Liquid crystal display apparatus
US4824215A · kind A · utility
45Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1988 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Jan 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/35
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Large electronic signs usually employ either incandescent lights or magnetically manipulated elements. A simple alternative includes a plurality of juxtaposed modules on a transparent diffuser plate, each module being defined by a base plate, a top plate and a conductive, liquid crystal coating layer between the plates; transparent electrical contacts in the area of overhang between the top plate and the diffuser plate, and thin wires extending through the diffuser plate for carrying current to the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.