Patent ID: 8490121

Claim:
A slim-type optical disc drive, comprising: a casing, wherein a first circuit board is disposed within the casing; and a tray selectively accommodated within the casing or withdrawn from the casing, wherein a second circuit board is disposed on the tray, a spring switch is disposed on the second circuit board, a first end of the spring switch is fixed on the second circuit board, a resistor is connected between the first end of the spring switch and a first power source, the first end of the spring switch is served as an output terminal of the spring switch, and a second end of the spring switch is extended outside the second circuit board, wherein in a tray-out status, the second end of the spring switch is not contacted with any object, so that a first status signal is generated from the output terminal of the spring switch, wherein in a tray-in status, the second end of the spring switch is contacted with a conducting zone of a second power source, so that a second status signal is generated from the output terminal of the spring switch.