Thin keypad assemblies and components for electronics devices and methods
US7404682B2 · kind B2 · utility
10Cited by
15References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Apr 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for a keypad assembly including a keycap layer 110 having multiple user interface key caps flexibly coupled to a carrier portion, a luminescent layer 120 disposed toward a backside of the plurality of key caps, the luminescent layer carrying a plurality of switch domes each aligned with a corresponding one of the plurality of key caps of the key cap layer. In some embodiments, a backing material is applied to a backside of the user interface key caps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.