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. 06, 2015
Filed:
Nov. 29, 2010
Hiroyuki Takamiya, Tokyo-to, JP;
Kenji Ueno, Tokyo-to, JP;
Seika Minakoshi, Tokyo-to, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo-to, JP;
Abstract
A touch panel which prevents Newton ring formation and glare, shows high transmission image clarity, prevents haze and has high visibility, and an optical film which is applicable to such a touch panel. An optical film comprising an optically-transparent substrate and at least one hard coat layer (A) disposed on a surface of the optically-transparent substrate, wherein a surface of the hard coat layer (A), which is opposite to a surface where the optically-transparent substrate is present, has an arithmetic mean roughness (Ra) defined in JIS B0601 (1994) of 0.025 to 0.05 μm, and has 10 to 250 convex portions each having a height of 0.3 to 3 μm in a 1.08 mm square area.