Electro-optical display device
US4270846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1978 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Dec 21, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/0035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical display device comprises electro-optical material sandwiched between a pair of substrates each having formed thereon electrodes. The electrodes on one substrate comprise a segment display electrode part comprised of a plurality of seven-segment electrodes, and a dot matrix display electrode part comprised of a plurality of parallel linear electrodes. The electrodes on the other substrate comprise a complementary counter electrode part corresponding to the segment display electrode part, and a complementary counter electrode part comprised of a plurality of parallel linear electrodes perpendicularly intersecting the linear electrodes formed on the other substrate. The electrode leads which are connected to some of the seven-segment electrodes also comprise some of the linear electrodes of the dot matrix display thereby reducing the overall number of separate electrodes and enabling construction of a more simple display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.