Patent ID: 7862987

Claim:
A method for forming an electrical structure comprising: providing a first substrate structure comprising a substrate, an insulator layer formed over and in contact with said substrate, an electrically conductive wire formed within said substrate, and an electrically conductive pad formed over and in contact with said electrically conductive wire and said insulator layer, wherein a first portion of said electrically conductive pad is formed over and in contact with a first portion of said insulator layer, wherein a second portion of said electrically conductive pad is formed over and in contact with said electrically conductive wire, and wherein a third portion of said electrically conductive pad is formed over and in contact with a second portion of said insulator layer; forming a first layer over and in contact with said first substrate structure, said first layer comprising a first photosensitive material having a first polarity; performing, after said forming said first layer, a first partial cure process of said first layer; forming a second layer over and in contact with said first layer, said second layer comprising a second photosensitive material having a second polarity opposite to said first polarity; performing, after said forming said second layer, a second partial cure process of said second layer; placing, after said performing said second partial cure process, a mask structure over said second layer; simultaneously exposing a portion of said second layer and a portion of said first layer to a photo exposure light source; performing, after said simultaneously exposing, a third partial cure process of said portion of said second layer and said portion of said first layer; first developing, after said performing said third partial cure process, said portion of said second layer such that a first structure is formed; second developing, after said first developing, said portion of said first layer such that a second structure is formed, wherein said second structure comprises a first section and a second section, wherein said first section comprises a first vertical surface in contact with a first vertical surface of said first portion of said electrically conductive pad, wherein said second section comprises a first horizontal surface in contact with a first horizontal surface of said first portion of said electrically conductive pad; and performing, after said second developing, a full cure process of said first layer and said second layer.