公开(公告)号：US20230417955A1

公开(公告)日：2023-12-28

申请号：US18244144

申请日：2023-09-08

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Shin KAWATA ,  Yukio MATSUI

IPC: G02B1/14 ,  G02B1/04 ,  G02B5/30

CPC classification number: G02B1/14 ,  G02B5/3025 ,  G02B1/04

Abstract: An optical film having both high flexibility and high hardness, and having reduced curl is provided. The optical film includes a polyimide base material and a hard coat layer is laminated thereon, wherein the hard coat layer is composed of a cured film of polysiloxane having a cation-polymerizable organic functional group, and when the optical film is cut into a rectangular shape having a short side with a length of 50 mm parallel to the machine direction and a long side with a length of 150 mm parallel to the transverse direction perpendicular to the machine direction, and the cut sample is placed on a flat surface, then, the average value of the distance between both ends of one short side and the distance between both ends of the other short side is 18 mm or more.

公开(公告)号：US20230375762A1

公开(公告)日：2023-11-23

申请号：US18222303

申请日：2023-07-14

Applicant: TOPPAN INC. ,  TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Yoshiko ISHIMARU ,  Sohei KADOTA ,  Koichi MINATO ,  Ryota OZAKI ,  Rui INOUE

IPC: G02B5/22

CPC classification number: G02B5/22

Abstract: Provided are an optical film that can reduce reflectance, increase luminance, reduce thickness, and improve color reproducibility a display device, and a display device using the same. An optical film characterized by comprising a transparent substrate, a colored layer laminated on one surface side of the transparent substrate and containing a dye, and a functional layer laminated on the other surface side of the transparent substrate, wherein the dye contains a first coloring material having a maximum absorption wavelength of 470 to 530 nm and a half width of the absorption spectrum of 15 to 45 nm, and a second coloring material having a maximum absorption wavelength of 560 to 620 nm and a half width of the absorption spectrum of 15 to 55 nm, and the transparent substrate has an ultraviolet shielding rate of 85% or more according to JIS L 1925.

公开(公告)号：US20180348408A1

公开(公告)日：2018-12-06

申请号：US16058891

申请日：2018-08-08

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki SERIZAWA ,  Takayuki NAKANISHI

IPC: G02B1/111 ,  G02B5/30

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+25, (3) Y≤50, and (4) 7≤X≤25. The optical laminate has a transmitted image clarity of 15% to 55% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 900 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.

公开(公告)号：US20230367051A1

公开(公告)日：2023-11-16

申请号：US18221646

申请日：2023-07-13

Applicant: TOPPAN INC. ,  TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Yuri YOKOYAMA ,  Yoshiko ISHIMARU ,  Koichi MINATO ,  Rui INOUE ,  Keisuke OGATA

IPC: G02B5/22 ,  G02B5/00 ,  G02B1/11

CPC classification number: G02B5/223 ,  G02B5/003 ,  G02B1/11

Abstract: Provided are an optical film that can reduce reflectance, increase luminance, and reduce thickness of a display device, a display device using the optical film, and a composition for forming ultraviolet absorbing layer used for producing the optical film. An optical film characterized in that having a transparent substrate, a colored layer laminated on one side of the transparent substrate and containing a dye, and a functional layer laminated on the colored layer, in which the dye contains a first coloring material having a maximum absorption wavelength within the range of 470 to 530 nm, and a second coloring material having a maximum absorption wavelength in the range of 560 to 620 nm, and the functional layer includes an ultraviolet absorbing layer having an ultraviolet shielding rate of 85% or more, and the pencil hardness of the surface under a load of 500 g is H or higher.

公开(公告)号：US20230357603A1

公开(公告)日：2023-11-09

申请号：US18222081

申请日：2023-07-14

Applicant: TOPPAN INC. ,  TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Yuri YOKOYAMA ,  Yoshiko ISHIMARU ,  Koichi MINATO ,  Rui INOUE ,  Keisuke OGATA

IPC: C09J7/38 ,  C09J11/06

CPC classification number: C09J7/385 ,  C09J11/06

Abstract: Provided are an adhesive sheet that can reduce reflectance, increase luminance and reduce thickness of a display device, a display device using the adhesive sheet, and a composition for forming adhesive layer used for producing the adhesive sheet. An adhesive sheet comprising a first adhesive layer containing an adhesive and a dye, and an ultraviolet absorbing layer laminated on one surface side of the first adhesive layer, wherein the dye contains a first coloring material having a maximum absorption wavelength in the range of 470 to 530 nm and a half width of the absorption spectrum of 15 to 45 nm, and a second coloring material having a maximum absorption wavelength in the range of 560 to 620 nm and a half width of the absorption spectrum of 15 to 55 nm, and the ultraviolet absorbing layer has an ultraviolet shielding rate of 85% or more according to JIS L 1925.

公开(公告)号：US10591644B2

公开(公告)日：2020-03-17

申请号：US16058891

申请日：2018-08-08

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki Serizawa ,  Takayuki Nakanishi

IPC: G02B1/111 ,  G02B1/16 ,  G02B1/18 ,  B32B3/30 ,  G02B5/30 ,  B32B27/20 ,  G02F1/1335 ,  B32B7/02 ,  G02B5/02 ,  G09F9/00

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+25, (3) Y≤50, and (4) 7≤X≤25. The optical laminate has a transmitted image clarity of 15% to 55% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 900 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.

公开(公告)号：US10539720B2

公开(公告)日：2020-01-21

申请号：US16053502

申请日：2018-08-02

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki Serizawa ,  Takayuki Nakanishi

IPC: G02B5/02 ,  B32B27/20 ,  B32B3/30 ,  G02B5/30 ,  G02B1/111 ,  B32B7/02 ,  G02B1/16 ,  G02B1/18 ,  B32B27/06 ,  B32B27/30 ,  G02F1/1335

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on of the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+17, (3) Y≤57, and (4) 19≤X≤40. The optical laminate has a transmitted image clarity of 30% to 70% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 600 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.

公开(公告)号：US20180341049A1

公开(公告)日：2018-11-29

申请号：US16053502

申请日：2018-08-02

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki SERIZAWA ,  Takayuki NAKANISHI

IPC: G02B5/02 ,  B32B3/30 ,  B32B27/20 ,  B32B27/06 ,  B32B27/30

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on of the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+17, (3) Y≤57, and (4) 19≤X≤40. The optical laminate has a transmitted image clarity of 30% to 70% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 600 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outeimost surface of the optical functional layer.