Provided is a display apparatus having a holding structure for an optical sheet capable of preventing wrinkles, bending, and sheet damage to the optical sheet in the display apparatus, and preventing defects such as irregular brightness and reduced brightness.A chassis for holding an optical sheet of a rectangular shape holds the peripheral edge part of the optical sheet at a holding surface of hollow rectangular shape, and has engaging parts to hold the optical sheet provided to stand at the edge part of one side of the holding surface. The holding surface is inclined or has a stepped protuberance formed, whereby the surface of the other region opposite of the end part of the one region on which the engaging parts is provided to stand is closer to the display panel than the surface of the one region of the holding surface within the height range of the engaging part, wherein the one region and the other region are present on the opposite side with respect to an opening of the holding surface.