公开(公告)号：US11385391B2

公开(公告)日：2022-07-12

申请号：US16935468

申请日：2020-07-22

Applicant: NITTO DENKO CORPORATION

Inventor： Masahiro Yaegashi ,  Daisuke Ogomi ,  Yuki Nakano ,  Yuji Saiki ,  Kota Nakai

IPC: G02B5/30 ,  B32B27/16 ,  B32B23/20 ,  B32B27/34 ,  B29D11/00 ,  B32B27/32 ,  B32B3/30 ,  B32B27/30 ,  B32B27/20 ,  B32B27/36 ,  B32B7/06 ,  B32B27/08 ,  B32B23/08 ,  B32B3/26 ,  G02B1/14 ,  B32B7/12 ,  H01L51/52 ,  G02F1/1335 ,  G02F1/13363

Abstract: A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer according to an embodiment includes a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.

公开(公告)号：US10215900B2

公开(公告)日：2019-02-26

申请号：US15321875

申请日：2015-06-26

Applicant: NITTO DENKO CORPORATION

Inventor： Masahiro Yaegashi ,  Daisuke Ogomi ,  Yuki Nakano ,  Yuji Saiki ,  Kota Nakai

IPC: G02B5/30 ,  B32B7/02 ,  G09F9/00 ,  G02B1/14 ,  B32B3/26 ,  B32B3/30 ,  B32B7/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/20 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  H01L51/52 ,  B29D11/00 ,  G02F1/1335

Abstract: A long polarizing film laminate capable of producing a polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizing film laminate according to an embodiment of the present invention includes: a long polarizer; and a surface protective film arranged on one surface side of the polarizer. The polarizing film laminate has, on the one surface side, exposed portions where the polarizer is exposed. The exposed portions are arranged in a lengthwise direction and/or a widthwise direction of the polarizer at predetermined intervals.

公开(公告)号：US20170137671A1

公开(公告)日：2017-05-18

申请号：US15322258

申请日：2015-06-26

Applicant: NITTO DENKO CORPORATION

Inventor： Daisuke Ogomi ,  Masahiro Yaegashi ,  Yuki Nakano ,  Kota Nakai ,  Yuki Ose

IPC: C09J7/02 ,  G02B1/14 ,  G02B5/30

Abstract: A long pressure-sensitive adhesive film, that can be suitably used as a surface protective film or mask at the time of the treatment of a predetermined portion of a long film. A pressure-sensitive adhesive film including a long resin film; and a pressure-sensitive adhesive layer arranged on one surface of the resin film. The pressure-sensitive adhesive film has through-holes that are arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, and that penetrate the resin film and the pressure-sensitive adhesive layer integrally.

公开(公告)号：US20170090087A1

公开(公告)日：2017-03-30

申请号：US15271973

申请日：2016-09-21

Applicant: NITTO DENKO CORPORATION

Inventor： Shusaku Goto ,  Masahiro Yaegashi

IPC: G02B5/30 ,  C09D129/04

CPC classification number: G02B5/3033 ,  C08L2205/02 ,  C09D129/04 ,  C08L29/14 ,  C08K3/01

Abstract: There is provided a polarizer having a non-polarization portion and excellent in uniformity. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, the polarizer having formed therein a transparent portion having a transmittance higher than that of another portion, wherein: the resin film contains a polyvinyl alcohol-based resin; and a saponification degree of the polyvinyl alcohol-based resin of the transparent portion is higher than a saponification degree of the polyvinyl alcohol-based resin of the another portion.

公开(公告)号：US20160238770A1

公开(公告)日：2016-08-18

申请号：US15042599

申请日：2016-02-12

Applicant: NITTO DENKO CORPORATION

Inventor： Shusaku Goto ,  Daisuke Ogomi ,  Masahiro Yaegashi

IPC: G02B5/30 ,  G02B27/28

CPC classification number: G02B5/3033

Abstract: A polarizer according to an embodiment of the present invention includes a resin film having a thickness of 13 μm or less and containing iodine. The resin film has formed therein a low-concentration portion having a content of the iodine lower than that of another portion.

Abstract translation: 根据本发明的实施方案的偏振器包括厚度为13μm以下且含有碘的树脂膜。 树脂膜中形成了碘含量低于另一部分的低浓度部分。

公开(公告)号：US20240103307A1

公开(公告)日：2024-03-28

申请号：US18358260

申请日：2023-07-25

Applicant: NITTO DENKO CORPORATION

Inventor： Yuji Toyota ,  Masahiro Yaegashi ,  Masanori Otsuka

IPC: G02F1/13 ,  G02F1/1335

CPC classification number: G02F1/1323 ,  G02F1/133528

Abstract: A peeking prevention system includes: a display device having a display plane from which to emit linearly polarized light; a partition to delimit from the surroundings a space in which displaying is to be provided by the display device, the partition having a light-transmitting portion through which the inside of the space is viewable; and an optical stack placeable in opposing relationship with the display plane of the display device. The light-transmitting portion includes a transparent substrate and a first polarizing layer, the first polarizing layer having a first absorption axis that is parallel to a first direction. The optical stack includes a second polarizing layer having a second absorption axis that is parallel to a second direction, the second direction being orthogonal to the first direction, and a ½ wave plate at a side of the second polarizing layer facing the display plane.

公开(公告)号：US20230123755A1

公开(公告)日：2023-04-20

申请号：US17915526

申请日：2021-10-14

Applicant: NITTO DENKO CORPORATION

Inventor： Yuji Toyota ,  Masahiro Yaegashi

IPC: G03B21/604 ,  G02B5/30 ,  B43L1/00

Abstract: A whiteboard film (100) according to an embodiment of the present invention includes: a diffuse reflection layer (40) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection layer (40) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction. A whiteboard (100a) according to an embodiment of the present invention includes: a diffuse reflection plate (40a) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection plate (40a) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction.

公开(公告)号：US11467328B2

公开(公告)日：2022-10-11

申请号：US15739531

申请日：2016-06-17

Applicant: NITTO DENKO CORPORATION

Inventor： Shinobu Nagano ,  Masahiro Yaegashi

IPC: G02B5/30 ,  G02B1/10 ,  G02F1/1335 ,  G02B1/04

Abstract: Provided is a polarizer having a non-polarization portion with reduced shape unevenness. The polarizer of the present invention is a polarizer having a non-polarization portion, in which the non-polarization portion has a shape matching degree of 0.05 or less. In such polarizer, the number of portions where the shape of the non-polarization portion is distorted is small. Accordingly, when the non-polarization portion of the polarizer is used as, for example, a portion corresponding to a camera portion of an image display apparatus, alignment processability is improved and hence the alignment of the camera can be satisfactorily performed.

公开(公告)号：US11061176B2

公开(公告)日：2021-07-13

申请号：US16801670

申请日：2020-02-26

Applicant: NITTO DENKO CORPORATION

Inventor： Daisuke Ogomi ,  Yuji Saiki ,  Masahiro Yaegashi ,  Kota Nakai ,  Yuki Nakano

IPC: G02B5/30 ,  G02F1/1335 ,  H01L51/52

Abstract: A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer including a resin film containing a dichroic substance, wherein the polarizer has a low dichroic substance concentration portion whose content of the dichroic substance is relatively low in the resin film. In the polarizer, the low dichroic substance concentration portion has a content of an alkali metal and/or an alkaline earth metal of 3.6 wt % or less.

公开(公告)号：US20210157223A1

公开(公告)日：2021-05-27

申请号：US17047866

申请日：2019-04-03

Applicant: NITTO DENKO CORPORATION

Inventor： Masahiro Yaegashi ,  Atsushi Kishi ,  Kozo Nakamura

IPC: G03B21/604 ,  G02B5/30 ,  G02B5/02

Abstract: There is provided a projection screen optical laminate, which can achieve a projection screen that does not impair an interior appearance, can be produced at reasonable cost, and can achieve a projected image that achieves both of excellent contrast and an excellent viewing angle characteristic. A projection screen optical laminate according to an embodiment of the present invention includes: a polarizer; a high-haze layer; and a retardation layer. The high-haze layer has a haze of 90% or more, and a total light transmittance of 80% or more, and the retardation layer has an in-plane retardation Re(550) of from 100 nm to 200 nm.