Patent attributes
The present invention provides a folding-length-difference compensatory mechanism for the multi-step foldable device. Two bases are connected by three hinge module, such that the matched flexible display can be turned in folded or unfolded states. Each base includes two housings that slide relative to each other, and each hinge module includes a main body and two sliding units. One end of main linkage members and one end of sub-linkage members of sliding units are pivotally connected to the two main pivoting portions of each end of each main body, and the opposite ends of each main linkage member and each sliding member are respectively connected to the housing. The guiding structure is provided on the side and the end between the two housings of the two bases, and/or a support plate body that can be swung is provided on one housing of the two bases.