Invention Grant
- Patent Title: Organic electroluminescent materials and devices
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Application No.: US16044583Application Date: 2018-07-25
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Publication No.: US11744141B2Publication Date: 2023-08-29
- Inventor: Zhiqiang Ji , Alexey Borisovich Dyatkin , Jui-Yi Tsai , Walter Yeager , Edward Barron
- 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: Duane Morris LLP
- Main IPC: H10K85/30
- IPC: H10K85/30 ; C07F15/00 ; C09K11/06 ; H10K50/11 ; H10K85/40 ; H10K85/60 ; H10K101/10 ; H10K102/10
Abstract:
A compound having the formula [LA]yIr[LB]x is disclosed, where LA is selected from one of the following:
The compounds have at least one pyridyl dibenzo-substituted ligand that coordinates to metal center from the sterically hindered position as exemplified by LA. Because of this unique configuration, the compounds display better photo-physical and thermal properties and can be used in OLED devices to improve their performance, particularly with respect to the device's lifetime.
The compounds have at least one pyridyl dibenzo-substituted ligand that coordinates to metal center from the sterically hindered position as exemplified by LA. Because of this unique configuration, the compounds display better photo-physical and thermal properties and can be used in OLED devices to improve their performance, particularly with respect to the device's lifetime.
Public/Granted literature
- US20190051844A1 ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES Public/Granted day:2019-02-14
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