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    • 1. 发明申请
    • Liquid crystal display device and driving method thereof
    • 液晶显示装置及其驱动方法
    • US20090289928A1
    • 2009-11-26
    • US12454876
    • 2009-05-26
    • Rui-Fu Shi
    • Rui-Fu Shi
    • G06F3/038
    • G09G3/3614G09G2320/0247
    • A liquid crystal display (LCD) device with a driving method includes an LCD panel, a data driving circuit, a common voltage generating circuit, and a gate driving circuit. The LCD panel includes multiple data lines and multiple scanning lines intersecting with the data lines, and a common electrode. The gate driving circuit provides multiple gate-scanning signals to scan the scanning lines. The common voltage generating circuit provides a common voltage to the common electrode. The data driving circuit provides a gray level voltage signal including multiple voltage levels to the data lines. The common voltage is serial square waves having at least two non-identical frame periods. The square waves in each non-identical frame period of the common voltage in one frame have a constant period.
    • 具有驱动方法的液晶显示器(LCD)装置包括LCD面板,数据驱动电路,公共电压产生电路和栅极驱动电路。 LCD面板包括与数据线相交的多个数据线和多条扫描线,以及公共电极。 栅极驱动电路提供多个栅极扫描信号来扫描扫描线。 公共电压产生电路为公共电极提供公共电压。 数据驱动电路向数据线提供包括多个电压电平的灰度级电压信号。 公共电压是具有至少两个非相同帧周期的串行方波。 一帧中公共电压的每个不相同帧周期中的方波具有恒定周期。
    • 2. 发明申请
    • Method for adjusting common voltage of liquid crystal display device
    • 调整液晶显示装置公共电压的方法
    • US20090262103A1
    • 2009-10-22
    • US12386602
    • 2009-04-20
    • Shun-Ming Huang
    • Shun-Ming Huang
    • G09G5/00
    • G09G3/3611G09G3/3614G09G3/3655G09G2320/0247G09G2320/0693G09G2360/145
    • A method for adjusting a common voltage of an LCD device includes providing an LCD device and a photodetector, obtaining variable parameters Ya, Yb and Yc, the variable parameters Ya, Yb and Yc respectively denoting flicker intensity of the LCD device when the common voltages are parameters Va, Vb and Vc, Vb exceed Va, and is less than Vc, when Yb exceeds Yc and is less than Ya, increasing the parameters Va, Vb and Vc respectively and repeating the two steps, when Yb exceeds Ya and is less than Yc, decreasing the parameters Va, Vb and Vc respectively and repeating the two steps, and when Yb is less than or equals Ya and is less than or equals Yc, setting an arbitrary value between Va and Vc as an optimum common voltage of the LCD device.
    • 一种用于调节LCD装置的公共电压的方法包括:提供LCD装置和光电检测器,获得可变参数Ya,Yb和Yc,分别表示当公用电压为LCD时的LCD装置的闪烁强度的可变参数Ya,Yb和Yc 参数Va,Vb和Vc,Vb超过Va,当Yb超过Yc且小于Ya时小于Vc,分别增加参数Va,Vb和Vc,并重复两个步骤,当Yb超过Ya并且小于 Yc分别减小参数Va,Vb和Vc并重复两个步骤,当Yb小于或等于Ya且小于或等于Yc时,将Va和Vc之间的任意值设置为LCD的最佳公共电压 设备。
    • 4. 发明申请
    • Liquid crystal display having control circuit for delay gradation voltages and driving method thereof
    • 具有用于延迟灰度电压的控制电路的液晶显示器及其驱动方法
    • US20080129722A1
    • 2008-06-05
    • US11999102
    • 2007-12-03
    • Xiao-Jing QiYuan Li
    • Xiao-Jing QiYuan Li
    • G06F3/038
    • G09G3/3688G09G3/2011G09G2320/0233
    • An exemplary liquid crystal display (LCD) (200) includes an LCD panel having a plurality of display regions (240) arranged sequentially; a plurality of gate driving circuit (250) respectively connected to the display regions for providing scan signal to scanning the display region; at least a data driving circuit (230) for generating gradation voltages and providing the gradation voltages to the corresponding scanned display region; and a delay control circuit connected between the data driving circuit and the display regions for delaying the gradation voltages provided to each display region. The sum of the first delay value generated by the delay control circuit when the gradation voltages are applied to one of the display regions and the second delay value of the same gradation voltages being generated when the gradation voltages are transmitted from the gate driving circuit to the same one of the display regions is approximately constant for all of the display regions.
    • 示例性液晶显示器(LCD)(200)包括具有顺序布置的多个显示区域(240)的LCD面板; 分别连接到显示区域的多个栅极驱动电路(250),用于提供扫描信号以扫描显示区域; 至少一个用于产生灰度电压并将灰度电压提供给相应扫描的显示区域的数据驱动电路(230) 以及延迟控制电路,连接在数据驱动电路和显示区域之间,用于延迟提供给每个显示区域的灰度电压。 当灰度电压被施加到一个显示区域时由延迟控制电路产生的第一延迟值和当灰度电压从栅极驱动电路传输到相同灰度电压时产生的第二延迟值的总和 对于所有显示区域,相同的一个显示区域近似恒定。
    • 5. 发明申请
    • Power supply switching circuit capable of voltage regulation and flat panel display using same
    • 电源开关电路采用电压调节和平板显示
    • US20080106543A1
    • 2008-05-08
    • US11982862
    • 2007-11-05
    • Jia-Hui TuTong Zhou
    • Jia-Hui TuTong Zhou
    • G09G5/00G05F1/10G05F1/44
    • G05F1/56G09G3/36
    • An exemplary power supply switching circuit (200) includes a first input (210) for receiving a first signal, a second input (220) for receiving a second signal, a voltage regulating circuit (240), and a signal switching circuit (250). The voltage regulating circuit includes semiconductor elements (241) electrically coupled in series. The signal switching circuit includes a first input terminal (253), a second input terminal (254), and an output terminal (255). The first input is electrically coupled to the first input terminal via the first voltage regulating circuit, the second input is electrically coupled to the second input terminal, and the output terminal is configured to be an output of the power supply switching circuit. The first voltage regulating circuit regulates the first signal via the voltage drops of the first semiconductor elements. A flat panel display using the power supply switching circuit is also provided.
    • 示例性电源开关电路(200)包括用于接收第一信号的第一输入端(210),用于接收第二信号的第二输入端(220),电压调节电路(240)和信号切换电路(250) 。 电压调节电路包括串联电耦合的半导体元件(241)。 信号切换电路包括第一输入端(253),第二输入端(254)和输出端(255)。 第一输入经由第一电压调节电路电耦合到第一输入端,第二输入电耦合到第二输入端,输出端被配置为电源开关电路的输出。 第一电压调节电路通过第一半导体元件的电压降调节第一信号。 还提供了使用电源开关电路的平板显示器。
    • 7. 发明申请
    • Voltage stabilizing circuit with constant current circuit
    • 恒流电路稳压电路
    • US20080088285A1
    • 2008-04-17
    • US11974126
    • 2007-10-11
    • Tong ZhouJia-Hui Tu
    • Tong ZhouJia-Hui Tu
    • G05F1/44G05F1/10
    • G05F1/56
    • An exemplary voltage stabilizing circuit (2) includes a voltage input port (20), a voltage output port (21), a first transistor (22), a constant current circuit (23), and a feedback control circuit (24). The first transistor has a first base (221), a first emitter (222) connected to the output port, and a first collector (223) connected to the input port. The feedback control circuit has a resistor (244), a branch circuit (245-247), a voltage stabilizing unit (242), and a second transistor (241). The second transistor has a second emitter (2412) connected to ground via the voltage stabilizing unit and connected to the output port, a second collector (2413) connected to the first base of the first transistor, and a second base (2411) connected to the branch circuit. The constant current circuit provides current to the first base of the first transistor and the second collector of the second transistor.
    • 示例性电压稳定电路(2)包括电压输入端口(20),电压输出端口(21),第一晶体管(22),恒流电路(23)和反馈控制电路(24)。 第一晶体管具有第一基极(221),连接到输出端口的第一发射极(222)和连接到输入端口的第一集电极(223)。 反馈控制电路具有电阻(244),分支电路(245〜247),稳压单元(242)和第二晶体管(241)。 第二晶体管具有经由电压稳定单元连接到地并连接到输出端口的第二发射极(2412),连接到第一晶体管的第一基极的第二集电极(2413)和连接到第一晶体管的第二基极(2411) 分支电路。 恒流电路向第一晶体管的第一基极和第二晶体管的第二集电极提供电流。
    • 8. 发明申请
    • Power switching circuit and liquid crystal display using same
    • 电源开关电路和液晶显示器使用相同
    • US20080037186A1
    • 2008-02-14
    • US11891796
    • 2007-08-13
    • Hua XiaoTong Zhou
    • Hua XiaoTong Zhou
    • G05F1/569G02F1/1333
    • G02F1/13306Y10T307/747Y10T307/858Y10T307/911Y10T307/937
    • An exemplary LCD (2) includes a control signal input terminal (210) configured for receiving a control signal; an output terminal (220) configured to be connected to a load circuit; a first direct current (DC) power supply (230); a first switching transistor (250) including a control electrode “b” connected to the control signal input terminal, a first current conducting electrode “c” connected to the DC power supply via a first bias resistor, and a second current conducting electrode “e” connected to ground; a second switching transistor (250) including a control electrode “G” connected to the first current conducting electrode of the first switching transistor, a first current conducting electrode “S” connected to the DC power supply, and a second current conducting electrode “D” connected to the output terminal; and a discharging resistor (225) configured to be connected between the output terminal and ground.
    • 示例性LCD(2)包括被配置为接收控制信号的控制信号输入端(210) 被配置为连接到负载电路的输出端子(220); 第一直流(DC)电源(230); 包括连接到控制信号输入端子的控制电极“b”的第一开关晶体管(250),经由第一偏置电阻器连接到直流电源的第一导电电极“c”和第二导电电极“e” “连接到地面; 包括连接到第一开关晶体管的第一导电电极的控制电极“G”的第二开关晶体管(250),连接到直流电源的第一导电电极“S”和第二导电电极“D” “连接到输出端子; 以及配置为连接在输出端子和地之间的放电电阻器(225)。
    • 9. 发明申请
    • Voltage regulating circuit having voltage stabilizing circuits
    • 电压调节电路具有稳压电路
    • US20080036441A1
    • 2008-02-14
    • US11891798
    • 2007-08-13
    • Huai Du
    • Huai Du
    • G05F3/08
    • H02M3/005
    • An exemplary voltage regulating circuit (20) includes a voltage modulating unit (22, 24) and a voltage-dividing unit (26). The voltage-dividing unit includes a voltage divider (27) and at least one voltage stabilizing circuit (28) electrically coupled to the voltage divider. The voltage modulating unit transforms an input voltage to an operation voltage. The voltage divider divides the operation voltage into a plurality of sub-voltages, the at least one voltage stabilizing circuit stabilizes a corresponding one of the sub-voltages at a desired value, and the at least one voltage stabilizing circuit outputs the stabilized voltage.
    • 示例性电压调节电路(20)包括电压调制单元(22,24)和分压单元(26)。 分压单元包括分压器(27)和至少一个电耦合到分压器的稳压电路(28)。 电压调制单元将输入电压变换为工作电压。 所述分压器将所述工作电压分压为多个子电压,所述至少一个稳压电路使相应的一个所述子电压稳定在期望值,并且所述至少一个稳压电路输出所述稳定电压。