Rotating slide-type mobile communication terminal

1. A rotating slide-type mobile communication terminal, comprising:

a main body, comprising a pair of curved guide rails, the pair of curved guide rails comprising a first guide rail and a second guide rail having different curvatures and lengths from each other and being arranged at both sides in a central portion of the main body;

a slider comprising a liquid crystal display provided in a front surface of the slider to output a video signal, and a pair of coupling bosses provided on a rear surface of the slider so that, if the pair of coupling bosses slide along the pair of curved guide rails, orientation of the slider is changed in a lateral direction of the main body; and

a first coupling member to couple one of the pair of coupling bosses of the slider to the first guide rail of the main body.

2. The rotating slide-type mobile communication terminal as set forth in claim 1 , wherein

the first guide rail is arranged at a first side position based on a longitudinal central line of the main body and curved inwards from an upper end to a lower end of the first guide rail; and the second guide rail is arranged at a second side position opposite the first side position about the longitudinal central line the second guide rail being curved inwards from an upper end to a lower end of the second guide rail and extending lower than the first guide rail, and

the pair of coupling bosses comprises: a first coupling boss configured to slide along the first guide rail; and a second coupling boss configured to slide along the second guide rail.

3. The rotating slide-type mobile communication terminal as set forth in claim 2 , wherein the lower ends of the first and second guide rails are positioned along a same longitudinal axis of the main body, and the upper ends of the first and second guide rails are positioned along a same lateral axis of the main body, and

the first and second coupling bosses are disposed along a same longitudinal axis of the slider, so that, if the slider is closed on the main body, the first and second coupling bosses are placed in the respective lower ends of the first and second guide rails.

4. The rotating slide-type mobile communication terminal as set forth in claim 2 or 3 , wherein a distance between the lower ends of the first and second guide rails is the same as a distance between the upper ends thereof.

5. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a first coupling protrusion provided on the main body at a position adjacent to the first guide rail; and

a first elastic member coupled between a first coupling boss and the first coupling protrusion, so that the slider is semi-automatically opened and closed by the elastic member.

6. The rotating slide-type mobile communication terminal as set forth in claim 5 , wherein the first elastic member comprises a torsion spring, the torsion spring having at a first end thereof a first holding part fitted over the first coupling boss provided on the slider, and at a second end thereof a second holding part fitted over the first coupling protrusions.

7. The rotating slide-type mobile communication terminal as set forth in claim 5 , further comprising:

a second coupling protrusion provided on the main body at a position adjacent to the second guide rail; and

a second elastic member coupled between a second coupling boss and the second coupling protrusion.

8. The rotating slide-type mobile communication terminal as set forth in claim 7 , wherein the second elastic member comprises a torsion spring, the torsion spring comprising a first holding part fitted over the second coupling boss on the slider, and a second holding part fitted over the second coupling protrusion.

9. The rotating slide-type mobile communication terminal as set forth in claim 1 , wherein the first couple member comprising a rivet.

10. The rotating slide-type mobile communication terminal as set forth in claim 1 , wherein the first coupling member comprising a screw.

11. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a sliding support member provided among the pair of curved guide rails, the pair of coupling bosses and the first coupling member, such that the coupling bosses slide smoothly along the respective curved rails.

12. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a keypad provided on a front surface of the main body, the keypad comprising keys to receive alphanumeric or character data.

13. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising: a game play button provided on a front surface of the main body.

14. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a pair of speakers provided in respective upper and lower ends of the slider.

15. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a microphone provided at a medial position in a lower end of the main body to input audio signals; and

a receiver provided at a predetermined position in the slider to output audio signals.

16. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a microphone provided at a medial position in a lower end of the slider to input audio signals; and

a receiver provided at a medial position in an upper end of the slider to output audio signals.

17. The rotating slide-type mobile communication terminal as set forth in claim 1 , further comprising:

a second coupling member to couple the other of the pair of coupling bosses to the second rail.