Described is a polyimide prepared from a diamine containing a spiro or cardo group in a molecule structure, wherein the dimensional stability of the polyimide can be improved at a high temperature, and thus the polyimide can provide a polyimide film useful for a flexible substrate.
所述是一种由分子结构中含有螺环或卡多基团的二胺制备的聚
酰亚胺,其中该聚
酰亚胺在高温下的尺寸稳定性可以得到改善,因此该聚
酰亚胺可以提供用于柔性基板的聚
酰亚胺薄膜。