Driving apparatus for display device
US7196701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Apr 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power supply circuit (300) for a display device such as a liquid crystal outputs a boosted supply voltage VDD2 during normal operation, and generates a non-boosted supply voltage VDD2 having a voltage lower than that during the normal display operation by controlling the switches for switching the output within the power supply circuit (300) during a power save mode. The non-boosted supply voltage is supplied to the analog circuits of a driving circuit (100) so that the power consumption at the analog circuits is reduced. By controlling the switch for switching the output within the power supply circuit and the supply of the power supply clock, the circuit can be switched, in the power save mode, to either a mode where a lower supply voltage is generated or to a mode where the power supply is turned off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.