Color whiteboard stylus and display
US7142350B2 · kind B2 · utility
2Cited by
5References
65Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jan 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to a display device, the device comprising: a transparent surface; a suspension media disposed against the transparent surface; a plurality of color particles disposed throughout the suspension media, wherein each color of particle has a different time response to an applied electric field than each other color of particle; and an input instrument located substantially adjacent to the transparent surface such that the input instrument is operated to cause a portion of the color particles to migrate towards the transparent surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.