Patents by Inventor Shigeaki Seki
Shigeaki Seki 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: 11921467Abstract: A watch includes a crystal oscillator, a controller including an oscillation circuit configured to cause the crystal oscillator to oscillate, wiring that couples the crystal oscillator with the controller, and the crystal oscillator, a storage container that stores the crystal oscillator, the wiring, and the controller, and an outer case that stores the storage container, in which the crystal oscillator and the controller are placed side by side inside the storage container in plan view.Type: GrantFiled: January 29, 2021Date of Patent: March 5, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Shigeaki Seki, Yutaka Yamazaki, Atsushi Miyazaki, Toshiya Usuda
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Publication number: 20210240139Abstract: A watch includes a crystal oscillator, a controller including an oscillation circuit configured to cause the crystal oscillator to oscillate, wiring that couples the crystal oscillator with the controller, and the crystal oscillator, a storage container that stores the crystal oscillator, the wiring, and the controller, and an outer case that stores the storage container, in which the crystal oscillator and the controller are placed side by side inside the storage container in plan view.Type: ApplicationFiled: January 29, 2021Publication date: August 5, 2021Inventors: Shigeaki SEKI, Yutaka YAMAZAKI, Atsushi MIYAZAKI, Toshiya USUDA
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Display device and timepiece comprising a wiring board layered on a back surface of a back substrate
Patent number: 8873015Abstract: A display device that has a display panel having a front substrate, an image forming unit, and a back substrate rendered together in layers, and a wiring board layered on the back surface of the back substrate. A plurality of input/output pins are formed on the front surface of the back substrate, and a plurality of connection pins that are electrically connected to the input/output pins by respective conductor members are formed on the back surface of the wiring board.Type: GrantFiled: May 9, 2012Date of Patent: October 28, 2014Assignee: Seiko Epson CorporationInventors: Shigeaki Seki, Kenichi Okuhara -
Patent number: 8610748Abstract: Disclosed is a method for driving an electrophoretic display device including a first electrode, a second electrode facing the first electrode, and an electrophoretic element disposed between the first electrode and the second electrode. The method includes a display driving step of inputting a first potential to the first electrode and inputting a second potential different from the first potential to the second electrode, and a reverse potential driving step of applying a voltage to the electrophoretic element, the voltage having a polarity which is opposite to a polarity of the potential in the display driving step.Type: GrantFiled: October 27, 2010Date of Patent: December 17, 2013Assignee: Seiko Epson CorporationInventors: Eiji Miyasaka, Shigeaki Seki
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Publication number: 20120218502Abstract: A display device that has a display panel having a front substrate, an image forming unit, and a back substrate rendered together in layers, and a wiring board layered on the back surface of the back substrate. A plurality of input/output pins are formed on the front surface of the back substrate, and a plurality of connection pins that are electrically connected to the input/output pins by respective conductor members are formed on the back surface of the wiring board.Type: ApplicationFiled: May 9, 2012Publication date: August 30, 2012Applicant: Seiko Epson CorporationInventors: Shigeaki Seki, Kenichi Okuhara
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Patent number: 8194222Abstract: A display device that has a display panel having a front substrate, an image forming unit, and a back substrate rendered together in layers, and a wiring board layered on the back surface of the back substrate. A plurality of input/output pins are formed on the front surface of the back substrate, and a plurality of connection pins that are electrically connected to the input/output pins by respective conductor members are formed on the back surface of the wiring board.Type: GrantFiled: October 24, 2008Date of Patent: June 5, 2012Assignee: Seiko Epson CorporationInventors: Shigeaki Seki, Kenichi Okuhara
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Patent number: 8167481Abstract: A timepiece wheel train includes a rotating body with a shaft unit, a bearing unit that rotatably supports the shaft unit of the rotating body, and a lubricating oil in which powder from a diamond-like carbon film is dispersed disposed between the shaft unit and the bearing unit.Type: GrantFiled: April 2, 2010Date of Patent: May 1, 2012Assignee: Seiko Epson CorporationInventors: Masao Takeuchi, Masami Murai, Shigeaki Seki, Tomokazu Yoshida
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Publication number: 20110102480Abstract: Disclosed is a method for driving an electrophoretic display device including a first electrode, a second electrode facing the first electrode, and an electrophoretic element disposed between the first electrode and the second electrode. The method includes a display driving step of inputting a first potential to the first electrode and inputting a second potential different from the first potential to the second electrode, and a reverse potential driving step of applying a voltage to the electrophoretic element, the voltage having a polarity which is opposite to a polarity of the potential in the display driving step.Type: ApplicationFiled: October 27, 2010Publication date: May 5, 2011Applicant: Seiko Epson CorporationInventors: Eiji Miyasaka, Shigeaki Seki
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Publication number: 20100254230Abstract: A timepiece wheel train includes a rotating body with a shaft unit, a bearing unit that rotatably supports the shaft unit of the rotating body, and a lubricating oil in which powder from a diamond-like carbon film is dispersed disposed between the shaft unit and the bearing unit.Type: ApplicationFiled: April 2, 2010Publication date: October 7, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Masao Takeuchi, Masami Murai, Shigeaki Seki, Tomokazu Yoshida
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Patent number: 7671518Abstract: Piezoelectric vibrators provided with an electrode that includes a drive electrode and adjustment electrodes formed in advance on part of the electrode; the drive electrode and adjustment electrodes that are initially electrically connected to each other are electrically cutoff and insulated from each other by cutting conductive parts between the drive electrode and adjustment electrodes, or the mutually insulated drive electrode and adjustment electrodes are electrically connected using solder, a wire, or another electrically conductive member, whereby the characteristic frequencies are adjusted.Type: GrantFiled: February 9, 2006Date of Patent: March 2, 2010Assignee: Seiko Epson CorporationInventors: Akihiro Sawada, Shigeaki Seki, Susumu Kayamori
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Publication number: 20090122653Abstract: A display device that has a display panel having a front substrate, an image forming unit, and a back substrate rendered together in layers, and a wiring board layered on the back surface of the back substrate. A plurality of input/output pins are formed on the front surface of the back substrate, and a plurality of connection pins that are electrically connected to the input/output pins by respective conductor members are formed on the back surface of the wiring board.Type: ApplicationFiled: October 24, 2008Publication date: May 14, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Shigeaki Seki, Kenichi Okuhara
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Patent number: 7391273Abstract: The clock signal output device has a crystal oscillator for generating a reference clock signal and generating and outputting an output clock signal having a prescribed frequency on the basis of the reference clock signal. The device also has an atomic oscillator for generating a clock signal having higher precision than a crystal oscillator, an intermittent time management unit for intermittently driving the atomic oscillator, and a correction unit for receiving correction data for correcting the offset amount of the output clock signal on the basis of a clock signal each time the atomic oscillator is driven, and correcting the output clock signal on the basis of the correction data.Type: GrantFiled: February 24, 2006Date of Patent: June 24, 2008Assignee: Seiko Epson CorporationInventors: Shigeaki Seki, Katsutoyo Inoue
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Publication number: 20070242569Abstract: A wristwatch having a display unit with memory that retains the display state of a last preceding display update operation, and a solar cell for displaying operating power at least to the display unit with memory during the display update operation. The display unit with memory and the solar cell render a dial or a display panel.Type: ApplicationFiled: March 30, 2007Publication date: October 18, 2007Applicant: SEIKO EPSON CORPORATIONInventors: Katsutoyo Inoue, Shigeaki Seki
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Patent number: 7109638Abstract: A piezoelectric actuator A has an oscillator 10 that has a flat base layer 32 and piezoelectric elements 30, 31 layered on the base layer 32 and oscillates as a result of a drive signal applied to the piezoelectric elements 30, 31, and a rotor 100 driven by vibrations from the oscillator 10. The piezoelectric actuator A includes a fastening part 11 for securing the oscillator 10, and lead substrates 14A, 14B that are secured to the fastening part 11 for applying a drive signal to the piezoelectric elements from a drive circuit 500 for driving the piezoelectric elements 30, 31. The lead substrates 14A, 14B have connecting parts 17A–17C extending to the power supply electrodes 33A, 33C and a detection electrode 34.Type: GrantFiled: February 17, 2005Date of Patent: September 19, 2006Assignee: Seiko Epson CorporationInventors: Joji Kitahara, Shigeaki Seki
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Publication number: 20060202771Abstract: There is provided a clock signal output device that can improve the precision of a clock signal while avoiding an increase in the overall power consumption even if a high-precision oscillator with relatively high power consumption is used, as well as a control method thereof, an electronic apparatus, and a control method thereof. The clock signal output device has a crystal oscillator (41) for generating a reference clock signal (CL1) and generating and outputting an output clock signal (CL0) having a prescribed frequency on the basis of the reference clock signal (CL1).Type: ApplicationFiled: February 24, 2006Publication date: September 14, 2006Applicant: Seiko Epson CorporationInventors: Shigeaki Seki, Katsutoyo Inoue
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Publication number: 20060175929Abstract: To provide, via a simple method, a piezoelectric vibrator wherein nonuniformities in the adjusted amounts of the characteristic frequencies are small, and the characteristic frequencies can be adjusted with little decrease in the vibration characteristics, whereby individual differences pertaining to the characteristic frequency can be eliminated. In a vibrator 70, adjustment electrodes 72 are formed in advance on part of an electrode 60, and drive electrode 61 and adjustment electrodes 72 that have initially been made conductive relative to each other are electrically cut off and insulated from each other by cutting conductive parts 73, or the mutually insulated drive electrode 61 and adjustment electrodes 72 are made conductive (shorted) using solder, a wire, or another electrically conductive member, whereby the characteristic frequencies are adjusted simply and reliably.Type: ApplicationFiled: February 9, 2006Publication date: August 10, 2006Applicant: Seiko Epson CorporationInventors: Akihiro Sawada, Shigeaki Seki, Susumu Kayamori
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Publication number: 20050184621Abstract: A piezoelectric actuator A has an oscillator 10 that has a flat base layer 32 and piezoelectric elements 30, 31 layered on the base layer 32 and oscillates as a result of a drive signal applied to the piezoelectric elements 30, 31, and a rotor 100 driven by vibrations from the oscillator 10. The piezoelectric actuator A includes a fastening part 11 for securing the oscillator 10, and lead substrates 14A, 14B that are secured to the fastening part 11 for applying a drive signal to the piezoelectric elements from a drive circuit 500 for driving the piezoelectric elements 30, 31. The lead substrates 14A, 14B have connecting parts 17A-17C extending to the power supply electrodes 33A, 33C and a detection electrode 34.Type: ApplicationFiled: February 17, 2005Publication date: August 25, 2005Inventors: Joji Kitahara, Shigeaki Seki
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Patent number: 5563445Abstract: A semiconductor chip is positioned over the device hole of a circuit board which includes an insulating flexible substrate. The electrode bumps of the semiconductor chip are bonded to the lead portions of the conductive pattern, which protrude into the device hole by using the single-point bonding method. The circuit board includes superimposing areas of the substrate that overlie the semiconductor chip at the four corner areas of the device hole, as well as the superimposing area that divides the device hole into the four holes. Dummy bumps are provided on the areas of the semiconductor chip that overlap these superimposing areas. The dummy bumps are not to be bonded to the conductive pattern and are positioned between the circuit board and the semiconductor chip to maintain a specified distance between the two. Furthermore, a through-hole is provided in the superimposing area to allow air to escape when a molding agent is injected through the holes.Type: GrantFiled: March 13, 1995Date of Patent: October 8, 1996Assignee: Seiko Epson CorporationInventors: Yoshitaka Iijima, Shigeaki Seki