Patent ID: 11887992
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A substrate, comprising:
a first film layer;
a second film layer;
a third film layer;
wherein the first film layer is formed on the third film layer, and patterned to form a target pattern;
wherein the second film layer is formed on the third film layer and the first film layer, and the second film layer is stacked on the first film layer on edges of a distribution area of the target pattern;
wherein a film shrinkage rate of the second film layer is less than a film shrinkage rate of the first film layer, and film edges of the first film layer are formed with protrusion structures facing the second film layer within the distribution area of the target pattern;
wherein the first film layer is formed with at least three of the protrusion structures within the distribution area of the target pattern; and
wherein a distance between two of the protrusion structures adjacent to each other is at least three times greater than a width of the protrusion structure.