Invention Grant
- Patent Title: Organic EL element and production method for same
- Patent Title (中): 有机EL元件及其制作方法相同
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Application No.: US13740348Application Date: 2013-01-14
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Publication No.: US08927976B2Publication Date: 2015-01-06
- Inventor: Seiji Nishiyama , Satoru Ohuchi , Takahiro Komatsu , Yoshiaki Tsukamoto , Shinya Fujimura , Hirofumi Fujita
- 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: H01L51/50
- IPC: H01L51/50 ; H01L51/52 ; H01L51/56

Abstract:
An organic EL element includes a hole injection layer yielding excellent hole conduction efficiency, and comprises: an anode; a cathode; a functional layer disposed between the anode and the cathode, and including a light-emitting layer containing organic material; the hole injection layer disposed between the anode and the functional layer; and a bank defining an area in which the light-emitting layer is to be formed, wherein the hole injection layer includes tungsten oxide, tungsten atoms constituting the tungsten oxide include both tungsten atoms with a valence of six and tungsten atoms with a valence less than six, the hole injection layer includes a crystal of the tungsten oxide, a particle diameter of the crystal being on an order of nanometers, an inner portion of the hole injection layer is depressed to define a recess, and an upper peripheral edge of the recess is covered with a part of the bank.
Public/Granted literature
- US20130126843A1 ORGANIC EL ELEMENT AND PRODUCTION METHOD FOR SAME Public/Granted day:2013-05-23
Information query
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