Liquid-crystal display system having a driver circuit capable of multi-color display
US6151005A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1993 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Oct 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid-crystal display system comprising a voltage divider circuit, and a gate circuit. The voltage divider circuit divides n voltages of n different voltage levels supplied from a power source for liquid-crystal displays, into m voltages of m different voltage levels (n<m), n and m are integers large than 1 corresponding to display data. A control signal commands the gate circuit to deliver a first voltage during the first period of one horizontal scanning cycle, and to deliver a second voltage during the second period thereof subsequent to the first period. In response to the control signal, the gate circuit corrects a signal corresponding to the display data and delivers the corrected signal during the first period so as to select a circuit which has a time constant not exceeding that of a circuit for delivering a voltage corresponding to the display data, from among circuits for supplying the m divisional voltages, and it delivers the signal left intact, during the second period. The voltage divider circuit is supplied with the output signal of the gate circuit, and it selects and delivers the voltage. Thus, the selected voltage is delivered directly without a buffer, and the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.