CN104460081A - 一种液晶显示器和用于其的双面胶带 - Google Patents
一种液晶显示器和用于其的双面胶带 Download PDFInfo
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Abstract
本发明涉及一种液晶显示器和用于其的双面胶带。液晶显示器包括:液晶面板;背光单元,其包括背板、光学膜片组和胶框;双面胶带,包括涂布了第一胶黏剂并通过第一胶黏剂与液晶面板相连的第一表面,以及涂布了第二胶黏剂并通过第二胶黏剂分别与背板和光学膜片组相连的第二表面。其中,第一胶黏剂对液晶面板的粘附强度低于第二胶黏剂对光学膜片组的粘附强度。在背光单元与液晶面板分离后,本发明的液晶显示器的双面胶带能留在光学膜片和胶框上,不会破坏光学膜片组内膜片间的位置关系,保证重新组装后的液晶显示器能够正常使用。
Description
技术领域
本发明涉及一种液晶显示器和用于其的双面胶带。
背景技术
在当今社会中,液晶显示器已成为手机、电脑等电子产品以及相关机械设备必不可缺的重要组成,其可通过显示内容向人们传递某种信息,以便人们及时获知该信息。
如图1所示,现有的液晶显示器100主要包括液晶面板20和双面胶带30,以及通过双面胶带30粘附在液晶面板20上的背光单元50。该背光单元50包括背板501、胶框503和光学膜片组502。双面胶带30的一个表面与液晶面板20相连接,而另一个表面与胶框503和光学膜片组502相连接。
当检修液晶显示器100时,需要在液晶显示器100的一侧对液晶面板20和背光单元50分别施加两个向外作用力F1和F2,以使液晶面板20与背光单元50能够逐渐分开。在液晶面板20与背光单元50分离后,双面胶带30极有可能留在液晶面板20上,使得双面胶带30与光学膜片组502彼此脱离。但是,脱离光学膜片组502的双面胶带30会破坏光学膜片组502内膜片间的位置关系,使得光学膜片组502受到损伤,造成重新组装后的液晶显示器无法正常使用。
发明内容
为了解决上述问题,本发明的目的是提供一种液晶显示器,其能够避免双面胶带在背光单元与光学膜片组分离后留在液晶面板上,由此不会破坏光学膜片内膜片间的位置关系,保证重新组装后的液晶显示器能够正常使用。
本发明提供了一种液晶显示器,其包括:液晶面板;背光单元,其包括背板和设在背板与液晶面板之间的光学膜片组,以及设在背板与液晶面板之间并围绕光学膜片组外的胶框;双面胶带,包括涂布了第一胶黏剂并通过第一胶黏剂与液晶面板相连的第一表面,以及涂布了第二胶黏剂并通过第二胶黏剂分别与背板和光学膜片组相连的第二表面。其中,第一胶黏剂对液晶面板的粘附强度低于第二胶黏剂对光学膜片组的粘附强度。
在一个实施例中,第一与第二胶黏剂内的粘结物质不同,第一胶黏剂内的粘结物质的黏度低于第二胶黏剂内的粘结物质的黏度,同时第一胶黏剂内的粘结物质的浓度低于或等于粘结物质的浓度。
在一个实施例中,第一与第二胶黏剂内的粘结物质相同,但第一胶黏剂内的粘结物质的浓度低于第二胶黏剂内的粘结物质的浓度。
在一个实施例中,光学膜片组包括从液晶面板朝背板的方向依次分布的扩散膜、增亮膜、扩散膜、导光板和反射膜。
在一个实施例中,液晶面板包括依次堆叠的偏光膜、彩膜基板、液晶层、阵列基板、偏光片、驱动电路和印刷电路板。
在一个实施例中,第一和第二胶黏剂均为亚克力胶。
本发明还提供了一种用于液晶显示器的双面胶带,其包括涂布了第一胶黏剂并通过第一胶黏剂与液晶显示器的液晶面板相连的第一表面,以及涂布了第二胶黏剂并通过第二胶黏剂分别与液晶显示器的背板和光学膜片组相连的第二表面。其中,第一胶黏剂对液晶面板的粘附强度低于第二胶黏剂对光学膜片组的粘附强度。
在一个实施例中,第一与第二胶黏剂内的粘结物质不同,第一胶黏剂内的粘结物质的黏度低于第二胶黏剂内的粘结物质的黏度,第一胶黏剂内的粘结物质的浓度低于或等于粘结物质的浓度。
在一个实施例中,第一与第二胶黏剂内的粘结物质相同,但第一胶黏剂内的粘结物质的浓度低于第二胶黏剂内的粘结物质的浓度。
在一个实施例中,第一和第二胶黏剂均为亚克力胶。
在背光单元与液晶面板分离后,本发明的液晶显示器的双面胶带不得不与液晶面板分离并留在光学膜片和胶框上,从而不会破坏光学膜片组内膜片间的位置关系,保证重新组装后的液晶显示器能够正常使用。
另外,根据本发明的液晶显示器的结构简单,加工方便,装配容易,使用安全,便于实施推广应用。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中:
图1是现有技术的液晶面板的结构示意图。
图2是根据本发明的液晶显示器的结构示意图。
在附图中,相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
图2显示了根据本发明的液晶显示器10。该液晶显示器10可应用在手机和电脑等电子产品以及相关的机械设备中,并通过显示内容向人们传递某种信息,以便人们及时获知该信息。
如图2所示,该液晶显示器10包括矩形的液晶面板2和框式的双面胶带3,以及通过双面胶带3与液晶面板2相连的背光单元5。背光单元5能够向液晶面板2提供光源,以确保液晶面板2能够清晰地显示画面。
该液晶面板2可选为TFT-LCD液晶面板(即薄膜晶体管液晶显示器的液晶面板),其包括从上至下方向(即A方向)依次布置的偏光膜21、彩膜基板22(另称对向电极基板)、液晶层、阵列基板23、偏光片24、驱动电路和印刷电路板。其中,所述的驱动电路、液晶层、彩膜基板22和阵列基板23和印刷电路板都属于本领域技术人员熟知的,在此不再赘述。
背光单元5可包括背板51和设在背板51与液晶面板2之间的光学膜片组52,以及设在背板51与液晶面板2之间并围绕在光学膜片组52组外的胶框53。光学膜片组52包括从液晶面板2朝背板51的方向(即A方向)依次分布的扩散膜521、增亮膜522、扩散膜523、导光板524和反射膜525。背光单元5还包括设置在导光片524与胶框53之间的灯源。其中,所述的灯源可选为能够调节亮度的LED灯,以便调整液晶显示器10的亮度。除此之外,该光学膜片组52也有其他形式的结构,例如添加或删减相应膜片后形成的结构。
根据本发明,双面胶带3由基材和胶黏剂组成。基材可由纸、布或塑料薄膜形成,而胶黏剂可为环保型的胶黏剂,例如亚克力胶(即含有丙烯酸类和甲基丙烯酸类的胶)。其中,基材具有第一表面3a和与其相反的第二表面3b。胶黏剂包括涂布在第一表面3a上的第一胶黏剂,以及涂布在第二表面3b上的第二胶黏剂。双面胶带3的第一表面3a通过第一胶黏剂与液晶面板2相连接,而第二表面3b通过第二胶黏剂分别与背板51和光学膜片组52的扩散膜521相连接。通过双面胶带3能够把液晶面板2和背光单元5牢固地固定在一起。
为了防止双面胶带3在液晶面板2与光学膜片组52分离后留在液晶面板2上,第一胶黏剂对液晶面板2的粘附强度需要低于第二胶黏剂对光学膜片组52的粘附强度。由于同样的第二胶黏剂对玻璃材质光学膜片组52的粘附强度要低于对橡胶材质胶框53的粘附强度,而且第一胶黏剂对液晶面板2的粘附强度需要低于第二胶黏剂对光学膜片组52的粘附强度,因此第一胶黏剂对液晶面板2的粘附强度既低于第二胶黏剂对光学膜片组52的粘附强度又低于第二胶黏剂对胶框53的粘附强度。其中,所述的粘附强度实际上是单位面积内的粘附力,粘附力等于粘附强度乘以粘附处的接触面积。
如图2所示,在液晶显示器10的一侧对液晶面板2和背光单元5分别施加两个向外的作用力F3和F4时,由于第一胶黏剂对液晶面板2的粘附强度既低于第二胶黏剂对光学膜片组52的粘附强度又低于第二胶黏剂对胶框53的粘附强度,使得双面胶带3不得不与液晶面板2分离并留在光学膜片组52和胶框53上,由此可以避免光学膜片组52的结构受到损伤,保证重新组装后的液晶显示器10能够正常应用。
为了实现第一胶黏剂对液晶面板2的粘附强度低于第二胶黏剂对光学膜片组52上的粘附强度,以下提供两种实施例方式。
在第一种实施方式中,第一与第二胶黏剂内的粘结物质不同,第一胶黏剂内的粘结物质的黏度低于第二胶黏剂内的粘结物质的黏度,同时第一胶黏剂内的粘结物质的浓度低于或等于粘结物质的浓度。通过这种方式能够有效地降低第一表面3a与液晶面板2之间的粘附强度,确保双面胶带3能够与液晶面板2顺利分离,从而留在胶框53和光学膜片组52上。其中,所述粘结物质也称黏料,它是胶黏剂中的基本组分,起黏结作用。
在第二种实施方式中,第一与第二胶黏剂内的粘结物质相同,但第一胶黏剂内的粘结物质的浓度低于第二胶黏剂内的粘结物质的浓度。通过这种方式能够有效地降低第一表面3a与液晶面板2之间的粘附强度,确保双面胶带3能够与液晶面板2顺利分离,从而留在胶框53和光学膜片组52上。
在一个优选的实施例中,背板51包括底部51a和固定连接在底部51a边缘处的侧部51b。侧部51b环绕在胶框53外,起定位胶框53的作用,并且能够保证胶框53不易变形。另外,双面胶带3的第二表面3b还可以与侧部51b的顶端相粘接,以增强背光单元5内的胶框53的稳定性。
在背光单元5与液晶面板2分离后,根据本发明的液晶显示器10的双面胶带3不得不与液晶面板2分离并留在光学膜片组52和胶框53上,从而不会破坏光学膜片组52内膜片间的位置关系,保证重新组装后的液晶显示器10能够正常使用。
虽然已经参考优选实施例对本发明进行了描述,但在不脱离本发明的范围的情况下,可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是,只要不存在结构冲突,各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例,而是包括落入权利要求的范围内的所有技术方案。
Claims (10)
1.一种液晶显示器,其特征在于,包括:
液晶面板;
背光单元,其包括背板和设在所述背板与液晶面板之间的光学膜片组,以及设在所述背板与液晶面板之间并围绕所述光学膜片组外的胶框;以及
双面胶带,其包括涂布了第一胶黏剂并通过所述第一胶黏剂与所述液晶面板相连接的第一表面,以及涂布了第二胶黏剂并通过所述第二胶黏剂分别与所述背板和光学膜片组相连的第二表面;
其中,所述第一胶黏剂对所述液晶面板的粘附强度低于所述第二胶黏剂对所述光学膜片组的粘附强度。
2.根据权利要求1所述的液晶显示器,其特征在于,所述第一与第二胶黏剂内的粘结物质不同,所述第一胶黏剂内的粘结物质的黏度低于所述第二胶黏剂内的粘结物质的黏度,同时所述第一胶黏剂内的粘结物质的浓度低于或等于所述粘结物质的浓度。
3.根据权利要求2所述的液晶显示器,其特征在于,所述第一与第二胶黏剂内的粘结物质相同,但所述第一胶黏剂内的粘结物质的浓度低于所述第二胶黏剂内的粘结物质的浓度。
4.根据权利要求1到3中任一项所述的液晶显示器,其特征在于,所述光学膜片组包括从所述液晶面板朝所述背板的方向依次分布的扩散膜、增亮膜、扩散膜、导光板和反射膜。
5.根据权利要求1到3中任一项所述的液晶显示器,其特征在于,所述液晶面板包括依次堆叠的偏光膜、彩膜基板、液晶层、阵列基板、偏光片、驱动电路和印刷电路板。
6.根据权利要求1到3中任一项所述的液晶显示器,其特征在于,所述第一和第二胶黏剂均为亚克力胶。
7.一种用于液晶显示器的双面胶带,其特征在于,包括涂布了第一胶黏剂并通过所述第一胶黏剂与所述液晶显示器的液晶面板相连接的第一表面,以及涂布了第二胶黏剂并通过所述第二胶黏剂分别与所述液晶显示器的背板和光学膜片组相连的第二表面,其中,所述第一胶黏剂对所述液晶面板的粘附强度低于所述第二胶黏剂对所述光学膜片组的粘附强度。
8.根据权利要求7所述的双面胶带,其特征在于,所述第一与第二胶黏剂内的粘结物质不同,所述第一胶黏剂内的粘结物质的黏度低于所述第二胶黏剂内的粘结物质的黏度,同时所述第一胶黏剂内的粘结物质的浓度低于或等于所述粘结物质的浓度。
9.根据权利要求8所述的双面胶带,其特征在于,所述第一与第二胶黏剂内的粘结物质相同,但所述第一胶黏剂内的粘结物质的浓度低于所述第二胶黏剂内的粘结物质的浓度。
10.根据权利要求7到9中任一项所述的双面胶带,其特征在于,所述第一和第二胶黏剂均为亚克力胶。
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