Patent ID: 9502603
Filing Date: 2016-11-22
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a vertically structured Group III nitride semiconductor LED chip, the method comprising: a first step of forming a light emitting structure laminate by sequentially stacking a first conductivity type Group III nitride semiconductor layer, a light emitting layer, and a second conductivity type Group III nitride semiconductor layer on a growth substrate with a lift-off layer provided therebetween, the second conductivity type Group III nitride semiconductor layer being different from the first conductivity type Group III nitride semiconductor layer; a second step of forming a plurality of separate light emitting structures by partially removing the light emitting structure laminate to partially expose the growth substrate; a third step of forming a conductive support having a lower electrode, the conductive support integrally supporting the plurality of the separate light emitting structures, each of the plurality of the separate light emitting structures having: (i) a first through-hole formed to open in a central region such that at least the lift-off layer is exposed, and (ii) a second through-hole provided in a portion penetrating through the conductive support, the portion corresponding to the central region of each of the light emitting structures, the second through-hole being in communication with the first through-hole in each of the plurality of the light emitting structures; a fourth step of separating the growth substrate from the plurality of the separate light emitting structures by removing the lift-off layer using a chemical lift-off process by supplying an etchant through the first through-hole; and a fifth step of dividing the conductive support between the light emitting structures in order to singulate a plurality of LED chips, each of the plurality of LED chips having the light emitting structure supported by the conductive support.