Research Status and Development Trend of Photosensitive Polybenzoxazole
WANG Tao1,2, LI Jinhui1, ZHAO Yaxu2, ZHU Liang2, ZHANG Shaoxia2, ZHANG Guoping1, SUN Rong1, WONG Chingping3
1 Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta 30332, United States
Abstract: As one of the typical thermal stable photosensitive dielectric materials, photosensitive polybenzoxazole (PSPBO) exhibits excellent mechanical properties, heat resistance, insulation properties, low water absorption, low dielectric constant and outstanding lithographic properties. It has been widely used in some key areas such as microelectronics and aerospace. In particular, PSPBO is widely employed in interlayer dielectric materials, stress buffer layers and protective layers in integrated circuit semiconductor packaging, being a key material for advanced processes in fan-out packaging. On the other hand, with the rapid development of 5G high-frequency and high-speed communication, flexible display and OLED et al., higher requirements of low temperature curing, high adhesive strength, low dielectric constant, and thermal conductivity have been raised. More importantly, core technology of PSPBO is absent in China. This mini-review describes the development of PSPBO, including positive-working PSPBO, negative-working PSPBO and the development of their applications. At the same time, some novel development prospects are prospected. We hope that this mini-review could provide useful information to Chinese researchers for the basic research and industrial applications of PSPBO.
王涛, 李金辉, 赵雅绪, 朱良, 张少霞, 张国平, 孙蓉, 汪正平. 光敏聚苯并噁唑的研究现状与发展趋势[J]. 材料导报, 2020, 34(19): 19183-19189.
WANG Tao, LI Jinhui, ZHAO Yaxu, ZHU Liang, ZHANG Shaoxia, ZHANG Guoping, SUN Rong, WONG Chingping. Research Status and Development Trend of Photosensitive Polybenzoxazole. Materials Reports, 2020, 34(19): 19183-19189.
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