Patents by Inventor Hanpei Koike
Hanpei Koike 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: 10636751Abstract: A semiconductor device 100 of the present invention includes a front end and back ends A and B, each including a plurality of layers. Further, in the plurality of layers of the back end B, (i) circuits 22, 23, and 24 having a security function are provided in at least one layer having a wiring pitch of 100 nm or more, (ii) a circuit having a security function is provided in at least one wiring layer in M5 or higher level (M5, M6, M7, . . . ), (iii) a circuit having a security function is provided in at least one layer, for which immersion ArF exposure does not need to be used, or (iv) a circuit having a security function is provided in at least one layer that is exposed by using an exposure wavelength of 200 nm or more.Type: GrantFiled: August 3, 2016Date of Patent: April 28, 2020Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Yohei Hori, Yongxun Liu, Shinichi Ouchi, Tetsuji Yasuda, Meishoku Masahara, Toshifumi Irisawa, Kazuhiko Endo, Hiroyuki Ota, Tatsuro Maeda, Hanpei Koike, Yasuhiro Ogasahara, Toshihiro Katashita, Koichi Fukuda
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Patent number: 10262902Abstract: The multiplexer includes a plurality of transmission gates each formed by four-terminal double insulated gate N-type and P-type field effect transistors connected in parallel. One of gates of the N-type gate field effect transistor is connected to a first threshold voltage control node, and a first resistor is connected between the first threshold voltage control node and a first threshold voltage control voltage source. One of gates of the P-type gate field effect transistor is connected to a second threshold voltage control node, and a second resistor is connected between the second threshold voltage control node and a second threshold voltage control voltage source.Type: GrantFiled: September 21, 2016Date of Patent: April 16, 2019Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshihiro Sekigawa, Masakazu Hioki, Hanpei Koike
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Publication number: 20190019766Abstract: A semiconductor device 100 of the present invention includes a front end and back ends A and B, each including a plurality of layers. Further, in the plurality of layers of the back end B, (i) circuits 22, 23, and 24 having a security function are provided in at least one layer having a wiring pitch of 100 nm or more, (ii) a circuit having a security function is provided in at least one wiring layer in M5 or higher level (M5, M6, M7, . . . ), (iii) a circuit having a security function is provided in at least one layer, for which immersion ArF exposure does not need to be used, or (iv) a circuit having a security function is provided in at least one layer that is exposed by using an exposure wavelength of 200 nm or more.Type: ApplicationFiled: August 3, 2016Publication date: January 17, 2019Inventors: Yohei Hori, Yongxun Liu, Shinichi Ouchi, Tetsuji Yasuda, Meishoku Masahara, Toshifumi Irisawa, Kazuhiko Endo, Hiroyuki Ota, Tatsuro Maeda, Hanpei Koike, Yasuhiro Ogasahara, Toshihiro Katashita, Koichi Fukuda
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Publication number: 20180350690Abstract: A multiplexer using an FTMOST and capable of achieving both increase in transfer rate and reduction in leakage current and an integrated circuit using the multiplexer are provided. The multiplexer includes a plurality of pass transistors each formed by a four-terminal double insulated gate field effect transistor. A second gate of the field effect transistor is connected to a threshold voltage control node, and a resistor is connected between the threshold voltage control node and a threshold voltage control voltage source. Also, the multiplexer includes a plurality of transmission gates each formed by four-terminal double insulated gate N-type and P-type field effect transistors connected in parallel. One of gates of the N-type gate field effect transistor is connected to a first threshold voltage control node, and a first resistor is connected between the first threshold voltage control node and a first threshold voltage control voltage source.Type: ApplicationFiled: September 21, 2016Publication date: December 6, 2018Inventors: Toshihiro Sekigawa, Masakazu Hioki, Hanpei Koike
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Patent number: 8537603Abstract: The present invention provides an SRAM cell which does not have the constraints on the size of transistors in order to realize stabilized write and read operations, which has a fewer number of control signal lines per port, and which can be easily multi-ported in the read operation as well as the write operation so that the write and read operations can be performed through a single bit line. The SRAM cell includes a feedback control transistor for controlling connection or disconnection of a positive feedback circuit between particularly two inverters, a write control transistor and a read control transistor connected to a single bit line, and a read buffer transistor connected to the read control transistor.Type: GrantFiled: July 2, 2010Date of Patent: September 17, 2013Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshihiro Sekigawa, Yohei Matsumoto, Hanpei Koike
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Publication number: 20120120717Abstract: The present invention provides an SRAM cell which does not have the constraints on the size of transistors in order to realize stabilized write and read operations, which has a fewer number of control signal lines per port, and which can be easily multi-ported in the read operation as well as the write operation so that the write and read operations can be performed through a single bit line. The SRAM cell includes a feedback control transistor for controlling connection or disconnection of a positive feedback circuit between particularly two inverters, a write control transistor and a read control transistor connected to a single bit line, and a read buffer transistor connected to the read control transistor.Type: ApplicationFiled: July 2, 2010Publication date: May 17, 2012Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Toshihiro Sekigawa, Yohei Matsumoto, Hanpei Koike
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Patent number: 7886250Abstract: The purpose of the present invention is to realize reduction of power consumption of reconfigurable integrated circuits such as FPGAs by decreasing leakage current in SRAMs. A reconfigurable integrated circuit is provided which includes transistors and comprises a first switch with an input terminal, an output terminal, and a control terminal, a first memory with a memory cell connected to the control terminal of the first switch, a second switch capable of shutting down a power supply line or a ground line of the first memory, and a second memory to control the second switch, wherein a value to open the second switch is written into the second memory when the first switch is not operated, thereby shutting down the power supply line or the ground line of the first memory.Type: GrantFiled: April 15, 2008Date of Patent: February 8, 2011Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Yohei Matsumoto, Hanpei Koike
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Patent number: 7797664Abstract: With respect to the reconfigurable integrated circuit, a system for configuring an integrated circuit and a configuration method thereof which do not need a circuit overhead for variation correction and diagnosis of variation are provided. A system for configuring an integrated circuit comprises a reconfigurable integrated circuit 101, a memory device for configuring 102 which holds a plurality of different circuit configurations to be realized on the reconfigurable integrated circuit, the circuit configurations having identical functions but having different performance depending on different probability variables, memory device for testing 103 which holds test data to be achieved by the circuit configuration for the respective function, and a test device 104 for performing a test based on the test data.Type: GrantFiled: June 7, 2007Date of Patent: September 14, 2010Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Yohei Matsumoto, Hanpei Koike
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Publication number: 20080282214Abstract: The purpose of the present invention is to realize reduction of power consumption of reconfigurable integrated circuits such as FPGAs by decreasing leakage current in SRAMs. A reconfigurable integrated circuit is provided which includes transistors and comprises a first switch with an input terminal, an output terminal, and a control terminal, a first memory with a memory cell connected to the control terminal of the first switch, a second switch capable of shutting down a power supply line or a ground line of the first memory, and a second memory to control the second switch, wherein a value to open the second switch is written into the second memory when the first switch is not operated, thereby shutting down the power supply line or the ground line of the first memory.Type: ApplicationFiled: April 15, 2008Publication date: November 13, 2008Applicant: National Institute of Adv. Ind. Science and Tech.Inventors: Yohei Matsumoto, Hanpei Koike
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Patent number: 7423324Abstract: In a double-gate MOS transistor, a substrate, an insulating layer, and a semiconductor layer are formed or laminated in that order, an opening extending to the insulating layer is formed in the semiconductor layer while leaving an island-shaped region, the island-shaped region including a semiconductor crystal layer having a predetermined length and height and a predetermined shape of horizontal section, the semiconductor crystal layer including P-type or N-type source region, channel region, and drain region, in that order, formed therein, a source electrode, gate electrodes, and a drain electrode are provided in contact with side surfaces of the respective regions, and the gate electrodes are provided in contact with the side surfaces of the channel region.Type: GrantFiled: April 5, 2005Date of Patent: September 9, 2008Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshihiro Sekigawa, Yongxun Liu, Meishoku Masahara, Hanpei Koike, Eiichi Suzuki
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Publication number: 20070300201Abstract: With respect to the reconfigurable integrated circuit, a system for configuring an integrated circuit and a configuration method thereof which do not need a circuit overhead for variation correction and diagnosis of variation are provided. A system for configuring an integrated circuit comprises a reconfigurable integrated circuit 101, a memory device for configuring 102 which holds a plurality of different circuit configurations to be realized on the reconfigurable integrated circuit, the circuit configurations having identical functions but having different performance depending on different probability variables, memory device for testing 103 which holds test data to be achieved by the circuit configuration for the respective function, and a test device 104 for performing a test based on the test data.Type: ApplicationFiled: June 7, 2007Publication date: December 27, 2007Applicant: National Inst of Adv Industrial Science and Tech.Inventors: Yohei MATSUMOTO, Hanpei Koike
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Patent number: 7282959Abstract: It is an object of the present invention to provide a CMOS circuit implemented using four-terminal double-insulated-gate field-effect transistors, in which the problems described above can be overcome. Another object of the present invention is to reduce power consumption in a circuit unit that is in an idle state or ready state, i.e., to reduce static power consumption. The two gate electrodes of a P-type four-terminal double-insulated-gate field-effect transistor are electrically connected to each other and are electrically connected to one of the gate electrodes of an N-type four-terminal double-insulated-gate field-effect transistor, whereby an input terminal of a CMOS circuit is formed, and a threshold voltage of the N-type four-terminal double-insulated-gate field-effect transistor is controlled by controlling a potential of the other gate of the N-type four-terminal double-insulated-gate field-effect transistor.Type: GrantFiled: March 7, 2005Date of Patent: October 16, 2007Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshihiro Sekigawa, Hanpei Koike, Yongxun Liu, Meishoku Masahara
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Patent number: 6989706Abstract: In an insulated double gate FET, the threshold voltage during the operation of a transient response thereof is enabled to be arbitrarily and accurately controlled by a method that includes applying a first input signal intended to perform an ordinary logic operation to one of the gate electrodes thereof and applying, in response to this signal, a second signal that has a signal-level temporal-change direction as the first input signal and has at least one of the low level and the high level thereof shifted by a predetermined magnitude or endowed with a predetermined time difference or has the time slower or faster signal level change of the signal to the other gate electrode.Type: GrantFiled: March 25, 2004Date of Patent: January 24, 2006Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshihiro Sekigawa, Hanpei Koike, Tadashi Nakagawa
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Publication number: 20050224884Abstract: In a double-gate MOS transistor, a substrate, an insulating layer, and a semiconductor layer are formed or laminated in that order, an opening extending to the insulating layer is formed in the semiconductor layer while leaving an island-shaped region, the island-shaped region including a semiconductor crystal layer having a predetermined length and height and a predetermined shape of horizontal section, the semiconductor crystal layer including P-type or N-type source region, channel region, and drain region, in that order, formed therein, a source electrode, gate electrodes, and a drain electrode are provided in contact with side surfaces of the respective regions, and the gate electrodes are provided in contact with the side surfaces of the channel region.Type: ApplicationFiled: April 5, 2005Publication date: October 13, 2005Inventors: Toshihiro Sekigawa, Yongxun Liu, Meishoku Masahara, Hanpei Koike, Eiichi Suzuki
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Publication number: 20050199964Abstract: It is an object of the present invention to provide a CMOS circuit implemented using four-terminal double-insulated-gate field-effect transistors, in which the problems described above can be overcome. Another object of the present invention is to reduce power consumption in a circuit unit that is in an idle state or ready state, i.e., to reduce static power consumption. The two gate electrodes of a P-type four-terminal double-insulated-gate field-effect transistor are electrically connected to each other and are electrically connected to one of the gate electrodes of an N-type four-terminal double-insulated-gate field-effect transistor, whereby an input terminal of a CMOS circuit is formed, and a threshold voltage of the N-type four-terminal double-insulated-gate field-effect transistor is controlled by controlling a potential of the other gate of the N-type four-terminal double-insulated-gate field-effect transistor.Type: ApplicationFiled: March 7, 2005Publication date: September 15, 2005Inventors: Toshihiro Sekigawa, Hanpei Koike, Yongxun Liu, Meishoku Masahara
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Publication number: 20050097496Abstract: It is an object of the present invention to provide a high-speed and low-power logical unit formed of a master slice integrated circuit, which offers advantages of reducing the cost and time required for designing masks, and in which a faster operation can be achieved while consuming low power by controlling the operation mode of each logical device forming the logical unit according to the operating state of the corresponding logical device. The high-speed and low-power logical unit comprises a plurality of logical devices including control-voltage input terminals for controlling operation modes, a voltage supply circuit for generating a plurality of different control voltages; and a wiring pattern for supplying a control voltage from the voltage supply circuit for controlling each of the logical devices to operate in an operation mode determined according to an operation of the corresponding transistor to the control-voltage input terminal of the corresponding logical device.Type: ApplicationFiled: September 29, 2004Publication date: May 5, 2005Inventors: Hanpei Koike, Tadashi Nakagawa, Toshihiro Sekigawa
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Publication number: 20040189373Abstract: In a double gate FET, the threshold voltage during the operation of a transient response thereof is enabled to be arbitrarily and accurately controlled by a method that includes applying a first input signal intended to perform an ordinary logic operation to one of the gate electrodes thereof and applying, in response to this signal, a second signal that has a signal-level temporal-change direction as the first input signal and has at least one of the low level and the high level thereof shifted by a predetermined magnitude or endowed with a predetermined time difference or has the time slower or faster signal level change of the signal to the other gate electrode.Type: ApplicationFiled: March 25, 2004Publication date: September 30, 2004Applicant: NAT. INST. OF ADVANCED INDUSTR. SCIENCE AND TECH.Inventors: Toshihiro Sekigawa, Hanpei Koike, Tadashi Nakagawa