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1. 发明申请

US20090261743A1 LIGHT EMITTING DIODE DRIVING MODULE 失效
标题翻译：发光二极管驱动模块
公开(公告)号：US20090261743A1
公开(公告)日：2009-10-22
申请号：US12147492
申请日：2008-06-27
申请人： Ke-Horng Chen , Chia-Lin Chiu , Lan-Shan Cheng
发明人： Ke-Horng Chen , Chia-Lin Chiu , Lan-Shan Cheng
IPC分类号： H05B37/00 , H05B41/36
CPC分类号： H05B33/0815 , H05B33/0827
摘要： An LED driving module suitable to drive a plurality of LED strings in parallel connection is disclosed. The LED driving module includes a voltage converting apparatus, a conduction voltage detecting apparatus, a reference voltage generating apparatus and a current-adjusting apparatus. The voltage converting apparatus produces a driving voltage according to a conduction voltage. The conduction voltage detecting apparatus detects the conducting states of the LED strings for producing a conduction voltage and an enabling signal. The reference voltage generating apparatus generates a first reference voltage according to the enabling signal. The current-adjusting apparatus produces a plurality of driving currents according to the first reference voltage, and the driving currents flow through the LED strings.
摘要翻译：公开了一种适合驱动并联连接的多个LED串的LED驱动模块。 LED驱动模块包括电压转换装置，导通电压检测装置，参考电压产生装置和电流调节装置。电压转换装置根据导通电压产生驱动电压。导通电压检测装置检测用于产生导通电压的LED串的导通状态和使能信号。参考电压产生装置根据使能信号产生第一参考电压。电流调节装置根据第一参考电压产生多个驱动电流，并且驱动电流流过LED串。

2. 发明授权

US08018170B2 Light emitting diode driving module 失效
标题翻译：发光二极管驱动模块
公开(公告)号：US08018170B2
公开(公告)日：2011-09-13
申请号：US12147492
申请日：2008-06-27
申请人： Ke-Horng Chen , Chia-Lin Chiu , Lan-Shan Cheng
发明人： Ke-Horng Chen , Chia-Lin Chiu , Lan-Shan Cheng
IPC分类号： H05B37/00
CPC分类号： H05B33/0815 , H05B33/0827
摘要： An LED driving module suitable to drive a plurality of LED strings in parallel connection is disclosed. The LED driving module includes a voltage converting apparatus, a conduction voltage detecting apparatus, a reference voltage generating apparatus and a current-adjusting apparatus. The voltage converting apparatus produces a driving voltage according to a conduction voltage. The conduction voltage detecting apparatus detects the conducting states of the LED strings for producing a conduction voltage and an enabling signal. The reference voltage generating apparatus generates a first reference voltage according to the enabling signal. The current-adjusting apparatus produces a plurality of driving currents according to the first reference voltage, and the driving currents flow through the LED strings.
摘要翻译：公开了一种适合驱动并联连接的多个LED串的LED驱动模块。 LED驱动模块包括电压转换装置，导通电压检测装置，参考电压产生装置和电流调节装置。电压转换装置根据导通电压产生驱动电压。导通电压检测装置检测用于产生导通电压的LED串的导通状态和使能信号。参考电压产生装置根据使能信号产生第一参考电压。电流调节装置根据第一参考电压产生多个驱动电流，并且驱动电流流过LED串。

3. 发明授权

US08148911B2 Current-balance circuit and backlight module having the same 有权
标题翻译：电流平衡电路和背光模块具有相同的功能
公开(公告)号：US08148911B2
公开(公告)日：2012-04-03
申请号：US12432054
申请日：2009-04-29
申请人： Ke-Horng Chen , Chia-Lin Chiu , Ling Li , Chia-Lin Liu , Chi-Neng Mo
发明人： Ke-Horng Chen , Chia-Lin Chiu , Ling Li , Chia-Lin Liu , Chi-Neng Mo
IPC分类号： H05B41/16
CPC分类号： H05B33/0827
摘要： The present invention relates to a current-balance circuit and a backlight module having the same. The current balance circuit includes a current balance unit, a control unit, and a detection unit. The current balance unit is connected to a plurality of light units to regulate the current of the plurality of light units, independent from the effects of input voltage. The detection unit is connected to the plurality of light units and the current balance unit to detect the minimum operating voltage for the plurality of light units. The control unit, connected to the current balance unit, controls the operation of the plurality of light units.
摘要翻译：本发明涉及一种电流平衡电路和具有该电流平衡电路的背光模块。电流平衡电路包括电流平衡单元，控制单元和检测单元。电流平衡单元连接到多个光单元，以独立于输入电压的影响来调节多个光单元的电流。检测单元连接到多个光单元和电流平衡单元，以检测多个光单元的最小工作电压。连接到当前平衡单元的控制单元控制多个光单元的操作。

4. 发明申请

US20120139439A1 LIGHT EMITTING DIODE DRVING APPARATUS AND METHOD FOR HOLDING DRIVING VOLATGE THEREOF 有权
标题翻译：发光二极管驱动装置及其驱动电压的方法
公开(公告)号：US20120139439A1
公开(公告)日：2012-06-07
申请号：US13028197
申请日：2011-02-15
申请人： Tsung-Hau Chang , Chia-Lin Chiu
发明人： Tsung-Hau Chang , Chia-Lin Chiu
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0824 , H05B33/0827 , Y02B20/346
摘要： A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a power converter, a voltage sample-and-hold and comparison circuit, and a pre-charge clock generator. The power converter has a power transistor switch for processing power conversion and outputs a driving voltage at an output terminal. The voltage sample-and-hold and comparison circuit enters a sample-and-hold mode or a comparing mode according to a dimming status signal. The voltage sample-and-hold and comparison circuit samples and holds a feedback voltage to obtain a pre-storage voltage during the sample-and-hold mode and compares the pre-storage voltage with the feedback voltage to obtain a comparison result during the comparing mode. The voltage sample-and-hold and comparison circuit generates a pre-charge enable signal according to the comparison result. The pre-charge clock generator generates a pre-charge clock signal to control the power transistor switch according to the pre-charge enable signal and a clock signal.
摘要翻译：公开了一种发光二极管（LED）驱动装置。 LED驱动装置包括功率转换器，电压采样保持和比较电路以及预充电时钟发生器。功率转换器具有用于处理功率转换的功率晶体管开关，并在输出端输出驱动电压。电压采样保持和比较电路根据调光状态信号进入采样保持模式或比较模式。电压采样保持和比较电路采样并保持反馈电压以在采样保持模式期间获得预存储电压，并将预存储电压与反馈电压进行比较，以在比较期间获得比较结果模式。电压采样保持和比较电路根据比较结果生成预充电使能信号。预充电时钟发生器产生预充电时钟信号，以根据预充电使能信号和时钟信号来控制功率晶体管开关。

5. 发明授权

US08502472B2 Light emitting diode driving apparatus and method for holding driving voltage thereof 有权
标题翻译：发光二极管驱动装置及其驱动电压的保持方法
公开(公告)号：US08502472B2
公开(公告)日：2013-08-06
申请号：US13028197
申请日：2011-02-15
申请人： Tsung-Hau Chang , Chia-Lin Chiu
发明人： Tsung-Hau Chang , Chia-Lin Chiu
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0824 , H05B33/0827 , Y02B20/346
摘要： A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a power converter, a voltage sample-and-hold and comparison circuit, and a pre-charge clock generator. The power converter has a power transistor switch for processing power conversion and outputs a driving voltage at an output terminal. The voltage sample-and-hold and comparison circuit enters a sample-and-hold mode or a comparing mode according to a dimming status signal. The voltage sample-and-hold and comparison circuit samples and holds a feedback voltage to obtain a pre-storage voltage during the sample-and-hold mode and compares the pre-storage voltage with the feedback voltage to obtain a comparison result during the comparing mode. The voltage sample-and-hold and comparison circuit generates a pre-charge enable signal according to the comparison result. The pre-charge clock generator generates a pre-charge clock signal to control the power transistor switch according to the pre-charge enable signal and a clock signal.
摘要翻译：公开了一种发光二极管（LED）驱动装置。 LED驱动装置包括功率转换器，电压采样保持和比较电路以及预充电时钟发生器。功率转换器具有用于处理功率转换的功率晶体管开关，并在输出端输出驱动电压。电压采样保持和比较电路根据调光状态信号进入采样保持模式或比较模式。电压采样保持和比较电路采样并保持反馈电压以在采样保持模式期间获得预存储电压，并将预存储电压与反馈电压进行比较，以在比较期间获得比较结果模式。电压采样保持和比较电路根据比较结果生成预充电使能信号。预充电时钟发生器产生预充电时钟信号，以根据预充电使能信号和时钟信号来控制功率晶体管开关。

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