公开(公告)号：US09829615B2

公开(公告)日：2017-11-28

申请号：US15052312

申请日：2016-02-24

Applicant: FUJIFILM Corporation

Inventor： Akiko Watano ,  Yukito Saitoh ,  Katsufumi Ohmuro ,  Mitsuyoshi Ichihashi ,  Hiroyuki Ishikawa ,  Kotaro Yasuda ,  Hideyuki Nishikawa ,  Yuki Matsuda ,  Wataru Hoshino

IPC: G02B5/30 ,  G02B5/26 ,  G02F1/1335 ,  G02F1/13363

CPC classification number: G02B5/3041 ,  G02B5/26 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/133603 ,  G02F1/133621 ,  G02F1/13363 ,  G02F1/133634 ,  G02F2001/133543 ,  G02F2001/133614 ,  G02F2001/133638

Abstract: The present invention provides a luminance-enhancing film including a λ/4 plate, and a reflection polarizer, including a first light reflection layer, a second light reflection layer, and a third light reflection layer from the λ/4 plate side sequentially, the light reflection layers being light reflection layers formed by fixing a cholesteric liquid crystalline phase, and including blue, green and red light reflection layers, and Rth(550) of the first light reflection layer and Rth(550) of the second light reflection layer having inverse signs; and a luminance-enhancing film including a λ/4 plate and a reflection polarizer including at least a light reflection layer formed of a rod-like cholesteric liquid crystal material and a light reflection layer formed of a disk-like cholesteric liquid crystal material. The luminance-enhancing film has high luminance and is able to suppress an oblique change in the color.

公开(公告)号：US10001674B2

公开(公告)日：2018-06-19

申请号：US15231057

申请日：2016-08-08

Applicant: FUJIFILM Corporation

Inventor： Jun Takeda ,  Yuki Matsuda ,  Nobuyuki Akutagawa ,  Kotaro Yasuda ,  Katsufumi Ohmuro ,  Hideyuki Nishikawa ,  Akiko Watano ,  Yukito Saitoh ,  Mitsuyoshi Ichihashi ,  Wataru Hoshino ,  Hiroyuki Ishikawa

IPC: G02F1/1333 ,  G02F1/13363 ,  B29D11/00 ,  G02B5/30 ,  C09K19/18 ,  C09K19/20 ,  C09K19/36 ,  C09K19/38 ,  C09K19/50 ,  G02F1/1337 ,  C09K19/24 ,  C09K19/34 ,  C09K19/54 ,  C09K19/56 ,  C09K19/60 ,  G02F1/1335 ,  C09K19/04

CPC classification number: G02F1/13363 ,  B29D11/00644 ,  B29D11/00788 ,  C09K19/18 ,  C09K19/2007 ,  C09K19/2014 ,  C09K19/24 ,  C09K19/3486 ,  C09K19/36 ,  C09K19/3823 ,  C09K19/3852 ,  C09K19/50 ,  C09K19/544 ,  C09K19/56 ,  C09K19/601 ,  C09K2019/0429 ,  C09K2019/0448 ,  C09K2019/188 ,  C09K2019/2078 ,  C09K2019/3408 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/133602 ,  G02F1/133615 ,  G02F1/133617 ,  G02F1/13362 ,  G02F1/133621 ,  G02F1/133784 ,  G02F1/133788 ,  G02F2001/133507 ,  G02F2001/133545 ,  G02F2001/133614 ,  G02F2001/133638 ,  G02F2202/022 ,  G02F2202/36 ,  G02F2203/05 ,  G02F2413/01 ,  G02F2413/05

Abstract: Provided are a brightness enhancement film including a λ/4 plate, and a reflection polarizer, in which the reflection polarizer includes at least two light reflection layers formed by immobilizing a cholesteric liquid crystalline phase, one light reflection layer of the reflection layers is a layer formed of a polymerizable liquid crystal composition containing a rod-like liquid crystal compound, and the other light reflection layer is a layer formed of a polymerizable liquid crystal composition containing a disk-like liquid crystal compound, and an optical sheet member including the brightness enhancement film, and a liquid crystal display device including the optical sheet member. The brightness enhancement film of the present invention has high brightness and is able to suppress an oblique change in the shade at the time of being incorporated in a liquid crystal display device.