Patents by Inventor Kazumi Aruga

Kazumi Aruga 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: 7370926
    Abstract: A liquid droplet ejection method comprises: ejecting a liquid droplet of a functional liquids onto a substrate while scanning relatively the substrate and an ejection head. A plurality of kinds of functional liquids have different drying rates and are ejected onto respective different positions in respective scanning directions during the same scanning operation. Scanning regions of the plurality of kinds of the functional liquids at least partly are overlapped each other.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: May 13, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Kato, Kazumi Aruga
  • Patent number: 7350899
    Abstract: In the discharge apparatus, a stage on which a substrate having target discharge areas is placed moves relative to a discharge head unit. When at least one of a plurality of first discharge nozzles of the discharge head unit reaches one of the target discharge areas, the first nozzle discharges a first droplet of fluid material to the target discharge area. When one of a plurality of second nozzles of the discharge head unit reaches the target discharge area to which the first droplet has been discharged, the second nozzle discharges a second droplet of the fluid material to the target discharge area. A first nozzle row of the first nozzles and a second nozzle row of the second nozzles are separated by a predetermined distance in a direction of the relative movement of the stage and the discharge head unit.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: April 1, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Mitsuru Kuribayashi, Kazumi Aruga
  • Publication number: 20070195231
    Abstract: A liquid crystal device includes an electrode substrate including a plurality of pixel electrodes; a counter substrate facing the electrode substrate; a color filter including a color element facing each of the plurality of pixel electrodes; liquid crystal supported between the electrode substrate and the counter substrate; and an alignment controlling means extending on a face, which contacts the liquid crystal, of at least one of the electrode substrate and the counter substrate. The color element has four or more colors, and an extending direction of the alignment controlling means formed on a position corresponding to the color element of any color of at least three predetermined colors of the four or more colors is determined in each color, and is different in each color.
    Type: Application
    Filed: January 8, 2007
    Publication date: August 23, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mitsuru KURIBAYASHI, Kazumi ARUGA, Akira INAGAKI
  • Publication number: 20070195232
    Abstract: A liquid crystal display includes a first substrate, a second substrate disposed in a position opposite to the first substrate, a liquid crystal interposed between the first and second substrates, a plurality of color element regions provided on the second substrate, and a light shield formed so as to surround the color element regions. A width of the light shield varying depending on the color element region.
    Type: Application
    Filed: January 8, 2007
    Publication date: August 23, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mitsuru KURIBAYASHI, Kazumi ARUGA, Akira INAGAKI
  • Publication number: 20070195229
    Abstract: A liquid crystal device includes: an electrode substrate having a plurality of pixel electrodes; an opposing substrate facing the electrode substrate; a color filter having a color element each facing each of the plurality of pixel electrodes; a liquid crystal sandwiched between the electrode substrate and the opposing substrate; and an alignment-control unit extending on a surface having contact with the liquid crystal in at least one of the electrode substrate and the opposing substrate. Colors for the color element include four or more colors and the alignment-control unit extends along a same direction in each position corresponding to the color element for at least any of predetermined three of the four or more colors.
    Type: Application
    Filed: January 4, 2007
    Publication date: August 23, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mitsuru KURIBAYASHI, Kazumi ARUGA, Akira INAGAKI
  • Publication number: 20070195230
    Abstract: A liquid crystal device includes an electrode substrate having a plurality of pixel electrodes; an opposing substrate opposing the electrode substrate; a color filter having color elements colored with four colors or more, each color element opposing each of the pixel electrodes; a liquid crystal disposed between the electrode substrate and the opposing substrate; and an alignment control member extending on a face of at least one of the electrode substrate or the opposing substrate, the face contacting with the liquid crystal, wherein the alignment control member is formed in a position where corresponds to the color element colored with one of at least predetermined three colors among the four colors or more, and an area of which the alignment control member extends is determined by color and differs among the colors.
    Type: Application
    Filed: January 4, 2007
    Publication date: August 23, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mitsuru KURIBAYASHI, Kazumi ARUGA, Akira INAGAKI
  • Publication number: 20070003689
    Abstract: A droplet discharge method includes performing a plurality of scans in which a discharge head and a substrate are scanned relative to each other, discharging droplets of a plurality of types of functional liquid from the discharge head onto a plurality of prescribed portions on the substrate that are arranged in a matrix while the discharge head and the substrate are scanned. The discharging of the droplets includes discharging the droplets onto the prescribed portions over the plurality of scans so that centers of newly discharged droplets are made to land at one of positions that overlap with centers of landing positions of the droplets already discharged to the prescribed portions and positions that are offset in a row direction and in a column direction of the matrix from the centers of the landing positions of the droplets already discharged to the prescribed portions.
    Type: Application
    Filed: June 13, 2006
    Publication date: January 4, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Tsuyoshi Kato, Kazumi Aruga
  • Publication number: 20060290764
    Abstract: A droplet discharge method includes performing a plurality of scans in which a discharge head and a substrate are scanned relative to each other, and discharging droplets of a plurality of types of functional liquid from the discharge head onto a plurality of prescribed portions on the substrate configured and arranged to hold the discharged functional liquid while the discharge head and the substrate are scanned. The performing of the plurality of scans includes performing at least one full discharge scan for each of the prescribed portions so that the functional liquid is discharged over an entire region of each of the prescribed portions, and performing a partial discharge scan so that the functional liquid is discharged so as to avoid at least part of peripheral edges of the prescribed portions.
    Type: Application
    Filed: May 30, 2006
    Publication date: December 28, 2006
    Applicant: Seiko Epson Corporation
    Inventors: Nobuaki Nagae, Kazumi Aruga
  • Publication number: 20060290839
    Abstract: A backlight unit including: a light source that irradiates light; and a diffusing plate that diffuses the light irradiated from the light source, wherein the diffusing plate is provided with a first microlens of ellipsoid form, and a second microlens of ellipsoid form disposed in such a manner that long axes of the first microlens and the second microlens are approximately perpendicular to each other, and a long axis direction of the first microlens and a long axis direction of the light source are arranged approximately parallel to each other, and a long axis direction of the second microlens and the long axis direction of the light source are arranged approximately perpendicular to each other.
    Type: Application
    Filed: June 12, 2006
    Publication date: December 28, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hironori HASEI, Akira INAGAKI, Kazumi ARUGA
  • Publication number: 20060290724
    Abstract: A color element forming method includes providing a liquid droplet ejection apparatus having a moving section configured and arranged to relatively move a plurality of liquid droplet ejection heads with respect to a substrate in a state where the liquid droplet ejection heads and the substrate are disposed facing each other. The method further includes ejecting a plurality of types of liquids including color element materials from nozzles of the liquid droplet ejection heads in a drawing region of the substrate including a plurality of color element regions segmented by a plurality of partition wall portions in synchronization with main scanning conducted for a plurality of times by the moving section to draw a plurality of types of color elements in the color element regions of the substrate. The method further includes hypothetically dividing the drawing region of the substrate into a plurality of partial drawing regions.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 28, 2006
    Applicant: Seiko Epson Corporation
    Inventors: Nobuaki Nagae, Kazumi Aruga
  • Publication number: 20060279201
    Abstract: A droplet discharge method includes discharging a droplet of a functional liquid on a discharged material receiver provided on a substrate from a plurality of nozzles in a plurality of discharge heads while the plurality of discharge heads relatively scan the substrate. The size of a discharge area formed of the plurality of nozzles in a first direction perpendicular to a second direction in which the plurality of discharge heads relatively scan the substrate is larger than the size of the discharged material receiver in the first direction. If the whole of the discharged material receiver is covered by the discharge area, a droplet of the functional liquid is discharged from the plurality of nozzles to the discharged material receiver, and if at least part of the discharged material receiver is not covered by the discharge area, a droplet of the functional liquid is not discharged from the plurality of nozzles to the discharged material receiver.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 14, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Nobuaki NAGAE, Kazumi ARUGA
  • Publication number: 20060279200
    Abstract: A method for discharging droplets includes: discharging droplets of a plurality of variations of functional liquids by a plurality of discharge heads, on a coated area from a plurality of nozzles installed in each of the discharge heads, while scanning relatively over the coated area provided on a substrate; wherein a location of the nozzles is shifted in an orthogonal direction for each of the discharge heads, the nozzles being installed in an orthogonal direction on both edges whose direction is approximately orthogonal to a scanning direction, and, at the same time, the plurality of nozzles being arranged in each of the discharge heads, so that an overlapped discharge area, where discharge areas of all variations of the functional liquid overlap upon scanning, is formed; and wherein the discharge heads perform scanning so that the overlapped discharge area includes at least part of the coated area that is provided along a side that extends in the scanning direction, when discharging droplets of the functio
    Type: Application
    Filed: June 9, 2006
    Publication date: December 14, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Nobuaki NAGAE, Kazumi ARUGA
  • Publication number: 20060268037
    Abstract: A liquid droplet ejection method comprises: ejecting a liquid droplet of a functional liquids onto a substrate while scanning relatively the substrate and an ejection head. A plurality of kinds of functional liquids have different drying rates and are ejected onto respective different positions in respective scanning directions during the same scanning operation. Scanning regions of the plurality of kinds of the functional liquids at least partly are overlapped each other.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tsuyoshi KATO, Kazumi ARUGA
  • Publication number: 20060181555
    Abstract: A method of controlling a liquid droplet ejection apparatus includes: a pressure detecting step of detecting whether the pressure inside a functional liquid tank is below a lower-limit pressure of a working pressure or not; a step of confirming, when the pressure inside the functional liquid tank is below the lower-limit pressure, whether a functional liquid droplet ejection head is in imaging operation or not; and a pressurization control step of, upon confirmation that the functional liquid droplet ejection head is not in imaging operation, pressurizing the functional liquid tank to an upper-limit pressure of the working pressure.
    Type: Application
    Filed: January 24, 2006
    Publication date: August 17, 2006
    Inventors: Hidenori Usuda, Kazumi Aruga
  • Publication number: 20050156978
    Abstract: In the discharge apparatus, a stage on which a substrate having target discharge areas is placed moves relative to a discharge head unit. When at least one of a plurality of first discharge nozzles of the discharge head unit reaches one of the target discharge areas, the first nozzle discharges a first droplet of fluid material to the target discharge area. When one of a plurality of second nozzles of the discharge head unit reaches the target discharge area to which the first droplet has been discharged, the second nozzle discharges a second droplet of the fluid material to the target discharge area. A first nozzle row of the first nozzles and a second nozzle row of the second nozzles are separated by a predetermined distance in a direction of the relative movement of the stage and the discharge head unit.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 21, 2005
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Kazumi Aruga, Mitsuru Kuribayashi