Invention Grant
- Patent Title: Organic electroluminescence device
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Application No.: US16582911Application Date: 2019-09-25
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Publication No.: US12232418B2Publication Date: 2025-02-18
- Inventor: Hyeseung Kang , Dohan Kim , Jungkeun Kim , Seungryong Joung , Ki-Woog Song , Jungsoo Park , Seongsu Jeon , Taewoo Jeon
- Applicant: LG DISPLAY CO., LTD.
- Applicant Address: KR Seoul
- Assignee: LG DISPLAY CO., LTD.
- Current Assignee: LG DISPLAY CO., LTD.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2018-0117700 20181002
- Main IPC: H10K85/60
- IPC: H10K85/60 ; H10K50/11 ; H10K50/13 ; H10K101/00 ; H10K101/10 ; H10K102/00

Abstract:
An organic electroluminescence device including an anode, a cathode and a light-emission layer. The light-emission layer includes a stack of a blue light-emission layer and a red/green light concurrent-emission sub-stack. Further, the red/green light concurrent-emission sub-stack includes a stack of a red light-emission layer and a green light-emission layer. The red light-emission layer contains a red host compound including an arylamino group-substituted spirobisfluorene compound. Further, the green light-emission layer contains a green host compound including a mixture between a first green host compound and a second green host compound. Also, the first green host compound includes a bis-carbazole based compound, and the second green host compound includes a carbazole-based compound.
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