CN103881629A - 封框胶、显示面板及显示装置 - Google Patents

封框胶、显示面板及显示装置 Download PDF

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CN103881629A
CN103881629A CN201410103599.1A CN201410103599A CN103881629A CN 103881629 A CN103881629 A CN 103881629A CN 201410103599 A CN201410103599 A CN 201410103599A CN 103881629 A CN103881629 A CN 103881629A
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CN103881629B (zh
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王宇鹏
占红明
张洪林
田超
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Beijing BOE Display Technology Co Ltd
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Abstract

本发明公开了一种封框胶、显示面板及显示装置,所述封框胶包括:亚克力树脂、环氧树脂、热固化剂、紫外光引发剂;所述封框胶还包括在光照、或加热、或外界高温条件下分解产生气体的化合物。本发明通过设置在光照、或加热、或外界高温条件下分解产生气体的化合物,在封框胶固化时化合物见光、或加热、或受外界高温条件作用分解,生成气体,通过气体阻挡显示屏背光位置的漏光,并且该气体气压可以减缓液晶分子扩散,从而避免由于液晶与封框胶过早接触所导致的液晶污染,以及相关的显示不良。

Description

封框胶、显示面板及显示装置
技术领域
本发明涉及显示技术领域,特别是涉及一种封框胶、显示面板及显示装置。
背景技术
目前,随着窄边框显示器的研发,液晶与封框胶的距离越来越小,不可避免的与封框胶接触形成污染。并且,在显示器实际的使用及实验测试过程中,发现显示屏由于偏光板收缩产生翘曲,会出现与接触的背光接触发生干涉产生漏光的现象。上述液晶污染以及显示屏漏光的现象,都会严重影响显示器的质量。
发明内容
(一)要解决的技术问题
本发明要解决的技术问题是缓解现有技术中出现的显示屏漏光的现象以及液晶与封框胶接触带来的污染。
(二)技术方案
为了解决上述技术问题,本发明提供一种封框胶,包括:亚克力树脂、环氧树脂、热固化剂、紫外光引发剂;其中,所述封框胶还包括在光照、或加热、或外界高温条件下分解产生气体的化合物。
优选地,所述化合物包括金属卤化物。
优选地,所述化合物还包括碳酸铵、高锰酸钾、氯酸钾、苯乙烯中的至少一种。
优选地,当所述化合物包括苯乙烯时,所述封框胶还包括有催化剂。
优选地,所述催化剂为CuO。
优选地,所述金属卤化物为卤化银,其中,卤素为Cl、Br、I。
本发明还提供了一种显示面板,其包括第一基板、第二基板和固化在所述第一基板和第二基板之间的如上述任一项所述的封框胶。
优选地,所述显示面板为液晶显示面板,所述液晶显示面板还包括设置在所述第一基板和第二基板之间的液晶层,所述封框胶固化后形成支撑结构,所述支撑结构设置在液晶显示面板的四周。
优选地,所述支撑结构外围还形成有外层封框胶,所述外层封框胶设置在第一基板和第二基板之间,所述外层封框胶由亚克力树脂、环氧树脂、热固化剂和紫外光引发剂组成。
本发明进一步提供了一种显示装置,其包括上述任一项所述的显示面板。
(三)有益效果
上述技术方案具有如下优点:通过设置在光照、或加热、或外界高温条件下分解产生气体的化合物,在封框胶固化时化合物见光、或加热、或受外界高温条件作用分解,生成气体,通过气体阻挡显示屏背光位置的漏光,并且该气体气压可以减缓液晶分子扩散,从而避免由于液晶与封框胶过早接触所导致的液晶污染,以及相关的显示不良。
附图说明
图1是本发明实施例显示面板的结构示意图;
图2是图1中显示面板上封框胶受光照射时的状态图。
其中,1:第一基板;2:第二基板;3:液晶层;4:外层封框胶;5:内层封框胶;6:紫外光。
具体实施方式
下面结合附图和实施例,对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明,但不用来限制本发明的范围。
为了解决现有技术中因偏光板收缩产生翘曲而出现的与背光接触发生干涉产生漏光的现象,以及液晶与封框胶接触受污染的问题,本发明提出了一种改进的封框胶,基于原有常规的封框胶,在封框胶里面添加了能够在光照、或加热、或外界高温等条件下能够分解产生气体的化合物,以利用产生的气体遮挡漏光,避免漏光对显示装置显示品质的不良影响,并利用气体的气压阻挡液晶分子过快靠近封框胶,减弱液晶分子的污染。
实施例1
本实施例提供一种改进的封框胶,该封框胶基于现有常用的封框胶做了改进,现有常用的封框胶一般包括亚克力树脂、环氧树脂、热固化剂和紫外光引发剂;改进后的封框胶在现有的成分的基础上,添加了在光照、或加热、或外界高温等条件下能够分解产生气体的化合物。通过添加的化合物,能够实现在封框胶固化过程中,受到外界相应条件的作用,实现化合物的分解,生成气体,气体能够阻挡显示屏背光位置的漏光,并且该气体气压可以减缓液晶分子扩散,从而避免由于液晶与封框胶过早接触所导致的液晶污染,以及相关的显示不良。
上述化合物优选见光分解的金属卤化物,使得改进后的封框胶见光分解后能够生成卤素气体,如氯气、溴和碘等气体,分别呈现黄绿色、棕色和紫色,带有颜色的气体更能够阻挡显示屏背光位置的漏光。
上述金属卤化物优选采用卤化银,不仅见光分解,而且分解后生成的单质银稳定性强,不会对其应用环境带来不良影响。卤化银见光分解的方程式为:
2AgXAg+X2↑(X为Cl、Br、I)
进一步地,所述封框胶还可包括苯乙烯。苯乙烯能够发生可逆反应,生成氢气,氢气带来的气压能够使液晶盒内气压稳定,避免液晶污染。苯乙烯发生可逆反应的方程式为:
Figure BDA0000479228710000032
可逆反应会涉及到逆反应速度过慢,所以可在封框胶中进一步掺杂少量的CuO,作为催化剂,以提高逆反应速度,确保氢气气体的稳定生成。
以下化合物通过加热或遇高温分解也可以产生气体,如碳酸铵、高锰酸钾、或氯酸钾等,通过控制液晶面板周边气压,控制液晶扩散,达到降低污染风险的作用。碳酸铵、高锰酸钾和氯酸钾三种物质,在封框胶组分中可以包括至少一种,它们受热分解产生气体的方程式分别如下:
(NH4)2CO3
Figure BDA0000479228710000041
2NH3+H2O+CO2
2KClO3 2KCl+3O2
2KMnO4
Figure BDA0000479228710000043
K2MnO4+MnO2+O2
本实施例中,改进后封框胶应用在液晶盒内时,所添加的物质受光照或发生可逆反应产生的气体不会污染到液晶,能够确保显示面板的显示品质优良。
实施例2
基于实施例1中的改进的封框胶,本实施例提供一种显示面板,其结构示意图如图1所示,其包括第一基板1、第二基板2和固化在所述第一基板1和第二基板2之间的如实施例1中所述的封框胶。
其中,所述显示面板为液晶显示面板,所述液晶显示面板还包括设置在所述第一基板1和第二基板2之间的液晶层3,所述封框胶固化后形成支撑结构,所述支撑结构设置在液晶显示面板的四周。
如图2所示,封框胶涂覆在第一基板1和第二基板2之间之后,在封框胶固化过程中,会受到光照或高温的影响,进而就会由封框胶产生出气体,以阻挡显示屏背光位置的漏光,气体气压可以减缓液晶分子扩散,从而避免由于液晶与封框胶过早接触所导致的液晶污染,以及相关的显示不良。
例如,通过紫外光6照射来实现封框胶的固化时,紫外光的照射能够使封框胶中的金属卤化物发生反应生成卤素气体,如氯气、溴和碘等气体,分别呈现黄绿色、棕色和紫色,带颜色的气体能够避免显示面板中因偏光板收缩产生翘曲而出现的与背光接触发生干涉产生漏光的现象,并且所产生气体的气压能够减缓液晶分子的扩散,避免液晶分子过快靠近封框胶而带来污染,进而影响显示面板的显示品质。
进一步地,支撑在第一基板1和第二基板2之间的封框胶分两层设置,包括设置在第一基板1和第二基板2四周的外层封框胶4和内层封框胶5,外层封框胶4位于内层封框胶5的外围,内层封框胶5采用实施例1中所述的改进的封框胶,外层封框胶4采用现有常用的封框胶,即由亚克力树脂、环氧树脂、热固化剂和紫外光引发剂形成的封框胶,以避免内层封框胶4在固化过程中产生气体向两个方向同时扩散(如图2中内层封框胶4两侧的箭头所示),反应过程中会在内层封框胶4上产生大量的孔洞,影响显示器密封性,外层封框胶5能够起到气密性的作用,内层封框胶4主要起到液晶分子保护的作用。
本实施例形成的显示面板的漏光现象和液晶分子易被污染的问题都得到了显著改善。
实施例3
基于实施例2,本实施例提供了一种显示装置,该显示装置包括如实施例2所述的显示面板。其中,液晶面板的结构参照上述显示面板的实施例,在此不再赘述。另外,显示装置其他部分的结构可以参考现有技术,对此本文不再详细描述。该显示装置可以为:液晶面板、电子纸、液晶电视、液晶显示器、数码相框、手机、平板电脑等具有任何显示功能的产品或部件。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和替换,这些改进和替换也应视为本发明的保护范围。

Claims (10)

1.一种封框胶,包括:亚克力树脂、环氧树脂、热固化剂、紫外光引发剂;其特征在于,所述封框胶还包括在光照、或加热、或外界高温条件下分解产生气体的化合物。
2.如权利要求1所述的封框胶,其特征在于,所述化合物包括金属卤化物。
3.如权利要求1或2所述的封框胶,其特征在于,所述化合物还包括碳酸铵、高锰酸钾、氯酸钾、苯乙烯中的至少一种。
4.如权利要求3所述的封框胶,其特征在于,当所述化合物包括苯乙烯时,所述封框胶还包括有催化剂。
5.如权利要求4所述的封框胶,其特征在于,所述催化剂为CuO。
6.如权利要求2所述的封框胶,其特征在于,所述金属卤化物为卤化银,其中,卤素为Cl、Br、I。
7.一种显示面板,其特征在于,包括第一基板、第二基板和固化在所述第一基板和第二基板之间的如权利要求1-6中任一项所述的封框胶。
8.如权利要求7所述的显示面板,其特征在于,所述显示面板为液晶显示面板,所述液晶显示面板还包括设置在所述第一基板和第二基板之间的液晶层,所述封框胶固化后形成支撑结构,所述支撑结构设置在液晶显示面板的四周。
9.如权利要求8所述的显示面板,其特征在于,所述支撑结构外围还形成有外层封框胶,所述外层封框胶设置在第一基板和第二基板之间,所述外层封框胶由亚克力树脂、环氧树脂、热固化剂和紫外光引发剂组成。
10.一种显示装置,其特征在于,包括权利要求7-9中任一项所述的显示面板。
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