The electric charges accumulation of liquid crystal display PI (polyimide) is part of dielectric theory of condensed physics. But

less-advanced dielectric physics theory fails to offer a clear explanation in the process of charge accumulation and release in liquid crystal display PI layer. The paper here analyzes accumulation of charges in liquid crystal PI layer through the use of the Maxwells equations

and then it analyzes the release of charges in the light of temporal-frequency spectrum in which the effect can be separated into fast charges and slow charges. Correlation is therefrom demonstrated between the permitivity and conductivity to PI layer and Liquid Crystal layer.The relationship between the release time of the slow charge and the thickness of PI is shown also.