Patent ID: 7224505

Claim:
A manufacturing method of an electro-optical apparatus substrate having a matrix of pixels each with an uneven light-reflection part, comprising: applying a positive photosensitive material on a substrate; a first exposing step of exposing the photosensitive material in a region corresponding to the matrix of pixels with light for making unevenness so as to form a region corresponding to convex portions of the light-reflection parts, the exposing being controlled so that the light acts to a depth that is smaller than a film thickness of the photosensitive material; a second exposing step of exposing an outside region of the electro-optical apparatus substrate with light, the outside region being outside the region corresponding to the matrix of pixels, the exposing being controlled so that the light acts to a depth that is larger than the film thickness of the photosensitive material, without developing the photosensitive material between the first exposing step and the second exposing step; developing the photosensitive material after the second exposing step to remove exposed photosensitive material; and forming a reflection layer on an uneven surface of the photosensitive material formed in the developing process.