diode 150. The seventh transistor T7 may be connected to the driving transistor DT and the fifth transistor T5. The gate electrode of the second transistor T2 may be connected to the second control line L20. The second transistor T2 may be turned on or off by the second control signal S(k) provided through the second control line L20. When the second transistor T2 is turned on, the voltage through the driving transistor DT and the seventh transistor T7 may be input to the second light emitting diode 150 (e.g., the anode of the second light emitting diode 150).

[0074] Here, the second control signal S(k) may include a k-th second control signal provided to the k-th column in response to the pixel circuit PC provided in the k-th column (k is a positive integer). The second control signal S(k) is provided by the mode controller (or mode control circuit) during the second mode (e.g., sharing mode), and may control the driving (or light emission) of the second light emitting diode 150 in which the second lens is provided. Therefore, the second light emitting diode 150 emits light during the second mode, while the first light emitting diode 140 does not emit light during the second mode.

[0075] In an exemplary embodiment, a first lens may be disposed on the first light emitting diode 140. The viewing angle of the region where the first light emitting diode 140 is disposed may correspond to a first value by the first lens. For example, the viewing angle of the region where the first light emitting diode 140 is disposed may be equal to or less than the first value. A second lens may be disposed on the second light emitting diode 150. The viewing angle of the region where the second light emitting diode 150 is disposed may correspond to a second value by the second lens. The second value may be greater than the first value. For example, the viewing angle of the region where the second light emitting diode 150 is disposed may be equal to or greater than the second value.

[0076] In an exemplary embodiment, the area where the first light emitting diode 140 is provided with the pixel circuit PC may have a viewing angle of a first value to provide light to a range corresponding to the front passenger seat. The area where the second light emitting diode 150 is provided may have a viewing angle of a second value to provide light to a range corresponding to the front passenger seat and the driver's seat next to the front passenger seat.

[0077] In an exemplary embodiment, the third transistor T3 may be connected to at least one of the 4-1 th transistor T41 , the 4-2 th transistor T42 , the sixth transistor T6 , and the capacitor Cst.

[0078] For example, the first electrode of the third transistor T3 can be connected to the sixth transistor T6 and the capacitor Cst. The second electrode of the third transistor T3 can be connected to the 4-1 transistor T41 and the 4-2 transistor T42. The gate electrode of the third transistor T3 can be connected to the light emitting signal line L15 providing the light emitting signal EM(n). When the pixel circuit PC is arranged in the nth (n is a positive integer) pixel row, the light emitting signal EM(n) can correspond to the nth light emitting signal EM(n) provided to the nth row. The third transistor T3 can be turned on or off by the light emitting signal EM(n). The second electrode of the third transistor T3 can be connected to the reference voltage line L11 providing the reference voltage Vref, for example, the second power line.

[0079] In an exemplary embodiment, the 4-1th transistor T41 may be connected to at least one of the first transistor T1 , the third transistor T3 , and the first light emitting diode 140 .

[0080] For example, a first electrode of the 4-1st transistor T41 may be connected to the third transistor T3. A second electrode of the 4-1st transistor T41 may be connected to the first transistor T1 and the first light emitting diode 140. A gate electrode of the 4-1st transistor T41 may be connected to the n-th second scan line L13. Therefore, the 4-1st transistor T41 may be provided with the n-th second scan signal Scan2(n), and may be turned on or off by the n-th second scan signal Scan2(n).

[0081] In an exemplary embodiment, the 4-2 th transistor T42 may be connected to at least one of the second transistor T2 , the third transistor T3 , and the second light emitting diode 150 .

[0082] For example, a first electrode of the 4-2 transistor T42 may be connected to the third transistor T3. A second electrode of the 4-2 transistor T42 may be connected to the second transistor T2 and the second light emitting diode 150. A gate electrode of the 4-2 transistor T42 may be connected to the n-th second scan line L13. Therefore, the 4-2 transistor T42 may be provided with the n-th second scan signal Scan2(n), and may be turned on or off by the n-th second scan signal Scan2(n).

[0083] In an exemplary embodiment, the fifth transistor T5 may be connected to at least one of the driving transistor DT, the 4-1 th transistor T41 , the 4-2 th transistor T42 , the capacitor Cst, and the seventh transistor T7 .

[0084] For example, a first electrode of the fifth transistor T5 may be connected to the driving transistor DT and the capacitor Cst. A second electrode of the fifth transistor T5 may be connected to the driving transistor DT and the seventh transistor T7. A gate electrode of the fifth transistor T5 may be connected to the nth second scan line L13 to which the second scan signal Scan2(n) is provided in the nth row. The fifth transistor T5 may be provided with the nth second scan signal Scan2(n) and may be turned on or off by the nth second scan signal Scan2(n).

[0085] According to an exemplary embodiment, the nth first scan line L18 may provide the nth first scan signal. In this case, the nth first scan signal may be provided to the gate electrode of the sixth transistor T6. The nth second scan line L13 may provide the nth second scan signal. In this case, the nth second scan signal may be provided to the gate electrodes of the 4-1 transistor T41, the 4-2 transistor T42, and the 5th transistor T5.

[0086] In an exemplary embodiment, the sixth transistor T6 may be connected to at least one of the third transistor T3 and the capacitor Cst.

[0087] For example, a first electrode of the sixth transistor T6 may be connected to the third transistor T3 and the capacitor Cst. A second electrode of the sixth transistor T6 may be connected to a data line L16 providing a data voltage Vdata. A gate electrode of the sixth transistor T6 may be connected to an nth first scan line L18 providing an nth first scan signal Scan1(n). The sixth transistor T6 may be provided with an nth first scan signal Scan1(n) and may be turned on or off by the nth first scan signal Scan1(n). When the sixth transistor T6 is turned on, the data voltage Vdata may be transmitted from the second electrode to the first electrode.

[0088] In an exemplary embodiment, the seventh transistor T7 may be connected to at least one of the first transistor T1 , the second transistor T2 , the fifth transistor T5 , and the driving transistor DT.

[0089] For example, the first electrode of the seventh transistor T7 may be connected to at least one of the fifth transistor T5 and the driving transistor DT. The second electrode of the seventh transistor T7 may be connected to at least one of the first transistor T1 and the second transistor T2. The gate electrode of the seventh transistor T7 may be connected to the light emitting signal line L30 providing the light emitting signal EM(n). The seventh transistor T7 may be turned on or off based on the light emitting signal EM(n). When the seventh transistor is turned on, a voltage (or current) may be provided from the first electrode of the seventh transistor T7 to the second electrode.

[0090] In an exemplary embodiment, the first light emitting diode 140 and / or the second light emitting diode 150 may be connected to a third power line L19 providing a low potential power voltage ELVSS. For example, a cathode of the first light emitting diode 140 and a cathode of the second light emitting diode 150 are connected to the third power line L19 to be provided with the low potential power voltage ELVSS.

[0091] According to an exemplary embodiment, the low potential power supply voltage may be a ground voltage (eg, 0 V). For example, a voltage corresponding to the ground voltage may be supplied to the cathodes of the first light emitting diode 140 and the second light emitting diode 150 , but is not limited thereto.

[0092] Figure 4 is an enlarged plan view illustrating a layout of a lens included in one pixel of a display device according to an exemplary embodiment of the present disclosure. Figure 5 is along Figure 4 A cross-sectional view taken along line AA'. Figure 6 is along Figure 4 Cross-sectional view taken along line BB'. Figure 4 A plane of a pixel PX is illustrated when three sub-pixels RSP, GSP, and BSP are provided in one pixel PX. Figure 5 Example along Figure 4 The cross section taken by line A-A', Figure 6 Example along Figure 4 However, although Figure 5 and Figure 6 , for convenience of description, only regions corresponding to the first lens region RNE and the second lens region RWE of the red subpixel RSP among the plurality of subpixels RSP, GSP, and BSP are illustrated, but other subpixels GSP and BSP may also be formed to have the same configuration.

[0093] First, refer to Figure 4 , the pixel PX may include a plurality of sub-pixels RSP, GSP, and BSP representing different colors. For example, the pixel PX may include a blue sub-pixel BSP for implementing blue light, a red sub-pixel RSP for implementing red light, and a green sub-pixel GSP for implementing green light. According to an exemplary embodiment, the blue sub-pixel BSP may correspond to a first sub-pixel, the red sub-pixel RSP may correspond to a second sub-pixel, and the green sub-pixel GSP may correspond to a third sub-pixel. The pixel circuit PC may correspond to each of the sub-pixels RSP, GSP, and BSP. The corresponding pixel circuit PC (for example, Figure 3 The pixel circuit) may be provided in each of the sub-pixels RSP, GSP and BSP.

[0094] The sub-pixels RSP, GSP, and BSP may include first lens areas RNE, GNE, and BNE and second lens areas BWE, RWE, and GWE, respectively providing different viewing angles.

[0095] The second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP may be operated independently of the first lens regions RNE, GNE, and BNE of the corresponding pixels PX. For example, in each of the sub-pixels RSP, GSP, and BSP, a first light emitting diode 140 (e.g., Figure 3 The first light emitting diode 140 and the second light emitting diode 150 (eg, Figure 3 The first light emitting diode 140 is located in the first lens regions RNE, GNE and BNE of the corresponding sub-pixels RSP, GSP and BSP, and the second light emitting diode 150 is located in the second lens regions RWE, GWE and BWE of the corresponding sub-pixels RSP, GSP and BSP.

[0096] In one pixel PX, the first light emitting diode 140 and the second light emitting diode 150 may be disposed in each of the first lens region RNE, GNE, BNE and the second lens region RWE, GWE, BWE of the plurality of sub-pixels RSP, GSP and BSP.

[0097] For example, in one pixel PX, a first light emitting diode 140 and a second light emitting diode 150 may be provided, wherein the first light emitting diode 140 is provided in a first lens region RNE of a red sub-pixel RSP, and the second light emitting diode 150 is provided in a second lens region RWE of the red sub-pixel RSP. In one pixel PX, a first light emitting diode 140 and a second light emitting diode 150 may be provided, wherein the first light emitting diode 140 is provided in a first lens region GNE of a green sub-pixel GSP, and the second light emitting diode 150 is provided in a second lens region GWE of the green sub-pixel GSP. In addition, in one pixel PX, a first light emitting diode 140 and a second light emitting diode 150 may be provided, wherein the first light emitting diode 140 is provided in a first lens region BNE of a blue sub-pixel BSP, and the second light emitting diode 150 is provided in a second lens region BWE of the blue sub-pixel BSP.

[0098] At the same time, refer to Figure 4 In the blue sub-pixel BSP of one pixel PX, two first lens areas BNE may be disposed. However, in the blue sub-pixel BSP of one pixel PX, only one first lens area BNE may be disposed, but is not limited thereto.

[0099] Reference Figure 4 In the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP, a plurality of first lenses 161 are disposed, and the first lenses are disposed to overlap with the light emitting region EA1 of the first light emitting diode 140. In the second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP, a second lens 162 is disposed, and the second lens is disposed to overlap with the light emitting region EA2 of the second light emitting diode 150. At this time, the first lens regions RNE, GNE, and BNE may have a viewing angle of a first value, and the second lens regions RWE, GWE, and BWE may have a viewing angle of a second value higher than the viewing angle of the first value. At the same time, the following will be referred to together Figure 5 and Figure 6 A specific layout structure of the plurality of first lenses 161 and second lenses 162 is described.

[0100] Refer to Figure 5 and Figure 6According to an exemplary embodiment of the present disclosure, a display device 100 may include a substrate 110, a buffer layer 111, a gate insulating layer 112, an interlayer insulating layer 113, a lower protective layer 114, an outer coating layer 115, a first transistor T1, a second transistor T2, a first light emitting diode 140, a second light emitting diode 150, an encapsulation member 180, a touch insulating layer 117, a touch sensor unit 190, a first lens 161, a second lens 162, and a lens protection layer 170.

[0101] The substrate 110 may be provided to support other components provided on the substrate 110. The substrate 110 may include an insulating material. The substrate 110 may include a transparent material. For example, the substrate 110 may include glass or plastic, but is not limited thereto.

[0102] The buffer layer 111 may be located between the substrate 110 and the driving portion of each sub-pixel RSP, GSP, BSP. The buffer layer 111 may suppress contamination caused by the substrate 110 during the process of forming the driving portion. For example, the top surface of the substrate 110 facing the driving portion of each sub-pixel RSP, GSP, BSP may be covered by the buffer layer 111. The driving portion of each sub-pixel RSP, GSP, BSP may be disposed on the buffer layer 111.

[0103] The buffer layer 111 may include an insulating material. For example, the buffer layer 111 may include an inorganic insulating material such as silicon oxide (SiOx) or silicon nitride (SiNx). The buffer layer 111 may have a multilayer structure. For example, the buffer layer 111 may have a stacked structure of a film formed of silicon nitride (SiNx) and a film formed of silicon oxide (SiOx), but is not limited thereto.

[0104] The gate insulating layer 112 may be located on the buffer layer 111. The gate insulating layer 112 may extend between the semiconductor layer and the gate electrode of the transistor. For example, the gate electrodes 122 and 132 of the first transistor T1 and the second transistor T2 may be insulated from the semiconductor layers 121 and 131 of the first transistor T1 and the second transistor T2 by the gate insulating layer 112. The gate insulating layer 112 may cover the first semiconductor layer 121 and the second semiconductor layer 131 of each sub-pixel RSP, GSP, BSP. The gate electrodes 122 and 132 of the first transistor T1 and the second transistor T2 may be located on the gate insulating layer 112.

[0105] The gate insulating layer 112 may include an insulating material. For example, the gate insulating layer 112 may include an inorganic insulating material, such as silicon oxide (SiO) or silicon nitride (SiN). The gate insulating layer 112 may include a material having a high dielectric constant. For example, the gate insulating layer 112 may include a high-K material, such as hafnium oxide (HfO). The gate insulating layer 112 may have a multilayer structure, but is not limited thereto.

[0106] The interlayer insulating layer 113 may be located on the gate insulating layer 112. The interlayer insulating layer 113 may extend between the gate electrode and the source electrode and between the gate electrode and the drain electrode of the transistor. For example, the source electrodes 123 and 133 and the drain electrodes 124 and 134 of the first transistor T1 and the second transistor T2 may be insulated from the gate electrodes 122 and 132 by the interlayer insulating layer 113. The interlayer insulating layer 113 may cover the gate electrodes 122 and 132 of the first transistor T1 and the second transistor T2. The source electrodes 123 and 133 and the drain electrodes 124 and 134 of each sub-pixel RSP, GSP, BSP may be located on the interlayer insulating layer 113. The gate insulating layer 112 and the interlayer insulating layer 113 may expose the source electrode region and the drain electrode region of each semiconductor layer 121, 131.

[0107] The interlayer insulating layer 113 may include an insulating material. For example, the interlayer insulating layer 113 may include an inorganic insulating material such as silicon oxide (SiO) or silicon nitride (SiN). The interlayer insulating layer 113 may be located on the gate insulating layer 112, but is not limited thereto.

[0108] The lower protective layer 114 may be located on the interlayer insulating layer 113. The lower protective layer 114 may suppress damage to the driving part due to external moisture and impact. The lower protective layer 114 may extend along the surface of the first transistor T1 and the second transistor T2. The lower protective layer 114 may contact the interlayer insulating layer 113 outside the driving part located in each sub-pixel RSP, GSP, BSP.

[0109] The lower protective layer 114 may include an insulating material. For example, the lower protective layer 114 may include an inorganic insulating material such as silicon oxide (SiO) or silicon nitride (SiN), but is not limited thereto.

[0110] The overcoat layer 115 may be located on the lower protective layer 114. The overcoat layer 115 may remove a step caused by a driving portion of each sub-pixel RSP, GSP, BSP. For example, a top surface of the overcoat layer 115 opposite to the substrate 110 may be a flat surface.

[0111] The overcoat layer 115 may include an insulating material. The overcoat layer 115 may include a material different from that of the lower protective layer 114. For example, the overcoat layer 115 may include an organic insulating material, but is not limited thereto.

[0112] The first transistor T1 may include a first semiconductor layer 121 , a first gate electrode 122 , a first source electrode 123 , and a first drain electrode 124 .

[0113] For example, the first semiconductor layer 121 may be located between the buffer layer 111 and the gate insulating layer 112, and the first gate electrode 122 may be located between the gate insulating layer 112 and the interlayer insulating layer 113. The first source electrode 123 and the first drain electrode 124 may be located between the interlayer insulating layer 113 and the lower protective layer 114. The first gate electrode 122 may overlap with the channel region of the first semiconductor layer 121. The first source electrode 123 may be electrically connected to the source region of the first semiconductor layer 121. The first drain electrode 124 may be electrically connected to the drain region of the first semiconductor layer 121.

[0114] The second transistor T2 may include a second semiconductor layer 131 , a second gate electrode 132 , a second source electrode 133 , and a second drain electrode 134 .

[0115] For example, the second semiconductor layer 131 may be located on the same layer as the first semiconductor layer 121, and the second gate electrode 132 may be located on the same layer as the first gate electrode 122. The second source electrode 133 and the second drain electrode 134 may be located on the same layer as the first source electrode 123 and the first drain electrode 124.

[0116] The first transistor T1 may be formed simultaneously with the second transistor T2 .

[0117] The first light emitting diode 140 and the second light emitting diode 150 of each sub-pixel RSP, GSP, BSP may be located on the outer coating layer 115 of each sub-pixel RSP, GSP, BSP. For example, the first lower electrode 141 of the first light emitting diode 140 may be electrically connected to the first drain electrode 124 (or the first source electrode 123) of the first transistor T1 through a contact hole passing through the lower protective layer 114 and the outer coating layer 115. The second lower electrode 151 of the second light emitting diode 150 may be electrically connected to the second drain electrode 134 (or the second source electrode 133) of the second transistor T2 through a contact hole passing through the lower protective layer 114 and the outer coating layer 115.

[0118] The first light emitting diode 140 may emit light representing a specific color. For example, the first light emitting diode 140 may include a first lower electrode 141, a first light emitting layer 142, and a first upper electrode 143 sequentially stacked on the substrate 110. At this time, the first lower electrode 141 may be an anode of the first light emitting diode 140, and the first upper electrode 143 may be a cathode of the first light emitting diode 140.

[0119] The first lower electrode 141 may include a conductive material. The first lower electrode 141 may include a material having a high reflectivity. For example, the first lower electrode 141 may include a metal such as aluminum (Al) or silver (Ag). The first lower electrode 141 may have a multilayer structure. For example, the first lower electrode 141 may have a structure in which a reflective electrode formed of a metal is located between transparent electrodes formed of a transparent conductive material such as ITO and IZO.

[0120] The first light emitting layer 142 may generate light having brightness corresponding to a voltage difference between the first lower electrode 141 and the first upper electrode 143. For example, the first light emitting layer 142 may include an emitting material layer (EML) including an emitting material. The emitting material may include an organic material, an inorganic material, or a mixed material.

[0121] The first light emitting layer 142 may have a multi-layer structure. For example, the first light emitting layer 142 may further include at least one of a hole injection layer HIL, a hole transport layer HTL, an electron transport layer ETL, and an electron injection layer EIL.

[0122] The first upper electrode 143 may include a conductive material. The first upper electrode 143 may include a material different from the first lower electrode 141. The transmittance of the first upper electrode 143 may be higher than the transmittance of the first lower electrode 141. For example, the first upper electrode 143 may be a transparent electrode formed of a transparent conductive material such as ITO and IZO. Alternatively, the first upper electrode 143 may be a transparent electrode in which a metal material is formed to a very thin thickness. Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, the light generated by the first light emitting layer 142 may be emitted through the first upper electrode 143.

[0123] The second light emitting diode 150 may realize the same color as the first light emitting diode 140 disposed in the same sub-pixel RSP, GSP, BSP. The second light emitting diode 150 may have the same configuration as the first light emitting diode 140. For example, the second light emitting diode 150 may include a second lower electrode 151, a second light emitting layer 152, and a second upper electrode 153 sequentially stacked on the substrate 110. At this time, the second lower electrode 151 may be an anode of the second light emitting diode 150, and the second upper electrode 153 may be a cathode of the second light emitting diode 150.

[0124] The second lower electrode 151 may correspond to the first lower electrode 141, the second light emitting layer 152 may correspond to the first light emitting layer 142, and the second upper electrode 153 may correspond to the first upper electrode 143. For example, the second lower electrode 151 having the same structure as the first lower electrode 141 may be formed for the second light emitting diode 150, and this is the same for the second light emitting layer 152 and the second upper electrode 153. For example, the first light emitting diode 140 and the second light emitting diode 150 may be formed to have the same structure. However, it is not limited thereto, and in some cases, at least part of the configuration of the first light emitting diode 140 and the second light emitting diode 150 may be formed to be different.

[0125] In an exemplary embodiment, the second light emitting layer 152 may be spaced apart from the first light emitting layer 142. Therefore, in the display device according to the exemplary embodiment of the present disclosure, light emission caused by leakage current may be suppressed.

[0126] According to an exemplary embodiment of the present disclosure, in the display device 100 , light may be generated by only one of the first light emitting layer 142 and the second light emitting layer 152 by a user's selection or according to a predetermined condition.

[0127] The second lower electrode 151 of each sub-pixel RSP, GSP, BSP may be spaced apart from the first lower electrode 141 of the corresponding sub-pixel RSP, GSP, BSP. For example, the bank insulating layer 116 may be located between the first lower electrode 141 and the second lower electrode 151 of each sub-pixel RSP, GSP, BSP. The bank insulating layer 116 may include an insulating material. For example, the bank insulating layer 116 may include an organic insulating material. The bank insulating layer 116 may include a material different from the overcoat layer 115, but is not limited thereto.

[0128] The second lower electrode 151 of each sub-pixel RSP, GSP, BSP may be insulated from the first lower electrode 141 of the corresponding sub-pixel RSP, GSP, BSP by the bank insulating layer 116. For example, the bank insulating layer 160 may cover the edge of the first lower electrode 141 and the edge of the second lower electrode 151 located in each sub-pixel RSP, GSP, BSP.

[0129] The bank insulating layer 160 may divide the light emitting area EA1 of the first light emitting diode 140 and the light emitting area EA2 of the second light emitting diode 150. For example, the light emitting area EA1 of the first light emitting diode 140 may be divided by the edge area of ​​the first lower electrode 141 covered by the bank insulating layer 160. The light emitting area EA2 of the second light emitting diode 150 may be divided by the edge area of ​​the second lower electrode 151 covered by the bank insulating layer 160. At this time, referring to Figure 4, the size of the light emitting area EA1 of the first light emitting diode 140 divided in each sub-pixel RSP, GSP, BSP may be larger than the light emitting area EA2 of the second light emitting diode 150, but is not limited thereto.

[0130] The first light emitting layer 142 and the first upper electrode 143 of the first light emitting diode 140 located in each sub-pixel RSP, GSP, BSP may be disposed on the first lower electrode 141 and the bank insulating layer 116. Specifically, the first light emitting layer 142 and the first upper electrode 143 may be stacked on the partial region of the first lower electrode 141 exposed by the bank insulating layer 116 and the bank insulating layer 116. The second light emitting layer 152 and the second upper electrode 153 of the second light emitting diode 150 located in each sub-pixel RSP, GSP, BSP may be disposed on the second lower electrode 151 and the bank insulating layer 116. Specifically, the second light emitting layer 152 and the second upper electrode 153 may be stacked on the partial region of the second lower electrode 151 exposed by the bank insulating layer 116 and the bank insulating layer 116.

[0131] The second upper electrode 153 of each sub-pixel RSP, GSP, BSP may be electrically connected to the first upper electrode 143 of the corresponding sub-pixel RSP, GSP, BSP. For example, the voltage applied to the second upper electrode 153 of the second light emitting diode 150 located in each sub-pixel RSP, GSP, BSP may be equal to the voltage applied to the first upper electrode 143 of the first light emitting diode 140 located in the corresponding sub-pixel RSP, GSP, BSP. The second upper electrode 153 of each sub-pixel RSP, GSP, BSP may include the same material as the first upper electrode 143 of the corresponding sub-pixel RSP, GSP, BSP. For example, the second upper electrode 153 of each sub-pixel RSP, GSP, BSP may be formed simultaneously with the first upper electrode 143 of the corresponding sub-pixel RSP, GSP, BSP. The second upper electrode 153 of each sub-pixel RSP, GSP, BSP extends to the top surface of the bank insulating layer 116 to directly contact the first upper electrode 143 of the corresponding sub-pixel RSP, GSP, BSP. The brightness of the first lens areas BNE, RNE, and GNE and the brightness of the second lens areas BWE, RWE, and GWE located in the respective sub-pixels RSP, GSP, and BSP may be controlled by the driving current generated in the corresponding sub-pixels RSP, GSP, and BSP.

[0132] The encapsulation member 180 may be located on the first light emitting diode 140 and the second light emitting diode 150 of each sub-pixel RSP, GSP, BSP. The encapsulation member 180 may suppress the light emitting diodes 140 and 150 from being damaged due to moisture and impact from the outside. The encapsulation member 180 may have a multilayer structure. For example, the encapsulation member 180 may include a first encapsulation layer 181, a second encapsulation layer 182, and a third encapsulation layer 183 stacked in sequence, but the exemplary embodiments of the present disclosure are not limited thereto. The first encapsulation layer 181, the second encapsulation layer 182, and the third encapsulation layer 183 may include an insulating material. The second encapsulation layer 182 may include a material different from the first encapsulation layer 181 and the third encapsulation layer 183. For example, the first encapsulation layer 181 and the third encapsulation layer 183 are inorganic encapsulation layers including an inorganic insulating material, and the second encapsulation layer 182 may include an organic encapsulation layer including an organic insulating material. Therefore, the light emitting diodes 140 and 150 of the display device 100 can effectively suppress damage caused by moisture and impact from the outside.

[0133] The touch sensor unit 190 may be located on the packaging member 180. The touch sensor unit 190 may be disposed in an active area over the first and second light emitting diodes 140 and 150. The touch sensor unit 190 may be configured to sense an external touch input using a user's finger, a touch pen, or the like.

[0134] Reference Figure 5 and Figure 6 In the touch sensor unit 190 of each sub-pixel RSP, GSP, BSP, a plurality of first openings OP1 and second openings OP2 are provided, the first openings OP1 are provided to overlap with the light emitting area EA1 of the first light emitting diode 140, and the second openings OP2 are provided to overlap with the light emitting area EA2 of the second light emitting diode 150. At this time, the side surfaces of the plurality of first openings OP1 and second openings OP2 may be inclined surfaces. In one embodiment, the first openings OP1 and second openings OP2 widen in a direction away from the substrate 110.

[0135] The touch sensor unit 190 includes a plurality of bridge electrodes 191 , a plurality of touch electrodes 192 , and a touch insulating layer 117 between the bridge electrodes 191 and the touch electrodes 192 .

[0136] A plurality of bridge electrodes 191 may be located on the package member 180. The plurality of bridge electrodes 191 may be spaced apart from each other and located on the package member 180. Spaced regions of the plurality of bridge electrodes 191 may overlap with the light emitting region EA1 of the first light emitting diode 140 and the light emitting region EA2 of the second light emitting diode 150. At this time, spaced regions of the plurality of bridge electrodes 191 may correspond to the plurality of first openings OP1 and the second openings OP2.

[0137] For example, the plurality of bridge electrodes 191 may include a metal material such as titanium (Ti), aluminum (Al), silver (Ag), copper (Cu), and magnesium-silver alloy (Mg:Ag), or may be formed of a material having light reflective properties, but is not limited thereto.

[0138] The touch insulating layer 117 may be located on the plurality of bridge electrodes 191. The touch insulating layer 117 is disposed between the plurality of bridge electrodes 191 and the plurality of touch electrodes 192 to insulate the plurality of bridge electrodes 191 from the plurality of touch electrodes 192 in a region where the touch insulating layer 117 is disposed. For example, the touch insulating layer 117 may be made of an organic insulating material, but is not limited thereto.

[0139] Reference Figure 5 and Figure 6 , the touch insulating layer 117 is disposed to surround the side surfaces of the plurality of first openings OP1 and the second openings OP2. That is, in the touch sensor unit 190, the touch insulating layer 117 may not be disposed in the plurality of first openings OP1 and the second openings OP2.

[0140] A plurality of touch electrodes 192 may be located on the touch insulating layer 117. The plurality of touch electrodes 192 may be disposed on the side surfaces of the plurality of first openings OP1 and the second openings OP2 in the touch sensor unit 190. Therefore, a portion of each touch electrode in the plurality of touch electrodes 192 is disposed in a corresponding first opening OP1 in the plurality of first openings OP1, or in a corresponding second opening OP2. Figure 5 and Figure 6 As shown, the portion of the touch electrode 192 disposed in the first opening OP1 or the second opening OP2 is inclined (eg, an inclined portion) with respect to the bridge electrode 191 .

[0141] The plurality of touch electrodes 192 may be electrically connected to the plurality of bridge electrodes 191. For example, the plurality of touch electrodes 192 extend to side surfaces of the plurality of first and second openings OP1 and OP2 to be electrically connected to the plurality of bridge electrodes 191.

[0142] A plurality of touch electrodes 192 may be disposed on the touch insulating layer 117 to be spaced apart from each other. Interval regions of the plurality of touch electrodes 192 may overlap with the light emitting region EA1 of the first light emitting diode 140 and the light emitting region EA2 of the second light emitting diode 150. At this time, the interval regions of the plurality of touch electrodes 192 may correspond to the plurality of first openings OP1 and the second openings OP2.

[0143] The plurality of touch electrodes 192 may be formed of a material having light reflective properties. For example, the plurality of touch electrodes 192 may include a metal material such as titanium (Ti), aluminum (Al), silver (Ag), copper (Cu), and magnesium-silver alloy (Mg:Ag), but is not limited thereto.

[0144] Meanwhile, a touch buffer layer may be further disposed between the packaging member 180 and the bridge electrode 191 of the touch sensor unit 190 , but is not limited thereto.

[0145] A plurality of first lenses 161 and a second lens 162 may be located on the packaging member 180 and the touch sensor unit 190 of each sub-pixel RSP, GSP, BSP. The plurality of first lenses 161 may be arranged to correspond to the plurality of first openings OP1, and the second lenses 162 may be arranged to correspond to the second openings OP2. The plurality of first lenses 161 may be arranged in the plurality of first openings OP1 to protrude above the first openings, and the second lenses 162 may be arranged in the second openings OP2 to protrude above the second openings. Therefore, the plurality of first lenses 161 and the second lenses 162 may be arranged to contact the touch electrode 192 in the plurality of first openings OP1 and the second openings OP2.

[0146] A plurality of first lenses 161 may be located on the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP.

[0147] For example, light generated by the first light emitting diode 140 in the sub-pixels RSP, GSP, and BSP may be emitted through the plurality of first lenses 161 of the corresponding sub-pixels RSP, GSP, and BSP. At this time, the traveling direction of the light passing through the plurality of first lenses 161 may be limited to the first direction and / or the second direction.

[0148] The plane shape of the plurality of first lenses 161 located in the sub-pixels RSP, GSP, and BSP may be a rectangular shape. In this case, the traveling direction of light emitted from the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP may be limited to the first direction and the second direction. However, the plane shape of the plurality of first lenses 161 may be a circle, but is not limited thereto.

[0149] The content provided by the first lens areas RNE, GNE and BNE of the sub-pixels RSP, GSP and BSP may not be shared by people around the user. When providing content through the first lens areas RNE, GNE and BNE, the content is provided in a first viewing angle range narrower than the second viewing angle range provided by the second lens areas RWE, GWE and BWE, which may be referred to as a first mode.

[0150] The second lens 162 may be positioned on the second lens areas BWE, RWE, and GWE of the sub-pixels RSP, GSP, and BSP.

[0151] For example, light generated by the second light emitting diode 150 of each sub-pixel RSP, GSP, BSP may be emitted through the second lens 162 of the corresponding sub-pixel RSP, GSP, BSP.

[0152] The second lens 162 may have a shape that does not limit light in at least one direction. For example, a planar shape of the second lens 162 in each of the sub-pixels RSP, GSP, BSP may have a stripe shape extending along the first direction.

[0153] In this case, the traveling direction of the light emitted from the second lens areas BWE, RWE and GWE of each sub-pixel RSP, GSP, BSP may not be limited to the first direction. For example, the content (or image) provided by the second lens areas BWE, RWE and GWE of each sub-pixel RSP, GSP, BSP may be shared by surrounding people adjacent to the user in the first direction. When the content is provided through the second lens areas BWE, RWE and GWE, the content is provided in a second viewing angle range wider than the first viewing angle range provided by the first lens areas BNE, RNE and GNE, and this may be referred to as a second mode.

[0154] The regions of the sub-pixels RSP, GSP, BSP where the plurality of first lenses 161 are disposed may be referred to as a plurality of first light emitting regions RE1, GE1, and BE1. For example, the plurality of first light emitting regions RE1, GE1, and BE1 may be regions where light generated by the first light emitting diodes 140 is emitted through the first lenses 161.

[0155] The regions of the sub-pixels RSP, GSP, BSP where the second lenses 162 are disposed may be referred to as second lens regions RWE, GWE, and BWE. For example, the second lens regions RWE, GWE, and BWE may be regions where light generated by the second light emitting diodes 150 is emitted through the second lenses 162.

[0156] The plurality of first light emitting regions RE1, GE1, and BE1 included in the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP may have a shape corresponding to the plurality of first lenses 161 located on the first lens regions RNE, GNE, and BNE of the corresponding sub-pixels RSP, GSP, and BSP. For example, a planar shape of the plurality of first light emitting regions RE1, GE1, and BE1 defined in the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP may be a rectangular shape.

[0157] At this time, refer to Figure 4 , a plurality of first lenses 161 may be disposed in a matrix form in the light emitting area EA1 of the first light emitting diode 140. Therefore, the bridge electrode 191 and the touch electrode 192 may be disposed between the plurality of first lenses 161 on a plane.

[0158] The plurality of first lenses 161 located on the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP may have the same shape as the plurality of first light emitting regions RE1, GE1, and BE1 included in the first lens regions RNE, GNE, and BNE of the corresponding sub-pixels RSP, GSP, and BSP. In addition, the plurality of first lenses 161 may have a size greater than the plurality of first light emitting regions RE1, GE1, and BE1, so that the efficiency of emitting light from the first light emitting regions RE1, GE1, and BE1 of the sub-pixels RSP, GSP, and BSP may be improved.

[0159] The second light emitting regions RE2, GE2, and BE2 included in the second lens regions RWE, GWE, and BWE in the sub-pixels RSP, GSP, and BSP may have a shape corresponding to the second lens 162 located on the second lens regions RWE, GWE, and BWE of the corresponding sub-pixels RSP, GSP, and BSP. For example, the planar shapes of the second light emitting regions RE2, GE2, and BE2 included in the second lens regions RWE, GWE, and BWE in the sub-pixels RSP, GSP, and BSP have a strip shape extending in the first direction.

[0160] The second lens 162 located on the second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP may have the same size as the second light emitting regions RE2, GE2, and BE2 included in the second lens regions RWE, GWE, and BWE of the corresponding sub-pixels RSP, GSP, and BSP. In addition, the second lens 162 may have a size greater than that of the second light emitting regions RE2, GE2, and BE2, so that the efficiency of emitting light from the second light emitting regions RE2, GE2, and BE2 of the sub-pixels RSP, GSP, and BSP may be improved.

[0161] In an exemplary embodiment, the first lens regions RNE, GNE and BNE of the sub-pixels RSP, GSP and BSP may include a plurality of first light emitting regions RE1, GE1 and BE1. The second lens regions RWE, GWE and BWE of the sub-pixels RSP, GSP and BSP may include one second light emitting region RE2, GE2, BE2, respectively.

[0162] In an exemplary embodiment, a plurality of first lenses 161 may be disposed on the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP. One second lens 162 may be disposed on the second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP. In an exemplary embodiment, the area of ​​each of the first light emitting regions RE1, GE1, and BE1 located in the first lens regions RNE, GNE, and BNE of the plurality of sub-pixels RSP, GSP, and BSP may be specified by a specific value. For example, the size of each of the first light emitting regions RE1, GE1, and BE1 located in the first lens regions RNE, GNE, and BNE may be implemented to be the same. The first light emitting regions RE1, GE1, and BE1 included in the first lens regions RNE, GNE, and BNE of the plurality of sub-pixels RSP, GSP, and BSP may have the same area as the first light emitting regions RE1, GE1, and BE1 included in the first lens regions RNE, GNE, and BNE of the adjacent sub-pixels RSP, GSP, and BSP.

[0163] In an exemplary embodiment, the number of the plurality of first light emitting regions RE1, GE1, BE1 may vary in each sub-pixel RSP, GSP, BSP. For example, the number of the first light emitting regions BE1 defined in the first lens region BNE of the blue sub-pixel BSP may be greater than the number of the first light emitting regions GE1 defined in the first lens region GNE of the green sub-pixel GSP. The number of the first light emitting regions GE1 defined in the first lens region GNE of the green sub-pixel GSP may be greater than the number of the first light emitting regions RE1 defined in the first lens region RNE of the red sub-pixel RSP. In this case, the efficiency deviation of the first light emitting diode 140 located on the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP may be compensated by the number of the first light emitting regions RE1, GE1, and BE1 defined in the first lens regions RNE, GNE, and BNE of the sub-pixels RSP, GSP, and BSP.

[0164] In an exemplary embodiment, the second light emitting regions RE2, GE2, and BE2 may have different sizes in each sub-pixel RSP, GSP, and BSP. For example, the second light emitting region BE2 of the blue sub-pixel BSP may have a size different from the second light emitting region GE2 of the green sub-pixel GSP, and may have a size different from the second light emitting region RE2 of the red sub-pixel RSP. The size of the second light emitting region BE2 of the blue sub-pixel BSP may be larger than the size of the second light emitting region GE2 of the green sub-pixel GSP. The size of the second light emitting region GE2 of the green sub-pixel GSP may be larger than the size of the second light emitting region RE2 of the red sub-pixel RSP. Therefore, in the display device according to an exemplary embodiment of the present disclosure, the efficiency deviation of the second light emitting diode 150 located on the second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP may be compensated by the sizes of the second light emitting regions RE2, GE2, and BE2 defined in the second lens regions RWE, GWE, and BWE of the sub-pixels RSP, GSP, and BSP.

[0165] In an exemplary embodiment, the lens protection layer 170 may be located on the plurality of first lenses 161 and second lenses 162 of the sub-pixels RSP, GSP, and BSP. The lens protection layer 170 may include an insulating material. For example, the lens protection layer 170 may include an organic insulating material. The refractive index of the lens protection layer 170 may be smaller than the refractive index of the first lens 161 and the refractive index of the second lens 162 located in each of the sub-pixels RSP, GSP, and BSP. Therefore, in the display device 100 according to an exemplary embodiment of the present disclosure, light passing through the first lens 161 and the second lens 162 in each of the sub-pixels RSP, GSP, and BSP may not be reflected toward the substrate 110 by the refractive index difference from the lens protection layer 170.

[0166] In the following, reference will be made to FIG. 7A to FIG. 7G A manufacturing process of a display device according to an exemplary embodiment of the present disclosure is described in detail.

[0167] Figures 7A to 7G is a process diagram for explaining a manufacturing process of a display device according to an exemplary embodiment of the present disclosure. FIG. 7A to FIG. 7G In the embodiment, for the convenience of description, only the region corresponding to the first lens region RNE of the red sub-pixel RSP among the first lens regions RNE, GNE and BNE and the second lens regions RWE, GWE and BWE of the plurality of sub-pixels RSP, GSP and BSP is illustrated. However, other sub-pixels may also be formed by the same process.

[0168] First, refer to Fig. 7A, a first transistor T1 is formed on the substrate 110 to correspond to each sub-pixel RSP, GSP, BSP, and a first light emitting diode 140 electrically connected to the first transistor T1 is formed on the first transistor T1. A packaging member 180 is formed above the first light emitting diode 140 to cover the first light emitting diode 140. At this time, the packaging member 180 may have a multi-layer structure including a first packaging layer 181, a second packaging layer 182, and a third packaging layer 183 stacked in sequence.

[0169] Next, refer to Figure 7B , a material 191' for forming a bridge electrode of the touch sensor unit 190 is disposed on the packaging member 180. At this time, the material 191' for forming a bridge electrode may be disposed on the entire surface of the packaging member 180 and patterned to form the bridge electrode 191 through a subsequent process.

[0170] Next, refer to Figure 7C , a touch insulating layer 117 is formed on the material 191' to form a bridge electrode. The touch insulating layer 117 may be arranged to expose the material 191' to form the bridge electrode. For example, the process of arranging the touch insulating layer 117 to expose the material 191' for forming the bridge electrode may be performed during the process of patterning the material for forming the touch insulating layer 117 on the material 191' for forming the bridge electrode, but is not limited thereto.

[0171] Next, refer to Fig.7D , the material 192' for forming the touch electrode is disposed on the touch insulating layer 117. At this time, the material 192' for forming the touch electrode may be disposed on the top surface of the touch insulating layer 117 and the top surface of the material 191' for forming the bridge electrode exposed from the touch insulating layer 117. At this time, the material 192' for forming the touch electrode may be disposed to contact the material 191' for forming the bridge electrode exposed from the touch insulating layer 117.

[0172] Next, refer to Fig. 7E A plurality of first openings OP1 are formed in a contact region between the material 192 ′ for forming the touch electrode and the material 191 ′ for forming the bridge electrode. Thus, a plurality of bridge electrodes 191 and a plurality of touch electrodes 192 of the touch sensor unit 190 may be formed.

[0173] Meanwhile, the step of forming the plurality of bridge electrodes 191 and the step of forming the plurality of touch electrodes 192 can be simultaneously completed using the same mask through the process of forming the plurality of first openings OP1. Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, the number of processes for forming the plurality of bridge electrodes 191 and the plurality of touch electrodes 192 and the number of patterning masks can be reduced compared to the example in which the step of forming the plurality of touch electrodes 192 is performed after the step of forming the plurality of bridge electrodes 191.

[0174] Next, refer to Figure 7F , the lens forming material LM is disposed in each of the plurality of first openings OP1. For example, the process of arranging the lens forming material LM may be configured by a process of patterning the lens forming material LM on the packaging member 180 exposed from the touch sensor unit 190 through the plurality of first openings OP1, but is not limited thereto.

[0175] Next, refer to Figure 7G , the lens forming material LM disposed in the plurality of first openings OP1 of the touch sensor unit 190 can be formed into the first lens 161 by a thermal reflow process. For example, in the process of forming the first lens 161, the lens forming material LM is melted by a thermal reflow process. The lens forming molten material LM becomes liquid, and the first opening is filled with the liquid lens forming material. In addition, the liquid lens forming material not contained in the first opening is arranged to protrude above the first opening, and the top surface of the lens forming material in the liquid state can have a round shape, such as a spherical convex lens shape, by surface tension. Thereafter, when the liquid lens forming material is solidified, the first lens 161 can be formed. Therefore, the first lens 161 can be formed as a convex lens having a convex top surface.

[0176] Next, a process for forming the lens protection layer 170 may be formed on the plurality of first lenses 161 and the touch sensor unit 190 .

[0177] In the display device 100 according to the exemplary embodiment of the present disclosure, the process of arranging the plurality of first lenses 161 in the plurality of first openings OP1 of the touch sensor unit 190 may be performed by a self-alignment method using a thermal reflow process. Therefore, a process error of the plurality of first lenses 161 during the process of arranging the plurality of first lenses 161 in the plurality of first openings OP1 may be reduced or minimized.

[0178] For example, during the process of arranging the lens forming material LM in each of the plurality of first openings OP1, due to process errors, there may be misaligned lens forming material LM′, such as Figure 7FAs shown. At this time, the misaligned lens forming material LM' is melted by the heat reflow process, and the molten liquid misaligned lens forming material is filled in the first opening OP1 and solidified to form the first lens 161. The first lens 161 formed by the misaligned lens forming material LM' can be formed by a self-alignment method, in which the molten material is solidified along the surface of the first opening OP1. Therefore, even if there is a misaligned lens forming material LM', the first lens 161 can be formed substantially the same as the normally aligned lens forming material LM, so that the process error of the first lens 161 in the first opening OP1 can be reduced or minimized. Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, the process error of the multiple first lenses 161 during the process of arranging the multiple first lenses 161 in the multiple first openings OP1 can be reduced or minimized.

[0179] Hereinafter, the effective areas and vertical brightness of the plurality of first lenses 161 of the display device 100 according to the comparative embodiment and the exemplary embodiment of the present disclosure will be described in detail with reference to Table 1 together.

[0180] [Table 1]

[0181] Inspection items Comparative Implementation Methods Exemplary embodiments of the present disclosure Ratio of lens area to light emitting area 62％ 62％ Ratio of effective area to luminous area 13.9％ 15.4％ Vertical Brightness 100％ 243％ A+ minimum brightness 100％ 419％

[0182] At this time, the evaluation was performed under the following conditions: In the display device according to the comparative embodiment, two first lenses are disposed on a light emitting region having a defined area. In the display device 100 according to the exemplary embodiment of the present disclosure, twelve first lenses 161 (for example, twelve first lenses 161 arranged at the bottom of the display device 100) that are smaller than the first lenses in the display device according to the comparative embodiment are disposed on a light emitting region having the same area as that of the display device according to the comparative embodiment. Figure 4 Here, the effective area refers to the effective area that contributes to the actual light emission, the vertical brightness is the brightness at 0° on the front side, and the A+Min brightness is the brightness of the viewing area within ±10° to the left and right and +8° to -4° up and down from 0° on the front side.

[0183] Referring to Table 1, the area of ​​the plurality of first lenses of the display device according to the comparative embodiment is 62% of the area of ​​the light emitting region, and the area of ​​the plurality of first lenses 161 of the display device 100 according to the exemplary embodiment of the present disclosure is 62% of the area of ​​the light emitting region. That is, in the display device according to the comparative embodiment and the display device 100 according to the exemplary embodiment of the present disclosure, even if the plurality of first lenses having different sizes are provided in the same region, the total area of ​​the lenses in one sub-pixel is set to be the same.

[0184] At this time, the effective area of ​​the plurality of first lenses of the display device according to the comparative embodiment is 13.9% of the light emitting area, and the effective area of ​​the plurality of first lenses 161 of the display device 100 according to the exemplary embodiment of the present disclosure is 15.4% of the light emitting area. Therefore, it can be understood that the effective area is improved in the display device 100 according to the exemplary embodiment of the present disclosure, in which the plurality of first lenses 161 having a smaller area are arranged in the same area. This is because in the display device 100 according to the exemplary embodiment of the present disclosure, the interference between the plurality of first lenses 161 disappears, so that the distance between the lenses can be reduced.

[0185] Referring to Table 1, when the vertical brightness of the plurality of first lenses of the display device according to the comparative embodiment is assumed to be 100%, the vertical brightness of the plurality of first lenses 161 of the display device 100 according to the exemplary embodiment of the present disclosure is improved to 243%. In addition, when the A+Min brightness of the plurality of first lenses of the display device according to the comparative embodiment is assumed to be 100%, the A+Min brightness of the plurality of first lenses 161 of the display device 100 according to the exemplary embodiment of the present disclosure is improved to 419%. Therefore, it can be understood that in the display device 100 according to the exemplary embodiment of the present disclosure, in which the plurality of first lenses 161 having a smaller size are provided on the same area, the vertical brightness and the A+Min brightness are also significantly improved.

[0186] In a display device, a first lens and a second lens providing different viewing angle modes may be arranged above a light-emitting diode and a touch sensor unit in one pixel to selectively implement a viewing angle mode. At this time, when a plurality of lenses are misaligned due to process errors during the process of placing the plurality of lenses above the light-emitting diode and the touch sensor unit, optical properties such as efficiency and vertical brightness of light emitted from the light-emitting area of ​​the light-emitting diode may deteriorate. At the same time, this misalignment problem may also occur during the process of arranging the touch sensor unit above the light-emitting diode, and the problem is that the light-emitting area is reduced due to the misaligned touch sensor unit. In other words, the more structures are arranged above the light-emitting diode, the more serious the above-mentioned misalignment problem is. Therefore, when misalignment occurs, the overlap of misaligned elements leads to a reduction in the effective area of ​​the plurality of lenses, so that there may be another problem that the performance for selectively implementing the viewing angle mode becomes degraded.

[0187] At this time, the smaller the size of the lens is under the same process conditions, the higher the possibility of process errors. The smaller the distance between the multiple lenses, the higher the possibility of interference between the lenses due to the process errors of each lens. Therefore, it may be difficult to design to reduce the size of the multiple lenses set in a limited area and the distance between the lenses, so that the design freedom of the size of the multiple lenses and the distance between the lenses will be limited.

[0188] At the same time, the larger the size of the multiple lenses, the smaller the area in which the multiple lenses are arranged in the same area, that is, the effective area. Therefore, when the distance between the lenses is reduced to arrange more lenses in the same area, the interference area between the multiple lenses due to the misalignment of each lens in the multiple lenses increases, resulting in a reduction in the effective area and a decrease in the luminous efficiency of the display device. Therefore, a technology is needed to arrange multiple lenses with reduced sizes in a limited area to reduce the arrangement distance between the lenses.

[0189] In the display device 100 according to the exemplary embodiment of the present disclosure, a plurality of first lenses 161 are provided to reduce or minimize process errors, so that the effective area of ​​the first lens 161 provided in a limited area can be further increased. Therefore, the luminous efficiency and vertical brightness of the display device 100 can be improved. Specifically, in the display device 100 according to the exemplary embodiment of the present disclosure, a plurality of first lenses 161 are provided in a plurality of first openings OP1 of the touch sensor unit 190 to be self-aligned using a thermal reflow process. Therefore, the process error during the process of arranging the bridge electrode 191, the touch electrode 192, and the plurality of first lenses 161 provided above the first light emitting diode 140 can be reduced or minimized. Therefore, the process error can be reduced or minimized, thereby improving the design freedom of the plurality of first lenses 161 to arrange the plurality of first lenses 161 with a further reduced size. In addition, the interference between the plurality of first lenses 161 is reduced to further reduce the distance between the plurality of first lenses 161. Therefore, the plurality of first lenses 161 can be provided in more areas on the same area, and the effective area of ​​the plurality of first lenses 161 can be increased. The interference between the multiple first lenses 161 is reduced or minimized to increase the effective area, so that the luminous efficiency of extracting light from the multiple first lenses 161 can also be improved. As shown in Table 1 above, by placing multiple first lenses with smaller sizes on the same area, the vertical brightness can be improved. Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, the multiple first lenses can be set with a further reduced size, and the arrangement distance between the lenses can be reduced. Therefore, the vertical brightness of the display device can be further improved, and the performance of selectively realizing the viewing angle mode can also be improved.

[0190] Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, a plurality of first lenses 161 are provided to reduce or minimize process errors, thereby further increasing the effective area of ​​the first lenses 161 provided in a limited area. In addition, the luminous efficiency and vertical brightness of the display device 100 can be improved.

[0191] In addition, in the display device 100 according to the exemplary embodiment of the present disclosure, the side surfaces of the plurality of first openings OP1 and second openings OP2 provided in the touch sensor unit 190 are inclined surfaces. Therefore, the touch sensor unit 190 as the side surface of the plurality of first openings OP1 and second openings OP2 can be configured to reflect the light emitted from the first light emitting diode 140 and the second light emitting diode 150 to the front direction of the display device. Therefore, the vertical brightness of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 below the touch sensor unit 190 can be improved.

[0192] For example, refer to Figure 5 , the first light LP1 emitted from the first light emitting diode 140 is emitted at an elevation angle close to vertical, so that the light can be emitted in a front direction of the display device through the first lens 161 without being reflected by the touch sensor unit 190 .

[0193] Next, second light LP2 emitted from the first light emitting diode 140 at an angle lower than the first light LP1 may be reflected by the touch electrode 192 to be extinguished, or may be reflected in a direction lower than the front direction of the display device so that the light is not visible from the front direction of the display device.

[0194] In addition, the third light LP3 emitted from the first light emitting diode 140 at a lower angle than the second light LP2 is reflected by the bridge electrode 191 of the touch sensor unit 190 and the first lower electrode 141 of the first light emitting diode 140 to be emitted through another adjacent first opening OP1. At this time, the third light LP3 may be configured to have a larger angle in the process of being reflected by the bridge electrode 191 and the first lower electrode 141, and may be emitted to the front direction of the display device.

[0195] Finally, the fourth light LP4 emitted from the first light emitting diode 140 at an angle smaller than the third light LP3 may be reflected by the touch electrode 192 disposed on the side surface of another adjacent first opening OP1 to be extinguished, or may be reflected in a direction lower than the front direction of the display device. Therefore, the light is not visible from the front direction of the display device.

[0196] Therefore, in the display device 100 according to the exemplary embodiment of the present disclosure, the side surfaces of the plurality of first openings OP1 and second openings OP2 provided in the touch sensor unit 190 are set as inclined surfaces. Therefore, the touch sensor unit 190 as the side surface of the plurality of first openings OP1 and second openings OP2 can be configured to reflect the light emitted from the first light emitting diode 140 to the front direction of the display device. Therefore, the brightness in the front direction of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 under the touch sensor unit 190 increases, so that the vertical brightness of the display device 100 can be further improved.

[0197] Meanwhile, in the display device 100 according to the exemplary embodiment of the present disclosure, the light emitting efficiency and vertical brightness of the display device 100 are improved. Therefore, the life of the display device 100 for the same power use can be improved, so that a lower power display device can be realized.

[0198] Figure 8 is an enlarged plan view of a display device according to another exemplary embodiment of the present disclosure. Figure 8 The display device 800 and Figures 1 to 7G The only difference between the display devices 100 is that a plurality of second lenses 862 are provided, but other configurations are substantially the same, so redundant description will be omitted.

[0199] Reference Figure 8 , a plurality of second lenses 862 may be provided. Therefore, a plurality of second openings OP2 may also be provided in the touch sensor unit 190, in which the second lenses 862 are provided.

[0200] For example, the plurality of second lenses 862 may be arranged in a row in the plurality of second light emitting regions RE2 and the light emitting region EA2 of the plurality of second light emitting diodes 150. The plurality of second lenses 862 may be disposed to extend in one direction in the plurality of second light emitting regions RE2 and the light emitting region EA2 of the plurality of second light emitting diodes 150. Therefore, the aspect ratio of the plurality of second lenses 862 may be greater than the aspect ratio of the plurality of first lenses 161. Therefore, the plurality of second openings OP2 provided with the plurality of second lenses 862 may have an aspect ratio greater than the plurality of first openings OP1 provided with the plurality of first lenses 161.

[0201] In the display device 800 according to another exemplary embodiment of the present disclosure, a plurality of first lenses 161 and a plurality of second lenses 862 are provided to reduce or minimize process errors. Therefore, the effective area of ​​the plurality of first lenses 161 and the plurality of second lenses 862 provided in a limited area can be further increased. Therefore, the luminous efficiency and vertical brightness of the display device 800 can be improved.

[0202] Specifically, in the display device 800 according to another exemplary embodiment of the present disclosure, the plurality of first lenses 161 and the plurality of second lenses 862 are arranged to be self-aligned in the plurality of first openings OP1 and the second openings OP2 of the touch sensor unit 190 using a thermal reflow process. Therefore, the process error during the process of setting the bridge electrode 191, the touch electrode 192, the plurality of first lenses 161 and the plurality of second lenses 862 arranged above the first light emitting diode 140 and the second light emitting diode 150 can be reduced or minimized. Therefore, the process error can be reduced or minimized, thereby improving the design freedom of the plurality of first lenses 161 and the plurality of second lenses 862 to set the plurality of first lenses 161 and the plurality of second lenses 862 to have a reduced size. In addition, the interference between the plurality of first lenses 161 and the interference between the plurality of second lenses 862 are reduced, so that the distance between the plurality of first lenses 161 and the distance between the plurality of second lenses 862 can also be reduced. Therefore, the plurality of first lenses 161 and the plurality of second lenses 862 can be arranged in more areas on the same area, and the effective areas of the plurality of first lenses 161 and the plurality of second lenses 862 can be increased. In addition, the interference between the plurality of first lenses 161 and the interference between the plurality of second lenses 862 is reduced or minimized to increase the effective area, so that the luminous efficiency of extracting light from the plurality of first lenses 161 and the plurality of second lenses 862 can also be improved. Therefore, in the display device 800 according to another exemplary embodiment of the present disclosure, the plurality of first lenses 161 and the plurality of second lenses 862 are arranged in a further reduced size, and the arrangement distance between the lenses can be reduced. Therefore, the vertical brightness of the display device can be further improved, and the performance of selectively realizing the viewing angle mode can also be improved. Therefore, in the display device 800 according to another exemplary embodiment of the present disclosure, the plurality of first lenses 161 and the plurality of second lenses 862 are arranged to minimize the process error. Therefore, the effective area of ​​the plurality of first lenses 161 and the plurality of second lenses 862 arranged in a limited area can be further increased, and the luminous efficiency and vertical brightness of the display device 800 can be improved. In addition, since the light emitting efficiency and vertical brightness of the display device 800 are improved, the life of the display device 800 for the same power usage can be improved, so that a lower power display device can be realized.

[0203] Fig. 9 is a cross-sectional view of a display device according to still another exemplary embodiment of the present disclosure. Fig. 9 The display device 900 and Figure 1 to 7G The only difference between the display devices 100 is the touch electrode 992, but other configurations are the same, so redundant description will be omitted.

[0204] Reference Fig. 9, the plurality of touch electrodes 992 may include a light reflection layer 992a and a light absorption layer 992b.

[0205] The light reflection layer 992a may be disposed on the bridge electrode 191. The light reflection layer 992a may be formed of a material having a light reflection property. For example, the light reflection layer 992a may include a metal material such as titanium (Ti), aluminum (Al), silver (Ag), copper (Cu), and magnesium-silver alloy (Mg:Ag), but is not limited thereto.

[0206] The light absorbing layer 992b may be disposed on the light reflecting layer 992a. The light absorbing layer 992b may be formed of a material having a light absorbing property. For example, the light absorbing layer may include niobium pentoxide (Nb2O5) or manganese (Mn), or may include nickel chromium alloy (NiCr) or aluminum oxide (Al2O3), and may be formed of a conductive material having a light absorbing property, but is not limited thereto.

[0207] Meanwhile, the light absorbing layer 992b may include a first layer, a second layer disposed on the first layer, and a third layer disposed on the second layer. For example, the light absorbing layer 992b may be configured as three layers, wherein the first layer and the third layer include niobium pentoxide (Nb2O5), and the second layer includes nickel-chromium alloy (NiCr). Alternatively, the light absorbing layer may also be configured as three layers, wherein the first layer and the third layer include manganese (Mn), and the second layer includes aluminum oxide (Al2O3), but is not limited thereto.

[0208] In the display device 900 according to still another exemplary embodiment of the present disclosure, the plurality of touch electrodes 992 are configured to include a light reflection layer 992 a and a light absorption layer 992 b , so that the vertical brightness of the display device 900 may be further improved.

[0209] Specifically, in the display device 900 according to another exemplary embodiment of the present disclosure, the side surfaces of the plurality of first openings OP1 and second openings OP2 provided in the touch sensor unit 990 are inclined surfaces. Therefore, the touch sensor unit 990, which is the side surface of the plurality of first openings OP1 and second openings OP2, can be configured to reflect the light emitted from the first light emitting diode 140 and the second light emitting diode 150 to the front direction of the display device. Therefore, the vertical brightness of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 under the touch sensor unit 990 can be improved. At this time, the plurality of touch electrodes 992 include a light reflecting layer 992a and a light absorbing layer 992b, so that the light emitted from the first light emitting diode 140 and the second light emitting diode 150 can be absorbed by the light absorbing layer 992b as the top surface of the touch electrode 992. Therefore, the brightness in the front direction of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 under the touch sensor unit 990 increases, so that the vertical brightness of the display device 900 can be further improved. Therefore, in the display device 900 according to another exemplary embodiment of the present disclosure, the plurality of touch electrodes 992 are configured to include a light reflection layer 992a and a light absorption layer 992b. Therefore, the vertical brightness of the display device 900 can be further improved, and a low-power display device 900 with improved lifespan can be realized.

[0210] Fig.10 is a cross-sectional view of a display device according to still another exemplary embodiment of the present disclosure. Fig.10 The display device 1000 and Figure 1 to 7G The only difference between the display devices 100 is the touch electrode 1092, but the other configurations are the same, so redundant description will be omitted.

[0211] The plurality of touch electrodes 1092 may be formed of a material having light absorption properties. For example, the plurality of touch electrodes 1092 may include niobium pentoxide (Nb2O5) or manganese (Mn), or may include nickel chromium (NiCr) or aluminum oxide (Al2O3), and may be formed of a conductive material having light absorption properties, but is not limited thereto.

[0212] In the display device 1000 according to still another exemplary embodiment of the present disclosure, the plurality of touch electrodes 1092 may be formed of a material having a light absorption property, so that the vertical brightness of the display device 1000 may be further improved.

[0213] Specifically, in the display device 1000 according to another exemplary embodiment of the present disclosure, the side surfaces of the plurality of first openings OP1 and the second openings OP2 provided in the touch sensor unit 1090 are inclined surfaces. Therefore, the touch sensor unit 1090, which is the side surface of the plurality of first openings OP1 and the second openings OP2, may be configured to reflect the light emitted from the first light emitting diode 140 and the second light emitting diode 150 to the front direction of the display device. Therefore, the vertical brightness of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 under the touch sensor unit 1090 may be improved. At this time, the plurality of touch electrodes 1092 are formed of a material having a light absorption property, so that the light emitted from the first light emitting diode 140 and the second light emitting diode 150 may be absorbed by the touch electrode 1092 formed of a material having a light absorption property. Therefore, the brightness in the front direction of the light emitted from the first light emitting diode 140 and the second light emitting diode 150 under the touch sensor unit 1090 increases, so that the vertical brightness of the display device 1000 is further improved. Therefore, in the display device 1000 according to another exemplary embodiment of the present disclosure, the plurality of touch electrodes 1092 are formed of a material having light absorption characteristics. Therefore, the vertical brightness of the display device 1000 can be further improved, and a low-power display device 1000 with improved lifespan can be realized.

[0214] Exemplary embodiments of the present disclosure may also be described as follows:

[0215] According to aspects of the present disclosure, a display device may include a substrate in which a plurality of pixels are arranged, each pixel including a plurality of sub-pixels representing different colors; a first light-emitting diode and a second light-emitting diode arranged in each of the plurality of sub-pixels; a touch sensor unit, the touch sensor unit being arranged above the first light-emitting diode and the second light-emitting diode; a plurality of first lenses, the plurality of first lenses being arranged to overlap with a light-emitting area of ​​the first light-emitting diode on the touch sensor unit and having a viewing angle of a first value; and a plurality of second lenses, the plurality of second lenses being arranged to overlap with a light-emitting area of ​​the second light-emitting diode on the touch sensor unit and having a viewing angle of a second value higher than the first value. In the touch sensor unit, a plurality of first openings may be arranged to overlap with a light-emitting area of ​​the first light-emitting diode, and a plurality of first lenses may be arranged to correspond to the plurality of first openings.

[0216] In the touch sensor unit, the second opening may be disposed to overlap with the light emitting region of the second light emitting diode, and the second lens may be disposed to correspond to the second opening.

[0217] A second opening and a second lens may be provided.

[0218] A plurality of second openings and a plurality of second lenses may be provided.

[0219] An aspect ratio of the plurality of second openings may be greater than an aspect ratio of the plurality of first openings.

[0220] The plurality of second openings may be disposed in a row in a light emitting region of the second light emitting diode.

[0221] The plurality of first lenses may be disposed in a matrix form in a light emitting region of the first light emitting diode.

[0222] The touch sensor unit may include a plurality of bridge electrodes; a touch insulating layer disposed on the plurality of bridge electrodes; and a plurality of touch electrodes disposed on the touch insulating layer and electrically connected to the plurality of bridge electrodes.

[0223] A plurality of touch electrodes may be disposed on side surfaces of the plurality of first openings in the touch sensor unit.

[0224] The plurality of touch electrodes may extend to side surfaces of the plurality of first openings on the touch insulation layer to be electrically connected to the plurality of bridge electrodes.

[0225] The first lens may be disposed to contact the plurality of touch electrodes in the plurality of first openings.

[0226] The first lenses may be disposed in the plurality of first openings.

[0227] The plurality of first openings may be surrounded by a touch insulation layer.

[0228] Side surfaces of the plurality of first openings may be inclined surfaces.

[0229] The plurality of touch electrodes may be formed of a material having a light reflective property.

[0230] The plurality of touch electrodes may include a light reflecting layer formed of a material having a light reflecting property; and a light absorbing layer disposed on the light reflecting layer and formed of a material having a light absorbing property.

[0231] The light absorbing layer may include a first layer, a second layer disposed on the first layer, and a third layer disposed on the second layer.

[0232] The first layer and the third layer may include niobium pentoxide (Nb2O5) or manganese (Mn), and the second layer may include nickel chromium (NiCr) or aluminum oxide (Al2O3).

[0233] The plurality of touch electrodes may be formed of a material having a light absorption property.

[0234] The first lens and the second lens may be formed by a thermal reflow method.

[0235] According to another aspect of the present disclosure, a display device may include a substrate in which a plurality of pixels are arranged, each pixel including a plurality of sub-pixels; a first light-emitting diode and a second light-emitting diode arranged in each of the plurality of sub-pixels; a touch sensor unit, the touch sensor unit being arranged above the first light-emitting diode and the second light-emitting diode; a plurality of first lenses, the plurality of first lenses being arranged to overlap with a light-emitting area of ​​the first light-emitting diode on the touch sensor unit and having a viewing angle of a first value; and a plurality of second lenses, the plurality of second lenses being arranged to overlap with a light-emitting area of ​​the second light-emitting diode on the touch sensor unit and having a viewing angle of a second value higher than the first value.

[0236] In the touch sensor unit, a plurality of first openings overlapping with the light emitting area of ​​the first light emitting diode and a second opening overlapping with the light emitting area of ​​the second light emitting diode may be set, a plurality of first lenses may be set to correspond to the plurality of first openings, and a second lens may be set to correspond to the second openings.

[0237] A second opening and a second lens may be provided.

[0238] A plurality of second openings and a plurality of second lenses may be provided.

[0239] The touch sensor unit may include a plurality of bridge electrodes; a touch insulating layer disposed on the plurality of bridge electrodes; and a plurality of touch electrodes disposed on the touch insulating layer and electrically connected to the plurality of bridge electrodes.

[0240] The plurality of touch electrodes are disposed on side surfaces of the plurality of first openings and second openings in the touch sensor unit.

[0241] The plurality of touch electrodes may be formed of a material having a light reflective property.

[0242] The plurality of touch electrodes may include a light reflecting layer formed of a material having a light reflecting property; and a light absorbing layer disposed on the light reflecting layer and formed of a material having a light absorbing property.

[0243] The plurality of touch electrodes may be formed of a material having a light absorbing property.

[0244] Although the exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and can be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are illustrative in all aspects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the specification and the accompanying drawings, and all technical concepts within its equivalent range should be interpreted as falling within the scope of the present disclosure.

[0245] CROSS-REFERENCE TO RELATED APPLICATIONS

[0246] This application claims the priority of Korean Patent Application No. 10-2023-0116992 filed on September 4, 2023 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.

Claims

1. A display device, comprising: substrate; A pixel located on the substrate, the pixel comprising a plurality of sub-pixels representing different colors, the sub-pixels comprising a plurality of first light emitting diodes and second light emitting diodes; a touch sensor unit located on the first light emitting diode and the second light emitting diode; a plurality of first lenses located on the touch sensor unit, the plurality of first lenses having a viewing angle of a first value, each of the first lenses overlapping with a light emitting area of ​​the first light emitting diode; as well as a second lens located on the touch sensor unit, the second lens having a viewing angle of a second value higher than the first value, the second lens overlapping a light emitting area of ​​the second light emitting diode, The touch sensor unit includes a plurality of first openings, each of the first openings overlaps with the light emitting area of ​​the first light emitting diode, and the first lens fills the first opening.

2. The display device according to claim 1, wherein: The touch sensor unit further includes a second opening overlapping the light emitting area of ​​the second light emitting diode, and the second lens fills the second opening.

3. The display device according to claim 2, wherein: The second opening has an aspect ratio greater than an aspect ratio of the plurality of first openings.

4. The display device according to claim 1, wherein: The plurality of first lenses form a matrix in the light emitting area of ​​the first light emitting diode.

5. The display device according to claim 1, wherein: The touch sensor unit further includes: multiple bridging electrodes; a touch insulating layer located on the plurality of bridge electrodes; and a plurality of touch electrodes located on the touch insulating layer, the plurality of touch electrodes being electrically connected to the plurality of bridge electrodes, and The plurality of touch electrodes cover side surfaces of the plurality of first openings.

6. The display device according to claim 5, wherein: The plurality of touch electrodes and the plurality of bridge electrodes are electrically connected on the side surfaces of the plurality of first openings.

7. The display device according to claim 5, wherein: In the plurality of first openings, the first lenses are in contact with the plurality of touch electrodes.

8. The display device according to claim 5, wherein: The plurality of first openings are surrounded by the touch insulation layer.

9. The display device according to claim 5, wherein: The side surfaces of the plurality of first openings are inclined surfaces.

10. The display device according to claim 5, wherein: The plurality of touch electrodes include a material having a light reflecting property.

11. The display device according to claim 5, wherein: The plurality of touch electrodes include: a light reflecting layer; and The light absorbing layer is located on the light reflecting layer, and the light absorbing layer comprises a material with light absorbing properties.

12. The display device according to claim 11, wherein: The light absorbing layer includes a first layer, a second layer located on the first layer, and a third layer located on the second layer, the first layer and the third layer include niobium pentoxide Nb2O5 or manganese Mn, and the second layer includes nickel chromium alloy NiCr or aluminum oxide Al2O3.

13. The display device according to claim 5, wherein: The plurality of touch electrodes have a light absorbing material.

14. The display device according to claim 1, wherein: The first lens and the second lens are formed by a thermal reflow method.

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