公开(公告)号：US20230072725A1

公开(公告)日：2023-03-09

申请号：US17800137

申请日：2021-02-04

Applicant: NITTO DENKO CORPORATION

Inventor： Shinya YAMAMOTO ,  Tomohiro YAMASHITA ,  Sho TAKARADA ,  Takahiro NONAKA ,  Katsunori TAKADA ,  Yusuke TOYAMA

IPC: G02B5/30 ,  G02B7/00 ,  G02B1/14

Abstract: A polarizing film having a pressure-sensitive adhesive layer, said polarizing film comprising a polarizer film and a first transparent protective film, wherein a first pressure-sensitive adhesive layer is provided on the first transparent protective film side of the polarizing film. The polarizer film has a film thickness of 20 μm or less; the first pressure-sensitive adhesive layer is used for the bonding of a front transparent member that is arranged at the viewing side of an image display device, while having a difference between the saturation moisture percentage (A) at 80° C. at 85% R.H. and the saturation moisture percentage (B) at 25° C. at 50% R.H., namely ((A)−(B)) of 1.0% by weight or more. This polarizing film having a pressure-sensitive adhesive layer is able to suppress decrease in the single transmittance of the polarizing film in a high temperature environment.

公开(公告)号：US20210048570A1

公开(公告)日：2021-02-18

申请号：US16976560

申请日：2019-02-28

Applicant: NITTO DENKO CORPORATION

Inventor： Tetsuro TAKEDA ,  Katsunori TAKADA ,  Keisuke KIMURA ,  Tomohiro YAMASHITA ,  Yoichiro SUGINO ,  Eiko SUEFUSA ,  Akinori IZAKI

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/13363 ,  H01L27/32 ,  H01L51/52 ,  G06F3/044 ,  B60K35/00

Abstract: The reinforced polarizing optical film laminate comprises a polarizing film laminate containing an iodine concentration for the polarizing film and a water content for the polarizing film laminate which fall within a region surrounded, in an x-y orthogonal coordinate system in which the iodine concentration of the polarizing film is plotted on the x-axis, and the water content of the polarizing film laminate is plotted on the y-axis, by: a first line segment connecting a first point and a second point; a second line segment connecting the second point and a third point; a third line segment connecting the third point and a fourth point; a fourth line segment connecting the fourth point and a fifth point; and a fifth line segment connecting the first point and the fifth point, wherein the reinforced film laminate has a breaking strength in a MD direction of 135 N/10 mm or more.