Patent ID: 11945922
Assignee: PI ADVANCED MATERIALS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polyimide film manufactured by imidizing a polyamic acid solution, wherein a following parameter A falls within a range from 0.4 to 1.13:

A=log((V·Mn)2·√{square root over (T)})−21

wherein V is a viscosity of the polyamic acid solution and is 200,000 cP to 250,000 cP as measured at 23° C. when a solid content thereof is 18.5 wt %, Mn is a number average molecular weight of polyamic acid dissolved in the polyamic acid solution and is 100,000 g/mole to 150,000 g/mole, and T is a thickness of the polyimide film and is 55 μm to 110 μm.