Patent ID: 7897877
Filing Date: 2011-03-01
Classification: H01L,H05K

Abstract:
1. A capacitive substrate comprising: a first unlaminated, pure glass layer having a first surface and a second surface; a first conductor directly bonded on said first surface of said first glass layer; a capacitive dielectric layer on said first surface of said first glass layer and substantially over said first conductor, said capacitive dielectric layer being heat treated at a temperature within the range of from about 400 degrees C. to about 800 degrees C., and laser annealed to fabricate capacitive substrates with a tunable property; a second conductor on said first capacitive dielectric layer; a second glass layer on said first capacitive dielectric layer and directly bonded substantially over said second conductor, said second glass layer having a first surface, said bonding of said second glass layer on said capacitive dielectric layer being performed by the heat treating thereof at a temperature within the range of from about 400 degrees C. to about 1000 degrees C.; a first thru-hole electrical connection to said first conductor; and a second thru-hole electrical connection to said second conductor, said first and second conductors and said capacitive dielectric layer forming a capacitor when said capacitive substrate is in operation.