Non-backlighted illuminating keypad
US7893375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jul 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-backlighted illuminating keypad includes a keypad panel, a light gathering layer, an electronic ink layer, a first elastic layer and a switch board. The keypad panel includes a carrier and a plurality of keycaps arranged on the carrier. The light gathering layer is arranged on a bottom surface of the keypad panel and located corresponding to the keycaps. The electronic ink layer is arranged on a bottom surface of the light gathering layer. The first elastic layer is arranged on a bottom surface of the electronic ink layer and comprises a plurality of protrusion portions respectively corresponding to the keycaps. The switch board is arranged below the elastic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.