WO2013139149A1 - 液晶显示器驱动电路、液晶显示器及其驱动方法 - Google Patents

液晶显示器驱动电路、液晶显示器及其驱动方法 Download PDF

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Publication number
WO2013139149A1
WO2013139149A1 PCT/CN2012/086707 CN2012086707W WO2013139149A1 WO 2013139149 A1 WO2013139149 A1 WO 2013139149A1 CN 2012086707 W CN2012086707 W CN 2012086707W WO 2013139149 A1 WO2013139149 A1 WO 2013139149A1
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Prior art keywords
common electrode
liquid crystal
potential
crystal display
common
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PCT/CN2012/086707
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English (en)
French (fr)
Inventor
张玉婷
吕敬
彭宽军
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京东方科技集团股份有限公司
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Publication of WO2013139149A1 publication Critical patent/WO2013139149A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • Liquid crystal display driving circuit liquid crystal display and driving method thereof
  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a liquid crystal display driving circuit, a liquid crystal display, and a driving method thereof, which combine dot inversion and common electrode potential variation. Background technique
  • a conventional liquid crystal display includes an array substrate, a color filter substrate, and a liquid crystal layer filled between the two substrates, and further includes a pixel electrode and a common electrode, the pixel electrode is disposed on the array substrate, and the common electrode is disposed on the array substrate and/or Or on the color filter substrate, the liquid crystal molecules are deflected by the electric field between the pixel electrode and the common electrode. In order to prevent the properties of the liquid crystal molecules from being destroyed, the liquid crystal molecules cannot be fixed at a certain turning constant.
  • the voltage between the pixel electrode and the common electrode in the liquid crystal display is divided into two polarities, one is positive polarity and the other is negative polarity.
  • the potential of the pixel electrode When the potential of the pixel electrode is higher than the potential of the common electrode, it is called positive polarity, and conversely, it is negative polarity. Whether it is positive polarity or negative polarity, there will be a set of gray levels of the same brightness. Therefore, when the absolute value of the voltage difference between the pixel electrode and the common electrode is fixed, whether the pixel electrode potential is high or the common electrode potential is high, the gray scale expressed is exactly the same, and the liquid crystal molecules turn oppositely, thereby avoiding The liquid crystal molecules turn to the characteristic damage caused by the fixation in one direction.
  • a liquid crystal panel having a main conversion scheme four different polarities, frame inversion (frame inversion), line inversion (row inversion), inversion bad 1 J (column inversion), and dot inversion (dot inversion).
  • frame inversion frame inversion
  • line inversion row inversion
  • inversion bad 1 J column inversion
  • dot inversion dot inversion
  • Fig. 1 shows the transmittance in a conventional liquid crystal display in a driving mode in which the common electrode potential is fixed.
  • the solid line indicates the potential of the pixel electrode at the time of positive polarity
  • the broken line indicates the potential of the pixel electrode at the time of negative polarity.
  • Fig. 1 shows the relationship between the transmittance and the pixel electrode potential (0 to 10 V) in a conventional liquid crystal display.
  • the technical problem to be solved by the present invention is to provide a liquid crystal display driving circuit, a liquid crystal display and a driving method thereof which have low power consumption and good display effect.
  • the present invention provides a liquid crystal display driving circuit comprising a pixel electrode matrix composed of a plurality of pixel electrodes arranged in a matrix, a plurality of common electrode strips, and respectively connected to the plurality of common electrode strips.
  • each of the common electrode strips includes at least one common electrode.
  • all common electrode strips whose potentials remain the same are electrically connected to each other.
  • the potentials include 0V and 5V.
  • the pixel electrode and the common electrode strip are both indium tin oxide ITO electrodes.
  • the present invention also provides a liquid crystal display comprising the above liquid crystal display driving circuit.
  • the present invention also provides a driving method of the above liquid crystal display, in which a first common potential and a second common potential are respectively input to adjacent first common electrode strips and second common electrode strips at a first timing;
  • the first common electrode strip having the potential of the first common potential is input to the second common potential, and the second common electrode strip having the potential of the second common potential is input to the first common potential.
  • the first common potential is 0V
  • the second common potential is 5V
  • the first common potential is 5V
  • the second common potential is 0V
  • the invention realizes the polarity reversal of the liquid crystal driving voltage by controlling the switching of the potentials on the adjacent common electrode strips, so that the output potential of the source driving can be within the range between the two potentials of the common electrode strip. Variety. Since this structure is used, the dot inversion is achieved, and the potential range of the source driving output is lowered, so that the power consumption of the source driving is reduced, and the picture quality is ensured.
  • 1 is a transmittance in a conventional liquid crystal display in a driving mode in which a common electrode potential is fixed;
  • FIG. 2 is a schematic diagram showing the structure of driving polarity of a liquid crystal display driving circuit according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view showing driving polarities of a liquid crystal display driving circuit according to another embodiment of the present invention.
  • Figure 4 is a diagram showing the transmittance in the driving mode of the common electrode potential in the liquid crystal display driving circuit of the present invention.
  • Fig. 5 is a view showing a change in potential of a source driving in a liquid crystal display including the liquid crystal display driving circuit shown in Fig. 3. detailed description
  • liquid crystal display driving circuit the liquid crystal display and the driving method thereof according to the present invention are described in detail below with reference to the accompanying drawings and the embodiments.
  • a liquid crystal display driving circuit includes: a pixel electrode matrix composed of a plurality of pixel electrodes arranged in a matrix, a plurality of common electrode strips, and a plurality of corresponding respectively connected to the plurality of common electrode strips a common electrode driving circuit, each common electrode strip corresponding to at least one set of pixel electrodes, and each of the pixel electrodes in each set of pixel electrodes is located in the common electrode strip in the plane of the corresponding common electrode strip, each pixel
  • the number of rows and columns of electrodes in the pixel electrode matrix are m and n, respectively, and m+n of each pixel electrode in each group of pixel electrodes is the same.
  • the potential of each common electrode strip is controlled by the common electrode driving circuit to be different from the potential of the adjacent common electrode strip, and the potential of each common electrode strip is changed once every time one frame of the screen is displayed, and the potential is two kinds, preferably 0V and 5V.
  • each of the common electrode strips may include at least one common electrode, and all of the common electrode strips whose potentials remain the same are electrically connected to each other.
  • each common electrode strip corresponds to a group of pixel electrodes
  • the number of common electrodes included in each common electrode strip corresponds to the common electrode strip
  • the number of pixel electrodes is the same
  • the common electrode and the pixel electrode are disposed facing each other
  • m+n of each pixel electrode of each group of pixel electrodes is the same.
  • the m+n of the pixel electrode (not shown) facing the common electrode 1-1 is 13, the m+n of the pixel electrode (not shown) facing the common electrode 1-2 is also 13, and so on.
  • each pixel electrode corresponding to the common electrode on the oblique line 2-1 is 13 , and all the common electrodes on the oblique line 2 - 1 are electrically connected as one common electrode strip.
  • the common electrodes on the oblique line 2-2 are electrically connected to form a common electrode strip, and the common electrode on the oblique line 2-3 is electrically connected as a common electrode strip.
  • the "+" sign and the "-" sign indicate the positive polarity and negative polarity of the voltage between the pixel electrode and the corresponding common electrode, respectively.
  • any two adjacent common electrode strips are different, such that the polarity of the voltage between the pixel electrodes of any two adjacent oblique lines and the corresponding common electrode is opposite, and each frame is displayed by the control of the common electrode driving circuit.
  • the potential of each common electrode strip is changed once, thereby realizing dot inversion.
  • each common electrode strip corresponds to two sets of image strips
  • each common electrode included in the common electrode strip corresponds to two pixel electrodes
  • each common electrode strip The common electrodes are electrically connected by the connecting portion 3 as indicated by a stepped oblique line in the figure.
  • the m+n of the two pixel electrodes corresponding to the common electrode 1-3 are 10 and 11, respectively
  • the m+n of the two pixel electrodes corresponding to the common electrode 1-5 are also respectively
  • a pixel electrode with m+n of 10 is a group
  • a pixel electrode with m+n of 11 is another group, and so on.
  • the "+" sign and the "-" sign respectively indicate the positive polarity and the negative polarity of the voltage between the pixel electrode and the corresponding common electrode, and the potentials of any two adjacent common electrode strips are different, and are controlled by the common electrode driving circuit.
  • the potential of each common electrode strip is changed once every time one frame is displayed, thereby realizing the polarity inversion of the corresponding pixel electrode.
  • the potential variation provided by the source driving of the liquid crystal display including the liquid crystal display driving circuit of the present embodiment is shown, the potential range provided by the source driving is 0-5 V, and the potential of the common electrode strip is 0 V.
  • the liquid crystal driving voltage is positive, when the potential of the common electrode strip is 5V, the liquid crystal driving voltage is negative.
  • the pixel electrode and the common electrode strip in the present invention are preferably both excellent in light transmittance.
  • the present invention also provides a liquid crystal display comprising the above liquid crystal display driving circuit, the liquid crystal display further comprising an array substrate, a color film substrate and a liquid crystal layer filled between the two substrates, the pixel electrodes are disposed on the array substrate, and the common electrode strip is disposed On the array substrate and / or color film substrate.
  • the invention also provides a driving method of the above liquid crystal crystal display:
  • a first time such as an odd frame
  • a second time that is, an even frame
  • the second common potential inputs a first common potential to the common electrode strip whose potential is the second common potential.
  • the first common potential is 0V or 5V
  • the second common potential is 5V or 0V.

Abstract

一种液晶显示器驱动电路、液晶显示器及其驱动方法。液晶显示器驱动电路包括由多个呈矩阵形状排列的像素电极组成的像素电极矩阵、多个公共电极条以及分别与所述多个公共电极条相连的多个公共电极驱动电路。每一公共电极条对应至少一组像素电极，每一组像素电极中的每一像素电极在对应公共电极条所在平面上的正投影位于该公共电极条内。每一像素电极在像素电极矩阵中所处的行数和列数分别为m与n，并且每一组像素电极中的每一像素电极的m+n相同。公共电极驱动电路控制每一公共电极条的电位与相邻公共电极条的电位不同，并且每显示一帧画面，每一公共电极条的电位改变一次，电位有两种。所述液晶显示器驱动电路、液晶显示器及其驱动方法实现了点反转，降低了源极驱动输出的电压范围，使得源极驱动的功耗降低，同时又保证了画面质量。

Description

液晶显示器驱动电路、 液晶显示器及其驱动方法 技术领域
本发明涉及液晶显示器技术领域， 尤其涉及一种点反转和公共电极电位 变动方式结合的液晶显示器驱动电路、 液晶显示器及其驱动方法。 背景技术
传统的液晶显示器包括阵列基板、 彩膜基板、 以及两块基板之间填充的 液晶层， 还包括像素电极以及公共 （Common ) 电极， 像素电极设置在阵列 基板上， 公共电极设置于阵列基板和 /或彩膜基板上， 液晶分子因像素电极与 公共电极之间的电场而发生偏转。 为了避免液晶分子的特性遭到破坏， 液晶 分子不能够一直固定在某一个转向不变。 液晶显示器内的像素电极与公共电 极之间的电压就分为两种极性， 一种是正极性， 另一种是负极性。 当像素电 极的电位高于公共电极电位时， 称之为正极性， 反之， 为负极性。 不管是正 极性还是负极性， 都会有一组相同的亮度的灰阶。 所以当像素电极与公共电 极之间的压差绝对值是固定时，不管是像素电极电位高或是公共电极电位高， 所表现出来的灰阶是一模一样的， 而液晶分子的转向相反， 从而避免液晶分 子转向一直固定在一个方向所造成的特性破坏。
通常， 液晶面板主要具有四种不同极性的变换方式， 帧反转 （frame inversion )、 行反转 ( row inversion )、 歹1 J反转 ( column inversion )、 以及点反 转（ dot inversion )。 对应的公共电极的驱动方式包括两种： 固定不动的以及 变动的。 这两种不同的驱动方式影响最大的就是源极驱动（ Source driver )的 使用。 图 1示出了在传统的液晶显示器中在公共电极电位固定不变的驱动方 式下的穿透率。 如图 1 中所示， 实线表示正极性时像素电极的电位， 虚线表 示负极性时像素电极的电位。 如图 1 所示， 当公共电极的电位为固定为 5V 不变的时候， 源极驱动所提供的工作电位范围就要到 10V以上。 换句话说， 图 1示出了在传统的液晶显示器中穿透率与像素电极电位（0到 10V )之间 的关系。
随着移动设备的广泛引用， 对其显示屏的功耗和画面质量提出了更苛刻 的要求。 常用的显示屏面板极性变换方式大部分为点反转， 因为其显示品质 相对于其它的面板极性变换方式好很多， 但由于使用点反转时， 源极驱动的 耗电量大， 造成面板的整体功耗大。 传统的公共电极电位变动的驱动方式 能适用于帧反转和行反转， 虽然功耗低， 但是显示效果却较差。 发明内容
(一）要解决的技术问题
本发明要解决的技术问题是： 提供一种功耗低， 且显示效果好的液晶显 示器驱动电路、 液晶显示器及其驱动方法。
(二）技术方案
为解决上述问题， 本发明提供了一种液晶显示器驱动电路， 包括由多个 呈矩阵状排列的像素电极组成的像素电极矩阵、 多个公共电极条以及分别与 所述多个公共电极条相连的多个相应的公共电极驱动电路， 每一所述公共电 极条对应至少一组像素电极， 每一组像素电极中的每一所述像素电极在对应 公共电极条所在平面上的正投影位于该公共电极条内， 每一像素电极在像素 电极矩阵中所处的行数和列数分别为 m与 n, 并且每一组像素电极中的每一 像素电极的 m+n相同； 所述公共电极驱动电路控制每一所述公共电极条的电 位与相邻公共电极条的电位不同， 并且每显示一帧画面， 每一所述公共电极 条的电位改变一次， 所述电位有两种。
在一个示例中， 每个所述公共电极条包括至少一个公共电极。
在一个示例中， 所有电位保持相同的公共电极条彼此电连接。
在一个示例中， 所述电位包括 0V和 5V。
在一个示例中，所述像素电极与所述公共电极条均为氧化铟锡 ITO电极。 本发明还提供了一种液晶显示器， 包括上述液晶显示器驱动电路。
本发明还提供了一种上述液晶显示器的驱动方法， 在第一时刻向相邻的 第一公共电极条和第二公共电极条分别输入第一公共电位以及第二公共电 位；在第二时刻向电位为第一公共电位的第一公共电极条输入第二公共电位， 向电位为第二公共电位的第二公共电极条输入第一公共电位。
在一个示例中， 所述第一公共电位为 0V, 第二公共电位为 5V; 或所述 第一公共电位为 5V, 第二公共电位为 0V。
(三）有益效果
本发明通过控制相邻公共电极条上电位的切换， 实现液晶驱动电压的极 性反转， 使得源极驱动的输出电位可在公共电极条的两种电位之间的范围内 变化。 由于釆用了这种结构， 既实现了点反转， 又降低了源极驱动输出的电 位范围， 使得源极驱动的功耗降低， 同时又保证了画面质量。 附图说明
图 1为在传统的液晶显示器中在公共电极电位固定不变的驱动方式下的 穿透率；
图 2为依照本发明一种实施方式的液晶显示器驱动电路的驱动极性的结 构示意图；
图 3为依照本发明另一种实施方式的液晶显示器驱动电路的驱动极性的 结构示意图；
图 4为在本发明的液晶显示器驱动电路中在公共电极电位变动的驱动方 式下的穿透率；
图 5为包括图 3所示的液晶显示器驱动电路的液晶显示器中源极驱动的 电位变化示意图。 具体实施方式
本发明提出的液晶显示器驱动电路、 液晶显示器及其驱动方法， 结合附 图及实施例详细说明如下。
依照本发明一种实施方式的液晶显示器驱动电路包括： 由多个呈矩阵状 排列的像素电极组成的像素电极矩阵、 多个公共电极条以及分别与所述多个 公共电极条相连的多个相应的公共电极驱动电路， 每一公共电极条对应至少 一组像素电极， 每一组像素电极中的每一像素电极在对应公共电极条所在平 面上的正投影位于该公共电极条内， 每个像素电极在像素电极矩阵中所处的 行数和列数分别为 m与 n, 并且每一组像素电极中的每一像素电极的 m+n相 同。 通过公共电极驱动电路控制每一公共电极条的电位与相邻公共电极条的 电位不同， 并且每显示一帧画面， 每一公共电极条的电位改变一次， 该电位 有两种， 优选为 0V和 5V。
在本发明的液晶显示器驱动电路中， 每个公共电极条可包括至少一个公 共电极， 且所有电位保持相同的公共电极条彼此电连接。
在如图 2中所示的液晶显示器驱动电路中， 每个公共电极条对应一组像 素电极， 且每个公共电极条所包括的公共电极的数量与该公共电极条所对应 的像素电极的数量相同， 公共电极与像素电极——正对设置， 并且每组像素 电极的每个像素电极的 m+n相同。公共电极 1-1所正对的像素电极（未示出） 的 m+n为 13 , 公共电极 1-2所正对的像素电极 (未示出） 的 m+n也为 13 , 依此类推， 斜线 2-1上的公共电极所对应的各像素电极的 m+n均为 13 , 斜线 2- 1上的所有公共电极电连接为一个公共电极条。斜线 2-2上的公共电极电连 接形成一个公共电极条， 斜线 2-3 上的公共电极电连接为一个公共电极条。 以 "+" 号和 "-" 号分别表示像素电极与对应的公共电极之间电压的正极性 和负极性。 任意相邻两个公共电极条的电位不同， 使得任意相邻两条斜线上 的像素电极与对应的公共电极之间电压的极性相反， 通过公共电极驱动电路 的控制， 使每显示一帧画面， 每一公共电极条的电位改变一次， 从而实现点 反转。
在如图 3中所示的液晶显示器驱动电路中， 每个公共电极条对应两组像 极条内， 公共电极条所包括的每一个公共电极分别对应两个像素电极， 且每 条公共电极条的公共电极通过连接部 3 电连接， 如图中阶梯状斜线所示。 在 阶梯状斜线 2-4上，公共电极 1-3所对应的两个像素电极的 m+n分别为 10和 11 , 公共电极 1-5所对应的两个像素电极的 m+n也分别为 10和 11 , 这样的 m+n为 10的像素电极为一组， m+n为 11的像素电极为另一组， 依此类推。 同样以 "+" 号和 "-" 号分别表示像素电极与对应的公共电极之间电压的正 极性和负极性， 任意相邻两个公共电极条的电位不同， 通过公共电极驱动电 路的控制， 使每显示一帧画面， 每一公共电极条的电位改变一次， 从而实现 对应的像素电极的极性反转。
如图 4所示， 以这样的公共电极电位变动的方式， 假使公共电极电位最 大为 5V, 源极驱动的最大电位只需要 5V就可以了， 从而降低了源极驱动输 出的电位范围， 使得源极驱动的功耗降低。 如图 5所示， 示出了包括本实施 方式的液晶显示器驱动电路的液晶显示器的源极驱动提供的电位变化， 源极 驱动提供的电位范围为 0-5V, 当公共电极条的电位为 0V时， 液晶驱动电压 为正极性， 当公共电极条的电位为 5V时， 液晶驱动电压为负极性。
如图 2和 3所示， 不同的公共电极条不彼此交叉。
此外， 本发明中的像素电极与公共电极条优选地均为透光性良好的氧化 铟锡 ITO电极。
本发明还提供了一种包括上述液晶显示器驱动电路的液晶显示器， 该液 晶显示器还包括阵列基板、 彩膜基板以及两基板之间填充的液晶层， 像素电 极设置在阵列基板上， 公共电极条设置在阵列基板和 /或彩膜基板上。
本发明还提供了上述液晶晶显示器的驱动方法：
在第一时刻， 例如奇帧， 向相邻的公共电极条分别输入第一公共电位以 及第二公共电位； 在第二时刻， 即偶帧， 向电位为第一公共电位的公共电极 条输入第二公共电位， 向电位为第二公共电位的公共电极条输入第一公共电 位。 通过在公共电极驱动电路上设置逻辑切换开关， 保证在奇偶帧交替时， 同一公共电极条在两个电位之间切换， 从而实现在公共电极电位变动下的点 反转， 实现了在降低功耗的同时保证画面质量的目的。
优选地， 第一公共电位为 0V或 5V, 第二公共电位为 5V或 0V。
以上实施方式仅用于说明本发明， 而并非对本发明的限制。 尽管参照实 施例对本发明进行了详细说明， 本领域的普通技术人员应当理解， 对本发明 的技术方案进行各种组合、 修改或者等同替换， 都不脱离本发明技术方案的 精神和范围， 其均应涵盖在本发明的权利要求范围当中。

Claims

权 利 要 求 书
1、一种液晶显示器驱动电路， 包括由多个呈矩阵状排列的像素电极组成 的像素电极矩阵、 多个公共电极条以及分别与所述多个公共电极条相连的多 个相应的公共电极驱动电路， 每一所述公共电极条对应至少一组像素电极， 每一组像素电极中的每一所述像素电极在对应公共电极条所在平面上的正投 影位于该公共电极条内， 每一像素电极在所述像素电极矩阵中所处的行数和 列数分别为 m与 n, 并且每一组像素电极中的每一像素电极的 m+n相同； 所 述公共电极驱动电路控制每一所述公共电极条的电位与相邻公共电极条的电 位不同， 并且每显示一帧画面， 每一所述公共电极条的电位改变一次， 所述 公共电极条的电位有两种。
2、 如权利要求 1所述的液晶显示器驱动电路 ， 其中， 每个所述公共电极 条包括至少一个公共电极。
3、 如权利要求 2所述的液晶显示器驱动电路， 其中， 所有电位保持相同 的公共电极条彼此电连接。
4、 如权利要求 1所述的液晶显示器驱动电路， 其中， 所述公共电极条的 电位包括 0V和 5V。
5、 如权利要求 1-4任一项所述的液晶显示器驱动电路， 其中， 所述像素 电极与所述公共电极条均为氧化铟锡 ITO电极。
6、 一种液晶显示器， 其特征在于， 包括权利要求 1-5任一项所述的液晶 显示器驱动电路。
7、 一种权利要求 6所述的液晶显示器的驱动方法， 其特征在于： 在第一时刻向相邻的第一公共电极条和第二公共电极条分别输入第一公 共电位以及第二公共电位；
在第二时刻向电位为第一公共电位的第一公共电极条输入第二公共电 位， 向电位为第二公共电位的第二公共电极条输入第一公共电位。
8、 如权利要求 7所述的方法， 其中， 所述第一公共电位为 0V, 第二公 共电位为 5V; 或所述第一公共电位为 5V, 第二公共电位为 0V。
9、 如权利要求 7所述的方法， 其中， 所述第一时刻对应于奇帧并且所述 第二时刻对应于偶帧； 或者所述第一时刻对应于偶帧并且所述第二时刻对应 于奇帧。
PCT/CN2012/086707 2012-03-23 2012-12-14 液晶显示器驱动电路、液晶显示器及其驱动方法 WO2013139149A1 (zh)

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