Patent ID: 7859106
Filing Date: 2010-12-28
Classification: H01L,H05K

Abstract:
1. A multilayer printed circuit board using paste bumps, the multilayer printed circuit board comprising: a first copper foil; a plurality of first paste bumps joined to a surface of the first copper foil; a plurality of second paste bumps electrically interconnected with the first paste bumps; a second copper foil having the plurality of second paste bumps joined thereto; an insulation element placed between the first copper foil and the second copper foil and holding the first paste bumps and the second paste bumps; an inner layer circuit formed by removing at least a portion of the first copper foil or the second copper foil; an outer layer board stacked on the first copper foil or the second copper foil; and an outer layer circuit formed on a surface of the outer layer board.