POLYAMIDE-IMIDE PRECURSOR, POLYAMIDE-IMIDE FILM, AND DISPLAY DEVICE COMPRISING SAME

    公开(公告)号:EP3241860A4

    公开(公告)日:2018-05-23

    申请号:EP15875769

    申请日:2015-12-31

    申请人: KOLON INC

    摘要: The present invention relates to a polyamide-imide precursor, a polyamide-imide obtained by imidizing the same, a polyamide-imide film, and an image display device including the film. The polyamide-imide precursor includes, in a molecular structure thereof, a first block, obtained by copolymerizing monomers including dianhydride and diamine, a second block, obtained by copolymerizing monomers including an aromatic dicarbonyl compound and the diamine, and a third block, obtained by copolymerizing monomers including the aromatic dicarbonyl compound and aromatic diamine. The dianhydride for forming the first block includes 2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA), and the diamine for forming the first block and the second block includes 9,9-bis(3-fluoro-4-aminophenyl)fluorene (FFDA).