| 摘要 |
PURPOSE:To attain full color display at a display level having a high lightness, through transmission type display, by providing a white light source at the back of a display panel. CONSTITUTION:In bidirectional picture communication like a television telephone set, a video signal transmitted from a remote terminal is pictured on a display panel 6 consisting of an optical transmission element such as liquid crystal, PLZT and EC. To attain the display of transmission type effectively, white light sources 9 and concaved mirrors 10 are provided. Since the scanning element is converted from ON to OFF or OFF to ON at each scanning of the element, the display element is in transmission state periodically, a light from external parts passes through the display panel and is incident to an image pickup element 8 for an objective 5, to be picked up. |
