CN103728759A - 彩色液晶显示面板 - Google Patents
彩色液晶显示面板 Download PDFInfo
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Abstract
本发明提供一种彩色液晶显示面板,包括:相互平行设置的数层液晶盒(2)及用于粘接所述数层液晶盒(2)的粘接固件(8),每一所述液晶盒(2)包括一薄膜晶体管基板(20)、一封装基板(30)及密封于所述薄膜晶体管基板(20)与封装基板(30)之间的染料液晶层(40),所述染料液晶层(40)包括液晶材料及二色性染料,每一所述液晶盒(2)中的二色性染料吸收一预定波长范围的光,所述数层液晶盒(2)分别吸收不同波长范围的光。本发明通过在液晶材料中加入二色性染料,利用二色性染料吸收部分颜色的光,进而实现彩色显示,不需要设置现有技术中的偏光片和制作彩色滤光膜基板,降低了液晶显示面板的制造成本以及对背光亮度的要求。
Description
技术领域
本发明涉及液晶显示技术领域,尤其涉及一种彩色液晶显示面板。
背景技术
液晶显示装置(LCD,Liquid Crystal Display)具有机身薄、省电、无辐射等众多优点,得到了广泛的应用。现有市场上的液晶显示装置大部分为背光型液晶显示装置,其包括液晶显示面板及背光模组(backlight module)。液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子,通过在两片玻璃基板上施加驱动电压来控制液晶分子改变方向,将背光模组的光线折射出来产生画面。
通常液晶显示面板由彩色滤光膜(CF,Color Filter)基板、薄膜晶体管(TFT,Thin Film Transistor)基板、夹于彩色滤光膜基板与薄膜晶体管基板之间的液晶(LC,Liquid Crystal)材料及密封胶框(Sealant)组成,其成型工艺一般包括:前段阵列(Array)制程(薄膜、黄光、蚀刻及剥膜)、中段成盒(Cell)制程(薄膜晶体管基板与彩色滤光膜基板贴合)及后段模组组装制程(驱动电路(IC)与印刷电路板压合)。其中,前段阵列(Array)制程主要是形成薄膜晶体管基板,以便于控制液晶分子的运动;中段成盒(Cell)制程主要是在薄膜晶体管基板与彩色滤光膜基板之间添加液晶;后段模组组装制程主要是驱动电路压合与印刷电路板的整合,进而驱动液晶分子转动,显示图像。
就目前主流市场上的液晶显示面板而言,可分为三大类,分别是TN(扭曲向列)/STN(超级扭曲向列),IPS(板内切换)/FFS(边缘切换)及VA(垂直配向)型,其中,垂直配向型液晶显示面板是高端液晶显示领域应用最多的液晶显示面板类型之一,属于广视角液晶显示面板。参见图1,其为现有垂直配向型液晶显示面板的结构示意图,现有的垂直配向型液晶显示面板主要包括由上至下分层配置的上偏光片100、彩色滤光膜基板110、液晶层120、薄膜晶体管基板130、及下偏光片140,各层由上至下顺序层叠在一起组成显示面板。
为实现全彩显示,通常采用在液晶显示面板的一片玻璃(通常为与薄膜晶体管基板玻璃相对设置的上玻璃,也可以为薄膜晶体管基板玻璃)上通过涂布、曝光、显影的办法制成彩色滤光膜基板,利用空间混色原理,实现全彩显示。
但是彩色滤光膜基板只可以让部分波段的光线通过,且需要借助偏光片的对光线进行偏振,所以通过彩色滤光膜基板之后的光强会衰减为原来的约33%,这是目前LCD光效率较低的原因之一,同时,由于需要设置偏光片且需要涂布、曝光、显影等一系列制程才能制成彩色滤光膜基板,不利于生产成本的管控。
发明内容
本发明的目的在于提供一种彩色液晶显示面板,通过在液晶材料中加入二色性染料,利用二色性染料吸收部分颜色的光,进而实现彩色显示,不需要设置现有技术中的偏光片和制作彩色滤光膜基板,降低了液晶显示面板的制造成本以及对背光亮度的要求,提高光穿透率及光效率。
为实现上述目的,本发明提供一种彩色液晶显示面板,包括:相互平行设置的数层液晶盒及用于粘接所述数层液晶盒的粘接固件,每一所述液晶盒包括一薄膜晶体管基板、一封装基板及密封于所述薄膜晶体管基板与封装基板之间的染料液晶层,所述染料液晶层包括液晶材料及二色性染料,每一所述液晶盒中的二色性染料吸收一预定波长范围的光,所述数层液晶盒分别吸收不同波长范围的光。
所述液晶材料为负型介电各向异性液晶材料;所述粘接固件为光学透明胶水或双面胶。
所述薄膜晶体管基板包括一第一透明基板、形成于所述第一透明基板上的数根栅极线、形成于所述第一透明基板上的数根数据线、形成于所述第一透明基板上的薄膜晶体管阵列、形成于所述薄膜晶体管阵列上的数个像素电极、形成于所述像素电极及薄膜晶体管阵列上的第一平坦化层及形成于所述第一平坦化层上的第一配向层。
所述第一透明基板为玻璃基板,所述像素电极由氧化铟锡制成,所述第一配向层为垂直配向层。
所述封装基板包括一第二透明基板、形成于所述第二透明基板上的黑色矩阵、形成于所述第二透明基板及黑色矩阵上的第二平坦化层、形成于所述第二平坦化层上的公共电极、形成于所述公共电极上的第二配向层及形成于所述第二配向层上的光阻材料层,所述黑色矩阵、栅极线、数据线及薄膜晶体管阵列相互配合将该彩色液晶显示面板划分为数个像素。
所述第二透明基板为玻璃基板,所述公共电极由氧化铟锡制成,所述第二配向层为垂直配向层。
所述液晶材料中含有液晶分子,所述二色性染料中含有二色性染料分子,所述二色性染料分子具有与所述液晶分子的分子结构相类似的分子结构。
当不施加驱动电压于所述薄膜晶体管基板与封装基板时,所述液晶分子与所述二色性染料分子均垂直于所述薄膜晶体管基板的表面与所述封装基板的表面排列,此时,所述液晶分子与所述二色性染料分子不吸收光线。
当施加驱动电压于所述薄膜晶体管基板与封装基板时,所述液晶分子与所述二色性染料分子均与所述薄膜晶体管基板的表面及所述封装基板的表面呈一定角度排列,所述一定角度大于或等于0°,且小于90°,此时,所述二色性染料分子选择性吸收部分光线。
所述数层液晶盒的层数为三层,分别为第一至第三层液晶盒,所述第一层液晶盒中的二色性染料吸收红色波长范围的光,所述第二层液晶盒中的二色性染料吸收绿色波长范围的光,所述第三层液晶盒中的二色性染料吸收蓝色波长范围的光。
本发明有益效果:本发明的彩色液晶显示面板,将具有特定吸收光谱的二色性染料加入至液晶材料中,以形成可吸收预定波长范围的光的染料液晶层,对背光源发出的光线进行选择性吸收,从而提供色彩显示,并通过堆叠多层吸收不同波长范围的光的染料液晶层来实现彩色显示,即不需要设置现有技术中的偏光片和制作彩色滤光膜基板就可实现彩色显示,降低了液晶显示面板的制造成本以及对背光亮度的要求,提高光穿透率及光效率。
附图说明
下面结合附图,通过对本发明的具体实施方式详细描述,将使本发明的技术方案及其他有益效果显而易见。
附图中,
图1为现有的彩色液晶显示面板的结构示意图;
图2为本发明彩色液晶显示面板的结构示意图;
图3为图2中液晶盒的结构示意图;
图4为图3中薄膜晶体管基板的俯视图;
图5为图3中封装基板的俯视图;
图6至图9为本发明彩色液晶显示面板单一颜色显示原理示意图;
图10至图14为本发明彩色液晶显示面板一较佳实施例的颜色显示原理示意图;
图15为色彩减法原理示意图。
具体实施方式
请参阅图2至图5,本发明提供一种彩色液晶显示面板,包括:数层液晶盒2及用于粘接所述数层液晶盒2的粘接固件8;每一所述液晶盒2包括一薄膜晶体管基板20、一封装基板30及密封于所述薄膜晶体管基板20与封装基板30之间的染料液晶层40,所述染料液晶层40包括液晶材料及二色性染料,每一所述液晶盒2中的二色性染料吸收一预定波长范围的光,所述数层液晶盒2分别吸收不同波长范围的光。
所述液晶材料为负型介电各向异性液晶材料,所述二色性染料能吸收预定波长范围的光线。所述粘接固件8可为光学透明胶水、双面胶或其他透明粘接固件。
如图3及图4所示,所述薄膜晶体管基板20包括一第一透明基板21、形成于所述第一透明基板21上的数根栅极线22、形成于所述第一透明基板21上的数根数据线23、形成于所述第一透明基板21上的薄膜晶体管24阵列、形成于所述薄膜晶体管24阵列上的数个像素电极26、形成于所述像素电极26及薄膜晶体管24阵列上的第一平坦化层27及形成于所述第一平坦化层27上的第一配向层28。
所述第一透明基板21可以为玻璃基板或塑料基板,本实施例中优选为玻璃基板。
所述薄膜晶体管24具有一栅极、一源极及一漏极,所述薄膜晶体管24的栅极与所述栅极线22电性连接,所述薄膜晶体管24的源极与所述数据线23电性连接,所述薄膜晶体管24的漏极与所述像素电极26电性连接。所述像素电极26优选为由氧化铟锡制成。所述第一配向层28为垂直配向层。
如图3及图5所示,所述封装基板30包括一第二透明基板31、形成于所述第二透明基板31上的数个黑色矩阵32、形成于所述第二透明基板31及黑色矩阵32上的第二平坦化层37、形成于所述第二平坦化层37上的公共电极36、形成于所述公共电极36上的第二配向层38及形成于所述第二配向层38上的光阻材料层33。所述黑色矩阵32、栅极线22、数据线23及薄膜晶体管24阵列相互配合将该彩色液晶显示面板划分为数个像素。
所述第二透明基板31可以为玻璃基板或塑料基板,本实施例中为优选玻璃基板。
所述黑色矩阵(Black Matrix)32用于遮光,使不该透光的位置为黑色。
所述公共电极36优选为由氧化铟锡制成。
如图3及图6所示,所述液晶材料中含有液晶分子42,所述二色性染料中含有二色性染料分子44,所述二色性染料分子44具有与所述液晶分子42的分子结构相类似的分子结构;所述第二配向层38为垂直配向层,所述第二配向层38与第一配向层28使液晶分子42和二色性染料分子44在初始状态时垂直于所述薄膜晶体管基板20或封装基板30排列,即在不施加驱动电压于所述薄膜晶体管基板20与封装基板30时,液晶分子42和二色性染料分子44垂直于所述薄膜晶体管基板20或封装基板30排列。
所述光阻材料层(Photo Spacer)33用于使所述薄膜晶体管基板20与封装基板30保存一定距离,从而使位于所述薄膜晶体管基板20与封装基板30之间的染料液晶层40中的分子分布均匀,防止因液晶厚度不均造成显示影像模糊。
请参阅图6至图9,为本发明彩色液晶显示面板的单一颜色显示原理,所述染料液晶层40由一定量的二色性染料(Dichroic dye)溶解于液晶材料中得到,因此,所述液晶材料含有液晶分子42,所述二色性染料含有二色性染料分子44。所述二色性染料分子44与所述液晶分子42具有相类似的分子结构,所述二色性染料分子44的特征为:当可见光线行进方向与二色性染料分子44长轴平行时,二色性染料分子44对可见光线基本不吸收;当可见光线行进方向与二色性染料分子44长轴垂直时,二色性染料分子44对可见光线产生强烈吸收。因此,可以通过控制二色性染料分子44与背光源(未图示)发出光线的夹角来调节二色性染料分子44对背光源发出光线的吸收强度,起到调节透射光强的作用,实现显示不同灰阶的目的。
如图6所示,当不施加驱动电压于所述薄膜晶体管基板20与封装基板30时,所述液晶分子42与所述二色性染料分子44均垂直于所述薄膜晶体管基板20或所述封装基板30表面排列,由于液晶分子42对可见光基本不吸收,而二色性染料分子44的长轴与背光源发出的光线行进方向平行,因此二色性染料分子44对背光源发出的光线61也基本不产生吸收,吸收光谱示意图如图7所示,由此可知,在不施加驱动电压于所述薄膜晶体管基板20与封装基板30的情况下,背光源发出的光线61大部分都能透过液晶显示面板,整个液晶显示面板呈现亮态。
如图8所示,当施加驱动电压于所述薄膜晶体管基板20与封装基板30时,在电场作用下所述液晶分子42与二色性染料分子44均与所述薄膜晶体管基板20的表面或所述封装基板30的表面呈一定角度排列,此时,所述二色性染料分子44选择性吸收部分光线,所述一定角度大于或等于0°,且小于90°,调节施加驱动电压的大小可以控制液晶分子42和二色性染料分子44与所述薄膜晶体管基板20的表面或所述封装基板30的表面的夹角大小。当所述液晶分子42和二色性染料分子44与所述薄膜晶体管基板20的表面或所述封装基板30的表面的夹角为0°时,即在电场作用下所述液晶分子42与二色性染料分子44均倾倒且均沿所述薄膜晶体管基板20或封装基板30表面排列时,二色性染料分子44的长轴与背光源发出的光线61行进方向垂直,二色性染料分子44对背光源发出的光线61强烈吸收,吸收光谱示意图如图9所示,由于二色性染料具有特定的吸收光谱,因此可使透射光线62产生特定的颜色,形成色彩显示。
请参阅图10至图15,为本发明彩色液晶显示面板一具体实施例的颜色显示原理。本实施例中,所述彩色液晶显示面板包括三层液晶盒,分别为第一至第三层液晶盒3、4、5,第一层液晶盒3中的二色性染料吸收红色波长范围的光,第二层液晶盒4中的二色性染料吸收绿色波长范围的光,第三层液晶盒5中的二色性染料吸收蓝色波长范围的光。
如图10所示,当不在所述第一层液晶盒3、第二层液晶盒4、第三层液晶盒5中任何一个的两基板之间施加驱动电压时,即三层液晶盒均呈OFF状态时,背光源发出的光线61基本都不被吸收,因而背光源发出的光线61大部分都能透过液晶显示面板,整个液晶显示面板呈现亮态。
如图11所示,当仅在所述第一层液晶盒3的两基板之间施加驱动电压时,即仅有第一层液晶盒3呈ON状态时,只有红色光被吸收,其他颜色光均透过液晶显示面板,透过的光线混合形成藏青色(Cyan)光线63,因而仅有第一层液晶盒3呈ON状态时,液晶显示面板呈藏青色(Cyan)。
如图12所示,当仅在所述第二层液晶盒4的两基板之间施加驱动电压时,即仅有第二层液晶盒4呈ON状态时,只有绿色光被吸收,其他颜色光均透过液晶显示面板,透过的光线混合形成洋红色(Magenta)光线64,因而仅有第二层液晶盒4呈ON状态时,液晶显示面板呈洋红色(Magenta)。
如图13所示,当仅在所述第三层液晶盒5的两基板之间施加驱动电压时,即仅有第三层液晶盒5呈ON状态时,只有蓝色光被吸收,其他颜色光均透过液晶显示面板,透过的光线混合形成黄色(Yellow)光线65,因而仅有第三层液晶盒5呈ON状态时,液晶显示面板呈黄色(Yellow)。
如图14所示,当三层液晶盒的两基板之间都被施加驱动电压时,即三层液晶盒均呈ON状态时,红色光、绿色光及蓝色光均被吸收,每一层液晶盒中的二色性染料的吸收光谱均不同,三种二色性染料的吸收光谱谱叠加之后可以覆盖整个可见光波段,因而背光源发出的光线61大部分都被吸收,整个液晶显示面板呈现暗态。
除上述几种颜色显示之外,本发明液晶显示面板还可利用色彩减法原理实现更多种颜色显示,进而实现彩色显示。色彩减法原理如图15所示,当藏青色71与洋红色72混合后为红色77,当藏青色71与黄色73混合后为绿色78,当洋红色72与黄色73混合后为蓝色79,当藏青色71、洋红色72及黄色73三种颜色混合后为黑色75。因此,本实施例中,可以选择性地施加驱动电压于所述第一层液晶盒3、第二层液晶盒4及第三层液晶盒5的两基板之间,得到两种或两种以上颜色混合的光线,进而实现液晶显示面板的彩色显示。
综上所述,本发明的彩色液晶显示面板,将具有特定吸收光谱的二色性染料加入至液晶材料中,以形成可吸收预定波长范围的光的染料液晶层,对背光源发出的光线进行选择性吸收,从而提供色彩显示,并通过堆叠多层吸收不同波长范围的光的染料液晶层来实现彩色显示,即不需要设置现有技术中的偏光片和制作彩色滤光片膜基板就可实现彩色显示,降低了液晶显示面板的制造成本以及对背光亮度的要求,提高光穿透率及光效率。
以上所述,对于本领域的普通技术人员来说,可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形,而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。
Claims (10)
1.一种彩色液晶显示面板,其特征在于,包括:相互平行设置的数层液晶盒(2)及用于粘接所述数层液晶盒(2)的粘接固件(8),每一所述液晶盒(2)包括一薄膜晶体管基板(20)、一封装基板(30)及密封于所述薄膜晶体管基板(20)与封装基板(30)之间的染料液晶层(40),所述染料液晶层(40)包括液晶材料及二色性染料,每一所述液晶盒(2)中的二色性染料吸收一预定波长范围的光,所述数层液晶盒(2)分别吸收不同波长范围的光。
2.如权利要求1所述的彩色液晶显示面板,其特征在于,所述液晶材料为负型介电各向异性液晶材料;所述粘接固件(8)为光学透明胶水或双面胶。
3.如权利要求1所述的彩色液晶显示面板,其特征在于,所述薄膜晶体管基板(20)包括一第一透明基板(21)、形成于所述第一透明基板(21)上的数根栅极线(22)、形成于所述第一透明基板(21)上的数根数据线(23)、形成于所述第一透明基板(21)上的薄膜晶体管(24)阵列、形成于所述薄膜晶体管(24)阵列上的数个像素电极(26)、形成于所述像素电极(26)及薄膜晶体管(24)阵列上的第一平坦化层(27)及形成于所述第一平坦化层(27)上的第一配向层(28)。
4.如权利要求3所述的彩色液晶显示面板,其特征在于,所述第一透明基板(21)为玻璃基板,所述像素电极(26)由氧化铟锡制成,所述第一配向层(28)为垂直配向层。
5.如权利要求3所述的彩色液晶显示面板,其特征在于,所述封装基板(30)包括一第二透明基板(31)、形成于所述第二透明基板(31)上的黑色矩阵(32)、形成于所述第二透明基板(31)及黑色矩阵(32)上的第二平坦化层(37)、形成于所述第二平坦化层(37)上的公共电极(36)、形成于所述公共电极(36)上的第二配向层(38)及形成于所述第二配向层(38)上光阻材料层(33),所述黑色矩阵(32)、栅极线(22)、数据线(23)及薄膜晶体管(24)阵列相互配合将该彩色液晶显示面板划分为数个像素。
6.如权利要求5所述的彩色液晶显示面板,其特征在于,所述第二透明基板(31)为玻璃基板,所述公共电极(36)由氧化铟锡制成,所述第二配向层(38)为垂直配向层。
7.如权利要求1所述的彩色液晶显示面板,其特征在于,所述液晶材料中含有液晶分子(42),所述二色性染料中含有二色性染料分子(44),所述二色性染料分子(44)具有与所述液晶分子(42)的分子结构相类似的分子结构。
8.如权利要求7所述的彩色液晶显示面板,其特征在于,当不施加驱动电压于所述薄膜晶体管基板(20)与封装基板(30)时,所述液晶分子(42)与所述二色性染料分子(44)均垂直于所述薄膜晶体管基板(20)的表面与所述封装基板(30)的表面排列,此时,所述液晶分子(42)与所述二色性染料分子(44)不吸收光线。
9.如权利要求7所述的彩色液晶显示面板,其特征在于,当施加驱动电压于所述薄膜晶体管基板(20)与封装基板(30)时,所述液晶分子(42)与所述二色性染料分子(44)均与所述薄膜晶体管基板(20)的表面及所述封装基板(30)的表面呈一定角度排列,所述一定角度大于或等于0°,且小于90°,此时,所述二色性染料分子(44)选择性吸收部分光线。
10.如权利要求1所述的彩色液晶显示面板,其特征在于,所述数层液晶盒(2)的层数为三层,分别为第一至第三层液晶盒(3、4、5),所述第一层液晶盒(3)中的二色性染料吸收红色波长范围的光,所述第二层液晶盒(4)中的二色性染料吸收绿色波长范围的光,所述第三层液晶盒(5)中的二色性染料吸收蓝色波长范围的光。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310625551.2A CN103728759A (zh) | 2013-11-28 | 2013-11-28 | 彩色液晶显示面板 |
| PCT/CN2013/088359 WO2015078026A1 (zh) | 2013-11-28 | 2013-12-02 | 彩色液晶显示面板 |
| US14/236,701 US9772531B2 (en) | 2013-11-28 | 2013-12-02 | Color liquid crystal display panel |
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| CN201310625551.2A CN103728759A (zh) | 2013-11-28 | 2013-11-28 | 彩色液晶显示面板 |
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| CN103728759A true CN103728759A (zh) | 2014-04-16 |
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| CN201310625551.2A Pending CN103728759A (zh) | 2013-11-28 | 2013-11-28 | 彩色液晶显示面板 |
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| Country | Link |
|---|---|
| US (1) | US9772531B2 (zh) |
| CN (1) | CN103728759A (zh) |
| WO (1) | WO2015078026A1 (zh) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI560501B (en) * | 2015-06-10 | 2016-12-01 | Sumika Technology Co Ltd | Display device |
| WO2021088152A1 (zh) * | 2019-11-07 | 2021-05-14 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及其制备方法、显示装置 |
| CN115236914A (zh) * | 2022-07-18 | 2022-10-25 | 华南师范大学 | 一种基于二色性染料液晶的信号转换器 |
| WO2023000965A1 (zh) * | 2021-07-23 | 2023-01-26 | 京东方科技集团股份有限公司 | 一种调光玻璃及玻璃组件 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728765A (zh) * | 2013-11-28 | 2014-04-16 | 深圳市华星光电技术有限公司 | 彩色液晶显示面板及其制作方法 |
| KR102532304B1 (ko) * | 2016-02-23 | 2023-05-15 | 삼성디스플레이 주식회사 | 디스플레이 장치 |
| US20220226536A1 (en) * | 2019-02-04 | 2022-07-21 | T.J.Smith And Nephew,Limited | Wound contact layer and dressing for iodine delivery |
| CN116880091A (zh) * | 2019-05-17 | 2023-10-13 | 群创光电股份有限公司 | 电子装置的制造方法 |
| CN112130358A (zh) * | 2020-03-06 | 2020-12-25 | 珠海市绮光科技有限公司 | 一种可变多彩色的液晶调光膜 |
| CN114815414B (zh) * | 2022-05-16 | 2023-10-24 | 京东方科技集团股份有限公司 | 显示面板、显示装置及显示面板的制备方法 |
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| TWI560501B (en) * | 2015-06-10 | 2016-12-01 | Sumika Technology Co Ltd | Display device |
| CN106249462A (zh) * | 2015-06-10 | 2016-12-21 | 住华科技股份有限公司 | 显示装置 |
| CN106249462B (zh) * | 2015-06-10 | 2019-09-17 | 住华科技股份有限公司 | 显示装置 |
| WO2021088152A1 (zh) * | 2019-11-07 | 2021-05-14 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及其制备方法、显示装置 |
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| WO2023000965A1 (zh) * | 2021-07-23 | 2023-01-26 | 京东方科技集团股份有限公司 | 一种调光玻璃及玻璃组件 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9772531B2 (en) | 2017-09-26 |
| WO2015078026A1 (zh) | 2015-06-04 |
| US20160195754A1 (en) | 2016-07-07 |
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