Lee Chang-Chun, Huang Pei-Chen, Wang Ko-Shun
Department of Mechanical Engineering, National Chung Hsing University, Taichung City 40227, Taiwan.
iboson Technology Corporation, Chubei City 30268, Taiwan.
Materials (Basel). 2016 Oct 19;9(10):850. doi: 10.3390/ma9100850.
The suitability of stacked thin films for next-generation display technology was analyzed based on their properties and geometrical designs to evaluate the mechanical reliability of transparent conducting thin films utilized in flexural displays. In general, the high bending stress induced by various operation conditions is a major concern regarding the mechanical reliability of indium-tin-oxide (ITO) films deposited on polyethylene terephthalate (PET) substrates; mechanical reliability is commonly used to estimate the flexibility of displays. However, the pattern effect is rarely investigated to estimate the mechanical reliability of ITO/PET films. Thus, this study examined the flexible content of patterned ITO/PET films with two different line widths by conducting bending tests and sheet resistance measurements. Moreover, a stress-strain simulation enabled by finite element analysis was performed on the patterned ITO/PET to explore the stress impact of stacked film structures under various levels of flexural load. Results show that the design of the ITO/PET film can be applied in developing mechanically reliable flexible electronics.
基于堆叠薄膜的特性和几何设计，分析了其在下一代显示技术中的适用性，以评估用于柔性显示器的透明导电薄膜的机械可靠性。一般来说，各种操作条件引起的高弯曲应力是沉积在聚对苯二甲酸乙二酯（PET）基板上的氧化铟锡（ITO）薄膜机械可靠性的主要问题；机械可靠性通常用于评估显示器的柔韧性。然而，很少有人研究图案效应以评估ITO/PET薄膜的机械可靠性。因此，本研究通过进行弯曲试验和薄层电阻测量，研究了两种不同线宽的图案化ITO/PET薄膜的柔性含量。此外，对图案化ITO/PET进行了有限元分析的应力-应变模拟，以探索不同弯曲载荷水平下堆叠薄膜结构的应力影响。结果表明，ITO/PET薄膜的设计可应用于开发具有机械可靠性的柔性电子产品。
