Display device

Abstract

An embodiment discloses a display device. The display device includes: a substrate; a plurality of light emitting elements arranged in each of a plurality of transfer areas on the substrate; and a black matrix having a plurality of transmission holes, each of the plurality of transmission holes corresponding to one of the plurality of light emitting elements, in which the plurality of transfer regions include a first transfer region and a second transfer region arranged adjacent to each other, the black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, the first region and the second region being arranged adjacent to each other based on a virtual boundary line, the first region includes a first transmission hole disposed at a first distance from the virtual boundary line and a second transmission hole disposed at a second distance from the virtual boundary line, and a size of the first transmission hole is larger than a size of the second transmission hole.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0151506, filed on November 6, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] Embodiments relate to a display device. Background Art

[0004] The electroluminescent display device includes an organic light emitting display device in which an organic light emitting diode (OLED) is provided and an inorganic light emitting display device (hereinafter referred to as “LED display device”) in which an inorganic light emitting diode (hereinafter referred to as “LED”) is provided.

[0005] Since the electroluminescent display device displays images using a self-luminous element, it does not require a separate light source such as a backlight unit, and can be implemented in a thin and diverse form.

[0006] Recently, as an example of an inorganic light-emitting display device, a micro LED display device in which a micro LED is arranged in a pixel has attracted attention as a next-generation display device. The micro LED may be an inorganic LED having a size of 100 μm or less. The micro LED is manufactured by a separate semiconductor process and may be arranged in each sub-pixel for each color by being transferred to a pixel position on a display panel substrate of the display device.

[0007] The micro-LED transfer process may be performed for each pre-divided transfer region. For example, in the transfer process of transferring the micro-LED to the panel, a plurality of micro-LEDs may be transferred for each divided transfer region. At this time, the transfer process may be performed sequentially or simultaneously for the plurality of transfer regions. Here, a unit of a plurality of micro-LEDs transferred to one of the plurality of transfer regions may be referred to as a stamp.

[0008] That is, the display panel may include a plurality of transfer regions for the transfer process, and one stamp may be transferred corresponding to one transfer region. Summary of the invention

[0009] The present specification provides a display panel and a display device including the same, which prevent or minimize the possibility of stains depending on a side viewing angle by arranging black matrix transmissive holes of different sizes based on a virtual boundary line (BL).

[0010] The present specification provides a display panel and a display device including the same, in which a size of a transmissive hole away from a virtual boundary line (BL) is reduced in consideration of reflective visibility.

[0011] The present specification provides a display panel having improved design freedom and a display device including the display panel by presenting various embodiments, in which the size and pitch of transmissive holes of a black matrix are adjusted.

[0012] The objects of the present disclosure are not limited to the above-mentioned objects, and other objects not mentioned herein will be clearly understood by those skilled in the art from the following description.

[0013] The object is achieved by a display device, which includes: a substrate; a plurality of light-emitting elements arranged in each of a plurality of transfer regions on the substrate; and a black matrix having a plurality of transmission holes, each transmission hole corresponding to one of the plurality of light-emitting elements, wherein the plurality of transfer regions include a first transfer region and a second transfer region arranged adjacent to each other, the black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, the first region and the second region are arranged adjacent to each other based on a virtual boundary line, the first region includes a first transmission hole set at a first distance from the virtual boundary line and a second transmission hole set at a second distance from the virtual boundary line, and the size of the first transmission hole is larger than the size of the second transmission hole.

[0014] The object is achieved by a display device, which includes: a substrate; a plurality of light-emitting elements arranged in each of a plurality of transfer regions on the substrate; and a black matrix having a plurality of transmission holes, each transmission hole corresponding to one of the plurality of light-emitting elements, wherein the plurality of transfer regions include a first transfer region and a second transfer region arranged adjacent to each other based on a virtual boundary line, the black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, and the transmission holes arranged in the first region have a size that becomes smaller as the distance from the virtual boundary line increases.

[0015] According to the present specification, the possibility of stains depending on the side viewing angle can be prevented or minimized by forming the area of ​​the first transmission holes arranged along the virtual boundary line to be larger than the other transmission holes. Therefore, the display device according to the present specification can achieve low-power driving by improving the display quality at the side viewing angle without separately compensating for the brightness difference.

[0016] According to the present specification, the reflection visibility at a side viewing angle can be reduced by reducing the size of the transmission hole away from the virtual boundary line. Therefore, the display quality of the display device according to the present specification can be improved.

[0017] According to the present specification, the degree of freedom in designing a display device can be improved by adjusting the size and pitch of the transmissive holes of the black matrix.

[0018] Various useful advantages and effects of the present disclosure are not limited to the above and will be more easily understood from the description of specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present disclosure will become more apparent to those skilled in the art by describing in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0020] Figure 1 is a diagram showing a display device according to an embodiment of the present specification;

[0021] Figure 2 It is shown Figure 1 An enlarged view of region A;

[0022] Figure 3 is a diagram showing a partial area of ​​a pixel;

[0023] Figure 4 is along Figure 3 A cross-sectional view taken along line II' in FIG.

[0024] Figure 5 is along Figure 3 A cross-sectional view taken along line II-II';

[0025] Figure 6 is along Figure 3 A cross-sectional view taken along line III-III';

[0026] Figure 7 is a cross-sectional view showing an example in which a main light emitting element and a sub-light emitting element are electrically connected to a pixel driving circuit;

[0027] Figure 8 is a diagram showing a display device according to another embodiment of the present specification;

[0028] Fig. 9 is along Figure 8 A cross-sectional view taken along line IV-IV'.

[0029] Fig.10 is a diagram showing a first comparative example regarding a transfer region and an arrangement relationship between a light emitting element provided in the transfer region and a black matrix;

[0030] Fig.11 is a diagram showing a second comparative example regarding a transfer region and an arrangement relationship between a light emitting element provided in the transfer region and a black matrix;

[0031] Fig.12 It is briefly shown Fig.11 A cross-sectional view of the comparative example shown;

[0032] Fig.13 is a diagram showing light emission detected at a side viewing angle in a first comparative example and a second comparative example;

[0033] Fig.14 is a diagram showing an arrangement relationship between a light emitting element and a black matrix in a display device according to a first embodiment;

[0034] Fig.15 is briefly shown along Fig.14 A diagram of a cross section taken along line V-V';

[0035] Fig.16 is a diagram showing a first example of an arrangement relationship between a light emitting element and a black matrix in a display device according to a second embodiment;

[0036] Fig.17 is a diagram showing a second example of the arrangement relationship between the light emitting elements and the black matrix in the display device according to the second embodiment;

[0037] Fig.18 is a diagram showing a black matrix of a display device according to a second embodiment;

[0038] Fig.19 is a diagram showing a first region of a black matrix of a display device according to a second embodiment;

[0039] Fig. 20 is briefly shown along Fig.17 A diagram of a cross section taken along line VI-VI';

[0040] Fig.21 is a diagram showing light emission detected at a side viewing angle in a first example and a second example of a second embodiment;

[0041] Fig. 22 is a diagram showing the luminance of a display device according to a comparative example and the luminance of a display device according to the second embodiment;

[0042] Fig.23 is a diagram showing an arrangement relationship between a light emitting element and a black matrix in a display device according to a third embodiment;

[0043] Fig.24 is a diagram showing a black matrix of a display device according to a third embodiment; and

[0044] Fig.25 is a diagram showing a first region of a black matrix of a display device according to a third embodiment. DETAILED DESCRIPTION

[0045] The advantages and features of the present disclosure and the methods for achieving these advantages and features will be more clearly understood from the embodiments described below with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiments, but can be implemented in various different forms; on the contrary, the present embodiments will make the present disclosure complete and enable those skilled in the art to fully understand the scope of the present disclosure.

[0046] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the accompanying drawings for describing the embodiments of the present disclosure are exemplary, and the present disclosure is not limited to the items shown. The same reference numerals refer to the same elements throughout. In addition, when describing the present disclosure, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present disclosure, its detailed description will be omitted.

[0047] Terms such as "including," "comprising," "having," and "consisting of" used herein are generally intended to allow the addition of other components unless these terms are used with the term "only." References to the singular should be interpreted as including the plural unless explicitly stated otherwise.

[0048] When interpreting the components, even if there is no separate description, it is interpreted as including the error range.

[0049] When describing the positional relationship or interconnection relationship between two components, such as "on top of", "above", "below", "beside", "connected or coupled to", "crossing", "intersecting", etc., unless "immediately" or "directly" is used, one or more other components may be inserted between them.

[0050] When describing a temporal context, such as "after", "subsequently", "next", or "before", it may not be continuous in time scale unless "immediately" or "directly" is used.

[0051] The terms “first”, “second”, etc. may be used to distinguish components from one another, but the function or structure of the components is not limited by the sequence numbers preceding the components or the names of the components.

[0052] The following embodiments can be combined or associated with each other in whole or in part, and various types of interlocking and driving are technically feasible. The embodiments can be implemented independently of each other or implemented together in an interrelated relationship.

[0053] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0054] A display device according to an embodiment of the present specification includes: a display panel having a display area or screen on which an image is displayed; and a pixel driving circuit for driving pixels of the display panel. The display area includes a pixel area in which pixels are arranged. The pixel area includes a plurality of light-emitting areas. A light-emitting element is provided in each of the light-emitting areas. The pixel driving circuit may be embedded in the display panel.

[0055] Figure 1 A diagram showing a display device according to an embodiment of the present specification. Figure 2 It is shown Figure 1 Magnified view of area A. Figure 3 is a diagram showing a partial area of ​​a pixel.

[0056] Reference Figure 1 and Figure 2 , the display device 100 according to the embodiment of the present specification includes a display panel that visually reproduces an input image. The display panel may include a display area AA that displays an image and a non-display area NA that does not display an image. In the non-display area NA, various wirings and driving circuits may be installed, and a pad portion PAD to which an integrated circuit, a printed circuit, etc. are connected may be provided. Here, the display panel may be a panel having a rectangular structure having a width in the X-axis direction, a length in the Y-axis direction, and a thickness in the Z-axis direction. At this time, the width and length of the display panel may be set to various design values ​​according to the application field of the display device. In addition, the X-axis direction may refer to a width direction, a row direction, or a horizontal direction, the Y-axis direction may refer to a length direction, a column direction, or a vertical direction, and the Z-axis direction may refer to a height direction or a thickness direction. In addition, the X-axis direction, the Y-axis direction, and the Z-axis direction may be perpendicular to each other, but they may also refer to different directions that are not perpendicular to each other. Therefore, each of the X-axis direction, the Y-axis direction, and the Z-axis direction may be described as any one of the first direction, the second direction, and the third direction. And, the surface extending in the X-axis direction and the Y-axis direction may refer to a horizontal surface.

[0057] The plurality of light emitting elements 10 disposed in the display area AA and forming the pixel PXL may be micro-sized inorganic light emitting elements. The inorganic light emitting elements may be grown on a silicon wafer and then attached to the display panel through a transfer process.

[0058] The transfer process of the light emitting element 10 can be performed for each pre-divided area. Figure 1The display area AA is divided into four transfer areas ST, but the size or number of the division of the transfer area is not limited thereto. The transfer process can be performed sequentially or simultaneously in the first to ninth transfer areas ST. In each transfer area ST, the blue light emitting element 10, the green light emitting element 10, and the red light emitting element 10 can be sequentially transferred.

[0059] In the non-display area NA, a data driving circuit or a gate driving circuit may be provided, and wiring through which control signals for controlling these driving circuits are supplied may be provided. Here, the control signal includes various timing signals such as a clock signal, an input data enable signal, and a synchronization signal, and it may be received through the pad portion PAD.

[0060] The pixel PXL can be driven by a pixel driving circuit. The pixel driving circuit can drive multiple pixels by receiving a driving voltage, an image signal (digital signal), a synchronization signal synchronized with the image signal, etc. and outputting an anode voltage and a cathode voltage of the light-emitting element 10. The driving voltage can be a high potential voltage (EVDD). The cathode voltage can be a low potential voltage (EVSS) usually applied to the pixel. The anode voltage can be a voltage corresponding to the pixel data value of the image signal. The pixel driving circuit can be arranged in the non-display area NA or below the display area AA.

[0061] Each of the pixels PXL may include a plurality of sub-pixels having different colors. For example, the plurality of pixels may include a red sub-pixel in which a light emitting element 10 emitting red wavelength light is disposed, a green sub-pixel in which a light emitting element 10 emitting green wavelength light is disposed, and a blue sub-pixel in which a light emitting element 10 emitting blue wavelength light is disposed. The plurality of pixels may also include a white pixel.

[0062] Reference Figure 2 and Figure 3, a plurality of pixels PXL may be sequentially arranged in a first direction (X-axis direction) and a second direction (Y-axis direction). In the pixels of the display area AA, a plurality of sub-pixels of the same color may be arranged. For example, each of the plurality of pixels may include a first red sub-pixel in which a first-first light-emitting element 11a emitting light of a red wavelength is provided, a second red sub-pixel in which a first-second light-emitting element 11b emitting light of a red wavelength is provided, a first green sub-pixel in which a second-first light-emitting element 12a emitting light of a green wavelength is provided, a second green sub-pixel in which a second-second light-emitting element 12b emitting light of a green wavelength is provided, a first blue sub-pixel in which a third-first light-emitting element 13a emitting light of a blue wavelength is provided, and a second blue sub-pixel in which a third-second light-emitting element 13b emitting light of a blue wavelength is provided. The first-first light-emitting element 11a, the second-first light-emitting element 12a, and the third-first light-emitting element 13a may be interpreted as a main light-emitting element. The first-second light-emitting element 11b, the second-second light-emitting element 12b, and the third-second light-emitting element 13b may be interpreted as a sub-light-emitting element.

[0063] One sub-pixel includes at least one light emitting element, and if one light emitting element becomes defective, the brightness of the sub-pixel can be adjusted by increasing the brightness of other light emitting elements. However, it is not necessarily limited thereto, and one sub-pixel may include only one light emitting element.

[0064] The plurality of first electrodes 161 are each disposed under the light emitting element 10 and can be selectively connected to the plurality of signal wirings TL1 to TL6 through the extension portion 161a. A high potential voltage can be applied to the pixel driving circuit through the signal wirings TL to TL6. The signal wirings TL to TL6 and the first electrodes 161 can be formed into an integrated electrode pattern during the electrode patterning process.

[0065] Exemplarily, the first signal wiring TL1 may be connected to the anode electrode of the first red sub-pixel, and the second signal wiring TL2 may be connected to the anode electrode of the second red sub-pixel. The third signal wiring TL3 may be connected to the anode electrode of the first green sub-pixel, and the fourth signal wiring TL4 may be connected to the anode electrode of the second green sub-pixel. The fifth signal wiring TL5 may be connected to the anode electrode of the first blue sub-pixel, and the sixth signal wiring TL6 may be connected to the anode electrode of the second blue sub-pixel. If one sub-pixel includes only one light-emitting element, the number of signal wirings TL may be reduced by half.

[0066] The second electrode 170 may be a cathode electrode that is disposed in each row and applies a cathode voltage to the light emitting elements 10 that are continuously arranged in the first direction (X-axis direction). A plurality of second electrodes 170 may be arranged to be spaced apart from each other in the second direction (Y-axis direction). A plurality of second electrodes 170 may be connected to the cathode voltage through the contact electrode 163. Each of the plurality of second electrodes 170 may be electrically connected to the contact electrode 163. However, this is not necessarily limited thereto, and the second electrode 170 may not be divided into a plurality of sheets, but may be composed of one electrode layer to serve as a common electrode.

[0067] Figure 4 is along Figure 3 A cross-sectional view taken along line II' in FIG. Figure 5 is along Figure 3 A cross-sectional view taken along line II-II'. Figure 6 is along Figure 3 A cross-sectional view taken along line III-III'. Figure 7 is a cross-sectional view showing an example in which two light emitting elements are electrically connected to a pixel driving circuit.

[0068] Reference Figures 3 to 5 According to an embodiment, the display device includes a plurality of first electrodes 161 and a contact electrode 163 disposed on a substrate 110, a plurality of light emitting elements 10 disposed on the plurality of first electrodes 161, a first optical layer 141 disposed between the plurality of light emitting elements 10, and a second electrode 170 disposed on the plurality of light emitting elements 10.

[0069] The substrate 110 may be made of a flexible plastic. For example, the substrate 110 may be manufactured as a single-layer or multi-layer substrate of a material selected from, but not limited to, polyimide, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyether sulfone, polyacrylate, polysulfone, and cyclic olefin copolymer. For example, the substrate 110 may be a ceramic substrate or a glass substrate.

[0070] The pixel driving circuit 20 may be provided in the display area AA on the substrate 110. The pixel driving circuit 20 may include a plurality of thin film transistors using an amorphous silicon semiconductor, a polysilicon semiconductor, or an oxide semiconductor.

[0071] The pixel driving circuit 20 may include at least one driving thin film transistor, at least one switching thin film transistor, and at least one storage capacitor. When the pixel driving circuit 20 includes a plurality of thin film transistors, it may be formed on the substrate 110 by a thin film transistor (TFT) manufacturing process. In an embodiment, the pixel driving circuit 20 may be a general term for a plurality of thin film transistors electrically connected to the light emitting element 10.

[0072] The pixel driving circuit 20 may be a driving driver manufactured on a single crystal semiconductor substrate 110 using a metal oxide silicon field effect transistor (MOSFET) manufacturing process. The driving driver may include a plurality of pixel driving circuits for driving a plurality of sub-pixels. When the pixel driving circuit 20 is implemented as a driving driver, after an adhesive layer is provided on the substrate 110, the driving driver may be mounted on the adhesive layer by a transfer process.

[0073] A buffer layer 121 may be disposed on the substrate 110 to cover the pixel driving circuit 20. The buffer layer 121 may be made of an organic insulating material (for example, but not limited to, photosensitive photoacryl or photosensitive polyimide).

[0074] The buffer layer 121 may use an inorganic insulating material such as silicon nitride (SiNx) or silicon oxide (SiO 2 ) stacked in multiple layers, or an organic insulating material and an inorganic insulating material stacked in multiple layers.

[0075] An insulating layer 122 may be provided on the buffer layer 121. The insulating layer 122 may be made of an organic insulating material (for example, but not limited to, photosensitive photopropylene or photosensitive polyimide). Connection wirings RT1 and RT2 may be provided on the buffer layer 121. The connection wirings RT1 and RT2 may be connected to corresponding signal wirings TL1 to TL6. The connection wirings RT1 and RT2 may include a plurality of wiring patterns arranged on different layers with one or more insulating layers interposed therebetween. The wiring patterns arranged on different layers may be electrically connected through contact holes penetrating the insulating layers.

[0076] A plurality of bank patterns 130 may be provided on the insulating layer 122. At least one light emitting element 10 may be provided on each bank pattern 130. For example, a first light emitting element 11 may be provided on the first bank pattern 130a, a second light emitting element 12 may be provided on the second bank pattern 130b, and a third light emitting element 13 may be provided on the third bank pattern 130c.

[0077] The bank pattern 130 may be made of an organic insulating material such as, but not limited to, photosensitive photoacryl or photosensitive polyimide. The bank pattern 130 may guide a position where the light emitting element 10 will be attached during a transfer process of the light emitting element 10. The bank pattern 130 may be omitted.

[0078] A solder pattern 162 may be disposed on the first electrode 161. The solder pattern 162 may be made of indium (In), tin (Sn), or an alloy thereof, but is not limited thereto.

[0079] A plurality of light emitting elements 10 may be mounted on the solder pattern 162, respectively. One pixel may include three colors of light emitting elements 10. The first light emitting element 11 may be a red light emitting element, the second light emitting element 12 may be a green light emitting element, and the third light emitting element 13 may be a blue light emitting element. Two light emitting elements may be mounted in each sub-pixel.

[0080] The first optical layer 141 may cover a plurality of light emitting elements 10 and a dike pattern 130. Therefore, the first optical layer 141 may cover between the plurality of light emitting elements 10 and between the plurality of dike patterns 130. The first optical layer 141 extends in the first direction (X) and is arranged to be spaced apart in the second direction (Y) to separate pixels arranged to be spaced apart in the second direction. Therefore, the first optical layer 141 may be separated between pixel rows. Here, the row may refer to the first direction. Additionally, a pixel row consisting of a plurality of pixels arranged along the first direction may be referred to as a pixel group. Therefore, the display panel may include a plurality of pixel groups arranged to be spaced apart from each other in the second direction. For example, because the first optical layer 141 arranged along the first direction is arranged around the pixel, and the plurality of first optical layers 141 arranged corresponding to the plurality of pixel groups are spaced apart from each other in the second direction, a first optical layer 141 arranged around the pixels forming a row may be separated from another first optical layer 141 arranged around the pixels forming another row.

[0081] The first optical layer 141 may include an organic insulating material in which fine metal particles such as titanium dioxide particles are dispersed. Light emitted from the plurality of light emitting elements 10 may be scattered by the fine metal particles dispersed in the first optical layer 141 and emitted to the outside.

[0082] The second electrode 170 may be disposed on the plurality of light emitting elements 10. The second electrode 170 may be commonly connected to the plurality of pixels PXL. The second electrode 170 may be a thin electrode that transmits light. The second electrode 170 may be a transparent electrode material such as, but not limited to, indium tin oxide (ITO).

[0083] The second electrode 170 may extend in a first direction (X-axis direction) and be spaced apart in a second direction (Y-axis direction). For example, one second electrode 170 may be formed to extend in a first direction, and a plurality of second electrodes 170 extending in the first direction may be arranged to be spaced apart from each other along the second direction. At this time, the second electrode 170 may be arranged to correspond to each of the pixels spaced apart from each other in the second direction. The second electrode 170 may include a first region 171 disposed on the upper surface of the light emitting element 10 and the upper surface of the first optical layer 141, a second region 172 in contact with the contact electrode 163 and electrically connected to the contact electrode 163, and a third region 173 disposed on the side of the first optical layer 141 and connecting the first region 171 and the second region 172.

[0084] In a plan view, the plurality of second electrodes 170 may each overlap the first optical layer 141 , and the third region 173 may cover an outer plane of the first optical layer 141 .

[0085] The second optical layer 142 may be an organic insulating material surrounding the first optical layer 141. The second optical layer 142 may be disposed on the insulating layer 122 together with the first optical layer 141. The first optical layer 141 and the second optical layer 142 may include the same material (eg, siloxane). For example, the first optical layer 141 may be an organic insulating material including titanium oxide (TiO x ) of siloxane, and the second optical layer 142 may be a siloxane that does not contain titanium oxide (TiO x However, it is not necessarily limited thereto, and the first optical layer 141 and the second optical layer 142 may be formed of the same material, or may be formed of different materials.

[0086] According to an embodiment, the second region 172 of the second electrode 170 is connected to the contact electrode 163 in an overall flat state, so excessive stress is not concentrated at the connection point with the contact electrode 163. Therefore, cracks in the second electrode 170 can be effectively prevented.

[0087] The second optical layer 142 may cover the second region 172 and the third region 173 of the second electrode 170. The upper surface of the second optical layer 142 and the upper surface of the first region 171 of the second electrode 170 may be coplanar. That is, the first region 171 and the second optical layer 142 may serve as a planarization layer. Due to this, there is no step on the surface on which the black matrix 190 is formed, so the pattern of the black matrix 190 may be easily formed on the first optical layer 141 and the second optical layer 142. However, it is not necessary to be limited thereto, and the upper surfaces of the second optical layer 142 and the second electrode 170 may have different heights.

[0088] The black matrix 190 may be an organic insulating material to which a black pigment is added. The second electrode 170 may be in contact with the contact electrode 163 below the black matrix 190. A transmission hole 191 may be formed between the patterns of the black matrix 190, through which the light emitted from the light emitting element 10 is output to the outside. The transmission hole 191 may overlap with the light emitting element 10 in the Z-axis direction, and a partial area of ​​the black matrix 190 may overlap with the first optical layer 141 in the Z-axis direction. Here, the Z-axis direction may be referred to as a third direction. Therefore, the black matrix 190 may improve the problem that the light emitted from each of the adjacent light emitting elements 10 is mixed by the first optical layer 141 and then emitted.

[0089] The capping layer 180 may be an organic insulating material covering the black matrix 190 and the second electrode 170. Figure 2 and Figure 3 , the black matrix 190 and the cover layer 180 are omitted.

[0090] The contact electrode 163 may be electrically connected to the first connection wiring RT1 disposed therebelow, and the first connection wiring RT1 may be connected to the pixel driving circuit 20. Therefore, a cathode voltage may be applied to the second electrode 170 through the contact electrode 163. The first electrode 161 may be electrically connected to the second connection wiring RT2. This will be described later.

[0091] Reference Figure 5 , the contact electrode 163 and the signal wirings TL1 to TL6 may be disposed on the same plane. The pixel driving circuit 20 may be disposed below the contact electrode 163 and the signal wirings TL1 to TL6. When the pixel driving circuit 20 is a driving driver, a plurality of driving drivers may be disposed in the display panel.

[0092] The passivation layer 133 may expose the contact electrode 163 so that the contact electrode 163 is electrically connected to the second electrode 170. In addition, the passivation layer 133 may insulate the signal wirings TL2 to TL5 from the second electrode 170. Here, the passivation layer 133 may be formed of an inorganic material.

[0093] Reference Figure 6 The connection portion 161 a of the first electrode 161 may extend to one side 131 of the bank pattern 130 and be electrically connected to the connection wiring RT2 disposed on the buffer layer 121 .

[0094] The first electrode 161, the connection portion 161a, the signal wiring TL, and / or the connection wirings RT1 and RT2 may include a single layer or a multi-layer metal layer selected from titanium (Ti), molybdenum (Mo), and aluminum (Al).

[0095] The passivation layer 133 is disposed on the first electrode 161 and the signal wiring TL, and may have an opening 133a exposing the solder pattern 162. Here, the opening 133a exposing the solder pattern 162 may be referred to as a first opening.

[0096] The light emitting element 10 may include a first conductive semiconductor layer 10-1, an active layer 10-2 disposed on the first conductive semiconductor layer 10-1, and a second conductive semiconductor layer 10-3 disposed on the active layer 10-2. The first driving electrode 15 may be disposed under the first conductive semiconductor layer 10-1, and the second driving electrode 14 may be disposed on the second conductive semiconductor layer 10-3.

[0097] The light emitting element 10 may be formed on a silicon wafer using a method such as metal organic chemical vapor deposition (MOCVD), chemical vapor deposition (CVD), plasma enhanced chemical vapor deposition (PECVD), molecular beam epitaxy (MBE), hydride vapor phase epitaxy (HVPE), or sputtering.

[0098] The first conductive semiconductor layer 10-1 may be implemented with a compound semiconductor such as a group III-V or group II-VI semiconductor and doped with a first dopant. The first conductive semiconductor layer 10-1 may be made of a compound semiconductor having a composition formula of Al x1 In y1 Ga (1-x1-y1) The first conductive semiconductor layer 10-1 may be formed of one or more of a semiconductor material of N (0≤x1≤1, 0≤y1≤1, 0≤x1+y1≤1), InAlGaN, AlGaAs, GaP, GaAs, GaAsP, or AlGaInP, but is not limited thereto. When the first dopant is an n-type dopant such as Si, Ge, Sn, Se, or Te, the first conductive semiconductor layer 10-1 may be an n-type nitride semiconductor layer. However, when the first dopant is a p-type dopant, the first conductive semiconductor layer 10-1 may be a p-type nitride semiconductor layer.

[0099] The active layer 10-2 is a layer where electrons (or holes) injected through the first conductive semiconductor layer 10-1 and holes (or electrons) injected through the second conductive semiconductor layer 10-3 meet. When the electrons and holes are recombined, the active layer 10-2 is converted to a low energy level, thereby generating light with a corresponding wavelength.

[0100] The active layer 10-2 may have any one of a single well structure, a multi-well structure, a single quantum well structure, a multi-quantum well (MQW) structure, a quantum dot structure, or a quantum wire structure, but the structure of the active layer 10-2 is not limited thereto. The active layer 10-2 may generate light in the visible light wavelength range. By way of example, the active layer 10-2 may output light in any one of a blue wavelength band, a green wavelength band, and a red wavelength band.

[0101] The second conductive semiconductor layer 10-3 may be disposed on the active layer 10-2. The second conductive semiconductor layer 10-3 may be implemented with a compound semiconductor such as a group III-V or group II-VI and doped with a second dopant. The second conductive semiconductor layer 10-3 may be composed of a semiconductor having a composition formula of In x2 Al y2 Ga 1-x2-y2 The second conductive semiconductor layer 10-3 may be formed of a semiconductor material selected from the group consisting of AlInN, AlGaAs, GaP, GaAs, GaAsP, and AlGaInP. When the second dopant is a p-type dopant such as Mg, Zn, Ca, Sr, or Ba, the second conductive semiconductor layer 10-3 doped with the second dopant may be a p-type semiconductor layer. When the second dopant is an n-type dopant, the second conductive semiconductor layer 10-3 may be an n-type nitride semiconductor layer.

[0102] Although the embodiment describes the vertical structure in which the driving electrodes 14 and 15 are disposed above and below the light emitting structure, the light emitting element may have a lateral structure or a flip chip structure instead of the vertical structure.

[0103] Reference Figure 7 , the main light emitting element 12a and the sub light emitting element 12b of the sub-pixel may be disposed on the bank pattern 130. The second light emitting element 12 will be described by way of example. The first-first electrode 161-1 connected to the main light emitting element 12a may extend to one side of the bank pattern 130 and be electrically connected to the second-first connection wiring RT21 disposed thereunder. The first-second electrode 161-2 connected to the sub light emitting element 12b may extend to the other side of the bank pattern 130 and be electrically connected to the second-second connection wiring RT22 disposed thereunder.

[0104] The pixel driving circuit 20 can apply an anode voltage to the main light emitting element 12a through the second-first connection wiring RT21, and apply an anode voltage to the sub light emitting element 12b through the second-second connection wiring RT22. The pixel driving circuit 20 can apply a cathode voltage to the main light emitting element 12a and the sub light emitting element 12b through the first connection wiring RT1 and the second electrode 170.

[0105] The pixel driving circuit 20 can adjust the brightness by driving only the main light emitting element 12a or by driving both the main light emitting element 12a and the sub light emitting element 12b. If the main light emitting element 12a becomes dark, the brightness can be adjusted by driving only the sub light emitting element 12b.

[0106] Figure 8 is a diagram showing a display device according to another embodiment of the present specification. Fig. 9 is along Figure 8 A cross-sectional view taken along line IV-IV'.

[0107] Reference Figure 8 and Fig. 9 , the second electrode 170 may be electrically connected to the contact electrode 163 through the contact hole TH1 formed in the second optical layer 142. The second optical layer 142 may have a contact hole TH1 exposing the contact electrode 163. The second electrode 170 inserted into the contact hole TH1 of the second optical layer 142 may contact the upper surface of the contact electrode 163. The contact hole TH1 may be formed in the outer region of the pixel.

[0108] Fig.10 is a diagram showing a first comparative example regarding a transfer region and an arrangement relationship between a light emitting element provided in the transfer region and a black matrix, and Fig.11 1 is a diagram showing a second comparative example regarding a transfer region and an arrangement relationship between a light emitting element provided in the transfer region and a black matrix. Fig.12 It is briefly shown Fig.11 A cross-sectional view of the comparative example shown, and Fig.13 is a diagram showing emission of light detected at a side viewing angle in the first comparative example and the second comparative example.

[0109] Reference Fig.10 and Fig.11 , the display device according to the comparative example may include a plurality of light emitting elements 10 arranged in each transfer region ST, and a black matrix 190a having a plurality of transmission holes 191a corresponding to the light emitting elements 10, respectively. Here, the transmission hole 191a may be formed in a square shape in a plan view, but is not limited thereto. For example, the transmission hole 191a may be formed in various shapes in a plan view, such as a circle or a polygon. In each transfer region ST, a plurality of light emitting elements 10 may be continuously arranged in a first direction (X-axis direction) and a second direction (Y-axis direction).

[0110] Since the transfer process is performed for each pre-divided area, the display device according to the comparative example may include a plurality of transfer areas ST For example, the display device according to the comparative example may include a first transfer area ST1, a second transfer area ST2, a third transfer area ST3, and a fourth transfer area ST4.

[0111] For each of the plurality of transfer regions ST, a virtual boundary may be formed. Thus, two transfer regions ST disposed adjacent to each other may be divided based on the boundary. Fig.10 and Fig.11As shown, a square line representing a transfer region ST may indicate a boundary, and one side of a boundary may be shared with another boundary, but is not necessarily limited thereto. For example, when the boundary is formed as a rectangle and the transfer region is arranged in a T shape, one side of a boundary may be shared by two boundaries.

[0112] A plurality of light emitting elements 10 may be disposed in each of the transfer regions ST, and the light emitting elements 10 may be disposed in one transfer region ST to have a predetermined distance L. For example, the first light emitting element, the second light emitting element, the third light emitting element, and the Nth light emitting element disposed on a horizontal plane of one transfer region ST may have the same spacing distance. Here, the spacing distance between the light emitting elements 10 may be referred to as a light emitting element distance.

[0113] The black matrix 190a may be formed by a single process and may have a plurality of transmissive holes 191a, each of which is formed to correspond to each of the light emitting elements 10 disposed in all the transfer regions ST. At this time, all the transmissive holes 191a may have the same size. For example, the area occupied by each transmissive hole 191a on the horizontal plane of the black matrix 190a may be the same, and the width Wa may also be the same. Additionally, the spacing Da between all the transmissive holes 191a may be the same. Here, the spacing between the transmissive holes 191a may be referred to as a hole spacing.

[0114] In addition, the black matrix 190a may include a plurality of regions corresponding to the transfer regions ST, respectively. For example, the black matrix 190a may include a first region A1 corresponding to the first transfer region ST1, a second region A2 corresponding to the second transfer region ST2, a third region A3 corresponding to the third transfer region ST3, and a fourth region A4 corresponding to the fourth transfer region ST4.

[0115] Since each region of the black matrix 190a corresponds to each transfer region ST, the black matrix 190a may include a virtual boundary line BL for defining each region. For example, the virtual boundary line BL may be provided between the first region A1 and the second region A2, so that the first region A1 and the second region A2 may be placed adjacent to each other based on the virtual boundary line BL. In addition, the other side of the first region A1 may be placed opposite to the third region A3 based on another virtual boundary line BL.

[0116] However, since the transfer process is performed for each transfer region ST, a transfer tolerance may occur between the light emitting elements 10 respectively disposed in two adjacent transfer regions ST. Fig.11 Since the center C1 of the transmissive hole 191 a and the center C2 of the light emitting element 10 are arranged to be spaced apart at a predetermined interval, an offset may be formed between the center C1 of the transmissive hole 191 a and the center C2 of the light emitting element 10 .

[0117] In the comparative example, the distance L between the light emitting elements 10 of each transfer region ST is the same, and the spacing Da and area between all the transmission holes 191a arranged in the black matrix 190a are the same. Therefore, when a transfer tolerance occurs in at least one transfer region ST, the distance between two light emitting elements 10 arranged relative to each other based on the virtual boundary line BL is different from the distance between the light emitting elements 10 arranged in one region. In addition, a portion of one of the two light emitting elements 10 arranged relative to each other based on the virtual boundary line BL may overlap with the black matrix 190a, thereby reducing the luminous efficiency. Therefore, a brightness difference may occur between adjacent regions based on the virtual boundary line BL, and the brightness difference may cause stains near the virtual boundary line BL.

[0118] Reference Fig.12 , the likelihood of such stains occurring may vary depending on the viewing angle of the display device, and the likelihood of seeing stains increases at a side viewing angle of about 60 degrees toward the display device. For example, the brightness difference detected at the front viewing angle may be compensated based on the position, but in the case of the side viewing angle, since the brightness difference may be detected differently depending on the viewing angle, it is difficult to perform compensation according to the viewing angle. Therefore, stains at the side viewing angle may deteriorate the display quality of the display device. Here, Fig.12 The arrangement relationship of the display device is simply shown, which includes a substrate 110, a first electrode 161 arranged on the substrate 110, a light emitting element 10 arranged on the first electrode 161, optical layers 141 and 142 arranged around the light emitting element 10, and a black matrix 190a having a plurality of transmission holes 191a corresponding to the light emitting element 10.

[0119] Reference Fig.13 In the case of the display device in which the transfer tolerance does not occur as in the first comparative example, it can be seen that when the display device is viewed from a side angle, there is almost no brightness difference based on the virtual boundary line BL. However, in the case of the display device in which the transfer tolerance occurs as in the second comparative example, it can be seen that a brightness difference occurs based on the virtual boundary line BL separating the transfer areas arranged adjacent to each other. Therefore, when the display device is viewed from a side angle, the possibility of seeing stains near the virtual boundary line BL increases.

[0120] Referring to the comparative example, due to transfer tolerance according to the transfer process of each transfer area, a brightness difference caused by a viewing angle occurs according to the arrangement position of the light emitting element 10 relative to the virtual boundary line BL and may cause stains near the virtual boundary line BL.

[0121] Therefore, the embodiment of the present specification forms the transmissive hole disposed adjacent to the virtual boundary line BL to be larger in size than the transmissive hole 191a of the comparative example, thereby preventing or minimizing stains that may be visible from a side perspective. Here, among the plurality of transmissive holes according to the embodiment of the present specification, the transmissive hole farthest from the virtual boundary line BL may be formed to have the same size as the transmissive hole 191a of the comparative example.

[0122] Hereinafter, embodiments regarding the size, position, and spacing between transmissive holes arranged in one transfer region ST according to the present specification will be presented to provide a display device optimized for stains.

[0123] Fig.14 is a diagram showing an arrangement relationship between a light emitting element and a black matrix in a display device according to a first embodiment, and Fig.15 is briefly shown along Fig.14 A diagram of a cross section taken along line V-V'. Fig.15 The dotted arrow shown in FIG. 1 may represent light reflected from the first electrode 161, but is not necessarily limited thereto. For example, in addition to the first electrode 161 in contact with the light emitting element 10 overlapping the space S between the side of the transmission hole 191 and one side of the light emitting element 10 relative to the horizontal plane in the third direction as the Z-axis direction, it may be another wiring overlapping the space S in the third direction.

[0124] Reference Fig.10 , Fig.11 , Fig.14 and Fig.15 When the display device according to the comparative example and the display device according to the first embodiment are compared, the size of the transmissive hole 191 of the display device according to the first embodiment is larger than the size of the transmissive hole 191a of the display device according to the comparative example, and the distance D between the transmissive holes 191 of the display device according to the first embodiment is smaller than the distance Da between the transmissive holes 191a of the display device according to the comparative example. That is, the area occupied by the transmissive hole 191 of the display device according to the first embodiment in the black matrix 190 is larger than the area occupied by the transmissive hole 191a of the display device according to the comparative example in the black matrix 190a. At this time, the size of the light emitting element 10 disposed in the transmissive hole 191 of the display device according to the first embodiment may be the same as the size of the light emitting element 10 disposed in the transmissive hole 191a of the comparative example.

[0125] Reference Fig.14 and Fig.15, the display device according to the first embodiment may include a substrate 110, a first electrode 161 disposed on the substrate 110, a light emitting element 10 disposed on the first electrode 161, optical layers 141 and 142 disposed around the light emitting element 10, and a black matrix 190 having a plurality of transmission holes 191 corresponding to the light emitting element 10. In addition, the display device according to the first embodiment may include a plurality of transfer regions ST and regions of the black matrix 190 each disposed to correspond to each of the transfer regions ST.

[0126] The black matrix 190 may include a first region A1 corresponding to the first transfer region ST1 , a second region A2 corresponding to the second transfer region ST2 , a third region A3 corresponding to the third transfer region ST3 , and a fourth region A4 corresponding to the fourth transfer region ST4 .

[0127] In addition, the black matrix 190 may include a virtual boundary line BL for defining each of the areas A1 to A4. Here, a plurality of virtual boundary lines BL provided in the black matrix 190 may be distinguished using serial numbers such as a first virtual boundary line and a second virtual boundary line.

[0128] In addition, the transmissive holes 191 provided in each of the regions A1 to A4 of the black matrix 190 may be arranged to be rotationally symmetrical with respect to an intersection point P where the virtual boundary line BL intersects. In addition, two regions arranged adjacent to each other may be arranged to be axially symmetrical with respect to the virtual boundary line BL. For example, the first region A1 and the second region A2 arranged adjacent to each other may be arranged symmetrically with respect to the virtual boundary line BL.

[0129] The transmissive holes 191 of the display device according to the first embodiment may be arranged to have the same size and pitch, and may have a size larger than the size of the transmissive holes 191a of the display device according to the comparative example, and have a pitch smaller than the pitch Da between the transmissive holes 191a of the display device according to the comparative example. Here, the transmissive holes 191 of the display device according to the first embodiment may be arranged to have the same width W and the same pitch D. In detail, based on the X-axis direction, the width W of the transmissive holes 191 of the display device according to the first embodiment may be 1.12 times the width Wa of the transmissive holes 191a of the display device according to the comparative example, and may be 2.57 to 2.58 times the width of the light emitting element 10. For example, based on the X-axis direction, the width W of the transmissive holes 191 of the display device according to the first embodiment may be 18 μm, the width Wa of the transmissive holes 191a of the display device according to the comparative example may be 16 μm, and the width of the light emitting element 10 may be 7 μm.

[0130] Therefore, even if a transfer tolerance is formed in the light emitting element 10 disposed in one of the transfer regions ST, the transmissive hole 191 of the display device according to the embodiment can prevent or minimize the occurrence of stains at the virtual boundary line BL based on the side viewing angle, and the transmissive hole 191 is formed larger than the transmissive hole 191a of the comparative example.

[0131] Since the transmissive hole 191 of the display device according to the first embodiment is formed larger than the transmissive hole 191a of the display device according to the comparative example, a portion of the first electrode 161 may be exposed through the transmissive hole 191. Therefore, light flowing in through the space S between the side of the transmissive hole 191 and one side of the light emitting element 10 may be reflected by the first electrode 161.

[0132] Since the area of ​​the transmission hole 191 of the display device according to the first embodiment is larger than the area of ​​the transmission hole 191a of the comparative example, the light reflected by the first electrode 161 increases based on the side viewing angle, and this may cause the quality of the display device according to the embodiment to be reduced. For example, the sensitivity of the light reflected by the first electrode 161 may be referred to as reflection visibility, and the display quality at the side viewing angle may be reduced due to the reflection visibility.

[0133] Therefore, the display device according to the second embodiment will be presented below with respect to various design factors such as the size of the transmissive holes 191 depending on the arrangement position and the intervals between the transmissive holes 191 so as to prevent or minimize not only stains but also reflective visibility.

[0134] Fig.16 is a diagram showing a first example of an arrangement relationship between a light emitting element and a black matrix in a display device according to a second embodiment, and Fig.17 2 is a diagram showing a second example of the arrangement relationship between the light emitting elements and the black matrix in the display device according to the second embodiment. Fig.18 is a diagram showing a black matrix of a display device according to a second embodiment, Fig.19 is a diagram showing a first region of a black matrix of a display device according to a second embodiment, and Fig. 20 is briefly shown along Fig.17 A diagram of a cross section taken along line VI-VI'. Fig.21 1 is a diagram showing light emission detected at a side angle in the first example and the second example of the second embodiment. Here, according to the transfer position of the light emitting element 10 of each transfer region, Fig.16 An example of the second embodiment is shown, and Fig.17 Another example of the second embodiment is shown. However, in the second embodiment, the transfer position of the light emitting element 10 is not limited to Fig.16 and Fig.17For example, since the transfer position of the light emitting element 10 may be different for each transfer region, there may be various embodiments of the arrangement relationship between the light emitting element and the black matrix. However, considering the possibility of stains, the display device according to the second embodiment will be described by selecting a normal case where the stain frequency is the lowest and one of the worst cases where the stain probability is the highest.

[0135] Reference Figures 14 to 20 When the display device according to the first embodiment is compared with the display device according to the second embodiment, the transmissive hole 191 of the display device according to the second embodiment, which is disposed at a predetermined distance from the virtual boundary line BL, is smaller than the transmissive hole 191 of the display device according to the first embodiment. For example, the size of the first transmissive hole 191-1 disposed at a first distance L1 from the virtual boundary line BL may be larger than the size of the second transmissive hole 191-2 disposed at a second distance L2. Here, the second distance L2 is larger than the first distance L1.

[0136] In addition, the transmissive holes 191 of the display device according to the first embodiment are formed at regular intervals D, but the transmissive holes 191 of the display device according to the second embodiment are formed at different intervals according to the distance from the virtual boundary line BL. For example, the size of the first transmissive hole 191-1 disposed at the first distance L1 from the virtual boundary line BL may be greater than the size of the second transmissive hole 191-2 disposed at the second distance L2. Here, the second distance L2 is greater than the first distance L1. At this time, the area of ​​the transmissive hole 191-3 of the display device according to the second embodiment, which is farthest from the virtual boundary line BL, may be equal to the area of ​​the transmissive hole 191a of the comparative example. In addition, the size of the light emitting element 10 disposed in the transmissive hole 191 of the display device according to the second embodiment may be equal to the size of the light emitting element 10 disposed in the transmissive hole 191a of the comparative example. In addition, the light emitting element 10 may be arranged to have a predetermined distance L in one transfer region ST.

[0137] Reference Figures 16 to 20 , the display device according to the second embodiment may include a substrate 110, a first electrode 161 disposed on the substrate 110, a light emitting element 10 disposed on the first electrode 161, optical layers 141 and 142 disposed around the light emitting element 10, and a black matrix 190 having a plurality of transmission holes 191 corresponding to the light emitting element 10. In addition, the display device according to the second embodiment may include a plurality of transfer regions ST and regions of the black matrix 190 each disposed to correspond to each of the transfer regions ST.

[0138] The black matrix 190 may include a first region A1 corresponding to the first transfer region ST1 , a second region A2 corresponding to the second transfer region ST2 , a third region A3 corresponding to the third transfer region ST3 , and a fourth region A4 corresponding to the fourth transfer region ST4 .

[0139] In addition, the black matrix 190 may include a virtual boundary line BL for defining each of the areas A1 to A4. Here, a plurality of virtual boundary lines BL provided in the black matrix 190 may be distinguished using serial numbers such as a first virtual boundary line and a second virtual boundary line.

[0140] In addition, the transmissive holes 191 provided in each of the regions A1 to A4 of the black matrix 190 may be arranged to be rotationally symmetrical with respect to an intersection point P where the virtual boundary line BL intersects. In addition, two regions arranged adjacent to each other may be arranged to be axially symmetrical with respect to the virtual boundary line BL. For example, the first region A1 and the second region A2 arranged adjacent to each other may be arranged symmetrically with respect to the virtual boundary line BL.

[0141] The transmissive holes 191 of the display device according to the second embodiment can be arranged to have different sizes and different pitches. At this time, each of the light emitting elements 10 is exposed through each of the plurality of transmissive holes 191, and the light generated by the light emitting element 10 can be irradiated to the outside through each of the plurality of transmissive holes 191.

[0142] Reference Fig.18 and Fig.19 , each of the regions A1 to A4 of the black matrix 190 may have a first transmissive hole 191-1 disposed at a first distance L1 based on the virtual boundary line BL, a second transmissive hole 191-2 disposed at a second distance L2 greater than the first distance L1, and a third transmissive hole 191-3 disposed at a third distance L3 greater than the second distance L2. At this time, the first distance L1 may be, but is not limited to, a distance from the virtual boundary line BL to one side of the first transmissive hole 191-1. For example, the first distance L1 may be a distance from the virtual boundary line BL to the center C1 of the first transmissive hole 191-1. Here, the display device according to the second embodiment includes three types of transmissive holes, but is not necessarily limited thereto.

[0143] Considering the possibility of stains and reflection visibility at a side viewing angle, the size of the first transmission hole 191-1 is larger than that of the second transmission hole 191-2, the size of the third transmission hole 191-3 is smaller than that of the second transmission hole 191-2, and the size of the third transmission hole 191-3 may be equal to that of the transmission hole 191a in the comparative example. Fig.19As shown, the first width W1 of the first transmission hole 191-1 is greater than the second width W2 of the second transmission hole 191-2, the third width W3 of the third transmission hole 191-3 is less than the second width W2 of the second transmission hole 191-2, and the third width W3 of the third transmission hole 191-3 is equal to the width Wa of the transmission hole 191a of the comparative example. For example, the first width W1 of the first transmission hole 191-1 may be 18 μm, the second width W2 of the second transmission hole 191-2 may be 17 μm, the third width W3 of the third transmission hole 191-3 may be 16 μm, and the width of the light emitting element 10 may be 7 μm. Therefore, the first light emitting element disposed to correspond to the first transmission hole 191-1 does not overlap with the black matrix 190 in the Z-axis direction, thereby preventing or minimizing stains detected from a side view. Here, the size of each transmission hole 191 may represent the area on the horizontal plane of the black matrix 190.

[0144] In addition, the transmissive holes 191 of the display device according to the second embodiment may be arranged to have different intervals based on the virtual boundary line BL.

[0145] The interval D0 between the first transmissive hole 191-1 in the first area A1 and the first transmissive hole 191-1 in the second area A2 disposed adjacent to each other may be smaller than the first interval D1 between the first transmissive hole 191-1 and the second transmissive hole 191-2 disposed in the first area A1. Here, the interval D0 between the first transmissive hole 191-1 in the first area A1 and the first transmissive hole 191-1 in the second area A2 may be referred to as a zeroth interval D0. For example, the zeroth interval D0 may be 8 μm, and the first interval D1 may be 8.5 μm.

[0146] In addition, the first interval D1 may be smaller than the second interval D2 between the second and third transmissive holes 191-2 and 191-3 disposed in the first area A1. For example, the second interval D2 may be 9.5 μm.

[0147] In addition, the second interval D2 may be smaller than a third interval D3 between the third transmissive holes 191 - 3 adjacent to each other and disposed in the first area A1. For example, the third interval D3 may be 10 μm.

[0148] That is, considering that the light emitting elements 10 in one transfer region ST are arranged at a predetermined pitch, the area of ​​the transmissive hole 191 changes according to the spacing distance from the virtual boundary line BL, and / or the horizontal area of ​​the transmissive hole 191 is greater than the horizontal area of ​​the light emitting element 10, the zeroth pitch D0 may be smaller than the first pitch D1, the first pitch D1 may be smaller than the second pitch D2, and the second pitch D2 may be smaller than the third pitch D3.

[0149] In addition, each of the regions A1 to A4 of the black matrix 190 may include a first unit region Aa in which the first transmissive hole 191-1 is arranged, a second unit region Ab in which the second transmissive hole 191-2 is arranged, and a third unit region Ac in which the third transmissive hole 191-3 is arranged, according to the distance from the virtual boundary line BL. For example, the first region A1 of the black matrix 190 may include a first unit region A1a in which the first transmissive hole 191-1 is arranged, a second unit region A1b in which the second transmissive hole 191-2 is arranged, and a third unit region A1c in which the third transmissive hole 191-3 is arranged, according to the distance from the virtual boundary line BL. The second region A2 to the fourth region A4 may also include a plurality of unit regions.

[0150] Therefore, the area of ​​the transmissive holes 191 provided in the black matrix 190 becomes smaller as the distance from the virtual boundary line BL increases, and the area may become constant from a certain distance. In addition, the pitch of the transmissive holes 191 provided in the black matrix 190 becomes larger as the distance from the virtual boundary line BL increases, and the pitch may become constant from a certain distance.

[0151] In addition, the first transmission hole 191-1 may be arranged along the virtual boundary line BL, and the second transmission hole 191-2 may be arranged along the first transmission hole 191-1. In addition, the third transmission hole 191-3 may be arranged along the second transmission hole 191-2, but the arrangement is not limited thereto. Fig.19 As shown, the transmissive hole 191 which is a third distance L3 or more away from the virtual boundary line BL may have the same size as the third transmissive hole 191 - 3 .

[0152] Due to a transfer tolerance of the light emitting element 10 transferred for each transfer region ST, a deviation may occur between the center of the transmissive hole 191 and the center of the light emitting element 10 .

[0153] Reference Fig.17 , since the center C1 of the transmissive hole 191 and the center C2 of the light emitting element 10 are arranged to be spaced apart at a certain interval, an offset may be formed between the center C1 of the transmissive hole 191 and the center C2 of the light emitting element 10. Therefore, a distance TD1 from the light emitting element 10 exposed through the first transmissive hole 191-1 of the first area A1 of the first transfer region ST1 to the virtual boundary line BL may be different from a distance TD2 from the light emitting element 10 exposed through the first transmissive hole 191-1 of the second area A2 of the second transfer region ST2 to the virtual boundary line BL. At this time, both the first transmissive hole 191-1 disposed in the first area A1 and the first transmissive hole 191-1 disposed in the second area A2 are transmissive holes 191 disposed adjacent to the virtual boundary line BL.

[0154] Here, the light emitting element 10 exposed through the first transmission hole 191-1 of each transfer region ST may be referred to as a first light emitting element. Similarly, the light emitting element 10 exposed through the second transmission hole 191-2 may be referred to as a second light emitting element, and the light emitting element 10 exposed through the third transmission hole 191-3 may be referred to as a third light emitting element. In addition, when the display device is viewed in the Z-axis direction, the distance from the virtual boundary line BL to the first light emitting element in the first transfer region ST1 may be referred to as a first transfer distance TD1, and the distance from the virtual boundary line BL to the first light emitting element in the second transfer region ST2 may be referred to as a second transfer distance TD2. Therefore, the first transfer distance TD1 and the second transfer distance TD2 may be different. In addition, as the sum of the first transfer distance TD1 and the second transfer distance TD2 increases, the possibility of forming stains in the display device increases. For example, the greater the sum of the first transfer distance TD1 and the second transfer distance TD2 than the distance from the center C1 of the first transmission hole 191-1 disposed in the first region A1 to the center C1 of the first transmission hole 191-1 disposed in the second region A2, the more likely the stain will occur.

[0155] However, the display device according to the second embodiment can prevent or minimize stains detected at a side viewing angle by having the first transmissive hole 191 - 1 have a relatively larger area than the second transmissive hole 191 - 2 .

[0156] Reference Fig.21 When comparing the display device without transfer tolerance as in the first example with the display device with transfer tolerance as in the second example of the second embodiment, it can be seen that there is almost no brightness difference based on the virtual boundary line BL. Therefore, the black matrix 190 provided in the display device according to the second embodiment can significantly reduce the possibility of stains being formed near the virtual boundary line BL.

[0157] Fig. 22 : is a graph showing the luminance of a display device according to a comparative example and the luminance of a display device according to the second embodiment.

[0158] Reference Fig. 22 It can be seen that the brightness of the display device according to the comparative example differs by about 4.3% at a viewing angle of 60 degrees compared with 0 degrees, and the brightness of the display device according to the second embodiment differs by about 2.75% at a viewing angle of 60 degrees compared with 0 degrees. Here, Fig. 22 It is shown based on values ​​calculated by measuring the luminance in the transmissive hole 191 a of the display device according to the comparative example and the luminance in the first transmissive hole 191 - 1 of the display device according to the second embodiment.

[0159] The display device according to the second embodiment can significantly reduce the possibility of occurrence of stains by reducing the brightness difference compared to the comparative example.

[0160] Fig.23 is a diagram showing an arrangement relationship between a light emitting element and a black matrix in a display device according to a third embodiment, Fig.24 is a diagram showing a black matrix of a display device according to a third embodiment, and Fig.25 is a diagram showing a first region of a black matrix of a display device according to a third embodiment.

[0161] Reference Figures 17 to 20 and Figure 23 to Figure 25 When the display device according to the second embodiment is compared with the display device according to the third embodiment, the transmissive holes 191 of the display device according to the third embodiment are different from the transmissive holes 191 of the display device according to the second embodiment in that the farther the transmissive holes 191 are from the virtual boundary line, the smaller the size becomes, and the intervals between the transmissive holes 191 become larger.

[0162] Reference Figure 23 to Figure 25 , the display device according to the third embodiment may include a substrate 110, a first electrode 161 disposed on the substrate 110, a light emitting element 10 disposed on the first electrode 161, optical layers 141 and 142 disposed around the light emitting element 10, and a black matrix 190 having a plurality of transmission holes 191 corresponding to the light emitting element 10. In addition, the display device according to the third embodiment may include a plurality of transfer regions ST and regions of the black matrix 190 each disposed to correspond to each of the transfer regions ST.

[0163] The black matrix 190 may include a first region A1 corresponding to the first transfer region ST1, a second region A2 corresponding to the second transfer region ST2, a third region A3 corresponding to the third transfer region ST3, and a fourth region A4 corresponding to the fourth transfer region ST4. In addition, the black matrix 190 may include a virtual boundary line BL for defining each of the regions A1 to A4.

[0164] Furthermore, the transmissive holes 191 provided in each of the regions A1 to A4 of the black matrix 190 may be arranged rotationally symmetrically with respect to an intersection point P where the virtual boundary line BL intersects. Furthermore, two regions arranged adjacent to each other may be arranged axially symmetrically with respect to the virtual boundary line BL.

[0165] The transmissive holes 191 of the display device according to the third embodiment can be arranged to have different sizes and different pitches. At this time, each of the light emitting elements 10 is exposed through each of the plurality of transmissive holes 191, and the light generated by the light emitting element 10 can be irradiated to the outside through each of the plurality of transmissive holes 191.

[0166] Reference Fig.23 and Fig.25 , each of the regions A1 to A4 of the black matrix 190 may have a first transmissive hole 191-1, a second transmissive hole 191-2, a third transmissive hole 191-3, a fourth transmissive hole 191-4, and an Nth transmissive hole 191-N, which are sequentially arranged according to the distance from the virtual boundary line BL. For example, based on the virtual boundary line BL, the first transmissive hole 191-1 may be disposed at a first distance L1, the second transmissive hole 191-2 may be disposed at a second distance L2 greater than the first distance L1, the third transmissive hole 191-3 may be disposed at a third distance L3 greater than the second distance L2, and the fourth transmissive hole 191-4 may be disposed at a fourth distance L4 greater than the third distance L3.

[0167] Considering the possibility of stains and reflection visibility at a side viewing angle, the size of the first transmission hole 191-1 is larger than the size of the second transmission hole 191-2, the size of the third transmission hole 191-3 is smaller than the size of the second transmission hole 191-2, the size of the fourth transmission hole 191-4 is smaller than the size of the third transmission hole 191-3, and the size of the Nth transmission hole 191-N is equal to the size of the transmission hole 191a in the comparative example. Fig.25 As shown, the first width W1 of the first transmission hole 191-1 is greater than the second width W2 of the second transmission hole 191-2, the third width W3 of the third transmission hole 191-3 is less than the width W2 of the second transmission hole 191-2, the fourth width W4 of the fourth transmission hole 191-4 is less than the width W3 of the third transmission hole 191-3, and the width of the Nth transmission hole 191-N may be equal to the width Wa of the transmission hole 191a in the comparative example. For example, the first width W1 of the first transmission hole 191-1 may be 18 μm, the second width W2 of the second transmission hole 191-2 may be 17.9 μm, the third width W3 of the third transmission hole 191-3 may be 17.8 μm, the fourth width W4 of the fourth transmission hole 191-4 may be 17.7 μm, and the width of the light emitting element 10 may be 7 μm. Therefore, the first light emitting element arranged to correspond to the first transmission hole 191-1 does not overlap with the black matrix 190 in the Z-axis direction, thereby preventing or minimizing stains detected from a side angle. At this time, the N-th light emitting element 10 arranged to correspond to the N-th transmission hole 191-N may overlap with the black matrix 190 in the Z-axis direction. Here, the size of each transmission hole 191 may represent the area on the horizontal plane of the black matrix 190.

[0168] Furthermore, the transmissive holes 191 of the display device according to the third embodiment may be arranged at different intervals based on the virtual boundary line BL. For example, as the transmissive holes 191 of the display device according to the third embodiment become farther from the virtual boundary line BL, the interval between the transmissive holes 191 may increase.

[0169] The interval D0 between the first transmissive hole 191-1 in the first area A1 and the first transmissive hole 191-1 in the second area A2 disposed adjacent to each other may be smaller than the first interval D1 between the first transmissive hole 191-1 and the second transmissive hole 191-2 disposed in the first area A1. Here, the interval D0 between the first transmissive hole 191-1 in the first area A1 and the first transmissive hole 191-1 in the second area A2 may be referred to as a zeroth interval D0. For example, the zeroth interval D0 may be 8 μm, and the first interval D1 may be 8.1 μm.

[0170] In addition, the first interval D1 may be smaller than the second interval D2 between the second transmission hole 191-2 and the third transmission hole 191-3 disposed in the first area A1. For example, the second interval D2 may be 8.2 μm.

[0171] In addition, the second interval D2 may be smaller than a third interval D3 between the third and fourth transmissive holes 191-3 and 191-4 that are adjacent to each other and disposed in the first area A1. For example, the third interval D3 may be 8.3 μm.

[0172] That is, considering that the zeroth interval D0 is smaller than the first interval D1, the first interval D1 is smaller than the second interval D2, and the second interval D2 is smaller than the third interval D3, the interval between the transmissive holes 191 may increase as the distance from the virtual boundary line BL increases. Therefore, in the display device according to the third embodiment, in response to the area of ​​the transmissive holes 191 becoming smaller as the distance from the virtual boundary line BL increases, the interval between the transmissive holes 191 may increase.

[0173] In addition, each of the regions A1 to A4 of the black matrix 190 may include a first unit region Aa where the first transmissive hole 191-1 is arranged, a second unit region Ab where the second transmissive hole 191-2 is arranged, a third unit region Ac where the third transmissive hole 191-3 is arranged, a fourth unit region Ad where the fourth transmissive hole 191-4 is arranged, and an Nth unit region An where the Nth transmissive hole 191-N is arranged, according to the distance from the virtual boundary line BL. For example, the first region A1 of the black matrix 190 may include a first unit region A1a where the first transmissive hole 191-1 is arranged, a second unit region A1b where the second transmissive hole 191-2 is arranged, a third unit region A1c where the third transmissive hole 191-3 is arranged, and a fourth unit region A1d where the fourth transmissive hole 191-4 is arranged, according to the distance from the virtual boundary line BL. The second region A2 to the fourth region A4 may also include a plurality of unit regions.

[0174] In addition, the first transmission hole 191-1 may be arranged along the virtual boundary line BL, and the second transmission hole 191-2 may be arranged along the arrangement of the first transmission hole 191-1. In addition, the third transmission hole 191-3 may be arranged along the arrangement of the second transmission hole 191-2, and the fourth transmission hole 191-4 may be arranged along the arrangement of the third transmission hole 191-3. Considering this arrangement relationship, the Nth transmission hole 191-N may be arranged along the arrangement of the (N-1)th transmission hole 191-N-1.

[0175] Therefore, like the display device according to the second embodiment, the display device according to the third embodiment can significantly reduce the possibility of stains being formed near the virtual boundary line BL, and can also reduce reflection visibility.

[0176] The display device according to the present specification can prevent or minimize the possibility of stains occurring depending on a side viewing angle by forming the area of ​​the first transmissive holes 191 - 1 disposed along the virtual boundary line BL to be larger than areas of other transmissive holes 191 .

[0177] In addition, the display device according to the present specification can reduce the reflection visibility at a side viewing angle by reducing the size of the transmission hole away from the virtual boundary line BL. Therefore, the display device according to the present specification can improve the display quality without separately compensating for the brightness difference, and realize low-power operation of the display device, so that the display device can be improved to meet requirements such as low power consumption and high efficiency.

[0178] In addition, the display device according to the present specification can improve the degree of freedom in designing the display device by adjusting the size and interval of the transmission holes 191 of the black matrix 190 .

[0179] The display device according to the embodiments of this specification can be applied to mobile devices, video phones, smart watches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, bending devices, sliding devices, variable devices, electronic notebooks, electronic books, portable multimedia players (PMP), personal digital assistants (PDA), MP3 players, mobile medical devices, desktop PCs, laptop PCs, netbook computers, workstations, navigation, vehicle display devices, theater display devices, televisions, wallpaper devices, sign devices, gaming devices, laptop computers, monitors, cameras, video cameras, and home appliances. In addition, the display device according to one or more embodiments of this specification can be applied to inorganic light-emitting lighting devices.

[0180] A display device according to one or more embodiments of the present specification may be described as follows.

[0181] A display device according to one or more embodiments of the present specification may include: a substrate; a plurality of light-emitting elements arranged in each of a plurality of transfer regions on the substrate; and a black matrix having a plurality of transmission holes, each transmission hole corresponding to one of the plurality of light-emitting elements, wherein the plurality of transfer regions may include a first transfer region and a second transfer region arranged adjacent to each other, the black matrix may include a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, the first region and the second region may be arranged adjacent to each other based on a virtual boundary line, the first region may include a first transmission hole set at a first distance from the virtual boundary line and a second transmission hole set at a second distance from the virtual boundary line, and a size of the first transmission hole may be larger than a size of the second transmission hole.

[0182] In the display device according to one or more embodiments of the present specification, the second distance may be greater than the first distance.

[0183] In the display device according to one or more embodiments of the present specification, the first region may include a third transmissive hole disposed at a third distance greater than the second distance based on the virtual boundary line, and a size of the third transmissive hole may be smaller than a size of the second transmissive hole.

[0184] In the display device according to one or more embodiments of the present specification, a spacing between the first transmission hole in the first region and the first transmission hole in the second region disposed adjacent to each other is smaller than a first spacing between the first transmission hole and the second transmission hole disposed in the first region.

[0185] In the display device according to one or more embodiments of the present specification, the first interval may be smaller than a second interval between the second transmission hole and the third transmission hole provided in the first region.

[0186] In the display device according to one or more embodiments of the present specification, a spacing between the first transmission hole and the second transmission hole may be different from a spacing between the second transmission hole and the third transmission hole.

[0187] In the display device according to one or more embodiments of the present specification, the center of the light emitting element disposed to correspond to the first transmissive hole may be spaced apart from the center of the first transmissive hole.

[0188] In a display device according to one or more embodiments of the present specification, a distance between a virtual boundary line and a light emitting element disposed adjacent to the virtual boundary line in a first transfer region may be different from a distance between the virtual boundary line and a light emitting element disposed adjacent to the virtual boundary line in a second transfer region.

[0189] In the display device according to one or more embodiments of the present specification, the light emitting element disposed adjacent to the virtual boundary line in the first transfer region may be disposed at a first transfer distance, the light emitting element disposed adjacent to the virtual boundary line in the second transfer region may be disposed at a second transfer distance, and the sum of the first transfer distance and the second transfer distance may be greater than the distance from the center of the first transmission hole in the first region to the center of the first transmission hole in the second region.

[0190] In the display device according to one or more embodiments of the present specification, the transmissive holes arranged in the black matrix may have an area that becomes smaller as the distance from the virtual boundary line increases.

[0191] In the display device according to one or more embodiments of the present specification, the transmissive holes arranged in the black matrix have an area that becomes smaller and then becomes constant as the distance from the virtual boundary line increases.

[0192] In the display device according to one or more embodiments of the present specification, as the distance from the virtual boundary line increases, the interval between the transmissive holes arranged in the black matrix increases.

[0193] In the display device according to one or more embodiments of the present specification, as the distance from the virtual boundary line increases, the interval between the transmissive holes arranged in the black matrix may become larger and then remain constant.

[0194] In the display device according to one or more embodiments of the present specification, a plurality of first transmissive holes may be adjacently arranged along a virtual boundary line.

[0195] In a display device according to one or more embodiments of the present specification, a plurality of light emitting elements disposed in the first transfer region may be arranged to be spaced apart at predetermined intervals along a first direction and a second direction, and a portion of a first electrode electrically connected to the light emitting element may overlap with a space between a side surface of the transmission hole and one side of the light emitting element in a third direction.

[0196] In the display device according to one or more embodiments of the present specification, the plurality of transmissive holes may be arranged to be rotationally symmetrical with respect to an intersection point P where virtual boundary lines intersect.

[0197] In the display device according to one or more embodiments of the present specification, the light emitting element may be an inorganic light emitting diode.

[0198] In the display device according to one or more embodiments of the present specification, a portion of the light emitting element disposed to correspond to the third transmission hole may overlap the black matrix in the third direction.

[0199] The display device according to one or more embodiments of the present specification may further include: an insulating layer arranged on a substrate; a first electrode and a contact electrode arranged on the insulating layer; a second electrode arranged on a light-emitting element; and a passivation layer covering the first electrode, wherein the light-emitting element is arranged on the first electrode.

[0200] The display device according to one or more embodiments of the present specification may further include a plurality of bank patterns disposed between the insulating layer and the first electrode.

[0201] The display device according to one or more embodiments of the present specification may further include: a plurality of connection wirings disposed between the substrate and the insulating layer; and a pixel driving circuit connected to the plurality of connection wirings, wherein the plurality of connection wirings may be electrically connected to the first electrode and the contact electrode.

[0202] In the display device according to one or more embodiments of the present specification, the pixel driving circuit may be a driving driver.

[0203] In the display device according to one or more embodiments of the present specification, the plurality of second electrodes may be arranged to be spaced apart from each other in each pixel row, and each of the plurality of second electrodes may be electrically connected to the contact electrode.

[0204] The display device according to one or more embodiments of the present specification may further include a solder pattern disposed in the first opening to electrically connect the first electrode and the light emitting element.

[0205] A display device according to one or more embodiments of the present specification may include: a substrate; a plurality of light-emitting elements arranged in each of a plurality of transfer regions on the substrate; and a black matrix having a plurality of transmission holes, each transmission hole corresponding to one of the plurality of light-emitting elements, wherein the plurality of transfer regions may include a first transfer region and a second transfer region arranged adjacent to each other based on a virtual boundary line, the black matrix may include a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, and the transmission holes arranged in the first region may have a size that becomes smaller as the distance from the virtual boundary line increases.

[0206] In the display device according to one or more embodiments of the present specification, the area of ​​the transmissive hole may decrease as the distance from the intersection point P to the edge of the region of the black matrix increases.

[0207] In the display device according to one or more embodiments of the present specification, the light emitting elements may be arranged to be rotationally asymmetric, and the transmission holes may be arranged to be rotationally symmetric with respect to the intersection point.

[0208] The above-mentioned objects to be achieved by the present disclosure, means for achieving the objects, and effects of the present disclosure do not define the essential features of the claims, and therefore, the scope of the claims is not limited to the disclosure of the present invention.

[0209] Although the embodiments of the present disclosure have been described in more 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 embodiments disclosed in 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 embodiments are illustrative in all aspects and do not limit the present disclosure.

[0210] [Description of Reference Signs]

[0211] 10: Light-emitting element 20: Pixel driving circuit

[0212] 110: substrate 121: buffer layer

[0213] 122: Insulation layer 130: Bank pattern

[0214] 141: first optical layer 142: second optical layer

[0215] 161: first electrode 163: contact electrode

[0216] 170: second electrode 190: black matrix

[0217] 191: Transmission hole

Claims

1. A display device, comprising: substrate; a plurality of light emitting elements arranged in each of a plurality of transfer regions on the substrate; as well as a black matrix having a plurality of transmission holes, each of which corresponds to one of the plurality of light-emitting elements; The plurality of transfer regions include a first transfer region and a second transfer region arranged adjacent to each other, The black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, The first area and the second area are arranged adjacent to each other based on a virtual boundary line, The first area includes a first transmission hole disposed at a first distance from the virtual boundary line and a second transmission hole disposed at a second distance from the virtual boundary line, and The size of the first transmission hole is greater than that of the second transmission hole.

2. The display device according to claim 1, wherein: The second distance is greater than the first distance.

3. The display device according to claim 2, wherein: The first area includes a third transmission hole disposed at a third distance greater than the second distance based on the virtual boundary line, and The size of the third transmission hole is smaller than that of the second transmission hole.

4. The display device according to claim 3, wherein: A distance between the first transmission holes in the first region and the first transmission holes in the second region that are adjacent to each other is smaller than a first distance between the first transmission holes and the second transmission holes that are disposed in the first region.

5. The display device according to claim 4, wherein: The first interval is smaller than a second interval between the second transmission hole and the third transmission hole disposed in the first region.

6. The display device according to claim 3, wherein: The distance between the first transmission hole and the second transmission hole is different from the distance between the second transmission hole and the third transmission hole.

7. The display device according to claim 1, wherein: The center of the light emitting element disposed to correspond to the first transmission hole is spaced apart from the center of the first transmission hole.

8. The display device according to claim 1, wherein: A distance between the virtual boundary line and a light emitting element disposed adjacent to the virtual boundary line in the first transfer region is different from a distance between the virtual boundary line and a light emitting element disposed adjacent to the virtual boundary line in the second transfer region.

9. The display device according to claim 1, wherein: The light emitting element in the first transfer region disposed adjacent to the virtual boundary line is disposed at a first transfer distance, The light emitting elements in the second transfer region disposed adjacent to the virtual boundary line are disposed at a second transfer distance, and The sum of the first transfer distance and the second transfer distance is greater than a distance from a center of the first transmission hole in the first region to a center of the first transmission hole in the second region.

10. The display device according to claim 1, wherein: The transmissive holes arranged in the black matrix have areas that become smaller as a distance from the virtual boundary line increases.

11. The display device according to claim 1, wherein: The transmissive holes arranged in the black matrix have an area that becomes smaller and then becomes constant as the distance from the virtual boundary line increases.

12. The display device according to claim 1, wherein: As the distance from the virtual boundary line increases, a pitch between the transmissive holes arranged in the black matrix increases.

13. The display device according to claim 1, wherein: As the distance from the virtual boundary line increases, the interval between the transmissive holes arranged in the black matrix becomes larger and then remains constant.

14. The display device according to claim 1, wherein: A plurality of the first transmission holes are adjacently arranged along the virtual boundary line.

15. The display device according to claim 1, wherein: A plurality of light emitting elements disposed in the first transfer region are arranged to be spaced apart at predetermined intervals along a first direction and a second direction, and A portion of the first electrode electrically connected to each of the plurality of light emitting elements overlaps a space between a side of the transmission hole and one side of the connected light emitting element in the third direction.

16. The display device according to claim 1, wherein: The plurality of transmissive holes are arranged to be rotationally symmetrical with respect to an intersection point at which the virtual boundary lines intersect.

17. The display device according to claim 1, wherein: The light emitting element is an inorganic light emitting diode.

18. The display device according to claim 3, wherein: A portion of the light emitting element disposed to correspond to the third transmission hole overlaps the black matrix in the third direction.

19. The display device according to claim 1, further comprising: An insulating layer disposed on the substrate; a plurality of first electrodes and contact electrodes disposed on the insulating layer; a second electrode disposed on the plurality of light emitting elements; as well as a passivation layer covering the plurality of first electrodes, Wherein, the plurality of light emitting elements are arranged on the plurality of first electrodes.

20. The display device according to claim 19, further comprising: a plurality of connection wirings provided between the substrate and the insulating layer, and a pixel driving circuit connected to the plurality of connection wirings, The plurality of connection wirings are electrically connected to the plurality of first electrodes and the contact electrode.

21. A display device, comprising: substrate; a plurality of light emitting elements arranged in each of a plurality of transfer regions on the substrate; as well as a black matrix having a plurality of transmission holes, each of which corresponds to one of the plurality of light-emitting elements; wherein the plurality of transfer regions include a first transfer region and a second transfer region that are arranged adjacent to each other based on a virtual boundary line, The black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, and The transmissive holes arranged in the first region have a size that becomes smaller as a distance from the virtual boundary line increases.

22. A display device, comprising: substrate; a plurality of light emitting elements arranged in each of a plurality of transfer regions on the substrate; as well as a black matrix having a plurality of transmission holes, each of which corresponds to one of the plurality of light-emitting elements; The plurality of transfer regions include a first transfer region and a second transfer region arranged adjacent to each other, The black matrix includes a first region corresponding to the first transfer region and a second region corresponding to the second transfer region, The first area and the second area are arranged adjacent to each other based on a virtual boundary line, The first area includes a first transmission hole disposed at a first distance from the virtual boundary line, a second transmission hole disposed at a second distance from the virtual boundary line, and a third transmission hole disposed at a third distance from the virtual boundary line, and The size of the first transmission hole is larger than that of the second transmission hole, and the size of the second transmission hole is larger than that of the third transmission hole.

23. The display device according to claim 22, wherein: The second distance is greater than the first distance, and the third distance is greater than the second distance.

24. The display device according to claim 23, wherein: The distance between the first transmission hole and the second transmission hole is different from the distance between the second transmission hole and the third transmission hole.

Images