A display panel assembly includes a support, a display panel, a cover plate, and a decorative ring. The support includes a bottom wall and a side wall bent from the bottom wall. A thickness of the side wall is less than a thickness of the bottom wall to form the support. The display panel is fixed to the bottom wall of the support. The cover plate is disposed on the display panel. The decorative ring is disposed on a top end of the side wall of the support away from the bottom wall of the support and joined to a side of the cover plate.