Computer keyboard having illuminated keys with a sensed light condition
US8354629B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | May 31, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminated keyboard includes optical sensors and units each comprising an optically transmissive key member; a scissors-shaped structure having a top secured to the key member; a light guide diaphragm under the scissors-shaped structure; an insulating diaphragm under the light guide diaphragm and including a light source on a top surface, a positive conductor connected to a positive terminal of the light source and on the top surface, a negative conductor connected to a negative terminal of the light source and on a bottom surface, and a bus having one end interconnecting the positive and negative conductors, and the other end connected to the sensor; a film circuit board under the insulating diaphragm and including a holed rubber dome with the key member positioned therein; and a base board with the scissors-shaped structure retained thereon. Brightness is adjusted in response to light condition as sensed by the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.