Invention Grant
- Patent Title: Organic electroluminescence element and method of manufacturing thereof
- Patent Title (中): 有机电致发光元件及其制造方法
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Application No.: US13742584Application Date: 2013-01-16
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Publication No.: US09048448B2Publication Date: 2015-06-02
- Inventor: Kenji Harada , Seiji Nishiyama , Takahiro Komatsu , Takayuki Takeuchi , Shinya Fujimura , Satoru Ohuchi , Hirofumi Fujita , Yoshiaki Tsukamoto
- Applicant: PANASONIC CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JOLED INC.
- Current Assignee: JOLED INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L27/32 ; H01L51/52

Abstract:
An organic EL element comprises: an anode; a cathode; a functional layer including at least a light-emitting layer; a hole injection layer disposed between the anode and the functional layer; and a bank. The hole injection layer contains 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 is on an order of nanometers. The hole injection layer has a recessed portion whose inner side surface has an upper edge that is one of (i) aligned with part of a lower edge of the bank, the part being in contact with the light-emitting layer, and (ii) in contact with a bottom surface of the bank.
Public/Granted literature
- US20130140542A1 ORGANIC ELECTROLUMINESCENCE ELEMENT AND METHOD OF MANUFACTURING THEREOF Public/Granted day:2013-06-06
Information query
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