In-folding hinge structure having flexible display panel installed thereon

An in-folding type hinge structure having a flexible display panel installed therein, comprising:

• a pair of body portions (10, 12) that face each other;
• a central joint (50) that is disposed at the center between the body portions (10, 12);
• a sliding panel (20) that is disposed in each of the two body portions (10, 12) to slide in each of the two body portions (10, 12);
• and
• a joint portion (40) that is provided in surfaces of the sliding panels (20) facing each other and has a structure in which a plurality of joints are connected,
• wherein the joint portions (40) are rotatably connected to the central joint (50),
• wherein rotation supports (52) each having a rounded contact surface are rotatably disposed on upper side of the central joint (50),
• wherein the rotation supports (52) are rotatably coupled to the central joint (50), and
• wherein each of the body portions (10, 12) has a rounded contact surface (15) which is matched to the rounded contact surface of the rotation supports (52), and the rounded contact surface (15) of the body portions (10, 12) is always in contact with the rounded contact surface of the rotation supports (52) and rotates along the rounded contact surface of the rotation supports (52), and
• wherein the rounded contact surface (15) of the body portions (10, 12) and the rounded contact surface of the rotation supports (52) being in contact with each other have a same rotation center, thereby providing a rotation axis to the body portions (10, 12).