Invention Grant
- Patent Title: Light emitting element provided with organic conductive and inorganic hole transport layers between an electrode and organic emissive layer
- Patent Title (中): 在电极和有机发光层之间设置有有机导电和无机空穴传输层的发光元件
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Application No.: US11202891Application Date: 2005-08-12
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Publication No.: US07755278B2Publication Date: 2010-07-13
- Inventor: Ryoji Nomura , Tsunenori Suzuki , Satoshi Seo
- Applicant: Ryoji Nomura , Tsunenori Suzuki , Satoshi Seo
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Husch Blackwell Sanders LLP
- Priority: JP2004-244803 20040825
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/52

Abstract:
A light emitting element with reduced inconvenience due to dust or the like and a manufacturing method thereof. One feature of the invention is a light emitting element having a first layer provided so as to be in contact with a first electrode, and a second layer provided so as to be in contact with the first layer, between the first electrode and a second electrode. A light emitting layer exists between the second layer and the second electrode. The first electrode, the second electrode, the first layer, the second layer, and the light emitting layer are stacked so that the first layer is formed in advance compared with the second layer. Here, the first layer is a layer containing an organic compound. Especially, an organic compound having conductivity is preferable among organic compounds. Alternatively, the second layer is a layer containing an inorganic compound. In particular, an inorganic compound having hole transport property is preferable among inorganic compounds.
Public/Granted literature
- US20060046096A1 Light emitting element and light emitting device using the same Public/Granted day:2006-03-02
Information query
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