Patent ID: 8741729
Filing Date: 2014-06-03
Classification: H01L

Abstract:
1. A method of forming a concentrically placed resistor and capacitor in a single trench structure, comprising: forming a deep trench through an STI structure and an underlying substrate; forming a first insulator material on a sidewall and bottom of the deep trench; forming a first electrode layer on the first insulator material, within the deep trench; forming a second insulator material on the first electrode layer; removing a portion of the second insulator material at a bottom of the deep trench to expose the first electrode layer; forming a second electrode layer in the deep trench on the second insulator material, and in electrical contact with the first electrode layer; forming a third insulator layer on the second electrode layer, in the deep trench; and forming a third electrode layer in the deep trench on the third insulator layer.