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公开(公告)号：US10942387B2
公开(公告)日：2021-03-09
申请号：US16127626
申请日：2018-09-11
Applicant: NITTO DENKO CORPORATION
Inventor： Takehito Fuchida , Katsunori Takada , Yoshitsugu Kitamura
IPC: G02F1/1335 , G02B5/02 , G02B5/30 , G02F1/13363 , B29D11/00
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.
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公开(公告)号：US10914868B2
公开(公告)日：2021-02-09
申请号：US16676660
申请日：2019-11-07
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Naotaka Higuchi , Kota Nakai , Shinobu Nagano , Eiko Suefusa , Yoshitsugu Kitamura , Keisuke Kimura
IPC: G02B1/14 , G02B5/30 , B32B27/08 , B32B27/16 , B32B23/08 , B32B3/02 , B32B3/26 , B32B38/00 , B32B7/12 , B32B27/30 , B32B38/04
Abstract: A primary object of the present invention is to provide a polarizing plate excellent in durability. A polarizing plate (100) according to an embodiment of the present invention includes: a polarizer (10); and a protective film (21 and 22) arranged on at least one side of the polarizer (10). The polarizing plate (100) has a dimensional change ratio of −0.2% or more in a transmission axis direction thereof when the polarizing plate (100) cut into a size measuring 100 mm by 100 mm is bonded to a glass plate with a pressure-sensitive adhesive and the following operation is repeated 100 times: the polarizing plate (100) bonded to the glass plate is left to stand under an atmosphere at −40° C. for 30 minutes and then left to stand under an atmosphere at 85° C. for 30 minutes.
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公开(公告)号：US20200310192A1
公开(公告)日：2020-10-01
申请号：US16314146
申请日：2017-06-29
Applicant: NITTO DENKO CORPORATION
Inventor： Takehito Fuchida , Hiroaki Fumoto , Katsunori Takada , Yoshitsugu Kitamura
IPC: G02F1/1335 , G02B5/30 , G02B1/14
Abstract: There is provided an optical member that can suppress a reduction in viewability when a liquid crystal display apparatus with a protective cover is viewed through polarized sunglasses at low cost. An optical member according to an embodiment of the present invention includes: a polarizing film; and a protective cover. The protective cover has an in-plane retardation of 1,000 nm or more. An angle formed by a slow axis of the protective cover and an absorption axis of the polarizing film is from 40° to 50°.
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公开(公告)号：US20190310406A1
公开(公告)日：2019-10-10
申请号：US16449900
申请日：2019-06-24
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Shinobu Nagano , Eiko Suefusa , Yoshitsugu Kitamura , Keisuke Kimura , Hiroki Kuramoto , Youichirou Sugino
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.
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公开(公告)号：US10377312B2
公开(公告)日：2019-08-13
申请号：US14994620
申请日：2016-01-13
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Tadayuki Kameyama , Yoshitsugu Kitamura , Keisuke Kimura , Hiroki Kuramoto
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 first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side. In one embodiment, the first polarizing plate includes a polarizer, and the direction of the polarizer of the first polarizing plate is set so that the transmittance of light output from the image display apparatus that is transmitted through the first polarizing plate becomes maximum.
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Patent Agency Ranking
公开(公告)号：US10338431B2
公开(公告)日：2019-07-02
申请号：US15766096
申请日：2017-04-10
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Eiko Suefusa , Yoshitsugu Kitamura , Keisuke Kimura , Seiji Umemoto
IPC: G02B5/30 , G02F1/1333 , G02F1/1335 , G02F1/1343 , G02F1/13363
Abstract: A liquid crystal display apparatus includes a liquid crystal cell; a first polarizer arranged on a back surface side of the liquid crystal cell; a second polarizer arranged on a viewer side of the liquid crystal cell; a cover sheet arranged on a viewer side of the second polarizer, the cover sheet having a transmission portion at a position corresponding to a display region of the liquid crystal cell; a first optical compensation layer arranged on a viewer side of the cover sheet, the first optical compensation layer having an Re(550) of from 100 nm to 180 nm; and a third polarizer arranged on a viewer side of the first optical compensation layer, wherein an angle formed by a slow axis direction of the first optical compensation layer and an absorption axis direction of the third polarizer is from 35° to 55° or from 125° to 145°.
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公开(公告)号：US10215901B2
公开(公告)日：2019-02-26
申请号：US15338975
申请日：2016-10-31
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Daisuke Ogomi , Shinobu Nagano , Eiko Suefusa , Yoshitsugu Kitamura , Hiroki Kuramoto , Youichirou Sugino , Keisuke Kimura
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.
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公开(公告)号：US20180292710A1
公开(公告)日：2018-10-11
申请号：US15766096
申请日：2017-04-10
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Eiko Suefusa , Yoshitsugu Kitamura , Keisuke Kimura , Seiji Umemoto
IPC: G02F1/1335 , G02F1/13363 , G02F1/1343
CPC classification number: G02F1/133528 , G02B5/30 , G02F1/13363 , G02F1/134309 , G02F2001/133331 , G02F2001/133541 , G02F2001/133638
Abstract: A liquid crystal display apparatus includes a liquid crystal cell; a first polarizer arranged on a back surface side of the liquid crystal cell; a second polarizer arranged on a viewer side of the liquid crystal cell; a cover sheet arranged on a viewer side of the second polarizer, the cover sheet having a transmission portion at a position corresponding to a display region of the liquid crystal cell; a first optical compensation layer arranged on a viewer side of the cover sheet, the first optical compensation layer having an Re(550) of from 100 nm to 180 nm; and a third polarizer arranged on a viewer side of the first optical compensation layer, wherein an angle formed by a slow axis direction of the first optical compensation layer and an absorption axis direction of the third polarizer is from 35° to 55° or from 125° to 145°.
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公开(公告)号：US20180292709A1
公开(公告)日：2018-10-11
申请号：US15766084
申请日：2017-04-10
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Eiko Suefusa , Yoshitsugu Kitamura , Keisuke Kimura , Seiji Umemoto
IPC: G02F1/1335 , G02F1/13363 , G02F1/1343
Abstract: There is provided a liquid crystal display apparatus having the following feature: although the liquid crystal display apparatus has a step between its display screen and outermost surface, the step is hardly recognized; and the liquid crystal display apparatus can achieve bright display. A liquid crystal display apparatus according to the present invention includes a liquid crystal cell; a first polarizer arranged on a back surface side of the liquid crystal cell; a cover sheet arranged on a viewer side of the liquid crystal cell, the cover sheet having a transmission portion at a position corresponding to a display region of the liquid crystal cell; and a second polarizer arranged on a viewer side of the cover sheet to cover the transmission portion, wherein an absorption axis direction of the first polarizer and an absorption axis direction of the second polarizer are substantially perpendicular to each other.
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公开(公告)号：US20180011233A1
公开(公告)日：2018-01-11
申请号：US15545766
申请日：2016-03-10
Applicant: NITTO DENKO CORPORATION
Inventor： Katsunori Takada , Kota Nakai , Naotaka Higuchi , Keisuke Kimura , Yoshitsugu Kitamura , Hiroki Kuramoto
CPC classification number: G02B5/305 , B29D11/00644 , C08J3/24 , C08J5/18 , C08J2329/04 , G02B1/08 , G02B1/14 , G02B5/3033
Abstract: There is provided a polarizer excellent in durability. A polarizer according to one embodiment of the present invention includes a resin film containing boric acid, wherein the resin film has a low-concentration portion, which contains a lower concentration of the boric acid than that in any other site, formed in an end portion thereof.
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