Patent ID: 9230999
Filing Date: 2016-01-05
CPC Classification: H01L

Claim Text:
1. A fabrication method of a pixel substrate, comprising: forming a channel layer and a first electrode layer on an insulating layer, wherein both the channel layer and the first electrode layer are located in a pixel region of a substrate; forming an etching-barrier material layer on the substrate to entirely overlay the channel layer, the first electrode layer and the insulating layer; performing an etching step for patterning the etching-barrier material layer to form an etching-barrier pattern layer having a first contact opening exposing a non-shielded portion of the insulating layer, wherein subsequent to forming the etching-barrier pattern layer, the etching step further removes the non-shielded portion of the insulating layer to form a second contact opening at the insulating layer; forming a source, a drain and an upper pad; forming a protective layer on the substrate to overlay the source, the drain and the upper pad; and forming a second electrode layer on the protective layer, wherein the second electrode layer is located in the pixel region and has a plurality of slits, and a first projection area of the first electrode layer on the substrate and a second projection area of the second electrode layer on the substrate are overlapped with each other.