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.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Dec. 19, 2011
Kaoru Okaniwa, Tsukuba, JP;
Taku Sawaki, Tsukuba, JP;
Takeshi Yamashita, Tsukuba, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
The present invention provides a wavelength conversion-type photovoltaic cell sealing material, the sealing material including at least one light emitting layer containing a group of spherical phosphors, the group of spherical phosphors having a ratio of a median value Dof the group of spherical phosphors to a total thickness t of the light emitting layer of from 0.1 to 1.0, where the median value Dis a median value of a volume particle size distribution of the group of spherical phosphors, and an integrated value N of a number particle size distribution from Dto Dof the group of spherical phosphors being 5% or more, when Dis a particle size value at 25% of an integrated value of the volume particle size distribution of the group of spherical phosphors and Dis a particle size value at 75% of the integrated value of the volume particle size distribution of the group of spherical phosphors; and a photovoltaic cell module including the sealing material.