Liquid crystal display device
US4062626A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1975 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Sep 5, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device in which an electronic switch having a double threshold characteristic is combined with each of a plurality of liquid crystal cells, and an ac signal voltage and an ac bias voltage are applied to one and the other terminals respectively of the combined circuit of the liquid crystal cells and electronic switches. In the device, the electronic switches are turned on or off depending on the relation between the phase of the signal voltage and that of the bias voltage so that the liquid crystal cells can be excited for display by the voltage applied thereacross in response to the turn-on of the electronic switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.