Display device

Abstract

The invention discloses a display device which comprises a plurality of layout units arranged in an array and a plurality of light-emitting elements arranged in the layout units. Each layout unit comprises a plurality of pixel units, a plurality of repair units and a common electrode. Each pixel unit comprises a plurality of sub-pixel units, and each sub-pixel unit comprises a pixel electrode. One of the repairing units is used for repairing any one of the three sub-pixel units, each repairing unit comprises a repairing electrode, and in each layout unit, the number of the repairing electrodes is smaller than that of the pixel electrodes. Each light-emitting element comprises a first connecting pad electrically connected with the pixel electrode or the repair electrode and a second connecting pad electrically connected with the common electrode, and the shortest connecting lines of the first connecting pad and the second connecting pad of each light-emitting element are parallel to each other.

Description

Technical Field

[0001] The invention relates to a display device, and in particular to a display device including a light emitting element and a repair unit. Background Art

[0002] Micro light-emitting diode (micro LED) display device is a type of flat panel display (FPD), which is composed of light-emitting diodes with a size of 1 to 100 microns. Compared with liquid crystal display devices, micro LED display devices have higher contrast and faster response time, and consume less power. With the technological advancement of the optoelectronic industry, the size of optoelectronic components has gradually developed towards miniaturization. Therefore, micro LED display devices have become the mainstream trend in today's display device industry.

[0003] Generally speaking, the yield of micro-LEDs cannot be perfect, and after testing, a small number of sub-pixel bad pixels are still found in the micro-LEDs that are set on the backplane and connected to the electrodes. The existing method to solve the sub-pixel bad pixels is to set a repair unit next to the original sub-pixel unit. This repair unit can only repair a single specific sub-pixel unit. However, the probability of using the repair unit for repair is actually not high, and the layout space of the backplane is limited. The one-to-one setting of the sub-pixel unit and the repair unit will cause a reduction in the display area ratio and a decrease in resolution. Summary of the invention

[0004] The present invention provides a display device, wherein one repair unit in a layout unit can repair any one of three sub-pixel units, thereby reducing the number of repair units and further improving the display area ratio and resolution.

[0005] The display device proposed in at least one embodiment of the present invention comprises a plurality of layout units and a plurality of light-emitting elements. The layout units are arranged in an array, and each layout unit comprises a plurality of pixel units, a plurality of repair units and a common electrode. Each pixel unit comprises a plurality of sub-pixel units, and each sub-pixel unit comprises a pixel electrode. One of the repair units is used to repair any one of the three sub-pixel units, and each repair unit comprises a repair electrode. In each layout unit, the number of repair electrodes is less than the number of pixel electrodes. The light-emitting element is arranged in the layout unit, and each light-emitting element comprises a first pad electrically connected to the pixel electrode or the repair electrode and a second pad electrically connected to the common electrode, and the shortest connection line between the first pad and the second pad of each light-emitting element is parallel to each other.

[0006] In at least one embodiment of the present invention, in each layout unit, the plurality of sub-pixel units and the plurality of repair units are arranged in an array.

[0007] In at least one embodiment of the present invention, each of the pixel units includes a first sub-pixel unit, a second sub-pixel unit and a third sub-pixel unit, and the multiple pixel units include a first pixel unit, a second pixel unit, a third pixel unit and a fourth pixel unit. In two adjacent layout units, the first pixel unit and the second pixel unit of one of the layout units share one of the first sub-pixel units, and the third pixel unit of one of the layout units and the fourth pixel unit of another of the layout units share another first sub-pixel unit.

[0008] In at least one embodiment of the present invention, the plurality of patching units include a first patching unit for patching one of the first sub-pixel unit of the first pixel unit of one of the layout units, the third sub-pixel unit of the first pixel unit, and the third sub-pixel unit of the second pixel unit.

[0009] In at least one embodiment of the present invention, the multiple patching units include a second patching unit, which is used to repair one of the first sub-pixel unit of the third pixel unit of one of the layout units, the third sub-pixel unit of the third pixel unit, and the third sub-pixel unit of the fourth pixel unit of another of the layout units.

[0010] In at least one embodiment of the present invention, the multiple patching units include a third patching unit, which is used to repair one of the second sub-pixel unit of the first pixel unit of one of the layout units, the third sub-pixel unit of the first pixel unit, and the second sub-pixel unit of the second pixel unit of another of the layout units.

[0011] In at least one embodiment of the present invention, the multiple patching units include a fourth patching unit, which is used to repair the third sub-pixel unit of the first pixel unit of one of the layout units, the second sub-pixel unit of the second pixel unit of another of the layout units, and one of the third sub-pixel unit of the second pixel unit.

[0012] In at least one embodiment of the present invention, the multiple patching units include a fifth patching unit for patching one of the second sub-pixel unit of the third pixel unit, the second sub-pixel unit of the fourth pixel unit and the third sub-pixel unit of the fourth pixel unit of one of the layout units.

[0013] In at least one embodiment of the present invention, the plurality of patching units include a sixth patching unit for patching one of the second sub-pixel unit of the third pixel unit of one of the layout units, the third sub-pixel unit of the third pixel unit, and the third sub-pixel unit of the fourth pixel unit.

[0014] In at least one embodiment of the present invention, in each of the layout units, two of the plurality of repair electrodes are arranged adjacent to each other along a first direction, and two of the plurality of repair electrodes partially do not overlap in the first direction.

[0015] In at least one embodiment of the present invention, two of the multiple repair electrodes respectively include extension portions, one of the two extension portions extends along the first direction or along a direction greater than 0 degrees and less than 90 degrees to the first direction, and the other of the two extension portions extends along a direction 180 degrees to the first direction or along a direction greater than 180 degrees and less than 270 degrees to the first direction.

[0016] In at least one embodiment of the present invention, in each of the layout units, two of the plurality of pixel electrodes are arranged adjacent to each other along a first direction, and two of the plurality of pixel electrodes partially do not overlap in the first direction.

[0017] In at least one embodiment of the present invention, one of the two pixel electrodes comprises an extension portion, and the extension portion extends along the first direction or along a direction 180 degrees from the first direction.

[0018] In at least one embodiment of the present invention, one of the two of the multiple pixel electrodes includes an extension portion, which extends in a direction greater than 0 degrees and less than 90 degrees from the first direction or in a direction greater than 180 degrees and less than 270 degrees from the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the layout of a display device according to at least one embodiment of the present invention.

[0020] Figure 2A yes Figure 1 Schematic diagram of the enlarged area A in the middle.

[0021] FIG. 2B to FIG. 2D is an enlarged schematic diagram of a partial area of ​​a display device according to at least another embodiment of the present invention.

[0022] FIG. 3A to FIG. 3D Schematic diagram of a display device repair method according to at least one embodiment of the present invention at different stages.

[0023] Figure 4A and Figure 4B is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention.

[0024] FIG. 5A to FIG. 5D is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention.

[0025] Fig. 6A and Figure 6B is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention.

[0026] 7A to 7C is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention.

[0027] Figure 8 is an enlarged schematic diagram of a partial area of ​​a display device according to at least another embodiment of the present invention.

[0028] Fig. 9 is a partial cross-sectional schematic diagram of a display device according to at least another embodiment of the present invention.

[0029] Fig. 10A and Fig. 10B is an enlarged schematic diagram of a partial area of ​​a display device according to at least another embodiment of the present invention.

[0030] Wherein, the reference numerals are:

[0031] 10: Display device

[0032] 100, 100': Layout unit

[0033] 111, 112, 113, 114: pixel unit

[0034] A: Area

[0035] B1, B2, B2', B3, B4, B4': third sub-pixel unit

[0036] CA: Conductive Adhesive

[0037] CE, CEA: common electrode

[0038] D1: First direction

[0039] ED, ED', EDA, EDA': Light Emitting Element

[0040] EX, EXC, EXD, EXE: Extension

[0041] FE, FEA, FEB, FEC: Repair electrodes

[0042] F1, F1': first repair unit

[0043] F2: Second repair unit

[0044] F3: The third repair unit

[0045] F4: The fourth repair unit

[0046] F5: Fifth Repair Unit

[0047] F6: Sixth Repair Unit

[0048] G1, G2, G2', G3, G4, G4': second sub-pixel unit

[0049] L1, L2: Shortest connection

[0050] PE, PEA, PEB, PEC, PED, PEE: Pixel electrode

[0051] P1, P1A: First pad

[0052] P2, P2A: Second pad

[0053] R1, R1', R2: first sub-pixel unit

[0054] S1: First substrate

[0055] S2: Second substrate DETAILED DESCRIPTION

[0056] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0057] In the following text, in order to clearly present the technical features of the present invention, the dimensions (e.g., length, width, thickness, and depth) of the elements (e.g., layers, films, substrates, and regions, etc.) in the drawings will be enlarged in unequal proportions, and the number of some elements will be reduced. Therefore, the description and explanation of the embodiments below are not limited to the number of elements in the drawings and the dimensions and shapes presented by the elements, but should cover the dimensions, shapes, and deviations thereof caused by the actual process and / or tolerances. For example, the flat surface shown in the drawings may have rough and / or nonlinear features, and the acute angles shown in the drawings may be rounded. Therefore, the elements presented in the drawings of the present invention are mainly for illustration, and are not intended to accurately depict the actual shape of the elements, nor are they intended to limit the scope of the patent application of the present invention.

[0058] Secondly, the words "about", "approximately" or "substantially" used in the present invention not only cover the numerical values ​​and numerical ranges clearly recorded, but also cover the permissible deviation range that can be understood by a person with ordinary knowledge in the technical field to which the invention belongs, wherein the deviation range can be determined by the error generated during measurement, and the error is caused by the limitation of the measurement system or process conditions, for example. For example, two objects (such as the planes or traces of the substrate) are "substantially parallel" or "substantially perpendicular", wherein "substantially parallel" and "substantially perpendicular" respectively represent that the parallelism and perpendicularity between the two objects may include the non-parallelism and non-perpendicularity caused by the permissible deviation range.

[0059] In addition, the spatially relative terms used in the present invention, such as "below", "under", "above", and "on", are for the purpose of facilitating the description of the relative relationship between one element or feature and another element or feature, as shown in the figure. The true meaning of these spatially relative terms includes other orientations. For example, when the figure is flipped up and down 180 degrees, the relationship between one element and another element may change from "below" or "under" to "above" or "on". In addition, the spatially relative descriptions used in the present invention should also be interpreted in the same way.

[0060] It should be understood that, although the present invention may use the terms "first", "second", "third" and the like to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another element, or one signal from another signal. In addition, the term "or" used in the present invention may include any one or more combinations of the associated listed items depending on the actual situation.

[0061] In addition, the present invention may be implemented or applied through other different specific embodiments, and the details of the present invention may also be combined, modified and changed in various embodiments based on different viewpoints and applications without departing from the concept of the present invention.

[0062] Figure 1 is a schematic diagram of the layout of a display device according to at least one embodiment of the present invention. Figure 2A yes Figure 1 Magnified schematic diagram of area A in the figure. Figure 1 and Figure 2A The display device 10 includes a plurality of layout units 100 and a plurality of light emitting elements ED. The layout units 100 are arranged in an array, and each layout unit 100 includes a plurality of pixel units 111, 112, 113, 114, a plurality of repair units F1, F2, F3, F4, F5, F6 and a common electrode CE. It should be understood that although Figure 1 Only six layout units are shown, but the present invention is not limited thereto. In other embodiments, the number of layout units may be increased or decreased according to the size of the display device.

[0063] Each pixel unit includes multiple sub-pixel units, for example, pixel unit 111 includes multiple sub-pixel units R1, G1, and B1, pixel unit 112 includes multiple sub-pixel units R1, G2, and B2, pixel unit 113 includes multiple sub-pixel units R2, G3, and B3, pixel unit 114 includes multiple sub-pixel units R2, G4', and B4', and each sub-pixel unit R1, G1, B1, G2, B2, R2, G3, B3, G4', and B4' includes a pixel electrode PE.

[0064] like Figure 2AAs shown, one of these repair units is used to repair any one of the three sub-pixel units, for example, the repair unit F1 is used to repair any one of the three sub-pixel units R1, B1, and B2, the repair unit F2 is used to repair any one of the three sub-pixel units R2, B3, and B4', the repair unit F3 is used to repair any one of the three sub-pixel units G1, G2', and B1, the repair unit F4 is used to repair any one of the three sub-pixel units G2', B1, and B2', the repair unit F5 is used to repair any one of the three sub-pixel units G3, G4, and B4, and the repair unit F6 is used to repair any one of the three sub-pixel units G3, B3, and B4.

[0065] Each of the repair units F1, F2, F3, F4, F5, and F6 includes a repair electrode FE. In each layout unit 100, the number of the repair electrodes FE is less than the number of the pixel electrodes PE. Figure 2A As shown, in the layout unit 100 , the number of the repair electrodes FE is six, and the number of the pixel electrodes PE is ten, that is, in the layout unit 100 , the ratio of the number of the repair electrodes FE to the number of the pixel electrodes PE is 0.6.

[0066] The light emitting elements ED are disposed in the layout unit 100. Each light emitting element ED includes a first pad P1 electrically connected to the pixel electrode PE or the repair electrode FE and a second pad P2 electrically connected to the common electrode CE. The shortest connection line between the first pad P1 and the second pad P2 of each light emitting element ED is substantially parallel to each other. Figure 2A As shown, the shortest connection lines L1 and L2 between the first pad P1 and the second pad P2 of each light emitting element ED are substantially parallel to the first direction D1 .

[0067] One of the repair units is used to repair any one of the three sub-pixel units, and in each layout unit, the number of repair electrodes is less than the number of pixel electrodes, so the number of repair units and repair electrodes can be reduced, thereby improving the display area ratio and resolution. In addition, since the shortest connection line between the first pad of each light-emitting element electrically connected to the pixel electrode or the repair electrode and the second pad electrically connected to the common electrode is parallel to each other, that is, the light-emitting elements are arranged in an array of regular rows and columns, the difficulty of process and repair can be reduced and it is suitable for mass transfer.

[0068] Please continue reading Figure 1 and Figure 2A In each layout unit 100, a plurality of sub-pixel units R1, G1, B1, R2, G2, B2, G3, B3, G4, B4 and a plurality of repair units F1, F2, F3, F4, F5, F6 are arranged in an array. In some embodiments, the outline of each layout unit 100 is substantially rectangular.

[0069] Each pixel unit 111, 112, 113, 114 includes a first sub-pixel unit R1, R2, a second sub-pixel unit G1, G2, G3, G4' and a third sub-pixel unit B1, B2, B3, B4', and a plurality of pixel units include a first pixel unit 111, a second pixel unit 112, a third pixel unit 113 and a fourth pixel unit 114. In two adjacent layout units 100, 100', the first pixel unit 111 and the second pixel unit 112 of one layout unit 100 share one first sub-pixel unit R1, and the third pixel unit 113 of one layout unit 100 and the fourth pixel unit 114 of another layout unit 100' share another first sub-pixel unit R2. In other words, the first sub-pixel units of the two pixel units share the same light-emitting element, that is, one pixel unit includes 2.5 light-emitting elements. The above-mentioned design can be applied to products where a specific color sub-pixel unit requires a larger current.

[0070] In some embodiments, the first sub-pixel units R1 and R2 may be red, the second sub-pixel units G1, G2, G3, and G4' may be green, and the third sub-pixel units B1, B2, B3, and B4' may be blue, but the present invention is not limited thereto. The light emitting area of ​​the light emitting element ED disposed in the first sub-pixel units R1 and R2 is greater than the light emitting area of ​​the light emitting element ED disposed in the second sub-pixel units G1, G2, G3, and G4' and / or the light emitting area of ​​the light emitting element ED disposed in the third sub-pixel units B1, B2, B3, and B4'.

[0071] The light emitting element ED may be a light emitting diode (LED), for example, a sub-millimeter light emitting diode (mini LED) or a micro light emitting diode (micro LED, μLED). The thickness of a micro light emitting diode is less than 10 microns, for example, 6 microns. Sub-millimeter light emitting diodes can be divided into two types: one containing encapsulation glue and the other not containing encapsulation glue. The thickness of the sub-millimeter light emitting diode containing encapsulation glue may be less than 800 microns, while the thickness of the sub-millimeter light emitting diode without encapsulation glue may be less than 100 microns. In addition, the light emitting element ED may also be a large-sized regular light emitting diode (regular LED) other than sub-millimeter light emitting diodes and micro light emitting diodes, so the light emitting element ED is not limited to smaller sub-millimeter light emitting diodes or micro light emitting diodes.

[0072] like Figure 2AAs shown, the plurality of repair units include a first repair unit F1 for repairing one of the first sub-pixel unit R1 of the first pixel unit 111, the third sub-pixel unit B1 of the first pixel unit 111 and the third sub-pixel unit B2 of the second pixel unit 112 in one of the two adjacent layout units 100 and 100 ′.

[0073] The plurality of repair units include a second repair unit F2 for repairing one of the first sub-pixel unit R2 of the third pixel unit 113 of one of the two adjacent layout units 100 and 100', the third sub-pixel unit B3 of the third pixel unit 113 and the third sub-pixel unit B4' of the fourth pixel unit 114 of the other layout unit 100'.

[0074] The plurality of repair units include a third repair unit F3 for repairing one of the second sub-pixel unit G1 of the first pixel unit 111 of one of the two adjacent layout units 100 and 100', the third sub-pixel unit B1 of the first pixel unit 111 and the second sub-pixel unit G2' of the second pixel unit 112 of the other layout unit 100'.

[0075] The plurality of repair units include a fourth repair unit F4 for repairing one of the third sub-pixel unit B1 of the first pixel unit 111 of one of the two adjacent layout units 100 and 100', the second sub-pixel unit G2' of the second pixel unit 112 of the other layout unit 100', and the third sub-pixel unit B2' of the second pixel unit 112.

[0076] The plurality of repair units include a fifth repair unit F5 for repairing one of the second sub-pixel unit G3 of the third pixel unit 113 , the second sub-pixel unit G4 of the fourth pixel unit 114 and the third sub-pixel unit B4 of the fourth pixel unit 114 in one of the two adjacent layout units 100 and 100 ′.

[0077] The plurality of repair units include a sixth repair unit F6 for repairing one of the second sub-pixel unit G3 of the third pixel unit 113, the third sub-pixel unit B3 of the third pixel unit 113 and the third sub-pixel unit B4 of the fourth pixel unit 114 in one of the two adjacent layout units 100 and 100 ′.

[0078] like Figure 2AAs shown, in each layout unit 100, two of the plurality of repair electrodes FE (e.g., the repair electrodes FE of the repair units F5 and F6) are arranged adjacent to each other along the first direction D1, and two of the plurality of repair electrodes FE (e.g., the repair electrodes FE of the repair units F5 and F6) do not overlap partially in the first direction D1. In addition, in the first direction D1, the non-overlapping portions of the two repair electrodes FE overlap with two pixel electrodes PE (e.g., the pixel electrodes PE of the sub-pixel units G3 and B4), respectively.

[0079] In detail, the pixel electrode PE of the sub-pixel unit G3 adjacent to the repair unit F5 protrudes from the pixel electrode PE of the sub-pixel unit B3 adjacently arranged in the first direction D1, and the aforementioned protruding portion will overlap with the repair electrode FE of the repair unit F6, and the pixel electrode PE of the sub-pixel unit B4 adjacent to the repair unit F6 protrudes from the pixel electrode PE of the sub-pixel unit G4 adjacently arranged in the first direction D1, and the aforementioned protruding portion will overlap with the repair electrode FE of the repair unit F5.

[0080] By designing that two of the plurality of repair electrodes FE do not partially overlap in the first direction D1 , the risk of the repair unit short-circuiting with other sub-pixel units when repairing an oblique sub-pixel unit can be reduced.

[0081] FIG. 2B to FIG. 2D is an enlarged schematic diagram of a partial area of ​​a display device according to at least another embodiment of the present invention. FIG. 2B to FIG. 2D Examples and Figure 2A The structure and relative position of most components of the embodiments are the same, and FIG. 2B to FIG. 2D The layout diagram of the display device is substantially the same as Figure 2A The layout diagram of the display device 10 is shown in FIG. 1 , and therefore the same technical features as those shown in FIG. 1 are not described in detail herein.

[0082] Figure 2B Examples and Figure 2A The difference between the embodiments is that, in each layout unit 100, Figure 2B Two of the plurality of patch electrodes FEA (e.g., the patch electrodes FEA of the patch units F5 and F6) are arranged adjacent to each other along the first direction D1, and two of the plurality of patch electrodes FEA (e.g., the patch electrodes FEA of the patch units F5 and F6) are substantially completely overlapped in the first direction D1, that is, in the first direction D1, the edges of two of the plurality of patch electrodes FEA (e.g., the patch electrodes FEA of the patch units F5 and F6) are substantially aligned with each other. In addition, in each layout unit 100, Figure 2BTwo of the multiple pixel electrodes PEA (for example, the pixel electrodes PEA of the sub-pixel units G4 and B4) are arranged adjacent to each other along the first direction D1, and two of the multiple pixel electrodes PEA (for example, the pixel electrodes PEA of the sub-pixel units G4 and B4) are substantially completely overlapped in the first direction D1, that is, in the first direction D1, edges of two of the multiple pixel electrodes PEA (for example, the pixel electrodes PEA of the sub-pixel units G4 and B4) are substantially aligned with each other.

[0083] Figure 2C Examples and Figure 2A The difference between the embodiments is that two of the plurality of patch electrodes FEB (for example, the patch electrodes FEB of the patch units F5 and F6) respectively include an extension portion EX, one of the two extension portions EX (for example, the extension portion EX of the patch electrode FEB of the patch unit F6) substantially extends along the first direction D1, and the other of the two extension portions EX (for example, the extension portion EX of the patch electrode FEB of the patch unit F5) substantially extends along a direction 180 degrees from the first direction D1. In addition, in the first direction D1, the non-overlapping portions of the two patch electrodes FEB do not overlap with the two pixel electrodes PEB (for example, the pixel electrodes PEB of the sub-pixel units G3 and B4), but the present invention is not limited thereto. In other embodiments, in the first direction D1, the non-overlapping portions of the two patch electrodes FEB may overlap with the two pixel electrodes PEB (for example, the pixel electrodes PEB of the sub-pixel units G3 and B4).

[0084] Figure 2D Examples and Figure 2A The difference between the embodiments is that two of the plurality of patch electrodes FEC (for example, the patch electrodes FEC of the patch units F5 and F6) respectively include an extension portion EXC, one of the two extension portions EXC (for example, the extension portion EXC of the patch electrode FEC of the patch unit F6) substantially extends along a direction greater than 0 degrees and less than 90 degrees with the first direction D1, and the other of the two extension portions EXC (for example, the extension portion EXC of the patch electrode FEC of the patch unit F5) substantially extends along a direction greater than 180 degrees and less than 270 degrees with the first direction D1. In addition, in the first direction D1, the non-overlapping portions of the two patch electrodes FEC do not overlap with the two pixel electrodes PEC (for example, the pixel electrodes PEC of the sub-pixel units G3 and B4), but the present invention is not limited thereto. In other embodiments, in the first direction D1, the non-overlapping portions of the two patch electrodes FEC may overlap with the two pixel electrodes PEC (for example, the pixel electrodes PEC of the sub-pixel units G3 and B4), respectively.

[0085] By virtue of the design that the repair electrode includes the extension portion, the risk of the repair unit short-circuiting with other sub-pixel units when repairing the oblique sub-pixel unit can be further reduced.

[0086] FIG. 3A to FIG. 3D Schematic diagram of a display device repair method in different stages according to at least one embodiment of the present invention. FIG. 3A to FIG. 3D The repair method of the display device 10 comprises the following steps. First, Figure 3A As shown, it is detected whether the light emitting element arranged in each sub-pixel unit is defective. If a defective light emitting element is detected, for example, it is detected that the light emitting element ED of the first sub-pixel unit R1 arranged in the first pixel unit 111 is defective, then Figure 3B As shown, the defective light emitting elements are removed, for example, the light emitting element ED of the first sub-pixel unit R1 disposed in the first pixel unit 111 is removed. Figure 3C As shown, conductive glue CA is disposed between the pixel electrode of the aforementioned sub-pixel unit and the patch electrode of the patch unit, on the patch electrode of the patch unit, and on the common electrode CE. For example, conductive glue CA is disposed between the pixel electrode PE of the first sub-pixel unit R1 of the first pixel unit 111 and the patch electrode FE of the first patch unit F1, conductive glue CA is disposed on the patch electrode FE of the first patch unit F1, and conductive glue CA is disposed on the common electrode CE. Figure 3D As shown, a replacement light-emitting element ED' is arranged on the aforementioned multiple conductive adhesives CA, for example, the first pad P1 of the light-emitting element ED' is electrically connected to the conductive adhesive CA arranged on the repair electrode FE of the first repair unit F1, so that the first pad P1 of the light-emitting element ED' is electrically connected to the repair electrode FE of the first repair unit F1, and the second pad P2 of the light-emitting element ED' is electrically connected to the conductive adhesive CA arranged on the common electrode CE, so that the second pad P2 of the light-emitting element ED' is electrically connected to the common electrode CE.

[0087] Figure 4A and Figure 4B is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention. FIG. 3A to FIG. 3D FIG. 1 shows how the first patching unit F1 patches the first sub-pixel unit R1 of the first pixel unit 111. Figure 4A and Figure 4B It is respectively illustrated how the first patching unit F1 patches the third sub-pixel unit B1 of the first pixel unit 111 and the third sub-pixel unit B2 of the second pixel unit 112 .

[0088] like Figure 4AAs shown, after the light emitting element ED of the third sub-pixel unit B1 disposed in the first pixel unit 111 is detected to be defective, the light emitting element ED (not shown) of the third sub-pixel unit B1 disposed in the first pixel unit 111 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B1 of the first pixel unit 111 and the repair electrode FE of the first repair unit F1, the conductive adhesive CA is disposed on the repair electrode FE of the first repair unit F1, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0089] like Figure 4B As shown, after the light emitting element ED of the third sub-pixel unit B2 disposed in the second pixel unit 112 is detected to be defective, the light emitting element ED (not shown) of the third sub-pixel unit B2 disposed in the second pixel unit 112 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B2 of the second pixel unit 112 and the repair electrode FE of the first repair unit F1, the conductive adhesive CA is disposed on the repair electrode FE of the first repair unit F1, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0090] In addition, if Figure 2A As shown, since the layout positions of the second patch unit F2, the first sub-pixel unit R2 of the third pixel unit 113, the third sub-pixel unit B3 of the third pixel unit 113 and the third sub-pixel unit B4' of the fourth pixel unit 114 are the same as the layout positions of the first patch unit F1, the first sub-pixel unit R1 of the first pixel unit 111, the third sub-pixel unit B2 of the second pixel unit 112 and the third sub-pixel unit B1 of the first pixel unit 111, the repair method of the second patch unit F2 repairing the corresponding sub-pixel unit is the same as the repair method of the first patch unit F1 repairing the corresponding sub-pixel unit, and the same technical features will not be repeated here.

[0091] FIG. 5A to FIG. 5D is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention. Figure 5A and Figure 5B The third patching unit F3 is shown to patch the second sub-pixel unit G1 of the first pixel unit 111 and the second sub-pixel unit G2' of the second pixel unit 112. Figure 5C and Figure 5D It is respectively illustrated how the fourth patching unit F4 patches the third sub-pixel unit B1 of the first pixel unit 111 and the third sub-pixel unit B2 ′ of the second pixel unit 112 .

[0092] like Figure 5AAs shown, after the light emitting element ED of the second sub-pixel unit G1 disposed in the first pixel unit 111 is detected to be defective, the light emitting element ED (not shown) of the second sub-pixel unit G1 disposed in the first pixel unit 111 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the second sub-pixel unit G1 of the first pixel unit 111 and the repair electrode FE of the third repair unit F3, the conductive adhesive CA is disposed on the repair electrode FE of the third repair unit F3, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0093] like Figure 5B As shown, after the light emitting element ED of the second sub-pixel unit G2' disposed in the second pixel unit 112 is detected to be defective, the light emitting element ED (not shown) of the second sub-pixel unit G2' disposed in the second pixel unit 112 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the second sub-pixel unit G2' of the second pixel unit 112 and the repair electrode FE of the third repair unit F3, the conductive adhesive CA is disposed on the repair electrode FE of the third repair unit F3, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0094] like Figure 5C As shown, after the light emitting element ED of the third sub-pixel unit B1 disposed in the first pixel unit 111 is detected to be defective, the light emitting element ED (not shown) of the third sub-pixel unit B1 disposed in the first pixel unit 111 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B1 of the first pixel unit 111 and the repair electrode FE of the fourth repair unit F4, the conductive adhesive CA is disposed on the repair electrode FE of the fourth repair unit F4, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0095] like Figure 5D As shown, after the light emitting element ED of the third sub-pixel unit B2' disposed in the second pixel unit 112 is detected to be defective, the light emitting element ED (not shown) disposed in the third sub-pixel unit B2' disposed in the second pixel unit 112 is removed. Then, a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B2' of the second pixel unit 112 and the repair electrode FE of the fourth repair unit F4, the conductive adhesive CA is disposed on the repair electrode FE of the fourth repair unit F4, the conductive adhesive CA is disposed on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0096] Fig. 6A and Figure 6B is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention. Fig. 6A The third repair unit F3 and the fourth repair unit F4 respectively repair the second sub-pixel unit G1 of the first pixel unit 111 and the second sub-pixel unit G2' of the second pixel unit 112 at the same time. Figure 6B It shows how the third patching unit F3 and the fourth patching unit F4 respectively patch the third sub-pixel unit B1 of the first pixel unit 111 and the third sub-pixel unit B2 ′ of the second pixel unit 112 at the same time.

[0097] like Fig. 6A As shown, after the light emitting element ED of the second sub-pixel unit G1 disposed in the first pixel unit 111 and the light emitting element ED of the second sub-pixel unit G2' disposed in the second pixel unit 112 are detected to be defective, the light emitting element ED of the second sub-pixel unit G1 disposed in the first pixel unit 111 and the light emitting element ED of the second sub-pixel unit G2' disposed in the second pixel unit 112 are removed (not shown). Then, a conductive adhesive CA is disposed between the pixel electrode PE of the second sub-pixel unit G1 of the first pixel unit 111 and the repair electrode FE of the third repair unit F3, on the repair electrode FE of the third repair unit F3 and on the common electrode CE, and a conductive adhesive CA is disposed between the pixel electrode PE of the second sub-pixel unit G2' of the second pixel unit 112 and the repair electrode FE of the fourth repair unit F4, on the repair electrode FE of the fourth repair unit F4 and on the common electrode CE, and then a replacement light emitting element is disposed on the aforementioned conductive adhesive CA (not shown).

[0098] like Figure 6B As shown, after the light emitting element ED of the third sub-pixel unit B1 of the first pixel unit 111 and the light emitting element ED of the third sub-pixel unit B2' of the second pixel unit 112 are detected to be defective, the light emitting element ED of the third sub-pixel unit B1 of the first pixel unit 111 and the light emitting element ED of the third sub-pixel unit B2' of the second pixel unit 112 are removed (not shown). Then, a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B1 of the first pixel unit 111 and the repair electrode FE of the third repair unit F3, on the repair electrode FE of the third repair unit F3 and on the common electrode CE, and a conductive adhesive CA is disposed between the pixel electrode PE of the third sub-pixel unit B2' of the second pixel unit 112 and the repair electrode FE of the fourth repair unit F4, on the repair electrode FE of the fourth repair unit F4 and on the common electrode CE, and then a replacement light emitting element is disposed on the conductive adhesive CA (not shown).

[0099] In addition, since the layout positions of the fifth patch unit F5, the second sub-pixel unit G3 of the third pixel unit 113, the second sub-pixel unit G4 of the fourth pixel unit 114 and the third sub-pixel unit B4 of the fourth pixel unit 114 are the same as the layout positions of the third patch unit F3, the second sub-pixel unit G2' of the second pixel unit 112, the second sub-pixel unit G1 of the first pixel unit 111 and the third sub-pixel unit B1 of the first pixel unit 111, the repair method of the fifth patch unit F5 repairing the corresponding sub-pixel unit is the same as the repair method of the third patch unit F3 repairing the corresponding sub-pixel unit, and the same technical features will not be repeated here.

[0100] Since the layout positions of the sixth patch unit F6, the second sub-pixel unit G3 of the third pixel unit 113, the third sub-pixel unit B3 of the third pixel unit 113 and the third sub-pixel unit B4 of the fourth pixel unit 114 are the same as the layout positions of the fourth patch unit F4, the second sub-pixel unit G2' of the second pixel unit 112, the third sub-pixel unit B2' of the second pixel unit 112 and the third sub-pixel unit B1 of the first pixel unit 111, the repair method of the sixth patch unit F6 repairing the corresponding sub-pixel unit is the same as the repair method of the fourth patch unit F4 repairing the corresponding sub-pixel unit, and the same technical features will not be repeated here.

[0101] 7A to 7C is a schematic diagram of a method for repairing a display device according to at least another embodiment of the present invention. Fig. 7A The diagram shows a method of selecting a repair unit when the light emitting devices ED disposed in the first sub-pixel units R1 and R1 ′ in two adjacent layout units 100 and 100 ′ are both detected as defective and need to be repaired. Figure 7B The diagram shows a method of selecting a repair unit when the light emitting devices ED disposed in the first sub-pixel unit R1 and the light emitting devices ED disposed in the third sub-pixel unit B2 ′ in two adjacent layout units 100 and 100 ′ are both detected as defective and need to be repaired. Figure 7C The diagram shows a method of selecting a repair unit when the light emitting devices ED disposed in the third sub-pixel units B1 and B2 ′ in two adjacent layout units 100 and 100 ′ are both detected as defective and need to be repaired.

[0102] like Fig. 7AAs shown, when the light emitting elements ED disposed in the first sub-pixel unit R1, R1' in two adjacent layout units 100, 100' are all detected as defective, as indicated by the arrows in the figure, the first sub-pixel unit R1 is repaired by the first repair unit F1 in the layout unit 100, and the first sub-pixel unit R1' is repaired by the first repair unit F1' in the layout unit 100'. In this way, if the light emitting elements ED disposed in the second sub-pixel unit G1, G2' and / or the third sub-pixel unit B1, B2' in two adjacent layout units 100, 100' are detected as defective, the third repair unit F3 and / or the fourth repair unit F4 in the layout unit 100 can still be selected for repair.

[0103] like Figure 7B As shown, when the light emitting elements ED disposed in the first sub-pixel unit R1 and the third sub-pixel unit B2' in two adjacent layout units 100 and 100' are both detected as defective, as indicated by the arrows in the figure, the first repair unit F1 in the layout unit 100 is selected to repair the first sub-pixel unit R1, and the first repair unit F1' in the layout unit 100' is selected to repair the third sub-pixel unit B2'. In this way, if the light emitting elements ED disposed in the second sub-pixel unit G1, G2' and / or the third sub-pixel unit B1 in two adjacent layout units 100 and 100' are detected as defective, the third repair unit F3 and / or the fourth repair unit F4 in the layout unit 100 can still be selected to be repaired.

[0104] like Figure 7C As shown, when the light emitting elements ED disposed in the third sub-pixel units B1 and B2' in two adjacent layout units 100 and 100' are both detected as defective, as indicated by the arrows in the figure, the first repair unit F1 in the layout unit 100 is selected to repair the third sub-pixel unit B1, and the first repair unit F1' in the layout unit 100' is selected to repair the third sub-pixel unit B2'. In this way, if the light emitting elements ED disposed in the second sub-pixel units G1 and G2' in two adjacent layout units 100 and 100' are detected as defective, the third repair unit F3 and / or the fourth repair unit F4 in the layout unit 100 can still be selected to perform repairs.

[0105] Figure 8 is an enlarged schematic diagram of a partial area of ​​a display device according to at least another embodiment of the present invention. Fig. 9 is a partial cross-sectional schematic diagram of a display device according to at least another embodiment of the present invention. Figure 8 Examples and Figure 2A The structure and relative position of most components of the embodiment are the same. The main differences between the two embodiments are Figure 8 The light emitting element EDA of the embodiment is a vertical light emitting element, and Figure 2AThe light emitting element ED of the embodiment is a horizontal light emitting element.

[0106] In detail, Figure 8 and Fig. 9 As shown, the pixel electrode PE and the repair electrode FE are arranged on the first substrate S1, the common electrode CEA is arranged on the second substrate S2 opposite to the first substrate S1, and each light-emitting element EDA, EDA' includes a first pad P1A electrically connected to the pixel electrode PE or the repair electrode FE and a second pad P2A electrically connected to the common electrode CEA, and the shortest connecting lines L1, L2 between the first pad P1A and the second pad P2A of each light-emitting element EDA, EDA' are substantially parallel to each other, that is, they are substantially parallel to the normal of the first substrate S1.

[0107] Fig. 10A and Fig. 10B is an enlarged schematic diagram of a portion of a display device according to at least another embodiment of the present invention. Fig. 10A In each layout unit 100, 100', two of the plurality of pixel electrodes (for example, the pixel electrodes PED of the third sub-pixel unit B1, B2' and the second sub-pixel unit G1, G2') are adjacently arranged along the first direction D1, and two of the plurality of pixel electrodes (for example, the pixel electrodes PED of the third sub-pixel unit B1, B2' and the second sub-pixel unit G1, G2') do not partially overlap in the first direction D1.

[0108] Taking the third sub-pixel unit B1 and the second sub-pixel unit G1 as an example, one of two of the plurality of pixel electrodes (e.g., the pixel electrode PED of the third sub-pixel unit B1) includes an extension portion EXD, and the extension portion EXD substantially extends along the first direction D1. Taking the third sub-pixel unit B2' and the second sub-pixel unit G2' as an example, one of two of the plurality of pixel electrodes (e.g., the pixel electrode PED of the second sub-pixel unit G2') includes an extension portion EXD, and the extension portion EXD substantially extends along a direction 180 degrees from the first direction D1.

[0109] See also Fig. 10B , Fig. 10B Examples and Fig. 10A The difference of the embodiment is that, taking the third sub-pixel unit B1 and the second sub-pixel unit G1 as examples, one of two of the plurality of pixel electrodes (e.g., the pixel electrode PEE of the third sub-pixel unit B1) includes an extension portion EXE, and the extension portion EXE substantially extends along a direction that is greater than 0 degrees and less than 90 degrees with the first direction D1. Taking the third sub-pixel unit B2' and the second sub-pixel unit G2' as examples, one of two of the plurality of pixel electrodes (e.g., the pixel electrode PEE of the second sub-pixel unit G2') includes an extension portion EXE, and the extension portion EXE substantially extends along a direction that is greater than 180 degrees and less than 270 degrees with the first direction D1.

[0110] The pixel electrode includes an extension portion, which can further reduce the risk of short circuits between the repair unit and other sub-pixel units when repairing oblique sub-pixel units. In addition, the pixel electrode includes an extension portion, which can shorten the distance between the pixel electrode and the repair electrode, thereby improving the repair efficiency, for example, eliminating the need to dispense glue multiple times between the pixel electrode and the repair electrode.

[0111] In summary, in the display device of at least one embodiment of the present invention, one of the repair units is used to repair any one of the three sub-pixel units, and in each layout unit, the number of repair electrodes is less than the number of pixel electrodes, so the number of repair units and repair electrodes can be reduced, thereby improving the display area ratio and resolution. In addition, since the shortest connection line between the first pad of each light-emitting element electrically connected to the pixel electrode or the repair electrode and the second pad electrically connected to the common electrode is parallel to each other, that is, the light-emitting elements are arranged in an array of regular rows and columns, the difficulty of process and repair can be reduced and it is suitable for mass transfer.

[0112] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. A person having ordinary knowledge in the technical field to which the present invention belongs may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims

1. A display device, characterized in that: include: A plurality of layout units are arranged in an array, and each of the layout units comprises: A plurality of pixel units, each of the pixel units comprising a plurality of sub-pixel units, wherein each of the sub-pixel units comprises a pixel electrode; a plurality of repair units, one of which is used to repair any one of the three sub-pixel units, and each of the repair units comprises a repair electrode, wherein in each of the layout units, the number of the repair electrodes is less than the number of the pixel electrodes; and a common electrode; and A plurality of light-emitting elements are arranged in the plurality of layout units, each of the light-emitting elements comprises a first pad electrically connected to the pixel electrode or the repair electrode and a second pad electrically connected to the common electrode, wherein the shortest connection line between the first pad and the second pad of each light-emitting element is parallel to each other.

2. The display device according to claim 1, wherein: In each of the layout units, the plurality of sub-pixel units and the plurality of repair units are arranged in an array.

3. The display device according to claim 2, wherein: Each of the pixel units includes a first sub-pixel unit, a second sub-pixel unit and a third sub-pixel unit, and the multiple pixel units include a first pixel unit, a second pixel unit, a third pixel unit and a fourth pixel unit. In two adjacent layout units, the first pixel unit and the second pixel unit of one of the layout units share one of the first sub-pixel units, and the third pixel unit of one of the layout units and the fourth pixel unit of another of the layout units share another of the first sub-pixel units.

4. The display device according to claim 3, characterized in that The plurality of repair units include a first repair unit for repairing one of the first sub-pixel unit of the first pixel unit, the third sub-pixel unit of the first pixel unit, and the third sub-pixel unit of the second pixel unit of one of the layout units.

5. The display device according to claim 4, characterized in that The plurality of repair units include a second repair unit for repairing one of the first sub-pixel unit of the third pixel unit of one of the layout units, the third sub-pixel unit of the third pixel unit, and the third sub-pixel unit of the fourth pixel unit of another of the layout units.

6. The display device according to claim 5, characterized in that The plurality of repair units include a third repair unit for repairing one of the second sub-pixel unit of the first pixel unit of one of the layout units, the third sub-pixel unit of the first pixel unit, and the second sub-pixel unit of the second pixel unit of another of the layout units.

7. The display device according to claim 6, wherein: The plurality of repair units include a fourth repair unit for repairing one of the third sub-pixel unit of the first pixel unit of one of the layout units, the second sub-pixel unit of the second pixel unit of another of the layout units, and the third sub-pixel unit of the second pixel unit.

8. The display device according to claim 7, characterized in that The plurality of repair units include a fifth repair unit for repairing one of the second sub-pixel unit of the third pixel unit, the second sub-pixel unit of the fourth pixel unit, and the third sub-pixel unit of the fourth pixel unit of one of the layout units.

9. The display device according to claim 8, wherein: The plurality of repair units include a sixth repair unit for repairing one of the second sub-pixel unit of the third pixel unit, the third sub-pixel unit of the third pixel unit, and the third sub-pixel unit of the fourth pixel unit of one of the layout units.

10. The display device according to claim 1, wherein: In each of the layout units, two of the plurality of patch electrodes are arranged adjacent to each other along a first direction, and two of the plurality of patch electrodes do not partially overlap in the first direction.

11. The display device according to claim 10, wherein: Among the multiple repair electrodes, two of them respectively include an extension portion, one of the two extension portions extends along the first direction or along a direction greater than 0 degrees and less than 90 degrees to the first direction, and the other of the two extension portions extends along a direction 180 degrees to the first direction or along a direction greater than 180 degrees and less than 270 degrees to the first direction.

12. The display device according to claim 1, wherein: In each of the layout units, two of the plurality of pixel electrodes are arranged adjacent to each other along a first direction, and two of the plurality of pixel electrodes do not partially overlap in the first direction.

13. The display device according to claim 12, wherein: Among the plurality of pixel electrodes, one of two of them comprises an extension portion, and the extension portion extends along the first direction or along a direction 180 degrees from the first direction.

14. The display device according to claim 12, wherein: Among the multiple pixel electrodes, one of the two includes an extension portion, and the extension portion extends along a direction greater than 0 degrees and less than 90 degrees with the first direction or extends along a direction greater than 180 degrees and less than 270 degrees with the first direction.

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