Electrical resistors – With base extending along resistance element – Resistance element coated on base
Reexamination Certificate
2006-07-04
2006-07-04
Hoang, Tu (Department: 2832)
Electrical resistors
With base extending along resistance element
Resistance element coated on base
C338S325000
Reexamination Certificate
active
07071811
ABSTRACT:
The present invention provides a diffusion resistor that is formed in the substrate. A diffusion region is formed within the substrate that contains a first and second contact region. These contact regions extend downward from the surface of the substrate. A third contact is located within the diffusion region between the first and second contacts. This contact also extends downward from the surface of the substrate. These contacts are connected to metal layers. The first and second contacts form the two ends of the diffusion resistor. The third contact forms a Schottky diode such that application of a voltage to this contact forms a depletion region within the diffusion region. The depletion region changes in size depending on the voltage applied to the third contact to change the resistance of the depletion resistor.
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Erickson Sean Christopher
Fukumoto Jay Tatsuo
Shaw Jonathan Alan
Easthom Karl D.
Hoang Tu
LSI Logic Corporation
Yee & Associates
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