CN105676517A - 一种量子点膜及显示装置 - Google Patents

一种量子点膜及显示装置 Download PDF

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CN105676517A
CN105676517A CN201610169476.7A CN201610169476A CN105676517A CN 105676517 A CN105676517 A CN 105676517A CN 201610169476 A CN201610169476 A CN 201610169476A CN 105676517 A CN105676517 A CN 105676517A
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quantum dot
film
display device
ultraviolet
dot film
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徐元杰
黄炜赟
王杨
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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Priority to CN201610169476.7A priority Critical patent/CN105676517A/zh
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Priority to US15/533,098 priority patent/US10203527B2/en
Priority to PCT/CN2016/086675 priority patent/WO2017161714A1/zh
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Abstract

本发明涉及一种量子点膜及显示装置，用以解决现有技术中存在的触摸显示屏的量子点膜不具备杀菌作用的问题。该量子点膜包括：基质，以及若干分散于所述基质中、且能够发射C波段的紫外线UVC的紫外量子点。本发明在量子点膜中增加能够发射UVC的紫外量子点，由于UVC的波长200-270nm处于杀菌效果最强、且对人体无害的不可见光的波长范围，因而，可在保证显示质量和人体健康的前提下，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜位于显示屏内部，其杀菌效果和功能不会随使用时间增加而降低。

Description

一种量子点膜及显示装置
技术领域
本发明涉及显示装置领域，尤其涉及一种量子点膜及显示装置。
背景技术
目前触摸显示屏广泛应用于移动通讯、平板电脑、相机、卫星导航、医疗设备及其他显示领域。但同时也存在一些问题，触摸显示屏使用频率很高，极易成为病毒、细菌等微生物传播的媒介物，在许多公共场所和对细菌、病毒要求严格的医疗卫生场所，这一问题尤其突出。因此，如何确保触摸显示屏幕的清洁卫生，成为一项不可忽视的课题。
量子点又可以称纳米晶，是一种由II-VI族或III-V族元素组成的纳米颗粒。量子点的粒径一般介于1-20nm之间，由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激后可以发射荧光。现有技术已经将量子点应用到显示屏的制作中，不管是背光模组还是彩膜滤光片中使用的量子点膜，其主要原理都是利用量子点发射红绿蓝RGB三色光，但该量子点膜却并不具备杀菌作用。
综上所述，目前现有中触摸显示屏的量子点膜不具备杀菌作用，而触摸显示屏由于使用频率很高，极易成为病毒、细菌等微生物传播的媒介物，因此，如何确保触摸显示屏幕的清洁卫生，成为一项不可忽视的课题。
发明内容
本发明实施例提供的一种量子点膜及显示装置，用以解决现有技术中存在的触摸显示屏的量子点膜不具备杀菌作用的问题。
本发明实施例提供的一种量子点膜，包括：基质，以及若干分散于所述基质中、且能够发射C波段的紫外线UVC的紫外量子点。
本发明在量子点膜中增加能够发射C波段的紫外线UVC的紫外量子点，由于UVC的波长200-270nm处于杀菌效果最强、且对人体无害的不可见光的波长范围，因而，可在保证显示质量和人体健康的前提下，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜位于显示屏内部，其杀菌效果和功能不会随使用时间增加而降低。
较佳的，所述量子点膜还包括：
若干分散于所述基质中、且能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点。
较佳的，所述R量子点、所述G量子点和所述B量子点均匀的分层排列。
较佳的，所述紫外量子点分布在所述量子点膜的任意位置，或所述紫外量子点为一整层均匀排列的结构。
较佳的，所述R量子点、所述G量子点和所述B量子点在所述基质中所占的区域互不重合，且相邻区域之间通过黑矩阵隔开。
较佳的，所述紫外量子点分布在全部或部分所述所占的区域中。
本发明实施例提供的一种显示装置，包括如本发明实施例提供的上述量子点膜。
较佳的，所述量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，所述量子点膜作为彩膜或背光模组。
较佳的，所述显示装置还包括：抗菌膜。
较佳的，所述抗菌膜位于所述显示装置的最外膜层。
较佳的，所述抗菌膜位于所述显示装置内部，且在显示装置的内部还设置有将所述抗菌膜与其它膜层绝缘的绝缘层。
较佳的，所述抗菌膜的厚度为50-500nm。
较佳的，所述显示装置发射的UVC的能量占发射的白光的能量的比例，比日光中UVC的能量所占比例高2％-4％。
附图说明
图1为本发明实施例提供的一种量子点膜的结构示意图；
图2为本发明实施例提供的一种包含RGB量子点和紫外量子点的量子点膜的结构示意图；
图3为本发明实施例提供的另一种包含RGB量子点和紫外量子点的量子点膜的结构示意图。
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，所描述的实施例仅是本发明一部分实施例，并不是全部的实施例。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。
现有技术已经将量子点应用到显示屏的制作中，不管是背光模组还是彩膜滤光片中使用的量子点膜，其主要原理都是利用量子点发射红绿蓝RGB三色光，但该量子点膜却并不具备杀菌作用。为了解决这一问题，本发明实施例提供了一种能够发射UVC的量子点膜，该方法可以用在能够激发量子点膜发射UVC的任何情况，包括现有的OLED屏幕、液晶屏幕、量子点屏幕等。
如图1所示，为本发明实施例提供的一种量子点膜的结构示意图，该量子点膜包括：基质101，以及若干分散于基质101中、且能够发射C波段的紫外线UVC的紫外量子点102。
紫外线的杀菌原理是通过紫外线的照射，破坏及改变微生物的DNA(脱氧核糖核酸)结构，使细菌当即死亡或不能繁殖后代，达到杀菌的目的，一般经UVC照射1-2秒就可以达到灭菌效果。紫外光被划分为A射线、B射线和C射线(UVA、UVB和UVC)，波长范围分别为400-315nm，315-280nm，280-190nm。其中，UVA和UVB对人体有害，消毒使用的紫外线是C波紫外线，对人体无害，且可以消灭细菌、病毒、霉菌、单细胞藻等微生物。UVC的波长范围是200-275nm，处于不可见光(波长＜380nm)范围，因而，由于本发明在量子点膜中增加能够发射UVC的紫外量子点，可在保证显示质量和人体健康的前提下，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜一般位于显示屏内部，其杀菌的效果和功能较稳定，不会随使用时间增加而降低。
现有技术中的量子点膜，主要包括能够发射红绿蓝RGB三色光的量子点，本发明中的量子点膜，除了包括紫外量子点外，还可以与现有技术中发射红绿蓝RGB三色光的量子点相结合。如图2所示，为本发明实施例提供的一种包含RGB量子点和紫外量子点的量子点膜的结构示意图，较佳的，量子点膜还包括：若干分散于基质101中、且能够分别发射红绿蓝三色光的R量子点201、G量子点202和B量子点203。图2中的黑色小球为紫外量子点，图2只是表示一种可能的紫外量子点102与R量子点201、G量子点202和B量子点203的分布位置关系图，但并不代表只有这一种排列形式。下面介绍两种可能的紫外量子点102与R量子点201、G量子点202和B量子点203的分布位置关系。
第一种，R、G、B三种量子点分层排列。
较佳的，R量子点201、G量子点202和B量子点203均匀的分层排列。如图2所示，图中R量子点201、G量子点202和B量子点203分别为均匀的一层，且G量子点层位于R量子点层和B量子点层之间。
而本发明实施例中提供的紫外量子点102，其具体的排列位置可以不做限定。较佳的，紫外量子点102分布在量子点膜的任意位置，或紫外量子点102为一整层均匀排列的结构。在具体实施时，紫外量子点102可以任意分布在量子点膜中，比如位于R量子点层、G量子点层或B量子点层中的任意一层中，或位于层与层之间。又或者，可以如图2所示，紫外量子点102也呈一整层均匀排列。
第二种，R、G、B三种量子点分不同的区域排列。
如图3所示，为本发明实施例提供的另一种包含RGB量子点和紫外量子点的量子点膜的结构示意图。较佳的，R量子点201、G量子点202和B量子点203在基质101中所占的区域互不重合，且相邻区域之间通过黑矩阵204隔开。图3中，R量子点201、G量子点202和B量子点203分别分布在基质101中不同的区域，且每种量子点所占的区域互不重合。图中黑色的矩形表示黑矩阵204，用于隔开相邻的区域。
而本发明实施例中提供的紫外量子点102，其具体的排列位置可以不做限定。较佳的，紫外量子点102分布在全部或部分所占的区域中。在具体实施时，紫外量子点102可以分布在每个所占的区域中，也可分布在部分区域中，可以根据需要进行设定。
上述两种R、G、B三种量子点的排列方式，只是两种较佳的方案，并不用于限定本发明，具体的其它排列方式，可以参见现有技术中量子点膜中包含的R、G、B三种量子点的排列方式。
在具体实施时，本发明实施例提供的紫外量子点102需要让量子点发UVC，及需要用到吸收峰为其他光线、荧光发射峰在UVC波段的量子点材料。而具体的制作紫外量子点的材料或者是量子点的制作方法和尺寸等，可以参见现有技术中使量子点发射紫外光的方案，在此不做过多阐述。
紫外量子点102具体的排列位置可以根据需要进行设定，并不仅限于上述提供的排列方式。例如，紫外量子点102可以是在量子点膜中均匀排列，也可以仅设置在显示装置的四周或是显示装置的四个边角处。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述量子点膜，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本发明的限制。该显示装置的实施可以参见上述量子点膜的实施例，重复之处不再赘述。
较佳的，该显示装置中包含的量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，量子点膜作为彩膜或背光模组。
在具体实施时，包含能够发射红绿蓝三色光的R量子点、G量子点和B量子点的量子点膜，通常可以通过不同的排列方式等实现用量子点膜代替显示装置中的彩膜或背光模组。本发明实施例中提供的量子点膜，可以在R量子点、G量子点和B量子点中设置能够发射UVC的紫外量子点，从而达到在保证显示质量和人体健康的前提下，在屏幕显示时，为显示屏杀菌的作用。因而，本发明实施例中提供的量子点膜也可以作为显示装置中彩膜或背光模组。
也就是说，本发明实施例中提供的包含紫外量子点、R量子点、G量子点和B量子点的量子点膜，其具体的设置位置，可以参见现有技术中量子点膜的设置。例如，可以应用在背光模组、阵列基板或者彩膜基板上，都可以实现量子点的发光显示。而具体实现紫外量子点发光的方式，也可以参见现有技术中量子点发射紫外光或者其它单色光的方式。
为了解决触摸显示屏幕易脏和细菌病毒携带的问题，本发明通过在显示装置的量子点膜中增加了特定波长UVC的紫外量子点，达到通过UVC杀菌的功能，而为了使杀菌作用更强，可以结合现有技术中的抗菌膜同时使用，实现显示面板的自清洁和抗菌功能。较佳的，显示装置还包括：抗菌膜。而本发明实施例提供的抗菌膜的材料、尺寸和制作方法等，可以参见现有技术中的抗菌膜，只要是本身具有杀菌功能，且在UVC照射下能够增强杀菌能力的抗菌膜均可，在此不做过多限定。
本发明实施例提供的抗菌膜的具***置，也可以不进行限定，可以位于显示装置中的任何位置。由于触摸显示屏做外膜层与人手直接接触，较佳的，抗菌膜位于显示装置的最外膜层。抗菌膜还可设置在显示装置(如手机)的外壳正反背面或侧面，用于手机表面的杀菌和洁净。
同时，上述抗菌膜也可设置在显示装置内部，用于保持显示装置内部的清洁，有利于显示装置内部电路、元器件的保护，但此时，为了不影响其它膜层的正常工作，可以在抗菌膜的上下表面设置两层绝缘层。较佳的，抗菌膜位于显示装置内部，且在显示装置的内部还设置有将抗菌膜与其它膜层绝缘的绝缘层。
在具体实施时，为了不增加显示装置的厚度，又能有效的发挥抗菌膜的作用。较佳的，抗菌膜的厚度为50-500nm。
为了使显示装置发射的UVC起到很好的杀菌效果，但又不至于影响显示装置的正常显示或是对人体造成伤害，可以适当加大显示装置发射的UVC的量。较佳的，显示装置发射的UVC的能量占发射的白光的能量的比例，比日光中UVC的能量所占比例高2％-4％。
综上所述，本发明在量子点膜中增加能够发射C波段的紫外线UVC的紫外量子点，由于UVC的波长200-270nm处于杀菌效果最强、且对人体无害的不可见光的波长范围，因而，可在保证显示质量和人体健康的前提下，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜位于显示屏内部，其杀菌效果和功能不会随使用时间增加而降低。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (13)

1.一种量子点膜，其特征在于，包括：基质，以及若干分散于所述基质中、且能够发射C波段的紫外线UVC的紫外量子点。
2.如权利要求1所述的量子点膜，其特征在于，所述量子点膜还包括：
若干分散于所述基质中、且能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点。
3.如权利要求2所述的量子点膜，其特征在于，所述R量子点、所述G量子点和所述B量子点均匀的分层排列。
4.如权利要求3所述的量子点膜，其特征在于，所述紫外量子点分布在所述量子点膜的任意位置，或所述紫外量子点为一整层均匀排列的结构。
5.如权利要求2所述的量子点膜，其特征在于，所述R量子点、所述G量子点和所述B量子点在所述基质中所占的区域互不重合，且相邻区域之间通过黑矩阵隔开。
6.如权利要求5所述的量子点膜，其特征在于，所述紫外量子点分布在全部或部分所述所占的区域中。
7.一种显示装置，其特征在于，包括如权利要求1-6任一项所述量子点膜。
8.如权利要求7所述的显示装置，其特征在于，所述量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，所述量子点膜作为彩膜或背光模组。
9.如权利要求7所述的显示装置，其特征在于，所述显示装置还包括：抗菌膜。
10.如权利要求9所述的显示装置，其特征在于，所述抗菌膜位于所述显示装置的最外膜层。
11.如权利要求9所述的显示装置，其特征在于，所述抗菌膜位于所述显示装置内部，且在显示装置的内部还设置有将所述抗菌膜与其它膜层绝缘的绝缘层。
12.如权利要求9-11任一项所述的显示装置，其特征在于，所述抗菌膜的厚度为50-500nm。
13.如权利要求7-11任一项所述的显示装置，其特征在于，所述显示装置发射的UVC的能量占发射的白光的能量的比例，比日光中UVC的能量所占比例高2％-4％。
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Application publication date: 20160615