Patent ID: 7450620

Claim:
An electrode structure comprising: a first conductive layer: an insulation layer that covers at least a portion of a marginal area of an upper surface of the first conductive layer and has a first sloped section that slopes down toward the upper surface of the first conductive layer; a first electrode having one end formed on the first conductive layer and another end formed on the first sloped section; a third electrode that is formed on the first electrode and the insulation layer, and covers the another end of the first electrode; a second conductive layer; and a second electrode having one end formed on the second conductive layer; wherein the insulation layer that covers at least a portion of a marginal area of an upper surface of the second conductive layer and has a second sloped section that slopes down toward the upper surface of the second conductive layer, the second electrode has another end formed on the second sloped section, the third electrode is formed on the second electrode and covers the another end of the second electrode.