Array substrate and repair method thereof

Abstract

The invention provides an array substrate and a repair method thereof. According to the method, a storage capacitor electrode in a first metal layer and a drain in a second metal layer are arranged in a staggered manner; one part of a through hole in an organic material layer is corresponding to a region on the drain, wherein the region on the drain is overlapped with the storage capacitor electrode; the other part of the through hole in the organic material layer is corresponding to a region on the drain, wherein the region on the drain is not overlapped with the storage capacitor electrode; when anomalies occur on the through hole, and a pixel electrode layer and the drain cannot contact with each other effectively, and laser can be adopted to perform laser processing on the part of the through hole which is corresponding to the region on the drain which is not overlapped with the storage capacitor electrode, and therefore, the pixel electrode layer and the drain can be weld together; and at a laser welding spot site, the first metal layer is arranged below the drain, and therefore, the first metal layer and the second metal layer will not be welded together. With the array substrate and the repair method thereof adopted, malfunction of spots caused by the anomalies of the through hole can be repaired, and dark spots can be converted to bright spots, and the yield and quality of products can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an array substrate and a repair method thereof. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen, etc. [0003] Generally, a liquid crystal display device includes a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. Among them, the structure of the liquid crystal display panel is mainly composed of an array substrate (Thin FilmTransistor Array Substrate, TFT Array Substrate), a color filter substrate (Color Filter Substrate, CF Substrate), and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. Its working principle is to control th...

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Problems solved by technology

[0006] In the prior art, there is another method for repairing the spot defects caused by abnormal via holes, that is, through the via hole 61 by laser, so that the pixel electrode 70 and the drain electrode 502 are welded together; however, due to the via hole 61 There are two layers of metal below, which are the drain electrode 502 in the first metal layer 2 and the storage capacitor electrode 204 in the second metal layer 5, so it is easy to connect the drain electrode 502 and the storage capacitor electrode 204 in the laser laser process. welded together, causing the repair to fail

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