Manufacturing method and repair wire structure of display panel

Abstract

The invention provides a manufacturing method and a repair wire structure of a display panel. A repair method for a signal wire of the display panel comprises the steps of: connecting a repair wire and a welding pad before a PSVA (polymer stabilization vertical-alignment) process, and connecting the repair wire to a short-circuit bus bar of a signal wire of the same category through the welding pad; and welding a weld point between a breakpoint and the connection point of the repair wire and the short-circuit bus bar on a broken wire, so that a signal applied to the display panel by the short-circuit bus bar is transmitted to the breakpoint through the repair wire in the PSVA process. Since the repair wire is connected with the short-circuit bus bar and is directly powered up through the short-circuit bus bar in the PSVA process, the wire cannot be broken when the signal is transmitted via the short-circuit bus bar, the permanent memory of the broken wire defect of the display panel in the form of a liquid crystal pre-tilt angle on the display panel during the PSVA process can be avoided, and the process yield of the display panel can be increased.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a method for manufacturing a display panel and a repair line structure thereof. Background technique [0002] The liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer filled between the two substrates. Wherein, a large number of signal lines (such as scanning lines and data lines) are arranged on the array substrate. However, in the production process, a large number of signal lines will always be disconnected due to some production defects. At this time, the pixel electrodes on the disconnected lines cannot receive normal data signals, resulting in display defects of the liquid crystal panel. [0003] Especially for the PSVA display mode liquid crystal panel, since the signal line has been disconnected before the PSVA process, when the pre-tilt angle is cured by heating or irradiating ultraviolet light in the PS...

AI Technical Summary

Problems solved by technology

However, in the production process, a large number of signal lines will always be disconnected due to some production defects. At this time, the pixel electrodes on the disconnected lines cannot get normal data signals, thus forming display defects of the LCD panel.

[0003] Especially for the PSVA display mode liquid crystal panel, since the signal line has been disconnected before the PSVA process, when the pre-tilt angle is cured by heating or irradiating ultraviolet light in the PSVA process, the disconnection defect of the display panel will be damaged. It is permanently memorized in the display panel in the form of liquid crystal pre-tilt angle. Even if it is repaired by other repair methods later, it is difficult to completely repair it successfully.

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