公开(公告)号：US20190113791A1

公开(公告)日：2019-04-18

申请号：US16076566

申请日：2017-02-09

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Kana YAMAMOTO ,  Masayuki TSUNEKAWA ,  Toshiki IWASAKI ,  Takahisa NOMURA ,  Hiroki NAKAGAWA ,  Takanori HAMADA ,  Eiji OOISHI ,  Kuniaki YOSHIKATA ,  Masataka NAKASHIMA

IPC: G02F1/13363 ,  G02F1/1333 ,  G02F1/1335

Abstract: Provided are [1] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107 Ω/□ or more and 1.0×1010 Ω/□ or less, and a standard deviation σ of the surface resistivity is 5.0×108 Ω/□ or less, [2] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein the substrate film is a cycloolefin polymer film, a ratio of a thickness of the substrate film to a thickness of the entire optical laminate is 80% or more and 95% or less, and a rate of elongation of the optical laminate at a temperature of 150° C., as measured using a dynamic viscoelasticity measuring apparatus under conditions of a frequency of 10 Hz, a tensile load of 50 N and a rate of temperature increase of 2° C./min, is 5.0% or more and 20% or less, and [3] an optical laminate comprising a cellulose-based substrate film, a stabilization layer and a conductive layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107 Ω/□ or more and 1.0×1012 Ω/□ or less, and a value obtained by dividing a standard deviation σ of the surface resistivity by the average value is 0.20 or less; as well as a method for producing the optical laminate, a front panel and an image display device.

公开(公告)号：US20210239892A1

公开(公告)日：2021-08-05

申请号：US17050720

申请日：2019-04-26

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Toshiki IWASAKI ,  Yoshiaki OOYARI ,  Yoshimasa OGAWA ,  Jun SATO

IPC: G02B5/30 ,  B32B27/08 ,  B32B27/28

Abstract: An aspect of the present invention provides an optical film 10 including a resin base material 11 and a functional layer 12, wherein a 5-μm square region on the front surface 10A of the optical film 10 is observed to have 1 or more and 50 or less depressions having any shape at least selected from a ring shape, a circular shape, and an irregular shape, when the square region is observed using an atomic force microscope after a rubber eraser abrasion test, in which the front surface 10A is rubbed 4,000 times with a rubber eraser in a reciprocating motion under a load of 500 g; the front surface 10A has a dynamic friction coefficient of 0.70 or less before the test; and the change rate of the dynamic friction coefficient of the front surface 10A between before and after the test is 35%.

公开(公告)号：US20250093697A1

公开(公告)日：2025-03-20

申请号：US18901843

申请日：2024-09-30

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Kana YAMAMOTO ,  Masayuki TSUNEKAWA ,  Toshiki IWASAKI ,  Takahisa NOMURA ,  Hiroki NAKAGAWA ,  Takanori HAMADA ,  Eiji OOISHI ,  Kuniaki YOSHIKATA ,  Masataka NAKASHIMA

IPC: G02F1/1335 ,  B29C65/48 ,  B29D11/00 ,  B29L11/00 ,  B32B7/023 ,  B32B23/08 ,  B32B27/08 ,  B32B27/18 ,  B32B27/32 ,  C08J7/04 ,  G02F1/1333 ,  G02F1/13363 ,  G06F3/041

Abstract: Provided are [1] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107Ω/ or more and 1.0×1010Ω/ or less, and a standard deviation σ of the surface resistivity is 5.0×108Ω/ or less, [2] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein the substrate film is a cycloolefin polymer film, a ratio of a thickness of the substrate film to a thickness of the entire optical laminate is 80% or more and 95% or less, and a rate of elongation of the optical laminate at a temperature of 150° C., as measured using a dynamic viscoelasticity measuring apparatus under conditions of a frequency of 10 Hz, a tensile load of 50 N and a rate of temperature increase of 2° C./min, is 5.0% or more and 20% or less, and [3] an optical laminate comprising a cellulose-based substrate film, a stabilization layer and a conductive layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107Ω/ or more and 1.0×1012Ω/ or less, and a value obtained by dividing a standard deviation σ of the surface resistivity by the average value is 0.20 or less; as well as a method for producing the optical laminate, a front panel and an image display device.

公开(公告)号：US20210041603A1

公开(公告)日：2021-02-11

申请号：US16976328

申请日：2019-02-27

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Satoru KANKE ,  Kiyohiro TAKACHI ,  Kazutoshi ISHIDA ,  Toshiki IWASAKI ,  Masaharu SATO ,  Hiroaki OOMORI ,  Tomohiro OGAWA

IPC: G02B1/14 ,  G02B5/30 ,  G02B1/115 ,  G02F1/1335

Abstract: Provided are a functional film capable of achieving adhesion between a hard coat layer and a functional layer as well as achieving desired optical properties, and a polarizing plate and an image display device, both of which include the above functional film. One aspect of the present invention provides a functional film including a hard coat layer containing a binder resin and plural inorganic particles, and a functional layer closely attached to the front surface of the hard coat layer, wherein the hard coat layer includes a first region including a layer zone, in which denseness of the inorganic particles is 60% or more, from the front surface to a depth of 100 nm in the hard coat layer, and a second region, in which denseness of the inorganic particles is 59% or less, below a depth of 100 nm from the front surface in the hard coat layer.

公开(公告)号：US20190196075A1

公开(公告)日：2019-06-27

申请号：US16091249

申请日：2017-03-31

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Toshiki IWASAKI ,  Kazuya HONDA ,  Yukimitsu IWATA

IPC: G02B5/30 ,  G02B5/22 ,  G02B1/14 ,  G02F1/1335

CPC classification number: G02B5/305 ,  B32B27/00 ,  C09D4/00 ,  C09D5/00 ,  C09D7/40 ,  G02B1/14 ,  G02B5/223 ,  G02B5/30 ,  G02B5/3075 ,  G02F1/133528 ,  G02F2201/50 ,  G02F2202/28

Abstract: According to one aspect of the present invention, a base material-less protective film 20 used in a polarizing plate is provided, wherein the protective film 20 comprises a core layer 21 containing a resin made of a cured product, and an adhesion-improving layer 22 provided on one surface21A of the core layer 21, and wherein a surface 22A of the adhesion-improving layer 22 forms one surface 20A of the protective film 20, and the thickness of the protective film 20 is less than 40 μm, and the tensile break strength of the protective film 20 is 30 N/mm2 or more.