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    • 2. 发明申请
    • LEVEL SHIFTER USING LATCH CIRCUIT AND DRIVING CIRCUIT INCLUDING THE SAME IN DISPLAY DEVICE
    • 在显示设备中使用锁存电路和驱动电路的电平变换器
    • US20090295770A1
    • 2009-12-03
    • US12468115
    • 2009-05-19
    • Jae Hyuck WOOJae Goo LEE
    • Jae Hyuck WOOJae Goo LEE
    • G09G5/00H03K19/0175
    • G09G3/20G09G2310/0275G09G2310/0289H03K3/356104
    • A level shifter includes a switching unit, a power supply circuit, and a latch circuit. The switching unit selectively outputs an input signal to a first output terminal in response to a first control signal. The power supply circuit generates a variable voltage, which changes when level shifting is performed, in response to a plurality of second control signals. The latch circuit performs the level shifting in response to the input signal selectively output by the switching unit and the variable voltage. Since the level shifter can perform level shifting using the latch circuit, it can be made in compact size and it operates with low power. Also, the level shifter sets the transition periods of the first control signal and the variable voltage not to overlap each other, thereby decreasing signal distortion.
    • 电平移位器包括开关单元,电源电路和锁存电路。 开关单元响应于第一控制信号有选择地将输入信号输出到第一输出端。 电源电路响应于多个第二控制信号而产生在执行电平移位时改变的可变电压。 锁存电路响应于由开关单元选择性地输出的输入信号和可变电压来执行电平移位。 由于电平移位器可以使用锁存电路进行电平转换,所以可以制造成紧凑的尺寸并以低功率工作。 此外,电平移位器将第一控制信号和可变电压的转变周期设置为不彼此重叠,从而减少信号失真。