DC integrating display driver employing pixel status memories
US5444457A · kind A · utility
56Cited by
4References
65Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1993 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jul 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to an improved drive and control means for matrix addressable electro-optic displays, such as passive matrix LCDs and active matrix LCDs. The present invention achieves improved drive and control of displays through the use of real time computation and memory circuits to simulate the electro-optic condition and the accumulated DC bias of individual display elements. This eliminates the burden of frequent and symmetrical reversals of the drive polarity, and allows the implementation of flexible DC drive methodologies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.