APPARATUS FOR CLEANING CHAMBER USING GAS SEPARATION TYPE SHOWERHEAD

Abstract

An apparatus for cleaning an inside of a chamber using a gas separation type showerhead is provided. The apparatus includes: a gas supply module through which first and second gases are separately supplied; a gas separation module through which the first and second gases are separately dispersed; and a gas injection module that includes a plurality of holes through which the separately dispersed first and second gases are commonly injected into the chamber, wherein at least one gas of the first and second gases includes an ionized first cleaning gas including a gas containing fluorine (F) ingredient, and wherein at least one gas of the first and second gases includes a non-ionized second cleaning gas including nitrogen oxide based gas (NxOy, x and y are integers equal to or more than 1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

FIG. 1 illustrates a conventional apparatus for cleaning a chamber;

FIG. 2 illustrates an example of a gas separation type showerhead used for the present invention;

FIG. 3 illustrates a three-dimensional cross section of a gas separation module and a gas injection module of the gas separation type showerhead shown in FIG. 2;

FIGS. 4 to 6 illustrate examples of a system for supplying a cleaning gas used for the present invention;

FIGS. 7 and 8 illustrate an injection shape of a cleaning gas injected from the gas separation type showerhead shown in FIG. 2;

FIG. 9 illustrates another example of a system of supplying a cleaning gas used for the present invention;

FIGS. 10 and 11 illustrate injection shapes of a mixed cleaning gas and a gas for preventing back flow injected from the gas separation type showerhead shown in FIG. 2;

FIG. 12 illustrates another example of a gas separation type showerhead used for the present invention;

FIGS. 13 to 15 are bottom plan views of a third gas injection module of the gas separation type showerhead shown in FIG. 12;

FIGS. 16 and 17 are side views of the third gas injection module of the gas separation type showerhead shown in FIG. 12; and

FIGS. 18 to 22 illustrate injection shapes of gases injected from the gas separation type showerhead shown in FIG. 12.

Claims

1. An apparatus for cleaning an inside of a chamber using a gas separation type showerhead, the apparatus comprising: a gas supply module through which first and second gases are separately supplied;a gas separation module through which the first and second gases are separately dispersed; anda gas injection module that includes a plurality of holes through which the separately dispersed first and second gases are commonly injected into the chamber,wherein at least one gas of the first and second gases includes an ionized first cleaning gas including a gas containing fluorine (F) ingredient, andwherein at least one gas of the first and second gases includes a non-ionized second cleaning gas including nitrogen oxide based gas (NxOy, x and y are integers equal to or more than 1).

2. The apparatus of claim 1, wherein one gas of the first and second gases is the first cleaning gas, andwherein the other gas of the first and second gases is the second cleaning gas.

3. The apparatus of claim 1, wherein one gas of the first and second gases is a mixed cleaning gas obtained by mixing the first cleaning gas with the second cleaning gas, andwherein the other gas of the first and second gases is a gas for preventing back flow.

4. The apparatus of claim 3, wherein the gas for preventing back flow is argon gas (Ar).

5. The apparatus of claim 1, wherein the first cleaning gas is one selected from the group consisting of i) pure fluorine gas (F2), ii) a mixture of argon gas (Ar) and fluorine gas (F2), iii) a mixture of argon gas (Ar), nitrogen gas (N2), and fluorine gas (F2), iv) pure nitrogen trifluoride gas (NF3), and v) a mixture of argon gas (Ar) and nitrogen trifluoride gas (NF3).

6. The apparatus of claim 1, wherein the second cleaning gas is one selected from the group consisting of i) pure nitrogen oxide based gas and ii) a mixture of argon gas (Ar) and nitrogen oxide based gas (NxOy).

7. The apparatus of claim 1, wherein the gas separation module comprises: a first dispersion region through which the first gas is dispersed, and is constructed with one region;a second dispersion region located under the first dispersion region, through which the second gas is dispersed, and is divided into a plurality of regions; anda plurality of vents disposed under the second dispersion regions, through which the second gas is vented.

8. The apparatus of claim 7, wherein the second dispersion region includes a gas distribution plate for uniformly dispersing the second gas in the plurality of regions.

9. The apparatus of claim 7, wherein the first gas is vented to outer spaces of the plurality of vents from the first dispersion region through outer spaces of the plurality of regions of the second dispersion region.

10. An apparatus for cleaning an inside of a chamber using a gas separation type showerhead, the apparatus comprising: a gas separation type showerhead including a gas supply module through which first and second gases are separately supplied, a gas separation module through which the supplied first and second gases are separately dispersed, and a gas injection module including a plurality of holes, in which the separately dispersed first and second gases are commonly injected through the plurality of holes;a third gas supply module surrounding an outer surface of the gas separation type showerhead, through which a third gas for cleaning the inside of the chamber is supplied and transported; anda third gas injection module through which the supplied third gas is injected into the chamber.

11. The apparatus of claim 10, wherein the third gas injection module has an open structure in the downward direction.

12. The apparatus of claim 10, wherein the third gas injection module has a hole pattern structure in which the plurality of holes form at least one column in the downward direction.

13. The apparatus of claim 12, wherein injection angels of the plurality of holes with respect to a surface onto which the third gas is injected is regular.

14. The apparatus of claim 12, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is irregular.

15. The apparatus of claim 10, wherein the third gas injection module has a hole pattern structure in which the plurality of holes form at least one column in a side direction.

16. The apparatus of claim 15, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is regular.

17. The apparatus of claim 15, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is irregular.

18. The apparatus of claim 10, wherein the third gas is an ionized first cleaning gas including a gas containing fluorine (F) ingredient.

19. The apparatus of claim 18, wherein the first cleaning gas is one selected from the group consisting of i) pure fluorine gas (F2), ii) a mixture of argon gas (Ar) and fluorine gas (F2), iii) a mixture of argon gas (Ar), nitrogen gas (N2), and fluorine gas (F2), iv) pure nitrogen trifluoride gas (NF3), and v) a mixture of argon gas (Ar) and nitrogen trifluoride gas (NF3).

20. The apparatus of claim 10, wherein the third gas is a mixed cleaning gas obtained by mixing the ionized first cleaning gas including the gas containing fluorine (F) ingredient with a non-ionized second cleaning gas including nitrogen oxide based gas (NxOy, x and y are integers equal to or more than 1).

21. The apparatus of claim 20, wherein the first cleaning gas is one selected from the group consisting of i) pure fluorine gas (F2), ii) a mixture of argon gas (Ar) and fluorine gas (F2), iii) a mixture of argon gas (Ar), nitrogen gas (N2), and fluorine gas (F2), iv) pure nitrogen trifluoride gas (NF3), and v) a mixture of argon gas (Ar) and nitrogen trifluoride gas (NF3).

22. The apparatus of claim 20, wherein the second cleaning gas is one selected from the group consisting of i) pure nitrogen oxide based gas and ii) a mixture of argon gas (Ar) and nitrogen oxide based gas (NxOy).

23. An apparatus for cleaning an inside of a chamber using a gas separation type showerhead, the apparatus comprising: a gas separation type showerhead including a gas supply module through which first and second gases are separately supplied, a gas separation module through which the supplied first and second gases are separately dispersed, and a gas injection module including a plurality of holes, in which the separately dispersed first and second gases are commonly injected through the plurality of holes;a third gas supply module surrounding an outer surface of the gas separation type showerhead, through which a third gas for cleaning the inside of the chamber is supplied and transported; anda third gas injection module through which the supplied third gas is injected into the chamber,wherein at least one gas of the first and second gases and the third gas are gases for cleaning the inside of the chamber.

24. The apparatus of claim 23, wherein one gas of the first and second gases is an ionized first cleaning gas including a gas containing fluorine (F) ingredient,wherein the other gas of the first and second gases is a non-ionized second cleaning gas including a nitrogen oxide based gas (NxOy, x and y are integers equal to or more than 1), andwherein the third gas is a cleaning gas including at least one of the first and second cleaning gases.

25. The apparatus of claim 24, wherein the first cleaning gas is one selected from the group consisting of i) pure fluorine gas (F2), ii) a mixture of argon gas (Ar) and fluorine gas (F2), iii) a mixture of argon gas (Ar), nitrogen gas (N2), and fluorine gas (F2), iv) pure nitrogen trifluoride gas (NF3), and v) a mixture of argon gas (Ar) and nitrogen trifluoride gas (NF3).

26. The apparatus of claim 24, wherein the second cleaning gas is one selected from the group consisting of i) pure nitrogen oxide based gas and ii) a mixture of argon gas (Ar) and nitrogen oxide based gas (NxOy).

27. The apparatus of claim 23, wherein one gas of the first and second gases is a mixed cleaning gas obtained by mixing the ionized first cleaning gas including the gas containing fluorine (F) ingredient with the non-ionized second cleaning gas including nitrogen oxide based gas (NxOy),wherein the other gas of the first and second gases is a gas for preventing back flow, andwherein the third gas is a cleaning gas including at least one of the first and second cleaning gases.

28. The apparatus of claim 27, wherein the first cleaning gas is one selected from the group consisting of i) pure fluorine gas (F2), ii) a mixture of argon gas (Ar) and fluorine gas (F2), iii) a mixture of argon gas (Ar), nitrogen gas (N2), and fluorine gas (F2), iv) pure nitrogen trifluoride gas (NF3), and v) a mixture of argon gas (Ar) and nitrogen trifluoride gas (NF3).

29. The apparatus of claim 27, wherein the second cleaning gas is one selected from the group consisting of i) pure nitrogen oxide based gas and ii) a mixture of argon gas (Ar) and nitrogen oxide based gas (NxOy).

30. The apparatus of claim 27, wherein the gas for preventing back flow is argon gas (Ar).

31. The apparatus of claim 23, wherein the third gas injection module has an open structure in the downward direction.

32. The apparatus of claim 23, wherein the third gas injection module has a hole pattern structure in which the plurality of holes form at least one column in the downward direction.

33. The apparatus of claim 32, wherein injection angels of the plurality of holes with respect to a surface onto which the third gas is injected is regular.

34. The apparatus of claim 32, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is irregular.

35. The apparatus of claim 23, wherein the third gas injection module has a hole pattern structure in which the plurality of holes form at least one column in a side direction.

36. The apparatus of claim 35, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is regular.

37. The apparatus of claim 35, wherein injection angles of the plurality of holes with respect to a surface onto which the third gas is injected is irregular.