摘要
In this paper, surface properties of nano-film type patterning indium-tin-oxide (ITO) electrodes on polyethylene terephthalate (PET) substrates by pulsed laser ablation for bending test are investigated. Electrical characteristics of ITO electrodes on PET for 11,000 bending times are measured in real-time by using a flexiblecharacteristics inspection system. According to the results, change rates of electrical resistance of ITO patterns after 11,000 bending times with 0.5 and 1 bending curvatures are 0.94% and 2.82%, respectively. In addition, the surface properties of ITO electrodes on PET substrates for bending test are analyzed by scanning electron microscope and optical imaging profiler. According to the analysis, ITO electrodes on PET substrates for a large bending-curvature bending test are subjected to large stresses to become fractured and delaminated results in degradation of their conductive properties.