The isolation behaviour of polyimide thin films has been studied. Properties such as DC conductivity and the threshold electrical fields were obtained through a steady state current measurement under an applied voltage across a metal-insulator-metal capacitor. An inverse relationship has been found between the curing temperature and threshold electric field that would be applied to the structure. The results correlate with high voltage endurance life-time curves for digital isolators processed at different temperatures.

中文翻译：

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聚酰亚胺薄膜的电场直流电导率依赖性

研究了聚酰亚胺薄膜的隔离行为。直流电导率和阈值电场等特性是通过在金属-绝缘体-金属电容器两端施加电压下的稳态电流测量获得的。已经发现固化温度和施加到结构上的阈值电场之间存在反比关系。结果与在不同温度下处理的数字隔离器的高压耐久性寿命曲线相关。