Electro-optic passive display device
US4138195A · kind A · utility
10Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1977 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | May 5, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/0041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electro-optic display device uses a transparent luminescent panel to reflect and diffuse ambient light, or light from the luminescent panel to a display cell to enable a user to read the display cell. The luminescent panel includes a first transparent electrode arranged between the display cell and a luminescent film. The panel further includes an activation electrode on the opposite side of the film from the first electrode. The activation electrode acts as a reflector - diffuser to reflect and diffuse light received through the other parts of the panel or from the luminescent film itself back to the display cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.