Array substrate, repairing method thereof, display panel and display device

Abstract

The embodiment of the present application discloses an array substrate, a repairing method thereof, a display panel and a display device. The array substrate comprises driving circuits arranged in an array and electrodes connected with the driving circuits; the electrodes are used for welding light emitting devices; the electrodes comprise in-situ electrodes and redundant bit electrodes, the redundant bit electrodes are used for welding the light emitting devices when the in-situ electrodes are abnormal; the in-situ electrodes comprise anodes and cathodes, the redundant bit electrodes comprise anodes and cathodes; the anodes of the in-situ electrodes are connected with the anodes of the redundant bit electrodes, and the cathodes of the in-situ electrodes are connected with the cathodes of the redundant bit electrodes; wherein, the cathodes of at least two redundant bit electrodes are shared; or, the anodes of at least two redundant bit electrodes are shared. Accordingly, the efficient repairing of the array substrate is realized, the yield of the array substrate is improved, the occupied area of the array substrate by the redundant bit electrodes is reduced, and higher ppi is facilitated to be realized.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an array substrate and its repair method, as well as a display panel and display device. Background Technology

[0002] Micro LED (Micro Light Emitting Diode) display panels have greater advantages over LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Diode) display panels in terms of brightness, resolution, contrast ratio, energy consumption, lifespan, response speed, and thermal stability.

[0003] Currently, in Micro LED display panels, bonding and other methods can be used to connect the anode and cathode of individual Micro LED chips to the array substrate to form a circuit, thereby enabling the individual Micro LED chips to light up. However, after transferring and bonding the arrayed chips to the thin-film transistor backplane, some chips fail to light up, resulting in a low yield rate for the display panel. Summary of the Invention

[0004] This invention provides an array substrate and its repair method, as well as a display panel and display device, to achieve efficient repair of the array substrate, improve the yield of the array substrate, reduce the area occupied by redundant bit electrodes on the array substrate, and achieve a higher PPI.

[0005] To achieve the above technical objectives, the embodiments of the present invention provide the following technical solutions:

[0006] In a first aspect, embodiments of the present invention provide an array substrate, the array substrate comprising: driving circuits arranged in an array, and electrodes connected to the driving circuits; the electrodes are used for welding light-emitting devices; the electrodes include in-situ electrodes and redundant electrodes, the redundant electrodes being used for welding the light-emitting devices when the in-situ electrodes are faulty; the in-situ electrodes include an anode and a cathode, the redundant electrodes include an anode and a cathode; the anode of the in-situ electrodes is connected to the anode of the redundant electrodes, and the cathode of the in-situ electrodes is connected to the cathode of the redundant electrodes;

[0007] In this configuration, the cathodes of at least two redundant bit electrodes are shared; or, the anodes of at least two redundant bit electrodes are shared.

[0008] Optionally, the array substrate includes multiple pixel regions, each pixel region including at least three in-situ electrodes and at least three redundant bit electrodes; the cathodes or anodes of all the redundant bit electrodes within the pixel region are shared.

[0009] Optionally, the pixel region comprises a first in-place electrode, a second in-place electrode, a third in-place electrode, a first redundant bit electrode, a second redundant bit electrode, and a third redundant bit electrode; and the cathodes of the first, second, and third redundant bit electrodes are shared.

[0010] Preferably, the edge profile of the pixel region is triangular; the anodes of the first, second, and third in-place electrodes serve as the three vertices of the triangle; the anode of the first in-place electrode, the cathode of the first in-place electrode, the anode of the second in-place electrode, and the cathode of the second in-place electrode are located on the first side of the triangle; the anode of the first in-place electrode, the anode of the first redundant bit electrode, the cathode of the third in-place electrode, and the anode of the third in-place electrode are located on the second side of the triangle; the anode of the third in-place electrode, the anode of the third redundant bit electrode, and the anode of the second redundant bit electrode are located on the third side of the triangle; and the cathodes of the shared redundant bit electrodes are located at the center of the triangle.

[0011] Optionally, a row or a column of pixels comprises a plurality of pixel regions arranged in sequence; the profiles of adjacent pixel regions are center-symmetric.

[0012] Preferably, the first, second, and third in-place electrodes correspond to light-emitting devices of different colors.

[0013] Optionally, the pixel region comprises a first in-place electrode, a second in-place electrode, a third in-place electrode, a fourth in-place electrode, a first redundant bit electrode, a second redundant bit electrode, a third redundant bit electrode, and a fourth redundant bit electrode; and the cathodes of the first, second, third, and fourth redundant bit electrodes are shared.

[0014] Preferably, the pixel region comprises three layers of electrodes, with the first layer of electrodes located at the center of the pixel region, and the first layer of electrodes being the cathodes of the redundant bit electrodes.

[0015] The profile of the second layer of electrodes is a first rectangle, with the cathodes of the first, second, third, and fourth in-place electrodes serving as the four vertices of the first rectangle; the anode of the first redundant bit electrode is located between the cathodes of the first and second in-place electrodes, the anode of the second redundant bit electrode is located between the cathodes of the second and third in-place electrodes, the anode of the third redundant bit electrode is located between the cathodes of the third and fourth in-place electrodes, and the anode of the fourth redundant bit electrode is located between the anode of the fourth in-place electrode and the anode of the first in-place electrode.

[0016] The profile shape of the third layer electrode is a second rectangle, and the anode of the first in-situ electrode, the anode of the second in-situ electrode, the anode of the third in-situ electrode and the anode of the fourth in-situ electrode are four vertices of the second rectangle; the size of the second rectangle is greater than the size of the first rectangle;

[0017] Preferably, the second rectangle is rotated clockwise by a preset angle relative to the first rectangle, so that the anode of the first in-situ electrode, the cathode of the first in-situ electrode, the anode of the fourth redundant bit electrode and the cathode of the fourth in-situ electrode are on a straight line.

[0018] Optionally, the row or column of pixels further comprises a plurality of pixel regions arranged in sequence;

[0019] The anode of the first in-situ electrode, the anode of the second in-situ electrode, the anode of the third in-situ electrode and the anode of the fourth in-situ electrode in the pixel region protrude out of the pixel region, and the anodes of the first in-situ electrode, the second in-situ electrode, the third in-situ electrode and / or the fourth in-situ electrode in adjacent pixel regions are nested with each other;

[0020] Preferably, the light emitting device corresponding to the first in-situ electrode and the third in-situ electrode is red, the light emitting device corresponding to the second in-situ electrode is green, and the color of the light emitting device corresponding to the fourth in-situ electrode is blue.

[0021] Optionally, when the cathodes of the at least two redundant bit electrodes are shared, the anode of the redundant bit electrode is located in the current path between the driving circuit and the anode of the in-situ electrode; or, when the anodes of the at least two redundant bit electrodes are shared, the cathode of the redundant bit electrode is located in the current path between the driving circuit and the cathode of the in-situ electrode.

[0022] In a second aspect, the embodiments of the present application further provide a display panel, comprising: the array substrate according to the first aspect and light emitting devices arranged in an array; wherein, when the cathodes of the at least two redundant bit electrodes are shared, the light emitting devices are connected in common cathode; or, when the anodes of the at least two redundant bit electrodes are shared, the light emitting devices are connected in common anode.

[0023] In a third aspect, the embodiments of the present application further provide a display device, comprising: the display panel according to the second aspect.

[0024] In a fourth aspect, the embodiments of the present application further provide a repairing method of an array substrate, the array substrate is provided with driving circuits arranged in an array and electrodes connected with the driving circuits; the electrodes include in-situ electrodes and redundant electrodes, the redundant electrodes are used for welding the light emitting devices when the in-situ electrodes are abnormal; the in-situ electrodes include anodes and cathodes, the redundant electrodes include anodes and cathodes; the anodes of the in-situ electrodes are connected with the anodes of the redundant electrodes, and the cathodes of the in-situ electrodes are connected with the cathodes of the redundant electrodes; wherein the cathodes of at least two redundant electrodes are shared; or the anodes of at least two redundant electrodes are shared; the repairing method of the array substrate comprises: removing the abnormal light emitting devices on the in-situ electrodes; and welding new light emitting devices with the same light emitting color as the light emitting devices on the in-situ electrodes on the corresponding redundant electrodes.

[0025] The embodiments of the present application set the electrodes on the array substrate to include in-situ electrodes and redundant electrodes, and the driving circuits are connected with the in-situ electrodes and the redundant electrodes. When the in-situ electrodes are abnormal, i.e. the driving circuits cannot drive the light emitting devices to emit light through the in-situ electrodes, new light emitting devices can be welded on the corresponding redundant electrodes through the repairing method, so that the new light emitting devices are driven to work normally through the redundant electrodes. The reason for the setting of the embodiments of the present application is that if the light emitting devices are abnormal, the in-situ electrodes are easily damaged in the repairing process, and even if the new light emitting devices are replaced, the light emitting devices still cannot emit light normally; if the in-situ electrodes themselves are abnormal, the repairing cannot be performed any more. Accordingly, the array substrate is efficiently repaired, and the yield of the array substrate is improved. On this basis, the redundant electrodes are shared, the occupied area of the redundant electrodes on the array substrate is reduced, and higher ppi is facilitated to be realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure diagram of an array substrate in the prior art;

[0027] Figure 2 is a structure diagram of an array substrate provided by the embodiments of the present application;

[0028] Figure 3 is Figure 2 is a lighting diagram of the array substrate when the in-situ electrodes are normal;

[0029] Figure 4 is Figure 3 is a structure diagram of the array substrate after the first in-situ electrode repairing;

[0030] Figure 5 is Figure 3 is a structure diagram of the array substrate after the second in-situ electrode repairing;

[0031] Figure 6 yes Figure 3 The diagram shows a structural schematic of an array substrate after repair with a third in-situ electrode.

[0032] Figure 7 This is a schematic diagram of another array substrate structure in the prior art;

[0033] Figure 8 This is a schematic diagram of another array substrate structure provided in an embodiment of the present invention;

[0034] Figure 9 yes Figure 8 The equivalent arrangement of electrodes on the array substrate is shown.

[0035] Figure 10 This is a schematic diagram of another array substrate structure provided in an embodiment of the present invention;

[0036] Figure 11 yes Figure 10 The diagram shows the illumination of the array substrate when there are no abnormalities in the in-situ electrodes of each substrate.

[0037] Figure 12 yes Figure 11 The diagram shows a structural schematic of the array substrate after the first in-situ electrode repair.

[0038] Figure 13 This is a schematic diagram of another array substrate structure provided in an embodiment of the present invention;

[0039] Figure 14 This is a flowchart of a repair method for an array substrate provided in an embodiment of the present invention. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] Figure 1 This is a schematic diagram of an array substrate in the prior art, for reference. Figure 1 The array substrate 10 includes: driving circuits arranged in an array on the array substrate 10. Figure 1The electrode 20 is used for welding the light emitting device; the electrode 20 includes an in-situ electrode 21 and a redundant bit electrode 22, the redundant bit electrode 22 is used for welding the light emitting device when the in-situ electrode 21 is abnormal. Wherein, one driving circuit connects the in-situ electrode 21 and the corresponding redundant bit electrode 22 at the same time, when the in-situ electrode 21 or the redundant bit electrode 22 is welded with the light emitting device, the driving circuit can drive the light emitting device to emit light through the in-situ electrode 21 or the redundant bit electrode 22.

[0042] The setting mode of the driving circuit can refer to any one of the prior art, and the present application is not limited. The light emitting device is, for example, an active light emitting device such as a Micro LED chip with electrode pins. The Micro LED chip can be a red Micro LED chip, a green Micro LED chip, or a blue Micro LED chip, etc. Exemplarily, Figure 1 The electrode setting mode of one pixel area in the array substrate is shown in FIG. 1, one pixel area includes six electrodes 20, i.e. three in-situ electrodes 21 and three redundant bit electrodes 22, wherein the in-situ electrode 211 is used for welding the light emitting device emitting red light, the in-situ electrode 212 is used for welding the light emitting device emitting green light, and the in-situ electrode 213 is used for welding the light emitting device emitting blue light; correspondingly, the redundant bit electrode 221 is used for welding the light emitting device emitting red light when the in-situ electrode 211 is abnormal, the redundant bit electrode 222 is used for welding the light emitting device emitting green light when the in-situ electrode 212 is abnormal, and the redundant bit electrode 223 is used for welding the light emitting device emitting blue light when the in-situ electrode 213 is abnormal.

[0043] In the process of transferring and bonding the arrayed light emitting device to the array substrate 10, the light emitting device is preferentially welded on the in-situ electrode 21. After welding the light emitting device, the display panel including the array substrate 10 is subjected to point screen testing, and abnormal pixel points on the display panel can be found during the point screen testing. When a certain pixel point is abnormal, i.e. the in-situ electrode 21 is abnormal, the light emitting device cannot be driven to emit light, at this time, the light emitting device welded on the in-situ electrode 21 can be removed, and a new light emitting device with the same light emitting color as the removed light emitting device is welded on the corresponding redundant bit electrode 22. In this way, the new light emitting device and the electrode replace the abnormal light emitting device and the electrode, and the repair of the array substrate is realized, and the yield of the array substrate is improved.

[0044] Figure 2 is a structure diagram of an array substrate provided by an embodiment of the present application, Figure 2 The electrode setting mode of one pixel area in the array substrate is shown in FIG. 1, one pixel area includes six electrodes 20, i.e. three in-situ electrodes 21 and three redundant bit electrodes 22, wherein the in-situ electrode 211 is used for welding the light emitting device emitting red light, the in-situ electrode 212 is used for welding the light emitting device emitting green light, and the in-situ electrode 213 is used for welding the light emitting device emitting blue light; correspondingly, the redundant bit electrode 221 is used for welding the light emitting device emitting red light when the in-situ electrode 211 is abnormal, the redundant bit electrode 222 is used for welding the light emitting device emitting green light when the in-situ electrode 212 is abnormal, and the redundant bit electrode 223 is used for welding the light emitting device emitting blue light when the in-situ electrode 213 is abnormal. Figure 2On the basis of the above-mentioned embodiments, each in-situ electrode 21 comprises an anode a and a cathode b, and each redundancy bit electrode 22 comprises an anode a and a cathode b. The anode a of the in-situ electrode 21 is connected with the anode a of the redundancy bit electrode 22, and the cathode b of the in-situ electrode 21 is connected with the cathode b of the redundancy bit electrode 22. The light emitting device is connected in common cathode, and the cathodes b of at least two redundancy bit electrodes 22 are shared. Figure 2 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared.

[0045] In the case where the light emitting device is connected in common cathode, the anodes of the light emitting device are connected with the driving circuit, and the cathodes of the light emitting device are all connected to the same cathode potential. At this time, the cathode potentials of the redundancy bit electrodes 22 are equal, and thus the cathodes b of at least two redundancy bit electrodes 22 can be shared.

[0046] In the case where the light emitting device is connected in common cathode, the anodes of the light emitting device are connected with the driving circuit, and the cathodes of the light emitting device are all connected to the same cathode potential. At this time, the cathode potentials of the redundancy bit electrodes 22 are equal, and thus the cathodes b of at least two redundancy bit electrodes 22 can be shared. Figure 2 In the case where the light emitting device is connected in common cathode, the anodes of the light emitting device are connected with the driving circuit, and the cathodes of the light emitting device are all connected to the same cathode potential. At this time, the cathode potentials of the redundancy bit electrodes 22 are equal, and thus the cathodes b of at least two redundancy bit electrodes 22 can be shared. Figure 1 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 1 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 2 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared.

[0047] In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 2 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 3 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 2 In the case shown in FIG. 6, the cathodes b of the three redundancy bit electrodes 22 in one pixel region are all shared. Figure 3When each in-situ electrode 21 is normal, the first light emitting device 41 is welded to the first in-situ electrode 211, the second light emitting device 42 is welded to the second in-situ electrode 212, and the third light emitting device 43 is welded to the third in-situ electrode 213. Figure 3 The middle star indicates that the electrode at the corresponding position lights up the corresponding light emitting device, wherein the first driving circuit drives the first light emitting device 41 to emit light, for example, red light, through the first in-situ electrode 211, the second driving circuit drives the second light emitting device 42 to emit light, for example, green light, through the second in-situ electrode 212, and the third driving circuit drives the third light emitting device 43 to emit light, for example, blue light, through the third in-situ electrode 213.

[0048] If the first light emitting device 41 is not lit up during the point screen test, this may be due to a defect of the first light emitting device 41 itself or a short circuit between the anode a and the cathode b of the in-situ electrode 211 caused during the welding of the first light emitting device 41. The present application collectively refers to these phenomena that cause the first light emitting device 41 not to be lit up as the first in-situ electrode 211 abnormality. When these situations occur, even if a new light emitting device is re-welded on the first in-situ electrode 211, the possibility that the light emitting device cannot be lit up is still high. Therefore, during the repair process, it is preferred to remove the light emitting device on the first in-situ electrode 211 first, and then re-weld a new first light emitting device 41 on the first redundant bit electrode 221, so as to avoid the interference of the poor light emission of the light emitting device on the first in-situ electrode 211 on the pixel display of the display panel including the array substrate.

[0049] Figure 4 is Figure 3 A structure schematic diagram after the first in-situ electrode repair of the array substrate shown in Figure 3 and Figure 4 Alternatively, a new first light emitting device 41 is welded on the first redundant bit electrode 221. The first driving circuit can drive the new first light emitting device 41 through the first redundant bit electrode 221, realize the repair of the array substrate, and be conducive to the normal driving and lighting of the corresponding first light emitting device 41 of the first driving circuit, thereby improving the yield of the array substrate. Moreover, the cathodes b of the first redundant bit electrode 221, the second redundant bit electrode 222 and the third redundant bit electrode 223 are shared, which overall makes the first redundant bit electrode 221, the second redundant bit electrode 222 and the third redundant bit electrode 223 occupy less area of the pixel area, and is conducive to the realization of higher ppi of the display panel including the array substrate.

[0050] Continuing to refer to Figure 4On the basis of the above-mentioned embodiments, after the first light emitting device 41 welded on the first in-situ electrode 211 is removed, the connection between the first in-situ electrode 211 and the first redundant bit electrode 221 can be cut off, so as to avoid the interference of the first in-situ electrode 211 on the driving signal outputted by the first driving circuit to the first redundant bit electrode 221, thereby improving the stability of the new first light emitting device 41.

[0051] Continuing to refer to Figure 3 , if the second light emitting device 42 is not lighted up in the point screen test process, the second light emitting device 42 needs to be repaired at this time. Figure 5 Figure 3 is a structural schematic view of an array substrate after the second in-situ electrode repair. In combination with Figure 3 and Figure 5 , optionally, the new second light emitting device 42 is welded on the second redundant bit electrode 222, and the second driving circuit can drive the new second light emitting device 42 through the second redundant bit electrode 222, thereby realizing the repair of the array substrate and being beneficial to the normal driving and lighting of the second light emitting device 42 corresponding to the second driving circuit, and improving the yield of the array substrate.

[0052] Continuing to refer to Figure 3 , if the third light emitting device 43 is not lighted up in the point screen test process, the third light emitting device 43 needs to be repaired at this time. Figure 6 Figure 3 is a structural schematic view of an array substrate after the third in-situ electrode repair. In combination with Figure 3 and Figure 6 , optionally, the new third light emitting device 43 is welded on the third redundant bit electrode 223, and the third driving circuit can drive the new third light emitting device 43 through the third redundant bit electrode 223, thereby realizing the repair of the array substrate and being beneficial to the normal driving and lighting of the third light emitting device 43 corresponding to the third driving circuit, and improving the yield of the array substrate.

[0053] It should be noted that in the above-mentioned embodiments, the common cathode connection of the light emitting device is described, which is not a limitation of the present application. In other embodiments, the light emitting device can also be set as a common anode connection, and the anodes a of at least two redundant bit electrodes 22 are shared. Among them, the common anode connection of the light emitting device refers to that the cathodes of the light emitting device are connected to the driving circuit, and the anodes of the light emitting device are connected to the same anode electrode at this time, and the anode potentials of each redundant bit electrode 22 are equal. The setting mode of the anode a shared by the redundant bit electrode 22 is similar to that of the cathode b shared by the redundant bit electrode 22, which will not be described here.

[0054] Figure 7 is a structural schematic view of another array substrate in the prior art, referring to​​Figure 7 On the basis of the above-mentioned embodiments, optionally, the array substrate 10 comprises a plurality of pixel regions 30, and each pixel region 30 comprises at least three in-situ electrodes 21 and at least three redundant electrodes 22. For example, the pixel region 30 comprises three light emitting devices, the first light emitting device corresponds to the first in-situ electrode 211 and the first redundant electrode 221, the second light emitting device corresponds to the second in-situ electrode 212 and the second redundant electrode 222, and the third light emitting device corresponds to the third in-situ electrode 213 and the third redundant electrode 223. Optionally, the first light emitting device is a red light emitting device, the second light emitting device is a green light emitting device, and the third light emitting device is a blue light emitting device. In other embodiments, the pixel region can further comprise a fourth in-situ electrode and a fourth redundant electrode, the fourth in-situ electrode corresponds to a fourth light emitting device, and the fourth light emitting device can be a white light emitting device.

[0055] It should be noted that the electrodes in the array substrate and the light emitting devices in the display panel are one-to-one corresponding, and thus the pixel region can refer to the partition of the light emitting devices in the display panel or the partition of the electrodes in the array substrate. Therefore, in the drawings provided by the embodiments of the present application, in order to facilitate explanation, some drawings show the partition of the light emitting devices, and some drawings show the partition of the electrodes. Continue to refer to Figure 7 Optionally, the pixel arrangement of the display panel comprising the array substrate is RGB arrangement, and each in-situ electrode 21 is arranged in a row, and each redundant electrode 22 is arranged in a row. In this way, the repair of the in-situ electrode 21 can be realized, but the redundant electrode 22 occupies a larger space.

[0056] To this end, on the basis of the above-mentioned embodiments, optionally, the cathodes b of all the redundant electrodes 22 in the pixel region 30 are shared, so as to reduce the area occupied by the redundant electrodes 22. The technical solution of the shared cathodes b of the redundant electrodes 22 provided by the embodiments of the present application can be applied to various pixel arrangements, and several of them will be described below, but not as a limitation to the present application.

[0057] Figure 8 is another structure diagram of an array substrate provided by the embodiments of the present application. Refer to Figure 8In an embodiment of the present application, the edge profile of the pixel region 30 is a triangle. The anode a of the first in-situ electrode 211, the anode a of the second in-situ electrode 212 and the anode a of the third in-situ electrode 213 are the three vertices of the triangle; the anode a of the first in-situ electrode 211, the cathode b of the first in-situ electrode 211, the anode a of the second in-situ electrode 212 and the cathode b of the second in-situ electrode 212 are on the first side of the triangle; the anode a of the first in-situ electrode 211, the anode a of the first redundancy electrode 221, the cathode b of the third in-situ electrode 213 and the anode a of the third in-situ electrode 213 are on the second side of the triangle; the anode a of the third in-situ electrode 213, the anode a of the third redundancy electrode 223 and the anode a of the second redundancy electrode 222 are on the third side of the triangle; and the cathode b of the common redundancy electrode 22 is in the center of the triangle. In this way, the arrangement of the in-situ electrodes 21 and the redundancy electrodes 22 is compact, and the delta arrangement of the pixels is achieved, which further improves the display quality of the display panel and the realization of high ppi.

[0058] Continuing to refer to Figure 8 On the basis of the above embodiments, the pixel region 30 of the display panel including the array substrate adopts a delta arrangement, and one row or one column of pixels (i.e., one row or one column of pixel repeating units) includes a plurality of pixel regions 30 arranged in sequence; and the profiles of adjacent pixel regions 30 are centrally symmetric. That is, from left to right, the first pixel region 31 is an inverted triangle, the second pixel region 32 is a regular triangle, the third pixel region 33 is an inverted triangle, the fourth pixel region 34 is a regular triangle, and so on.

[0059] Figure 9 is Figure 8 the equivalent arrangement of the electrodes of the array substrate. Referring to Figure 9 , the first in-situ electrode 211 and the first redundancy electrode 221 are equivalent to the first equivalent electrode 201, and the first driving circuit drives the first equivalent electrode 201 to drive the first light-emitting device welded to the first equivalent electrode 201 to emit light, for example, red light. The second in-situ electrode 212 and the second redundancy electrode 222 are equivalent to the second equivalent electrode 202, and the second driving circuit drives the second equivalent electrode 202 to drive the second light-emitting device welded to the second equivalent electrode 202 to emit light, for example, green light. The third in-situ electrode 213 and the third redundancy electrode 223 are equivalent to the third equivalent electrode 203, and the third driving circuit drives the third equivalent electrode 203 to drive the third light-emitting device welded to the third equivalent electrode 203 to emit light, for example, blue light.

[0060] In the row direction, the first equivalent electrode 201, the second equivalent electrode 202, and the third equivalent electrode 203 are arranged in an RGB pattern. Furthermore, within a triangle formed by pixel regions 30, the first equivalent electrode 201, the second equivalent electrode 202, and the third equivalent electrode 203 are included. Additionally, at the boundaries of two adjacent pixel regions 30, a triangular outline including the first equivalent electrode 201, the second equivalent electrode 202, and the third equivalent electrode 203 can also be formed. This arrangement allows the light emitted by the light-emitting devices corresponding to each equivalent electrode to share light, resulting in a compact pixel arrangement and better display performance.

[0061] Figure 10 This is a schematic diagram of another array substrate provided in an embodiment of the present invention. (Reference) Figure 10 In one embodiment of the present invention, optionally, the pixel region 30 includes: a first in-situ electrode 214, a second in-situ electrode 215, a third in-situ electrode 216, a fourth in-situ electrode 217, a first redundant bit electrode 224, a second redundant bit electrode 225, a third redundant bit electrode 226, and a fourth redundant bit electrode 227; and the cathodes b of the first redundant bit electrode 224, the second redundant bit electrode 225, the third redundant bit electrode 226, and the fourth redundant bit electrode 227 are shared.

[0062] exist Figure 10 Within the pixel area 30 shown, four light-emitting devices can be arranged. Optionally, the light-emitting devices corresponding to the first in-situ electrode 214 and the third in-situ electrode 216 are red, the light-emitting device corresponding to the second in-situ electrode 215 is green, and the light-emitting device corresponding to the fourth in-situ electrode 217 is blue, thus forming an RGRB pixel arrangement. For the RGRB pixel arrangement, by sharing the cathodes b of the redundant bit electrodes 22, the number of anodes a and eight cathodes b in the redundant bit electrodes 22 can be reduced to eight anodes a and five cathodes b, reducing the area occupied by the redundant bit electrodes 22 on the array substrate display area.

[0063] The following is based on Figure 10 Taking the array substrate shown as an example, the repair process of the array substrate will be explained. Figure 11 yes Figure 10 The diagram shows the illumination state when all in-situ electrodes of the array substrate are functioning normally. (See also...) Figure 11When each in-situ electrode 21 is normal, the first light emitting device 44 is welded to the first in-situ electrode 214, the second light emitting device 45 is welded to the second in-situ electrode 215, the third light emitting device 46 is welded to the third in-situ electrode 216, and the fourth light emitting device 47 is welded to the fourth in-situ electrode 217. The first driving circuit drives the first light emitting device 44 to emit light, for example, red light, through the first in-situ electrode 214, the second driving circuit drives the second light emitting device 45 to emit light, for example, green light, through the second in-situ electrode 215, the third driving circuit drives the third light emitting device 46 to emit light, for example, red light, through the third in-situ electrode 216, and the fourth driving circuit drives the fourth light emitting device 47 to emit light, for example, blue light, through the fourth in-situ electrode 217.

[0064] If the first light emitting device 44 is not lit during the point screen test, the first light emitting device 42 needs to be repaired at this time. Figure 12 is Figure 11 Fig. 2 shows a structure schematic diagram of the array substrate after repairing the first in-situ electrode. In combination with Figure 11 and Figure 12 Alternatively, a new first light emitting device 41 is welded on the first redundant bit electrode 224, and the first driving circuit can drive the new first light emitting device 41 through the first redundant bit electrode 224, thereby realizing the repair of the array substrate and facilitating the normal driving and lighting of the first light emitting device 41 corresponding to the first driving circuit, and improving the yield of the array substrate.

[0065] In addition, the cathodes b of the first redundant bit electrode 224, the second redundant bit electrode 225, the third redundant bit electrode 226, and the third redundant bit electrode 227 are shared, so that the redundant bit electrode 22 occupies less area of the display area of the array substrate, thereby ensuring the realization of a higher ppi of the display panel.

[0066] Similarly, when the second light emitting device 45 is not lit, a new second light emitting device 42 can be welded on the second redundant bit electrode 225, and the second driving circuit can drive the new second light emitting device 42 through the second redundant bit electrode 225, thereby realizing the repair of the array substrate. When the third light emitting device 46 is not lit, a new third light emitting device 46 can be welded on the third redundant bit electrode 226, or when the fourth light emitting device 47 is not lit, a new fourth light emitting device 46 can be welded on the fourth redundant bit electrode 227, thereby realizing the repair of the array substrate.

[0067] Continuing to refer to Figure 10Optionally, the pixel region 30 comprises three layers of electrodes, the first layer of electrodes is located in the center of the pixel region 30, and the first layer of electrodes is the cathode b of the redundant bit electrode 22; the second layer of electrodes has a first rectangular shape 50, and the cathode b of the first in-place electrode 214, the cathode b of the second in-place electrode 215, the cathode b of the third in-place electrode 216 and the cathode b of the fourth in-place electrode 217 are four vertices of the first rectangular shape 50; the anode a of the first redundant bit electrode 224 is located between the cathode b of the first in-place electrode 214 and the cathode b of the second in-place electrode 215, the anode a of the second redundant bit electrode 225 is located between the cathode a of the second in-place electrode 215 and the cathode b of the third in-place electrode 216, the anode a of the third redundant bit electrode 226 is located between the cathode b of the third in-place electrode 216 and the cathode b of the fourth in-place electrode 217, and the anode a of the fourth redundant bit electrode 227 is located between the anode a of the fourth in-place electrode 217 and the anode b of the first in-place electrode 214; the third layer of electrodes has a second rectangular shape 60, and the anode a of the first in-place electrode 214, the anode a of the second in-place electrode 215, the anode a of the third in-place electrode 216 and the anode a of the fourth in-place electrode 217 are four vertices of the second rectangular shape 60; the size of the second rectangular shape 60 is larger than the size of the first rectangular shape 50, wherein the size of the second rectangular shape 60 can refer to the area of the second rectangular shape 60, and the size of the first rectangular shape 50 can refer to the area of the second rectangular shape 50. In this way, not only is the pixel arrangement mode of RGRB realized, but also the cathodes b of all the redundant bit electrodes 22 in the pixel region 30 are shared, and the redundant bit electrodes 22 and the corresponding in-place electrodes 21 are arranged nearby, the first layer of electrodes, the second layer of electrodes and the third layer of electrodes are sequentially distributed, and the area of the array substrate is reasonably utilized.

[0068] Continuing to refer to Figure 10 Optionally, the second rectangular shape 60 is rotated clockwise by a preset angle relative to the first rectangular shape 50, so that the anode a of the first in-place electrode 214, the cathode b of the first in-place electrode 214, the anode a of the fourth redundant bit electrode 227 and the cathode b of the fourth in-place electrode 217 are on a straight line. The preset angle can be an acute angle less than 60°, which can be set as needed. In this way, the size or distribution direction of each electrode 20 can be adjusted according to the size of the first rectangular shape 50 and the second rectangular shape 60, and the distribution direction of each electrode 20 can be adjusted according to the rotation angle of the first rectangular shape 50 or the second rectangular shape 60, so that the arrangement of each electrode 20 can be adjusted according to the actual pixel arrangement needs.

[0069] Figure 13 is another structure diagram of an array substrate provided by the embodiment of the present application. Referring to Figure 13In an embodiment of the present application, the anode a of the first in-situ electrode 214, the anode b of the second in-situ electrode 215, the anode a of the third in-situ electrode 216 and the anode a of the fourth in-situ electrode 217 in the pixel region 30 are optionally protruded out of the pixel region 30, and the anode a of the first in-situ electrode 214, the anode a of the second in-situ electrode 215, the anode a of the third in-situ electrode 216 and / or the anode a of the fourth in-situ electrode 217 in the adjacent pixel region 30 are nested with each other.

[0070] The arrangement of the plurality of pixel regions 30 is shown in FIG. 1, so that the pixel arrangement mode of RGRB is formed in the row direction, and the cathode b of all the redundant bit electrodes 22 is shared in each pixel region 30; further, the mutual nesting between the pixel regions 30 makes that the RGRB pixel can be obtained with any shared cathode b as the center, the pixel arrangement is compact, the area of the display panel is reasonably utilized, and the light emitting area of the sub-pixel R in the RGRB pixel arrangement mode is larger, so that the display panel has better display effect. Figure 13 It should be noted that the row pixel defined by the view angle shown in

[0071] and Figure 8 is the column pixel after rotating 90°, and the row and column are relative concepts, and the embodiment of the present application is described by taking the row as an example, which is also applicable in the column direction. Figure 13 The embodiment of the present application further provides a display panel, which comprises the array substrate of any of the above technical solutions and the light emitting devices arranged in an array, wherein the cathodes of the at least two redundant bit electrodes are shared, and the light emitting devices are connected in common cathode; or the anodes of the at least two redundant bit electrodes are shared, and the light emitting devices are connected in common anode. The display panel provided by the embodiment of the present application and the array substrate described in the above technical solutions belong to the same inventive concept and can achieve the same technical effect, and the repeated content will not be described here.

[0072] The embodiment of the present application further provides a display device, which comprises the display panel described in any of the above technical solutions. The display device provided by the embodiment of the present application and the display panel described in the above technical solutions belong to the same inventive concept and can achieve the same technical effect, and the repeated content will not be described here. The display device can be a mobile phone, a tablet computer, a computer, a television, a smart wearable device, etc.

[0073] The embodiment of the present application further provides a repairing method of an array substrate,

[0074] which is a flow chart of the repairing method of the array substrate. Referring to FIG. 2, the repairing method of the array substrate comprises the following steps. Figure 14 Figure 14

[0075] ​​S10, removing the abnormal light emitting device on the in-situ electrode.

[0076] Specifically, refer to Figures 3 to 6 The abnormal light emitting device on the in-situ electrode 21 is removed, that is, the light emitting device on the in-situ electrode 21 which cannot be driven by the driving circuit is removed, and the connection line between the in-situ electrode 21 from which the light emitting device is removed and the corresponding redundant bit electrode 22 is cut off, so as to avoid the driving signal outputted by the driving circuit to the corresponding redundant bit electrode 22 from being interfered by the in-situ electrode 21.

[0077] S11, welding a new light emitting device with the same light emitting color as the light emitting device on the in-situ electrode on the corresponding redundant bit electrode.

[0078] Specifically, refer to Figures 3 to 6 The new light emitting device with the same light emitting color as the light emitting device on the in-situ electrode 21 is welded on the corresponding redundant bit electrode 22, so as to ensure that the light emitting device driven by the driving circuit through the corresponding redundant bit electrode 22 of the in-situ electrode 21 from which the light emitting device is removed can completely compensate the abnormal light emitting device, thereby ensuring the better repairing effect of the array substrate.

[0079] The repairing method of the array substrate provided by the embodiment of the present application and the array substrate described in the above technical solution both belong to the same inventive concept, can realize the same technical effect, and the repeated content will not be described here.

[0080] Note that the above are only the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the inventive concept, and the scope of the present application is determined by the appended claims.

Claims

1. An array substrate, characterized by, The electrode comprises an in-situ electrode and a redundant electrode, the redundant electrode is used for welding the light emitting device when the in-situ electrode is abnormal; The in-situ electrode comprises an anode and a cathode, and the redundant electrode comprises an anode and a cathode; the anode of the in-situ electrode is connected with the anode of the redundant electrode, and the cathode of the in-situ electrode is connected with the cathode of the redundant electrode; wherein, the cathodes of at least two redundant electrodes are shared; or, the anodes of at least two redundant electrodes are shared; The array substrate comprises a plurality of pixel regions, and each pixel region comprises at least three in-situ electrodes and at least three redundant electrodes; The cathodes or anodes of all the redundant electrodes in the pixel region are shared; The pixel region comprises a first in-situ electrode, a second in-situ electrode, a third in-situ electrode, a first redundant electrode, a second redundant electrode and a third redundant electrode; the cathodes of the first redundant electrode, the second redundant electrode and the third redundant electrode are shared; and the colors of the light emitting devices corresponding to the first in-situ electrode, the second in-situ electrode and the third in-situ electrode are different; The edge profile of the pixel region is a triangle; the anodes of the first in-situ electrode, the second in-situ electrode and the third in-situ electrode serve as three vertices of the triangle; the anode of the first in-situ electrode, the cathode of the first in-situ electrode, the anode of the second in-situ electrode and the cathode of the second in-situ electrode are located on a first side of the triangle; the anode of the first in-situ electrode, the anode of the first redundant electrode, the cathode of the third in-situ electrode and the anode of the third in-situ electrode are located on a second side of the triangle; the anode of the third in-situ electrode, the anode of the third redundant electrode and the anode of the second redundant electrode are located on a third side of the triangle; and the cathodes of the shared redundant electrodes are located at the center of the triangle. One row or one column of pixels comprises a plurality of pixel regions arranged in sequence; The profiles of adjacent pixel regions are center-symmetric.

2. The array substrate of claim 1, wherein, When the cathodes of at least two redundant electrodes are shared, the anodes of the redundant electrodes are located in the current path between the driving circuit and the anode of the in-situ electrode; Or, when the anodes of at least two redundant electrodes are shared, the cathodes of the redundant electrodes are located in the current path between the driving circuit and the cathode of the in-situ electrode.

3. The array substrate of claim 1, wherein, The electrode comprises an in-situ electrode and a redundant electrode, the redundant electrode is used for welding the light emitting device when the in-situ electrode is abnormal; The in-situ electrode comprises an anode and a cathode, and the redundant electrode comprises an anode and a cathode; the anode of the in-situ electrode is connected with the anode of the redundant electrode, and the cathode of the in-situ electrode is connected with the cathode of the redundant electrode; wherein, the cathodes of at least two redundant electrodes are shared; or, the anodes of at least two redundant electrodes are shared; 4. An array substrate, characterized by, ​ ​ ​ ​ The array substrate comprises a plurality of pixel regions, each of the pixel regions comprising at least three in situ electrodes and at least three redundant electrodes; The cathodes or the anodes of all the redundant electrodes in the pixel region are shared; The pixel region comprises a first in situ electrode, a second in situ electrode, a third in situ electrode, a fourth in situ electrode, a first redundant electrode, a second redundant electrode, a third redundant electrode and a fourth redundant electrode; and the cathodes of the first, second, third and fourth redundant electrodes are shared; The first and third in situ electrodes correspond to red light emitting devices, the second in situ electrode corresponds to a green light emitting device, and the fourth in situ electrode corresponds to a blue light emitting device; The pixel region comprises three layers of electrodes, the first layer of electrodes is located at the center of the pixel region, and the first layer of electrodes is the cathode of the redundant electrode; The outline shape of the second layer of electrodes is a first rectangle, the cathodes of the first, second, third and fourth in situ electrodes are the four vertices of the first rectangle; the anode of the first redundant electrode is located between the cathodes of the first and second in situ electrodes, the anode of the second redundant electrode is located between the cathodes of the second and third in situ electrodes, the anode of the third redundant electrode is located between the cathodes of the third and fourth in situ electrodes, and the anode of the fourth redundant electrode is located between the anodes of the fourth in situ electrode and the first in situ electrode; The outline shape of the third layer of electrodes is a second rectangle, the anodes of the first, second, third and fourth in situ electrodes are the four vertices of the second rectangle; the size of the second rectangle is greater than the size of the first rectangle.

5. The array substrate of claim 4, wherein, The second rectangle is rotated clockwise by a preset angle with respect to the first rectangle, so that the anode of the first in situ electrode, the cathode of the first in situ electrode, the anode of the fourth redundant electrode and the cathode of the fourth in situ electrode are on a straight line.

6. The array substrate of claim 5, wherein, Further comprising: One row or one column of pixels comprises a plurality of pixel regions arranged in sequence; The anodes of the first, second, third and fourth in situ electrodes in the pixel region protrude out of the pixel region, and the anodes of the first, second, third and fourth in situ electrodes in adjacent pixel regions are nested with each other.

7. The array substrate of claim 4, wherein, When the cathodes of at least two redundant electrodes are shared, the anodes of the redundant electrodes are located in the current path between the driving circuit and the anodes of the in situ electrodes; Alternatively, when the anodes of at least two redundant electrodes are shared, the cathodes of the redundant electrodes are located in the current path between the driving circuit and the cathodes of the in situ electrodes.

8. A display panel, characterized by, Comprising: The array substrate and light emitting device in array arrangement according to any one of claims 1-7; When the cathodes of the at least two redundant bit electrodes are shared, the light emitting device is a common cathode connection. Or, when the anodes of the at least two redundant bit electrodes are shared, the light emitting device is a common anode connection.

9. A display device, characterized by comprising: Comprise: The display panel according to claim 8.

10. A repairing method of an array substrate, which is applied to the array substrate according to any one of claims 1 to 7, wherein The array substrate is provided with driving circuits in array arrangement and electrodes connected with the driving circuits; the electrodes comprise in-place electrodes and redundant bit electrodes, the redundant bit electrodes are used for welding the light emitting device when the in-place electrodes are abnormal; the in-place electrodes comprise anodes and cathodes, the redundant bit electrodes comprise anodes and cathodes; the anodes of the in-place electrodes are connected with the anodes of the redundant bit electrodes, and the cathodes of the in-place electrodes are connected with the cathodes of the redundant bit electrodes; wherein, the cathodes of the at least two redundant bit electrodes are shared; or, the anodes of the at least two redundant bit electrodes are shared; The repairing method comprises: Removing the abnormal light emitting device on the in-place electrode; Welding a new light emitting device with the same light emitting color as the light emitting device on the in-place electrode on the corresponding redundant bit electrode.

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