Patent ID: 7939379

Claim:
A method for making a hybrid carrier, the method comprising the steps of: (a) providing a substrate, having a first electric layer, a dielectric layer and a middle electric layer in sequence, the dielectric layer having a first area and a second area, wherein the first area is at a central portion of the dielectric layer and the second area is around the first area; (b) removing parts of the middle electric layer and the dielectric layer to form at least one first opening and a plurality of second openings at the first area and the second area respectively, that do not extend through the first electric layer, to expose parts of the first electric layer; (c) forming a seed metal layer, the seed metal layer covering the middle electric layer, the dielectric layer and the first electric layer; (d) forming a second electric layer, the second electric layer having a first portion and a second portion on the first area and the second area respectively, to cover the seed metal layer in the first opening and the second openings, and exposing parts of the seed metal layer, wherein the second electric layer is substantially higher than the seed metal layer; (e) removing the exposed seed metal layer and the middle electric layer thereunder; and (f) removing parts of the first electric layer correspondingly opposite the exposed seed metal layer, wherein step (f) comprises the steps of (f1) disposing a second dry film on parts of a first surface of the first electric layer correspondingly opposite the exposed seed metal layer, (f2) forming a resist layer to cover the second electric layer, and to cover parts of the first surface of the first electric layer corresponding to the first portion and the second portion, (f3) removing the second dry film to expose the parts of the first surface of the first electric layer correspondingly opposite the exposed seed metal layer, and (f4) removing the parts of the first electric layer correspondingly opposite the exposed seed metal layer.