The
display device includes: a display panel including a plurality of
signal lines (DL) and a plurality of scanning lines (SL) crossing each other at right angles, and an optical element (OEL) arranged near intersections of the plurality of
signal lines and scanning lines A plurality of display pixels (EM); a
signal drive circuit (130A-G), with a plurality of
current generation circuits (ILA, ILB, ISA, ISB, ISC-F, PXA-D); the
current generation circuit includes a drive
current generation circuit ( 22A-D), for generating a
driving current according to multiple levels of current based on the value of the display signal provided to each scanning line; the scanning
driving circuit (120A, 120B), for sequentially applying the scanning signal to each signal line, In order to set the selection state of each display pixel in each line period; the
gradation current generating circuit (21A-D) is used for generating a plurality of
gradation currents according to each display signal bit based at least on a constant predetermined
reference current.