Electrically controlled, reflection type display device

摘要

A color display device electrically driven to vary colors and images on its display surface. The color display device comprises a display cell (3) having first and second surfaces (1a, 1b) disposed in opposed relation to each other, at least of a portion of the first surface (1a) being transparent and the second surface (1b) being opaque. A transparent reference electrode layer (5) is formed on the first surface (1a) and a transparent facing electrode (6) is formed on the second surface (1b). Between the reference and facing electrode layers (5, 6) there is packed an electro-optical fluid composition (4) produced by dispersing solid particles (42) with an electric alignment effect in an electrical insulating medium (41). The solid particles (42) respond to an electric field to take a transparent state. The color of the solid particles (42) is made to be different from the colors of the opaque surface (1b) and the electrical insulating medium.