Patent ID: 9748441
Date: 2017-08-29
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor light emitting device substrate, the method comprising: arranging a plurality of particles in a monolayer on a substrate so that an arrangement deviation D (%) defined by a formula (1) shown below is not greater than 15%; dry etching said plurality of particles arranged to provide a void between the particles in a condition in which said particles are etched while said substrate is not substantially etched; and dry etching said substrate by using the plurality of particles after said particle etching as an etching mask, thereby forming an uneven structure on one side of said substrate: with a proviso that in formula (1), A denotes an average particle diameter of particles, B denotes a most frequent pitch between particles; and |B−A| denotes an absolute value of difference between A and B, wherein an absolute difference (TTV) between a maximum thickness and a minimum thickness of said substrate is from 5 μm to 30 μm, a difference (WARP) between a maximum value and a minimum value of deviation from a reference plane is from 10 μm to 50 μm, and an absolute value (|BOW|) of a distance from a reference plane at a central portion of the substrate is from 10 μm to 50 μm.