Organic electroluminescent device and display
US7358661B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 2004 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | May 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/19
Abstract
An organic EL device and a display with excellent viewing-angle properties and high efficiency are provided. An organic electroluminescent device (1) comprising: a transparent electrode (12), a counter electrode (14) arranged opposite to the transparent electrode (12), one or more intermediate conductive layers (30, 32 and 34) and one or more organic emitting layers (20, 22, 24 and 26) arranged between the transparent electrode (12) and the counter electrode (14), wherein the difference between na and nb is 0.2 or less when na is the refractive index of the intermediate conductive layer (30) and nb is the refractive index of the organic emitting layer (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.