Patent ID: 7164339
Filing Date: 2007-01-16
Classification: H01F

Abstract:
1. An integrated transformer with a stack structure, comprising: a middle dielectric layer; a bottom dielectric layer; a first conductive line of a primary side disposed over a surface of the middle dielectric layer, laid as a first preset pattern, wherein a terminal of the first conductive line of the primary side is a first terminal of the primary side of the integrated transformer, and another terminal of the first conductive line of the primary side is a first plug terminal of the primary side; a second conductive line of the primary side disposed over the surface of the middle dielectric layer, laid as the first preset pattern, wherein the second conductive line of the primary side is symmetric to the first conductive line of the primary side through a first axis, a terminal of the second conductive line of the primary side is a second terminal of the primary side of the integrated transformer, and another terminal of the second conductive line of the primary side is a second plug terminal of the primary side; a third conductive line of the primary side disposed over a surface of the bottom dielectric layer, laid as a second preset pattern, wherein a terminal of the third conductive line of the primary side is a third plug terminal of the primary side; a first via plug, connecting the first plug terminal of the primary side and the third plug terminal of the primary side; a fourth conductive line of the primary side disposed over the surface of the bottom dielectric layer, laid as the second preset pattern, wherein the fourth conductive line of the primary side is symmetric to the third conductive line of the primary side through a second axis, a terminal of the fourth conductive line of the primary side and another terminal of the third conductive line of the primary side, which is in a opposite position to the third plug terminal of the primary side, are connected at the second axis, and another terminal of the fourth conductive line of the primary side is a fourth plug terminal of the primary side; a second via plug, connecting the second plug terminal of the primary side and the fourth plug terminal of the primary side; a first conductive line of a secondary side disposed over the surface of the middle dielectric layer, symmetric to first conductive line of the primary side through a third axis, wherein a terminal of the first conductive line of the secondary side is a first terminal of the secondary side of the integrated transformer, and another terminal of the first conductive line of the secondary side is a first plug terminal of the secondary side; a second conductive line of the secondary side disposed over the surface of the middle dielectric layer, symmetric to the second conductive line of the primary side through the third axis and symmetric to the first conductive line of the secondary side through the first axis, wherein a terminal of the second conductive line of the secondary side is a second terminal of the secondary side of the integrated transformer, and another terminal of the second conductive line of the secondary side is a second plug terminal of the secondary side; a third conductive line of the secondary side disposed over the surface of the bottom dielectric layer, symmetric to the third conductive line of the primary side through a fourth axis, wherein a terminal of the third conductive line of the secondary side is a third plug terminal of the secondary side; a third via plug, connecting the first plug terminal of the secondary side and the third plug terminal of the secondary side; a fourth conductive line of the secondary side disposed over the surface of the bottom dielectric layer, symmetric to the fourth conductive line of the primary side through the fourth axis and symmetric to the third conductive line of the secondary side through the second axis, wherein a terminal of the fourth conductive line of the secondary side and another terminal of the third conductive line of the secondary side, which opposite to the third plug terminal of the secondary side, are connected at the second axis, and another terminal of the fourth conductive line of the secondary side is a fourth plug terminal of the secondary side; and a fourth via plug, connecting the second plug terminal of the secondary side and the fourth plug terminal of the secondary side.