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    • 6. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE AND ITS DRIVE METHOD
    • 液晶显示装置及其驱动方法
    • US20090190050A1
    • 2009-07-30
    • US12416785
    • 2009-04-01
    • Katsufumi OhmuroArihiro TakedaHideo ChidaKimiaki NakamuraYoshio Koike
    • Katsufumi OhmuroArihiro TakedaHideo ChidaKimiaki NakamuraYoshio Koike
    • G02F1/133G02F1/13363G09G3/36
    • G02F1/1393G02F1/134336G09G3/3648G09G2310/06G09G2320/0252G09G2320/041G09G2340/16
    • A MVA type liquid crystal panel is slow in a response speed when a black state at a drive voltage about 1V is switched to a low brightness halftone state at the drive voltage about 2 to 3V. According to the present invention, in a liquid crystal display device for driving the MVA type liquid crystal panel, when a liquid crystal pixel at a pixel electrode is changed from a first transmittance to a second transmittance greater than the first transmittance, a drive voltage greater than a fist target drive voltage in correspondence with a second transmittance is applied to the pixel electrode in a first frame period of changing to the second transmittance, and the first target display voltage is applied from a second frame period. According to the present invention, even when either switching is performed from a black state to a low brightness halftone state, from the black state to a high brightness halftone state, for from the black state to a white state, a response time is shortened, and the switching can be performed without generating an overshoot.
    • 当驱动电压约为1V的黑色状态在大约2V至3V的驱动电压下切换到低亮度半色调状态时,MVA型液晶面板响应速度慢。 根据本发明,在用于驱动MVA型液晶面板的液晶显示装置中,当像素电极的液晶像素从第一透射率变化到大于第一透射率的第二透射率时,驱动电压越大 在与第二透射率相关的第一帧周期中将与第二透射率相对应的第一目标驱动电压施加到像素电极,并且从第二帧周期施加第一目标显示电压。 根据本发明,即使从黑色状态到低亮度半色调状态进行任何切换,从黑色状态到高亮度半色调状态,从黑色状态到白色状态,响应时间缩短, 并且可以执行切换而不产生过冲。
    • 7. 发明授权
    • Liquid crystal display device operating in a vertically aligned mode
    • 液晶显示装置以垂直对准的方式工作
    • US07548294B2
    • 2009-06-16
    • US12101570
    • 2008-04-11
    • Katsufumi OhmuroYoshio KoikeTakahiro SasakiHideaki TsudaHideo Chida
    • Katsufumi OhmuroYoshio KoikeTakahiro SasakiHideaki TsudaHideo Chida
    • G02F1/1335
    • G02F1/133634G02F1/13363G02F1/134363G02F1/1393
    • A liquid crystal display device includes a first substrate and a second substrate sandwiching a liquid crystal layer therebetween, a first polarizer disposed adjacent to the first substrate at a side opposite to a side of the first polarizer facing the liquid crystal layer, with a first gap between the first polarizer and the first substrate, a second polarizer disposed adjacent to the second substrate at a side opposite to a side of the second polarizer facing the liquid crystal layer, with a second gap between the second polarizer and the second substrate, wherein at least one of the first and second gaps includes therein a first retardation film having a positive optical anisotropy and a second retardation film having a negative optical anisotropy, such that the first retardation film is disposed closer to the liquid crystal layer with respect to the second retardation film.
    • 液晶显示装置包括:第一基板和夹在其间的液晶层的第二基板;第一偏振片,与第一基板相邻设置在与第一偏振片面对液晶层相反的一侧,第一间隙 在第一偏振器和第一基板之间,在与第二偏振器面对液晶层的一侧相对的一侧与第二基板相邻设置的第二偏振器,在第二偏光器和第二基板之间具有第二间隙,其中在 第一和第二间隙中的至少一个间隙包括具有正光学各向异性的第一延迟膜和具有负光学各向异性的第二延迟膜,使得第一延迟膜相对于第二延迟更靠近液晶层设置 电影。