Electro-optic display overlays and systems for addressing such displays
US6704133B2 · kind B2 · utility
310Cited by
335References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Aug 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display overlay includes a contrast media layer and a photoconductive layer disposed between two electrodes. Light from an emissive display strikes the photoconductive layer and lowers the impedance of the photoconductive layer at the point at which the light is incident. Voltage applied to the electrodes creates an electric field that addresses the contrast media layer in locations of reduced impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.