Liquid crystal display apparatus and method for driving the same
US8174474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Apr 19, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voltage having the positive polarity and a voltage having the negative polarity are alternately applied to a pixel between a counter electrode and a pixel electrode. A counter electrode voltage (Vcom) generating circuit or a source signal generating section is provided each of which controls effective voltages to be applied to the pixel for an identical tone so that an effective voltage having the positive polarity and an effective voltage having the negative polarity are asymmetrically applied to the pixel for all of the tones which can be displayed. The counter electrode voltage (Vcom) generating circuit or the source signal generating section shifts a counter electrode voltage Vcom-A or a source voltage by 0.3 V or more from a voltage causing the effective voltages to be symmetrically applied to the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.