Patent ID: 7952157
Filing Date: 2011-05-31
Classification: H01L,H04B,H05K

Abstract:
1. An electromagnetic shielding device within an infrared receiver, the electromagnetic shielding device comprising a wiring frame, semiconductor chips mounted on the wiring frame, and an electromagnetic shielding cover having opposite sides, a bottom, a lower part and an upper part, wherein the electromagnetic shielding cover comprises a window, a shielding net provided in the window, an “n” shape protruding lug at the bottom at both sides of the electromagnetic shielding cover, and a tongue-shaped part at the lower part of the electromagnetic shielding cover, wherein each “n” shape protruding lug has a leg bent to engage on the wiring frame and the tongue-shaped part is engaged on and directly contacts an “L” shape slot of the wiring frame, thus forming an electromagnetic shielding structure transparent to the chips inside.