An input sensor, an electronic device comprising such, and a method of manufacturing the same are described. The input sensor may be implemented as part of a mechanical key input. The input sensor includes a substrate having a first substrate portion with a signal pattern unit patterned therein, the signal pattern unit configured to generate a signal according to a touch or proximity of an object, and a second substrate portion having an integrated circuit united disposed thereon, the integrated circuit being electrically connected to the surface pattern unit, and a key support having a seating portion configured to support the substrate. The input sensor, electronic device, and the manufacturing method can be modified without limit.