Patents by Inventor Hiroshi Kiguchi

Hiroshi Kiguchi 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: 6833156
    Abstract: A method of manufacturing an organic EL element according to the present invention comprises the steps of forming pixel electrodes (801), (802), (803) on a transparent substrate (804) and forming on the pixel electrodes by patterning luminescent layers (806), (807), (808) made of an organic compound by means of an ink-jet method. According to this method, it is possible to carry out a high precise patterning easily and in a short time, thereby enabling to carry out optimization for a film design and luminescent characteristic easily as well as making it easy to adjust a luminous efficiency.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: December 21, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Miyashita, Hiroshi Kiguchi, Tatsuya Shimoda, Sadao Kanbe
  • Patent number: 6830855
    Abstract: The invention provides a color filter which includes a light shielding region having sufficient light shielding performance, and a transmitting region having no color mixing, and which has high contrast without pixel defect and irregularity in color tone. A color filter of the present invention can include a pixel region and a spotting precision test region. The pixel region includes a light shielding region and a transmitting region partitioned by the light shielding region. The light shielding region includes a first light shielding layer. The transmitting region includes a color element. The spotting precision test region is positioned apart from the pixel region and includes a second light shielding layer and a spotting precision test layer provided to cover at least the second light shielding layer. The spotting precision test layer region includes an evaluation region partitioned by the second light shielding layer.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: December 14, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Satoru Katagami, Tatsuya Ito, Hisashi Aruga
  • Patent number: 6825611
    Abstract: A bright color electroluminescent device that can be easily produced by using a fluorescent conversion substance; and a method of producing the same. A light emitting layer is doped with a fluorescent conversion substance with a concentration gradient. The method therefor includes an ink-jet method. The luminous efficiency is improved. The ink-jet method makes it very easy to pattern an organic layer in producing a color electroluminescent device and to lower the cost.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: November 30, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Hiroshi Kiguchi
  • Patent number: 6821553
    Abstract: A method of manufacturing an organic EL element according to the present invention comprises the steps of forming pixel electrodes (801), (802), (803) on a transparent substrate (804) and forming on the pixel electrodes by patterning luminescent layers (806), (807), (808) made of an organic compound by means of an ink-jet method. According to this method, it is possible to carry out a high precise patterning easily and in a short time, thereby enabling to carry out optimization for a film design and luminescent characteristic easily as well as making it easy to adjust a luminous efficiency.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 23, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Miyashita, Hiroshi Kiguchi, Tatsuya Shimoda, Sadao Kanbe
  • Publication number: 20040201048
    Abstract: Display devices such as EL elements or LED elements, or color filters, are provided, wherewith, when forming thin films such as organic semiconductor films or colored resins, there is remarkably little variation in film thickness from pixel to pixel. When fabricating thin film elements having banks of a prescribed height and a thin film layer formed by an ink jet method in areas to be coated that are partitioned by those banks, if the width of the banks is made a (&mgr;m), the height thereof is made c (&mgr;m), the width of the areas to be coated is made b (&mgr;m), and the diameter of the liquid droplets of the liquid material forming the thin film layer is made d (&mgr;m), the banks are formed on the substrate so as to satisfy the conditions that a>d/4, d/2<b<5d, c>t0 (where t0 (&mgr;m) is the film thickness of the thin film layer), and c>½×d/b.
    Type: Application
    Filed: October 17, 2003
    Publication date: October 14, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Shunichi Seki, Hiroshi Kiguchi, Ichio Yudasaka, Hiroo Miyajima
  • Publication number: 20040203180
    Abstract: A manufacturing method of an active matrix substrate which can prevent the complexity of manufacturing processes, widens the range of material choice and allows high manufacturing yield, and a manufacturing method of a liquid crystal display using such active matrix substrate. Conductive colored layers (606 to 608) functioning as pixel electrodes and color filters are formed by a process of discharging, by an ink jet method, a mixed ink of coloring material and conductive material to the formation area of a pixel electrode to be connected electrically to an active element (602).
    Type: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Satoru Katagami, Tomomi Kawase, Hisashi Aruga, Masaharu Shimizu
  • Publication number: 20040196220
    Abstract: The object of the invention is to simultaneously achieve a reduction in the off current of a switching thin-film transistor and an increase in the on current of a current thin-film transistor in a current-drive thin-film transistor display apparatus.
    Type: Application
    Filed: April 27, 2004
    Publication date: October 7, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Mutsumi Kimura, Hiroshi Kiguchi
  • Publication number: 20040169004
    Abstract: The present invention is a substrate for forming a patterned thin film by causing a specific fluid to adhere. More particularly, this substrate comprises a pattern formation region that is patterned in a specific shape in order to form a film. This pattern formation region is constituted such that an affinity region having an affinity to the fluid is disposed according to specific rules within a non-affinity region not having an affinity to the fluid. The fluid can be uniformly made to adhere to the required region, without spreading out too much or splitting up, allowing a uniform thin film to be formed.
    Type: Application
    Filed: March 10, 2004
    Publication date: September 2, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Sadao Kanbe, Shunichi Seki, Hitoshi Fukushima, Hiroshi Kiguchi
  • Patent number: 6783208
    Abstract: The invention makes uniform, in a plane, optical properties of optical members, such as the distribution properties of light transmission of a color filter, the color display properties of a liquid crystal device, and the light emission properties of an EL luminescent plane. During main scanning of color filter formation areas of a board in the X direction with an ink jet head having a nozzle row formed of a plurality of nozzles arranged in a row, a filter material is selectively discharged from the plurality of the nozzles to each of filer element areas arranged in a dot matrix to form filter elements, producing a color filter.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 31, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi
  • Patent number: 6753198
    Abstract: A manufacturing method of an active matrix substrate which can prevent the complexity of manufacturing processes, widens the range of material choice and allows high manufacturing yield, and a manufacturing method of a liquid crystal display using such active matrix substrate. Conductive colored layers (606 to 608) functioning as pixel electrodes and color filters are formed by a process of discharging, by an ink jet method, a mixed ink of coloring material and conductive material to the formation area of a pixel electrode to be connected electrically to an active element (602).
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: June 22, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Satoru Katagami, Tomomi Kawase, Hisashi Aruga, Masaharu Shimizu
  • Publication number: 20040100610
    Abstract: The present invention provides a method for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &dgr; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.
    Type: Application
    Filed: July 17, 2003
    Publication date: May 27, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi
  • Patent number: 6733868
    Abstract: The present invention is a substrate for forming a patterned thin film by causing a specific fluid to adhere. More particularly, this substrate comprises a pattern formation region that is patterned in a specific shape in order to form a film. This pattern formation region is constituted such that an affinity region having an affinity to the fluid is disposed according to specific rules within a non-affinity region not having an affinity to the fluid. The fluid can be uniformly made to adhere to the required region, without spreading out too much or splitting up, allowing a uniform thin film to be formed.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: May 11, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Sadao Kanbe, Shunichi Seki, Hitoshi Fukushima, Hiroshi Kiguchi
  • Publication number: 20040079768
    Abstract: [Object] To provide a device manufacturing apparatus in which a device can be precisely manufactured by stably ejecting a predetermined amount of droplets when the device is manufactured using a droplet ejecting device.
    Type: Application
    Filed: February 6, 2003
    Publication date: April 29, 2004
    Applicant: Seiko Epson Corporation
    Inventor: Hiroshi Kiguchi
  • Patent number: 6712661
    Abstract: A manufacturing method of an electroluminescence element of is provided, which causes a light emitting layer to emit light by applying a desired voltage between an anode and a cathode, with the light emitting layer in between, and obtains visible rays by wavelength-converting the emitted light using color changing media formed in individual pixel regions. The method consists of forming a partitioning member having openings corresponding to the pixel regions on a substrate, discharging color changing media precursors into the openings using a liquid drop discharge head, and forming the color changing media by solidifying the color changing media precursors discharged onto the substrate. With this method, it is possible to discharge the color changing media precursors while adjusting the doping ratio of color changing constituents of the color changing media precursors on the spot, thus making it easier to adjust color of the color changing media.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: March 30, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Hidekazu Kobayashi
  • Publication number: 20040048001
    Abstract: A pattern formation method for discharging a prescribed fluid onto a substrate form an ink-jet head and forming an arbitrary pattern. The method including the steps of discharging the fluid onto the substrate from an ink jet head and defining a pattern-forming region by subjecting the substrate to a specific treatment to prevent the fluid from spreading. The pattern forming region is formed after the fluid has been ejected so that the arbitrary pattern is formed in the fluid corresponding to the pattern-forming region. The treatment is one in which banks for preventing the fluid from flowing out are formed around the pattern-forming region. The method also includes removing the banks following the formation of the pattern.
    Type: Application
    Filed: May 27, 2003
    Publication date: March 11, 2004
    Inventors: Hiroshi Kiguchi, Hitoshi Fukushima, Satoshi Nebashi, Tatsuya Shimoda
  • Publication number: 20040038138
    Abstract: The color filter of the present invention comprises ink films colored by ink drops 140 inside openings 111 enclosed by banks 112 demarcated and formed on a substrate 110. The banks 112 have a laminar structure comprising a metal film 120 and a photosensitive organic thin film 130 from the substrate 110 side. The inks should contain a solvent having a high boiling point. The bank layer may also be configured so that the peripheral edges of the bottom surface thereof are positioned inside from the peripheral edges of the light blocking layers, so that the light blocking layers have exposed surfaces on the upper surface thereof where the bank layer is not superimposed. Thus color filters can be provided which exhibit outstanding contrast without coloring irregularities.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 26, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi Kiguchi, Natsuo Fujimori, Satoru Katagami, Masaharu Shimizu, Keiji Takizawa, Tadaaki Kuno
  • Patent number: 6696225
    Abstract: A method of manufacturing a substrate with a pattern showing hydrophilic property formed on a pattern surface comprising the steps of applying a silane coupling agent to the pattern surface of the base and forming a silane coupling film, forming a mask conforming to the pattern to be provided on the silane coupling film, and activating the silane coupling film provided with the mask by applying energy thereto in order to generate a polar group. In the regions where masking could not be performed, a polar group such as the hydroxyl group, carboxyl group, amino group, or amino carboxyl group is generated and shows hydrophilic property. The masked regions comprise hydrophobic property. This substrate functions as a universal substrate suitable for forming patterns with the inkjet system.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: February 24, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Sadao Kanbe, Hitoshi Fukushima, Hiroshi Kiguchi, Syunichi Seki
  • Publication number: 20040032480
    Abstract: The present invention provides a method for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &dgr; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.
    Type: Application
    Filed: July 17, 2003
    Publication date: February 19, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi
  • Publication number: 20040012857
    Abstract: The invention provides a method of producing a transmissive screen having a structure including light-absorption-material patterns that are formed on locations corresponding to locations of lens members, which are provided side by side on a light-transmissive substrate, and to locations of boundary portions between the corresponding lens members. In this method, lens compositions are discharged onto and are caused to land on the light transmissive substrate, and, by drops of the lens compositions, very small lens members or precursors thereof are formed. It is possible to provide a method of producing a transmissive screen, which makes it possible to realize, at a low cost, a bright transmissive screen which has high contrast ratio and which can display a high-quality image having reduced or no moiré and reduced or no speckles.
    Type: Application
    Filed: July 16, 2003
    Publication date: January 22, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Shoichi Uchiyama, Satoru Miyashita, Hiroshi Kiguchi, Hironori Hasei
  • Patent number: 6660332
    Abstract: A method is provided for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &dgr; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: December 9, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi