Projection-type display device

A projection-type display device comprising:

• a reflection-type spatial optical modulation unit that includes a plurality of movable reflection elements an inclined state of which can be switched to either one of a first inclined state and a second inclined state;
• a light source unit that includes a plurality of a light-emitting elements;
• and
• a control unit that controls the reflection-type spatial optical modulation unit and the light source unit such that light constituting an image in accordance with a video signal to be input is projected, wherein
• the control unit
• divides respective frames of the image into a display period that is a period when at least one element of the plurality of the light-emitting elements is caused to emit light, and a non-display period that is a period when none of the plurality of the light-emitting elements is caused to emit light,
• further divides, among a plurality of sub-frames that is a plurality of periods and constitutes the frame, each of a plurality of display sub-frames that are the sub-frames included in the display period into a plurality of division display sub-frames,
• controls the light source unit such that the at least one light-emitting element of the plurality of the light-emitting elements emits light for each display sub-frame, and
• controls the reflection-type spatial optical modulation unit such that the inclined state of each of the plurality of movable reflection elements is set for each division display sub-frame.