公开(公告)号：US09707897B2

公开(公告)日：2017-07-18

申请号：US15011858

申请日：2016-02-01

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Tadayuki Kameyama ,  Yoshitsugu Kitamura ,  Keisuke Kimura ,  Hiroki Kuramoto

IPC: B60R1/12 ,  G02B27/28 ,  G02B5/30 ,  G02B27/14 ,  B60R1/08 ,  G02F1/1335 ,  G02B5/08

CPC classification number: B60R1/12 ,  B60R1/083 ,  B60R1/084 ,  B60R1/088 ,  B60R2001/1215 ,  G02B5/08 ,  G02B5/3083 ,  G02B27/144 ,  G02B27/281 ,  G02F1/133536 ,  G02F1/133553 ,  G02F2001/133545 ,  G02F2001/133567

Abstract: An image display mirror for a vehicle includes a first polarizing plate arranged so as to be rotatable in a plane, a half mirror having a reflection axis and configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.

公开(公告)号：US10955699B2

公开(公告)日：2021-03-23

申请号：US16334909

申请日：2017-09-22

Applicant: NITTO DENKO CORPORATION

Inventor： Takehito Fuchida ,  Hiroaki Fumoto ,  Katsunori Takada ,  Yoshitsugu Kitamura

IPC: G02F1/1335 ,  G02B5/00 ,  G02B5/30 ,  G02B5/02

Abstract: There is provided an optical laminate that can achieve a liquid crystal display apparatus in which the occurrence of moire is suppressed, and which is excellent in brightness and viewing angle characteristic. An optical laminate of the present invention includes in the stated order: a polarizer; a light-diffusing pressure-sensitive adhesive layer; a matte layer; and a louver layer. The louver layer has light-transmitting portions each having a trapezoidal section arrayed along a film plane, and light-absorbing portions each having a trapezoidal section arrayed between the light-transmitting portions. A haze value H of the light-diffusing pressure-sensitive adhesive layer and a bias angle B of the louver layer satisfy relationships represented by the following expressions (1) to (3): 2≤B≤6  (1) 20≤H≤60  (2) B×H≥40  (3) where the bias angle means a tilt angle of each of the trapezoidal sections with respect to a normal direction.

公开(公告)号：US10585224B2

公开(公告)日：2020-03-10

申请号：US15565462

申请日：2016-03-10

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Kota Nakai ,  Naotaka Higuchi ,  Keisuke Kimura ,  Yoshitsugu Kitamura ,  Hiroki Kuramoto

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

Abstract: There is provided a polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment of the present invention includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.

公开(公告)号：US20200073035A1

公开(公告)日：2020-03-05

申请号：US16676615

申请日：2019-11-07

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Shinobu Nagano ,  Eiko Suefusa ,  Yoshitsugu Kitamura ,  Keisuke Kimura ,  Hiroki Kuramoto ,  Youichirou Sugino

IPC: G02B5/30 ,  B29C63/00

Abstract: There is provided a polarizing plate excellent in durability. A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.

公开(公告)号：US20190331838A1

公开(公告)日：2019-10-31

申请号：US16468469

申请日：2017-11-29

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshimi Konno ,  Hironori Yaginuma ,  Akinori Izaki ,  Yoshitsugu Kitamura

IPC: G02B5/30 ,  G02F1/1335 ,  B32B7/02

Abstract: There is provided an optical laminate that can improve viewability by suppressing a hue change in accordance with the angle of polarized sunglasses. An optical laminate of the present invention includes: a first retardation layer; a second retardation layer; a polarizer; and a third retardation layer. The first retardation layer, the second retardation layer, the polarizer, and the third retardation layer is laminated from a viewer side in the stated order.

公开(公告)号：US20190243046A1

公开(公告)日：2019-08-08

申请号：US16254946

申请日：2019-01-23

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Daisuke Ogomi ,  Shinobu Nagano ,  Eiko Suefusa ,  Yoshitsugu Kitamura ,  Hiroki Kuramoto ,  Youichirou Sugino ,  Keisuke Kimura

IPC: G02B5/30 ,  B32B3/26 ,  B32B5/14 ,  G02B1/14 ,  G02B1/08

CPC classification number: G02B5/3033 ,  B23K26/382 ,  B29D11/00432 ,  B29D11/00644 ,  B29D11/0073 ,  B29D11/00865 ,  B29D11/00894 ,  B29D11/00913 ,  B29K2105/0032 ,  B29K2105/256 ,  B29K2629/04 ,  B29K2995/002 ,  B29K2995/0034 ,  B32B3/266 ,  B32B5/142 ,  B32B5/147 ,  B32B27/306 ,  B32B2038/042 ,  B32B2038/047 ,  B32B2307/402 ,  B32B2307/42 ,  B32B2329/04 ,  B32B2551/00 ,  C08J5/18 ,  C08J7/04 ,  G02B1/08 ,  G02B1/14 ,  G02F1/133528

Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.

公开(公告)号：US20190227364A1

公开(公告)日：2019-07-25

申请号：US16327118

申请日：2018-04-20

Applicant: NITTO DENKO CORPORATION

Inventor： Ryo Kawamura ,  Takehito Fuchida ,  Katsunori Takada ,  Yoshitsugu Kitamura

IPC: G02F1/13363 ,  G02F1/1335

Abstract: A liquid crystal display apparatus having improved viewing angle characteristics in a region vertically asymmetrical. A liquid crystal display apparatus of the present invention includes: a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in homogeneous alignment under a state in which an electric field is absent; a first polarizer arranged on a viewer side of the liquid crystal cell; a second polarizer arranged on a back surface side of the liquid crystal cell; a first optical compensation layer arranged between the liquid crystal cell and the first polarizer; and a second optical compensation layer arranged between the liquid crystal cell and the first optical compensation layer. A refractive index nz1 in a thickness direction of the first optical compensation layer is less than 1.5187, and a refractive index nz2 in a thickness direction of the second optical compensation layer is less than 1.5340.

公开(公告)号：US20190079343A1

公开(公告)日：2019-03-14

申请号：US16127626

申请日：2018-09-11

Applicant: NITTO DENKO CORPORATION

Inventor： Takehito Fuchida ,  Katsunori Takada ,  Yoshitsugu Kitamura

IPC: G02F1/1335

Abstract: An object of the present invention is to provide an optical laminate that can achieve an excellent reflection hue and an excellent viewing angle characteristic. An optical laminate of the present invention includes a polarizer; a retardation layer configured to substantially function as a λ/4 plate; and a light-diffusing layer. The polarizer has a hue a of from −1.2 to 0 and a hue b of from 0 to 3.0.

公开(公告)号：US10023123B2

公开(公告)日：2018-07-17

申请号：US14994672

申请日：2016-01-13

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Tadayuki Kameyama ,  Yoshitsugu Kitamura ,  Keisuke Kimura ,  Hiroki Kuramoto

IPC: B60R1/08 ,  G02B5/08 ,  G02B5/30 ,  B60R1/12

Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a circularly polarizing plate arranged attachably and removably; a half mirror; and an image display apparatus in the stated order from a viewer side. In one embodiment, attached and removed states of the circularly polarizing plate are switched when an image is displayed on the image display apparatus and when the image is not displayed thereon, and when the image is displayed, the circularly polarizing plate is arranged between the half mirror and a viewer.

公开(公告)号：US20180120488A1

公开(公告)日：2018-05-03

申请号：US15565462

申请日：2016-03-10

Applicant: NITTO DENKO CORPORATION

Inventor： Katsunori Takada ,  Kota Nakai ,  Naotaka Higuchi ,  Keisuke Kimura ,  Yoshitsugu Kitamura ,  Hiroki Kuramoto

IPC: G02B5/30 ,  G02F1/1335

CPC classification number: G02B5/3025 ,  G02B1/14 ,  G02B5/3033 ,  G02F1/1335 ,  G02F1/133528

Abstract: There is provided a polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment of the present invention includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.