Broken wire restoration method for TFT substrate

Abstract

The invention provides a broken wire restoration method for a TFT substrate. The method comprises the steps of firstly, finding a broken wire in the TFT substrate and the position of a break point on the broken wire, then conducting processing on a passivation layer and the intersection positions, located at the two ends of the break point, of the broken wire separately so that a metal layer where the broken wire is located can be exposed, then covering the passivation layer and the exposed parts, at the two ends of the break point, of the metal layer with a transitional material layer, and finally, forming a metal long film on the transitional material layer, so that the parts, at the two ends of the break point, of the broken wire are communicated. Through arrangement of the transitional material layer, the problem that the restoration effect is not good due to residues of a color resistance layer or folds of the passivation layer can be solved, the adhesion effect and uniformity of the metal long film on the passivation layer are improved, wire breaking and peeling risks of the metal long film are lowered, and the success rate for restoring the broken wire of the TFT substrate is raised.

Description

Technical field [0001] The present invention relates to the field of liquid crystal display technology, and in particular to a method for repairing a broken line of a TFT substrate. Background technique [0002] Liquid crystal display (LiquidCrystalDisplay, LCD) is one of the most widely used flat panel displays, and the liquid crystal panel is the core component of the liquid crystal display. [0003] A traditional liquid crystal panel is usually composed of a color filter (CF) substrate, a thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate), and a liquid crystal layer (LiquidCrystalLayer) disposed between the two substrates. The working principle is Liquid crystal molecules are placed between two parallel glass substrates. There are many small vertical and horizontal wires between the two glass substrates. The liquid crystal molecules are controlled to change direction by energizing or not, and the light from the backlight module is refracte...

AI Technical Summary

Problems solved by technology

In the method of repairing the disconnection, when removing the color resistance, if the energy for removing the color resistance is too small, color resistance residues will be left on the passivation layer 500 ′; Forming wrinkles on the 500' will eventually make the metal long film 700' too thin locally and the adhesion between the metal long film 700' and the passivation layer 500' will be poor, which will easily cause the risk of disconnection and peeling (Peeling) of the metal long film 700'. Reduce the repair success rate of TFT disconnection

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