Wide screen display device using an endless belt
US4857908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Oct 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display device in which image data produced by an image scanner separate from the display may be written and erased. The display consists of a movable endless belt. Four embodiments are shown with the belt being made of an electrochromic material which electrochemically shows oxidation-reduction reactions; an optically reversible photochromic material; a thermoplastic sheet produced by applying a photoconductor and a thermoplastic resin to a transparent conductive film; and a color photochromic sheet made up of a photochromic film whose absorption changes when illuminated by light of predetermined wavelengths and a repetitive sequence of color filters of red, green and blue each being formed in a stripe configuration, respectively. Visible images are displayed on the display member based on the image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.