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    Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer
    1.
    发明授权
    Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer 失效
    具有压电变压器保护电路的冷阴极管照明电路

    公开(公告)号：US6118221A

    公开(公告)日：2000-09-12

    申请号：US173306

    申请日：1998-10-15

    申请人： Katsunori Kumasaka ,  Hiroyuki Sato

    发明人： Katsunori Kumasaka ,  Hiroyuki Sato

    IPC分类号： H05B41/285 ,  H05B41/392 ,  H05B37/02

    CPC分类号： H05B41/3925 ,  H05B41/2855 ,  H05B41/3927

    摘要： To provide a cold-cathode tube lighting circuit which quickly and smoothly carries out lighting of a cold-cathode tube and prevents damage of a piezoelectric transformer as an inverter transform in the lighting circuit, the lighting circuit is provided with a protection circuit for detecting a primary current of the piezoelectric transformer. The protection circuit stops operation of an oscillator for driving the piezoelectric transformer when the primary current is excessive. The protection circuit may be provided to detect excess of a secondary voltage of the piezoelectric transformer. When the cold-cathode tube is used as a backlight for a liquid crystal display driven by the use of a scanning frequency, a dimmer circuit is used for producing a dimmer signal with a dimmer frequency and a controlled duty ratio given by a manual selector for controlling start and stop of the oscillator according to a desired brightness of the backlight. The dimmer frequency is obtained from frequency division of the scanning frequency. The controlled duty ratio is also modified corresponding to the divided frequency.

    摘要翻译： 为了提供一种冷阴极管照明电路，其能够快速平稳地执行冷阴极管的照明，并且防止在照明电路中作为逆变器变换的压电变压器的损坏，点亮电路设置有用于检测 压电变压器的初级电流。 当初级电流过大时，保护电路停止用于驱动压电变压器的振荡器的操作。 可以提供保护电路以检测压电变压器的二次电压的过剩。 当使用冷阴极管作为通过使用扫描频率驱动的液晶显示器的背光源时，使用调光电路来产生具有调光频率和由手动选择器给出的受控占空比的调光信号 根据所需的背光亮度来控制振荡器的启动和停止。 调光器频率由扫描频率的分频获得。 受控占空比也根据分频率进行修改。

    Piezoelectric transformer and power supply including the same
    2.
    发明授权
    Piezoelectric transformer and power supply including the same 失效
    压电变压器和电源包括相同

    公开(公告)号：US5949179A

    公开(公告)日：1999-09-07

    申请号：US136496

    申请日：1998-08-19

    申请人： Katsunori Kumasaka ,  Hiroyuki Sato

    发明人： Katsunori Kumasaka ,  Hiroyuki Sato

    IPC分类号： H01L41/053 ,  H01L41/107 ,  H01L41/08

    CPC分类号： H01L41/107 ,  H01L41/0475 ,  H01L41/053

    摘要： A power supply including a piezoelectric transformer mounted and electrically connected to a defined board region of a printed circuit board having circuit components for forming the power supply together with the piezoelectric transformer. The transformer has FPC for connecting the transformer and the printed circuit board and is bound together with the board region by a wrapping sheet. In an embodiment, the board region is defined by a slit through which the wrapping sheet is wrapped. In another embodiment, the FPC has lugs standing up thereon to connect with the electrodes of the transformer. In another embodiment, a hard plate supports and covers the FPC and the transformer on the printed circuit board. In the other embodiment, the FPC is formed into a cover case and covers and holds the transformer element when is fixed to the printed circuit board.

    摘要翻译： 一种电源，包括安装并电连接到具有用于与压电变压器形成电源的电路部件的印刷电路板的限定板区域的压电变压器。 变压器具有用于连接变压器和印刷电路板的FPC，并且通过包装片与板区域结合在一起。 在一个实施例中，板区域由包裹片包裹的狭缝限定。 在另一个实施例中，FPC具有竖立在其上的凸耳以与变压器的电极连接。 在另一个实施例中，硬板支撑并覆盖印刷电路板上的FPC和变压器。 在另一实施例中，FPC被固定到印刷电路板上时形成为盖壳并且覆盖并保持该变压器元件。

    Piezoelectric transformer
    4.
    发明授权
    Piezoelectric transformer 有权
    压电变压器

    公开(公告)号：US06960871B1

    公开(公告)日：2005-11-01

    申请号：US09701420

    申请日：1999-05-31

    申请人： Katsunori Kumasaka ,  Masao Yamaguchi

    发明人： Katsunori Kumasaka ,  Masao Yamaguchi

    IPC分类号： H01L41/107 ,  H02M7/48 ,  H01L41/08

    CPC分类号： H01L41/107

    摘要： A piezoelectric transformer (101) comprises a layered structure (15) formed by alternately stacking a plurality of internal electrodes (13) and a plurality of piezo-electric ceramics layers (103) in thickness direction, first electrodes (21, 23) formed on side surfaces of said layered structure (15) and connected to said internal electrodes (13), at least one pair of second electrodes (27, 29, 31, 33, 35, 37) formed on the side surfaces in areas different from those of the first electrodes (21, 23) and having a same potential, and a circuit board for driving the piezoelectric transformer. The piezoelectric transformer (101) is mounted on the circuit board. Each of the at least one pair of the second electrodes (27, 29, 31, 33, 35, 37) opposite to each other is electrically connected to the circuit board.

    摘要翻译： 压电变压器（101）包括通过在厚度方向上交替堆叠多个内部电极（13）和多个压电陶瓷层（103）而形成的层状结构（15），形成在第一电极 所述层状结构（15）的侧面与所述内部电极（13）连接，形成在与所述内部电极（13）不同的区域中的至少一对第二电极（27,29,31,33,35,37） 第一电极（21,23）并且具有相同的电位，以及用于驱动压电变压器的电路板。 压电变压器（101）安装在电路板上。 至少一对彼此相对的第二电极（27,29,31,33,35,37）中的每一个电连接到电路板。

    Mounting structure of piezoelectric transformer and method of mounting piezoelectric transformer
    5.
    发明授权
    Mounting structure of piezoelectric transformer and method of mounting piezoelectric transformer 失效
    压电变压器的安装结构及安装压电变压器的方法

    公开(公告)号：US06515405B1

    公开(公告)日：2003-02-04

    申请号：US09463803

    申请日：2000-01-29

    申请人： Katsunori Kumasaka ,  Koichi Saito

    发明人： Katsunori Kumasaka ,  Koichi Saito

    IPC分类号： H01L4108

    CPC分类号： H01L41/107 ,  H01L41/053 ,  H05K1/0271 ,  H05K3/303

    摘要： In a structure in which a piezoelectric transformer element (11) is mounted on a circuit board (27) equipped with a circuit component for driving the piezoelectric transformer element (11), at least one of a fixing member (33, 35) and a supporting member (37, 39, 41) made of an elastic material having flexibility is interposed between the piezoelectric transformer element (11) and the circuit board (27) so as to cover vibration node portions (29, 31) of the piezoelectric transformer element (11) and at least a part of the remaining portion except the vibration node portions (29, 31). Thus, the piezoelectric transformer element (11) is fixed to the circuit board (27).

    摘要翻译： 在将压电变压器元件（11）安装在配备有用于驱动压电变压器元件（11）的电路部件的电路板（27）上的结构中，至少一个固定部件（33,35）和 在压电变压器元件（11）和电路板（27）之间插入由具有柔性的弹性材料制成的支撑构件（37,39,41），以便覆盖压电变压器元件的振动节点部分（29,31） （11）和除振动节点部分（29,31）之外的剩余部分的至少一部分。 因此，压电变压器元件（11）固定到电路板（27）。

    Piezoelectric transformer
    7.
    发明授权
    Piezoelectric transformer 失效
    压电变压器

    公开(公告)号：US5998909A

    公开(公告)日：1999-12-07

    申请号：US11177

    申请日：1998-02-22

    申请人： Katsunori Kumasaka ,  Masafumi Katsuno ,  Koichi Okamoto ,  Yoshiaki Fuda

    发明人： Katsunori Kumasaka ,  Masafumi Katsuno ,  Koichi Okamoto ,  Yoshiaki Fuda

    IPC分类号： H01L41/053 ,  H01L41/107 ,  H01L41/08

    CPC分类号： H01L41/107 ,  H01L41/053

    摘要： A piezoelectric transformer has input and output terminal electrodes (12c, 12d, 13c, 13d) exposed on a bottom surface thereof. The terminal electrodes are mechanically and electrically connected to connection portions (15a-15d) of a flexible printed circuit (18) for connecting with an external circuit. The transformer is held between a base element (21b, 22) and a cover (21a, 23, 25) coupled to each other. The base element may be a circuit board on which the transformer should be mounted.

    摘要翻译： PCT No.PCT / JP97 / 01638 Sec。 371日期1998年2月22日 102（e）日期1998年2月22日PCT提交1997年5月15日PCT公布。 公开号WO97 / 43791 日本1997年11月20日压电变压器具有在其底面上露出的输入输出端子电极（12c，12d，13c，13d）。 端子电极机械地和电连接到用于与外部电路连接的柔性印刷电路（18）的连接部分（15a-15d）。 变压器保持在基座元件（21b，22）和彼此联接的盖子（21a，23,25）之间。 基座元件可以是应该安装变压器的电路板。

    Piezoelectric transformer wrapped by wrapping member of soft insulating sheet material
    8.
    发明授权
    Piezoelectric transformer wrapped by wrapping member of soft insulating sheet material 失效
    压电变压器由软绝缘片材包裹件包裹

    公开(公告)号：US5847490A

    公开(公告)日：1998-12-08

    申请号：US879127

    申请日：1997-06-19

    申请人： Katsunori Kumasaka ,  Masafumi Katsuno ,  Koichi Okamoto ,  Yoshiaki Fuda

    发明人： Katsunori Kumasaka ,  Masafumi Katsuno ,  Koichi Okamoto ,  Yoshiaki Fuda

    IPC分类号： H01L41/04 ,  H01L41/107 ,  H01L41/08

    CPC分类号： H01L41/107 ,  H01L41/053 ,  H01L41/0533

    摘要： A piezoelectric transformer element is wrapped together with primary lead members and secondary lead members by a thin soft insulating sheet, with the primary and secondary lead members being exposed outside the wrapping sheet, so that the transformer element is small in size, and easy in handling, and mounting operation on a circuit board. The primary and secondary lead members can be formed of a flexible flat cable. In an electric power supply device using the piezoelectric transformer element, the transformer element, and the flexible flat cable are wrapped by the wrapping sheet together with a portion of a circuit board on which the transformer element and other circuit elements are mounted.

    摘要翻译： 压电变压器元件通过薄的软绝缘片与初级引线构件和次级引线构件一起包裹，其中初级和次级引线构件暴露在包装片的外部，使得变压器元件的尺寸小，并且容易处理 ，以及在电路板上的安装操作。 初级和次级引线构件可以由柔性扁平电缆形成。 在使用压电变压器元件的电力供应装置中，变压器元件和柔性扁平电缆与其上安装有变压器元件和其他电路元件的电路板的一部分一起被包裹片包裹。

    Voltage converter for use with a piezoelectric transformer
    9.
    发明授权
    Voltage converter for use with a piezoelectric transformer 失效
    用于压电变压器的电压转换器

    公开(公告)号：US5777425A

    公开(公告)日：1998-07-07

    申请号：US707144

    申请日：1996-09-03

    申请人： Yoshihiro Ino ,  Tetsuo Yoshida ,  Yoshiaki Fuda ,  Naoki Wako ,  Katsunori Kumasaka ,  Hutoshi Shiotani

    发明人： Yoshihiro Ino ,  Tetsuo Yoshida ,  Yoshiaki Fuda ,  Naoki Wako ,  Katsunori Kumasaka ,  Hutoshi Shiotani

    IPC分类号： H01L41/107 ,  H02M3/28 ,  H01L41/08

    CPC分类号： H02M3/28 ,  H01L41/107

    摘要： A piezoelectric transformer comprising a rectangular plate of a piezoelectric material which is polarized in a thickness direction in a first half section of the plate in a longitudinal direction but is polarized in a width direction in a second half section of the remaining half section. A pair of primary electrodes are coated on the upper and the lower surfaces of the first half section and a pair of secondary electrodes are coated on the opposite side surfaces of the second half section, in an alternative structure, the plate is polarized in the thickness direction in opposite end sections of the plate having a size one third of length of the plate and polarized in width direction at the remaining middle section of plate between opposite end sections. The pair of primary electrodes formed on upper and lower surfaces of opposite end sections of plate and pair of secondary electrodes formed on opposite side surfaces of middle section. The pair of secondary electrodes may be deposited on upper or lower surfaces adjacent opposite side edges. In a voltage converter using the piezoelectric transformer, a pulse generator generates two voltage pulse signals having frequency equal to resonance frequency of transformer but being reverse to each other in phase, which signals are applied to primary electrodes, respectively to produce high voltage AC output across secondary electrodes isolated from primary electrodes.

    摘要翻译： 一种压电变压器，包括压电材料的矩形板，所述矩形板在所述板的纵向方向上的所述板的第一半部分中沿厚度方向偏振，但在所述剩余的半部的后半部分中沿宽度方向极化。 一对主电极涂覆在第一半部分的上表面和下表面上，并且一对次电极涂覆在第二半部分的相对侧表面上，在替代结构中，该板以厚度 板的相对端部的方向具有板的长度的三分之一并且在相对端部之间的板的剩余中间部分处在宽度方向上极化。 一对初级电极形成在中间部分的相对侧表面上形成的板和一对次级电极的相对端部的上表面和下表面上。 一对辅助电极可以沉积在邻近相对侧边缘的上表面或下表面上。 在使用压电变压器的电压转换器中，脉冲发生器产生两个电压脉冲信号，其频率等于变压器的谐振频率，但是相位相反，这些信号分别施加到主电极，以产生跨越高压交流输出 从主电极隔离的次级电极。