Luminous EL sheet having a domed diaphragm and a switch employing the EL sheet
US6670750B2 · kind B2 · utility
12Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An EL sheet is used as a back light of an operating section of various electronic apparatuses. The EL sheet generates a stable click feel and is easily processed. A switch employing the EL sheet is also provided. An EL element layer is not formed at a bent section or its vicinity around a root section of a diaphragm. Only conductive patterns, which are coupled to a light-transmissible electrode layer and a back electrode layer respectively, are formed there. Instead of the conductive patterns, insulating film can be exposed there.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.