Patent ID: 8448598

Claim:
A coating device, comprising: a case comprising a bottom wall and an opening end at two opposite ends thereof and defining a reaction cavity; a plurality of receiving plates positioned on an inner surface of the reaction cavity and configured to receive substrates; a reaction module received in the reaction cavity and capable of being rotated in the reaction cavity, the reaction module comprising an outer housing and an inner housing, wherein the outer housing comprises a plurality of electric magnets and a plurality of waveguides, the electric magnets are positioned around the outer housing, a plurality of waveguide channels are defined in the outer housing, one portion of each waveguide is received in a corresponding waveguide channel, another portion of the waveguide extends out of the outer housing, the inner housing is shaped as an annular cylinder and received in the outer housing, a first receiving chamber is defined between the inner and outer housings, a second receiving chamber is defined in the inner housing, a plurality of first spraying holes are defined in the outer housing and communicates the first receiving chamber to the reaction cavity, each waveguide channel communicates with corresponding first spraying holes, a plurality of second spraying holes are defined in the inner housing and communicates the second receiving chamber to the first receiving chamber, and the second spraying holes are arranged in symmetrical rows of four in the inner housing and evenly spaced from each other; and a cover covering the opening end and comprising a plurality of first inlets, a plurality of second inlets, and a plurality of outlets, the first inlets communicating with the first receiving chamber, the second inlets communicating with the second receiving chamber, the outlets communicating with the reaction cavity.