The present disclosure provides an attachable external display screen for use on electronic devices. The display screen may be removably mounted onto a surface of an electronic device to provide the user with an additional display screen. The attachable display screen may utilize a dual sliding mechanism that allows for the display screen to slide out to different lengths relative to the screen of the electronic device. The attachable display screen may also utilize a torque hinge to pivotally couple the display screen to a frame that mounts onto the electronic device. The attachable display screen is rotatable about both the horizontal and vertical axes, which allows a user to tilt and adjust the angle of the display screen.