CN105116586B - 一种半透反式蓝相液晶显示器及其液晶显示模组 - Google Patents

一种半透反式蓝相液晶显示器及其液晶显示模组 Download PDF

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CN105116586B
CN105116586B CN201510605326.1A CN201510605326A CN105116586B CN 105116586 B CN105116586 B CN 105116586B CN 201510605326 A CN201510605326 A CN 201510605326A CN 105116586 B CN105116586 B CN 105116586B
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liquid crystal
blue phase
phase liquid
crystal display
solid projection
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CN105116586A (zh
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唐岳军
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Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to PCT/CN2015/092356 priority patent/WO2017049686A1/zh
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Abstract

本发明提供了一种半透反式蓝相液晶显示器及其液晶显示模组，半透反式蓝相液晶显示模组包括：上基板、下基板以及蓝相液晶；下基板与上基板相对设置；蓝相液晶设于上基板与下基板之间；其中，下基板上设有多条实心凸起结构，像素电极和公共电极相互间隔的设置在实心凸起结构的上表面，每一实心凸起结构均包括上、下两个部分，实心凸起结构上部分对应为透射区，实心凸起结构下部分在与上部分不重叠的区域对应的下基板位置设置反射层，以形成反射区，像素电极与公共电极之间分别产生平行于实心凸起结构表面的电场驱动蓝相液晶，同时通过设置实心凸起结构上、下两部分的凸起坡度倾角，使反射区和透射区具有一致的光学延迟性。

Description

一种半透反式蓝相液晶显示器及其液晶显示模组
技术领域
本发明涉及液晶显示器的技术领域，具体是涉及一种半透反式蓝相液晶显示器及其液晶显示模组。
背景技术
与目前广泛使用的液晶显示用液晶材料相比，蓝相液晶具有以下四个突出优点：(1)蓝相液晶的响应时间在亚毫秒范围内，并且其无需采用过驱动技术(Over Drive)即可以实现240Hz以上的高速驱动，从而能够有效减少运动图像的动态模糊。在采用红绿蓝三基色发光二极管(RGB-LED)做背光源时，无需彩色滤光膜，利用蓝相液晶即可以实现场序彩色时序显示；(2)蓝相液晶不需要其它各种显示模式所必需的取向层，不但简化了制造工艺，也降低了成本；(3)宏观上，蓝相液晶是光学各向同性的，从而使蓝相液晶显示装置具有视角宽、暗态好的特点；(4)只要蓝相液晶盒盒厚超过电场的穿透深度，液晶盒盒厚的变化对透射率的影响就可以忽略，这种特性尤其适合于制造大屏幕或单板液晶显示装置。
然而现有技术中，蓝相液晶面临着驱动电压过大的问题，目前业界通常采用改进蓝相液晶材料性能或者优化电极结构的方式。但是改进蓝相液晶材料性能的方式例如是制备大克尔常数的蓝相液晶材料，其涉及合成蓝相液晶材料的复杂过程例如制备聚合物稳定蓝相液晶时需要考虑单体、光引发剂、合成条件等一系列因素，因此研发成本十分昂贵。而至于优化电极结构的方式方面则由于其所使用的IPS结构的驱动方式，平行电极所产生的侧向电场的穿透深度有限，需要较高的驱动电压。可见使用IPS驱动方式的蓝相液晶显示技术还有待改进。
目前采用蓝相液晶的液晶显示面板无法采用垂直电场的原因是：液晶显示面板施加电压后，在液晶显示面板的阵列基板上的像素电极和对置基板上的公共电极之间所形成的垂直电场的作用下，蓝相液晶将在垂直方向上被“拉伸”，而偏振光通过该垂直方向拉伸的蓝相液晶后，其并没有相位的改变，偏振光通过蓝相液晶后的偏振状态与蓝相液晶显示面板未施加电压的情况相同，又由于液晶显示面板的上、下偏光片的吸收轴相互垂直，背光源发出的光线无法通过液晶显示面板，从而无法得到液晶显示面板的亮态，不能仅通过这样的垂直电场来实现蓝相液晶显示面板的各灰阶的显示。
由于液晶显示器不是主动发光器件，需要背光源才能实现显示效果，所以液晶显示器的主要模式为透射模式，在室内有良好的可读性，但是在有强烈阳光或者灯光情况下，由于液晶显示器表面的反射光，造成可读性较低。通常有两种方法来增加室外可读性：(1)提高背光源的亮度；(2)采用透反模式液晶显示器。若采用第一种方法，明显的增加了电能消耗，所以通常采用第二种方法。
发明内容
本发明实施例提供一种半透反式蓝相液晶显示器及其液晶显示模组，以解决现有技术中的蓝相液晶显示器驱动电压过大以及透射区和反射区光学一致性差的技术问题。
为解决上述问题，本发明实施例提供了一种半透反式蓝相液晶显示模组，所述半透反式蓝相液晶显示模组包括：上基板、下基板以及蓝相液晶；所述下基板与所述上基板相对设置；所述蓝相液晶设于所述上基板与所述下基板之间；其中，所述下基板上设有多条实心凸起结构，像素电极和公共电极相互间隔的设置在所述实心凸起结构的上表面，每一所述实心凸起结构均包括上、下两个部分，所述实心凸起结构上部分对应为透射区，所述实心凸起结构下部分在与所述上部分不重叠的区域对应的下基板位置设置反射层，以形成反射区；所述像素电极与所述公共电极之间分别产生平行于所述实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置所述实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光学延迟性。
根据本发明一优选实施例，所述上部分的凸起坡度倾角小于下部分的凸起坡度倾角。
根据本发明一优选实施例，所述上部分的凸起坡度倾角和所述下部分的凸起坡度倾角范围分别在25-75度之间。
根据本发明一优选实施例，所述上部分的凸起坡度倾角小于45度，所述下部分的凸起坡度倾角大于45度。
根据本发明一优选实施例，所述透射区的相位延迟为所述反射区的相位延迟的2倍。
根据本发明一优选实施例，所述半透反式蓝相液晶显示模组还包括夹设于所述上、下基板内的辅助隔垫物，其中，位于所述实心凸起结构顶部位置的像素电极或者公共电极与所述上基板的间距为D1，所述辅助隔垫物与所述上基板或所述下基板之间间距为D2，其中，D1大于等于D2。
根据本发明一优选实施例一种半透反式蓝相液晶显示器，所述半透反式蓝相液晶显示器包括半透反式蓝相液晶显示模组，所述半透反式蓝相液晶显示模组进一步包括：上基板、下基板以及蓝相液晶；所述下基板与所述上基板相对设置；所述蓝相液晶设于所述上基板与所述下基板之间；其中，所述下基板上设有多条实心凸起结构，像素电极和公共电极相互间隔的设置在所述实心凸起结构的上表面，每一所述实心凸起结构均包括上、下两个部分，所述实心凸起结构上部分对应为透射区，所述实心凸起结构下部分在与所述上部分不重叠的区域对应的下基板位置设置反射层，以形成反射区；所述像素电极与所述公共电极之间分别产生平行于所述实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置所述实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光学延迟性。
根据本发明一优选实施例，所述上部分的凸起坡度倾角小于下部分的凸起坡度倾角，所述上部分的凸起坡度倾角和所述下部分的凸起坡度倾角范围分别在25-75度之间。
根据本发明一优选实施例，所述上部分的凸起坡度倾角小于45度，所述下部分的凸起坡度倾角大于45度，所述透射区的相位延迟为所述反射区的相位延迟的2倍。
根据本发明一优选实施例，所述半透反式蓝相液晶显示模组还包括夹设于所述上、下基板内的辅助隔垫物，其中，位于所述实心凸起结构顶部位置的像素电极或者公共电极与所述上基板的间距为D1，所述辅助隔垫物与所述上基板或所述下基板之间间距为D2，其中，D1大于等于D2。
相对于现有技术，本发明提供的半透反式蓝相液晶显示器及其液晶显示模组，通过在下基板上设置实心凸起结构，像素电极和公共电极相互间隔的设置在实心凸起结构的上表面，且每一实心凸起结构均包括上、下两个部分，使上部分的凸起坡度倾角小于下部分的凸起坡度倾角，在实心凸起结构下部分对应的下基板位置设置反射层以形成反射区，实心凸起结构上部分对应形成透射区，像素电极与公共电极之间分别产生平行于实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光学延迟性。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明半透反式蓝相液晶显示模组一优选实施例的剖面结构示意图；
图2是图1实施例中半透反式蓝相液晶显示模组在通电状态下的剖面结构示意图；
图3是本发明半透反式蓝相液晶显示器一优选实施例的结构示意简图。
具体实施方式
下面结合附图和实施例，对本发明作进一步的详细描述。特别指出的是，以下实施例仅用于说明本发明，但不对本发明的范围进行限定。同样的，以下实施例仅为本发明的部分实施例而非全部实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1，图1为本发明半透反式蓝相液晶显示模组一优选实施例的剖面结构示意图。该半透反式蓝相液晶显示模组包括但不限于以下元件：上基板100、下基板200、蓝相液晶300、公共电极400、像素电极500以及辅助隔垫物600。
具体而言，下基板200与上基板100相对设置，下基板200设有多条实心凸起结构700，多条实心凸起结构700组成的断面相对上基板100和下基板200呈交替起伏的凸起和凹陷形式，蓝相液晶300填充于实心凸起结构700与上基板100组成的空间内。其中，实心凸起结构700可以为透明光刻胶层。
像素电极500和公共电极400相互间隔的设置在实心凸起结构700的上表面，每一实心凸起结构700的上表面都分别设有多条像素电极500和公共电极400。当然，像素电极500和公共电极400的设置数量并不限于本实施例图示中的情况。
每一实心凸起结构700均包括上、下两个部分，图1中虚线X以上的部分定义为实心凸起结构700的上部分，虚线X以下的部分定义为实心凸起结构700的下部分，在该实施例中，上部分呈三角形结构，而下部分呈梯形结构，当然，在其他实施例中，并不限于此。上部分的凸起坡度倾角a小于下部分的凸起坡度倾角b，上部分的凸起坡度倾角a和下部分的凸起坡度倾角b范围可以分别在25-75度之间。进一步优选地，上部分的凸起坡度倾角a小于45度，下部分的凸起坡度倾角b大于45度。
下基板200局部设置反射层201，将下基板200分为透射区和反射区，优选地，反射层201设置在实心凸起结构700下部分在与上部分不重叠的区域对应的下基板位置处，进而形成反射区，图中虚线框所示的区域为反射区，而实心凸起结构700上部分对应形成透射区。
虽然本实施例中在凸起结构上采用了IPS(In-Plane Switching，平面转换)电极，但是IPS电极结构的目的是让各向同性的蓝相液晶在电场下形成倾斜的光学各向异性，同时采用了IPS和VA(Vertical Alignment，垂直配向型)模式工作原理进行显示，以达到控制蓝相液晶显示器亮暗态的目的。这种凸起上的斜向IPS电极相对于水平面上的IPS电极，增加了相同水平宽度上的IPS电极密度或数量，增加了电场密度，同时采用了IPS和VA模式，从而能够降低蓝相液晶的驱动电压。
请参阅图2，图2是图1实施例中半透反式蓝相液晶显示模组在通电状态下的剖面结构示意图。像素电极500与公共电极400之间分别产生平行于实心凸起结构700表面的电场驱动蓝相液晶300。图2中的小的虚线箭头表示电场分布形式，当像素电极500和公共电极400通电时，像素电极500和公共电极400之间的蓝相液晶300形成如图2中所示的排列形式，这些斜向电场同时驱动蓝相液晶300。
为了平衡透射区与反射区之间的相位延迟，实现透反蓝相液晶显示器的透射区和反射区的电光特性曲线相匹配，透射区和反射区采用相同的液晶层厚度；但是透射区和反射区的电极之间形成不同的电场倾角。图2中实线箭头表示光的传播路径。光透过透射区所需要穿过的距离相当于光线从进入反射区到反射出反射区的距离的一半。具体通过设置实心凸起结构700上、下两部分的凸起坡度倾角(a和b)的不同，使得反射区较透射区产生一个较小的水平电场分量，即蓝相液晶形成的光学各向异性的水平分量是透射区大于反射区，调整角度a/b关系，从而使环境光线两次通过液晶层与一次通过液晶层累积的相位延迟相同，即，使透射区的相位延迟为反射区的相位延迟的2倍，进而得到反射区和透射区具有一致的光电特性。
具体而言，光通过透射区的时候，光线的路径为显示模组的厚度，而光线在反射区则是要经过一次反射，所经过的路径为两个显示模组的厚度的距离，因此，光透过透射区所需要穿过的距离相当于光线从进入反射区到反射出反射区的距离的一半。
同时为了让反射区和透射区具有更一致的光电特性，可以制造多个凸起坡度倾角角度(a和b)不同的测试面板，譬如，可以将实心凸起结构700上部分的角度a设置为30度，而将实心凸起结构700下部分的角度b设置为50度，通过调整实心凸起结构700上、下两部分的倾角，使环境光线两次通过液晶层与一次通过液晶层累积的相位延迟相同，即：使透射区域的相位延迟量大致为反射区的相位延迟量的2倍(因为通过前面的描述可知，光透过透射区所需要穿过的距离相当于光线从进入反射区到反射出反射区的距离的一半)。当然，此处仅给出一种角度关系的例子，在根据本发明的思路指导下，本领域技术人员可以自行调整实心凸起结构700上、下两部分的倾角，以满足相位延时的条件。
并且，这些测试面板中均填充一种蓝相液晶。绘制这几个测试面板的透射区域和反射区域的V-T(电压-透过率)曲线特性，具体测试方法为：在只有背光提供光源、无环境光的条件下测得的透过区V－T曲线；在关闭背光源、只有强环境光的条件下测得反射区V－T曲线；若一测试面板的透射区域和反射区域的曲线特性在误差范围内一致，则说明光线经过透射区域的相位延迟量大致为反射区的相位延迟量的2倍，那么该测试面板的比例关系就可以作为实际生产中的参考值，这样可以保证透射区和反射区具有一致的光学延迟性。
请继续参阅图1，隔垫物600夹设于上、下基板内，其中设于实心凸起结构700顶部位置处的像素电极500或公共电极400与上基板100的间距为D1，辅助隔垫物600(sub PS)与下基板200的间距为D2，D1大于等于D2，这样半透反式蓝相液晶显示模组即便受到外界按压时，由于有辅助隔垫物600顶上基板100，从而保护了位于实心凸起结构700顶部位置处的像素电极500或公共电极400，使得像素电极500和公共电极400不被破坏。另外，间距D2还可以为辅助隔垫物600与上基板100之间的间距，同样的，需要满足D1大于等于D2的条件。
本发明实施例提供的半透反式蓝相液晶显示模组，通过在下基板上设置实心凸起结构，像素电极和公共电极相互间隔的设置在实心凸起结构的上表面，且每一实心凸起结构均包括上、下两个部分，使上部分的凸起坡度倾角小于下部分的凸起坡度倾角，在实心凸起结构下部分对应的下基板位置设置反射层以形成反射区，实心凸起结构上部分对应形成透射区，像素电极与公共电极之间分别产生平行于实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光电特性。
另外，本发明实施例还提供一种半透反式蓝相液晶显示器，请参阅图3，图3是本发明半透反式蓝相液晶显示器一优选实施例的结构示意简图。该半透反式蓝相液晶显示器可以包括：壳体999以及设于壳体999内部的半透反式蓝相液晶显示模组888等。
半透反式蓝相液晶显示模组888如图1和图2所示，其技术特征与前述实施例完全相同，在此不再赘述。而关于半透反式蓝相液晶显示器其他部分结构的技术特征，在本领域技术人员的理解范围内，此处不再赘述。
本发明实施例提供的半透反式蓝相液晶显示器，通过在显示模组的的下基板上设置实心凸起结构，像素电极和公共电极相互间隔的设置在实心凸起结构的上表面，且每一实心凸起结构均包括上、下两个部分，使上部分的凸起坡度倾角小于下部分的凸起坡度倾角，在实心凸起结构下部分对应的下基板位置设置反射层以形成反射区，实心凸起结构上部分对应形成透射区，像素电极与公共电极之间分别产生平行于实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光电特性。
以上所述仅为本发明的部分实施例，并非因此限制本发明的保护范围，凡是利用本发明说明书及附图内容所作的等效装置或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

1.一种半透反式蓝相液晶显示模组，其特征在于，所述半透反式蓝相液晶显示模组包括：
上基板；
下基板，与所述上基板相对设置；
蓝相液晶，设于所述上基板与所述下基板之间；
其中，所述下基板上设有多条实心凸起结构，像素电极和公共电极相互间隔的设置在所述实心凸起结构的上表面，每一所述实心凸起结构均包括上、下两个部分，所述实心凸起结构上部分对应为透射区，所述实心凸起结构下部分在与所述上部分不重叠的区域对应的下基板位置设置反射层，以形成反射区；
所述像素电极与所述公共电极之间分别产生平行于所述实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置所述实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光学延迟性。
2.根据权利要求1所述的半透反式蓝相液晶显示模组，其特征在于，所述上部分的凸起坡度倾角小于下部分的凸起坡度倾角。
3.根据权利要求2所述的半透反式蓝相液晶显示模组，其特征在于，所述上部分的凸起坡度倾角和所述下部分的凸起坡度倾角范围分别在25-75度之间。
4.根据权利要求3所述的半透反式蓝相液晶显示模组，其特征在于，所述上部分的凸起坡度倾角小于45度，所述下部分的凸起坡度倾角大于45度。
5.根据权利要求1所述的半透反式蓝相液晶显示模组，其特征在于，所述透射区的相位延迟为所述反射区的相位延迟的2倍。
6.根据权利要求1所述的半透反式蓝相液晶显示模组，其特征在于，所述半透反式蓝相液晶显示模组还包括夹设于所述上、下基板内的辅助隔垫物，其中，位于所述实心凸起结构顶部位置的像素电极或者公共电极与所述上基板的间距为D1，所述辅助隔垫物与所述上基板或所述下基板之间间距为D2，其中，D1大于等于D2。
7.一种半透反式蓝相液晶显示器，其特征在于，所述半透反式蓝相液晶显示器包括半透反式蓝相液晶显示模组，所述半透反式蓝相液晶显示模组进一步包括：
上基板；
下基板，与所述上基板相对设置；
蓝相液晶，设于所述上基板与所述下基板之间；
其中，所述下基板上设有多条实心凸起结构，像素电极和公共电极相互间隔的设置在所述实心凸起结构的上表面，每一所述实心凸起结构均包括上、下两个部分，所述实心凸起结构上部分对应为透射区，所述实心凸起结构下部分在与所述上部分不重叠的区域对应的下基板位置设置反射层，以形成反射区；所述像素电极与所述公共电极之间分别产生平行于所述实心凸起结构表面的电场驱动所述蓝相液晶，同时通过设置所述实心凸起结构上、下两部分的凸起坡度倾角，使所述反射区和所述透射区具有一致的光学延迟性。
8.根据权利要求7所述的半透反式蓝相液晶显示器，其特征在于，所述上部分的凸起坡度倾角小于下部分的凸起坡度倾角，所述上部分的凸起坡度倾角和所述下部分的凸起坡度倾角范围分别在25-75度之间。
9.根据权利要求8所述的半透反式蓝相液晶显示器，其特征在于，所述上部分的凸起坡度倾角小于45度，所述下部分的凸起坡度倾角大于45度，所述透射区的相位延迟为所述反射区的相位延迟的2倍。
10.根据权利要求7所述的半透反式蓝相液晶显示器，其特征在于，所述半透反式蓝相液晶显示模组还包括夹设于所述上、下基板内的辅助隔垫物，其中，位于所述实心凸起结构顶部位置的像素电极或者公共电极与所述上基板的间距为D1，所述辅助隔垫物与所述上基板或所述下基板之间间距为D2，其中，D1大于等于D2。
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