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：US20190381762A1

公开(公告)日：2019-12-19

申请号：US16082194

申请日：2017-03-06

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Kana YAMAMOTO ,  Takanori HAMADA ,  Masataka NAKASHIMA ,  Takahisa NOMURA

IPC: B32B7/025 ,  B32B7/023 ,  B32B27/08 ,  B32B27/30 ,  B32B3/30 ,  C08L33/14

Abstract: The present invention provides an optical layered body having excellent blue light blocking properties without affecting the color tone of displayed images. Provided is an optical layered body having a structure including: a substrate; and one or two or more functional layers on at least one surface of the substrate, the optical layered body having a spectral transmittance at a wavelength of 380 nm of lower than 1%, a spectral transmittance at a wavelength of 410 nm of lower than 10%, and a spectral transmittance at a wavelength of 440 nm of 70% or higher.

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：US20220367832A1

公开(公告)日：2022-11-17

申请号：US17762306

申请日：2020-09-28

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Atsuhiro KOBAYASHI ,  Yousuke KOUSAKA ,  Takayuki FUKUDA ,  Kazuya HONDA ,  Kana YAMAMOTO ,  Yoshimasa OGAWA ,  Jun SATO ,  Gen FURUI ,  Keisuke YAMADA ,  Saori KAWAGUCHI

IPC: H01L51/52 ,  H05K5/03 ,  B32B7/022 ,  B32B7/12 ,  B32B27/08 ,  B32B27/28 ,  B32B27/30 ,  B32B27/36 ,  B32B27/40 ,  B32B17/10

Abstract: The present disclosure provides a front panel for a display device comprising a substrate layer, an A layer, an impact absorbing layer, and a B layer, in this order, wherein a shear storage elastic modulus of the A layer and the B layer, at frequency of 950 Hz and temperature of 23° C., is 20 MPa or less, and in the impact absorbing layer, a tensile storage elastic modulus at frequency of 950 Hz and temperature of 23° C. is 200 MPa or more and 5000 MPa or less, and a glass transition temperature is 50° C. or more.

公开(公告)号：US20230016838A1

公开(公告)日：2023-01-19

申请号：US17762643

申请日：2020-09-28

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Atsuhiro KOBAYASHI ,  Yousuke KOUSAKA ,  Takayuki FUKUDA ,  Kazuya HONDA ,  Kana YAMAMOTO ,  Yoshimasa OGAWA ,  Jun SATO ,  Gen FURUI ,  Keisuke YAMADA ,  Saori KAWAGUCHI

IPC: C08J7/046 ,  C08J7/04 ,  C08J5/18 ,  C08F222/10 ,  C08F220/30 ,  B32B27/08 ,  B32B27/30

Abstract: One embodiment of the present disclosure provides a resin layer 10 used for an image displaying device, wherein a shear storage elastic modulus G′ of the resin layer 10, at 25° C. and frequency range of 500 Hz or more and 1000 Hz or less, is 30 MPa or more and 200 MPa or less, and a glass transition temperature of the resin layer 10 is 50° C. or more.

公开(公告)号：US20200050039A1

公开(公告)日：2020-02-13

申请号：US16068044

申请日：2017-01-05

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Yasuhiro KOIKE ,  Takashi KURODA ,  Kana YAMAMOTO

IPC: G02F1/13363 ,  G02B5/30 ,  G02F1/1335

Abstract: The present invention aims to provide an image display device including an optical film having a thickness suitable for practical use without including any special inorganic material, wherein the image display device has high color rendering properties and is capable of minimizing the occurrence of blackout and interference colors (rainbow unevenness) even when the image display device includes light sources that emit light having a narrow emission spectrum. The present invention provides an image display device including an optical film having an in-plane birefringence and a polarizer in this order, wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer, the optical film has a retardation of 3000 nm or more, and light incident on the optical film provides at least 50% coverage of ITU-R BT.2020.