Patent ID: 8901657
Filing Date: 2014-12-02
Classification: H01L

Abstract:
1. An apparatus comprising: a substrate; a first capacitor plate having a first surface on a portion of the first capacitor plate opposite the substrate, vertical walls with a height from the substrate, and four square edges defining edges between the first surface and the vertical walls; and a second capacitor plate having a second surface that faces the first surface and is larger than and parallel to the first surface, wherein the second capacitor plate includes an overhanging portion around a periphery of the second surface that extends from the second surface toward the substrate, the overhanging portion laterally overlapping at most a portion of the vertical walls of the first capacitor plate that is less than a majority of the height of the vertical walls and defining a recessed portion that is opposite the first surface such that the first capacitor plate is disposed between the recessed portion and the substrate.