| 摘要 |
PURPOSE:To increase the intensity of reading out light by forming a reflective surface of thin metallic films arranged in matrix. CONSTITUTION:A substrate formed with a transparent electrode 2, a photoconductive film 3, a light absorptive film 4 and a metallic reflective film 5 on a glass substrate 1 and a substrate formed with a transparent electrode 7 on a glass substrate 6 are subjected to an orientation treatment of a liquid crystal and a liquid crystal 8 is sealed therebetween to form a space optical modulator. The transparent electrode is constituted of the transparent conductor such as ITO or tin oxide film, etc. to be normally used. The photoconductive film is constituted of a photoconductive material such as CdS or a-Si. The metallic reflective film is the thin metallic film of Al, etc., and is formed with a picture element pattern into the matrix of a mosaic shape by photoetching. The pattern which is electrically separated and has large light absorptivity is selected for the metallic reflective picture element pattern formed to the mosaic shape. The light output is considerably increased by using the reflection of the metal for the reflective surface in the above-mentioned manner. |
