Patent ID: 9462673
Filing Date: 2016-10-04
CPC Classification: H01L,H05K

Claim Text:
1. A heat sink comprising: a heat sink body; a thermally conductive rubber ring; and a filling material, wherein a through hole is disposed in a position on the heat sink body corresponding to a to-be-cooled electronic element, wherein the to-be-cooled electronic element is mounted on a circuit board and located between the circuit board and the heat sink body, wherein the thermally conductive rubber ring is placed on an outside edge of a surface of the to-be-cooled electronic element, wherein the heat sink body presses the thermally conductive rubber ring against the surface of the to-be-cooled electronic element, wherein there is a gap between the to-be-cooled electronic element and the heat sink body, wherein the gap is connected to the through hole, and wherein the filling material is injected into the through hole and fills the gap.