Electronic device and method for determining touch coordinate thereof

A portable communication device comprising:

• a display cover;
• a display attached to a first surface of the display cover;
• a touch sensor disposed under the display cover and over the display, and configured to sense proximity of, or contact by, an external object with respect to a second surface of the display cover opposite to the first surface;
• a touch integrated circuit (IC) electrically connected to the touch sensor and configured to generate, based on the proximity and the contact, coordinate information with respect to the display;
• a fingerprint sensor including an active area configured to sense biometric pattern of the external object, the fingerprint sensor disposed under the display cover adjacent to the touch sensor such that an inactive area is formed between the active area and the touch sensor;
• a fingerprint IC electrically connected to the fingerprint sensor;
• and
• a processor electrically connected to the touch IC and the fingerprint IC and configured to, if an input by the external object is inputted via the inactive area located between the active area and the touch sensor, determine a coordinate corresponding to the input with respect to the display using the touch sensor or the fingerprint sensor.

A touch coordinate sensing method of an device, the method comprising:

• activating a touch sensor and a fingerprint sensor included in the device, wherein the fingerprint sensor including an active area configured to sense biometric pattern of an external object, and wherein the fingerprint sensor disposed under a display cover adjacent to the touch sensor such that an inactive area is formed between the active area and the touch sensor;
• sensing an input by the external object, using the touch sensor and the fingerprint sensor;
• and
• if the input by the external object is inputted via the inactive area located between the active area and the touch sensor, determine a coordinate corresponding to the input with respect to the display cover using the touch sensor or the fingerprint sensor.