Patents by Inventor Mamoru Ishizaki

Mamoru Ishizaki 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: 11709406
    Abstract: A thin-film transistor array includes an insulating substrate and pixels each including a thin-film transistor, a pixel electrode, and a capacitor electrode, the pixels being formed in a matrix and located at positions where column wirings extending in a column direction intersect row wirings perpendicular to the column wirings and extending in a row direction. The thin-film transistor includes a gate electrode, a source electrode, a drain electrode, and a semiconductor pattern formed between the source electrode and the drain electrode. The pixel electrode includes two electrically conductive layers which are a lower layer electrode serving as a lower pixel electrode, and an upper layer electrode serving as an upper pixel electrode. The corresponding one of the column wirings is at a position which has no overlap with the capacitor electrode and the lower pixel electrode, and has an overlap with the upper pixel electrode, in the lamination direction.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: July 25, 2023
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru Ishizaki
  • Patent number: 11467465
    Abstract: A reflective display apparatus including a reflective display portion which is two-dimensionally divided into pixels each having subpixels and changes reflectance of each subpixel based on an image signal, and colored layers facing the reflective display portion and partially overlapping the pixels as viewed in a facing direction in which the colored layers face the reflective display portion. The colored layers include traversing colored layers that overlap more than one of the subpixels as viewed in the facing direction, and the colored layers are positioned such that at most one of the colored layers overlaps one of the subpixels as viewed in the facing direction.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: October 11, 2022
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Tomoko Tsuruda, Mamoru Ishizaki
  • Patent number: 11264406
    Abstract: A thin-film transistor array including an insulating substrate, a gate insulating film sandwiched between a first structure and a second structure, the first structure including a gate electrode, a gate wire connected to the gate electrode, a capacitor electrode, and a capacitor wire connected to the capacitor electrode, and the second structure including a source electrode, a source wire connected to the source electrode, a drain electrode, and a pixel electrode connected to the drain electrode, a resistor inserted between parts of the capacitor wire, and a semiconductor layer formed between the source electrode and the drain electrode. The pixel electrode is positioned over the capacitor electrode with the gate insulating film positioned therebetween and has a storage capacitance, and the source electrode and the drain electrode are positioned over the gate electrode with the gate insulating film positioned therebetween.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: March 1, 2022
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru Ishizaki
  • Publication number: 20210263356
    Abstract: A thin-film transistor array includes an insulating substrate and pixels each including a thin-film transistor, a pixel electrode, and a capacitor electrode, the pixels being formed in a matrix and located at positions where column wirings extending in a column direction intersect row wirings perpendicular to the column wirings and extending in a row direction. The thin-film transistor includes a gate electrode, a source electrode, a drain electrode, and a semiconductor pattern formed between the source electrode and the drain electrode. The pixel electrode includes two electrically conductive layers which are a lower layer electrode serving as a lower pixel electrode, and an upper layer electrode serving as an upper pixel electrode. The corresponding one of the column wirings is at a position which has no overlap with the capacitor electrode and the lower pixel electrode, and has an overlap with the upper pixel electrode, in the lamination direction.
    Type: Application
    Filed: May 12, 2021
    Publication date: August 26, 2021
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru ISHIZAKI
  • Publication number: 20210183903
    Abstract: A thin film transistor array includes column wirings extending in a first direction, row wirings extending in a second direction, capacitor wirings, and pixels formed in a matrix. Each pixel includes a thin film transistor, a pixel electrode, and a capacitor electrode. The pixels form a rectangular effective region of an M column by N row matrix structure in which N pixels are formed in the first direction and M pixels are formed in the second direction, where M and N are natural numbers, the row wirings each have a length extending across the M pixels formed in the second direction in the effective region, the column wirings each have a length extending across the N/2 pixels formed in the first direction in the effective region, and the capacitor wirings each have a length which extends across the N pixels formed in the first direction in the effective region.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Mamoru ISHIZAKI, Katsuhiko MOROSAWA
  • Publication number: 20210183902
    Abstract: A thin film transistor array includes column wirings and row wirings formed on an insulating substrate and extending perpendicularly to each other, and pixels formed at crossing points of the column and row wirings. Each of the pixels includes a pixel electrode and a thin film transistor that includes a gate electrode, a source electrode, a drain electrode, and a semiconductor pattern. The source electrode has a linear shape having a constant width in a plan view, the drain electrode includes a U-shaped portion positioned around the source electrode such that a gap is formed between the U-shaped portion and the source electrode in the plan view, the semiconductor pattern connects at least the source electrode and the drain electrode such that a channel region is formed, and the gate electrode overlaps the channel region via a gate insulating film and includes the channel region in the plan view.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru ISHIZAKI
  • Patent number: 10901288
    Abstract: A display device including a pair of substrates having surfaces facing each other and electrodes formed on the surfaces, respectively, a display medium having a memory effect and formed between the pair of substrates, and a drive unit that applies a drive voltage to the display medium. The display medium includes charged particles encapsulated therein such that movement of the charged particles based on a voltage applied by the drive unit provides display, and the charged particles include first particles for displaying a first color with application of a first voltage, second particles for displaying a second color with application of a second voltage having a polarity different from a polarity of the first voltage, and third particles for displaying a third color with application of a third voltage which has the same polarity as the polarity of the first voltage and an absolute value smaller than an absolute value of the first voltage.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: January 26, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Takehisa Takada, Mamoru Ishizaki
  • Patent number: 10634963
    Abstract: A thin-film transistor array including an insulating substrate, gate lines formed on the insulating substrate, source lines formed on the insulating substrate, and transistors each being formed on the insulating substrate at a position corresponding to a respective intersection of the gate lines and the source lines, and formed in a matrix including pixels in rows and columns, each of the transistors including a gate electrode connected to each of the gate lines, a source electrode connected to each of the source lines, a drain electrode, and a pixel electrode connected to the drain electrode. Each of the source lines is connected to a column of pixels, and each of the gate lines includes a first portion connected to a predetermined number of pixels in a row and a second portion connected to pixels in an adjacent row.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 28, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru Ishizaki
  • Patent number: 10629654
    Abstract: A thin film transistor array formed substrate including a gate electrode, a gate insulation layer, a source wiring structure including a source wiring and a source electrode, a drain electrode, a pixel electrode connected to the drain electrode, a semiconductor layer formed in a stripe shape having a longitudinal side extending in a direction that the source wiring extends, and a protection layer formed to cover an entire portion of the semiconductor layer. The source wiring structure has notch portions positioned in the direction that the source wiring extends such that the notch portions overlap with the gate electrode, the source wiring has a first portion having a first width where the notch portions are formed and a second portion having a second width larger than the first width where no notch portions are formed, and the source wiring has an opening in the second portion.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: April 21, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Hina Chujo, Mamoru Ishizaki
  • Publication number: 20190331979
    Abstract: A display device including a pair of substrates having surfaces facing each other and electrodes formed on the surfaces, respectively, a display medium having a memory effect and formed between the pair of substrates, and a drive unit that applies a drive voltage to the display medium. The display medium includes charged particles encapsulated therein such that movement of the charged particles based on a voltage applied by the drive unit provides display, and the charged particles include first particles for displaying a first color with application of a first voltage, second particles for displaying a second color with application of a second voltage having a polarity different from a polarity of the first voltage, and third particles for displaying a third color with application of a third voltage which has the same polarity as the polarity of the first voltage and an absolute value smaller than an absolute value of the first voltage.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 31, 2019
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Takehisa TAKADA, Mamoru ISHIZAKI
  • Publication number: 20190271878
    Abstract: A reflective display apparatus including a reflective display portion which is two-dimensionally divided into pixels each having subpixels and changes reflectance of each subpixel based on an image signal, and colored layers facing the reflective display portion and partially overlapping the pixels as viewed in a facing direction in which the colored layers face the reflective display portion. The colored layers include traversing colored layers that overlap more than one of the subpixels as viewed in the facing direction, and the colored layers are positioned such that at most one of the colored layers overlaps one of the subpixels as viewed in the facing direction.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 5, 2019
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Tomoko TSURUDA, Mamoru ISHIZAKI
  • Patent number: 10141349
    Abstract: A thin-film transistor array includes thin-film transistors each including an insulating substrate which is formed with a gate electrode, a gate wiring, a capacitor electrode and a capacitor wiring. A source electrode and a drain electrode having a gap therebetween and including a semiconductor pattern are formed, in a region overlapping with the gate electrode on the substrate via a gate insulator, with the semiconductor pattern being covered with a protective layer. Two such TFTs are independently formed for each pixel. In each pixel, two source electrodes are separately connected to two respective source wirings, and two drain electrodes are connected to an electrode of the pixel via individual drain-connecting electrodes. The array includes source-connecting electrodes each connecting between the source electrodes of the two TFTs formed for each pixel. The same drive waveform is applied to the two source wirings.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 27, 2018
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru Ishizaki
  • Patent number: 10038014
    Abstract: A thin film transistor array including a gate wiring connected to a gate electrode and extended in a first direction, a source wiring connected to a source electrode, a drain electrode having a gap from the source electrode, a semiconductor pattern formed at least in a portion corresponding to the gap between the source and drain electrodes, the semiconductor pattern having a region defined by extending the portion in a second direction perpendicular to the first direction, and a pixel electrode that overlaps with a capacitor electrode in the planar view. In the planar view, the drain electrode has a shape of a single line, the source electrode has a first portion in a line shape and a second portion in a sheath shape surrounding the drain electrode and keeping a space from the drain electrode, and the source wiring is narrower than the region of the semiconductor pattern.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: July 31, 2018
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru Ishizaki
  • Publication number: 20180203270
    Abstract: A thin-film transistor array including an insulating substrate, gate lines formed on the insulating substrate, source lines formed on the insulating substrate, and transistors each being formed on the insulating substrate at a position corresponding to a respective intersection of the gate lines and the source lines, and formed in a matrix including pixels in rows and columns, each of the transistors including a gate electrode connected to each of the gate lines, a source electrode connected to each of the source lines, a drain electrode, and a pixel electrode connected to the drain electrode. Each of the source lines is connected to a column of pixels, and each of the gate lines includes a first portion connected to a predetermined number of pixels in a row and a second portion connected to pixels in an adjacent row.
    Type: Application
    Filed: March 15, 2018
    Publication date: July 19, 2018
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru ISHIZAKI
  • Publication number: 20180061892
    Abstract: A thin film transistor array formed substrate including a gate electrode, a gate insulation layer, a source wiring structure including a source wiring and a source electrode, a drain electrode, a pixel electrode connected to the drain electrode, a semiconductor layer formed in a stripe shape having a longitudinal side extending in a direction that the source wiring extends, and a protection layer formed to cover an entire portion of the semiconductor layer. The source wiring structure has notch portions positioned in the direction that the source wiring extends such that the notch portions overlap with the gate electrode, the source wiring has a first portion having a first width where the notch portions are formed and a second portion having a second width larger than the first width where no notch portions are formed, and the source wiring has an opening in the second portion.
    Type: Application
    Filed: October 23, 2017
    Publication date: March 1, 2018
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Hina CHUJO, Mamoru Ishizaki
  • Publication number: 20180024391
    Abstract: A thin-film transistor array including an insulating substrate, a gate insulating film sandwiched between a first structure and a second structure, the first structure including a gate electrode, a gate wire connected to the gate electrode, a capacitor electrode, and a capacitor wire connected to the capacitor electrode, and the second structure including a source electrode, a source wire connected to the source electrode, a drain electrode, and a pixel electrode connected to the drain electrode, a resistor inserted between parts of the capacitor wire, and a semiconductor layer formed between the source electrode and the drain electrode. The pixel electrode is positioned over the capacitor electrode with the gate insulating film positioned therebetween and has a storage capacitance, and the source electrode and the drain electrode are positioned over the gate electrode with the gate insulating film positioned therebetween.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 25, 2018
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru ISHIZAKI
  • Publication number: 20170221968
    Abstract: A thin-film transistor array includes a substrate and thin-film transistors positioned in matrix on the substrate. The thin-film transistors each include source and drain electrodes formed on a gate insulation layer, and a semiconductor layer formed on the gate insulation layer and positioned between the source and drain electrodes. The semiconductor layer is formed in stripes over the plurality of thin-film transistors such that one of the stripes has a long axis direction coinciding with a channel width direction of one of the thin-film transistors. The semiconductor layer has a cross section in a short axis direction of the stripe such that a thickness of the semiconductor layer gradually decreases outwardly from a center portion of the stripe.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Ryohei MATSUBARA, Mamoru ISHIZAKI, Makoto NISHIZAWA
  • Publication number: 20170169742
    Abstract: A display panel for a shelf board including a display part which displays the information and is to be placed on a front surface of a shelf board, a driving part which drives the display part and is to be placed on an underside of the shelf board along the shelf board, and a wiring part connecting the display part and the driving part. The wiring part extends from an outer periphery of the display part and is bent from a lower edge portion or an upper edge portion of the front surface toward the underside of the shelf board.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 15, 2017
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Mamoru ISHIZAKI, Isao Ebisawa
  • Patent number: 9530809
    Abstract: A layered structure includes a first electrode layer on an insulating substrate, a first insulating film on the first electrode layer, a second electrode layer on the first insulating film, a second insulating film on the second electrode layer, and a third electrode layer on the second insulating film. The first electrode layer, an opening of the first insulating film, the second electrode layer, an opening of the second insulating film, and the third electrode layer have a stack structure that causes the first electrode layer and the second electrode layer to be connected. The third electrode layer relays or reinforces, through the opening of the second insulating film, a connection between the first electrode layer and the second electrode layer formed on the first insulating film.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: December 27, 2016
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Mamoru Ishizaki, Kaoru Hatta
  • Publication number: 20160211280
    Abstract: A thin-film transistor array includes thin-film transistors each including an insulating substrate which is formed with a gate electrode, a gate wiring, a capacitor electrode and a capacitor wiring. A source electrode and a drain electrode having a gap therebetween and including a semiconductor pattern are formed, in a region overlapping with the gate electrode on the substrate via a gate insulator, with the semiconductor pattern being covered with a protective layer. Two such TFTs are independently formed for each pixel. In each pixel, two source electrodes are separately connected to two respective source wirings, and two drain electrodes are connected to an electrode of the pixel via individual drain-connecting electrodes. The array includes source-connecting electrodes each connecting between the source electrodes of the two TFTs formed for each pixel. The same drive waveform is applied to the two source wirings.
    Type: Application
    Filed: December 28, 2015
    Publication date: July 21, 2016
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventor: Mamoru ISHIZAKI