A display device comprising: a display panel; a diffusion plate positioned behind the display panel; a reflecting sheet positioned behind the diffusion plate; a frame configured to be positioned behind the reflecting sheet; a first substrate positioned between the reflecting sheet and the frame; a first row of light assemblies mounted on the first substrate; a second substrate positioned between the reflecting sheet and the frame; a second row of light assemblies mounted on the second substrate; and wherein the reflecting sheet comprises a plurality of holes, and wherein the first row and the second row of light assemblies are inserted in the plurality of holes, and a supporter partially positioned between the diffusion plate and the reflecting sheet so that the diffusion plate and the reflecting sheet are spaced apart from each other, wherein the supporter is positioned between the first and second substrates, wherein the supporter comprises: an elastic portion configured to deform upon deformation of the diffusion plate, wherein the elastic portion includes a top portion and a bottom portion formed by first and second ends of the elastic portion; a supporting portion extending from the top portion of the elastic portion and extending toward the diffusion plate, wherein a tip of the supporting portion is configured to support the diffusion plate; and a base end portion connecting the first and second ends of the elastic portion, and wherein the top portion of the elastic portion is elongated and spaced apart from the base end portion. a display panel; a diffusion plate positioned behind the display panel; a reflecting sheet positioned behind the diffusion plate; a frame configured to be positioned behind the reflecting sheet; a first substrate positioned between the reflecting sheet and the frame; a first row of light assemblies mounted on the first substrate; a second substrate positioned between the reflecting sheet and the frame; a second row of light assemblies mounted on the second substrate; and wherein the reflecting sheet comprises a plurality of holes, and wherein the first row and the second row of light assemblies are inserted in the plurality of holes, and a supporter partially positioned between the diffusion plate and the reflecting sheet so that the diffusion plate and the reflecting sheet are spaced apart from each other, wherein the supporter is positioned between the first and second substrates, wherein the supporter comprises: an elastic portion configured to deform upon deformation of the diffusion plate, wherein the elastic portion includes a top portion and a bottom portion formed by first and second ends of the elastic portion; a supporting portion extending from the top portion of the elastic portion and extending toward the diffusion plate, wherein a tip of the supporting portion is configured to support the diffusion plate; and a base end portion connecting the first and second ends of the elastic portion, and an elastic portion configured to deform upon deformation of the diffusion plate, wherein the elastic portion includes a top portion and a bottom portion formed by first and second ends of the elastic portion; a supporting portion extending from the top portion of the elastic portion and extending toward the diffusion plate, wherein a tip of the supporting portion is configured to support the diffusion plate; and a base end portion connecting the first and second ends of the elastic portion, and wherein the top portion of the elastic portion is elongated and spaced apart from the base end portion.