Patent ID: 7105454

Claim:
An integrated circuit formed from an etched organic low-k dielectric layer over a substrate, made from the steps comprising: placing a hard mask over the organic low-k dielectric layer; placing a patterned photoresist layer over the hard mask layer; placing the substrate in an etching chamber; providing an etchant gas comprising NH3 into the etching chamber; generating a plasma from the NH3, which etches the organic dielectric layer, which is able to selectively etch the organic low-k dielectric layer with respect to the hard mask and strip the photoresist layer; selectively etching the organic low-k dielectric layer with respect to the hard mask; simultaneously stripping the photo resist layer during the selective etching of the organic low-k dielectric layer; placing an etch stop layer over the organic low-k dielectric layer; and placing a second organic low-k dielectric layer over the etch stop layer, wherein the second organic low-k dielectric layer is between the organic low-k dielectric layer and the hardmask.