Method of producing UV stable liquid crystal alignment
US8081280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Jul 5, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13378
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a liquid crystal display device, a method for creating desirable pretilt angle by means of topography of the substrates, such as a surface that is sloped with respect to the surface of the electrodes. In combination with a low pretilt but highly photo-stable alignment layer, which may be very resistant to high levels of ultraviolet radiation, a high pretilt and photo-stable alignment structure is generated, by essentially combining two incompatible technical approaches. The ever more stringent requirements for projection displays are met. The methods for producing such sloped surfaces and the considerations related to design of the sloped surfaces are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.