CN105261339A - 液晶显示设备及液晶面板与液晶面板的驱动方法 - Google Patents

液晶显示设备及液晶面板与液晶面板的驱动方法 Download PDF

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CN105261339A
CN105261339A CN201510740856.7A CN201510740856A CN105261339A CN 105261339 A CN105261339 A CN 105261339A CN 201510740856 A CN201510740856 A CN 201510740856A CN 105261339 A CN105261339 A CN 105261339A
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liquid crystal
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CN105261339B (zh
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杜鹏
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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    • 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
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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    • 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
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0205—Simultaneous scanning of several lines in flat panels
    • G09G2310/021—Double addressing, i.e. scanning two or more lines, e.g. lines 2 and 3; 4 and 5, at a time in a first field, followed by scanning two or more lines in another combination, e.g. lines 1 and 2; 3 and 4, in a second field
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    • 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
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Abstract

本发明为液晶显示设备及液晶面板与液晶面板的驱动方法，揭露一种阵列基板，用于提供极性连续翻转的电压信号的数据线其特征在于，包括依序排列的多个驱动栅极线组，与以非电性接触的方式垂直交错于所述多个驱动栅极线组的依序排列的多条数据线。每一驱动栅极线组具有两条栅极线，分别为一奇数栅极线与一偶数栅极线；所述多条数据线依序分为奇数数据线与偶数数据线。其中所述两相邻驱动栅极线组之间有多个次像素，且一部份次像素每经过一特定条数的所述数据线会改变与所述奇数栅极线与所述偶数栅极线的连接位置。

Description

液晶显示设备及液晶面板与液晶面板的驱动方法
技术领域
本发明涉及一种液晶显示设备及液晶面板与液晶面板的驱动方法，特别涉及用于薄膜晶体管液晶显示器(ThinFilmTransistorLiquidCrystalDisplay,TFT-LCD)的液晶显示设备及液晶面板与液晶面板的驱动方法。
背景技术
现在的液晶面板生产中，降低制作成本是一项非常重要的内容。数据线分享(DataLineSharing,DLS)架构是一种常用的方法，它是将栅极线(GateLine)的数量加倍，而数据线(DataLine)的数量减半，从而减少驱动电路的数量，达到降低成本的目的。
现在液晶面板驱动方式中，列反转(ColumnInversion)的数据线信号极性切换频率最低，因而是一种功耗最低的驱动反转方式，现在被大量的采用。图1是采用DLS架构和列反转的TFT-LCD面板的示意图，其中G_1-G_8表示栅极线的编号，D_1-D_5表示资料线的编号，虚线框中部分为次像素，其中正负号表示驱动电压的极性，每一列次像素的极性和它左右的次像素都是相反的，即列反转方式。
图1中的面板是传统的RGB(Red-Green-Blue)架构，当它搭配DLS架构时，在显示某些混色画面时，例如显示由绿色和蓝色混合的青色画面，因为次像素电极E_pixel和公共电极E_cm之间存在液晶电容C_lc和存储电容C_st，在电容耦合的作用下，公共电极E_cm的电位往往会发生漂移，从而导致显示不良，例如串扰(Crosstalk)等问题。以图2a为例，图2a是混色画面下数据线的信号波形图。假定这时面板显示的是绿色和蓝色混合的青色画面，假设公共电极E_cm的电位为7V，L255灰阶的正极性电压为14V，负极性电压为0V。以图1中的三条资料线D_2，D_3和D_4为例，D_2数据线连接的全部为绿色次像素G和蓝色次像素B，而且此时是负极性信号，所以它的信号波形是一个0V的直流电压信号。D_3数据线此时对应的电压信号为正极性，当奇数编号的栅极线打开时，D_3为红色次像素R充电，由于在青色画面下红色次像素R对应的是L0灰阶，所以写入红色次像素R的电压信号为公共电极电压，即7V，偶数编号的栅极线打开时，Data3为绿色次像素G写入L255信号，此时对应的信号电压为14V。同理，对于Data4也可以做相同的分析，当奇数编号的栅极线打开时，为蓝色次像素B写入负极性的L255灰阶信号，对应的电压为0V，偶数编号的栅极线打开时，为红色次像素R写入负极性的L0灰阶信号，对应的电压为7V，即公共电极电压。但是从图2a中的D_3和D_4波形可以看到，这两个波形非常相似，只是电位的高低有区别。它们的信号由低到高和有高到低跳变的时刻都是相同的，如图2a中虚线圈中所标注的。在这种情况下，数据线的信号写入次像素电极E_pixel后，会通过液晶电容C_lc和存储电容C_st对公共电极E_cm产生电容耦合作用，使公共电极E_cm的电位发生改变。以图2a中的波形为例，当D_3和D_4的信号由低到高跳变时，整行次像素对应的公共电压会被拉高，相反的，当D_3和D_4信号有高到低跳变时，整行次像素对应的公共电极电压会被拉低，由于公共电极电压不稳，将会导致显示不良发生，最典型的就是串扰(Crosstalk)，如图2b的混色画面示意图所示，在一个混色背景中间增加一个白色的框200时，白框两侧的背景201亮度与其他区域202不同。
最近为了提高面板的穿透率而采用的WRGB(White-Red-Green-Blue)技术，在显示纯色画面时也会存在同样的问题。图3是一传统WRGB面板的示意图，这种架构的面板在显示纯色画面时，也会出现图2中的问题，因而会导致串扰产生，如图4所示，在一个混色背景中间增加一个白色的框400时，白框两侧的背景401亮度与其他区域402不同。
发明内容
鉴于以上问题，本发明的目的在于提供一种能够解决串扰问题的液晶显示设备及液晶面板与液晶面板的驱动方法。
本发明的一实施例揭露了一种阵列基板，用于提供极性连续翻转的电压信号的数据线其特征在于，包括：依序排列的多个驱动栅极线组，每一驱动栅极线组具有两条栅极线，分别为一奇数栅极线与一偶数栅极线；依序排列的多条数据线，以非电性接触的方式垂直交错于所述多个驱动栅极线组，所述多条数据线依序分为奇数数据线与偶数数据线；其中所述两相邻驱动栅极线组之间有多个次像素，且一部份次像素每经过一特定条数的所述数据线会改变与所述奇数栅极线与所述偶数栅极线的连接位置，至少一条数据线两侧边的次像素所连接的栅极线与至少另一相邻数据线上相对应两侧边的次像素所连接的栅极线之所述连接位置不相同。
较佳地，所述每一次像素通过开关分别与所述多个栅极线的其中之一和所述多个数据线的其中之一电连接。
较佳地，所述开关为薄膜晶体管，所述薄膜晶体管的栅极与对应的所述栅极线电连接，其源极与所述多个数据线的其中之一电连接，其漏极与所述多个次像素的其中之一电连接。
较佳地，所述多个数据线中的任相邻两数据线在同一时间点、同一种次像素的电压是相反的。
较佳地，所述多个次像素依序是以红色次像素、绿色次像素、蓝色次像素循环排列。
本发明能防止公共电极的电位被次像素电极耦合而发生漂移，提高DLS架构面板的公共电极电位的稳定性，提升面板显示质量。
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例并配合附图做详细说明。
附图说明
图1是传统DLS架构和列反转的TFT-LCD面板的示意图；
图2a是图1的面板在混色画面下数据线的信号波形图；
图2b是图2a的面板中混色画面示意图；
图3是一传统WRGB面板的示意图；
图4是图3的面板中数据线信号串扰示意图；
图5是依据本发明一实施例的液晶面板示意图；
图6a是图5的面板在混色画面下数据线的信号波形图；
图6b是图6a的面板中混色画面示意图；
图7是依据本发明另一实施例的液晶面板示意图；以及
图8是图7的面板在纯色画面下数据线的信号波形图。
具体实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
请参照图5，图5是依据本发明一实施例的液晶面板示意图，在图5液晶面板中，具有横向顺序排列的五个栅极线组，每一栅极线组个别具有两条栅极线G_1与G_2、G_3与G_4、G_5与G_6、G_7与G_8、G_9与G_10，分别为奇数栅极线G_1、G_3、G_5、G_7、G_9与偶数栅极线G_2、G_4、G_6、G_8、G_10；纵向排列的五个资料线D_1-5，并依序分为奇数资料线D_1、D_3、D_5与偶数资料线D_2、D_4、D_6；其中所述两邻栅极线组之间依次按顺序设有多个红色次像素R、蓝色次像素B、绿色次像素G，图中红色次像素R分别与栅极线组G_3与G_4和所述多个数据线中的一数据线D_1的一侧电连接，所述红色次像素R通过开关分别与对应的所述栅极线G_3和对应的所述数据线Date1电连接，所述开关为薄膜晶体管T，所述薄膜晶体管T的栅极E_gate与对应的所述栅极线G_3电连接，其源极E_source与对应的所述数据线D_1电连接，其漏极E_drain与对应的所述红色次像素R电连接，其余次像素也是以相似方法连接。其中在一驱动栅极线组G_3、G_4与所述数据线D_2的交错位置上，在数据线D_2左边的次像素连接栅极线G_3，右边的次像素连接栅极线G_4，不同于相邻数据线D_3左边的次像素连接栅极线G_4，右边的次像素连接栅极线G_3，也就是说，相邻的两条栅极线每经过一条数据线就进行一次交叉，即上下位置的交换，其中经过一条数据线进行一次交叉只是本发明中的一例子，而非限制。如图中的G_1和G_2，在D_1和D_2之间会有一个交叉，在经过D_1时，G_1在上方，而G_2在下方；在经过D_2时，它们的上下位置切换，G_1在下方，而G_2在上方。
采用图5中的架构之后，当面板在显示青色画面的数据线波形如图6a所示。与图2a相同，仍然采用D_2，D_3和D_4进行分析，D_2的情况与图2中的相同，连接的全部为绿色次像素G和蓝色次像素B，而且此时是负极性信号，所以它的信号波形是一个0V的直流电压信号。D_3数据线此时对应的电压信号为正极性，当奇数编号的栅极线打开时，D_3为绿色次像素G充电，写入L255信号，此时对应的信号电压为14V。偶数编号的栅极线打开时，D_3为红色次像素R充电，由于在青色画面下红色次像素R对应的是L0灰阶，所以写入红色次像素R的电压信号为公共电极电压，即7V。同理，对于D_4也可以做相同的分析，当奇数编号的栅极线打开时，为蓝色次像素B写入负极性的L255灰阶信号，对应的电压为0V，偶数编号的栅极线打开时，为红色次像素R写入负极性的L0灰阶信号，对应的电压为7V，即公共电极电压。
从图6a中的波形可以看到，D_2和D_3的信号电压切换仍然是在同一时刻，但他们电压跳变的方向相反，一个有高到低跳变时，另一个则是从低到高跳变，虽然此时它们也会通过液晶电容C_lc和存储电容C_st对公共电极E_cm产生耦合作用，但由于两种不同方向的耦合效果相互抵消，公共电极E_cm的电位受到的影响非常小，几乎不会发生改变。公共电极电位稳定后，串扰的问题会得到极大程度的改善，从而使面板的显示质量得到提升，如图6b的混色画面示意图所示，在一个混色背景中间增加一个白色的框600时，白框周围的背景601亮度都相同。
针对上述WRGB架构的面板，本发明也提出了另一液晶面板实施例，如图7所示，在图7液晶面板中，具有横向顺序排列的五个栅极线组，每一栅极线组个别具有两条栅极线G_1与G_2、G_3与G_4、G_5与G_6、G_7与G_8、G_9与G_10，分别为奇数栅极线G_1、G_3、G_5、G_7、G_9与偶数栅极线G_2、G_4、G_6、G_8、G_10；纵向排列的五个资料线D_1-5，并依序分为奇数资料线D_1、D_3、D_5与偶数资料线D_2、D_4、D_6；其中所述两邻栅极线组之间依次按顺序设有多个红色次像素R、蓝色次像素B、绿色次像素G，图中红色次像素R分别与栅极线组G_3与G_4和所述多个数据线中的一数据线D_1的一侧电连接，所述红色次像素R通过开关分别与对应的所述栅极线G_3和对应的所述数据线Date1电连接，所述开关为薄膜晶体管T，所述薄膜晶体管T的栅极E_gate与对应的所述栅极线G_3电连接，其源极E_source与对应的所述数据线D_1电连接，其漏极E_drain与对应的所述红色次像素R电连接，其余次像素也是以相似方法连接。图7中的架构与图5类似，不同的在于图7中，在一驱动栅极线组G_3、G_4与所述数据线D_2的交错位置上，在数据线D_4左边的次像素连接栅极线G_4，右边的次像素连接栅极线G_3，不同于相邻的数据线D_3与不相邻的数据线D_4是左边的次像素连接栅极线G_3，右边的次像素连接栅极线G_4，也就是说，相邻的两条栅极线是每经过两条数据线才进行一次交叉，而图5中的相邻两条栅极线每经过一条数据线就会进行一次交叉，其中经过一条或两条数据线进行一次交叉只是本发明中的一例子，而非限制。以图7中的G_1和G_2为例，它们经过D_1和D_2时，都是G_1在上方，G_2在下方。在D_2和D_3之间它们进行一次交叉，经过D_3和D_4时，G_1在下方，G_2在上方，在D_4和D_5之间再进行一次交叉。
以图7中的面板显示红色画面为例，相关资料线的波形图如图8所示。图8是图7的面板在纯色画面下数据线的信号波形图，由于D_2和D_4连接的是蓝色次像素B和白色次像素W，在红色画面下它们对应的都是L0灰阶，所以D_2和D_4的信号为7V的直流电压信号。D_1在奇数编号的栅极线打开时为红色次像素R充电，电压为14V，偶数编号的栅极线打开时，为绿色次像素G充电，对应电压为7V。D_3的情况则相反，在奇数编号的栅极线打开时，为绿色次像素G充电，对应电压为7V，而偶数编号的栅极线打开时，为红色次像素R充电，对应电压为14V。从图中虚线圈中的部分可以看到，D_1和D_3的信号电压切换时刻相同，但切换的方向是相反的。与图6a中的原理相同，数据线与次像素电极E_pixel对公共电极E_cm的电容耦合作用会相互抵消，从而能够维持公共电极电压的稳定性，提升面板的显示质量。
本发明实施例图5、图7中的阵列基板，可应用于多种液晶面板与液晶显示器中。
本发明能防止公共电极的电位被次像素电极耦合而发生漂移，提高DLS架构面板的公共电极电位的稳定性，提升面板显示质量。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (10)

1.一种阵列基板，用于提供极性连续翻转的电压信号的数据线，其特征在于，包括：
依序排列的多个驱动栅极线组，每一驱动栅极线组具有两条栅极线，分别为一奇数栅极线与一偶数栅极线；
依序排列的多条数据线，以非电性接触的方式垂直交错于所述多个驱动栅极线组，所述多条数据线依序分为奇数数据线与偶数数据线；
其中所述两相邻驱动栅极线组之间有多个次像素，且一部份次像素每经过一特定条数的所述数据线改变与所述奇数栅极线与所述偶数栅极线的连接位置，其中在一驱动栅极线组与所述多条数据线的交错位置上，至少一条数据线两侧边的次像素所连接的栅极线与至少另一相邻数据线上相对应两侧边的次像素所连接的栅极线之所述连接位置不相同。
2.根据权利要求1所述的阵列基板，其特征在于，所述每一次像素通过开关分别与所述多个栅极线的其中之一和所述多个数据线的其中之一电连接。
3.根据权利要求2所述的阵列基板，其特征在于，所述开关为薄膜晶体管，所述薄膜晶体管的栅极与对应的所述栅极线电连接，其源极与所述多个数据线的其中之一电连接，其漏极与所述多个次像素的其中之一电连接。
4.根据权利要求1所述的阵列基板，其特征在于，所述多个数据线中的任相邻两数据线在同一时间点、同一种次像素的电压是相反的。
5.根据权利要求1所述的阵列基板，其特征在于，所述多个次像素依序是以红色次像素、绿色次像素、蓝色次像素循环排列。
6.一种液晶面板，包括一阵列基板，其特征在于，包括：
依序排列的多个驱动栅极线组，每一驱动栅极线组具有两条栅极线，分别为一奇数栅极线与一偶数栅极线；
依序排列的多个资料线，以非电性接触的方式垂直交错于所述多个驱动栅极线组，被依序分为奇数数据线与偶数数据线；
其中所述两邻驱动栅极线组之间有多个次像素，且一部份次像素每经过一特定条数的所述数据线会改变与所述奇数栅极线与所述偶数栅极线的连接位置，其中在一驱动栅极线组与所述多条数据线的交错位置上，至少一条数据线两侧边的次像素所连接的栅极线与至少另一相邻数据线上相对应两侧边的次像素所连接的栅极线之所述连接位置不相同。
7.根据权利要求6所述的液晶面板，其特征在于，所述每一次像素通过开关分别与所述多个栅极线的其中之一和所述多个数据线的其中之一电连接。
8.根据权利要求7所述的液晶面板，其特征在于，所述开关为薄膜晶体管，所述薄膜晶体管的栅极与对应的所述栅极线电连接，其源极与所述多个数据线的其中之一电连接，其漏极与所述多个次像素的其中之一电连接。
9.根据权利要求6所述的液晶面板，其特征在于，所述多个资料线中的任相邻两数据线在同一时间点、同一种次像素的电压是相反的。
10.根据权利要求6所述的液晶面板，其特征在于，所述多个次像素依序是以红色次像素、绿色次像素、蓝色次像素来循环排列。
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CN110208995A (zh) * 2019-06-29 2019-09-06 上海中航光电子有限公司 一种阵列基板、显示面板及显示装置

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