← Back to Patent Explorer
US4689112A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for dry processing of substrates

Assignee: Ulvac Inc
•
Filing: 1986-10-10
•
Granted: 1987-08-25
•
Expires: 2006-10-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract This invention relates to an apparatus and process for the uniform dry process treatment of the surface of a substrate. More particularly, the invention relates to an apparatus and process wherein a gas plasma composition having at least one reactive specie is supplied through a first inlet port into a chamber means containing the substrate to be treated. A second gas is also supplied into the chamber through a second inlet port thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.

Inventors

  • 👤 Richard L. Bersin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 20:31
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32431; H01J37/32623; H01J37/32009; H01J37/32321; H01J37/32339; H01J37/32357; H01J37/32422; H10; H10P; H10P50/00; H10P50/20; H10P50/24; H10P50/242

Claims Analysis

Total Claims: 35
Claim 1
Independent Claim 117 words
An apparatus for the uniform dry process treatment of the surface of a substrate, the apparatus comprising: (a) a chamber means containing the substrate to be treated; (b) a means for generating a gas plasma composition having at least one reactive specie; (c) a means operatively connecting said generating means with said chamber means for supplying the gas plasma composition into said chamber means through a first inlet port, thereby exposing the substrate to the first gas; and (d) a means operatively connected to said chamber means for supplying a second gas into said chamber means through a second inlet port thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.
Claim 2
Independent Claim 117 words
An apparatus for the uniform dry process treatment of the surface of a substrate, the apparatus comprising: (a) a chamber means containing the substrate to be treated; (b) a means for generating a gas plasma composition having at least one reactive specie; (c) a means operatively connecting said generating means with said chamber means for supplying the gas plasma composition into said chamber means through a first inlet port, thereby exposing the substrate to the first gas; and (d) a means operatively connected to said chamber means for supplying a second gas into said chamber means through a second inlet port thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.
Claim 3
Dependent Claim 55 words
The apparatus of claim 1 wherein the gas plasma composition is supplied into said chamber means in a stream having a first directional component and the second gas is supplied into said chamber means in a stream having a second directional component, thereby redirecting the gas plasma composition into substantially uniform contact with the substrate.
Claim 4
Dependent Claim 17 words
The apparatus of claim 2 wherein the second directional component is 180° from the first directional component.
Claim 5
Dependent Claim 19 words
The apparatus of claim 2 wherein the first and second directional components are each substantially parallel to the substrate.
Claim 6
Dependent Claim 26 words
The apparatus of claim 1 wherein the gas plasma composition is selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen and mixtures thereof.
Claim 7
Dependent Claim 28 words
The apparatus of claim 1 wherein the second gas is selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen, argon, helium, zenon and mixtures thereof.
Claim 8
Dependent Claim 21 words
The apparatus of claim 5 wherein the second gas is comprised of the same consitiuent gas as the gas plasma composition.
Claim 9
Dependent Claim 13 words
The apparatus of claim 6 wherein the second gas is a second plasma.
Claim 10
Dependent Claim 39 words
The apparatus of claim 7 wherein the flow rate of the second gas is about 0.50 to about 0.85 times that of the gas plasma composition, thereby redirecting the gas plasma composition into substantially uniform contact with the substrate.
Claim 11
Dependent Claim 28 words
The apparatus of claim 1 wherein said gas plasma composition supply means further comprises a means for substantially eliminating any electrically charged particles in the gas plasma composition.
Claim 12
Dependent Claim 29 words
The apparatus of claim 10 wherein said eliminating means comprises a conduit having sufficient length to permit any electrically charged particles in the gas plasma composition to be dissipated.
Claim 13
Dependent Claim 15 words
The apparatus of claim 1 wherein said chamber means is capable of maintaining a vacuum.
Claim 14
Dependent Claim 17 words
The apparatus of claim 12 which further comprises a vacuum means operatively connected to said chamber means.
Claim 15
Dependent Claim 29 words
The apparatus of claim 1 which further comprises a first irradiating means for irradiating the surface of the substrate to be treated with electromagnetic radiation comprising collimated ultraviolet radiation.
Claim 16
Dependent Claim 19 words
The apparatus of claim 1 which further comprises a second irradiating means for irradiating the substrate with infrared radiation.
Claim 17
Dependent Claim 33 words
The apparatus of claim 15 wherein said chamber means further comprises a means for holding the substrate in a position whereby the substrate may be irradiated by the first and second irradiating means.
Claim 18
Dependent Claim 16 words
The apparatus of claim 16 wherein said holding means comprises a plurality of elongated quartz members.
Claim 19
Dependent Claim 21 words
The apparatus of claim 15 wherein the second irradiating means heats the substrate to between about 250° to about 300° C.
Claim 20
Dependent Claim 90 words
A process for the uniform dry process treatment of the surface of a substrate, the process comprising: (a) generating a gas plasma composition comprising a plasma having a least one reactive specie; (b) supplying a stream of the gas plasma composition into a chamber means containing the substrate to be treated through a first inlet port; and (c) supplying a stream of a second gas into said chamber means through a second inlet port thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.
Claim 21
Dependent Claim 90 words
A process for the uniform dry process treatment of the surface of a substrate, the process comprising: (a) generating a gas plasma composition comprising a plasma having a least one reactive specie; (b) supplying a stream of the gas plasma composition into a chamber means containing the substrate to be treated through a first inlet port; and (c) supplying a stream of a second gas into said chamber means through a second inlet port thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.
Claim 22
Dependent Claim 30 words
The process of claim 19 wherein the stream of the gas plasma composition has a first directional component and the stream of the second gas has a second directional component.
Claim 23
Dependent Claim 17 words
The apparatus of claim 20 wherein the second directional component is 180° from the first directional component.
Claim 24
Dependent Claim 19 words
The apparatus of claim 20 wherein the first and second directional components are each substantially parallel to the substrate.
Claim 25
Dependent Claim 26 words
The apparatus of claim 19 wherein the gas plasma composition is selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen and mixtures thereof.
Claim 26
Dependent Claim 28 words
The process of claim 19 wherein the second gas is selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen, argon, helium, xenon and mixtures thereof.
Claim 27
Dependent Claim 20 words
The process of claim 23 wherein the second gas is comprised of the same constituent as the gas plasma composition.
Claim 28
Dependent Claim 13 words
The process of claim 24 wherein the second gas is a second plasma.
Claim 29
Dependent Claim 26 words
The process of claim 25 wherein the flow rate of the second gas is about 0.50 to about 0.85 times that of the gas plasma composition.
Claim 30
Dependent Claim 30 words
The process of claim 19 which further comprises substantially eliminating any electrically charged particles in the gas plasma composition prior to supplying the gas plasma composition into said chamber means.
Claim 31
Dependent Claim 15 words
The process of claim 19 which further comprises irradiating the substrate with collimated ultraviolet radiation.
Claim 32
Dependent Claim 29 words
The process of claim 19 which further comprises irradiating the substrate with infrared radiation to heat the substrate to a temperature of from about 250° to about 300° C.
Claim 33
Dependent Claim 18 words
The process of claim 19 which further comprises maintaining at least a partial vacuum in said chamber means.
Claim 34
Dependent Claim 163 words
A process for the uniform dry process treatment of the surface of a substrate, the process comprising: (a) generating a gas plasma composition comprising a plasma having at least one reactive specie, the gas plasma composition selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen and mixtures thereof; (b) supplying a stream of the gas plasma composition having a first directional component substantially parallel to the substrate through a first inlet port into a chamber means containing the substrate to be treated; (c) supplying a stream of a second gas, comprised of the same constituent gas as the gas plasma composition, having a second directional component 180° from the first directional component and substantially parallel to the substrate, through a second inlet port into said chamber means at a flow rate of about 0.50 to about 0.85 times that of the gas plasma composition, thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.
Claim 35
Dependent Claim 163 words
A process for the uniform dry process treatment of the surface of a substrate, the process comprising: (a) generating a gas plasma composition comprising a plasma having at least one reactive specie, the gas plasma composition selected from the group consisting of oxygen, nitrogen, CF 4 , hydrogen and mixtures thereof; (b) supplying a stream of the gas plasma composition having a first directional component substantially parallel to the substrate through a first inlet port into a chamber means containing the substrate to be treated; (c) supplying a stream of a second gas, comprised of the same constituent gas as the gas plasma composition, having a second directional component 180° from the first directional component and substantially parallel to the substrate, through a second inlet port into said chamber means at a flow rate of about 0.50 to about 0.85 times that of the gas plasma composition, thereby redirecting the gas plasma composition into contact with the substrate in a substantially uniform manner.

References Cited (Backward Citations)

US4579623A Cited
US4615756A Cited
US4595452A Cited
US4612085A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-08-24 1991-02-23 1991-08-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-08-24 1995-02-23 1995-08-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-08-24 1999-02-23 1999-08-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag