Patents by Inventor Katsuhide Uchino
Katsuhide Uchino 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: 10950168Abstract: Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix and each have an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically.Type: GrantFiled: May 30, 2019Date of Patent: March 16, 2021Assignee: Sony CorporationInventors: Hiroshi Sagawa, Katsuhide Uchino, Tetsuro Yamamoto
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Patent number: 10885837Abstract: 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 drive transistor having source/drain regions, a channel forming region, and a gate electrode, a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and a capacitive unit. In the drive transistor, one of the source/drain regions is connected to the corresponding current supply line, 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 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: April 30, 2018Date of Patent: January 5, 2021Assignee: Sony CorporationInventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
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Patent number: 10872560Abstract: A display device including: a pixel array section; power supply lines; and auxiliary electrodes, wherein each pixel has an auxiliary capacitance, and one of electrodes of the auxiliary capacitance is connected to the source electrode of the drive transistor, and another electrode is connected to the auxiliary electrode for the pixel.Type: GrantFiled: April 19, 2018Date of Patent: December 22, 2020Assignee: Sony CorporationInventors: Yukihito Iida, Tetsuo Minami, Takao Tanikame, Katsuhide Uchino
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Publication number: 20200395562Abstract: Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.Type: ApplicationFiled: August 25, 2020Publication date: December 17, 2020Inventors: Tetsuo MINAMI, Katsuhide UCHINO
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Patent number: 10839747Abstract: A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage-capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage-capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction; and with the control unit, buffer transistors for outputting a pulse signal for sampling to an input video signal to each signal line are arrayed in a column in the longitudinal direction of the laser beam irradiation.Type: GrantFiled: November 24, 2014Date of Patent: November 17, 2020Assignee: Sony CorporationInventors: Junichi Yamashita, Katsuhide Uchino
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Patent number: 10803834Abstract: An EL display panel including: a pixel array section in which EL display elements whose light emission state is controlled by an active matrix driving system are arranged in a form of a matrix; a first writing control line driving section and a second writing control line driving section configured to drive each writing control line from both sides of the pixel array section; and a first power supply line driving section and a second power supply line driving section configured to drive a power supply line disposed along a direction of a horizontal line from both sides of the pixel array section, the first power supply line driving section and the second power supply line driving section being respectively arranged between the first writing control line driving section and the pixel array section and between the second writing control line driving section and the pixel array section.Type: GrantFiled: April 10, 2018Date of Patent: October 13, 2020Assignee: Sony CorporationInventors: Tetsuro Yamamoto, Katsuhide Uchino, Masakazu Kato
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Patent number: 10796637Abstract: A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction or horizontal direction; and wherein with the control unit, the size of the buffer transistor is equal to or greater than the pixel pitch in the scanning direction of the laser beam.Type: GrantFiled: October 19, 2018Date of Patent: October 6, 2020Assignee: Sony CorporationInventors: Junichi Yamashita, Katsuhide Uchino
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Patent number: 10784453Abstract: Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.Type: GrantFiled: November 18, 2019Date of Patent: September 22, 2020Assignee: JOLED Inc.Inventors: Tetsuo Minami, Katsuhide Uchino
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Patent number: 10707291Abstract: The present invention relates to an image display device and a method for repairing a short circuit failure. The present invention is applicable to, for example, an active matrix type image display device using an organic EL device, and a short circuit location between wiring patterns is able to be repaired. In a scanning line WSL or a signal line DTL, a bypass wiring pattern BP for bypassing a region where the signal line DTL and the scanning line WSL intersect with each other is provided. By using the bypass wiring pattern BP, a short circuit location between wiring patterns is repaired.Type: GrantFiled: March 25, 2019Date of Patent: July 7, 2020Assignee: Sony CorporationInventors: Yukihito Iida, Takayuki Taneda, Katsuhide Uchino
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Patent number: 10672850Abstract: A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity.Type: GrantFiled: October 25, 2018Date of Patent: June 2, 2020Assignee: Sony CorporationInventors: Takayuki Taneda, Tetsuro Yamamoto, Katsuhide Uchino
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Publication number: 20200168151Abstract: A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning.Type: ApplicationFiled: January 28, 2020Publication date: May 28, 2020Inventors: Junichi Yamashita, Takao Tanikame, Katsuhide Uchino
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Patent number: 10657880Abstract: Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix and each have an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically.Type: GrantFiled: March 7, 2016Date of Patent: May 19, 2020Assignee: Sony CorporationInventors: Hiroshi Sagawa, Katsuhide Uchino, Tetsuro Yamamoto
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Publication number: 20200091447Abstract: Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.Type: ApplicationFiled: November 18, 2019Publication date: March 19, 2020Inventors: Tetsuo Minami, Katsuhide Uchino
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Patent number: 10586492Abstract: A pixel circuit includes a switching transistor whose conduction is controlled by a drive signal supplied to the control terminal, a drive wiring adapted to propagate the drive signal, and a data wiring adapted to propagate a data signal. A multi-layered wiring structure is used so that a second wiring layer is formed on a layer different from that on which a first wiring layer is formed.Type: GrantFiled: April 6, 2018Date of Patent: March 10, 2020Assignee: Sony CorporationInventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
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Patent number: 10573233Abstract: A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning.Type: GrantFiled: December 15, 2017Date of Patent: February 25, 2020Assignee: Sony CorporationInventors: Junichi Yamashita, Takao Tanikame, Katsuhide Uchino
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Publication number: 20200051505Abstract: A display device according to the present disclosure includes: a pixel array unit (30) in which pixel circuits (20A) are disposed in a matrix form, the pixel circuits each including a light emission unit (21), a write transistor (23) that writes a signal voltage (Vsig) of a video signal, a retention capacitor (24) that retains the signal voltage (Vsig) written by the write transistor (23), a drive transistor (22) that drives the light emission unit (21) on the basis of the signal voltage (Vsig) retained by the retention capacitor (24), and an auxiliary capacitor (25) of which one terminal is connected to a source node of the drive transistor (22); and a control unit (90) that provides a potential change to a source electrode of the drive transistor (22) by coupling through the auxiliary capacitor (25) to set an operation point of the drive transistor (22) as a cut-off region after the threshold value correction process.Type: ApplicationFiled: October 17, 2019Publication date: February 13, 2020Inventors: Naobumi Toyomura, Katsuhide Uchino, Yuki Seo
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Publication number: 20200051502Abstract: A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.Type: ApplicationFiled: October 16, 2019Publication date: February 13, 2020Applicant: Sony CorporationInventors: Katsuhide UCHINO, Junichi YAMASHITA, Tetsuro YAMAMOTO
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Patent number: 10559636Abstract: The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element.Type: GrantFiled: October 17, 2018Date of Patent: February 11, 2020Assignee: Sony CorporationInventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
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Patent number: 10529280Abstract: Any one of a write scanning line, a power source supply line, and a video signal line is structured as a subsidiary wiring disposed in the same layer as that having a lower electrode disposed therein. The subsidiary wiring is used in the power source supply line through which a power source drive pulse to be pulse-driven is transmitted, or other wirings (such as the write scanning line and the video signal line).Type: GrantFiled: June 18, 2019Date of Patent: January 7, 2020Assignee: Sony CorporationInventors: Junichi Yamashita, Katsuhide Uchino
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Patent number: RE47916Abstract: A display apparatus includes a pixel unit in which pixels are arranged in a matrix pattern; and a driving circuit for driving the pixel unit. Each of the pixels includes a signal level holding capacitor; a first transistor that is turned on/off in response to a writing signal and via which one end of the signal level holding capacitor is connected to a signal line; a second transistor having one end of the signal level holding capacitor connected to a gate thereof and the other end of the signal level holding capacitor connected to a source thereof; a current-driven self-light-emitting element whose cathode is held at a cathode potential and whose anode is connected to the source of the second transistor; a third transistor that is turned on/off in response to a driving pulse signal; and a fourth transistor that is turned on/off in response to a control signal.Type: GrantFiled: December 23, 2016Date of Patent: March 24, 2020Assignee: Sony CorporationInventors: Katsuhide Uchino, Tetsuro Yamamoto, Junichi Yamashita