Invention Grant
- Patent Title: Lighting device including first electrode, second electrode, light emitting layer therebetween and third electrode connected to the first electrode through opening in the second electrode and the light emitting layer
- Patent Title (中): 照明装置，包括第一电极，第二电极，发光层和通过第二电极中的开口连接到第一电极的第三电极和发光层
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Application No.: US11120999Application Date: 2005-05-04
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Publication No.: US07692199B2Publication Date: 2010-04-06
- Inventor: Yasuyuki Arai
- Applicant: Yasuyuki Arai
- Applicant Address: unknown Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd
- Current Assignee Address: unknown Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2004-152365 20040521
- Main IPC: H01L27/15
- IPC: H01L27/15
Abstract:
An object of the invention is to provide a lighting device which can suppress luminance nonuniformity in a light emitting region when the lighting device has large area. A layer including a light emitting material is formed between a first electrode and a second electrode, and a third electrode is formed to connect to the first electrode through an opening formed in the second electrode and the layer including a light emitting material. An effect of voltage drop due to relatively high resistivity of the first electrode can be reduced by electrically connecting the third electrode to the first electrode through the opening.
Public/Granted literature
- US20050258436A1 Lighting device Public/Granted day:2005-11-24
Information query
IPC分类:
