Liquid crystal device, method for driving the same, and projection display and electronic equipment made using the same
US6266039A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Mar 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0219
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a liquid crystal apparatus which is capable of reducing deterioration of image quality owing to optical cross-talk. The data signal supplied to the data signal line changes within a range of negative polarity data voltage amplitude between a first potential and a second potential at the time of applying negative polarity voltage to the liquid crystal layer. The data signal supplied thereto changes within a range of negative polarity data voltage amplitude between a third potential and a fourth potential at the time of applying positive polarity voltage to the liquid crystal layer. Before supplying this data signal to the data signal line, the data signal line is pre-charged by a negative polarity pre-charging potential and a positive polarity pre-charging potential. The positive and negative polarity pre-charging potentials are set so as to be non-symmetrical to the center potential of the data voltage amplitude. Further, the negative polarity pre-charging potential is set so as to be closer to the first potential than the center potential of the positive data voltage amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.