Patent ID: 7158817

Claim:
A portable terminal comprising: a first panel at least having a display connected by a hinge unit to a second panel at least having a keyboard, wherein a part of said hinge unit is attached on said first panel and another part of said hinge unit is attached on said second panel; wherein said hinge unit has both a rotating mechanism that rotates around a center axis of said hinge unit and a sliding mechanism that slides in the longitudinal direction along the center axis of said hinge unit; wherein at least 10 numerical keys of the keyboard of said second panel are exposed by sliding said first and said second panels with respect to each other, said at least 10 numerical keys being on a surface place of said second panel exposed from said first panel by said sliding; and wherein at least one of said at least 10 numerical keys acts as at least one of alphabet character keys, mark keys, and function keys by opening said first and said second panels by rotating said hinge unit.