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公开(公告)号：US09990074B2
公开(公告)日：2018-06-05
申请号：US14418625
申请日：2015-01-20
Inventor： Yucheng Lu , Xiaoping Tan , Xiang Yang
CPC classification number: G06F3/0416 , G06F3/044 , G09G3/36
Abstract: A driving circuit for touch screen, a touch screen, and an electronic terminal are disclosure. The driving circuit for touch screen comprises: a control circuit, used for generating and outputting a scanning signal and a data selection signal according to a position of an electrode to be driven; and a data selection circuit, an input end thereof being connected with said control circuit, output ends thereof each being connected with a corresponding scanning end of the touch screen, wherein the data selection circuit is configured to turn on or turn off a connection between an input end thereof and an output end corresponding to the electrode to be driven according to said data selection signal. In the driving circuit, the influence on the following detection of the touch points generated by the attenuation of the scanning signal during transmission process can be reduced effectively, so that the reliability and accuracy of the detection result can be ensured.
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2.发明授权LED backlight driving circuit and method for driving the LED backlight driving circuit 有权LED背光驱动电路及驱动LED背光驱动电路的方法公开(公告)号：US09232589B2
公开(公告)日：2016-01-05
申请号：US14006675
申请日：2013-06-27
Inventor： Xianming Zhang , Xiang Yang
IPC: H05B33/08
CPC classification number: H05B33/083 , G09G3/3406 , G09G2330/08 , H05B33/0884
Abstract: A light emitting diode (LED) backlight driving circuit includes a plurality of LED light bars, a power supply driving the LED light bars to light, and comparing units corresponding to the LED light bars one by one. A first input end of the comparing unit is coupled to a cathode end of the LED light bar, and a second input end of the comparing unit receives a first reference voltage. Each of the LED light bars is connected in series with a switching unit, an output end of the comparing unit is coupled to a statistic unit, an output end of the statistic unit is coupled to driving units corresponding to the switching units one by one and controlling the switching units to turn on/off. The statistic unit divides the LED light bars into two groups according to a logic state output by the comparing unit, and controls the driving unit to turn off one of two groups of LED light bars having a fewer number than the other group of the LED light bars.
Abstract translation: 发光二极管（LED）背光驱动电路包括多个LED灯条，将LED灯条驱动到光的电源，以及逐个对应于LED灯条的单元。 比较单元的第一输入端耦合到LED灯条的阴极端，并且比较单元的第二输入端接收第一参考电压。 每个LED灯条与开关单元串联连接，比较单元的输出端耦合到统计单元，统计单元的输出端逐个耦合到对应于开关单元的驱动单元， 控制开关单元打开/关闭。 统计单元根据比较单元输出的逻辑状态将LED灯条分成两组，并控制驱动单元关闭具有比另一组LED灯数量少的两组LED灯条之一 酒吧。
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公开(公告)号：US09232585B2
公开(公告)日：2016-01-05
申请号：US14130322
申请日：2013-12-03
Inventor： Xinhong Chen , Xiang Yang
CPC classification number: H05B33/0818 , G09G3/3406 , G09G3/3648 , G09G2320/064 , G09G2354/00 , H05B37/02 , H05B37/0281
Abstract: The present disclosure provides a backlight regulation circuit and a liquid crystal display having the same. The backlight regulation circuit includes a PWM signal generating module, a D/A conversion module, and a current driving module. The PWM signal generating module is configured for generating a PWM signal and outputting the PWM signal to the current driving module; the D/A conversion module receives an operation command inputted by user and outputs a preset voltage to the current driving module according to the operation command; the current driving module receives the PWM signal, amplifies the PWM signal according to the preset voltage, and outputs the amplified PWM signal to an electrical switch in control of switch-on and switch-off of a backlight, thereby controlling the switch-on and switch-off of the backlight. The present disclosure integrates multiple LED backlight schemes, expands the application range of the backlight regulation circuit, and shortens the development cycle.
Abstract translation: 本公开提供了一种背光调节电路和具有该背光调节电路的液晶显示器。 背光调节电路包括PWM信号产生模块，D / A转换模块和电流驱动模块。 PWM信号生成模块被配置为产生PWM信号并将PWM信号输出到当前驱动模块; D / A转换模块接收用户输入的操作命令，并根据操作命令向当前驱动模块输出预设电压; 当前驱动模块接收PWM信号，根据预设电压放大PWM信号，并将放大的PWM信号输出到电开关，控制背光源的接通和关断，从而控制开关和 关闭背光。 本公开集成了多个LED背光方案，扩展了背光调节电路的应用范围，缩短了开发周期。
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4.发明授权LED backlight driving circuit, LCD device, and method for driving the LED backlight driving circuit 有权LED背光驱动电路，LCD装置以及驱动LED背光驱动电路的方法公开(公告)号：US09196202B2
公开(公告)日：2015-11-24
申请号：US13884641
申请日：2013-04-07
Inventor： Xianming Zhang , Xiang Yang
CPC classification number: G09G3/36 , G09G3/3406 , H05B33/089
Abstract: A light emitting diode (LED) backlight driving circuit of the present disclosure includes a monitor module, a first light cluster, a first boost voltage module that drives the first light cluster, a second light cluster, and a second boost voltage module that drives the second light cluster. The first boost voltage module includes a first detection unit that detects an output current of the first boost voltage module, and the second boost voltage module includes a second detection unit that detects an output current of the second boost voltage module. The monitor module includes a current comparing unit coupled to the first detection unit and the second detection unit, and an actuator coupled to the current comparing unit. The actuator controls running states of the first boost voltage module and the second boost voltage module.
Abstract translation: 本公开的发光二极管（LED）背光驱动电路包括监视器模块，第一光群，驱动第一光群的第一升压电压模块，第二光群和驱动第二光簇的第二升压电压模块 第二光群。 第一升压电压模块包括检测第一升压电压模块的输出电流的第一检测单元，第二升压电压模块包括检测第二升压电压模块的输出电流的第二检测单元。 监视器模块包括耦合到第一检测单元和第二检测单元的电流比较单元以及耦合到电流比较单元的致动器。 致动器控制第一升压电压模块和第二升压电压模块的运行状态。
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公开(公告)号：US20150208473A1
公开(公告)日：2015-07-23
申请号：US14130322
申请日：2013-12-03
Inventor： Xinhong Chen , Xiang Yang
CPC classification number: H05B33/0818 , G09G3/3406 , G09G3/3648 , G09G2320/064 , G09G2354/00 , H05B37/02 , H05B37/0281
Abstract: The present disclosure provides a backlight regulation circuit and a liquid crystal display having the same. The backlight regulation circuit includes a PWM signal generating module, a D/A conversion module, and a current driving module. The PWM signal generating module is configured for generating a PWM signal and outputting the PWM signal to the current driving module; the D/A conversion module receives an operation command inputted by user and outputs a preset voltage to the current driving module according to the operation command; the current driving module receives the PWM signal, amplifies the PWM signal according to the preset voltage, and outputs the amplified PWM signal to an electrical switch in control of switch-on and switch-off of a backlight, thereby controlling the switch-on and switch-off of the backlight. The present disclosure integrates multiple LED backlight schemes, expands the application range of the backlight regulation circuit, and shortens the development cycle.
Abstract translation: 本公开提供了一种背光调节电路和具有该背光调节电路的液晶显示器。 背光调整电路包括PWM信号发生模块，D / A转换模块和电流驱动模块。 PWM信号生成模块被配置为产生PWM信号并将PWM信号输出到当前驱动模块; D / A转换模块接收用户输入的操作命令，并根据操作命令向当前驱动模块输出预设电压; 当前驱动模块接收PWM信号，根据预设电压放大PWM信号，并将放大的PWM信号输出到电开关，控制背光源的接通和关断，从而控制开关和 关闭背光。 本公开集成了多个LED背光方案，扩展了背光调节电路的应用范围，缩短了开发周期。
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Patent Agency Ranking
6.发明申请LED BACKLIGHT DRIVING CIRCUIT, LCD DEVICE, AND METHOD FOR DRIVING THE LED BACKLIGHT DRIVING CIRCUIT 有权LED背光驱动电路，LCD装置及驱动LED背光驱动电路的方法公开(公告)号：US20140333518A1
公开(公告)日：2014-11-13
申请号：US13981587
申请日：2013-06-28
Inventor： Xianming Zhang , Xiang Yang
CPC classification number: G09G3/36 , G09G3/003 , G09G3/3406 , H05B33/0809 , H05B33/0815 , H05B33/0824 , H05B33/0851
Abstract: A light emitting diode (LED) backlight driving circuit includes a power module, a constant current driving module, and an LED light bar coupled to the power module. The power module is coupled to a power-voltage collecting module outputting a second comparison voltage, and the LED light bar is coupled to a light-bar-voltage collecting module outputting a first comparison voltage. The constant current driving module includes a switching unit and a control unit coupled to the switching unit and adjusting an output voltage of the power module, the first comparison voltage and the second comparison voltage are sent to the switching unit, and a preset reference voltage is sent to the switching unit. When the first comparison voltage deviates from the reference voltage, and an absolute value of the reference voltage VF subtracted from the first comparison voltage exceeds a preset deviation range of a voltage, the switching unit outputs the first comparison voltage to the control unit. When the absolute value of the reference voltage VF subtracted from the first comparison voltage is within the preset deviation range of the voltage, the switching unit ouputs the second comparison voltage to the control unit.
Abstract translation: 发光二极管（LED）背光驱动电路包括电源模块，恒流驱动模块和耦合到功率模块的LED灯条。 电源模块耦合到输出第二比较电压的电源电压采集模块，并且LED灯条耦合到输出第一比较电压的光棒电压收集模块。 恒流驱动模块包括开关单元和耦合到开关单元并控制功率模块的输出电压的控制单元，第一比较电压和第二比较电压被发送到开关单元，并且预设参考电压为 发送到切换单元。 当第一比较电压偏离参考电压，并且从第一比较电压减去的参考电压VF的绝对值超过电压的预设偏差范围时，开关单元将第一比较电压输出到控制单元。 当从第一比较电压减去的参考电压VF的绝对值在电压的预设偏差范围内时，开关单元将第二比较电压输出到控制单元。
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公开(公告)号：US20140197742A1
公开(公告)日：2014-07-17
申请号：US13824396
申请日：2013-01-25
Inventor： Dan Cao , Xiang Yang
IPC: H05B33/08
CPC classification number: H05B33/0815
Abstract: An LED drive circuit, which comprises a transformer, an MOS tube, a power regulating resistor, a direct current isolation circuit, a rectifying circuit, and a voltage control circuit; when the voltage of the control terminal of the voltage control circuit is higher than the threshold voltage of the MOS tube, the MOS tube is on, a current from an external power supply flows through the first winding of the transformer, the MOS tube and the power regulating resistor successively; when the voltage of the power regulating resistor is close to the voltage of the reference terminal of the voltage control circuit, the MOS tube is cut off, the second winding of the transformer charges the capacitor of the MOS tube via the direct current isolation circuit, the rectifying circuit is on, and the first winding of the transformer supplies power to the LED load via the rectifying circuit.
Abstract translation: 一种LED驱动电路，包括变压器，MOS管，功率调节电阻，直流隔离电路，整流电路和电压控制电路; 当电压控制电路的控制端子的电压高于MOS管的阈值电压时，MOS管导通，来自外部电源的电流流过变压器的第一绕组，MOS管和 功率调节电阻器; 当功率调节电阻的电压接近电压控制电路的基准端的电压时，MOS管被切断，变压器的第二绕组经由直流隔离电路对MOS管的电容器充电， 整流电路接通，变压器的第一绕组经由整流电路向LED负载供电。
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公开(公告)号：US10048550B2
公开(公告)日：2018-08-14
申请号：US14901048
申请日：2015-09-24
Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd. , Wuhan China Star Optoelectronics Technology Co., Ltd.
Inventor： Chunpeng Guo , Jiehui Qin , Xiang Yang
IPC: G02F1/1335 , G02F1/1345
Abstract: The present invention provides a driver chip structure, and the driver chip structure comprises a substrate and a plurality of connection bumps which are located on the substrate and equal in size, and the substrate comprises a surface, and the plurality of connection bumps are spaced and aligned on the surface in array, and sectional appearances of the connection bumps parallel with the surface are trapezoids or triangles. The present invention also discloses a liquid crystal display device.
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9.发明授权LED backlight driving circuit and method for driving the LED backlight driving circuit 有权LED背光驱动电路及驱动LED背光驱动电路的方法公开(公告)号：US09253841B2
公开(公告)日：2016-02-02
申请号：US14235091
申请日：2014-01-06
Inventor： Xiang Yang
CPC classification number: H05B33/0845 , G09G3/3406 , G09G2320/062 , G09G2330/021 , H05B33/0806 , H05B33/0815 , H05B37/02
Abstract: A light emitting diode (LED) backlight driving circuit includes a power assembly, a control assembly, and at least two LED lamps. The control assembly generates a power control signal according to a working state of the LED lamp, and the power assembly outputs a power corresponding to an on-LED lamp according to the power control signal.
Abstract translation: 发光二极管（LED）背光驱动电路包括电源组件，控制组件和至少两个LED灯。 控制组件根据LED灯的工作状态产生功率控制信号，并且功率组件根据功率控制信号输出对应于LED灯的功率。
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公开(公告)号：US08975828B2
公开(公告)日：2015-03-10
申请号：US13807721
申请日：2012-11-25
Inventor： Dan Cao , Xiang Yang
CPC classification number: H05B33/0803 , H02M3/335 , H05B33/0815 , H05B41/36 , Y02B20/341
Abstract: The present invention provides a DC boost topology circuit for backlight driving, which includes a coupling inductor including a primary coil having an end connected to a DC voltage input terminal and an opposite end connected to a secondary coil and a field-effect transistor that has an end grounded. An energy storage module includes a first capacitor and a first diode. The secondary coil has an end connected to the first capacitor and an opposite end connected to an opposite end of the primary coil and the first diode of which an opposite end connected to an opposite end of the first capacitor. A circuit protection unit has an end connected to a common terminal of the first diode and the first capacitor and an opposite end connected to a DC voltage output terminal. The topology circuit has an output voltage that is multiple times of that of known circuits.
Abstract translation: 本发明提供了一种用于背光驱动的DC升压拓扑电路，其包括耦合电感器，该耦合电感器包括一个初级线圈，该初级线圈的一端连接到直流电压输入端，另一端连接到次级线圈，场效应晶体管具有 端接地。 能量存储模块包括第一电容器和第一二极管。 次级线圈的端部连接到第一电容器，另一端连接到初级线圈的相对端，第一二极管的相对端连接到第一电容器的相对端。 电路保护单元的端部连接到第一二极管的公共端子和第一电容器，并且相对端连接到DC电压输出端子。 拓扑电路的输出电压是已知电路的多倍。
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