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:
May. 13, 2003
Filed:
Sep. 29, 2000
Mitsuru Tsuchiya, Shinjuku-Ku, JP;
Takahiro Niimi, Shinjuku-Ku, JP;
Abstract
The present invention relates to a hard coat film used for various types of displays, wherein cracking and peeling of the hard coat layer is prevented, hardness reduction of the hard coat film is suppressed and the pencil hardness of the hard coat film is in the range of 4H-8H. The hard coat film includes a buffer layer ( ) with a thickness of 3-50 &mgr;m, formed on at least one side of a plastic base film ( ), which has a buffer function against deformation of the hard coat layer in response to deformation of the plastic base film ( ), and a hard coat layer ( ) with a thickness of 3-15 &mgr;m additionally formed over the buffer layer. The hard coat film ( ) is designed so that the pencil hardness of the plastic base film ( ), the pencil hardness of the buffer layer and the pencil hardness of the hard coat layer increase in that order.