Patents by Inventor Ichiro Takayama
Ichiro Takayama 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: 11434919Abstract: A water pump includes a support portion provided with a bearing hole, and a pulley which is provided at one end of a rotation shaft and which is formed in a cylindrical shape with a bottom. The support portion includes an annular small-diameter portion provided with the bearing hole at the center, and an annular large-diameter portion. At least a part of the small-diameter portion is located at the pulley side relative to the large-diameter portion. An annular first clearance is formed between the cylindrical portion of the pulley and the large-diameter portion. A second cylindrical portion is provided on the bottom portion of the pulley. An annular second clearance is formed between the second cylindrical portion and the small-diameter portion.Type: GrantFiled: March 1, 2021Date of Patent: September 6, 2022Assignee: YAMADA MANUFACTURING CO., LTD.Inventors: Takashi Yamazaki, Ichiro Takayama, Tomokazu Sato
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Publication number: 20210301829Abstract: A water pump includes a support portion provided with a bearing hole, and a pulley which is provided at one end of a rotation shaft and which is formed in a cylindrical shape with a bottom. The support portion includes an annular small-diameter portion provided with the bearing hole at the center, and an annular large-diameter portion. At least a part of the small-diameter portion is located at the pulley side relative to the large-diameter portion. An annular first clearance is formed between the cylindrical portion of the pulley and the large-diameter portion. A second cylindrical portion is provided on the bottom portion of the pulley. An annular second clearance is formed between the second cylindrical portion and the small-diameter portion.Type: ApplicationFiled: March 1, 2021Publication date: September 30, 2021Inventors: Takashi Yamazaki, Ichiro Takayama, Tomokazu Sato
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Patent number: 10396675Abstract: A switching power supply apparatus is provided which reduces the time of application of an input voltage to a choke to suppress a peak current flowing through switch elements when a primary or secondary voltage is 0 V (or a voltage near 0 V). A DAB converter or switching power supply apparatus performs phase control to change at least either a first conduction width or a second conduction width of pairs of diagonally-arranged switch elements, constituting a primary full bridge circuit. The first conduction width is a time width in which a pulse for driving the first switch element and a pulse for driving the fourth switch element overlap temporally. The second conduction width is a time width in which a pulse for driving the second switch element and a pulse for driving the third switch element overlap temporally.Type: GrantFiled: August 2, 2017Date of Patent: August 27, 2019Assignee: TDK CORPORATIONInventors: Ryosuke Hayasaki, Toshiki Murayama, Ichiro Takayama, Kazuki Iwaya
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Publication number: 20180048240Abstract: A switching power supply apparatus is provided which reduces the time of application of an input voltage to a choke to suppress a peak current flowing through switch elements when a primary or secondary voltage is 0 V (or a voltage near 0 V). A DAB converter or switching power supply apparatus performs phase control to change at least either a first conduction width or a second conduction width of pairs of diagonally-arranged switch elements, constituting a primary full bridge circuit. The first conduction width is a time width in which a pulse for driving the first switch element and a pulse for driving the fourth switch element overlap temporally. The second conduction width is a time width in which a pulse for driving the second switch element and a pulse for driving the third switch element overlap temporally.Type: ApplicationFiled: August 2, 2017Publication date: February 15, 2018Inventors: Ryosuke HAYASAKI, Toshiki MURAYAMA, Ichiro TAKAYAMA, Kazuki IWAYA
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Patent number: 8242630Abstract: A multiple power supply integration apparatus measures electric power and stability of power supplies, outputs thereof having irregularity. Based on measured values of the electric power and the stability, certainty of entire supply of the electric power when a use allocation rate of the power supplies is changed is indexed as an evaluation value. The multiple power supply integration apparatus adjusts each converter according to a use allocation rate corresponding to a largest evaluation value, thereby adjusting a magnitude of the electric power supplied from each power supply to a common power line.Type: GrantFiled: March 12, 2010Date of Patent: August 14, 2012Assignee: TDK CorporationInventors: Kazutaka Tamaki, Ichiro Takayama
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Publication number: 20100231050Abstract: A multiple power supply integration apparatus measures electric power and stability of power supplies, outputs thereof having irregularity. Based on measured values of the electric power and the stability, certainty of entire supply of the electric power when a use allocation rate of the power supplies is changed is indexed as an evaluation value. The multiple power supply integration apparatus adjusts each converter according to a use allocation rate corresponding to a largest evaluation value, thereby adjusting a magnitude of the electric power supplied from each power supply to a common power line.Type: ApplicationFiled: March 12, 2010Publication date: September 16, 2010Inventors: Kazutaka TAMAKI, Ichiro Takayama
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Patent number: 7298357Abstract: An active matrix type flat-panel display device includes a flat substrate, a plurality of light emissive elements arranged two dimensionally along columns and lines on the flat substrate, a plurality of selection switches formed on the flat substrate, for sequentially selecting the light emissive elements to provide video signals thereto, selection signal generation circuits for providing selection signals which drive the selection switches in sequence so as to two dimensionally scan the light emissive elements, and a selection signal control circuit for preventing the selection signals from being output from the selection signal generation circuits for a predetermined period of time so as to eliminate overlap between the selection signals.Type: GrantFiled: August 26, 2005Date of Patent: November 20, 2007Assignees: Semiconductor Energy Laboratory Co., Ltd., TDK CorporationInventors: Ichiro Takayama, Michio Arai
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Publication number: 20060033690Abstract: An active matrix type flat-panel display device includes a flat substrate, a plurality of light emissive elements arranged two dimensionally along columns and lines on the flat substrate, a plurality of selection switches formed on the flat substrate, for sequentially selecting the light emissive elements to provide video signals thereto, selection signal generation circuits for providing selection signals which drive the selection switches in sequence so as to two dimensionally scan the light emissive elements, and a selection signal control circuit for preventing the selection signals from being output from the selection signal generation circuits for a predetermined period of time so as to eliminate overlap between the selection signals.Type: ApplicationFiled: August 26, 2005Publication date: February 16, 2006Applicants: Semiconductor Energy Laboratory Co., Ltd., TDK CorporationInventors: Ichiro Takayama, Michio Arai
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Patent number: 6972746Abstract: An active matrix type flat-panel display device includes a flat substrate, a plurality of light emissive elements arranged two dimensionally along columns and lines on the flat substrate, a plurality of selection switches formed on the flat substrate, for sequentially selecting the light emissive elements to provide video signals thereto, selection signal generation circuits for providing selection signals which drive the selection switches in sequence so as to two dimensionally scan the light emissive elements, and a selection signal control circuit for preventing the selection signals from being output from the selection signal generation circuits for a predetermined period of time so as to eliminate overlap between the selection signals.Type: GrantFiled: September 13, 1999Date of Patent: December 6, 2005Assignees: Semiconductor Energy Laboratory Co., Ltd., TDK CorporationInventors: Ichiro Takayama, Michio Arai
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Patent number: 6590554Abstract: A color image display system including a thin-film display device is provided. The device is driven by a current for each pixel of the device and is designed to display colors corresponding to a plurality of color signals. The display system includes a color signal converter for converting the color signal ratio of the plurality of color signals of a color signal source to a ratio of signals suitable for the colors of the thin-film display device. In this way, the color image display system provides an improved image quality, even when colors of light emitted from the thin-film display device are slight variations from NTSC or other image signals, or the current/luminance conversion efficiencies for various colors are not the same level.Type: GrantFiled: November 1, 2000Date of Patent: July 8, 2003Assignee: TDK CorporationInventor: Ichiro Takayama
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Publication number: 20010010374Abstract: The invention provides a thin-film display system comprising, on the same substrate 1, a thin-film display device 9 driven at a current for each pixel to emit light and a silicon thin-film layer 2 on which a circuit for driving the thin-film display device 9 is formed. The display system further comprises a region where at least the thin-film display device 9 and the silicon thin-film layer overlap each other in a film thickness direction, so that a part of light emitted from the thin-film display device is taken out of that region.Type: ApplicationFiled: December 21, 2000Publication date: August 2, 2001Applicant: TDK CORPORATIONInventor: Ichiro Takayama
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Patent number: 6100860Abstract: An image display device having a plurality of pixcels with uniform light intensity comprises an organic EL element (3), a bias FET (2) for emit current control of said EL element, a capacitor (4) coupled with a gate electrode of said bias FET (2) for holding a signal, and a select FET (1) for selectively writing a signal to said capacitor (4), wherein the value S of said bias FET (2) is larger than that of said select FET (1).Type: GrantFiled: May 4, 1998Date of Patent: August 8, 2000Assignees: TDK Corporation, Semiconductor Energy Laboratory Co., Ltd.Inventors: Ichiro Takayama, Kazushi Sugiura, Yukio Yamauchi, Naoya Sakamoto, Mitsufumi Codama, Michio Arai
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Patent number: 5986632Abstract: An active matrix type flat-panel display device includes a flat substrate, a plurality of light emissive elements arranged two dimensionally along columns and lines on the flat substrate, a plurality of selection switches formed on the flat substrate, for sequentially selecting the light emissive elements to provide video signals thereto, selection signal generation circuits for providing selection signals which drive the selection switches in sequence so as to two dimensionally scan the light emissive elements, and a selection signal control circuit for preventing the selection signals from being output from the selection signal generation circuits for a predetermined period of time so as to eliminate overlap between the selection signals.Type: GrantFiled: October 25, 1995Date of Patent: November 16, 1999Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Ichiro Takayama, Michio Arai
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Patent number: 5982345Abstract: An image display system having a plurality of light emitting cells (EL.sub.11 -EL.sub.44) each having a pair of Electro-Luminescence elements (e.sub.1, e.sub.2) coupled in parallel with each other with opposite polarities. The light emitting cells are arranged on a cross point of a matrix, which is addressed through an active addressing method in which a plurality of rows of the matrix are selected simultaneously, and alternate voltage is applied to the matrix.Type: GrantFiled: January 31, 1997Date of Patent: November 9, 1999Assignee: TDK CorporationInventors: Ichiro Takayama, Michio Arai
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Patent number: 5821560Abstract: A thin film transistor which includes an insulation base, first and second gate electrodes, first and second insulation layers, an active layer of semiconductor material, a source electrode and a drain electrode, in which a lateral length of the first gate electrode is narrower than a lateral length of the second gate electrode. Also, the first gate is electrically insulated from the active layer of semiconductor material by the first insulation layer so that the drain current saturates in a high drain voltage region.Type: GrantFiled: March 1, 1996Date of Patent: October 13, 1998Assignees: TKD Corporation, Semiconductor Energy Laboratory Co., Ltd.Inventors: Michio Arai, Kazushi Sugiura, Ichiro Takayama, Yukio Yamauchi, Isamu Kobori, Mitsufumi Codama, Naoya Sakamoto
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Patent number: 5786796Abstract: An image display device which is not affected by image control signal for other pixels and gives adjustable intensity based upon control signal is provided. The image display device has a thin film pixel element EL, a non-linear element 5 for emit control of said thin film pixel element EL, a signal hold capacitor C coupled with a gate electrode of said non-linear element 5, another non-linear element 6 for writing data into said capacitor C, and a resistor R coupled between said capacitor C and a fixed potential source. The resistance of said resistor R is larger than ON resistance and smaller than OFF resistance of said non-linear element 6 for data writing.Type: GrantFiled: March 1, 1996Date of Patent: July 28, 1998Assignees: TDK Corporation, Semiconductor Energy Laboratory Co., Ltd.Inventors: Ichiro Takayama, Michio Arai, Mitsufumi Codama
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Patent number: 5741718Abstract: In forming a thin film transistor (TFT) having an offset structure or a lightly doped drain (LDD) structure, a blocking material having a lower etching rate than that of a material constructing a gate electrode is formed. By using the blocking material as a mask, a gate electrode material is side-etched selectively to form gate electrodes. The blocking material is processed selectively and remains in a drain region side. Also, an offset region or an LDD region is formed under the blocking material by performing an impurity ion implantation. On the other hand, after the gate electrodes are formed, a resist is added and then light exposure is performed from a source region side using a light blocking material as a mask, so that the resist remains in a drain region side of the gate electrode. Also, by implanting an impurity ion, an offset region or an LDD region is formed in the drain region side.Type: GrantFiled: July 16, 1996Date of Patent: April 21, 1998Assignees: Semiconductor Energy Laboratory Co., Ltd., TDK CorporationInventors: Mitsufumi Codama, Ichiro Takayama, Michio Arai
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Patent number: 5644146Abstract: A thin film transistor comprises a dielectric substrate (1), a semiconductor layer (3) of poly-crystalline silicon layer having a drain region (8), an active gate region (4, 8-0), and a source region (7) placed on said substrate (1), a drain terminal (10) and a source terminal (10A) connected to said respective regions for external connection, a gate electrode (6) coupled with a part of said gate region (4) through a dielectric layer (4A), wherein length (d) of said gate electrode (6) is shorter than the length of gate region (4 plus 8-0), so that an offset region (8-0), where no gate electrode faces with said gate region, is produced.Type: GrantFiled: March 21, 1995Date of Patent: July 1, 1997Assignees: TDK Corporation, Semiconductor Energy Laboratory Co., Ltd.Inventors: Michio Arai, Mitsufumi Codama, Ichiro Takayama
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Patent number: 5604139Abstract: In forming a thin film transistor (TFT) having an offset structure or a lightly doped drain (LDD) structure, a blocking material having a lower etching rate than that of a material constructing a gate electrode is formed. By using the blocking material as a mask, a gate electrode material is side-etched selectively to form gate electrodes. The blocking material is processed selectively and remains in a drain region side. Also, an offset region or an LDD region is formed under the blocking material by performing an impurity ion implantation. On the other hand, after the gate electrodes are formed, a resist is added and then light exposure is performed from a source region side using a light blocking material as a mask, so that the resist remains in a drain region side of the gate electrode. Also, by implanting an impurity ion, an offset region or an LDD region is formed in the drain region side.Type: GrantFiled: February 9, 1995Date of Patent: February 18, 1997Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mitsufumi Codama, Ichiro Takayama, Michio Arai
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Patent number: D971008Type: GrantFiled: September 25, 2020Date of Patent: November 29, 2022Assignee: YAMADA MANUFACTURING CO., LTD.Inventors: Takashi Yamazaki, Ichiro Takayama, Tomokazu Sato