CN109920331A - 显示面板及显示装置 - Google Patents
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Abstract
本发明提供一种显示面板及显示装置,该显示面板包括:柔性电路板、触摸层、盖板以及靠近盖板设置的辅助透明层;柔性电路板与触摸层连接,触摸层与柔性电路板交界的位置设置有第一密封胶,第一密封胶位于柔性电路板朝向盖板的一侧;辅助透明层朝向盖板的面与盖板之间的距离不大于第一密封胶朝向盖板的面与盖板之间的距离;在安装盖板时,盖板首先与辅助透明层接触,可以避免第一密封胶受力导致的第一密封胶与触摸层和柔性电路板之间产生裂纹。
Description
技术领域
本发明涉及显示设备技术领域,尤其涉及一种显示面板及显示装置。
背景技术
随着显示设备技术的逐渐发展,柔性显示面板已经逐渐应用在可穿戴设备上,如:智能手表、腕部手机等。
现有技术中,显示面板包括柔性电路板、依次层叠设置的盖板、偏光片、触摸层以及显示层;柔性电路板的的一端与控制设备连接,柔性电路板的另一端与触摸层连接,以实现显示装置的触摸控制。产生时,首先形成显示层、触摸层以及偏光片,之后将柔性电路板连接在触摸层上;为了避免外界空气与触摸层接触,常在触摸层与柔性电路板的交界位置贴附固体密封胶;之后再将盖板贴附在偏光片上。
然而,固体密封胶的体积较大,在贴附固体密封胶后,固体封胶的背离触摸层的顶面较偏光片背离触摸层的顶面更远离偏光片;安装盖板时,固体封胶首先与盖板接触,固体密封胶受力后与触摸层之间容易产生裂纹,导致触摸层的密封失效。
发明内容
有鉴于此,本发明提供一种显示面板及显示装置,以解决安装盖板时,固体封胶首先与盖板接触,固体密封胶受力后与触摸层之间容易产生裂纹,导致触摸层的密封失效的技术问题。
本发明实施例提供了一种显示面板,包括:柔性电路板、触摸层、盖板以及靠近所述盖板设置的辅助透明层;所述柔性电路板与所述触摸层连接,所述触摸层与所述柔性电路板交界的位置设置有第一密封胶,所述第一密封胶位于所述柔性电路板朝向所述盖板的一侧;所述辅助透明层朝向所述盖板的面与所述盖板之间的距离不大于所述第一密封胶朝向所述盖板的面与所述盖板之间的距离。
如上所述的显示面板,优选地,所述显示面板还包括第二密封胶,所述第二密封胶设置在所述柔性电路板背离所述盖板的一侧,且所述第二密封胶位于所述触摸层与所述柔性电路板的交界位置;优选地,所述第一密封胶和所述第二密封胶选自聚丙烯酸酯、环氧丙烯酸酯、线型不饱和聚酯的任一种或者多种。
如上所述的显示面板,优选地,所述显示面板还包括偏光片,所述偏光片设置在所述触摸层与所述辅助透明层之间。
如上所述的显示面板,优选地,所述辅助透明层包括光学胶层。
如上所述的显示面板,优选地,所述盖板包括层叠设置的硬质层和有机层,所述硬质层背离所述触摸层设置;优选地,所述硬质层为超薄玻璃层,所述有机层为聚酰亚胺层或者热塑性聚氨酯弹性体层。
如上所述的显示面板,优选地,所述显示面板还包括密封层、沿出光方向依次层叠设置的基板和显示层;所述密封层位于所述盖板与所述基板之间,且所述密封层环绕所述显示层外缘设置;优选地,所述密封层形成在所述基板上,并从所述基板向上延伸至与所述盖板接触;
优选地,所述密封层包括沿出光方向层叠设置的多个密封子层。
如上所述的显示面板,优选地,所述密封层与所述显示层之间具有间隙,所述间隙内填充有流动阻隔介质。
如上所述的显示面板,优选地,所述显示层包括形成在所述基板上的阵列基板,形成在所述阵列基板上的像素限定层,封装所述像素限定层的封装层,所述封装层通过连接胶与所述触摸层连接;所述流动阻隔介质处于所述辅助透明层和所述密封层之间的间隙内。
如上所述的显示面板,优选地,所述流动阻隔介质包括绝缘油,所述密封层包括闭孔泡棉层。
本发明实施例还提供一种显示装置,包括如上所述的显示面板。
本发明提供的显示面板及显示装置,通过在触摸层和盖板之间设置辅助透明层,并且辅助透明层靠近盖板设置,辅助透明层朝向盖板的面与盖板之间的距离不大于第一密封胶朝向盖板的面与盖板之间的距离;在安装盖板时,盖板首先与辅助透明层接触,可以避免第一密封胶受力导致的第一密封胶与触摸层和柔性电路板之间产生裂纹。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的显示面板中柔性电路板与触摸层之间的连接示意图;
图2为本发明实施例提供的显示面板中密封层与流动阻隔介质的位置示意图。
附图标记说明:
10、柔性电路板;
101、第一密封胶;
102、第二密封胶;
20、盖板;
30、触摸层;
301、连接胶;
40、光学胶层;
50、偏光片;
60、基板;
601、密封层;
602、流动阻隔介质;
70、显示层;
80、封装层。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明中,除非另有明确的规定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸的连接,或一体成型,可以是机械连接,也可以是电连接或者彼此可通讯;可以是直接相连,也可以通过中间媒体间接连接,可以是两个元件内部的连通或者两个元件的互相作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
图1为本发明实施例提供的显示面板中柔性电路板与触摸层之间的连接示意图。
请参照图1,本实施例提供一种显示面板,包括:柔性电路板10、触摸层30、盖板20以及靠近盖板20设置的辅助透明层;柔性电路板10与触摸层30连接,触摸层30与柔性电路板10交界的位置设置有第一密封胶101,第一密封胶101位于柔性电路板10朝向盖板20的一侧;辅助透明层朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离。
本实施例中,触摸层30内具有多个触控单元,柔性电路板10上的电路与触控单元电连接,并且柔性电路板10与外界的主板连接,以实现触摸控制。参照图1所示方位,触摸层30靠近右端的上表面上设置有安装台阶,柔性电路板10的输入端贴附在安装台阶上。相应的,触摸层30与柔性电路板10的之间的交界位置为触摸层30顶面与输入端顶面的交界线、交界线左侧的部分触摸层30顶面以及铰接线右侧的部分柔性电路板10顶面,除此之外,柔性电路板10与触摸层30之间的交界位置还包括柔性电路板10下表面与触摸层30右端的交界线以及交界线附近的区域;第一密封胶101设置在柔性电路板10和触摸层30朝向盖板20的面上,即第一密封胶101覆盖触摸层30顶面和输入端顶面的交界线以及交界线左侧的部分触摸层30顶面和交界线右侧的部分柔性电路板10顶面,以实现对柔性电路板10和触摸层30的交界线的密封,另外第一密封胶101还提高了柔性电路板10和触摸层30之间的连接力,以免在弯折显示面板时,触摸层30与柔性电路板10分离。
进一步地,第一密封胶101还覆盖位于辅助透明层外部的部分触摸层30,可以避免外界的空气与触摸层30接触。
本实施例中,盖板20位于显示面板沿出光方向的最外侧,以实现对各膜层的保护;以图1所示方位为例,盖板20位于显示面板的最上端。
本实施例优选地,盖板20包括层叠设置的硬质层和有机层,硬质层背离触摸层30设置。由硬质层和有机层构成的复合盖板,在保证透光率的同时提高了盖板20的表面硬度和铅笔硬度。
具体地,本实施例中的硬质层为超薄玻璃层,有机层为聚酰亚胺层或者热塑性聚氨酯弹性体层。超薄玻璃为厚度小于0.1mm的玻璃板,具有较好的柔韧性,以免在弯折显示面板时发生断裂。
本实施例中,辅助透明层设置在盖板20和触摸层30之间,且辅助透明层靠近盖板20设置;辅助透明层朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离,参照图1所示方位,第一密封胶101的顶面与辅助透明层的顶面平齐,或者辅助透明层的顶面较第一密封胶101的顶面更靠近盖板20,以避免在安装盖板20时,第一密封胶101首先与盖板20接触,导致第一密封胶101受力后与触摸层30或柔性电路板10之间产生裂纹,进而避免密封失效。
优选地,辅助透明层包括光学胶层40。由光学胶构成的辅助透明层可以将盖板20和触摸层30粘结起来,以提高盖板20与触摸层30之间的连接力。其中,光学胶层40可以主要由有机硅胶、聚氨酯、环氧树脂等胶粘剂构成。
本实施例提供的显示面板的制作过程为:形成触摸层30,之后在触摸层30上贴附柔性电路板10,在触摸层30和柔性电路板10之间的交界位置形成第一密封胶101,以封闭触摸层30与柔性电路板10之间的交界线,同时可以覆盖交界位置的触摸层30,以免外界空气与交界位置的触摸层30接触;之后在触摸层30上形成辅助透明层,辅助透明层的朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离;之后在辅助透明层上覆盖盖板20,以完成显示面板的制作。
本实施例提供的显示面板,通过在触摸层30和盖板20之间设置辅助透明层,并且辅助透明层靠近盖板20设置,辅助透明层朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离;在安装盖板20时,盖板20首先与辅助透明层接触,可以避免第一密封胶101受力导致的第一密封胶101与触摸层30和柔性电路板10之间产生裂纹。
本实施例提供的显示面板,还包括第二密封胶102,第二密封胶102设置在柔性电路板10背离盖板20的一侧,且第二密封胶102位于触摸层30与柔性电路板10的交界位置。第二密封胶102可以封闭柔性电路板10背离盖板20的面与触摸层30之间的交界线,以进一步提高柔性电路板10与触摸层30之间的密封性,与此同时,第二密封胶102还可以覆部分盖触摸层30,以进一步避免外界的空气与触摸层30接触;另外,第二密封胶102可以抵顶柔性电路板10,以免在弯折柔性电路板10时柔性电路板10晃动,进而避免在弯折柔性电路板10时第一密封胶101与触摸层30或柔性电路板10之间产生裂纹。
本实施例中,第一密封胶101与第二密封胶102的材质可以相同,当然第一密封胶101与第二密封胶102的材质也可以不同,只要保证第一密封胶101与第二密封胶102具有较好的抗水氧性即可。优选地,第一密封胶101与第二密封胶102的弹性模量大于光学胶层40的弹性模量,以在弯折柔性电路板10时,第一密封胶101与第二密封胶102产生的形变较小,减小柔性电路板10输入端的晃动,以免第一密封胶101与触摸层30或柔性电路板10之间产生裂纹。优选地,第一密封胶101和第二密封胶102可以选自聚丙烯酸酯、环氧丙烯酸酯、线性不饱和聚酯的任一种或多种;形成第一密封胶101和第二密封胶102后可以通过加热固化或者UV固化等方式,使第一密封胶101和第二密封胶102固化,以提高第一密封胶101和第二密封胶102的弹性模量。
示例性的,以UV固化的方式固化的第一密封胶101和第二密封胶102需要满足以下条件:第一密封胶101的粘度小于等于2000cps,第二密封胶102的粘度在1000-6000cps之间;固化波长均为365nm;固化能量均小于等于2000mj/cm2;固化深度均小于等于1mm;出胶温度均小于等于50℃;第二密封胶102的邵氏硬度小于等于D50;收缩率均小于2.5%。本实施例提供显示面板,还包括偏光片50,偏光片50设置在触摸层30与辅助透明层之间。偏光片50可以对光线进行处理,以提高显示面板的显示效果。
具体地,在偏光片50与触摸层30之间设置光学胶,以实现偏光片50与触摸层30之间的连接。
本实施例提供的显示面板的制作过程为:形成触摸层30,之后在触摸层30上贴附柔性电路板10,在触摸层30和柔性电路板10之间的交界位置形成第一密封胶101,以封闭触摸层30与柔性电路板10之间的交界线,与此同时第一密封胶101可以覆盖交界位置的触摸层30,以免外界空气与交界位置的触摸层30接触;之后在触摸层30上覆盖偏光片50,偏光片50可以通过光学胶与触摸层30连接;在偏光片50背离触摸层30的面上形成辅助透明层,辅助透明层的朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离;之后在辅助透明层上覆盖盖板20,以完成显示面板的制作。
优选地,在上述制作过程中,可以预先将辅助透明层贴附在偏光片50朝向盖板20的面上,形成透明组件;在形成第一密封胶101后,将透明组件贴附在触摸层30上,再将盖板20覆盖在辅助透明组件上;可以缩短显示面板的制作时间,便于加工。
在一个可实现的方式中,偏光片50还可以设置在触摸层30背离盖板20的一侧,此时偏光片50与触摸层30之间也可以通过光学胶连接,触摸层30通过辅助透明层与盖板20连接。
图2为本发明实施例提供的显示面板中密封层与流动阻隔介质的位置示意图。
请参照图1和图2。本实施例提供的显示面板,所述显示面板还包括密封层601、沿出光方向依次层叠设置的基板60和显示层70;密封层601位于盖板20与基板60之间,且密封层601环绕显示层70外缘设置。密封层601环绕显示层70设置,可以阻止外界空气与显示层70内的各膜层接触,进而提高显示面板的密封性。
优选地,密封层601形成在基板60上,并从基板60向上延伸至与盖板20接触。此时密封层601环绕盖板20和基板60之间的所有膜层,以进一步提高显示面板的密封性。
本实施例中,密封层601与显示层70之间具有间隙,间隙内填充有流动阻隔介质602。流动阻隔介质602可以进一步阻止外界的空气与显示层70的各膜层接触,进一步提高显示面板的密封性。另外,流动阻隔介质602具有一定的流动性,流动阻隔介质602能够随着基板60、盖板20以及显示层70的移动及形变进行相应形状的调整。其中,间隙环绕在显示层70的外侧。
具体地,流动阻隔介质602为可以为流态、半流态或者凝胶等可形变的非固态形式,其具有一定的流动性,因而当弯折显示面板时,填充在密封层显示层70之间的流动阻隔介质602会随基板60及盖板20的弯曲而随着产生相应的形变,从而始终与密封层和显示层70之间的间隙形状保持一致。这样流动阻隔介质602即可始终对显示层70边缘外侧的区域进行密封,避免显示层70接触到外部的空气。
优选地,流动阻隔介质602包括绝缘油。绝缘油不导电,可以避免显示层70向外漏电。当然本实施例中的流动阻隔介质602还可以包括润滑油等。
优选地,密封层601包括闭孔泡棉层。闭孔泡棉的闭孔率为100%,并且闭孔泡棉的弹性较好,弯曲后不易发生断裂。具体地,密封层601与各膜层之间的间隙内填充有流动阻隔介质602时,闭孔泡棉可以阻止流动阻隔介质602渗入密封层601内,以免间隙内的流动阻隔介质602体积减小;另外也可以阻止外界的空气进入到密封层601内。
本实施例中,密封层601还可由硅胶件或热塑性聚氨酯弹性体橡胶(Thermoplastic polyurethanes,TPU)件构成,以使该密封层601的防潮、耐水、耐辐射及耐气候老化性能得以提高,进而提高了该显示面板的整体性能。
本实施例中,显示层70用于显示图像,具体的,显示层70可以包括形成在基板60上的阵列基板,形成在阵列基板上的像素限定层,封装像素限定层的封装层,封装层通过连接胶与触摸层连接;流动阻隔介质602处于辅助透明层和密封层之间的间隙内。阵列基板内具有薄膜晶体管,通过薄膜晶体管可以控制像素限定层内的发光单元发光。基板60用于承载阵列基板,制作时可先形成基板60,之后在基板60上依次形成阵列基板、像素限定层、触摸层30等膜层。
继续参照图2,具体地,在显示层70外侧设置有封装堤坝,封装层80向显示面板的外侧延伸,且覆盖在封装堤坝上,以对显示层70进行封装。触摸层30设置在封装层80朝向盖板20的一侧,并且触摸层30通过连接胶301与封装层80连接,连接胶301可以为光学胶;偏光片50设置在触摸层30与盖板20之间,偏光片50也可以通过光学胶与触摸层30连接;辅助透明层可以为光学胶层40,光学胶层40设置在盖板20与偏光片50之间,以实现盖板20与偏光片50之间的连接。具体地,光学胶层40的边缘向基板60延伸,形成密封侧边,密封侧边可以包裹基板60与光学胶层40之间的膜层,以进一步提高显示面板的密封性,流动阻隔介质602填充在密封侧边与密封层601之间的间隙内。
本实施例中,密封层601包括沿出光方向层叠设置的多个密封子层。密封层601包括多个密封子层,在弯折显示面板时,相邻密封子层之间可以发生相对滑动,以免在弯折显示面板时,各膜层发生应力集中而损坏。另外,相邻密封子层之间可以发生相对滑动,避免了密封层601整体在盖板20和基板60之间滑动,提高了密封层601的稳固性。
具体地,密封层601与盖板20和基板60之间均可以通过粘结胶连接,粘结胶可以为光学胶。相邻密封子层之间可以通过压合的方式连接,以保证相邻密封子层之间的密封性。
示例性的,密封子层的数量可以两个,靠近基板60的密封子层与显示层70同层设置,靠近盖板20的密封子层与偏光片50和/或触摸层30同层设置,以在弯折显示面板时,靠近基板60的密封子层与显示层70同步移动,靠近盖板20的密封子层与其对应的膜层同步移动。当然,密封子层的数量还可以为三个,相应的,靠近基板60的密封子层与显示层70同层设置,另外两个密封子层中的一个与触摸层30同层设置,另一个与偏光片50同层设置,在弯折显示面板时,三个密封子层分别与其对应的膜层同步移动。本实施例中密封子层还可以为四个、五个等。
继续参照图1和图2。在其他实施例中,还提供一种显示装置,包括如上所述的显示面板。
其中显示装置可以为手机、平板电脑、电视机、显示器、电子书、电子纸、智能手表、笔记本电脑、数码相框或导航仪等具有显示功能的产品或部件。
本实施例提供的显示装置,通过在触摸层30和盖板20之间设置辅助透明层,并且辅助透明层靠近盖板20设置,辅助透明层朝向盖板20的面与盖板20之间的距离不大于第一密封胶101朝向盖板20的面与盖板20之间的距离;在安装盖板20时,盖板20首先与辅助透明层接触,可以避免第一密封胶101受力导致的第一密封胶101与触摸层30和柔性电路板10之间产生裂纹。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (10)
1.一种显示面板,其特征在于,包括:柔性电路板、触摸层、盖板以及靠近所述盖板设置的辅助透明层;所述柔性电路板与所述触摸层连接,所述触摸层与所述柔性电路板交界的位置设置有第一密封胶,所述第一密封胶位于所述柔性电路板朝向所述盖板的一侧;所述辅助透明层朝向所述盖板的面与所述盖板之间的距离不大于所述第一密封胶朝向所述盖板的面与所述盖板之间的距离。
2.根据权利要求1所述的显示面板,其特征在于,所述显示面板还包括第二密封胶,所述第二密封胶设置在所述柔性电路板背离所述盖板的一侧,且所述第二密封胶位于所述触摸层与所述柔性电路板的交界位置;
优选地,所述第一密封胶和所述第二密封胶选自聚丙烯酸酯、环氧丙烯酸酯、线型不饱和聚酯的任一种或者多种。
3.根据权利要求1所述的显示面板,其特征在于,所述显示面板还包括偏光片,所述偏光片设置在所述触摸层与所述辅助透明层之间。
4.根据权利要求1所述的显示面板,其特征在于,所述辅助透明层包括光学胶层。
5.根据权利要求1-4任一项所述的显示面板,其特征在于,所述盖板包括层叠设置的硬质层和有机层,所述硬质层背离所述触摸层设置;
优选地,所述硬质层为超薄玻璃层,所述有机层为聚酰亚胺层或者热塑性聚氨酯弹性体层。
6.根据权利要求1-4任一项所述的显示面板,其特征在于,所述显示面板还包括密封层、沿出光方向依次层叠设置的基板和显示层;所述密封层位于所述盖板与所述基板之间,且所述密封层环绕所述显示层外缘设置;
优选地,所述密封层形成在所述基板上,并从所述基板向上延伸至与所述盖板接触;
优选地,所述密封层包括沿出光方向层叠设置的多个密封子层。
7.根据权利要求6所述的显示面板,其特征在于,所述密封层与所述显示层之间具有间隙,所述间隙内填充有流动阻隔介质。
8.根据权利要求7所述的显示面板,其特征在于,所述显示层包括形成在所述基板上的阵列基板,形成在所述阵列基板上的像素限定层,封装所述像素限定层的封装层,所述封装层通过连接胶与所述触摸层连接;
所述流动阻隔介质处于所述辅助透明层和所述密封层之间的间隙内。
9.根据权利要求8所述的显示面板,其特征在于,所述流动阻隔介质包括绝缘油,所述密封层包括闭孔泡棉层。
10.一种显示装置,其特征在于,包括权利要求1-9任一项所述的显示面板。
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JP2021523598A JP7225390B2 (ja) | 2019-02-23 | 2019-08-14 | 表示パネルとその製造方法及び表示装置 |
EP19916414.6A EP3859720A4 (en) | 2019-02-23 | 2019-08-14 | DISPLAY PANEL AND METHOD OF MANUFACTURING THEREOF, AND DISPLAY APPARATUS |
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TW108131823A TWI716997B (zh) | 2019-02-23 | 2019-09-04 | 顯示面板及顯示裝置 |
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