| 摘要 |
PURPOSE:To realize the DC driving and to facilitate a display of animations for an electro-optical device, by forming a liquid crystal light valve with a photoconductive layer having the rectifying properties. CONSTITUTION:A rectifying photoconductive layer 9 containing a base layer 9a, an i-layer 9b and an n-layer 9c is provided on a transparent electrode 2b on a transparent substrate 1b. A reflecting mirror 8, a transparent insulating layer 7 and a light shielding layer 5 are formed on the layer 9. Then a deflecting plate 10 and a transparent electrode 2a are provided on both surfaces of another transparent electrode 1a, and a liquid crystal layer 3 is enclosed between the layer 5 and the electrode 2a. Thus a light valve is obtained. The DC voltage adverse to the rectifying properties of the layer 9 is applied, and then the wirting optical signal is projected to form a projected image. While the projected image is erased by applying the DC voltage forward to the rectifying properties of the layer 9. Thus the DC driving is made possible, and a display of animations is facilitated. |
