Patent ID: 8674352
Filing Date: 2014-03-18
Classification: G01R,H01L

Abstract:
1. An apparatus comprising: a substrate having: a first region of a first conductivity type; a second region of a second conductivity type that is substantially surrounded by the first region; and a third region of the first conductivity type that is substantially surrounded by the second region; a first dielectric layer formed over at least a portion of the substrate and located over the first, second, and third regions; a first conductive layer formed over at least a portion of the first dielectric layer and located over at least a portion of the first and second regions, wherein the first conductive layer is configured to form a first electrode of a capacitor; a second dielectric layer that is formed over at least a portion of the first conductive layer and located over at least a portion of the first, second, and third regions; a second conductive layer having: a plate that is formed over at least a portion of the second dielectric layer and that is located over at least a portion of the first and second regions, wherein the plate is configured to form a second electrode of the capacitor, wherein the plate is electrically coupleable to a first test pad and a second test pad; and a cap that is formed over at least a portion of the second dielectric layer, that is located over at least a portion of the first, second, and third regions, and that is spaced apart from the plate wherein the plate can be electrically coupled to a test pad; and a via that is electrically coupled to the cap and the third region and that extends through the first and second dielectric layers.