Patents by Inventor Yusuke Tochigi

Yusuke Tochigi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8416381
    Abstract: The present invention provides an anti-glare film which has not only <1> sufficient anti-reflection property but also <2> a high level of contrast and <3> strong anti-glare properties and can be applied on a surface of various display devices such as a note PC, a desktop PC and a TV monitor. The anti-glare film of the present invention includes an anti-glare layer which has concavities and convexities on the surface, a haze according to JIS-7105-1981 in the range of 1.0-5.0%, and an average interval between concavities and convexities on the anti-glare layer surface Sm according to JIS-B0601-1994 in the range of 10-150 ?m.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: April 9, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kae Tochigi, Yusuke Tochigi, Yasushi Yabuhara
  • Patent number: 8350988
    Abstract: The present invention provides an anti-glare film which has <1> sufficient anti-reflection properties, <2> a high level of contrast and <3> strong antifouling properties. A surface of an anti-glare layer of the anti-glare film of the present invention has a concave-convex structure, an arithmetic mean roughness (Ra) according to JIS B0601-1994 in the range of 0.02-0.2 ?m when a cut-off wavelength (?c) is 0.8 mm, and a surface free energy in the range of 15-25 mN/m. In addition, a haze of the anti-glare layer of the anti-glare film of the present invention is in the range of 1.0-5.0%.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: January 8, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kae Tochigi, Yusuke Tochigi, Yasushi Yabuhara
  • Patent number: 8345202
    Abstract: An antiglare film includes a transparent substrate, and an antiglare layer formed on the transparent substrate. The antiglare layer includes a binder matrix and acrylic-styrene copolymer particles, and the binder matrix includes an acrylic material having a hydroxyl group. A quotient RA/H, which is obtained by dividing the average diameter RA of the acrylic-styrene copolymer particles by the average thickness H of the antiglare layer, is within a range of 0.30 to 0.80. A product in |nA?nM|×wA×H, which is the product of: the absolute value |nA?nM| obtained by subtracting the average refractive index nM of the binder matrix from the refractive index nA of the acrylic-styrene copolymer particles; the content wA of the acrylic-styrene copolymer particles when the content wM of the binder matrix in the antiglare layer is 100 parts by weight; and the average thickness H of the antiglare layer, is within a range of 0.70 to 3.00.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 1, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yusuke Tochigi, Kae Tochigi, Takahiro Morinaga
  • Patent number: 8253904
    Abstract: The invention provides an antiglare film that has a low haze value, can maintain antireflection ability, and has inhibited reflection of external light, and also provides a manufacturing method thereof, and a transmission type liquid crystal display. The antiglare film includes a transparent substrate and an antiglare layer, wherein the antiglare layer is formed on the transparent substrate, has a concave-convex structure on the opposite surface of the antiglare layer from the transparent substrate, and includes a binder matrix and particles, the integrated reflectance of the antiglare layer at a wavelength of 550 nm is less than or equal to 4%, and a haze value of the antiglare layer is in the range of 3-15%.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: August 28, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yusuke Tochigi, Kae Takahashi, Takahiro Morinaga
  • Patent number: 8218106
    Abstract: A bulk diffuser including: a base material; and a diffusion layer which has a forming material and inner diffusion particles dispersed in the forming material, and is formed on the base material, wherein the inner diffusion particles include two or more types of spherical particles having different refraction indexes, and variations of cross-sectional area of scattering per unit volume of the bulk diffuser owing to a variation of a refraction index of the forming material are mutually cancelled by a combination of the inner diffusion particles.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: July 10, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hideaki Homma, Takashi Nishihara, Yusuke Tochigi, Shigetomo Sakakibara
  • Patent number: 8199296
    Abstract: An embodiment of the present invention is an antiglare film which includes an antiglare layer having particles A, particles B, and a binder matrix on a transparent substrate. A difference in refractive index between the particles A and the binder matrix (|nA?nM|) is 0.060 or less. A difference in refractive index between the particles B and the binder matrix (|nB?nM|) is in the 0.080-0.300 range. An average diameter (unit: ?m) of the particles B (rB) is in the 0.5-5.0 ?m range. The product value |nB?nM|wBH, which is obtained by multiplying a difference in refractive index between said particles B and said binder matrix (|nB?nM|) by a content (part by weight) of said particles B as against 100 parts by weight of said binder matrix (wB) and an average thickness (unit: ?m) of said antiglare layer (H) is in the 10.0-15.0 range.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: June 12, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Tomo Yoshinari, Yusuke Tochigi, Takashi Nishihara, Hideaki Honma
  • Patent number: 8163383
    Abstract: This invention provides an antiglare film which has high antiglare property and show little white-blurring. An embodiment of the present invention is an antiglare film having a binder matrix and particles on a transparent substrate. The binder matrix is an acrylic material. The particles are made of a copolymer of styrene and methyl methacrylate. The copolymerization ratio by weight of the styrene and methyl methacrylate is in the styrene:methacrylic acid=60:40 to 80:20 range. In addition, a quotient R/H, which is obtained by dividing an average diameter of the particles (R) by the average thickness of the antiglare layer (H), is in the 0.45-0.65 range. Moreover, a quotient wP/wB, which is obtained by dividing a content of the particles in the antiglare layer (wP) by a content of the binder matrix in the antiglare layer (wB) is in the 0.08-0/164.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: April 24, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hisamitsu Kameshima, Yusuke Tochigi
  • Patent number: 8149364
    Abstract: This invention provides an antiglare film of a type with a low content of particles that makes it possible to increase contrast, the antiglare film demonstrating appropriate antiglare property, small white blurring, and a low level of glittering, and also a method for manufacturing the film and a transmission type liquid crystal display. In the antiglare film, a content ratio of the particles in the binder matrix is within a range of 0.5-5 wt. %, a refractive index difference |nA?nM| is equal to or greater than 0.010, R25/R is in the range of 0.7-0.9, R75/R is in the range of 1.10-1.30, and R75/H is in the range of 0.70-1.50.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: April 3, 2012
    Assignee: Toppan Printing Co., Ltd
    Inventors: Kae Takahashi, Yusuke Tochigi, Takahiro Morinaga
  • Publication number: 20110085115
    Abstract: An antiglare film includes a transparent substrate, and an antiglare layer formed on the transparent substrate. The antiglare layer includes a binder matrix and acrylic-styrene copolymer particles, and the binder matrix includes an acrylic material having a hydroxyl group. A quotient RA/H, which is obtained by dividing the average diameter RA of the acrylic-styrene copolymer particles by the average thickness H of the antiglare layer, is within a range of 0.30 to 0.80. A product in |nA?nM|×wA×H, which is the product of: the absolute value |nA?nM] obtained by subtracting the average refractive index nM of the binder matrix from the refractive index nA of the acrylic-styrene copolymer particles; the content wA of the acrylic-styrene copolymer particles when the content wM of the binder matrix in the antiglare layer is 100 parts by weight; and the average thickness H of the antiglare layer, is within a range of 0.70 to 3.00.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 14, 2011
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Yusuke TOCHIGI, Kae TOCHIGI, Takahiro MORINAGA
  • Patent number: 7839474
    Abstract: An antiglare film includes an antiglare layer having particles and a binder matrix on a transparent base material. An antiglare film surface on the antiglare layer side has a concave-convex structure with a ten-point average roughness (Rz1) equal to or larger than 0.08 ?m and equal to or smaller than 0.10 ?m at a cutoff wavelength (?c) of 0.008 mm, the antiglare film surface on the antiglare layer side has a concave-convex structure with a ten-point average roughness (Rz2) equal to or larger than 1.90 ?m and equal to or smaller than 2.50 ?m at a cutoff wavelength (?c) of 0.8 mm, and the antiglare film surface on the antiglare layer side has a concave-convex structure with an average spacing (S) between local peaks equal to or larger than 0.033 mm and equal to or smaller than 0.050 mm at a cutoff wavelength (?c) of 0.8 mm.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: November 23, 2010
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hisamitsu Kameshima, Tomo Yoshinari, Yusuke Tochigi, Kae Takahashi, Takahiro Morinaga
  • Patent number: 7824044
    Abstract: An antiglare film satisfies both (1) high antiglare property in the front direction and (2) absence of white blurring. One embodiment of the invention is an antiglare film provided with an antiglare layer on a transparent substrate, wherein the antiglare layer has a rugged structure on the surface opposite to the transparent substrate; the 5° reflectance of the antiglare film surface on the antiglare layer side is in a range of from 0.30% to 0.70%; the antiglare film surface on the antiglare layer side is provided with a rugged structure having arithmetic average roughness (Ra1) in the range of from 0.020 ?m to 0.040 ?m when a cutoff wavelength (?C) is 0.008 mm; and the antiglare film surface on the antiglare layer side is provided with a rugged structure having arithmetic average roughness (Ra2) in the range of from 0.35 ?m to 0.45 ?m when a cutoff wavelength (?C) is 0.8 mm.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: November 2, 2010
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yusuke Tochigi, Tomo Yoshinari, Kae Takahashi, Hisamitsu Kameshima
  • Publication number: 20100238384
    Abstract: The present invention provides an anti-glare film which has <1> sufficient anti-reflection properties, <2> a high level of contrast and <3> strong antifouling properties. A surface of an anti-glare layer of the anti-glare film of the present invention has a concave-convex structure, an arithmetic mean roughness (Ra) according to JIS B0601-1994 in the range of 0.02-0.2 ?m when a cut-off wavelength (?c) is 0.8 mm, and a surface free energy in the range of 15-25 mN/m. In addition, a haze of the anti-glare layer of the anti-glare film of the present invention is in the range of 1.0-5.0%.
    Type: Application
    Filed: March 15, 2010
    Publication date: September 23, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Kae Tochigi, Yusuke Tochigi, Yasushi Yabuhara
  • Publication number: 20100182551
    Abstract: The present invention provides an anti-glare film which has not only <1> sufficient anti-reflection property but also <2> a high level of contrast and <3> strong anti-glare properties and can be applied on a surface of various display devices such as a note PC, a desktop PC and a TV monitor. The anti-glare film of the present invention includes an anti-glare layer which has concavities and convexities on the surface, a haze according to JIS-7105-1981 in the range of 1.0-5.0%, and an average interval between concavities and convexities on the anti-glare layer surface Sm according to JIS-B0601-1994 in the range of 10-150 ?m.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 22, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Kae Tochigi, Yusuke Tochigi, Yasushi Yabuhara
  • Publication number: 20100079708
    Abstract: This invention provides an antiglare film of a type with a low content of particles that makes it possible to increase contrast, the antiglare film demonstrating appropriate antiglare property, small white blurring, and a low level of glittering, and also a method for manufacturing the film and a transmission type liquid crystal display. In the antiglare film, a content ratio of the particles in the binder matrix is within a range of 0.5-5 wt. %, a refractive index difference |nA?nM| is equal to or greater than 0.010, R25/R is in the range of 0.7-0.9, R75/R is in the range of 1.10-1.30, and R75/H is in the range of 0.70-1.50.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 1, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Kae Takahashi, Yusuke Tochigi, Takahiro Morinaga
  • Publication number: 20100073611
    Abstract: The invention provides an antiglare film that has a low haze value, can maintain antireflection ability, and has inhibited reflection of external light, and also provides a manufacturing method thereof, and a transmission type liquid crystal display. The antiglare film includes a transparent substrate and an antiglare layer, wherein the antiglare layer is formed on the transparent substrate, has a concave-convex structure on the opposite surface of the antiglare layer from the transparent substrate, and includes a binder matrix and particles, the integrated reflectance of the antiglare layer at a wavelength of 550 nm is less than or equal to 4%, and a haze value of the antiglare layer is in the range of 3-15%.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 25, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Yusuke TOCHIGI, Kae TAKAHASHI, Takahiro MORINAGA
  • Publication number: 20090279035
    Abstract: The present invention provides an antiglare film which has (1) appropriate antiglare properties in a frontal direction, (2) no white-blurring (3) no surface appearance such as a kind of orange on the surface of an antiglare layer's side. It is a feature of the antiglare film of the present invention that it has an antiglare layer on a transparent substrate and the antiglare layer includes a binder matrix and particles of an acrylate-styrene copolymer. In addition, the binder matrix includes an acrylic material having a hydroxyl group, a quotient (RA/H) obtained by dividing the average diameter of the particle (RA) by the average thickness of the antiglare layer (H) is in the range of 0.30-0.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Takahiro Morinaga, Yusuke Tochigi, Hideaki Honma, Takashi Nishihara
  • Publication number: 20090244708
    Abstract: This invention provides an antiglare film which has high antiglare property and show little white-blurring. An embodiment of the present invention is an antiglare film having a binder matrix and particles on a transparent substrate. The binder matrix is an acrylic material. The particles are made of a copolymer of styrene and methyl methacrylate. The copolymerization ratio by weight of the styrene and methyl methacrylate is in the styrene:methacrylic acid=60:40 to 80:20 range. In addition, a quotient R/H, which is obtained by dividing an average diameter of the particles (R) by the average thickness of the antiglare layer (H), is in the 0.45-0.65 range. Moreover, a quotient wP/wB, which is obtained by dividing a content of the particles in the antiglare layer (wP) by a content of the binder matrix in the antiglare layer (wB) is in the 0.08-0/164.
    Type: Application
    Filed: March 17, 2009
    Publication date: October 1, 2009
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Hisamitsu Kameshima, Yusuke Tochigi
  • Patent number: 7589897
    Abstract: An antiglare film comprises a transparent substrate; and an antiglare layer on the transparent substrate, the layer including a binder matrix, organic particles A and organic particles B having an average particle diameter smaller than an average particle diameter of particles A, organic particles A and organic particles B dispersed in the binder matrix. An antiglare film having of the present invention can have the following features: good antiglare property; no white blur; high abrasion resistant property; less dazzling; and not whitened.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: September 15, 2009
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hisamitsu Kameshima, Tomo Yoshinari, Kae Takahashi, Yusuke Tochigi
  • Patent number: 7573549
    Abstract: An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance ?u?v? of less than 0.05 is obtained based on a chromaticity coordinate (u0?, v0?) of CIE1976UCS observed in the front surface 100A1 of the liquid crystal display apparatus and a chromaticity coordinate (u?, v?) observed at an observation angle of ±60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: August 11, 2009
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Takashi Nishihara, Hideaki Homma, Yusuke Tochigi, Shigetomo Sakakibara
  • Publication number: 20090128917
    Abstract: An embodiment of the present invention is an antiglare film which includes an antiglare layer having particles A, particles B, and a binder matrix on a transparent substrate. A difference in refractive index between the particles A and the binder matrix (|nA?nM|) is 0.060 or less. A difference in refractive index between the particles B and the binder matrix (|nB?nM|) is in the 0.080-0.300 range. An average diameter (unit: ?m) of the particles B (rB) is in the 0.5-5.0 ?m range. The product value |nB?nM|wBH, which is obtained by multiplying a difference in refractive index between said particles B and said binder matrix (|nB?nM|) by a content (part by weight) of said particles B as against 100 parts by weight of said binder matrix (wB) and an average thickness (unit: ?m) of said antiglare layer (H) is in the 10.0-15.0 range.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 21, 2009
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Tomo Yoshinari, Yusuke Tochigi, Takashi Nishihara, Hideaki Honma