Dimming device and display device

A display device comprising:

• a transparent display;
• and
• a dimming device that is disposed on a back surface side of the transparent display and is capable of controlling light transmittance, wherein
• the dimming device includes a dimming panel,
• the dimming panel includes:
• a plurality of row electrodes extending in a first direction;
• a plurality of column electrodes extending in a second direction intersecting the first direction;
• a dimming layer having a plurality of dimming regions defined in a matrix form by the plurality of row electrodes and the plurality of column electrodes;
• and
• a controller that performs control to apply any of a plurality of pattern voltages having predetermined voltage waveforms to each of the plurality of row electrodes and the plurality of column electrodes according to a gradation of each of the plurality of dimming regions, and
• the controller selects a pattern voltage to be applied to each of the plurality of row electrodes and the plurality of column electrodes according to a gradation of each of the plurality of dimming regions in each of a plurality of frame periods that are periods different from each other and constitute a repetition period indicating a period serving as a unit, in units of which repetition for controlling dimming is performed.