Electronic device including flexible printed circuit board and operating method thereof

An operating method of a foldable electronic device, the operating method comprising:

• identifying an impedance of a sensing pattern part provided in a bending portion of a flexible printed circuit board (FPCB) in response to a folding operation of the foldable electronic device;
• identifying a folding angle of the foldable electronic device based on the impedance of the sensing pattern part;
• and
• changing an operating mode of the foldable electronic device based on the folding angle,
• wherein the sensing pattern part comprises a first pattern forming a first electrical path extending in a first direction perpendicular to a surface of the FPCB and a second pattern forming a second electrical path extending in a second direction parallel with the surface of the FPCB, and
• wherein the identifying the impedance comprises detecting a first impedance of the first pattern and a second impedance of the second pattern.

A foldable electronic device comprising:

• a display comprising a first area and a second area;
• a first housing on a rear surface of the first area;
• a second housing on a rear surface of the second area;
• a hinge structure foldably connecting the first housing and the second housing to each other on a folding axis;
• a flexible printed circuit board (FPCB) extending across the folding axis from a first space between the first housing and the display to a second space between the second housing and the display;
• a sensor configured to identify an impedance in the FPCB;
• and
• a processor configured to identify a folding angle based on the impedance,
• wherein the hinge structure forms a hinge space between the first space and the second space,
• wherein the FPCB comprises:
• a central portion in the hinge space;
• a first bending portion connected to a first end of the central portion;
• a second bending portion connected to a second end of the central portion;
• and
• a sensing pattern part provided in the first bending portion, and
• wherein the sensing pattern part comprises:
• a first pattern extending in a first direction perpendicular to a surface of the FPCB;
• and
• a second pattern extending in a second direction parallel with the surface of the FPCB.