Segment electrophoretic displays and methods for their manufacture
US7715087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133377
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to novel patterned embossing and patterned filling methods. Both methods are simple, reliable and cost effective ways for manufacturing the segment of signage electrophoretic displays. The displays prepared by the present invention requires only one patterned electrode layer. The undesired visible line traces are eliminated and the manufacture of the present displays does not involve the costly precision registration step used in the previously known assembly processes dealing with two patterned electrodes. Moreover, the electrophoretic fluid is present only in the patterned and switchable area of the display. This not only significantly reduces the material cost, but also improves the overall display quality by reducing defects and non-uniformity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.