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    • 11. 发明授权
    • Inverter circuit and backlight assembly having the same
    • 逆变器电路和背光组件具有相同的功能
    • US07477023B2
    • 2009-01-13
    • US11851743
    • 2007-09-07
    • Tatsuhisa ShimuraOsamu Sengoku
    • Tatsuhisa ShimuraOsamu Sengoku
    • H05B41/16
    • H05B41/2822
    • An inverter circuit includes a power supply which outputs an alternating current voltage, an inverter transformer having one primary coil connected to an output terminal of the power supply and pairs of secondary coils which supply an alternating current high voltage, induced by the one primary coil, to pairs of discharge tubes and a plurality of balance transformers having primary coils serially connected between respective pairs of the pairs of secondary coils of the inverter transformer, and having secondary coils corresponding to the primary coils of the plurality of balance transformers, wherein the secondary coils of the plurality of balance transformers are serially connected to form a loop.
    • 逆变器电路包括输出交流电压的电源,具有连接到电源的输出端的一个初级线圈的逆变器变压器和由一个初级线圈感应的提供交流高压的次级线圈对, 成对放电管和多个平衡变压器,其具有串联连接在逆变器变压器的各对次级线圈对之间的初级线圈,并且具有对应于多个平衡变压器的初级线圈的次级线圈,其中次级线圈 多个平衡变压器串联连接形成回路。
    • 12. 发明授权
    • Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly
    • 逆变电路,背光组件和带背光组件的液晶显示器
    • US07402957B2
    • 2008-07-22
    • US11521884
    • 2006-09-15
    • Tatsuhisa ShimuraTakashi KinoshitaOsamu Sengoku
    • Tatsuhisa ShimuraTakashi KinoshitaOsamu Sengoku
    • H05B37/00
    • H05B41/2822
    • In an inverter circuit, inverter transformers supply AC voltage to discharge tubes. The inverter transformers are arranged such that the AC voltage at a respective first terminal of each secondary coil has an opposite polarity with respect to a corresponding second terminal of each secondary coil. Balance transformers have primary coils inserted in series between a reference terminal of the secondary coils of the inverter transformers and ground. The secondary coils of the balance transformers are connected in series to form a loop. One node of the loop is grounded and a voltage detection node is located on the loop. At least one secondary coil of the secondary coils of the balance transformers is interposed between the grounded node of the loop and the voltage detection node. Thus, an abnormal state or condition, such as an open circuit or a short circuit may be detected.
    • 在逆变电路中,逆变变压器为交流电压提供放电管。 逆变器变压器被布置成使得每个次级线圈的相应的第一端子处的AC电压相对于每个次级线圈的对应的第二端子具有相反的极性。 平衡变压器具有串联插入在逆变器变压器的次级线圈的参考端和地之间的初级线圈。 平衡变压器的次级线圈串联连接形成一个回路。 回路的一个节点接地,电压检测节点位于回路上。 平衡变压器的次级线圈的至少一个次级线圈插入在环路的接地节点和电压检测节点之间。 因此,可以检测到诸如开路或短路的异常状态或状况。
    • 16. 发明申请
    • LAMP DRIVING CIRCUIT HAVING LOW VOLTAGE CONTROL, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY USING THE SAME
    • 具有低电压控制的灯驱动电路,背光单元和使用其的液晶显示器
    • US20110122165A1
    • 2011-05-26
    • US12817993
    • 2010-06-17
    • Osamu Sengoku
    • Osamu Sengoku
    • G09G5/10H05B41/36
    • G09G3/342G09G2310/024H05B41/282
    • A lamp driving circuit is provided for controlling individual block luminances provided by corresponding locally dimmed blocks of a backlight unit of an LCD system where the backlight unit employs high voltage discharge lamps that each need to have an AC excitation signal of at least predetermined minimum high voltage level developed there across in order to generate light. The lamp driving circuit includes a plurality of isolation transformers and corresponding low voltage switch circuits. Each isolation transformer has primary windings and a secondary winding. The secondary winding is interposed between a high voltage AC power source and a corresponding one or more lamps. The equivalent circuit impedance of the secondary winding determines what voltage will develop across its respective lamps. The low voltage switch circuits are operative to alter the equivalent circuit impedances of their respective primary windings, which impedance changes are then reflected by mutual inductance coupling into the secondary windings. Thus control circuits operating at relatively low voltages can be used to control the ON/OFF states of the lamps.
    • 提供一种灯驱动电路,用于控制由LCD系统的背光单元的相应局部调暗块提供的各个块亮度,其中背光单元采用高压放电灯,每个需要具有至少预定的最小高电压的AC激励信号 为了产生光,开发了这个级别。 灯驱动电路包括多个隔离变压器和相应的低压开关电路。 每个隔离变压器都有初级绕组和次级绕组。 次级绕组插入在高压AC电源和相应的一个或多个灯之间。 次级绕组的等效电路阻抗决定了在其各自的灯上会产生什么电压。 低压开关电路可操作以改变它们各自的初级绕组的等效电路阻抗,该阻抗变化然后通过互感耦合反射到次级绕组中。 因此,可以使用在较低电压下操作的控制电路来控制灯的ON / OFF状态。