公开(公告)号：US20060145634A1

公开(公告)日：2006-07-06

申请号：US11321474

申请日：2005-12-29

申请人： Yong-Xing You ,  Hua Xiao ,  Jian-Hui Lu

发明人： Yong-Xing You ,  Hua Xiao ,  Jian-Hui Lu

IPC分类号： H05B37/02 ,  H05B41/36

CPC分类号： H05B41/2855 ,  Y02B20/186

摘要： An LCD backlight driving circuit is provided for providing protection to LCD backlight lamps. In a preferred embodiment, the driving circuit for LCD backlight lamps comprises: a PWM controller sending control signals; two transistors receiving the control signals and sending two low-voltage pulse signals; an inverter converting the two low-voltage pulse signals to a high-voltage AC (Alternating Current) power; two lamps; two overvoltage protection circuits connected to the two lamps respectively; a voltage feedback module connected to the two lamps, a current feedback module connected to one of the two lamps; and a double-bridge circuit connected between the two lamps, and connected to the current feedback module for controlling the PWM controller to turn-on or turn-off. The driving circuit is capable of providing defective connection protection and open-circuit protection to LCD backlight lamps, and proportionately adjusting current flowing through the lamps.

摘要翻译： 提供LCD背光驱动电路，为LCD背光灯提供保护。 在优选实施例中，LCD背光灯的驱动电路包括：发送控制信号的PWM控制器; 两个晶体管接收控制信号并发送两个低电压脉冲信号; 将两个低压脉冲信号转换成高压AC（交流）功率的逆变器; 两盏灯 两个过电压保护电路分别连接到两个灯; 连接到两个灯的电压反馈模块，连接到两个灯之一的电流反馈模块; 和连接在两个灯之间的双桥电路，并连接到电流反馈模块，用于控制PWM控制器的导通或关断。 驱动电路能够为LCD背光灯提供有缺陷的连接保护和开路保护，并且成比例地调整流过灯的电流。

公开(公告)号：US07285924B2

公开(公告)日：2007-10-23

申请号：US11321474

申请日：2005-12-29

申请人： Yong-Xing You ,  Hua Xiao ,  Jian-Hui Lu

发明人： Yong-Xing You ,  Hua Xiao ,  Jian-Hui Lu

IPC分类号： G05F1/00

CPC分类号： H05B41/2855 ,  Y02B20/186

摘要： An LCD backlight driving circuit is provided for providing protection to LCD backlight lamps. In a preferred embodiment, the driving circuit for LCD backlight lamps comprises: a PWM controller sending control signals; two transistors receiving the control signals and sending two low-voltage pulse signals; an inverter converting the two low-voltage pulse signals to a high-voltage AC (Alternating Current) power; two lamps; two overvoltage protection circuits connected to the two lamps respectively; a voltage feedback module connected to the two lamps, a current feedback module connected to one of the two lamps; and a double-bridge circuit connected between the two lamps, and connected to the current feedback module for controlling the PWM controller to turn-on or turn-off. The driving circuit is capable of providing defective connection protection and open-circuit protection to LCD backlight lamps, and proportionately adjusting current flowing through the lamps.

摘要翻译： 提供LCD背光驱动电路，为LCD背光灯提供保护。 在优选实施例中，LCD背光灯的驱动电路包括：发送控制信号的PWM控制器; 两个晶体管接收控制信号并发送两个低电压脉冲信号; 将两个低压脉冲信号转换成高压AC（交流）功率的逆变器; 两盏灯 两个过电压保护电路分别连接到两个灯; 连接到两个灯的电压反馈模块，连接到两个灯之一的电流反馈模块; 和连接在两个灯之间的双桥电路，并连接到电流反馈模块，用于控制PWM控制器的导通或关断。 驱动电路能够为LCD背光灯提供有缺陷的连接保护和开路保护，并且成比例地调整流过灯的电流。

公开(公告)号：US07755298B2

公开(公告)日：2010-07-13

申请号：US12005814

申请日：2007-12-27

申请人： Han-Tao Liu ,  Tong Zhou ,  Hua Xiao ,  Kun Le ,  Jian-Hui Lu

发明人： Han-Tao Liu ,  Tong Zhou ,  Hua Xiao ,  Kun Le ,  Jian-Hui Lu

IPC分类号： H05B39/02

CPC分类号： H02M1/36

摘要： An exemplary power supply circuit (20) includes a scaler (21), a field-effect transistor (23), a pulse width modulation circuit (25), and a capacitor (29). The scaler includes an output port (213). The pulse width modulation circuit includes an input port (251). The input port of the pulse width modulation circuit is grounded via the capacitor. The field-effect transistor includes a gate electrode (231), a source electrode (232), and a drain electrode (233). The gate electrode is connected to the output port of the scaler. The source electrode is grounded. The drain electrode is connected to the input port of the pulse width modulation circuit.

摘要翻译： 示例性电源电路（20）包括缩放器（21），场效应晶体管（23），脉宽调制电路（25）和电容器（29）。 缩放器包括输出端口（213）。 脉宽调制电路包括输入端口（251）。 脉宽调制电路的输入端口通过电容器接地。 场效应晶体管包括栅电极（231），源电极（232）和漏电极（233）。 栅电极连接到定标器的输出端口。 源电极接地。 漏电极连接到脉宽调制电路的输入端口。

公开(公告)号：US07839661B2

公开(公告)日：2010-11-23

申请号：US12011977

申请日：2008-01-29

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

IPC分类号： H02M3/335

CPC分类号： H02J9/005

摘要： An exemplary power supply control circuit (200) includes a first port (201), a second port (202), a third port (203), a controllable switch (280), and a control circuit (270). The first and second ports are configured to receive a power supply voltage signal. The second and third ports are configured to output the power supply voltage signal to a load circuit. The controllable switch includes a control member (281) and a switch member (282). The control circuit is configured to control a working state of the control member. When the load circuit stops working, the control circuit controls the control member to control the switch member to be disconnected, so as to cut off the power supply voltage signal from outputting to the load circuit. A liquid crystal display (400) using the power supply control circuit is also provided.

摘要翻译： 示例性电源控制电路（200）包括第一端口（201），第二端口（202），第三端口（203），可控开关（280）和控制电路（270）。 第一和第二端口被配置为接收电源电压信号。 第二和第三端口被配置为将电源电压信号输出到负载电路。 可控开关包括控制构件（281）和开关构件（282）。 控制电路被配置为控制控制构件的工作状态。 当负载电路停止工作时，控制电路控制控制构件以控制开关构件的断开，从而将电源电压信号切断输出到负载电路。 还提供了使用电源控制电路的液晶显示器（400）。

公开(公告)号：US20080180977A1

公开(公告)日：2008-07-31

申请号：US12011977

申请日：2008-01-29

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

IPC分类号： H02M7/02 ,  G05F1/00 ,  G09G5/00

CPC分类号： H02J9/005

摘要： An exemplary power supply control circuit (200) includes a first port (201), a second port (202), a third port (203), a controllable switch (280), and a control circuit (270). The first and second ports are configured to receive a power supply voltage signal. The second and third ports are configured to output the power supply voltage signal to a load circuit. The controllable switch includes a control member (281) and a switch member (282 ). The control circuit is configured to control a working state of the control member. When the load circuit stops working, the control circuit controls the control member to control the switch member to be disconnected, so as to cut off the power supply voltage signal from outputting to the load circuit. A liquid crystal display (400) using the power supply control circuit is also provided.

摘要翻译： 示例性电源控制电路（200）包括第一端口（201），第二端口（202），第三端口（203），可控开关（280）和控制电路（270）。 第一和第二端口被配置为接收电源电压信号。 第二和第三端口被配置为将电源电压信号输出到负载电路。 可控开关包括控制构件（281）和开关构件（282）。 控制电路被配置为控制控制构件的工作状态。 当负载电路停止工作时，控制电路控制控制构件以控制开关构件的断开，从而将电源电压信号切断输出到负载电路。 还提供了使用电源控制电路的液晶显示器（400）。

公开(公告)号：US20080158919A1

公开(公告)日：2008-07-03

申请号：US12005814

申请日：2007-12-27

申请人： Han-Tao Liu ,  Tong Zhou ,  Hua Xiao ,  Kun Le ,  Jian-Hui Lu

发明人： Han-Tao Liu ,  Tong Zhou ,  Hua Xiao ,  Kun Le ,  Jian-Hui Lu

IPC分类号： H02H7/122

CPC分类号： H02M1/36

摘要： An exemplary power supply circuit (20) includes a scaler (21), a field-effect transistor (23), a pulse width modulation circuit (25), and a capacitor (29). The scaler includes an output port (213). The pulse width modulation circuit includes an input port (251). The input port of the pulse width modulation circuit is grounded via the capacitor. The field-effect transistor includes a gate electrode (231), a source electrode (232), and a drain electrode (233). The gate electrode is connected to the output port of the scaler. The source electrode is grounded. The drain electrode is connected to the input port of the pulse width modulation circuit.

摘要翻译： 示例性电源电路（20）包括缩放器（21），场效应晶体管（23），脉宽调制电路（25）和电容器（29）。 缩放器包括输出端口（213）。 脉宽调制电路包括输入端口（251）。 脉宽调制电路的输入端口通过电容器接地。 场效应晶体管包括栅电极（231），源电极（232）和漏电极（233）。 栅电极连接到定标器的输出端口。 源电极接地。 漏电极连接到脉宽调制电路的输入端口。

公开(公告)号：US08391034B2

公开(公告)日：2013-03-05

申请号：US12727239

申请日：2010-03-19

申请人： Jian-Hui Lu

发明人： Jian-Hui Lu

IPC分类号： H02H7/122

CPC分类号： H02M3/33507 ,  H02M2001/007

摘要： A power supply module includes an AC/DC converter, a voltage transforming circuit, a feedback circuit, and a filtering circuit. The AC/DC converter is used for converting the AC voltage to a primary DC voltage. The voltage transforming circuit is configured for transforming the primary DC voltage to the first DC voltage. The voltage transforming circuit includes a transformer, the transformer includes a primary winding. The feedback circuit is coupled to the primary winding of the transformer and is configured for sampling a current flowing through the primary winding to generate a feedback signal; and the filtering circuit is structured and arranged for filtering any surge voltage transmitted from the feedback circuit to the voltage transforming circuit. Wherein the voltage transforming circuit maintains the first DC voltage at a predetermined value according to the feedback signal. A related power supply module assembly is also provided.

摘要翻译： 电源模块包括AC / DC转换器，电压变换电路，反馈电路和滤波电路。 AC / DC转换器用于将交流电压转换为初级直流电压。 电压变换电路被配置为将初级DC电压转换为第一DC电压。 电压变换电路包括变压器，变压器包括初级绕组。 反馈电路耦合到变压器的初级绕组，并且被配置为对流过初级绕组的电流进行采样以产生反馈信号; 并且滤波电路被构造和布置成用于滤除从反馈电路传输到电压变换电路的任何浪涌电压。 其中，电压变换电路根据反馈信号将第一直流电压维持在预定值。 还提供了相关的电源模块组件。

公开(公告)号：US08339821B2

公开(公告)日：2012-12-25

申请号：US12650550

申请日：2009-12-31

申请人： Jian-Hui Lu

发明人： Jian-Hui Lu

IPC分类号： H02M7/155

CPC分类号： H02M1/00 ,  H02M2001/0032 ,  Y02B70/16

摘要： A power supply includes an adapter and a delay module. The adapter is operable to receive an input voltage and convert the input voltage into a first operation voltage to power a load controlled by a control unit. The adapter includes a filter capacitor configured to smooth the first operation voltage. The delay module detects the input voltage, and supplies a second operation voltage to the control unit when receiving the input voltage. The delay module continues supplying the second operation voltage to the control unit for a predetermined time period after the input voltage is no longer supplied to the adapter. As a result, the load operates for at most the predetermined time period and the filter capacitor discharges via the load after the input voltage is removed.

摘要翻译： 电源包括适配器和延迟模块。 适配器可操作以接收输入电压并将输入电压转换为第一操作电压以为由控制单元控制的负载供电。 适配器包括被配置为平滑第一操作电压的滤波电容器。 延迟模块检测输入电压，并在接收到输入电压时向控制单元提供第二操作电压。 在输入电压不再提供给适配器之后，延迟模块在预定时间段内继续向控制单元提供第二操作电压。 结果，负载最多在预定时间段内运行，并且滤波电容器在输入电压被去除之后通过负载放电。

公开(公告)号：US07848119B2

公开(公告)日：2010-12-07

申请号：US12069921

申请日：2008-02-12

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

IPC分类号： H02M3/335

CPC分类号： H02M3/3381

摘要： An exemplary DC to DC converter (2) includes a transistor (29), a first rectifying and filtering circuit (21), a pulse generating circuit (27) and a transformer (25). The first rectifying and filtering circuit transforms an external AC voltage to a first DC voltage. The transformer includes a primary winding (251), an assistant winding (252) connected with the primary winding in a flyback mode, and a secondary winding (253). The first DC voltage is connected to ground via the primary winding, the transistor in series. The pulse generating circuit includes a controlling terminal, a diode, a resistor, and a capacitor. One terminal of the assistant winding is connected to ground, and the other terminal of the assistant winding is connected to an anode of the diode. A cathode of the diode is connected to ground via the resistor and the capacitor in series. The controlling terminal is connected to gate electrode of the transistor.

摘要翻译： 示例性DC-DC转换器（2）包括晶体管（29），第一整流和滤波电路（21），脉冲发生电路（27）和变压器（25）。 第一整流滤波电路将外部交流电压变换为第一直流电压。 变压器包括初级绕组（251），以回扫模式与初级绕组连接的辅助绕组（252）和次级绕组（253）。 第一个直流电压通过初级绕组连接到地，晶体管串联。 脉冲发生电路包括控制端子，二极管，电阻器和电容器。 辅助绕组的一个端子连接到地，辅助绕组的另一个端子连接到二极管的阳极。 二极管的阴极通过电阻器和电容器串联连接到地。 控制端子连接到晶体管的栅电极。

公开(公告)号：US20080151587A1

公开(公告)日：2008-06-26

申请号：US12004850

申请日：2007-12-21

申请人： Jian-Hui Lu ,  Tong Zhou

发明人： Jian-Hui Lu ,  Tong Zhou

IPC分类号： H02M7/538

CPC分类号： H02M7/5381 ,  H02M2001/009

摘要： An exemplary inverter circuit (2) includes a first switch circuit (22) including a first transistor (221) and a second transistor (222); a second switch circuit (23) including a third transistor (231) and a fourth transistor (232); and a pulse width modulation circuit (21) including a first output terminal (211) and a second output terminal (212). A gate electrode of the first transistor is connected to the first output port. A gate electrode of the second transistor is connected to the second output port. A gate electrode of the third transistor is connected to the first output port. A gate electrode of the fourth transistor is connected to the second output port. A drain electrode of the third transistor is connected to a drain electrode of the first transistor, and a drain electrode of the fourth transistor is connected to a drain electrode of the second transistor.

摘要翻译： 示例性的逆变器电路（2）包括包括第一晶体管（221）和第二晶体管（222）的第一开关电路（22）。 包括第三晶体管（231）和第四晶体管（232）的第二开关电路（23）; 以及包括第一输出端子（211​​）和第二输出端子（212）的脉宽调制电路（21）。 第一晶体管的栅电极连接到第一输出端口。 第二晶体管的栅电极连接到第二输出端口。 第三晶体管的栅电极连接到第一输出端口。 第四晶体管的栅电极连接到第二输出端口。 第三晶体管的漏极连接到第一晶体管的漏电极，第四晶体管的漏电极连接到第二晶体管的漏电极。