Illumination device and display device

A display device comprising:

• a display panel;
• and
• an illumination device which illuminates the display panel, wherein
• the illumination device comprises:
• a light source unit which emits light toward the display panel;
• a modulation element located between the light source unit and the display panel, the modulation element comprising a modulation portion which modulates incident light, and a non-modulation portion which is adjacent to the modulation portion;
• and
• a liquid crystal element located between the light source unit and the modulation element, the liquid crystal element forming a lens between the light source unit and the modulation portion, wherein
• the modulation portion is smaller than the non-modulation portion,
• the modulation element comprises a third substrate comprising a plurality of third control electrodes, a fourth substrate comprising a fourth control electrode, and a second liquid crystal layer held between the third substrate and the fourth substrate,
• the second liquid crystal layer includes liquid crystal molecules twisted-aligned in a state where no electric field is formed between the third control electrodes and the fourth control electrode,
• the liquid crystal molecules in the non-modulation portion are vertically aligned by the electric field,
• the liquid crystal molecules in the modulation portion are twisted-aligned, and
• the modulation portion is arranged at a position where light is converged by the lens.