Pixel elements having resistive divider elements
US5572344A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Jan 3, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134309
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Pixel elements capable of imaging spatial intensity variations within themselves, and displays comprised of such elements, are described. The pixel elements include a resistance layer disposed between at least one set of electrodes. Over that resistance layer is a liquid crystal material. Over that liquid crystal material is a field electrode. In operation a voltage, whose components are referenced to the field electrode, is applied across the resistance layer. The resulting current flow induces a spatially varying electric field between the field electrode and the resistance layer. That spatially varying electric field results in a corresponding response by the liquid crystal layer which results in a spatially varying light transmission through the liquid crystal material. By varying the voltage across the resistance layer and/or the voltage applied to the field electrode varying amounts of light transmission can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.