CN106094382A - 显示面板、显示装置及其驱动方法 - Google Patents

显示面板、显示装置及其驱动方法 Download PDF

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CN106094382A
CN106094382A CN201610728986.3A CN201610728986A CN106094382A CN 106094382 A CN106094382 A CN 106094382A CN 201610728986 A CN201610728986 A CN 201610728986A CN 106094382 A CN106094382 A CN 106094382A
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CN106094382B (zh
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贾玉娥
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BOE Technology Group Co Ltd
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    • H—ELECTRICITY
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    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
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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
    • 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
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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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    • G09G3/34—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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Abstract

本发明公开了一种显示面板、显示装置及其驱动方法，属于显示器领域。显示面板包括对盒的第一基板和第二基板，以及设置在第一基板和第二基板之间的液晶；第一基板上设置有阵列分布的多个像素区域，多个像素区域内的每个像素区域内均设有具有四种初始预倾角的液晶，每个像素区域均包括沿扫描方向布置的第一亚像素区域和第二亚像素区域，第一亚像素区域和第二亚像素区域内分别设有一个薄膜晶体管；多条栅线中的每条栅线与一行像素区域中的所有薄膜晶体管的栅极连接，多条数据线中的每条数据线与一列像素区域中的所有薄膜晶体管的源极连接；显示面板还包括驱动电路，驱动电路用于向相邻两条栅线输入不同的栅极导通电压。

Description

显示面板、显示装置及其驱动方法
技术领域
本发明涉及显示器领域，特别涉及一种显示面板、显示装置及其驱动方法。
背景技术
随着液晶显示技术的不断成熟，市场上对于液晶显示面板的性能要求朝着高对比度、高亮度、低色偏、宽视野角等方向发展。目前能够实现宽视野角要求的技术主要有三种：扭转向列型液晶(英文Twist Nematic，简称TN)配上宽视角膜的液晶显示面板、共平面切换模式(英文In Plane Switch，简称IPS)液晶显示面板、多畴垂直取向(英文Multi-domainVertical Alignment，简称MVA)液晶显示面板。其中，MVA液晶显示面板是通过控制垂直取向液晶在静止时偏向多个不同的角度(初始预倾角)，例如两个角度、四个角度等，使得显示面板加电时形成双畴、四分畴模式。而八分畴模式的液晶显示面板是在四分畴模式的基础上将每个子像素划分为两个亚像素，通过控制两个亚像素获得不同的液晶偏转电压，从而使得两个亚像素对应的液晶的偏转角度不同，从而得到八分畴模式液晶显示面板。
由于现有的八分畴模式液晶显示面板中，需要控制两个亚像素获得不同的液晶偏转电压，因此，需要分别通过两条驱动线路(例如两条栅线)控制两个亚像素的液晶偏转电压，导致驱动电路设计复杂。
发明内容
为了解决现有八分畴模式液晶显示面板驱动电路设计复杂的问题，本发明实施例提供了一种显示面板、显示装置及其驱动方法。所述技术方案如下：
第一方面，本发明实施例提供了一种显示面板，所述显示面板包括对盒的第一基板和第二基板，以及设置在所述第一基板和所述第二基板之间的液晶，所述第一基板包括多条栅线和多条数据线；
所述第一基板上设置有阵列分布的多个像素区域，所述多个像素区域内的每个像素区域内均设有具有四种初始预倾角的液晶，所述每个像素区域均包括沿扫描方向布置的第一亚像素区域和第二亚像素区域，所述第一亚像素区域和所述第二亚像素区域内分别设有一个薄膜晶体管；
所述多条栅线中的每条栅线与一行像素区域中的所有薄膜晶体管的栅极连接，所述多条数据线中的每条数据线与一列像素区域中的所有薄膜晶体管的源极连接；
所述显示面板还包括驱动电路，所述驱动电路用于向相邻两条栅线输入不同的栅极导通电压。
在本发明实施例的一种实现方式中，所述驱动电路，用于向奇数行像素区域连接的栅线输入第一栅极导通电压，向偶数行像素区域连接的栅线输入第二栅极导通电压。
在本发明实施例的另一种实现方式中，所述第一栅极导通电压和所述第二栅极导通电压的差值处于设定范围内。
在本发明实施例的另一种实现方式中，当向所述多条栅线分别输入所述第一栅极导通电压和所述第二栅极导通电压时，每个所述第一亚像素区域和每个所述第二亚像素区域的像素电极的充电率大于设定值，所述像素电极与所述薄膜晶体管的漏极连接。
在本发明实施例的另一种实现方式中，所述设定值为98.5％。
在本发明实施例的另一种实现方式中，所述栅线设置在所述第一亚像素区域和所述第二亚像素区域之间。
第二方面，本发明实施例还提供了一种显示装置，所述显示装置包括第一方面任一项所述的显示面板。
第三方面，本发明实施例还提供了一种显示面板驱动方法，所述方法包括：
沿扫描方向依次向所述多条栅线中的各条栅线输入栅极导通电压，相邻的栅线输入的栅极导通电压不同；
向所述多条数据线中的各条数据线输入数据信号。
在本发明实施例的一种实现方式中，所述沿扫描方向依次向所述多条栅线中的各条栅线输入栅极导通电压，包括：
向奇数行像素区域连接的栅线输入第一栅极导通电压，向偶数行像素区域连接的栅线输入第二栅极导通电压。
在本发明实施例的另一种实现方式中，所述第一栅极导通电压和所述第二栅极导通电压的差值处于设定范围内。
在本发明实施例的另一种实现方式中，当向所述多条栅线分别输入所述第一栅极导通电压和所述第二栅极导通电压时，每个所述第一亚像素区域和每个所述第二亚像素区域的像素电极的充电率大于设定值，所述像素电极与所述薄膜晶体管的漏极连接。
在本发明实施例的另一种实现方式中，所述设定值为98.5％。
本发明实施例提供的技术方案带来的有益效果是：
在本发明实施例中，每个像素区域划分为两个亚像素区域，两个亚像素区域沿扫描方向分布，一条栅线同时驱动一行像素区域中两行亚像素区域中的薄膜晶体管，一条数据线为同一像素区域中的两个亚像素区域中的薄膜晶体管输送数据信号，使得同一个像素区域的两个亚像素区域的液晶偏转电压相同，但是由于相邻两行像素区域的栅极导通电压是不同的，使得相邻两行像素区域的液晶偏转电压不同，此时，将相邻两行中四行亚像素区域中的相邻的两行亚像素区域看作一行像素区域，则这行像素区域中的两行亚像素区域的液晶偏转电压是不同的，由于这两行亚像素区域内均设有具有四种初始预倾角的液晶，即每行亚像素区域可以形成四分畴，那么前述像素区域则可以形成八分畴模式，该显示面板仅采用了一条栅线控制一行像素区域形成八分畴模式，驱动电路设计简单。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A是传统的八分畴的液晶显示面板的阵列基板的结构示意图；
图1B是传统的八分畴的液晶显示面板中亚像素区域的结构示意图；
图1C是传统的八分畴的液晶显示面板的结构示意图；
图2A是本发明实施例提供的一种显示面板的结构示意图；
图2B是本发明实施例提供的第一基板的结构示意图；
图2C是本发明实施例提供的像素区域的结构示意图；
图2D是本发明实施例提供的薄膜晶体管的结构示意图；
图3是本发明实施例提供的一种显示面板驱动方法的流程图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
图1A是传统的八分畴的液晶显示面板的阵列基板的结构示意图，参见图1A，每个像素区域10由两个亚像素区域11组成，每个亚像素区域11包括一个薄膜晶体管12，每个薄膜晶体管12分别连接一条栅线13，两个薄膜晶体管12共同连接一条数据线14。
其中，本发明中每个像素区域对应彩膜基板上的一个发出一种颜色的彩色滤光片。
每个像素区域10内均设有具有四种初始预倾角的液晶，然后通过向两条栅线13输入不同的栅极导通电压，使得两个薄膜晶体管12输出给两个亚像素区域11的像素电极的像素电压不同，从而使得每个像素区域10内具有八种偏转角度的液晶，从而形成八分畴显示。
其中，可以采用多种实现方式来使得像素区域10内的四种初始预倾角的液晶。例如图1B所示，通过在亚像素区域11内设置凸起11A，11A采用折线设计，包括成角度连接的第一直线部分11B和第二直线部分11C。如图1C所示，凸起的第二直线部分11C分别设置在第一基板21上的像素电极22上，以及第二基板31上的公共电极32上。其中，第一基板21和第二基板31对盒，液晶40设置在第一基板21和第二基板31之间。
如图1C所示，液晶40在凸起的第二直线部分11C作用下，形成两种初始预倾角；相应地，液晶40在凸起的第一直线部分11B作用下，也能形成两种初始预倾角，因而得到四种初始预倾角。
图1A示出的传统的八分畴的液晶显示面板虽然能够形成八分畴显示，但是其需要为每行像素区域设计两条栅线，导致驱动电路设计复杂。
图2A是本发明实施例提供的一种显示面板的结构示意图，参见图2，该显示面板包括对盒的第一基板101和第二基板102，以及设置在第一基板101和第二基板102之间的液晶103。在本发明实施例中，第一基板101为阵列基板，第二基板102为彩膜基板。
图2B是本发明实施例提供的第一基板的结构示意图，参见图2B，第一基板101包括多条栅线111和多条数据线112。多条栅线111相互平行设置，多条数据线112相互平行设置，栅线111和数据线112相互垂直。
第一基板101上设置有阵列分布的多个像素区域113，多个像素区域113内的每个像素区域113内均设有具有四种初始预倾角(图中未示出)的液晶103。
图2C是本发明实施例提供的像素区域的结构示意图，参见图2C，每个像素区域113均包括沿扫描方向布置的第一亚像素区域131和第二亚像素区域132，第一亚像素区域131和第二亚像素区域132内分别设有一个薄膜晶体管13a。
图2D是本发明实施例提供的薄膜晶体管的结构示意图，参见图2D，薄膜晶体管13a包括栅极13A、源极13B和漏极13C，多条栅线111中的每条栅线111与一行像素区域113中的所有薄膜晶体管13a的栅极13A连接，多条数据线112中的每条数据线112与一列像素区域113中的所有薄膜晶体管13a的源极13B连接，薄膜晶体管13a的漏极13C与像素电极13D连接。其中，第一亚像素区域131和第二亚像素区域132中分别设有一个像素电极13D。
再次参见图2B，该显示面板还包括驱动电路114，驱动电路114用于向相邻两条栅线112输入不同的栅极导通电压。
在本发明实施例中，每个像素区域划分为两个亚像素区域，两个亚像素区域沿扫描方向分布，一条栅线同时驱动一行像素区域中两行亚像素区域中的薄膜晶体管，一条数据线为同一像素区域中的两个亚像素区域中的薄膜晶体管输送数据信号，使得同一个像素区域的两个亚像素区域的液晶偏转电压相同，但是由于相邻两行像素区域的栅极导通电压是不同的，使得相邻两行像素区域的液晶偏转电压不同，此时，将相邻两行中四行亚像素区域中的相邻的两行亚像素区域看作一行像素区域，则这行像素区域中的两行亚像素区域的液晶偏转电压是不同的，由于这两行亚像素区域内均设有具有四种初始预倾角的液晶，即每行亚像素区域可以形成四分畴，那么前述像素区域则可以形成八分畴模式，该显示面板仅采用了一条栅线控制一行像素区域形成八分畴模式，驱动电路设计简单。
实现时，为了使得像素区域10内的四种初始预倾角的液晶，可以采用图1B示出的方式在亚像素区域11内设置凸起11A，具体参照前文描述，这里不再赘述。
实现时，驱动电路114可以采用集成电路实现。驱动电路包括栅线驱动单元和数据线驱动单元，栅线驱动单元用于向栅线111输出栅电压(包括栅极导通电压)，数据线驱动单元用于向数据线112输出数据信号。
在本发明实施例中，为了使输入到相邻两条栅线112的栅极导通电压不同，驱动电路114可以通过多种方式向多条栅线111输出栅极导通电压，例如，沿着扫描方向向各条栅线111输出渐变的栅极导通电压，或者，沿着扫描方向向各条栅线111输出交替变化的栅极导通电压。
优选地，驱动电路114，用于向奇数行像素区域113连接的栅线111输入第一栅极导通电压，向偶数行像素区域113连接的栅线111输入第二栅极导通电压，第一栅极导通电压和第二栅极导通电压不相等。在该实现方式中，仅采用两个电压交替驱动各行像素区域113，驱动信号设计最为简单。
其中，驱动电路114可以设置在第一基板101上，例如设置在第一基板101的外围区域。外围区域是相对显示区域外围的区域，显示区域是指设置有薄膜晶体管阵列的区域。
具体地，第一栅极导通电压和第二栅极导通电压的差值可以处于设定范围内。第一栅极导通电压和第二栅极导通电压差值过大会对正常显示产生影响，第一栅极导通电压和第二栅极导通电压差值过小无法形成八分畴模式。通常设置时，设定范围可以为第一栅极导通电压的10％-30％。例如，后文表格中第一栅极导通电压和第二栅极导通电压差值为第一栅极导通电压的20％。
在本发明实施例中，前述第一栅极导通电压和第二栅极导通电压还需要满足充电率的要求。具体地，当向多条栅线111分别输入第一栅极导通电压和第二栅极导通电压时，每个第一亚像素区域131和每个第二亚像素区域132的像素电极的充电率大于设定值，如图2D所示，像素电极13D与薄膜晶体管13a的漏极13C连接。充电率是指像素电极的实际电压与像素电极的目标电压的比值。通过控制两个栅极导通电压大小保证充电率满足要求，以使显示面板正常显示。
八分畴模式的显示面板中，设定值通常规定为98.5％。
下表提供了一种栅极导电电压与导电率、像素电压的对应关系。
参见图2C，在本发明实施例中，栅线111设置在第一亚像素区域131和第二亚像素区域132之间。栅线设计在第一亚像素区域和第二亚像素区域之间，方便栅线走线。
本发明实施例还提供了一种显示装置，该显示装置包括图2A～图2C任一幅所示的显示面板。
在具体实施时，本发明实施例提供的显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
在本发明实施例中，每个像素区域划分为两个亚像素区域，两个亚像素区域沿扫描方向分布，一条栅线同时驱动一行像素区域中两行亚像素区域中的薄膜晶体管，一条数据线为同一像素区域中的两个亚像素区域中的薄膜晶体管输送数据信号，使得同一个像素区域的两个亚像素区域的液晶偏转电压相同，但是由于相邻两行像素区域的栅极导通电压是不同的，使得相邻两行像素区域的液晶偏转电压不同，此时，将相邻两行中四行亚像素区域中的相邻的两行亚像素区域看作一行像素区域，则这行像素区域中的两行亚像素区域的液晶偏转电压是不同的，由于这两行亚像素区域内均设有具有四种初始预倾角的液晶，即每行亚像素区域可以形成四分畴，那么前述像素区域则可以形成八分畴模式，该显示面板仅采用了一条栅线控制一行像素区域形成八分畴模式，驱动电路设计简单。
图3是本发明实施例提供的一种显示面板驱动方法的流程图，参见图3，该方法包括：
步骤301：沿扫描方向依次向多条栅线中的各条栅线输入栅极导通电压，相邻的栅线输入的栅极导通电压不同。
步骤302：向多条数据线中的各条数据线输入数据信号。
在本发明实施例中，每个像素区域划分为两个亚像素区域，两个亚像素区域沿扫描方向分布，一条栅线同时驱动一行像素区域中两行亚像素区域中的薄膜晶体管，一条数据线为同一像素区域中的两个亚像素区域中的薄膜晶体管输送数据信号，使得同一个像素区域的两个亚像素区域的液晶偏转电压相同，但是由于相邻两行像素区域的栅极导通电压是不同的，使得相邻两行像素区域的液晶偏转电压不同，此时，将相邻两行中四行亚像素区域中的相邻的两行亚像素区域看作一行像素区域，则这行像素区域中的两行亚像素区域的液晶偏转电压是不同的，由于这两行亚像素区域内均设有具有四种初始预倾角的液晶，即每行亚像素区域可以形成四分畴，那么前述像素区域则可以形成八分畴模式，该显示面板仅采用了一条栅线控制一行像素区域形成八分畴模式，驱动电路设计简单。
实现时，沿扫描方向依次向多条栅线中的各条栅线输入栅极导通电压可以包括：
向奇数行像素区域连接的栅线输入第一栅极导通电压，向偶数行像素区域连接的栅线输入第二栅极导通电压。采用两个电压交替驱动各行像素区域，驱动信号设计简单。
在本发明实施例的一种实现方式中，第一栅极导通电压和第二栅极导通电压的差值处于设定范围内。第一栅极导通电压和第二栅极导通电压差值过大会对正常显示产生影响，第一栅极导通电压和第二栅极导通电压差值过小无法形成八分畴模式。
在本发明实施例的另一种实现方式中，当向多条栅线分别输入第一栅极导通电压和第二栅极导通电压时，每个第一亚像素区域和每个第二亚像素区域的像素电极的充电率大于设定值，像素电极与薄膜晶体管的漏极连接。通过控制两个导通电压大小保证充电率满足要求，以使显示面板正常显示。
八分畴模式的显示面板中，设定值通常规定为98.5％。也就是说，为满足像素充电率要求，充电率需大于98.5％。
以上仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

1.一种显示面板，其特征在于，所述显示面板包括对盒的第一基板和第二基板，以及设置在所述第一基板和所述第二基板之间的液晶，所述第一基板包括多条栅线和多条数据线；
所述第一基板上设置有阵列分布的多个像素区域，所述多个像素区域内的每个像素区域内均设有具有四种初始预倾角的液晶，所述每个像素区域均包括沿扫描方向布置的第一亚像素区域和第二亚像素区域，所述第一亚像素区域和所述第二亚像素区域内分别设有一个薄膜晶体管；
所述多条栅线中的每条栅线与一行像素区域中的所有薄膜晶体管的栅极连接，所述多条数据线中的每条数据线与一列像素区域中的所有薄膜晶体管的源极连接；
所述显示面板还包括驱动电路，所述驱动电路用于向相邻两条栅线输入不同的栅极导通电压。
2.根据权利要求1所述的显示面板，其特征在于，所述驱动电路，用于向奇数行像素区域连接的栅线输入第一栅极导通电压，向偶数行像素区域连接的栅线输入第二栅极导通电压。
3.根据权利要求2所述的显示面板，其特征在于，所述第一栅极导通电压和所述第二栅极导通电压的差值处于设定范围内。
4.根据权利要求2所述的显示面板，其特征在于，当向所述多条栅线分别输入所述第一栅极导通电压和所述第二栅极导通电压时，每个所述第一亚像素区域和每个所述第二亚像素区域的像素电极的充电率大于设定值，所述像素电极与所述薄膜晶体管的漏极连接。
5.根据权利要求4所述的显示面板，其特征在于，所述设定值为98.5％。
6.根据权利要求1至5任一项所述的显示面板，其特征在于，所述栅线设置在所述第一亚像素区域和所述第二亚像素区域之间。
7.一种显示装置，其特征在于，所述显示装置包括权利要求1至6任一项所述的显示面板。
8.一种显示面板驱动方法，其特征在于，所述方法包括：
沿扫描方向依次向所述多条栅线中的各条栅线输入栅极导通电压，相邻的栅线输入的栅极导通电压不同；
向所述多条数据线中的各条数据线输入数据信号。
9.根据权利要求8所述的方法，其特征在于，所述沿扫描方向依次向所述多条栅线中的各条栅线输入栅极导通电压，包括：
向奇数行像素区域连接的栅线输入第一栅极导通电压，向偶数行像素区域连接的栅线输入第二栅极导通电压。
10.根据权利要求9所述的方法，其特征在于，所述第一栅极导通电压和所述第二栅极导通电压的差值处于设定范围内。
11.根据权利要求9所述的方法，其特征在于，当向所述多条栅线分别输入所述第一栅极导通电压和所述第二栅极导通电压时，每个所述第一亚像素区域和每个所述第二亚像素区域的像素电极的充电率大于设定值，所述像素电极与所述薄膜晶体管的漏极连接。
12.根据权利要求11所述的方法，其特征在于，所述设定值为98.5％。
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