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:
Dec. 07, 2010
Filed:
Jul. 10, 2007
Yoshihiko Sano, Shizuoka, JP;
Hideo Nagano, Shizuoka, JP;
Ryuichi Katsumoto, Shizuoka, JP;
Makoto Koike, Shizuoka, JP;
Aya Kuwata, Shizuoka, JP;
Yoshihiko Sano, Shizuoka, JP;
Hideo Nagano, Shizuoka, JP;
Ryuichi Katsumoto, Shizuoka, JP;
Makoto Koike, Shizuoka, JP;
Aya Kuwata, Shizuoka, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The present invention provides an optical functional sheet and a display device that are capable of keeping a given degree or more of front luminance and are capable of substantially reducing brightness nonuniformity. To this end, the optical functional sheet has a base, and prismsarranged in a lattice pattern on at least one surfaceof the base, wherein each of the prismshas two bottoms Lparallel to a first direction D, two first inclined surfaces Sthat are inclined so as to face each other, two bottoms Lparallel to a second direction Dthat is substantially perpendicular to the first direction D, and two second inclined surfaces Sthat are inclined so as to face each other, and the area Sof one of the second inclined surfaces Sto the sum Sof the areas of the two first inclined surfaces S, or the area Sof one of the first inclined surfaces Sto the sum Sof the areas of the two second inclined surfaces Sis more than 0.5 times to 2.5 times or less.