WO1993023874A1 - Plasma treatment apparatus and method in which a uniform electric field is induced by a dielectric window - Google Patents
Plasma treatment apparatus and method in which a uniform electric field is induced by a dielectric window Download PDFInfo
- Publication number
- WO1993023874A1 WO1993023874A1 PCT/US1993/004496 US9304496W WO9323874A1 WO 1993023874 A1 WO1993023874 A1 WO 1993023874A1 US 9304496 W US9304496 W US 9304496W WO 9323874 A1 WO9323874 A1 WO 9323874A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plasma
- chamber
- dielectric window
- window
- dielectric
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005684 electric field Effects 0.000 title claims abstract description 14
- 238000009832 plasma treatment Methods 0.000 title description 4
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000008021 deposition Effects 0.000 claims abstract description 14
- 238000001020 plasma etching Methods 0.000 claims abstract description 13
- 230000003213 activating effect Effects 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims description 13
- 239000003989 dielectric material Substances 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 210000002381 plasma Anatomy 0.000 description 38
- 235000012431 wafers Nutrition 0.000 description 28
- 239000007789 gas Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/32238—Windows
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/505—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges
- C23C16/507—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges using external electrodes, e.g. in tunnel type reactors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/321—Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
Definitions
- the invention relates to apparatuses for processing of substrates using radiofrequency induced plasma in a plasma chamber.
- the 10 invention provides apparatuses and methods for generating a plasma of a uniform plasma density.
- Gaseous plasma technology is a well known technique used for the fabrication of integrated circuits. Parallel plate reactors have been used
- a radiofrequency magnetic field is induced in a
- a flat dielectric window is used with the apparatuses. It has been observed that the magnetic flux of the planar coil is highest near the window center and, with a flat window, the induced electric field is consequently higher near the window center.
- the apparatuses and methods of the present invention utilize a dielectric window having a characteristic cross-section, wherein the window is thicker at the center and thinner at the edges, to decrease the higher induced electric field near the window center.
- An apparatus includes a housing having a chamber in which a wafer can be treated with plasma, the housing including at least one inlet port connected to an interior of the chamber through which process gas can be supplied to the chamber.
- the apparatus further includes a radiofrequency energy source comprising a plasma generating electrode that is arranged so as to pass radiofrequency energy into the chamber and induce plasma in the interior of -the chamber by activating, with an electric field induced by the radiofrequency energy source, process gas supplied to the chamber through the inlet port, the plasma generating electrode inducing a flow of electrons within a planar region in the chamber.
- a dielectric window having an inner surface thereof forming part of an inner wall of the chamber is arranged such that radiofrequency energy from the radiofrequency energy source can be passed to the interior of the chamber through the dielectric window.
- the dielectric window has a thickness which varies at different points along the inner surface thereof such that the thickness is greatest at a central portion of the dielectric window, the dielectric window being effective to decrease the induced electric field in the interior of the chamber near the central portion of the dielectric window.
- the radiofrequency energy source can comprise a substantially planar plasma generating electrode having one planar face thereof facing an outer planar surface of the dielectric window.
- the dielectric window can be circular in shape.
- the dielectric window can comprise a plurality of layers of the same or different dielectric materials.
- the dielectric window can also include at least one step therein such that the dielectric window has a region of reduced thickness surrounding the central portion.
- the dielectric window can include at least one tapered surface surrounding the central portion, or the dielectric window can be convex in shape.
- the invention also provides a method for treating an article with plasma comprising the steps of placing an article within a chamber and introducing process gas into the chamber and generating a uniform electric field in the chamber by passing radiofrequency energy through a dielectric window in the chamber.
- the dielectric window has a thickness which varies at dif erent points along an inner surface thereof such that the thickness is greatest at a central portion of the dielectric window.
- the uniform electric field generates a uniform electron flow in the process gas and thereby generates a plasma of uniform plasma density.
- the process further includes the step of plasma treating an article by exposing a surface of the article to the plasma generated in the chamber.
- FIG. 1 is an isometric view of an apparatus for producing a planar plasma in accordance with the present invention
- FIG. 2 is a cross-sectional view of the apparatus of FIG. 1;
- FIG. 3 is a schematic view of the circuitry of the apparatus in FIG. 1;
- FIG. 4 is a schematic view illustrating the magnetic field profile produced by the apparatus of FIG. 1;
- FIG. 5 is a graphic representation of ion current density versus distance from a center of a wafer in an apparatus having a dielectric window with a flat cross-section;
- FIG. 6 is a graphic representation of ion current density versus distance from a center of a wafer in an apparatus according to the present invention
- FIG. 7 is a side view of an embodiment of a dielectric window according to the present invention
- FIG. 8 is a side view of another embodiment of a dielectric window according to the present invention.
- FIG. 9 is a side view of a further embodiment of a dielectric window according to the present invention.
- apparatus and methods are provided for producing highly uniform, planar plasmas over relatively large areas.
- the ionic and radical species produced in the plasma experience minimum acceleration in non-planar directions, and the resulting plasma thus has very low desired kinetic energy.
- uniform planar plasma can be produced over very wide pressure ranges, typically from 10 "5 Torr to 5 Torr, and greater.
- the apparatus of the present invention comprises a housing having an interior chamber bounded at least in part by a dielectric window.
- a planar coil is disposed proximate the window, and a radiofrequency source is coupled to the coil.
- the radiofrequency source is coupled through an impedance matching circuit to maximize power transfer and a tuning circuit to provide for resonance at the operating frequency, typically 13.56 MHz.
- Inlet ports are provided for supplying a process gas to the chamber.
- an electromagnetic field is induced which extends into the chamber through the dielectric window. In this way, a flow of electrons may be induced.
- transfer of kinetic energy in non-planar directions is minimized.
- the chamber includes a support surface for a planar article, typically a semiconductor wafer.
- the surface supports the wafer in a plane which is parallel to the plane of the coil, and hence, also parallel to the plane of the plasma.
- the semiconductor wafer is exposed to a uniform plasma flux, ensuring uniform plasma treatment.
- the plasma species have minimum kinetic velocities in non-planar directions, their kinetic impact on the wafer is minimized.
- the treatment can be generally limited to the chemical interaction of the plasma species with the wafer.
- a velocity component in the direction normal to the surface of the semiconductor wafer may be provided by applying a radiofrequency potential in a direction normal to the plane of the plasma.
- such a potential may be applied by the support surface upon which the wafer is maintained.
- the support surface can include a conventional bottom electrode for supplying such a potential.
- the method and apparatus of the present invention are useful in a variety of semiconductor processing operations including plasma etching, deposition processes, resist stripping, plasma enhanced chemical vapor depositions, and the like.
- the housing defines a generally air-tight interior chamber wherein the planar plasma is to be generated.
- the housing includes at least one inlet port for introducing a process gas and at least one outlet port for connection to a vacuum system for maintaining a desired operation pressure within the chamber.
- Systems for supplying a preselected process gas and for maintaining a preselected pressure within the chamber are well known in the art and need not be described further.
- One or more surfaces within the chamber support the articles to be treated. Typically, the surfaces will be disposed in a preselected orientation relative to the planar plasma which is to be generated within the chamber, the surfaces usually being generally parallel to the plane of the plasma.
- an electrically-conductive coil is disposed adjacent the exterior of the dielectric window.
- the coil is substantially planar and generally comprises a single conductive element formed into a planar spiral or a series of concentric rings.
- the planar coil is generally circular, although ellipsoidal patterns and other deviations from true circularity can be tolerated. Moreover, the coil may be truly planar across its diameter, or may deviate somewhat from true planarity. Deviations from planarity can be less than 0.2 of the diameter of the coil, usually being less than 0.1 of the diameter.
- Adjustments to the profile of the coil may be made to modify the shape of the field which is generated.
- the diameter of the coil will generally correspond to the size of the plasma which is to be generated. Coil diameters may range from about 8 cm to 30 cm usually from about 13 cm to 18 cm. For the treatment of individual semiconductor wafers, the coil diameter will generally be from about 13 cm to 18 cm.
- the coil includes a sufficient number of turns in order to produce a relatively uniform magnetic field across its entire diameter. The number of turns will also depend upon the diameter of the coil.
- a coil sized for treating individual semiconductor wafers usually has from about 5 to 8 turns.
- the resulting inductance of the coil will usually be from 1.2 to 3.5 ⁇ H, with an impedance in the range from about 20 to 300 Ohms.
- the planar coil may be formed from any electrically conductive metals, the planar coil usually being formed from copper.
- the coil can have a load carrying capacity in the range from about 5 to 100 amps.
- the planar coil is disposed next to a dielectric window forming part of the treatment chamber.
- the dielectric window maintains the isolation of the interior of the chamber, while allowing penetration of the magnetic field produced by the planar coil.
- the remainder of the housing can be metal.
- the dielectric window can be composed of quartz, although other dielectric materials, particularly ceramics which do not absorb energy at the frequency of operation, may be used.
- a dielectric window may be placed adjacent a port formed in a wall of the housing.
- the geometry of the port usually corresponds to that of the planar coil, the planar coil typically being circular.
- the planar coil can be disposed very close to or touching the dielectric window in order, to maximize the intensity of the magnetic field produced within the chamber.
- the thickness of the dielectric window is thin enough to transmit the energy to the plasma, the thickness usually being selected to be sufficient to withstand the differential pressure created by the vacuum within the chamber.
- the window can be at least one-half inch (1.27 cm) thick or thicker.
- the planar coil is driven by a radiofrequency (RF) generator of a type which is generally utilized in the operation of semiconductor processing equipment.
- the RF generator will usually operate at a frequency in the range from about 13.56 MHz to 100 MHz, the RF generator typically being operated at 13.56 MHz.
- the RF generator usually has a low impedance, typically about 50 Ohms, and will be capable of producing from about 1 to 6 amps, usually from about 2 to 3.5 amps, with an RMS voltage of at least about 50 volts, usually being at least about 70 volts, or more.
- the RF generator can have an output connector in the form of a coaxial cable which may be connected directly to the circuitry operating the planar coil.
- a plasma treatment system 10 suitable for etching individual semiconductor wafers W includes a chamber 12 having an access port 14 formed in an upper wall 16.
- a dielectric shield/window 18 is disposed below the upper wall 16 and extends across the access port 14.
- the dielectric window 18 is sealed to the wall 16 to define a vacuum-tight interior chamber 19 of the chamber 12.
- a planar coil 20 is disposed within the access port 14 adjacent to dielectric window 18.
- Coil 20 is formed as a spiral having a center tap 22 and an outer tap 24.
- the plane of the coil 20 is oriented parallel to both the dielectric window 18 and a support surface 13 upon which the wafer is mounted. In this way, the coil 20 is able to produce a planar plasma within the chamber 19 of the chamber 12 which is parallel to the wafer .
- the distance between the coil 20 and the support surface 13 can be in the range from about 3 to 15 cm, more usually from about 5 to 20 cm, with the exact distance depending upon the particular application.
- the planar coil 20 is driven by an RF generator 30 of the type described above.
- the output of the generator 30 is fed by a coaxial cable 32 to a matching circuit 34.
- the matching circuit 34 includes a primary coil 36 and a secondary loop 38 which may be mutually positioned to adjust the effective coupling of the circuit and allow for loading of the circuit at the frequency of operation.
- the primary coil 36 is mounted on a disk 40 which may be rotated about a vertical axis 42 in order to adjust the coupling.
- a variable capacitor 44 is also provided in series with the secondary loop 38 in order to adjust the circuit resonant frequency with the frequency output of the RF generator 30. Impedance matching maximizes the efficiency of power transfer to the planar coil 20.
- An additional variable capacitor 46 can be provided in the primary circuit in order to cancel part of the inductive reactance of coil 36 in the circuit.
- FIG. 4 shows a desired magnetic field profile 60 in a conventional apparatus using a flat dielectric window 18 and a planar coil 20. At the edges of the coil 20, the magnetic field strength is less than at the center.
- FIG. 5 shows that, with such an apparatus having a window of uniform thickness, ion current density drops off sharply as ion current density is measured farther and farther from the center position 0 of the window 18.
- the dotted line in FIG. 5 corresponds to the outer edge of a 6 inch (15.24 cm) wafer.
- the reduced ion current density at extreme edges should not adversely affect oxide and resist etch rates on the wafer W.
- Substantially uniform ion current density is made possible by the present invention by providing a window 18 having a thickened center portion.
- the ion current density is substantially uniform from center position 0 to distances of at least 750 mm from the center position 0.
- the dotted line in FIG. 6 corresponds to an edge of an 8 inch (20.32 cm) wafer.
- the window 18 according to the invention can have various cross- sections. Several different types of window material may be used for the dielectric window 18, including ceramic, quartz or glass materials.
- the most advantageous window cross-section under the particular intended use conditions will be a function of the dielectric constant of the particular window material that is chosen and power supplied to the coil. For instance, in the case where 500 Watts is supplied to the coil, the ratio (t c /t c ) of center thickness t c to edge thickness t e is about 3:1. If the power is increased to 1000 Watts, the ratio t c /t c is preferably about 1.5:1. On the other hand, if the power is lowered to 200 Watts, the ratio t c /t e is preferably about 6:1.
- the window 18 having a thickened center may be formed by machining or molding a particular dielectric material such as A1 2 0 3 , Zr0 2 , Si0 2 , etc. to form a particular lens cross-section.
- window 18A can be formed by laminating (such as by sintering) together a series of progressively smaller window portions 181, 182, 183 which form a series of steps, as shown in FIG. 7.
- portions 181 and 183 are one-half inch (1.27 cm) in thickness, and portion 182 is one-quarter inch (0.64 cm) in thickness.
- the progressively smaller window portions 181, 182, 183 may, of course, also be machined or molded from a single piece of dielectric material.
- window 18B can have the convex cross-section shown in FIG. 8 or the truncated cone cross-section of the window 18C shown in FIG. 9.
- window 18C includes a tapered surface surrounding a thicker central portion of the window.
- the window 18 can also be made by laminating together materials having different dielectric properties, such as ceramic materials laminated together preferably without adhesive.
- dielectric window 18 comprises a flat disc of A1 2 0 3 having a diameter of 9 to 10 inches (22.86 to 25.4 cm). Such a window can be held by suitable seal means in a 12 inch (30.48 cm) diameter opening in a plasma chamber.
- the thickened central portion of the window is preferably formed by a flat disc of A1 2 0 3 having a diameter of about 5 to 6 inches (12.7 to 15.24 cm) .
- the two pieces of A1 2 0 3 can be laminated together by sintering, and the ratio of diameters of the two discs can be about 2:1. If the coil is supplied with 500 Watts, the thickness t e at the outer edge of the window is preferably 1.0 inch (2.54 cm), and the thickness t c of the center of the window is preferably 1.5 inch (3.81 cm).
- the thickened central portion of the window 18 is ordinarily disposed on the inside of the chamber 12, with a flat outer surface of the window 18 facing outwardly from the chamber. Nonetheless, different characteristic cross-sections, configurations, materials, and window thicknesses may be found to be more efficacious for particular applications.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50273494A JP3378248B2 (en) | 1992-05-14 | 1993-05-13 | Plasma device having a dielectric window for inducing a uniform electric field in a plasma chamber and method for handling objects with the plasma device |
DE69313275T DE69313275T2 (en) | 1992-05-14 | 1993-05-13 | PLASMA TREATMENT DEVICE WHERE A SAME-SHAPED ELECTRICAL FIELD IS INDUCED BY A DIELECTRIC WINDOW AND RELATED METHOD |
KR1019940704046A KR100278232B1 (en) | 1992-05-14 | 1993-05-13 | Apparatus and method for plasma processing in which a uniform electric field is induced by a dielectric window |
EP93911270A EP0640244B1 (en) | 1992-05-14 | 1993-05-13 | Plasma treatment apparatus and method in which a uniform electric field is induced by a dielectric window |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/883,201 | 1992-05-14 | ||
US07/883,201 US5226967A (en) | 1992-05-14 | 1992-05-14 | Plasma apparatus including dielectric window for inducing a uniform electric field in a plasma chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993023874A1 true WO1993023874A1 (en) | 1993-11-25 |
Family
ID=25382172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/004496 WO1993023874A1 (en) | 1992-05-14 | 1993-05-13 | Plasma treatment apparatus and method in which a uniform electric field is induced by a dielectric window |
Country Status (9)
Country | Link |
---|---|
US (2) | US5226967A (en) |
EP (1) | EP0640244B1 (en) |
JP (1) | JP3378248B2 (en) |
KR (1) | KR100278232B1 (en) |
AT (1) | ATE157197T1 (en) |
DE (1) | DE69313275T2 (en) |
ES (1) | ES2105263T3 (en) |
TW (1) | TW215968B (en) |
WO (1) | WO1993023874A1 (en) |
Families Citing this family (319)
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US5772832A (en) * | 1991-06-27 | 1998-06-30 | Applied Materials, Inc | Process for etching oxides in an electromagnetically coupled planar plasma apparatus |
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TW280083B (en) * | 1993-03-04 | 1996-07-01 | Tokyo Electron Co Ltd | |
US5565114A (en) * | 1993-03-04 | 1996-10-15 | Tokyo Electron Limited | Method and device for detecting the end point of plasma process |
US5401350A (en) * | 1993-03-08 | 1995-03-28 | Lsi Logic Corporation | Coil configurations for improved uniformity in inductively coupled plasma systems |
US5824158A (en) * | 1993-06-30 | 1998-10-20 | Kabushiki Kaisha Kobe Seiko Sho | Chemical vapor deposition using inductively coupled plasma and system therefor |
US5614055A (en) * | 1993-08-27 | 1997-03-25 | Applied Materials, Inc. | High density plasma CVD and etching reactor |
GB9321489D0 (en) * | 1993-10-19 | 1993-12-08 | Central Research Lab Ltd | Plasma processing |
US5619103A (en) * | 1993-11-02 | 1997-04-08 | Wisconsin Alumni Research Foundation | Inductively coupled plasma generating devices |
TW293983B (en) * | 1993-12-17 | 1996-12-21 | Tokyo Electron Co Ltd | |
US5783492A (en) * | 1994-03-04 | 1998-07-21 | Tokyo Electron Limited | Plasma processing method, plasma processing apparatus, and plasma generating apparatus |
TW293231B (en) * | 1994-04-27 | 1996-12-11 | Aneruba Kk | |
DE69531880T2 (en) | 1994-04-28 | 2004-09-09 | Applied Materials, Inc., Santa Clara | Method for operating a CVD reactor with a high plasma density with combined inductive and capacitive coupling |
US5587038A (en) * | 1994-06-16 | 1996-12-24 | Princeton University | Apparatus and process for producing high density axially extending plasmas |
US5540800A (en) * | 1994-06-23 | 1996-07-30 | Applied Materials, Inc. | Inductively coupled high density plasma reactor for plasma assisted materials processing |
US5540824A (en) * | 1994-07-18 | 1996-07-30 | Applied Materials | Plasma reactor with multi-section RF coil and isolated conducting lid |
US5521351A (en) * | 1994-08-30 | 1996-05-28 | Wisconsin Alumni Research Foundation | Method and apparatus for plasma surface treatment of the interior of hollow forms |
US5777289A (en) | 1995-02-15 | 1998-07-07 | Applied Materials, Inc. | RF plasma reactor with hybrid conductor and multi-radius dome ceiling |
JP2770753B2 (en) * | 1994-09-16 | 1998-07-02 | 日本電気株式会社 | Plasma processing apparatus and plasma processing method |
US5753044A (en) * | 1995-02-15 | 1998-05-19 | Applied Materials, Inc. | RF plasma reactor with hybrid conductor and multi-radius dome ceiling |
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US5688357A (en) * | 1995-02-15 | 1997-11-18 | Applied Materials, Inc. | Automatic frequency tuning of an RF power source of an inductively coupled plasma reactor |
US6270617B1 (en) | 1995-02-15 | 2001-08-07 | Applied Materials, Inc. | RF plasma reactor with hybrid conductor and multi-radius dome ceiling |
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- 1993-05-13 JP JP50273494A patent/JP3378248B2/en not_active Expired - Fee Related
- 1993-05-13 KR KR1019940704046A patent/KR100278232B1/en not_active IP Right Cessation
- 1993-05-13 AT AT93911270T patent/ATE157197T1/en not_active IP Right Cessation
- 1993-05-13 ES ES93911270T patent/ES2105263T3/en not_active Expired - Lifetime
- 1993-06-08 TW TW082104554A patent/TW215968B/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4017404A (en) * | 1976-03-11 | 1977-04-12 | The United States Of America As Represented By The Secretary Of The Department Of Health, Education And Welfare | Apparatus for low temperature ashing using radio frequency excited gas plasma |
US5038712A (en) * | 1986-09-09 | 1991-08-13 | Canon Kabushiki Kaisha | Apparatus with layered microwave window used in microwave plasma chemical vapor deposition process |
US4785763A (en) * | 1986-12-09 | 1988-11-22 | Canon Kabushiki Kaisha | Apparatus for the formation of a functional deposited film using microwave plasma chemical vapor deposition process |
US4844775A (en) * | 1986-12-11 | 1989-07-04 | Christopher David Dobson | Ion etching and chemical vapour deposition |
US5122251A (en) * | 1989-06-13 | 1992-06-16 | Plasma & Materials Technologies, Inc. | High density plasma deposition and etching apparatus |
US4948458A (en) * | 1989-08-14 | 1990-08-14 | Lam Research Corporation | Method and apparatus for producing magnetically-coupled planar plasma |
Also Published As
Publication number | Publication date |
---|---|
KR950701768A (en) | 1995-04-28 |
JP3378248B2 (en) | 2003-02-17 |
DE69313275D1 (en) | 1997-09-25 |
US5368710A (en) | 1994-11-29 |
ATE157197T1 (en) | 1997-09-15 |
KR100278232B1 (en) | 2001-02-01 |
ES2105263T3 (en) | 1997-10-16 |
DE69313275T2 (en) | 1997-12-04 |
TW215968B (en) | 1993-11-11 |
EP0640244A1 (en) | 1995-03-01 |
EP0640244A4 (en) | 1995-07-12 |
US5226967A (en) | 1993-07-13 |
JPH07508125A (en) | 1995-09-07 |
EP0640244B1 (en) | 1997-08-20 |
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