Patent ID: 8029904

Claim:
A method of making an encapsulated semiconductor device, comprising the steps of: A. providing a curable aryl (thio)ether aryl silicon composition comprising: at least one silicon-based precursor which is a liquid silicon aryl (thio)ether aryl polysiloxane; and at least one silicon-based precursor which is a multi-linkable precursor comprising two or more reactive groups capable of reacting with a complementary reactive group of the same or other multi-linkable precursor; wherein the refractive index of the curable composition is at least 1.50; and B. curing the curable aryl (thio)ether aryl silicon composition to form the cured aryl (thio)ether aryl polysiloxane composition; C. providing a semiconductor device comprising semiconductor elements; and D. forming a coating on at least one surface of at least one of the semiconductor elements by a technique comprising steps selected from: applying the curable aryl (thio)ether aryl silicon composition to the surface before or during the step (B) of curing; applying the cured aryl (thio)ether aryl polysiloxane composition to the surface; and combinations thereof.