| 摘要 |
PROBLEM TO BE SOLVED: To prevent pixel apertures from attaining a high temp. by light for irradiation and to prolong the life of liquid crystals by packing a high-refractive index material into recessed parts to form convex lenses and further forming these recessed parts to a shape larger in the radius of curvature in the bottoms than the radius of curvature in the side parts, for example, a flat shape. SOLUTION: The many recessed parts 9 to be completely closely packed are formed by etching on one surface side of the flat plate type microlenses and the high-refractive index material is packed into the recessed parts 9, by which the planoconvex lenses 10 are formed. The recessed parts 9 are formed to the sectional shape having the flat bottoms 9a. Namely, the radius of curvature of the bottoms 9a is made larger than the radius of curvature of the side parts 9b. Then, the recessed parts 9 which are the lens parts of the flat plate type microlenses are formed the shape larger in the radius of curvature of the bottoms 9a than the radius of curvature of the side parts 9b, for example, the flat shape and, therefore, the light for irradiation converged by the lens parts of the flat plate type microlenses eventually passes the pixel apertures of the liquid crystal layer in the state having some spread without converging at one point in the pixel apertures. |
