Organic electroluminescent device and display unit
US6916552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2002 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
An organic electroluminescent device capable of blue emission with a high color purity, and a display unit capable of full-color display with high color expressivity by using the organic electroluminescent device are provided. The organic electroluminescent device includes at least a hole transportation layer and a luminescent layer held between a lower electrode to become an anode and an upper electrode to become a cathode in a state of lamination in that order from the anode side. The luminescent layer is made of a spiro compound, and the hole transportation layer is made of triphenylamine tetramer. Furthermore, the display unit includes organic electroluminescent devices as blue-emitting elements arrayed for a plurality of pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.