Metal keypad panel structure with micropore array
US7777144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2008 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal keypad panel structure with a micropore array includes a metal keypad panel, a filling, a pattern layer, a backlight module and an electric signal module. The metal keypad panel has micropores filled with the filling. The pattern layer is on a side of the metal keypad panel. The backlight module is a guide light plate attached onto another side of the metal keypad panel and has patterns, each composed of light guide microstructures. When a light is entered into the guide light plate, the light guide microstructures focus and project the light onto the metal keypad panel to allow users to see the position of each press key clearly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.