Keypad assembly
US7249861B2 · kind B2 · utility
11Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2004 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Dec 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A keypad assembly (100) for a communication device (200) utilizes two boards, a main circuit board (102) with electronic components including light emitting diodes (LEDs) (104) and a keypad board (108). A lightguide (106) is sandwiched between the two boards (102, 108), the lightguide having window protrusions (112) to accommodate the LEDs (104). The keypad board (108) has openings (116) within which the window protrusions (112) align in order to provide backlighting and sealing to the communication device (200).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.