Wearable electronic device including module assembly comprising an optical sensor and wireless charging

A wearable device comprising:

• a rear cover;
• a first circuit board including a processor disposed thereon;
• a module assembly disposed between the first circuit board and the rear cover, the module assembly including:
• an optical sensor module including a second circuit board including a first surface facing the rear cover and a second surface opposite to the first surface, a light emitter, and a light receiver, the second circuit board electrically connected with the first circuit board through a first connection member disposed on the second surface of the second circuit board, each of the light emitter and light receiver disposed on the first surface of the second circuit board;
• and
• a wireless charging module physically coupled to the second circuit board via a second connection member and electrically connected with the first circuit board through the first connection member and the second circuit board without a direct electrical connection between the wireless charging module and the first circuit board,
• wherein the wireless charging module is disposed in proximity of the optical sensor module such that the second circuit board is located in an opening area substantially surrounded by a charging coil, and
• wherein a portion of the first connection member is accommodated within the opening area.