Patent ID: 8018714

Claim:
A portable electronic device, comprising: a first body portion; a second body portion; a sliding module connecting the first body portion and the second body portion, the sliding module configured to guide the second body portion to slide along a surface of the first body portion from a first position to a second position; and a rotating module connecting the first body portion and the second body portion; wherein the rotating module is configured to automatically rotate the second body portion from the second position to a third position in which the second body portion is tilted up at a first angle with respect to the first body portion, wherein the rotating module comprises a cam structure connected to the second body portion and operable with a compressed energy storage device such that a release of energy from the energy storage device is capable of moving the cam structure to drive the second body portion to rotate from the second position to the third position; and wherein said rotating module is further configured to allow a user to rotate the second body portion from the third position to a fourth position in which the second body portion is tilted up at a second angle with respect to the first body portion, the second angle being greater than the first angle.