PDLC display device including first electrode pattern and second electrode pattern disposed adjoiningly to the first via a boundary area
US6493049B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134309
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid-crystal display device comprising a polymer-dispersed liquid-crystal layer capable of coming into a light scattering state when no voltage is applied, and first and second transparent electrodes capable of forming an electric field to the polymer-dispersed liquid-crystal layer. The first transparent electrode has a first electrode pattern and a second electrode pattern disposed adjoiningly to the first electrode pattern via a boundary area between them. The boundary area has a width adequate to make transparent the polymer-dispersed liquid-crystal layer at its area corresponding to the boundary area, by the action of an electric field formed by the second electrode pattern and second transparent electrode. This liquid-crystal display device enables any desired display to be superimposed on the background image while preventing the difficulty that the wiring area extending to a display mark is displayed or only the edging of the display mark is displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.