Display apparatus incorporating corrugated beam actuators
US9299275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2014 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Jul 21, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB81B2203/0163
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
This disclosure provides systems, methods and apparatus for shutter-based EMS light modulators controlled by electrode actuators that include complementary sets of corrugations or teeth along the opposing beams of the actuators. The complementary sets of corrugations substantially engage one another when drawn together via an actuation voltage. By applying the actuation voltage across the opposing beams of such an actuator, the beams are drawn together both by the electromotive force resulting from the electric field acting between the portions of the beams that are substantially perpendicular to the direction of actuation of the actuator, and by fringing fields between the sides of the corrugations, which are substantially parallel to the direction of actuation. The additional fringing fields provide for increased electromotive force for a given input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.