tft‑lcd array substrate and repair method for broken data lines

Abstract

A TFT-LCD array substrate and a method for repairing a broken line of a data line thereof. The TFT-LCD array substrate comprises a first metal layer, a second metal layer and a transparent electrode layer which are arranged successively from bottom to top; a gate line (2) and a common electrode line are formed in the first metal layer; a data line (1) is formed in the second metal layer; a pixel electrode (3) is formed in the transparent electrode layer; the gate line (2) and the data line (1) are crossed to form a pixel area; the pixel electrode (3) and the common electrode line are arranged in the pixel area; the common electrode line comprises a first electrode line (4) and a second electrode line which are connected to each other; the projection of the second electrode line and that of the data line (1) on the second metal layer are parallel to each other; and the projection of the first electrode line (4) and that of the data line (1) on the second metal layer are intersected.

Description

technical field [0001] The invention relates to the field of TFT-LCD substrate manufacturing, in particular to a TFT-LCD array substrate and a method for repairing broken data lines thereof. Background technique [0002] With the development of the information society, people's demand for display devices has increased. In order to meet this growing demand, flat panel display devices such as Liquid Crystalline Display LCD (Liquid Crystalline Display LCD), Plasma Display Panel (PDP), OLED (Organic Light-Emitting Diode) display devices, etc. have been rapidly developed. development of. Among flat panel display devices, liquid crystal display devices are gradually replacing cold cathode display devices due to their advantages of low weight, small size, and low energy consumption. [0003] The initial liquid crystal display devices are driven passively. The so-called passive driving is to apply voltage directly to the upper and lower electrodes of the pixel. The liquid crystal...

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Problems solved by technology

[0006] However, for the TFT-LCD array substrate made of COA technology (Color Filter On Array), the film thickness of the color layer (RGB layer) is relatively thick, reaching 3um ~ 5um, so the disconnection repair is carried out according to the above method When the melting thickness is large and the contact depth is deep, the metal tungsten on the deposit is very easy to break, resulting in a reduction in the success rate of repair.

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