Thin-film electroluminescent element
US5635307A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1993 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin-film EL element having as a laminated luminescent composite a configuration comprising at least a first layer and a second layer wherein PA1 (1) the first layer comprises a compound having a lattice constant, before lamination, larger than that of a compound constituting the second layer, and contains manganese as a luminescent center impurity, PA1 (2) the difference between the lattice constant, before lamination, of the compound of the first layer and the compound constituting the second layer is 5% or more, and PA1 (3) the peak value of the emission spectrum of the laminated luminescent composite rests on 590 nm or more, whereby the thin-film EL element can provide red light having high color purity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.