Patent ID: 11894386
Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The method of claim 10, wherein the step of manufacturing the active layer and the metal contact layer in the S10 comprises following steps:
manufacturing a light-shielding layer on the substrate, manufacturing a buffer layer on the light-shielding layer, and manufacturing the active layer on the buffer layer;
depositing a layer of a metal thin film on the active layer to form the metal contact layer, coating a photoresist on the metal contact layer, and exposing and developing the photoresist with a halftone photomask to form a photoresist pattern;
etching the metal contact layer and the active layer to remove a portion of the metal contact layer and a portion of the active layer which are not shielded by the photoresist pattern;
ashing the photoresist pattern to thin two sides of the photoresist pattern and removing a middle portion of the photoresist pattern, thereby creating an exposed portion of the metal contact layer;
oxidizing the exposed portion of the metal contact layer not shielded by the thinned photoresist pattern to form the insulating area; and
stripping the thinned photoresist pattern.