Patent ID: 7384856
Filing Date: 2008-06-10
Classification: H05K

Abstract:
1. A method of making a capacitive substrate, said method comprising: providing a conductive layer; providing a capacitive dielectric layer comprised of a mixture of a polymer material and a ferroelectric ceramic crystalline nanoparticle material, said capacitive dielectric layer having a thickness of from about 0.1 mils to about 5 mils and including first and second opposing sides; bonding said first opposing side of said capacitive dielectric layer to said conductive layer; curing said capacitive dielectric layer on said conductive layer at a temperature from about 150 degrees Celsius to about 200 degrees Celsius; forming at least one first conductor on said second opposing side of said capacitive dielectric layer after said curing of said capacitive dielectric layer; forming an electrical connection through said capacitive dielectric layer to said at least one first conductor; and forming at least one second conductor from said conductive layer, said at least one second conductor not being electrically connected to said at least one first conductor and said electrical connection through said capacitive dielectric layer, each of said at least one first and second conductors serving as capacitor electrodes when said conductors are electrically coupled to other circuit structure and said circuit structure is operational.