公开(公告)号：US07888889B2

公开(公告)日：2011-02-15

申请号：US12490976

申请日：2009-06-24

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: G05F1/00

CPC classification number: H05B41/2855 ,  Y02B20/186 ,  Y10S315/07

Abstract: The present invention provides a protection means for a driving circuit which drives a set of external electrode fluorescent lamps (EEFL). The driving circuit with protection function for driving a set of EEFLs consistent with the present invention includes: a transformer connected to the set of EEFLs; a switching network connected to the transformer which delivers power to the transformer; a sensing circuit connected to the set of EEFLs which detects disconnection if one light source is disconnected; and a controller connected to the switching network which controls the switching network to reduce the total current supplied to the EEFLs which remain connected, if the sensing circuit detects that one EEFL is disconnected. Appropriate protection can therefore be implemented when the EEFL is disconnected on one end or both ends.

Abstract translation: 本发明提供一种用于驱动一组外部电极荧光灯（EEFL）的驱动电路的保护装置。 具有与本发明一致的用于驱动一组EEFL的保护功能的驱动电路包括：连接到该组EEFL的变压器; 连接到向变压器供电的变压器的开关网络; 连接到一组EEFL的感测电路，如果一个光源断开则检测断开; 以及连接到交换网络的控制器，如果感测电路检测到一个EEFL被断开，则控制交换网络以减少提供给保持连接的EEFL的总电流。 因此，当EEFL在一端或两端断开时，可以实现适当的保护。

公开(公告)号：US07394209B2

公开(公告)日：2008-07-01

申请号：US10870750

申请日：2004-06-16

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H05B37/02

CPC classification number: H02M3/3376 ,  H05B41/2828 ,  H05B41/2855 ,  Y02B20/185 ,  Y02B70/1433

Abstract: A liquid crystal display system and CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.

Abstract translation: 使用消除与功率MOSFET相关的开关损耗的高效率零电压切换技术来提供液晶显示系统和CCFL功率转换器电路。 通过考虑谐振回路中的寄生电容，在CCFL点火中使用最佳的扫频技术。 此外，电路是自学习的，并且适于确定具有给定负载的电路的最佳工作频率。 也可以提供过电压保护电路，以确保在开灯状态下保护电路部件。

公开(公告)号：US20070080911A1

公开(公告)日：2007-04-12

申请号：US11247831

申请日：2005-10-11

Applicant: Da Liu ,  Yung-Lin Lin

Inventor： Da Liu ,  Yung-Lin Lin

IPC: G09G3/32

CPC classification number: H05B33/0827 ,  G09G3/3413 ,  G09G3/342 ,  G09G2320/0233 ,  G09G2320/0633 ,  G09G2320/0666 ,  G09G2330/021 ,  H05B33/0815

Abstract: A method according to one embodiment may include supplying power to an LED array having at least a first string of LEDs and a second string of LEDs coupled in parallel, each of the strings includes at least two LEDs. The method of this embodiment may also include comparing a first feedback signal from the first string of LEDs and a second feedback signal from the second string of LEDs. The first feedback signal is proportional to current in said first string of LEDs and said second feedback signal is proportional to current in said second string of LEDs. The method of this embodiment may also include controlling a voltage drop of at least the first string of LEDs to adjust the current of the first string of LEDs relative to the second string of LEDs, based on, at least in part, the comparing of the first and second feedback signals. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Abstract translation: 根据一个实施例的方法可以包括向具有至少第一串LED串的LED阵列供电，并且并联耦合的第二串LED串联，每个串包括至少两个LED。 该实施例的方法还可以包括比较来自第一串LED的第一反馈信号和来自第二LED串的第二反馈信号。 所述第一反馈信号与所述第一串LED中的电流成比例，并且所述第二反馈信号与所述第二LED串中的电流成比例。 该实施例的方法还可以包括：至少部分地基于对第一串LED的比较来控制至少第一串LED的电压降以调节第一LED串相对于第二LED串的电流 第一和第二反馈信号。 当然，在不偏离本实施例的情况下，可以进行许多替代，变化和修改。

公开(公告)号：US07120035B2

公开(公告)日：2006-10-10

申请号：US10690103

申请日：2003-10-21

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M3/335

CPC classification number: H05B41/2824 ,  H02M7/53806 ,  H05B41/3927 ,  Y02B20/186 ,  Y10S323/905

Abstract: An integrated circuit inverter controller that includes at least one input pin that is configured to receive two or more input signals. The input pin may be multiplexed so that the appropriate input signal is directed to appropriate circuitry within the controller to support two or more functions of the controller. Alternatively, the input signals may be present in differing time periods so that a single pin can support two or more functions. Multifunctional or multitasked pins reduce the overall pin count of the inverter controller.

公开(公告)号：US20050212790A1

公开(公告)日：2005-09-29

申请号：US11111642

申请日：2005-04-21

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H05B41/282 ,  H05B41/392 ,  H02M7/538

CPC classification number: H05B41/282 ,  H05B41/2827 ,  H05B41/2828 ,  H05B41/3921 ,  Y02B20/183

Abstract: A power supply system is provided for a multiple lamp LCD panel. In one aspect, the power supply includes a plurality of transformers for driving a plurality of respective CCFLs. The primary sides of each transformer are coupled in series to thereby reduce the stress on each transformer. For LCD panels that include longer CCFLs, a power supply is provided that includes a plurality of transformers for driving a plurality of respective CCFLs. The primary sides of each transformer are coupled in series and each lamp is coupled to two secondary sides of the transformers, thereby reducing the problems associated with longer CCFL tubes. In any of the embodiments, the power supply can be adapted to convert a high voltage DC signal to high voltage AC used to power the lamps.

公开(公告)号：US20050174818A1

公开(公告)日：2005-08-11

申请号：US10870750

申请日：2004-06-16

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M3/24 ,  H02M3/337 ,  H05B41/282 ,  H05B41/285

CPC classification number: H02M3/3376 ,  H05B41/2828 ,  H05B41/2855 ,  Y02B20/185 ,  Y02B70/1433

Abstract: A liquid crystal display system and CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.

Abstract translation: 使用消除与功率MOSFET相关的开关损耗的高效率零电压切换技术来提供液晶显示系统和CCFL功率转换器电路。 通过考虑谐振回路中的寄生电容，在CCFL点火中使用最佳的扫频技术。 此外，电路是自学习的，并且适于确定具有给定负载的电路的最佳工作频率。 也可以提供过电压保护电路，以确保在开灯状态下保护电路部件。

公开(公告)号：US06856519B2

公开(公告)日：2005-02-15

申请号：US10139619

申请日：2002-05-06

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H01L27/04 ,  H01L21/822 ,  H02M7/538 ,  H05B41/282 ,  H05B41/392 ,  H02M3/335

CPC classification number: H05B41/2824 ,  H02M7/53806 ,  H05B41/3927 ,  Y02B20/186 ,  Y10S323/905

Abstract: An integrated circuit inverter controller that includes at least one input pin that is configured to receive two or more input signals. The input pin may be multiplexed so that the appropriate input signal is directed to appropriate circuitry within the controller to support two or more functions of the controller. Alternatively, the input signals may be present in differing time periods so that a single pin can support two or more functions. Multifunctional or multitasked pins reduce the overall pin count of the inverter controller.

公开(公告)号：US06809938B2

公开(公告)日：2004-10-26

申请号：US10690102

申请日：2003-10-21

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M3335

CPC classification number: H05B41/2824 ,  H02M7/53806 ,  H05B41/3927 ,  Y02B20/186 ,  Y10S323/905

Abstract: An integrated circuit inverter controller that includes at least one input pin that is configured to receive two or more input signals. The input pin may be multiplexed so that the appropriate input signal is directed to appropriate circuitry within the controller to support two or more functions of the controller. Alternatively, the input signals may be present in differing time periods so that a single pin can support two or more functions. Multifunctional or multitasked pins reduce the overall pin count of the inverter controller.

Abstract translation: 一种集成电路逆变器控制器，包括被配置为接收两个或更多个输入信号的至少一个输入引脚。 输入引脚可以被复用，使得适当的输入信号被引导到控制器内的适当电路，以支持控制器的两个或多个功能。 或者，输入信号可以以不同的时间段存在，使得单个引脚可以支持两个或更多个功能。 多功能或多任务引脚可减少变频器控制器的总体引脚数。

公开(公告)号：US06396722B2

公开(公告)日：2002-05-28

申请号：US09850222

申请日：2001-05-07

Applicant: Yung-Lin Lin

Inventor： Yung-Lin Lin

IPC: H02M324

CPC classification number: H02M7/523 ,  H02M7/5387 ,  H02M2001/0048 ,  H02M2007/4815 ,  H05B41/2828 ,  H05B41/2855 ,  H05B41/3927 ,  Y02B20/185 ,  Y02B70/1441 ,  Y02B70/1491

Abstract: A CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.

Abstract translation: 使用高效率零电压切换技术提供CCFL功率转换器电路，其消除与功率MOSFET相关的开关损耗。 通过考虑谐振回路中的寄生电容，在CCFL点火中使用最佳的扫频技术。 此外，电路是自学习的，并且适于确定具有给定负载的电路的最佳工作频率。 也可以提供过电压保护电路，以确保在开灯状态下保护电路部件。

公开(公告)号：US07768806B2

公开(公告)日：2010-08-03

申请号：US11637421

申请日：2006-12-11

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M7/525

CPC classification number: H02M3/33507 ,  H02M7/48

Abstract: A DC/AC inverter and method thereof are disclosed. The DC/AC inverter for driving a load includes a DC power supply for supplying a DC input voltage, a converter circuit coupled to the DC power supply which converts the DC input voltage into an AC signal used to drive the load, and a control circuit coupled to the converter circuit which sets a frequency of the AC signal. The control circuit is further capable of operating the DC/AC inverter in a fixed frequency mode and in a variable frequency mode in accordance with the DC input voltage and the load condition.

Abstract translation: 公开了一种DC / AC逆变器及其方法。 用于驱动负载的DC / AC逆变器包括用于提供DC输入电压的DC电源，耦合到DC电源的转换器电路，其将DC输入电压转换为用于驱动负载的AC信号，以及控制电路 耦合到设置AC信号的频率的转换器电路。 控制电路还能够根据直流输入电压和负载条件以固定频率模式和变频模式操作DC / AC逆变器。