US Patent 6889404 Height-adjustable hinge for a liquid crystal display

A hinge includes a bracket, two fixing seats pivotally connected to the bracket, at least one base, at least one first arm pivotally connected between the at least one base and the at least one fixing seat and at least one second arm pivotally connected between the at least one base and the at least one fixing seat. At least one spring is provided between the at least one second arm and the at least one base such that when both the at least one first and second arms are pivoted relative to the at least one base, the required recovery force is provided to facilitate the upward movement of the bracket relative to the at least one base.