Illuminated keyboard
US8168903B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Oct 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminated keyboard includes a frame plate, a character keycap, a light source, a membrane plate, a switch circuit plate and a base plate. The character keycap is connected with the frame plate, and movable upwardly or downwardly with respect to the frame plate. The light source is disposed under the character keycap for emitting invisible light. The character keycap, the frame plate, the membrane plate, the switch circuit plate and the base plate are sequentially arranged from top to bottom. The illuminated keyboard further includes a luminous substance, which is excited by the light source to generate visible light to irradiate the illuminated keyboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.