- Patent Title: Organic EL device as well as display apparatus, image pickup apparatus, communication apparatus, lighting apparatus, luminaire, and moving body each including the same
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Application No.: US17139848Application Date: 2020-12-31
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Publication No.: US11997858B2Publication Date: 2024-05-28
- Inventor: Hirokazu Miyashita , Itaru Takaya , Takayuki Ito , Moe Takahira , Tomona Yamaguchi , Satoru Shiobara , Tomokazu Kotake , Haruna Iida , Naoki Yamada , Jun Kamatani
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: CANON U.S.A., INC. IP Division
- Priority: JP 18128017 2018.07.05 JP 19117143 2019.06.25
- Main IPC: H10K50/11
- IPC: H10K50/11 ; F21S43/145 ; H04N23/53 ; H10K50/13 ; H10K50/19 ; H10K59/12 ; H10K77/10 ; H10K85/60 ; H10K101/30 ; H10K101/40 ; H10K102/00
Abstract:
An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.
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