US Patent 11956379 Retractable screen structure and electronic device

A retractable screen structure includes a holder assembly, the holder assembly including a holder and a rotation shaft assembly. The rotation shaft assembly includes a rotation shaft support coupled to a side of the holder and having a shaft hole, a rotation shaft passing through the shaft hole, and a rotation wheel fitted over the rotation shaft. The holder assembly also includes a flexible display screen wound around the rotation wheel. The rotation wheel is driven to rotate when the flexible display screen is expanded or retracted.