A semiconductor device includes: an LCD controller configured to output a plurality of image signals in parallel; a plurality of signal lines respectively corresponding to the plurality of image signals to be outputted in parallel; a plurality of terminal portions respectively connected to the plurality of signal lines; and delay circuits configured to delay a plurality of image signals, which are divided into a plurality of groups to the extent that the sum of each value of a current flowing through each signal line does not exceed a predetermined current value and outputted from a plurality of terminal portions, by a predetermined delay time from each other among the plurality of groups.