A back cover for panel module is disclosed and includes a back cover body and a plurality of enhancing parts. The back cover body has a plurality of fixing portions. The perpendicular distance from the fixing portion to a neighboring long edge of the back cover body is about one-third of a length of a wide edge of the back cover body; the perpendicular distance from the fixing part to a neighboring wide edge of the back cover body is about one-third of a length of a long edge of the back cover body. Each enhancing part has two ends which are fixed at one of the fixing portions and a neighboring corner of the back cover body respectively. Thereby, when the flat panel display is increased in size and thinned, the enhancing parts still can effectively improve the structural strength and anti-bending ability of the back cover body.

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