Invention Grant
- Patent Title: Organic el element, and organic el display panel including light- emitting layer and functional layer with specific hole and electron mobilities relationship
-
Application No.: US16953370Application Date: 2020-11-20
-
Publication No.: US11700734B2Publication Date: 2023-07-11
- Inventor: Toshiyuki Akiyama , Yasuhiro Sekimoto , Muneharu Sato , Shinichiro Ishino , Tomohiko Oda , Mineki Hasegawa
- Applicant: JOLED Inc.
- Applicant Address: JP Tokyo
- Assignee: JOLED INC.
- Current Assignee: JOLED INC.
- Current Assignee Address: JP Tokyo
- Agency: Xsensus LLP
- Priority: JP 19217515 2019.11.29
- Main IPC: H10K50/11
- IPC: H10K50/11 ; H10K71/00 ; H10K101/40 ; H10K50/16 ; H10K59/35 ; H10K101/30

Abstract:
An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.
Public/Granted literature
- US20210167312A1 ORGANIC EL ELEMENT, ORGANIC EL DISPLAY PANEL, AND ORGANIC EL ELEMENT MANUFACTURING METHOD Public/Granted day:2021-06-03
Information query