Hexahedral LED Arrays with Row and Column Control Lines Formed by Selective Liquid‐Phase Plasticization and Nondisruptive Tucking‐Based Origami,Advanced Materials Technologies

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Hexahedral LED Arrays with Row and Column Control Lines Formed by Selective Liquid‐Phase Plasticization and Nondisruptive Tucking‐Based Origami
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-03-23 , DOI: 10.1002/admt.202000010
Gi‐Gwan Kim ₁ , Yeongmin Kim ₁ , Seonggwang Yoo ₁ , Hun Soo Jang ₁ , Heung Cho Ko ₁

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Origami/kirigami of flexible electronics is a promising way to produce 3D electronics because well‐developed silicon‐based technologies can be used for the planar circuitry layout. However, it is still a challenge to enable general row and column control lines to develop 3D addressable sensory and display systems. This study addresses this issue via selective plasticization of an acrylonitrile butadiene styrene (ABS) film with N ,N ‐dimethylformamide (DMF) through polydimethylsiloxane (PDMS) microfluidic channels. The use of DMF provides plasticization in a controllable manner because of the fast absorption of the DMF in the liquid phase during the plasticization process, a prolonged retention time of DMF in the ABS film at room temperature during the transformation process, and fast desorption at 60– 80 °C for the deplasticization process. The use of microfluidic channels allows high‐resolution selective plasticization to enable extreme cases of local bending or even folding inward and outward, thereby enabling tucking‐based origami with no crack generation. The lamination of membrane‐type electronic devices to an ABS film followed by selective plasticization and transformation enables nondisruptive tucking‐based origami at the electronics level, such as for the demonstration of a hexahedral light‐emitting diode (LED) array with general row and column control lines.

中文翻译：

具有选择性液相增塑和基于非破坏性折皱的折纸形成的具有行和列控制线的六面体LED阵列

柔性电子产品的折纸/折纸是生产3D电子产品的一种有前途的方法，因为可以将成熟的基于硅的技术用于平面电路布局。然而，使通用的行和列控制线能够开发3D可寻址的传感和显示系统仍然是一个挑战。这项研究通过选择性增塑N，N的丙烯腈丁二烯苯乙烯（ABS）薄膜解决了这个问题‐二甲基甲酰胺（DMF）通过聚二甲基硅氧烷（PDMS）微流体通道。由于在塑化过程中DMF在液相中快速吸收，在转化过程中室温下DMF在室温下在ABS膜中的保留时间延长以及在60°C时快速解吸，因此DMF的使用可控地提供增塑作用。 –脱塑过程为80°C。使用微流体通道可以实现高分辨率的选择性塑化，以实现局部弯曲甚至向内和向外折叠的极端情况，从而实现基于折皱的折纸，而不会产生裂纹。将膜片式电子设备层压到ABS膜上，然后进行选择性塑化和转化，从而可以在电子学层面实现基于无褶皱的折纸折纸，

更新日期：2020-03-23

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