High density electrochromic display

Details High density electrochromic display High density electrochromic display

1996-07-17

1998-12-08

Epps, Georgia Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359274, G02F 1153

Patent

active

058478604

ABSTRACT:
An electrochromic display and a method for making thereof are disclosed. The display has isolated and perforated reflectors separating an electrolyte confined between two electrodes. The front electrode is transparent. The reflector eliminates the need to include pigment particles in the electrolyte to mask the black rear electrode and to provide a desired color background. The pigment free electrolyte is thinner than a pigmented electrolyte. The reflector reflects light back to the transparent electrode thus masking the rear electrode and providing a background color other than black. When the rear electrode is driven by a drive circuit, ions of the electrolyte and current pass through the reflector towards the front electrode, where a coloration reaction occurs to form an image. The electrochromic display is thin, has high resolution, and does not exhibit image spreading and distortion.

REFERENCES:
patent: 3844636 (1974-10-01), Maricle
patent: 4354741 (1982-10-01), Mano et al.
patent: 4598979 (1986-07-01), Sugiuchi et al.
patent: 5056899 (1991-10-01), Warszawski
patent: 5069535 (1991-12-01), Baucke et al.
patent: 5078480 (1992-01-01), Warszawski
patent: 5253100 (1993-10-01), Yang et al.

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