Invention Grant
- Patent Title: OLED device having enhancement layer(s)
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Application No.: US17354038Application Date: 2021-06-22
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Publication No.: US11569481B2Publication Date: 2023-01-31
- Inventor: Nicholas J. Thompson , Marc A. Baldo , Michael S. Weaver , Vinod M. Menon
- Applicant: Universal Display Corporation
- Applicant Address: US NJ Ewing
- Assignee: Universal Display Corporation
- Current Assignee: Universal Display Corporation
- Current Assignee Address: US NJ Ewing
- Agency: Butzel Long
- Main IPC: H01L51/52
- IPC: H01L51/52 ; H01L51/50

Abstract:
An OLED is disclosed that includes an enhancement layer having optically active metamaterials, or hyperbolic metamaterials, which transfer radiative energy from the organic emissive material to a non-radiative mode, wherein the enhancement layer is disposed over the organic emissive layer opposite from the first electrode, and is positioned no more than a threshold distance away from the organic emissive layer, wherein the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer, and the threshold distance is where the total non-radiative decay rate constant is equal to the total radiative decay rate constant; and an outcoupling layer disposed over the enhancement layer, wherein the outcoupling layer scatters radiative energy from the enhancement layer to free space.
Public/Granted literature
- US20210313545A1 OLED DEVICE HAVING ENHANCEMENT LAYER(S) Public/Granted day:2021-10-07
Information query
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