JP3609077B1 - High pressure heat treatment equipment - Google Patents

High pressure heat treatment equipment Download PDF

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JP3609077B1
JP3609077B1 JP2003272539A JP2003272539A JP3609077B1 JP 3609077 B1 JP3609077 B1 JP 3609077B1 JP 2003272539 A JP2003272539 A JP 2003272539A JP 2003272539 A JP2003272539 A JP 2003272539A JP 3609077 B1 JP3609077 B1 JP 3609077B1
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pressure
chamber
heat treatment
load lock
processed
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JP2005033086A (en
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中尾　　賢
伸明 高橋
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Tokyo Electron Ltd
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Priority to PCT/JP2004/009844 priority patent/WO2005006426A1/en
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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
    • H01L21/677—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 conveying, e.g. between different workstations
    • H01L21/67739—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 conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/67748—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 conveying, e.g. between different workstations into and out of processing chamber horizontal transfer of a single workpiece
    • 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
    • C23C16/455—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 introducing gases into reaction chamber or for modifying gas flows in reaction chamber
    • C23C16/45557—Pulsed pressure or control pressure
    • 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
    • C23C16/54—Apparatus specially adapted for continuous coating
    • 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
    • H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
    • H01L21/67201—Apparatus for manufacturing or treating in a plurality of work-stations characterized by the construction of the load-lock chamber

Abstract

【課題】 常時高圧に維持された高圧熱処理室で被処理体の熱処理中にロードロック室で昇降圧操作及び被処理体の出し入れ操作を行うことができると共に、大口径の被処理体を高圧化で迅速に熱処理することができ、スループットの向上が図れる高圧熱処理装置を提供する。
【解決手段】 一枚の被処理体ｗを収容して高圧雰囲気下で所定の熱処理を施す高圧処理室１０と、該高圧処理室１０に遮蔽扉２０を介して連結され、高圧処理室１０内の圧力と略同一の圧力に維持された搬送室３０と、該搬送室３０に一端が第１のゲートバルブ４０を介して連結されると共に他端が第２のゲートバルブ５０を介して大気側に開口され、被処理体ｗを出し入れするための昇降圧可能なロードロック室６０とを備え、前記搬送室３０内にはロードロック室６０と高圧処理室１０との間で被処理体ｗを搬送する搬送機構３５が設けられている。
【選択図】 図２
PROBLEM TO BE SOLVED: To perform a step-up / step-down operation and a loading / unloading operation in a load lock chamber during heat treatment of an object to be processed in a high-pressure heat treatment chamber constantly maintained at a high pressure, and to increase the pressure of a large-diameter object to be processed. A high-pressure heat treatment apparatus that can perform heat treatment quickly and can improve throughput is provided.
SOLUTION: A high-pressure processing chamber 10 in which a single object to be processed w is accommodated and subjected to a predetermined heat treatment in a high-pressure atmosphere is connected to the high-pressure processing chamber 10 through a shielding door 20, and the high-pressure processing chamber 10 A transfer chamber 30 maintained at a pressure substantially equal to the pressure of the first chamber, and one end of the transfer chamber 30 connected to the transfer chamber 30 via a first gate valve 40 and the other end connected to the atmosphere side via a second gate valve 50. And a load lock chamber 60 capable of raising and lowering pressure for taking in and out the object to be processed w, and the object to be processed w is placed in the transfer chamber 30 between the load lock chamber 60 and the high pressure processing chamber 10. A transport mechanism 35 for transport is provided.
[Selection] Figure 2

Description

本発明は、被処理体を一枚ずつ高圧雰囲気下で熱処理するための高圧熱処理装置に関する。   The present invention relates to a high-pressure heat treatment apparatus for heat-treating objects to be processed one by one in a high-pressure atmosphere.

従来のこの種の装置としては、例えば特開平３−６９１２０号公報に記載されているバッチ式の高圧酸化炉（前者）や特開平５−７４７５７号公報に記載されている枚葉式の高圧酸化炉（後者）が知られている。前者の高圧酸化炉は、一端側より酸素及び水素ガスを供給される炉心管を抱合し、この炉心管の外周囲を囲みウエハを加熱するヒータを内蔵すると共に窒素ガスで高圧状態にされた高圧容器と、この高圧容器の他端に第１の遮蔽扉を介して取付けられていると共に前記高圧容器の圧力に維持するようにガス導入口を持つ予備室と、この予備室内に位置されると共に複数枚のウエハを搭載したボートを炉心管内に取入れたり、取出したりするボートローダと、前記予備室の他端に第２の遮蔽扉を介して接続されると共にウエハを大気より取入れ取出す室（ウエハ装填室、昇圧室及び減圧室）とを備えて構成されている。   As this type of conventional apparatus, for example, a batch type high pressure oxidation furnace (the former) described in JP-A-3-69120 and a single wafer type high-pressure oxidation described in JP-A-5-74757 are disclosed. A furnace (the latter) is known. The former high-pressure oxidation furnace includes a furnace tube that is supplied with oxygen and hydrogen gas from one end, encloses the outer periphery of the furnace tube, incorporates a heater that heats the wafer, and is pressurized to high pressure with nitrogen gas. A container, a spare chamber attached to the other end of the high-pressure vessel via a first shielding door and having a gas inlet so as to maintain the pressure of the high-pressure vessel; A boat loader for taking a boat loaded with a plurality of wafers into and out of the furnace core tube, a chamber connected to the other end of the spare chamber via a second shielding door and taking in and taking out the wafer from the atmosphere (wafer Loading chamber, pressurization chamber and decompression chamber).

一方、後者の高圧酸化炉は、加圧タンク内に設けられた炉心管と、この炉心管内に設けられウエハを水平に保持するウエハホルダと、前記炉心管の周囲に設けられた赤外線ランプとを備えて構成されている。炉心管と加圧タンクはそれぞれの一端が大気側に開口され、それぞれが炉心管キャップと加圧タンクキャップで閉塞されるようになっている。前記いずれの高圧酸化炉も、高圧雰囲気中でウエハに熱酸化処理を施してウエハ面に酸化膜を形成するすため、通常の熱酸化装置に比べて酸化温度を低く、しかも、短時間で酸化膜を形成することが可能である。   On the other hand, the latter high-pressure oxidation furnace includes a core tube provided in a pressurized tank, a wafer holder provided in the core tube to hold a wafer horizontally, and an infrared lamp provided around the core tube. Configured. One end of each of the core tube and the pressurized tank is opened to the atmosphere side, and each is closed by the core tube cap and the pressurized tank cap. In any of the high-pressure oxidation furnaces, the wafer is thermally oxidized in a high-pressure atmosphere to form an oxide film on the wafer surface. Therefore, the oxidation temperature is lower than that of a normal thermal oxidation apparatus, and oxidation is performed in a short time. It is possible to form a film.

特開平３−６９１２０号公報JP-A-3-69120

特開平５−７４７５７号公報JP-A-5-74757

しかしながら、前者の高圧酸化炉においては、複数枚のウエハをボートに搭載して熱処理する構造上、大口径例えば直径３００ｍｍのウエハを熱処理することは難しい。特に、予備室にウエハ装填室、昇圧室及び減圧室を接続する構造であるため、構造の煩雑化及び装置の大型化を招く問題がある。   However, in the former high-pressure oxidation furnace, it is difficult to heat-treat a wafer having a large diameter, for example, 300 mm, due to a structure in which a plurality of wafers are mounted on a boat and heat-treated. In particular, since the wafer loading chamber, the pressure increasing chamber, and the pressure reducing chamber are connected to the spare chamber, there is a problem that the structure is complicated and the apparatus is enlarged.

後者の高圧酸化炉においては、枚葉式であるため、大口径のウエハの熱処理に適するが、ロードロック室を備えていないため、ウエハの搬入搬出の度に炉心管及び加圧タンク内の昇降圧操作及び炉心管キャップと加圧タンクキャップの開け閉めを行わなければならず、これらの操作に多くの時間がかかり、スループットが低い。また、昇温時間を短縮するために赤外線ランプが用いられているが、加圧タンク内に赤外線ランプが設けられているため、赤外線ランプが高圧力下で破損する恐れがある。   Since the latter high-pressure oxidation furnace is a single wafer type, it is suitable for heat treatment of large-diameter wafers, but since it does not have a load lock chamber, it raises and lowers the furnace core tube and the pressurized tank each time a wafer is loaded / unloaded. The pressure operation and the opening and closing of the core tube cap and the pressurized tank cap must be performed, and these operations take a lot of time and the throughput is low. In addition, an infrared lamp is used to shorten the heating time. However, since the infrared lamp is provided in the pressurized tank, the infrared lamp may be damaged under high pressure.

本発明は、上記事情を考慮してなされたものであり、常時高圧に維持された高圧処理室で被処理体の熱処理中にロードロック室で昇降圧操作及び被処理体の出し入れ操作を行うことができると共に、大口径の被処理体を高圧下で迅速に熱処理することができ、スループットの向上が図れる高圧熱処理装置を提供することを目的とする。   The present invention has been made in consideration of the above circumstances, and performs a step-up / step-down operation and an operation for removing and inserting the object to be processed in the load lock chamber during the heat treatment of the object to be processed in the high-pressure processing chamber constantly maintained at a high pressure. An object of the present invention is to provide a high-pressure heat treatment apparatus that can quickly heat-treat a large-diameter workpiece under high pressure and can improve throughput.

本発明のうち、請求項１の発明は、一枚の被処理体を収容して高圧雰囲気下で所定の熱処理を施す高圧処理室と、該高圧処理室に遮蔽扉を介して連結され、高圧処理室内の圧力と略同一の圧力に維持された搬送室と、該搬送室に一端が第１のゲートバルブを介して連結されると共に他端が第２のゲートバルブを介して大気側に開口され、被処理体を出し入れするための昇降圧可能なロードロック室とを備え、前記搬送室内にはロードロック室と高圧処理室との間で被処理体を搬送する搬送機構が設けられていることを特徴とする。   Among the present inventions, the invention of claim 1 is connected to a high-pressure processing chamber that contains a single object to be processed and performs a predetermined heat treatment in a high-pressure atmosphere, and is connected to the high-pressure processing chamber via a shielding door. A transfer chamber maintained at substantially the same pressure as the pressure in the processing chamber, one end connected to the transfer chamber via a first gate valve, and the other end opened to the atmosphere side via a second gate valve And a load lock chamber capable of raising and lowering pressure for taking in and out the object to be processed, and a transfer mechanism for transferring the object to be processed between the load lock chamber and the high pressure processing chamber is provided in the transfer chamber. It is characterized by that.

請求項２の発明は、請求項１に記載の高圧熱処理装置において、前記遮蔽扉が高圧処理室内から搬送室内への熱放射を遮蔽する遮熱扉であることを特徴とする。   According to a second aspect of the present invention, in the high pressure heat treatment apparatus according to the first aspect, the shielding door is a heat shielding door that shields heat radiation from the high pressure processing chamber to the transfer chamber.

請求項３の発明は、請求項１または２に記載の高圧熱処理装置において、前記第１のゲートバルブがロードロック室側に配置した弁座に弁体を着座させて閉弁する構造であることを特徴とする。   The invention according to claim 3 is the high-pressure heat treatment apparatus according to claim 1 or 2, wherein the first gate valve has a structure in which a valve element is seated on a valve seat disposed on the load lock chamber side to close the valve. It is characterized by.

請求項４の発明は、請求項１〜３のいずれかに記載の高圧熱処理装置において、前記第２のゲートバルブが大気側に配置した弁座に弁体を着座させて閉弁する構造であることを特徴とする。   According to a fourth aspect of the present invention, in the high-pressure heat treatment apparatus according to any one of the first to third aspects, the second gate valve has a structure in which a valve body is seated on a valve seat disposed on the atmosphere side to close the valve. It is characterized by that.

請求項５の発明は、請求項１〜４のいずれかに記載の高圧熱処理装置において、前記ロードロック室が前記搬送室に２つ連結され、その１つが熱処理後の被処理体を冷却する冷却機構を備えた冷却室とされていることを特徴とする。   A fifth aspect of the present invention is the high pressure heat treatment apparatus according to any one of the first to fourth aspects, wherein two of the load lock chambers are connected to the transfer chamber, one of which cools the workpiece after the heat treatment. The cooling chamber is provided with a mechanism.

本発明の高圧熱処理装置によれば、一枚の被処理体を収容して高圧雰囲気下で所定の熱処理を施す高圧処理室と、該高圧処理室に遮蔽扉を介して連結され、高圧処理室内の圧力と略同一の圧力に維持された搬送室と、該搬送室に一端が第１のゲートバルブを介して連結されると共に他端が第２のゲートバルブを介して大気側に開口され、被処理体を出し入れするための昇降圧可能なロードロック室とを備え、前記搬送室内にはロードロック室と高圧処理室との間で被処理体を搬送する搬送機構が設けられているため、常時高圧に維持された高圧処理室で被処理体の熱処理中にロードロック室で昇降圧操作及び被処理体の出し入れ操作を行うことができると共に、大口径の被処理体を高圧下で迅速に熱処理することができ、スループットの向上が図れる。   According to the high-pressure heat treatment apparatus of the present invention, a high-pressure treatment chamber that accommodates a single object to be treated and performs a predetermined heat treatment in a high-pressure atmosphere is connected to the high-pressure treatment chamber via a shielding door, A transfer chamber that is maintained at substantially the same pressure as the pressure, and one end connected to the transfer chamber via a first gate valve and the other end opened to the atmosphere side via a second gate valve, A load lock chamber capable of raising and lowering pressure for taking in and out the object to be processed, and a transfer mechanism for transferring the object to be processed between the load lock chamber and the high pressure processing chamber is provided in the transfer chamber, In the high-pressure processing chamber maintained at a high pressure at all times, during the heat treatment of the object to be processed, the load lock chamber can be used for the step-up / step-down operation and the processing of the object to be taken in and out, and the large-diameter object to be processed can be quickly moved under high pressure. Can be heat treated, improving throughput Achieved.

高圧処理室と搬送室とは略同じ圧力に維持されているため、高圧処理室と搬送室を仕切る遮蔽扉としては、気密性の高いゲートバルブである必要はなく、熱遮蔽扉で足りる。熱遮蔽扉とすることにより、構造の簡素化及び装置コストの低減が図れると共に高圧処理室内から搬送室内への放射熱による熱影響を防止することができる。   Since the high-pressure processing chamber and the transfer chamber are maintained at substantially the same pressure, it is not necessary to use a highly airtight gate valve as a shielding door that partitions the high-pressure processing chamber and the transfer chamber, and a heat-shielding door is sufficient. By using the heat shielding door, the structure can be simplified and the cost of the apparatus can be reduced, and the influence of heat from the radiant heat from the high-pressure processing chamber to the transfer chamber can be prevented.

第１のゲートバルブが、ロードロック室側に配置した弁座に弁体を着座させて閉弁する構造とされていることにより、搬送室側とロードロック室側の圧力差を利用して閉弁時の気密状態を容易に維持することができる。   Since the first gate valve is structured such that a valve element is seated on a valve seat disposed on the load lock chamber side, the valve is closed using a pressure difference between the transfer chamber side and the load lock chamber side. The airtight state at the time of valve can be maintained easily.

第２のゲートバルブが、大気側に配置した弁座に弁体を着座させて閉弁する構造とされていることにより、ロードロック室側と大気側の圧力差を利用して閉弁時の気密状態を容易に維持することができる。   The second gate valve has a structure in which a valve element is seated on a valve seat disposed on the atmosphere side to close the valve, so that a pressure difference between the load lock chamber side and the atmosphere side can be used to close the valve. An airtight state can be easily maintained.

ロードロック室が前記搬送室に２つ連結され、その１つが熱処理後の被処理体を冷却する冷却機構を備えた冷却室とされていることにより、未処理の被処理体の搬送操作と処理済の被処理体の搬送操作とを並列的または同時的に行って、スループットの向上が図れると共に、特別な占有スペースを必要とする専用のクーリングチャンバを必要とすることなく処理済みの高温の被処理体を搬送過程で冷却することができ、構造の簡素化及び装置コストの低減が図れる。   Two load lock chambers are connected to the transfer chamber, and one of the load lock chambers is a cooling chamber having a cooling mechanism for cooling the processed object after the heat treatment, so that the unprocessed object can be transferred and processed. In addition to improving the throughput by carrying out the transfer operation of the processed object in parallel or simultaneously, it is possible to improve the throughput and to treat the processed object at a high temperature without using a dedicated cooling chamber that requires a special space. The processing body can be cooled in the conveyance process, and the structure can be simplified and the apparatus cost can be reduced.

以下に、本発明を実施するための最良の形態について、添付図面を基に詳述する。図１は本発明の実施の形態である高圧熱処理装置を概略的に示す平面図、図２は図１の要部拡大縦断面図である。   The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a plan view schematically showing a high-pressure heat treatment apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged vertical sectional view of a main part of FIG.

これらの図において、１は被処理体例えば半導体ウエハｗに高圧雰囲気下で所定の熱処理を施す高圧熱処理装置である。この高圧熱処理装置１は、一枚のウエハｗを水平に収容して高圧雰囲気下で所定の熱処理例えば熱酸化処理を施す高圧処理室１０と、この高圧処理室１０に遮蔽扉２０を介して連結され、高圧処理室１０内の圧力と略同一の圧力または同一圧力に維持された搬送室３０と、この搬送室３０に一端が第１のゲートバルブ４０を介して連結されると共に他端が第２のゲートバルブ５０を介して大気側に開口され、ウエハｗを出し入れするための昇降圧可能なロードロック室６０とを備えている。前記搬送室３０内にはロードロック室６０と高圧処理室１０との間でウエハを搬送する搬送機構３５が設けられている。   In these drawings, reference numeral 1 denotes a high-pressure heat treatment apparatus that performs a predetermined heat treatment on an object to be processed, for example, a semiconductor wafer w in a high-pressure atmosphere. This high-pressure heat treatment apparatus 1 is connected to a high-pressure treatment chamber 10 that horizontally accommodates a single wafer w and performs a predetermined heat treatment, for example, thermal oxidation treatment in a high-pressure atmosphere, and a high-pressure treatment chamber 10 via a shielding door 20. The transfer chamber 30 is maintained at substantially the same pressure or the same pressure as the pressure in the high-pressure processing chamber 10, and one end is connected to the transfer chamber 30 via the first gate valve 40 and the other end is the first pressure. And a load lock chamber 60 which is opened to the atmosphere side through the second gate valve 50 and capable of raising and lowering the pressure for loading and unloading the wafer w. A transfer mechanism 35 for transferring a wafer between the load lock chamber 60 and the high-pressure processing chamber 10 is provided in the transfer chamber 30.

前記高圧処理室１０は、大口径例えば直径３００ｍｍのウエハを収容可能な石英製の扁平箱型の反応管１１と、この反応管１１外の上部と下部に配置され、ウエハｗを上下両面から所定の温度例えば８００〜１１００℃程度に加熱するヒータ１２と、このヒータ１２を含む反応管１１を収容し、反応管１１が内外の圧力差で破損しないように内部空間を反応管１１内の圧力とほぼ同じまたは同一の高圧に維持する圧力容器１３とから主に構成されている。反応管１１内にはウエハｗを載置するための複数例えば３本の支持ピン１４が設けられている。   The high-pressure processing chamber 10 is arranged in a quartz flat-box type reaction tube 11 capable of accommodating a wafer having a large diameter, for example, 300 mm, and an upper portion and a lower portion outside the reaction tube 11. The heater 12 for heating to a temperature of, for example, about 800 to 1100 ° C., and the reaction tube 11 including the heater 12 are accommodated, and the internal space is set to a pressure in the reaction tube 11 so that the reaction tube 11 is not damaged by a pressure difference between the inside and the outside. It is mainly comprised from the pressure vessel 13 maintained at the substantially same or the same high pressure. A plurality of, for example, three support pins 14 for mounting the wafer w are provided in the reaction tube 11.

反応管１１の一端部にはウエハｗを出し入れする開口部１１ａが設けられ、反応管１１の他端部にはガスボンベから圧力調整手段（レギュレータ）を介して圧力調整された不活性ガス例えば窒素Ｎ２ガスを反応管内に供給して反応管内を所定の高圧例えば２〜１０Kg／cm２程度に維持すると共に処理ガス例えば酸素Ｏ２ガスや水蒸気Ｈ２Ｏを所定の流量で供給するガス供給管１５が接続されていると共に、処理ガスを排気するための排気管１６が接続されている。 One end of the reaction tube 11 is provided with an opening 11a through which the wafer w is taken in and out, and the other end of the reaction tube 11 is an inert gas, for example, nitrogen N, whose pressure is adjusted from a gas cylinder through a pressure adjusting means (regulator). 2 gas is supplied into the reaction tube to maintain the inside of the reaction tube at a predetermined high pressure, for example, about 2 to 10 kg / cm 2 , and a gas supply tube 15 for supplying a processing gas such as oxygen O 2 gas or water vapor H 2 O at a predetermined flow rate. And an exhaust pipe 16 for exhausting the processing gas.

前記ヒータ１２は、反応管１１を収容可能な金属製のケース１２ａを有し、このケース１２ａ内の上部と下部に抵抗発熱体からなる面状の加熱部１７ａ，１７ｂが設けられている。加熱部１７ａ，１７ｂと反応管１１の間には均熱材１８が配置されていることが好ましい。前記圧力容器１３は金属製であり、前記反応管１１の開口部１１ａと対応する開口部１３ａが設けられていると共に、内部を所定の高圧に維持するためにガスボンベからレギュレータを介して圧力調整された不活性ガス例えば窒素Ｎ２ガスを導入する図示しないガス導入管が接続されている。反応管１１と圧力容器１３とは、同一圧力にするために、開閉弁を有する連通管により連通可能とされていてもよい。 The heater 12 has a metal case 12a that can accommodate the reaction tube 11, and planar heating portions 17a and 17b made of a resistance heating element are provided in the upper and lower portions of the case 12a. It is preferable that a soaking material 18 is disposed between the heating units 17 a and 17 b and the reaction tube 11. The pressure vessel 13 is made of metal, has an opening 13a corresponding to the opening 11a of the reaction tube 11, and is pressure-adjusted from a gas cylinder through a regulator to maintain the inside at a predetermined high pressure. A gas introduction pipe (not shown) for introducing an inert gas such as nitrogen N 2 gas is connected. In order to make the reaction tube 11 and the pressure vessel 13 have the same pressure, the reaction tube 11 and the pressure vessel 13 may be communicated by a communication tube having an on-off valve.

搬送室３０の一端には前記高圧処理室１０が遮蔽扉２０を介して連結され、搬送室３０の他端には未処理のウエハの搬送操作と処理済のウエハの搬送操作とを並列的または同時的に行って、スループットの向上を図るために複数例えば２つのロードロック室６０，６０がそれぞれ第１のゲートバルブ４０，４０を介して連結されていることが好ましい。前記搬送室３０の一端には遮蔽扉２０を介して前記高圧処理室１０の圧力容器１３の開口部１３ａと連通する開口部３１が設けられ、搬送室３０の他端には２つのロードロック室６０，６０のそれぞれの一端の開口部６１と第１のゲートバルブ４０，４０を介して連通する２つの開口部３２，３２が設けられている。各ロードロック室６０の他端は第２のゲートバルブ５０を介して大気側と連通する開口部６２が設けられている。   The high-pressure processing chamber 10 is connected to one end of the transfer chamber 30 via a shielding door 20, and an unprocessed wafer transfer operation and a processed wafer transfer operation are performed in parallel or the other end of the transfer chamber 30. It is preferable that a plurality of, for example, two load lock chambers 60, 60 are connected via the first gate valves 40, 40, respectively, in order to improve the throughput simultaneously. One end of the transfer chamber 30 is provided with an opening 31 that communicates with the opening 13 a of the pressure vessel 13 of the high-pressure processing chamber 10 via a shielding door 20, and two load lock chambers are provided at the other end of the transfer chamber 30. Two openings 32, 32 communicating with the opening 61 at one end of each of the 60, 60 and the first gate valve 40, 40 are provided. The other end of each load lock chamber 60 is provided with an opening 62 communicating with the atmosphere side via the second gate valve 50.

搬送室３０にはガスボンベからレギュレータを介して圧力調整された不活性ガス例えば窒素Ｎ２ガスを搬送室内に供給して搬送室内を高圧処理室内と略同じ圧力に維持するガス供給管が接続されている（図示省略）。搬送室３０内に設けられた搬送機構３５は、ウエハｗを水平に保持する平面Ｕ字状の保持部３６を有し、水平旋回、水平方向への伸縮及び上下方向の移動が可能なアーム機構からなっている。 Connected to the transfer chamber 30 is a gas supply pipe for supplying an inert gas, for example, nitrogen N 2 gas, whose pressure is adjusted from a gas cylinder through a regulator, into the transfer chamber and maintaining the transfer chamber at substantially the same pressure as the high-pressure processing chamber. (Not shown). The transfer mechanism 35 provided in the transfer chamber 30 has a plane U-shaped holding portion 36 that holds the wafer w horizontally, and is capable of horizontal turning, horizontal expansion and contraction, and vertical movement. It is made up of.

高圧処理室１０と搬送室３０とは略同じ圧力に維持されているため、高圧処理室１０と搬送室３０を仕切る遮蔽扉２０としては、気密性の高いゲートバルブである必要はなく、高圧処理室１０内から搬送室３０内への高温の放射熱（輻射熱）を遮断する熱遮蔽扉が好ましい。ゲートバルブは弁体と弁座の間に気密材例えばＯリングを備えているのに対し、熱遮蔽扉はＯリングを備えていないので、構造の簡素化及び装置コストの低減が図れる。図示例の遮蔽扉（熱遮蔽扉）２０は、搬送室側の弁座２１に弁体（扉体）２２を着座させて閉鎖（閉弁）し、弁体２２を高圧処理室１０側に移動させ更に下方に退避させて開弁するようになっているが、高圧処理室１０側の弁座に弁体を着座させて閉鎖し、弁体２２を搬送室３０側に移動させ更に下方に退避させて開弁するようになっていてもよい。高圧処理室１０である反応管１１または圧力容器１３と搬送室３０とは、同一圧力にするために、開閉弁を有する連通管により連通可能とされていてもよい。   Since the high-pressure processing chamber 10 and the transfer chamber 30 are maintained at substantially the same pressure, the shielding door 20 that partitions the high-pressure processing chamber 10 and the transfer chamber 30 does not need to be a highly airtight gate valve. A heat shielding door that blocks high-temperature radiant heat (radiant heat) from the chamber 10 into the transfer chamber 30 is preferable. The gate valve is provided with an airtight material such as an O-ring between the valve body and the valve seat, whereas the heat shielding door is not provided with the O-ring, so that the structure can be simplified and the cost of the apparatus can be reduced. The shielding door (heat shielding door) 20 shown in the figure is closed (closed) by seating a valve body (door body) 22 on a valve seat 21 on the transfer chamber side, and the valve body 22 is moved to the high-pressure processing chamber 10 side. The valve body is further retracted downward to open the valve, but the valve body is seated and closed on the valve seat on the high pressure processing chamber 10 side, and the valve body 22 is moved to the transfer chamber 30 side and further retracted downward. The valve may be opened. The reaction tube 11 or the pressure vessel 13 that is the high-pressure processing chamber 10 and the transfer chamber 30 may be communicated by a communication tube having an on-off valve so as to have the same pressure.

一方、ロードロック室６０にはガスボンベからレギュレータを介して圧力調整された不活性ガス例えば窒素Ｎ２ガスをロードロック室内に供給してロードロック室内を搬送室内と略同じ圧力に昇圧するガス供給管と、ロードロック室内の不活性ガスを排気してロードロック室内の圧力を大気圧に降圧する排気管が接続されている（図示省略）。ロードロック室６０は、大気側に連通開放されるときには大気側と略同じ圧力（大気圧）に降圧され、搬送室側に連通開放されるときには搬送室側と略同じ圧力（高圧）に昇圧され、搬送室とロードロック室との間、ロードロック室と大気側との間には圧力差が生じるので、気密性を確保するためのＯリングを有する第１のゲートバルブ４０及び第２のゲートバルブ５０が用いられている。 On the other hand, in the load lock chamber 60, a gas supply pipe for supplying an inert gas such as nitrogen N 2 gas whose pressure has been adjusted from a gas cylinder through a regulator into the load lock chamber to increase the pressure inside the load lock chamber to substantially the same pressure as the transfer chamber. And an exhaust pipe for exhausting the inert gas in the load lock chamber and reducing the pressure in the load lock chamber to atmospheric pressure (not shown). The load lock chamber 60 is depressurized to substantially the same pressure (atmospheric pressure) as that of the atmosphere side when opened to the atmosphere side, and is raised to substantially the same pressure (high pressure) as that of the transfer chamber side when opened to the transfer chamber side. Since there is a pressure difference between the transfer chamber and the load lock chamber and between the load lock chamber and the atmosphere side, the first gate valve 40 and the second gate having an O-ring for ensuring airtightness A valve 50 is used.

この場合、前記圧力差を利用して閉弁時の気密状態を容易に維持するために、第１のゲートバルブ４０は、ロードロック室６０側に配置した弁座４１に弁体４２をＯリング４３を介して着座させて閉弁する構造とされており、第２のゲートバルブ５０は、大気側に配置した弁座５１に弁体５２をＯリング５３を介して着座させて閉弁する構造とされている。更に詳しく説明すると、第１のゲートバルブ４０は弁体４１を搬送室３０側に移動させ更に下方に退避させて開弁し、第２のゲートバルブ５０は弁体５１をロードロック室６０側に移動させ更に下方に退避させて開弁するようになっている。搬送室３０とロードロック室６０とは、同一圧力にするために、開閉弁を有する連通管により連通可能とされていてもよい。   In this case, in order to easily maintain the airtight state when the valve is closed by utilizing the pressure difference, the first gate valve 40 has the valve element 42 attached to the valve seat 41 arranged on the load lock chamber 60 side. The second gate valve 50 has a structure in which the valve body 52 is seated on the valve seat 51 disposed on the atmosphere side via the O-ring 53 and is closed. It is said that. More specifically, the first gate valve 40 opens the valve element 41 by moving the valve element 41 to the transfer chamber 30 side and further retracts downward, and the second gate valve 50 opens the valve element 51 to the load lock chamber 60 side. The valve is moved and further retracted downward to open the valve. The transfer chamber 30 and the load lock chamber 60 may be communicated with each other by a communication pipe having an on-off valve so as to have the same pressure.

ロードロック室６０内には、ウエハｗを水平に支持する複数例えば３本の支持ピン６３が設けられている。特別な占有スペースを必要とする専用のクーリングチャンバを必要とすることなく処理済みの高温のウエハを搬送過程で冷却し、構造の簡素化及び装置コストの低減を図るために、２つのロードロック室６０，６０のうちの１つは、熱処理後のウエハを冷却する水冷式または空冷式の冷却機構を備えた冷却室６５とされていることが好ましい。   In the load lock chamber 60, a plurality of, for example, three support pins 63 for horizontally supporting the wafer w are provided. Two load lock chambers to cool processed high-temperature wafers in the transfer process without the need for a dedicated cooling chamber that requires special space, simplifying the structure and reducing equipment costs One of 60 and 60 is preferably a cooling chamber 65 having a water-cooled or air-cooled cooling mechanism for cooling the wafer after the heat treatment.

前記高圧熱処理装置１の大気側には複数例えば２５枚程度のウエハを上下方向に所定間隔で収容した運搬容器であるカセット（キャリアともいう）７０を載置するカセット載置台７５が図示例では並列に２つ設置され、これらカセット設置台７５と前記ロードロック室６０との間にはカセット７０とロードロック室６０との間でウエハｗを一枚ずつ搬送する大気側搬送機構８０が設けられている。前記カセット７０は、搬送ロボットまたは作業員により前記カセット載置台７５上に搬送載置され、また、カセット載置台７５上から搬出されるようになっている。   On the atmosphere side of the high-pressure heat treatment apparatus 1, a cassette mounting table 75 for mounting a cassette (also referred to as a carrier) 70, which is a transport container storing a plurality of, for example, about 25 wafers in the vertical direction, is arranged in parallel in the illustrated example. Two atmosphere-side transfer mechanisms 80 for transferring wafers w one by one between the cassette 70 and the load lock chamber 60 are provided between the cassette setting table 75 and the load lock chamber 60. Yes. The cassette 70 is transported and mounted on the cassette mounting table 75 by a transport robot or a worker, and is unloaded from the cassette mounting table 75.

カセット７０としては、カセット本体におけるウエハ取出口に蓋を着脱可能に取付けた蓋付きカセットであっても良い。前記大気側搬送機構８０は、カセット載置台７５の並列方向に沿って水平移動可能で、且つ水平旋回、水平方向への伸縮及び上下方向の移動が可能な搬送アーム８１を備えている。   The cassette 70 may be a cassette with a lid in which a lid is detachably attached to a wafer outlet in the cassette body. The atmosphere-side transfer mechanism 80 includes a transfer arm 81 that can move horizontally along the parallel direction of the cassette mounting table 75 and that can horizontally rotate, extend and contract in the horizontal direction, and move up and down.

以上の構成からなる高圧熱処理装置１においては、初期状態として、高圧処理室１０、搬送室３０及び冷却室６５が所定の圧力に昇圧されており、冷却室６５でない方のロードロック室６０の圧力が大気圧に降圧されている。このロードロック室６０の第２のゲートバルブ５０を開き、大気側搬送機構８０によりカセット載置台７５上のカセット７０から未処理ウエハｗを取り出して、前記ロードロック室６０に搬入する。   In the high-pressure heat treatment apparatus 1 having the above configuration, as an initial state, the high-pressure processing chamber 10, the transfer chamber 30, and the cooling chamber 65 are pressurized to a predetermined pressure, and the pressure of the load lock chamber 60 that is not the cooling chamber 65 is increased. Has been reduced to atmospheric pressure. The second gate valve 50 of the load lock chamber 60 is opened, and the unprocessed wafer w is taken out from the cassette 70 on the cassette mounting table 75 by the atmosphere side transfer mechanism 80 and loaded into the load lock chamber 60.

次いで、このロードロック室６０の第２のゲートバルブ５０を閉じてロードロック室６０内を所定の圧力に昇圧させたなら、第１のゲートバルブ４０と遮蔽扉２０を開き、搬送室３０内の搬送機構３５によりロードロック室６０から高圧処理室１０の反応管１１内に未処理ウエハｗを搬送し、第１のゲートバルブ４０と遮蔽扉２０を閉じ、未処理ウエハｗに所定の熱処理例えば熱酸化処理を施す。所定の熱処理時間経過後に、遮蔽扉２０と冷却室６５の第１のゲートバルブ４０を開き、反応管１１から冷却室６５に高温の処理済ウエハｗを搬送し、遮蔽扉２０と冷却室６５の第１のゲートバルブ４０を閉じ、冷却室６５を大気圧に降圧して該冷却室６５で処理済ウエハｗの冷却を行う。   Next, when the second gate valve 50 of the load lock chamber 60 is closed to increase the pressure inside the load lock chamber 60 to a predetermined pressure, the first gate valve 40 and the shielding door 20 are opened, and the inside of the transfer chamber 30 is opened. The unprocessed wafer w is transferred from the load lock chamber 60 into the reaction tube 11 of the high-pressure processing chamber 10 by the transfer mechanism 35, the first gate valve 40 and the shielding door 20 are closed, and a predetermined heat treatment such as heat is applied to the unprocessed wafer w. Apply oxidation treatment. After the elapse of a predetermined heat treatment time, the first gate valve 40 of the shielding door 20 and the cooling chamber 65 is opened, the high-temperature processed wafer w is transferred from the reaction tube 11 to the cooling chamber 65, and the shielding door 20 and the cooling chamber 65 are moved. The first gate valve 40 is closed, the cooling chamber 65 is lowered to atmospheric pressure, and the processed wafer w is cooled in the cooling chamber 65.

この冷却中に、次の未処理ウエハｗを前述と同様にカセット７０から取り出し、ロードロック室６０、搬送室３０を経由して反応管１１内に搬入し、所定の熱処理を行う。一方、この熱処理中に、前記冷却室６５での冷却が終了すると、冷却室６５の第２のゲートバルブ５０を開き、大気側搬送機構８０により冷却室６５内から処理済ウエハｗを取り出してカセット載置台７５上のカセット７０内に挿し込む。このようにしてウエハを一枚ずつ順次連続的に高圧雰囲気下で熱酸化処理することができる。   During this cooling, the next unprocessed wafer w is taken out from the cassette 70 in the same manner as described above, and is carried into the reaction tube 11 via the load lock chamber 60 and the transfer chamber 30 and subjected to a predetermined heat treatment. On the other hand, when the cooling in the cooling chamber 65 is completed during the heat treatment, the second gate valve 50 of the cooling chamber 65 is opened, and the processed wafer w is taken out from the cooling chamber 65 by the atmosphere-side transfer mechanism 80 and the cassette. It is inserted into the cassette 70 on the mounting table 75. In this manner, the wafers can be subjected to thermal oxidation treatment sequentially and successively in a high-pressure atmosphere.

前記高圧熱処理装置１によれば、一枚のウエハｗを収容して高圧雰囲気下で所定の熱処理を施す高圧処理室１０と、該高圧処理室１０に遮蔽扉２０を介して連結され、高圧処理室１０内の圧力と略同一または同一の圧力に維持された搬送室３０と、該搬送室３０に一端が第１のゲートバルブ４０を介して連結されると共に他端が第２のゲートバルブ５０を介して大気側に開口され、ウエハｗを出し入れするための昇降圧可能なロードロック室６０とを備え、前記搬送室３０内にはロードロック室６０と高圧処理室１０との間でウエハｗを高圧雰囲気中で搬送する搬送機構３５が設けられているため、常時高圧に維持された高圧処理室１０でウエハｗの熱処理中にロードロック室６０で昇降圧操作及びウエハの出し入れ操作を行うことができると共に、大口径のウエハを高圧下で迅速に熱処理することができ、スループットの向上が図れる。   According to the high-pressure heat treatment apparatus 1, a high-pressure treatment chamber 10 that accommodates a single wafer w and performs a predetermined heat treatment in a high-pressure atmosphere is connected to the high-pressure treatment chamber 10 via the shielding door 20, and is subjected to high-pressure treatment. A transfer chamber 30 maintained at substantially the same pressure as the pressure in the chamber 10, one end connected to the transfer chamber 30 via a first gate valve 40, and the other end to a second gate valve 50. And a load lock chamber 60 capable of raising and lowering pressure for loading and unloading the wafer w, and the wafer w between the load lock chamber 60 and the high pressure processing chamber 10 is provided in the transfer chamber 30. Is provided in the high-pressure atmosphere, so that the step-up / step-down operation and the wafer loading / unloading operation are performed in the load lock chamber 60 during the heat treatment of the wafer w in the high-pressure processing chamber 10 maintained at a constant high pressure. Can Both can be heat treated quickly wafer having a large diameter under high pressure, the throughput can be improved.

高圧処理室１０と搬送室３０とは略同じ圧力または同一圧力に維持されているため、高圧処理室１０と搬送室３０を仕切る遮蔽扉２０としては、気密性の高いゲートバルブである必要はなく、熱遮蔽扉で足りる。熱遮蔽扉とすることにより、構造の簡素化及び装置コストの低減が図れると共に高圧処理室１０内から搬送室３０内への放射熱による熱影響を防止することができる。第１のゲートバルブ４０が、ロードロック室６０側に配置した弁座４１に弁体４２を着座させて閉弁する構造とされていることにより、搬送室３０側とロードロック室６０側の圧力差を利用して閉弁時の気密状態を容易に維持することができる。   Since the high-pressure processing chamber 10 and the transfer chamber 30 are maintained at substantially the same pressure or the same pressure, the shielding door 20 that partitions the high-pressure processing chamber 10 and the transfer chamber 30 does not have to be a highly airtight gate valve. A heat-shielded door is sufficient. By using the heat shielding door, the structure can be simplified and the cost of the apparatus can be reduced, and the thermal influence from the radiant heat from the inside of the high-pressure processing chamber 10 to the inside of the transfer chamber 30 can be prevented. Since the first gate valve 40 has a structure in which the valve element 42 is seated on the valve seat 41 disposed on the load lock chamber 60 side to close the valve, the pressure on the transfer chamber 30 side and the load lock chamber 60 side is determined. The airtight state at the time of valve closing can be easily maintained by utilizing the difference.

また、第２のゲートバルブ５０が、大気側に配置した弁座５１に弁体５２を着座させて閉弁する構造とされていることにより、ロードロック室６０側と大気側の圧力差を利用して閉弁時の気密状態を容易に維持することができる。更に、ロードロック室６０が前記搬送室３０に２つ連結され、その１つが熱処理後のウエハｗを冷却する冷却機構を備えた冷却室６５とされていることにより、未処理のウエハｗの搬送操作と処理済のウエハｗの搬送操作とを並列的または同時的に行って、スループットの向上が図れると共に、特別な占有スペースを必要とする専用のクーリングチャンバを必要とすることなく処理済みの高温のウエハｗを搬送過程で冷却することができ、構造の簡素化及び装置コストの低減が図れる。   Further, the second gate valve 50 has a structure in which the valve body 52 is seated on the valve seat 51 disposed on the atmosphere side and is closed, thereby utilizing the pressure difference between the load lock chamber 60 side and the atmosphere side. Thus, the airtight state when the valve is closed can be easily maintained. Further, two load lock chambers 60 are connected to the transfer chamber 30, and one of the load lock chambers 60 is a cooling chamber 65 having a cooling mechanism for cooling the heat-treated wafer w, thereby transferring the unprocessed wafer w. The operation and the transfer operation of the processed wafer w can be performed in parallel or simultaneously to improve the throughput, and the processed high temperature without requiring a dedicated cooling chamber that requires a special occupation space. The wafer w can be cooled in the transfer process, and the structure can be simplified and the apparatus cost can be reduced.

以上、本発明の実施の形態ないし実施例を図面により詳述してきたが、本発明は前記実施の形態ないし実施例に限定されるものではなく、本発明の要旨を逸脱しない範囲での種々の設計変更等が可能である。例えば、本発明は、高圧下での熱酸化処理以外に、高圧下での熱ＣＶＤ処理や熱拡散処理等にも適用可能である。また、被処理体としては、半導体ウエハ以外に、ＬＣＤ基板、ガラス基板等も適用可能である。   As mentioned above, although embodiment thru | or example of this invention has been explained in full detail with drawing, this invention is not limited to the said embodiment thru | or example, Various in the range which does not deviate from the summary of this invention. Design changes can be made. For example, the present invention can be applied to a thermal CVD process or a thermal diffusion process under a high pressure in addition to a thermal oxidation process under a high pressure. In addition to the semiconductor wafer, an LCD substrate, a glass substrate, or the like can be used as the object to be processed.

本発明の実施の形態である高圧熱処理装置を概略的に示す平面図である。It is a top view which shows roughly the high pressure heat processing apparatus which is embodiment of this invention. 図１の要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view of FIG.

符号の説明Explanation of symbols

１ 高圧熱処理装置
１０ 高圧処理室
２０ 遮蔽扉
３０ 搬送室
３５ 搬送機構
４０ 第１のゲートバルブ
５０ 第２のゲートバルブ
６０ ロードロック室
６５ 冷却室 DESCRIPTION OF SYMBOLS 1 High pressure heat processing apparatus 10 High pressure processing chamber 20 Shielding door 30 Transfer chamber 35 Transfer mechanism 40 First gate valve 50 Second gate valve 60 Load lock chamber 65 Cooling chamber

Claims (5)

一枚の被処理体を収容して高圧雰囲気下で所定の熱処理を施す高圧処理室と、該高圧処理室に遮蔽扉を介して連結され、高圧処理室内の圧力と略同一の圧力に維持された搬送室と、該搬送室に一端が第１のゲートバルブを介して連結されると共に他端が第２のゲートバルブを介して大気側に開口され、被処理体を出し入れするための昇降圧可能なロードロック室とを備え、前記搬送室内にはロードロック室と高圧処理室との間で被処理体を搬送する搬送機構が設けられていることを特徴とする高圧熱処理装置。   A high-pressure processing chamber containing a single object to be processed and subjected to a predetermined heat treatment in a high-pressure atmosphere is connected to the high-pressure processing chamber via a shielding door, and is maintained at substantially the same pressure as the pressure in the high-pressure processing chamber. A transfer chamber, one end connected to the transfer chamber via a first gate valve, and the other end opened to the atmosphere via a second gate valve, and a step-up / down pressure for taking in and out the object to be processed A high-pressure heat treatment apparatus comprising: a load lock chamber capable of transporting an object to be processed between the load lock chamber and the high-pressure processing chamber. 前記遮蔽扉は、高圧処理室内から搬送室内への熱放射を遮蔽する遮熱扉であることを特徴とする請求項１に記載の高圧熱処理装置。   The high-pressure heat treatment apparatus according to claim 1, wherein the shielding door is a heat-shielding door that shields heat radiation from the high-pressure processing chamber to the transfer chamber. 前記第１のゲートバルブは、ロードロック室側に配置した弁座に弁体を着座させて閉弁する構造であることを特徴とする請求項１または２に記載の高圧熱処理装置。   3. The high-pressure heat treatment apparatus according to claim 1, wherein the first gate valve has a structure in which a valve body is seated on a valve seat disposed on a load lock chamber side to close the valve. 前記第２のゲートバルブは、大気側に配置した弁座に弁体を着座させて閉弁する構造であることを特徴とする請求項１〜３のいずれかに記載の高圧熱処理装置。   The high-pressure heat treatment apparatus according to any one of claims 1 to 3, wherein the second gate valve has a structure in which a valve body is seated on a valve seat disposed on the atmosphere side to close the valve. 前記ロードロック室は、前記搬送室に２つ連結され、その１つが熱処理後の被処理体を冷却する冷却機構を備えた冷却室とされていることを特徴とする請求項１〜４のいずれかに記載の高圧熱処理装置。
The load lock chamber is connected to the transfer chamber in two, and one of the load lock chambers is a cooling chamber having a cooling mechanism for cooling the object to be processed after heat treatment. A high-pressure heat treatment apparatus according to claim 1.
JP2003272539A 2003-07-09 2003-07-09 High pressure heat treatment equipment Expired - Fee Related JP3609077B1 (en)

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