Light-emitting device and electronic device using the same
US7789546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Sep 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/2054
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light-emitting device and an electronic device using the same are provided. The light-emitting device includes a light-guiding plate, a circuit board, at least one light source unit and a reflective layer. The circuit board is disposed under the light-guiding plate. The reflective layer is disposed above the light-guiding plate. The light-guiding plate has at least one hole. The light source unit is disposed on the circuit board and within the hole. The reflective layer is disposed above the hole. The light-emitting device is disposed on one side of a part, such as a keypad, of the electronic device for providing light to the keypad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.