Patent ID: 6100770
Filing Date: 2000-08-08
Classification: H01L,H03B,H03K

Abstract:
An electrical device having a voltage dependent capacitance comprising:a first region of a semiconductor material;a second region and a third region of a semiconductor material formed in the first region, the second and third regions being separated by a separation region;an electrically insulating layer formed on the first region at least at a region corresponding to the separation region;a substantially conductive element formed on the insulating layer at least at a region corresponding to the separation region such that the insulating layer electrically insulates the substantially conductive element from the first, second and third regions;a first electrode connected to the substantially conductive element; anda second electrode connected to the second and third regions, wherein only a variable voltage between said first electrode and said second electrode are utilized to adjust said voltage dependant capacitance of said electrical device.