Variable capacitor

U.S. Patent Number: 5339211

Abstract: An electrical or electronic circuit having at least one variable capacitor device connected in parallel relationship in the circuit by at least a pair of electrodes. The improvement constitutes the capacitor device being in the form of a silicon dioxide film derived from the oxidation of a hydrogen silsequioxane resin. The silicon dioxide film is characterized by a non-linear substantially symmetrical jV curve which includes a threshold voltage at which the silicon dioxide film undergoes a reversible transition from insulating to conducting. The jV curve further includes a regime of negative differential resistance in which an increase in the voltage applied to the silicon dioxide film above the threshold voltage causes a decrease of the current.

Inventors: Pernisz; Udo C. (Midland, MI), Michael; Keith W. (Midland, MI)

Assignee: Dow Corning Corporation (Midland, MI)

Application Number: 07/966,640

Issued: 1994-08-16

Expired: 2006-08-16

Classes: 361/277 ; 257/E45.003; 361/281

Field of search: 361/277,280,281

Click the image above to view patent images at uspto.gov within a frame.

Click here for the fulltext page on uspto.gov within a frame.