CN114675449A - 一种宽视角液晶显示器用偏光片 - Google Patents
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Abstract
本发明公开了一种宽视角液晶显示器用偏光片,包括安装在液晶显示器前框处的偏光片本体;所述偏光片本体包括基板、叠加在基板上表面的光入射面层、以及叠加在基板下表面的光分散面层;所述光入射面层上设置有减震连接件,减震连接件皆自上而下将光入射面层、基板和光分散面层结合于一体。本发明具有极佳的耐候性能、耐用性能、耐高温性能和色彩对比度,可适用于各种宽视角液晶显示器;同时能够将偏光片的各结构层拉持于一体,提高偏光片边角的结构牢固性,有效防止使用时偏光片的边角各结构层间出现弯折分离的问题,降低偏光片使用时各结构层之间产生的接触及晃动磨损,有利于该偏光片的长期使用。
Description
技术领域
本发明涉及偏光片领域,具体为一种宽视角液晶显示器用偏光片。
背景技术
随着信息技术的发展,显示器在信息科学的各个方面得到普遍的应用,随着电子产品对于液晶显示模块的要求日益增加,对应视角宽度与对比度的要求也越来越高;其中,偏光片是液晶显示模块中必不可少的组件之一。
偏光片的全称是偏振光片,液晶显示器的成像必须依靠偏振光,所有的液晶都有前后两片偏振光片紧贴在液晶玻璃,组成总厚度1mm左右的液晶片,偏光片的使用效果好坏,直接影响到液晶显示模块,继而影响到液晶显示器的显像效果。
偏光片在使用时,由于偏光片边角的结构牢固性差,偏光片边角与显示器前框之间易产生磨损,也容易让偏光片的边角各结构层间出现弯折分离的问题,一定程度上增加了偏光片在使用时各结构层发生歪斜位移情况的几率;同时在不同方向上观看显示器时,由于视角改变偏光片的色彩对比度差,致使显示器的背景底色出现不一致的情况,不利于该偏光片的长期使用。
发明内容
本发明的目的在于提供一种宽视角液晶显示器用偏光片,以解决上述背景技术中提出的偏光片色彩对比度差、偏光片边角的结构牢固性差易出现磨损及各结构层间易产生弯折分离的问题。
为实现上述目的,本发明提供如下技术方案:
一种宽视角液晶显示器用偏光片,包括安装在液晶显示器前框处的偏光片本体;所述偏光片本体包括基板、叠加在基板上表面的光入射面层、以及叠加在基板下表面的光分散面层;
所述光入射面层上设置有减震连接件,减震连接件皆自上而下将光入射面层、基板和光分散面层结合于一体,且减震连接件的竖向高度不超过偏光片本体的厚度。
优选的,所述光入射面层的上表面设置有保护层,该光入射面层包含增亮膜层、超透明聚酯薄膜层和抗静电层,且保护层、增亮膜层、超透明聚酯薄膜层、抗静电层和基板皆从上至下依次通过第一粘接层两两胶合于一体。
优选的,所述保护层由相互胶合的防雾膜与防刮膜构成,该防刮膜通过第三粘接层与增亮膜层胶粘于一体。
优选的,所述增亮膜层采用复合增亮膜,该复合增亮膜为棱镜-棱镜复合膜、微透镜-棱镜复合膜、棱镜-微透镜复合膜中的任意一种。
优选的,所述光分散面层的下表面设置有离型膜,该光分散面层包含强化层、TAC膜和滤光层,且离型膜、强化层、TAC膜、滤光层和基板皆从下至上依次通过第二粘接层两两胶合于一体。
优选的,所述强化层由耐磨膜层与聚碳酸酯薄膜层构成,该耐磨膜层与聚碳酸酯薄膜层通过树脂胶粘合于一体,聚碳酸酯薄膜层外表面为磨砂面,且聚碳酸酯薄膜为透明聚碳酸酯薄膜。
优选的,所述减震连接件设置有至少三组,每组的减震连接件皆安装在偏光片本体的顶端边缘位置,且减震连接件的设置数量与偏光片本体的边角数量相同。
优选的,所述减震连接件包含贴于光入射面层顶面的减震部、以及固连在减震部底端并依次穿过光入射面层、基板和光分散面层的插入部。
优选的,所述减震部采用上端具有凸起的橡胶块,该橡胶块的截面外形呈圆形或椭圆形结构,橡胶块的底部紧贴于保护层的上表面,且凸起呈半球状结构;所述减震部与插入部相互垂直,该插入部为底端设置呈锥形结构的金属丝,且金属丝采用铁丝、铝丝、铜丝的任意一种。
优选的,所述偏光片本体的厚度不超过0.3mm,该偏光片本体的俯视外形呈矩形或圆角矩形结构。
本发明的有益效果是:本发明具有极佳的耐候性能、耐用性能、耐高温性能和色彩对比度,可适用于各种宽视角液晶显示器;同时能够在偏光片本体顶端边缘形成凸起,并将偏光片的各结构层拉持于一体,从而让偏光片边角结合的更加牢固,大幅度提高偏光片边角的结构牢固性,减少了偏光片安装时偏光片边角与显示器前框之间产生的接触磨损,有效防止使用时偏光片的边角各结构层间出现弯折分离的问题,极大程度缩减了偏光片使用时各结构层发生歪斜位移情况的几率,进一步降低偏光片使用时各结构层之间产生的接触及晃动磨损,有利于该偏光片的长期使用。
附图说明
图1为本发明安装状态下的结构示意图;
图2为本发明偏光片本体的结构剖视图;
图3为本发明图1的A处结构放大示意图;
图4为本发明减震连接件的结构示意图。
图中:1前框、2偏光片本体、21基板、22抗静电层、23超透明聚酯薄膜层、24增亮膜层、25保护层、26滤光层、27TAC膜、28强化层、29离型膜、3减震连接件、31橡胶块、32凸起、33金属丝。
具体实施方式
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,所描述的实施例仅仅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做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。
实施例一
请参阅图1-4,一种宽视角液晶显示器用偏光片,包括安装在液晶显示器前框1处的偏光片本体2;偏光片本体2包括基板21、叠加在基板21上表面的光入射面层、以及叠加在基板21下表面的光分散面层;光入射面层上设置有减震连接件3,减震连接件3皆自上而下将光入射面层、基板21和光分散面层结合于一体,且减震连接件3的竖向高度不超过偏光片本体2的厚度。
其中,光入射面层的上表面设置有保护层25,该光入射面层包含增亮膜层24、超透明聚酯薄膜层23和抗静电层22,且保护层25、增亮膜层24、超透明聚酯薄膜层23、抗静电层22和基板21皆从上至下依次通过第一粘接层两两胶合于一体。
在其他实施方式中,抗静电层22采用硫酸衍生物、磷酸衍生物、胺类、季铵盐、咪唑类以及环氧乙烷衍生物中的一种或多种涂覆而成;保护层25由相互胶合的防雾膜与防刮膜构成,该防刮膜通过第三粘接层与增亮膜层24胶粘于一体。
其中,防雾膜采用CPP薄膜,CPP薄膜具有优异的清晰度和光洁度,保证偏光片本体2的透光性,同时CPP薄膜具有优良的水气阻隔性,能起到良好的防雾效果;防刮膜是由透明光学聚酯薄膜涂布特殊的保护胶后,再贴合透明聚酯薄膜的离型膜29,并于硬化处理面贴合透明聚酯薄膜保护膜组成的高科技防刮保护膜,防刮膜能够避免偏光片在使用时被刮花,提高偏光片的使用效果及使用寿命;增亮膜层24采用复合增亮膜,该复合增亮膜为棱镜-棱镜复合膜。
光分散面层的下表面设置有离型膜29,该光分散面层包含强化层28、TAC膜27和滤光层26,且离型膜29、强化层28、TAC膜27、滤光层26和基板21皆从下至上依次通过第二粘接层两两胶合于一体。
其中,第一粘接层、第二粘接层和第三粘接层皆采用压敏胶,压敏胶的胶厚18-40μm,分子量大小40-100万,采用的压敏胶成分包括丙烯酸共聚物10-60%。
强化层28由耐磨膜层与聚碳酸酯薄膜层构成,该耐磨膜层与聚碳酸酯薄膜层通过树脂胶粘合于一体,聚碳酸酯薄膜层外表面为磨砂面,且聚碳酸酯薄膜为透明聚碳酸酯薄膜;通过设置的强化层28,可极大程度上提高偏光片的耐磨性、透明性和防水雾性能。
减震连接件3设置有至少三组,每组的减震连接件3皆安装在偏光片本体2的顶端边缘位置,且减震连接件3的设置数量与偏光片本体2的边角数量相同;减震连接件3包含贴于光入射面层顶面的减震部、以及固连在减震部底端并依次穿过光入射面层、基板21和光分散面层的插入部;减震部采用上端具有凸起32的橡胶块31,该橡胶块31的截面外形呈圆形或椭圆形结构,橡胶块31的底部紧贴于保护层25的上表面,且凸起32呈半球状结构;减震部与插入部相互垂直,该插入部为底端设置呈锥形结构的金属丝33,且金属丝33采用铁丝、铝丝、铜丝的任意一种。
其他实施方式中,基板21采用聚对苯二甲酸乙二酯基膜或聚对苯二甲酸丁二酯基膜,该基板21的厚度为50nm。
需要说明的是,依靠金属丝33,可将光入射面层、基板21和光分散面层的各层牢牢拉持于一体,以此提高偏光片整体的结构,且在橡胶块31的作用下,在偏光片本体2顶面上形成具有减震作用的凸起32,当偏光片本体2安装在显示器前框1上时,具有减震作用的凸起32,能够降低偏光片本体2与前框1之间所产生的接触磨损及震动磨损,从而延长了偏光片本体2的使用寿命。
实施例二
本实施例提供的一种宽视角液晶显示器用偏光片,其结构与实施例一基本一致,区别在于偏光片本体2的厚度不超过0.3mm,该偏光片本体2的俯视外形呈矩形或圆角矩形结构;当偏光片本体2的俯视外形呈矩形或圆角矩形结构时,减震连接件3设置有四组,且每组的减震连接件3皆安装在偏光片本体2的顶端四角处;增亮膜层24采用微透镜-棱镜复合膜;其中,第一粘接层、第二粘接层和第三粘接层皆采用压敏胶,压敏胶的胶厚18-40μm,分子量大小40-100万,采用的压敏胶成分包括丙烯酸共聚物10-60%。
其他实施方式中,基板21采用聚对苯二甲酸乙二酯基膜或聚对苯二甲酸丁二酯基膜,该基板21的厚度为125nm。
实施例三
本实施例提供的一种宽视角液晶显示器用偏光片,其结构与实施例一基本一致,区别在于当偏光片本体2的俯视外形呈矩形或圆角矩形结构时,减震连接件3设置有六组,且每组的减震连接件3皆安装在偏光片本体2顶端的边缘位置;增亮膜层24采用复合增亮膜,该复合增亮膜为棱镜-微透镜复合膜;其中,第一粘接层、第二粘接层和第三粘接层皆采用增粘剂,增粘剂为松香甘油酯、改性松香树脂、氢化松香的一种或多种。
其他实施方式中,基板21采用聚对苯二甲酸乙二酯基膜或聚对苯二甲酸丁二酯基膜,该基板21的厚度为200nm。
综上所述,对比实施例一、实施例二和实施例三所制得的偏光片,当气温在70℃-90℃、湿度80%-90%,且使用了400-600小时后,各实施例偏光片的透过率变化值AYs为:实施例一的变化值为3.5、对比度为1200,实施例二的变化值为2.9、对比度为2000,实施例三的变化值为3.0、对比度为3500。
当气温在60℃-80℃、湿度85%-100%,且使用了900-1200小时、并加入减震连接件3之后,各实施例偏光片的透过率变化值AYs为:实施例一的变化值为3.8、对比度为1200,实施例二的变化值为3.1、对比度为2000,实施例三的变化值为3.5、对比度为3500。
使用本发明实施例一、实施例二和实施例三制得的偏光片,让本发明的偏光片具有极佳的耐候性能,能够大幅度提高偏光片的耐高温性能和色彩对比度,以适用于各种宽视角液晶显示器;同时依靠减震连接件3,能够在偏光片本体2顶端边缘形成凸起32,将偏光片的各结构层拉持于一体,让偏光片边角结合的更加牢固,提高偏光片边角的结构牢固性,降低了偏光片安装时偏光片边角与显示器前框1之间产生的接触磨损,一定程度缩减了偏光片使用时各结构层发生歪斜位移情况的几率,进一步降低偏光片使用时各结构层之间产生的接触及晃动磨损,从而延长偏光片的使用寿命,使得偏光片的耐用性能显著提高。
需要说明的是,增亮膜层24可增加该偏光片的色彩饱和度,以提高该偏光片的色彩对比度;抗静电层22能够提高该偏光片的抗静电性能,以增加该偏光片的使用安全性;基板21亦可采用PMMA,即采用聚甲基丙烯酸酯,让该偏光片具有极佳的耐韧性、耐老化性以及电绝缘性能,以此来延长该偏光片的使用寿命,提高该偏光片的使用安全性能。
尽管已示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。具体实施方式中未阐述的部分均为现有技术或公知常识。
Claims (10)
1.一种宽视角液晶显示器用偏光片,包括安装在液晶显示器前框处的偏光片本体;其特征在于:所述偏光片本体包括基板、叠加在基板上表面的光入射面层、以及叠加在基板下表面的光分散面层;
所述光入射面层上设置有减震连接件,减震连接件皆自上而下将光入射面层、基板和光分散面层结合于一体,且减震连接件的竖向高度不超过偏光片本体的厚度。
2.根据权利要求1所述的宽视角液晶显示器用偏光片,其特征在于:所述光入射面层的上表面设置有保护层,该光入射面层包含增亮膜层、超透明聚酯薄膜层和抗静电层,且保护层、增亮膜层、超透明聚酯薄膜层、抗静电层和基板皆从上至下依次通过第一粘接层两两胶合于一体。
3.根据权利要求2所述的宽视角液晶显示器用偏光片,其特征在于:所述保护层由相互胶合的防雾膜与防刮膜构成,该防刮膜通过第三粘接层与增亮膜层胶粘于一体。
4.根据权利要求2所述的宽视角液晶显示器用偏光片,其特征在于:所述增亮膜层采用复合增亮膜,该复合增亮膜为棱镜-棱镜复合膜、微透镜-棱镜复合膜、棱镜-微透镜复合膜中的任意一种。
5.根据权利要求1所述的宽视角液晶显示器用偏光片,其特征在于:所述光分散面层的下表面设置有离型膜,该光分散面层包含强化层、TAC膜和滤光层,且离型膜、强化层、TAC膜、滤光层和基板皆从下至上依次通过第二粘接层两两胶合于一体。
6.根据权利要求5所述的宽视角液晶显示器用偏光片,其特征在于:所述强化层由耐磨膜层与聚碳酸酯薄膜层构成,该耐磨膜层与聚碳酸酯薄膜层通过树脂胶粘合于一体,聚碳酸酯薄膜层外表面为磨砂面,且聚碳酸酯薄膜为透明聚碳酸酯薄膜。
7.根据权利要求1所述的宽视角液晶显示器用偏光片,其特征在于:所述减震连接件设置有至少三组,每组的减震连接件皆安装在偏光片本体的顶端边缘位置,且减震连接件的设置数量与偏光片本体的边角数量相同。
8.根据权利要求1或7所述的宽视角液晶显示器用偏光片,其特征在于:所述减震连接件包含贴于光入射面层顶面的减震部、以及固连在减震部底端并依次穿过光入射面层、基板和光分散面层的插入部。
9.根据权利要求8所述的宽视角液晶显示器用偏光片,其特征在于:所述减震部采用上端具有凸起的橡胶块,该橡胶块的截面外形呈圆形或椭圆形结构,橡胶块的底部紧贴于保护层的上表面,且凸起呈半球状结构;所述减震部与插入部相互垂直,该插入部为底端设置呈锥形结构的金属丝,且金属丝采用铁丝、铝丝、铜丝的任意一种。
10.根据权利要求1所述的宽视角液晶显示器用偏光片,其特征在于:所述偏光片本体的厚度不超过0.3mm,该偏光片本体的俯视外形呈矩形或圆角矩形结构。
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