| 摘要 |
PROBLEM TO BE SOLVED: To form a surface having smooth recesses and projections without melting resin at a high temperature in the process of roughening a photosensitive resin applied on a substrate by exposure and development to form recesses and projections for diffusion of light. SOLUTION: In the production of a light-reflecting substrate 20 to be used for a reflection type liquid crystal display device using an inner diffusion and reflection method, a positive photosensitive polyimide resin 27 is applied in a film state on a glass substrate 21 having a smooth surface, then the resin film is partially exposed through a photomask, developed and baked at a specified temperature. Thus, recesses 27a are formed in the positive photosensitive polyimide resin to roughen the surface. Then a light-reflecting layer consisting of a metal film is formed all over the roughened surface. |
