公开(公告)号：US20240034838A1

公开(公告)日：2024-02-01

申请号：US18355068

申请日：2023-07-19

Applicant: DOOSAN CORPORATION

Inventor： Kyungil AHN ,  Dongyoun KIM ,  Dayeong YU ,  Jaehyun SHIM

IPC: C08G73/10 ,  C08G77/26 ,  C08J5/18

CPC classification number: C08G73/106 ,  C08G73/1007 ,  C08G73/1078 ,  C08G77/26 ,  C08J5/18

Abstract: A polyamic acid resin is copolymerized including: at least one diamine; at least one acid dianhydride; and polyhedral oligomeric silsesquioxane, and a transparent polyimide film is formed using the polyamic acid resin. The transparent polyimide film secures both excellent optical and mechanical properties through organic-inorganic hybrid formation, thus being applicable as a cover window for display devices.