Subtractive display
US7586472B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2005 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display and techniques for displaying information involve the use of pixel-generating elements that include a light conduit and multiple adjustable light absorbing filters. The light conduit allows light from a light source to pass from a first side to a second side of the pixel-generating element. A first adjustable light absorbing filter adjustably absorbs a first set of visible light wavelengths from light passing through the light conduit to produce a first filtered light. A second adjustable light absorbing filter adjustably absorbs a second, different set of visible light wavelengths from the first filtered light. Each adjustable light absorbing filter is adjustable to a substantially transparent state, and the pixel-generating element generates a viewable pixel having a color adjustable between substantially a color of the light source and a color of the light source as modified by one or both of the adjustable light absorbing filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.