Patent ID: 9230917
Filing Date: 2016-01-05
CPC Classification: H01L

Claim Text:
1. A method for processing a carrier, the method comprising: forming at least two recess structures at least one of over and in the carrier, wherein each of the at least two recess structures comprises a plurality of recesses, wherein a first recess structure of the at least two recess structures comprises more recesses than a second recess structure of the at least two recess structures; annealing the at least two recess structures such that at least two hollow chambers are formed by material of the at least one two recess structures, wherein the at least two hollow chambers comprise a first hollow chamber formed by the first recess structure and a second hollow chamber formed by the second recess structure, wherein the size of the first hollow chamber is greater than the size of the second hollow chamber, wherein the at least two hollow chambers form an optical alignment structure.