Patents by Inventor Ryoichi Nozawa

Ryoichi Nozawa 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: 8937316
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: January 20, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Publication number: 20150001558
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 1, 2015
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
  • Publication number: 20140368106
    Abstract: A light-emitting device is equipped with a first light-emitting element and a second light-emitting element that are formed above a base, and a sealing layer that coats the first light-emitting element and the second light-emitting element. At least one of an interval between the first light-emitting element and the second light-emitting element, a pitch between the first light-emitting element and the second light-emitting element, or a width of the light-emitting elements is less than or equal to a film thickness of the sealing layer.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 18, 2014
    Inventor: Ryoichi NOZAWA
  • Publication number: 20140361273
    Abstract: There is provided an organic EL apparatus as an electro-optic apparatus including: a substrate; a light-emitting element that is provided at a first area of the substrate; a guard line that is provided to surround the first area; and a sealing film or a sealing structure that covers the first area and reaches the guard line.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 11, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Ryoichi NOZAWA
  • Publication number: 20140361316
    Abstract: An electro-optical apparatus includes a first pixel and a second pixel. The first pixel and the second pixel include a reflective layer, an insulating layer, a functional layer, and an opposing electrode. The insulating layer includes a first insulating layer, a second insulating layer having a first opening, and a third insulating layer having a second opening. A first pixel electrode is provided on the first insulating layer in the first opening. A second pixel electrode is provided on the second insulating layer.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 11, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Takeshi KOSHIHARA, Hisakatsu SATO
  • Patent number: 8895990
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8876274
    Abstract: A pattern forming method includes: performing a first droplet ejection step by ejecting droplets containing 0.1%-2% polysiloxane by mass onto a substrate; performing a first layer forming step by solidifying the droplets ejected onto the substrate so that a first layer is formed; performing a second droplet ejection step by ejecting more droplets over the first layer; and performing a second layer forming step by solidifying the droplets ejected onto the first layer so that a second layer is formed.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 4, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yuya Haneda, Ryoichi Nozawa
  • Publication number: 20140292221
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor.
    Type: Application
    Filed: June 17, 2014
    Publication date: October 2, 2014
    Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
  • Patent number: 8814311
    Abstract: A inkjet printer includes an ejection head, a curing-light-emitting part, a head retaining part, a relative scanning part, a drive output detecting part, and a curing-light-emission-control part. The ejection head ejects a photocuring liquid onto a printing medium retained by a medium retaining part. The curing-light-emitting part emits curing light onto the printing medium. The head retaining part retains the ejection head and the curing light emitting part. The relative scanning part performs relative movement of the head retaining part and the medium retaining part. The drive output detecting part detects an output of a drive source of the relative scanning part. The curing-light-emission-control part controls the curing-light-emitting part based on a detection result from the drive output detecting part.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: August 26, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hiroaki Akiyama, Ryoichi Nozawa
  • Publication number: 20140217432
    Abstract: There is provided a light emitting device including: a semiconductor substrate; a plurality of pixel circuits that is disposed in a display region of the semiconductor substrate; a first wiring that is formed of a conductive material so as to be supplied with a predetermined electric potential; and a plurality of first contact portions that is formed of a conductive material so as to connect the semiconductor substrate and the first wiring. The plurality of first contact portions and the first wiring are provided in the display region.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 7, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi OTA, Ryoichi NOZAWA, Takeshi NOMURA
  • Patent number: 8785948
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: July 22, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8772789
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an electrical continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line including a first portion extending in a first direction and a second portion extending in a second direction that crosses the first direction. The connecting portion being positioned in an area between the first and second power supply lines in plan view.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 8, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8704234
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: April 22, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8698714
    Abstract: To reduce the time for writing a voltage onto a gate of a driving transistor. In an initialization period, a node B is fixed to an initial voltage VINI, transistors are turned on, and a current flows into an OLED element, such that a voltage according to the current is held at the node A. Thereafter, the transistors are sequentially turned off, such that a threshold voltage of a driving transistor is held at the node A. In a writing period, a transistor is turned on and a data signal X-j is supplied, such that a voltage of the node B varies by the amount according to the current flowing into the OLED element. The voltage of the node A varies from the threshold voltage by the amount which is obtained by dividing the voltage variation by a capacitance ratio. In a light-emitting period, the transistor is turned on, such that a current according to the voltage of the node A flows into the OLED element.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Tokuro Ozawa, Toshiyuki Kasai, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8692259
    Abstract: A light-emitting device includes a power feeding line to which a predetermined voltage is supplied; a light-emitting element formed of a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode; and a driving transistor that controls the amount of current supplied to the light-emitting element from the power feeding line. The power feeding line includes a portion interposed between the first electrode and the driving transistor.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: April 8, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Publication number: 20120286659
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor.
    Type: Application
    Filed: July 24, 2012
    Publication date: November 15, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Publication number: 20120249651
    Abstract: A inkjet printer includes an ejection head, a curing-light-emitting part, a head retaining part, a relative scanning part, a drive output detecting part, and a curing-light-emission-control part. The ejection head ejects a photocuring liquid onto a printing medium retained by a medium retaining part. The curing-light-emitting part emits curing light onto the printing medium. The head retaining part retains the ejection head and the curing light emitting part. The relative scanning part performs relative movement of the head retaining part and the medium retaining part. The drive output detecting part detects an output of a drive source of the relative scanning part. The curing-light-emission-control part controls the curing-light-emitting part based on a detection result from the drive output detecting point.
    Type: Application
    Filed: March 21, 2012
    Publication date: October 4, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroaki AKIYAMA, Ryoichi NOZAWA
  • Publication number: 20120249664
    Abstract: A pattern forming method includes: performing a first droplet ejection step by ejecting droplets containing 0.1%-2% polysiloxane by mass onto a substrate; performing a first layer forming step by solidifying the droplets ejected onto the substrate so that a first layer is formed; performing a second droplet ejection step by ejecting more droplets over the first layer; and performing a second layer forming step by solidifying the droplets ejected onto the first layer so that a second layer is formed.
    Type: Application
    Filed: March 26, 2012
    Publication date: October 4, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yuya HANEDA, Ryoichi NOZAWA
  • Publication number: 20120199871
    Abstract: A light-emitting device includes a power feeding line to which a predetermined voltage is supplied; a light-emitting element formed of a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode; and a driving transistor that controls the amount of current supplied to the light-emitting element from the power feeding line. The power feeding line includes a portion interposed between the first electrode and the driving transistor.
    Type: Application
    Filed: April 11, 2012
    Publication date: August 9, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
  • Patent number: 8232936
    Abstract: To reduce time for writing a target voltage in the gate of a driving transistor. In a first period, a transistor 211 is switched on to allow a driving transistor 210 to function as a diode and transistors 212 and 213 are switched on to electrically connect the drain of the driving transistor 210 to a data line 112, to which an initial voltage is applied, such that the initial voltage is applied to the gate of the driving transistor 210. In a second period, a transistor 212 is switched off such that the gate of the driving transistor 210 is maintained to have an off voltage corresponding to the power source. In a third period, the transistor 211 is switched off such that the voltage of the data line 112 is converted into a grayscale voltage to maintain the gate of the driving transistor at the target voltage. In a fourth period, the driving transistor 210 flows the current corresponding to the maintained gate voltage to an OLED element 230.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: July 31, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tokuro Ozawa, Ryoichi Nozawa