A housing assembly, comprising: a first housing comprising a first groove; a second housing comprising a second groove, the first housing and the second housing configured to support a flexible display panel; the housing assembly further comprising: a connecting member coupled between the first housing and the second housing, the first housing and the second housing being close to each other by bending the connecting member so that the first housing is stacked onto the second housing; and a coupling member facing the connecting member and coupled between the first housing and the second housing, the coupling member being partially received in the first groove and the second groove and being capable of sliding with respect to the first housing and the second housing; wherein the coupling member comprises: a first connection part; a second connection part; and a linkage part, wherein the first connection part and the second connection part are coupled to two opposite sides of the linkage part; characterised in that the first housing comprises a supporter, the first groove comprises a guiding groove defined in the supporter, and the first connection part comprises a sliding plate which is slidably coupled to the supporter and received in the guiding groove. a first housing comprising a first groove; a second housing comprising a second groove, the first housing and the second housing configured to support a flexible display panel; the housing assembly further comprising: a connecting member coupled between the first housing and the second housing, the first housing and the second housing being close to each other by bending the connecting member so that the first housing is stacked onto the second housing; and a coupling member facing the connecting member and coupled between the first housing and the second housing, the coupling member being partially received in the first groove and the second groove and being capable of sliding with respect to the first housing and the second housing; a connecting member coupled between the first housing and the second housing, the first housing and the second housing being close to each other by bending the connecting member so that the first housing is stacked onto the second housing; and a coupling member facing the connecting member and coupled between the first housing and the second housing, the coupling member being partially received in the first groove and the second groove and being capable of sliding with respect to the first housing and the second housing; wherein the coupling member comprises: a first connection part; a second connection part; and a linkage part, wherein the first connection part and the second connection part are coupled to two opposite sides of the linkage part; characterised in that the first housing comprises a supporter, the first groove comprises a guiding groove defined in the supporter, and the first connection part comprises a sliding plate which is slidably coupled to the supporter and received in the guiding groove. a first connection part; a second connection part; and a linkage part, wherein the first connection part and the second connection part are coupled to two opposite sides of the linkage part; characterised in that the first housing comprises a supporter, the first groove comprises a guiding groove defined in the supporter, and the first connection part comprises a sliding plate which is slidably coupled to the supporter and received in the guiding groove.