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    • 54. 发明申请
    • SIGNAL GENERATOR CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE
    • 信号发生器电路,液晶显示装置
    • US20130100105A1
    • 2013-04-25
    • US13806878
    • 2011-06-23
    • Shige FurutaMakoto YokoyamaYuhichiroh MurakamiYasushi Sasaki
    • Shige FurutaMakoto YokoyamaYuhichiroh MurakamiYasushi Sasaki
    • G09G3/36
    • G09G3/3674G09G3/3614G09G3/3648G09G3/3655G09G3/3677
    • A signal generator circuit of the present invention is a signal generator circuit for use in a display device, the display device including (a) a pixel having a pixel electrode, (b) an electric conductor with which the pixel electrode forms a capacitor, (c) a data signal line driving circuit which outputs a data signal whose polarity is reversed for each n horizontal scanning period(s), where n is a natural number, and (d) a scanning signal line driving circuit which outputs scanning signals corresponding to respective stages, said signal generator circuit generating a drive signal supplied to the electric conductor, wherein: said signal generator circuit comprises flip flops corresponding to the respective stages, each flip flop including a gate circuit and a latch circuit; and in regard to one flip flop corresponding to one of the stages, (i) the gate circuit is supplied with a signal synchronized with a scanning signal corresponding to a preceding stage of the one of the stages, and a signal synchronized with a scanning signal corresponding to a subsequent stage of the one of the stages, (ii) the latch circuit is supplied with a polarity signal whose polarity is reversed for each n horizontal scanning period(s) via the gate circuit, and (iii) the drive signal of the one of the stages is generated in accordance with an output of the one flip flop. With the arrangement, it is possible to provide, with use of a simple configuration, a driver circuit for use in a liquid crystal display device which carries out CC (charge coupling) driving or COM driving.
    • 本发明的信号发生器电路是用于显示装置的信号发生器电路,该显示装置包括:(a)具有像素电极的像素,(b)像素电极与电容器形成的电导体; c)数据信号线驱动电路,其输出对于每个n个水平扫描周期的极性反转的数据信号,其中n是自然数,以及(d)扫描信号线驱动电路,其输出与 所述信号发生器电路产生提供给所述电导体的驱动信号,其中:所述信号发生器电路包括对应于各个级的触发器,每个触发器包括门电路和锁存电路; 并且对于与其中一个级相对应的一个触发器,(i)门电路被提供与与该级中的一级的前级相对应的扫描信号同步的信号,以及与扫描信号同步的信号 对应于所述一级的后续级,(ii)锁存电路经由门电路为每个n个水平扫描周期极性反转极性信号,以及(iii)驱动信号 根据一个触发器的输出产生一个级。 通过这种布置,可以使用简单的配置来提供用于执行CC(电荷耦合)驱动或COM驱动的液晶显示装置中的驱动电路。
    • 60. 发明申请
    • POWER SUPPLY CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME
    • 电源电路和包括其的显示装置
    • US20100259529A1
    • 2010-10-14
    • US12734394
    • 2008-09-01
    • Shuji NishiSachio TsujinoYuhichiroh MurakamiYasushi SasakiSeijirou Gyouten
    • Shuji NishiSachio TsujinoYuhichiroh MurakamiYasushi SasakiSeijirou Gyouten
    • G09G5/00G05F3/24
    • H02M3/073H02M2003/077
    • An embodiment of the present invention provides a power supply circuit including a charge-pumping booster section which uses switching elements provided only by N-channel transistors yet does not have a problem of voltage drop by threshold value. When a boosted voltage is obtained at a first terminal of a first capacitor in a booster section, a booster control section supplies this boosted voltage to a third capacitor, to boost the voltage further thereby turning ON a first transistor. When a boosted voltage is obtained at a first terminal of a second capacitor in the booster section, the booster control section supplies this boosted voltage to a fourth capacitor, to boost the voltage further thereby turning ON a second transistor. This arrangement eliminates a problem of voltage drop by threshold value in the first and the second transistors which serve as output-side switching elements.
    • 本发明的一个实施例提供一种电源电路,其包括使用仅由N沟道晶体管提供的开关元件的电荷泵浦升压器部分,但不具有通过阈值的电压降的问题。 当在升压部中的第一电容器的第一端获得升压电压时,升压控制部将该升压电压提供给第三电容器,进一步升高电压,从而导通第一晶体管。 当在升压部中的第二电容器的第一端获得升压电压时,升压控制部将该升压电压提供给第四电容器,进一步升压电压,从而导通第二晶体管。 这种布置消除了用作输出侧开关元件的第一和第二晶体管中的阈值电压下降的问题。