Invention Grant
- Patent Title: Organic EL element
- Patent Title (中): 有机EL元件
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Application No.: US13739363Application Date: 2013-01-11
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Publication No.: US08999832B2Publication Date: 2015-04-07
- Inventor: Seiji Nishiyama , Satoru Ohuchi , Takahiro Komatsu , Kei Sakanoue , Yoshiaki Tsukamoto , Shinya Fujimura
- Applicant: Panasonic Corporation
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Main IPC: H01L33/60
- IPC: H01L33/60 ; H01L51/50 ; H01L51/52 ; H01L51/56

Abstract:
An organic electroluminescent (EL) element comprises: an anode; a cathode; a functional layer disposed between the anode and the cathode, and including a light-emitting layer containing an organic material; a hole injection layer disposed between the anode and the functional layer; and a bank that defines an area in which the light-emitting layer is to be formed, wherein the hole injection layer includes tungsten oxide and includes an occupied energy level that is approximately 1.8 electron volts to approximately 3.6 electron volts lower than a lowest energy level of a valence band of the hole injection layer in terms of a binding energy, the hole injection layer has a recess in an upper surface of the area defined by the bank, and an upper peripheral edge of the recess is covered with a part of the bank.
Public/Granted literature
- US20130126841A1 ORGANIC EL ELEMENT Public/Granted day:2013-05-23
Information query
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