Driving methods for bistable displays
US8274472B1 · kind B1 · utility
108Cited by
29References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 11, 2008 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Driving methods are described for display devices which have one or more dielectric layers in the path of an electric field driving the display. In an embodiment, image uniformity is improved by periodically refreshing, using an intermediate color state, pixels that remain in one color state before and after a change in displaying a first image and a second image, and by applying driving signals using voltage levels and durations that maintain a global DC balance in the display at near zero to avoid contrast reduction and image artifacts in the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.