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 . <EOS>