公开(公告)号：US09845407B2

公开(公告)日：2017-12-19

申请号：US14644996

申请日：2015-03-11

Applicant: Samsung Display Co. Ltd.

Inventor： Myung Im Kim ,  Won Sang Park ,  Yi Joon Ahn ,  Suk Man Yang ,  Yong Suk Yeo ,  Tae Hee Lee

IPC: C09D153/02 ,  H01G7/02 ,  C09D153/00

CPC classification number: C09D153/02 ,  C09D153/00 ,  H01G7/02 ,  H01G7/023

Abstract: Provided is a method of manufacturing a polymer electret. The method of manufacturing a polymer electrets includes forming a polymer thin film, which includes a block copolymer (BCP) having two or more polymer chains covalently bonded together; forming a nano-structure of the BCP in which a first block formed by first polymer chains that self-assemble together and a second block formed by second polymer chains that self-assemble together are micro-phase-separated, by performing an annealing process on the polymer thin film; forming a porous polymer film with a nano-pore by selectively removing one of the first block and the second block; and charging the porous polymer film.