Synthesis and Thin Film Properties of Novel Photo-patternable Polyimide Gate Insulator with Trimethylolpropane Triacrylate Crosslinker
발표자
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초록
내용
The photo-patternable polyimide (DOCDA-6FHAB-IEM) containing urethane linkages as side chains was successfully synthesized with a simple one-step methacrylate esterification of the hydroxyl group having soluble polyimide (DOCDA-6FHAB) and isocyanatoethyl methacrylate (IEM). DOCDA-6FHAB-IEM polymer was mixed with trimethylolpropane triacrylate (TMTA) as photo-crosslinking agent and Irgacure 184 as photo-initiator. We have confirmed the photo-crosslinking process through FT-IR measurement before and after UV-visible exposure to polymer film. Crosslinked DOCDA-6FHAB-IEM+TMTA film showed good surface roughness as root mean square (rms) value as about 0.240 nm in AFM measurement and the surface energy of crosslinked DOCDA-6FHAB-IEM+TMTA was also found to 46.37 dyne/cm. Detailed film fabrication condition and further electrical characterizations of thin film will be presented.