Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating
Reexamination Certificate
2005-03-02
2009-06-23
Meeks, Timothy H (Department: 1792)
Coating processes
Electrical product produced
Fluorescent or phosphorescent base coating
C427S070000, C427S384000, C427S427400
Reexamination Certificate
active
07550173
ABSTRACT:
Disclosed are a luminescent device and electric appliance which have low power consumption and a long life. An organic luminescent element is provided by a scheme that a region204bwhere the concentrations of first and second organic compounds change gradually is provided in the organic compound layer203b, a region201bwhere the first organic compound can express its function is formed, and a region202bwhere the second organic compound can express its function is formed. Thereby the functions of the individual materials are allowed to express. This scheme provides an organic luminescent element which has low power consumption and a long life. A luminescent device and electric appliance are manufactured by using the organic luminescent element.
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Seo Satoshi
Yamazaki Shunpei
Fish & Richardson P.C.
Lin Jimmy
Meeks Timothy H
Semiconductor Energy Laboratory Co,. Ltd.
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