Light source device and stereoscopic display

A stereoscopic display comprising:

• a display section displaying an image;
• a light source device emitting light for image display to the display section, wherein
• the light source device includes
• a light guide plate having a first internal reflection plane and a second internal reflection plane which face each other,
• a first light source applying first illumination light from a side surface of the light guide plate into an interior thereof,
• a second light source disposed to face the second internal reflection plane of the light guide plate, and applying second illumination light,
• a plurality of total-reflection regions provided in the second internal reflection plane, the plurality of total reflection regions allowing the first illumination light to be reflected in a manner of total internal-reflection whereas allowing the second illumination light to pass therethrough,
• a plurality of scattering regions provided in the second internal reflection plane, and allowing the first illumination light to be scattered, and
• a reflective member disposed in a position corresponding to each of the plurality of scattering regions between the second internal reflection plane and the second light source, and reflecting the first illumination light having passed through a scattering region of the plurality of scattering regions, toward the first internal reflection plane, and
• wherein the display section selectively displays one of an image based on three-dimensional image data and an image based on two-dimensional image data by switching;
• and
• a control circuit configured to:
• control the first light source to be in a light-on state in the case where an image based on three-dimensional image data is displayed on the display section, and to be in a light-off state or in a light-on state in the case where an image based on two-dimensional image data is displayed on the display section, and
• control the second light source to be in a light-off state in the case where the image based on the three-dimensional image data is displayed on the display section, and to be in a light-on state in the case where the image based on the two-dimensional image data is displayed on the display section.