Unevenly illuminated keyboard
US7154059B2 · kind B2 · utility
58Cited by
19References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jul 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An unevenly illuminated keyboard has a mask element between a luminous element and keycaps which are illuminated by the luminous element. The mask element has a permeable zone corresponding to each keycap and an impermeable zone on the neighboring area of the keycap but not beneath thereof such that the light emitted from the luminous element projects and illuminates the individual keycap to form the unevenly illuminated keyboard that illuminates only the keycaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.