Patent · US Active

Organic light emitting device

US9312494B2 · kind B2 · utility

1Cited by

4References

9Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Minako Nakasu · Tokyo, JP
Masataka Yashima · Tokyo, JP
Hajime Muta · Zama, JP
Keiji Okinaka · Kawasaki, JP
Tomona Yamaguchi · Moriyama, JP
Tomonari Horikiri · Sagamihara, JP
Maki Okajima · Kawasaki, JP
Naoki Yamada · Tokyo, JP

Key dates

Filing date	Dec 2, 2010
Grant date	Apr 12, 2016
Priority date	—
Expiry date	Oct 5, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH10K2102/103
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.