Mechanical keypad with touch pad function
US8207872B2 · kind B2 · utility
30Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Feb 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mechanical keypad with touch panel function includes a key set including a plurality of keycaps and a keytop covering the keycaps, a backlight layer under the key set, a capacitive touch unit selectively disposed under several keycaps, an elastic layer including an elastomer and a plunger corresponding to the keycaps and disposed under the capacitive touch unit as well as a circuit board including metal domes and dome sheets corresponding to the keycaps. Each metal dome provides a mechanical feedback force so that the keycaps are able to be in indirect contact with the metal domes and the dome sheets by means of the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.