Invention Application
- Patent Title: ORGANIC LIGHT-EMITTING DEVICE INCLUDING MULTI-LAYERED HOLE TRANSPORT LAYER, AND ORGANIC LIGHT-EMITTING DISPLAY APPARATUS INCLUDING THE SAME
- Patent Title (中): 有机发光装置，包括多层孔输送层，有机发光显示装置，包括它们
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Application No.: US13682076Application Date: 2012-11-20
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Publication No.: US20140001444A1Publication Date: 2014-01-02
- Inventor: Hyoung-Kun KIM , Sam-Il KHO , Mie-Hwa PARK , Yoon-Hyun KWAK , Ja-Hyun IM , Chang-Woong CHU , Kwan-Hee LEE
- Applicant: Hyoung-Kun KIM , Sam-Il KHO , Mie-Hwa PARK , Yoon-Hyun KWAK , Ja-Hyun IM , Chang-Woong CHU , Kwan-Hee LEE
- Priority: KR10-2012-0069476 20120627
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L27/32
Abstract:
An organic light-emitting device includes an emission layer between first and second electrodes, a first hole transport layer that is between the emission layer and the first electrode and that includes a first hole transport compound and a first electron acceptor, a second hole transport layer that is between the emission layer and first hole transport layer and that includes a second hole transport compound, a third hole transport layer that is between the emission layer and the second hole transport layer and that includes a third hole transport compound and a second electron acceptor, a fourth hole transport layer that is between the emission layer and the third hole transport layer and that includes a fourth hole transport compound, a buffer layer between the emission layer and the fourth hole transport layer, and an electron transport layer that includes a pyrimidine-based compound.
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