US Patent 10356922 Middle frame and flexible display device

This disclosure provides a middle frame and a flexible display device. The middle frame comprises a first framework component, a second framework component and a flexible component comprising a first chain link element, a second chain link element, a third chain link element, a fourth chain link element, a flexible element and a plurality of rotors. Under collaboration of the plurality of the rotors, the third chain link element is connected to the first framework component and the third chain link element, the third chain link element is connected to the flexible component, the second chain link element is connected to the second framework component and the fourth chain link element, and the fourth chain link element is connected to the flexible component.