Patents by Inventor Makoto Takatoku
Makoto Takatoku 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: 20130234219Abstract: Disclosed herein is a transistor including: a semiconductor layer; a first gate insulation film and a first interlayer insulation film which are provided on a specific surface side of the semiconductor layer; a first gate electrode provided at a location between the first gate insulation film and the first interlayer insulation film; an insulation film provided on the other surface side of the semiconductor layer; source and drain electrodes provided by being electrically connected to the semiconductor layer; and a shield electrode layer provided in such a way that at least portions of the shield electrode layer face edges of the first gate electrode, wherein at least one of the first gate insulation film, the first interlayer insulation film and the insulation film include a silicon-oxide film.Type: ApplicationFiled: May 3, 2013Publication date: September 12, 2013Applicant: Sony CorporationInventors: Yasuhiro Yamada, Ryoichi Ito, Tsutomu Tanaka, Makoto Takatoku, Michiru Senda
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Patent number: 8456460Abstract: The present invention provides a sensor element including two diode elements connected in series to each other, and a capacitive element having one end connected to a junction point between the two diode elements. Each of the diode elements includes a semiconductor layer having a p-type semiconductor region and an n-type semiconductor region facing each other in an in-plane direction, an anode electrode connected to the p-type semiconductor region, a cathode electrode connected to the n-type semiconductor region, a gate insulting film adjoining the semiconductor layer in a stacking direction, and a gate electrode facing the semiconductor layer with the gate insulating film in between.Type: GrantFiled: September 18, 2009Date of Patent: June 4, 2013Assignee: Japan Display West, Inc.Inventors: Tsutomu Tanaka, Makoto Takatoku, Michiru Senda, Keiichiro Ishihara
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Publication number: 20120313103Abstract: Disclosed herein is a transistor including: a semiconductor layer; a first gate insulation film and a first interlayer insulation film which are provided on a specific surface side of the semiconductor layer; a first gate electrode provided at a location between the first gate insulation film and the first interlayer insulation film; an insulation film provided on the other surface side of the semiconductor layer; source and drain electrodes provided by being electrically connected to the semiconductor layer; and a shield electrode layer provided in such a way that at least portions of the shield electrode layer face edges of the first gate electrode, wherein at least one of the first gate insulation film, the first interlayer insulation film and the insulation film include a silicon-oxide film.Type: ApplicationFiled: May 31, 2012Publication date: December 13, 2012Applicant: SONY CORPORATIONInventors: Yasuhiro Yamada, Ryoichi Ito, Tsutomu Tanaka, Makoto Takatoku, Michiru Senda
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Publication number: 20120299070Abstract: Disclosed herein is a photoelectric conversion element including: a first semiconductor layer of a first conductivity type provided above a substrate; a second semiconductor layer of a second conductivity type provided in a higher layer than the first semiconductor layer; a third semiconductor layer of a third conductivity type provided between the first and second semiconductor layers and lower in electrical conductivity than the first and second semiconductor layers; and a light-shielding layer provided between the substrate and first semiconductor layer.Type: ApplicationFiled: May 17, 2012Publication date: November 29, 2012Applicant: SONY CORPORATIONInventors: Yasuhiro Yamada, Tsutomu Tanaka, Makoto Takatoku, Ryoichi Ito, Michiru Senda
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Publication number: 20120175618Abstract: There are provided a transistor and a radiation imaging device in which a shift in a threshold voltage due to radiation exposure may be suppressed. The transistor includes a first gate electrode, a first gate insulator, a semiconductor layer, a second gate insulator, and a second gate electrode in this order on a substrate. Each of the first and second gate insulators includes one or a plurality of silicon compound films having oxygen, and a total sum of thicknesses of the silicon compound films is 65 nm or less.Type: ApplicationFiled: December 22, 2011Publication date: July 12, 2012Applicant: SONY CORPORATIONInventors: Yasuhiro Yamada, Tsutomu Tanaka, Makoto Takatoku
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Patent number: 8144102Abstract: The present invention provides a memory element includes a thin film transistor configured to have a semiconductor thin film and a pair of gate electrodes that vertically sandwich the semiconductor thin film with intermediary of insulating films therebetween, and a capacitor configured to be connected to a first gate electrode of the pair of gate electrodes, wherein data is stored in the capacitor connected to the first gate electrode, and data stored in the capacitor is read out by controlling a second gate electrode of the pair of gate electrodes.Type: GrantFiled: October 9, 2008Date of Patent: March 27, 2012Assignee: Sony CorporationInventor: Makoto Takatoku
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Publication number: 20120038018Abstract: A photoelectric conversion element includes a first semiconductor layer that exhibits a first conductivity type and is provided in a selective area over a substrate, a second semiconductor layer that exhibits a second conductivity type and is disposed opposed to the first semiconductor layer, and a third semiconductor layer that is provided between the first and second semiconductor layers and exhibits a substantially intrinsic conductivity type. The third semiconductor layer has at least one corner part that is not in contact with the first semiconductor layer.Type: ApplicationFiled: August 2, 2011Publication date: February 16, 2012Applicant: SONY CORPORATIONInventors: Yasuhiro Yamada, Tsutomu Tanaka, Makoto Takatoku, Ryoichi Ito
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Patent number: 8115188Abstract: Disclosed herein is a memory element, including a parallel combination of a thin film transistor; and a resistance change element, the thin film transistor including a semiconductor thin film in which a channel region, and an input terminal and an output terminal located on both sides of the channel region, respectively, are formed, and a gate electrode overlapping the channel region through an insulating film to become a control terminal, the resistance change element including one conductive layer connected to the input terminal side of the thin film transistor, the other conductive layer connected to the output terminal side of the thin film transistor, and at least one oxide film layer disposed between the one conductive layer and the other conductive layer.Type: GrantFiled: January 23, 2009Date of Patent: February 14, 2012Assignee: Sony CorporationInventors: Dharam Pal Gosain, Makoto Takatoku, Yoshiharu Nakajima, Tsutomu Tanaka
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Publication number: 20110204246Abstract: A radiation image pickup apparatus allowed to restore a change in characteristics in a pixel transistors caused by radiation, and a method of driving the same are provided. The radiation image pickup apparatus includes: a pixel section including a plurality of unit pixels and generating an electrical signal based on incident radiation, each of the unit pixels including one or more pixel transistors and a photoelectric conversion element; a drive section for selectively driving the unit pixels of the pixel section; and a characteristic restoring section including a first constant current source for annealing and a selector switch for changing a current path from the unit pixels to the first constant current source at the time of non-measurement of the radiation, and allowing an annealing current to flow through the pixel transistor, thereby restoring characteristics of the pixel transistor.Type: ApplicationFiled: February 15, 2011Publication date: August 25, 2011Applicant: SONY CORPORATIONInventors: Tsutomu Tanaka, Makoto Takatoku, Yasuhiro Yamada, Ryoichi Ito
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Publication number: 20110127991Abstract: A sensor device includes sensor elements arranged in a matrix form, and a sensor driving section driving the sensor elements. Each of the sensor elements includes a photoelectric conversion element generating electric charge, a storage node storing electric charge, to show a voltage which fluctuates according to the stored electric charge, a reset transistor resetting the voltage in the storage node and a readout section reading the voltage value resulted from the stored electric charge in the storage node, to output the resultant voltage value. The sensor driving section controls the reset transistor so that the storage nodes of the sensor elements over sensor element lines are reset into the predetermined reset voltage at a time, and then performs read control after a lapse of a predetermined exposure period to allow the sensor detection signals to be sequentially outputted from the respective sensor elements arranged in each sensor element lines.Type: ApplicationFiled: November 16, 2010Publication date: June 2, 2011Applicant: SONY CORPORATIONInventors: Michiru Senda, Makoto Takatoku
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Publication number: 20110128428Abstract: A sensor device includes sensor elements two-dimensionally arranged and a sensor driving section driving the sensor elements. Each of the sensor elements includes a photoelectric conversion element generating electric charge according to an amount of received light, a charge storage section connected to one end of the photoelectric conversion element and storing electric charge generated by the photoelectric conversion element, a readout section reading either a voltage value resulted from the electric charge in the charge storage section or the stored electric charge, to output the read voltage value or the read electric charge and a reset section resetting the electric charge in the charge storage section through supplying a predetermined reset voltage to the charge storage section. The sensor driving section controls the reset section so that the predetermined reset voltage is continuously or intermittently supplied to the charge storage section over a period exceeding one horizontal scan period.Type: ApplicationFiled: November 18, 2010Publication date: June 2, 2011Applicant: SONY CORPORATIONInventors: Makoto Takatoku, Michiru Senda
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Publication number: 20110115767Abstract: Techniques are described for detecting and compensating for characteristic changes of a photoelectric conversion element, such as changes related to the temperature of the photoelectric conversion element. A display device that includes an I/O display panel and a light-receiving drive circuit is disclosed. The I/O display panel includes a plurality of display pixels; and a plurality of photoelectric conversion elements including a first photoelectric conversion element that substantially is shielded from light and a second photoelectric conversion element that is exposed to light. The light-receiving drive circuit receives a first detection signal from the first photoelectric conversion element and resets the second photoelectric conversion element based on the first detection signal.Type: ApplicationFiled: November 8, 2010Publication date: May 19, 2011Applicant: Sony CorporationInventors: Michiru Senda, Makoto Takatoku, Tsutomu Harada
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Publication number: 20110043471Abstract: Touch sensor methods and apparatus are provided. A first photodiode includes an i-region of a first length. A second photodiode includes an i-region with a second length. A sensing component including a capacitive element is operably coupled to the first photodiode and the second photodiode. The first length of the i-region of the first photodiode is different than the second length of the i-region of the second photodiode.Type: ApplicationFiled: August 6, 2010Publication date: February 24, 2011Applicant: SONY CORPORATIONInventors: Michiru Senda, Yoshiharu Nakajima, Keiichiro Ishihara, Tsutomu Tanaka, Makoto Takatoku, Masanobu Ikeda, Ryoichi Ito
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Publication number: 20100264422Abstract: A thin film semiconductor device formed as integrated circuits on an insulating substrate with bottom gate type thin film transistors stacked with gate electrodes, a gate insulating film and a semiconductor thin film in the order from below upward. The gate electrodes comprise metallic materials with thickness less than 100 nm. The gate insulating film has a thickness thicker than the gate electrodes. The semiconductor thin film comprises polycrystalline silicon crystallized by a laser beam. By reducing thickness of metallic gate electrodes, thermal capacity becomes small and difference in thermal condition on the metallic gate electrodes and on the insulating substrate made of glass or the like becomes small. This invention relates to the task of uniforming and optimizing recrystallization by a laser anneal treatment provided for the semiconductor thin film which works as an active layer of the bottom gate type thin film transistors.Type: ApplicationFiled: June 25, 2010Publication date: October 21, 2010Applicant: Sony CorporationInventors: Hisao Hayashi, Masahiro Fujino, Yasushi Shimogaichi, Makoto Takatoku
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Publication number: 20100171120Abstract: In the case of forming switching elements and light sensor elements over the same substrate, an increase in the film thickness of active layers in an attempt to enhance the sensitivity of the light sensor elements would adversely affect the characteristics of the switching elements (TFTs). In a configuration of a display in which a channel layer 25 for constituting thin film transistors to form the switching elements for pixels and a photoelectric conversion layer 35 for constituting the light sensor elements are provided over a gate insulating film 24 on a glass substrate 5 to be provided with a plurality of pixels arranged in a matrix pattern, the photoelectric conversion layer 35 is formed to be thicker than the channel layer 25, and/or the photoelectric conversion layer 35 is formed of a material different from the material for the channel layer 25, whereby the light absorption coefficient of the photoelectric conversion layer 35 is made to be higher than that of the channel layer 25.Type: ApplicationFiled: September 18, 2008Publication date: July 8, 2010Applicant: SONY CORPORATIONInventors: Dharam Pal Gosain, Tsutomu Tanaka, Makoto Takatoku
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Publication number: 20100085339Abstract: The present invention provides a sensor element including two diode elements connected in series to each other, and a capacitive element having one end connected to a junction point between the two diode elements. Each of the diode elements includes a semiconductor layer having a p-type semiconductor region and an n-type semiconductor region facing each other in an in-plane direction, an anode electrode connected to the p-type semiconductor region, a cathode electrode connected to the n-type semiconductor region, a gate insulting film adjoining the semiconductor layer in a stacking direction, and a gate electrode facing the semiconductor layer with the gate insulating film in between.Type: ApplicationFiled: September 18, 2009Publication date: April 8, 2010Applicant: Sony CorporationInventors: Tsutomu TANAKA, Makoto Takatoku, Michiru Senda, Keiichiro Ishihara
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Publication number: 20090194760Abstract: Disclosed herein is a memory element, including a parallel combination of a thin film transistor; and a resistance change element, the thin film transistor including a semiconductor thin film in which a channel region, and an input terminal and an output terminal located on both sides of the channel region, respectively, are formed, and a gate electrode overlapping the channel region through an insulating film to become a control terminal, the resistance change element including one conductive layer connected to the input terminal side of the thin film transistor, the other conductive layer connected to the output terminal side of the thin film transistor, and at least one oxide film layer disposed between the one conductive layer and the other conductive layer.Type: ApplicationFiled: January 23, 2009Publication date: August 6, 2009Applicant: Sony CorporationInventors: Dharam Pal Gosain, Makoto Takatoku, Yoshiharu Nakajima, Tsutomu Tanaka
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Publication number: 20090102751Abstract: The present invention provides a memory element includes a thin film transistor configured to have a semiconductor thin film and a pair of gate electrodes that vertically sandwich the semiconductor thin film with intermediary of insulating films therebetween, and a capacitor configured to be connected to a first gate electrode of the pair of gate electrodes, wherein data is stored in the capacitor connected to the first gate electrode, and data stored in the capacitor is read out by controlling a second gate electrode of the pair of gate electrodes.Type: ApplicationFiled: October 9, 2008Publication date: April 23, 2009Applicant: SONY CORPORATIONInventor: Makoto Takatoku
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Patent number: 6933185Abstract: The state of a polysilicon film formed by excimer laser annealing an amorphous silicon film is to be evaluated. When the amorphous silicon film is annealed to form a polysilicon film, linearity or periodicity presents itself in the spatial structure of the film surface of the polysilicon film formed depending on the energy applied to the amorphous silicon during annealing. This linearity or periodicity is processed as an image and represented numerically from the image by exploiting the linearity or periodicity. The state of the polysilicon film is checked based on the numerical results.Type: GrantFiled: March 24, 2003Date of Patent: August 23, 2005Assignee: Sony CorporationInventors: Hiroyuki Wada, Yoshimi Hirata, Ayumu Taguchi, Koichi Tatsuki, Nobuhiko Umezu, Shigeo Kubota, Tetsuo Abe, Akifumi Ooshima, Tadashi Hattori, Makoto Takatoku, Yukiyasu Sugano
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Patent number: 6734635Abstract: A process of crystallizing a semiconductor thin film previously formed on a substrate by irradiating the semiconductor thin film with a laser beam, includes: a preparation step of dividing the surface of the substrate into a plurality of division regions, and shaping a laser beam to adjust an irradiation region of the laser beam such that one of the division regions is collectively irradiated with one shot of the laser beam; a crystallization step of irradiating one of the division regions with the laser beam while optically modulating the intensity of the laser beam such that a cyclic light-and-dark pattern is projected on the irradiation region, and irradiating the same division region by at least one time after shifting the pattern such that the light and dark portions of the pattern after shifting are not overlapped to those of the pattern before shifting; and a scanning step of shifting the irradiation region of the laser beam to the next division region, and repeating the crystallization step for theType: GrantFiled: October 3, 2001Date of Patent: May 11, 2004Assignee: Sony CorporationInventors: Masafumi Kunii, Makoto Takatoku, Michio Mano