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:
Jun. 19, 2018
Filed:
Dec. 04, 2015
Fujifilm Corporation, Tokyo, JP;
Yukito Saitoh, Kanagawa, JP;
Katsufumi Ohmuro, Kanagawa, JP;
Akiko Watano, Kanagawa, JP;
Hiroshi Sato, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
An optical sheet member includes a polarizing plate including a polarizer, a brightness enhancement film including a reflection polarizer, and a λ/4 plate, in which the reflection polarizer includes a first light reflecting layer which has a reflection center wavelength range of 430 nm to 480 nm, and is formed by fixing a cholesteric liquid crystalline phase emitting circular polarization light, a second light reflecting layer which has a reflection center wavelength range of 500 nm to 600 nm, and a third light reflecting layer which has a reflection center wavelength range of 600 nm to 650 nm, and both formed by fixing a cholesteric liquid crystalline phase emitting circular polarization light, and the brightness enhancement film includes the λ/4 plate satisfying 550 nm/4−25 nm<Re(550)<550 nm/4+25 nm between the polarizer and the reflection polarizer.