Method of filling a liquid crystal device with liquid crystal
US4922972A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Mar 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1341
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of filling a liquid crystal device including a pair of parallel substrates having external surfaces with a liquid crystal material is set forth. The liquid crystal device is filled by disposing the liquid crystal device in a vacuum chamber between a pair of opposed parallel plates, evacuating the vacuum chamber, supplying the liquid crystal material to an inlet of the device, elevating the pressure in the chamber to allow the liquid crystal material to enter a space formed between the parallel substrates through the inlet by virtue of a differential pressure between the inside and the outside of the liquid crystal device, and applying opposed pressure with the parallel plates to the external surfaces of the parallel substrates respectively in order to form a uniform liquid crystal device. With the external pressure being applied to compensate for the expansion of the liquid crystal device during the elevation of the pressure within the vacuum chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.