Patent ID: 9461107
Filing Date: 2016-10-04
CPC Classification: B23K,H01L,H01S

Claim Text:
1. A method of using an excimer laser annealing apparatus to perform annealing, wherein the excimer laser annealing apparatus includes a substrate holder and an excimer laser unit, wherein the substrate holder has a support surface for supporting a substrate having an amorphous silicon film and a thermoregulating module for regulating the temperature on the support surface so as to control crystal orientation of amorphous silicon in the amorphous silicon film, wherein the thermoregulating module is constituted by at least two light-absorbing components and at least two light-reflecting components mounted on the support surface, wherein the light-absorbing components and the light-reflecting components are embedded in the substrate holder; and the excimer laser unit is used to irradiate excimer laser beams onto the substrate; wherein the method of using an excimer laser annealing apparatus to perform annealing comprises steps of: providing the substrate having an amorphous silicon film on the substrate holder; and using the excimer laser unit to perform an annealing treatment on the amorphous silicon film so that the amorphous silicon of the amorphous silicon film recrystallizes along a thermoregulating direction of the thermoregulating module in a predetermined area to form a polysilicon film, wherein the predetermined area is an area of the amorphous silicon film which corresponds to the position of the thermoregulating module.