Patent ID: 9564323
Date: 2017-02-07
CPC Classifications: B23K,G02B,H01L,H01S

Claim:
1. A method of manufacturing a semiconductor device comprising: homogenizing an energy distribution of a laser beam along a first direction perpendicular to a propagation direction of the laser beam by utilizing at least a first cylindrical lens array and a second cylindrical lens array; homogenizing an energy distribution of the laser beam along a second direction perpendicular to the propagation direction of the laser beam by utilizing at least a third cylindrical lens array and a fourth cylindrical lens array, wherein the second direction is perpendicular to the first direction; condensing the laser beam along a third direction perpendicular the first direction by utilizing at least a doublet cylindrical lens; irradiating a semiconductor film with the condensed laser beam to increase crystallinity of the semiconductor film while changing a relative location of the semiconductor film with respect to the condensed laser beam; and patterning the semiconductor film into a plurality of semiconductor layers, wherein each of the first cylindrical lens array and the second cylindrical lens array has a longitudinal direction along the second direction, and wherein each of the third cylindrical lens array and the fourth cylindrical lens array has a longitudinal direction along the first direction.