Invention Grant
- Patent Title: Top-emission type organic electroluminescent element and top-emission type organic electroluminescent device
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Application No.: US17315482Application Date: 2021-05-10
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Publication No.: US11641755B2Publication Date: 2023-05-02
- Inventor: Qizhe Cai , Yuanyuan Qi
- Applicant: Xianyang Caihong Optoelectronics Technology Co.,Ltd
- Applicant Address: CN Xianyang
- Assignee: Xianyang Caihong Optoelectronics Technology Co.,Ltd
- Current Assignee: Xianyang Caihong Optoelectronics Technology Co.,Ltd
- Current Assignee Address: CN Xianyang
- Agency: WPAT, P.C
- Priority: CN202010700423.X 20200720
- Main IPC: H01L51/52
- IPC: H01L51/52

Abstract:
A top-emission type organic electroluminescent (EL) element and a top-emission type organic EL device are provided. The top-emission type organic EL element includes a first electrode, an organic functional layer disposed on the first electrode, and a second electrode disposed on a side of the organic functional layer facing away from the first electrode. The second electrode includes a work-function adjustment layer and a transparent metal oxide layer. The work-function adjustment layer is disposed on the side of the organic functional layer facing away from the first electrode, and the transparent metal oxide layer is disposed on a side of the work-function adjustment layer facing away from the organic functional layer. The top-emission type organic EL element and the top-emission type organic EL device can improve the luminous efficiency and prolong the service life.
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