公开(公告)号：US07443111B2

公开(公告)日：2008-10-28

申请号：US11812554

申请日：2007-06-20

申请人： Yu Jin Jang ,  Byoung Own Min ,  Sang Cheol Shin ,  Jung Chul Gong

发明人： Yu Jin Jang ,  Byoung Own Min ,  Sang Cheol Shin ,  Jung Chul Gong

IPC分类号： H05B37/02 ,  G09G3/38

CPC分类号： H05B41/2855

摘要： A liquid crystal display backlight inverter including a first error amplifying unit receiving and comparing a first detection voltage corresponding to a current flowing through a lamp with a first preset reference voltage and outputting a first error voltage corresponding to an error therebetween; a second error amplifying unit receiving and comparing a second detection voltage corresponding to a voltage applied to the lamp with a second preset reference voltage and outputting a second error voltage corresponding to an error therebetween; a feedback selector selecting one of the outputs of the first and second error amplifying unit according to an error between the second detection voltage and a third preset reference voltage; and a lamp control pulse generator generating a pulse signal having a duty controlled according to one of the first error voltage and second error voltage.

摘要翻译： 一种液晶显示器背光逆变器，包括：第一误差放大单元，接收和比较与流过灯的电流相对应的第一检测电压与第一预设参考电压，并输出与其间的误差对应的第一误差电压; 第二误差放大单元，接收和比较与施加到所述灯的电压相对应的第二检测电压与第二预设参考电压，并输出与其之间的误差对应的第二误差电压; 反馈选择器，根据第二检测电压和第三预置参考电压之间的误差来选择第一和第二误差放大单元的输出之一; 以及灯控制脉冲发生器，其产生具有根据第一误差电压和第二误差电压之一控制的占空比的脉冲信号。

公开(公告)号：US06954364B2

公开(公告)日：2005-10-11

申请号：US10631868

申请日：2003-08-01

申请人： Byoung Own Min

发明人： Byoung Own Min

IPC分类号： H02M7/5387 ,  H05B41/285 ,  H02H7/122

CPC分类号： H05B41/2855 ,  H02M7/53871 ,  H05B41/2851 ,  Y02B20/185

摘要： A backlight inverter for an LCD panel which is capable of detecting a fault in a transformer device or an open-lamp condition and performing a control operation to stop its operation upon detecting the fault in the transformer device or the open-lamp condition. The inverter supplies a PWM signal through a switch in normal operation. The inverter also detects a voltage corresponding to current flowing through each lamp in a lamp device and determines from the detected voltage whether the open-lamp condition has occurred. The inverter further detects a voltage at a midpoint of secondary windings of the transformer device and determines from the detected voltage whether the fault exists in the transformer device. In the event of the open-lamp condition or the fault in the transformer device, the inverter turns off the switch.

摘要翻译： 一种用于LCD面板的背光逆变器，其能够检测变压器装置中的故障或开灯状态，并且在检测到变压器装置中的故障或开灯状态时执行控制操作以停止其操作。 逆变器在正常工作状态下通过开关提供PWM信号。 逆变器还检测与灯装置中流过每个灯的电流相对应的电压，并根据检测到的电压确定是否发生了开灯状态。 逆变器进一步检测变压器装置次级绕组中点处的电压，并根据检测到的电压确定变压器装置中是否存在故障。 在开灯状态或变压器设备故障的情况下，变频器关闭开关。

公开(公告)号：US06445143B1

公开(公告)日：2002-09-03

申请号：US09855130

申请日：2001-05-14

申请人： Byoung Own Min

发明人： Byoung Own Min

IPC分类号： H05B4136

CPC分类号： H05B41/3921 ,  G09G3/3406 ,  G09G2320/064 ,  H05B41/2825

摘要： An inverter for LCD backlight operates an analog dimming control, a PWM dimming control or a complex dimming control by a control signal set by a manufacturer, and in case of the complex dimming control, realizes an original circuit operated by a controlling method distinguished from the conventional controlling method to enhance responsive characteristics when shifting a dimming mode.

摘要翻译： 用于LCD背光的逆变器通过制造商设置的控制信号来操作模拟调光控制，PWM调光控制或复调光控制，并且在复杂调光控制的情况下，实现通过与 传统的控制方法，用于在移动调光模式时增强响应特性。