公开(公告)号：US20190352565A1

公开(公告)日：2019-11-21

申请号：US16431908

申请日：2019-06-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yoshimasa NISHI ,  Sunao FUKUTAKE ,  Akira MORIYA ,  Kanto IIDA

IPC: C09K19/30 ,  C09K19/38 ,  C09K19/02 ,  H05K1/09

Abstract: A black liquid-crystal polymer film that contains a black pigment and a liquid crystal polymer and the black liquid-crystal polymer film has a lightness of 45 or less, a dielectric loss tangent of 0.0035 or less, a minimum dielectric breakdown strength of 60 kV/mm or more, and a maximum-to-minimum ratio of in-plane thermal linear expansion coefficient in the range of 1.0 to 2.5.