Method of manufacturing plastic particles for a particle display
US4810431A · kind A · utility
55Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | May 26, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A particle display comprises a plurality of particles which in an electrical field rotate to expose either their white or black surface depending upon the polarity of the field. The particle display can be used for a flat panel ambient-illuminated numeric, alpha-numeric and other forms of visual displays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.