Magnetron sputtering device, magnetron sputtering apparatus and magnetron sputtering method

1. A magnetron sputtering device, comprising:

a target material bearing portion, configured to bear a target material thereon;

a magnet bearing section, configured to bear a magnet thereon and to be capable of driving the magnet to perform reciprocating motion along a predetermined path with respect to the target material bearing portion; and

a limit sensor, configured to determine an end-point position of the predetermined path along which the magnet performs reciprocating motion;

wherein the end-point position determined by the limit sensor can be adjusted along the predetermined path during a working procedure of the magnetron sputtering device; and

the limit sensor is set to be movable so as to change the position of the limit sensor with respect to the predetermined path.

2. The magnetron sputtering device according to claim 1 , wherein an adjusted length value of the end-point position determined by the limit sensor along the predetermined path during the working procedure of the magnetron sputtering device is L/2 where L is a side length of the magnet in an extending direction of the predetermined path.

3. The magnetron sputtering device according to claim 1 , further comprising:

a first driving unit, configured to provide a driving force for the movement of the limit sensor; and

a connecting part, connected with the first driving unit and the limit sensor.

4. The magnetron sputtering device according to claim 3 , wherein the first driving unit comprises a rotating motor or a gear, and the connecting part comprises a lead screw or a rack correspondingly, and

the limit sensor is provided on the lead screw or the rack.

5. The magnetron sputtering device according to claim 3 , wherein the first driving unit comprises a linear motor or an air cylinder or a hydraulic cylinder of variable stroke, and the connecting part comprises a telescopic rod, and the limit sensor is disposed on the telescopic rod.

6. The magnetron sputtering device according to claim 1 , further comprising a deceleration sensor,

wherein the deceleration sensor is disposed on the predetermined path and is located before the end-point position.

7. The magnetron sputtering device according to claim 1 , wherein the limit sensor comprises a displacement sensor and a scale provided in cooperation with the displacement sensor, and the displacement sensor can perform reciprocating motion along the scale.

8. The magnetron sputtering device according to claim 7 , wherein the scale is provided with a scribed line corresponding to the end-point position of the predetermined path along which the magnet performs reciprocating motion.

9. The magnetron sputtering device according to claim 8 , wherein the scale is further provided with a scribed line corresponding to a deceleration position.

10. The magnetron sputtering device according to claim 3 , further comprising a control module, wherein

the control module is configured to:

receive and analyze a signal of a consumption amount of the target material or send an instruction to the limit sensor according to a predetermined working time period, to change the end-point position determined by the limit sensor, and

receive and analyze a signal fed back by the limit sensor, and send an instruction to the magnet bearing section.

11. A magnetron sputtering apparatus, comprising:

a reaction chamber, and

a magnetron sputtering device disposed in the reaction chamber according to claim 1 .

12. A magnetron sputtering method, comprising:

receiving and analyzing a signal of a consumption amount of a target material or sending an instruction to a limit sensor according to a predetermined working time period, moving the limit sensor to change an end-point position of a predetermined path along which a magnet performs reciprocating motion through the limit sensor by a control module; and

receiving and analyzing a signal fed back by the limit sensor, and then sending an instruction to a magnet bearing section, to control the magnet bearing section to drive the magnet to perform reciprocating motion along the predetermined path with respect to the target material by the control module;

wherein the end-point position determined by the limit sensor can be adjusted along the predetermined path during a working procedure of the magnetron sputtering device.