Patent ID: 6268262
Filing Date: 2001-07-31
Classification: H01L

Abstract:
A method for forming air bridges on an electronic device comprising:forming a first conductor and a separate second conductor on an electronic device, said conductors having edges which are laterally adjacent to each other and separated by a void;forming a first amorphous silicon carbide coating on the edges of the conductors which are laterally adjacent to each other such that a void remains but the size of the void is decreased by the thickness of the coatings;depositing a sacrificial material in the void between the laterally adjacent amorphous silicon carbide coated edges of the conductors;depositing a second amorphous silicon carbide coating to cover the sacrificial material, said coating contacting the amorphous silicon carbide coatings on the edges of the conductors to encapsulate the sacrificial material;depositing a conductive bridge which electrically connects the first and second conductors, said bridge being deposited on the first and second conductors and the amorphous silicon carbide coating covering the sacrificial material;depositing a third amorphous silicon carbide coating to cover the conductive bridge; andetching the sacrificial material to leave the air bridge.