Addressing method for a bistable nematic liquid crystal matrix screen with regulated average quadratic voltage
US8487856B2 · kind B2 · utility
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5References
19Claims
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Key dates
| Filing date | Mar 20, 2007 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | May 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for addressing a bistable nematic matrix LCD having two stable textures without any applied electric field. Pixel addressing is of the passive multiplex type. The method includes selecting the value of the electrical voltage applied between the substrates so that an average value of the voltage, preferably the average quadratic value, since the initial command for image display up to the time immediately preceding switching, has a predetermined value independent of the information to be displayed, which is the same for all the pixels of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.