Invention Grant
- Patent Title: Light source and device using electroluminescence element
- Patent Title (中): 光源和使用电致发光元件的器件
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Application No.: US12834275Application Date: 2010-07-12
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Publication No.: US08169137B2Publication Date: 2012-05-01
- Inventor: Hideki Matsukura
- Applicant: Hideki Matsukura
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2009-165396 20090714
- Main IPC: H01J1/62
- IPC: H01J1/62
Abstract:
Deterioration of the whole electroluminescence layer which is caused by moisture penetration through the electroluminescence layer because of a pinhole in an electrode is prevented. A plurality of island-shaped electroluminescence layers is provided. That is, an electroluminescence layer is divided into plural layers. In addition, the plurality of island-shaped electroluminescence layers is interposed between a pair of common electrodes. Accordingly, even when moisture penetrates through one of the island-shaped electroluminescence layers, moisture does not penetrate through another of the island-shaped electroluminescence layers.
Public/Granted literature
- US20110013379A1 LIGHT SOURCE AND DEVICE HAVING THE SAME Public/Granted day:2011-01-20
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