Repairing Method for Dark Spots on Copper Interconnect COA LCD Panel and Structure of Copper Interconnect COA LCD Panel

摘要

A method of repairing dark spots on a COA LCD panel includes: providing a COA LCD panel having a substrate (11), a metal layer (12), a passivation layer (13), a color resistance layer (14), and a pixel electrode layer (15), the COA LCD panel including pixels, among which exist pixels of light spot defect, and via holes (41) through the color resistance layer, each via hole corresponding to one pixel; using laser from a side of the substrate (11) targeting at the via holes (41) corresponding to the defective pixel; controlling the laser to melt the metal layer (12) and welding the metal layer (12) with the pixel electrode layer (15); adjusting a relative potential and a pixel voltage of the pixel electrode layer (15) to be zero, so that a pixel area in the pixel electrode (15) layer shows as constant darkness, which finishes the repairing operation.

主权项

1. A method of repairing dark spots on a copper interconnect color filter on array (COA) liquid crystal display (LCD) panel, comprising:
Step 1: providing a copper interconnect COA LCD panel comprising a substrate, a metal layer configured on the substrate, a passivation layer configured on the metal layer, a color resistance layer configured on the passivation layer, and a pixel electrode layer configured on the color resistance layer, the copper interconnect COA LCD panel comprising a plurality of pixels, among which exist a defective pixel of light spot defect, and a plurality of via holes through the color resistance layer, each via hole corresponding to one of the plurality of pixels; Step 2: using laser from a side of the substrate targeting at the plurality of via holes corresponding to the defective pixel on the color resistance layer; Step 3: controlling a volume of the laser so as to melt the metal layer and welding the metal layer, through the corresponding via hole, with the pixel electrode layer; and Step 4: adjusting a relative potential of the pixel electrode layer to be zero, adjusting a corresponding pixel voltage in the pixel electrode layer to be zero, so that a corresponding pixel area in the pixel electrode layer shows as constant darkness, which finishes the repairing operation.