Invention Grant
- Patent Title: Organic light emitting display device
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Application No.: US14097675Application Date: 2013-12-05
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Publication No.: US11005061B2Publication Date: 2021-05-11
- Inventor: Ki-Woog Song , Chang-Wook Han , Hong-Seok Choi , Sung-Hoon Pieh , Jeong-Dae Seo , Seok-Joon Oh , Youn-Seok Kam
- 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: Seed IP Law Group LLP
- Priority: KR10-2012-0158195 20121231,KR10-2013-0062631 20130531
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/52 ; H01L27/32

Abstract:
An organic light emitting display device includes a first electrode and a second electrode disposed on a substrate opposite to each other, a first stack including a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode, a second stack including a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode, and a charge generation layer disposed between the first stack and the second stack and including an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks. The P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer.
Public/Granted literature
- US20140183475A1 ORGANIC LIGHT EMITTING DISPLAY DEVICE Public/Granted day:2014-07-03
Information query
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