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.: US13742600Application Date: 2013-01-16
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Publication No.: US09029842B2Publication Date: 2015-05-12
- 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 ; H01L51/56 ; H01L27/32

Abstract:
An organic light-emitting element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode; and a hole injection layer between the anode and the functional layer. The functional layer includes at least a light-emitting sublayer defined by the banks and that contains an organic material. The hole injection layer comprises tungsten oxide and includes a crystal of the tungsten oxide, whose particle diameter is on an order of nanometers. 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 has a surface facing the functional layer, and a portion of the surface overlapping with the light-emitting sublayer is located closer to the anode than other portions, thereby forming a recessed structure having a recessed portion whose inner surface is in contact with the functional layer.
Public/Granted literature
- US20130126848A1 ORGANIC ELECTROLUMINESCENCE ELEMENT AND METHOD OF MANUFACTURING THEREOF Public/Granted day:2013-05-23
Information query
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