公开(公告)号：US09417477B2

公开(公告)日：2016-08-16

申请号：US14605163

申请日：2015-01-26

Applicant: FUJIFILM Corporation

Inventor： Ryuji Saneto ,  Fumitake Mitobe

IPC: G02F1/1335 ,  G02B1/14 ,  G02B1/10 ,  G02B5/30

CPC classification number: G02F1/133528 ,  G02B1/10 ,  G02B1/105 ,  G02B1/14 ,  G02B5/3033 ,  G02F2001/133565 ,  G02F2201/50 ,  Y10T428/269

Abstract: There is provided a polarizing plate including a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a synthetic polymer, and has a thickness of 30 μm or less, an elastic modulus in the TD direction of 2 GPa to 2.5 GPa, and a humidity dimensional change rate in a TD direction of 0.1% or less, and the second protective film has an evaluation value represented by the following Equation (2) of 7.0 to 11.0: Evaluation value=elastic modulus (GPa) of the second protective film in a TD direction/humidity dimensional change rate (%) of the second protective film in the TD direction×(thickness (μm) of the second protective film/thickness (μm) of the first protective film)2×(30/thickness (μm) of the polarizer)1/2 Equation (2).

Abstract translation: 提供了包括第一保护膜，偏振片和第二保护膜的偏振片，其中第一保护膜是包括合成聚合物的膜，并且具有30μm或更小的厚度，弹性 TD方向的模量为2GPa至2.5GPa，TD方向的湿度尺寸变化率为0.1％以下，第二保护膜具有由下式（2）表示的评价值为7.0〜11.0： 评估值= TD方向上的第二保护膜的弹性模量（GPa）/第二保护膜的TD方向的湿度尺寸变化率（％）×（第二保护膜的厚度（μm）/厚度（μm） 的第一保护膜）2×（30 /偏振片的厚度（μm））1/2等式（2）。

公开(公告)号：US12153236B2

公开(公告)日：2024-11-26

申请号：US17697558

申请日：2022-03-17

Applicant: FUJIFILM Corporation

Inventor： Yasukazu Kuwayama ,  Fumitake Mitobe ,  Yuzo Fujiki ,  Jun Takeda

IPC: G02B5/30 ,  C09K19/56 ,  G02F1/1335 ,  G09F13/00 ,  H10K50/86

Abstract: Provided is a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.

公开(公告)号：US12085746B2

公开(公告)日：2024-09-10

申请号：US17583433

申请日：2022-01-25

Applicant: FUJIFILM Corporation

Inventor： Fumitake Mitobe ,  Keisuke Kodama ,  Katsumi Sasata ,  Yukito Saitoh

IPC: F21V8/00 ,  G02B5/18

CPC classification number: G02B6/0055 ,  G02B5/1833 ,  G02B6/0025

Abstract: Provided are a backlight unit and a liquid crystal display device including the backlight unit, the backlight unit being capable of switching between viewing angles in the liquid crystal display device and having a configuration in which the brightness values of emitted light on the “+” side and the “−” side at a polar angle with respect to the normal line are symmetric to each other. The backlight unit includes: a light guide plate; a first light source that guides light into the light guide plate from a long side or a short side of the light guide plate; a second light source that guides light into the light guide plate from a side of the light guide plate different from that of the first light source; a first diffraction element that is provided on one main surface of the light guide plate and diffracts only light emitted from one of the first light source or the second light source; a second diffraction element that is provided on another main surface of the light guide plate and diffracts only light emitted from another one of the first light source or the second light source; and a reflection plate that is provided on a surface of the light guide plate opposite to a light emission surface.

公开(公告)号：US11789190B2

公开(公告)日：2023-10-17

申请号：US17901476

申请日：2022-09-01

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi Yamada ,  Shinichi Yoshinari ,  Fumitake Mitobe

IPC: G02F1/1335 ,  G02B5/30 ,  C09K19/38 ,  C09K19/56 ,  G02F1/13

CPC classification number: G02B5/3016 ,  C09K19/3861 ,  C09K19/56 ,  G02F1/1323 ,  G02F1/133531

Abstract: Provided is a viewing angle control polarizing plate that has asymmetric transmission characteristics, does not cause moire even in a case of being used in combination with a high-definition image display device, and is capable of easily following a curved surface and a viewing angle control system with high productivity. The viewing angle control system includes at least a first polarizer and an optically anisotropic layer, in which an absorption axis of the first polarizer forms an angle of 45° or greater with respect to an in-plane direction, and a main axis of a refractive index of the optically anisotropic layer is tilted in the in-plane direction.

公开(公告)号：US11768324B2

公开(公告)日：2023-09-26

申请号：US17848105

申请日：2022-06-23

Applicant: FUJIFILM Corporation

Inventor： Fumitake Mitobe ,  Naoya Nishimura ,  Takashi Katou ,  Naoya Shibata

IPC: G02B5/30 ,  F21V8/00

CPC classification number: G02B5/3016 ,  G02B6/0056 ,  G02B6/0076

Abstract: Provided is a light absorption anisotropic layer including a dichroic substance, in which a transmittance as viewed from a front direction is high and a transmittance as viewed from an oblique direction can be lowered, a laminate, an optical film, an image display device, and a backlight module. The light absorption anisotropic layer includes a liquid crystalline compound and at least one dichroic substance, in which the dichroic substance is aligned perpendicular to the film surface, and an alignment degree of the light absorption anisotropic layer at a wavelength of 550 nm is 0.95 or more.

公开(公告)号：US11054691B2

公开(公告)日：2021-07-06

申请号：US16940794

申请日：2020-07-28

Applicant: FUJIFILM Corporation

Inventor： Fumitake Mitobe ,  Jun Takeda ,  Naoya Nishimura ,  Yuzo Fujiki ,  Yumi Katou ,  Yasukazu Kuwayama

IPC: G02F1/1335 ,  G02F1/13363

Abstract: The present invention provides a polarizing plate including a polarizer having a high transmittance, which can be suitably applied to a circularly polarizing plate with which a significant decrease in an antireflection ability is suppressed in a case where the circularly polarizing plate is disposed on a display element; a circularly polarizing plate; and a display device. The polarizing plate includes a polarizer and an adjacent layer in contact with the polarizer, in which a transmittance in the absorption axis direction of the polarizer is 4.0% or more, and an in-plane average refractive index of the adjacent layer satisfies a relationship of Formula (X), Formula (X): Refractive index in a transmission axis direction of the polarizer

公开(公告)号：US10732455B2

公开(公告)日：2020-08-04

申请号：US16531583

申请日：2019-08-05

Applicant: FUJIFILM Corporation

Inventor： Fumitake Mitobe ,  Naoya Nishimura ,  Jun Takeda

IPC: G02F1/1335

Abstract: The present invention is to provide a liquid crystal display device which is capable of suppressing reflected glare of a display screen on a windshield and the like, has excellent front contrast, and has excellent visibility of a display screen as viewed via polarized sunglasses. A liquid crystal display device includes, in order from a viewing side, a viewing side polarizer, a liquid crystal cell, a non-viewing side polarizer, and an anisotropic light absorption layer having an absorption axis in a thickness direction. The liquid crystal display device further includes at least one polarization control layer, in which the polarization control layer is arranged on a viewing side of the viewing side polarizer or on a non-viewing side of the non-viewing side polarizer.