Patent ID: 9704854
Date: 2017-07-11
CPC Classifications: H01L,H02M

Claim:
1. A direct current-to-direct current (DC-to-DC) converter, comprising: a substrate having a switching element region and a capacitor region defined by an isolation layer; a transistor formed over the switching element region; a landing plate formed over the isolation layer; a capacitor formed over the landing plate, wherein the capacitor includes a bottom plate, a dielectric layer and a top plate; multi-layer metal lines disposed in an upper portion of the transistor and coupled with the transistor; and an interconnection portion coupled with the multi-layer metal lines to electrically connect the transistor with the capacitor, wherein the bottom plate has a form of continuum and extended to a boundary line between the switching element region and the capacitor region, wherein the multi-layer metal lines are contacted with the top plate, wherein the dielectric layer of the capacitor is extended to overlap with an upper portion of the multi-layer metal lines.