Patent ID: 8541251
Filing Date: 2013-09-24
Classification: B23K,H01L,H01S

Abstract:
1. A method for manufacturing a light-emitting device comprising: a second step of irradiating a sapphire substrate having a front face formed with a III-V compound semiconductor layer with first laser light along a predetermined line to cut while locating a converging point within the sapphire substrate and using a rear face of the sapphire substrate as a laser entrance surface, and thereby forming a modified region within the sapphire substrate along the line; a third step of forming a light-reflecting layer on the rear face of the sapphire substrate after the second step; and a fourth step of extending a fracture generated from the modified region acting as a start point in a thickness direction of the sapphire substrate after the third step, and thereby cutting the sapphire substrate, the III-V compound semiconductor layer and the light-reflecting layer along the line, and manufacturing the light-emitting device.