EL-combined sheet switch
US6198060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An EL-combined sheet switch including a circuit board having a driving circuit mounted on its back surface and having a switch pattern formed on its front surface in combination with a contact sheet having a counter electrode on its back surface in such a manner that the counter electrode faces the switch pattern to construct a switch mechanism. On the front surface of the contact sheet is attached an EL sheet and a shield layer is provided between the contact sheet and the EL sheet. In the EL-combined sheet switch, as described, the electromagnetic noise from the EL sheet which might otherwise affect the operation of an electronic device is blocked by the shield layer. The shield layer is preferably connected with a ground electrode formed on the circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.