Patent ID: 11961848
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The manufacturing method for the display substrate according to claim 4, wherein the forming the first metal film layer on the gate insulating layer comprises:
depositing a first molybdenum metal layer, a copper metal layer, an aluminum metal layer, and a second molybdenum metal layer successively on the gate insulating layer; and
the forming the pattern of the gate and of the gate line by patterning the first metal film layer comprises:
forming a photoresist layer on the second molybdenum metal layer;
forming a photoresist pattern by patterning the photoresist layer, wherein the photoresist pattern comprises a partially retained region, a completely retained region, and a completely removed region, the partially retained region covers the opposite region, the completely retained region covers a region where the gate and the gate line are located, and the completely removed region covers other regions; and
forming the pattern of the gate and of the gate line by wet etching the exposed first molybdenum metal layer, copper metal layer, aluminum metal layer, and second molybdenum metal layer by using the photoresist pattern as a shield.