Liquid crystal display device with a 50.degree.-80.degree. twist angle
US4952030A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133531
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device of negative display type, which comprises a liquid crystal cell comprising a nematic liquid crystal layer sandwiched between substrates provided with electrodes, a light shielding layer covering other than the area corresponding to a display pattern, a pair of polarizing films provided on both sides of the liquid crystal cell with their polarization axes arranged to permit light from a no voltage-applied portion to pass therethrough, said liquid crystal cell being adapted to apply a voltage sufficient to energize the nematic liquid crystal to the electrodes at a display pattern area other than a desired display pattern, wherein a twist angle of liquid crystal layer is in a range of 50.degree.-80.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.