Patent ID: 7608477

Claim:
A process for producing a component-embedded substrate, comprising steps of: connecting and fixing a first electronic component to a first electrode pattern on a first supporting layer with a conductive bonding material; press-bonding a second supporting layer including a second electrode pattern onto the electronic component-fixed surface of the first supporting layer with a first prepreg therebetween to perform transfer; separating the first supporting layer and the second supporting layer from the first prepreg such that the first and second electrode pattern are disposed on a front surface and a back surface of the first prepreg; curing the first prepreg before or after the step of separating the first supporting layer and the second supporting layer from the first prepreg; connecting and fixing a second electronic component onto a back surface of the second electrode pattern with a conductive bonding material after the step of curing the first prepreg; press-bonding a third supporting layer including a third electrode pattern onto a second electronic component-fixed surface with a second prepreg therebetween to perform transfer; separating the third supporting layer from the second prepreg; and curing the second prepreg before or after the step of separating the third supporting layer from the second prepreg, wherein the prepregs and the electrode patterns are sequentially laminated; wherein the step of curing the first prepreg further comprises substeps of: performing temporary curing before separating the first and second supporting layers from the first prepreg; and performing complete curing after separating the first and second supporting layers from the first prepreg.