Patents by Inventor Xiaoyu Mi
Xiaoyu Mi 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: 8209829Abstract: A method of fabricating an electronic device includes selectively forming a glass layer on a ceramic substrate by printing, baking the glass layer, and forming a capacitor on the glass layer, the capacitor including metal electrodes and a dielectric layer interposed between the metal electrodes.Type: GrantFiled: February 27, 2009Date of Patent: July 3, 2012Assignees: Taiyo Yuden Co., Ltd., Fujitsu LimitedInventors: Takeo Takahashi, Xiaoyu Mi, Satoshi Ueda
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Publication number: 20110273246Abstract: A variable distributed constant line includes a substrate, a signal line that is provided on the substrate, and includes a first line portion and a second line portion facing each other, a movable electrode that is provided above the substrate, and straddles both the first line portion and the second line portion in a manner to face the first line portion and the second line portion, and a driving electrode that is provided on the substrate in a manner to face the movable electrode, attracts the movable electrode by an action of a voltage applied between the driving electrode and the movable electrode, and changes a distance between the signal line and the movable electrode.Type: ApplicationFiled: November 3, 2010Publication date: November 10, 2011Applicant: FUJITSU LIMITEDInventors: Xiaoyu Mi, Osamu Toyoda, Satoshi Ueda
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Publication number: 20110241430Abstract: The present invention discloses a control method for the system gain of a UPS, which includes the steps of: S1: detecting a PFC unit so as to determine whether to start an LLC, and if so, then going to step S2; otherwise, going to step S8; S2: starting the LLC; S3: detecting the mains supply so as to determine whether to switch from the mains supply to a battery, and if so, then going to step S4; otherwise, going to step S5; S4: performing a frequency-fixed adjustment on the LLC with an operating frequency larger than a resonating frequency by a preset magnitude while clearing an integral quantity within a first preset time T1; and performing a frequency-fixed adjustment on the LLC with an operating frequency equal to the resonating frequency while clearing the integral quantity between the first preset time T1 and a second preset time T2, and going to step S8; S5: determining whether the LLC-in-series resonant converter has an overload, and if so, then going to step S6; otherwise, going to step S7; S6: perfoType: ApplicationFiled: April 5, 2011Publication date: October 6, 2011Applicant: LIEBERT CORPORATIONInventors: Fang Liu, Zhongjun Wei, Xiaoyu MI, Xunbin Wu
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Patent number: 8031459Abstract: A micro-device includes a movable part, a frame and a connecting part. The movable part has a main portion, a first capacitor electrode and a first driver electrode. The capacitor electrode and the driver electrode have electrode teeth extending from the main portion. The frame includes second capacitor and driver electrodes, where the second capacitor electrode has electrode teeth extending toward the first capacitor electrode, and the second driver electrode has electrode teeth extending toward the first driver electrode. The connecting part connects the movable part to the frame. The first and second capacitor electrodes have their electrode teeth overlapped in their initial position. The movable part is rotatable for varying the extent of the overlapping between the first and second driver electrodes.Type: GrantFiled: February 26, 2008Date of Patent: October 4, 2011Assignee: Fujitsu LimitedInventors: Xiaoyu Mi, Takeaki Shimanouchi, Masahiko Imai, Satoshi Ueda
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Publication number: 20110222204Abstract: A MEMS device includes a substrate, a fixed electrode that is provided on the substrate and allows a signal to pass therethrough, a movable electrode that is provided above the substrate in a manner to face the fixed electrode and allows a signal to pass therethrough, a driving line that is provided inside the substrate and used to apply a driving voltage to displace the movable electrode, and a resistance that is provided in a first via hole formed inside the substrate and used to cutoff a signal. The fixed electrode or the movable electrode is connected to the driving line through the first resistance.Type: ApplicationFiled: March 3, 2011Publication date: September 15, 2011Applicant: FUJITSU LIMITEDInventors: Xiaoyu MI, Osamu Toyoda, Satoshi Ueda
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Patent number: 7986507Abstract: A variable capacitor is provided which is appropriate for suppressing fluctuation in driving voltage characteristic and for achieving a larger variation ratio of static capacitance. The variable capacitor includes a fixed electrode and a movable electrode. The fixed electrode includes a first opposing face, while the movable electrode includes a second opposing face that faces the first opposing face. The movable electrode further includes a curved portion that protrudes toward the fixed electrode. The variable capacitor also includes a dielectric pattern provided on the first opposing face.Type: GrantFiled: January 24, 2008Date of Patent: July 26, 2011Assignee: Fujitsu LimitedInventors: Takeaki Shimanouchi, Masahiko Imai, Yu Yonezawa, Xiaoyu Mi, Satoshi Ueda
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Publication number: 20110171806Abstract: An integrated electronic device includes a substrate, passive components, pads for external connection, and three-dimensional wiring. The passive components includes a multi-stage coil inductor provided on the substrate. The multi-stage coil inductor has a plurality of coils disposed in several layers. Mutually adjacent coil wires are spaced-apart from each other. The three-dimensional wiring includes a first wiring portion which extends on the substrate, a second wiring portion which extends off the substrate but along the substrate, and a third wiring portion connecting with the first wiring portion and the second wiring portion.Type: ApplicationFiled: March 21, 2011Publication date: July 14, 2011Applicants: FUJITSU LIMITED, TAIYO YUDEN CO., LTD.Inventors: Xiaoyu Mi, Yoshihiro Mizuno, Tsuyoshi Matsumoto, Hisao Okuda, Satoshi Ueda, Takeo Takahashi
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Patent number: 7961448Abstract: A drive control method for a micro machine device is provided. The micro machine device is made up of first and second electrodes opposed to each other and a dielectric layer disposed between them. The drive control method includes the steps of applying a control voltage between the first and the second electrodes so that an electrostatic force is exerted on the first and the second electrodes for displacing the first or the second electrode, and switching polarity of the control voltage at a predetermined period or a shorter period.Type: GrantFiled: January 23, 2008Date of Patent: June 14, 2011Assignee: Fujitsu LimitedInventors: Naoyuki Mishima, Yu Yonezawa, Takeaki Shimanouchi, Xiaoyu Mi, Takeshi Takano, Nobuhisa Aoki, Yuuta Nakaya
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Patent number: 7948056Abstract: An integrated electronic device includes a substrate, passive components, pads for external connection, and three-dimensional wiring. The passive components includes a multi-stage coil inductor provided on the substrate. The multi-stage coil inductor has a plurality of coils disposed in several layers. Mutually adjacent coil wires are spaced-apart from each other. The three-dimensional wiring includes a first wiring portion which extends on the substrate, a second wiring portion which extends off the substrate but along the substrate, and a third wiring portion connecting with the first wiring portion and the second wiring portion.Type: GrantFiled: August 25, 2006Date of Patent: May 24, 2011Assignees: Fujitsu Limited, Taiyo Yuden Co., Ltd.Inventors: Xiaoyu Mi, Yoshihiro Mizuno, Tsuyoshi Matsumoto, Hisao Okuda, Satoshi Ueda, Takeo Takahashi
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Patent number: 7903386Abstract: In a method for drive controlling a micro machine device including two electrodes opposing each other and a dielectric layer sandwiched therebetween, a control voltage in a rectangular waveform in which positive and negative polarities are alternately inverted is applied between the two electrodes. A current passing through the micro machine device due to the application of the control voltage are detected with respect to positive and negative sides, and parameters related to a capacitance of the micro machine device are acquired with respect to the positive and negative sides on the basis of the detected current. The control voltage is controlled so that the parameters acquired with respect to the positive and negative sides accord with each other. Thus, variation of the capacitance between the positive side and the negative side can be suppressed in switching drive of a variable capacitance device.Type: GrantFiled: February 28, 2008Date of Patent: March 8, 2011Assignee: Fujitsu LimitedInventors: Yu Yonezawa, Takeaki Shimanouchi, Naoyuki Mishima, Satoshi Ueda, Xiaoyu Mi, Masahiko Imai
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Patent number: 7855458Abstract: An electronic component includes a substrate, and a capacitor unit on the substrate. The capacitor unit has a laminate structure including a first electrode layer provided on the substrate, a second electrode layer opposed to the first electrode layer, and a dielectric layer disposed between the first and the second electrode layers. The first electrode layer has a multilayer structure including an adhesion metal layer joined to the dielectric layer. The adhesion metal layer is provided with an oxide coating on a side of the dielectric layer.Type: GrantFiled: October 25, 2006Date of Patent: December 21, 2010Assignee: Fujitsu LimitedInventors: Tsuyoshi Matsumoto, Yoshihiro Mizuno, Xiaoyu Mi, Hisao Okuda, Satoshi Ueda
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Patent number: 7833430Abstract: A method of making a microstructure with thin wall portions (T1-T3) includes a step of performing a first etching process to a material substrate having a laminate structure including a first conductive layer (11) and a second conductive layer (12) having a thickness of the thin wall portions (T1-T3), where the etching is performed from the side of the first conductive layer (11) thereby forming in the second conductive layer (12) pre thin wall portions (T1?-T3?) which has a pair of side surfaces apart from each other in an in-plane direction of the second conductive layer (12) and contact the first conductive layer (11). The method also includes a step of performing a second etching process from the side of the first conductive layer (11) for removing part of the first conductive layer (11) contacting the pre thin wall portions (T1?-T3?) to form the thin wall portions.Type: GrantFiled: October 25, 2005Date of Patent: November 16, 2010Assignee: Fujitsu LimitedInventors: Xiaoyu Mi, Norinao Kouma, Osamu Tsuboi, Masafumi Iwaki, Hisao Okuda, Hiromitsu Soneda, Satoshi Ueda, Ippei Sawaki
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Patent number: 7808030Abstract: The electronic component includes a base material, a capacitor unit, and a wiring portion. The capacitor unit has a stacked structure including a first electrode portion provided on the base material, a second electrode portion including a first surface opposing the first electrode portion and a second surface opposite to the first surface, and a dielectric portion interposed between the electrode portions. The wiring portion includes a via portion having a surface on the base material side, and joined to the second surface of the second electrode portion via the surface on the base material side. The surface of the via portion on the base material side includes an extending portion extending outward of the periphery of the second surface of the second electrode portion.Type: GrantFiled: November 13, 2006Date of Patent: October 5, 2010Assignee: Fujitsu LimitedInventors: Yoshihiro Mizuno, Xiaoyu Mi, Tsuyoshi Matsumoto, Hisao Okuda, Satoshi Ueda
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Publication number: 20100237965Abstract: A filter includes a first resonance line and a second resonance line which extend from an input point where a high frequency signal is input, wherein an electrical propagation length L1 of the first resonance line is set at L1=[?1/4]×n and an electrical propagation length L2 of the second resonance line is set at L2=[?2/4]×n, wherein ?1 and ?2 are wavelengths of specified high frequency signals and n is positive odd number.Type: ApplicationFiled: February 19, 2010Publication date: September 23, 2010Applicant: FUJITSU LIMITEDInventors: Xiaoyu Mi, Osamu Toyoda, Satoshi Ueda
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Publication number: 20100164652Abstract: A filter includes a substrate; a signal line formed on the substrate and including an input terminal and an output terminal at either end of the signal line; and a first pair of resonant lines connected between the signal line and a ground portion, wherein the first pair of resonant lines are connected to the signal line at the same point.Type: ApplicationFiled: December 7, 2009Publication date: July 1, 2010Applicant: FUJITSU LIMITEDInventors: Xiaoyu Mi, Satoshi Ueda, Osamu Toyoda
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Publication number: 20090297785Abstract: There is provided a method for manufacturing an electronic device including: printing a conductive pattern on a first surface of a first green sheet having a multilayer structure, the conductive pattern being electrically connected to an internal interconnection formed in the first green sheet; superposing a second green sheet on the first surface of the first green sheet, the second green sheet having an opening located in an area corresponding to the conductive pattern; pressurizing the first green sheet and the second green sheet superposed thereon in directions in which the second green sheet is superposed on the first green sheet; burning the first green sheet and the second green sheet superimposed thereon to thus form a multilayer ceramic substrate; and mounting an electronic element on a second surface of the multilayer ceramic substrate opposite to the first surface, the electronic element being electrically connected to the internal interconnection.Type: ApplicationFiled: May 29, 2009Publication date: December 3, 2009Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Satoshi UEDA, Xiaoyu MI, Takeo TAKAHASHI
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Patent number: 7602262Abstract: An elastic wave device formed by bonding at least two surface acoustic wave devices by filling a resin therebetween is disclosed. Each of surface acoustic wave (SAW) devices includes a substrate; a functioning portion configured on the substrate; a recess that forms a space portion necessary for operation of the functioning portion, and a package that covers the surface of the substrate, and side faces of the package of the at least two SAW devices, corresponding to a portion bonded by filling of the resin between at least two SAW devices, includes the at least one cutout, and a first resin covers a portion of each of the side faces, the back faces, and the front faces of the substrate of the at least two SAW devices, and the first resin is filled with in the at least one cutout on the side faces of the package.Type: GrantFiled: April 5, 2007Date of Patent: October 13, 2009Assignees: Fujitsu Media Devices Limited, Fujitsu LimitedInventors: Kazunori Inoue, Takashi Matsuda, Shogo Inoue, Xiaoyu Mi, Jyouji Kimura
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Publication number: 20090237894Abstract: An electronic device includes a substrate, a coil that has a spiral shape and is provided on the substrate, and a conductive pattern that is provided inside of the coil, has optical reflectivity higher than that of a surface of the coil, and is divided into pieces.Type: ApplicationFiled: September 26, 2008Publication date: September 24, 2009Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Satoshi UEDA, Takeo TAKAHASHI, Tsuyoshi MATSUMOTO, Tsuyoshi YOKOYAMA, Xiaoyu Mi
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Publication number: 20090219670Abstract: A method of fabricating an electronic device includes selectively forming a glass layer on a ceramic substrate by printing, baking the glass layer, and forming a capacitor on the glass layer, the capacitor including metal electrodes and a dielectric layer interposed between the metal electrodes.Type: ApplicationFiled: February 27, 2009Publication date: September 3, 2009Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Takeo TAKAHASHI, Xiaoyu Mi, Satoshi Ueda
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Publication number: 20090213561Abstract: An electronic device includes an insulative substrate, a spiral inductor formed by an interconnection layer provided on a first surface of the insulative layer, a first chip that is mounted on a second surface of the insulative layer opposite to the first surface and is electrically connected to a passive circuit including the spiral inductor, the first chip having an electrically conductive substrate, and a first protrusion that is provided on one of the first and second surface of the insulative substrate and protrudes therefrom, the first protrusion being electrically connected to one of the passive circuit and the first chip to an external circuit.Type: ApplicationFiled: February 24, 2009Publication date: August 27, 2009Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Xiaoyu Mi, Takeo Takahashi, Satoshi Ueda, Tatsuya Kakehashi, Hidehiko Ishiguro, Shinya Yamamoto