07400087 is referenced by 36 patents and cites 64 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
11/105414
Publication Number
7400087 (B2)
Application Date
April 14, 2005
Publication Date
July 15, 2008
Inventor
Shunpei Yamazaki
Tokyo
JP
Agent
Fish & Richardson P C
Assignee
Semiconductor Energy Laboratory
JP
IPC
H01L 51/00
View Original Source