公开(公告)号：US20090179581A1

公开(公告)日：2009-07-16

申请号：US12350481

申请日：2009-01-08

申请人： Osamu SENGOKU ,  Takashi KINOSHITA ,  Tatsuhisa SHIMURA

发明人： Osamu SENGOKU ,  Takashi KINOSHITA ,  Tatsuhisa SHIMURA

IPC分类号： H05B41/26

CPC分类号： H05B41/2822

摘要： A backlight assembly prevents abnormal discharge of a device using a high voltage to drive a discharge tube such as CCFL. An inverter circuit includes an inverter transformer supplying an AC high voltage to a plurality of discharge tubes, and a plurality of balance transformers. First terminals of primary coils of the balance transformers are connected to the discharge tubes, and second terminals of the primary coils are connected to a ground. Secondary coils of the balance transformers are connected in series to form a loop. A resistor has a first terminal connected to the loop and a second terminal connected to the ground. Accordingly, the backlight assembly may detect a high-voltage abnormal discharge such as a corona discharge, an arc discharge or the like.

摘要翻译： 背光组件防止使用高电压的装置的异常放电以驱动诸如CCFL的放电管。 逆变器电路包括向多个放电管提供交流高电压的逆变器变压器和多个平衡变压器。 平衡变压器的初级线圈的第一端子连接到放电管，并且初级线圈的第二端子连接到地。 平衡变压器的二次线圈串联连接形成回路。 电阻器具有连接到环路的第一端子和连接到地的第二端子。 因此，背光组件可以检测诸如电晕放电，电弧放电等的高电压异常放电。

公开(公告)号：US20070120502A1

公开(公告)日：2007-05-31

申请号：US11560645

申请日：2006-11-16

申请人： Tatsuhisa SHIMURA ,  Takashi KINOSHITA ,  Osamu SENGOKU

发明人： Tatsuhisa SHIMURA ,  Takashi KINOSHITA ,  Osamu SENGOKU

IPC分类号： H05B41/24

CPC分类号： H05B41/2822

摘要： An inverter circuit, a backlight assembly and a liquid crystal display include first and second electrodes and a balance circuit. The first and second electrodes supply a voltage of opposite polarities, respectively, among an even number of cold cathode fluorescent lamps (CCFLs) disposed in one direction. The first and second electrodes supply the voltage of opposite polarities to even-numbered CCFLs and odd-numbered CCFLs, respectively. The balance circuit controls currents flowing through the CCFLs. The CCFLs are halved into a first group higher in temperature and a second group lower in temperature than the first group. The balance circuit includes primary coils directly connected between at least one CCFL of the first group and at least one CCFL of the second group and secondary coils corresponding to the primary coils that are connected to each other to form a loop.

摘要翻译： 逆变器电路，背光组件和液晶显示器包括第一和第二电极和平衡电路。 第一和第二电极分别在一个方向上设置的偶数冷阴极荧光灯（CCFL）中提供相反极性的电压。 第一和第二电极分别向偶数CCFL和奇数CCFL提供相反极性的电压。 平衡电路控制流过CCFL的电流。 CCFL的温度降低到第一组，第二组的温度低于第一组。 平衡电路包括直接连接在第一组的至少一个CCFL和第二组的至少一个CCFL之间的初级线圈和对应于彼此连接以形成环路的初级线圈的次级线圈。

公开(公告)号：US20090261755A1

公开(公告)日：2009-10-22

申请号：US12262396

申请日：2008-10-31

申请人： Min-Soo CHOI ,  Osamu SENGOKU ,  Tatsuhisa SHIMURA

发明人： Min-Soo CHOI ,  Osamu SENGOKU ,  Tatsuhisa SHIMURA

IPC分类号： H05B37/02

CPC分类号： H05B41/282 ,  H05B41/2855 ,  Y02B20/183

摘要： An inverter circuit for a backlight device includes an inverter transformer which supplies a high AC voltage to a plurality of discharge tubes, a filter circuit connected to an output terminal of the inverter transformer, and an abnormal discharge detection circuit. The filter circuit passes a current signal having a high frequency component of the high AC voltage to the abnormal discharge detection circuit, and the abnormal discharge detection circuit detects an abnormal discharge current based on the current signal.

摘要翻译： 用于背光装置的逆变器电路包括向多个放电管提供高AC电压的逆变器变压器，连接到逆变器变压器的输出端子的滤波器电路和异常放电检测电路。 滤波器电路将具有高交流电压的高频分量的电流信号传送到异常放电检测电路，异常放电检测电路根据电流信号检测异常放电电流。

公开(公告)号：US20080061709A1

公开(公告)日：2008-03-13

申请号：US11851743

申请日：2007-09-07

申请人： Tatsuhisa SHIMURA ,  Osamu SENGOKU

发明人： Tatsuhisa SHIMURA ,  Osamu SENGOKU

IPC分类号： H05B41/24 ,  G01R31/06

CPC分类号： H05B41/2822

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080062105A1

公开(公告)日：2008-03-13

申请号：US11853631

申请日：2007-09-11

申请人： Song-Yi HAN ,  Tatsuhisa SHIMURA ,  Osamu SENGOKU

发明人： Song-Yi HAN ,  Tatsuhisa SHIMURA ,  Osamu SENGOKU

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： H05B41/3927

摘要： A brightness adjusting device includes a multiplication circuit, which multiplies a vertical signal by a predetermined multiplication ratio to output a multiplication signal, a differential circuit that distinguishes between different multiplication signals, a serrated wave generator that charges/discharges a condenser according to a signal output from the differential circuit and generates a serrated wave having constant amplitude independently of a frequency of the multiplication signal, a brightness adjusting voltage generator that generates a reference voltage to determine a pulse duty, and a comparator that outputs a pulse signal by comparing a voltage of the serrated wave with the brightness adjusting voltage. The brightness adjusting voltage generator includes a circuit that outputs a variable voltage, and the multiplication circuit includes a circuit having a variable multiplication ratio.

摘要翻译： 亮度调节装置包括乘法电路，该乘法电路将垂直信号乘以预定乘法比率以输出乘法信号，区分不同乘法信号的差分电路，根据信号输出对冷凝器进行充放电的锯齿波发生器 从所述差分电路产生与所述乘法信号的频率无关的具有恒定幅度的锯齿波，生成参考电压以确定脉冲占空比的亮度调节电压发生器，以及比较器，通过比较所述脉冲占空比的电压 锯齿波具有亮度调节电压。 亮度调节电压发生器包括输出可变电压的电路，并且乘法电路包括具有可变倍率的电路。

公开(公告)号：US20080061701A1

公开(公告)日：2008-03-13

申请号：US11853627

申请日：2007-09-11

申请人： Yun-Gun LEE ,  Jin-Won JANG ,  Tatsuhisa SHIMURA ,  Osamu SENGOKU

发明人： Yun-Gun LEE ,  Jin-Won JANG ,  Tatsuhisa SHIMURA ,  Osamu SENGOKU

IPC分类号： H01J29/98 ,  H05B37/02

CPC分类号： H05B41/282 ,  Y02B20/183

摘要： A backlight module that uniformly maintains the brightness of a light emitting device, in which the number of transformers is reduced, and that is applicable for use with large cold cathode ray tubes includes cold cathode ray tubes arranged in parallel, transformers having first secondary-side terminals connected to first electrodes of the cold cathode ray tubes and whose primary side terminals are connected in series to constitute a closed loop, a first inverter circuit that applies a first sine wave voltage to second terminals on the secondary sides of the transformers, and a second inverter circuit that applies a second sine wave voltage having opposite phase to second electrodes of the cold cathode ray tubes.

摘要翻译： 能够均匀地保持变压器的数量减少并且适用于大型冷阴极射线管的发光装置的亮度的背光模块包括平行排列的冷阴极射线管，具有第一次级侧的变压器 连接到冷阴极射线管的第一电极并且其初级侧端子串联连接以构成闭环的端子，向变压器的次级侧的第二端施加第一正弦波电压的第一逆变器电路，以及 第二逆变器电路，其施加具有与冷阴极射线管的第二电极相反的相位的第二正弦波电压。