Imaging Science and Photochemistry ›› 1999, Vol. 17 ›› Issue (4): 334-337.DOI: 10.7517/j.issn.1674-0475.1999.04.334

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STUDIES ON A KIND OF NEGATIVE PHOTORESIST BASED ON PHOTOSENSITIVE POLYIMIDES

LI Jiashen1, LI Zuobang1, ZHU Pukun1, YANG Lifang1, LI Fang1, JIAO Xiaoming2, CHENG Aiping2, CHEN Jianjun 2   

  1. 1. Hebei University of Technology, Tianjin 300130, P. R. China;
    2. The Institute of Chemical Reagent, Beijing 100022, P. R. China
  • Received:1998-10-27 Revised:1999-02-09 Online:1999-11-20 Published:1999-11-20

Abstract: A kind of negative photoresist, composed of photosensitive polyimides and N-methyl-2-pyrrolidone was formulated. The curing mechanism and the relationship of the properties and structure of PSPIs were studied. The results of TGA show that the PSPIs have excellent heat-resistance. Based on our research, the pattern with line-width as low as 2.5 μm was gained with the conventional UV photolithography under the optimum parameters.

Key words: photosensitive polyimide, curing mechanism, thermogravimtric analysis, photolithographic process