| 摘要 |
PURPOSE: To provide a high-contrast liquid crystal spatial light modulator which has more homogeneous oriented film layers and thereby, shows lesser unevenness of contrast by smoothing and homogenizing the undercoating layers of the oriented film layers of the optical modulator using oriented film layers formed basically with an oblique vapor deposition method. CONSTITUTION: This liquid crystal special light modulator is the one of electrical writing type obtained by successively forming a transparent substrate 1a, a transparent electrode layer 2a, an oriented film layer 6a, a liquid crystal composition layer 8, another oriented film layer 6b, another transparent electrode layer 2b and another transparent substrate 1b in this order, and also the one of the optical writing type obtained by successively forming a transparent substrate 1a, a transparent electrode layer 2a, a photoconductive film layer 3, a light-shielding film layer 4, a light reflection layer 5, an oriented film layer 6a, a liquid crystal composition layer 8, another oriented film layer 6b, another transparent electrode layer 2b and another transparent substrate 1b in this order. At this time, each of the oriented film layers 6a and 6b is an obliquely vapor-deposited layer consisting essentially of silicon monoxide or a layer formed by further modifying the surface of this vapor-deposited layer with a surfactant and also, the liquid crystal composition used is a nematic liquid crystal composition having negative anisotropy of the dielectric constant or a ferroelectric liquid crystal composition and further, smoothed layers 7a and 7b each consisting essentially of silicon dioxide are formed in the spaces between the oriented film layer 6a and the light reflection layer 5 and between the oriented film layer 6b and the transparent electrode layer 2b respectively. |
