阅读说明：本技术 一种阵列基板、其检测方法、显示面板及显示装置 (Array substrate, detection method thereof, display panel and display device ) 是由 王海涛 王庆贺 李广耀 刘军 宋威 汪军 王东方 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种阵列基板、其检测方法、显示面板及显示装置,在任意一像素单元内的缓冲层、有源层、ITO等工艺过程中产生Particle导致short不良时,可通过激光熔融的方式使与该发生short不良的异常像素单元相邻且发光颜色相同的正常像素单元内的第一延伸部与该异常像素单元内的第二延伸部电连接,即使异常像素单元内的阳极与正常像素单元内的阳极电连接,从而通过正常像素单元驱动异常像素单元正常发光,可以将亮点和暗点像素单元维修成正常的像素单元,提升画面的显示效果,并且本发明只需要改变遮光部和阳极的构图工艺,不需要增加其它工艺和膜层,实现维修异常像素单元的工艺较简单。(The invention discloses an array substrate, a detection method thereof, a display panel and a display device, when particles are generated in the technical processes of a buffer layer, an active layer, ITO and the like in any pixel unit to cause bad short, the first extension part in the normal pixel unit adjacent to the abnormal pixel unit with short defect and with the same light-emitting color can be electrically connected with the second extension part in the abnormal pixel unit by laser melting, even if the anode electrode in the abnormal pixel unit is electrically connected with the anode electrode in the normal pixel unit, so that the abnormal pixel unit is driven by the normal pixel unit to normally emit light, the bright point pixel units and the dark point pixel units can be maintained as normal pixel units, the display effect of the picture is improved, in addition, the invention only needs to change the composition process of the shading part and the anode, does not need to add other processes and film layers, and realizes simpler process of maintaining the abnormal pixel unit.)

1. An array substrate is characterized by comprising a plurality of pixel units distributed in an array mode, wherein each pixel unit comprises a shading part, a thin film transistor and an anode, wherein the shading part, the thin film transistor and the anode are positioned on a substrate in a stacked mode; wherein the content of the first and second substances,

in any one of the pixel units, the light shielding portion has a first extending portion extending in a direction of one of the adjacent pixel units having the same emission color, and the anode has a second extending portion extending in a direction of the other one of the adjacent pixel units having the same emission color;

in two adjacent pixel units with the same light emitting color, orthographic projections of the first extension part in one pixel unit and the second extension part in the other pixel unit on the substrate have an overlapping area, and the first extension part and the second extension part are insulated from each other.

2. The array substrate of claim 1, further comprising: a passivation layer between the thin film transistor and the anode electrode, and a planarization layer between the passivation layer and the anode electrode; the second extension contacts the passivation layer through a first via that extends through the planarization layer.

3. The array substrate of claim 2, further comprising: a color resist layer between the passivation layer and the planarization layer, the color resist layer not overlapping the overlap region.

4. The array substrate of claim 2, further comprising: a buffer layer between the light shielding portion and the thin film transistor, an interlayer insulating layer between the buffer layer and the passivation layer, and a lap joint portion between the passivation layer and the first extension portion;

the lap joint part is electrically connected with the first extension part through a second through hole penetrating through the buffer layer and the interlayer insulating layer, and orthographic projections of the lap joint part and the second extension part on the substrate base plate have an overlapping area.

5. The array substrate of claim 4, wherein the landing part is disposed on the same layer as a drain electrode of the thin film transistor.

6. The array substrate of claim 4, wherein in each of the pixel units, the anode is electrically connected to the drain electrode of the thin film transistor through a third via hole penetrating the passivation layer, and the drain electrode of the thin film transistor is electrically connected to the light shielding portion through a fourth via hole penetrating the interlayer insulating layer and the buffer layer.

7. A display panel comprising the array substrate according to any one of claims 1 to 6.

8. A display device characterized by comprising the display panel according to claim 7.

9. An inspection method of the array substrate according to any one of claims 1 to 6, comprising:

in the lighting test stage, if an abnormal pixel unit exists, a first extension part in a normal pixel unit which is adjacent to the abnormal pixel unit and has the same light-emitting color is electrically connected with a second extension part in the abnormal pixel unit through a laser melting mode, so that an anode in the normal pixel unit is conducted with an anode in the abnormal pixel unit.

10. The inspection method of claim 9, further comprising, before laser melting the passivation layer corresponding to the overlap region:

and melting the active layer of the thin film transistor by using laser to disconnect the thin film transistor.