CN105137671A - 液晶盒、液晶盒的制备方法以及显示面板 - Google Patents
液晶盒、液晶盒的制备方法以及显示面板 Download PDFInfo
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Abstract
本发明提供一种液晶盒、液晶盒的制备方法以及显示面板,属于液晶显示面板技术领域。本发明液晶盒的制备方法,包括步骤:在第一基板上形成固定的至少部分用来形成所述液晶盒的边框的挡墙结构,并注入液晶;在第二基板上形成用来对所述液晶盒的边框进行密封的第一纯热固化胶;将所述第一基板和所述第二基板进行对盒操作,以使所述第一基板的挡墙结构相应对准所述第二基板的第一纯热固化胶;以及对所述第一纯热固化胶进行热固化操作以密封所述液晶盒的边框。本发明的制备方法消除了液晶显示面板中的框Mura现象,在边框附近显示效果好。
Description
技术领域
本发明属于液晶显示面板技术领域,涉及液晶盒,尤其涉及液晶盒的制备方法。
背景技术
液晶显示面板因其突出的优点已经称为显示面板中的主流,并且越来越广泛地应用于各种显示领域,包括应用在各种小尺寸的便携式电子产品中。
液晶盒是液晶显示面板的基本部件,其包括TFT(薄膜晶体管)基板、CF(彩色滤光片)基板以及形成在TFT基板与CF基板之间的液晶层。制备液晶盒的过程中,需要按显示尺寸对液晶层进行密封以形成相应尺寸的液晶盒。
图1所示为现有的液晶盒在密封固化过程中的示意图。现有的液晶盒生产工艺中,如图1所示,在TFT基板11与CF基板13对准后,其边框采用UV(紫外辐射)和热固化混合胶类型的封框胶13进行密封,具体密封固化过程为:先对封框胶13采用UV固化,使封框胶13部分固化,从而阻止液晶扩散到外围,然后对封框胶13进行热固化,使封框胶13充分固化。但是,在UV固化过程中,如图1所示,即使采用掩膜板15遮挡,UV不可避免地会辐射到封框胶13的边沿位置的PI(聚酰亚胺)取向层14,从而在液晶盒的边框周边区域141会产生离子(e-)。基于该液晶盒形成的显示面板中,在点屏时,液晶盒的边框周边区域141产生的离子会导致边框周边的电压与正常区域的电压不同,使液晶盒的边框附近的液晶偏转异常,因此,容易在显示面板的四周发生显示异常,形成“框Mura”现象(例如显示亮度不均匀、造成痕迹的现象)。
以上问题在小尺寸显示面板相对突出,尤其是在窄边框、小尺寸显示面板中。
发明内容
本发明的目的之一在于,避免在液晶盒的封框胶进行UV固化时对液晶盒的PI取向膜的产生的UV辐射影响,从而避免显示面板中的框Mura现象。
为实现以上目的或者其他目的,本发明提供以下技术方案。
按照本发明的一方面,提供一种液晶盒的制备方法,包括步骤:
在第一基板上形成固定的至少部分用来形成所述液晶盒的边框的挡墙结构,并注入液晶;
在第二基板上形成用来对所述液晶盒的边框进行密封的第一纯热固化胶;
将所述第一基板和所述第二基板进行对盒操作,以使所述第一基板的挡墙结构相应对准所述第二基板的第一纯热固化胶;以及
对所述第一纯热固化胶进行热固化操作以密封所述液晶盒的边框。
根据本发明一实施例的液晶盒的制备方法,其中,在第一基板上形成固定的挡墙结构的步骤中,包括子步骤:
在所述第一基板涂布第二纯热固化胶;
对所述第二纯热固化胶进行热固化操作以形成所述挡墙结构。
可选地,所述第一纯热固化胶/第二纯固化胶为环氧树脂、丙烯酸脂或热固化剂,或者为它们中任意两种或两种以上的混合物。
优选地,所述第一纯热固化胶与第二纯固化胶二者采用相同的材料。
根据本发明又一实施例的液晶盒的制备方法,其中,所述挡墙结构通过树脂材料或丙烯酸脂聚合物形成。
在上述任一实施例制备方法中,所述热固化操作中,在150℃-230℃条件下保持20-40分钟。
在上述任一实施例制备方法中,所述挡墙结构的高度为所述液晶盒的厚度的1/2至3/4。
在上述任一实施例制备方法中,所述第一基板为CF基板/TFT基板,所述第二基板为TFT基板/CF基板。
在上述任一实施例制备方法中,在所述对盒操作中,所述挡墙结构被所述第一纯热固化胶包覆。
按照本发明的又一方面,提供一种采用如上任一所述的方法制备形成的液晶盒。
按照本发明的还一方面,提供一种显示面板,其包括以上所述液晶盒。
本发明的技术效果是,在整个液晶盒的制备过程中,避免了UV固化方法,尤其在对盒操作后,只需要进行热固化,因此,液晶盒的封框操作中完全避免了UV固化时对液晶盒的PI取向膜的产生的UV辐射影响,不会在液晶盒的边框周边区域会产生离子,消除了液晶显示面板中的框Mura现象。本发明制备的液晶盒形成的显示面板具有在边框附近显示效果好的优点。
附图说明
从结合附图的以下详细说明中,将会使本发明的上述和其他目的及优点更加完整清楚,其中,相同或相似的要素采用相同的标号表示。
图1是现有的液晶盒在密封固化过程中的示意图。
图2是按照本发明一实施例的液晶盒的制备方法流程图。
图3是按照图2所示制备方法制备一实施例的液晶盒。
图4是按照本发明又一实施例的液晶盒的制备方法流程图。
图5是按照图4所示制备方法制备又一实施例的液晶盒。
具体实施方式
下面介绍的是本发明的多个可能实施例中的一些,旨在提供对本发明的基本了解,并不旨在确认本发明的关键或决定性的要素或限定所要保护的范围。容易理解,根据本发明的技术方案,在不变更本发明的实质精神下,本领域的一般技术人员可以提出可相互替换的其他实现方式。因此,以下具体实施方式以及附图仅是对本发明的技术方案的示例性说明,而不应当视为本发明的全部或者视为对本发明技术方案的限定或限制。
在附图中,为了清楚起见,夸大了某些层和区域的厚度,并且,附图中各部件之间的尺寸比例关系仅是示意性的,其并不反映各部件之间的实际尺寸比例关系。
图2是按照本发明一实施例的液晶盒的制备方法流程图;图3是按照图2所示制备方法制备一实施例的液晶盒。以下结合图2和图3对制备图3(e)所示实施例的液晶盒的方法进行示例说明。
首先,步骤S210,在第一基板和第二基板上涂覆PI膜(聚酰亚胺)并固化。具体参见图3(a)和图3(a'),其中图3(a)示意在第一基板31上涂覆或印刷PI膜34',图3(a')示意在第二基板32上涂覆PI膜34';PI膜34'是用来形成取向层,PI膜34'的具体厚度不是限制性的,具体涂覆方法也不是限制性的,例如可以通过构图印刷PI液完成。第一基板31具体可以为TFT基板,其上形成有TFT阵列,第二基板32可以为CF(彩色滤光)基板(或称为彩膜基板),在又一变换实施例中,第一基板31也可以为CF基板,第二基板32也可以为TFT基板。
进一步,步骤S220,对PI膜进行摩擦取向形成PI取向层。具体参见图3(b)和图3(b'),第一基板31和第二基板32上的PI膜34'被进行摩擦取向操作,变成PI取向层34。在其他实施例中,也可以采用光取向操作。
进一步,针对第一基板,进行步骤S231至步骤S233的操作。
其中,步骤S231,在第一基板上涂布纯热固化胶。参见图3(c1),在对应第一基板31上欲形成的液晶盒的边框的位置涂布形成纯热固化胶331',纯热固化胶331'在该实施例中是用来形成防止液晶扩散外漏的挡墙结构。纯热固化胶331'是仅通过热固化方式可以实现基本充分固化的封框胶材料,其具体可以但不限于为环氧树脂、丙烯酸脂或热固化剂,或者它们中任意两者或两者以上的混合物。
步骤S232,对纯热固化胶进行热固化操作来形成挡墙结构。参见图3(c2),纯热固化胶331'被热固化形成挡墙结构331,挡墙结构331的高度和/或宽度可以分别根据欲形成的液晶盒的边框的高度和/或宽度来确定。具体地,该热固化操作中,在150℃-230℃(例如200℃)条件下保持20-40分钟(例如30分钟)。挡墙结构331的高度为欲形成的液晶盒的厚度的1/2至3/4,例如,可以为液晶盒的厚度的3/5。
步骤S233,注入液晶。参见图3(c3),在挡墙结构331所围成的区域内注入液晶39,其用来形成液晶盒中的液晶层;液晶39可以被挡墙结构331阻挡而防止其扩散外漏。
同步地,针对第二基板,进行步骤S234,在第二基板上涂布纯热固化胶。参见图3(c'),在对应第二基板32上欲形成的液晶盒的边框的位置涂布形成纯热固化胶332',纯热固化胶332'是用来对液晶盒的边框进行密封,从而形成密封性能良好的边框。纯热固化胶332'是仅通过热固化方式可以实现基本充分固化的封框胶材料,其具体可以但不限于为环氧树脂、丙烯酸脂或热固化剂,或者它们中任意两者或两者以上的混合物。
进一步,步骤S240,将第一基板和第二基板进行对盒操作。参见图3(d),在进行对盒操作时,第一基板31的挡墙结构331与第二基板32的纯热固化胶332'相对准并且基本相粘合在一起。液晶39被置于第一基板31和第二基板32之间。
进一步,步骤S250,对以上在第二基板上的纯热固化胶进行热固化操作以密封液晶盒的边框。参见图3(e),将图3(d)的结构送入热固化设备进行热固化操作后,纯热固化胶332'被热固化并与挡墙结构331相融合在一起,从而形成了密封性能良好的边框33。在该实施例中,边框33基本全部为纯热固化胶进行热固化后形成的材料。
至此,图3(e)所示实施例的液晶盒基本制备完成。在以上操作过程中,在进行对盒操作后,只需要进行热固化,不存在UV固化步骤,因此,步骤S250的封框操作中完全避免了UV固化时对液晶盒的PI取向膜34的产生的UV辐射影响,不会在液晶盒的边框周边区域会产生离子,消除了液晶显示面板中的框Mura现象。
并且,在该实施例中,上下基板(第一基板和第二基板)都是采用纯热固化胶,也即挡墙结构331与纯热固化胶332'具有基本相同的材料特性,相容特性非常好,因此,二次固化后形成的边框33的密封性非常好。
需要指出的是,图3(e)所示实施例的液晶盒中,其边框33是由纯热固化材料固化形成,其相比图1所示的封框胶13的材料类型是不相同的。
图4所示为按照本发明又一实施例的液晶盒的制备方法流程图;图5所示为按照图4所示制备方法制备又一实施例的液晶盒。以下结合图4和图5对制备图5(e)所示实施例的液晶盒的方法进行示例说明。
首先,步骤S510,在第一基板和第二基板上涂覆PI膜(聚酰亚胺)并固化。具体参见图5(a)和图5(a'),其中图5(a)示意在第一基板31上涂覆或印刷PI膜34',图5(a')示意在第二基板32上涂覆PI膜34';PI膜34'是用来形成取向层,PI膜34'的具体厚度不是限制性的,具体涂覆方法也不是限制性的,例如可以通过构图印刷PI液完成。第一基板31具体可以为TFT基板,其上形成有TFT阵列,第二基板32可以为CF(彩色滤光)基板(或称为彩膜基板),在又一变换实施例中,第一基板31也可以为CF基板,第二基板32也可以为TFT基板。
进一步,步骤S520,对PI膜进行摩擦取向形成PI取向层。具体参见图5(b)和图5(b'),第一基板31和第二基板32上的PI膜34'被进行摩擦取向操作,变成PI取向层34。在其他实施例中,也可以采用光取向操作。
进一步,针对第一基板,进行步骤S531至步骤S532的操作。
其中,步骤S531,在第一基板上采用树脂材料等形成挡墙结构。参见图5(c1),在对应第一基板31上欲形成的液晶盒的边框的位置构图形成树脂材料的挡墙结构531,具体可以通过掩膜(Mask)工艺来形成该挡墙结构531,其具体工艺不是限制性的。相比于图2所示实施例,挡墙结构531并不是通过热固化形成,挡墙结构531的高度为欲形成的液晶盒的厚度的1/2至3/4,例如,可以为液晶盒的厚度的3/5。在其他变换实施例中,挡墙结构531也可以采用与用作封框胶的纯热固化胶的单体结构类似的其他高分子有机物,例如,丙烯酸脂聚合物。
步骤S533,注入液晶。参见图5(c2),在挡墙结构531所围成的区域内注入液晶39,其用来形成液晶盒中的液晶层;液晶39可以被挡墙结构531阻挡而防止其扩散外漏。
同步地,针对第二基板,进行步骤S534,在第二基板上涂布纯热固化胶。参见图5(c'),在对应第二基板32上欲形成的液晶盒的边框的位置涂布形成纯热固化胶332',纯热固化胶332'是用来对液晶盒的边框进行密封,从而形成密封性能良好的边框。纯热固化胶332'是仅通过热固化方式可以实现基本充分固化的封框胶材料,其具体可以但不限于为环氧树脂、丙烯酸脂或热固化剂,或者它们中任意两者或两者以上的混合物。
进一步,步骤S540,将第一基板和第二基板进行对盒操作。参见图5(d),在进行对盒操作时,第一基板31的挡墙结构531与第二基板32的纯热固化胶332'相对准并且基本相粘合在一起,纯热固化胶332'基本包覆树脂材料的挡墙结构531。液晶39被置于第一基板31和第二基板32之间。
进一步,步骤S550,对以上在第二基板上的纯热固化胶进行热固化操作以密封液晶盒的边框。参见图5(e),将图5(d)的结构送入热固化设备进行热固化操作后,纯热固化胶332'被热固化并与挡墙结构531整体地固化在一起,从而形成了边框53。在该实施例中,边框53包括纯热固化胶进行热固化后形成的材料和树脂材料的挡墙结构531。
至此,图5(e)所示实施例的液晶盒基本制备完成。在以上操作过程中,在进行对盒操作后,只需要进行热固化,不存在UV固化步骤,同样避免了因UV固化所导致的问题,因此,消除了液晶显示面板中的框Mura现象。并且,在该实施例中,树脂材料不需要通过UV固化,树脂材料与纯热固化胶的单体结构类似,纯热固化胶热332'固化后与挡墙结构531的相容性好,密封效果良好。
需要指出的是,图5(e)所示实施例的液晶盒中,其边框53是由纯热固化胶进行热固化后形成的材料和树脂材料的挡墙结构531形成,其相比图1所示的封框胶13的材料类型是不相同的。
以上例子主要说明了本发明液晶盒的制备方法及制备形成的液晶盒。尽管只对其中一些本发明的实施方式进行了描述,但是本领域普通技术人员应当了解,本发明可以在不偏离其主旨与范围内以许多其他的形式实施。因此,所展示的例子与实施方式被视为示意性的而非限制性的,在不脱离如所附各权利要求所定义的本发明精神及范围的情况下,本发明可能涵盖各种的修改与替换。
Claims (11)
1.一种液晶盒的制备方法,包括步骤:
在第一基板上形成固定的至少部分用来形成所述液晶盒的边框的挡墙结构,并注入液晶;
在第二基板上形成用来对所述液晶盒的边框进行密封的第一纯热固化胶;
将所述第一基板和所述第二基板进行对盒操作,以使所述第一基板的挡墙结构相应对准所述第二基板的第一纯热固化胶;以及
对所述第一纯热固化胶进行热固化操作以密封所述液晶盒的边框。
2.如权利要求1所述的制备方法,其特征在于,在第一基板上形成固定的挡墙结构的步骤中,包括子步骤:
在所述第一基板涂布第二纯热固化胶;
对所述第二纯热固化胶进行热固化操作以形成所述挡墙结构。
3.如权利要求2所述的制备方法,其特征在于,所述第一纯热固化胶/第二纯固化胶为环氧树脂、丙烯酸脂或热固化剂,或者为它们中任意两种或两种以上的混合物。
4.如权利要求3所述的制备方法,其特征在于,所述第一纯热固化胶与第二纯固化胶二者采用相同的材料。
5.如权利要求1所述的制备方法,其特征在于,所述挡墙结构通过树脂材料或丙烯酸脂聚合物形成。
6.如权利要求1所述的制备方法,其特征在于,所述热固化操作中,在150℃-230℃条件下保持20-40分钟。
7.如权利要求1所述的制备方法,其特征在于,所述挡墙结构的高度为所述液晶盒的厚度的1/2至3/4。
8.如权利要求1所述的制备方法,其特征在于,所述第一基板为CF基板/TFT基板,所述第二基板为TFT基板/CF基板。
9.如权利要求1所述的制备方法,其特征在于,在所述对盒操作中,所述挡墙结构被所述第一纯热固化胶包覆。
10.一种采用如权利要求1至9中任一项所述的方法制备形成的液晶盒。
11.一种显示面板,其特征在于,包括如权利要求9所述的液晶盒。
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WO2017063394A1 (zh) * | 2015-10-12 | 2017-04-20 | 京东方科技集团股份有限公司 | 液晶盒、液晶盒的制备方法以及显示面板 |
WO2020062435A1 (zh) * | 2018-09-28 | 2020-04-02 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶显示面板及其制备方法 |
WO2020186561A1 (zh) * | 2019-03-21 | 2020-09-24 | 深圳市华星光电技术有限公司 | 液晶显示面板的制作方法 |
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WO2017063394A1 (zh) | 2017-04-20 |
US20170269403A1 (en) | 2017-09-21 |
CN105137671B (zh) | 2018-09-07 |
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