Luminous keyboard having plural light guide covers corresponding to key structures
US9899164B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2017 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Mar 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminous keyboard includes a membrane wiring board, plural key structures, and plural light-emitting elements and plural light guide covers corresponding to the plural key structures. Each key structure includes a keycap and an elastic element. Each light guide cover is disposed under the corresponding keycap and surrounds the corresponding elastic element. Each light guide cover receives plural light beams from the corresponding light-emitting element. The plural light beams are guided to the corresponding keycap by the light guide cover and outputted from plural light-transmissible regions of the corresponding keycap. Consequently, the plural light-transmissible regions have uniform luminous efficacy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.