Disclosed is an antenna device arranged inside a display module of an electronic device with a conductive portion. At least one detector detects the beams having passed through the object and generates detection data. A gate electrode is arranged so as to be opposed to the semiconductor layer on at least the third surface, the fourth surface, and the fifth surface via a gate insulation layer. When the ceramic bar is depressed against the lapping surface, a specific portion of the ceramic bar is deformed or strongly deformed through the elastic member by these actuators to thereby make it possible to perform the lapping in response to each element. The charging outlets are switched off if the total charging current exceeds the sum.