Liquid crystal display panel and restoring method thereof

Abstract

The invention relates to a liquid crystal display panel and a restoring method thereof. The liquid crystal display panel comprises an array substrate, a colored film substrate and signal leads on the array substrate, wherein restoring wires overlapped with the signal leads are arranged among the signal leads. The restoring method comprises: cutting off two ends of a shorted signal lead out of an applying range of a hermetical rim substratum by a laser beam, so as to ensure that two ends of the cut point are not communicated electrically; and then, dotting the overlapped area of the signal leads and the corresponding restoring wires by the laser beam, so as to puncture an insulating layer between each signal lead and each corresponding restoring wire, and melt and combine the signal lead and the corresponding restoring wire together, thereby communicating the signal lead and the corresponding restoring wire electrically. The liquid crystal display panel eliminates adverse display caused by short circuit between the signal lead and a gold ball particle through cutting off the shorted signal lead and utilizing the mode of continuing transferring signals by the restoring wire, thereby improving the yield of the liquid crystal display panel.

Description

Technical field [0001] The invention relates to a liquid crystal display panel and a repair method thereof, in particular to repairable display defects caused by short circuit between gold ball particles and signal leads. Background technique [0002] Traditional CRT displays rely on cathode ray tubes to emit electrons to hit the phosphor powder on the screen to display images, but the principle of liquid crystal display is completely different. Generally, a liquid crystal display device (LCD) has (also called a color filter substrate) and a lower substrate (also called an array substrate), which are spaced apart from each other and face each other. A plurality of electrodes formed on the two substrates face each other. Sandwiched between the upper substrate and the lower substrate, voltage is applied to the liquid crystal through the electrodes on the substrate, and then the arrangement of the liquid crystal molecules is changed according to the applied voltage to display the im...

AI Technical Summary

Problems solved by technology

Although the gold ball particles have a certain degree of elasticity, they still have a certain surface hardness due to the metal substance on the outer layer.

Therefore, under the action of an external force, the gold ball particles 7 with a diameter of several microns are likely to press through the insulating layer 12 on the thin signal lead 13, so that the signal lead layer 6 and the color filter on the array substrate side of two different signals The common electrode conductive layer 9 on the substrate side conducts and forms a short circuit, resulting in poor display

In addition, in the manufacturing process of liquid crystal displays, there are many occasions where static electricity occurs. The highest electrostatic voltage is as high as 2000 volts, and it is easy to break down the insulating layer with a withstand voltage of only about 300 volts; and the ITO of the common electrode on the color filter side is conductive. The layer is covered on the whole surface, the pattern is large, and it is easy to accumulate static electricity. However, there is generally no static protection circuit on the side of the color filter substrate. Static electricity can easily pass through the insulating layer between the gold ball particles and the signal leads, so that two array substrates with different signals The signal electrode on the side is connected to the common electrode on the color filter substrate side, resulting in poor display

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