PLASMA SYSTEM

A plasma system comprises a first electrode which connecting to a power generator and a second electrode which is grounded and disposed corresponding to the first electrode, and a spacing between the first electrode and the second electrode. A conveying device transmits a substrate of non-conductive material into and through the spacing without touching the first electrode or the second electrode. A first gas-import device is positioned closed to the first electrode and comprises a plurality of first gas-import sections. A second gas-import device is positioned closed to the second electrode. A working gas imported into the spacing between the first electrode and the second electrode is stimulated by the power generator, and plasma is generated simultaneously on both sides of the substrate.

CROSS REFERENCE TO RELATED APPLICATION

This application claims the benefit of Taiwan application Serial No. 105132096, filed Oct. 4, 2016, the disclosure of which is incorporated by reference herein in its entirety.

TECHNICAL FIELD

The disclosure relates in general to a plasma system, and more particularly a plasma system which is applicable to treat different sizes of substrates and which can treat simultaneously both sides of a substrate.

BACKGROUND

It is known that various types of plasma systems are used to apply plasma treatment such as thin-film coating onto various substrates. Because the substrate is supported by a stage which is electrically connected with ground potential, continuous plasma processing of both sides of a substrate simultaneously can't be achieved.

SUMMARY

The disclosure is directed to a plasma system which is applicable to treat different sizes of substrates and which can treat simultaneously both sides of a substrate.

According to one embodiment of the disclosure, a plasma system, comprising a first electrode, a second electrode, a conveying device, a first gas-import device, and a second gas-import device. The second electrode is oppositely disposing and having a spacing with respect to the first electrode. The conveying device transmits a substrate passing through the spacing without contacting either the first electrode or the second electrode. The first gas-import device being positioned closer to the first electrode than to the spacing, and the first gas-import device comprises a plurality of first gas-import sections which each of the first gas-import section comprises a first gas-inlet and a first gas-outlet. The second gas-import device being positioned closer to the second electrode than to the spacing. The first gas-outlet of the first gas-import device faces and is communicative to the first electrode. The substrate is made of non-conductive material, the first electrode is connected to a power generator and the second electrode is electrically connected with ground potential. A working gas imported into the spacing between the first electrode and the second electrode is stimulated by the power generator, and plasma is generated simultaneously on both sides of the substrate.

DETAILED DESCRIPTION

A number of embodiments are disclosed below with accompanying drawings for elaborating the disclosure. However, the embodiments are for exemplary and explanatory descriptions only, not for limiting the scope of protection of the disclosure.

Refer toFIGS. 1 and 2.FIG. 1andFIG. 2are schematic diagrams of a plasma system100according to an embodiment. The plasma system100comprises a first electrode10, a second electrode20, a conveying device30, a first gas-import device40and a second gas-import device50.

In an embodiment, the first electrode10and the second electrode20are encapsulated in dielectric material such as dielectric ceramics. The second electrode20is disposed corresponding to the first electrode10and therefore a spacing G being formed between the first electrode10and the second electrode20. The first electrode10is connected to a power generator60and the second electrode20is electrically connected with ground potential70and vice versa.

As indicated inFIG. 1, the first gas-import device40is positioned closer to the first electrode10than to the spacing G, and the first gas-import device40comprises a plurality of first gas-import sections41which each of the first gas-import section41comprises a first gas-inlet42and a first gas-outlet43. Each of the first gas-outlet43of the first gas-import device40faces and is communicative to the first electrode40. InFIG. 1, the first gas-import device40comprises two first gas-import sections41for example. Each of the first gas-import sections41comprises a first distributor44and a first rectifier45positioned between the first gas-inlet42and the first gas-outlet43. The first distributor44is communicative to both the first gas-inlet42and the first rectifier45, and the first rectifier45is positioned between the first distributor44and the first gas-outlet43. The first gas-outlet43faces and is communicative to the first electrode20. In an embodiment, the first distributor44comprises a hollow pipe, and the hollow pipe includes a first orifice-inlet441communicative to the first gas-inlet42and a plurality of first orifice-outlets442facing the first rectifier45. The first rectifier45comprises at least one first perforated plate451including a plurality of holes452communicative to the first gas-outlet43. InFIG. 1, the first rectifier45comprises two first perforated plates451for example. In an embodiment, the first gas-inlet42is communicative to a working gas source.

Likewise, as indicated inFIG. 1, the second gas-import device50is positioned closer to the second electrode20than to the spacing G. The second gas-import device50comprises at least one second gas-import section51, and each of the second gas-import section51comprises a second gas-inlet52and a second gas-outlet53. The second gas-outlet53faces and is communicative to the second electrode20. InFIG. 1, the second gas-import device50comprises two second gas-import sections51for example. Each of the second gas-import sections51comprises a second distributor54and a second rectifier55positioned between the second gas-inlet52and the second gas-outlet53. The second distributor54is communicative to both the second gas-inlet52and the second rectifier55, and the second rectifier55is positioned between the second distributor54and the second gas-outlet53. The second gas-outlet53faces and is communicative to the second electrode20. In an embodiment, the second distributor54comprises a hollow pipe, and the hollow pipe includes a second orifice-inlet541communicative to the second gas-inlet52and a plurality of second orifice-outlets542facing the second rectifier55. In an embodiment, the second rectifier55comprises at least one second perforated plate551including a plurality of holes552communicative to the second gas-outlet53. InFIG. 1, the second rectifier55comprises two second perforated plate551for example. In an embodiment, the second gas-inlet52is communicative to a working gas source.

Refer toFIG. 1andFIG. 2, the first electrode10comprises at least one first opening11, which being communicative to both the spacing G and the first gas-outlet43of each of the first gas-import sections41. The second electrode20comprises at least one second opening21, which being communicative to both the spacing G and the second gas-outlet53of each of the second gas-import section51. In an embodiment, as shown inFIG. 3, the first openings11A being in form of a plurality of circular orifices. In another embodiment, as shown inFIG. 4, the first opening11B being in form of two slit openings. Similarly, the second opening21can be in form of a plurality of circular orifices (as11A) or two slit openings (as11B). Besides, the first opening11and the second opening21are not limited to be in the same form.

Refer toFIG. 1, the conveying device30includes a gripping member31transmitting the substrate80passing through the spacing G without contacting either the first electrode10or the second electrode20. The substrate80is made of non-conductive material.

In the present embodiment, as shown inFIG. 1, the plasma system100is positioned perpendicular to the ground, and the normal direction of each side of the substrate80is parallel to the ground. The conveying device30is disposed at the upper side of the plasma system100. In another embodiment, the conveying device30is disposed at the lower side of the plasma system100.

Refer toFIG. 5, the plasma system100C is positioned parallel to the ground, and the normal direction of each side of the substrate80is perpendicular to the ground. In the present embodiment, the conveying device30C includes a roll-to-roll driving member31C for winding and transmitting the substrate80passing through the spacing G. In another embodiment, as shown inFIG. 6, the conveying device30D includes at least one roller31D for transmitting the substrate80being in form of a plane type passing through the spacing G. Two rollers31D are shown inFIG. 6for example.

FIG. 1is schematic diagrams of a plasma system100according to an embodiment. The first electrode10is connected to a power generator60and the second electrode20is electrically connected with ground potential70. A working gas is imported into the spacing G between the first electrode10and the second electrode20and is stimulated by the power generator60. Then, plasma is generated simultaneously on both sides of the substrate80. In an embodiment, the working gas is imported into some sections of the spacing G so as to generate sectional plasma simultaneously on both sides of the substrate80. Therefore, continuous plasma processing of both sides of the substrate80simultaneously can be achieved.