Electronic device including shielding and heat dissipation structure

A mobile communication device comprising:

• a housing which forms an exterior of the electronic device and provides a receiving space within the housing;
• an antenna module in the receiving space of the housing;
• a printed circuit board which is in the receiving space of the housing and facing the antenna module;
• an electronic component on the printed circuit board;
• an electrical shield extended around the electronic component, the electrical shield comprising:
• a side wall which extends around the electronic component, and
• an upper portion extending from the side wall to define an opening of the electrical shield which corresponds to the electronic component;
• a heat diffusion pattern on the electronic component;
• and
• a shielding sheet which extends across the opening of the electrical shield and commonly overlaps the electronic component, the electrical shield and the heat diffusion pattern,
• wherein the shielding sheet comprises:
• a first heat diffusion member which is inside the opening of the electrical shield and contacts the heat diffusion pattern;
• and
• a second heat diffusion member which is attached to the first heat diffusion member, extends across the opening of the electrical shield and contacts both the upper portion of the electrical shield and the first heat diffusion member, and
• within the receiving space, the shielding sheet and the antenna module define an air gap therebetween.

An electronic device comprising:

• a printed circuit board;
• an electronic component which is on the printed circuit board;
• an electrical shield which is attached to the printed circuit board and extends around the electronic component, the electrical shield comprising a side wall which extends around the electronic component, and an upper portion which extends from the side wall to define an opening of the electrical shield which corresponds to the electronic component;
• a shielding sheet which is connected to the electrical shield, at the upper portion thereof, and forms a shielding cavity together with the printed circuit board and the electrical shield,
• wherein the shielding sheet extends into the opening and defines an extended portion of the shielding sheet which contacts the electronic component.