Abstract: A display device and a manufacturing method thereof are provided. The display device includes a display module with a light emitting surface and a heat dissipating surface opposite to the light emitting surface. A non-transparent heat dissipating layer is affixed to the heat dissipating surface. A plurality of pre-split lines is formed on the non-transparent heat dissipating layer; the pre-split lines define a plurality of adjacent separable areas on the non-transparent heat dissipating layer. The non-transparent heat dissipating layer is affixed to the heat dissipating surface by an adhesive layer. When the display module needs to be repaired, at least one separable area may be torn off to form a window exposed on the heat dissipating surface.