Invention Grant
- Patent Title: Printed wiring board and semiconductor device and processes to prepare the same
- Patent Title (中): 印刷电路板和半导体器件及其制备方法
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Application No.: US10368960Application Date: 2003-02-19
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Publication No.: US06709804B2Publication Date: 2004-03-23
- Inventor: Yusuke Tajima , Kazuo Takeuchi , Yasuo Shigemitsu , Etsu Takeuchi
- Applicant: Yusuke Tajima , Kazuo Takeuchi , Yasuo Shigemitsu , Etsu Takeuchi
- Priority: JP1999/15176 19990125; JP1999/147097 19990526
- Main IPC: G03C173
- IPC: G03C173

Abstract:
A printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device prepared by coating a substrate with a photosensitive resin composition comprising an oxygen sensitizer and a cis-diene-substituted polyamic acid or polyimide and forming fine patterns by exposure to radiation. Processes for producing a printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device, which comprises coating a substrate with the photosensitive resin composition and forming fine patterns by crosslinking cis-diene by oxidation polycondensation with singlet oxygen generated by exposure of the oxygen sensitizer to radiation. The photosensitive resin composition is of the negative type and exhibits high sensitivity and high resolution. The photosensitive resin composition forms a resin layer having excellent heat resistance.
Public/Granted literature
- US20030194621A1 Printed wiring board and semiconductor device and processes to prepare the same Public/Granted day:2003-10-16
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