Invention Grant
US08304985B2 Light emitting device having singlet and triplet compounds with different emission colors
有权
具有不同发射颜色的单线态和三线态化合物的发光器件
- Patent Title: Light emitting device having singlet and triplet compounds with different emission colors
- Patent Title (中): 具有不同发射颜色的单线态和三线态化合物的发光器件
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Application No.: US13045614Application Date: 2011-03-11
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Publication No.: US08304985B2Publication Date: 2012-11-06
- Inventor: Shunpei Yamazaki
- Applicant: Shunpei Yamazaki
- 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: JP2000-168325 20000605
- Main IPC: H01L51/00
- IPC: H01L51/00
Abstract:
There is provided a light emitting device which enables a color display with good color balance. A triplet compound is used for a light emitting layer of an EL element that emits red color, and a singlet compound is used for a light emitting layer of an EL element that emits green color and a light emitting layer of an EL element that emits blue color. Thus, an operation voltage of the EL element emitting red color may be made the same as the EL element emitting green color and the EL element emitting blue color. Accordingly, the color display with good color balance can be realized.
Public/Granted literature
- US20110156580A1 LIGHT EMITTING DEVICE Public/Granted day:2011-06-30
Information query
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