CN105739196A - 液晶面板及液晶显示器 - Google Patents
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- 239000000758 substrate Substances 0.000 claims abstract description 66
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- 239000010408 film Substances 0.000 claims description 143
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 claims description 5
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- 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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- G02F1/00—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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- 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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- G02F1/01—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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- G02F1/01—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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- G02F1/00—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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Abstract
本发明公开了一种液晶面板及液晶显示器,包括相对设置的TFT薄基板和CF基板,所述TFT基板的各子像素区域均设有第一导电薄膜,所述CF基板的各子滤光单元区域均设有与所述第一导电薄膜相对的第二导电薄膜,所述第一导电薄膜与所述第二导电薄膜均为矩形,所述第一导电薄膜的中心投影于所述第二导电薄膜的中心,所述第二导电薄膜的面积大于所述第一导电薄膜的面积,所述第二导电薄膜大于所述第一导电薄膜的区域形成环状导电薄膜,所述环状导电薄膜的各边均开设有缺口,所述缺口的一边与所述第一导电薄膜的一边平齐,所述缺口关于所述缺口所在的所述环状导电薄膜的边的中心对称。本发明的液晶面板及液晶显示器,能够降低暗纹程度,提升液晶面板的穿透率。
Description
技术领域
本发明涉及液晶制造技术领域,尤其涉及一种液晶面板及具有所述液晶面板的液晶显示器。
背景技术
VA(VerticalAlignment,垂直配向)模式具有宽视野角、高对比度和无需摩擦配向等优势,因而成为大尺寸TFT-LCD(ThinFilmTransistor-LiquidCrystalDisplay,薄膜晶体管液晶显示器)的常见显示模式。在各类VA显示技术中,UV2A(UltraVioletInducedMulti-DomainVerticalAlignment,紫外光诱导的多域垂直配向)技术制造的液晶面板具有高开口率、高对比度、快速响应等特性。UV2A是一种利用UV(UltraViolet)光进行VA液晶配向的光配向技术,其在配向膜上添加具有趋光性的添加剂,并采用线性偏振紫外光照射该配向膜,赋予该配向膜对液晶分子的配向控制力,从而控制液晶分子的转向。
液晶面板的上、下基板间会形成边缘电场,该边缘电场将对夹设于两层基板间的液晶分子施加电场力,从而影响液晶分子的转向;再加上UV2A特殊的正交垂直光配向方式,随着配向方向的改变,在像素单元内将形成暗纹,例如暗纹、暗纹、暗纹或暗纹。暗纹会降低液晶面板的穿透率,影响液晶面板的对比度。
发明内容
有鉴于此,本发明提供了一种液晶面板及具有所述液晶面板的显示器,能够降低暗纹程度,提升液晶面板的穿透率。
一种液晶面板,包括相对设置的TFT薄膜晶体管基板和CF彩色滤光片基板,所述TFT基板的每个子像素区域均设有第一导电薄膜,所述CF基板的每个子滤光单元区域均设有与所述第一导电薄膜相对的第二导电薄膜,所述第一导电薄膜与所述第二导电薄膜均为矩形,所述第一导电薄膜的中心投影于所述第二导电薄膜的中心,所述第二导电薄膜的面积大于所述第一导电薄膜的面积,所述第二导电薄膜大于所述第一导电薄膜的区域形成环状导电薄膜,所述环状导电薄膜的各边均开设有缺口,所述缺口的一边与所述第一导电薄膜的一边平齐,且所述缺口关于所述缺口所在的所述环状导电薄膜的边的中心对称。
其中,多个所述第二导电薄膜对应的多个所述环状导电薄膜相连,多个所述第一导电薄膜与多个所述缺口均阵列分布。
其中,所述第一导电薄膜与所述第二导电薄膜均为ITO氧化铟锡薄膜。
其中,所述TFT基板与所述CF基板上均涂布有由聚酰乙胺制成的配向膜。
一种液晶显示器,包括液晶面板,所述液晶面板包括相对设置的TFT薄膜晶体管基板和CF彩色滤光片基板,所述TFT基板的每个子像素区域均设有第一导电薄膜,所述CF基板的每个子滤光单元区域均设有与所述第一导电薄膜相对的第二导电薄膜,所述第一导电薄膜与所述第二导电薄膜均为矩形,所述第一导电薄膜的中心投影于所述第二导电薄膜的中心,所述第二导电薄膜的面积大于所述第一导电薄膜的面积,所述第二导电薄膜大于所述第一导电薄膜的区域形成环状导电薄膜,所述环状导电薄膜的各边均开设有缺口,所述缺口的一边与所述第一导电薄膜的一边平齐,且所述缺口关于所述缺口所在的所述环状导电薄膜的边的中心对称。
其中,多个所述第二导电薄膜对应的多个所述环状导电薄膜相连,多个所述第一导电薄膜与多个所述缺口均阵列分布。
其中,所述第一导电薄膜与所述第二导电薄膜均为ITO氧化铟锡薄膜。
其中,所述TFT基板与所述CF基板上均涂布有由聚酰乙胺制成的配向膜。
因此,本发明的液晶面板及具有所述液晶面板的液晶显示器,通过在CF基板上的第二导电薄膜的各边均设置缺口,使缺口在长度方向上关于第二导电薄膜的边的中心对称分布、使缺口的一边在宽度方向与第一导电薄膜的边平齐,消除了缺口位置对液晶分子的边缘电场效应,避免了边缘暗纹的形成,从而降低了暗纹程度、提升了液晶面板的穿透率和对比度。
附图说明
为了更清楚地说明本发明的技术方案,下面将对实施方式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方式,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,还可以如这些附图获得其他的附图。
图1是现有技术中液晶面板上的子像素区域内的第二导电薄膜与第一导电薄膜的结构示意图。
图2(a)~2(d)是现有技术中的TFT基板上子像素区域内产生暗纹的原理示意图。
图3是本发明实施例中液晶面板上的子像素区域内的第二导电薄膜与第一导电薄膜的结构示意图。
图4是本发明实施例中TFT基板上的子像素区域内的暗纹的模拟显示示意图。
图5是本发明实施例中液晶面板上的多个第二导电薄膜与多个第一导电薄膜阵列排布形成的像素结构的示意图。
具体实施例
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
液晶面板包括TFT(ThinFilmTransistor,薄膜晶体管)基板、液晶层和CF(ColorFilter,彩色滤光片)基板。其中,TFT基板与CF基板相对设置,两者之间夹设有液晶层。TFT基板上包括多个子像素区域,CF基板上包括多个子滤光单元区域,TFT基板上的每个子像素区域与CF基板上的每个子滤光单元区域对应设置。TFT基板上的各子像素区域均设有第一导电薄膜,CF基板上的每个子滤光单元区域均设有第二导电薄膜,第一导电薄膜与第二导电薄膜相对设置。图1示出了现有技术中的一种VA模式的TFT液晶面板(图未示),其中,第二导电薄膜2的面积大于第一导电薄膜1的面积。
为了控制液晶分子的排列方向,在CF基板和TFT基板上均涂布有一层配向膜(图未示)。配向膜由高分子材料制成、再经过配向技术处理得到。配向膜具有对液晶分子的配向控制力,能够使得液晶分子按照一定的方向排列以实现颜色显示。配向技术主要有摩擦配向技术和非摩擦配向技术,非摩擦配向技术可以避免机械摩擦配向给配向膜带来的不良异常。在非摩擦配向技术中,UV2A技术得到了广泛使用。UV2A技术中,CF基板和TFT基板上的配向膜中还增加了趋光性添加剂,并采用线性偏振的UV光对CF基板和TFT基板上的配向膜进行照射。UV光以一定的斜角精确照射在配向膜上,配向膜中的特殊高分子材料,以皮米(pm)级的高精度均匀地自动导向成UV光照射角度,进而使液晶分子的预倾角自动导向成配向膜高分子的方向,控制液晶分子沿着UV光方向倾斜排列。如上所述,CF基板上的第二导电薄膜的面积大于TFT基板上的第一导电薄膜的面积,由于边缘电场效应,第二导电薄膜周缘的电场密度较大,形成指向第二导电薄膜内部的较强的电场力。在该电场力的作用下,原本按照配向方向有序排列的液晶分子,会发生倾倒方向上的交叉、搭接,从而在TFT基板的子像素区域内形成暗纹。UV2A技术中,当UV光以不同方向照射时,将会相应出现不同形状的暗纹。
具体的,图2(a)~2(d)示出了现有技术中TFT基板的子像素区域内的不同形状暗纹的形成情况。在图2(a)中,黑色方框表示TFT基板上的子像素区域,实线箭头表示所述电场力的方向,虚线箭头表示在UV2A配向过程中液晶分子的转动方向,形实线表示一种暗纹。该形暗纹的形成原理为:当所述电场力的方向与靠近第二导电薄膜边缘处的液晶分子的转动方向的夹角大于90度时,此处的液晶分子发生倾倒方向上的交叉、搭接,从而在此处形成边缘暗纹;当所述电场力的方向与靠近第二导电薄膜边缘处的液晶分子的转动方向的夹角小于90度时,此处则不形成边缘暗纹;由于UV2A特殊的正交垂直光配向方式,在TFT基板的子像素区域的中部形成“十”形暗纹。类似的,在图2(b)中形成了形暗纹、在图2(c)中形成了形暗纹、在图2(d)中形成了形暗纹。上述暗纹会降低液晶面板的穿透率,影响液晶面板的对比度。
如图3所示,本发明实施例的液晶面板(图未示)包括TFT基板(图未示)、液晶层(图未示)和CF基板(图未示)。其中,TFT基板上包括多个子像素区域,CF基板上包括多个子滤光单元区域,TFT基板上的每个子像素区域与CF基板上的每个子滤光单元区域对应设置。TFT基板上的各子像素区域均设有第一导电薄膜1,CF基板上的各子滤光单元区域均设有第二导电薄膜3,第一导电薄膜1与第二导电薄膜3相对设置。第一导电薄膜1与第二导电薄膜3均为面状的半导体导电薄膜,其作为电极使用,具有储存电荷的功能。本实施例中,第一导电薄膜1与第二导电薄膜3均为透明的ITO(IndiumTinOxide,氧化铟锡)薄膜,ITO薄膜具有良好的导电能力、光学特性、化学稳定性、刻蚀均匀性与合适的表明形状。在其他实施例中,还可以使用其他材料组分的导电薄膜。
本实施例中,第一导电薄膜1与第二导电薄膜3均为矩形,矩形的导电薄膜易于制造;在其他实施例中,第一导电薄膜1与第二导电薄膜3可以根据需要设计为其他形状。第二导电薄膜2的中心与第一导电薄膜1在CF基板上的投影的中心相重合,即从图3所示的方向看,第二导电薄膜3与第一导电薄膜1同心设置。第二导电薄膜3的面积大于第一导电薄膜1的面积,第二导电薄膜3上大于第一导电薄膜1的部分形成一个环状导电薄膜(图未标),所述环状导电薄膜的四边均开设有缺口31。其中,每个缺口31关于其所在的环状导电薄膜的边的中心对称,即每个缺口31以其所在的环状导电薄膜的边的中心为起点,向所述中心的左右两侧等长度延伸。每个缺口31的宽度设置为:在宽度方向上,将所述环状导电薄膜完全切除,以使每个缺口31的一边与第一导电薄膜1的边缘平齐。
本实施例中,使用UV2A技术进行液晶配向。在CF基板和TFT基板上均涂布有一层配向膜(图未示),所述配向膜由聚酰乙胺制成。在其他实施例中,还可以使用其他高分子材料制造所述配向膜。由于UV2A固有的正交垂直光配向方式,在TFT基板的子像素区域的中部,仍然将形成“十”形暗纹,此“十”形暗纹为客观存在,无法消除。但是,在TFT基板的子像素区域的周缘,由于在所述环状导电薄膜各边设置了缺口31,缺口31位置将不再对液晶分子施加边缘电场效应,从而使得液晶分子能够按照UV光的配向方向有序排列而不会产生倾倒方向上的交叉、搭接,最终避免了所述边缘暗纹的形成。图4示出了通过软件模拟得到的TFT基板的子像素区域的暗纹情况。如图4所示,本实施例中的暗纹为“十”形暗纹,而没有所述边缘暗纹。因此,软件模拟的结果证明了本实施例描述的方案确实能够减少暗纹。
本实施例中,对于第二导电薄膜3而言,相对于各边的两端部分,其各边的中间部分对穿透率的影响更大。具体的,在设置缺口31之前,第二导电薄膜3的整条边都将对液晶分子施加所述电场力,所述电场力将导致所述边缘暗纹的产生。然而,第二导电薄膜3各边的两端部分所引发的暗纹,能够被液晶面板中的其他结构所掩盖,因而这部分暗纹将不对整体的穿透率造成很大影响;但第二导电薄膜3各边的中间部分所引发的暗纹,并不能被其他结构掩盖,因而这部分暗纹将极大影响整体的穿透率。因此,本实施例中,通过在第二导电薄膜3各边的中间部分开设缺口31,比起在第二导电薄膜3各边的其他位置开始缺口,能够更好的提升穿透率。
本实施例中,如图5所示,多个第二导电薄膜3对应的多个所述环状导电薄膜相连,多个第一导电薄膜1与多个缺口31均在横向和纵向上阵列分布,从而使得多个像素结构的电极互相导通。
因此,本实施例的液晶面板,通过在CF基板上的第二导电薄膜3的各边设置缺口31,使缺口31在长度方向上关于第一导电薄膜1的边的中心对称分布、使缺口31的一边在宽度方向与第一导电薄膜1的边平齐,消除了缺口31位置对液晶分子的边缘电场效应,避免了边缘暗纹的形成,从而降低了暗纹程度、提升了液晶面板的穿透率和对比度。
本发明实施例还提供了一种液晶显示器,所述液晶显示器具有上述实施例中描述的液晶面板。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易的想到各种等效的修改或替换,这些修改或替换都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以权利要求的保护范围为准。
Claims (8)
1.一种液晶面板,其特征在于,包括相对设置的TFT薄膜晶体管基板和CF彩色滤光片基板,所述TFT基板的每个子像素区域均设有第一导电薄膜,所述CF基板的每个子滤光单元区域均设有与所述第一导电薄膜相对的第二导电薄膜,所述第一导电薄膜与所述第二导电薄膜均为矩形,所述第一导电薄膜的中心投影于所述第二导电薄膜的中心,所述第二导电薄膜的面积大于所述第一导电薄膜的面积,所述第二导电薄膜大于所述第一导电薄膜的区域形成环状导电薄膜,所述环状导电薄膜的各边均开设有缺口,所述缺口的一边与所述第一导电薄膜的一边平齐,且所述缺口关于所述缺口所在的所述环状导电薄膜的边的中心对称。
2.根据权利要求1所述的液晶面板,其特征在于,多个所述第二导电薄膜对应的多个所述环状导电薄膜相连,多个所述第一导电薄膜与多个所述缺口均阵列分布。
3.根据权利要求1或2所述的液晶面板,其特征在于,所述第一导电薄膜与所述第二导电薄膜均为ITO氧化铟锡薄膜。
4.根据权利要求1或2所述的液晶面板,其特征在于,所述TFT基板与所述CF基板上均涂布有由聚酰乙胺制成的配向膜。
5.一种液晶显示器,包括液晶面板,其特征在于,所述液晶面板包括相对设置的TFT薄膜晶体管基板和CF彩色滤光片基板,所述TFT基板的每个子像素区域均设有第一导电薄膜,所述CF基板的每个子滤光单元区域均设有与所述第一导电薄膜相对的第二导电薄膜,所述第一导电薄膜与所述第二导电薄膜均为矩形,所述第一导电薄膜的中心投影于所述第二导电薄膜的中心,所述第二导电薄膜的面积大于所述第一导电薄膜的面积,所述第二导电薄膜大于所述第一导电薄膜的区域形成环状导电薄膜,所述环状导电薄膜的各边均开设有缺口,所述缺口的一边与所述第一导电薄膜的一边平齐,且所述缺口关于所述缺口所在的所述环状导电薄膜的边的中心对称。
6.根据权利要求5所述的液晶显示器,其特征在于,多个所述第二导电薄膜对应的多个所述环状导电薄膜相连,多个所述第一导电薄膜与多个所述缺口均阵列分布。
7.根据权利要求5或6所述的液晶显示器,其特征在于,所述第一导电薄膜与所述第二导电薄膜均为ITO氧化铟锡薄膜。
8.根据权利要求5或6所述的液晶显示器,其特征在于,所述TFT基板与所述CF基板上均涂布有由聚酰乙胺制成的配向膜。
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CN105116644A (zh) * | 2015-10-09 | 2015-12-02 | 深圳市华星光电技术有限公司 | 一种显示装置及其阵列基板 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110764315A (zh) * | 2019-10-28 | 2020-02-07 | 深圳市华星光电技术有限公司 | 液晶配向力仿真方法、系统、设备及存储介质 |
CN110764315B (zh) * | 2019-10-28 | 2022-05-03 | Tcl华星光电技术有限公司 | 液晶配向力仿真方法、系统、设备及存储介质 |
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US10082708B2 (en) | 2018-09-25 |
KR20180132926A (ko) | 2018-12-12 |
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US20180081244A1 (en) | 2018-03-22 |
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