Display and illumination device

A display comprising:

• a display panel including a plurality of pixels arranged in a matrix form, the plurality of pixels being driven in response to an image signal for two-dimensional display or three-dimensional display;
• and
• an illumination device illuminating the display panel,
• wherein the illumination device includes:
• a first transparent member and a second transparent member being separated from and facing each other;
• a light source disposed on a side surface of the first transparent member;
• a first electrode disposed on a surface of the first transparent member;
• a second electrode disposed on a surface of the second transparent member;
• a light modulation layer disposed in a gap between the first transparent member and the second transparent member, and exhibiting a scattering property or transparency with respect to light from the light source, depending on a magnitude of an electric field;
• and
• a drive section configured to drive the light modulation layer with use of the first electrode and the second electrode,
• the light modulation layer includes a first region and a second region having response speeds with respect to an electric field, the response speeds being different from each other,
• the first region mainly includes a liquid crystal material,
• the second region mainly includes a polymer material,
• at least one of the first electrode and the second electrode is configured of a plurality of sub-electrodes, and
• in a case where three-dimensional display is performed, while the drive section applies, to a plurality of specific first sub-electrodes in the plurality of sub-electrodes, a voltage allowing the light modulation layer to exhibit the scattering property, the drive section applies, to a plurality of second sub-electrodes other than the plurality of first sub-electrodes in the plurality of sub-electrodes, a voltage allowing the light modulation layer to exhibit transparency, thereby allowing a plurality of linear illumination light rays to be emitted.