Backlighted key for a keypad of an electronic device
US7977593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2009 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jul 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a key plunger and a key assembly for a key of an electronic device. The plunger comprises: a stalk made of a first material allowing light to pass through and a body section connected to the top of the plinth. In the plunger, the body section is made of a second material and shaped to fit snugly within an interior of a cap for the key and to extend horizontally about the stalk. The second material is a translucent, light-diffusing material; the first material allows more light to pass therethrough than the second material. The key assembly comprises: a key plunger; a key cap shaped to fit over the key plunger; and a backlight to illuminate an interior of the key cap. The backlight may be located underneath the key plunger and to a side of the stalk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.