Planar illumination apparatus

A planar illumination apparatus comprising:

• a frame including a bottom surface that is curved as viewed in a cross section, and a side wall that is provided in a standing manner so as to surround a circumference of the bottom surface;
• a light guide plate that is housed in the frame, that is curved along the bottom surface as viewed in the cross section, and that includes an emission surface for emitting light;
• and
• a plurality of optical sheets that are arranged along the emission surface of the light guide plate and that overlap with one another as viewed in a plan view, wherein
• an end portion of at least one of the plurality of optical sheets is fixed to an upper end surface of the side wall of the frame via a fixing member, wherein
• the frame is configured such that a thickness between an upper end surface and a lower end surface of the side wall is thinner than a thickness of the light guide plate, and
• the one of the optical sheets is an optical sheet located closest to the emission surface.

A planar illumination apparatus comprising:

• a frame including a bottom surface that is curved as viewed in a cross section, and a side wall that is provided in a standing manner so as to surround a circumference of the bottom surface;
• a light guide plate that is housed in the frame, that is curved along the bottom surface as viewed in the cross section, and that includes an emission surface for emitting light;
• and
• a plurality of optical sheets that are arranged along the emission surface of the light guide plate and that overlap with one another as viewed in a plan view, wherein
• an end portion of at least one of the plurality of optical sheets is fixed to an upper end surface of the side wall of the frame via a fixing member, wherein
• the frame includes a tapered surface that is inclined in a direction in which the upper end surface of the side wall is separated from the emission surface of the light guide plate,
• the one of the optical sheets is an optical sheet located closest to the emission surface, and
• an end portion of the optical sheet is fixed to the tapered surface.

A planar illumination apparatus comprising:

• a frame including a bottom surface that is curved as viewed in a cross section, and a side wall that is provided in a standing manner so as to surround a circumference of the bottom surface;
• a light guide plate that is housed in the frame, that is curved along the bottom surface as viewed in the cross section, and that includes an emission surface for emitting light;
• a plurality of optical sheets that are arranged along the emission surface of the light guide plate and that overlap with one another as viewed in a plan view, wherein
• an end portion of at least one of the plurality of optical sheets is fixed to an upper end surface of the side wall of the frame via a fixing member;
• and a light shielding sheet that defines an effective region of the emission surface, wherein the light shielding sheet is arranged so as to cover at least the end portion fixed to the frame, and
• wherein end portions of the optical sheets other than the optical sheet located farthest are arranged in a notch portion provided on an inner peripheral side of the side wall.