CN105733557B - 配体修饰量子点材料、液晶显示面板的制作方法及液晶显示面板 - Google Patents
配体修饰量子点材料、液晶显示面板的制作方法及液晶显示面板 Download PDFInfo
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- CN105733557B CN105733557B CN201610257620.2A CN201610257620A CN105733557B CN 105733557 B CN105733557 B CN 105733557B CN 201610257620 A CN201610257620 A CN 201610257620A CN 105733557 B CN105733557 B CN 105733557B
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- 125000000217 alkyl group Chemical group 0.000 claims description 27
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 27
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 27
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Abstract
本发明提供一种配体修饰量子点材料、液晶显示面板的制作方法及液晶显示面板。本发明的配体修饰量子点材料,可在紫外光照射下与配体修饰量子点材料发生聚合反应,生成聚合物,沉积于基板上形成可取代PI配向膜的聚合物薄膜,简化了液晶的配向制程,节约成本,同时可通过锚定于聚合物薄膜中的量子点改善液晶显示面板的显示品质。本发明的液晶显示面板的制作方法,省去了PI配向膜制程,制程简单,生产成本低,且制得的液晶显示面板具有较好的显示品质。本发明的液晶显示面板,采用由配体修饰量子点材料与可聚合单体聚合得到的聚合物薄膜来取代PI配向膜,大大提高了面板的品质,且制作成本低。
Description
技术领域
本发明涉及显示技术领域,尤其涉及一种配体修饰量子点材料、液晶显示面板的制作方法、及液晶显示面板。
背景技术
随着显示技术的发展,液晶显示器(Liquid Crystal Display,LCD)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点,而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品,成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示器,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,两片玻璃基板中间有许多垂直和水平的细小电线,通过通电与否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膜(CF,Color Filter)基板、薄膜晶体管(TFT,Thin FilmTransistor)基板、夹于彩膜基板与薄膜晶体管基板之间的液晶(LC,Liquid Crystal)及密封胶框(Sealant)组成。
在液晶显示器的CF基板和TFT基板上,分别有一层薄膜材料,其主要作用是使液晶分子按一定方向排列,我们称之为配向膜(常用聚酰亚胺(PI)材料)。这种配相膜的主要成分为摩擦配向型PI材料或光配向型PI材料,但是,无论那种配向材料都会有各自的缺点。首先摩擦配向型PI材料容易造成粉尘颗粒、静电残留、刷痕等问题,从而降低工艺良率,而光配向型PI材料虽然可以避免这些问题,但由于材料特性受限,耐热性和耐老化性不佳,同时锚定LC分子的能力也较弱,从而影响面板的品质;其次,PI材料本身就具有高极性和高吸水性,存储和运送容易造成变质而导致配向不均,并且PI材料价格昂贵,在TFT-LCD上成膜的工艺也较为复杂,导致面板成本提高。
然而,配向膜除具有液晶配向的作用外,还可以起到防止上下基板中的离子等杂质扩散到液晶中影响液晶的品质;因此,若将液晶显示面板中的配向膜省去,除了液晶分子无法排列外,面板的品质也会大大衰减。
当前出现的新材料量子点以其优异的发光特性,为显示行业带来了新的色彩发展空间。量子点以其优异的发光性能,诸如窄发光峰,可调谐的发光波段,高的内量子效率为显示行业揭开可更艳丽的一章。量子点液晶材料是一类重要的液晶材料,但是量子点加入到液晶中存在量子点扩散不均、在液晶中容易析出、及发光效率低等问题。
发明内容
本发明的首要目的在于提供一种配体修饰量子点材料,可与可聚合单体发生聚合反应,生成聚合物,沉积于基板上形成可取代PI配向膜的聚合物薄膜,简化了液晶的配向制程,节约成本,同时可改善液晶显示面板的显示品质。
本发明的另一目的在于提供一种液晶显示面板的制作方法,省去了PI配向膜制程,制程简单,生产成本低,且制得的液晶显示面板具有较好的显示品质。
本发明的又一目的在于提供一种液晶显示面板,采用由配体修饰量子点材料和可聚合单体聚合得到的聚合物薄膜来取代PI配向膜,大大提高了面板的品质,且制作成本低。
为实现上述目的,本发明提供一种配体修饰量子点材料,包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构通式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
所述配体修饰剂包括以下化合物中的一种或多种:
本发明还提供一种液晶显示面板的制作方法,包括以下步骤:
步骤1、提供一上基板、一下基板、及液晶材料;
所述上基板包括第一基板、及设于第一基板上的第一电极;所述下基板包括第二基板、及设于第二基板上的第二电极;
所述液晶材料包括包括液晶分子、配体修饰量子点材料、及可聚合单体;
所述配体修饰量子点材料包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
步骤2、在所述上基板或者下基板上滴注液晶材料,在所述下基板或者上基板的周边位置涂布密封胶,之后将所述上基板与下基板组立贴合,并对所述密封胶进行固化;
所述液晶材料中的配体修饰量子点材料由于难溶于液晶分子中从而沉积于所述上基板和下基板上,并通过其上的配体修饰剂的基团B-R引导液晶分子垂直于所述上基板和下基板排列;
步骤3、通过第一电极和第二电极对液晶材料两侧施加电压,使液晶分子发生偏转,沿倾斜于所述上基板和下基板的方向排列;
步骤4、在对液晶材料施加电压的情况下,从所述上基板或下基板一侧对液晶材料进行紫外光照射,通过其上的配体修饰剂使所述液晶材料中的配体修饰量子点材料与可聚合单体发生聚合反应,生成聚合物,所述聚合物沉积在所述上基板上朝向液晶材料的一侧形成第一聚合物薄膜,同时沉积在所述下基板上朝向液晶材料的一侧形成第二聚合物薄膜,所述第一聚合物薄膜与第二聚合物薄膜的表面均具有多个聚合物凸起,从而在撤去电压后以空间障碍的方式使第一聚合物薄膜和第二聚合物薄膜附近的液晶分子维持其倾斜方向;
去除配体修饰量子点材料与可聚合单体的液晶材料构成液晶层。
所述配体修饰剂包括以下化合物中的一种或多种:
所述液晶材料中,所述液晶分子的质量百分比为93.0%~99.4%,所述配体修饰量子点材料的质量百分比为0.5%~5.0%,所述可聚合单体的质量百分比为0.01%~2.0%。
所述步骤3中,对液晶材料两侧施加的电压大小为13~25V;所述步骤4的紫外光照射中,所述紫外光的照度为85~100mW/cm2,照射时间为20~30min。
所述第一聚合物薄膜与第二聚合物薄膜的厚度为
本发明又提供一种液晶显示面板,包括相对设置的上基板、下基板、设于上、下基板之间的液晶层、设于所述上基板朝向液晶层一侧表面的第一聚合物薄膜、及设于所述下基板朝向液晶层一侧表面的第二聚合物薄膜;所述上基板包括第一基板、及设于第一基板上的第一电极;所述下基板包括第二基板、及设于第二基板上的第二电极;
所述液晶层包括液晶分子;
所述第一聚合物薄膜与第二聚合物薄膜均由可聚合单体与配体修饰量子点材料聚合而成,且所述第一聚合物薄膜与第二聚合物薄膜的表面均具有多个聚合物凸起,从而使所述液晶层中靠近所述第一聚合物薄膜和第二聚合物薄膜的液晶分子沿倾斜于所述上基板和下基板的方向排列;
所述配体修饰量子点材料包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
所述配体修饰剂包括以下化合物中的一种或多种:
所述第一聚合物薄膜与第二聚合物薄膜的厚度为
本发明的有益效果:本发明提供的一种配体修饰量子点材料,可在紫外光照射下与可聚合单体发生聚合反应,生成聚合物,沉积于基板上形成可取代PI配向膜的聚合物薄膜,简化了液晶的配向制程,节约成本,同时可嵌于聚合物薄膜中的量子点改善液晶显示面板的显示品质,并解决量子点在液晶材料中扩散不均、容易析出、及发光效率低的问题。本发明提供的一种液晶显示面板的制作方法,省去了PI配向膜制程,制程简单,生产成本低,且制得的液晶显示面板具有较好的显示品质。本发明提供的一种液晶显示面板,采用由配体修饰量子点材料与可聚合单体聚合得到的聚合物薄膜来取代PI配向膜,既达到了液晶配向的目的,又能够防止TFT基板和CF基板中的杂质离子扩散到液晶层中,大大提高了面板的品质,且制作成本低;通过在聚合物薄膜中引入量子点材料,可提高光源利用率,获得更高纯度的色光、实现彩色显示的高色域和低功耗。
为了能更进一步了解本发明的特征以及技术内容,请参阅以下有关本发明的详细说明与附图,然而附图仅提供参考与说明用,并非用来对本发明加以限制。
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它有益效果显而易见。
附图中,
图1为本发明的配体修饰量子点材料的结构示意图;
图2为本发明的液晶显示面板的制作方法的示意流程图;
图3为本发明的液晶显示面板的制作方法的步骤1-2的示意图;
图4为本发明的液晶显示面板的制作方法的步骤3的示意图;
图5为本发明的液晶显示面板的制作方法的步骤4的示意图;
图6为本发明的液晶显示面板的结构示意图;
图7为图6的液晶显示面板中的第一与第二聚合物薄膜的表面形貌的扫描电镜示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1,本发明提供一种配体修饰量子点材料,包括量子点(QDs)、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构通式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
具体的,所述配体修饰量子点材料32包含可聚合基团L,使得配体修饰量子点材料32可与液晶材料中的可聚合单体发生反应,生成聚合物薄膜,使量子点锚定在聚合物薄膜中,解决量子点材料容易在液晶中析出的问题。
具体的,所述配体修饰剂包括以下化合物中的一种或多种:
具体的,所述量子点为CdX、PbX、ZnX、HgX、GaX、和InX中的一种、或者由CdX、PbX、ZnX、HgX、GaX、和InX中的多种组合形成的核壳结构,其中X为S、Se、或Te。具体的,所述量子点的尺寸为1-30nm。
请参阅图2,本发明还提供一种液晶显示面板的制作方法,包括以下步骤:
步骤1、请参阅图3,提供一上基板1、一下基板2、及液晶材料;
所述上基板1包括第一基板11、及设于第一基板11上的第一电极12;所述下基板2包括第二基板21、及设于第二基板21上的第二电极22;
所述液晶材料包括包括液晶分子31、配体修饰量子点材料32、及可聚合单体(RM)33;
所述配体修饰量子点材料32包括量子点(QDs)、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构通式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
具体的,所述配体修饰剂包括以下化合物中的一种或多种:
具体的,所述量子点为CdX、PbX、ZnX、HgX、GaX、和InX中的一种、或者由CdX、PbX、ZnX、HgX、GaX、和InX中的多种组合形成的核壳结构,其中X为S、Se、或Te。具体的,所述量子点的尺寸为1-30nm。
具体的,所述液晶材料中,所述液晶分子31的质量百分比为93.0%~99.4%,所述配体修饰量子点材料32的质量百分比为0.5%~5.0%,所述可聚合单体33的质量百分比为0.01%~2.0%。
具体的,所述可聚合单体33包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、苯乙烯、苯乙烯衍生物、及环氧树脂中的一种或多种的组合;其中,所述环氧树脂可以为脂肪胺类环氧树脂。
优选的,所述液晶材料还包括光引发剂,所述光引发剂的质量百分比为0.1%~0.5%。
具体的,所述光引发剂(Initiator)包括偶氮二异丁腈、过氧化二烷类化合物、过氧化二酰类化合物以及过氧化脂类化合物的一种或多种的组合。
具体的,所述液晶分子31为包括以下化合物中的一种或多种:
具体的,所述上基板1与下基板2分别为TFT基板和CF基板;所述第一电极12与第二电极22分别为像素电极与公共电极。
步骤2、请参阅图3,在所述上基板1或者下基板2上滴注液晶材料,在所述下基板2或者上基板1的周边位置涂布密封胶4,之后将所述上基板1与下基板2组立贴合,并对所述密封胶4进行固化;
所述液晶材料中的配体修饰量子点材料32由于难溶于液晶分子31中从而沉积于所述上基板1和下基板2上,并通过其上的配体修饰剂的中部和尾部基团B-R引导液晶分子31垂直于所述上基板1和下基板2排列。
优选的,所述步骤2中,在所述下基板2或者上基板1的周边位置涂布密封胶4后,还在所述密封胶4的外围涂布导电胶(未图示)。
优选的,所述步骤2中,在真空环境下将所述上基板1与下基板2组立贴合。
具体的,所述步骤2中,采用加热或紫外(UV)光照射的方法对所述密封胶4进行固化。
步骤3、如图4所示,通过第一电极11和第二电极21对液晶材料两侧施加电压,使液晶分子31发生偏转,沿倾斜于所述上基板1和下基板2的方向排列。
具体的,所述步骤3中,对液晶材料两侧施加的电压大小为13~25V。
步骤4、如图5所示,在对液晶材料施加电压的情况下,从所述上基板1或下基板2一侧对液晶材料进行紫外光照射,使所述液晶材料中的配体修饰量子点材料32通过其上的配体修饰剂与可聚合单体33发生聚合反应,生成聚合物,所述聚合物沉积在所述上基板1上朝向液晶材料的一侧形成第一聚合物薄膜41,同时沉积在所述下基板2上朝向液晶材料的一侧形成第二聚合物薄膜42,所述第一聚合物薄膜41与第二聚合物薄膜42的表面均具有多个聚合物凸起,从而在撤去电压后以空间障碍的方式使第一聚合物薄膜41和第二聚合物薄膜42附近的液晶分子31维持其倾斜方向,实现对液晶分子31的配向;
如图6所示,去除配体修饰量子点材料32与可聚合单体33的液晶材料构成液晶层3,完成液晶显示面板的制作。
具体的,所述步骤4的紫外光照射中,所述紫外光的照度为85~100mW/cm2,照射时间为20~30min。
优选的,所述步骤4中,从所述上基板1(即TFT基板)一侧对所述液晶材料进行紫外光照射。这是因为TFT基板相较于CF基板具有更高的透光率,可提高紫外光的透过率,提升紫外光照射的效果。
具体的,所述第一聚合物薄膜41与第二聚合物薄膜42的厚度为 图7为所述第一聚合物薄膜41与第二聚合物薄膜42的表面形貌的扫描电镜示意图,从图7中可见,所述第一聚合物薄膜41与第二聚合物薄膜42均具有粗糙表面。
请参阅图6,本发明还提供一种液晶显示面板,包括相对设置的上基板1、下基板2、设于上、下基板1、2之间的液晶层3、设于所述上基板1朝向液晶层3一侧表面的第一聚合物薄膜41、及设于所述下基板2朝向液晶层3一侧表面的第二聚合物薄膜42;所述上基板1包括第一基板11、及设于第一基板11上的第一电极12;所述下基板2包括第二基板21、及设于第二基板21上的第二电极22;
所述液晶层3包括液晶分子31;
所述第一聚合物薄膜41与第二聚合物薄膜42均由可聚合单体33与配体修饰量子点材料32聚合而成,且所述第一聚合物薄膜41与第二聚合物薄膜42的表面均具有多个聚合物凸起,从而使得液晶分子31具有一定的预倾角,即所述液晶层3中靠近所述第一聚合物薄膜41和第二聚合物薄膜42的液晶分子31沿倾斜于所述上基板1和下基板2的方向排列;
所述配体修饰量子点材料32包括量子点(QDs)、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构通式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是或其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
具体的,所述配体修饰剂包括以下化合物中的一种或多种:
具体的,所述量子点为CdX、PbX、ZnX、HgX、GaX、和InX中的一种、或者由CdX、PbX、ZnX、HgX、GaX、和InX中的多种组合形成的核壳结构,其中X为S、Se、或Te。具体的,所述量子点的尺寸为1-30nm。
具体的,所述第一聚合物薄膜41与第二聚合物薄膜42的厚度为 图7为所述第一聚合物薄膜41与第二聚合物薄膜42的表面形貌的扫描电镜示意图,从图7中可见,所述第一聚合物薄膜41与第二聚合物薄膜42均具有粗糙表面。
具体的,所述可聚合单体33包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、苯乙烯、苯乙烯衍生物、及环氧树脂中的一种或多种的组合;其中,所述环氧树脂可以为脂肪胺类环氧树脂。
具体的,所述液晶分子31为包括以下化合物中的一种或多种:
具体的,所述液晶显示面板还包括设于所述上基板1与下基板2之间且位于液晶层3外围的密封胶4。优选的,所述液晶显示面板还包括位于所述密封胶4外围的导电胶(未图示)。
具体的,所述上基板1与下基板2分别为TFT基板和CF基板;所述第一电极12与第二电极22分别为像素电极与公共电极。
综上所述,本发明提供一种配体修饰量子点材料、液晶显示面板的制作方法、及液晶显示面板。本发明的配体修饰量子点材料,可在紫外光照射下与配体修饰量子点材料发生聚合反应,生成聚合物,沉积于基板上形成可取代PI配向膜的聚合物薄膜,简化了液晶的配向制程,节约成本,同时可改善液晶显示面板的显示品质。本发明的液晶显示面板的制作方法,省去了PI配向膜制程,制程简单,生产成本低,且制得的液晶显示面板具有较好的显示品质。本发明的液晶显示面板,采用由配体修饰量子点材料与可聚合单体聚合得到的聚合物薄膜来取代PI配向膜,既达到了液晶配向的目的,又能够防止TFT基板和CF基板中的杂质离子扩散到液晶层中,大大提高了面板的品质,且制作成本低;通过在聚合物薄膜中引入量子点材料,可提高光源利用率,获得更高纯度的色光、实现彩色显示的高色域和低功耗。
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权利要求的保护范围。
Claims (10)
1.一种配体修饰量子点材料,其特征在于,包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构通式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是 其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
2.如权利要求1所述的配体修饰量子点材料,其特征在于,所述配体修饰剂包括以下化合物中的一种或多种:
3.一种液晶显示面板的制作方法,其特征在于,包括以下步骤:
步骤1、提供一上基板(1)、一下基板(2)、及液晶材料;
所述上基板(1)包括第一基板(11)、及设于第一基板(11)上的第一电极(12);所述下基板(2)包括第二基板(21)、及设于第二基板(21)上的第二电极(22);
所述液晶材料包括包括液晶分子(31)、配体修饰量子点材料(32)、及可聚合单体(33);
所述配体修饰量子点材料(32)包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是 其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
步骤2、在所述上基板(1)或者下基板(2)上滴注液晶材料,在所述下基板(2)或者上基板(1)的周边位置涂布密封胶(4),之后将所述上基板(1)与下基板(2)组立贴合,并对所述密封胶(4)进行固化;
所述液晶材料中的配体修饰量子点材料(32)由于难溶于液晶分子(31)中从而沉积于所述上基板(1)和下基板(2)上,并通过其上的配体修饰剂的基团B-R引导液晶分子(31)垂直于所述上基板(1)和下基板(2)排列;
步骤3、通过第一电极(11)和第二电极(21)对液晶材料两侧施加电压,使液晶分子(31)发生偏转,沿倾斜于所述上基板(1)和下基板(2)的方向排列;
步骤4、在对液晶材料施加电压的情况下,从所述上基板(1)或下基板(2)一侧对液晶材料进行紫外光照射,使所述液晶材料中的配体修饰量子点材料(32)通过其上的配体修饰剂与可聚合单体(33)发生聚合反应,生成聚合物,所述聚合物沉积在所述上基板(1)上朝向液晶材料的一侧形成第一聚合物薄膜(41),同时沉积在所述下基板(2)上朝向液晶材料的一侧形成第二聚合物薄膜(42),所述第一聚合物薄膜(41)与第二聚合物薄膜(42)的表面均具有多个聚合物凸起,从而在撤去电压后以空间障碍的方式使第一聚合物薄膜(41)和第二聚合物薄膜(42)附近的液晶分子(31)维持其倾斜方向;
去除配体修饰量子点材料(32)与可聚合单体(33)的液晶材料构成液晶层(3)。
4.如权利要求3所述的液晶显示面板的制作方法,其特征在于,所述配体修饰剂包括以下化合物中的一种或多种:
5.如权利要求3所述的液晶显示面板的制作方法,其特征在于,所述液晶材料中,所述液晶分子(31)的质量百分比为93.0%~99.4%,所述配体修饰量子点材料(32)的质量百分比为0.5%~5.0%,所述可聚合单体(33)的质量百分比为0.01%~2.0%。
6.如权利要求3所述的液晶显示面板的制作方法,其特征在于,所述步骤3中,对液晶材料两侧施加的电压大小为13~25V;所述步骤4的紫外光照射中,所述紫外光的照度为85~100mW/cm2,照射时间为20~30min。
7.如权利要求3所述的液晶显示面板的制作方法,其特征在于,所述第一聚合物薄膜(41)与第二聚合物薄膜(42)的厚度为
8.一种液晶显示面板,其特征在于,包括相对设置的上基板(1)、下基板(2)、设于上、下基板(1、2)之间的液晶层(3)、设于所述上基板(1)朝向液晶层(3)一侧表面的第一聚合物薄膜(41)、及设于所述下基板(2)朝向液晶层(3)一侧表面的第二聚合物薄膜(42);所述上基板(1)包括第一基板(11)、及设于第一基板(11)上的第一电极(12);所述下基板(2)包括第二基板(21)、及设于第二基板(21)上的第二电极(22);
所述液晶层(3)包括液晶分子(31);
所述第一聚合物薄膜(41)与第二聚合物薄膜(42)均由可聚合单体(33)与配体修饰量子点材料(32)聚合而成,且所述第一聚合物薄膜(41)与第二聚合物薄膜(42)的表面均具有多个聚合物凸起,从而使所述液晶层(3)中靠近所述第一聚合物薄膜(41)和第二聚合物薄膜(42)的液晶分子(31)沿倾斜于所述上基板(1)和下基板(2)的方向排列;
所述配体修饰量子点材料(32)包括量子点、及吸附于量子点表面的配体修饰剂;所述配体修饰剂的结构式为A-B-R,所述配体修饰剂以基团A吸附于量子点表面;
其中,A指的是-SH、-NH2、-NH-、或-COOH;
B指的是
Sp指的是-(CH2)n-基团、或者所述-(CH2)n-基团中某个-CH2-被-O-、-S-、-CO-、-CO-O-、-O-CO-、-O-CO-O-、-OCH2-、-CH2O-、-CH=CH-、-CF=CF-、-C≡C-、-CH=CH-COO-、或-OCO-CH=CH-取代后得到的基团,其中,n为1~8之间的整数;
B'指的是 其中,为苯基、苯基上的H原子被F、Cl、Br、I、-CN、-NO2、或-C(=O)H取代后得到的基团、或者环烷基;
R指的是具有5~20个C原子的直链或支链化的烷基、该烷基中某个-CH2-基团被苯基、环烷基、-CONH-、-COO-、-O-CO-、-S-、-CO-、或-CH=CH-基团取代后得到的第一基团、该烷基中某个H原子被F或Cl原子取代后得到的第二基团、或者所述第一基团中某个H原子被F或Cl原子取代后得到的第三基团;
L指的是连接于B'基团上的可聚合基团,包括以下三种基团中的任意一种、任意两种、或者三种:
9.如权利要求8所述的液晶显示面板,其特征在于,所述配体修饰剂包括以下化合物中的一种或多种:
10.如权利要求8所述的液晶显示面板,其特征在于,所述第一聚合物薄膜(41)与第二聚合物薄膜(42)的厚度为
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