Light-emitting unit, display apparatus, and lighting apparatus

A display apparatus comprising:

• a light-emitting unit configured to output illumination light;
• and
• a display panel configured to display an image based on the illumination light, wherein
• the display panel is on the light-emitting unit, and
• the light-emitting unit comprises:
• a plurality of side-emission type light-emitting devices on a mounting surface;
• a light guide plate at a position opposed to each of the plurality of side-emission type light-emitting devices, wherein
• the light guide plate comprises:
• a bottom surface,
• a top surface, and
• uneven layers on the bottom surface and the top surface,
• the uneven layers are configured to control an entry of light into the light guide plate and an exit of the light from the light guide plate,
• an uneven layer of the uneven layers comprises a plurality of protrusions, and
• the plurality of protrusions is concentric;
• and
• a reflective structure fixed to at least one of the mounting surface or the bottom surface,
• wherein the reflective structure comprises a reflective section configured to reflect output light from each of the plurality of side-emission type light-emitting devices toward the bottom surface.

A lighting apparatus comprising:

• a light-emitting unit configured to output illumination light, wherein the light-emitting unit comprises:
• a plurality of side-emission type light-emitting devices on a mounting surface;
• a light guide plate at a position opposed to each of the plurality of side-emission type light-emitting devices, wherein
• the light guide plate comprises:
• a bottom surface,
• a top surface, and
• uneven layers on the bottom surface and the top surface,
• the uneven layers are configured to control an entry of light into the light guide plate and an exit of the light from the light guide plate,
• an uneven layer of the uneven layers comprises a plurality of protrusions, and
• the plurality of protrusions is concentric;
• and
• a reflective structure fixed to at least one of the mounting surface or the bottom surface,
• wherein the reflective structure comprises a reflective section configured to reflect output light from each of the plurality of side-emission type light-emitting devices toward the bottom surface.