Patent ID: 7643100

Claim:
A liquid crystal display comprising: a first substrate including a micro-lens array having a first array of pixel areas defined thereon, said micro-lens array including a glass substrate having an array of hemisphere-like recesses formed therein, and a transparent material having an high refractive index and applied to said glass substrate such that said hemisphere-like recesses are filled with the transparent material, said glass substrate containing at least one etching control component at a concentration 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; a second substrate having a second array of pixel areas which are defined thereon so as to correspond to said first array of pixel areas; a liquid crystal layer intervened between said first and second substrates which are combined such that said first and second arrays of pixel areas are registered with each other.