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    • 4. 发明授权
    • Shift register and image display device
    • 移位寄存器和图像显示设备
    • US07212184B2
    • 2007-05-01
    • US10800352
    • 2004-03-12
    • Hajime WashioYasushi KubotaKazuhiro MaedaYasuyoshi KaiseMichael James BrownlowGraham Andrew Cairns
    • Hajime WashioYasushi KubotaKazuhiro MaedaYasuyoshi KaiseMichael James BrownlowGraham Andrew Cairns
    • G09G3/36
    • G09G3/3677G09G3/3688G09G2310/0289
    • In a shift register provided with flip-flops that operate in synchronism with a clock signal, and a switching means, which is opened and closed in response to an output of the preceding stage of each of the flip-flops, is installed. The clock signal is selectively inputted by the switching means, and the selected clock signal is inverted and used as a shift register output from each of the stages. Moreover, two kinds of clock signals, each of which has a duty ratio of not more than 50% and which have no overlapped portions in their low-level periods, are used so as to prevent the outputs of the shift-register from overlapping each other. Thus, it is possible to provide a shift register which is preferably used for a driving circuit of an image display device, can miniaturize the driving circuit, and can desirably change the pulse width of the output signal, and also to provide an image display device using such a shift register.
    • 在设置有与时钟信号同步工作的触发器的移位寄存器中,并且响应于每个触发器的前级的输出而被打开和关闭的开关装置被安装。 时钟信号由切换装置选择性地输入,所选择的时钟信号被反相并用作从每个级输出的移位寄存器。 此外,使用两种时钟信号,每个时钟信号的占空比不大于50%,并且在其低电平时段中没有重叠部分,以便防止移位寄存器的输出与每个 其他。 因此,可以提供优选用于图像显示装置的驱动电路的移位寄存器,可以使驱动电路小型化,并且可以期望地改变输出信号的脉冲宽度,并且还提供图像显示装置 使用这种移位寄存器。
    • 9. 发明授权
    • Image display device and display driving method
    • 图像显示装置和显示驱动方法
    • US06940500B2
    • 2005-09-06
    • US10252497
    • 2002-09-23
    • Hajime WashioYasuyoshi KaiseKazuhiro MaedaYasushi Kubota
    • Hajime WashioYasuyoshi KaiseKazuhiro MaedaYasushi Kubota
    • G02F1/133G09G3/20G09G3/36G09G5/00
    • G09G3/3648G09G3/3688G09G2310/0248G09G2330/021
    • A potential of a data signal line S during a scanning period is charged to a substantially intermediate potential of a data signal at a corresponding frame. Thus, extremely large dispersion does not occur in a potential of each pixel capacitor with respect to a potential of the data signal line S, so that it is possible to restrict dispersion of a leak current flowing via an active element of each pixel. Thus, potential variation of a pixel PIX is reduced, so that it is possible to improve display quality during a non-scanning period. That is, in an active-matrix-type liquid crystal display, when a frame frequency is reduced by setting the non-scanning period to be sufficiently larger than a scanning period while a standby image is being displayed so as to realize low power consumption, the display quality is improved.
    • 扫描周期期间的数据信号线S的电位被充电到相应帧的数据信号的大致中间电位。 因此,相对于数据信号线S的电位,每个像素电容器的电位不会发生极大的色散,从而可以限制流过每个像素的有源元件的漏电流的色散。 因此,像素PIX的电位变化减小,使得可以在非扫描期间提高显示质量。 也就是说,在有源矩阵型液晶显示器中,当通过在显示待机图像的同时将非扫描周期设置为比扫描周期充分大来降低帧频,从而实现低功耗, 显示质量得到提高。