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:
Mar. 23, 2021
Filed:
Sep. 22, 2017
Nitto Denko Corporation, Ibaraki, JP;
Takehito Fuchida, Ibaraki, JP;
Hiroaki Fumoto, Ibaraki, JP;
Katsunori Takada, Ibaraki, JP;
Yoshitsugu Kitamura, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki, JP;
Abstract
There is provided an optical laminate that can achieve a liquid crystal display apparatus in which the occurrence of moire is suppressed, and which is excellent in brightness and viewing angle characteristic. An optical laminate of the present invention includes in the stated order: a polarizer; a light-diffusing pressure-sensitive adhesive layer; a matte layer; and a louver layer. The louver layer has light-transmitting portions each having a trapezoidal section arrayed along a film plane, and light-absorbing portions each having a trapezoidal section arrayed between the light-transmitting portions. A haze value H of the light-diffusing pressure-sensitive adhesive layer and a bias angle B of the louver layer satisfy relationships represented by the following expressions (1) to (3):2≤≤6  (1)20≤≤60  (2)≥40  (3)where the bias angle means a tilt angle of each of the trapezoidal sections with respect to a normal direction.