Patents by Inventor Tetsuya Ueno
Tetsuya Ueno 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: 11094254Abstract: The present invention discloses a current-driven display device employing an internal compensation scheme and capable of displaying a favorable image with no occurrence of a bright point not included in the original display content. A voltage Vg at a gate terminal of a drive transistor M1 is initialized in a pixel circuit 15 of an organic EL display device before a voltage of a data signal line Dj is written to a holding capacitor C1 via the drive transistor M1 in a diode-connected state. At this time, an initialization voltage Vini is supplied to the gate terminal via a first initialization transistor M4 and a threshold compensation transistor M3. In this manner, a path for initializing the gate terminal of the drive transistor M1 is formed by the first initialization transistor M4 and the threshold compensation transistor M3 connected in series to each other, thereby preventing a voltage reduction at the gate terminal due to leakage current in an off-state transistor.Type: GrantFiled: March 28, 2018Date of Patent: August 17, 2021Assignee: SHARP KABUSHIKI KAISHAInventor: Tetsuya Ueno
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Publication number: 20210134232Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a voltage of a gate terminal of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the drive transistor in a diode-connected state. A drain terminal of a first initialization transistor is connected to an anode electrode of the organic EL element in another pixel circuit adjacent to the drain terminal in a scanning signal line extension direction. In a reset period, a path for applying an initialization voltage to the gate terminal is formed by a second initialization transistor of the other pixel circuit, an initialization connecting line, and the first initialization transistor of the pixel circuit.Type: ApplicationFiled: March 29, 2018Publication date: May 6, 2021Inventor: TETSUYA UENO
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Publication number: 20210110769Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a voltage of a gate terminal of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the diode-connected drive transistors. At this time, an initialization voltage is applied to the gate terminal via a display element initialization transistor, a second light emission control transistor, and a threshold compensation transistor. By initializing the gate terminal with a configuration not including an initialization transistor provided between the gate terminal and an initialization voltage supply line as in the related art, voltage drop at the gate terminal due to leakage current of the transistor in an off state is suppressed.Type: ApplicationFiled: March 28, 2018Publication date: April 15, 2021Inventor: TETSUYA UENO
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Patent number: 10950183Abstract: The present application discloses an organic EL display device adopting the SSD method, which enables sufficient charging with a data voltage and sufficient internal compensation in a pixel circuit even in a case that a display image has a higher resolution. There are provided m demultiplexers corresponding to m sets of data signal line groups, each of which is a set including k data signal lines (in this case, k=3). Each demultiplexer turns selection control signals to a low level (active) during a rest period before a scanning signal line is selected. In this case, a white voltage is supplied as a reset voltage from a data-side drive circuit to each data signal line via each demultiplexer. After that, each demultiplexer sequentially turns the selection control signals to an active state for a predetermined period such that the select control signal turns to the active state during the select period for the scanning signal line.Type: GrantFiled: March 24, 2017Date of Patent: March 16, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Tetsuya Ueno, Asahi Yamato
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Publication number: 20210056901Abstract: The present invention discloses a current-driven display device employing an internal compensation scheme and capable of displaying a favorable image with no occurrence of a bright point not included in the original display content. A voltage Vg at a gate terminal of a drive transistor M1 is initialized in a pixel circuit 15 of an organic EL display device before a voltage of a data signal line Dj is written to a holding capacitor C1 via the drive transistor M1 in a diode-connected state. At this time, an initialization voltage Vini is supplied to the gate terminal via a first initialization transistor M4 and a threshold compensation transistor M3. In this manner, a path for initializing the gate terminal of the drive transistor M1 is formed by the first initialization transistor M4 and the threshold compensation transistor M3 connected in series to each other, thereby preventing a voltage reduction at the gate terminal due to leakage current in an off-state transistor.Type: ApplicationFiled: March 28, 2018Publication date: February 25, 2021Inventor: TETSUYA UENO
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Publication number: 20210043978Abstract: An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solidType: ApplicationFiled: March 22, 2019Publication date: February 11, 2021Applicant: TDK CORPORATIONInventors: Keiko TAKEUCHI, Tetsuya UENO, Gakuho ISOMICHI
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Publication number: 20210036362Abstract: An all-solid-state battery includes a positive electrode current collector layer; a positive electrode active material layer; a negative electrode current collector layer; a negative electrode active material layer; a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and formed of a solid electrolyte; and at least one of a first intermediate layer formed between the positive electrode current collector layer and the positive electrode active material layer, and a second intermediate layer formed between the negative electrode current collector layer and the negative electrode active material layer.Type: ApplicationFiled: March 27, 2019Publication date: February 4, 2021Applicant: TDK CORPORATIONInventors: Tetsuya UENO, Gakuho ISOMICHI, Keiko TAKEUCHI
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Publication number: 20210020112Abstract: A first region and a second region do not include sub-pixel circuits. The second region is surrounded by a display area. The first region is surrounded by the second region. When viewed orthogonally to the display area, a plurality of signal lines are provided across the second region. The signal lines include at least either two or more of scanning signal lines, or two or more of data signal lines. The signal lines across the second region run out of an edge of the first region.Type: ApplicationFiled: April 10, 2018Publication date: January 21, 2021Inventor: TETSUYA UENO
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Publication number: 20210005139Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a gate voltage of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the diode-connected drive transistor. A first initialization voltage line for initialization of the gate voltage and a second initialization voltage line for initialization of an anode voltage of the organic EL element are connected to the pixel circuit. In the initialization of the gate voltage, a voltage of the first initialization voltage line that is higher than the voltage of the second initialization voltage line is provided to the gate terminal of the drive transistor via the first initialization transistor.Type: ApplicationFiled: March 28, 2018Publication date: January 7, 2021Inventor: TETSUYA UENO
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Publication number: 20200402457Abstract: An object of the disclosure is to achieve a current-driven display device able to compensate for a variation in threshold voltage of a drive transistor without causing a variation in luminance. A pixel circuit includes a light-emitting element, a drive transistor, a power supply control transistor, a light emission control transistor, a first writing control transistor, a threshold voltage compensation transistor, a second writing control transistor, an initialization transistor, and a data-holding capacitor. During a data writing period, a scanning signal is active, an initialization voltage is supplied to a first electrode of the data-holding capacitor via the drive transistor, and a data voltage is supplied to a second electrode of the data-holding capacitor.Type: ApplicationFiled: March 19, 2018Publication date: December 24, 2020Inventor: TETSUYA UENO
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Publication number: 20200381774Abstract: An all-solid-state battery includes a positive electrode layer including a positive electrode current collector layer and a positive electrode active material layer provided on the positive electrode current collector layer, a negative electrode layer including a negative electrode current collector layer and a negative electrode active material layer provided on the negative electrode current collector layer, and a solid electrolyte layer which is arranged between the positive electrode layer and the negative electrode layer and contains a solid electrolyte, wherein the all-solid-state battery includes a power storage unit in which the positive electrode layer and the negative electrode layer face each other with the solid electrolyte layer therebetween and an exterior unit, and wherein the exterior unit has an ion conductivity of 10?2 S/cm or less.Type: ApplicationFiled: March 19, 2019Publication date: December 3, 2020Applicant: TDK CORPORATIONInventors: Tetsuya UENO, Gakuho ISOMICHI, Taisuke MASUKO
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Patent number: 10854917Abstract: An active material layer containing a compound represented by a general formula (1): LiaVbAlcTidPeO12 (1), where a, b, c, d, and e in the general formula (1) are numbers satisfying 0.5?a?3.0, 1.20<b?2.00, 0.01?c<0.06, 0.01?d<0.60, and 2.80?e?3.20; and a solid electrolyte layer containing a compound represented by a general formula (2): LifVgAlhTiiPjO12 (2), where f, g, h, i, and j in general formula (2) are numbers satisfying 0.5?f?3.0, 0.01?g<1.00, 0.09<h?0.30, 1.40<i?2.00, and 2.80?j?3.20.Type: GrantFiled: September 25, 2017Date of Patent: December 1, 2020Assignee: TDK CORPORATIONInventors: Hiroshi Sato, Masahiro Oishi, Takeo Tsukada, Gakuho Isomichi, Tetsuya Ueno
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Patent number: 10770522Abstract: An EL device includes a display panel and an imaging element, and the display panel includes a panel substrate and an EL layer, and an imaging hole for guiding light from a subject to the imaging element is formed in the display area to straddle a plurality of scanning signal lines and a plurality of data signal lines when viewed from a direction perpendicular to a display area.Type: GrantFiled: July 10, 2017Date of Patent: September 8, 2020Assignee: SHARP KABUSHIKI KAISHAInventor: Tetsuya Ueno
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Publication number: 20200274194Abstract: The present invention aims to provide an all-solid-state lithium ion secondary battery having a high reliability which does not have a decrease in battery capacity due to absorption of moisture in the air. The all-solid-state lithium ion secondary battery is provided with a battery body having an electrolyte layer between a positive electrode layer and a negative electrode layer, a pair of terminal electrodes respectively connected to the positive electrode layer and the negative electrode layer at both end portions of the battery body, and a moisture-proof layer disposed on surfaces excluding the surfaces to be the terminal electrodes, wherein the moisture-proof layer contains a cured product of a composition containing a polymer compound and metal compound particles.Type: ApplicationFiled: March 28, 2018Publication date: August 27, 2020Applicant: TDK CORPORATIONInventors: Hiroaki TAKAHATA, Hisaji OYAKE, Masayuki MUROI, Tetsuya UENO
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Publication number: 20200262667Abstract: A heater of a sheet feeding device warms up a bundle of sheets set in a sheet cassette to dehumidify it. A first terminal makes contact with the topmost sheet. A second terminal makes contact with the bottommost sheet. When judging the necessity for dehumidification, a controller determines a judging resistance value based on the magnitude of a current passing through the bundle of sheets with a detection voltage applied to the first terminal. When the judging resistance value is equal to or lower than a threshold value, the controller operates the heater. When the determined judging resistance value is higher than a threshold value, the controller does not operate the heater.Type: ApplicationFiled: January 21, 2020Publication date: August 20, 2020Applicant: KYOCERA Document Solutions Inc.Inventor: Tetsuya UENO
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Publication number: 20200075994Abstract: A solid electrolyte, in which an occupied impurity level that is formed by a part of elements contained in a mobile ion-containing material being substituted and that is occupied by electrons is included in a band gap of the mobile ion-containing material, and an amount of charge retention per composition formula of the occupied impurity level is equal to or greater than an amount of charge retention of mobile ions per composition formula of the mobile ion-containing material.Type: ApplicationFiled: March 29, 2018Publication date: March 5, 2020Applicant: TDK CORPORATIONInventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI
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Patent number: 10573710Abstract: In the display device, the plurality of display bodies are jointed together and fixed to the elongated flexible circuit board.Type: GrantFiled: May 29, 2017Date of Patent: February 25, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Tetsuya Ueno, Ryoh Araki, Asahi Yamato
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Publication number: 20200035168Abstract: The present application discloses an organic EL display device adopting the SSD method, which enables sufficient charging with a data voltage and sufficient internal compensation in a pixel circuit even in a case that a display image has a higher resolution. There are provided m demultiplexers corresponding to m sets of data signal line groups, each of which is a set including k data signal lines (in this case, k=3). Each demultiplexer turns selection control signals to a low level (active) during a rest period before a scanning signal line is selected. In this case, a white voltage is supplied as a reset voltage from a data-side drive circuit to each data signal line via each demultiplexer. After that, each demultiplexer sequentially turns the selection control signals to an active state for a predetermined period such that the select control signal turns to the active state during the select period for the scanning signal line.Type: ApplicationFiled: March 24, 2017Publication date: January 30, 2020Inventors: Tetsuya UENO, Asahi YAMATO
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Publication number: 20200020976Abstract: A solid electrolyte according to an embodiment includes a lithium-containing phosphoric acid compound with a cubic crystal structure.Type: ApplicationFiled: March 29, 2018Publication date: January 16, 2020Applicant: TDK CORPORATIONInventors: Gakuho ISOMICHI, Tetsuya UENO
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Publication number: 20200020978Abstract: This solid electrolyte is a zirconium phosphate-based solid electrolyte in which a part of phosphorous or zirconium that is contained in the solid electrolyte is substituted with an element with a variable valence.Type: ApplicationFiled: March 29, 2018Publication date: January 16, 2020Applicant: TDK CORPORATIONInventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI