A flexible, high dielectric constant polyimide film composed of either a single layer of an adhesive thermoplastic polyimide film or a multilayer polyimide film having adhesive thermoplastic polyimide film layers bonded to one or both sides of the film and having dispersed in at least one of the polyimide layers from 4 to 85 weight % of a ferroelectric ceramic filler, such as barium titanate or polyimide coated barium titanate, and having a dielectric constant of from 4 to 60.
The high dielectric constant polyimide film can be used in electronic circuitry and electronic components such as multilayer printed circuits, flexible circuits, semiconductor packaging and buried film capacitors.
一种柔性高介电常数聚
酰亚胺薄膜,由单层粘合剂热塑性聚
酰亚胺薄膜或多层聚
酰亚胺薄膜组成,多层聚
酰亚胺薄膜的一面或两面均粘合有粘合剂热塑性聚
酰亚胺薄膜层,至少其中一层聚
酰亚胺薄膜层中分散有 4 至 85 重量%的
铁电陶瓷填料,如
钛酸钡或聚
酰亚胺涂层
钛酸钡,介电常数为 4 至 60。
高介电常数聚
酰亚胺薄膜可用于电子电路和电子元件,如多层印刷电路、柔性电路、半导体封装和埋膜电容器。