Display device and driving method thereof

A display device comprising:

• a plurality of data signal lines configured to transmit a plurality of analog voltage signals indicating an image to be displayed;
• a plurality of scanning signal lines intersecting the plurality of data signal lines;
• and
• a plurality of pixel circuits arranged in a matrix along the plurality of data signal lines and the plurality of scanning signal lines, wherein
• the display device further includes:
• a data-side drive circuit including a plurality of output terminals respectively corresponding to a plurality sets of data signal line groups that are obtained by dividing the plurality of data signal lines into groups, each of which is a set including a two or more predetermined number of data signal lines and configured to output, in time division from each of the plurality of output terminals, a predetermined number of analog voltage signals to be each transmitted by the predetermined number of data signal lines of a set corresponding to each of the plurality of output terminals,
• a plurality of demultiplexers respectively connected to the plurality of output terminals of the data-side drive circuit and respectively correspond to the plurality sets of data signal line groups,
• a scanning-side drive circuit configured to selectively drive the plurality of scanning signal lines, and
• a display control circuit configured to control the plurality of demultiplexers, the data-side drive circuit, and the scanning-side drive circuit,
• each of the plurality of demultiplexers includes a predetermined number of switching elements respectively corresponding to the predetermined number of data signal lines in a corresponding set, respectively, and each of the predetermined number of switching elements includes a first conduction terminal connected to a corresponding data signal line, a second conduction terminal configured to receive an analog voltage signal output by the data-side drive circuit from an output terminal of the plurality of output terminals connected to a demultiplexer of the plurality of demultiplexers, and a control terminal configured to receive a selection control signal for controlling on and off states,
• each of the plurality of pixel circuits corresponds to any one of the plurality of data signal lines and corresponds to any one of the plurality of scanning signal lines,
• each of the plurality of pixel circuits includes a display element configured to be driven by a current, a holding capacitance configured to hold a voltage for controlling a drive current for the display element, and a drive transistor configured to supply, to the display element, the drive current in accordance with the voltage held in the holding capacitance and is configured such that in a case that a corresponding scanning signal line is in a select state, the drive transistor is in a diode-connected state, and a voltage of a corresponding data signal line is supplied to the holding capacitance via the drive transistor,
• the display control circuit:
• turns only one switching element to an on state among the predetermined number of switching elements in each of the plurality of demultiplexers during a reset period provided, for a scanning signal line of the plurality of scanning signal lines, after a preceding scanning signal line is changed to a non-select state and before the scanning signal line is selected, the preceding scanning signal line being another scanning signal line of the plurality of scanning signal lines selected immediately before the scanning signal line is selected, and
• sequentially turns the predetermined number of switching elements to the on state for a predetermined period after the reset period and before the scanning signal line is changed from the select state to the non-select state such that the only one switching element turns to the on state during a select period for each of the plurality of scanning signal lines and such that among the predetermined number of switching elements any switching element except the only one switching element is in the on state after the reset period and before the scanning signal line is changed to the select state, and
• the data-side drive circuit:
• during the reset period, outputs a voltage for initializing each of the plurality of data signal lines as a reset voltage from each of the plurality of output terminals, and
• after the reset period, outputs the predetermined number of analog voltage signals in time division from each of the plurality of output terminals in accordance with control of the display control circuit that sequentially turns the predetermined number of switching elements to the on state for the predetermined period.