Patents by Inventor Takehiko Kubota
Takehiko Kubota 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).
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Patent number: 9917145Abstract: 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: GrantFiled: May 27, 2016Date of Patent: March 13, 2018Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Publication number: 20170287941Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: ApplicationFiled: June 21, 2017Publication date: October 5, 2017Applicant: SEIKO EPSON CORPORATIONInventors: Takashi TOYA, Takehiko KUBOTA
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Patent number: 9721506Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: GrantFiled: May 2, 2016Date of Patent: August 1, 2017Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Toya, Takehiko Kubota
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Patent number: 9666133Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.Type: GrantFiled: September 4, 2015Date of Patent: May 30, 2017Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Takeshi Nomura, Hitoshi Ota
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Publication number: 20160276423Abstract: 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: ApplicationFiled: May 27, 2016Publication date: September 22, 2016Applicant: SEIKO EPSON CORPORATIONInventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
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Publication number: 20160247448Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: ApplicationFiled: May 2, 2016Publication date: August 25, 2016Applicant: SEIKO EPSON CORPORATIONInventors: Takashi TOYA, Takehiko KUBOTA
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Publication number: 20160194180Abstract: In an elevator control apparatus, a DC-DC converter including a first switching element and a second switching element is configured to generate power for driving an elevator brake by alternately operating each of the first switching element and the second switching element. A first photocoupler and a second photocoupler are configured to independently operate the first switching element and the second switching element, respectively. A first calculation unit and a second calculation unit are configured to independently control power supply voltages of the first photocoupler and the second photocoupler, respectively.Type: ApplicationFiled: September 27, 2013Publication date: July 7, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Takehiko KUBOTA
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Patent number: 9379172Abstract: 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: GrantFiled: November 6, 2014Date of Patent: June 28, 2016Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Patent number: 9361830Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: GrantFiled: April 3, 2015Date of Patent: June 7, 2016Assignee: Seiko Epson CorporationInventors: Takashi Toya, Takehiko Kubota
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Patent number: 9250373Abstract: In an optical system, first green light reflected by a first diffractive optical element propagates in a left direction by repeating total reflection within a first light guide unit, is reflected by a third diffractive optical element, and is guided to a left eye. First red light reflected by a fifth diffractive optical element propagates in a left direction by repeating total reflection within a second light guide unit, is reflected by a seventh diffractive optical element, and is guided to a left eye. First blue light reflected by a ninth diffractive optical element is reflected by an eleventh diffractive optical element, and is guided to a left eye.Type: GrantFiled: August 22, 2012Date of Patent: February 2, 2016Assignee: SEIKO EPSON CORPORATIONInventor: Takehiko Kubota
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Publication number: 20150379933Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.Type: ApplicationFiled: September 4, 2015Publication date: December 31, 2015Applicant: SEIKO EPSON CORPORATIONInventors: Takehiko KUBOTA, Takeshi NOMURA, Hitoshi OTA
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Patent number: 9164601Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.Type: GrantFiled: October 31, 2012Date of Patent: October 20, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Takeshi Nomura, Hitoshi Ota
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Publication number: 20150213760Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: ApplicationFiled: April 3, 2015Publication date: July 30, 2015Inventors: Takashi TOYA, Takehiko KUBOTA
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Patent number: 9070649Abstract: 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: GrantFiled: January 10, 2012Date of Patent: June 30, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Patent number: 9066388Abstract: 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: GrantFiled: June 17, 2014Date of Patent: June 23, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Patent number: 9030390Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.Type: GrantFiled: March 21, 2013Date of Patent: May 12, 2015Assignee: Seiko Epson CorporationInventors: Takashi Toya, Takehiko Kubota
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Publication number: 20150060865Abstract: 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: ApplicationFiled: November 6, 2014Publication date: March 5, 2015Applicant: SEIKO EPSON CORPORATIONInventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
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Patent number: 8937316Abstract: 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: GrantFiled: March 18, 2013Date of Patent: January 20, 2015Assignee: Seiko Epson CorporationInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Patent number: 8895990Abstract: 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: GrantFiled: March 18, 2013Date of Patent: November 25, 2014Assignee: Seiko Epson CorporationInventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
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Publication number: 20140292221Abstract: 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: ApplicationFiled: June 17, 2014Publication date: October 2, 2014Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA