Invention Grant
- Patent Title: Organic electroluminescence device
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Application No.: US16563025Application Date: 2019-09-06
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Publication No.: US11302875B2Publication Date: 2022-04-12
- Inventor: Jicheol Shin , Seonkeun Yoo , Sangbeom Kim , Soyoung Jang , Heejun Park
- 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: KR10-2018-0117127 20181001
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; H01L51/52

Abstract:
Disclosed is an organic electroluminescence device including an anode, a cathode, at least two light-emission sub-stacks and a charge generation layer. The charge generation layer is located between the light-emission sub-stacks, and the charge generation layer includes a stack of a n-type charge generation layer and a p-type charge generation layer. The n-type charge generation layer includes a Compound of Formula 1 and a Compound of Formula 2. The present organic electroluminescence device improves injection and transport properties of electrons to lower driving voltage of the device, improves efficiency and lifespan of the device, and has excellent thermal/electrical stability for long driving duration of the device.
Information query
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