Luminous keyboard
US8431843B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2011 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Oct 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a luminous keyboard. The luminous keyboard includes an illumination element, a membrane circuit board, and a plurality of keys. The membrane circuit board includes an upper board and a lower board with a plurality of light guide points. The lower board and the upper board have a first circuit layout and a second circuit layout respectively to form a plurality of membrane switches. The plurality of light guide points of the lower board are used to aggregate and scatter light beams provided by the illumination element. Besides, the lower board includes a first membrane and a second membrane in order to increase the upward-scattering light quality of the plurality of light guide points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.