Patent Document ID: 20140115889
Application ID: 13663274
Patent Flag: 0

Claim One:
1. A method of manufacturing a laminate circuit board, comprising steps of: metalizing a substrate by forming at least one metal layer on a smooth surface of the substrate as a base layer; forming a first circuit metal layer on the base layer through a pattern transfer process; performing an additional formation process at least one time which forms an insulation layer and a second circuit metal layer on the insulation layer, wherein each insulation layer having at least one opening which is filled by the corresponding second circuit metal layer on the insulation layer such that the second circuit metal layer on a lowermost insulation layer as a lowermost second circuit metal layer connects with the first circuit metal layer and meanwhile two nearest second circuit metal layers which sandwich the corresponding insulation layer connect with each other; removing the substrate to expose the base layer; forming a support frame by forming a photo resist pattern on an edge of the base layer which does not overlap the first circuit metal layer and subsequently performing at least one itching process to remove part of the base layer which is not masked by the photo resist pattern; and forming a solder resist on an uppermost insulation layer, an uppermost second circuit metal layer and a co-plane which is formed by the first circuit metal layer and the lowermost insulation layer to mask part of the first circuit metal layer and part of the uppermost second circuit metal layer so as to form the laminate circuit board which has a thickness less than 150 μm.