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    • 4. 发明授权
    • Feedback sampling control circuit for lamp driving system
    • 灯驱动系统反馈采样控制电路
    • US07067991B2
    • 2006-06-27
    • US11067371
    • 2005-02-28
    • Cheng-Chia HsuYu-Cheng PanChia-Yuan ChenJong-Chi TsengTeng-Ho Wu
    • Cheng-Chia HsuYu-Cheng PanChia-Yuan ChenJong-Chi TsengTeng-Ho Wu
    • H05B37/02
    • H05B41/3927H05B41/2824Y02B20/186Y10S315/04
    • The invention discloses a feedback sampling control circuit for a lamp driving system having a feedback loop, in that the feedback sampling control circuit includes a switch and an effective current sampling controller. The switch is electrically coupled in the feedback path of the lamp driving system. The effective current sampling controller controls switching of the switch based on a voltage or current signal from a high voltage terminal of the lamp, such that an effective current actually sampled by a feedback controller in the lamp driving system is controlled so that a current component of a parasitic capacitance contained in the effective current is minimized. Thereby, the disadvantage caused by the leakage current through the parasitic capacitance can be eliminated and it is thus possible to precisely control the lamp current and to obtain a stable brightness quality.
    • 本发明公开了一种具有反馈回路的灯驱动系统的反馈采样控制电路,其中反馈采样控制电路包括开关和有效电流采样控制器。 开关在灯驱动系统的反馈路径中电耦合。 有效电流采样控制器基于来自灯的高压端子的电压或电流信号来控制开关的开关,使得由灯驱动系统中的反馈控制器实际采样的有效电流被控制,使得电流分量 包含在有效电流中的寄生电容最小化。 由此,能够消除由寄生电容的漏电流引起的缺点,能够精确地控制灯电流并获得稳定的亮度品质。
    • 5. 发明授权
    • Lamp driving device with open voltage control
    • 具有开路电压控制的灯驱动装置
    • US08093829B2
    • 2012-01-10
    • US12474217
    • 2009-05-28
    • Yu-Cheng PanWei-Chun Yeh
    • Yu-Cheng PanWei-Chun Yeh
    • H05B41/36
    • H05B41/2855Y02B20/186
    • A lamp driving device with an open voltage control comprises a DC power source, a square wave switch, a square wave controller, an LC resonant circuit, a driver transformer and a current detector; wherein the square wave switch outputs a square wave signal to the LC resonant circuit, the LC resonant circuit converts the square wave signal into a sinusoidal wave signal and outputs the sinusoidal wave signal to the driver transformer, and finally the driver transformer drives the lamp and the current detector is used to detect the operation of the lamp, and, if the lamp is found open-circuit, a PWM control pin will control the square wave controller to stop the operation of the lamp driving device, thereby enhancing safety in using the lamp.
    • 具有开路电压控制的灯驱动装置包括直流电源,方波开关,方波控制器,LC谐振电路,驱动变压器和电流检测器; 其中方波开关向LC谐振电路输出方波信号,LC谐振电路将方波信号转换为正弦波信号,并将正弦波信号输出到驱动变压器,最后驱动变压器驱动灯和 电流检测器用于检测灯的操作,如果灯被发现为开路,则PWM控制引脚将控制方波控制器停止灯驱动装置的操作,从而提高了使用灯的安全性 灯。
    • 6. 发明申请
    • LCD BACKLIGHT DRIVING DEVICE WITH AN ISOLATING TRANSFORMER
    • 具有隔离变压器的液晶背光驱动装置
    • US20100271358A1
    • 2010-10-28
    • US12832984
    • 2010-07-08
    • Cheng-Chia HSUYu-Cheng PANHo-Wen CHEN
    • Cheng-Chia HSUYu-Cheng PANHo-Wen CHEN
    • G09G3/36G06F3/038
    • H05B41/2827
    • An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer, since said isolating transformer is placed between said square wave generator and said driver transformer, it helps to effectively shorten a safety distance required for setting up said driver transformer; the present invention uses said isolating transformer to shorten the safety distance required than that of using said driver transformer directly and to decrease an area in implementing a circuit board and to cut cost of said device.
    • 具有隔离变压器的LCD背光驱动装置包括直流电源,方波发生器,方波控制器,所述隔离变压器和驱动变压器; 其中所述隔离变压器具有连接到所述方波发生器的初级侧和连接到所述驱动变压器的次级侧,因为所述隔离变压器被放置在所述方波发生器和所述驱动变压器之间,所以有助于有效地缩短 设置驱动变压器; 本发明使用所述隔离变压器来缩短直接使用所述驱动变压器所需的安全距离,并且减少实现电路板的面积并降低所述装置的成本。
    • 8. 发明授权
    • Two-end driven lamp controlling device
    • 两端驱动灯控制装置
    • US07675243B2
    • 2010-03-09
    • US11938859
    • 2007-11-13
    • Cheng-Chia HsuTeng-Kang ChangYun-Ching WuYu-Cheng Pan
    • Cheng-Chia HsuTeng-Kang ChangYun-Ching WuYu-Cheng Pan
    • H05B41/24
    • H05B41/2827
    • A two-end driven lamp controlling device includes a direct-current (DC) power supply, square wave switches, a square wave controller, a plurality of lamps, a plurality of starting transformers and a plurality of lamps commonly connective transformers, wherein the plurality of starting transformers or the plurality of lamps commonly connective transformers are disposed besides the plurality of lamps and the square wave switches are connected to the sides of the plurality of starting transformers or the plurality of lamps commonly connective transformers and to the DC power supply and can receive signals from the square wave controller. The present invention utilizes a circuitry design of a plurality of lamps, a plurality of starting transformers and a plurality of lamps commonly connective transformers so as to make the brightness of the plurality of lamps effectively homogenized and balanced and, moreover, to solve the problem of high cost for conventional devices, which use too many components for maintaining the brightness of the lamps.
    • 两端驱动灯控制装置包括直流(DC)电源,方波开关,方波控制器,多个灯,多个起动变压器和多个通常连接变压器的灯,其中多个 起动变压器或多个灯通常连接变压器配置在多个灯之外,方波开关连接到多个起动变压器或多个灯通常连接变压器的侧面和直流电源,并且可以 从方波控制器接收信号。 本发明利用多个灯的电路设计,多个起动变压器和多个灯,通常连接变压器,以使多个灯的亮度有效地均匀化和平衡,此外,解决了 传统设备的高成本,其使用太多的组件来维持灯的亮度。