An image display apparatus, comprising: a display panel; a back frame that includes a flat portion having a substantially flat surface smaller than an active area of the display panel, and a side wall that rises from an outer edge of the flat portion and reaches an outer edge of the active area in a front view; a plurality of light sources that are arranged in rows and columns at substantially equal intervals in the flat portion; a plurality of support pins that are pillar-shaped and arranged in rows and columns at substantially equal intervals in positions in the flat portion and away from the plurality of light sources; a diffuser panel that is plate-shaped, is supported by tips of the plurality of support pins and the back frame, and diffusely emits light from the plurality of light sources toward the display panel; and a luminance-equalizing sheet that is sheet-shaped, is supported at intermediate positions on the plurality of support pins, between the diffuser panel and the back frame, has an outer edge that substantially overlaps the outer edge of the active area, and transmits part of the light from the plurality of light sources toward the diffuser panel, wherein the luminance-equalizing sheet protrudes in a curved manner toward the side wall between the diffuser panel and the side wall such that distance between the luminance-equalizing sheet and the back frame gradually decreases from the outer edge of the flat portion to an outer edge of the side wall, wherein the plurality of support pins are on lines each of which passes through equidistant points between horizontally or vertically adjacent two of the plurality of light sources, the image display apparatus further comprises a set of at least two auxiliary support pins that are pillar-shaped and support the luminance-equalizing sheet between the back frame and the diffuser panel in positions that are adjacent to each other and located on the same line among the lines and at which the set of at least two auxiliary support pins are closer to the outer edge of the flat portion than the plurality of support pins and the plurality of light sources. a display panel; a back frame that includes a flat portion having a substantially flat surface smaller than an active area of the display panel, and a side wall that rises from an outer edge of the flat portion and reaches an outer edge of the active area in a front view; a plurality of light sources that are arranged in rows and columns at substantially equal intervals in the flat portion; a plurality of support pins that are pillar-shaped and arranged in rows and columns at substantially equal intervals in positions in the flat portion and away from the plurality of light sources; a diffuser panel that is plate-shaped, is supported by tips of the plurality of support pins and the back frame, and diffusely emits light from the plurality of light sources toward the display panel; and a luminance-equalizing sheet that is sheet-shaped, is supported at intermediate positions on the plurality of support pins, between the diffuser panel and the back frame, has an outer edge that substantially overlaps the outer edge of the active area, and transmits part of the light from the plurality of light sources toward the diffuser panel, wherein the luminance-equalizing sheet protrudes in a curved manner toward the side wall between the diffuser panel and the side wall such that distance between the luminance-equalizing sheet and the back frame gradually decreases from the outer edge of the flat portion to an outer edge of the side wall, wherein the plurality of support pins are on lines each of which passes through equidistant points between horizontally or vertically adjacent two of the plurality of light sources, the image display apparatus further comprises a set of at least two auxiliary support pins that are pillar-shaped and support the luminance-equalizing sheet between the back frame and the diffuser panel in positions that are adjacent to each other and located on the same line among the lines and at which the set of at least two auxiliary support pins are closer to the outer edge of the flat portion than the plurality of support pins and the plurality of light sources.