公开(公告)号：US07042171B1

公开(公告)日：2006-05-09

申请号：US10996377

申请日：2004-11-26

Applicant: Chang-Hua Lin

Inventor： Chang-Hua Lin

IPC: G05F1/00

CPC classification number: H05B41/282 ,  H05B41/2827 ,  Y10S315/02 ,  Y10S315/05

Abstract: A multiple-CCFL parallel driving circuit and the associated current balancing control method for LCD are presented, wherein the circuit comprises a plurality of CCFLs for providing the backlight for a LCD; a boosting transformer with a plurality of outputs for providing the driving voltage and current for driving the plurality CCFLs; a plurality of ballast capacitors, the ballast capacitors connect between the boosting transformer and the CCFLs; and a multiple CCFL current balancing circuit. This invention uses a low cost current mirror circuit to equalize the driving current of a plurality of CCFLs and thus significantly improve the uniformity of the displayed image on a large-size LCD.

Abstract translation: 提出了一种用于LCD的多CCFL并联驱动电路和相关电流平衡控制方法，其中电路包括用于为LCD提供背光的多个CCFL; 具有多个输出的升压变压器，用于提供用于驱动所述多个CCFL的驱动电压和电流; 多个镇流电容器，镇流电容器连接在升压变压器和CCFL之间; 和多个CCFL电流平衡电路。 本发明使用低成本电流镜电路来均衡多个CCFL的驱动电流，从而显着提高大尺寸LCD上的显示图像的均匀性。

公开(公告)号：US07012383B2

公开(公告)日：2006-03-14

申请号：US10842946

申请日：2004-05-10

Applicant: Chang-Hua Lin

Inventor： Chang-Hua Lin

IPC: G05F1/00

CPC classification number: H05B41/3925 ,  Y10S315/04

Abstract: A method for dimming operation of a lamp includes the steps of generating a trapezoidal wave signal in response to an input square wave low frequency dimming gating signal, and generating a driving signal that has a low frequency when the trapezoidal wave signal has a low level, that has a high frequency when the trapezoidal wave signal has a high level, that shifts gradually from the low frequency to the high frequency when the trapezoidal wave signal goes from the low level to the high level, and that shifts gradually from the high frequency to the low frequency when the trapezoidal wave signal goes from the high level to the low level. A module that performs the method is also disclosed.

Abstract translation: 一种用于调光灯的操作的方法包括以下步骤：响应于输入的方波低频调光门控信号产生梯形波信号，并且当梯形波信号具有低电平时产生具有低频的驱动信号， 当梯形波信号具有高电平时具有高频率，当梯形波信号从低电平变为高电平时，梯形波信号从低频逐渐向高频移动，并且从高频逐渐变为 当梯形波信号从高电平变为低电平时的低频。 还公开了执行该方法的模块。

公开(公告)号：US20050127847A1

公开(公告)日：2005-06-16

申请号：US10842946

申请日：2004-05-10

Applicant: Chang-Hua Lin

Inventor： Chang-Hua Lin

IPC: G05F1/00 ,  H05B41/14 ,  H05B41/392

CPC classification number: H05B41/3925 ,  Y10S315/04

Abstract: A method for dimming operation of a lamp includes the steps of generating a trapezoidal wave signal in response to an input square wave low frequency dimming gating signal, and generating a driving signal that has a low frequency when the trapezoidal wave signal has a low level, that has a high frequency when the trapezoidal wave signal has a high level, that shifts gradually from the low frequency to the high frequency when the trapezoidal wave signal goes from the low level to the high level, and that shifts gradually from the high frequency to the low frequency when the trapezoidal wave signal goes from the high level to the low level. A module that performs the method is also disclosed.

Abstract translation: 一种用于调光灯的操作的方法包括以下步骤：响应于输入的方波低频调光门控信号产生梯形波信号，并且当梯形波信号具有低电平时产生具有低频的驱动信号， 当梯形波信号具有高电平时具有高频率，当梯形波信号从低电平变为高电平时，梯形波信号从低频逐渐向高频移动，并且从高频逐渐变为 当梯形波信号从高电平变为低电平时的低频。 还公开了执行该方法的模块。

公开(公告)号：US6087785A

公开(公告)日：2000-07-11

申请号：US204368

申请日：1998-12-04

Applicant: Guan-Chyun Hsieh ,  Chang-Hua Lin

Inventor： Guan-Chyun Hsieh ,  Chang-Hua Lin

IPC: H05B41/285 ,  H05B41/16

CPC classification number: H05B41/2858

Abstract: A technology for eliminating acoustic resonance in a fluorescent lamp is disclosed in the present invention. The feature of the invention is to provide a harmonic compensating device to work with the fluorescent lamp and its relative peripheral circuits, such that current-dependent sources are provided to modulate the current in the lamp, thereby spreading the harmonic energy of the current in the lamp and eliminating acoustic resonance.

Abstract translation: 在本发明中公开了一种用于消除荧光灯中的声共振的技术。 本发明的特征在于提供一种与荧光灯及其相对外围电路一起工作的谐波补偿装置，使得提供依赖于电流的源来调制灯中的电流，从而将电流的谐波能量扩展到 灯和消除声共振。

公开(公告)号：US20060113926A1

公开(公告)日：2006-06-01

申请号：US10996377

申请日：2004-11-26

Applicant: Chang-Hua Lin

Inventor： Chang-Hua Lin

IPC: G05F1/00

CPC classification number: H05B41/282 ,  H05B41/2827 ,  Y10S315/02 ,  Y10S315/05

Abstract: A multiple-CCFL parallel driving circuit and the associated current balancing control method for LCD are presented, wherein the circuit comprises a plurality of CCFLs for providing the backlight for a LCD; a boosting transformer with a plurality of outputs for providing the driving voltage and current for driving the plurality CCFLs; a plurality of ballast capacitors, the ballast capacitors connect between the boosting transformer and the CCFLs; and a multiple CCFL current balancing circuit. This invention uses a low cost current mirror circuit to equalize the driving current of a plurality of CCFLs and thus significantly improve the uniformity of the displayed image on a large-size LCD.

Abstract translation: 提出了一种用于LCD的多CCFL并联驱动电路和相关电流平衡控制方法，其中电路包括用于为LCD提供背光的多个CCFL; 具有多个输出的升压变压器，用于提供用于驱动所述多个CCFL的驱动电压和电流; 多个镇流电容器，镇流电容器连接在升压变压器和CCFL之间; 和多个CCFL电流平衡电路。 本发明使用低成本电流镜电路来均衡多个CCFL的驱动电流，从而显着提高大尺寸LCD上的显示图像的均匀性。