Method of driving an active matrix type liquid crystal display

    公开(公告)号:US5790089A

    公开(公告)日:1998-08-04

    申请号:US479020

    申请日:1995-06-07

    IPC分类号: G09G3/20 G09G3/36

    摘要: In a method for driving an active matrix type liquid crystal display device having a liquid crystal panel having the structure that a set of liquid crystal layers and two-terminal active layers are connected in series between a set of column electrodes and a set of row electrodes, a display operation being carried out by applying a difference signal between each column electrode and each row electrode, the difference signal is set so as to have a voltage having an inverse characteristic to the I-V characteristic of the two-terminal active element and is applied between the column and row electrodes to thereby depress occurrence of flicker. In addition, within a period except for a selection period for which an actual display operation is carried out in the liquid crystal panel, the difference signal having amplitude voltage equal to or above the maximum amplitude voltage set for the display operation is applied between the column and row electrode sets for a predetermined period to thereby prevent degradation of display quality due to the shift characteristic of the two-terminal active element which has been driven, and due to the asymmetry of the voltage-current characteristic of the two-terminal active element between the positive and negative polarity regions thereof.

    Nonlinear resistance element and fabrication method thereof in which
tungsten atoms are distributed continuously within the insulating film
    2.
    发明授权
    Nonlinear resistance element and fabrication method thereof in which tungsten atoms are distributed continuously within the insulating film 失效
    其中钨原子在绝缘膜内连续分布的非线性电阻元件及其制造方法

    公开(公告)号:US5781256A

    公开(公告)日:1998-07-14

    申请号:US716175

    申请日:1996-09-23

    CPC分类号: H01L45/00 G02F1/1365

    摘要: The method of fabricating a nonlinear resistance element includes the steps of: forming on a substrate a first conductive film having tantalum as a main component to which is added tungsten; forming an insulating film on the first conductive film by anodization of the first conductive film, using an electrolyte comprising tungstic acid ions and under conditions by which the pH of the electrolyte is conditioned in accordance with the tungsten concentration within the first conductive film; and forming a second conductive film on the insulating film. The "polarity difference" of the nonlinear resistance element varies with the tungsten concentration in the first conductive film, and it also varies with the pH of the electrolyte, even when the tungsten concentration is the same. Therefore, the "polarity difference" can be set to substantially zero by regulating the tungsten concentration within the first metal film and by setting the pH of the electrolyte that is used in the anodization to match this tungsten concentration. An aqueous solution of ammonium tungstate is preferably used as the electrolyte for the anodization and ammonia is preferably used as the pH conditioner.

    摘要翻译: PCT No.PCT / JP96 / 00113 Sec。 371日期1996年9月23日 102(e)1996年9月23日PCT PCT 1996年1月23日PCT公布。 公开号WO96 / 23246 日期:1996年8月1日制造非线性电阻元件的方法包括以下步骤:在基板上形成具有钽作为添加钨的主要成分的第一导电膜; 通过阳极氧化第一导电膜,使用包含钨酸离子的电解质和在电解质的pH根据第一导电膜内的钨浓度调节的条件下,在第一导电膜上形成绝缘膜; 以及在所述绝缘膜上形成第二导电膜。 非线性电阻元件的“极性差”随着第一导电膜中的钨浓度而变化,并且即使当钨浓度相同时也随电解质的pH而变化。 因此,通过调节第一金属膜中的钨浓度和通过使用于阳极氧化处理的电解质的pH来匹配该钨浓度,可将“极性差”设定为基本为零。 优选使用钨酸铵的水溶液作为阳极氧化用电解质,优选使用氨作为pH调节剂。

    Method of driving an active matrix type liquid crystal display
    3.
    发明授权
    Method of driving an active matrix type liquid crystal display 失效
    驱动有源矩阵型液晶显示器的方法

    公开(公告)号:US5526013A

    公开(公告)日:1996-06-11

    申请号:US294878

    申请日:1994-08-23

    IPC分类号: G09G3/20 G09G3/36

    摘要: In a method for driving an active matrix type liquid crystal display device having a liquid crystal panel having the structure that a set of liquid crystal layers and two-terminal active layers are connected in series between a set of column electrodes and a set of row electrodes, a display operation being carried out by applying a difference signal between each column electrode and each row electrode, the difference signal is set so as to have a voltage having an inverse characteristic to the I-V characteristic of the two-terminal active element and is applied between the column and row electrodes to thereby depress occurrence of flicker. In addition, within a period except for a selection period for which an actual display operation is carried out in the liquid crystal panel, the difference signal having amplitude voltage equal to or above the maximum amplitude voltage set for the display operation is applied between the column and row electrode sets for a predetermined period to thereby prevent degradation of display quality due to the shift characteristic of the two-terminal active element which has been driven, and due to the asymmetry of the voltage-current characteristic of the two-terminal active element between the positive and negative polarity regions thereof.

    摘要翻译: 在具有液晶面板的有源矩阵型液晶显示装置的驱动方法中,具有将一组液晶层和两端活性层串联连接在一组列电极和一组行电极之间的结构 ,通过在每个列电极和每个行电极之间施加差分信号来执行显示操作,将差分信号设置为具有与两端有源元件的IV特性具有相反特性的电压并被施加 在列和行电极之间,从而抑制闪烁的发生。 此外,除了在液晶面板中进行实际显示操作的选择期间外,在列之间施加具有等于或高于为显示操作设定的最大幅度电压的振幅电压的差分信号 和行电极组,从而防止由驱动的两端有源元件的偏移特性导致的显示质量的劣化,并且由于两端子有源元件的电压 - 电流特性的不对称性 在其正极性区域和负极性区域之间。