Patents by Inventor Atsushi Takakuwa

Atsushi Takakuwa 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: 10981301
    Abstract: A mold for a wire grid polarizer includes a hard mold and a soft mold, in which the hard mold includes a main body, an oxidization layer provided on the main body, and a SAM layer provided on the oxidization layer and including an additive, the soft mold includes a substrate, and a protrusions and depressions portion including a polymerized releasing agent, and a region that is hydrophobic in the polymerized releasing agent is arranged on a surface of the protrusions and depressions portion.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 20, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min Hyuck Kang, Yukihiro Miyazawa, Myeong Hee Kim, Jung Woo Park, Han Su Kim, Dong Eon Lee, Gug Rae Jo, Seung-Yeon Chae, Atsushi Takakuwa
  • Patent number: 10752719
    Abstract: A composition for a soft mold according to an embodiment of the inventive concept may manufacture a soft mold having good durability and release properties by including at least one multifunctional acrylate monomer, at least one photoinitiator, and a siloxane compound, and may improve productivity in the manufacture of an optical member by using the soft mold.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: August 25, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Minhyuck Kang, Yukihiro Miyazawa, Myeonghee Kim, Jungwoo Park, Atsushi Takakuwa, Gugrae Jo, Kangsoo Han
  • Publication number: 20190232531
    Abstract: A mold for a wire grid polarizer includes a hard mold and a soft mold, in which the hard mold includes a main body, an oxidization layer provided on the main body, and a SAM layer provided on the oxidization layer and including an additive, the soft mold includes a substrate, and a protrusions and depressions portion including a polymerized releasing agent, and a region that is hydrophobic in the polymerized releasing agent is arranged on a surface of the protrusions and depressions portion.
    Type: Application
    Filed: September 12, 2018
    Publication date: August 1, 2019
    Inventors: MIN HYUCK KANG, Yukihiro Miyazawa, Myeong Hee Kim, Jung Woo Park, Han Su Kim, Dong Eon Lee, Gug Rae Jo, Seung-Yeon Chae, Atsushi Takakuwa
  • Patent number: 10156668
    Abstract: A method of fabricating a wire grid polarizer includes sequentially stacking a conductive wire pattern layer, a sacrificial layer, and an imprint pattern layer; patterning the imprint pattern layer; inspecting the patterned imprint pattern layer for a fault; and removing the sacrificial layer from the conductive wire pattern layer if the fault is present on the patterned imprint pattern layer.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 18, 2018
    Assignee: Samsung Display Co., Ltd
    Inventor: Atsushi Takakuwa
  • Publication number: 20180298134
    Abstract: A composition for a soft mold according to an embodiment of the inventive concept may manufacture a soft mold having good durability and release properties by including at least one multifunctional acrylate monomer, at least one photoinitiator, and a siloxane compound, and may improve productivity in the manufacture of an optical member by using the soft mold.
    Type: Application
    Filed: November 6, 2017
    Publication date: October 18, 2018
    Inventors: Minhyuck KANG, Yukihiro MIYAZAWA, Myeonghee KIM, Jungwoo PARK, Atsushi TAKAKUWA, Gugrae JO, Kangsoo HAN
  • Patent number: 9631068
    Abstract: A photo-curable resin composition includes a nano-particle. The nano-particle is surface-modified with an organic compound. The photo-curable resin composition includes a photo-polymerization initiator and a radical-reactive monomer.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 25, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Atsushi Takakuwa
  • Patent number: 9618793
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight unit providing light to the liquid crystal display panel. The liquid crystal display panel includes a first substrate on which a thin film transistor is disposed, a second substrate facing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a first polarizer disposed on the second substrate having a plurality of metal patterns spaced apart from each other by an interval. The backlight unit faces the second substrate.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Gun Nam, Kyoung-Tai Han, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Atsushi Takakuwa
  • Publication number: 20160370651
    Abstract: A liquid crystal display includes a first substrate. A plurality of fine metal lines is disposed on the first substrate. The plurality of fine metal lines including a plurality of small regions. A second substrate is aligned with the first substrate. A light blocking portion is disposed on the second substrate. The light blocking portion is disposed in a region between the small regions of the plurality of small regions of the plurality of tine metal lines.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Inventors: ATSUSHI TAKAKUWA, Dae Hwan Jang, Hyang-Shik Kong, Gug Rae Jo, Kyu Young Kim
  • Patent number: 9494721
    Abstract: A polarizer includes a base substrate and a dielectric stacked layer. The dielectric stacked layer in includes a first dielectric layer and second dielectric layer. The first dielectric layer has a high refractive index and a second dielectric layer has a low refractive index. A wire grid pattern is disposed on the dielectric stacked layer. The wire grid pattern has a line width, a separation distance and a pitch. The pitch is a sum of the line width and the separation distance. Adjacent grids of the wire grid pattern are spaced apart by the separation distance.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: November 15, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Gun Nam, Moon-Jung An, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Atsushi Takakuwa
  • Publication number: 20160272791
    Abstract: A photo-curable resin composition includes a nano-particle. The nano-particle is surface-modified with an organic compound. The photo-curable resin composition includes a photo-polymerization initiator and a radical-reactive monomer.
    Type: Application
    Filed: December 7, 2015
    Publication date: September 22, 2016
    Inventor: ATSUSHI TAKAKUWA
  • Patent number: 9442236
    Abstract: A liquid crystal display includes a first substrate. A plurality of fine metal lines is disposed on the first substrate. The plurality of fine metal lines including a plurality of small regions. A second substrate is aligned with the first substrate. A light blocking portion is disposed on the second substrate. The light blocking portion is disposed in a region between the small regions of the plurality of small regions of the plurality of fine metal lines.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Atsushi Takakuwa, Dae Hwan Jang, Hyang-Shik Kong, Gug Rae Jo, Kyu Young Kim
  • Patent number: 9335582
    Abstract: A wire grid polarizer includes a substrate, a wire grid layer which is disposed on the substrate and includes a plurality of wire patterns arranged with a predetermined interval, where gaps are defined between the wire patterns, and a passivation layer which is disposed on the wire grid layer and includes first passivation particles which cover a top portion of the gaps.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 10, 2016
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon-yong Park, Sung-hoon Lee, Byung-hoon Kim, Jung-gun Nam, Dae-young Lee, Dae-hwan Jang, Gug-rae Jo, Atsushi Takakuwa
  • Patent number: 9329316
    Abstract: A wire grid polarizer includes: a substrate; a wire grid layer disposed on the substrate and including a plurality of wire patterns arranged at regular intervals; and a passivation layer disposed on the substrate to cover the wire grid layer and including a material having a refractive index less than 1.4.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: May 3, 2016
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon-yong Park, Jung-gun Nam, Byung-hoon Kim, Dae-young Lee, Sung-hoon Lee, Gug-rae Jo, Atsushi Takakuwa, Suk Gyu Hahm
  • Publication number: 20160077262
    Abstract: A method of fabricating a wire grid polarizer includes sequentially stacking a conductive wire pattern layer, a sacrificial layer, and an imprint pattern layer; patterning the imprint pattern layer; inspecting the patterned imprint pattern layer for a fault; and removing the sacrificial layer from the conductive wire pattern layer if the fault is present on the patterned imprint pattern layer.
    Type: Application
    Filed: February 13, 2015
    Publication date: March 17, 2016
    Inventor: Atsushi TAKAKUWA
  • Patent number: 9229137
    Abstract: A wire grid polarizer including a substrate, parallel conductive wire patterns which protrude from a top surface of the substrate, non-conductive wire patterns which are formed on the conductive wire patterns, respectively, and a protective layer which is formed on the conductive wire patterns and the non-conductive wire patterns. The protective layer includes first transparent particles having a diameter greater than a period of the conductive wire patterns, and spaces between the conductive wire patterns are filled with air or are evacuated to form a vacuum.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: January 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Atsushi Takakuwa, Jung Gun Nam, Moon Jung An, Eun Jung Kim, Gug Rae Jo
  • Patent number: 9223069
    Abstract: A polarizer includes a substrate having a first refractive index, a metal pattern disposed on the substrate, and a passivation layer disposed on the metal pattern. The metal pattern includes a plurality of protrusions having widths. The passivation layer has a second refractive index and covers at least one surface of the protrusions.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: December 29, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Hwan Jang, Jung-Gun Nam, Dae-Young Lee, Gug-Rae Jo, Hyung-Bin Cho, Atsushi Takakuwa
  • Patent number: 9195093
    Abstract: A polarizer includes an opening defined in the polarizer and through which light transmits; a non-opening which is adjacent to the opening and blocks the light; a plurality of metal lines elongated in a first direction, and separated from each other in a second direction different than the first direction, in the opening; and a plate-type pattern in the non-opening. A height of the metal lines is smaller than a height of the plate-type pattern, from a same reference; and an interval in the second direction and between adjacent metal lines is smaller than a wavelength of visible light rays.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: November 24, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Gun Nam, Dae-Young Lee, Dae Hwan Jang, Gug Rae Jo, Atsushi Takakuwa
  • Patent number: 9076697
    Abstract: A photoresist composition includes about 65% by weight to about 80% by weight of a mono-functional monomer, about 5% by weight to about 20% by weight of a di-functional monomer, about 1% by weight to about 10% by weight of a multi-functional monomer including three or more functional groups, about 1% by weight to about 5% by weight of a photoinitiator, and less than about 1% by weight of a surfactant, each based on a total weight of the photoresist composition.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki-Beom Lee, Dae-Hwan Jang, Atsushi Takakuwa
  • Patent number: 9001290
    Abstract: A polarizer includes a substrate, and a first metal layer and a second metal layer disposed on the substrate. The first metal layer includes a plurality of protrusions of a wire grid pattern. Each protrusion has a first width and adjacent protrusions are spaced apart by a second width. The second metal layer is disposed on each of the protrusions of the first metal layer, and includes molybdenum (Mo) and/or titanium (Ti).
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Young Lee, Moon-Jung An, Su-Mi Lee, Gug-Rae Jo, Eun-Jung Kim, Jung-Gun Nam, Dae-Hwan Jang, Hyung-Bin Cho, Atsushi Takakuwa
  • Publication number: 20150092140
    Abstract: A wire grid polarizer including a substrate, parallel conductive wire patterns which protrude from a top surface of the substrate, non-conductive wire patterns which are formed on the conductive wire patterns, respectively, and a protective layer which is formed on the conductive wire patterns and the non-conductive wire patterns. The protective layer includes first transparent particles having a diameter greater than a period of the conductive wire patterns, and spaces between the conductive wire patterns are filled with air or are evacuated to form a vacuum.
    Type: Application
    Filed: March 28, 2014
    Publication date: April 2, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Atsushi TAKAKUWA, Jung Gun Nam, Moon Jung An, Eun Jung Kim, Gug Rae Jo