Array panel and method of driving the same
US7920113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2007 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Feb 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An additional capacitor (“sharing capacitor”) is provided for each pixel of a liquid crystal display to store the previous voltage on the pixel electrode (i.e. the voltage obtained in the previous frame). At an opportune time after the pixel electrode has begun to charge for the current frame, the sharing capacitor's electrode is coupled to the pixel electrode to combine the pixel electrode's voltage with the sharing capacitor's voltage. As a result, the pixel electrode's voltage is changed to take into account the previous voltage so as to increase the liquid crystal's response speed. More particularly, the sharing capacitor's voltage changes the pixel voltage to provide a greater voltage overshoot or undershoot when the pixel color is changed a lot, so as to increase the liquid crystal response time. Therefore, greater response speed is provided at low power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.