ADHESIVE SHEET, METAL LAMINATE SHEET AND PRINTED WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To obtain an adhesive sheet that is obtained by using a polyimide film as a substrate keeping heat resistance and flexibility at high levels and having no warpage of the film by heat and has heat-resistant surface retention, a metal laminate sheet and a printed wiring board.

SOLUTION: The adhesive sheet is obtained by using a polyimide film as a substrate in which a polyimide contains a pyromellitic acid residue as the residue of at least an aromatic tetracarboxylic acid and a diaminodiphenyl ether residue as the residue of an aromatic diamine and which has≤10% curling degree after heat treatment of the film at 300°C and forming a thermoplastic adhesive layer on the film. The metal laminate sheet is obtained by laminating a metal foil to the adhesive sheet. The printed wiring board is obtained by removing an unnecessary part of the metal laminate sheet.

COPYRIGHT: (C)2007,JPO&INPIT