US20130312913A1 - Arrangement for depositing bevel protective film - Google Patents
Arrangement for depositing bevel protective film Download PDFInfo
- Publication number
- US20130312913A1 US20130312913A1 US13/959,595 US201313959595A US2013312913A1 US 20130312913 A1 US20130312913 A1 US 20130312913A1 US 201313959595 A US201313959595 A US 201313959595A US 2013312913 A1 US2013312913 A1 US 2013312913A1
- Authority
- US
- United States
- Prior art keywords
- substrate
- arrangement
- plasma
- bevel edge
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000151 deposition Methods 0.000 title claims abstract description 42
- 230000001681 protective effect Effects 0.000 title claims description 14
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 230000008021 deposition Effects 0.000 claims abstract description 30
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims description 20
- 238000005530 etching Methods 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000011065 in-situ storage Methods 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 3
- 238000009616 inductively coupled plasma Methods 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 description 74
- 238000000034 method Methods 0.000 description 32
- 239000000463 material Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 7
- 229910021418 black silicon Inorganic materials 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
-
- 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
- H01J37/32366—Localised processing
-
- 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
- H01J37/32366—Localised processing
- H01J37/32376—Scanning across large workpieces
-
- 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
- H01J37/32431—Constructional details of the reactor
- H01J37/32532—Electrodes
- H01J37/32568—Relative arrangement or disposition of electrodes; moving means
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
- H01L21/2003—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy characterised by the substrate
- H01L21/2007—Bonding of semiconductor wafers to insulating substrates or to semiconducting substrates using an intermediate insulating layer
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table 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
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table 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
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
- H01L21/3083—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
Definitions
- substrates e.g.. semiconductor waters
- substrates e.g. semiconductor waters
- plasma-enhanced etching, and wafer bonding have often been employed in these processing steps.
- FIGS. 1A-B and 2 A-B show examples of these problems in via etching and in wafer bonding.
- FIGS. 1A and 1B demonstrate the problem of etching processes eating away at the substrate edge or bevel in a via etch process.
- FIG. 1A shows a substrate 100 and a substrate edge region 102 prior to etching.
- mask 106 remains on substrate 100 after etching.
- Thickness 110 reflects the original thickness of the substrate prior to etching.
- FIG. 1B shows a substrate edge region 112 after etching.
- area 114 represents the area where the substrate edge or bevel turns into black silicon post-etch.
- Black silicon is a rough part of the original substrate that has been eaten away by the etchant.
- Thickness 120 of FIG. 1B is substantially less than the original thickness of the wafer, substantially increasing the likelihood of bevel collapse.
- the black silicon area 114 can trap contamination that may pollute the processing steps in the future.
- thick protective films or anti-etching sacrificial films at the substrate edge or bevel are used to minimize substrate bevel collapse.
- Another approach of wafer bevel protection utilizes a process kit known as a shadow ring, which is placed on top of bevel area of the wafer or slightly above the wafer.
- the shadow ring oftentimes introduces tilting, and particle issues. Accordingly, this process requires many stages to define the film at the substrate edge. This is problematic especially if the film deposition at the substrate edge or bevel requires separate special equipments.
- FIGS. 2A-B illustrate an example of the problem in wafer bonding near the edge or bevel.
- FIG. 2A shows lower wafer 202 , upper wafer 204 , and bonding material 206 .
- the bonding material is typically some type of organic material.
- CMP Chemical Mechanical Polish
- FIG. 2B shows the post-CMP bonded wafers.
- region 220 shows that the bonding material is exposed at the edge or bevel of the wafers. Having exposed bonding material can create side defects and other unpredictable effects,
- region 220 shows a negative slope near the edge or bevel of the wafers.
- semiconductor manufacturers may prefer positive slope geometries near the edge of a wafer.
- the negative slope and the exposed bonding material may present other problems such as undercut issues or delamination issues.
- CMP may be employed to shape the edge or bevel back to a positive slope.
- this solution is costly, and does not solve the problem of the exposed bonding material.
- FIG. 1A is a schematic view of a substrate edge prior to a via etch.
- FIG. 1B is a schematic view of a substrate edge post a via etch.
- FIG. 2A is a schematic view of substrate edges post wafer bonding and prior to a CMP.
- FIG. 2B is a schematic view of substrate edges post wafer bonding and post-CMP.
- FIG. 3A shows, in accordance with an embodiment of the invention, a schematic view of substrate edge prior to a via etch using localized film deposition at the substrate edge.
- FIG. 3B shows, in accordance with an embodiment of the invention, a schematic view of substrate edge post a via etch using, localized film deposition at the substrate edge.
- FIG. 4 shows, in accordance with an embodiment of the invention, a schematic view of substrate edge post wafer bonding and post-CMP using localized film deposition at the substrate edge.
- FIG. 5A shows, in accordance with an embodiment of the invention, a generic machine for depositing protective film at bevel edge.
- FIG. 5B shows, in accordance with an embodiment of the invention, a magnified illustration of a ceramic part illustrated in FIG. 3A .
- FIG. 6 shows, in accordance with an embodiment of the invention, the method steps for creating protective film at bevel edge.
- FIG. 7 shows, in accordance with an embodiment of the invention, a generic machine of FIG. 3A plus inductive antennas for in situ cleaning at the bevel edge.
- FIG. 8 shows, in accordance with an embodiment of the invention, the method steps for in situ inductive cleaning, post localized film deposition,
- the present invention addresses at least the problems faced in via etching and wafer bonding.
- the invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers in a plasma chamber.
- the method includes adjusting an electrode gap between a movable electrode and a stationary electrode with a wafer disposed in between.
- the electrode gap is adjusted to a gap distance configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the wafer's bevel edge still may be formed.
- the method also includes flowing deposition gas into the plasma chamber.
- the method further includes maintaining, using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge.
- the method also includes generating the localized plasma from the deposition gas for depositing a film on the bevel edge.
- the invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers.
- the method includes adjusting the flow of deposition gas into a plasma chamber to a pressure configured to prevent plasma formation over a center portion of the wafer, the pressure also adjusted such that a plasma-sustainable condition around the bevel edge of the wafer is formed after the adjusting.
- the method also includes maintaining, using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge.
- the method further includes generating the localized plasma from the deposition gas for depositing a film on the bevel edge.
- the invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers.
- the method includes adjusting an electrode gap between a movable electrode and a stationary electrode with the wafer disposed in between. The electrode gap is adjusted to a gap distance configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the bevel edge of the wafer may still be or is formed.
- the method also includes adjusting the flow of deposition gas into a plasma chamber to a pressure configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the bevel edge of the wafer may still be or is formed.
- the method further includes maintaining,. using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge.
- the method also includes generating the localized plasma from the deposition gas for depositing a film. on the bevel edge.
- FIG. 3A illustrates the proposed solution to the via etching problem suggested in FIGS. 1A and 1B , as applied to a wafer 300 prior to etching. There is also shown a substrate edge area 302 . Hard mask 306 remains on the central region of the wafer, while conformal protective film 308 is deposited on the bevel edge to protect the bevel edge.
- FIG. 3B illustrates the proposed solution to the via etching problem suggested in FIGS. 1A and 1B , as applied to a wafer 300 after etching.
- hard mask 306 remains.
- the protective film 308 is worn away slightly, protecting the substrate underneath in the bevel edge region 312 . This solves the problem of black silicon forming on the bevel edge, limiting the probability of break off or contaminant trapping.
- a comparison between FIG. 3A and FIG. 3B will show that thickness 318 of the substrate edge prior to etching remains approximately the same as thickness 320 of the substrate edge post etching.
- FIG. 4 illustrates the proposed solution to the wafer bonding problem presented in FIGS. 2A and 213 .
- FIG. 4 shows the bonded wafers 400 after the Chemical Mechanical Polish (CMP) process.
- Lower wafer 402 is bonded by bonding material 406 with upper wafer 414 .
- Upper wafer 414 is grinded down by CMP, In this situation, most semiconductor manufacturers want to protect the bonding material while creating a positive slope on the edge of the bonded wafers.
- FIG. 4 demonstrates how localized conformal film 418 deposited in the bevel edge region 420 may create the desired effects on the edge of the bonded wafers.
- FIG. 5A illustrates a generalized arrangement for depositing a protective film at the bevel edge of the wafer. Due to the need to deposit a precise conformal film on a challenging bevel edge topology and the need to refrain from depositing elsewhere, specialized equipment is necessary.
- the arrangement of FIG. 5A includes a capacitively coupled chamber 500 .
- Gas flow control 504 supplies gas or plasma to the edge area of a wafer 502 .
- Gas flow control 506 supplies gas or plasma to the central area of the wafer 502 .
- Gas flow may be supplied through liquid gas delivery or vas phase delivery.
- the two gas flow controls 504 and 506 individually or together may change the differential pressure over the center portion of the wafer as compared to the edge portion of the wafer.
- the exhaust from the chamber may exit through the exhaust pump 508 .
- Gap 510 represents the distance between the ceramic cover 512 and the wafer 502 .
- gap 510 is controlled such that the gap is insufficient for plasma formation. For example, a gap no larger than 1 mm cannot sustain plasma formation in sonic cases.
- the gap itself may be determined empirically based on the particulars of each chamber.
- Gas supplied by the gas flow controls 504 and 506 is turned into plasma by a RF source 520 that powers heater/chuck 524 .
- a top electrode 526 is disposed above ceramic cover 512 . Further, FIG. 5 a shows wafer 502 disposed above heater/chuck 524 .
- Liner 540 helps to protect lower extended electrode 538 against deposition.
- Liner 540 may be formed of a suitable material compatible with the deposition process.
- RF currents may flow from the heater/chuck 524 through both the upper extended electrode 536 and lower extended electrode 538 , through the chamber wall, and return back to the RF source 520 .
- Size-controllable ceramic part 550 is disposed next to the heater/chuck 524 .
- FIG. 5B illustrates the magnified view of the size-controllable ceramic part. 550 .
- the size of the ceramic part 550 may be adjusted to expose more or less of the under edge of the wafer 502 to the plasma for deposition purpose.
- FIG. 5B illustrates ceramic part 550 and the ceramic cover 512 . If a semiconductor manufacturer wants to deposit more to the backside of the wafer 502 edge, the size of ceramic part 550 may be adjusted. For example, a smaller outer diameter of ceramic part 550 may allow more of the deposition to reach the underside of the bevel edge.
- the diameter of ceramic cover 512 may also be adjusted to determine the width of the bevel edge film deposition on the upper side of the wafer. For example, a smaller outer diameter of ceramic cover 512 may allow more deposition on the upper outer edge of the bevel.
- Ceramic cover 512 and the top electrode 526 are movable (e.g., up and down) using a robot arm, a bellow, a belt, or other methods in order to allow for gap control.
- This mechanism is controlled by gap controller circuitry.
- the gap controller serves to control plasma formation in between the wafer and the top electrode of the chamber.
- the gap controller also assists in the insertion and the removal of the wafer to and from the plasma chamber.
- the actual mechanical movement to control the gap may be accomplished by a mechanical actuator, or by bellows, or by a belt-type gear, or the like.
- FIG. 6 shows, in accordance with an embodiment of the invention, the method steps for creating a protective film at the bevel edge.
- the silicon wafer is placed within the chamber via a robot arm mechanism
- the gap between the upper ceramic cover and the wafer is adjusted to a plasma-inhibiting gap distance to ensure that plasma will not form over the center portion of the water.
- the center portion of the wafer is the portion of the wafer with etched features, or is the part intended to have etched features.
- the center portion of the wafer is the portion of the wafer that is substantially flat.
- liquid or gas phase deposition gas is flowed into the plasma chamber, creating a pressure differential between the center portion of the chamber and the edge portion of the chamber.
- the pressure differential is controlled by multiple gas inlets into the center and the edge portion of the plasma chamber, in an embodiment of the invention, the pressure differential and the specified electrode gap may sustain plasma in the vicinity of the edge region of the wafer, but not in the region between the center portion of the wafer and the upper electrode, The exact pressure differential and electrode gap may be pre-determined through testing, or may be determined real-time by a feedback control system capable of detecting. whether plasma is formed over the center portion of the wafer.
- the deposition gas used may be a precursor for a dielectric film, a conductor film, an organic film, or any other film used in the semiconductor industry.
- RF-power to the heater and/or the chuck is turned on.
- film deposition plasma should have formed on the bevel edge of the wafer.
- the heater temperature is controlled, for example, to minimize adhesion stress.
- RF power and gas flow are turned off.
- the electrode gap above the wafer is enlarged to facilitate wafer removal.
- the wafer is removed by the robot arm mechanism.
- FIG. 7 shows, in accordance with an embodiment of the invention, a generalized implementation of FIG. 3A plus inductive antennas for in situ cleaning at the bevel edge.
- the ability to perform in-situ cleaning is an important advantage in improving output.
- Gap 710 may be adjusted to optimize for cleaning.
- Localized plasma may be created by RF source 722 energizing coil 724 .
- electrode 726 is formed of aluminum.
- Grounded upper and lower extended electrodes 736 and 738 typically are made from aluminum as well in one or more embodiments. Other materials may also be used for various electrodes.
- FIG. 8 shows, in accordance with an embodiment of the invention, the method steps for in situ inductive cleaning, post localized film deposition.
- the combination of in-situ inductive cleaning (which creates high density cleaning plasma) in a substantially capacitive chamber provides many advantages.
- the electrode gap above the wafer in the plasma chamber is adjusted to provide space for wafer removal.
- the electrode gap is adjusted again to a gap distance to govern how much of the cleaning plasma will encroach on the center portion of the plasma chamber.
- the etchant cleaning gas flows into the plasma chamber.
- the Transformer-Coupled Plasma (TCP) inductor coils are powered on for a certain period, of time to allow for the cleaning plasma to form and use the cleaning plasma to clean the plasma chamber.
- the etchant cleaning gas is allowed to exhaust.
- Advantages of the invention include the prevention of bevel collapse and the formation of black silicon on substrate edges during an etching process. Additional advantages include sealing off bonding materials post a wafer-bonding process. This conformal edge film deposition process further allows users to create a positive slope on the edges of two bonded wafers.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Drying Of Semiconductors (AREA)
- Chemical Vapour Deposition (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Plasma Technology (AREA)
Abstract
An arrangement for depositing a film at a bevel edge of a substrate in a plasma chamber. The arrangement includes a gas delivery system for supplying gas into the chamber. The arrangement also includes a pair of electrodes including a movable electrode and a stationary electrode, wherein the substrate is disposed on one of the pair of electrodes. The arrangement further includes a gap controller module configured for adjusting an electrode gap between the pair of electrodes to a gap distance configured to prevent plasma formation over a center portion of the substrate. The gap distance is also dimensioned such that a plasma-sustainable condition around the bevel edge of the substrate is formed. The arrangement moreover includes a heater disposed below the substrate and powered by an RE source, wherein the heater is maintained at a chuck temperature conducive for facilitating film deposition on the bevel edge of the substrate.
Description
- This application is a continuation of a previously filed patent application entitled “METHODS FOR DEPOSITING BEVEL PROTECTIVE FILM”, filed on Oct. 19, 2010 (application Ser. No. 12,907,149) with an Attorney Docket No. P2052/LMRX-P195, which is incorporated herein by reference.
- In the manufacture of semiconductor products, substrates (e.g.. semiconductor waters) are processed by successively depositing, etching, and polishing various layers to create semiconductor devices. More specifically, plasma-enhanced etching, and wafer bonding have often been employed in these processing steps.
- However, etching processes tend to cat away at the substrate edge or bevel, and wafer bonding processes tend to create negative slopes at the wafers' edge or bevel while exposing bonding materials.
FIGS. 1A-B and 2A-B show examples of these problems in via etching and in wafer bonding. -
FIGS. 1A and 1B demonstrate the problem of etching processes eating away at the substrate edge or bevel in a via etch process.FIG. 1A shows asubstrate 100 and asubstrate edge region 102 prior to etching. InFIG. 1A ,mask 106 remains onsubstrate 100 after etching.Thickness 110 reflects the original thickness of the substrate prior to etching. -
FIG. 1B shows asubstrate edge region 112 after etching. InFIG. 113 ,area 114 represents the area where the substrate edge or bevel turns into black silicon post-etch. Black silicon is a rough part of the original substrate that has been eaten away by the etchant.Thickness 120 ofFIG. 1B is substantially less than the original thickness of the wafer, substantially increasing the likelihood of bevel collapse. Furthermore, theblack silicon area 114 can trap contamination that may pollute the processing steps in the future. - To address the bevel collapse problem described above in etching or other type of material removal or punch-through processes, thick protective films or anti-etching sacrificial films at the substrate edge or bevel are used to minimize substrate bevel collapse. Another approach of wafer bevel protection utilizes a process kit known as a shadow ring, which is placed on top of bevel area of the wafer or slightly above the wafer. However, the shadow ring oftentimes introduces tilting, and particle issues. Accordingly, this process requires many stages to define the film at the substrate edge. This is problematic especially if the film deposition at the substrate edge or bevel requires separate special equipments.
-
FIGS. 2A-B illustrate an example of the problem in wafer bonding near the edge or bevel.FIG. 2A showslower wafer 202,upper wafer 204, and bondingmaterial 206. The bonding material is typically some type of organic material. In general, a Chemical Mechanical Polish (CMP) is performed after the wafer bonding process.FIG. 2B shows the post-CMP bonded wafers. Specifically,region 220 shows that the bonding material is exposed at the edge or bevel of the wafers. Having exposed bonding material can create side defects and other unpredictable effects, Furthermore,region 220 shows a negative slope near the edge or bevel of the wafers. For a variety of reasons, semiconductor manufacturers may prefer positive slope geometries near the edge of a wafer. The negative slope and the exposed bonding material may present other problems such as undercut issues or delamination issues. - To address the bevel edge negative slope problem. CMP may be employed to shape the edge or bevel back to a positive slope. However, this solution is costly, and does not solve the problem of the exposed bonding material.
- The present invention is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements and in which:
-
FIG. 1A is a schematic view of a substrate edge prior to a via etch. -
FIG. 1B is a schematic view of a substrate edge post a via etch. -
FIG. 2A is a schematic view of substrate edges post wafer bonding and prior to a CMP. -
FIG. 2B is a schematic view of substrate edges post wafer bonding and post-CMP. -
FIG. 3A shows, in accordance with an embodiment of the invention, a schematic view of substrate edge prior to a via etch using localized film deposition at the substrate edge. -
FIG. 3B shows, in accordance with an embodiment of the invention, a schematic view of substrate edge post a via etch using, localized film deposition at the substrate edge. -
FIG. 4 shows, in accordance with an embodiment of the invention, a schematic view of substrate edge post wafer bonding and post-CMP using localized film deposition at the substrate edge. -
FIG. 5A shows, in accordance with an embodiment of the invention, a generic machine for depositing protective film at bevel edge. -
FIG. 5B shows, in accordance with an embodiment of the invention, a magnified illustration of a ceramic part illustrated inFIG. 3A . -
FIG. 6 shows, in accordance with an embodiment of the invention, the method steps for creating protective film at bevel edge. -
FIG. 7 shows, in accordance with an embodiment of the invention, a generic machine ofFIG. 3A plus inductive antennas for in situ cleaning at the bevel edge. -
FIG. 8 shows, in accordance with an embodiment of the invention, the method steps for in situ inductive cleaning, post localized film deposition, - The present invention will now he described in detail with reference to a few embodiments thereof as illustrated in the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without some or all of these specific details. In other instances, well known process steps and/or structures have not been described in detail in order to not unnecessarily obscure the present invention.
- The present invention addresses at least the problems faced in via etching and wafer bonding. The invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers in a plasma chamber. The method includes adjusting an electrode gap between a movable electrode and a stationary electrode with a wafer disposed in between. The electrode gap is adjusted to a gap distance configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the wafer's bevel edge still may be formed. The method also includes flowing deposition gas into the plasma chamber. The method further includes maintaining, using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge. The method also includes generating the localized plasma from the deposition gas for depositing a film on the bevel edge.
- The invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers. The method includes adjusting the flow of deposition gas into a plasma chamber to a pressure configured to prevent plasma formation over a center portion of the wafer, the pressure also adjusted such that a plasma-sustainable condition around the bevel edge of the wafer is formed after the adjusting. The method also includes maintaining, using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge. The method further includes generating the localized plasma from the deposition gas for depositing a film on the bevel edge.
- The invention relates, in one embodiment, to a method of film deposition using localized plasma to protect the bevel edge of a wafer or wafers. The method includes adjusting an electrode gap between a movable electrode and a stationary electrode with the wafer disposed in between. The electrode gap is adjusted to a gap distance configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the bevel edge of the wafer may still be or is formed. The method also includes adjusting the flow of deposition gas into a plasma chamber to a pressure configured to prevent plasma formation over a center portion of the wafer, while a plasma-sustainable condition around the bevel edge of the wafer may still be or is formed. The method further includes maintaining,. using a heater, a chuck temperature that is configured to facilitate film deposition on the bevel edge. The method also includes generating the localized plasma from the deposition gas for depositing a film. on the bevel edge.
-
FIG. 3A illustrates the proposed solution to the via etching problem suggested inFIGS. 1A and 1B , as applied to awafer 300 prior to etching. There is also shown asubstrate edge area 302.Hard mask 306 remains on the central region of the wafer, while conformalprotective film 308 is deposited on the bevel edge to protect the bevel edge. -
FIG. 3B illustrates the proposed solution to the via etching problem suggested inFIGS. 1A and 1B , as applied to awafer 300 after etching. Here,hard mask 306 remains. Theprotective film 308 is worn away slightly, protecting the substrate underneath in thebevel edge region 312. This solves the problem of black silicon forming on the bevel edge, limiting the probability of break off or contaminant trapping. A comparison betweenFIG. 3A andFIG. 3B will show thatthickness 318 of the substrate edge prior to etching remains approximately the same asthickness 320 of the substrate edge post etching. -
FIG. 4 illustrates the proposed solution to the wafer bonding problem presented inFIGS. 2A and 213 .FIG. 4 shows the bondedwafers 400 after the Chemical Mechanical Polish (CMP) process.Lower wafer 402 is bonded by bondingmaterial 406 with upper wafer 414. Upper wafer 414 is grinded down by CMP, In this situation, most semiconductor manufacturers want to protect the bonding material while creating a positive slope on the edge of the bonded wafers.FIG. 4 demonstrates how localizedconformal film 418 deposited in thebevel edge region 420 may create the desired effects on the edge of the bonded wafers. -
FIG. 5A illustrates a generalized arrangement for depositing a protective film at the bevel edge of the wafer. Due to the need to deposit a precise conformal film on a challenging bevel edge topology and the need to refrain from depositing elsewhere, specialized equipment is necessary. The arrangement ofFIG. 5A includes a capacitively coupledchamber 500.Gas flow control 504 supplies gas or plasma to the edge area of awafer 502.Gas flow control 506 supplies gas or plasma to the central area of thewafer 502. Gas flow may be supplied through liquid gas delivery or vas phase delivery. The two gas flow controls 504 and 506 individually or together may change the differential pressure over the center portion of the wafer as compared to the edge portion of the wafer. The exhaust from the chamber may exit through theexhaust pump 508. -
Gap 510 represents the distance between theceramic cover 512 and thewafer 502. In the present invention,gap 510 is controlled such that the gap is insufficient for plasma formation. For example, a gap no larger than 1 mm cannot sustain plasma formation in sonic cases. The gap itself may be determined empirically based on the particulars of each chamber. Gas supplied by the gas flow controls 504 and 506 is turned into plasma by aRF source 520 that powers heater/chuck 524. Atop electrode 526 is disposed aboveceramic cover 512. Further,FIG. 5 ashows wafer 502 disposed above heater/chuck 524. - On the edge of the chamber is a grounded upper
extended electrode 536 and a grounded lower extendedelectrode 538.Liner 540 helps to protect lowerextended electrode 538 against deposition.Liner 540 may be formed of a suitable material compatible with the deposition process. RF currents may flow from the heater/chuck 524 through both the upperextended electrode 536 and lowerextended electrode 538, through the chamber wall, and return back to theRF source 520. Size-controllableceramic part 550 is disposed next to the heater/chuck 524. -
FIG. 5B illustrates the magnified view of the size-controllable ceramic part. 550. The size of theceramic part 550 may be adjusted to expose more or less of the under edge of thewafer 502 to the plasma for deposition purpose.FIG. 5B illustratesceramic part 550 and theceramic cover 512. If a semiconductor manufacturer wants to deposit more to the backside of thewafer 502 edge, the size ofceramic part 550 may be adjusted. For example, a smaller outer diameter ofceramic part 550 may allow more of the deposition to reach the underside of the bevel edge. The diameter ofceramic cover 512 may also be adjusted to determine the width of the bevel edge film deposition on the upper side of the wafer. For example, a smaller outer diameter ofceramic cover 512 may allow more deposition on the upper outer edge of the bevel. -
Ceramic cover 512 and thetop electrode 526 are movable (e.g., up and down) using a robot arm, a bellow, a belt, or other methods in order to allow for gap control. This mechanism is controlled by gap controller circuitry. The gap controller serves to control plasma formation in between the wafer and the top electrode of the chamber. The gap controller also assists in the insertion and the removal of the wafer to and from the plasma chamber. The actual mechanical movement to control the gap may be accomplished by a mechanical actuator, or by bellows, or by a belt-type gear, or the like. -
FIG. 6 shows, in accordance with an embodiment of the invention, the method steps for creating a protective film at the bevel edge. At afirst step 652, the silicon wafer is placed within the chamber via a robot arm mechanism Atstep 654, the gap between the upper ceramic cover and the wafer is adjusted to a plasma-inhibiting gap distance to ensure that plasma will not form over the center portion of the water. In an embodiment of the invention, the center portion of the wafer is the portion of the wafer with etched features, or is the part intended to have etched features. In another embodiment of the invention, the center portion of the wafer is the portion of the wafer that is substantially flat. - At
step 656, liquid or gas phase deposition gas is flowed into the plasma chamber, creating a pressure differential between the center portion of the chamber and the edge portion of the chamber. In an embodiment of the invention, the pressure differential is controlled by multiple gas inlets into the center and the edge portion of the plasma chamber, in an embodiment of the invention, the pressure differential and the specified electrode gap may sustain plasma in the vicinity of the edge region of the wafer, but not in the region between the center portion of the wafer and the upper electrode, The exact pressure differential and electrode gap may be pre-determined through testing, or may be determined real-time by a feedback control system capable of detecting. whether plasma is formed over the center portion of the wafer. The deposition gas used may be a precursor for a dielectric film, a conductor film, an organic film, or any other film used in the semiconductor industry. - At
step 658, RF-power to the heater and/or the chuck is turned on. At this stage, film deposition plasma should have formed on the bevel edge of the wafer. The heater temperature is controlled, for example, to minimize adhesion stress. Atstep 660, RF power and gas flow are turned off. Atstep 662, the electrode gap above the wafer is enlarged to facilitate wafer removal. Atstep 664, the wafer is removed by the robot arm mechanism. -
FIG. 7 shows, in accordance with an embodiment of the invention, a generalized implementation ofFIG. 3A plus inductive antennas for in situ cleaning at the bevel edge. The ability to perform in-situ cleaning is an important advantage in improving output.Gap 710 may be adjusted to optimize for cleaning. Localized plasma may be created byRF source 722 energizingcoil 724. In an embodiment, electrode 726 is formed of aluminum. Grounded upper and lowerextended electrodes -
FIG. 8 shows, in accordance with an embodiment of the invention, the method steps for in situ inductive cleaning, post localized film deposition. The combination of in-situ inductive cleaning (which creates high density cleaning plasma) in a substantially capacitive chamber provides many advantages. At afirst step 852, the electrode gap above the wafer in the plasma chamber is adjusted to provide space for wafer removal. At step 854, the electrode gap is adjusted again to a gap distance to govern how much of the cleaning plasma will encroach on the center portion of the plasma chamber. Atstep 856, the etchant cleaning gas flows into the plasma chamber. Atstep 858, the Transformer-Coupled Plasma (TCP) inductor coils are powered on for a certain period, of time to allow for the cleaning plasma to form and use the cleaning plasma to clean the plasma chamber. Atstep 860, the etchant cleaning gas is allowed to exhaust. - Advantages of the invention include the prevention of bevel collapse and the formation of black silicon on substrate edges during an etching process. Additional advantages include sealing off bonding materials post a wafer-bonding process. This conformal edge film deposition process further allows users to create a positive slope on the edges of two bonded wafers.
- Having disclosed exemplary embodiments and the best mode, modifications and variations may be made to the disclosed embodiments while remaining within the subject and spirit of the invention a defined by the following claims.
Claims (21)
1-20. (canceled)
21. An arrangement for depositing a protective film at a bevel edge of a substrate in a plasma chamber, comprising:
a gas delivery system for supplying gas into said plasma chamber;
a pair of electrodes including a movable electrode and a stationary electrode, wherein said substrate is disposed on one of said movable electrode and said stationary electrode;
a gap controller module configured for adjusting an electrode gap between said pair of electrodes to a gap distance configured to prevent plasma formation over a center portion of said substrate, said gap distance also dimensioned such that a plasma-sustainable condition around said bevel edge of said substrate is created after said adjusting, and a heater disposed below said substrate and powered by an RE source, wherein said heater heats said substrate to a temperature conducive for facilitating film deposition on said bevel edge of said substrate.
22. The arrangement of claim 21 wherein said plasma chamber is a capacitively coupled chamber.
23. The arrangement of claim 21 further including a feedback control system configured to detect whether plasma is formed over said center portion of said substrate.
24. The arrangement of claim 21 further including a first gas flow control configured for supplying gas to an edge area of said substrate.
25. The arrangement of claim 24 further including a second gas flow control configured for supplying gas to a central area of said substrate.
26. The arrangement of claim 21 wherein said gas interacts with power provided by said RF source to generate plasma.
27. The arrangement of claim 21 wherein said center portion is substantially equal to an area on said substrate where features are formed.
28. The arrangement of claim 21 wherein said center portion is substantially equal to an area on said substrate where the surface of said substrate is substantially fiat,
29. The arrangement of claim 21 wherein said plasma chamber is configured perform localized etching as well as localized deposition.
30. The arrangement of claim 21 further including a ceramic component positioned adjacent to said heater, wherein said ceramic component has a dimension that is adjustable to control the exposure of the lower outer edge of said substrate to a plasma. formed around said bevel edge of said substrate.
31. The arrangement of claim 21 wherein said movable electrode includes a ceramic cover, wherein dimension of said ceramic cover is adjustable to control the width of said protective film on the upper outer edge of said substrate.
32. The arrangement of claim 21 wherein said electrode gap is adjusted by one of a mechanical actuator and a bellows and a belt-type gear.
33. The arrangement of claim 21 wherein said protective film is one of a. dielectric film, a conductor film, and an organic film.
34. The arrangement of claim 21 further including a set of inductive antennas configured for performing in-situ cleaning of said plasma chamber.
35. The arrangement of claim 34 wherein said set of inductive antenna is a set of Transformer-Coupled Plasma (TCP) inductor coils.
36. An arrangement for depositing a protective film at a bevel edge of a substrate in a plasma chamber, comprising:
a gas delivery system for supplying gas into said plasma chamber;
a pair of electrodes including a movable electrode and a stationary electrode, wherein said substrate is disposed on one of said pair of electrodes;
a plurality of gas flow controls configured for adjusting flow of said gas into said plasma chamber to a pressure configured to prevent plasma formation over a center portion of said substrate, said pressure also adjusted such that a plasma-sustainable condition around said bevel edge of said substrate is created after said adjusting; and
a heater disposed below said substrate and powered by an RF source, Wherein said heater is maintained at a chuck temperature conducive for facilitating film deposition on said bevel edge of said substrate.
37. The arrangement of claim 36 further including a feedback control system configured to detect whether plasma is formed over said center portion of said substrate.
38. The arrangement of claim 36 further including a ceramic component positioned adjacent to said heater, wherein said ceramic component has a dimension that is adjustable to control the exposure of the lower outer edge of said substrate to a plasma formed around said bevel edge of said substrate.
39. The arrangement of claim 36 further including a set of inductive antenna configured for performing in-situ cleaning of said plasma chamber.
40. The arrangement of claim 36 wherein said protective film is one of a dielectric film, a conductor film, and an organic film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/959,595 US20130312913A1 (en) | 2010-10-19 | 2013-08-05 | Arrangement for depositing bevel protective film |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/907,149 US8501283B2 (en) | 2010-10-19 | 2010-10-19 | Methods for depositing bevel protective film |
US13/959,595 US20130312913A1 (en) | 2010-10-19 | 2013-08-05 | Arrangement for depositing bevel protective film |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/907,149 Continuation US8501283B2 (en) | 2010-10-19 | 2010-10-19 | Methods for depositing bevel protective film |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130312913A1 true US20130312913A1 (en) | 2013-11-28 |
Family
ID=45934522
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/907,149 Active 2031-06-23 US8501283B2 (en) | 2010-10-19 | 2010-10-19 | Methods for depositing bevel protective film |
US13/959,595 Abandoned US20130312913A1 (en) | 2010-10-19 | 2013-08-05 | Arrangement for depositing bevel protective film |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/907,149 Active 2031-06-23 US8501283B2 (en) | 2010-10-19 | 2010-10-19 | Methods for depositing bevel protective film |
Country Status (7)
Country | Link |
---|---|
US (2) | US8501283B2 (en) |
JP (1) | JP5982383B2 (en) |
KR (1) | KR101892310B1 (en) |
CN (1) | CN103460347B (en) |
SG (1) | SG189223A1 (en) |
TW (1) | TWI555070B (en) |
WO (1) | WO2012054577A2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8603908B2 (en) * | 2011-05-06 | 2013-12-10 | Lam Research Corporation | Mitigation of silicide formation on wafer bevel |
FR3003395B1 (en) * | 2013-03-15 | 2015-05-29 | Commissariat Energie Atomique | METHOD AND PRODUCTION OF A SUBSTRATE PROVIDED WITH EDGE PROTECTION |
KR102295029B1 (en) | 2015-03-31 | 2021-08-27 | 삼성전자주식회사 | Method of manufacturing semiconductor devices |
US9741684B2 (en) | 2015-08-17 | 2017-08-22 | International Business Machines Corporation | Wafer bonding edge protection using double patterning with edge exposure |
JP6552404B2 (en) * | 2015-12-17 | 2019-07-31 | 東京エレクトロン株式会社 | Substrate processing method, substrate processing system, substrate processing apparatus, and computer readable storage medium storing substrate processing program |
US10892404B1 (en) * | 2019-07-09 | 2021-01-12 | International Business Machines Corporation | Sacrificial buffer layer for metal removal at a bevel edge of a substrate |
GB202001781D0 (en) | 2020-02-10 | 2020-03-25 | Spts Technologies Ltd | Pe-Cvd apparatus and method |
CN113764328B (en) * | 2020-06-02 | 2024-06-21 | 拓荆科技股份有限公司 | Apparatus and method for processing wafer |
TWI766595B (en) * | 2021-02-25 | 2022-06-01 | 聯華電子股份有限公司 | Method for bonding two semiconductor structures |
US11830824B2 (en) * | 2021-03-26 | 2023-11-28 | Applied Materials, Inc. | Edge protection on semiconductor substrates |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050173067A1 (en) * | 2003-05-12 | 2005-08-11 | Dong-Soo Lim | Plasma etching chamber and plasma etching system using same |
US20070026540A1 (en) * | 2005-03-15 | 2007-02-01 | Nooten Sebastian E V | Method of forming non-conformal layers |
US20080156772A1 (en) * | 2006-12-29 | 2008-07-03 | Yunsang Kim | Method and apparatus for wafer edge processing |
US20080179297A1 (en) * | 2007-01-26 | 2008-07-31 | Lam Research Corporation | Bevel etcher with gap control |
US20080182412A1 (en) * | 2007-01-26 | 2008-07-31 | Lam Research Corporation | Configurable bevel etcher |
US20080185105A1 (en) * | 2007-02-02 | 2008-08-07 | Lam Research Corporation | Apparatus for defining regions of process exclusion and process performance in a process chamber |
US20080277064A1 (en) * | 2006-12-08 | 2008-11-13 | Tes Co., Ltd. | Plasma processing apparatus |
US20080311758A1 (en) * | 2007-06-14 | 2008-12-18 | Lam Research Corporation | Methods of and apparatus for protecting a region of process exlusion adjacent to a region of process performance in a process chamber |
US20090014127A1 (en) * | 2007-07-12 | 2009-01-15 | Applied Materials, Inc. | Systems for plasma enhanced chemical vapor deposition and bevel edge etching |
US20090142513A1 (en) * | 2006-07-11 | 2009-06-04 | Tokyo Electron Limited | Film formation method, cleaning method and film formation apparatus |
US20110024399A1 (en) * | 2008-04-07 | 2011-02-03 | Charm Engineering Co., Ltd. | Plasma processing apparatus and method for plasma processing |
US20110146703A1 (en) * | 2009-12-17 | 2011-06-23 | Lam Research Corporation | Method and apparatus for processing bevel edge |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06283500A (en) * | 1993-03-30 | 1994-10-07 | Hitachi Ltd | Semiconductor production device and semiconductor device |
US6066570A (en) * | 1998-12-10 | 2000-05-23 | Siemens Aktiengesellschaft | Method and apparatus for preventing formation of black silicon on edges of wafers |
US6489249B1 (en) * | 2000-06-20 | 2002-12-03 | Infineon Technologies Ag | Elimination/reduction of black silicon in DT etch |
US7256148B2 (en) | 2005-05-12 | 2007-08-14 | International Business Machines Corporation | Method for treating a wafer edge |
CN101278072A (en) | 2005-08-02 | 2008-10-01 | 麻省理工学院 | Method of using NF3 for removing surface deposits |
US8083890B2 (en) * | 2005-09-27 | 2011-12-27 | Lam Research Corporation | Gas modulation to control edge exclusion in a bevel edge etching plasma chamber |
DE102005063089A1 (en) | 2005-12-30 | 2007-07-12 | Advanced Micro Devices, Inc., Sunnyvale | A method of reducing contamination by providing an etch stop layer on the substrate edge |
US7879184B2 (en) * | 2006-06-20 | 2011-02-01 | Lam Research Corporation | Apparatuses, systems and methods for rapid cleaning of plasma confinement rings with minimal erosion of other chamber parts |
KR20080053167A (en) * | 2006-12-08 | 2008-06-12 | 주식회사 테스 | Plasma processing apparatus |
US8137501B2 (en) | 2007-02-08 | 2012-03-20 | Lam Research Corporation | Bevel clean device |
KR101459762B1 (en) * | 2007-12-27 | 2014-11-07 | 메이플 비젼 테크놀로지스 인크. | method of reading optical information, method of recording optical information |
US8616390B2 (en) * | 2008-11-12 | 2013-12-31 | Theodosios Kountotsis | Triple chamber bottle and method of manufacturing the same |
US20100116788A1 (en) * | 2008-11-12 | 2010-05-13 | Lam Research Corporation | Substrate temperature control by using liquid controlled multizone substrate support |
DE102009015749B3 (en) * | 2009-03-31 | 2011-01-20 | Globalfoundries Dresden Module One Llc & Co. Kg | Increasing the adhesion of inter-layer dielectric materials of semiconductor devices by suppressing silicide formation at the substrate edge |
-
2010
- 2010-10-19 US US12/907,149 patent/US8501283B2/en active Active
-
2011
- 2011-10-12 TW TW100136954A patent/TWI555070B/en active
- 2011-10-19 SG SG2013024435A patent/SG189223A1/en unknown
- 2011-10-19 JP JP2013535032A patent/JP5982383B2/en active Active
- 2011-10-19 WO PCT/US2011/056849 patent/WO2012054577A2/en active Application Filing
- 2011-10-19 KR KR1020137009814A patent/KR101892310B1/en active IP Right Grant
- 2011-10-19 CN CN201180049955.0A patent/CN103460347B/en active Active
-
2013
- 2013-08-05 US US13/959,595 patent/US20130312913A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050173067A1 (en) * | 2003-05-12 | 2005-08-11 | Dong-Soo Lim | Plasma etching chamber and plasma etching system using same |
US20070026540A1 (en) * | 2005-03-15 | 2007-02-01 | Nooten Sebastian E V | Method of forming non-conformal layers |
US20090142513A1 (en) * | 2006-07-11 | 2009-06-04 | Tokyo Electron Limited | Film formation method, cleaning method and film formation apparatus |
US20080277064A1 (en) * | 2006-12-08 | 2008-11-13 | Tes Co., Ltd. | Plasma processing apparatus |
US20080156772A1 (en) * | 2006-12-29 | 2008-07-03 | Yunsang Kim | Method and apparatus for wafer edge processing |
US20080179297A1 (en) * | 2007-01-26 | 2008-07-31 | Lam Research Corporation | Bevel etcher with gap control |
US20080182412A1 (en) * | 2007-01-26 | 2008-07-31 | Lam Research Corporation | Configurable bevel etcher |
US20080185105A1 (en) * | 2007-02-02 | 2008-08-07 | Lam Research Corporation | Apparatus for defining regions of process exclusion and process performance in a process chamber |
US20080311758A1 (en) * | 2007-06-14 | 2008-12-18 | Lam Research Corporation | Methods of and apparatus for protecting a region of process exlusion adjacent to a region of process performance in a process chamber |
US20090014127A1 (en) * | 2007-07-12 | 2009-01-15 | Applied Materials, Inc. | Systems for plasma enhanced chemical vapor deposition and bevel edge etching |
US20110024399A1 (en) * | 2008-04-07 | 2011-02-03 | Charm Engineering Co., Ltd. | Plasma processing apparatus and method for plasma processing |
US20110146703A1 (en) * | 2009-12-17 | 2011-06-23 | Lam Research Corporation | Method and apparatus for processing bevel edge |
Also Published As
Publication number | Publication date |
---|---|
WO2012054577A3 (en) | 2013-10-24 |
CN103460347A (en) | 2013-12-18 |
TW201234449A (en) | 2012-08-16 |
US8501283B2 (en) | 2013-08-06 |
CN103460347B (en) | 2016-10-26 |
US20120094502A1 (en) | 2012-04-19 |
KR101892310B1 (en) | 2018-08-27 |
SG189223A1 (en) | 2013-05-31 |
JP5982383B2 (en) | 2016-08-31 |
TWI555070B (en) | 2016-10-21 |
WO2012054577A2 (en) | 2012-04-26 |
KR20130136992A (en) | 2013-12-13 |
JP2014503986A (en) | 2014-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8501283B2 (en) | Methods for depositing bevel protective film | |
KR101441720B1 (en) | Edge electrodes with dielectric covers | |
KR101896491B1 (en) | Plasma etching device, and plasma etching method | |
JP5390846B2 (en) | Plasma etching apparatus and plasma cleaning method | |
KR101433957B1 (en) | Apparatus for the removal of a set of byproducts from a substrate edge and methods therefor | |
KR101854925B1 (en) | Method and apparatus for processing bevel edge | |
KR100540052B1 (en) | Plasma treating device and substrate mounting table | |
US20130032478A1 (en) | Low sloped edge ring for plasma processing chamber | |
US20110011534A1 (en) | Apparatus for adjusting an edge ring potential during substrate processing | |
EP3114703B1 (en) | Method for plasma dicing a semi-conductor wafer | |
KR20100099219A (en) | Silicon carbide focus ring for plasma etching system | |
JP2007012734A (en) | Method and device for plasma etching | |
KR20160030812A (en) | plasma processing equipment | |
WO2016167852A1 (en) | Edge ring for bevel polymer reduction | |
JP2016522539A (en) | Capacitively coupled plasma device with uniform plasma density | |
US8974600B2 (en) | Deposit protection cover and plasma processing apparatus | |
JP2008060487A (en) | Plasma processing apparatus | |
KR101098858B1 (en) | Cleaning method and vacuum processing apparatus | |
US20170032988A1 (en) | Plasma treatment apparatus | |
JP7482657B2 (en) | CLEANING METHOD AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD | |
JP2004047500A (en) | Plasma processing apparatus and method of initializing the same | |
KR101559030B1 (en) | Method for treating substrate | |
CN117795658A (en) | Semiconductor chamber component with multilayer coating | |
CN116169050A (en) | Substrate processing apparatus and substrate processing method using the same | |
KR20080083956A (en) | Vacuum apparatus of semiconductor device manufacturing equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LAM RESEARCH CORPORATION, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIN, NEUNGHO;CHUNG, PATRICK;KIM, YUNSANG;SIGNING DATES FROM 20130816 TO 20130819;REEL/FRAME:031418/0579 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |