Hinges and foldable display devices

A foldable display device, comprising a flexible display panel and at least one hinge comprising a fixed trestle, a rotation mechanism, and a support mechanism;

• wherein the rotation mechanism comprises two linear sliding modules located respectively on two opposite sides of the fixed trestle, each of the linear sliding modules comprises a connection member and an installation member, the connection member comprises a linear slider and an extension part extending along a direction from the linear slider to the fixed trestle, and the installation member is provided with a linear chute thereon, the linear slider is slidably connected to the linear chute, and the extension part is rotationally connected to the fixed trestle;
• wherein the linear slider comprises a first magnetic area with a first magnetic member;
• the linear chute comprises a second magnetic area with a second magnetic member adjacent to the first magnetic area;
• and the first magnetic member and the second magnetic member have opposite magnetic field directions parallel to a sliding direction of the linear slider;
• and the second magnetic member comprises portions at two sides of the first magnetic member;
• wherein during a movement of the hinge, the linear slider slides within the linear chute, the first and second magnetic members attract in a first portion of the movement, and repel in a second portion of the movement;
• wherein the linear slider comprises a sliding part connected to the extension part, the first magnetic member is fixed on the sliding part;
• the linear chute comprises a chute part disposed on the installation member, the second magnetic member is fixed on the chute part;
• and the sliding part is slidably connected to the chute part;
• wherein the first magnetic member comprises a first bar magnet, the second magnetic member comprises a second bar magnet and a third bar magnet symmetrically disposed on both sides of the chute part and having a same pole direction, and the first bar magnet, the second bar magnet, and the third bar magnet each have an extending direction same with an extending direction of the chute part;
• wherein the at least one linear sliding module comprises two linear sliding modules located respectively on two opposite sides of the fixed trestle;
• wherein the hinge further comprises a support mechanism, the support mechanism comprises a first support member and a second support member, the first support member is fixedly connected to the installation member of one of the linear sliding modules, and the second support member is fixedly connected to the installation member of the other one the linear sliding modules;
• and
• wherein when the hinge in an unfolded state, the first support member and the second support member are configured to be relatively unfolded, the flexible display panel is configured to be unfolded and located on the first support member and the second support member;
• and when the hinge in a folded state, the first support member and the second support member are configured to be relatively folded, the flexible display panel is configured to be folded and located between the first support member and the second support member.