Circuit element with laser trimmed component

Details Circuit element with laser trimmed component Circuit element with laser trimmed component

2008-05-27

2008-05-27

Lee, K. Richard (Department: 2832)

Electrical resistors

Mechanically variable

Resistance value varied by removing or adding material

C338S254000, C338S327000

Reexamination Certificate

active

07378936

ABSTRACT:
A circuit element has a substrate layer with first and second faces. A conductive first layer overlays the first surface, and a conductive second layer overlays the second surface. The first layer defines a pattern with a trimmable portion. The second layer defines a pattern having a first conductive element registered with at least a portion of the trimmable portion, and a second conductive element electrically isolated from first element and encompassing the first element. The second element may be a ground plane that has an aperture surrounding the first component, which serves as a shield to prevent damage to any elements beyond the second layer.

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