Patents by Inventor Takuma Fujii
Takuma Fujii 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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Publication number: 20240029652Abstract: Provided is a pixel circuit capable of preventing slight light emission of an organic EL element due to leakage current from a driving transistor. Provided is a pixel circuit including: a light-emitting element that emits light at luminance corresponding to an amount of current; a first capacitance, which is a metal insulator metal (MIM) capacitance; and a second capacitance, which is a metal insulator semiconductor (MIS) capacitance disposed in parallel to the light-emitting element.Type: ApplicationFiled: June 15, 2023Publication date: January 25, 2024Inventors: Takayuki Sakaguchi, Takuma Fujii
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Publication number: 20230410753Abstract: [Object] It is possible to further improve reliability. [Solution] There is provided a display device including: a pixel unit which is configured with a plurality of pixel circuits arranged in a matrix, each of the pixel circuits including a light emitting element and a driving circuit for driving the light emitting element; scanning lines which are interconnections connected to the respective pixel circuits and are provided to extend in a first direction and correspond to respective rows of a plurality of the pixel circuits; and signal lines which are interconnections connected to the respective pixel circuits and are provided to extend in a second direction orthogonal to the first direction and correspond to respective columns of a plurality of the pixel circuits. One of the scanning lines and the signal lines, provided for the one pixel circuit, which is larger in number is positioned in a lower-level interconnection layer.Type: ApplicationFiled: May 24, 2023Publication date: December 21, 2023Inventors: Takuma Fujii, Naobumi Toyomura
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Patent number: 11802518Abstract: An engine system is provided, which includes a vehicle-mounted engine having an injector, a spark plug, an intake valve operating mechanism, and an exhaust valve operating mechanism, an accelerator opening sensor, and a controller. The engine is configured to execute flame propagation combustion and compressed self-ignition combustion. The controller performs a combustion control so that a target torque set based on an accelerator opening is realized in a specific cycle in the future from a present time by a given delay time. The controller sets beforehand the combustion mode based on a target load, estimates an in-cylinder property when the intake valve is closed in the present cycle, sets a target in-cylinder property so that the set combustion mode is realized in the specific cycle, and sets a target operating amount of each of the intake and exhaust valve operating mechanisms based on the set target in-cylinder property.Type: GrantFiled: September 13, 2022Date of Patent: October 31, 2023Assignee: Mazda Motor CorporationInventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Publication number: 20230317016Abstract: A display device of the present disclosure includes: a pixel array unit in which pixels respectively including light emitting units are arranged; a writing scanning unit that writes a video signal while scanning each the pixels of the pixel array unit in units of pixel rows; and a light emission driving unit that divides a display screen into a plurality of units in a scanning direction in units of the pixel rows, and performs light emission driving for each of the divided units.Type: ApplicationFiled: August 19, 2021Publication date: October 5, 2023Inventor: Takuma Fujii
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Patent number: 11721281Abstract: Provided is a pixel circuit capable of preventing slight light emission of an organic EL element due to leakage current from a driving transistor. Provided is a pixel circuit including: a light-emitting element that emits light at luminance corresponding to an amount of current; a first capacitance, which is a metal insulator metal (MIM) capacitance; and a second capacitance, which is a metal insulator semiconductor (MIS) capacitance disposed in parallel to the light-emitting element.Type: GrantFiled: November 14, 2018Date of Patent: August 8, 2023Assignee: Sony Semiconductor Solutions CorporationInventors: Takayuki Sakaguchi, Takuma Fujii
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Patent number: 11705072Abstract: [Object] It is possible to further improve reliability. [Solution] There is provided a display device including: a pixel unit which is configured with a plurality of pixel circuits arranged in a matrix, each of the pixel circuits including a light emitting element and a driving circuit for driving the light emitting element; scanning lines which are interconnections connected to the respective pixel circuits and are provided to extend in a first direction and correspond to respective rows of a plurality of the pixel circuits; and signal lines which are interconnections connected to the respective pixel circuits and are provided to extend in a second direction orthogonal to the first direction and correspond to respective columns of a plurality of the pixel circuits. One of the scanning lines and the signal lines, provided for the one pixel circuit, which is larger in number is positioned in a lower-level interconnection layer.Type: GrantFiled: July 22, 2022Date of Patent: July 18, 2023Assignee: Sony Semiconductor Solutions CorporationInventors: Takuma Fujii, Naobumi Toyomura
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Publication number: 20230180542Abstract: Provided is a display device including: a pixel unit in which a plurality of pixel circuits (PIX_A, PIX_B, PIX_C) each of which includes a light emitting element and a driving circuit configured to drive the light emitting element are arranged in a matrix form. In a diffusion layer in which transistors included in the driving circuits of the pixel circuits (PIX_A, PIX_B, PIX_C) are formed, an electricity supply region (223) that is an active area for supplying an electric potential to a well is provided between mutually adjacent ones of the pixel circuits (PIX_A, PIX_B, PIX_C).Type: ApplicationFiled: October 17, 2022Publication date: June 8, 2023Inventors: Naobumi Toyomura, Takuma Fujii
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Patent number: 11653519Abstract: A display device includes: an organic EL layer formed over a circuit section formed over a substrate, an insulating layer interposed between the circuit section and the organic EL layer; a cathode electrode formed over the organic EL layer in common for all pixels; and a contact electrode that is provided at an outer peripheral portion of an effective pixel region and that electrically connects the cathode electrode and the circuit section. In the display device, the cathode electrode is electrically connected to the contact electrode, on an inner side as compared to an end surface of a film formation area of the organic EL layer.Type: GrantFiled: August 11, 2021Date of Patent: May 16, 2023Assignee: Sony Semiconductor Solutions CorporationInventor: Takuma Fujii
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Patent number: 11639699Abstract: An engine system is provided, which includes a vehicle-mounted engine having an injector, a spark plug, and a property adjusting device, an accelerator opening sensor, and a controller. The controller performs a combustion control for controlling the injector, the spark plug, and the property adjusting device so that a target torque set based on a present accelerator opening detected by the accelerator opening sensor is outputted in a specific cycle in the future from a present time by a given delay time. In the combustion control, the controller sets a target load of the engine in the specific cycle based on the present accelerator opening, and sets a combustion transition from the present cycle to the specific cycle by selecting beforehand combustion from the present cycle to the specific cycle, from flame propagation combustion and compressed self-ignition combustion, based on the set target load.Type: GrantFiled: September 12, 2022Date of Patent: May 2, 2023Assignee: Mazda Motor CorporationInventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Patent number: 11635040Abstract: A method of controlling an engine is provided, which includes setting, by a controller, a target torque of the engine in a specific cycle in the future by a given delay time from the present time based on a present accelerator opening. The method includes selecting beforehand, by the controller, combustion in the specific cycle according to the target torque, from flame propagation combustion and compressed self-ignition combustion. The method includes outputting, by the controller, a control signal to a property adjusting device before the specific cycle so that a property inside the cylinder in the specific cycle becomes a property corresponding to the selected combustion. The method includes estimating, by the controller, the property at a timing when an intake valve is closed in the specific cycle. The method includes outputting, by the controller, a control signal corresponding to the estimated property to a spark plug or an injector.Type: GrantFiled: September 12, 2022Date of Patent: April 25, 2023Assignee: Mazda Motor CorporationInventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Publication number: 20230108724Abstract: A method of controlling an engine is provided, which includes setting, by a controller, a target torque of the engine in a specific cycle in the future by a given delay time from the present time based on a present accelerator opening. The method includes selecting beforehand, by the controller, combustion in the specific cycle according to the target torque, from flame propagation combustion and compressed self-ignition combustion. The method includes outputting, by the controller, a control signal to a property adjusting device before the specific cycle so that a property inside the cylinder in the specific cycle becomes a property corresponding to the selected combustion. The method includes estimating, by the controller, the property at a timing when an intake valve is closed in the specific cycle. The method includes outputting, by the controller, a control signal corresponding to the estimated property to a spark plug or an injector.Type: ApplicationFiled: September 12, 2022Publication date: April 6, 2023Inventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Publication number: 20230105260Abstract: An engine system is provided, which includes a vehicle-mounted engine having an injector, a spark plug, and a property adjusting device, an accelerator opening sensor, and a controller. The controller performs a combustion control for controlling the injector, the spark plug, and the property adjusting device so that a target torque set based on a present accelerator opening detected by the accelerator opening sensor is outputted in a specific cycle in the future from a present time by a given delay time. In the combustion control, the controller sets a target load of the engine in the specific cycle based on the present accelerator opening, and sets a combustion transition from the present cycle to the specific cycle by selecting beforehand combustion from the present cycle to the specific cycle, from flame propagation combustion and compressed self-ignition combustion, based on the set target load.Type: ApplicationFiled: September 12, 2022Publication date: April 6, 2023Inventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Publication number: 20230103525Abstract: An engine system is provided, which includes a vehicle-mounted engine having an injector, a spark plug, an intake valve operating mechanism, and an exhaust valve operating mechanism, an accelerator opening sensor, and a controller. The controller sets beforehand a combustion mode so that a target torque set based on an accelerator opening is realized in a specific cycle in the future from a present time by a given delay time, sets an in-cylinder property when an intake valve is closed in the specific cycle so that the set combustion mode is realized in the specific cycle, estimates the actual in-cylinder property when the intake valve is closed in the specific cycle, when the delay time passes and the cycle becomes the specific cycle, and adjusts an operating amount of at least one of the injector and the spark plug, when the estimated in-cylinder property deviates from the target in-cylinder property.Type: ApplicationFiled: September 14, 2022Publication date: April 6, 2023Inventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Publication number: 20230107773Abstract: An engine system is provided, which includes a vehicle-mounted engine having an injector, a spark plug, an intake valve operating mechanism, and an exhaust valve operating mechanism, an accelerator opening sensor, and a controller. The engine is configured to execute flame propagation combustion and compressed self-ignition combustion. The controller performs a combustion control so that a target torque set based on an accelerator opening is realized in a specific cycle in the future from a present time by a given delay time. The controller sets beforehand the combustion mode based on a target load, estimates an in-cylinder property when the intake valve is closed in the present cycle, sets a target in-cylinder property so that the set combustion mode is realized in the specific cycle, and sets a target operating amount of each of the intake and exhaust valve operating mechanisms based on the set target in-cylinder property.Type: ApplicationFiled: September 13, 2022Publication date: April 6, 2023Inventors: Takuma Fujii, Takayuki Hikita, Saori Mizuno, Mitsuhiro Muto
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Patent number: 11591983Abstract: An engine system is provided, including a controller which controls devices of an engine at a given engine speed so that, when a demanded engine load is a first load, a mass ratio (G/F) of intake air inside a cylinder (containing fresh air and burnt gas) to fuel is a first G/F and mixture gas inside the cylinder combusts by flame-propagation, when the demanded load is a second load (<the first load), the G/F is a second G/F (>the first G/F) and an injection center-of-gravity is at a timing such that the entire mixture gas combusts by CI combustion, and when the demanded load is between the first and second loads, the G/F is at a third G/F (between the first and second G/Fs) and the injection center-of-gravity is at a later timing such that at least part of the mixture gas combusts by the CI combustion.Type: GrantFiled: October 27, 2021Date of Patent: February 28, 2023Assignee: Mazda Motor CorporationInventors: Takashi Kaminaga, Tatsuya Fujikawa, Masahisa Yamakawa, Naoya Ito, Ryohei Matsuo, Yuta Sasaki, Junki Hori, Mitsuhiro Muto, Takuma Fujii
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Patent number: 11563070Abstract: Provided is a display device including: a pixel unit in which a plurality of pixel circuits (PIX_A, PIX_B, PIX_C) each of which includes a light emitting element and a driving circuit configured to drive the light emitting element are arranged in a matrix form. In a diffusion layer in which transistors included in the driving circuits of the pixel circuits (PIX_A, PIX_B, PIX_C) are formed, an electricity supply region (223) that is an active area for supplying an electric potential to a well is provided between mutually adjacent ones of the pixel circuits (PIX_A, PIX_B, PIX_C).Type: GrantFiled: April 20, 2021Date of Patent: January 24, 2023Assignee: Sony Semiconductor Solutions CorporationInventors: Naobumi Toyomura, Takuma Fujii
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Publication number: 20230017349Abstract: [Object] It is possible to further improve reliability. [Solution] There is provided a display device including: a pixel unit which is configured with a plurality of pixel circuits arranged in a matrix, each of the pixel circuits including a light emitting element and a driving circuit for driving the light emitting element; scanning lines which are interconnections connected to the respective pixel circuits and are provided to extend in a first direction and correspond to respective rows of a plurality of the pixel circuits; and signal lines which are interconnections connected to the respective pixel circuits and are provided to extend in a second direction orthogonal to the first direction and correspond to respective columns of a plurality of the pixel circuits. One of the scanning lines and the signal lines, provided for the one pixel circuit, which is larger in number is positioned in a lower-level interconnection layer.Type: ApplicationFiled: July 22, 2022Publication date: January 19, 2023Inventors: Takuma Fujii, Naobumi Toyomura
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Patent number: 11542886Abstract: An engine system is provided, including a controller which estimates an intake-valve-closing temperature inside a cylinder. When an engine operates at a given speed and a demanded engine load is a first load or a second load (>the first load), the controller controls so that a mixture gas inside the cylinder combusts by compression ignition, and controls so that, at the first load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a first temperature, and at least part of the mixture gas combusts by flame propagation when the intake-valve-closing temperature is below the first temperature, whereas at the second load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a second temperature (<the first temperature), and at least part of the mixture gas combusts by flame propagation when the intake-valve-closing temperature is below the second temperature.Type: GrantFiled: October 29, 2021Date of Patent: January 3, 2023Assignee: Mazda Motor CorporationInventors: Takashi Kaminaga, Tatsuya Fujikawa, Masahisa Yamakawa, Naoya Ito, Ryohei Matsuo, Yuta Sasaki, Junki Hori, Mitsuhiro Muto, Takuma Fujii
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Patent number: 11430389Abstract: [Object] It is possible to further improve reliability. [Solution] There is provided a display device including: a pixel unit which is configured with a plurality of pixel circuits arranged in a matrix, each of the pixel circuits including a light emitting element and a driving circuit for driving the light emitting element; scanning lines which are interconnections connected to the respective pixel circuits and are provided to extend in a first direction and correspond to respective rows of a plurality of the pixel circuits; and signal lines which are interconnections connected to the respective pixel circuits and are provided to extend in a second direction orthogonal to the first direction and correspond to respective columns of a plurality of the pixel circuits. One of the scanning lines and the signal lines, provided for the one pixel circuit, which is larger in number is positioned in a lower-level interconnection layer.Type: GrantFiled: October 9, 2020Date of Patent: August 30, 2022Assignee: Sony Semiconductor Solutions CorporationInventors: Takuma Fujii, Naobumi Toyomura
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Patent number: 11391235Abstract: An engine system is provided, including a controller which estimates a mass ratio (G/F) of intake air inside a cylinder (containing fresh air and burnt gas) to fuel, and controls devices of an engine at a given engine speed so that, while a demanded engine load is a first load, at least part of a mixture gas inside the cylinder combusts by flame-propagation when the estimated G/F is below a first G/F, and the entire mixture gas combusts by compression ignition when the estimated G/F is above the first G/F, whereas while the demanded load is a second load (>the first load), at least part of the mixture gas combusts by flame-propagation when the estimated G/F is below a second G/F (<the first G/F), and the entire mixture gas combusts by compression ignition when the estimated G/F is above the second G/F.Type: GrantFiled: October 28, 2021Date of Patent: July 19, 2022Assignee: Mazda Motor CorporationInventors: Takashi Kaminaga, Tatsuya Fujikawa, Masahisa Yamakawa, Naoya Ito, Ryohei Matsuo, Yuta Sasaki, Junki Hori, Mitsuhiro Muto, Takuma Fujii