Patent ID: 8509862

Claim:
A rotation hinge apparatus of a portable terminal including a body housing, a folder including a liquid crystal display section and rotated in the body housing about first and second axes, and a connection member rotatably connecting the folder about the first and second hinge axes, the rotation hinge apparatus comprising: a base member; a rotation member; first and second guide pins provided in the rotation member; first and second guide sections provided in the base member, the first and second guide sections engaged with the first and second guide pins to locate the liquid crystal display section of the folder at the center of the connection member by guiding linear movement of the first guide pin when the rotation member is rotated about the second hinge axis in the clockwise or counter-clockwise direction and by moving the second guide pin in an inclined manner and then in a curved manner and guiding and moving the second hinge axis in an inclined manner and then in a curved manner; and at least one force supplying means provided between the first and second guide sections and providing a force for moving the first and second guide pins linearly or in an inclined manner and then in a curved manner, wherein the rotation member is rotatable in the clockwise direction to be located transversely and the rotation member is rotatable in the counterclockwise direction to be located transversely.