Patents by Inventor Yusuke Onoyama
Yusuke Onoyama 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: 9792860Abstract: A light-emitting element includes a light-emitting section and a driving circuit that drives the light-emitting section. The driving circuit includes at least (A) a drive transistor that is a p-channel field effect transistor, (B) an image-signal writing transistor that is a p-channel field effect transistor, (C) a light-emission control transistor that is a p-channel field effect transistor, and (D) a capacitor. Each of the drive transistor, image-signal writing transistor, and light-emission control transistor is provided in an n-type well formed in a p-type silicon semiconductor substrate. A first source/drain region of the drive transistor is electrically connected to the n-type well in which the drive transistor is formed.Type: GrantFiled: November 7, 2013Date of Patent: October 17, 2017Assignee: Sony CorporationInventors: Nobuaki Hokazono, Junichi Yamashita, Yusuke Onoyama
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Publication number: 20170243544Abstract: Provided is a display device including a driving transistor, a switching unit, and a control unit. The driving transistor includes a control terminal, a first terminal, and a second terminal, and controls supply of current to a light emitting element, which is connected to the first terminal and emits light in accordance with the current amount, in accordance with a signal voltage applied to the control terminal. The switching unit can switch a conduction and non-conduction state, and, by being brought in the conduction state, forms a path that bypasses the light emitting element so that the current is not supplied to the light emitting element. The control unit performs control so that the switching unit is brought in the non-conduction state after the signal voltage is written into the control terminal, and controls a potential of the control terminal in synchronization with the control of the switching unit.Type: ApplicationFiled: March 13, 2017Publication date: August 24, 2017Inventors: Kei Kimura, Yusuke Onoyama
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Publication number: 20170148386Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: ApplicationFiled: February 8, 2017Publication date: May 25, 2017Inventors: Junichi YAMASHITA, Yusuke ONOYAMA, Tetsuo MINAMI, Naobumi TOYOMURA, Tetsuro YAMAMOTO, Katsuhide UCHINO
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Patent number: 9646532Abstract: A display device includes a pixel array unit that is formed by disposing pixel circuits that include a P-channel type drive transistor that drives a light-emitting unit, a sampling transistor that applies a signal voltage, a light emission control transistor that controls light emission and non-light emission of the light-emitting unit, a storage capacitor that is connected between a gate electrode and a source electrode of the drive transistor and an auxiliary capacitor, a first end of which is connected to the source electrode of the drive transistor, and a drive unit that, during threshold correction, applies a standard voltage that is used in threshold correction to the gate electrode of the drive transistor in a state in which the source electrode of the drive transistor has been set to a floating state, and subsequently applies a pulse signal to a second end of the auxiliary capacitor.Type: GrantFiled: May 28, 2014Date of Patent: May 9, 2017Assignee: Sony CorporationInventors: Yusuke Onoyama, Junichi Yamashita
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Patent number: 9640111Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: GrantFiled: May 5, 2015Date of Patent: May 2, 2017Assignee: SONY CORPORATIONInventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
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Patent number: 9633604Abstract: Provided is a display device including a pixel array unit that is made by arranging a drive transistor to drive a light emitting unit, a sampling transistor to sample a signal voltage, and a pixel circuit having a storage capacitor to store the signal voltage which is written by sampling with the sampling transistor, and a drive unit that makes a gate node and a source node of the drive transistor be in a floating state up to performing writing of the signal voltage with the sampling transistor, after writing an initialization voltage in the gate node when the source node of the drive transistor is in a non-floating state.Type: GrantFiled: November 14, 2016Date of Patent: April 25, 2017Assignee: Sony CorporationInventors: Kei Kimura, Yusuke Onoyama, Naobumi Toyomura, Junichi Yamashita
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Patent number: 9626904Abstract: Provided is a display device including a driving transistor, a switching unit, and a control unit. The driving transistor includes a control terminal, a first terminal, and a second terminal, and controls supply of current to a light emitting element, which is connected to the first terminal and emits light in accordance with the current amount, in accordance with a signal voltage applied to the control terminal. The switching unit can switch a conduction and non-conduction state, and, by being brought in the conduction state, forms a path that bypasses the light emitting element so that the current is not supplied to the light emitting element. The control unit performs control so that the switching unit is brought in the non-conduction state after the signal voltage is written into the control terminal, and controls a potential of the control terminal in synchronization with the control of the switching unit.Type: GrantFiled: October 7, 2014Date of Patent: April 18, 2017Assignee: Sony CorporationInventors: Kei Kimura, Yusuke Onoyama
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Patent number: 9601055Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: GrantFiled: May 5, 2015Date of Patent: March 21, 2017Assignee: SONY CORPORATIONInventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
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Publication number: 20170061887Abstract: Provided is a display device including a pixel array unit that is made by arranging a drive transistor to drive a light emitting unit, a sampling transistor to sample a signal voltage, and a pixel circuit having a storage capacitor to store the signal voltage which is written by sampling with the sampling transistor, and a drive unit that makes a gate node and a source node of the drive transistor be in a floating state up to performing writing of the signal voltage with the sampling transistor, after writing an initialization voltage in the gate node when the source node of the drive transistor is in a non-floating state.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Inventors: Kei Kimura, Yusuke Onoyama, Naobumi Toyomura, Junichi Yamashita
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Patent number: 9524673Abstract: Provided is a display device including a pixel array unit that is made by arranging a drive transistor to drive a light emitting unit, a sampling transistor to sample a signal voltage, and a pixel circuit having a storage capacitor to store the signal voltage which is written by sampling with the sampling transistor, and a drive unit that makes a gate node and a source node of the drive transistor be in a floating state up to performing writing of the signal voltage with the sampling transistor, after writing an initialization voltage in the gate node when the source node of the drive transistor is in a non-floating state.Type: GrantFiled: July 9, 2014Date of Patent: December 20, 2016Assignee: Sony CorporationInventors: Kei Kimura, Yusuke Onoyama, Naobumi Toyomura, Junichi Yamashita
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Publication number: 20150279266Abstract: Provided is a display device including: a pixel array unit in which pixels including a light-emitting unit are arranged in a matrix shape; two drive units which are disposed on the same substrate as the pixel array unit with the pixel array unit interposed therebetween, which have output stages in a number that is half of the number of pixel rows of the pixel array unit, and in which the output stages are in charge of driving of pixels on an odd row side and on an even row side; and a control unit which performs control of driving the pixels on the odd row side by using the output stages of one drive unit between the two drive units, of driving the pixels on the even row side by using the output stages of the other drive unit, and of inverting the driving for each field.Type: ApplicationFiled: March 13, 2015Publication date: October 1, 2015Inventors: Yusuke Onoyama, Kei Kimura
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Publication number: 20150235592Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: ApplicationFiled: May 5, 2015Publication date: August 20, 2015Inventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
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Patent number: 9041628Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: GrantFiled: August 17, 2012Date of Patent: May 26, 2015Assignee: Sony CorporationInventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
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Publication number: 20150138253Abstract: Provided is a display device including a driving transistor, a switching unit, and a control unit. The driving transistor includes a control terminal, a first terminal, and a second terminal, and controls supply of current to a light emitting element, which is connected to the first terminal and emits light in accordance with the current amount, in accordance with a signal voltage applied to the control terminal The switching unit can switch a conduction and non-conduction state, and, by being brought in the conduction state, forms a path that bypasses the light emitting element so that the current is not supplied to the light emitting element. The control unit performs control so that the switching unit is brought in the non-conduction state after the signal voltage is written into the control terminal, and controls a potential of the control terminal in synchronization with the control of the switching unit.Type: ApplicationFiled: October 7, 2014Publication date: May 21, 2015Applicant: SONY CORPORATIONInventors: Kei Kimura, Yusuke Onoyama
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Publication number: 20150042635Abstract: Provided is a display device including a pixel array unit that is made by arranging a drive transistor to drive a light emitting unit, a sampling transistor to sample a signal voltage, and a pixel circuit having a storage capacitor to store the signal voltage which is written by sampling with the sampling transistor, and a drive unit that makes a gate node and a source node of the drive transistor be in a floating state up to performing writing of the signal voltage with the sampling transistor, after writing an initialization voltage in the gate node when the source node of the drive transistor is in a non-floating state.Type: ApplicationFiled: July 9, 2014Publication date: February 12, 2015Inventors: Kei Kimura, Yusuke Onoyama, Naobumi Toyomura, Junichi Yamashita
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Publication number: 20150009201Abstract: A display device includes a pixel array unit formed by disposing pixel circuits having a P-channel type drive transistor that drives a light-emitting unit, a sampling transistor that applies a signal voltage, a light emission control transistor that controls emission/non-emission of the light-emitting unit, a storage capacitor that is connected between a gate electrode and a source electrode of the drive transistor and an auxiliary capacitor that is connected to the source electrode, and a drive unit that, during threshold correction, respectively applies a first voltage and a second voltage to the source electrode of the drive transistor and the gate electrode thereof, the difference between the first voltage and the second voltage being less than a threshold voltage of the drive transistor, and subsequently performs driving that applies a standard voltage used in threshold correction to the gate electrode when the source electrode is in a floating state.Type: ApplicationFiled: May 28, 2014Publication date: January 8, 2015Applicant: SONY CORPORATIONInventors: Yusuke Onoyama, Junichi Yamashita, Naobumi Toyomura
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Publication number: 20150009243Abstract: A display device includes a pixel array unit that is formed by disposing pixel circuits that include a P-channel type drive transistor that drives a light-emitting unit, a sampling transistor that applies a signal voltage, a light emission control transistor that controls light emission and non-light emission of the light-emitting unit, a storage capacitor that is connected between a gate electrode and a source electrode of the drive transistor and an auxiliary capacitor, a first end of which is connected to the source electrode of the drive transistor, and a drive unit that, during threshold correction, applies a standard voltage that is used in threshold correction to the gate electrode of the drive transistor in a state in which the source electrode of the drive transistor has been set to a floating state, and subsequently applies a pulse signal to a second end of the auxiliary capacitor.Type: ApplicationFiled: May 28, 2014Publication date: January 8, 2015Applicant: Sony CorporationInventors: Yusuke Onoyama, Junichi Yamashita
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Publication number: 20140285406Abstract: A gray-scale voltage generating circuit includes: a ladder resistor circuit including a plurality of resistors connected in series to one another, and configured to output a plurality of gray-scale voltages with different voltage values from ends of the respective resistors; and a constant current source configured to be connected in series to the ladder resistor circuit, in which the constant current source includes a current source transistor configured to be connected in series to the ladder resistor circuit, and a voltage setting section configured to select one voltage from the plurality of voltages and set the selected voltage as a voltage determining a current that is to flow through the current source transistor.Type: ApplicationFiled: February 26, 2014Publication date: September 25, 2014Applicant: SONY CORPORATIONInventors: Kei Kimura, Yusuke Onoyama, Junichi Yamashita
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Publication number: 20140132175Abstract: A light-emitting element includes a light-emitting section and a driving circuit that drives the light-emitting section. The driving circuit includes at least (A) a drive transistor that is a p-channel field effect transistor, (B) an image-signal writing transistor that is a p-channel field effect transistor, (C) a light-emission control transistor that is a p-channel field effect transistor, and (D) a capacitor. Each of the drive transistor, image-signal writing transistor, and light-emission control transistor is provided in an n-type well formed in a p-type silicon semiconductor substrate. A first source/drain region of the drive transistor is electrically connected to the n-type well in which the drive transistor is formed.Type: ApplicationFiled: November 7, 2013Publication date: May 15, 2014Applicant: Sony CorporationInventors: Nobuaki Hokazono, Junichi Yamashita, Yusuke Onoyama
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Publication number: 20130050067Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.Type: ApplicationFiled: August 17, 2012Publication date: February 28, 2013Applicant: Sony CorporationInventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino