Liquid crystal device having birefringent plate next to polarizer
US4711530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1986 |
| Grant date | Dec 8, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal device comprising a liquid crystal cell in which a ferroelectric liquid crystal are put between two sheets transparent substrates each formed with a transparent electrode to the inside thereof with the peripheral edges of the transparent substrates being sealed, a polymer film having a birefringent property appended on one side of the liquid crystal cell and two polarizing plates disposed on both sides of the liquid crystal cell and such that the polarizing directions thereof are in perpendicular to or in parallel with each other. Coloring for the transmission light is suppressed, by which the display quality can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.