Patents by Inventor Makoto Shibusawa
Makoto Shibusawa 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: 20150097810Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Applicant: Japan Display Inc.Inventors: Yoshiro AOKI, Takashi NAKAMURA, Masahiro TADA, Hirotaka HAYASHI, Makoto SHIBUSAWA, Yutaka UMEDA, Miyuki ISHIKAWA
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Publication number: 20140111404Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.Type: ApplicationFiled: October 17, 2013Publication date: April 24, 2014Applicant: Japan Display Inc.Inventors: Kazuyoshi OMATA, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
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Publication number: 20140111557Abstract: According to one embodiment, a display apparatus includes a plurality of pixels and a plurality of control lines. A pixel circuit of each of the pixels includes a driving transistor, an output switch, a pixel switch and a storage capacitance. A number of pixels PX of the plurality of pixels which are adjacent to one another in a column direction share the output switch.Type: ApplicationFiled: October 17, 2013Publication date: April 24, 2014Applicant: Japan Display Inc.Inventors: Kazuyoshi OMATA, Hiroyuki Kimura, Makoto Shibusawa
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Patent number: 8432381Abstract: An active matrix display includes a substrate, a video signal line on the substrate, first and second power lines on the substrate, a self-emitting element having two display electrodes facing each other and connected to one of the first and second power lines, a drive transistor connected between the first power line and one of the display electrodes, a storage capacitor having a first electrode connected to a gate electrode of the drive transistor and a second electrode facing the first electrode with interposing an insulating layer, the storage capacitor and the gate electrode of the drive transistor being arranged under the display electrode, and a shield electrode arranged between the display electrode connected to the drive transistor and at least one of the first electrode of the storage capacitor and the gate electrode with interposing an insulating layer, and set at a constant potential.Type: GrantFiled: September 24, 2009Date of Patent: April 30, 2013Assignee: Japan Display Central Inc.Inventor: Makoto Shibusawa
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Patent number: 7944413Abstract: An organic EL display includes plural pixels, each including a drive control element, an organic EL element and an output control switch. The drive control element includes a control terminal, a first terminal connected to a first power supply terminal, and a second terminal outputting a current with a magnitude corresponding to a voltage between the control terminal and the first terminal. The organic EL element includes a first electrode, a second electrode connected to a second power supply terminal, and an active layer interposed between the first and second electrodes. The output control switch is connected between the second terminal and the first electrode. In a part of the pixels, a conductive path electrically connecting the first electrode to the first power supply terminal is broken at a portion which connects the output control switch to the first electrode.Type: GrantFiled: December 10, 2008Date of Patent: May 17, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventor: Makoto Shibusawa
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Publication number: 20100079419Abstract: An active matrix display includes a substrate, a video signal line on the substrate, first and second power lines on the substrate, a self-emitting element having two display electrodes facing each other and connected to one of the first and second power lines, a drive transistor connected between the first power line and one of the display electrodes, a storage capacitor having a first electrode connected to a gate electrode of the drive transistor and a second electrode facing the first electrode with interposing an insulating layer, the storage capacitor and the gate electrode of the drive transistor being arranged under the display electrode, and a shield electrode arranged between the display electrode connected to the drive transistor and at least one of the first electrode of the storage capacitor and the gate electrode with interposing an insulating layer, and set at a constant potential.Type: ApplicationFiled: September 24, 2009Publication date: April 1, 2010Inventor: Makoto SHIBUSAWA
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Publication number: 20090096774Abstract: A method of manufacturing a display includes selecting at least one of pixels which can be seen as a luminous line or a luminous dot with a dark line-like tail when an inspection image is displayed, and breaking a first conductive path connecting a display element to a power supply terminal and a second conductive path connecting the first conductive path to a video signal line in the selected pixel.Type: ApplicationFiled: December 10, 2008Publication date: April 16, 2009Inventor: Makoto SHIBUSAWA
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Patent number: 7482187Abstract: A method of manufacturing a display includes selecting at least one of pixels which can be seen as a luminous line or a luminous dot with a dark line-like tail when an inspection image is displayed, and breaking a first conductive path connecting a display element to a power supply terminal and a second conductive path connecting the first conductive path to a video signal line in the selected pixel.Type: GrantFiled: November 1, 2006Date of Patent: January 27, 2009Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventor: Makoto Shibusawa
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Publication number: 20080088543Abstract: Provided is a display including pixels (PX) arrayed in a matrix form and video signal lines (DL) arranged correspondently with columns which the pixels (PX) form, wherein each pixel (PX) includes a display element (OLED) and a pixel circuit including a drive transistor (DR) whose source is connected to a first power supply terminal (ND1) and whose drain is connected to the display element (OLED), and wherein a periodic variation in a property of the drive transistor (DR) appears in a row which the pixels (PX) form.Type: ApplicationFiled: January 19, 2005Publication date: April 17, 2008Inventor: Makoto Shibusawa
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Patent number: 7355220Abstract: An array substrate includes an insulating substrate, pixel circuits arranged in a matrix on the insulating substrate, and video signal lines arranged correspondently with columns which the pixel circuits form. Each pixel circuit includes a drive transistor whose source is connected to a power supply terminal, a pixel electrode, an output control switch connected between a drain of the drive transistor and the pixel electrode, a selector switch connected between the drain and the video signal line, a diode-connecting switch including switching elements connected in series between the drain and a gate of the drive transistor, a first capacitor including an electrode connected to the gate, and a second capacitor including an electrode to which two of the switching elements are connected in parallel.Type: GrantFiled: March 27, 2006Date of Patent: April 8, 2008Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Kazuyoshi Omata, Makoto Shibusawa
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Patent number: 7335914Abstract: Each pixel of a display includes a first thin film transistor whose source is connected to a first power supply terminal, a second thin film transistor which is different in conduction type from the first thin film transistor and whose source and drain are connected to the drain of the first thin film transistor and the first power supply terminal, respectively, an output control switch, and a display element connected in series with the output control switch between a second power supply terminal and the drain of the first thin film transistor.Type: GrantFiled: December 21, 2005Date of Patent: February 26, 2008Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventor: Makoto Shibusawa
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Patent number: 7333079Abstract: In an active matrix organic EL display including a drive control element which has a first terminal connected to a first power supply terminal, a control terminal, and a second terminal which outputs a driving current having a magnitude corresponding to the voltage between the first terminal and the control terminal, a capacitor which has one electrode connected to the control terminal and can maintain the voltage between the first terminal and the control terminal constant, and an organic EL element connected between the second terminal and a second power supply terminal, a plurality of switches connected in series are used as switches between the second terminal and the control terminal to obtain a perfect nonconductive state, and the switch on the control terminal side is set in the nonconductive state earlier than the remaining switch, thereby decreasing the potential shift amount generated by the capacitance of the switches themselves.Type: GrantFiled: July 22, 2005Date of Patent: February 19, 2008Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Makoto Shibusawa, Yoshiro Aoki, Hirondo Nakatogawa
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Publication number: 20070075944Abstract: A method of manufacturing a display includes selecting at least one of pixels which can be seen as a luminous line or a luminous dot with a dark line-like tail when an inspection image is displayed, and breaking a first conductive path connecting a display element to a power supply terminal and a second conductive path connecting the first conductive path to a video signal line in the selected pixel.Type: ApplicationFiled: November 1, 2006Publication date: April 5, 2007Inventor: Makoto Shibusawa
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Publication number: 20060290632Abstract: A display includes pixels arranged in a matrix. Each pixel includes a drive transistor whose source or drain being connected to a power supply terminal, a display element including a pixel electrode, a counter electrode connected to a second power supply terminal, and an active layer interposed therebetween, and a switching transistor. The drive transistor and the switching transistor are connected in series between the power supply terminal and the pixel electrode in this order. In each pixel, a semiconductor layer in which the source and drain of the drive transistor are formed and a semiconductor layer in which source and drain of the first switching transistor are formed are joined together.Type: ApplicationFiled: June 21, 2006Publication date: December 28, 2006Inventor: Makoto SHIBUSAWA
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Publication number: 20060221251Abstract: A display includes an insulating substrate, a video signal line placed on a main surface of the insulating substrate and including first and second ends, pixels connected to the video signal line, a video signal line driver to which the first end is connected, an inspection signal line placed near the second end and including third and fourth ends, the third end being located at an edge of the main surface, and an analog switch connected between the second and fourth ends.Type: ApplicationFiled: March 27, 2006Publication date: October 5, 2006Inventors: Kazuyoshi Omata, Makoto Shibusawa, Yoshiro Aoki, Hiroshi Nakayama
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Publication number: 20060221005Abstract: Each pixel of a display includes a drive control element including first and second terminals and a control terminal, a display element including first and second electrodes and an active layer interposed therebetween, an output control switch connected between the second terminal and the first electrode, a switch group capable of switching between a state that the second terminal, the control terminal, and a video signal line are connected to one another and a state that they are disconnected from one another, first to third capacitors, and first to third switches. The first switch, the first capacitor, the second switch, and the second capacitor are connected in series between the control terminal and a constant-potential terminal in this order. The third switch and the third capacitor are connected in series between the control terminal and an electrode of the second capacitor to which the second switch is connected.Type: ApplicationFiled: March 23, 2006Publication date: October 5, 2006Inventors: Kazuyoshi OMATA, Makoto Shibusawa
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Publication number: 20060220580Abstract: An array substrate includes an insulating substrate, pixel circuits arranged in a matrix on the insulating substrate, and video signal lines arranged correspondently with columns which the pixel circuits form. Each pixel circuit includes a drive transistor whose source is connected to a power supply terminal, a pixel electrode, an output control switch connected between a drain of the drive transistor and the pixel electrode, a selector switch connected between the drain and the video signal line, a diode-connecting switch including switching elements connected in series between the drain and a gate of the drive transistor, a first capacitor including an electrode connected to the gate, and a second capacitor including an electrode to which two of the switching elements are connected in parallel.Type: ApplicationFiled: March 27, 2006Publication date: October 5, 2006Inventors: Kazuyoshi Omata, Makoto Shibusawa
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Publication number: 20060202920Abstract: A display includes a substrate and pixels arranged in a matrix form on the substrate. Each of the pixels includes a display element and first and second field-effect transistors equal in conduction type to each other. The display element and the first field-effect transistor are electrically connected in series between first and second power supply terminals. A source of the second field-effect transistor is electrically connected to a gate of the first field-effect transistor. The first field-effect transistor is deeper in threshold voltage than the second field-effect transistor.Type: ApplicationFiled: February 28, 2006Publication date: September 14, 2006Inventor: Makoto Shibusawa
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Publication number: 20060139260Abstract: Each pixel of a display includes a light emitting element including an anode connected to a high potential power supply terminal, a cathode, and an active layer interposed between the anode and the cathode, a drive control element including a p channel thin film transistor whose drain is connected to a low potential power supply terminal lower in electric potential than the high potential power supply terminal, an output control switch connected between the cathode and a source of the p channel thin film transistor, a capacitor connected between a gate of the p channel thin film transistor and the source, and a diode connecting switch connected between the gate and the drain.Type: ApplicationFiled: December 21, 2005Publication date: June 29, 2006Inventor: Makoto Shibusawa
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Publication number: 20060138420Abstract: Each pixel of a display includes a first thin film transistor whose source is connected to a first power supply terminal, a second thin film transistor which is different in conduction type from the first thin film transistor and whose source and drain are connected to the drain of the first thin film transistor and the first power supply terminal, respectively, an output control switch, and a display element connected in series with the output control switch between a second power supply terminal and the drain of the first thin film transistor.Type: ApplicationFiled: December 21, 2005Publication date: June 29, 2006Inventor: Makoto Shibusawa