Keyboard equipped with a backlight structure
US7588338B2 · kind B2 · utility
12Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2005 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Jun 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/054
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A keyboard equipped with a backlight structure includes a keyboard portion, a bridge board and a base board located beneath the keyboard portion to form a light transmission space. The bridge board has a light channeling portion to channel light entering the light transmission space to the keyboard portion where light emission is desired to refract the light. The structure can be made at a lower cost and converge light to display the keyboard portion without illuminating the entire keyboard portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.