Light-emitting device and its use
US7208868B2 · kind B2 · utility
12Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | May 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
A light-emitting device comprises a layer including an emission region and provided between an anode and a cathode wherein the anode has a visible light (with a wavelength of 380 to 780 nm) transmittance ranging from 35 to 75%, and the anode has a work function of 3.0 to 7.0 eV whereby the device has an improved contrast characteristic while keeping high luminance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.