Display device
US5862275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Jun 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a display device for displaying a picture on an optical waveguide plate in accordance with an image signal by controlling displacement movement of each of actuator elements in a direction to make contact or separation with respect to the optical waveguide plate so that scattered light is controlled at a predetermined position on the optical waveguide plate, wherein the actuator element comprises a main actuator element including a piezoelectric/electrostrictive layer, and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer, a vibrating section contacting with a second principal surface of the piezoelectric/electrostrictive layer, for supporting the main actuator element, and a fixed section for supporting the vibrating section in a vibrative manner, and wherein the actuator element further comprises a displacement-transmitting section for transmitting, to the optical waveguide plate, displacement movement of the main actuator element caused by applying a voltage between the pair of electrodes. According to the display device, the electrostatic capacity of the actuator element can be reduced, further, display brightness w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.