Piano-style keypad employing a light guide
US7825899B2 · kind B2 · utility
6Cited by
31References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2006 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | May 18, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved piano-style keypad comprises a light guide and a key sheet, with the light guide retaining the key sheet on a substrate, such as a printed circuit board of a handheld electronic device. The keypad is advantageously configured to enable key caps of the keypad to be adhered to key bodies of the keypad in a fashion that provides long-term reliability while still providing keys that can readily actuated and that provide tactile feedback that is desirable to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.