LCD of a selected twist angle through an LC material of a selected chiral pitch
US5864376A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133784
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a liquid crystal display device comprising a plurality of layer domains of a liquid crystal material between a first and a second substrate member with two adjacent ones of which domains made to serve as a first layer domain of a first twist angle of liquid crystal orientations and as a second layer domain of a second twist angle of liquid crystal orientations, an angle between the first and the second twist angles is selected between 80.degree. and 100.degree. with the liquid crystal material made to have a chiral pitch between 20 micrometers and 200 micrometers in each of the first and the second layer domains. Preferably, the liquid crystal orientations have a pretilt angle between 0.degree. and 1.50.degree. at an interface between the liquid crystal material layer domains and at least one of the first and the second substrate members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.