Electrophoretic display with sub relief structure for high contrast ratio and improved shear and/or compression resistance
US6795229B2 · kind B2 · utility
53Cited by
88References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Aug 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134363
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to an electrophoretic display comprising isolated cells of well-defined shape, size and aspect ratio which cells have internal sub relief structures and are filled with charged pigment particles dispersed in a dielectric solvent. The display shows an improved contrast ratio and resistance against shear and compression pressures. The display may have the traditional up/down switching mode, an in-plane switching mode or a dual switching mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.