Reflective plates for a liquid crystal display device
US3984176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1975 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Jan 29, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133626
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Reflective plates for liquid crystal display devices are provided. These plates comprise a composite of a transparent base material as a matrix and having incorporated therein a plurality of small transparent grains or granules. These granules have a different refraction ratio from the matrix material. The reflective composite plate member comprises said matrix and said grains and may have a reflective surface coated or attached to one face of said plate member. Light entering into said composite reflective plate member is refracted by the grains thus providing a distinctive background appearance for the display device into which this plate is incorporated. The light is reflected variably because of the different refractive paths reaching the eye of the observer via the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.