Portable terminal and a component mounting method

A portable terminal comprising:

• a circuit board comprising a conductive pattern inserted into the circuit board;
• a signal generation or power supply element being electrically connected with the conductive pattern;
• a non-conductive adhesion layer attached onto the circuit board that overlaps at least part of the conductive pattern when viewed from above the circuit board;
• a first structure arranged on the adhesion layer that overlaps at least part of the adhesion layer when viewed from above the circuit board, wherein the first structure includes a metal material and is insulated from the circuit board by the non-conductive adhesion layer, and wherein the first structure has an annular shape;
• a second structure arranged above the first structure that overlaps at least part of the first structure when viewed from above the circuit board, and comprises a bottom surface comprising metal;
• a metal layer inserted between the first structure and the bottom surface of the second structure so as to couple therebetween;
• and
• an optical sensor disposed on the circuit board and enclosed by the annular-shaped first structure,
• wherein the second structure comprises:
• an annular metal bracket;
• and
• a light transmission sheet arranged on a penetrating portion of the metal bracket.