WO2005056874A1 - Anordnung zur wärmebehandlung von siliziumscheiben in einer prozesskammer - Google Patents
Anordnung zur wärmebehandlung von siliziumscheiben in einer prozesskammer Download PDFInfo
- Publication number
- WO2005056874A1 WO2005056874A1 PCT/DE2004/002700 DE2004002700W WO2005056874A1 WO 2005056874 A1 WO2005056874 A1 WO 2005056874A1 DE 2004002700 W DE2004002700 W DE 2004002700W WO 2005056874 A1 WO2005056874 A1 WO 2005056874A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- process chamber
- insert
- silicon wafers
- arrangement
- liner plate
- Prior art date
Links
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
- H01J37/32431—Constructional details of the reactor
-
- 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
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
-
- 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
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67115—Apparatus for thermal treatment mainly by radiation
Definitions
- the invention relates to an arrangement for the heat treatment of silicon wafers in a process chamber, in which the silicon wafer to be coated is surrounded by liner plates to protect the process chamber against precipitation.
- layer material evaporates from the silicon wafer and is deposited in the process chamber of the RTP system.
- This precipitation changes the optical properties of the process chamber. These changes can lead to the absolute temperature on your disk being changed and / or the temperature homogeneity on the disk decreasing with increasing number of processed disks.
- liner plates made of optically transparent quartz glass are installed in the chamber, preferably above and below the silicon wafer to be treated, in the prior art.
- the evaporated material is deposited on these liner plates and no longer in the process chamber itself. These plates can easily be replaced. The cost-intensive replacement of the process chamber itself is no longer necessary.
- the optical transparency of the liner plates is reduced with the increasing number of processed silicon wafers due to the precipitation, the one above the silicon wafer arranged liner plate is occupied much more than the liner plate arranged under the silicon wafers. Due to this uneven precipitation, there are high local differences in the transparency of the plates.
- the liner plates are replaced at regular intervals.
- the liner sheets can either be replaced with new sheets or processed using appropriate process steps.
- the process steps for preparing the liner plates consist, for example, of a mechanical cleaning step, in which the plate is cleaned by wiping, and a chemical cleaning step, in which the plate is wet-chemically cleaned.
- the initial state of the liner plate with regard to its optical parameters can no longer be produced by such a cleaning process, which leads to a decrease in the transparency of the liner plate with an increasing number of cleaning processes.
- the use of new plates becomes necessary.
- the invention is therefore based on the object of specifying an arrangement for the heat treatment of silicon wafers in a process chamber, which ensures protection of the process chamber from deposits and reduces the outlay and the costs for maintenance.
- the object is achieved in an arrangement for the heat treatment of silicon wafers in a process chamber of the type mentioned at the outset in that the. Liner plate is split.
- the liner plates consist of at least two parts. It is therefore possible to replace the liner plate parts separately, depending on the degree of wear. Due to the possibility of partial replacement of liner plate parts, only the maintenance costs for the part to be replaced are incurred, which leads to a reduction in maintenance costs.
- the liner plate consists of a rectangular plate, which is provided with an opening for an insert, the insert completely closing the opening.
- the split liner plate arranged in the process chamber above the treating silicon wafers is provided with a circular opening.
- An insert which also consists of the material of the liner plate, is designed in such a way that it can be inserted exactly into the opening of the liner plate.
- the unit consisting of the rectangular liner plate with the opening and the insert, has the same properties in the process chamber as a comparable undivided liner plate.
- the rectangular liner plate has corresponding holders so that the insert can be fixed in the opening of the liner plate.
- the opening is circular.
- One design option for the divided liner plate consists in a circular opening within the rectangular liner plate, with a corresponding insert, which has a diameter which corresponds approximately to the silicon wafer to be treated.
- This dimensioning of the opening and the insert has the advantage that the insert is large enough to accommodate evaporated material above the silicon wafer. This means that only cleaning or replacement of the insert is required if necessary.
- the liner plate and the insert consist of quartz glass.
- Both the rectangular liner plate with the opening and the associated insert preferably consist of quartz glass and thus have the optical properties required in the process chamber.
- the insert is a coated insert.
- Another advantage of the circular design of the insert which is approximately the size of a silicon wafer, is the possibility of using the insert in a conventional manner Semiconductor manufacturing plant to be coated. If the insert is coated with silicon nitride, for example, it has an improved diffusion barrier against evaporated material compared to a quartz glass surface. An insert coated in this way can be cleaned better and is more resistant to devitrification, which increases the service life of the insert.
- silicon nitride has the further advantages that the optical transparency necessary for use in the process chamber remains, that silicon nitride is semiconductor-compatible and therefore there is no risk of contamination, and that silicon nitride has very good adhesion to quartz glass.
- the silicon nitride coating loses its effectiveness after frequent cleaning, it can be replaced without damaging the quartz glass insert.
- the silicon nitride is wet-etched from the quartz glass insert.
- the quartz glass is not damaged by this process, which is common in semiconductor production.
- the silicon nitride coating is then renewed, for example in an LPCVD system.
- Fig. 1 shows a schematic cross section through an RTP process chamber
- Fig. 2 shows an arrangement according to the invention for the heat treatment of silicon wafers in a process chamber.
- Figure 1 is the schematic cross section through a RTP process chamber 1 known from the prior art is shown, in which silicon wafers 2 are subjected to a heat treatment.
- the silicon wafers 2 are applied to a wafer carrier 3 and introduced into the quartz chamber 4, which is surrounded by quartz lamps 5.
- a liner plate 6 for protecting the quartz chamber 4 against precipitation is located above and below the silicon wafers 2 to be treated.
- FIG. 2 shows an arrangement according to the invention for the heat treatment of silicon wafers in a process chamber.
- the disk carrier 3 is shown, above which the upper liner plate 7, which is divided according to the invention, is arranged.
- This consists of the rectangular liner plate 7 with a circular opening and the coated insert 8 arranged in the opening.
- the arrangement of a liner plate 7 divided according to the invention under the disk carrier 3 represents a further possibility.
- the arrangement shown in FIG. 2 is used for implementation of the heat treatment process introduced into the process chamber 1. If a corresponding number of silicon wafers 2 have been treated, the coated insert 8 causes clouding due to the precipitation.
- Reference list 1 process chamber 2 silicon wafer 3 wafer carrier 4 quartz chamber 5 quartz lamps 6 liner plate 7 split liner plate 8 insert
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112004002735T DE112004002735A5 (de) | 2003-12-09 | 2004-12-09 | Anordnung zur Wärmebehandlung von Siliziumscheiben in einer Prozesskammer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20319104U DE20319104U1 (de) | 2003-12-09 | 2003-12-09 | Anordnung zur Wärmebehandlung von Siliziumscheiben in einer Prozesskammer |
DE20319104.8 | 2003-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005056874A1 true WO2005056874A1 (de) | 2005-06-23 |
Family
ID=32103633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002700 WO2005056874A1 (de) | 2003-12-09 | 2004-12-09 | Anordnung zur wärmebehandlung von siliziumscheiben in einer prozesskammer |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE20319104U1 (de) |
WO (1) | WO2005056874A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6192827B1 (en) * | 1998-07-03 | 2001-02-27 | Applied Materials, Inc. | Double slit-valve doors for plasma processing |
US20010004478A1 (en) * | 1996-07-12 | 2001-06-21 | Jun Zhao | Plasma treatment of titanium nitride formed by chemical vapor deposition |
WO2001052303A1 (en) * | 2000-01-11 | 2001-07-19 | E.I. Dupont De Nemours And Company | Liner for semiconductor etching chamber |
US6301434B1 (en) * | 1998-03-23 | 2001-10-09 | Mattson Technology, Inc. | Apparatus and method for CVD and thermal processing of semiconductor substrates |
US20030094446A1 (en) * | 2001-04-17 | 2003-05-22 | Mattson Technology, Inc. | Rapid thermal processing system for integrated circuits |
US20030198749A1 (en) * | 2002-04-17 | 2003-10-23 | Applied Materials, Inc. | Coated silicon carbide cermet used in a plasma reactor |
-
2003
- 2003-12-09 DE DE20319104U patent/DE20319104U1/de not_active Expired - Lifetime
-
2004
- 2004-12-09 WO PCT/DE2004/002700 patent/WO2005056874A1/de active Application Filing
- 2004-12-09 DE DE112004002735T patent/DE112004002735A5/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010004478A1 (en) * | 1996-07-12 | 2001-06-21 | Jun Zhao | Plasma treatment of titanium nitride formed by chemical vapor deposition |
US6301434B1 (en) * | 1998-03-23 | 2001-10-09 | Mattson Technology, Inc. | Apparatus and method for CVD and thermal processing of semiconductor substrates |
US6192827B1 (en) * | 1998-07-03 | 2001-02-27 | Applied Materials, Inc. | Double slit-valve doors for plasma processing |
WO2001052303A1 (en) * | 2000-01-11 | 2001-07-19 | E.I. Dupont De Nemours And Company | Liner for semiconductor etching chamber |
US20030094446A1 (en) * | 2001-04-17 | 2003-05-22 | Mattson Technology, Inc. | Rapid thermal processing system for integrated circuits |
US20030198749A1 (en) * | 2002-04-17 | 2003-10-23 | Applied Materials, Inc. | Coated silicon carbide cermet used in a plasma reactor |
Also Published As
Publication number | Publication date |
---|---|
DE20319104U1 (de) | 2004-04-08 |
DE112004002735A5 (de) | 2007-05-24 |
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