-
1.发明授权Inverter circuit, backlight device and liquid crystal display having the same 有权逆变器电路，背光装置和具有相同的液晶显示器公开(公告)号：US08030858B2
公开(公告)日：2011-10-04
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
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。
-
2.发明授权Inverter circuit, backlight assembly, liquid crystal display having the same, and method thereof 有权逆变器电路，背光组件，具有相同的液晶显示器及其方法公开(公告)号：US07492106B2
公开(公告)日：2009-02-17
申请号：US11520913
申请日：2006-09-14
IPC分类号： H05B37/00
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：US20080079440A1
公开(公告)日：2008-04-03
申请号：US11864616
申请日：2007-09-28
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
CPC分类号： H05B41/2822 , H05B41/2855
摘要： An inverter circuit includes plural pairs of third coils, in which adjacent third coils are serially connected to each other so as to offset AC voltage generated from the paired third coils, one end of the paired third coils being connected to ground. Input terminals of plural diodes are connected to one end of the paired third coils so as to generate the voltage detection value by detecting voltage generated from the paired third coils. A fault detector compares the voltage detection value generated from the diodes with a predetermined threshold value to detect a fault and generates the comparison result.
摘要翻译： 逆变器电路包括多对第三线圈，其中相邻的第三线圈彼此串联连接以便偏移从成对的第三线圈产生的AC电压，所述成对的第三线圈的一端连接到地。 多个二极管的输入端子连接到成对的第三线圈的一端，以便通过检测从成对的第三线圈产生的电压来产生电压检测值。 故障检测器将从二极管产生的电压检测值与预定阈值进行比较，以检测故障并产生比较结果。
-
4.发明申请Inverter circuit, backlight assembly, liquid crystal display having the same, and method thereof 有权逆变器电路，背光组件，具有相同的液晶显示器及其方法公开(公告)号：US20070108918A1
公开(公告)日：2007-05-17
申请号：US11520913
申请日：2006-09-14
IPC分类号： H05B41/24
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：US08139019B2
公开(公告)日：2012-03-20
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
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：US07746337B2
公开(公告)日：2010-06-29
申请号：US11450770
申请日：2006-06-09
IPC分类号： G09G5/00
CPC分类号： H02M7/538 , H02M1/08 , H03K17/691 , H05B41/2828
摘要： An inverter circuit includes a first driving transformer, a second driving transformer, a power voltage circuit, a high-side FET connected to a secondary winding of the first driving transformer, a low-side FET connected to a secondary winding of the second driving transformer and an inverter transformer connected to a driving node between the high-side FET and the low-side FET. Thus, a direct current path does not exist between a gate of the high-side FET and the driving node, so that a gate voltage of the high-side FET is biased more to a negative polarity.
摘要翻译： 逆变器电路包括第一驱动变压器，第二驱动变压器，电源电压电路，连接到第一驱动变压器的次级绕组的高侧FET，连接到第二驱动变压器的次级绕组的低侧FET 以及连接到高侧FET和低侧FET之间的驱动节点的逆变器变压器。 因此，在高侧FET的栅极和驱动节点之间不存在直流路径，使得高侧FET的栅极电压被更多地偏置为负极性。
-
公开(公告)号：US07531968B2
公开(公告)日：2009-05-12
申请号：US11501415
申请日：2006-08-09
IPC分类号： H05B41/24
CPC分类号： H05B41/282 , Y02B20/183
摘要： An inverter circuit includes an inverter transformer to supply AC high voltages of opposite phases, and a plurality of balance transformers. The inverter transformer supplies AC high voltages of same phases to every n number of CCFLs, and the CCFLs are connected in series to primary windings of the balance transformers at every two CCFLs. Also, secondary windings of the balance transformers are connected in series to form a closed loop. Thus, an inverter circuit may realized for a large-sized backlight without increasing a number of the balance transformers.
摘要翻译： 逆变器电路包括用于提供相反相位的交流高电压的逆变器变压器和多个平衡变压器。 逆变器变压器为每n个CCFL提供相同相位的交流高电压，并且CCFL每隔两个CCFL串联连接到天平变压器的初级绕组。 而且，平衡变压器的次级绕组串联连接以形成闭环。 因此，在不增加多个平衡变压器的情况下，可以实现用于大尺寸背光的逆变器电路。
-
8.发明授权公开(公告)号：US07479739B2
公开(公告)日：2009-01-20
申请号：US11560645
申请日：2006-11-16
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。
-
9.发明申请Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly 失效逆变电路，背光组件和带背光组件的液晶显示器公开(公告)号：US20070120499A1
公开(公告)日：2007-05-31
申请号：US11521884
申请日：2006-09-15
IPC分类号： H05B41/24
CPC分类号： H05B41/2822
摘要： 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.
摘要翻译： 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。
-
公开(公告)号：US07723996B2
公开(公告)日：2010-05-25
申请号：US11864616
申请日：2007-09-28
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： G01R31/02
CPC分类号： H05B41/2822 , H05B41/2855
摘要： An inverter circuit includes plural pairs of third coils, in which adjacent third coils are serially connected to each other so as to offset AC voltage generated from the paired third coils, one end of the paired third coils being connected to ground. Input terminals of plural diodes are connected to one end of the paired third coils so as to generate the voltage detection value by detecting voltage generated from the paired third coils. A fault detector compares the voltage detection value generated from the diodes with a predetermined threshold value to detect a fault and generates the comparison result.
摘要翻译： 逆变器电路包括多对第三线圈，其中相邻的第三线圈彼此串联连接以便偏移从成对的第三线圈产生的AC电压，所述成对的第三线圈的一端连接到地。 多个二极管的输入端子连接到成对的第三线圈的一端，以便通过检测从成对的第三线圈产生的电压来产生电压检测值。 故障检测器将从二极管产生的电压检测值与预定阈值进行比较，以检测故障并产生比较结果。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.02 秒)
