Patents by Inventor Tsukasa Funasaka
Tsukasa Funasaka 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: 8031274Abstract: A touch panel includes: a first touch panel substrate having a first surface and having a flexibility; a second touch panel substrate arranged a fixed distance away from the first touch panel substrate via spacers, having a second surface that faces the first surface; a position detecting section formed on the first surface, and detecting a position where the first touch panel substrate is being pressed based on changes in surface acoustic waves generated on the first surface; and a resin film formed on the second surface.Type: GrantFiled: January 24, 2007Date of Patent: October 4, 2011Assignee: Seiko Epson CorporationInventors: Shinji Sakurai, Satoshi Taguchi, Tsukasa Funasaka
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Publication number: 20100302660Abstract: An optical filter includes: a first substrate and a second substrate that are disposed to face each other; a first mirror and a first electrode that are disposed on the second substrate side of the first substrate; and a second mirror and a second electrode that are disposed on the first substrate side of the second substrate, wherein the first mirror and the second mirror are connected via a wire.Type: ApplicationFiled: May 26, 2010Publication date: December 2, 2010Applicant: Seiko Epson CorporationInventors: Nozomu HIROKUBO, Tsukasa FUNASAKA
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Publication number: 20100226029Abstract: An optical filter comprising: a first substrate; a second substrate facing the first substrate, the second substrate including a first surface and a second surface, a first height of the first surface being different from a second height of the second surface; a first mirror formed on the first surface of the second substrate; a second mirror formed on the second surface of the second substrate; a third mirror formed on the first substrate, the third mirror facing the first mirror; a fourth mirror formed on the first substrate, the fourth mirror facing the second mirror; a first electrode formed on the first substrate; and a second electrode formed on the second substrate, the second electrode facing the first electrode.Type: ApplicationFiled: February 23, 2010Publication date: September 9, 2010Applicant: Seiko Epson CorporationInventor: Tsukasa FUNASAKA
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Publication number: 20100148627Abstract: An ultrasonic transducer is configured to transmit or receive ultrasonic waves. The ultrasonic transducer includes a vibrating member and a piezoelectric member coupled to the vibrating member. The piezoelectric member includes a first piezoelectric part configured and arranged to be deformed by applied voltage to vibrate the vibrating member or configured and arranged to be deformed by vibration of the vibrating member to produce a potential difference, and a second piezoelectric part configured and arranged to be deformed by applied voltage to statically deflect the vibrating member.Type: ApplicationFiled: December 15, 2009Publication date: June 17, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Tsukasa FUNASAKA, Tomoaki NAKAMURA
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Publication number: 20100142067Abstract: An optical filter comprising a first substrate, a first mirror formed on the first substrate, a second substrate coupled to the first substrate, the second substrate including a concave portion, and a second mirror formed on the concave portion and facing the first mirror, wherein the first substrate includes a first portion located on the first mirror, a second portion located around the first portion, a third portion located around the second portion, and a fourth portion located around the third portion, wherein both a thickness of the second portion and a thickness of the fourth portion are equal to or smaller than a thickness of the first portion.Type: ApplicationFiled: December 1, 2009Publication date: June 10, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yuki HANAMURA, Takeo FUNAKAWA, Tsukasa FUNASAKA
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Patent number: 7659889Abstract: A touch panel device including: a substrate; a first sender element for sending surface acoustic wave, which is placed along a first direction on the substrate; a second sender element for sending surface acoustic wave, which is placed along a second direction, orthogonal to the first direction, on the substrate; a receiver element for receiving the surface acoustic wave from the second sender element, which is placed along the second direction on the substrate while facing the second sender element with an interval in between; and a reflector, which is placed on the substrate, for achieving the receiver element's reception of the surface acoustic wave from the first sender element by reflecting the surface acoustic wave from the first sender element, wherein a position of a contact body touching on a contact surface is detected by transmitting the surface acoustic wave that is sent from the sender element through the contact surface and receiving the surface acoustic wave on the receiver element.Type: GrantFiled: December 14, 2005Date of Patent: February 9, 2010Assignee: Seiko Epson CorporationInventor: Tsukasa Funasaka
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Patent number: 7593067Abstract: An electro-optical device includes: an electro-optical panel having a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates; a third substrate arranged on the second substrate; a fourth substrate having a flexibility and arranged on the third substrate via a spacer; a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; and a resin film provided on the fourth substrate and opposed to the third substrate.Type: GrantFiled: January 25, 2007Date of Patent: September 22, 2009Assignee: Seiko Epson CorporationInventors: Satoshi Taguchi, Shinji Sakurai, Tsukasa Funasaka
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Publication number: 20090178260Abstract: A vibrating piece manufacturing method includes: (a) preparing a supporting body having first and second surfaces, the first and second surfaces defining a thickness while being directed toward opposite directions, the supporting body including a base and a plurality of arms, the arms extending side-by-side in a direction orthogonal to a direction of the thickness from the base, a lower electrode film being disposed on the first surface of each of the arms, a piezoelectric film being disposed on the lower electrode films, at least one upper electrode film being disposed on the piezoelectric film, at least a part of the second surface of each of the arms being an exposed area; and (b) etching the exposed area of the second surface so as to reduce the thickness to reduce flexural rigidity of the arms with respect to the thickness direction.Type: ApplicationFiled: January 6, 2009Publication date: July 16, 2009Applicant: EPSON TOYOCOM CORPORATIONInventors: Takashi Yamazaki, Tsukasa Funasaka, Takeo Funakawa, Makoto Furuhata
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Patent number: 7406756Abstract: A method for manufacturing a piezoelectric resonator is provided including: forming a resonator element having a plate-like base and a plurality of arms extending laterally from the base on a substrate made of crystal; emitting laser light for irradiating one surface and the other surface of the arms with laser light and for removing a region irradiated with the laser light, so as to form a groove having a predetermined cross sectional shape perpendicular to the longitudinal direction of the groove; forming a driving electrode on the resonator element.Type: GrantFiled: October 21, 2004Date of Patent: August 5, 2008Assignee: Seiko Epson CorporationInventors: Kazushige Umetsu, Kazuto Yoshimura, Tsukasa Funasaka, Fumitaka Kitamura
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Patent number: 7253552Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.Type: GrantFiled: June 20, 2006Date of Patent: August 7, 2007Assignee: Seiko Epson CorporationInventors: Osamu Miyazawa, Yasuharu Hashimoto, Tsukasa Funasaka, Makoto Furuhata
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Publication number: 20070171212Abstract: A touch panel includes: a first touch panel substrate having a first surface and having a flexibility; a second touch panel substrate arranged a fixed distance away from the first touch panel substrate via spacers, having a second surface that faces the first surface; a position detecting section formed on the first surface, and detecting a position where the first touch panel substrate is being pressed based on changes in surface acoustic waves generated on the first surface; and a resin film formed on the second surface.Type: ApplicationFiled: January 24, 2007Publication date: July 26, 2007Inventors: Shinji Sakurai, Satoshi Taguchi, Tsukasa Funasaka
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Publication number: 20070171326Abstract: An electro-optical device includes: an electro-optical panel having a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates; a third substrate arranged on the second substrate; a fourth substrate having a flexibility and arranged on the third substrate via a spacer; a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; and a resin film provided on the fourth substrate and opposed to the third substrate.Type: ApplicationFiled: January 25, 2007Publication date: July 26, 2007Inventors: Satoshi Taguchi, Shinji Sakurai, Tsukasa Funasaka
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Publication number: 20070165009Abstract: A touch panel includes: a touch panel substrate having an input surface; a cover film arranged separately from the input surface, and facing to the input surface; spacers extending upright from the touch panel substrate toward the cover film; a transmitter causing surface acoustic waves to be propagated on the input surface; a receiver measuring the surface acoustic waves propagated on the input surface; a memory storing, as reference values, measurement values of the surface acoustic waves when the cover film is not being pressed; and a determination section detecting, as touch input positions, positions at which a difference between the measurement values of the surface acoustic waves when the touch panel is being used and the reference values is significant.Type: ApplicationFiled: January 17, 2007Publication date: July 19, 2007Inventors: Shinji Sakurai, Satoshi Taguchi, Tsukasa Funasaka
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Patent number: 7245193Abstract: A surface acoustic wave element 1 includes a substrate 2, an intermediate layer and a piezoelectric layer 4 laminated on the substrate 2, an IDT 5 disposed on the piezoelectric layer 4, a pair of reflectors 6 and 7 arranged on both sides of the IDT 5, and a protective layer 8 provided so as to cover the IDT 5 and the reflectors 6 and 7. The IDT 5, that is each of the electrode 5a and 5b, has a plurality of electrode fingers 51 juxtaposed with a prescribed spacing and the reflectors 6 and 7 have respectively a plurality of reflecting bodies 61 and 71. Further, the pitch Pr of the reflecting body of each reflector 6 and 7 is set to be smaller than the pitch Pt of the electrode finger of the IDT 5 and the ratio Pr/Pt is preferably set to be in the range of 0.7 to 0.9995. According to the surface acoustic wave element 1, the impedance characteristic and the insertion loss can be improved. Furthermore, electronic equipment having such surface acoustic wave element is provided.Type: GrantFiled: August 25, 2004Date of Patent: July 17, 2007Assignee: Seiko Epson CorporationInventor: Tsukasa Funasaka
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Publication number: 20060226737Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.Type: ApplicationFiled: June 20, 2006Publication date: October 12, 2006Applicant: SEIKO EPSON CORPORATIONInventors: Osamu Miyazawa, Yasuharu Hashimoto, Tsukasa Funasaka, Makoto Furuhata
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Patent number: 7078847Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.Type: GrantFiled: February 4, 2004Date of Patent: July 18, 2006Assignee: Seiko Epson CorporationInventors: Osamu Miyazawa, Yasuharu Hashimoto, Tsukasa Funasaka, Makoto Furuhata
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Publication number: 20060139341Abstract: A touch panel device including: a substrate; a first sender element for sending surface acoustic wave, which is placed along a first direction on the substrate; a second sender element for sending surface acoustic wave, which is placed along a second direction, orthogonal to the first direction, on the substrate; a receiver element for receiving the surface acoustic wave from the second sender element, which is placed along the second direction on the substrate while facing the second sender element with an interval in between; and a reflector, which is placed on the substrate, for achieving the receiver element's reception of the surface acoustic wave from the first sender element by reflecting the surface acoustic wave from the first sender element, wherein a position of a contact body touching on a contact surface is detected by transmitting the surface acoustic wave that is sent from the sender element through the contact surface and receiving the surface acoustic wave on the receiver element.Type: ApplicationFiled: December 14, 2005Publication date: June 29, 2006Inventor: Tsukasa Funasaka
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Publication number: 20050122188Abstract: A surface acoustic wave element is provided including, as a substrate, a quartz-rotator Y plate whose Euler angle is expressed as (0, ?, ?), and an IDT and reflectors provided on this substrate. The IDT is formed of Al as its main ingredient, and arranged so that an angle ?, which the propagation direction of a surface acoustic wave and the X-axis of the quartz-rotator Y plate make, is 90±10°, and a normalized film-thickness H/? of the IDT, and the cut angle ? satisfy the following Relation A: ? min???? max (where, ?=129 through 144°); ? min=857.06(H/?)2+23.656(H/?)+123.68; and ? max=2502.4(H/?)2+73.1(H/?)+121.7.Type: ApplicationFiled: October 28, 2004Publication date: June 9, 2005Inventors: Tsukasa Funasaka, Masahiro Oshio
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Publication number: 20050115038Abstract: A method for manufacturing a piezoelectric resonator is provided including: forming a resonator element having a plate-like base and a plurality of arms extending laterally from the base on a substrate made of crystal; emitting laser light for irradiating one surface and the other surface of the arms with laser light and for removing a region irradiated with the laser light, so as to form a groove having a predetermined cross sectional shape perpendicular to the longitudinal direction of the groove; forming a driving electrode on the resonator element.Type: ApplicationFiled: October 21, 2004Publication date: June 2, 2005Inventors: Kazushige Umetsu, Kazuto Yoshimura, Tsukasa Funasaka, Fumitaka Kitamura
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Patent number: 6885615Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.Type: GrantFiled: September 8, 1999Date of Patent: April 26, 2005Assignee: Seiko Epson CorporationInventors: Osamu Miyazawa, Yasuharu Hashimoto, Tsukasa Funasaka, Makoto Furuhata