Patent ID: 8140135

Claim:
A handheld electronic device, comprising: a first body; a second body, wherein the first body is stacked on the second body, wherein a side of the second body facing the first body has a step; a sliding block, located between the first body and the second body, and slidably coupled to the first body; a linkage mechanism, connected between the sliding block and the second body to drive the sliding block moving relative to the second body; and a first elastic member, disposed between the first body and the sliding block, wherein for receiving a spread state of the handheld electronic device, the first body and the second body are adapted to spread along a direction, the first body is adapted to enter a lower place of the step, such that a top surface of the first body and a top surface of the second body are approximately coplanar, and the first elastic member is adapted to store an elastic energy, and for receiving a closed state of the handheld electronic device, the first body and the second body are adapted to spread along the same direction for a further distance, wherein the first elastic member releases the stored elastic energy for retracting the first body and the second body.