Method of filling an electrophoretic display
US5279511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Oct 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1679
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a method of filling the interstice between the anode structure and the cathode structure of an electrophoretic image display (EPID) with a fluid dispersion containing solid pigment particles. And more specifically, a method of filling such EPIDs when the interstice between the anode structure and the cathode structure is less than 0.007 inches. The present invention method includes the steps of coating the anode structure with pigment particles prior to the assembly of the anode structure or cathode structure into the EPID. After the pigment particle coated anode or cathode structure has been assembled into the EPID, the EPID is filled with a suspension medium lacking any pigment particles. An electrophoretic effect is then created within the EPID causing the pigment particles to migrate away from the anode or cathode structure they coat, thereby becoming disperse within the suspension medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.