Synthesis and Characterization of Polyimide Films for Flexible Display Substrates

  • Vu, Quang Hung (Department of Polymer Science, Kyungpook National University) ;
  • Kim, Jin-Woo (Department of Polymer Science, Kyungpook National University) ;
  • Park, Lee-Soon (Department of Polymer Science, Kyungpook National University)
  • Published : 2008.10.13

Abstract

A series novel films of polyimide (PI) and co-polyimide (Co-PI) containing fluorine with colorless, flexible properties was prepared by a two-step process from various commercial aromatic monomers such as 4,4'-(Hexafluoro iso propylidene) diphthalic anhydride (6FDA), 2,2'-Bis(Trifluoromethyl) benzidine (TFDB), 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (AH6FP) and Bis(4-(3-aminophenoxy)phenyl)sulfone (BAS). Furthermore, these obtained transparent and flexible Co-PI films exhibited excellent thermal stability with the decomposition temperature (at 5% weight loss) around of $500^{\circ}C$ and the glass transition temperature ($T_g$) in the range of $275-350^{\circ}C$.

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