Patent ID: 7917993

Claim:
A portable computer, comprising: a first module configured with a first display screen; and a second module rotatably coupled by a hinge unit to the first module and configured with a second display screen and with a controller configured to control the first module and the second module, wherein the controller controls the first display screen and the second display screen to be in a default display mode when the computer is initially powered on or when the default display mode is selected by a user, and the controller controls the first display screen and the second display screen to be in a vertical display mode when the vertical display mode is selected by a user, and the controller controls the first display screen and the second display screen to be in a horizontal display mode when the horizontal display mode is selected by a user, and wherein in the default display mode the first display screen displays a window screen image and the second display screen displays a keyboard image including a plurality of keys in which a language of the keys is selectively changed by user selection, wherein in the vertical display mode each of the first display screen and the second display screen vertically display a window screen image, and wherein in the horizontal display mode each of the first display screen and the second display screen horizontally display a window screen image, wherein the hinge unit includes: a fixed hinge plate fixed to a first unit having a first display module, the fixed hinge plate having a first hinge cylinder, a hinge link having a first hinge shaft rotatably inserted in the first hinge cylinder, the hinge link coupling the first unit with a second unit having a second display module, a movable hinge bracket assembled with the second unit and configured to be rotated about a second hinge shaft, the movable hinge bracket having a guide section for guiding the hinge link that is movable inserted through the movable hinge bracket, and a stopper at a corresponding portion between the hinge link and the guide section of the movable hinge bracket to control the hinge link movement with respect to the movable hinge bracket, wherein the hinge link extends through hinge slots formed through rear ends of the first and second units to couple the first and second units with each other.