Electrophoretic display panel
US8040318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134363
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The electrophoretic display panel(1) for displaying a picture and subsequently displaying a subsequent picture has a pixel(2) having an electrophoretic medium (5) having first and second charged particles (6,7) and an optical state depending on the positions of the particles (6,7) in the common region (30) of the pixel (2). Furthermore, transition control means are able to control a transition of the first and the second particles (6,7) being in substantially separated domains of the common region (30) for displaying the picture to substantially separated domains of the common region (30) for displaying the subsequent picture. For the display panel (1) to be able to have an attainable optical state for displaying the subsequent picture which is unequal to the optical state determined by the mixture of the first and second particles (6,7), even if the particles (6,7) have substantially equal electrophoretic mobilities, the transition control means are further able to control the first and the second particles (6,7) to be in substantially separated domains of the common region (30) during the transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.