Luminous keyboard
US8878086B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Dec 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminous keyboard includes a light-emitting element, a membrane circuit member, a key base plate, and plural keys. The membrane circuit member includes an upper wiring board and a lower wiring board. A first circuit pattern is formed on the lower wiring board. A second circuit pattern is formed on the upper wiring board. The first circuit pattern and the second circuit pattern collectively define plural membrane switches. The lower wiring board further includes plural film layers for increasing the light-guiding efficacy of the lower wiring board. Moreover, the plural keys are connected to the key base plate. The key base plate is arranged between the plural keys and the membrane circuit member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.