Support assembly and display device

A support assembly for supporting a flexible display panel, the support assembly comprising:

• a rolling shaft, wherein an axis of the rolling shaft extends in a first direction;
• at least one position-limiting portion, arranged at at least one end of the rolling shaft in the first direction, wherein the at least one position-limiting portion comprises at least two position-limiting teeth, and a position-limiting space is formed between adjacent two of the at least two position-limiting teeth;
• and
• a support plate, connected to the rolling shaft, wherein the support plate comprises a support portion for supporting the flexible display panel, the support portion comprises two side edges opposite to each other in the first direction, and the support plate further comprises a positioning portion protruding from at least one of the side edges of the support portion;
• wherein the support assembly comprises a first state and a second state;
• in the first state, the support plate is in a flattened state, and one end of the support plate in a second direction is connected to the rolling shaft;
• in the second state, the support plate curls up around the rolling shaft, and the positioning portion is confined in the position-limiting space.