Planar light source apparatus, display apparatus, and method of manufacturing planar light source apparatus

A display apparatus comprising:

• planar light source apparatus;
• and
• a display panel that converts planar light emitted from said planar light source apparatus into image light, wherein
• said planar light source apparatus, includes a light source, a holding substrate that holds said light source at a main surface, and a light-distribution control element that is disposed at said main surface of said holding substrate so as to cover said light source, and changes light, distribution of light rays emitted from said light source,
• said light-distribution control element includes a diffusion part that is provided at at least one surface of a plurality of surfaces structuring an outer shape of said light-distribution control element,
• said diffusion part diffuses said light rays incident on said at least one surface of said light-distribution control element from one direction in a plurality of traveling directions, and
• said at least one surface where said diffusion part is provided is a surface different from an installation surface capable of abutting on said main surface of said holding substrate.

A method of manufacturing a planar light source apparatus including a light source, a holding substrate that holds said light source at a main surface, and a light-distribution control element that is disposed at said main surface of said holding substrate so as to cover said light source, and changes light distribution of light rays emitted from said light source, the method, comprising:

• preparing said light-distribution control element, wherein
• said light-distribution control element includes a diffusion part that is provided at at least one surface of a plurality of surfaces structuring an outer shape of said light-distribution control element,
• said diffusion part diffuses said light rays incident on said at least one surface of said light-distribution control element from one direction in a plurality of traveling directions,
• said preparing said light-distribution control element includes forming said diffusion part by double extrusion modeling at said at least one surface of said plurality of surfaces structuring said outer shape of said light-distribution control element, and
• said at least one surface where said diffusion part is formed is a surface different from an installation surface capable of abutting on said main surface of said holding substrate.