CN106527011A - 柔性电子纸触摸显示屏 - Google Patents
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Abstract
本发明涉及一种柔性电子纸触摸显示屏,其包括触摸部件和位于触摸部件下方的电子纸显示屏,所述触摸部件作为该柔性电子纸触摸显示屏的输入装置。所述电子纸显示屏包括透明导电薄膜、电泳显示层和驱动背板并且由外至内依次层叠,电泳显示层包括多个显示微单元,每个显示微单元包括电泳液及悬浮于电泳液中的电泳粒子,驱动背板和透明导电薄膜用在电泳显示层的两端施加电压信号。所述触摸部件的触摸层面板由石墨烯制成,石墨烯具有很好的柔韧性,使得该柔性电子纸触摸显示屏既具有触摸功能,又具有很好的柔性,不易损坏。
Description
技术领域
本发明涉及显示器件领域,尤其涉及一种柔性电子纸触摸显示屏。
背景技术
像纸张一样柔软、轻薄的电子纸,在各个领域发挥着越来越大的作用。现有的电子纸显示屏普遍采用电子笔作为输入方式,但是电子笔作为输入方式很不方便。为此,相关技术采用触摸屏技术作为电子纸的输入方式,但是现在的触摸屏不具有柔软、可挠性,因此不能很好的融入电子纸的使用。
发明内容
基于现有技术的不足,本发明需要解决的技术问题是提供一种柔性电子纸触摸显示屏。
本发明实施例提供一种柔性电子纸触摸显示屏,其包括触摸部件和位于触摸部件下方的电子纸显示屏,所述触摸部件包括保护层和触摸层并且由外至内依次层叠,触摸部件的触摸层面板由石墨烯制成,所述电子纸显示屏包括透明导电薄膜、电泳显示层和驱动背板并且由外至内依次层叠,所述透明导电薄膜由石墨烯制成,所述触摸部件作为该柔性电子纸触摸显示屏的输入装置。
优选地,所述触摸部件与电子纸显示屏之间设有粘接层。
优选地,所述透明导电薄膜与所述电泳显示层之间夹持有由导电高分子聚合物制成的缓冲层,或者所述透明导电薄膜中添加有导电高分子聚合物。
优选地,所述导电高分子聚合物是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。
优选地,所述缓冲层满足下述条件的至少其一:体积电阻率≥1*10E-10Ω.cm,玻璃化转化温度Tg≤-40℃,透光率≥94%,成膜后表面能小于60mN/m。
优选地,所述缓冲层的厚度5um≤t≤25um。
优选地,所述触摸部件还包括过渡层,所述过渡层夹持在保护层和触摸层之间。
优选地,所述过渡层是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。
下面结合附图详细说明本发明,其作为本说明书的一部分,通过实施例来说明本发明的原理,本发明的其他方面、特征及其优点通过该详细说明将会变得一目了然。
附图说明
图1至图2为本发明柔性电子纸触摸显示屏的两个实施例的结构示意图。
图3为图2的触摸部件的一个实施例的结构示意图。
图4至6为图2的一个实施例的结构示意图。
1:触摸面板;2:光学胶;3:底部传感器;4:柔性电路板;10:触摸部件;11:保护层;12:触摸层;13:过渡层;20:粘接层;30:电子纸显示屏;31:透明导电薄膜;32:缓冲层;33:电泳显示层;34:电泳粒子;35:驱动底板;36:塑料基材。
具体实施方式
为了使本发明的发明目的、技术方案及其技术效果更加清晰,以下结合附图和具体实施方式对本发明进行详细说明。应当理解的是,本说明书中描述的具体实施方式仅仅是为了解释本发明,并非为了限定本发明。
请参考图1,本发明实施例提供一种柔性电子纸触摸显示屏,其包括触摸部件10和位于触摸部件10下方的电子纸显示屏30,以及设置在触摸部件10和电子纸显示屏30之间的粘接层20,该粘接层20包括粘接剂,用于粘结触摸部件10和电子纸显示屏30。
请参考图2,触摸部件10作为该柔性电子纸触摸显示屏的输入装置,采用投射式电容触摸屏的技术,包括保护层11和触摸层12并且由外至内依次层叠。保护层11优选地由二氧化硅或三氧化二铝制成,保护层11可以起到防水和防污的作用,防止触摸部件10在使用过程中遭受损害。
请参考图3,触摸层12包括触摸面板1、光学胶2和底部传感器3并且由外至内依次层叠。触摸面板1通过柔性电路板4与底部传感器3连接,触摸面板1和底部传感器3通过光学胶2黏接。优选地,触摸面板1由石墨烯制成。触摸面板1是触摸层12的上部电路部分,由银浆印刷和石墨烯蚀刻结合布线。底部传感器是触摸层12的下部电路部分,通过印刷电路进行布线连接。当用户手指点触面板时,就会并联一个电容到底部传感器的电路中去,从而使底部传感器在该条扫描线上的总电容量发生变化。专用控制IC就会根据扫描前后的电容变化计算出触摸点的坐标位置,从而生成控制驱动背板35的信号。
请参考图4,为了提高保护层11和触摸层12的结合程度,触摸部件10还包括过渡层13,过渡层13夹持在保护层11和触摸层12之间,过渡层13是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。
请参考图2,电子纸显示屏30包括透明导电薄膜31、电泳显示层33和驱动背板35并且由外至内依次层叠连接上。电泳显示层33为微胶囊电泳显示层,电泳显示层33包括多个显示微单元34,每个显示微单元34包括电泳液及悬浮于电泳液中的电泳粒子。驱动背板35优选地选用柔性TFT背板,驱动背板35上方设置有若干驱动电极。驱动背板35和透明导电薄膜31用于在电泳显示层33的两端施加电压信号。驱动底板30上具有驱动电路,驱动背板30和透明导电薄膜10均连接电路,通过控制驱动底板30上的电压信号,来控制电泳显示层33中微胶囊内的电泳粒子21发生电泳,从而进行特定图案或文字的显示。
请参考图5,在一些优选实施例中,透明导电薄膜31由石墨烯制成,较薄的石墨烯即具有良好的导电性能,而且具有很好的柔韧性,在制作可卷曲的显示屏时具有更好的优势。为了提高石墨烯与电泳显示层33的结合强度,可以在透明导电薄膜31与电泳显示层33之间夹持有由导电高分子聚合物制成的缓冲层32,或者透明导电薄膜31中添加有导电高分子聚合物。导电高分子聚合物是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。导电高分子聚合物与由石墨烯制成的透明导电薄膜31以及电泳显示层33均具有较高的结合强度,从而使电子纸显示屏30在卷曲时不容易损坏。
优选地,缓冲层32满足下述条件的至少其一:体积电阻率≥1*10E-10Ω.cm,玻璃化转化温度Tg≤-40℃,透光率≥94%,成膜后表面能小于60mN/m,其中体积电阻率涉及缓冲层32的导电性能,玻璃化转化温度涉及缓冲层32的挠曲性能,透光率涉及缓冲层32的透光性能,表面能的大小则会影响缓冲层32和透明导电薄膜31的结合强度。较优的情形下,缓冲层32满足该四个条件。
优选地,缓冲层32的厚度5um≤t≤25um。
请参考图6,在一些实施例中,透明导电薄膜31一侧粘附有塑料基材36,该塑料基材36由聚对苯二甲酸乙二醇酯(PET)或聚乙烯(PE)制成,具有很好的可挠性。由此制成的电子纸显示屏30包括塑料基材36、透明导电薄膜31、电泳显示层33和驱动背板35并且由外至内依次层叠连接。
以上所揭露的仅为本发明的较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明申请专利范围所作的等同变化,仍属本发明所涵盖的范围。
Claims (8)
1.一种柔性电子纸触摸显示屏,其特征在于,包括触摸部件和位于触摸部件下方的电子纸显示屏,所述触摸部件包括保护层和触摸层并且由外至内依次层叠,触摸部件的触摸层面板由石墨烯制成,所述电子纸显示屏包括透明导电薄膜、电泳显示层和驱动背板并且由外至内依次层叠,所述透明导电薄膜由石墨烯制成,所述触摸部件作为该柔性电子纸触摸显示屏的输入装置。
2.如权利要求1所述的柔性电子纸触摸显示屏,其特征在于,所述触摸部件与电子纸显示屏之间设有粘接层。
3.如权利要求1所述的柔性电子纸触摸显示屏,其特征在于,所述透明导电薄膜与所述电泳显示层之间夹持有由导电高分子聚合物制成的缓冲层,或者所述透明导电薄膜中添加有导电高分子聚合物。
4.如权利要求3所述的柔性电子纸触摸显示屏,其特征在于,所述导电高分子聚合物是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。
5.如权利要求3所述的柔性电子纸触摸显示屏,其特征在于,所述缓冲层满足下述条件的至少其一:体积电阻率≥1*10E-10Ω.cm,玻璃化转化温度Tg≤-40℃,透光率≥94%,成膜后表面能小于60mN/m。
6.如权利要求3所述的柔性电子纸触摸显示屏,其特征在于,所述缓冲层的厚度5um≤t≤25um。
7.如权利要求1所述的柔性电子纸触摸显示屏,其特征在于,所述触摸部件还包括过渡层,所述过渡层夹持在保护层和触摸层之间。
8.如权利要求7所述的柔性电子纸触摸显示屏,其特征在于,所述过渡层是聚氨酯化合物、丙烯酸化合物、环氧化合物的聚合物或共聚物。
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