Patent ID: 9559159
Date: 2017-01-31
CPC Classifications: H01L

Claim:
1. A method for preparing a low temperature poly-silicon (LTPS) membrane, comprising: forming a pattern of an amorphous silicon (a-Si) layer on a substrate by a patterning process, wherein the a-Si layer comprises a plurality of convex structures and an etched area which is disposed along circumference of the plurality of convex structures and partially etched, and the plurality of convex structures are connected to each other by amorphous silicon in the etched area; depositing an insulation layer, used for preventing heat loss on a surface of the a-Si layer, on the a-Si layer of the substrate; and performing excimer laser crystallization (ELC) on the a-Si layer with the insulation layer being on the surface of the a-Si layer and obtaining the LTPS membrane.