Micro-electromechanical based bistable color display sheets
US6201633A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Jun 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A micro-electromechanical bistable shutter display device is provided capable of being implemented for both small screen, high resolution devices and for large billboard-type displays. The micro-electromechanical shutter assembly has bi-stability characteristics which allow the use of only a holding voltage to maintain an image. The micro-electromechanical shutter assembly includes a shutter having petal-like shutter segments covering reflective or transmittive films. To expose the film in a particular shutter assembly, its shutter segments are moved from the horizontal to a vertical position using electrostatic attraction forces to "collapse" the torsionally-hinged shutter segments. The shutter assembly can have a number of segments, as long as the resulting shutter assembly shape can be stacked to form a dense 2D array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.