发明名称 |
Light emitting device having singlet and triplet compounds with different emission colors |
摘要 |
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.
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申请公布号 |
US8304985(B2) |
申请公布日期 |
2012.11.06 |
申请号 |
US201113045614 |
申请日期 |
2011.03.11 |
申请人 |
YAMAZAKI SHUNPEI;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
YAMAZAKI SHUNPEI |
分类号 |
H01L51/00;B32B9/00;B32B19/00;H01L27/32;H01L51/30;H05B33/00;H05B33/14 |
主分类号 |
H01L51/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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