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    • 8. 发明授权
    • Power supply voltage converting circuit, method for controlling the same, display device, and mobile terminal
    • 电源电压转换电路,其控制方法,显示装置和移动终端
    • US07821511B2
    • 2010-10-26
    • US10557799
    • 2004-05-14
    • Yoshiharu NakajimaYoshitoshi Kida
    • Yoshiharu NakajimaYoshitoshi Kida
    • G09G5/00
    • H02M3/073H02M2003/076
    • A supply voltage conversion circuit allowing fabrication of a charge pump circuit having a large current capability with a small area is provided. In a charge pump DC-DC converter (10) for converting a supply voltage VDD1 to a supply voltage VDD2, a level shifter (12) implements amplitude conversion to convert from a control pulse with amplitude of VSS-VDD1 to a control pulse with amplitude of VSS-VDD2. By using the control pulse having the converted amplitude as a pumping pulse, a flying capacitor (C11) is charged/discharged by MOS transistors (Qp11), and (Qn11) of a charge pump circuit (11), and switching of MOS transistors (Qn12), and (Qp12) coupled to the output of the flying capacitor (C11) is controlled.
    • 提供了允许制造具有小面积的具有大电流能力的电荷泵电路的电源电压转换电路。 在用于将电源电压VDD1转换为电源电压VDD2的电荷泵DC-DC转换器(10)中,电平转换器(12)进行幅度转换,以将具有振幅为VSS-VDD1的控制脉冲转换成具有振幅的控制脉冲 的VSS-VDD2。 通过使用具有转换幅度的控制脉冲作为泵浦脉冲,由电荷泵电路(11)的MOS晶体管(Qp11)和(Qn11)对浮动电容器(C11)进行充电/放电,以及MOS晶体管 Qn12)和耦合到飞跨电容器(C11)的输出的(Qp12)。
    • 9. 发明申请
    • Oscillation Circuit, Power Supply Circuit, Display Device, and Electronic Apparatus
    • 振荡电路,电源电路,显示设备和电子设备
    • US20090002083A1
    • 2009-01-01
    • US12087273
    • 2007-01-19
    • Yusuke TakahashiYoshitoshi KidaYoshiharu Nakajima
    • Yusuke TakahashiYoshitoshi KidaYoshiharu Nakajima
    • H03L7/00G06F3/038
    • H03K3/0315G09G3/3648G09G3/3688G09G2300/0439H03K3/84H03K2005/00247
    • An oscillation circuit, power supply circuit, display device using same, and electronic apparatus which can be built in a display panel without causing an increase of cost and do not need any adjustment work, each having a pulse generation portion 161 formed by an oscillator outputting rectangular wave signals having a frequency variation and a frequency variation correction portion 162 for suppressing output rectangular waves of the pulse generation portion 161 within a certain frequency range and outputting the same to a boosting circuit 163, wherein the frequency variation correction portion 162 includes an input pulse counter 1621 having n number of counters cascade connected and counting numbers of high level and low level periods of rectangular waves input from the pulse generation portion within a comparison input period, a counter value comparison circuit 1622 for generating a selection signal for selecting a last output from any counter among the cascade connected counters when the input pulse counter counts any number, and an output selection circuit 1623 for receiving the selection signal and outputting a corresponding counter value.
    • 振荡电路,电源电路,使用它的显示装置以及可以内置在显示面板中而不引起成本增加并且不需要任何调整工作的电子设备,每个都具有由振荡器输出形成的脉冲产生部分161 具有频率变化的矩形波信号和频率变化校正部分162,用于在一定频率范围内抑制脉冲发生部分161的输出矩形波并将其输出到升压电路163,其中频率变化校正部分162包括输入 脉冲计数器1621,其具有在比较输入周期内从脉冲产生部分输入的n个级联的计数器级联连接和计数的高电平和低电平周期的矩形波;计数器值比较电路1622,用于产生用于选择最后一个 从串联连接的计数器之间的任何计数器输出 n输入脉冲计数器对任何数量进行计数,以及输出选择电路1623,用于接收选择信号并输出​​相应的计数器值。
    • 10. 发明申请
    • Liquid crystal display device, method of controlling the same, and mobile terminal
    • 液晶显示装置,其控制方法和移动终端
    • US20070195038A1
    • 2007-08-23
    • US11789279
    • 2007-04-23
    • Yoshitoshi KidaYoshiharu NakajimaToshikazu Maekawa
    • Yoshitoshi KidaYoshiharu NakajimaToshikazu Maekawa
    • G09G3/36
    • G09G3/3648G09G3/3655G09G3/3688G09G2300/0876G09G2310/0245G09G2310/027G09G2310/06G09G2310/063G09G2320/0204G09G2320/0219G09G2320/0257G09G2330/026G09G2330/027
    • A liquid crystal display device enabling a reduction in size and costs associated with the system as a whole, starting to display images without image distortion at power on time, and turning the screen off without image retention at power off time, a method of controlling the liquid crystal display device, and a mobile terminal incorporating the liquid crystal display device as a screen display. On a glass substrate (11) provided with a display unit (12), peripheral drive circuits such as an interface circuit (13), a timing generator (14), a reference voltage driver (15), a CS driver (18), a VCOM driver (19), and a voltage regulation circuit (20), together with a horizontal driver (16) and a vertical driver (17) are disposed. When a display reset control pulse PCI is supplied from an external source, a predetermined voltage is written into pixels while a CS voltage and a VCOM voltage adjusted to the same level as that of a pixel voltage are applied to a common-electrode-side. This allows the screen to turn white in a normally white type liquid crystal display, and to turn black in a normally black type liquid crystal display. Image distortion at power on/off time can thus be prevented.
    • 一种液晶显示装置,其能够与整个系统相关联地减小尺寸和成本,开始显示在通电时间没有图像失真的图像,并且在断电时关闭屏幕而不进行图像保持;控制方法 液晶显示装置和结合有液晶显示装置的移动终端作为画面显示。 在设置有显示单元(12)的玻璃基板(11)上,诸如接口电路(13),定时发生器(14),参考电压驱动器(15),CS驱动器(18), 设置VCOM驱动器(19)和电压调节电路(20)以及水平驱动器(16)和垂直驱动器(17)。 当从外部源提供显示复位控制脉冲PCI时,将预定电压写入像素,同时将CS电压和VCOM电压调整到与像素电压相同的电平施加到共电极侧。 这允许屏幕在普通白色液晶显示器中变为白色,并且在常黑型液晶显示器中变黑。 因此可以防止电源开/关时的图像失真。