Patent ID: 7283029
Filing Date: 2007-10-16
Classification: B33Y,H01F,Y10T

Abstract:
1. A method of fabricating a high-Q, three-dimensional microelectronic transformer with a primary coil and a secondary coil comprising: providing a pre-processed semiconductor substrate; depositing a photo-resist sacrificial layer on top of the semiconductor substrate; depositing a layer of metal alloy on top of the sacrificial layer; patterning the metal layers by depositing a photo-resist mask layer on top of the layer of metal alloy to define areas for removal of certain areas of the layer of metal alloy to form a number of finger-shaped extensions; releasing the certain areas of metal alloy from the sacrificial layer and the substrate in order to allow the areas to bend upward from the semiconductor substrate; and joining the end part of the finger-shaped extensions of the certain areas of metal alloy layers with neighboring end part of the finger-shaped extensions of the certain areas of metal alloy layers to form a three-dimensional structure as a microelectronic transformer with a primary coil and a secondary coil.