Patent ID: 9515037
Filing Date: 2016-12-06
CPC Classification: H01L

Claim Text:
1. A device comprising: a semiconductor substrate including first and second surfaces opposing to each other; a circuitry layer formed over the first surface of the semiconductor substrate; a first insulating layer formed over the circuitry layer; a second insulating layer formed over the second surface of the semiconductor substrate and comprising a first insulating element; a third insulating layer formed over the second surface of the semiconductor substrate with an intervention of the second insulating layer therebetween and comprising a second insulating element different from the first insulating element of the second insulating layer; wherein the third insulating layer substantially covers the second insulating layer; a penetration electrode penetrating through the semiconductor substrate, the circuitry layer, the second insulating layer and the third insulating layer; a cylindrical insulating ring in the semiconductor substrate surrounding the penetration electrode and isolated from the penetration electrode by the semiconductor substrate in a direction parallel to the first surface of the semiconductor substrate; and a front electrode coupled to the penetration electrode, wherein the first insulating layer includes an opening and the front electrode is exposed from the opening of the first insulating layer, the front electrode being spaced apart from the first insulating layer.