Patent ID: 9650709
Date: 2017-05-16
CPC Classifications: C23C

Claim:
1. A magnetic device for adsorbing a metal mask in a vapor deposition device, the magnetic device comprising: a metal plate; an electromagnet array comprising a plurality of electromagnets, each of the electromagnets being inserted in the metal plate; a power supply module configured to supply a current; a control module configured to, when adsorbing the metal mask during a vapor deposition process, control, by sending a first control signal to the power supply module, the power supply module to supply a direct current to all or some of the plurality of electromagnets and control a direction and a size of the direct current, wherein the control module is further configured to, after the vapor deposition, control, by sending a second control signal to the power supply module, the power supply module to repeatedly supply an alternating current to all or some of the plurality of electromagnets until the plurality of electromagnets are demagnetized, the control module and the power supply module are inserted in a lateral side of the metal plate, and during vapor deposition, the electromagnet array, the control module and the power supply module are rotatable along with the metal plate.