DE102020105538A1 - Device for holding a substrate in a CVD reactor - Google Patents
Device for holding a substrate in a CVD reactor Download PDFInfo
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- DE102020105538A1 DE102020105538A1 DE102020105538.2A DE102020105538A DE102020105538A1 DE 102020105538 A1 DE102020105538 A1 DE 102020105538A1 DE 102020105538 A DE102020105538 A DE 102020105538A DE 102020105538 A1 DE102020105538 A1 DE 102020105538A1
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- substrate
- substrate holder
- transport ring
- underside
- grooves
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- 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
- C23C16/458—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 characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4581—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 characterised by the method used for supporting substrates in the reaction chamber characterised by material of construction or surface finish of the means for supporting the substrate
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- 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
- C23C16/458—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 characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4584—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally the substrate being rotated
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- 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
- C23C16/458—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 characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4585—Devices at or outside the perimeter of the substrate support, e.g. clamping rings, shrouds
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- 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
- C23C16/458—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 characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4586—Elements in the interior of the support, e.g. electrodes, heating or cooling devices
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- 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
- H01L21/673—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 using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/67346—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 using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders characterized by being specially adapted for supporting a single substrate or by comprising a stack of such individual supports
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- 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
- H01L21/683—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 for supporting or gripping
- H01L21/687—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68735—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge profile or support profile
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- 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
- H01L21/683—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 for supporting or gripping
- H01L21/687—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68771—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by supporting more than one semiconductor substrate
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Die Erfindung betrifft eine Vorrichtung zur Lagerung eines Substrates (14) in einem CVD-Reaktor mit einem einen kreisförmigen Grundriss aufweisenden Substrathalter (1), der eine an eine Umfangsfläche (6) angrenzende, gegenüber einem Zentralbereich (4) einer Oberseite höhenverminderte Stufe (5) aufweist, welche eine Stufenfläche (3) ausbildet, auf welcher ein die zentrale Oberseite (4) umgebender Transportring (7) mit zumindest einem radial inneren Bereich (8') einer Unterseite (8) aufliegt, der eine an eine radial innere Innenfläche (13) angrenzende, von einer Flanke (10) umgebende Tragfläche (9) zum tragenden Unterstützen eines Randbereichs (15) des Substrates (14) und eine von der Innenfläche (13) wegweisende Außenfläche (12) aufweist, wobei sich bei einem auf der Tragfläche (9) aufliegenden Substrat (14) zwischen der Innenfläche (13), dem Zentralbereich (4) und einer Unterseite (16) des Substrates (14) ein Volumen (17) bildet. Um das Substrat (14) bei einem Wechsel des Gasdrucks im CVD-Reaktor gegen Durchbiegen oder dergleichen zu schützen, sind zwischen Volumen und Umgebung Entlüftungskanäle (19, 20, 21) vorgesehen.The invention relates to a device for storing a substrate (14) in a CVD reactor with a substrate holder (1) which has a circular outline and which has a step (5) adjoining a peripheral surface (6) and reduced in height compared to a central area (4) of an upper side ), which forms a step surface (3) on which a transport ring (7) surrounding the central upper side (4) rests with at least one radially inner region (8 ') of an underside (8), which is connected to a radially inner inner surface ( 13) has an adjoining supporting surface (9) surrounded by a flank (10) for supporting an edge region (15) of the substrate (14) and an outer surface (12) pointing away from the inner surface (13), one on the supporting surface (9) resting substrate (14) forms a volume (17) between the inner surface (13), the central region (4) and an underside (16) of the substrate (14). In order to protect the substrate (14) against bending or the like when the gas pressure in the CVD reactor changes, ventilation channels (19, 20, 21) are provided between the volume and the environment.
Description
Gebiet der TechnikField of technology
Die Erfindung betrifft einen Substrathalter, einen Transportring und eine aus Substrathalter und Transportring bestehende Vorrichtung zur Lagerung eines Substrates in einem CVD-Reaktor. Die Erfindung betrifft insbesondere eine Vorrichtung zur Lagerung eines Substrates in einem CVD-Reaktor mit einem einen kreisförmigen Grundriss aufweisenden Substrathalter, der eine an eine Umfangsfläche angrenzende, gegenüber einer zentralen Oberseite höhenverminderte Stufe aufweist, welche eine Stufenfläche ausbildet, auf welcher ein die zentrale Oberseite umgebender Transportring mit zumindest einem radial inneren Bereich einer Unterseite aufliegt, der eine an eine radial innere Innenfläche angrenzende, von einer Flanke umgebende Tragfläche zum tragenden Unterstützen eines Randbereichs des Substrates und eine von der Innenfläche wegweisende Außenfläche aufweist, wobei sich bei einem auf der Tragfläche aufliegenden Substrat sich zwischen der Innenfläche, dem Zentralbereich und einer Unterseite des Substrates ein Volumen bildet.The invention relates to a substrate holder, a transport ring and a device consisting of a substrate holder and a transport ring for storing a substrate in a CVD reactor. The invention relates in particular to a device for storing a substrate in a CVD reactor with a substrate holder having a circular outline, which has a step adjoining a circumferential surface, which is reduced in height compared to a central upper side and which forms a step surface on which a step surrounding the central upper side Transport ring with at least one radially inner area of an underside rests, which has a supporting surface adjoining a radially inner inner surface, surrounded by a flank for supporting an edge area of the substrate and an outer surface pointing away from the inner surface, with a substrate resting on the supporting surface a volume is formed between the inner surface, the central area and an underside of the substrate.
Die Erfindung betrifft ferner einen Substrathalter zur Lagerung eines Substrates in einem CVD-Reaktor, wobei der Substrathalter einen kreisförmigen Grundriss, eine an eine Umfangsfläche angrenzende, gegenüber einer zentralen Oberseite höhenverminderte Stufe und eine von dieser ausgebildeten Stufenfläche zur Lagerung eines Transportrings aufweist.The invention further relates to a substrate holder for storing a substrate in a CVD reactor, the substrate holder having a circular outline, a step adjoining a circumferential surface and a step reduced in height compared to a central upper side, and a step surface formed by this for mounting a transport ring.
Die Erfindung betrifft ferner einen Transportring zur Lagerung eines Substrates in einem CVD-Reaktor, wobei der Transportring eine radial innere Innenfläche, eine daran angrenzende Tragfläche zur Lagerung des Substrates, eine die Tragfläche umgebende Flanke, eine Außenfläche und eine Unterseite mit einem radial inneren Bereich zur Auflage auf einem Substrathalter aufweist.The invention also relates to a transport ring for storing a substrate in a CVD reactor, the transport ring having a radially inner inner surface, an adjoining supporting surface for supporting the substrate, a flank surrounding the supporting surface, an outer surface and an underside with a radially inner region Has support on a substrate holder.
Stand der TechnikState of the art
Die
Aus den
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung derart weiterzubilden, dass das Substrat bei einem Wechsel eines Gasdrucks in der Prozesskammer geringer mechanisch beansprucht wird, wobei insbesondere vorgesehen ist, dass Maßnahmen zur Verminderung einer mechanischen Beanspruchung des Substrates bei einem Druckwechsel in einfacher Weise zu fertigen sind und/oder ein derart weitergebildeter Substrathalter oder Transportring einfach gewartet werden kann.The invention is based on the object of developing a generic device in such a way that the substrate is less mechanically stressed when there is a change in gas pressure in the process chamber are finished and / or such a further developed substrate holder or transport ring can be easily serviced.
Gelöst wird die Aufgabe durch die in den Ansprüchen angegebene Erfindung, wobei die Unteransprüche nicht nur vorteilhafte Weiterbildungen der nebengeordneten Ansprüche, sondern auch eigenständige Lösungen der Aufgabe darstellen.The object is achieved by the invention specified in the claims, the subclaims not only representing advantageous developments of the independent claims, but also independent solutions to the problem.
Gemäß einem ersten Aspekt der Erfindung werden Entlüftungskanäle vorgeschlagen, die das sich zwischen der Unterseite des Substrates und dem Zentralbereich der Oberseite des Substrathalters ausbildende Volumen mit einer Umgebung verbinden, sodass sich bei einem Druckwechsel innerhalb des Gehäuses des CVD-Reaktors ein Gasfluss zwischen dem Volumen und der Umgebung ausbilden kann, sodass zwischen Volumen und Umgebung ein Druckausgleich stattfinden kann. Die Entlüftungskanäle können in gleichmäßiger Umfangsverteilung um ein Zentrum des Substrathalters angeordnet sein. Sie können sich in Radialrichtung erstrecken und einen Winkelabstand voneinander besitzen, der bevorzugt 180 Grad, 120 Grad, 90 Grad, 60 Grad, 45 Grad oder 30 Grad beträgt. Es sind bevorzugt mehrere Entlüftungskanäle vorgesehen, die untereinander in azimutaler Richtung bezogen auf eine Figurenachse des Substrathalters oder des Transportrings denselben Winkelabstand zueinander haben. Der Substrathalter und/oder der Transportring können aus einem keramischen Werkstoff oder aus Graphit bestehen. Sie können eine Oberflächenbeschichtung aufweisen. Der Transportring und/oder der Substrathalter sind bevorzugt aus einem Material gefertigt, welches sich durch ein spanabhebendes Verfahren bearbeiten lässt. Der Substrathalter kann einen kreisförmigen Grundriss aufweisen. Er bildet eine sich um den Zentralbereich der Oberseite erstreckende Stufe aus, an die sich eine Stufenfläche anschließt, auf der der bevorzugt kreisförmige Transportring derart aufliegt, dass ein radial äußerer Bereich der Unterseite frei über eine Umfangsfläche des Substrathalters ragt, um so von einem Greifarm untergriffen werden zu können. Gemäß einem zweiten Aspekt der Erfindung, dessen technische Merkmale mit den technischen Merkmalen des ersten Aspektes der Erfindung kombiniert werden können, wird vorgeschlagen, dass die Entlüftungskanäle von Nuten ausgebildet sind. Diese Nuten sind bevorzugt längliche Vertiefungen, beispielsweise Rillen, die zwei aufeinander zu gerichtete Wände und einen Boden aufweisen. Die Nuten sind auf ihrer vom Boden weggerichteten Seite offen, sodass sie durch ein spanabhebendes Verfahren, beispielsweise Fräsen, gefertigt werden können. Die Nuten erstrecken sich bevorzugt in einer der beiden Flächen, die berührend aufeinanderliegen, wenn der Transportring auf dem Substrathalter aufliegt. Die Nuten können sich somit in der Stufenfläche erstrecken, auf der der Transportring mit seiner Unterseite und insbesondere mit seinem radial inneren Bereich der Unterseite aufliegt. Die Nuten können sich auch in der Unterseite des Transportrings erstrecken. Sie werden dann von der jeweils anderen Fläche, also der Unterseite des Transportrings oder der Stufenfläche verschlossen. Die stirnseitigen Enden der Nuten sind offen. Es kann vorgesehen sein, dass sich die in die Stufenfläche eingebrachten Nuten bis zur Stufe erstrecken, die eine sich daran anschließende Nut ausbildet, die sich von der Stufenfläche bis zum Zentralbereich erstreckt. Eine Höhe der Nut kann geringer sein, als eine Höhe der Stufe. Bevorzugt ist die Höhe der Nut, also der Abstand von dem Boden der Nut bis zur Öffnung der Nut größer, als die Höhe der Stufe zwischen Stufenfläche und Zentralbereich der Oberseite, sodass der von der Nut ausgebildete Entlüftungskanal geradlinig in das Volumen zwischen Unterseite des Substrates und Zentralbereich der Oberseite des Substrathalters mündet. Gemäß einem dritten Aspekt der Erfindung werden die Entlüftungskanäle von Bohrungen ausgebildet. Die Bohrungen erstrecken sich von einer Innenfläche zu einer Außenfläche des Transportrings. Auch hier kann vorgesehen sein, dass die Bohrungen geradlinig in das Volumen übergehen, die Bohrungen also bevorzugt einen Abstand zur Unterseite des Transportrings aufweisen, der größer ist, als die Höhe der Stufe.According to a first aspect of the invention, ventilation channels are proposed which connect the volume formed between the underside of the substrate and the central area of the upper side of the substrate holder with an environment, so that when there is a pressure change within the housing of the CVD reactor, a gas flow between the volume and the environment can form, so that a pressure equalization can take place between the volume and the environment. The ventilation channels can be arranged in a uniform circumferential distribution around a center of the substrate holder. They can extend in the radial direction and have an angular distance from one another which is preferably 180 degrees, 120 degrees, 90 degrees, 60 degrees, 45 degrees or 30 degrees. A plurality of ventilation channels are preferably provided, which have the same angular distance from one another in the azimuthal direction in relation to a figure axis of the substrate holder or the transport ring. Of the The substrate holder and / or the transport ring can consist of a ceramic material or graphite. They can have a surface coating. The transport ring and / or the substrate holder are preferably made of a material which can be machined by a machining process. The substrate holder can have a circular outline. It forms a step extending around the central area of the upper side, which is followed by a step surface on which the preferably circular transport ring rests in such a way that a radially outer area of the lower side protrudes freely over a circumferential surface of the substrate holder so that a gripping arm engages under it to be able to. According to a second aspect of the invention, the technical features of which can be combined with the technical features of the first aspect of the invention, it is proposed that the ventilation channels are formed by grooves. These grooves are preferably elongated depressions, for example grooves, which have two walls facing one another and a bottom. The grooves are open on their side facing away from the floor, so that they can be produced by a cutting process, for example milling. The grooves preferably extend in one of the two surfaces which are in contact with one another when the transport ring rests on the substrate holder. The grooves can thus extend in the step surface on which the transport ring rests with its underside and in particular with its radially inner area of the underside. The grooves can also extend in the underside of the transport ring. They are then closed by the other surface, i.e. the underside of the transport ring or the step surface. The front ends of the grooves are open. It can be provided that the grooves made in the step surface extend up to the step, which forms an adjoining groove which extends from the step surface to the central area. A height of the groove can be less than a height of the step. The height of the groove, i.e. the distance from the bottom of the groove to the opening of the groove, is preferably greater than the height of the step between the step surface and the central area of the top, so that the ventilation channel formed by the groove straight into the volume between the underside of the substrate and Central area of the top of the substrate holder opens. According to a third aspect of the invention, the ventilation channels are formed by bores. The bores extend from an inner surface to an outer surface of the transport ring. Here, too, it can be provided that the bores merge in a straight line into the volume, that is to say that the bores preferably have a distance from the underside of the transport ring that is greater than the height of the step.
FigurenlisteFigure list
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert. Es zeigen:
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1 schematisch die Draufsicht auf einenSuszeptor 22 eines CVD-Reaktors, -
2 schematisch einen Halbschnitt durch dasGehäuse 30 eines CVD-Reaktors, -
3 ein erstes Ausführungsbeispiel der Erfindung in einer Darstellung gemäß dem in der2 mit III bezeichneten Ausschnitt, -
4 den Schnitt gemäß der Linie IV-IV in3 , -
5 ein zweites Ausführungsbeispiel der Erfindung in einer Darstellung gemäß3 , -
6 den Schnitt gemäß der Linie VI-VI in5 , -
7 ein drittes Ausführungsbeispiel der Erfindung in einer Darstellung gemäß3 , -
8 den Schnitt gemäß der Linie VIII-VIII in7 , -
9 ein viertes Ausführungsbeispiel der Erfindung in einer Darstellung gemäß3 und -
10 den Schnitt gemäß der Linie X-X in9 .
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1 schematically the top view of a susceptor22nd a CVD reactor, -
2 schematically a half section through the housing30th a CVD reactor, -
3 a first embodiment of the invention in a representation according to that in FIG2 section marked III, -
4th the section along the line IV-IV in3 , -
5 a second embodiment of the invention in a representation according to3 , -
6th the section along the line VI-VI in5 , -
7th a third embodiment of the invention in a representation according to3 , -
8th the section along the line VIII-VIII in7th , -
9 a fourth embodiment of the invention in a representation according to3 and -
10 the section along the line XX in9 .
Beschreibung der AusführungsformenDescription of the embodiments
Die
Der CVD-Reaktor wird zum Abscheiden von Schichten auf Substraten
Die
Die untereinander gleichgestalteten Vorrichtungen zur Lagerung der Substrate
Der Substrathalter
Auf der Stufenfläche
Das Substrat
Bei dem in den
Das in den
Das in den
Bei den zuvor beschriebenen Ausführungsbeispielen sind die Entlüftungskanäle
Bei dem in den
Die zuvor beschriebenen Nuten
Die vorstehenden Ausführungen dienen der Erläuterung der von der Anmeldung insgesamt erfassten Erfindungen, die den Stand der Technik zumindest durch die folgenden Merkmalskombinationen jeweils auch eigenständig weiterbilden, wobei zwei, mehrere oder alle dieser Merkmalskombinationen auch kombiniert sein können, nämlich:The above explanations serve to explain the inventions covered by the application as a whole, which also develop the state of the art independently at least through the following combinations of features, whereby two, more or all of these combinations of features can also be combined, namely:
Eine Vorrichtung, die dadurch gekennzeichnet ist, dass sich zwischen dem Volumen
Eine Vorrichtung, die dadurch gekennzeichnet ist, dass die Entlüftungskanäle von in der Unterseite
Eine Vorrichtung, die dadurch gekennzeichnet ist, dass sich die Entlüftungskanäle
Eine Vorrichtung, die dadurch gekennzeichnet ist, dass die Entlüftungskanäle
Ein Substrathalter, der gekennzeichnet ist durch in der Stufenfläche
Ein Substrathalter, der dadurch gekennzeichnet ist, dass sich die Nuten
Ein Transportring, der gekennzeichnet ist durch als Nuten
Ein Transportring, dadurch gekennzeichnet ist, dass sich die Nuten
Eine Vorrichtung, ein Substrathalter oder ein Transportring, die dadurch gekennzeichnet sind, dass die Entlüftungskanäle
Alle offenbarten Merkmale sind (für sich, aber auch in Kombination untereinander) erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen, auch zu dem Zweck, Merkmale dieser Unterlagen in Ansprüche vorliegender Anmeldung mit aufzunehmen. Die Unteransprüche charakterisieren, auch ohne die Merkmale eines in Bezug genommenen Anspruchs, mit ihren Merkmalen eigenständige erfinderische Weiterbildungen des Standes der Technik, insbesondere um auf Basis dieser Ansprüche Teilanmeldungen vorzunehmen. Die in jedem Anspruch angegebene Erfindung kann zusätzlich ein oder mehrere der in der vorstehenden Beschreibung, insbesondere mit Bezugsziffern versehene und/oder in der Bezugsziffernliste angegebene Merkmale aufweisen. Die Erfindung betrifft auch Gestaltungsformen, bei denen einzelne der in der vorstehenden Beschreibung genannten Merkmale nicht verwirklicht sind, insbesondere soweit sie erkennbar für den jeweiligen Verwendungszweck entbehrlich sind oder durch andere technisch gleichwirkende Mittel ersetzt werden können.All the features disclosed are essential to the invention (individually, but also in combination with one another). The disclosure of the application hereby also includes the full content of the disclosure content of the associated / attached priority documents (copy of the previous application), also for the purpose of including features of these documents in the claims of the present application. The subclaims characterize, even without the features of a referenced claim, with their features independent inventive developments of the prior art, in particular in order to make divisional applications on the basis of these claims. The invention specified in each claim can additionally have one or more of the features provided in the above description, in particular provided with reference numbers and / or specified in the list of reference numbers. The invention also relates to design forms in which some of the features mentioned in the description above are not implemented, in particular if they are recognizable for the respective purpose or can be replaced by other technically equivalent means.
BezugszeichenlisteList of reference symbols
- 11
- SubstrathalterSubstrate holder
- 22
- Unterseitebottom
- 33
- StufenflächeStep surface
- 44th
- Oberseite, ZentralbereichUpper side, central area
- 55
- Stufestep
- 66th
- UmfangsflächeCircumferential surface
- 77th
- TransportringTransport ring
- 88th
- Unterseitebottom
- 8'8th'
- radial innerer Bereich der Unterseiteradially inner area of the underside
- 8"8th"
- radial äußerer Bereich der Unterseiteradially outer area of the underside
- 99
- TragflächeWing
- 1010
- FlankeFlank
- 1111
- OberseiteTop
- 1212th
- AußenflächeExterior surface
- 1313th
- InnenflächeInner surface
- 1414th
- SubstratSubstrate
- 1515th
- RandbereichEdge area
- 1616
- Unterseitebottom
- 1717th
- Volumenvolume
- 1818th
- Bodenfloor
- 1919th
- Nut, EntlüftungskanalGroove, ventilation duct
- 2020th
- Nut, EntlüftungskanalGroove, ventilation duct
- 2121
- Bohrung, EntlüftungskanalBore, vent channel
- 2222nd
- SuszeptorSusceptor
- 2323
- LagertascheStorage bag
- 2424
- ProzesskammerProcess chamber
- 2525th
- ProzesskammerdeckeProcess chamber ceiling
- 2626th
- GaseinlassorganGas inlet element
- 2727
- GasauslassorganGas outlet member
- 2828
- HeizeinrichtungHeating device
- 2929
- Freiraumfree space
- 3030th
- Gehäusecasing
- 3131
- äußere Abdeckplatteouter cover plate
- 3232
- innere Abdeckplatteinner cover plate
- 3333
- Kanal channel
- HH
- Höheheight
- SS.
- Höheheight
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 102018114208 A1 [0004]DE 102018114208 A1 [0004]
- DE 102017129699 A1 [0004]DE 102017129699 A1 [0004]
- DE 102017101648 A1 [0004]DE 102017101648 A1 [0004]
- US 2018/0122685 A1 [0005]US 2018/0122685 A1 [0005]
- US 2004/0144323 A1 [0005]US 2004/0144323 A1 [0005]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020105538.2A DE102020105538A1 (en) | 2020-03-02 | 2020-03-02 | Device for holding a substrate in a CVD reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020105538.2A DE102020105538A1 (en) | 2020-03-02 | 2020-03-02 | Device for holding a substrate in a CVD reactor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102020105538A1 true DE102020105538A1 (en) | 2021-09-02 |
Family
ID=77271213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102020105538.2A Pending DE102020105538A1 (en) | 2020-03-02 | 2020-03-02 | Device for holding a substrate in a CVD reactor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102020105538A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040144323A1 (en) | 2002-07-29 | 2004-07-29 | Komatsu Denshi Kinzoku Kabushiki Kaisha | Epitaxial wafer production apparatus and susceptor structure |
US20180122685A1 (en) | 2016-10-28 | 2018-05-03 | Lam Research Corporation | Planar substrate edge contact with open volume equalization pathways and side containment |
DE102017101648A1 (en) | 2017-01-27 | 2018-08-02 | Aixtron Se | transport ring |
DE102017129699A1 (en) | 2017-12-13 | 2019-06-13 | Aixtron Se | Device for holding and transporting a substrate |
DE102018114208A1 (en) | 2018-06-14 | 2019-12-19 | Aixtron Se | Cover plate for covering the side of a susceptor of a device for depositing SiC layers facing the process chamber |
-
2020
- 2020-03-02 DE DE102020105538.2A patent/DE102020105538A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040144323A1 (en) | 2002-07-29 | 2004-07-29 | Komatsu Denshi Kinzoku Kabushiki Kaisha | Epitaxial wafer production apparatus and susceptor structure |
US20180122685A1 (en) | 2016-10-28 | 2018-05-03 | Lam Research Corporation | Planar substrate edge contact with open volume equalization pathways and side containment |
DE102017101648A1 (en) | 2017-01-27 | 2018-08-02 | Aixtron Se | transport ring |
DE102017129699A1 (en) | 2017-12-13 | 2019-06-13 | Aixtron Se | Device for holding and transporting a substrate |
DE102018114208A1 (en) | 2018-06-14 | 2019-12-19 | Aixtron Se | Cover plate for covering the side of a susceptor of a device for depositing SiC layers facing the process chamber |
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