公开(公告)号：US20210102034A1

公开(公告)日：2021-04-08

申请号：US17009802

申请日：2020-09-02

Applicant: TAIMIDE TECHNOLOGY INCORPORATION

Inventor： YI-HSUEH HO ,  YUN-HSIANG CHANG ,  YI-CHIA HUANG ,  PAUL S.C. WU

IPC: C08J5/18 ,  C08G73/10 ,  C09D179/08

Abstract: A manufacturing method of a continuous transparent polyimide film for a display includes the following steps providing a roll-to-roll polyimide film; providing a polyimide precursor, which is coated on the polyimide film; and baking the polyimide precursor at a baking temperature that is at least 20° C. higher than a glass transition temperature of the transparent polyimide film, such that the transparent polyimide film has an optical transmittance of greater than 85%, a chromaticity (b*) of less than 2, and a standard deviation of three axial refractive indices of the transparent polyimide film is less than 0.0012. Thus, the transparent polyimide film with reduced light leakage can be obtained.