Patent ID: 6617046
Filing Date: 2003-09-09
Classification: C08F,C08G,C08K,H01L,Y10T

Abstract:
A sheet-like thermosetting resin composition usable for sealing a gap formed between a printed circuit board and a semiconductor element in a semiconductor package having a face-down structure, comprising a compound having the general formula (1):R1â€”(COOâ€”CH(CH3)â€”Oâ€”R2)nâ€ƒâ€ƒ(1) wherein n is a positive integer; R1 is a monovalent or higher polyvalent organic group; and R2 is a monovalent organic group, wherein R1 and R2 may be identical or different, or a compound having the general formula (2): CH2&boxH;CHâ€”Oâ€”R4â€”Oâ€”CH(CH3)â€”[OCOâ€”R3â€”COOâ€”CH(CH3)â€”Oâ€”R4â€”Oâ€”CH(CH3)]nâ€”OCOâ€”R3â€”COOâ€”CH(CH3)â€”Oâ€”R4â€”Oâ€”CH&boxH;CH2â€ƒâ€ƒ(2) wherein n is a positive integer; each of R3 and R4 is a divalent organic group, wherein R3 and R4 may be identical or different.