Liquid crystal cell employing thin wall for pre-tilt control
US5907380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134336
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal cell has a first substrate having a pixel electrode formed thereon, wherein the pixel electrode has a characteristic width; and a second substrate having a transparent conductive electrode layer formed thereon. Liquid crystal material is disposed between the pixel electrode and the transparent electrode layer. A wall of transparent conductive material projects from the transparent conductive electrode layer toward the liquid crystal material. The width of the wall is less than the characteristic width of the pixel electrode. The wall may comprise a transparent material layer formed on the second substrate and the transparent conductive electrode layer formed on the layer of transparent material. In the alternative, the wall may comprise a transparent conductive material layer formed on the transparent conductive electrode layer. The wall provides a lateral field that controls tilt direction of said liquid crystal material. The wall can also be a transparent non-conductive material projects from the transparent conductive electrode layer toward the liquid crystal material. The slope of the side walls of the wall control the tilt direction of liquid crystal material …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.