CN2844974Y - 触摸型液晶显示器 - Google Patents
触摸型液晶显示器 Download PDFInfo
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- CN2844974Y CN2844974Y CNU2005200365007U CN200520036500U CN2844974Y CN 2844974 Y CN2844974 Y CN 2844974Y CN U2005200365007 U CNU2005200365007 U CN U2005200365007U CN 200520036500 U CN200520036500 U CN 200520036500U CN 2844974 Y CN2844974 Y CN 2844974Y
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Abstract
本实用新型公开了一种触摸型液晶显示器,包括液晶显示屏和触摸屏,所述液晶显示屏包括面偏光片,所述触摸屏从触摸面到液晶显示屏方向依次包括上电极面板、填充物和第二透明导电层,所述第二透明导电层附着在面偏光片的外表面。本实用新型在液晶显示屏的面偏光片上镀膜做成ITO偏光片,代替了触摸屏的玻璃基板,从而形成了一种超薄、高亮度、低成品、无内污、LCD与触摸屏二合一的触摸型液晶显示器。
Description
【技术领域】
本实用新型涉及一种液晶显示器,尤其涉及一种带有触摸屏的液晶显示器。
【背景技术】
现有的带有触摸屏的液晶显示器(LCD)的结构通常是液晶显示屏的表面附上触摸屏,所用的液晶显示屏的结构通常包括其上形成有透明电极的上玻璃基板和下玻璃基板,上下玻璃基板之间密封有液晶,上玻璃基板的外表面浮着有面偏光片,下玻璃基板的外表面附着有底偏光片。所用的触摸屏通常是玻璃/薄膜型的触摸屏,其结构如图1所示,包括上电极面板1和下电极面板2,上下电极面板的整个表面上分别涂布透明导电层3、4(通常是ITO),在透明导电层3的相平行的两个边缘上形成有第一电极5,在透明导电层4的相平行的两个边缘上形成有第二电极6,第一电极5和第二电极6基本相互垂直,第一电极5和第二电极6用于检测位置信号,形成触点的坐标。在上下电极面板中间设有用于将第一、二电极绝缘的的绝缘层7和用于将上下电极面板分开一定距离的填充物8,以及将上下电极面板粘在一起的粘接层9。将触摸屏的下电极面板粘贴在液晶显示屏的面偏光片上。这种结构的触摸型液晶显示器的缺点是:1)因触摸屏包括一作为下电极面板的玻璃基板,总厚约1.2mm左右,使整个产品厚度增加。2)另外触摸屏由玻璃和薄膜组成,由于光线通过玻璃会有一个折射与反射过程,对LCD的亮度会有较大的衰减,即我们常说的整体透过滤下降,使整个显示效果变差,也会引起流动环等光学干涉,所以整个产品的性能和结构受到很大影响。3)再者LCD加触摸屏多了一层ITO玻璃也就增加了整个产品的原材料,LCD与触摸屏组装增加了生产工序,对整个产品来说增加了不少生产成本。4)LCM(液晶模块)与触摸屏组装还会引入”内污”,增加LCD的返修成本。
【发明内容】
本实用新型的主要目的就是为了解决现有技术中存在的问题,提供一种触摸型液晶显示器,减小了液晶显示器的整体厚度、简化了生产工序、降低了成本,并且减少了内污的产生。
为实现上述目的,本实用新型提出的一种触摸型液晶显示器,包括液晶显示屏和触摸屏,所述液晶显示屏包括面偏光片,所述触摸屏从触摸面到液晶显示屏方向依次包括上电极面板、填充物和第二透明导电层,所述第二透明导电层附着在面偏光片的外表面。
本实用新型的有益效果是:在液晶显示屏的面偏光片的外表面上直接形成触摸屏的第二透明导电层,将面偏光片作为触摸屏的承载第二透明导电层和电极的下电极面板。因用偏光片镀膜后的ITO偏光片代替了原来的ITO玻璃,厚度减小约1.0mm左右;另外由于光线没有通过原来的触摸屏的ITO玻璃,也就减少了一个光线折射与反射过程,LCD整体透过率得到提升,显示效果变好,不会有流动环等光学干涉,所以整个产品的性能结构得到改善;也减少了整个产品的原材料及LCD与触摸屏生产工序,降低了生产成本;同时也使LCM的重要指标”内污”得以控制。
本实用新型的特征及优点将通过实施例结合附图进行详细说明。
【附图说明】
图1是现有的触摸屏结构示意图;
图2是本实用新型的一种实施例的液晶显示器结构示意图。
【具体实施方式】
如图2所示,液晶显示器的结构包括液晶显示屏和触摸屏。液晶显示屏从环境光向背光方向依次包括:面偏光片101,其中还可以包括位相补偿板;第二透明基板102,液晶层103、第一透明基板104和底偏光片105,第一、第二透明基板通常为玻璃基板,其上形成有ITO电极,两层ITO电极构成上下电极,液晶层103通过边框胶密封在第一、第二透明基板之间。触摸屏包括上电极面板1,上电极面板1的整个内侧表面上形成有第一透明导电层3,在第一透明导电层3上沿第一方向上形成有第一电极5,第一电极5较好的是位于第一透明导电层3表面相平行的两个边缘上。在面偏光片101的整个上表面形成有第二透明导电层4,在第二透明导电层4上沿第二方向上形成有第二电极6,第二电极6较好的是位于第二透明导电层4表面相平行的两个边缘上,第一电极5和第二电极6基本相互垂直,例如一个是X方向,另一个是Y方向。偏光片101、第二透明导电层4和第二电极6组成下电极面板。第一电极5和第二电极6用于检测位置信号,形成触点的坐标。在上电极面板1和面偏光片101中间设有用于将第一、二电极绝缘的的绝缘层7和用于将第一、二透明导电层分开一定距离的填充物8,还包括粘接层9,将上电极面板和下电极面板粘在一起。
本实施例的制作流程如下:
先在面偏光片上镀膜后即成为ITO偏光片。然后经过以下工序:
ITO偏光片——>封背——>阻值量测——>定位——>油墨印刷——>蚀刻去墨——>间细点印刷——>银路印刷——>绝缘印刷——>光学胶——>贴PC(这里PC指什么?)即形成下电极面板。下电极面板再与上电极面板热压组合——>切割裂片——>外观目检——>喷印——>接FPC(柔性线路板)——>封口胶——>线性测试——>电性测试——>半成品检验(具有触摸功能的ITO偏光片)。再转下道工艺即将具有触摸功能的ITO偏光片半成品贴附到未贴面偏光片的液晶显示屏上,组成了本方案的触摸型液晶显示屏。
综上所述,在液晶显示屏的面偏光片上直接镀膜做成ITO偏光片,减少了1片玻璃基板,从而形成了一种超薄、高亮度、低成品、无内污、LCD与触摸屏二合一的触摸型液晶显示器。
Claims (1)
1.一种触摸型液晶显示器,包括液晶显示屏和触摸屏,所述液晶显示屏包括面偏光片,所述触摸屏从触摸面到液晶显示屏方向依次包括上电极面板、填充物和第二透明导电层,其特征在于:所述第二透明导电层附着在面偏光片的外表面。
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