Patent ID: 8946593
Filing Date: 2015-02-03
Classification: B23K,C09K,H01L

Abstract:
1. A patterning method, comprising: providing a substrate; providing a donor substrate having a transfer layer; laminating the donor substrate and the substrate; and irradiating laser radiation onto a region of the donor substrate, which is to be transferred to form a transfer layer pattern on the substrate, the laser radiation irradiated onto an edge of the irradiated region having an energy density greater than that of the laser radiation irradiated onto other portions of the irradiated region, wherein the laser radiation is generated by a light source, a mask arranged under the light source and a projection lens arranged under the mask, and wherein the mask includes an element adapted to change an optical path of the laser radiation, the mask has two surfaces and Fresnel lenses are arranged on both of the two surfaces of the mask.