| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.635 |
| 발표분야 | 기능성 고분자 |
| 제목 | Synthesis of Colorless and Transparent Photosensitive Polyimide |
| 초록 | Colorless photosensitive polyimides have attracted considerable attention in insulation layer for TFT-LCD devices due to their simple fabrication process1. In this study, negative-type photosensitive polyamic acids have been prepared by condensation reaction of 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA), 2-(methacryloyloxy) ethyl 3,5-diaminobenzoate (MEDAB) and 2-(methacryloyloxy) ethyl 4-aminobenzoate (MEAB) in N-methyl-2-pyrrolidone (NMP). We have studied the factors that affect transmittance in preparation of colorless and transparent polyimides. The transmittances of polyimide films were affected by molecular weights, the amount of end-capper, curing conditions, the amount of photoinitiator and the amount of glycidylmethacrylate (GMA) etc.. The highest transmittance in 2 um thickness of polyimides film was about 95% at 400 ㎚ wavelength. Furthermore, the polyimide precursor was found to be a negative-type photosensitive polyimide in the presence of photo initiator by uv irradiation, followed by development with 2.38% tetramethylammonium hydroxide (TMAH) aqueous solution. Fig. 1. Effect of amount of photoinitiator and process condition on transmittance. Fig. 2. Effect of amount of GMA and process condition on transmittance. 참고문헌 1. J. M. Bureau and J. P. Droguet, Polyimides: applications of polyimides as photosensitive materials, Marcel Dekker, New York. 1996, pp 743-757. |
| 저자 | 최성묵1, 김경준2, 권수한3, 최길영1, 이재흥1, 이미혜1 |
| 소속 | 1한국화학(연), 2(주) LG 화학 기술(연), 3충북대 |
| 키워드 | photosensitive; polyimide; transmittance |
