Thin keypad assembly
US7759588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0283
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A thin keypad assembly with a keypad panel of a smooth surface, a mist surface or a lines layer includes an elastic layer, a carrier and a keypad layer. The elastic layer includes a plurality of support portions, and each support portion has a protrusion. The carrier is installed on a surface of the elastic layer, and the joint surface of the carrier and the elastic layer sequentially includes a ground color layer, a function color layer and a font color layer. The keypad layer has a holder disposed on a surface of the carrier, and a plurality of protruding or flat keycaps are disposed on the holder, and a smooth surface is formed on the surface of the keycap, and the surface of the holder is a mist surface, or the surfaces of both keycap and holder are a lines layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.