A frame includes a support assembly extending in a first direction, two hemming brackets, and at least two detachable fixing structures. The hemming brackets respectively disposed at both sides of the support assembly in the first direction. Each hemming bracket extends in a second direction different from the first direction. An end of the hemming bracket away from the support assembly is a flanged portion. The hemming bracket is fixed to a corresponding end of the support assembly through at least one detachable fixing structure. One of the hemming bracket and the end of the support assembly has at least one via hole, and each detachable fixing structure passing through a via hole to be fixed to another of the hemming bracket and the end of the support assembly. An outer wall of the detachable fixing structure and a hole wall of the via hole has a gap therebetween.