Light-emitting device and its use
US6806641B2 · kind B2 · utility
17Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
Abstract
A light-emitting device having 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 wherein the device has an improved contrast characteristic while keeping high luminance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.