CN104821294A - 一种柔性显示装置及其制作方法 - Google Patents

一种柔性显示装置及其制作方法 Download PDF

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CN104821294A
CN104821294A CN201510196706.4A CN201510196706A CN104821294A CN 104821294 A CN104821294 A CN 104821294A CN 201510196706 A CN201510196706 A CN 201510196706A CN 104821294 A CN104821294 A CN 104821294A
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谢春燕
谢明哲
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BOE Technology Group Co Ltd
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Abstract

本发明提供一种柔性显示装置及其制作方法，涉及显示器的制作领域。制作方法包括：提供一刚性载板；在刚性载板上形成一保护图案；在形成有保护图案的刚性载板上，形成包括有保留区域以及非保留区域的柔性衬底基板，柔性衬底基板覆盖所述保护图案；在柔性衬底基板的保留区域上，制作柔性显示装置的显示器件；对柔性衬底基板进行切割，以将柔性衬底基板的保留区域与非保留区域分离；其中，切割的轨迹落入保护图案所在区域；将切割后的柔性衬底基板与刚性载板剥离。本发明的方案在刚性载板对应的切割轨迹上设置了保护图案，通过该保护图案防止切割对刚性载板造成损伤，从而避免刚性载板破裂后影响后续柔性显示装置的制作。

Description

一种柔性显示装置及其制作方法
技术领域
本发明涉及显示器的制作领域，特别是一种柔性显示装置及其制作方法。
背景技术
现有的柔性显示器件的制备方法通常是在玻璃载板上涂布柔性衬底，以形成柔性基板，然后在柔性基板在制备TFT和发光元件等。在完成显示器件制作之后，通常是利用激光将柔性器件(柔性基板、TFT以及发光元件)与玻璃载板分离，但是由于在柔性基板涂布的起始和结束地方会有不均匀现象发生，也就是柔性基板边缘处的性质会与中心区域有所不同，所以在利用激光分离的过程中，要将整片玻璃与柔性器件分离会很困难，甚至对柔性器件造成损害。最简单的解决办法是在激光剥离前，将柔性基板边缘不均匀部分利用激光切割掉。但在切割过程中，只能切割柔性部分，不能对下层的玻璃产生损伤，因为玻璃一旦有损伤，在后续工艺中就可能有裂片、碎片的风险，影响整体的工艺良率。
发明内容
本发明要解决的技术问题是提供一种柔性显示装置及其制作方法，能够防切割对载板造成损伤。
为解决上述技术问题，本发明的实施例提供一种柔性显示装置的制作方法，包括：
提供一刚性载板；
在所述刚性载板上形成一保护图案；
在形成有所述保护图案的刚性载板上，形成包括有保留区域以及非保留区域的柔性衬底基板，所述柔性衬底基板覆盖所述保护图案；
在所述柔性衬底基板的保留区域上，制作所述柔性显示装置的显示器件；
对所述柔性衬底基板进行切割，以将所述柔性衬底基板的保留区域与非保留区域分离；其中，切割的轨迹落入所述保护图案所在区域；
将切割后的柔性衬底基板与所述刚性载板剥离。
其中，具体对所述柔性衬底基板进行激光切割；所述保护图案采用激光吸收率大于第一阈值，和/或激光反射率大于第二阈值的材料。
其中，所述保护图案由两层组成；其中一层的激光吸收率大于第一阈值，另一层的光反射率大于第二阈值。
其中，所述保护图案的材料为金属材料。
其中，所述金属材料由银、铝和钼中的一种或多种组成。
其中，所述保护图案的厚度为1000埃-2000埃。
其中，所述刚性载板为玻璃载板。
此外，本发明提供一种柔性显示装置，该柔性显示装置由上述制作方法得到。
本发明的上述技术方案的有益效果如下：
本发明的方案在刚性载板对应的切割轨迹上设置了保护图案，通过该保护图案防止切割对刚性载板造成损伤，从而避免刚性载板破裂后影响后续柔性显示装置的制作，进而提高了工艺良率。
附图说明
图1为本发明的制作方法的步骤示意图；
图2A-图2E为本发明的制作方法的详细流程示意图。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
为解决上述现有技术问题，本发明的实施例提供一种柔性显示装置的制作方法，如图1所示，包括：
步骤11，提供一刚性载板(如玻璃载板)；
步骤12，在刚性载板上形成一保护图案；在本步骤中，可在玻璃基板上沉积保护图案的材料层，通过构图工艺形成出对应切割轨迹的保护图案；或者，将保护图案印在刚性载板上；
步骤13，在形成有保护图案的刚性载板上，形成包括有保留区域以及非保留区域的柔性衬底基板，所述柔性衬底基板覆盖所述保护图案；
步骤14，在柔性衬底基板的保留区域上，制作柔性显示装置的显示器件；
步骤15，对柔性衬底基板进行切割，以将柔性衬底基板的保留区域与非保留区域分离；其中，切割的轨迹落入保护图案所在区域；
步骤16，将切割后的柔性衬底基板与所述刚性载板剥离。
本实施例的制作方法在刚性载板对应的切割轨迹上设置了保护图案，通过该保护图案避免切割对刚性载板造成损伤，避免刚性载板破裂后影响后续柔性显示装置的制作，进而提高了工艺良率。
具体地，在上述步骤15中，可使用激光对柔性衬底基板进行切割，对应地，保护图案应吸收和/或反射掉激光的能量，保护即采用激光吸收率大于第一阈值，和/或激光反射率大于第二阈值的材料。这里第一阈值和第二阈值可根据实际的激光切割能量计算得到。
当然，为能够更好地过滤掉激光的所能量，作为优选方案，本实施例的保护图案可分为两层，一层采用吸收激光能量的材料，另一层采用反射激光的材料；或者本实施例的保护图案采用两者的复合材料进行制作，即保护图案同时具有可满足要求的激光吸收率和激光反射率。
在实际应用中，可以选用常见的金属材料作为保护图案，如银Ag、铝Al和钼Mo等。其中，金属保护图案的厚度优选为1000埃-2000埃，在大于1000A埃后，银制保护图案的反射率基本可达100％，而铝、钼反射率也都在90％以上。由于Ag、Al和Mo等金属保护图案可反射绝大部分的激光能量，因此完全能够承受住激光切割。
下面对本实施例的制作方法的流程进行详细介绍。
本实施例的制作方法的流程包括：
步骤21：如图2A所示，在玻璃载板1上形成保护图案2；
步骤22：如图2B所示，在形成由保护图案2的玻璃载板1上，形成覆盖保护图案2的柔性衬底基板3；
步骤23：如图2C所示，在柔性衬底基板3上制作显示器件；其中，柔性衬底基板3包括保留区域A以及不保留区域(即柔性衬底基板3除保留区域A的部分)，显示器件应形成保留区域A中；
步骤24：如图2D所示，对柔性衬底基板3的边缘进行切割，分离保留部分31以及不保留部分32；
步骤25：如图2E所示，将柔性衬底基板从玻璃载板上剥离，得到由柔性衬底基板的保留部分31以及已经制作好显示器件4组成柔性显示装置(图2E所示并不代表最终柔性显示装置形状)。
综上所述，本实施例的制作方法能够避免刚性载板在切割过程中出现损伤，从而在一定程度上即延长了刚性载板的使用寿命，且提高了柔性显示器的良品率，在一定程度上来讲，降低了制作成本。
此外本发明的实施例还提供一种由上述制作方法得到的柔性显示装置，所述柔性显示装置可以是显示屏能够进行弯曲的设备。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (8)

1.一种柔性显示装置的制作方法，其特征在于，包括：
提供一刚性载板；
在所述刚性载板上形成一保护图案；
在形成有所述保护图案的刚性载板上，形成包括有保留区域以及非保留区域的柔性衬底基板，所述柔性衬底基板覆盖所述保护图案；
在所述柔性衬底基板的保留区域上，制作所述柔性显示装置的显示器件；
对所述柔性衬底基板进行切割，以将所述柔性衬底基板的保留区域与非保留区域分离；其中，切割的轨迹落入所述保护图案所在区域；
将切割后的柔性衬底基板与所述刚性载板剥离。
2.根据权利要求1所述的制作方法，其特征在于，
对所述柔性衬底基板进行激光切割；
所述保护图案采用激光吸收率大于第一阈值，和/或激光反射率大于第二阈值的材料。
3.根据权利要求2所述的制作方法，其特征在于，
所述保护图案由两层组成；其中一层的激光吸收率大于第一阈值，另一层的光反射率大于第二阈值。
4.根据权利要求2所述的制作方法，其特征在于，
所述保护图案的材料为金属材料。
5.根据权利要求4所述的制作方法，其特征在于，
所述金属材料由银、铝和钼中的一种或多种组成。
6.根据权利要求5所述的制作方法，其特征在于，
所述保护图案的厚度为1000埃-2000埃。
7.根据权利要求1所述的制作方法，其特征在于，
所述刚性载板为玻璃载板。
8.一种柔性显示装置，其特征在于，所述柔性显示装置由权利要求1-7任一项的所述制作方法得到。
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