Patent ID: 9005697
Filing Date: 2015-04-14
Classification: C30B,H01L,Y10T

Abstract:
1. A silicon crystallization method comprising: depositing an amorphous silicon layer on an insulating substrate; melting the amorphous silicon layer by illuminating a laser beam through a mask including a plurality of transmitting areas and a plurality of blocking areas; and forming a crystallized silicon layer by crystallizing the melted amorphous silicon layer, wherein a first outline of a first transmitting area of the transmitting areas has a stepwise shape and the first outline having the stepwise shape is formed as only one of an upper outline and a lower outline of the first transmitting area, wherein grain boundaries of the crystallized silicon layer do not coincide with each other between the first outline of the first transmitting area and a second outline of the first transmitting area opposite the first outline, wherein the grain boundaries form central transverse lines between the first outline of the first transmitting area and the second outline of the first transmitting area and the central transverse lines do not coincide with each other.