The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 18, 2011

Filed:

Nov. 03, 2009
Applicants:

Naoaki Sakurai, Kanagawa-ken, JP;

Junsei Yamabe, Kanagawa-ken, JP;

Hiroshi Koizumi, Kanagawa-ken, JP;

Inventors:

Naoaki Sakurai, Kanagawa-ken, JP;

Junsei Yamabe, Kanagawa-ken, JP;

Hiroshi Koizumi, Kanagawa-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
Abstract

In a fluorescer solution, a plurality of types of fluorescent particles are contained in a resin liquid. Average particle sizes of these fluorescent particles decrease as densities of the types increase. In other words, average settling rates vof the types of the fluorescent particles ascertained by are equal to each other, where Dis an average particle size of each of the types of fluorescent particles, pis a density of each of the types of fluorescent particles, pis a density of the resin liquid, η is a viscosity of the resin liquid, g is the acceleration due to gravity, and vis an average settling rate of each of the types of fluorescent particles.


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