公开(公告)号：US11597880B2

公开(公告)日：2023-03-07

申请号：US17752880

申请日：2022-05-25

Applicant: TAIMIDE TECHNOLOGY INCORPORATION

Inventor： Yi-Hsueh Ho ,  Meng-Ying Tsai

IPC: C09K19/52 ,  G02F1/00 ,  H05K1/03 ,  C08J5/18 ,  C09K19/38

Abstract: A polymer film is provided, the polymer film comprises a liquid crystal polymer, comprising a soluble liquid crystal polymer and an insoluble liquid crystal polymer; and a polyimide polymer, accounting for 5 wt % or more of the polymer film. A method for manufacturing the polymer film is also provided, the method for manufacturing the polymer film comprises steps: providing a liquid crystal polymer powder, a particle size of the liquid crystal polymer powder is 0.1 um to 20 um; providing a liquid crystal polymer glue, a solid content of which is greater than 3 wt %; providing a polyamic acid glue; mixing the liquid crystal polymer powder, the liquid crystal polymer glue and the polyamic acid glue into a mixed solution, the mixed solution is made into a gel film, and the gel film is baked at a temperature of 300° C. to form a polymer film.

公开(公告)号：US11926705B2

公开(公告)日：2024-03-12

申请号：US17700541

申请日：2022-03-22

Applicant: TAIMIDE TECHNOLOGY INCORPORATION

Inventor： Yi-Hsueh Ho ,  Meng-Ying Tsai

IPC: C08G73/10 ,  C08J3/14 ,  C08J5/18 ,  C08K3/04

CPC classification number: C08G73/1042 ,  C08G73/105 ,  C08G73/1071 ,  C08J3/14 ,  C08J5/18 ,  C08K3/04 ,  C08J2379/08

Abstract: A black matte polyimide film is provided, the black matte polyimide film includes polyimide, carbon black and polyimide fine powder. The polyimide component is obtained by polymerization of a dianhydride and a diamine, followed by chemical cyclization, in which the dianhydride is pyromellitic dianhydride, and the diamine comprises 5˜15 mol % of p-phenylenediamine and 95˜85 mol % of 4,4′-diaminodiphenyl ether; the carbon black is present in an amount of 2 to 8 wt % of the polyimide film; and the polyimide fine powder is present in an amount of 5 to 10 wt % of the polyimide film, such that the black matte polyimide film has a glossiness between 5 and 30 and a thermal expansion coefficient of less than 41 ppm/° C.