Liquid crystal display device
US4984873A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device, comprising: (a) a liquid crystal layer disposed between a pair of light permeable substrates, an alignment of a liquid crystal of said liquid crystal layer being substantially horizontal relative to said substrates in the absence of applied voltage, said liquid crystal layer having a twisted structure with a twist angle along a direction of a thickness thereof such that an adequate display is provided without substantially reducing the time dimensional driving; (b) a pair of polarization means disposed on both outsides of said liquid crystal layer; and (c) at least one birefringent medium layer disposed between one side of said liquid crystal layer and the polarization means on said one side of said liquid crystal layer; an optical axis of said birefringent medium layer being inclined toward a polarization axis of the adjacent polarization means, the alignment direction of said liquid crystal on a surface of another side of said liquid crystal layer making an angle from 0.degree. to 25.degree. relative to the polarization transmission axis or an absorption axis of the polarization means, the direction of a maximum refractive index of said birefringe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.