Thin light permeable keyboard multiple switch assembly including scissors type actuator mechanisms
US6545232B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Nov 20, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin type light permeable keyboard includes a plurality of keys, a plurality of bridge structures, a frame board, a luminescence board, a film circuit board, and a base board. Each of the light permeable keys has a top face in turn coated with a light permeable substrate layer, a light impermeable coating layer, and a light permeable protection layer. Each of the bridge structures is pivoted between each of the keys and the frame board. The luminescence board mounted between the frame board and the film circuit board may function as a luminous member that may mate with the light permeable frame board, elastic members and keys to indicate the sculptured characters, symbols, numbers or patterns on the keys, thereby facilitating the user operating the computer in the dark site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.