CN112757742B - 集成盖板及其制备方法、显示模组和显示装置 - Google Patents
集成盖板及其制备方法、显示模组和显示装置 Download PDFInfo
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Abstract
本发明涉及显示设备技术领域,具体而言,涉及一种集成盖板及其制备方法,还涉及包含有该集成盖板的显示模组和显示装置。集成盖板包括主体和剪切增稠材料层,主体由若干层状结构依次叠层形成,所述主体具有由各层状结构厚度方向的侧面叠层形成的立面;剪切增稠材料层包覆主体的立面的至少一部分,所述剪切增稠材料层的体系粘度随着剪切速率或剪切应力的增加而增加。通过在主体边缘设置了剪切增稠材料层,使得集成盖板边缘在不受冲击时较软,保证了集成盖板的弯折特性,集成盖板的边缘受到冲击时会迅速变硬,从而可以保护层状结构的边缘,防止产生裂纹源并扩展,提升模组在整机装配中的良率,降低成本。
Description
技术领域
本发明涉及显示设备技术领域,具体而言,涉及一种集成盖板及其制备方法,还涉及包含有该集成盖板的显示模组和显示装置。
背景技术
可折叠显示装置的面板备受市场欢迎,被广泛应用于显示设备领域。第一代柔性折叠显示装置保护盖板为高聚物集成结构,通常由高透过率、不具有特殊光学特性的材料组成,落球落笔性能较差;第二代柔性折叠显示装置开始使用高聚物和超薄玻璃等层状结构的集成结构,冲击性能有了一定的提升,但是通常超薄玻璃等层状结构的边缘存在一定数量和尺寸的缺陷,受到冲击时容易发生裂纹扩展导致失效。
发明内容
有鉴于此,本发明实施例提供了一种集成盖板以及包含有该集成盖板的显示模组和显示装置,以解决现有技术中存在的层状结构受到冲击时容易发生裂纹扩展导致失效的技术问题。
为了实现上述目的,根据发明实施例的一个方面,提供了一种集成盖板。
根据本发明实施例的集成盖板,其包括:
主体,由若干层状结构依次叠层形成,所述主体具有由各层状结构厚度方向的侧面叠层形成的立面;以及
剪切增稠材料层,其包覆主体的立面的至少一部分,所述剪切增稠材料层的体系粘度随着剪切速率或剪切应力的增加而增加。
在一些示例中,所述剪切增稠材料层环绕所述主体设置。
在一些示例中,所述主体包括依次叠层设置的光学层、第一粘结层和增强层,所述剪切增稠材料层包覆所述增强层的全部侧面以及所述光学层的至少部分侧面。
在一些示例中,所述增强层的材质为PI、PET或超薄玻璃。
在一些示例中,所述第一粘结层为PSA压敏胶或OCA光学胶。
在一些示例中,所述光学层包括依次叠层设置的基材层、偏光层、第一相位差层和第二相位差层,且相邻的各层结构之间通过粘结层连接,所述第二相位差层通过所述第一粘结层与所述增强层连接。
在一些示例中,所述基材层的边缘向外延伸形成突出于所述主体其他部分边缘的突出部,所述剪切增稠材料层由所述增强层的侧面延伸至所述突出部朝向所述增强层一侧的表面。
在一些示例中,至少一层所述层状结构的边缘形成有倒角,所述剪切增稠材料层包覆所述倒角。
在一些示例中,所述剪切增稠材料层的材质为硅系高分子材料、P4U或由P4U、EVA和TPU形成的混合材料。
为了实现上述目的,根据发明实施例的第二个方面,还提供了一种集成盖板的制备方法,用于制备本发明实施例第一方面提供的集成盖板。
根据本发明实施例的集成盖板的制备方法,其包括:
将若干层状结构依次叠层形成主体;
在主体的立面上形成剪切增稠材料层。
在一些示例中,所述在主体的立面上形成剪切增稠材料层包括:在所述主体的里面上通过涂布工艺形成所述剪切增稠材料层。
为了实现上述目的,根据发明实施例的第三个方面,还提供了一种显示模组,该显示模组包括本发明实施例第一方面提供的集成盖板。
为了实现上述目的,根据发明实施例的第四个方面,还提供了一种显示装置,该显示装置包括本发明实施例第三方面提供的显示模组。
采用本发明实施例提供的集成盖板、显示模组以及显示装置中,通过在主体边缘设置了剪切增稠材料层,使得集成盖板边缘在不受冲击时较软,保证了集成盖板的弯折特性,集成盖板的边缘受到冲击时会迅速变硬,从而可以保护层状结构的边缘,防止产生裂纹源并扩展,提升模组在整机装配中的良率,降低成本。
附图说明
构成本申请的一部分的附图用来提供对本申请的进一步理解,使得本申请的其它特征、目的和优点变得更明显。本申请的示意性实施例附图及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1为本发明实施例提供的第一种集成盖板的剖视图;
图2为本发明实施例提供的第一种集成盖板的俯视图;
图3为本发明实施例提供的第二种集成盖板的剖视图;
图4为本发明实施例提供的第二种集成盖板的俯视图;
图5为本发明实施例提供的第三种集成盖板的剖视图;
图6为本发明实施例提供的第一种光学层结构的剖视图;
图7为本发明实施例提供的第二种光学层结构的剖视图;以及
图8-图11为本发明实施例提供的集成盖板制备方法各步骤对应的产品结构示意图。
图中:
100、主体;200、剪切增稠材料层;
1、光学层;101、基材层;102、第二粘结层;103、偏光层、104、第三粘结层;105、第一相位差层;106、第四粘结层;107、第二相位差层;2、第一粘结层;3、增强层;4、离型膜;5、突出部;6、倒角。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分的实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本申请保护的范围。
需要说明的是,本申请的说明书和权利要求书及上述附图中的术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列单元的系统、产品或设备不必限于清楚地列出的那些单元,而是可包括没有清楚地列出的或对于这些产品或设备固有的其单元。
在本申请中,术语“上”、“下”、“内”、“中”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本申请及其实施例,并非用于限定所指示的装置、元件或组成部分必须具有特定方位,或以特定方位进行构造和操作。
并且,上述部分术语除了可以用于表示方位或位置关系以外,还可能用于表示其他含义,例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言,可以根据具体情况理解这些术语在本申请中的具体含义。
此外,术语“设置”、“连接”、“固定”应做广义理解。例如,“连接”可以是固定连接,可拆卸连接,或整体式构造;可以是机械连接,或电连接;可以是直接相连,或者是通过中间媒介间接相连,又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
参考图1和图2,本发明实施例提供一种集成盖板,该集成盖板包括主体100和剪切增稠材料层200,主体100由若干层状结构依次叠层形成,主体100具有由各层状结构厚度方向的侧面叠层形成的立面;剪切增稠材料层200包覆主体100的立面的至少一部分,剪切增稠材料层200的体系粘度随着剪切速率或剪切应力的增加而增加。本实施例提供的集成盖板中,通过在主体100边缘设置的剪切增稠材料层200,使得集成盖板边缘在不受冲击时较软,保证了集成盖板的弯折特性,集成盖板的边缘受到冲击时会迅速变硬,从而可以保护层状结构的边缘,防止产生裂纹源并扩展,提升在整机装配中的良率,降低成本。
在上面的实施例中,剪切增稠材料层200选择为具有剪切增稠现象的非牛顿流体,剪切增稠现象是部分非牛顿流体的本身特性,也被称为流胀性,是指材料的体系粘度随着剪切速率或剪切应力的增加而增加的非牛顿流体行为。剪切增稠材料指具有剪切增稠性质的材料,当其遭到瞬间剧烈的外力加载时材料的分子间互相锁定,硬度增加从而提高了其抵抗瞬时外力的能力。并且上述过程具有可逆性,且转换时间极短,例如可达到毫秒级别。非牛顿流体是不满足牛顿黏性实验定律的流体,即其剪应力与剪切应变率之间不是线性关系的流体。粘度对剪切速度敏感,非牛顿流体的粘度若随剪切速度的增加而升高,称为剪切增稠现象。采用上述实施例的方案,主体100的各层状结构边缘在剪切增稠材料层200的包覆下,可以实现较优的保护作用,在作为剪切增稠材料层200的非牛顿流体受到的冲击较为微弱时,非牛顿流体不会产生剪切增稠现象,当作为剪切增稠材料层200的非牛顿流体受到瞬间冲击或连续强烈震动时,非牛顿流体在剪切增稠现象作用下密度瞬间增大,为主体100提供接近固体性能的瞬间强支撑。采用上述的剪切增稠材料层200作为保护结构,不需要电力或其他任何信号驱动控制,所以集成盖板在非工作状态下或运输过程中,均可以得到剪切增稠材料层200的实时保护,具有抗震动、抗冲击的性能。
根据本本发明公开的具体实施例中,形成剪切增稠材料层200的剪切增稠材料不受特别限制,本领域技术人员可根据实际需要选择熟悉的材料形成具有剪切增稠效应的剪切增稠材料。例如,剪切增稠材料层200的材质可以为硅系高分子材料,该硅系高分子材料的合成方法为首先将硅氧烷、硼酸和白炭黑进行混合,然后再加入二甲基硅油混合均匀,可以合成胶泥态硅系高分子材料,可以作为剪切增稠材料层200的材料使用。再如,剪切增稠材料层200的材质可以为P4U,该材料由西安理工大学“P4U”智能材料团队研制开发,具体的材料组成参见公开号为CN104559190B和CN104862975B的专利公开文本,P4U为非牛顿流体物质,在常态下保持松弛的状态,柔软而具有弹性,一旦遭到剧烈碰撞或冲击的时候,分子间立刻相互锁定,迅速收紧变硬从而消化外力,形成一层防护层,当外力消失后,材料会回复到它最初的松弛软弹状态,它可以在瞬间对不同的冲击情况作出不同的反应。再如,剪切增稠材料层200的材质还可以为P4U、EVA和TPU形成的混合材料,通过在P4U中添加EVA和TPU,可以调整材料的部分性能,本领域技术人员可以进行相应的调整。
在本发明的一些方案中,参考图2所示,集成盖板中的剪切增稠材料层200环绕主体100设置,该设置形式可以实现对主体100边缘360°的防护,无论主体100边缘受到哪个方向的冲击力,剪切增稠材料层200均可以发挥作用。具体在附图2中,盖板的形状为矩形,剪切增稠材料层200的端面形状为环绕主体100设置的矩形环。
在本发明的一些方案中,形成主体100的各层状结构具体根据该盖板的设计需求和使用需求来具体确定,本发明不做具体限制。作为一种示例,本发明说明书附图给出了一种具体的主体100叠层结构,如图1所示,主体100包括依次叠层设置的光学层1、第一粘结层2和增强层3,增强层3通过第一粘结层2来实现与光学层1的连接,剪切增稠材料层200包覆增强层3的全部侧面、第一粘结层2的全部侧面以及光学层1的部分侧面或全部侧面。
在图1所示的集成盖板结构中,增强层3的材质为PI、PET或超薄玻璃,其厚度通常可以为30-100um;第一粘结层2可以选择为PSA压敏胶或OCA光学胶,具体材质可以为亚克力、硅胶或聚氨酯。
在本发明一些技术方案中,集成盖板结构中的光学层1包括依次叠层设置的基材层101、偏光层103、第一相位差层105和第二相位差层107,且相邻的各层结构之间通过粘结层连接,第二相位差层107通过第一粘结层2与增强层3连接。如图6所示,给出了一种光学层1的具体设置形式,光学层1包括依次叠层设置的基材层101、第二粘结层102、偏光层103、第三粘结层104、第一相位差层105、第四粘结层106和第二相位差层107,此外为了实现与增强层3的快速连接,如图7所示,可以将第一粘结层2设置为第二相位差层107背离第四粘结层106的表面,并在第一粘结层2的表面粘贴离型膜4。
应当理解的是,本公开实施例的基材层101的材质包括但不限于COP、PET或PI,在具有防水作用的同时,还具有良好的柔性,这样设计可进一步保证集成盖板整体具有良好的柔性,便于弯折。基材层101位于偏光层103远离第一相位差层105的一侧,基材层101在对偏光层103进行保护的同时,还可提高光学层1整体的平整性。基材层101的厚度可为10μm至50μm,在保证良好支撑性能的同时,还可保证基材层101的可弯折性能。基材层101与偏光层103之间通过第二粘结层102粘接,第二粘结层102的材料可包括聚甲基丙烯酸甲酯,即亚克力胶,第二粘结层102的厚度可为0.1μm至3μm,但不限于此,可视具体情况而定。
应当理解的是,本公开实施例的偏光层103可包括酸性物质,此酸性物质指的是遇水呈酸性的物质;举例而言,本公开实施例的偏光层103可为碘系偏光层103,其中,碘系偏光层103是经过碘染料染色得到的,并基于含晶体的光学二向色性具备偏光性能。经过染色后,碘元素以碘离子的形态存在于偏光层103中,碘离子呈酸性,也就是说,前述提到的酸性物质可包括碘元素。其制作方法可包括:将PVA(聚乙烯醇)膜浸入在碘离子溶液中,以使得碘离子扩散至PVA膜中,微热后拉伸,PVA膜变长的同时,也变得又窄又薄,PVA分子本来是任意角度无规则性分布的,受力拉伸后就逐渐一致地偏转于作用力的方向,附着在PVA上具有二色性的碘分子也跟随者有方向性,从而制成具有偏光作用的偏光层103。偏光层103的厚度优选为1μm至15μm,但不限于此,偏光层103的厚度也可在其他取值范围内,具体视具体情况而定。
应当理解的是,本公开实施例的第一相位差层105优选为半波片,第二相位差层107优选为四分之一波片,通过半波片和四分之一波片的共同作用,用于控制和调节光子的偏振特性。半波片通过第三粘结层104与偏光层103连接,半波片和四分之一波片通过第四粘结层106粘接,半波片和四分之一波片的厚度均可为0.1μm至5μm,但不限于此。而第三粘结层104和第四粘结层106的厚度均可为0.1μm至3μm,但不限于此。其中,第三粘结层104和第四粘结层106的材料可包括聚甲基丙烯酸甲酯,即第三粘结层104和第四粘结层106可为亚克力胶,这样可以有效保证第二相位差层107、第一相位差层105、偏光层103的粘接稳定性,同时,聚甲基丙烯酸甲酯还可有效地阻止偏光层103中的碘离子的渗透。
应当理解的是,本公开实施例的离型膜4通过第一粘结层2贴合在第二相位差层107上,可以对整个光学层1进行保护,在需要将光学层1与增强层3贴合时,只需要将离型膜4撕掉,以露出第一粘结层2,然后使第一粘结层2与增强层3贴合即可。
参考图3-图5,在本发明的一些方案中,基材层101的边缘向外延伸形成突出于主体100其他部分边缘的突出部5,剪切增稠材料层200由增强层3的侧面延伸至突出部5朝向增强层3一侧的表面。一方面,该突出部5的上表面没有设置其他的层状结构,用于为后续的制备显示模组的过程中为油墨边框工艺提供预留空间,另一方面突出部5与主体100的其他部分之间形成一个直角结构,剪切增稠材料层200在该直角结构区域同时与主体100的立面和突出部5的上表面接触,增加了接触面积,并且剪切增稠材料在该区域从两个方向上进行附着,提高了剪切增稠材料层200与主体100之间的连接牢固性,并且通过突出部5的阻挡,剪切增稠材料无法从基材层101这一端脱离主体100。
在本发明的一些方案中,至少一层层状结构的边缘形成有倒角6,剪切增稠材料层200包覆倒角6。通过倒角6的设置,可以增加剪切增稠材料层200与主体100的接触面积,并且剪切增稠材料层200在倒角6处会形成伸入倒角6区域的触角结构,该触角结构可以有效限制剪切增稠材料层200相对于主体100的移动,提高了剪切增稠材料层200与主体100之间的连接牢固性。例如,在附图5中,倒角6设置在增强层3的上缘和下缘,该倒角6可以通过打磨工艺或者蚀刻工艺形成。
本发明实施例还提供一种集成盖板的制备方法,用于制备如以上任一项技术方案中的集成盖板,集成盖板的制备方法包括以下步骤1和步骤2。
步骤1,将若干层状结构依次叠层形成主体100。
具体地,在该步骤中,首先,参考图8,将基材层101、第二粘结层102、偏光层103、第三粘结层104、第一相位差层105、第四粘结层106、第二相位差层107依次叠层形成如图6所示的光学层1;然后,参考图9,将光学层1切割至基材层101,使得基材层101形成突出部5,具体的切割方式优选为激光切割;最后,参考图10,将增强层3通过第一粘结层2固定在光学层1上,形成主体100结构。需要说明的是,将光学层1切割至基材的步骤为非必须的步骤,本领域技术人员可以根据后续工艺的需求来决定是否实施该步骤。
步骤2,在主体100的立面上形成剪切增稠材料层200。
在该步骤中,参考图11,具体可以通过在主体100的立面上通过涂布工艺形成剪切增稠材料层200,涂布工艺的具体方式也不受特别限制,本领域技术人员可根据实际情况进行选择,例如可通过包括但不限于喷涂、涂覆、刮涂等方式将剪切增稠材料设置主体100的立面上,形成含有剪切增稠材料的剪切增稠材料层200。
以上为本发明实施例关于集成盖板及其制备方法的示例性描述和说明,集成盖板的其他构成以及其制备方法的其他操作对于本领域的普通技术人员来说是可知的,在此不再详细描述,本领域技术人员可以参考现有技术的记载进行理解和应用。
本申请实施例还提供了一种显示模组,其包括本申请上述实施例提供的集成盖板。本申请实施例所公开的显示模组由于包括上述实施例提供的集成盖板,因此具有该集成盖板的显示模组也具有上述所有的技术效果,在此不再一一赘述。
本申请实施例还提供了一种显示装置,其包括本申请上述实施例提供的显示模组。该显示装置可以为:液晶面板、电子纸、有机发光二极管(OLED)面板、有源矩阵有机发光二极管(AMOLED)面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框或导航仪等任何具有显示功能的产品或部件。本申请实施例所公开的显示装置由于包括上述实施例提供的显示模组,因此具有该显示模组的显示装置也具有上述所有的技术效果,在此不再一一赘述。
显示模组和显示装置的其他构成、原理以及制备方法对于本领域的普通技术人员来说是可知的,在此不再详细描述。
本说明书中部分实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。
以上仅是本发明的具体实施方式,使本领域技术人员能够理解或实现本发明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所申请的原理和新颖特点相一致的最宽的范围。
Claims (10)
1.一种集成盖板,其特征在于,包括:
主体,由若干层状结构依次叠层形成,所述主体具有由各层状结构厚度方向的侧面叠层形成的立面;以及
剪切增稠材料层,其包覆主体的立面的至少一部分,所述剪切增稠材料层的体系粘度随着剪切速率或剪切应力的增加而增加;
所述剪切增稠材料层环绕所述主体设置;
所述主体包括依次叠层设置的光学层、第一粘结层和增强层,所述光学层包括依次叠层设置的基材层、偏光层、第一相位差层和第二相位差层,且相邻的各层结构之间通过粘结层连接,所述第二相位差层通过所述第一粘结层与所述增强层连接;
所述基材层的边缘向外延伸形成突出于所述主体其他部分边缘的突出部,所述剪切增稠材料层由所述增强层的侧面延伸至所述突出部朝向所述增强层一侧的表面。
2.根据权利要求1所述的集成盖板,其特征在于,所述剪切增稠材料层包覆所述增强层的全部侧面以及所述光学层的至少部分侧面。
3.根据权利要求2所述的集成盖板,其特征在于,所述增强层的材质为PI、PET或超薄玻璃。
4.根据权利要求2所述的集成盖板,其特征在于,所述第一粘结层为PSA压敏胶或OCA光学胶。
5.根据权利要求1所述的集成盖板,其特征在于,至少一层所述层状结构的边缘形成有倒角,所述剪切增稠材料层包覆所述倒角。
6.根据权利要求1所述的集成盖板,其特征在于,所述剪切增稠材料层的材质为硅系高分子材料或由P4U、EVA和TPU形成的混合材料。
7.一种集成盖板的制备方法,用于制备如权利要求1-6任一项所述的集成盖板,其特征在于,包括:
将若干层状结构依次叠层形成主体;
在主体的立面上形成剪切增稠材料层。
8.根据权利要求7所述的制备方法,其特征在于,所述在主体的立面上形成剪切增稠材料层包括:在所述主体的立面上通过涂布工艺形成所述剪切增稠材料层。
9.一种显示模组,其特征在于,包括如权利要求1-6任一项所述的集成盖板。
10.一种显示装置,其特征在于,包括如权利要求9所述的显示模组。
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