JP2008227443A - Vertical heat treatment apparatus and vertical heat treatment method - Google Patents

Vertical heat treatment apparatus and vertical heat treatment method Download PDF

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JP2008227443A
JP2008227443A JP2007195591A JP2007195591A JP2008227443A JP 2008227443 A JP2008227443 A JP 2008227443A JP 2007195591 A JP2007195591 A JP 2007195591A JP 2007195591 A JP2007195591 A JP 2007195591A JP 2008227443 A JP2008227443 A JP 2008227443A
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bottom plate
holder
heat treatment
substrate holder
substrate
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JP4365430B2 (en
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Hirohisa Nitori
弘弥 似鳥
Katsuyuki Hishitani
克幸 菱谷
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Tokyo Electron Ltd
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Tokyo Electron Ltd
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Priority to TW097102925A priority patent/TWI462145B/en
Priority to US12/068,560 priority patent/US7922485B2/en
Priority to KR1020080012972A priority patent/KR101118824B1/en
Priority to CN2008100741198A priority patent/CN101246815B/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
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67098—Apparatus for thermal treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F27B17/0025—Especially adapted for treating semiconductor wafers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/0037—Supports specially adapted for semi-conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
    • 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
    • H01L21/67303—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements
    • 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
    • H01L21/67763—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 the wafers being stored in a carrier, involving loading and unloading
    • H01L21/67778—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 the wafers being stored in a carrier, involving loading and unloading involving loading and unloading of wafers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical heat treatment apparatus and a vertical heat treatment method which can prevent, with a simple configuration, a boat on a boat transfer mechanism from turning over due to an external force such as an earthquake even in a two-boat system. <P>SOLUTION: A vertical heat treatment apparatus 1 including a heat treatment furnace 5, a lid 17 for closing a throat 5a of the heat treatment furnace 5, a substrate holder 4 which is disposed on the lid 17 via a heat insulating tube 19 and holds a number of substrates w in multiple stages, a lift mechanism 18 for lifting and lowering the lid 17 to carry the substrate holder 4 into and out of the heat treatment furnace 5, a holder table on which when the substrate holder 4 is placed in the heat treatment furnace 5, another substrate holder 4 is placed for transferring the substrate w, and a holder transfer mechanism 23 for transferring the substrate holder 4 between the holder table and the heat insulating mould 19, wherein the holder transfer mechanism 23 includes a turnover regulator for regulating a turnover of the substrate holder 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、縦型熱処理装置及び縦型熱処理方法に関する。   The present invention relates to a vertical heat treatment apparatus and a vertical heat treatment method.

半導体装置の製造においては、半導体ウエハ（基板）に例えば酸化処理、成膜処理等の各種の処理を施す工程があり、このような処理を行う装置として例えば多数枚のウエハをバッチ式に処理可能な縦型熱処理装置（半導体製造装置）が用いられている（例えば、特許文献１参照）。この縦型熱処理装置は、下部に炉口を有する縦型の熱処理炉の下方にローディングエリア（移載領域）を有し、このローディングエリアには、上記炉口を開閉する蓋体の上部に大口径例えば直径３００ｍｍの多数枚（１００〜１５０枚程度）のウエハを搭載保持するボート（基板保持具）を保温筒を介して載置し、蓋体を昇降させてボートを熱処理炉内に搬入・搬出する昇降機構や、複数枚のウエハを収納したキャリア（収納容器）と上記ボートとの間でウエハの移載を行う移載機構等が設けられている。   In the manufacture of semiconductor devices, there are processes for performing various types of processing such as oxidation processing and film formation processing on semiconductor wafers (substrates). For example, a large number of wafers can be processed batchwise as an apparatus for performing such processing. A vertical heat treatment apparatus (semiconductor manufacturing apparatus) is used (for example, see Patent Document 1). This vertical heat treatment apparatus has a loading area (transfer area) below a vertical heat treatment furnace having a furnace port in the lower part, and this loading area has a large area above the lid that opens and closes the furnace port. A boat (substrate holder) on which a large number of wafers having a diameter of, for example, 300 mm (about 100 to 150) are mounted and mounted is placed via a heat insulating cylinder, and the lid is moved up and down to carry the boat into a heat treatment furnace. A lifting mechanism for unloading, a transfer mechanism for transferring wafers between a carrier (storage container) storing a plurality of wafers and the boat are provided.

上記ボートは、石英製で、非常に高価なものである。また、上記ウエハも、高価であり、処理工程が進むに連れ、製造コストが増大する。従って、これらの取扱いは慎重に行われる。   The boat is made of quartz and is very expensive. The wafer is also expensive, and the manufacturing cost increases as the processing steps progress. Therefore, these are handled carefully.

しかしながら、前述したバッチ式の半導体製造装置においては、装置の構成上、ハード及びソフトの面で様々な制約があり、耐震構造ないし耐震機能を持たせることが難しく、充分な耐震対策がなされていないのが現状である。このため、地震が発生して、装置が大きな揺れを受けると、ボートが転倒し、ボートやウエハの破損等、大きな損害を招く恐れがある。   However, in the batch type semiconductor manufacturing apparatus described above, there are various restrictions in terms of hardware and software due to the configuration of the apparatus, it is difficult to provide an earthquake resistant structure or an earthquake resistant function, and sufficient earthquake resistance measures are not taken. is the current situation. For this reason, when an earthquake occurs and the apparatus is greatly shaken, the boat may fall down and cause serious damage such as breakage of the boat or wafer.

この問題を解消するために、特許文献１記載の縦型熱処理装置においては、基板保持具の底板と保温筒とを基板保持具固定部材により互いに連結固定する構造が採用されている。   In order to solve this problem, the vertical heat treatment apparatus described in Patent Document 1 employs a structure in which the bottom plate of the substrate holder and the heat insulating cylinder are connected and fixed to each other by the substrate holder fixing member.

特許第３３７８２４１号公報Japanese Patent No. 3378241

ところで、縦型熱処理装置においては、上記ボートを２個使用すると共に、ウエハの移載を行うためにボートを載置するボート載置台と、該ボート載置台と保温筒との間でボートの搬送を行うボート搬送機構とを採用し、一方のボートを熱処理炉内に搬入して熱処理を行っている間に、ボート載置台上の他方のボートに対するウエハの移載を行うようにした、いわゆるツーボートシステムを採用したものがある。   By the way, in the vertical heat treatment apparatus, two boats are used, a boat mounting table on which the boat is mounted for transferring the wafer, and transfer of the boat between the boat mounting table and the heat insulating cylinder. And a boat transfer mechanism that performs wafer transfer while carrying one of the boats into a heat treatment furnace and performing heat treatment while transferring the wafer to the other boat on the boat mounting table. Some have adopted a boat system.

しかしながら、このようなツーボートシステムを採用した縦型熱処理装置においては、保温筒上のボートの移替えを伴うため、基板保持具固定部材により保温筒と基板保持具とを連結固定する構造を採用することが難しく、地震等の外力を受けると保温筒上のボートやボート載置台上のボートだけでなく、ボート搬送機構上のボートも転倒する恐れがある。なお、本出願人は、保温筒上のボート及びボート載置台上のボートの転倒をそれぞれ防止することができるようにした縦型熱処理装置及び縦型熱処理方法を先に出願している。   However, in the vertical heat treatment apparatus that employs such a two-boat system, the boat on the heat insulation cylinder is transferred, so a structure in which the heat insulation cylinder and the substrate holder are connected and fixed by the substrate holder fixing member is adopted. When an external force such as an earthquake is received, not only the boat on the heat insulating cylinder and the boat on the boat mounting table but also the boat on the boat transport mechanism may fall down. The present applicant has previously applied for a vertical heat treatment apparatus and a vertical heat treatment method that can prevent the boat on the heat insulating cylinder and the boat on the boat mounting table from overturning.

本発明は、上記事情を考慮してなされたものであり、ツーボートシステムでありながら地震等の外力によるボート搬送機構上のボートの転倒を簡単な構造で防止することができる縦型熱処理装置及び縦型熱処理方法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 a vertical heat treatment apparatus capable of preventing a boat from overturning on a boat transport mechanism due to an external force such as an earthquake with a simple structure while being a two-boat system, and An object is to provide a vertical heat treatment method.

上記目的を達成するために、第１の発明は、熱処理炉と、該熱処理炉の炉口を閉塞する蓋体と、該蓋体上に保温筒を介して載置され多数の基板を多段に保持する基板保持具と、上記蓋体を昇降させて基板保持具を熱処理炉内に搬入・搬出する昇降機構と、上記基板保持具が熱処理炉内にあるときにもう一つの基板保持具を基板の移載のために載置する保持具載置台と、該保持具載置台と上記保温筒との間で基板保持具の搬送を行う保持具搬送機構とを備えた縦型熱処理装置において、上記保持具搬送機構に基板保持具の転倒を規制する転倒規制部材を設けたことを特徴とする。   In order to achieve the above object, a first invention comprises a heat treatment furnace, a lid for closing the furnace port of the heat treatment furnace, and a plurality of substrates placed on the lid via a heat insulating cylinder in multiple stages. A substrate holder for holding, a lifting mechanism for moving the substrate holder up and down to bring the substrate holder into and out of the heat treatment furnace, and another substrate holder when the substrate holder is in the heat treatment furnace. In a vertical heat treatment apparatus provided with a holder mounting table to be mounted for transfer, and a holder transport mechanism for transporting a substrate holder between the holder mounting base and the heat retaining cylinder, The holder transport mechanism is provided with a tipping restriction member for restricting the tipping of the substrate holder.

第２の発明は、熱処理炉の炉口を閉塞する蓋体上に、多数の基板を多段に保持した基板保持具を保温筒を介して載置し、蓋体を上昇させて基板保持具を熱処理炉内に搬入することにより基板を熱処理し、この熱処理中に保持具載置台上のもう一つの基板保持具に対する基板の移載を行い、熱処理後に熱処理炉から搬出した保温筒上の基板保持具と載置台上の基板保持具とを保持具搬送機構により移替える縦型熱処理方法において、上記保持具搬送機構が転倒規制部材により基板保持具の転倒を規制した状態で基板保持具を搬送することを特徴とする。   According to a second aspect of the present invention, a substrate holder holding a number of substrates in multiple stages is placed on a lid that closes the furnace port of the heat treatment furnace via a heat retaining cylinder, and the lid is raised to remove the substrate holder. The substrate is heat-treated by carrying it into the heat treatment furnace, and during this heat treatment, the substrate is transferred to another substrate holder on the holder mounting table, and the substrate is held on the heat insulating cylinder carried out of the heat treatment furnace after the heat treatment. In the vertical heat treatment method in which the holder and the substrate holder on the mounting table are transferred by the holder transport mechanism, the holder transport mechanism transports the substrate holder in a state in which the fall of the substrate holder is regulated by the fall regulation member. It is characterized by that.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片を有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that the overturning restricting member has a restricting piece that faces the upper surface of the bottom plate supported by the support portion with a gap.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片と、該規制片を側方から突没させる駆動部とを有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that the overturning restricting member has a restricting piece that faces the upper surface of the bottom plate supported by the support part with a gap and a drive part that protrudes and retracts the restricting piece from the side.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部の後方から立ち上がって設けられ基板保持具の天板を押える天板押え部を有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that the overturning restricting member has a top plate pressing portion that rises from the rear of the support portion and presses the top plate of the substrate holder.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の上面には規制溝が形成され、上記転倒規制部材は、上記規制溝に対して微少な隙間を持って対峙する規制バーを有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that a restriction groove is formed on the upper surface of the bottom plate of the base holder, and that the overturning restriction member has a restriction bar that faces the restriction groove with a slight gap.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な横穴が形成され、上記転倒規制部材は、上記横穴に挿入される規制バーを有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that parallel lateral holes are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restricting bar inserted into the lateral hole.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な側溝が形成され、上記転倒規制部材は、上記側溝に挿入される規制バーを有していることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that parallel side grooves are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restricting bar inserted into the side groove.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板には縦穴が形成され、上記転倒規制部材は、上記支持部の上面に突設され上記縦穴に微少隙間を有して嵌合される規制突起部からなることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, It is preferable that a vertical hole is formed in the bottom plate of the base holder, and the overturning restricting member includes a restricting protrusion that protrudes from the upper surface of the support portion and fits in the vertical hole with a small gap.

上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板はリング状に形成され、上記転倒規制部材は、上記支持部の上面に突設され上記リング状の底板の内周壁に微少隙間を有して対峙する複数の規制突起部からなることが好ましい。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The bottom plate of the base holder is formed in a ring shape, and the overturning restricting member protrudes from the upper surface of the support portion and includes a plurality of restricting protrusions facing each other with a minute gap on the inner peripheral wall of the ring-shaped bottom plate. It is preferable to become.

本発明によれば、ツーボートシステムでありながら地震等の外力によるボート搬送機構（保持具搬送機構）上のボート（基板保持具）の転倒を簡単な構造で防止することができる。   ADVANTAGE OF THE INVENTION According to this invention, even if it is a two-boat system, the fall of the boat (board | substrate holder) on the boat conveyance mechanism (holding material conveyance mechanism) by external forces, such as an earthquake, can be prevented with a simple structure.

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に係る縦型熱処理装置を概略的に示す縦断面図、図２は同縦型熱処理装置のローディングエリア内の構成を概略的に示す平面図、図３は保温筒上のウエハボートの載置状態を概略的に示す斜視図、図４は搬送機構によりウエハボートを保温筒上に載置する状態を示す斜視図、図５は係止部と被係止部が係止可能になった状態を示す斜視図である。   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 longitudinal sectional view schematically showing a vertical heat treatment apparatus according to an embodiment of the present invention, FIG. 2 is a plan view schematically showing a configuration in a loading area of the vertical heat treatment apparatus, and FIG. FIG. 4 is a perspective view schematically showing a state where the wafer boat is placed on the cylinder, FIG. 4 is a perspective view showing a state where the wafer boat is placed on the heat insulation cylinder by the transfer mechanism, and FIG. 5 is a locking portion and a locked portion. It is a perspective view which shows the state which became able to latch.

図１ないし図２において、１はクリーンルーム内に設置される半導体製造装置例えば縦型熱処理装置であり、この熱処理装置１は装置の外郭を形成する筐体２を備えている。この筐体２内には、基板例えば半導体ウエハｗを複数枚収納した収納容器であるキャリア３の搬送・保管を行うための搬送保管領域Ｓａと、多数例えば１００〜１５０枚程度のウエハを上下方向に所定ピッチで多段に搭載するボート４と上記キャリア３との間でウエハの移載作業や、熱処理炉５へのボート４の搬入・搬出作業を行うための作業領域（移載領域）であるローディングエリアＳｂとが設けられている。上記搬送保管領域ＳａとローディングエリアＳｂとは隔壁６によって仕切られている。   1 and 2, reference numeral 1 denotes a semiconductor manufacturing apparatus installed in a clean room, for example, a vertical heat treatment apparatus. The heat treatment apparatus 1 includes a housing 2 that forms an outer shell of the apparatus. In the housing 2, a transport storage area Sa for transporting and storing a carrier 3, which is a storage container storing a plurality of substrates, for example, semiconductor wafers w, and a large number of, for example, about 100 to 150 wafers, are vertically arranged. A work area (transfer area) for transferring wafers between the boat 4 loaded in multiple stages at a predetermined pitch and the carrier 3 and for carrying the boat 4 into and out of the heat treatment furnace 5. A loading area Sb is provided. The conveyance storage area Sa and the loading area Sb are partitioned by a partition wall 6.

上記キャリア３は、所定口径例えば直径３００ｍｍのウエハを水平状態で上下方向に所定間隔で多段に複数枚例えば１３〜２５枚程度収容可能で持ち運び可能なプラスチック製の容器からなり、その前面部に開口形成されたウエハ取出口にこれを気密に塞ぐための蓋を着脱可能に備えている（図示省略）。   The carrier 3 is made of a plastic container that can hold and carry a plurality of wafers having a predetermined diameter, for example, 300 mm in a horizontal state in multiple stages at predetermined intervals in the vertical direction. A lid for airtightly closing the formed wafer outlet is detachably provided (not shown).

上記筐体２の前面部には、オペレータあるいは搬送ロボットによりキャリア３を搬入搬出するための搬入出口７が設けられ、この搬入出口７には上下にスライド開閉するドア８が設けられている。搬送保管領域Ｓａには、搬入出口７近傍にキャリア３を載置するための載置台９が設けられ、この載置台９の後部にはキャリア３の蓋を開けてウエハＷの位置および枚数を検出するセンサ機構１０が設けられている。また、載置台９の上方および隔壁６側の上方には、複数のキャリア３を保管しておくための保管棚１１が設けられている。   A loading / unloading port 7 for loading / unloading the carrier 3 by an operator or a transfer robot is provided on the front surface of the housing 2, and the loading / unloading port 7 is provided with a door 8 that slides up and down. In the transfer storage area Sa, a mounting table 9 for mounting the carrier 3 is provided in the vicinity of the loading / unloading port 7, and the lid of the carrier 3 is opened at the rear of the mounting table 9 to detect the position and number of wafers W. A sensor mechanism 10 is provided. A storage shelf 11 for storing a plurality of carriers 3 is provided above the mounting table 9 and above the partition wall 6.

搬送保管領域Ｓａ内の上記隔壁６側には、ウエハの移載を行うために、キャリア３を載置するための移載ステージ１２が設けられている。搬送保管領域Ｓａには、上記載置台９、保管棚１１および移載ステージ１２の間でキャリア３の搬送を行うためのキャリア搬送機構１３が設けられている。   A transfer stage 12 for mounting the carrier 3 is provided on the side of the partition wall 6 in the transfer storage area Sa in order to transfer the wafer. In the transport and storage area Sa, a carrier transport mechanism 13 for transporting the carrier 3 between the mounting table 9, the storage shelf 11, and the transfer stage 12 is provided.

キャリア搬送領域Ｓａは、図示しない空気清浄機（ファン・フィルタユニット）により清浄化された大気雰囲気とされている。ローディングエリアＳｂも、その一側に設けた空気清浄機（ファン・フィルタユニット）１４により清浄化されており、陽圧の大気雰囲気又は不活性ガス（例えばＮ２ガス）雰囲気とされている。上記隔壁６には、移載ステージ１２に載置されたキャリア３の前面部を搬送保管領域Ｓａ側から当接させてキャリア３内とローディングエリアＳｂ内を連通するための図示しない開口部が設けられていると共に、該開口部をローディングエリアＳｂ側から閉鎖する扉１５が開閉可能に設けられている。開口部は、キャリア３の取出口とほぼ同口径に形成されており、開口部からキャリア３内のウエハの出し入れが可能になっている。 The carrier transport area Sa is an air atmosphere cleaned by an air cleaner (fan / filter unit) (not shown). The loading area Sb is also cleaned by an air cleaner (fan / filter unit) 14 provided on one side thereof, and is set to a positive pressure atmospheric atmosphere or an inert gas (for example, N 2 gas) atmosphere. The partition wall 6 is provided with an opening (not shown) for bringing the front surface of the carrier 3 placed on the transfer stage 12 into contact with the carrier storage area Sa to communicate the inside of the carrier 3 and the loading area Sb. In addition, a door 15 that closes the opening from the loading area Sb side is provided to be openable and closable. The opening is formed to have substantially the same diameter as the outlet of the carrier 3, and the wafer in the carrier 3 can be taken in and out from the opening.

上記扉１５には、キャリア３の蓋を開閉する図示しない蓋開閉機構および扉１５をローディングエリアＳｂ側から開閉する図示しない扉開閉機構が設けられ、この扉開閉機構により扉１５および蓋がローディングエリアＳｂ側に開放移動され、更にウエハの移載の邪魔にならないように上方または下方へ移動（退避）されるようになっている。上記移載ステージ１２の下方には、結晶方向を揃えるためにウエハの周縁部に設けられているノッチ（切欠部）を一方向に整列させるためのノッチ整列機構１６が設けられている。このノッチ整列機構１６は、ローディングエリアＳｂ側に臨んで開放されており、後述する移載機構２４により移載ステージ１２上のキャリア３から移載されるウエハのノッチを整列させるように構成されている。   The door 15 is provided with a lid opening / closing mechanism (not shown) for opening and closing the lid of the carrier 3 and a door opening / closing mechanism (not shown) for opening and closing the door 15 from the loading area Sb side. The door opening mechanism opens and closes the door 15 and the lid to the loading area. It is moved to the Sb side and moved (retracted) upward or downward so as not to obstruct the transfer of the wafer. Below the transfer stage 12, there is provided a notch alignment mechanism 16 for aligning notches (notches) provided in the peripheral edge of the wafer in one direction in order to align the crystal direction. The notch alignment mechanism 16 is opened to the side of the loading area Sb, and is configured to align notches of wafers transferred from the carrier 3 on the transfer stage 12 by a transfer mechanism 24 described later. Yes.

一方、ローディングエリアＳｂの奥部上方には、下部に炉口５ａを有する縦型の熱処理炉５が設置されており、ローディングエリアＳｂには、多数例えば１００〜１５０枚程度のウエハｗを上下方向に所定間隔で多段に搭載した例えば石英製のボート４を蓋体１７の上部に保温筒１９を介して載置して熱処理炉５内への搬入・搬出及び炉口５ａを開閉する蓋体１７の昇降を行う昇降機構１８が設けられている。蓋体１７の上部にはその閉塞時に炉口５ａ部分からの放熱を抑制する保温筒（遮熱体）１９が載置され、この保温筒１９の上部にボート４が載置されている。熱処理炉５は、反応管と、この反応管の周囲に設けられた加熱装置（ヒータ）とから主に構成され、反応管には処理ガスや不活性ガス（例えばＮ２）を導入するガス導入系と、反応管内を所定の真空度に減圧排気可能な真空ポンプを有する排気系が接続されている。 On the other hand, a vertical heat treatment furnace 5 having a furnace port 5a in the lower part is installed in the upper part of the loading area Sb, and a large number of, for example, about 100 to 150 wafers w are vertically arranged in the loading area Sb. For example, quartz boats 4 mounted in multiple stages at predetermined intervals are placed on the upper portion of the lid body 17 via a heat insulating cylinder 19 to carry in and out of the heat treatment furnace 5 and to open and close the furnace opening 5a. An elevating mechanism 18 for elevating and lowering is provided. A heat insulating cylinder (heat insulating body) 19 that suppresses heat radiation from the furnace port 5 a when the cover 17 is closed is placed on the top of the lid body 17, and the boat 4 is placed on the heat insulating cylinder 19. The heat treatment furnace 5 is mainly composed of a reaction tube and a heating device (heater) provided around the reaction tube, and gas introduction for introducing a processing gas and an inert gas (for example, N 2 ) into the reaction tube. The system and an exhaust system having a vacuum pump capable of evacuating the inside of the reaction tube to a predetermined degree of vacuum are connected.

上記蓋体１７には保温筒１９を介してボート４を回転する回転機構２０が設けられている。炉口５ａの近傍には、蓋体１７が開放されて熱処理後のボート４が搬出された際に炉口５ａを遮蔽するためのシャッター２１が水平方向に開閉移動可能（旋回可能）に設けられている。このシャッター２１は、これを水平方向に旋回移動させて開閉させる図示しないシャッター駆動機構を有している。   The lid 17 is provided with a rotating mechanism 20 that rotates the boat 4 via a heat insulating cylinder 19. In the vicinity of the furnace port 5a, a shutter 21 for shielding the furnace port 5a when the cover 17 is opened and the heat-treated boat 4 is carried out is provided so as to be openable and closable (turnable) in the horizontal direction. ing. The shutter 21 has a shutter drive mechanism (not shown) that opens and closes by rotating the shutter 21 in the horizontal direction.

ローディングエリアＳｂの一側すなわち空気清浄機１４側には、ウエハｗの移載等のためにボート４を載置しておくためのボート載置台（ボートステージ、保持具載置台ともいう）２２が設けられている。このボート載置台２２は、１つでもよいが、図２に示すように空気清浄機１４に沿って前後に配置された第１載置台（チャージステージ）２２ａと第２載置台（スタンバイステージ）２２ｂの２つからなっていることが好ましい。   On one side of the loading area Sb, that is, on the air purifier 14 side, there is a boat mounting table (also referred to as a boat stage or a holder mounting table) 22 for mounting the boat 4 for transferring wafers w or the like. Is provided. The number of the boat mounting table 22 may be one, but as shown in FIG. 2, the first mounting table (charge stage) 22 a and the second mounting table (standby stage) 22 b that are arranged forward and backward along the air cleaner 14. It is preferable that it consists of two.

ローディングエリアＳｂ内の下方であって、第１載置台２２ａと第２載置台２２ｂの間には、ボート載置台２２と蓋体１７上の保温筒１９との間、具体的にはボート載置台２２の第１載置台２２ａ若しくは第２載置台２２ｂと降下された蓋体１７上の保温筒１９との間、及び第１載置台２２ａと第２載置台２２ｂとの間でボート４の搬送を行うボート搬送機構（保持具搬送機構）２３が設けられている。また、ローディングエリアＳｂ内には、移載ステージ１２上のキャリア３とボート載置台２２上のボート４との間、具体的には移載ステージ１２上のキャリア３とノッチ整列機構１６との間、ノッチ整列機構１６とボート載置台２２の第１載置台２２ａ上のボート４との間、および第１載置台２２ａ上の熱処理後のボート４と移載ステージ１２上の空のキャリア３との間でウエハｗの移載を行うための移載機構２４が設けられている。   Below the loading area Sb, between the first mounting table 22a and the second mounting table 22b, between the boat mounting table 22 and the heat insulating cylinder 19 on the lid 17, specifically, the boat mounting table. The boat 4 is transported between the first mounting table 22a or the second mounting table 22b of 22 and the heat retaining cylinder 19 on the lowered lid 17 and between the first mounting table 22a and the second mounting table 22b. A boat transport mechanism (holder transport mechanism) 23 is provided. Further, in the loading area Sb, between the carrier 3 on the transfer stage 12 and the boat 4 on the boat mounting table 22, specifically, between the carrier 3 on the transfer stage 12 and the notch alignment mechanism 16. Between the notch alignment mechanism 16 and the boat 4 on the first mounting table 22a of the boat mounting table 22, and between the boat 4 after the heat treatment on the first mounting table 22a and the empty carrier 3 on the transfer stage 12. A transfer mechanism 24 for transferring the wafer w is provided.

ボート４は、図３に示すように天板４ａと底板４ｂの間に複数例えば３本の支柱４ｃを介設してなる。上記支柱４ｃにはウエハｗを多段に保持するための溝部４ｄが所定ピッチで櫛刃状に形成されている。正面側の左右の支柱４ｃ間は、ウエハを出し入れするために拡開されている。   As shown in FIG. 3, the boat 4 includes a plurality of, for example, three columns 4c interposed between the top plate 4a and the bottom plate 4b. Grooves 4d for holding the wafers w in multiple stages are formed in the pillars 4c in a comb blade shape at a predetermined pitch. The space between the left and right support columns 4c on the front side is widened to take in and out the wafer.

ボート搬送機構２３は、一つのボート４を垂直に支持して水平に伸縮可能なアームを有している。ボート搬送機構２３は、水平旋回可能な第１アーム２３ａと、この第１アーム２３ａの先端部に水平旋回可能に軸支されボート４の下面（底板４ｂの下面）を支持する支持部である平面略Ｕ字状の第２アーム（ハンド）２３ｂと、第１アーム２３ａ及び第２アーム２３ｂを駆動する駆動部２３ｃと、これら全体を昇降動させる昇降機構２３ｄとを備え、第１アーム２３ａと第２アーム２１ｂの水平旋回動作を同期させることにより、水平直線方向の搬送が可能に構成されている。このようにしてアームを伸縮させることによりボート４を搬送するエリアを必要最小限にすることが可能で、装置幅と奥行き寸法を減少できる。第２アーム２３ｂの上面にはボート４の底板４ｂの下面を複数点で支持する支持片６０が設けられている。なお、支持片６０は、例えば耐熱性樹脂により形成されており、ボート４の下面を複数点例えば３点で支持するようになっていることが好ましい。   The boat transport mechanism 23 has an arm that supports one boat 4 vertically and can be expanded and contracted horizontally. The boat transport mechanism 23 is a plane that is a first arm 23a that can be swiveled horizontally, and a support portion that is pivotally supported at the tip of the first arm 23a so as to be able to swivel horizontally and supports the lower surface of the boat 4 (the lower surface of the bottom plate 4b). A substantially U-shaped second arm (hand) 23b, a drive unit 23c for driving the first arm 23a and the second arm 23b, and an elevating mechanism 23d for raising and lowering the whole are provided. By synchronizing the horizontal turning operation of the two arms 21b, it is possible to transport in the horizontal linear direction. By extending and retracting the arm in this way, the area for transporting the boat 4 can be minimized, and the apparatus width and depth dimensions can be reduced. Support pieces 60 that support the lower surface of the bottom plate 4b of the boat 4 at a plurality of points are provided on the upper surface of the second arm 23b. In addition, it is preferable that the support piece 60 is formed, for example with heat resistant resin, and supports the lower surface of the boat 4 by multiple points, for example, 3 points.

上記移載機構２４は、水平回動可能な基台２４ａ上に半導体ウエハを載置する複数枚例えば５枚の薄板状の移載アーム２４ｂを進退可能に設けてなる。上記移載アーム２４ｂとしては、５枚のうちの中央の枚葉移載用の１枚の移載アームと、他の４枚の移載アームとが基台２４ａ上に独立して進退可能に設けられていると共に、他の４枚の移載アームが中央の移載アームを基準として上下方向にピッチ変換可能に構成されていることが好ましい。基台２４ａは、ローディングエリアＳｂの他側に設けられた昇降機構２４ｃにより昇降可能とされている。   The transfer mechanism 24 is provided with a plurality of, for example, five thin plate-like transfer arms 24b on which a semiconductor wafer is mounted on a horizontally rotatable base 24a so as to be able to advance and retreat. As the transfer arm 24b, one transfer arm for transferring the central sheet of the five sheets and the other four transfer arms can be moved forward and backward independently on the base 24a. It is preferable that the other four transfer arms are configured to be capable of pitch conversion in the vertical direction with the central transfer arm as a reference. The base 24a can be raised and lowered by an elevating mechanism 24c provided on the other side of the loading area Sb.

上記保温筒１９上に載置されたボート４の地震等の外力による転倒を防止するために、上記保温筒１９の上部とボート４の底部４ｂには、図５〜図９に示すようにボート４をボート搬送機構２３により保温筒１９の直上に位置させた状態で保温筒１９を回転機構２０により所定角度例えば９０度回転させることで互いに係止可能又は解除可能となる係止部である引っ掛け部２５と被係止部である係止溝部２６が設けられている。   In order to prevent the boat 4 placed on the heat insulating cylinder 19 from falling due to an external force such as an earthquake, the upper part of the heat insulating cylinder 19 and the bottom 4b of the boat 4 are provided with a boat as shown in FIGS. The hook 4 is a latching portion that can be locked or released by rotating the heat retaining tube 19 by a predetermined angle, for example, 90 degrees, with the rotating mechanism 20 in a state where the 4 is positioned directly above the heat retaining tube 19 by the boat transport mechanism 23. The part 25 and the locking groove part 26 which is a to-be-latched part are provided.

図３〜図５に示すように上記ボート４の底板４ｂは環状であり、上記保温筒１９は上記底板４ｂの下面をその周方向に沿って適宜間隔で支持する複数例えば４本の支柱１９ａを有している。更に具体的には、保温筒１９は、円板状のベース部１９ｂと、このベース部１９ｂに立設された複数の支柱１９ａと、これら支柱１９ａに沿って高さ方向にスぺーサ１９ｊを介して適宜間隔で多段に配置された複数枚の遮熱板１９ｃとから主に構成されており、これらの構成部材は例えば石英によって形成されている。支柱１９ａは円筒状であり、上端部にはその開口端を塞ぐ上端部材１９ｅが一体的に設けられている。また、内外の圧力差による支柱１９ａの破損を防止するために支柱１９ａの側面には支柱１９ａの内外を連通する孔部１９ｆが適宜形成されている。支柱１９ａの上端部すなわち上端部材１９ｅにはボート４の底板４ｂの下面を受ける載置面１９ｇと、該載置面１９ｇより立上り底板４ｂの内周に接して底板４ｂを位置決めする位置決め部１９ｈとが形成されている。底板４ｂの内周に位置決め部１９ｈが嵌合ないし係合し易くするために位置決め部１９ｈの上端縁部には傾斜面１９ｉが形成されていることが好ましい。   As shown in FIGS. 3 to 5, the bottom plate 4 b of the boat 4 is annular, and the heat retaining cylinder 19 includes a plurality of, for example, four support columns 19 a that support the lower surface of the bottom plate 4 b at appropriate intervals along the circumferential direction. Have. More specifically, the heat retaining cylinder 19 includes a disk-shaped base portion 19b, a plurality of support posts 19a provided upright on the base portion 19b, and a spacer 19j in the height direction along the support posts 19a. And a plurality of heat shield plates 19c arranged in multiple stages at appropriate intervals, and these constituent members are made of, for example, quartz. The support column 19a has a cylindrical shape, and an upper end member 19e for closing the opening end is integrally provided at the upper end portion. Further, in order to prevent damage to the support column 19a due to a pressure difference between the inside and the outside, a hole portion 19f that communicates the inside and outside of the support column 19a is appropriately formed on the side surface of the support column 19a. A mounting surface 19g for receiving the lower surface of the bottom plate 4b of the boat 4 is provided on the upper end portion of the support column 19a, that is, the upper end member 19e, and a positioning portion 19h for contacting the inner periphery of the rising bottom plate 4b from the mounting surface 19g. Is formed. An inclined surface 19i is preferably formed on the upper edge of the positioning portion 19h so that the positioning portion 19h can be easily fitted or engaged with the inner periphery of the bottom plate 4b.

ボート４の環状の底板４ｂを支持すべくその周方向に沿って適宜間隔で配置された上記支柱１９ａに外接する外接円の直径は底板４ｂの外径よりも小さく形成されており、ボート搬送機構２３の第２アーム２３ｂがボート４の底板４ｂの下面を支持して保温筒１９の支柱１９ａの上端部に載置する際に支柱１９ａと干渉しないようになっている。そして、これら支柱１９ａの外側部に溝状の被係止部である係止溝部２６が設けられ、上記底板４ｂの下面には上記各係止溝部２６に係止される鉤状（断面Ｌ字状）の複数の係止部である引っ掛け部２５が上記係止溝部２６と対応する位置に設けられている。   A diameter of a circumscribed circle circumscribing the support columns 19a arranged at appropriate intervals along the circumferential direction so as to support the annular bottom plate 4b of the boat 4 is formed smaller than the outer diameter of the bottom plate 4b. When the second arm 23b of 23 supports the lower surface of the bottom plate 4b of the boat 4 and is placed on the upper end portion of the support column 19a of the heat retaining cylinder 19, it does not interfere with the support column 19a. Further, a locking groove portion 26 which is a groove-shaped locked portion is provided on the outer side portion of these support columns 19a, and a hook-like shape (L-shaped cross section) locked to each locking groove portion 26 on the lower surface of the bottom plate 4b. A hook portion 25 that is a plurality of locking portions is provided at a position corresponding to the locking groove portion 26.

引っ掛け部２５は、底板４ｂの下面から垂下された垂直部２５ａと、この垂直部２５ａの下端から半径方向内方に突出された水平部２５ｂとからなっている。また、上記係止溝部２６は、ボート搬送機構２３によりボート４を保温筒１９の直上に搬送して保持した状態で保温筒１９を回転機構２０により所定角度回転させた時に、その係止溝部２６内に周方向から引っ掛け部２５の水平部２５ｂが入り込むが、その際に引っ掛け部２５の水平部２５ｂと干渉しない溝幅及び溝深さに形成されている。また、引っ掛け部２５が係止溝部２６の位置に位置した係止可能位置で保温筒１９の回転を停止され、ボート搬送機構２３によりボート４が更に下降されて保温筒１９の支柱１９ａ上に載置されたときにも、引っ掛け部２５の水平部２５ｂが係止溝部２６に接しないように溝幅が設計されていることがパーティクルの発生を抑制する上で好ましい（図６参照）。上記水平部２５ｂの先端及び係止溝部２６の底面は保温筒１９の回転中心を中心とする曲面状に形成されていることが好ましい。   The hook portion 25 is composed of a vertical portion 25a suspended from the lower surface of the bottom plate 4b and a horizontal portion 25b projecting radially inward from the lower end of the vertical portion 25a. Further, the locking groove portion 26 is formed when the heat retaining cylinder 19 is rotated by a predetermined angle by the rotation mechanism 20 in a state where the boat 4 is transported and held immediately above the heat retaining cylinder 19 by the boat transport mechanism 23. The horizontal portion 25b of the hooking portion 25 enters from the circumferential direction, and is formed to have a groove width and groove depth that do not interfere with the horizontal portion 25b of the hooking portion 25 at that time. In addition, the rotation of the heat retaining cylinder 19 is stopped at the lockable position where the hook portion 25 is positioned at the position of the locking groove portion 26, and the boat 4 is further lowered by the boat transport mechanism 23 to be placed on the column 19 a of the heat retaining cylinder 19. In order to suppress the generation of particles, it is preferable that the groove width is designed so that the horizontal portion 25b of the hook portion 25 does not come into contact with the locking groove portion 26 even when placed (see FIG. 6). It is preferable that the tip of the horizontal portion 25 b and the bottom surface of the locking groove portion 26 are formed in a curved shape centering on the rotation center of the heat retaining cylinder 19.

上記回転機構２０としては、例えば特許第３５７９２７８号公報に記載のものが適用されている。すなわち、図１０に示すように上記蓋体１７の底部には軸孔を有する固定部材２７が設けられ、この固定部材２７の外周には有底筒状の回転筒体２８が上下に配した図示しない軸受及び磁性流体シールを介して回転可能に設けられ、この回転筒体２８の底部には上記固定部材２７の軸孔に遊嵌通された回転軸２９が設けられている。この回転軸２９の上端部が蓋体１７の中央部を遊貫通し、この回転軸２９の上端部には蓋体１７の上部に微少隙間を存して配置した回転テーブル３０が取付けられ、この回転テーブル３０上に上記保温筒１９が載置され、保温筒１９のベース部１９ｂが固定部材３１により回転テーブル３０に固定されている。回転筒体２８にはこれを回転駆動するためのモータ３２がタイミングベルト３３を介して連結されている。   As the rotation mechanism 20, for example, the one described in Japanese Patent No. 3579278 is applied. That is, as shown in FIG. 10, a fixing member 27 having a shaft hole is provided at the bottom of the lid body 17, and a bottomed cylindrical rotating cylinder 28 is vertically arranged on the outer periphery of the fixing member 27. The rotary cylinder 28 is rotatably provided via a bearing and a magnetic fluid seal, and a rotary shaft 29 loosely fitted in the shaft hole of the fixing member 27 is provided at the bottom of the rotary cylinder 28. The upper end portion of the rotary shaft 29 passes through the central portion of the lid body 17, and the rotary table 30 is attached to the upper end portion of the rotary shaft 29 with a slight gap disposed above the lid body 17. The heat insulating cylinder 19 is placed on the rotary table 30, and the base portion 19 b of the heat insulating cylinder 19 is fixed to the rotary table 30 by a fixing member 31. A motor 32 is connected to the rotating cylinder 28 via a timing belt 33 for rotationally driving the rotating cylinder 28.

また、上記引っ掛け部２５と上記係止溝部２６が係止可能となる位置又は解除可能となる位置に保温筒１９を自動で回転制御するために、上記回転機構２０は、保温筒１９の回転方向の原点位置を検出するセンサ３４と、該センサ３４からの検出信号に基いて上記引っ掛け部２５と上記係止溝部２６が係止可能となる位置又は解除可能となる位置に保温筒１９を回転制御するための制御装置３５とを有していることが好ましい。上記回転筒体２８の外周部には被検出部材（キッカー）３６が突設され、この被検出部材３６を検出するためのセンサ３４が蓋体１７の下方に設けられている。上記制御装置３５は、熱処理時には保温筒１９を介してボート４を連続的に回転させる制御を行うようになっている。   Further, in order to automatically control the rotation of the heat retaining cylinder 19 at a position where the hooking portion 25 and the locking groove portion 26 can be locked or a position where the locking groove portion 26 can be released, the rotating mechanism 20 rotates the direction of the heat retaining cylinder 19. Rotation control of the heat retaining cylinder 19 at a position where the hooking portion 25 and the locking groove portion 26 can be locked or released based on a detection signal from the sensor 34 for detecting the origin position of the sensor 34. It is preferable to have a control device 35 for this purpose. A detected member (kicker) 36 protrudes from the outer peripheral portion of the rotating cylinder 28, and a sensor 34 for detecting the detected member 36 is provided below the lid body 17. The control device 35 performs control for continuously rotating the boat 4 via the heat retaining cylinder 19 during heat treatment.

一方、ボート搬送機構２３によるボート４の搬送中にそのボート４が地震等の外力で転倒するのを防止するために、図４ないし図１４に示すように上記第２アーム２３ｂの上部には該第２アーム２３ｂとの間でボート４の底板４ｂを上下から挟むように規制する転倒規制部材３７が設けられている。この転倒規制部材３７は、第２アーム２３ｂの上面部の基部側（支持片６０の後方）に設けられ、支持片６０に支持されたボート４の底板４ｂの上面に所定の間隔を持って対峙する規制片３７ａを有している。規制部材３７は、第２アーム２３ｂの基部側上面に固着具例えばネジ６１で固定される基部３７ｂと、該基部３７ｂから前方に延出された平面略Ｕ字状の規制片３７ａとからなり、この規制片３７ａと第２アーム２３ｂの支持片６０との間にはボート４の底板４ｂが水平方向から非接触で入り込める空間が形成されている。規制片３７ａは第２アーム２３ｂと対応して平面Ｕ字状に形成されている。なお、規制片３７ａの基部側には支柱４ｃとの干渉を避けるための切欠部３７ｃが形成されており（図４参照）、また前方へ延出された左右の規制片３７ａは支柱４ｃとの干渉を避けるように左右の幅寸法が設定されている。転倒規制部材３７は、ボート搬送機構２３のアーム２３ａ，２３ｂと同様、例えばアルミニウムによって形成されている。   On the other hand, in order to prevent the boat 4 from toppling over due to an external force such as an earthquake while the boat 4 is being transported by the boat transport mechanism 23, the upper portion of the second arm 23 b is placed on the upper portion of the second arm 23 b as shown in FIGS. A fall regulation member 37 is provided for regulating the bottom plate 4b of the boat 4 from above and below between the second arm 23b. The overturning restricting member 37 is provided on the base side of the upper surface of the second arm 23 b (behind the support piece 60) and faces the upper surface of the bottom plate 4 b of the boat 4 supported by the support piece 60 with a predetermined interval. It has a regulating piece 37a. The restricting member 37 includes a base portion 37b fixed to the upper surface of the base portion side of the second arm 23b with a fixing tool, for example, a screw 61, and a substantially U-shaped restricting piece 37a extending forward from the base portion 37b. A space is formed between the restriction piece 37a and the support piece 60 of the second arm 23b so that the bottom plate 4b of the boat 4 can enter without contact from the horizontal direction. The restriction piece 37a is formed in a plane U shape corresponding to the second arm 23b. A notch 37c for avoiding interference with the support 4c is formed on the base side of the control piece 37a (see FIG. 4), and the left and right control pieces 37a extending forward are connected to the support 4c. The left and right width dimensions are set to avoid interference. The fall regulation member 37 is made of aluminum, for example, as with the arms 23 a and 23 b of the boat transport mechanism 23.

更に、ボート載置台２２上に載置されたボート４が地震等の外力で転倒するのを防止するために、次のような構成が採用されている。図２、図１１、図１２、図１４ないし図１５に示すようにボート載置台２２にはボート４を位置決めするためのボート位置決め機構（保持具位置決め機構）３８が設けられている。このボート位置決め機構３８はボート載置台２２上においてシリンダ３８ａにより直径方向に拡縮（接近離反）される一対のローラ３８ｂを有している。一方、ボート４の底板４ｂの内周には上記一対のローラ３８ｂが拡開（離反）したときに係合するＶ字状の位置決め係合溝４０が直径方向に対向して設けられている。位置決め係合溝４０は所定の角度θ例えば１２０度で拡開している。これによりボート４が多少ずれてボート載置台２２上に載置されたとしてもボート４が位置決めされるようになっている。   Furthermore, in order to prevent the boat 4 mounted on the boat mounting table 22 from being overturned by an external force such as an earthquake, the following configuration is adopted. As shown in FIGS. 2, 11, 12, 14 to 15, the boat mounting table 22 is provided with a boat positioning mechanism (holding member positioning mechanism) 38 for positioning the boat 4. The boat positioning mechanism 38 has a pair of rollers 38 b that are expanded and contracted (approached and separated) in the diameter direction by a cylinder 38 a on the boat mounting table 22. On the other hand, a V-shaped positioning engagement groove 40 that engages when the pair of rollers 38b is expanded (separated) is provided on the inner periphery of the bottom plate 4b of the boat 4 so as to face in the diametrical direction. The positioning engagement groove 40 is expanded at a predetermined angle θ, for example, 120 degrees. As a result, even if the boat 4 is slightly displaced and placed on the boat placing table 22, the boat 4 is positioned.

そして、上記ボート載置台２２にはボートを転倒しないように把持するボート把持機構（保持具把持機構）４１が設けられている。このボート把持機構４１は、上記ローラ３８ｂの上部にローラ３８ｂが位置決め係合溝４０に係合する時（ローラの拡開時）にボート４の底板４ｂの上面に対峙して該底板４ｂをボート載置台２２（詳しくはボート載置台の上面）との間で把持する鍔状の把持部４１ａを設けることにより構成されている。   The boat mounting table 22 is provided with a boat gripping mechanism (holding tool gripping mechanism) 41 for gripping the boat so as not to overturn. The boat gripping mechanism 41 faces the upper surface of the bottom plate 4b of the boat 4 when the roller 38b is engaged with the positioning engagement groove 40 on the upper portion of the roller 38b (when the roller is expanded). It is configured by providing a bowl-shaped gripping portion 41a that grips with the mounting table 22 (specifically, the upper surface of the boat mounting table).

ボート載置台２２の構成を更に詳述すると、ボート載置台２２は、固定板４２と、この固定板４２上に玉軸受４３を介して水平移動可能に支持された上板４４とを有し、この上板４４上にボート４を載置するようになっている。固定板４２及び上板４４は環状に形成されている。玉軸受４３は、環状のホルダ４３ａと、このホルダ４３ａに支持された多数の小球４３ｂとからなっている。上板４４は、上板４４と固定板４２の何れか一方に突設されたピン４５と、このピン４５が緩く嵌るように他方に形成された規制穴４６とにより所定の範囲内で水平移動可能になっている。また、上板４４と固定板４２との間には上板４４をその中心がボート載置台２２の中心位置に復帰するように付勢するための複数のバネ４７が取付けられている。   The configuration of the boat mounting table 22 will be described in further detail. The boat mounting table 22 includes a fixed plate 42 and an upper plate 44 supported on the fixed plate 42 via a ball bearing 43 so as to be horizontally movable. The boat 4 is placed on the upper plate 44. The fixed plate 42 and the upper plate 44 are formed in an annular shape. The ball bearing 43 includes an annular holder 43a and a large number of small balls 43b supported by the holder 43a. The upper plate 44 is horizontally moved within a predetermined range by a pin 45 protruding from one of the upper plate 44 and the fixed plate 42 and a restriction hole 46 formed on the other so that the pin 45 is loosely fitted. It is possible. A plurality of springs 47 are attached between the upper plate 44 and the fixed plate 42 to urge the upper plate 44 so that its center returns to the center position of the boat mounting table 22.

ボート載置台２２のうち、特に第１載置台２２ａは、ウエハｗの移載中に上板４４が水平移動しないようにするために、ボート４の位置決め後に上板４４を固定する上板固定機構４８が設けられている。この上板固定機構４８は、上片４９ａと下片４９ｂを有し、上片４９ａが上板４４の下面に固定され上片４９ａと下片４９ｂの間で固定板４２及び玉軸受４３を上下から所定の隙間を存して挟む断面コ字状の枠４９と、この枠４９の下片４９ｂに設けられ上片４９ａとの間で固定板４２及び玉軸受４３を挟んで固定する伸縮可能な押圧部５０ａを有するエアシリンダ５０とから構成されている。   Among the boat mounting tables 22, in particular, the first mounting table 22 a is an upper plate fixing mechanism that fixes the upper plate 44 after positioning the boat 4 so that the upper plate 44 does not move horizontally during the transfer of the wafer w. 48 is provided. The upper plate fixing mechanism 48 includes an upper piece 49a and a lower piece 49b. The upper piece 49a is fixed to the lower surface of the upper plate 44, and the fixing plate 42 and the ball bearing 43 are moved up and down between the upper piece 49a and the lower piece 49b. A frame 49 having a U-shaped cross-section sandwiched with a predetermined gap between and an upper piece 49a provided on the lower piece 49b of the frame 49, with the fixing plate 42 and the ball bearing 43 interposed therebetween, and can be expanded and contracted. It is comprised from the air cylinder 50 which has the press part 50a.

また、ボート載置台２２は、左右一対の上記シリンダ３８ａ，３８ａを取付けるための取付板５１を有し、この取付板５１には移動体５２を水平移動可能に支持するガイド５３が設けられ、その移動体５２に立設された支柱５４の上端部に上記ローラ３８ｂがその軸回りに回転可能に軸支されている。各ローラ３８ｂの上端部に上記把持部４１ａが鍔状に形成されている。上記ローラ３８ｂは熱処理後のボート４の底板４ｂに接するため、耐熱性を有する樹脂により形成されていることが好ましい。ボート載置台２２の一側にはボートの有無を検知するセンサ５５が設けられており、このセンサ５５がボート４が載置されたことを検知した時に位置決めを行うようになっている。   The boat mounting table 22 has a mounting plate 51 for mounting the pair of left and right cylinders 38a, 38a. The mounting plate 51 is provided with a guide 53 for supporting the moving body 52 so as to be horizontally movable. The roller 38b is pivotally supported on the upper end portion of the column 54 erected on the movable body 52 so as to be rotatable about its axis. The grip portion 41a is formed in a bowl shape at the upper end of each roller 38b. Since the roller 38b is in contact with the bottom plate 4b of the boat 4 after the heat treatment, the roller 38b is preferably formed of a heat-resistant resin. A sensor 55 for detecting the presence or absence of a boat is provided on one side of the boat mounting table 22, and positioning is performed when the sensor 55 detects that the boat 4 is mounted.

次に以上の構成からなる縦型熱処理装置１の作用ないし縦型熱処理方法について説明する。先ず、多数のウエハｗを多段に保持し、保温筒１９を介して蓋体１７上に載置されたボート４を、蓋体１７の上昇により熱処理炉５内に保温筒１９と共に搬入すると共に熱処理炉５の炉口５ａを蓋体１７で密閉する。そして、回転機構２０により保温筒１９を介してボート４を熱処理炉５内で回転させながら所定の温度、所定の圧力及び所定の処理ガス雰囲気下でウエハｗを所定時間熱処理する。この熱処理中にボート載置台２２の第１載置台２２ａ上のもう一つのボート４に対するウエハｗの移載を行う。この場合、先ず、ボート４に搭載されている熱処理後のウエハを移載機構２４により移載ステージ１２上の空のキャリア３に搬出し、次に、移載ステージ１２上に搬送された熱処理前のウエハを収納したキャリア３から上記空のボート４に熱処理前のウエハを搭載する。   Next, the operation of the vertical heat treatment apparatus 1 having the above configuration or the vertical heat treatment method will be described. First, a large number of wafers w are held in multiple stages, and the boat 4 placed on the lid body 17 via the heat insulation cylinder 19 is carried into the heat treatment furnace 5 together with the heat insulation cylinder 19 by the rise of the lid body 17 and subjected to heat treatment. The furnace port 5 a of the furnace 5 is sealed with a lid body 17. Then, the wafer w is heat-treated for a predetermined time under a predetermined temperature, a predetermined pressure, and a predetermined processing gas atmosphere while rotating the boat 4 in the heat treatment furnace 5 through the heat retaining cylinder 19 by the rotating mechanism 20. During this heat treatment, the wafer w is transferred to another boat 4 on the first mounting table 22a of the boat mounting table 22. In this case, first, the wafer after heat treatment mounted on the boat 4 is unloaded to the empty carrier 3 on the transfer stage 12 by the transfer mechanism 24, and then the wafer before heat treatment carried on the transfer stage 12 is transferred. Wafers before heat treatment are mounted on the empty boat 4 from the carrier 3 in which is stored.

上記熱処理炉５内における熱処理が終了すると、蓋体１７の下降によりボート４が熱処理炉５内からローディングエリアＳｂに搬出される。このボート４に対してボート搬送機構２３の第２アーム２３ｂが水平方向から接近し（図６参照）、第２アーム（ハンド）２３ｂと規制片３７ａの間にボート４の底板４ｂを位置させ、第２アームの上昇によりボート４を支持片６０で支持して所定高さだけ持ち上げ（図７参照）、この状態で回転機構２０により保温筒１９を所定の角度例えば９０度回転させて引っ掛け部２５と係止溝部２６が解除可能な位置にしたら（図８参照）、ボート４を更に所定高さ（引っ掛け部と保温筒の支柱が干渉しない高さ）まで持ち上げてからボート載置台２２の第２載置台２２ｂの方向へ搬送し（図９参照）、第２載置台２２ｂ上に載置する。このようにボート４の搬送においては、第２アーム２３ｂの支持片６０に支持されたボート４の底板４ｂの上面に対して転倒規制部材３７の規制片３７ａが所定の隙間を存して対峙しているため、地震や揺れなどの外力によってボート４が傾きかけたとしても、これを抑制してボート４の転倒を防止することができる。また、第２載置台２２ｂ上に載置されたボート４は位置決め機構３８により位置決めされると共に鍔状の転倒規制部３８ｃによりボート４の転倒が防止される。   When the heat treatment in the heat treatment furnace 5 is completed, the boat 4 is unloaded from the heat treatment furnace 5 to the loading area Sb by the lowering of the lid body 17. The second arm 23b of the boat transport mechanism 23 approaches the boat 4 from the horizontal direction (see FIG. 6), and the bottom plate 4b of the boat 4 is positioned between the second arm (hand) 23b and the regulating piece 37a. As the second arm is raised, the boat 4 is supported by the support piece 60 and lifted by a predetermined height (see FIG. 7). In this state, the heat retaining cylinder 19 is rotated by a predetermined angle, for example, 90 degrees by the rotation mechanism 20, and the hook 25 When the locking groove 26 is in a releasable position (see FIG. 8), the boat 4 is further lifted to a predetermined height (a height at which the hook portion and the column of the heat insulation cylinder do not interfere), and then the second of the boat mounting table 22 is reached. It is transported in the direction of the mounting table 22b (see FIG. 9) and mounted on the second mounting table 22b. As described above, when the boat 4 is transported, the regulation piece 37a of the fall regulation member 37 faces the upper surface of the bottom plate 4b of the boat 4 supported by the support piece 60 of the second arm 23b with a predetermined gap. Therefore, even if the boat 4 leans due to an external force such as an earthquake or a shake, this can be suppressed and the boat 4 can be prevented from falling. Further, the boat 4 mounted on the second mounting table 22b is positioned by the positioning mechanism 38, and the boat 4 is prevented from being overturned by the bowl-shaped overturning restricting portion 38c.

一方、第１載置台２２ａ上のボート４も位置決め機構３８により位置決めされると共に鍔状の転倒規制部３８ｃによりボート４の転倒が防止されている。この第１載置台２２ａ上のボート４は、転倒規制部３８ｃによる規制が解除された後、ボート搬送機構２３の第２アーム２３ｂに支持されて上記蓋体１７の保温筒１９の上方に搬送される。そして、ボート搬送機構２３によりボート４を保温筒１９上に下降させ、ボート４が保温筒１９上に載る直前に保温筒１９を回転機構２０により所定角度例えば９０度回転させて引っ掛け部２５と係止溝部２６が係止可能となる位置にした後、ボート４を更に下降させて保温筒１９上に載置すればよい。こうして保温筒１９上へのボート４の載置が完了したら、蓋体１７の上昇によりボート４を熱処理炉５内に搬入して熱処理を開始すればよい。そして、この熱処理中に、上記第２載置台２２ｂ上のボート４がボート搬送機構２３により第１載置台２２ａ上に搬送され、この第１載置台２２ａ上において、移載機構２４による当該ボート４から移載ステージ１２上のキャリア３への熱処理後ウエハの払い出し作業と、移載ステージ１２上のキャリア３からボート４への熱処理前ウエハの搭載作業とが行われ、スループットの向上が図れる。   On the other hand, the boat 4 on the first mounting table 22a is also positioned by the positioning mechanism 38, and the boat 4 is prevented from being overturned by the bowl-like overturn restricting portion 38c. The boat 4 on the first mounting table 22a is supported by the second arm 23b of the boat transport mechanism 23 and is transported above the heat retaining cylinder 19 of the lid body 17 after the regulation by the fall regulation part 38c is released. The Then, the boat 4 is lowered onto the heat retaining cylinder 19 by the boat transport mechanism 23, and immediately before the boat 4 is placed on the heat retaining cylinder 19, the heat retaining cylinder 19 is rotated by a predetermined angle, for example, 90 degrees by the rotation mechanism 20 to engage with the hook portion 25. After the stop groove portion 26 is brought into a position where it can be locked, the boat 4 may be further lowered and placed on the heat retaining cylinder 19. When the boat 4 is thus placed on the heat retaining cylinder 19, the boat 4 may be carried into the heat treatment furnace 5 by raising the lid 17 and the heat treatment may be started. During this heat treatment, the boat 4 on the second mounting table 22b is transferred onto the first mounting table 22a by the boat transfer mechanism 23, and the boat 4 by the transfer mechanism 24 is transferred on the first mounting table 22a. After the heat treatment from the carrier 3 on the transfer stage 12 to the carrier 3 and the wafer unloading operation from the carrier 3 on the transfer stage 12 to the boat 4 are loaded, the throughput can be improved.

このように、本実施形態の縦型熱処理装置１によれば、上記保温筒１９の上部とボート４の底部に、ボート４をボート搬送機構２３により保温筒１９の直上に位置させた状態で保温筒１９を回転機構２０により所定角度回転させることで互いに係止可能又は解除可能となる引っ掛け部２５と係止溝部２６を設けているため、いわゆるツーボートシステムでありながら地震等の外力による保温筒１９上のボート４の転倒を簡単な構造で防止することができる。   As described above, according to the vertical heat treatment apparatus 1 of this embodiment, the boat 4 is placed on the top of the heat retaining cylinder 19 and the bottom of the boat 4 with the boat transport mechanism 23 positioned directly above the heat retaining cylinder 19. Since the hook portion 25 and the locking groove portion 26 that can be locked or released by rotating the cylinder 19 by a predetermined angle by the rotation mechanism 20 are provided, a heat insulating cylinder by an external force such as an earthquake is provided although it is a so-called two-boat system. It is possible to prevent the boat 4 on 19 from falling over with a simple structure.

この場合、上記ボート４は、環状の底板４ｂを有し、上記保温筒１９は、上記底板４ｂの下面をその周方向に沿って適宜間隔で支持する複数の支柱１９ａを有し、これら支柱１９ａの外側部に係止溝部（溝状の被係止部）２６を設け、上記底板４ｂの下面に上記各係止溝部２６に係止される引っ掛け部（鉤状の係止部）２５を設けているため、簡単な構造で保温筒１９とボート４の間のロックと解除を確実且つ容易に行うことができる。   In this case, the boat 4 has an annular bottom plate 4b, and the heat retaining cylinder 19 has a plurality of support columns 19a that support the lower surface of the bottom plate 4b at appropriate intervals along the circumferential direction thereof. A locking groove portion (groove-like locked portion) 26 is provided on the outer side of the base plate, and a hook portion (a hook-like locking portion) 25 that is locked to each locking groove portion 26 is provided on the lower surface of the bottom plate 4b. Therefore, it is possible to reliably and easily perform locking and releasing between the heat insulating cylinder 19 and the boat 4 with a simple structure.

また、上記回転機構２０は、保温筒１９の回転方向の原点位置を検出するセンサ３４と、このセンサ３４からの検出信号に基いて上記引っ掛け部２５と上記係止溝部２６が係止可能となる位置又は解除可能となる位置に保温筒１９を回転制御するための制御装置３５とを有しているため、保温筒１９とボート４の間のロックと解除を確実且つ容易に行うことができる。   The rotation mechanism 20 can lock the hook 34 and the locking groove 26 based on a detection signal from the sensor 34 that detects the origin position of the heat retaining cylinder 19 in the rotation direction. Since the control device 35 for controlling the rotation of the heat insulating cylinder 19 is provided at the position or the position where the heat insulating cylinder 19 can be released, the lock and release between the heat insulating cylinder 19 and the boat 4 can be reliably and easily performed.

特に、上記ボート搬送機構２３がボート４の転倒を規制する転倒規制部材３７を有し、ボート４の搬送時ないし搬送中にボート４を転倒しないように規制するため、いわゆるツーボートシステムでありながら地震等の外力によるボート搬送機構２３上のボート４の転倒、倒壊を簡単な構造で防止することができる。この場合、ボート搬送機構２３は、上記ボート４の底板４ｂの下面を支持する支持片６０を有し、上記転倒規制部材３７は、上記支持片６０に支持された底板４ｂの上面に隙間を持って対峙する規制片３７ａを有しているため、構造の簡素化及び製造コストの低減が図れる。   In particular, the boat transport mechanism 23 has a toppling regulation member 37 that regulates the overturning of the boat 4 and regulates the boat 4 not to fall during or during the transport of the boat 4. It is possible to prevent the boat 4 on the boat transport mechanism 23 from falling or collapsing due to an external force such as an earthquake with a simple structure. In this case, the boat transport mechanism 23 has a support piece 60 that supports the lower surface of the bottom plate 4 b of the boat 4, and the overturning restricting member 37 has a gap on the upper surface of the bottom plate 4 b supported by the support piece 60. Therefore, the structure can be simplified and the manufacturing cost can be reduced.

また、ボート載置台２２にボート４を転倒しないように把持するボート把持機構４１を設け、ボート載置台２２に搬送されたボート４を転倒しないように把持するため、いわゆるツーボートシステムでありながら地震等の外力によるボート載置台２２上のボート４の転倒を簡単な構造で防止することができる。この場合、ボート載置台２２は、拡縮可能な一対のローラ３８ｂを拡開させることにより、ボート４の環状の底板４ｂの内周に形成された位置決め係合溝４０に上記ローラ３８ｂを係合させてボート４の位置決めを行うボート位置決め機構３８を有し、ボート把持機構４１は、上記ボート位置決め機構３８のローラ３８ｂにその拡開時にボート４の底板４ｂの上面に対峙して該底板４ｂをボート載置台２２との間で把持する把持部４１ａを設けているため、ボート４の位置決めと同時に地震等の外力によるボート載置台２２上のボート４の転倒を防止することができ、またボート位置決め機構３８のローラ３８ｂを改良するだけでよく、構造の簡素化及びコストの低減が図れる。以上により、保温筒４上、ボート載置台２２上、及びボート搬送機構２３上のすべての段階でのボート４の転倒、倒壊を防止することができる。   In addition, the boat mounting table 22 is provided with a boat gripping mechanism 41 for gripping the boat 4 so as not to fall, and the boat 4 conveyed to the boat mounting table 22 is gripped so as not to fall down. It is possible to prevent the boat 4 on the boat mounting table 22 from being overturned by an external force such as a simple structure. In this case, the boat mounting table 22 causes the roller 38b to engage with the positioning engagement groove 40 formed on the inner periphery of the annular bottom plate 4b of the boat 4 by expanding the pair of expandable and contractable rollers 38b. A boat positioning mechanism 38 for positioning the boat 4, and the boat gripping mechanism 41 faces the upper surface of the bottom plate 4b of the boat 4 when the roller 38b of the boat positioning mechanism 38 is expanded. Since the grip portion 41a for gripping with the mounting table 22 is provided, the boat 4 on the boat mounting table 22 can be prevented from being overturned by an external force such as an earthquake simultaneously with the positioning of the boat 4, and the boat positioning mechanism. It is only necessary to improve the 38 rollers 38b, and the structure can be simplified and the cost can be reduced. As described above, the boat 4 can be prevented from being overturned or collapsed at any stage on the heat insulating cylinder 4, the boat mounting table 22, and the boat transport mechanism 23.

図１３は保温筒の変形例を示す要部拡大断面図である。図１３の実施形態の保温筒１９においては、支柱１９ａの上端部材１９ｅにボート４の底板４ｂを取付ネジ４１で固定するためのネジ孔４２が設けられている。取付ネジ４１は、底板４ｂのＶ字状の係合溝４０を通って上記ネジ孔４２に捩じ込まれ、取付ネジ４１の頭部４１ａが底板４ｂの上面を締め付けて底板４ｂを支柱１９ａ上に固定するようになっている。この保温筒１９によれば、保温筒１９とボート４を取付ネジ４１で固定することによりワンボートシステムに利用することができ、取付ネジ４１を取外せばツーボートシステムにも利用することができる。   FIG. 13 is an enlarged cross-sectional view of a main part showing a modified example of the heat insulating cylinder. In the heat retaining cylinder 19 of the embodiment of FIG. 13, a screw hole 42 for fixing the bottom plate 4 b of the boat 4 with the mounting screw 41 is provided in the upper end member 19 e of the column 19 a. The mounting screw 41 passes through the V-shaped engagement groove 40 of the bottom plate 4b and is screwed into the screw hole 42. The head 41a of the mounting screw 41 tightens the upper surface of the bottom plate 4b so that the bottom plate 4b is placed on the column 19a. It is supposed to be fixed to. According to the heat insulating cylinder 19, the heat insulating cylinder 19 and the boat 4 can be used for a one-boat system by fixing them with the mounting screws 41, and can be used for a two-boat system by removing the mounting screws 41. .

図１６はボート搬送機構のボート転倒規制部材の他の例を示す側面図である。図１６の実施形態では、上記ボート搬送機構２３は、上記ボート４の底板４ｂの下面を支持する支持片６０を有し、上記転倒規制部材３７は、上記支持片６０に支持された底板４ｂの上面に隙間を持って対峙する規制片３７ａと、該規制片３７ａを側方から突没させる駆動部６２とを有している。駆動部６２としては、例えばエアシリンダが適用可能である。規制片３７ａが使用時に基部側から先端方向へ突出し、不使用時に没入する（元に戻る、引っ込む）ため、ボート４の受け取り受け渡し時に規制片３７ａがボート４と干渉して邪魔になることはない。本実施形態によっても、前実施形態と同様の効果が得られる。   FIG. 16 is a side view showing another example of the boat overturning restriction member of the boat conveyance mechanism. In the embodiment of FIG. 16, the boat transport mechanism 23 has a support piece 60 that supports the lower surface of the bottom plate 4 b of the boat 4, and the overturning restricting member 37 is formed on the bottom plate 4 b supported by the support piece 60. It has the regulation piece 37a which opposes with a clearance gap on the upper surface, and the drive part 62 which makes this regulation piece 37a protrude and sunk from the side. For example, an air cylinder is applicable as the drive unit 62. Since the regulation piece 37a protrudes from the base side toward the distal end when in use and is sunk (returns to the original, retracts) when not in use, the regulation piece 37a does not interfere with the boat 4 when receiving and delivering the boat 4. . According to the present embodiment, the same effect as that of the previous embodiment can be obtained.

図１７、図１８はボート搬送機構のボート転倒規制部材の他の例をそれぞれ示す側面図である。先ず、図１７の実施形態では、上記ボート搬送機構２３は、上記ボート４の底板４ｂの下面を支持する支持片６０を有し、上記転倒規制部材３７は、上記支持片６０の後方から立ち上がって設けられボート４の天板４ａを押える天板押え部６３を有している。この場合、天板押え部６３は、第２アーム２３ｂの基部の上面に立設された支柱６３ａと、天板４ａに設けられ上記支柱６３ａの先端部が下方から挿通される孔部６３ｂとからなっている。この孔部６３ｂを設けるために、天板４ａには水平方向に張り出した張り出し部６３ｃが形成され、この張り出し部６３ｃに孔部６３ｂが垂直に形成されている。孔部６３ｂは、支柱６３ａを挿通し易いよう大きめに形成されていることが好ましい。本実施形態によれば、ボート４を支持片６０で支持する際に上記支柱６３ａを上記天板４ａの孔部６３ｂに下方から挿通させればよく、これによりボート４の転倒を防止することができる。   17 and 18 are side views showing other examples of the boat overturning restricting member of the boat transport mechanism. First, in the embodiment of FIG. 17, the boat transport mechanism 23 has a support piece 60 that supports the lower surface of the bottom plate 4 b of the boat 4, and the overturning restricting member 37 rises from the rear of the support piece 60. A top plate pressing portion 63 that is provided and presses the top plate 4 a of the boat 4 is provided. In this case, the top plate pressing portion 63 includes a support column 63a erected on the upper surface of the base portion of the second arm 23b, and a hole portion 63b provided on the top plate 4a and through which the tip end portion of the support column 63a is inserted from below. It has become. In order to provide the hole 63b, the top plate 4a is formed with a projecting portion 63c projecting in the horizontal direction, and the hole 63b is vertically formed in the projecting portion 63c. The hole 63b is preferably formed to be large so that the column 63a can be easily inserted. According to the present embodiment, when the boat 4 is supported by the support piece 60, the column 63a may be inserted into the hole 63b of the top plate 4a from below, thereby preventing the boat 4 from toppling over. it can.

図１８の実施形態では、天板押え部６３は、第２アーム２３ｂの基部の上面に立設された支柱６３ａと、該支柱６３ａの上端部に設けられ上記ボート４の天板４ａの上面と所定の隙間を存して対峙する上部規制片６３ｄとからなっている。この上部規制片６３ｄは、支柱６３ａの上端部から天板４ａ上に向って水平に延出されている。本実施形態によれば、ボート４を支持片６０で支持する際に上記支柱６３ａ上端の上部規制片６３ｄを上記天板４ａの上面に対峙させればよく、これによりボート４の転倒を防止することができる。   In the embodiment of FIG. 18, the top plate holding portion 63 includes a column 63 a erected on the upper surface of the base portion of the second arm 23 b, and an upper surface of the top plate 4 a of the boat 4 provided on the upper end portion of the column 63 a. The upper restricting piece 63d faces each other with a predetermined gap. The upper restricting piece 63d extends horizontally from the upper end of the column 63a toward the top plate 4a. According to the present embodiment, when the boat 4 is supported by the support piece 60, the upper regulating piece 63d at the upper end of the column 63a may be opposed to the upper surface of the top plate 4a, thereby preventing the boat 4 from overturning. be able to.

図１９〜図２３はボート搬送機構のボート転倒規制部材の他の例を示す側面図である。前記実施形態と同一部分は同一参照符号を付して説明を省略する。図１９の実施の形態では、ボート４は、底板４ｂと天板４ａの間にウエハｗを多段に保持するための支柱４ｃを設けて成り、ボート搬送機構２３は、上記ボート４の底板４ｂの下面を支持する支持部（第２支持アーム）２３ｂを有している。上記ボート４の底板４ｂの上面には規制溝６５が形成され、上記転倒規制部材３７は、上記規制溝６５に対して微少な隙間を持って対峙する規制バー（規制片と同じ）３７ａを有している。規制バー３７ａは薄板状であり、左右一対設けられているが、平面Ｕ字状に形成されていてもよい。上記規制溝６５は規制バー３７ａに対応して左右一対の平行な溝状に形成されている。規制溝６５の側面と規制バー３７ａの側面との間にも微少な隙間が設けられている。本実施形態によれば、地震でボート４が揺れた場合、規制バー３７ａの側面に上記規制溝６５の側面が引っ掛かり、規制バー３７ａの下面に上記規制溝６５の底面が引っ掛かり、ボート４の転倒を防止することができる。   19 to 23 are side views showing other examples of the boat overturning restriction member of the boat conveyance mechanism. The same parts as those in the above embodiment are given the same reference numerals and the description thereof is omitted. In the embodiment of FIG. 19, the boat 4 is provided with a support 4 c for holding the wafer w in multiple stages between the bottom plate 4 b and the top plate 4 a, and the boat transfer mechanism 23 is provided on the bottom plate 4 b of the boat 4. It has a support portion (second support arm) 23b that supports the lower surface. A regulation groove 65 is formed on the upper surface of the bottom plate 4 b of the boat 4, and the tipping regulation member 37 has a regulation bar (same as the regulation piece) 37 a that faces the regulation groove 65 with a slight gap. is doing. The restriction bar 37a is a thin plate and is provided in a pair of left and right, but may be formed in a plane U shape. The restriction groove 65 is formed in a pair of left and right parallel grooves corresponding to the restriction bar 37a. A minute gap is also provided between the side surface of the restriction groove 65 and the side surface of the restriction bar 37a. According to the present embodiment, when the boat 4 is shaken by an earthquake, the side surface of the restriction groove 65 is caught on the side surface of the restriction bar 37a, the bottom surface of the restriction groove 65 is caught on the lower surface of the restriction bar 37a, and the boat 4 falls. Can be prevented.

図２０の実施の形態では、ボートの底板４ｂの両側には平行な横穴６６が形成され、上記転倒規制部材３７は、上記横穴６６に挿入される規制バー３７ａを有している。横穴６６は、薄板状の規制バー３７ａが緩く挿入可能な断面矩形に形成されており、横穴６６の内壁と規制バー３７ａとの間には微少な隙間が設けられている。本実施形態によれば、地震でボート４が揺れた場合、規制バー３７ａに上記横穴６６の内壁が引っ掛かり、ボート４の転倒を防止することができる。   In the embodiment of FIG. 20, parallel lateral holes 66 are formed on both sides of the bottom plate 4 b of the boat, and the overturning restricting member 37 has a restricting bar 37 a inserted into the lateral hole 66. The lateral hole 66 is formed in a rectangular cross-section into which a thin plate-like regulation bar 37a can be loosely inserted, and a minute gap is provided between the inner wall of the lateral hole 66 and the regulation bar 37a. According to the present embodiment, when the boat 4 is shaken by an earthquake, the inner wall of the horizontal hole 66 is caught by the restriction bar 37a, and the boat 4 can be prevented from falling.

図２１の実施の形態では、ボートの底板４ｂの両側には平行な側溝６７が形成され、上記転倒規制部材３７は、上記側溝６７に挿入される規制バー３７ａを有している。側溝６７は、薄板状の規制バー３７ａが緩く挿入可能な断面コ字状に形成されており、側溝６７の内壁と規制バー３７ａとの間には微少な隙間が設けられている。本実施形態によれば、地震でボート４が揺れた場合、規制バー３７ａに上記側溝６７の内壁が引っ掛かり、ボート４の転倒を防止することができる。   In the embodiment of FIG. 21, parallel side grooves 67 are formed on both sides of the bottom plate 4 b of the boat, and the overturning restriction member 37 has a restriction bar 37 a inserted into the side groove 67. The side groove 67 is formed in a U-shaped cross-section into which a thin plate-like regulation bar 37a can be loosely inserted, and a minute gap is provided between the inner wall of the side groove 67 and the regulation bar 37a. According to the present embodiment, when the boat 4 is shaken by an earthquake, the inner wall of the side groove 67 is caught on the regulation bar 37a, and the boat 4 can be prevented from falling.

図２２の実施の形態では、ボート４の底板４ｂには縦穴６８が形成され、上記転倒規制部材３７は、ハンド（支持部）２３ｂの上面に突設され上記縦穴６８に微少隙間を有して嵌合される規制突起部７０からなっている。上記縦穴６８は、横断面円形に形成されており、ボート４の底板４ｂの左右２箇所に設けられていることが好ましい。また、図示例の縦穴６８は、貫通穴であるが、底板４ｂの上面を貫通していないザグリ穴であってもよい。上記規制突起部７０は円柱状に形成されている。本実施形態によれば、地震でボート４が揺れた場合、ハンド２３ｂ上に起立した規制突起部７０の側面にボート４の底板４ｂの縦穴６８の内周壁が引っ掛かり、ボート４の転倒を防止することができる。   In the embodiment of FIG. 22, a vertical hole 68 is formed in the bottom plate 4b of the boat 4, and the overturning restricting member 37 protrudes from the upper surface of the hand (supporting portion) 23b and has a slight gap in the vertical hole 68. It consists of a restriction projection 70 to be fitted. The vertical holes 68 are formed in a circular cross section, and are preferably provided at two locations on the left and right sides of the bottom plate 4 b of the boat 4. Moreover, although the vertical hole 68 in the illustrated example is a through hole, it may be a counterbore hole that does not penetrate the upper surface of the bottom plate 4b. The restricting protrusion 70 is formed in a cylindrical shape. According to the present embodiment, when the boat 4 is shaken due to an earthquake, the inner peripheral wall of the vertical hole 68 of the bottom plate 4b of the boat 4 is caught on the side surface of the regulating projection 70 that stands on the hand 23b, thereby preventing the boat 4 from falling. be able to.

図２３の実施の形態では、上記ボート４の底板４ｂがリング状に形成されており、上記転倒規制部材３７は、上記支持部２３ｂの上面に突設され上記リング状の底板４ｂの内周壁４ｅに微少隙間を有して対峙する複数例えば３つの規制突起部７１からなっている。規制突起部７１は円柱状に形成されており、周方向に略等間隔で配設されている。本実施形態によれば、地震でボート４が揺れた場合、ハンド２３ｂ上に起立した複数の規制突起部７１の側面にボート４の底板４ｂの内周壁４ｅが引っ掛かり、ボート４の転倒を防止することができる。   In the embodiment of FIG. 23, the bottom plate 4b of the boat 4 is formed in a ring shape, and the overturning restricting member 37 projects from the upper surface of the support portion 23b, and the inner peripheral wall 4e of the ring-shaped bottom plate 4b. It consists of a plurality of, for example, three restricting projections 71 facing each other with a minute gap. The restricting protrusions 71 are formed in a cylindrical shape and are arranged at substantially equal intervals in the circumferential direction. According to the present embodiment, when the boat 4 is shaken by an earthquake, the inner peripheral wall 4e of the bottom plate 4b of the boat 4 is caught on the side surfaces of the plurality of restricting protrusions 71 standing on the hand 23b, thereby preventing the boat 4 from falling. be able to.

以上、本発明の実施の形態を図面により詳述してきたが、本発明は上記実施の形態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。   Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above-described embodiments, and various design changes and the like can be made without departing from the gist of the present invention. is there.

本発明の実施の形態に係る縦型熱処理装置を概略的に示す縦断面図である。1 is a longitudinal sectional view schematically showing a vertical heat treatment apparatus according to an embodiment of the present invention. 同縦型熱処理装置のローディングエリア内の構成を概略的に示す平面図である。It is a top view which shows roughly the structure in the loading area of the same vertical heat processing apparatus. 保温筒上のウエハボートの載置状態を概略的に示す斜視図である。It is a perspective view which shows roughly the mounting state of the wafer boat on a heat insulation cylinder. 搬送機構によりウエハボートを保温筒上に載置する状態を示す斜視図である。It is a perspective view which shows the state which mounts a wafer boat on a heat insulation cylinder with a conveyance mechanism. 係止部と被係止部が係止可能になった状態を示す斜視図である。It is a perspective view which shows the state which the latching | locking part and the to-be-latched part became latchable. 保温筒上にウエハボートが載置されている状態を示す図である。It is a figure which shows the state in which the wafer boat is mounted on the heat insulation cylinder. 保温筒上からウエハボートを搬送する際に所定高さだけ持ち上げた状態を示す図である。It is a figure which shows the state lifted only by predetermined height, when conveying a wafer boat from on a heat insulation cylinder. ウエハボートを所定高さだけ持ち上げた状態で保温筒を回転させて解除可能とした状態を示す斜視図である。It is a perspective view which shows the state which rotated the heat insulation cylinder in the state which lifted only the wafer boat by predetermined height, and made it possible to cancel | release. 保温筒上からウエハボートを更に所定高さだけ持ち上げてから側方へ搬送する状態を示す図である。It is a figure which shows the state which lifts a wafer boat only predetermined height from the heat insulation pipe | tube, and is conveyed to a side. 保温筒の回転機構を概略的に示す図である。It is a figure which shows roughly the rotation mechanism of a thermal insulation cylinder. ボート載置台上におけるウエハボートの位置決め機構を概略的に示す平面図である。It is a top view which shows roughly the positioning mechanism of the wafer boat on a boat mounting base. 図１１のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 保温筒の変形例を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the modification of a heat retention cylinder. ボート載置台の一例を示す図で、（ａ）は概略的平面図、（ｂ）は概略的断面図である。It is a figure which shows an example of a boat mounting base, (a) is a schematic plan view, (b) is a schematic sectional drawing. ボート搬送機構のボート転倒規制部材の一例を示す側面図である。It is a side view which shows an example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism. ボート搬送機構のボート転倒規制部材の他の例を示す側面図である。It is a side view which shows the other example of the boat fall control member of a boat conveyance mechanism.

符号の説明Explanation of symbols

ｗ 半導体ウエハ（基板）
１ 縦型熱処理装置
４ ボート（基板保持具）
４ｂ ボートの底板
５ 熱処理炉
５ａ 炉口
１７ 蓋体
１８ 昇降機構
１９ 保温筒
２２ ボート載置台（保持具載置台）
２３ ボート搬送機構（保持具搬送機構）
３７ ボート転倒規制部材（保持具転倒規制部在）
３７ａ 規制片
６２ 駆動部
６３ 天板押え部
６５ 規制溝
６６ 横穴
６７ 側溝
６８ 縦穴
７０ 規制突起部
７１ 規制突起部 w Semiconductor wafer (substrate)
1 Vertical heat treatment equipment 4 Boat (substrate holder)
4b Bottom plate of boat 5 Heat treatment furnace 5a Furnace port 17 Lid 18 Lifting mechanism 19 Insulating cylinder 22 Boat mounting table (holding device mounting table)
23 Boat transport mechanism (holder transport mechanism)
37 Boat fall regulation member (holding tool fall regulation part)
37a Restriction piece 62 Drive part 63 Top plate pressing part 65 Restriction groove 66 Horizontal hole 67 Side groove 68 Vertical hole 70 Restriction projection part 71 Restriction projection part

Claims (18)

熱処理炉と、該熱処理炉の炉口を閉塞する蓋体と、該蓋体上に保温筒を介して載置され多数の基板を多段に保持する基板保持具と、上記蓋体を昇降させて基板保持具を熱処理炉内に搬入・搬出する昇降機構と、上記基板保持具が熱処理炉内にあるときにもう一つの基板保持具を基板の移載のために載置する保持具載置台と、該保持具載置台と上記保温筒との間で基板保持具の搬送を行う保持具搬送機構とを備えた縦型熱処理装置において、上記保持具搬送機構に基板保持具の転倒を規制する転倒規制部材を設けたことを特徴とする縦型熱処理装置。   A heat treatment furnace, a lid that closes the furnace port of the heat treatment furnace, a substrate holder that is placed on the lid via a heat insulating cylinder and holds a number of substrates in multiple stages, and the lid is raised and lowered Elevating mechanism for loading / unloading the substrate holder into / from the heat treatment furnace, and a holder mounting table for mounting another substrate holder for transferring the substrate when the substrate holder is in the heat treatment furnace, In the vertical heat treatment apparatus provided with a holder transporting mechanism for transporting the substrate holder between the holder mounting table and the heat insulating cylinder, the tipping over which the holder transporting mechanism regulates the falling of the substrate holder A vertical heat treatment apparatus provided with a regulating member. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片を有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 2. The vertical heat treatment apparatus according to claim 1, wherein the overturning restricting member has a restricting piece facing the upper surface of the bottom plate supported by the support portion with a gap. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片と、該規制片を側方から突没させる駆動部とを有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The overturning restricting member includes a restricting piece that faces the upper surface of the bottom plate supported by the support part with a gap, and a drive part that projects and retracts the restricting piece from the side. Item 2. The vertical heat treatment apparatus according to Item 1. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部の後方から立ち上がって設けられ基板保持具の天板を押える天板押え部を有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 2. The vertical heat treatment apparatus according to claim 1, wherein the overturning restricting member has a top plate pressing portion that is provided to rise from the rear of the support portion and presses the top plate of the substrate holder. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の上面には規制溝が形成され、上記転倒規制部材は、上記規制溝に対して微少な隙間を持って対峙する規制バーを有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 2. A restriction groove is formed on an upper surface of the bottom plate of the base holder, and the overturning restriction member has a restriction bar that faces the restriction groove with a slight gap. The vertical heat treatment apparatus described. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な横穴が形成され、上記転倒規制部材は、上記横穴に挿入される規制バーを有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The vertical heat treatment apparatus according to claim 1, wherein parallel lateral holes are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restricting bar inserted into the lateral hole. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な側溝が形成され、上記転倒規制部材は、上記側溝に挿入される規制バーを有していることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 2. The vertical heat treatment apparatus according to claim 1, wherein parallel side grooves are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restriction bar inserted into the side groove. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板には縦穴が形成され、上記転倒規制部材は、上記支持部の上面に突設され上記縦穴に微少隙間を有して嵌合される規制突起部からなることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, A vertical hole is formed in the bottom plate of the base holder, and the overturning restricting member includes a restricting protrusion that protrudes from the upper surface of the support and is fitted with a small gap in the vertical hole. The vertical heat treatment apparatus according to claim 1. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板はリング状に形成され、上記転倒規制部材は、上記支持部の上面に突設され上記リング状の底板の内周壁に微少隙間を有して対峙する複数の規制突起部からなることを特徴とする請求項１記載の縦型熱処理装置。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The bottom plate of the base holder is formed in a ring shape, and the overturning restricting member protrudes from a plurality of restricting protrusions that protrude from the upper surface of the support portion and face each other with a minute gap on the inner peripheral wall of the ring-shaped bottom plate. The vertical heat treatment apparatus according to claim 1, wherein 熱処理炉の炉口を閉塞する蓋体上に、多数の基板を多段に保持した基板保持具を保温筒を介して載置し、蓋体を上昇させて基板保持具を熱処理炉内に搬入することにより基板を熱処理し、この熱処理中に保持具載置台上のもう一つの基板保持具に対する基板の移載を行い、熱処理後に熱処理炉から搬出した保温筒上の基板保持具と載置台上の基板保持具とを保持具搬送機構により移替える縦型熱処理方法において、上記保持具搬送機構が転倒規制部材により基板保持具の転倒を規制した状態で基板保持具を搬送することを特徴とする縦型熱処理方法。   A substrate holder holding a number of substrates in multiple stages is placed on a lid that closes the furnace port of the heat treatment furnace through a heat insulating cylinder, and the lid is raised to carry the substrate holder into the heat treatment furnace. The substrate is heat-treated, and the substrate is transferred to another substrate holder on the holder mounting table during the heat treatment. In the vertical heat treatment method for transferring a substrate holder to and from a holder conveyance mechanism, the holder conveyance mechanism conveys the substrate holder in a state in which the fall of the substrate holder is regulated by a fall regulation member. Mold heat treatment method. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片を有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The vertical heat treatment method according to claim 10, wherein the overturning restricting member has a restricting piece that faces the upper surface of the bottom plate supported by the support portion with a gap. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部に支持された底板の上面に隙間を持って対峙する規制片と、該規制片を側方から突没させる駆動部とを有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The overturning restricting member includes a restricting piece that faces the upper surface of the bottom plate supported by the support part with a gap, and a drive part that projects and retracts the restricting piece from the side. Item 10. The vertical heat treatment method according to Item 10. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記転倒規制部材は、上記支持部の後方に立設されて基板保持具の天板を押える天板押え部を有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The vertical heat treatment method according to claim 10, wherein the overturning restricting member has a top plate pressing portion that stands up behind the support portion and presses the top plate of the substrate holder. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の上面には規制溝が形成され、上記転倒規制部材は、上記規制溝に対して微少な隙間を持って対峙する規制バーを有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder includes a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports a lower surface of the bottom plate of the substrate holder, 11. A regulation groove is formed on the upper surface of the bottom plate of the base holder, and the overturning regulation member has a regulation bar that faces the regulation groove with a slight gap. The vertical heat treatment method described. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な横穴が形成され、上記転倒規制部材は、上記横穴に挿入される規制バーを有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 11. The vertical heat treatment method according to claim 10, wherein parallel lateral holes are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restricting bar inserted into the lateral hole. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板の両側には平行な側溝が形成され、上記転倒規制部材は、上記側溝に挿入される規制バーを有していることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, 11. The vertical heat treatment method according to claim 10, wherein parallel side grooves are formed on both sides of the bottom plate of the base holder, and the overturning restricting member has a restricting bar inserted into the side groove. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板には縦穴が形成され、上記転倒規制部材は、上記支持部の上面に突設され上記縦穴に微少隙間を有して嵌合される規制突起部からなることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, A vertical hole is formed in the bottom plate of the base holder, and the overturning restricting member includes a restricting protrusion that protrudes from the upper surface of the support portion and is fitted in the vertical hole with a small gap. The vertical heat treatment method according to claim 10. 上記基板保持具は、底板と天板の間に基板を多段に保持するための支柱を設けて成り、上記保持具搬送機構は、上記基板保持具の底板の下面を支持する支持部を有し、上記基盤保持具の底板はリング状に形成され、上記転倒規制部材は、上記支持部の上面に突設され上記リング状の底板の内周壁に微少隙間を有して対峙する複数の規制突起部からなることを特徴とする請求項１０記載の縦型熱処理方法。   The substrate holder is provided with a support for holding the substrate in multiple stages between the bottom plate and the top plate, and the holder transport mechanism has a support portion that supports the lower surface of the bottom plate of the substrate holder, The bottom plate of the base holder is formed in a ring shape, and the overturning restricting member protrudes from the upper surface of the support portion and includes a plurality of restricting protrusions facing each other with a minute gap on the inner peripheral wall of the ring-shaped bottom plate. The vertical heat treatment method according to claim 10, wherein
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