Method of manufacturing a semiconductor device and a semiconductor device produced thereby

A method of manufacturing a semiconductor device sealed in a cured silicone body, the method comprising the steps of:

• placing an unsealed semiconductor device into a mold;
• and
• subjecting a curable silicone composition which is fed into a space between the mold and the unsealed semiconductor device to compression molding;
• wherein the curable silicone composition comprises at least the following components:
• (A) an epoxy-containing silicone
• and
• (B) a curing agent for an epoxy resin;
• and wherein component (A) is (A1) an organosiloxane which contains in one molecule at least two epoxy-containing univalent organic groups and which is represented by average unit formula:
• (R13SiO1/2)a(R22SiO2/2)b(R3SiO3/2)c
• wherein R1, R2, and R3 may be the same or different and designate optionally substituted univalent hydrocarbon groups or epoxy-containing univalent groups, with the proviso that 20 mole % or more of R3's are aryl groups;
• and “a”, “b”, and “c” are numbers which satisfy the following conditions:
• 0≦a≦0.8;
• 0≦b≦0.8;
• 0.2≦c≦0.9;
• and (a+b+c)=1;
• and/or
• (A2) a diorganosiloxane represented by the following general formula:
• A-R5—(R42SiO)mR42Si—R5-A
• wherein R4's designate optionally substituted univalent hydrocarbon groups which are free of unsaturated aliphatic bonds;
• R5's designate bivalent organic groups;
• and A's designate siloxane residual radicals represented by the following average unit formula:
• (XR42SiO1/2)d(SiO4/2)e
• wherein R4 is the same as defined above;
• X is a single bond for bonding to R5, a hydrogen atom, a group represented by R4, an epoxy-containing univalent organic group, or an alkoxysilylalkyl group, with the proviso that at least one X of the above formula is a single bond and at least two X's are epoxy-containing univalent organic groups;
• “d” is a positive number;
• “e” is a positive number;
• and “d/e” is a positive number between 0.2 and 4;
• and “m” is an integer equal to or greater than 1.