Patents by Inventor Koji Ichimura

Koji Ichimura 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).

  • Publication number: 20220236642
    Abstract: A template and a template blank are used for imprint lithography transferring a transfer pattern in a concave and convex structure to a resin on a transfer substrate, in which a first step structure is formed on a main surface of a base, a second step structure is formed on the first step structure, and an outside region of the second step structure on an upper surface of the first step structure is covered with a light shielding film to solve the above problem.
    Type: Application
    Filed: April 18, 2022
    Publication date: July 28, 2022
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu NAGAI, Katsutoshi SUZUKI, Koji ICHIMURA, Kouji YOSHIDA
  • Patent number: 11353789
    Abstract: An imprint method using a mold and/or a transfer substrate having a mesa structure includes a resin supply step, a contact step, a curing step, and a mold release step. In the resin supply step, a balance layer is formed by supplying a molded resin also to an area outside of a pattern formation area of the transfer substrate in which a pattern structure is to be formed.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 7, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu Nagai, Yuichi Inazuki, Katsutoshi Suzuki, Ryugo Hikichi, Koji Ichimura, Saburou Harada
  • Patent number: 11340526
    Abstract: A template and a template blank are used for imprint lithography transferring a transfer pattern in a concave and convex structure to a resin on a transfer substrate, in which a first step structure is formed on a main surface of a base, a second step structure is formed on the first step structure, and an outside region of the second step structure on an upper surface of the first step structure is covered with a light shielding film to solve the above problem.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 24, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu Nagai, Katsutoshi Suzuki, Koji Ichimura, Kouji Yoshida
  • Publication number: 20190384169
    Abstract: An imprint method using a mold and/or a transfer substrate having a mesa structure includes a resin supply step, a contact step, a curing step, and a mold release step. In the resin supply step, a balance layer is formed by supplying a molded resin also to an area outside of a pattern formation area of the transfer substrate in which a pattern structure is to be formed.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 19, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu NAGAI, Yuichi INAZUKI, Katsutoshi SUZUKI, Ryugo HIKICHI, Koji ICHIMURA, Saburou HARADA
  • Patent number: 10429732
    Abstract: An imprint method using a mold and/or a transfer substrate having a mesa structure includes a resin supply step, a contact step, a curing step, and a mold release step. In the resin supply step, a balance layer is formed by supplying a molded resin also to an area outside of a pattern formation area of the transfer substrate in which a pattern structure is to be formed.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: October 1, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu Nagai, Yuichi Inazuki, Katsutoshi Suzuki, Ryugo Hikichi, Koji Ichimura, Saburou Harada
  • Patent number: 10265724
    Abstract: An imprint mold has a base, an uneven structure area set on a surface of the base, a measurement area set in the uneven structure area, and a measurement mark structure positioned in the measurement area, the measurement mark structure having a plurality of pattern sets each having a line/space shape. With this, a deformation occurring in a resin layer at the time of release of the resin layer from the mold is prevented, and a measurement mark can be formed with high accuracy.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: April 23, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naoko Nakata, Kouji Yoshida, Naoshi Kawamata, Takaharu Nagai, Koji Ichimura
  • Publication number: 20190086798
    Abstract: A template and a template blank are used for imprint lithography transferring a transfer pattern in a concave and convex structure to a resin on a transfer substrate, in which a first step structure is formed on a main surface of a base, a second step structure is formed on the first step structure, and an outside region of the second step structure on an upper surface of the first step structure is covered with a light shielding film to solve the above problem.
    Type: Application
    Filed: May 24, 2017
    Publication date: March 21, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu NAGAI, Katsutoshi SUZUKI, Koji ICHIMURA, Kouji YOSHIDA
  • Publication number: 20170235221
    Abstract: An imprint method using a mold and/or a transfer substrate having a mesa structure includes a resin supply step, a contact step, a curing step, and a mold release step. In the resin supply step, a balance layer is formed by supplying a molded resin also to an area outside of a pattern formation area of the transfer substrate in which a pattern structure is to be formed.
    Type: Application
    Filed: March 11, 2015
    Publication date: August 17, 2017
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takaharu NAGAI, Yuichi INAZUKI, Katsutoshi SUZUKI, Ryugo HIKICHI, Koji ICHIMURA, Saburou HARADA
  • Publication number: 20170106408
    Abstract: An imprint mold has a base 2, an uneven structure area A set on a surface 2a of the base 2, a measurement area 6 set in the uneven structure area A, and a measurement mark structure 7 positioned in the measurement area 6, the measurement mark structure 7 having a plurality of pattern sets 7a each having a line/space shape. With this, a deformation occurring in a resin layer at the time of release of the resin layer from the mold is prevented, and a measurement mark can be formed with high accuracy.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 20, 2017
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naoko NAKATA, Kouji YOSHIDA, Naoshi KAWAMATA, Takaharu NAGAI, Koji ICHIMURA
  • Patent number: 9024312
    Abstract: Disclosed is a substrate for a flexible device which, when a TFT is produced on a flexible substrate in which a metal layer and a polyimide layer are laminated, can suppress deterioration of the electrical performance of the TFT due to the surface irregularities of the metal foil surface and can suppress detachment or cracks of the TFT. Also disclosed is a substrate for a thin film element which has excellent surface smoothness and is capable of suppressing deterioration of the characteristics of thin film elements. Also disclosed are methods for manufacturing substrates for thin film elements.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: May 5, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shunji Fukuda, Katsuya Sakayori, Keita Arihara, Koji Ichimura, Kei Amagai
  • Publication number: 20120187399
    Abstract: Disclosed is a substrate for a flexible device which, when a TFT is produced on a flexible substrate in which a metal layer and a polyimide layer are laminated, can suppress deterioration of the electrical performance of the TFT due to the surface irregularities of the metal foil surface and can suppress detachment or cracks of the TFT. Also disclosed is a substrate for a thin film element which has excellent surface smoothness and is capable of suppressing deterioration of the characteristics of thin film elements. Also disclosed are methods for manufacturing substrates for thin film elements.
    Type: Application
    Filed: September 29, 2010
    Publication date: July 26, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shunji Fukuda, Katsuya Sakayori, Keita Arihara, Koji Ichimura, Kei Amagai
  • Patent number: 7369198
    Abstract: In a reflection-type liquid crystal display panel (10) provided with reflective electrodes (13a), a reflective metal film (13a) is formed on an insulating layer (12) having a surface provided with minute irregularities (17) to form the reflective metal electrodes having surfaces of a shape substantially complementary to the minute irregularities. Since the surfaces of the electrodes (13a) are provided with minute irregularities, external light incident on the liquid crystal display panel is not reflected in a specular reflection mode, so that images are displayed on the liquid crystal display panel in satisfactory visibility. The insulating layer is formed by forming a positive photosensitive resin layer on a back substrate (10a), exposing the positive photosensitive resin layer to light through a transparent sheet (18) having a surface provided with minute irregularities, and subjecting the exposed positive photosensitive resin layer to a developing process.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: May 6, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Koji Ichimura
  • Patent number: 7348041
    Abstract: A low refractive index SiO2 film is provided which uses a starting material for forming an SiO2 film and has a lower refractive index than the conventional SiO2 film. A starting material gas comprising a gas containing a fluorine atom, a gas containing a silicon atom and an alkyl group having 1 to 4 carbon atoms or an alkyl group having 1 to 4 carbon atoms with a part or the whole of hydrogen atoms substituted by a fluorine atom, and a gas containing an oxygen atom is subjected to plasma CVD in a vacuum chamber 1 to form an SiO2 film on a web 2 in a plasma zone 5.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: March 25, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Koji Ichimura
  • Patent number: 6882387
    Abstract: In a reflection-type liquid crystal display panel (10) provided with reflective electrodes (13a), a reflective metal film (13a) is formed on an insulating layer (12) having a surface provided with minute irregularities (17) to form the reflective metal electrodes having surfaces of a shape substantially complementary to the minute irregularities. Since the surfaces of the electrodes (13a) are provided with minute irregularities, external light incident on the liquid crystal display panel is not reflected in a specular reflection mode, so that images are displayed on the liquid crystal display panel in satisfactory visibility. The insulating layer is formed by forming a positive photosensitive resin layer on a back substrate (10a), exposing the positive photosensitive resin layer to light through a transparent sheet (18) having a surface provided with minute irregularities, and subjecting the exposed positive photosensitive resin layer to a developing process.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: April 19, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Koji Ichimura
  • Publication number: 20050052598
    Abstract: In a reflection-type liquid crystal display panel (10) provided with reflective electrodes (13a), a reflective metal film (13a) is formed on an insulating layer (12) having a surface provided with minute irregularities (17) to form the reflective metal electrodes having surfaces of a shape substantially complementary to the minute irregularities. Since the surfaces of the electrodes (13a) are provided with minute irregularities, external light incident on the liquid crystal display panel is not reflected in a specular reflection mode, so that images are displayed on the liquid crystal display panel in satisfactory visibility. The insulating layer is formed by forming a positive photosensitive resin layer on a back substrate (10a), exposing the positive photosensitive resin layer to light through a transparent sheet (18) having a surface provided with minute irregularities, and subjecting the exposed positive photosensitive resin layer to a developing process.
    Type: Application
    Filed: October 18, 2004
    Publication date: March 10, 2005
    Inventor: Koji Ichimura
  • Patent number: 6838197
    Abstract: A silica layer is provided which is usable as a low refractive index layer undergoing no change in its refractive index. Further, a silica layer is provided which is highly productive and usable as a medium or high refractive index layer undergoing neither reduction in transmittance nor change in spectral colors. Still further, an antireflection film using these silica layers is provided.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: January 4, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tatsuji Nakajima, Koji Ichimura
  • Publication number: 20040157061
    Abstract: A low refractive index SiO2 film is provided which uses a starting material for forming an SiO2 film and has a lower refractive index than the conventional SiO2 film.
    Type: Application
    Filed: April 9, 2003
    Publication date: August 12, 2004
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventor: Koji Ichimura
  • Publication number: 20040018362
    Abstract: A silica layer is provided which is usable as a low refractive index undergoing no change in its refractive index. Further, a silica layer is provided which is highly productive and usable as a medium or high refractive index layer undergoing neither reduction in transmittance nor change in spectral colors. Still further, an antireflection film using these silica layers is provided. These silica layers are: a silica layer composed of an organic silicon compound, which has a refractive index of not less than 1.40 and not more than 1.46 (&lgr;=550 nm), and whose composition is represented by SiOxCy: H (x=1.6 to 1.9, y=0.2 to 1.0); a carbon-containing silica layer, which has a, refractive index of not less than 1.55 and less than 1.80 (&lgr;=550 nm), and whose composition is represented by SioaCb (a=0.7 to 1.7, b=0.2 to 1.4) ; and a silica layer containing carbon, which has a refractive index of not less than 1.80 and not more than 2.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Inventors: Tatsuji Nakajima, Koji Ichimura
  • Publication number: 20020090521
    Abstract: A silica layer is provided which is usable as a low refractive index undergoing no change in its refractive index. Further, a silica layer is provided which is highly productive and usable as a medium or high refractive index layer undergoing neither reduction in transmittance nor change in spectral colors. Still further, an antireflection film using these silica layers is provided. These silica layers are: a silica layer composed of an organic silicon compound, which has a refractive index of not less than 1.40 and not more than 1.46 (&lgr;=550 nm), and whose composition is represented by SiOxCy:H (x=1.6 to 1.9, y=0.2 to 1.0); a carbon-containing silica layer, which has a refractive index of not less than 1.55 and less than 1.80 (&lgr;=550 nm), and whose composition is represented by SioaCb (a=0.7 to 1.7, b=0.2 to 1.4); and a silica layer containing carbon, which has a refractive index of not less than 1.80 and not more than 2.
    Type: Application
    Filed: September 28, 2001
    Publication date: July 11, 2002
    Inventors: Tatsuji Nakajima, Koji Ichimura
  • Publication number: 20020036734
    Abstract: In a reflection-type liquid crystal display panel (10) provided with reflective electrodes (13a), a reflective metal film (13a) is formed on an insulating layer (12) having a surface provided with minute irregularities (17) to form the reflective metal electrodes having surfaces of a shape substantially complementary to the minute irregularities. Since the surfaces of the electrodes (13a) are provided with minute irregularities, external light incident on the liquid crystal display panel is not reflected in a specular reflection mode, so that images are displayed on the liquid crystal display panel in satisfactory visibility. The insulating layer is formed by forming a positive photosensitive resin layer on a back substrate (10a), exposing the positive photosensitive resin layer to light through a transparent sheet (18) having a surface provided with minute irregularities, and subjecting the exposed positive photosensitive resin layer to a developing process.
    Type: Application
    Filed: November 5, 2001
    Publication date: March 28, 2002
    Inventor: Koji Ichimura