Patent ID: 7365972
Filing Date: 2008-04-29
Classification: H01L,H05K

Abstract:
1. An electronic device with dual heat dissipating structures, comprising: a circuit board having a first heat producing surface and a second heat producing surface with a plurality of protrusions disposed on said first and said second heat producing surfaces respectively; a major heat dissipating structure disposed on said first heat producing surface of said circuit board; an auxiliary heat dissipating structure disposed on said second heat producing surface of said circuit board; and a connective portion connecting said auxiliary heat dissipating structure and said major heat dissipating structure; wherein said second heat producing surface of said circuit board is a high-temperatured area relative to said first heat producing surface of said circuit board in an electronic system so as to conduct heat produced by said second heat producing surface of said circuit board to said major heat dissipating structure through said auxiliary heat dissipating structure and said connective portion for heat dissipation.