Direct drive split pixel structure for active matrix liquid crystal displays
US5606437A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wide viewing angle liquid crystal display and method of operating the same are disclosed. Each of a plurality of pixel elements of the display have individually driveable first and second pixel sub-elements. A desired average gray scale intensity for a first pixel element is determined. First and second drive voltages are determined as a function of the desired average gray scale intensity for the first pixel element. The first drive voltage is provided to the first pixel sub-element to drive it to a first gray scale intensity. The second drive voltage is provided to the second pixel sub-element to drive it to a second gray scale intensity. The average gray scale intensity for the first pixel element, which is a function of the first and second gray scale intensities, has reduced viewing angle dependence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.