Displays from Transparent Films of Natural Nanofibers
Displays from Transparent Films of Natural Nanofibers
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DOI：
10.1557/mrs2010.654
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发表时间：
2010-03
期刊：
影响因子：
5
通讯作者：
A. N. Nakagaito;M. Nogi;H. Yano
中科院分区：
文献类型：
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作者：
A. N. Nakagaito;M. Nogi;H. Yano
有机发光二极管将显示器的图像质量、功耗和超薄外形提升到了一个全新的水平。此外，通过适当选择柔性基板，可以生产出重量轻、坚固且舒适的纸质柔性显示器。这使得可以卷起或折叠显示器以实现便携性，或者将它们作为可穿戴显示器整合到衣服中。塑料基材因其固有的柔韧性和光学品质而被认为是有前景的材料。然而，塑料的主要缺点之一是热膨胀大。基板的热膨胀必须与沉积在其上的层的热膨胀相兼容，否则这些层将在显示器制造中涉及的热循环过程中变得应变和破裂。为了减少塑料的热膨胀而不明显损失透明度，提出的解决方案之一是用纳米纤维增强塑料。这些纳米纤维在自然界中已经以纤维素的形式大量存在，但需要注意的是它们必须被正确提取。在这里，我们介绍了获得纤维素纳米纤维和生产用于柔性显示器的光学透明复合材料所需的方法。
Organic light-emitting diodes bring a whole new level of image quality, power consumption, and very thin profiles to displays. In addition, with the appropriate choice of a flexible substrate, paper-like flexible displays that are lightweight, robust, and conformable can be produced. This will make it possible to roll or fold the displays for portability or incorporate them in clothing as wearable displays. Plastic substrates are considered prospective materials due to their inherent flexibility and optical qualities. However, one of the major drawbacks of plastics is the large thermal expansion. The thermal expansion of the substrate has to be compatible with those of the layers deposited on it, otherwise these layers will become strained and crack during the thermal cycling involved in the display manufacture. One of the proposed solutions to reduce the thermal expansion of plastics without appreciable loss in transparency is to reinforce them with nanofibers. These nanofibers are already available in enormous quantities in nature, in the form of cellulose, with the caveat that they have to be extracted properly. Here we present the methodologies required to obtain the cellulose nanofibers and to produce optically transparent composites for use in flexible displays.