公开(公告)号：US20060017408A1

公开(公告)日：2006-01-26

申请号：US11168067

申请日：2005-06-28

申请人： Kuan-Hong Hsieh ,  Shin-Hong Chung ,  Wei-De Bao

发明人： Kuan-Hong Hsieh ,  Shin-Hong Chung ,  Wei-De Bao

IPC分类号： H05B37/00

CPC分类号： H05B41/2822 ,  H05B41/382

摘要： A CCFL (cold-cathode fluorescent lamp) driving system for multiple CCFL loads includes a transformer, a CCFL circuit, and a controlling circuit coupled between the transformer and the CCFL circuit. The CCFL circuit includes multiple CCFL loads. The transformer includes a primary winding and a secondary winding, with the primary winding coupled to a voltage source and the secondary winding coupled to the CCFL loads. The controlling circuit includes a part for generating a predetermined voltage signal to power the CCFL loads during a warm-up stage and another part for generating a modulation signal. With such circuit arrangement, each of the multiple CCFL loads is powered from an off state to an operationally-on state.

摘要翻译： 用于多个CCFL负载的CCFL（冷阴极荧光灯）驱动系统包括变压器，CCFL电路和耦合在变压器和CCFL电路之间的控制电路。 CCFL电路包括多个CCFL负载。 变压器包括初级绕组和次级绕组，初级绕组耦合到电压源，次级绕组耦合到CCFL负载。 控制电路包括用于产生预定电压信号以在预热阶段为CCFL负载供电的部分以及用于产生调制信号的另一部分。 利用这种电路布置，多个CCFL负载中的每一个从断开状态供电到操作开启状态。

公开(公告)号：US07208884B2

公开(公告)日：2007-04-24

申请号：US11163471

申请日：2005-10-20

申请人： Wei-De Bao ,  Kuan-Hong Hsieh

发明人： Wei-De Bao ,  Kuan-Hong Hsieh

IPC分类号： H05B39/00 ,  H05B41/36

CPC分类号： H05B41/2855

摘要： A discharge lamp lighting circuit includes an open protection circuit. The discharge lamp lighting circuit includes an open protection circuit and an over-voltage detecting circuit. The open protection circuit detects whether any of the discharge lamps are unlit, and sends a voltage control signal to a control circuit if one of the discharge lamps is not lit, whereby the control circuit sends a pulse signal to a buck converter according to the voltage control signal, and the buck converter generates and outputs a DC voltage according to the pulse signal. If the DC voltage from the buck converter reaches a predetermined voltage, the over-voltage detecting circuit conducts and sends a voltage control signal to the control circuit, and the control circuit ceases operating according to the voltage control signal. Consequently, damage to the other normal discharge lamps is prevented.

摘要翻译： 放电灯点亮电路包括开路保护电路。 放电灯点亮电路包括开路保护电路和过电压检测电路。 开路保护电路检测是否有任何放电灯熄灭，如果一个放电灯不亮，则向控制电路发送电压控制信号，由此控制电路根据电压向降压转换器发送脉冲信号 控制信号，降压转换器根据脉冲信号产生并输出直流电压。 如果来自降压转换器的直流电压达到预定电压，则过电压检测电路向控制电路传导并发送电压控制信号，控制电路根据电压控制信号停止工作。 因此，防止了对其他正常放电灯的损坏。

公开(公告)号：US20060145631A1

公开(公告)日：2006-07-06

申请号：US11163471

申请日：2005-10-20

申请人： Wei-De Bao ,  Kuan-Hong Hsieh

发明人： Wei-De Bao ,  Kuan-Hong Hsieh

IPC分类号： H05B39/00 ,  H05B41/36

CPC分类号： H05B41/2855

摘要： A discharge lamp lighting circuit includes an open protection circuit. The discharge lamp lighting circuit includes an open protection circuit and an over-voltage detecting circuit. The open protection circuit detects whether any of the discharge lamps are unlit, and sends a voltage control signal to a control circuit if one of the discharge lamps is not lit, whereby the control circuit sends a pulse signal to a buck converter according to the voltage control signal, and the buck converter generates and outputs a DC voltage according to the pulse signal. If the DC voltage from the buck converter reaches a predetermined voltage, the over-voltage detecting circuit conducts and sends a voltage control signal to the control circuit, and the control circuit ceases operating according to the voltage control signal. Consequently, damage to the other normal discharge lamps is prevented.

摘要翻译： 放电灯点亮电路包括开路保护电路。 放电灯点亮电路包括开路保护电路和过电压检测电路。 开路保护电路检测是否有任何放电灯熄灭，如果一个放电灯不亮，则向控制电路发送电压控制信号，由此控制电路根据电压向降压转换器发送脉冲信号 控制信号，降压转换器根据脉冲信号产生并输出直流电压。 如果来自降压转换器的直流电压达到预定电压，则过电压检测电路向控制电路传导并发送电压控制信号，控制电路根据电压控制信号停止工作。 因此，防止了对其他正常放电灯的损坏。

公开(公告)号：US20060138972A1

公开(公告)日：2006-06-29

申请号：US11163433

申请日：2005-10-19

申请人： Kuan-Hong Hsieh ,  Wei-De Bao

发明人： Kuan-Hong Hsieh ,  Wei-De Bao

IPC分类号： H05B37/02

CPC分类号： H05B41/382 ,  H05B41/282 ,  H05B41/386

摘要： A starting voltage adjustment circuit (70), which can vary starting voltages to CCFLs (40) according to variations in the temperature of the immediate environment, is employed in an apparatus for driving CCFLs. The starting voltage adjustment circuit includes a zener diode (710), a thermal resistor (720), and a voltage dividing resistor (730) connected in series between a buck converter, a resonant boost converter, and ground. The starting voltage adjustment circuit also includes a control chip (740) which includes pins, of which one is connected between the thermal resistor and the voltage dividing resistor and outputs a constant voltage, and another is connected between the voltage dividing resistor and ground. The thermal resistor has a voltage drop thereacross varying with the temperature. The starting voltage adjustment circuit adjusts an input voltage to the resonant boost converter, thereby adjusting the starting voltage to the CCFLs according to variations in temperature.

摘要翻译： 在用于驱动CCFL的装置中采用起动电压调节电路（70），该启动电压调节电路（70）可根据直接环境的温度变化而将启动电压改变为CCFL（40）。 启动电压调节电路包括串联连接在降压转换器，谐振升压转换器和地之间的齐纳二极管（710），热电阻器（720）和分压电阻器（730）。 启动电压调整电路还包括控制芯片（740），其包括引脚，其中一个连接在热电阻器和分压电阻器之间并输出恒定电压，另一个连接在分压电阻器和地之间。 热敏电阻具有随温度变化的电压降。 启动电压调节电路调节到谐振升压转换器的输入电压，从而根据温度变化调节CCFL的启动电压。

公开(公告)号：US07375477B2

公开(公告)日：2008-05-20

申请号：US11168067

申请日：2005-06-28

申请人： Kuan-Hong Hsieh ,  Shin-Hong Chung ,  Wei-De Bao

发明人： Kuan-Hong Hsieh ,  Shin-Hong Chung ,  Wei-De Bao

IPC分类号： H05B37/00

CPC分类号： H05B41/2822 ,  H05B41/382

摘要： A CCFL (cold-cathode fluorescent lamp) driving system for multiple CCFL loads includes a transformer, a CCFL circuit, and a controlling circuit coupled between the transformer and the CCFL circuit. The CCFL circuit includes multiple CCFL loads. The transformer includes a primary winding and a secondary winding, with the primary winding coupled to a voltage source and the secondary winding coupled to the CCFL loads. The controlling circuit includes a part for generating a predetermined voltage signal to power the CCFL loads during a warm-up stage and another part for generating a modulation signal. With such circuit arrangement, each of the multiple CCFL loads is powered from an off state to an operationally-on state.

摘要翻译： 用于多个CCFL负载的CCFL（冷阴极荧光灯）驱动系统包括变压器，CCFL电路和耦合在变压器和CCFL电路之间的控制电路。 CCFL电路包括多个CCFL负载。 变压器包括初级绕组和次级绕组，初级绕组耦合到电压源，次级绕组耦合到CCFL负载。 控制电路包括用于产生预定电压信号以在预热阶段为CCFL负载供电的部分以及用于产生调制信号的另一部分。 利用这种电路布置，多个CCFL负载中的每一个从断开状态供电到操作开启状态。

公开(公告)号：US07208886B2

公开(公告)日：2007-04-24

申请号：US11163433

申请日：2005-10-19

申请人： Kuan-Hong Hsieh ,  Wei-De Bao

发明人： Kuan-Hong Hsieh ,  Wei-De Bao

IPC分类号： H05B37/02 ,  H05B41/36

CPC分类号： H05B41/382 ,  H05B41/282 ,  H05B41/386

摘要： A starting voltage adjustment circuit (70), which can vary starting voltages to CCFLs (40) according to variations in the temperature of the immediate environment, is employed in an apparatus for driving CCFLs. The starting voltage adjustment circuit includes a zener diode (710), a thermal resistor (720), and a voltage dividing resistor (730) connected in series between a buck converter, a resonant boost converter, and ground. The starting voltage adjustment circuit also includes a control chip (740) which includes pins, of which one is connected between the thermal resistor and the voltage dividing resistor and outputs a constant voltage, and another is connected between the voltage dividing resistor and ground. The thermal resistor has a voltage drop thereacross varying with the temperature. The starting voltage adjustment circuit adjusts an input voltage to the resonant boost converter, thereby adjusting the starting voltage to the CCFLs according to variations in temperature.

摘要翻译： 在用于驱动CCFL的装置中采用起动电压调节电路（70），该启动电压调节电路（70）可根据直接环境的温度变化而将启动电压改变为CCFL（40）。 启动电压调节电路包括串联连接在降压转换器，谐振升压转换器和地之间的齐纳二极管（710），热电阻器（720）和分压电阻器（730）。 启动电压调整电路还包括控制芯片（740），其包括引脚，其中一个连接在热电阻器和分压电阻器之间并输出恒定电压，另一个连接在分压电阻器和地之间。 热敏电阻具有随温度变化的电压降。 启动电压调节电路调节到谐振升压转换器的输入电压，从而根据温度变化调节CCFL的启动电压。