Alerting system using elastomeric EL lamp structure
US6271631A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jan 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An elastomeric electroluminescent (EL) lamp is provided wherein an electroluminescent system, advantageously monolithic, is provided in an elastomeric structure. As a result, the lamp is thin, pliable and membrane-like. A first envelope layer is applied advantageously by screen printing to transfer release paper. An EL system is then applied, again advantageously by screen printing to the first envelope layer, and then a second envelope layer is applied to seal the EL system within the envelope. Appropriate windows are cut or left open to allow electrical contact with the EL system. An optional adhesive layer then may be applied if the lamp is to be used in transfer form for later affixation to a substrate. Alternatively, the lamp may be used as a self-contained membraneous component installed in another product such as a telephone handset. When used on a telephone, several addressable lamp segments may be deployed on the case of the telephone and caused to emit a visual alert when, for example, the telephone rings. This visual alert may then, if desired, be synchronized with an audible alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.