A scan driving circuit and a display device, the display device including display elements two-dimensionally disposed in a matrix; scanning lines, initialization control lines, and display control lines extending in a first direction; and data lines extending in a second direction different from the first direction. The scan driving circuit includes a shift register portion and a logic circuit portion, and generates scan signals and initialization signals, both based on two or more enable signals, and control signals. The scan driving circuit is configured such that changing the width of a start pulse (and thereby the ratio of a light emitting period to a non-light emitting period) does not affect the scan signals or the initialization signals.