Patent ID: 7525732
Filing Date: 2009-04-28
Classification: B81B,B81C,C03C,G02B,G02F,Y10T

Abstract:
1. A micro-lens array substrate, comprising: a glass substrate having an array of hemisphere-like recesses formed therein, said glass substrate containing at least one etching control component at a density which causes an elution of said etching control component from said glass substrate when being subjected to an isotropic etching process using an etching solution for the formation of said hemisphere-like recesses in said glass substrate, wherein said isotropic etching process comprises: applying a mask having an array of openings, to said glass substrate; and etching said glass substrate with said etching solution so that said array of hemisphere-like recesses is formed so as to correspond to said array of openings, the etching of said glass substrate being allowed to continue until the etching is stopped when the etching control component eluted out said glass substrate in the etching solution accumulates on inner surfaces of said hemisphere-like recesses so that the inner surfaces of said hemisphere-like recesses are prevented from contacting a fresh part of the etching solution.