07339317 is referenced by 44 patents and cites 32 patents.

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.

Title
Light-emitting device having triplet and singlet compound in light-emitting layers
Application Number
9/871805
Publication Number
7339317 (B2)
Application Date
June 4, 2001
Publication Date
March 4, 2008
Inventor
Shunpei Yamazaki
Tokyo
JP
Agent
Fish & Richardson P C
Assignee
Semiconductor Energy Laboratory
JP
IPC
H01J 1/62
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