Patent ID: 6200831
Filing Date: 2001-03-13
Classification: C08G,H01L,Y10S,Y10T

Abstract:
A process for producing a resin-sealed semiconductor device, which comprisesa protecting film formation step of forming, on at least part of the surface of a semiconductor element, a surface-protecting film by coating thereon a polyimide precursor composition containing a polyimide precursor having a recurring unit constitution represented by the following general formula (1) and heat-curing the coated polyimide precursor composition: ##STR48##wherein R.sup.1 is a trivalent or tetravalent aromatic group; R.sup.2 and R.sup.3 are each a tetravalent organic group having 4 or more carbon atoms; R.sup.4 is a bivalent organic group having 4 or more carbon atoms; X is a bivalent organic group containing at least one member selected from the group consisting of oxygen and nitrogen: Y is a monovalent organic group having 15 or less carbon atoms; n=5-100 and m=0-95 with a proviso that n+m=100; and p is 1 or 2,a semiconductor element-mounting step of mounting the above-obtained semiconductor element having the protecting film, on external terminals, anda sealing step of sealing the semiconductor element mounted on the external terminals, with a resin.