Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuki Nishimura0
Masaki Numata0
Chishio Hosokawa0
Hideaki Nagashima0
Hitoshi Kuma0
Date of Patent
March 24, 2015
0Patent Application Number
137026250
Date Filed
June 8, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An organic electroluminescence device (1) includes: an anode (3); a cathode (4); and an emitting layer (5) provided between the anode (3) and the cathode (4). The emitting layer contains a first host, a second host and a phosphorescent dopant. A triplet energy of each of the first host and the second host is 2.8 eV or more. An ionization potential of the first host is 5.5 eV or less. An affinity Af1 of the first host is smaller than an affinity Af2 of the second host.
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