Patents by Inventor Yoshiharu Kataoka
Yoshiharu Kataoka 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: 20190345596Abstract: A vapor deposition mask includes a mask substrate including a mask aperture, and a base material of the mask substrate includes fibrous micro cellulose.Type: ApplicationFiled: December 2, 2016Publication date: November 14, 2019Inventors: Yoshiharu KATAOKA, Koji YAMABUCHI
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Patent number: 9029861Abstract: Thin film transistors having a high current drive capability and a suitable threshold voltage are provided. The thin film transistor includes a gate electrode, an insulating layer formed on the gate electrode, a semiconductor layer formed on the insulating layer, and source/drain electrodes formed on the semiconductor layer. The semiconductor layer includes a plurality of regions separated from each other in a longitudinal direction of the source/drain electrodes.Type: GrantFiled: May 20, 2011Date of Patent: May 12, 2015Assignee: Sharp Kabushiki KaishaInventors: Tetsuo Kikuchi, Yoshiharu Kataoka, Shinya Tanaka, Junya Shimada, Chikao Yamasaki
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Patent number: 8963152Abstract: A distance (d1) from an edge of a first region (R) at places (D) where branch electrodes (4b) extending, which branch off from an electrode line (4a) of a second source/drain electrode (4), start to overlap with a first region (R) to the electrode line (4a) is 5 ?m or more. This realizes a TFT including a comb-shaped source/drain structure that enables easy repair of a source-drain leakage.Type: GrantFiled: October 9, 2008Date of Patent: February 24, 2015Assignee: Sharp Kabushiki KaishaInventors: Shinya Tanaka, Tetsuo Kikuchi, Hajime Imai, Hideki Kitagawa, Yoshiharu Kataoka
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Patent number: 8946719Abstract: In at least one embodiment, a TFT includes: a first capacitor formed of a first capacitor electrode connected to a source electrode and a second capacitor electrode; a second capacitor formed of a third capacitor electrode and a fourth capacitor electrode; a first lead-out line; a second lead-out line connected to a gate electrode; a third lead-out line; a fourth lead-out line; a first interconnection; and a second interconnection. This realizes a TFT which can be easily saved from being a defective product even if leakage occurs in a capacitor connected to a TFT body section.Type: GrantFiled: January 27, 2009Date of Patent: February 3, 2015Assignee: Sharp Kabushiki KaishaInventors: Shinya Tanaka, Tetsuo Kikuchi, Hajime Imai, Hideki Kitagawa, Yoshiharu Kataoka
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Publication number: 20140306225Abstract: Thin film transistors having a high current drive capability and a suitable threshold voltage are provided. The thin film transistor includes a gate electrode, an insulating layer formed on the gate electrode, a semiconductor layer formed on the insulating layer, and source/drain electrodes formed on the semiconductor layer. The semiconductor layer includes a plurality of regions separated from each other in a longitudinal direction of the source/drain electrodes.Type: ApplicationFiled: May 20, 2011Publication date: October 16, 2014Applicant: Sharp Kabushiki KaishaInventors: Tetsuo Kikuchi, Yoshiharu Kataoka, Shinya Tanaka, Junya Shimada, Chikao Yamasaki
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Patent number: 8735887Abstract: The present invention provides an ion sensor with which an ion concentration can be stably measured with high accuracy, and a display device. The present invention is an ion sensor that includes a field effect transistor. The ion sensor also includes an ion sensor antenna and a reset device. The ion sensor antenna and the reset device are connected to a gate electrode of the field effect transistor. The reset device is capable of controlling the potential of the gate electrode and the ion sensor antenna to a predetermined potential.Type: GrantFiled: May 18, 2011Date of Patent: May 27, 2014Assignee: Sharp Kabushiki KaishaInventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Patent number: 8717334Abstract: A display device includes: an optical sensor circuit provided in a display region, the optical sensor circuit including a light-receiving element and detecting intensity of light incident to the light-receiving element; and a pressure detection circuit which detects pressure applied to a display surface of a display panel on a basis of a change of the display surface in a panel thickness direction which change is caused by the pressure, with respect to a region in which the pressure is to be detected, both of the detection of the pressure by the pressure detection circuit and the detection of the intensity of the light by the optical sensor circuit being carried out within a period allocated to acquisition of detection data concerning the pressure in the display region.Type: GrantFiled: October 27, 2009Date of Patent: May 6, 2014Assignee: Sharp Kabushiki KaishaInventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Hajime Imai, Hideki Kitagawa
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Patent number: 8716709Abstract: The present invention provides an inexpensive display device that includes an ion sensor portion and a display and that can be miniaturized. The present invention is a display device that includes an ion sensor portion including an ion sensor circuit and a display including a display-driving circuit. The display device has a substrate, and at least one portion of the ion sensor circuit and at least one portion of the display-driving circuit are formed on the same main surface of the substrate.Type: GrantFiled: May 18, 2011Date of Patent: May 6, 2014Assignee: Sharp Kabushiki KaishaInventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Patent number: 8659726Abstract: Transflective-type and reflection type liquid crystal display devices having a high image quality are provided with a good production efficiency. A liquid crystal display device according to the present invention is a liquid crystal display device which includes; a first substrate and a second substrate between which liquid crystal is interposed; a first electrode and a second electrode formed on the first substrate for applying a voltage for controlling an orientation of the liquid crystal; a transistor having an electrode which is electrically connected to the first electrode; a metal layer being formed on the first substrate and including a protrusion, a recess, or an aperture; and a reflective layer formed above the metal layer on the first substrate for reflecting incident light toward a display surface. The metal layer is made of a same material as that of a gate electrode of the transistor.Type: GrantFiled: December 27, 2007Date of Patent: February 25, 2014Assignee: Sharp Kabushiki KaishaInventors: Hajime Imai, Tetsuo Kikuchi, Hideki Kitagawa, Yoshihito Hara, Junya Shimada, Mitsunori Imade, Yoshiharu Kataoka
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Publication number: 20130313554Abstract: The present invention provides an ion sensor with which an ion concentration can be stably measured with high accuracy, and a display device. The present invention is an ion sensor that includes a field effect transistor. The ion sensor also includes an ion sensor antenna and a reset device. The ion sensor antenna and the reset device are connected to a gate electrode of the field effect transistor. The reset device is capable of controlling the potential of the gate electrode and the ion sensor antenna to a predetermined potential.Type: ApplicationFiled: May 18, 2011Publication date: November 28, 2013Inventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Publication number: 20130240746Abstract: The present invention provides an ion sensor and a display device which are capable of detecting positive ions and negative ions with high precision, at low cost. The ion sensor includes: a field effect transistor; an ion sensor antenna; and a capacitor, the ion sensor antenna and one terminal of the capacitor connected to a gate electrode of the field effect transistor, the other terminal of the capacitor receiving voltage.Type: ApplicationFiled: May 18, 2011Publication date: September 19, 2013Inventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Patent number: 8508678Abstract: A liquid crystal display device includes an active matrix substrate (20a) including a plurality of first touch panel interconnects (19b) extending in parallel with each other, a counter substrate (30a) facing the active matrix substrate (20a) and including a plurality of second touch panel interconnects (25a) extending in parallel with each other in a direction intersecting the first touch panel interconnects (19b), a liquid crystal layer (40) provided between the active matrix substrate (20a) and the counter substrate (30a) with an alignment film (9a, 9b) being interposed between the liquid crystal layer (40) and each of the active matrix substrate (20a) and the counter substrate (30a), and a plurality of columnar touch pins (P) connected to the first or second touch panel interconnects (19b, 25a). Repellency to the alignment films (9a, 9b) is imparted to at least a portion of a top portion of each of the touch pins (P).Type: GrantFiled: June 17, 2009Date of Patent: August 13, 2013Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Yoshiharu Kataoka, Takuya Watanabe, Shogo Nishiwaki, Kazunori Morimoto
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Publication number: 20130200373Abstract: The present invention provides an inexpensive display device that includes an ion sensor portion and a display and that can be miniaturized. The present invention is a display device that includes an ion sensor portion including an ion sensor circuit and a display including a display-driving circuit. The display device has a substrate, and at least one portion of the ion sensor circuit and at least one portion of the display-driving circuit are formed on the same main surface of the substrate.Type: ApplicationFiled: May 18, 2011Publication date: August 8, 2013Inventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Patent number: 8411212Abstract: A touch electrode and a detection element are positioned in at least two of pixels. The touch electrode is formed in a first substrate, and is positioned so as to face a counter electrode. The touch electrode contacts the counter electrode and is electrically connected thereto when a second substrate is pressed and bent toward the first substrate. The detection element is connected to the touch electrode, and detects the electrical connection between the touch electrode and the counter electrode.Type: GrantFiled: May 29, 2009Date of Patent: April 2, 2013Assignee: Sharp Kabushiki KaishaInventors: Dai Chiba, Takehiko Sakai, Tetsuo Fujita, Kazunori Morimoto, Yoshiharu Kataoka, Shogo Nishiwaki
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Publication number: 20130069121Abstract: The present invention provides an ion sensor with which an ion concentration in a sample in which both ions are mixed can be measured with high accuracy, a display device, a method for driving the ion sensor, and a method for calculating an ion concentration. The present invention is an ion sensor that includes a field effect transistor. The ion sensor detects one of negative ions and positive ions using the field effect transistor, and consecutively thereafter detects the other of the negative ions and positive ions using the field effect transistor.Type: ApplicationFiled: May 18, 2011Publication date: March 21, 2013Inventors: Atsuhito Murai, Yoshiharu Kataoka, Takuya Watanabe, Yuhko Hisada, Satoshi Horiuchi
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Patent number: 8390771Abstract: A device includes: an active matrix substrate (20a) including a plurality of first display lines (11a) extending parallel to each other and a plurality of second display lines extending parallel to each other in a direction crossing the first display lines (11a); and a counter substrate (30a) including a black matrix (B) provided so as to overlap the first display lines (11a) and the second display lines, wherein the active matrix substrate (20a) includes a plurality of touch panel lines (11b) extending parallel to each other in a direction in which the first display lines (11a) extend, and portions of the black matrix (B) overlapping the second display lines are electrically conductive and are configured so as to come into contact with the touch panel lines (11b) when the surface of the active matrix substrate (20a) or the counter substrate (30a) is pressed.Type: GrantFiled: June 22, 2009Date of Patent: March 5, 2013Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Yoshiharu Kataoka, Takuya Watanabe
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Patent number: 8384853Abstract: It is an object to provide a display that can reliably shield visible light in the entire wavelength regions when viewed from an oblique direction and a viewing angle control element used for the display. A viewing angle control liquid crystal panel (2) is comprised of a liquid crystal cell (21) and an emission-side polarizing plate (22). When light having a part of wavelength components (R,G) in the visible wavelength regions enters at least at a predetermined angle, the liquid crystal cell (21) provides the incident light with a phase difference so as to function as a first light-shielding layer that shields the light of the R and G components not to pass through the emission-side polarizing plate (22).Type: GrantFiled: May 20, 2008Date of Patent: February 26, 2013Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 8243032Abstract: A touch panel includes an insulating substrate, a transparent touch electrode provided on the insulating substrate, and a frame portion connected to a periphery of the touch electrode. The touch panel detects a touched position on the touch electrode based on an electric signal through the frame portion. The frame portion is provided between the insulating substrate and the touch electrode.Type: GrantFiled: January 31, 2007Date of Patent: August 14, 2012Assignee: Sharp Kabushiki KaishaInventors: Shogo Nishiwaki, Yoshiharu Kataoka, Toru Daito, Shinya Tanaka, Yukihiko Nishiyama, Shingo Kawashima, Hiroyuki Kaigawa, Takayuki Urabe
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Patent number: 8199139Abstract: There are provided a viewing angle control device that can provide a pure black display without coloring and have a significantly improved shielding ability in the narrow viewing angle state, and a display using the viewing angle control device. To adjust the VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel (2) that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, translucent electrode films (205r, 205g, 206b), to which alternating-current voltages with different frequencies are applied, are provided on a portion of at least one of a pair of translucent substrates (201, 202) sandwiching the liquid crystal, the portion corresponding to at least one color of a picture element of a display liquid crystal panel (1), so that the voltage-transmittance characteristics of the liquid crystal are adjusted.Type: GrantFiled: March 13, 2008Date of Patent: June 12, 2012Assignee: Sharp Kabushiki KaishaInventors: Tsuyoshi Okazaki, Takehiko Sakai, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Publication number: 20120133867Abstract: A negative C plate (31) is arranged to be between a polarizing plate (32) and a reflective liquid crystal panel (20). A retardation of the negative C plate (31) is set so that a combination of the negative C plate (31) and the liquid crystal panel (20) generates a phase difference of “n?/4+?/8 (n is 0, or a positive or negative integer)” for a one-way light path with respect to linearly-polarized light entering into the liquid crystal display device. This makes it possible to provide, at low cost, a liquid crystal display device whose viewing angle can be narrowed by arbitrarily setting a direction in which visibility is limited.Type: ApplicationFiled: February 6, 2012Publication date: May 31, 2012Applicant: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura