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    Piezoelectric transformer
    1.
    发明公开
    Piezoelectric transformer 审中-公开
    压电变压器

    公开(公告)号：EP1267426A3

    公开(公告)日：2005-06-15

    申请号：EP02254136.1

    申请日：2002-06-13

    Applicant: Matsushita Electric Industrial Co., Ltd.

    Inventor： Nakatsuka, Hiroshi ,  Takeda, Katsu ,  Adachi, Yusuke ,  Moritoki, Katsunori ,  Fukushima, Hiroshi

    IPC: H01L41/107 ,  H05B41/282

    CPC classification number: H05B41/2822 ,  H01L41/107

    Abstract: A low loss, small scale piezoelectric transformer, suited for a cold cathode tube load, and having a high effective coupling factor, is provided using a piezoelectric plate having a single polarization direction. Controlling the dimensions of the third electrode portion 15a constituting the high impedance portion makes it possible easily to adjust the capacitance of the electrostatic capacitor formed between the first electrode portion 12 and the third electrode portion in accordance with the load. Also, the second electrode portion 13 and the fourth electrode portion 15b constituting the low impedance portion are substantially equal in area and the third electrode portion and the fourth electrode portion are formed in one piece, so that energy propagation efficiency can be increased. Consequently, the effective coupling factor resulting from the electrode structure and the vibration mode can be kept high even if the capacitance is changed freely, and thus high element efficiency and a small amount of generated heat can be maintained and stress can be decreased.

    Filter using piezoelectric resonator
    2.
    发明公开
    Filter using piezoelectric resonator 审中-公开
    过滤器mit piezoelektrischem谐振器

    公开(公告)号：EP1533897A2

    公开(公告)日：2005-05-25

    申请号：EP04026155.4

    申请日：2004-11-04

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Yamakawa, Takehiko ,  Yamaguchi, Hiroshi ,  Nakatsuka, Hiroshi ,  Nakamura, Hiroyuki ,  Onishi, Keiji ,  Ishizaki, Toshio

    IPC: H03H9/64 ,  H03H9/58

    CPC classification number: H03H9/605 ,  H03H9/6433

    Abstract: A series piezoelectric resonator (11) is connected in series between an input terminal (15a) and an output terminal (15b). A first electrode of a first parallel piezoelectric resonator (12a) is connected to a connection point between the input terminal (15a) and the series piezoelectric resonator (11), and a second electrode of the first parallel piezoelectric resonator (12a) is connected to a first terminal of a first inductor (13a). A first electrode of a a second parallel piezoelectric resonator (12b) is connected to a connection point between the series piezoelectric resonator (11) and the output terminal (15b), and a second electrode of the second parallel piezoelectric resonator (12b) is connected to a first terminal of a second inductor (13b). Second terminals of the inductors (13a,13b) are grounded. An additional piezoelectric resonator (14) is connected between the second electrode of the first parallel piezoelectric resonator (12a) and the second electrode of the second parallel piezoelectric resonator (12b).

    Abstract translation: 串联压电谐振器（11）串联连接在输入端子（15a）和输出端子（15b）之间。 第一并联压电谐振器（12a）的第一电极连接到输入端子（15a）和串联压电谐振器（11）之间的连接点，第一并联压电谐振器（12a）的第二电极连接到 第一电感器（13a）的第一端子。 第二并联压电谐振器（12b）的第一电极连接到串联压电谐振器（11）和输出端子（15b）之间的连接点，并且第二并联压电谐振器（12b）的第二电极连接到 第二电感器（13b）的第一端子。 电感器（13a，13b）的第二端接地。 附加的压电谐振器（14）连接在第一并联压电谐振器（12a）的第二电极和第二并联压电谐振器（12b）的第二电极之间。

    Drive device and drive method for a cold cathode fluorescent lamp
    3.
    发明公开
    Drive device and drive method for a cold cathode fluorescent lamp 有权
    装置和方法用于控制冷阴极低压放电灯

    公开(公告)号：EP1220580A3

    公开(公告)日：2004-08-25

    申请号：EP01130174.4

    申请日：2001-12-19

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakatsuka, Hiroshi ,  Yamaguchi, Takeshi ,  Takeda, Katsu ,  Moritoki, Katsunori

    IPC: H05B41/282 ,  H05B41/285

    CPC classification number: H05B41/2822 ,  H05B41/2855 ,  H05B41/392

    Abstract: The present invention relates to a drive device for one or more series-connected cold cathode fluorescent lamps having an electrical terminal at each end. The drive device has a piezoelectric transformer for converting by means of the piezoelectric effect a primary ac input applied to primary electrodes to a secondary ac output, which is removed from secondary electrodes; a drive arrangement for applying the primary ac input to the primary electrodes; and a brightness control circuit for controlling brightness. The brightness control circuit detects the phase difference between the secondary ac output and the primary ac input. When the detected phase difference is greater than a specified phase difference, the drive arrangement reduces the power of the primary ac input applied to the primary electrodes. If the detected phase difference is less than the specified phase difference, the drive arrangement increases the power of the primary ac input applied to the primary electrodes.

    Piezoelectric resonator, production method thereof, filter, duplexer, and communication device
    4.
    发明公开
    Piezoelectric resonator, production method thereof, filter, duplexer, and communication device 审中-公开
    Piezoelektrischer谐振器，压电滤波器，双工器，Kommunikationsgerätund Herstellungsverfahren des piezoelektrischen谐振器

    公开(公告)号：EP1530291A2

    公开(公告)日：2005-05-11

    申请号：EP04026193.5

    申请日：2004-11-04

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Yamaguchi, Hiroshi ,  Nakatsuka, Hiroshi ,  Onishi, Keiji ,  Yamakawa, Takehiko ,  Nakamura, Hiroyuki

    IPC: H03H9/17

    CPC classification number: H03H9/173 ,  H03H3/04 ,  H03H2003/021

    Abstract: The present invention relates to a piezoelectric resonator including: a substrate; a lower electrode (103) provided on or above the substrate; a piezoelectric member (101) provided on or above the lower electrode; an upper electrode (102) provided on or above the piezoelectric member; and a cavity (104) provided below a vibration member consisting of the lower electrode, the piezoelectric member, and the upper electrode. In the case where a resonance frequency of vibration with a thickness of the vibration member being a half of a wavelength is taken as fr1, an average of ultrasonic velocity in a material forming the cavity is taken as Vc2, and a value determined based on the resonance frequency fr1 and the average of ultrasonic velocity Vc2 is λc (=Vc2/fr1), a depth t2 of the cavity is set as shown below, (2n-1) × λc 4 - λc 8 ≦ t 2 ≦ (2n-1) × λc 4 + λc 8 , where n is an arbitrary natural number.

    Abstract translation: 压电谐振器技术领域本发明涉及一种压电谐振器，包括：基板; 设置在所述基板上或上方的下电极（103） 设置在所述下电极上或上方的压电体（101） 设置在压电元件上或上方的上电极（102） 以及设置在由下电极，压电部件和上电极构成的振动部件的下方的空腔（104）。 在将振动部件的厚度为波长的一半的振动的共振频率作为fr1的情况下，将形成空腔的材料的超声波速度的平均值作为Vc2，将基于 谐振频率fr1和超声速度Vc2的平均值为λc（= Vc2 / fr1），空腔的深度t2如下所示设置：（2n-1）×λc DIVIDED 4-λc DIVIDED 8

    Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezolectric resonator
    7.
    发明公开
    Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezolectric resonator 审中-公开
    使用的压电谐振器是Herstellungsvefahren，以及滤波器，双工器和通信装置，所述压电谐振器

    公开(公告)号：EP1530292A2

    公开(公告)日：2005-05-11

    申请号：EP04026163.8

    申请日：2004-11-04

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakatsuka, Hiroshi ,  Onishi, Keiji ,  Nakamura, Hiroyuki ,  Yamakawa, Takehiko ,  Yamaguchi, Hiroshi

    IPC: H03H9/56

    CPC classification number: H03H3/04 ,  H03H9/0211 ,  H03H9/173 ,  Y10T29/42

    Abstract: A piezoeletric resonator includes: a substrate (105); a lower electrode (103) formed on or above the substrate; a piezoeletric body (101) formed on or above the lower electrode; an upper electrode (102) formed on or above the piezoeletric body; and a cavity (104) under a vibrating portion formed by the lower electrode, the piezoeletric body, and the upper electrode. Where a resonant frequency of vibration with a thickness of the vibrating portion being a half of a wavelength is taken as fr, an average of ultrasonic velocity in a material forming the cavity is taken as Vc, and a value determined based on the resonant frequency fr and the average of ultrasonic velocity Vc is taken as λc (=Vc/fr), a depth of the cavity is set so as to be equal to or larger than n×λc/2-λc/8 and equal to or smaller than n×λc/2+λc/8.

    Abstract translation: 甲piezoeletric谐振器包括：基板（105）; 形成在所述基体上的下部电极（103）; 一个piezoeletric体（101）上形成的或在下部电极的上方; 到上或piezoeletric成形体上述上部电极（102）; 并且由下部电极，所述piezoeletric体，和上部电极而形成的振动部下方的空腔（104）。 其中振动的厚度振动部是一个波长的一半的谐振频率被取为FR，平均声速在形成腔的材料设为Vc和确定性的值矿洞基于谐振频率fr 和超声波速度Vc的平均值作为拉姆达C（= VC / FR），空腔的深度被设定为比为nx拉姆达C / 2的λC / 8等于或大于和等于或小于 比为nx拉姆达C / 2 +拉姆达C /第八

    Piezoelectric device, antenna duplexer, and method of manufacturing piezolelectric resonators used therefor
    8.
    发明公开
    Piezoelectric device, antenna duplexer, and method of manufacturing piezolelectric resonators used therefor 审中-公开
    压电谐振器的压电装置，天线双工器及其制造方法

    公开(公告)号：EP1530290A2

    公开(公告)日：2005-05-11

    申请号：EP04026165.3

    申请日：2004-11-04

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakamura, Hiroyuki ,  Onishi, Keiji ,  Nakatsuka, Hiroshi ,  Yamaguchi, Hiroshi ,  Yamakawa, Takehiko

    IPC: H03H3/02 ,  H03H9/58

    CPC classification number: H03H9/605 ,  H03H3/02 ,  H03H9/02118 ,  H03H9/587

    Abstract: A piezoelectric device (100) includes first and second piezoeletric resonators (110, 120). The first piezoeletric resonator (110) has a structure in which a cavity (111), a lower electrode (112), apiezoeletric layer (113), and an upper electrode (114) are formed on a substrate (101). The second piezoeletric resonator (120) has a structure in which a cavity (121), a lower electrode (122), a piezoeletric layer (123), and an upper electrode (124) are formed on the substrate (101). A feature of the above-structure piezoelectric device (100) is that the piezoeletric layers (113, 123) have the same film thickness and the depth (t1) of the cavity (111) of the first piezoeletric resonator (110) is different from the depth (t2) of the cavity (121) of the second piezoeletric resonator (120).

    Abstract translation: 压电装置（100）包括第一和第二谐振器piezoeletric（110，120）。 所述第一谐振器piezoeletric（110）具有在其中的腔体（111），在上电极（114）的下部电极（112）apiezoeletric层（113），和底物上的（101）形成的结构。 所述第二谐振器piezoeletric（120）具有在其中的腔体（121），下部电极（122），一个piezoeletric层（123），并且在上部电极（124）在基板（101）形成的结构。 上述结构的压电装置（100）的特征是DASS死piezoeletric层（113，123）具有相同的膜厚度和所述第一piezoeletric谐振器（110）的腔（111）的深度（T1）是从不同的 所述第二谐振器piezoeletric（120）的腔（121）的深度（T2）。

    Piezoelectric resonator, filter, and duplexer
    10.
    发明公开
    Piezoelectric resonator, filter, and duplexer 有权
    压电谐振器，滤波器和双工器

    公开(公告)号：EP1517444A3

    公开(公告)日：2005-08-31

    申请号：EP04021697.0

    申请日：2004-09-13

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakatsuka, Hiroshi ,  Onishi, Keiji ,  Nakamura, Hiroyuki ,  Yamakawa, Takehiko

    IPC: H03H9/17

    CPC classification number: H03H9/588 ,  H03H9/02094 ,  H03H9/02102 ,  H03H9/0211 ,  H03H9/173 ,  H03H9/174 ,  H03H9/175 ,  H03H9/585 ,  H03H9/589

    Abstract: A piezoelectric resonator of the present invention is structured such that on a substrate (5) having a cavity (4) formed therein, a lower electrode (3), a piezoelectric body (1), a spurious component control layer (16) , and an upper electrode (2) are formed in this order frombottomup. The spurious component control layer (16) is a layer for controlling a spurious frequency, and composed of, for example, a metallic material, a dielectric material, or a piezoelectric material. By additionally providing the spurious component control layer (16), it is made possible to cause variation of the spurious frequency due to unwanted variation to become greater than variation in resonance frequency of the main resonance of the piezoelectric resonator. Thus, it is possible to realize a piezoelectric resonator having an admittance frequency response where no spurious component occurs between resonance frequency fr and antiresonance frequency fa.

    Abstract translation: 本发明的压电谐振器是这样构成的，即在其中形成有空腔（4）的衬底（5）上形成下电极（3），压电体（1），寄生成分控制层（16）和 从下方起依次形成上部电极（2）。 寄生成分控制层（16）是用于控制寄生频率的层，并且由例如金属材料，电介质材料或压电材料构成。 通过附加地提供寄生成分控制层（16），可以使由不希望的变化引起的寄生频率的变化变得大于压电谐振器的主谐振的谐振频率的变化。 因此，可以实现具有导纳频率响应的压电谐振器，其中谐振频率fr和反谐振频率fa之间不产生寄生分量。

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