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:
Apr. 17, 2018
Filed:
Feb. 23, 2016
Fujifilm Corporation, Tokyo, JP;
Ryuji Saneto, Kanagawa, JP;
Katsufumi Ohmuro, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A liquid crystal display device improved in front surface luminance, having a backlight unit, a light conversion member, a polarization separating member, a liquid crystal cell, and a display-side polarizer; the backlight unit includes an unpolarized blue light source and a reflection member that converts circularly-polarized to unpolarized blue light and reflects same; the light conversion member includes a circularly polarized luminescence fluorescent material that emits green and red lights which are circularly-polarized; the polarization separating member includes a reflection polarizer that separates the unpolarized blue light into blue transmitted light that is right- or left-circularly-polarized light and blue reflected light that is the other circularly-polarized light and a λ/4 plate that converts the blue transmitted light, the green and red lights, which are circularly-polarized, to linearly-polarized lights; and an absorption axis of the display-side polarizer is parallel to vibration directions of the blue, green and red lights, which are linearly-polarized.