TWI775328B - Substrate processing apparatus, manufacturing method and program of semiconductor device - Google Patents

Substrate processing apparatus, manufacturing method and program of semiconductor device Download PDF

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TWI775328B
TWI775328B TW110106856A TW110106856A TWI775328B TW I775328 B TWI775328 B TW I775328B TW 110106856 A TW110106856 A TW 110106856A TW 110106856 A TW110106856 A TW 110106856A TW I775328 B TWI775328 B TW I775328B
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processing
substrate
gas
inert gas
holding table
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TW110106856A
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TW202205477A (en
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天野富大
檜山真
高橋哲
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日商國際電氣股份有限公司
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture 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
    • H01L21/18Manufacture 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
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/324Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering

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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

基板處理裝置係具有: 基板保持台,其係可昇降於處理容器的內部; 遮蔽壁,其係包圍上昇後的狀態的基板保持台的上面與相對於該上面的對向面之間的處理空間、及上昇後的狀態的基板保持台的外周; 處理氣體供給口,其係供給含氫氣體的處理氣體至處理空間; 惰性氣體供給口,其係供給惰性氣體至遮蔽壁與處理容器的內壁之間的空間;及 氣體混合部,其係從處理空間出去的處理氣體會與惰性氣體在處理容器的內部被混合。The substrate processing apparatus has: a substrate holding table, which can be lifted and lowered inside the processing container; a shielding wall that surrounds the processing space between the upper surface of the substrate holding table in the raised state and the facing surface with respect to the upper surface, and the outer periphery of the substrate holding table in the raised state; a processing gas supply port, which supplies the processing gas containing hydrogen gas to the processing space; an inert gas supply port for supplying an inert gas to the space between the shielding wall and the inner wall of the processing container; and In the gas mixing section, the processing gas discharged from the processing space and the inert gas are mixed inside the processing container.

Description

基板處理裝置,半導體裝置的製造方法及程式Substrate processing apparatus, manufacturing method and program of semiconductor device

本案是有關基板處理裝置,半導體裝置的製造方法及程式。This case relates to a substrate processing apparatus, a manufacturing method and a program of a semiconductor device.

揭示具有可退火處理基板的處理室的基板處理裝置(參照專利文獻1)。 先前技術文獻 專利文獻A substrate processing apparatus having a processing chamber capable of annealing a substrate is disclosed (refer to Patent Document 1). prior art literature Patent Literature

專利文獻1:特開2019-169663號公報Patent Document 1: Japanese Patent Laid-Open No. 2019-169663

(發明所欲解決的課題)(The problem to be solved by the invention)

在半導體的製造工程中,有在氫氣體氣氛的各種的壓力下對於基板進行氫退火處理的情形。此時,有只使用氫的情況,或使用混合氦、氮、氬及氫的氣體的情況。In a semiconductor manufacturing process, a hydrogen annealing process may be performed on a substrate under various pressures of a hydrogen gas atmosphere. At this time, only hydrogen is used, or a gas in which helium, nitrogen, argon, and hydrogen are mixed is used.

在處理裝置中,一旦可燃氣體、助燃氣體、著火源的條件備齊,則發生著火、燃燒。在微減壓下或大氣壓下進行使用高濃度的氫氣體的處理時,某些的因素,在處理室內的氣體著火時,處理室內的氣體會膨脹而處理室內被加壓。若在減壓下,則容易應付,使在膨脹時不會超越加壓限界值,但為了在微減壓下或大氣壓下處理,需要將處理室全體設為高耐壓規格等充分的安全對策。In the processing device, ignition and combustion occur when the conditions for the combustible gas, the combustion-supporting gas, and the ignition source are satisfied. When the process using high-concentration hydrogen gas is performed under slightly reduced pressure or atmospheric pressure, when the gas in the process chamber catches fire, the gas in the process chamber expands and the process chamber is pressurized. If it is under reduced pressure, it is easy to cope so that the pressure limit value is not exceeded during expansion. However, in order to process under slightly reduced pressure or atmospheric pressure, sufficient safety measures such as setting the entire processing chamber to a high withstand pressure specification are required. .

若縮小處理室的容積,在狹窄的區域對於基板處理,則實施安全對策的範圍會變小,容易應付,但依裝置構成,有用以搬送基板的空間不夠充分、存取困難的情形。If the volume of the processing chamber is reduced and the substrate is processed in a narrow area, the scope of safety measures will be reduced and it is easy to deal with.

本案是以使在微減壓下或大氣壓下對於基板使用高濃度的氫氣體的處理容易為目的。 (用以解決課題的手段)The present invention aims to facilitate the treatment of the substrate using a high-concentration hydrogen gas under slightly reduced pressure or atmospheric pressure. (means to solve the problem)

本案的基板處理裝置,係具有: 基板保持台,其係可昇降於處理容器的內部; 遮蔽壁,其係包圍上昇後的狀態的前述基板保持台的上面與相對於該上面的對向面之間的處理空間、及上昇後的狀態的前述基板保持台的外周; 處理氣體供給口,其係供給含氫氣體的處理氣體至前述處理空間; 惰性氣體供給口,其係供給惰性氣體至前述遮蔽壁與前述處理容器的內壁之間的空間; 氣體混合部,其係從前述處理空間出去的前述處理氣體會在前述處理容器的內部與前述惰性氣體混合;及 處理氣體流路,其係被形成於上昇後的狀態的前述基板保持台的外周面與前述遮蔽壁的內周面之間,被構成為前述處理氣體會從前述處理空間往前述氣體混合部流動。 [發明的效果]The substrate processing apparatus of this case is provided with: a substrate holding table, which can be lifted and lowered inside the processing container; a shielding wall that surrounds the processing space between the upper surface of the substrate holding table in the raised state and the facing surface with respect to the upper surface, and the outer periphery of the substrate holding table in the raised state; a processing gas supply port, which supplies a processing gas containing hydrogen gas to the processing space; an inert gas supply port for supplying an inert gas to the space between the shielding wall and the inner wall of the processing container; a gas mixing unit, wherein the processing gas exiting the processing space is mixed with the inert gas inside the processing container; and The processing gas flow path is formed between the outer peripheral surface of the substrate holding table in the ascended state and the inner peripheral surface of the shielding wall, and is configured such that the processing gas flows from the processing space to the gas mixing portion . [Effect of invention]

若根據本案,則可使在微減壓下或大氣壓下對於基板使用高濃度的氫氣體的處理容易。According to this aspect, it is possible to facilitate the treatment of the substrate using a high-concentration hydrogen gas under slightly reduced pressure or atmospheric pressure.

以下,根據圖面說明有關用以實施本案的形態。在各圖面中,對於相同或等效的構成要素及部分附上相同的參照符號。又,圖面的尺寸比率是基於說明的方便起見被誇張,有與實際的比率不同的情況。又,以圖面的上方向作為上方或上部,以下方向作為下方或下部說明。又,本實施形態中記載的壓力是全部意思氣壓。Hereinafter, the form for implementing the present invention will be described with reference to the drawings. In each drawing, the same reference numerals are attached to the same or equivalent components and parts. In addition, the dimension ratio of a drawing is exaggerated for the convenience of description, and it may differ from an actual ratio. In addition, the upper direction in the drawing is referred to as upper or upper, and the following direction is referred to as lower or lower. In addition, the pressure described in this embodiment means all air pressure.

[第1實施形態] 在圖1、圖2中,本實施形態的基板處理裝置10是進行半導體裝置的製造之一工程。此基板處理裝置10是具有基板保持台12、遮蔽壁14、處理氣體供給口16、惰性氣體供給口18及氣體混合部22。[1st Embodiment] In FIGS. 1 and 2 , the substrate processing apparatus 10 of the present embodiment performs one process of manufacturing a semiconductor device. The substrate processing apparatus 10 includes a substrate holding table 12 , a shielding wall 14 , a processing gas supply port 16 , an inert gas supply port 18 , and a gas mixing unit 22 .

(基板保持台) 基板保持台12是被設在處理容器24的內部亦即處理室,可在該處理容器24內昇降的例如圓板狀的基座。在此,處理容器24是被構成為例如橫剖面為圓形且扁平的密閉容器。又,處理容器24是例如藉由鋁(Al)或不鏽鋼(SUS)等的金屬材料或石英所構成。在處理容器24內是形成搬送基板30的搬送空間26。並且,在處理容器24內是如後述般,在基板保持台12的上昇時,形成處理作為基板30的矽晶圓等的處理空間32。處理容器24是以上部容器24a及下部容器24b所構成。下部容器24b的側面是設有與閘閥34鄰接的基板搬出入口24d。基板30會經由基板搬出入口24d來移送於下部容器24b內的搬送空間26與真空搬送室(未圖示)之間。在下部容器24b的底部是設有複數個昇降銷36。(Substrate Holder) The substrate holding table 12 is, for example, a disc-shaped susceptor that is provided inside the processing container 24 , that is, a processing chamber, and that can be raised and lowered in the processing container 24 . Here, the processing container 24 is, for example, an airtight container whose cross section is circular and flat. In addition, the processing container 24 is made of, for example, a metal material such as aluminum (Al) or stainless steel (SUS), or quartz. Inside the processing container 24 is a conveyance space 26 in which the substrate 30 is conveyed. In addition, as will be described later, a processing space 32 for processing a silicon wafer or the like serving as a substrate 30 is formed in the processing container 24 when the substrate holding table 12 is raised. The processing container 24 is composed of an upper container 24a and a lower container 24b. The side surface of the lower container 24b is provided with the board|substrate carry-out entrance 24d adjacent to the gate valve 34. The substrate 30 is transferred between the transfer space 26 in the lower container 24b and a vacuum transfer chamber (not shown) through the substrate transfer inlet 24d. A plurality of lift pins 36 are provided at the bottom of the lower container 24b.

在基板保持台12的上面38是載置基板30的載置面38a會例如被成凹狀。在載置面38a的徑方向外側是設有不載置基板30的外側上面38b。載置面38a是在基板保持台12的上面38例如被設成凹狀。亦即,基板保持台12的上面38是具有載置面38a與外側上面38b。On the upper surface 38 of the substrate holding table 12, the placement surface 38a on which the substrate 30 is placed is formed, for example, in a concave shape. On the outer side in the radial direction of the mounting surface 38a, an outer upper surface 38b on which the substrate 30 is not mounted is provided. The mounting surface 38 a is formed, for example, in a concave shape on the upper surface 38 of the substrate holding table 12 . That is, the upper surface 38 of the substrate holding table 12 has a mounting surface 38a and an outer upper surface 38b.

將基板30配置於載置面38a時,外側上面38b是被構成為與基板30的上面大略面一致。藉此,外側上面38b是可使往基板30的外周側的處理氣體的供給量接近往基板30的中心側的處理氣體的供給量接近。基板保持台12的外周12b的下部是設有伸出部12c。伸出部12c是比外周12b更凸緣狀地突出至徑方向外側。When the substrate 30 is placed on the placement surface 38 a, the outer upper surface 38 b is configured to roughly match the upper surface of the substrate 30 . Thereby, the supply amount of the processing gas to the outer peripheral side of the substrate 30 can be approximated to the supply amount of the processing gas to the center side of the substrate 30 by the outer upper surface 38b. The lower part of the outer periphery 12b of the board|substrate holding base 12 is provided with the extension part 12c. The projecting portion 12c protrudes radially outward in a more flange-like shape than the outer periphery 12b.

另外,在基板保持台12是亦可設置作為加熱部的第1加熱器41。藉由設置第1加熱器41,可加熱基板30,使被形成於基板30上的膜的品質提升。又,第1加熱器41是被構成連接至溫度控制部40,可控制溫度。溫度控制部40是構成可經由訊號線來對後述的控制器44(圖9)收發溫度資料。In addition, the substrate holding table 12 may be provided with a first heater 41 as a heating unit. By providing the first heater 41 , the substrate 30 can be heated, and the quality of the film formed on the substrate 30 can be improved. Moreover, the 1st heater 41 is connected to the temperature control part 40, and is comprised so that temperature can be controlled. The temperature control unit 40 is configured to transmit and receive temperature data to a controller 44 ( FIG. 9 ) described later through a signal line.

在基板保持台12中,昇降銷36貫通的貫通孔12a會分別設在與昇降銷36對應的位置。又,亦可在基板保持台12設置測定被形成於基板30上的膜的膜厚的膜厚監測器(未圖示)。該情況,膜厚監測器是經由訊號線來連接至膜厚計。在膜厚計產生的膜厚值(膜厚資料)是構成可經由訊號線來對後述的控制器44(圖9)收發訊號。In the substrate holding table 12 , the through holes 12 a through which the lift pins 36 penetrate are provided at positions corresponding to the lift pins 36 , respectively. In addition, a film thickness monitor (not shown) for measuring the film thickness of the film formed on the substrate 30 may be provided on the substrate holding table 12 . In this case, the film thickness monitor is connected to the film thickness gauge via a signal line. The film thickness value (film thickness data) generated by the film thickness meter is configured to transmit and receive signals to the controller 44 ( FIG. 9 ) described later through the signal line.

基板保持台12是例如藉由1根的傳動軸46來支撐。傳動軸46是貫通處理容器24的底部,進一步在處理容器24的外部連接至昇降機構48。藉由使昇降機構48作動而使傳動軸46及基板保持台12昇降,可使被載置於載置面38a上的基板30昇降。另外,傳動軸46的下端部的周圍是藉由波紋管50所覆蓋,處理容器24內是被保持氣密。昇降機構48是被構成可對於後述的控制器44收發基板保持台12的高度資料。The substrate holding table 12 is supported by, for example, one transmission shaft 46 . The transmission shaft 46 penetrates through the bottom of the processing container 24 and is further connected to the lifting mechanism 48 outside the processing container 24 . By operating the elevating mechanism 48 to elevate the transmission shaft 46 and the substrate holding table 12, the substrate 30 placed on the placement surface 38a can be moved up and down. In addition, the circumference of the lower end portion of the transmission shaft 46 is covered with the corrugated tube 50, and the inside of the processing container 24 is kept airtight. The elevating mechanism 48 is configured to transmit and receive height data of the substrate holding table 12 to and from the controller 44 to be described later.

如圖1所示般,在基板30的搬送時,基板保持台12是下降為載置面38a會成為基板搬出入口24d的位置(亦即搬送位置),在基板30的處理時,如圖2所示般,基板30會上昇至處理容器24內的處理位置(亦即處理位置)。As shown in FIG. 1 , when the substrate 30 is transported, the substrate holding table 12 is lowered to a position where the mounting surface 38 a becomes the substrate loading and unloading entrance 24 d (ie, the transport position). As shown, the substrate 30 is raised to the processing position (ie, the processing position) within the processing vessel 24 .

具體而言,當基板保持台12下降至搬送位置時,昇降銷36的上端部從載置面38a突出而從下方頂起基板30,舉起至基板保持台12的上面38具體而言比外側上面38b更高的位置的狀態下支撐基板30。並且,在基板保持台12上昇至處理位置時,昇降銷36會從載置面38a埋沒,載置面38a會從下方支撐基板30。另外,昇降銷36是與基板30直接觸,因此最好例如以石英或礬土等的材質所形成。另外,亦可構成為在昇降銷36設置昇降機構,使基板保持台12與昇降銷36相對地移動。Specifically, when the substrate holding table 12 is lowered to the transfer position, the upper ends of the lift pins 36 protrude from the mounting surface 38 a to lift the substrate 30 from below, and lift up to the upper surface 38 of the substrate holding table 12 , more specifically, than the outer side. The substrate 30 is supported in a state where the upper surface 38b is at a higher position. Furthermore, when the substrate holding table 12 is raised to the processing position, the lift pins 36 are buried from the placement surface 38a, and the placement surface 38a supports the substrate 30 from below. In addition, since the lift pins 36 are in direct contact with the substrate 30, they are preferably formed of a material such as quartz or alumina, for example. In addition, a lift mechanism may be provided on the lift pins 36 to relatively move the substrate holding table 12 and the lift pins 36 .

(遮蔽壁) 在圖2、圖3中,遮蔽壁14是作為包圍上昇後的狀態的基板保持台12的上面38與相對於該上面38的對向面52之間的處理空間32、及上昇後的狀態的基板保持台12的外周12b的部位而設。實際上是在載置面38a載置基板30而處理,因此處理空間32是被形成於被載於載置面38a的基板30的上面與對向於該上面的對向面52之間。(shielding wall) In FIGS. 2 and 3 , the shielding wall 14 surrounds the processing space 32 between the upper surface 38 of the substrate holding table 12 in the raised state and the opposing surface 52 with respect to the upper surface 38 , and the raised state. The substrate holding table 12 is provided at the portion of the outer periphery 12b. Since the substrate 30 is actually placed on the placement surface 38a for processing, the processing space 32 is formed between the upper surface of the substrate 30 placed on the placement surface 38a and the opposing surface 52 facing the upper surface.

遮蔽壁14是例如一體設於後述的淋浴頭54。具體而言,遮蔽壁14是作為從淋浴頭54的徑方向外側端部往下方延伸成圓筒狀的部位而設。在基板保持台12上昇至處理位置的狀態中,包含遮蔽壁14的淋浴頭54是不接觸於基板30及基板保持台12,在被載於載置面38a的基板30的上面與對向於該上面的對向面52之間形成處理空間32。並且,在遮蔽壁14的內周面與基板保持台12的外周12b之間、及遮蔽壁14的下端與基板保持台12的伸出部12c之間是形成有處理氣體流路56。處理氣體流路56是引導被供給至處理空間32的包含氫氣體的處理氣體從該處理空間32出去而與惰性氣體合流的位置為止的流路。換言之,處理氣體流路56是使處理空間32與後述的氣體混合部22之間連通,構成從處理空間32朝向氣體混合部22流動處理氣體的流路。The shielding wall 14 is, for example, integrally provided in the shower head 54 to be described later. Specifically, the shielding wall 14 is provided as a portion extending downward in a cylindrical shape from the radially outer end portion of the shower head 54 . In the state where the substrate holding table 12 is raised to the processing position, the shower head 54 including the shielding wall 14 is not in contact with the substrate 30 and the substrate holding table 12 , and the shower head 54 on the upper surface of the substrate 30 placed on the mounting surface 38 a and facing the The processing space 32 is formed between the upper facing surfaces 52 . Furthermore, processing gas flow paths 56 are formed between the inner peripheral surface of the shielding wall 14 and the outer circumference 12b of the substrate holding table 12 and between the lower end of the shielding wall 14 and the protruding portion 12c of the substrate holding table 12 . The processing gas flow path 56 is a flow path for guiding the processing gas containing the hydrogen gas supplied to the processing space 32 to the position where it exits from the processing space 32 and merges with the inert gas. In other words, the processing gas flow path 56 communicates between the processing space 32 and the gas mixing section 22 described later, and constitutes a flow path through which the processing gas flows from the processing space 32 toward the gas mixing section 22 .

又,基板保持台12是在上昇至處理位置的狀態中,基板保持台12的下端位置會上昇為比遮蔽壁14的下端更低的高度。在本實施形態中,僅伸出部12c的高度方向的寬度(厚度)及遮蔽壁14的下端與伸出部12c之間的處理氣體流路56的寬度的合計的長度,基板保持台12上昇成為基板保持台12的下端位置比遮蔽壁14的下端更低的狀態。藉由將上昇至處理位置的狀態的基板保持台12的下端與遮蔽壁的下端的位置關係設為如此,從處理氣體流路56流出的處理氣體不會滯留於遮蔽壁14的內側,可使與從後述的惰性氣體供給口18供給的惰性氣體的流動直接合流。In addition, when the substrate holding table 12 is raised to the processing position, the lower end position of the substrate holding table 12 is raised to a height lower than the lower end of the shielding wall 14 . In this embodiment, only the total length of the width (thickness) in the height direction of the extension portion 12c and the width of the processing gas flow path 56 between the lower end of the shielding wall 14 and the extension portion 12c raises the substrate holding table 12 The position of the lower end of the substrate holding table 12 is lower than the lower end of the shielding wall 14 . By setting the positional relationship between the lower end of the substrate holding table 12 in the state raised to the processing position and the lower end of the shielding wall, the processing gas flowing out from the processing gas flow path 56 does not stay inside the shielding wall 14, and the It joins directly with the flow of the inert gas supplied from the inert gas supply port 18 described later.

(處理氣體供給口) 在圖1~圖3中,處理氣體供給口16是供給含氫氣體的處理氣體至處理空間32的部位。處理氣體供給口16是連接作為對於處理氣體的流量控制裝置的MFC(Mass Flow Controller)58及作為開閉閥的處理氣體用閥60。藉由MFC58、處理氣體用閥60及處理氣體供給口16來構成處理氣體供給部(處理氣體供給系)。(Processing gas supply port) In FIGS. 1 to 3 , the processing gas supply port 16 is a portion for supplying the processing gas containing hydrogen gas to the processing space 32 . The processing gas supply port 16 is connected to an MFC (Mass Flow Controller) 58 as a flow control device for the processing gas, and a processing gas valve 60 as an on-off valve. A processing gas supply unit (processing gas supply system) is constituted by the MFC 58 , the processing gas valve 60 , and the processing gas supply port 16 .

處理空間32的處理氣體中的氫氣體的濃度為4%以上。本實施形態的處理氣體中的氫氣體的濃度亦可為100%。此情況,從惰性氣體供給口18供給至處理容器24內的惰性氣體的流量是處理氣體的24倍以上。藉此,可將在氣體混合部22的氫氣體的濃度形成未滿4%。The concentration of hydrogen gas in the processing gas in the processing space 32 is 4% or more. The concentration of the hydrogen gas in the process gas of the present embodiment may be 100%. In this case, the flow rate of the inert gas supplied from the inert gas supply port 18 into the processing container 24 is 24 times or more the processing gas. Thereby, the concentration of the hydrogen gas in the gas mixing part 22 can be made to be less than 4%.

藉由將氣體混合部22的氫氣體的濃度設為未滿4%,即使發生氫氣體與氧的混合時,也可防止對氫氣體的著火所造成的急劇的燃燒。換言之,藉由採用本實施形態的裝置構成,即使將被供給至處理空間32的處理氣體中的氫氣體的濃度設為4%以上時,也可防止著火所造成的急劇的燃燒。將被供給至處理空間32的處理氣體中的氫氣體的濃度設為100%時,由於氫氣體的洩漏等所造成的氫氣體與氧的混合發生的可能性更高,因此本實施形態的裝置構成的採用是更合適。另外,若混合部22的氫氣體的濃度為未滿4%,則最好是儘可能低,但稀釋所必要的惰性氣體的供給可能的流量是有實質上的極限,因此設為0.1%以上的範圍為適當。By setting the concentration of hydrogen gas in the gas mixing unit 22 to be less than 4%, even when mixing of hydrogen gas and oxygen occurs, rapid combustion due to ignition of hydrogen gas can be prevented. In other words, by employing the apparatus configuration of this embodiment, even when the concentration of hydrogen gas in the processing gas supplied to the processing space 32 is set to 4% or more, rapid combustion due to ignition can be prevented. When the concentration of hydrogen gas in the processing gas supplied to the processing space 32 is set to 100%, the possibility of mixing of hydrogen gas and oxygen due to leakage of hydrogen gas or the like is more likely to occur. Therefore, the apparatus of this embodiment is The composition of the adoption is more appropriate. In addition, if the concentration of the hydrogen gas in the mixing unit 22 is less than 4%, it is preferably as low as possible, but the flow rate that can be supplied to the inert gas required for dilution is substantially limited, so it is set to 0.1% or more range is appropriate.

處理氣體供給口16是被形成於延伸於上下方向的管狀的支撐軸(淋浴頭)62。支撐軸(淋浴頭)62是貫通處理容器24的頂面24e。The processing gas supply port 16 is formed in a tubular support shaft (shower head) 62 extending in the vertical direction. The support shaft (shower head) 62 penetrates the top surface 24 e of the processing container 24 .

此處理氣體供給口16是藉由被設在對向面52的單數或複數的處理氣體噴出孔54a所構成。具體而言,處理氣體供給口16是藉由淋浴頭54所構成。此淋浴頭54是被設在處理容器24內,被構成可使從處理氣體供給口16供給的處理氣體分散而供給至處理空間32。亦可將淋浴頭54改稱為「氣體分散部」。在淋浴頭54中,相對於基板保持台12的上面38的對向面52是設有複數的處理氣體噴出孔54a。處理氣體噴出孔54a是被配置於對向面52的全體。若將設有處理氣體噴出孔54a的部位稱為多孔板64,則多孔板64的下面為對向面52。The processing gas supply port 16 is constituted by a single or plural number of processing gas ejection holes 54 a provided on the opposing surface 52 . Specifically, the processing gas supply port 16 is constituted by the shower head 54 . The shower head 54 is provided in the processing container 24 , and is configured to disperse the processing gas supplied from the processing gas supply port 16 and supply it to the processing space 32 . The shower head 54 can also be renamed as "gas dispersion part". In the shower head 54, the facing surface 52 with respect to the upper surface 38 of the substrate holding table 12 is provided with a plurality of process gas ejection holes 54a. The processing gas ejection holes 54 a are arranged on the entire facing surface 52 . When the portion where the processing gas ejection holes 54 a are provided is referred to as the perforated plate 64 , the lower surface of the perforated plate 64 is the facing surface 52 .

淋浴頭54是具有:多孔板64、位於多孔板64的上方的蓋66、被夾於多孔板64與蓋66之間的間隔件65、及藉由多孔板64、蓋66及間隔件65所包圍的緩衝空間67。蓋66是設有用以加熱處理氣體的第2加熱器42。又,淋浴頭54是在處理容器24內離開該處理容器24的頂面24e而配置。具體而言,從處理氣體供給口16導入的處理氣體是被供給至淋浴頭54內的緩衝空間67,從該緩衝空間67通過多孔板64的複數的處理氣體噴出孔54a來廣泛分散供給至處理空間32。淋浴頭54的多孔板64是例如以石英、礬土、不鏽鋼、鋁等的材料所構成。The shower head 54 has a perforated plate 64 , a cover 66 located above the perforated plate 64 , a spacer 65 sandwiched between the perforated plate 64 and the cover 66 , and the perforated plate 64 , the cover 66 and the spacer 65 . Enclosed buffer space 67 . The cover 66 is provided with the second heater 42 for heating the process gas. Moreover, the shower head 54 is arrange|positioned away from the ceiling surface 24e of this process container 24 in the process container 24. As shown in FIG. Specifically, the processing gas introduced from the processing gas supply port 16 is supplied to the buffer space 67 in the shower head 54 , and from the buffer space 67 is widely dispersed and supplied to the processing gas through the plurality of processing gas ejection holes 54 a of the perforated plate 64 . Space 32. The porous plate 64 of the shower head 54 is made of, for example, a material such as quartz, alumina, stainless steel, and aluminum.

另外,形成被供給的氣體的流動的氣導(未圖示)亦可設在緩衝空間67。氣導是例如被設在蓋66的下面,其形狀是以處理氣體供給口16開口於緩衝空間67的部位為中心,隨著朝向基板30的下方而擴徑的圓錐形狀。In addition, an air guide (not shown) that forms the flow of the supplied gas may be provided in the buffer space 67 . The air guide is provided, for example, on the lower surface of the cover 66 , and has a conical shape that expands in diameter toward the lower side of the substrate 30 centered on the portion where the processing gas supply port 16 opens into the buffer space 67 .

(惰性氣體供給口) 惰性氣體供給口18是在遮蔽壁14與處理容器24的內壁24c之間的空間供給惰性氣體的部位。惰性氣體是例如可使用氮氣體。惰性氣體供給口18是連接作為對於惰性氣體的流量控制裝置的MFC68及惰性氣體用閥70。藉由MFC68、惰性氣體用閥70及惰性氣體供給口18來構成惰性氣體供給部(惰性氣體供給系)。(Inert gas supply port) The inert gas supply port 18 is a site for supplying an inert gas to the space between the shielding wall 14 and the inner wall 24 c of the processing container 24 . The inert gas is, for example, nitrogen gas which can be used. The inert gas supply port 18 is connected to the MFC 68 and the valve 70 for inert gas, which are flow control devices for the inert gas. An inert gas supply part (inert gas supply system) is constituted by the MFC 68 , the inert gas valve 70 , and the inert gas supply port 18 .

從惰性氣體供給口18供給至處理容器24內的惰性氣體的流量是被調整為氣體混合部22的氫氣體的濃度會成為例如未滿4%。The flow rate of the inert gas supplied from the inert gas supply port 18 into the processing container 24 is adjusted so that the concentration of the hydrogen gas in the gas mixing unit 22 becomes, for example, less than 4%.

惰性氣體供給口18是至少被設在處理容器24的頂面24e的比淋浴頭54的外緣正上方更中央側,作為一例。具體而言,惰性氣體供給口18是在處理容器24的頂面24e的中央部的淋浴頭54的支撐軸(淋浴頭)62的外側與該支撐軸(淋浴頭)62同心狀地設置。換言之,淋浴頭54的支撐軸(淋浴頭)62是***通於惰性氣體供給口18。The inert gas supply port 18 is provided at least on the center side of the ceiling surface 24e of the processing container 24 rather than directly above the outer edge of the shower head 54, as an example. Specifically, the inert gas supply port 18 is provided concentrically with the support shaft (shower head) 62 outside the support shaft (shower head) 62 of the shower head 54 in the central portion of the ceiling surface 24 e of the processing container 24 . In other words, the support shaft (shower head) 62 of the shower head 54 is inserted through the inert gas supply port 18 .

又,惰性氣體供給口18是在處理容器24內的遮蔽壁14的外側且內壁24c的內側,被設在遮蔽壁14的上端14a的位置或比該上端更高的位置。In addition, the inert gas supply port 18 is provided on the outer side of the shielding wall 14 and the inner side of the inner wall 24c in the processing container 24 at the position of the upper end 14a of the shielding wall 14 or a position higher than the upper end.

惰性氣體是被構成為從惰性氣體供給口18供給至淋浴頭54的上面與處理容器24的頂面24e之間,到達遮蔽壁14與處理容器24的內壁24c之間的空間。The inert gas is configured to be supplied from the inert gas supply port 18 to the space between the upper surface of the shower head 54 and the top surface 24e of the processing container 24 to reach the space between the shielding wall 14 and the inner wall 24c of the processing container 24 .

另外,惰性氣體供給口18的配置是不被限於圖1~圖3所示的例子。如圖4所示般,惰性氣體供給口18是亦可例如沿著處理容器24的頂面24e的淋浴頭54的外緣來設置複數個於周方向。此周方向是淋浴頭54的周方向。此複數的惰性氣體供給口18是在周方向均等地設置,或亦可在周方向不均等地設置。In addition, the arrangement|positioning of the inert gas supply port 18 is not limited to the example shown in FIGS. 1-3. As shown in FIG. 4 , a plurality of inert gas supply ports 18 may be provided in the circumferential direction, for example, along the outer edge of the shower head 54 on the ceiling surface 24e of the processing container 24 . This circumferential direction is the circumferential direction of the shower head 54 . The plurality of inert gas supply ports 18 may be provided equally in the circumferential direction, or may be provided unequally in the circumferential direction.

(氣體混合部) 在圖2、圖3中,氣體混合部22是從處理空間32出去的處理氣體會與惰性氣體混合的部位。含氫氣體的處理氣體是藉由與惰性氣體混合而被稀釋。具體而言,遮蔽壁14與處理容器24的內壁24c之間的空間是從惰性氣體供給口18供給的惰性氣體會從上方朝向下方流動。處理氣體是從處理空間32出去而穿過遮蔽壁14與基板保持台12之間的處理氣體流路56時,與惰性氣體合流,與該惰性氣體混合。亦即,處理容器24的內部之中,從處理氣體與惰性氣體的合流部,下方的空間會成為氣體混合部22。(Gas Mixing Section) In FIGS. 2 and 3 , the gas mixing unit 22 is a portion where the processing gas exiting the processing space 32 is mixed with the inert gas. The hydrogen-containing process gas is diluted by mixing with an inert gas. Specifically, in the space between the shielding wall 14 and the inner wall 24c of the processing container 24, the inert gas supplied from the inert gas supply port 18 flows from above to below. When the processing gas exits the processing space 32 and passes through the processing gas flow path 56 between the shielding wall 14 and the substrate holding table 12 , it merges with the inert gas and is mixed with the inert gas. That is, in the inside of the processing container 24 , the space below from the junction of the processing gas and the inert gas becomes the gas mixing part 22 .

(排氣部) 本案的基板處理裝置10是更具有排氣部(排氣系)。此排氣部是例如設在下部容器24b。具體而言,在下部容器24b的內壁24c設有用以將處理容器24的氣氛排氣的排氣口74。從處理容器24的外側對於排氣口74連接排氣管76的上游端。在排氣管76中,例如從上游側依序設有作為壓力調整器(壓力調整部)的APC(Auto Pressure Controller)78、作為開閉閥的排氣閥80、作為真空排氣裝置的真空泵82。藉由排氣口74、排氣管76、APC78及排氣閥80來構成排氣部。又,排氣部是亦可更含有真空泵82。(exhaust part) The substrate processing apparatus 10 of the present invention further includes an exhaust unit (exhaust system). This exhaust part is provided in the lower container 24b, for example. Specifically, the inner wall 24c of the lower container 24b is provided with an exhaust port 74 for exhausting the atmosphere of the processing container 24 . The upstream end of the exhaust pipe 76 is connected to the exhaust port 74 from the outside of the processing container 24 . In the exhaust pipe 76, for example, an APC (Auto Pressure Controller) 78 as a pressure regulator (pressure regulator), an exhaust valve 80 as an on-off valve, and a vacuum pump 82 as a vacuum exhaust device are provided in this order from the upstream side. . The exhaust port 74 , the exhaust pipe 76 , the APC 78 , and the exhaust valve 80 constitute the exhaust portion. In addition, the exhaust part may further include the vacuum pump 82 .

藉由控制此排氣部的APC78及處理氣體供給部的MFC58,處理空間32的壓力是被調整成為大氣壓或相對於大氣壓微減壓。微減壓的範圍是例如「220Torr以上,未滿大氣壓」。這是在燃燒上限濃度(75%)的氫氣體發生燃燒下急劇地體積膨脹時,處理空間32內的壓力有超過大氣壓的可能性的範圍。亦即,在如此的壓力範圍,本實施形態的裝置構成為了確保安全性有用。又,微減壓的範圍是例如亦可設為「300Torr以上,未滿大氣壓」。這是藉由對於被形成於基板上的金屬膜或金屬配線的氫退火處理,可取得實用性的效果的範圍。另外,亦可因應所需,將處理空間32的壓力設為比大氣壓更大。By controlling the APC 78 of the exhaust part and the MFC 58 of the process gas supply part, the pressure of the process space 32 is adjusted to atmospheric pressure or slightly reduced relative to the atmospheric pressure. The range of the slight pressure reduction is, for example, "220 Torr or more, less than atmospheric pressure". This is a range in which the pressure in the processing space 32 may exceed the atmospheric pressure when the hydrogen gas with the combustion upper limit concentration (75%) is combusted and rapidly expands in volume. That is, in such a pressure range, the apparatus structure of this embodiment is useful in order to ensure safety. In addition, the range of the slight pressure reduction may be, for example, "300 Torr or more and less than atmospheric pressure". This is a range in which practical effects can be obtained by the hydrogen annealing treatment of the metal film or metal wiring formed on the substrate. In addition, the pressure of the processing space 32 may be set to be higher than the atmospheric pressure as required.

(控制部) 本案的基板處理裝置10是如圖5所示般,具有作為控制部的控制器44。控制器44是被構成為經由未圖示的訊號線來分別控制閘閥34、昇降機構48、APC78、真空泵82、第1加熱器41、第2加熱器42、處理氣體用閥60、惰性氣體用閥70及排氣閥80。又,在圖5中雖省略,但實際控制器44是被構成為針對圖1所示的MFC58、處理氣體用閥60、MFC68及惰性氣體用閥70也分別控制。(control unit) As shown in FIG. 5 , the substrate processing apparatus 10 of the present invention has a controller 44 as a control unit. The controller 44 is configured to control the gate valve 34 , the lift mechanism 48 , the APC 78 , the vacuum pump 82 , the first heater 41 , the second heater 42 , the process gas valve 60 , the inert gas valve 70 and exhaust valve 80 . In addition, although omitted in FIG. 5 , the actual controller 44 is configured to control the MFC 58 , the process gas valve 60 , the MFC 68 , and the inert gas valve 70 shown in FIG. 1 , respectively.

如圖5所示般,控制部(控制手段)的控制器44是被構成為具備CPU(Central Processing Unit)84a、RAM(Random Access Memory)84b、記憶裝置84c、I/O埠84d的電腦。RAM84b、記憶裝置84c、I/O埠84d是被構成為可經由內部匯流排84e來與CPU84a交換資料。控制器44是連接被構成為例如觸控面板或顯示器等的輸出入裝置86。As shown in FIG. 5, the controller 44 of the control unit (control means) is a computer including a CPU (Central Processing Unit) 84a, a RAM (Random Access Memory) 84b, a memory device 84c, and an I/O port 84d. The RAM 84b, the memory device 84c, and the I/O port 84d are configured to exchange data with the CPU 84a via the internal bus 84e. The controller 44 is connected to an input/output device 86 configured as, for example, a touch panel, a display, or the like.

記憶裝置84c是例如以快閃記憶體、HDD (Hard Disk Drive)等所構成。在記憶裝置84c內是可讀出地儲存有控制基板處理裝置的動作的控制程式或記載後述的基板處理的程序或條件等的程式處方等。製程處方是被組合成可使後述的基板處理工程的各程序實行於控制器44,取得預定的結果者,作為程式機能。以下,亦將此程式處方或控制程式等總簡稱為程式。另外,在本說明書中稱程式時,有只包含程式處方單體時,只包含控制程式單體時,或包含其雙方時。又,RAM84b是被構成為暫時性地保持藉由CPU84a所讀出的程式或資料等的記憶區域(工作區域)。The memory device 84c is constituted by, for example, a flash memory, an HDD (Hard Disk Drive), or the like. In the memory device 84c, a control program for controlling the operation of the substrate processing apparatus, a program prescription for describing the program and conditions of the substrate processing described later, and the like are stored in a readable manner. The process recipe is a program function that is combined so that each program of the substrate processing process described later can be executed in the controller 44 and a predetermined result can be obtained. Hereinafter, this program prescription, control program, etc., are also collectively referred to as programs. In addition, when referring to a program in this specification, there are cases where only the program prescription alone is included, only the control program alone is included, or both are included. In addition, the RAM 84b is a memory area (work area) configured to temporarily hold programs, data, and the like read out by the CPU 84a.

I/O埠84d是被連接至上述的閘閥34、昇降機構48、APC78、真空泵82、第1加熱器41、第2加熱器42、處理氣體用閥60、惰性氣體用閥70、排氣閥80、MFC58、處理氣體用閥60、MFC68及惰性氣體用閥70等。The I/O port 84d is connected to the gate valve 34, the lift mechanism 48, the APC 78, the vacuum pump 82, the first heater 41, the second heater 42, the process gas valve 60, the inert gas valve 70, and the exhaust valve. 80, MFC58, valve 60 for process gas, MFC68, valve 70 for inert gas, etc.

CPU84a是被構成為讀出來自記憶裝置84c的控制程式而實行,且按照來自輸出入裝置86的操作指令的輸入等,從記憶裝置84c讀出製程處方。而且,CPU84a是被構成為按照被讀出的製程處方的內容,經由I/O埠84d及未圖示的訊號線,控制閘閥34的開閉動作、昇降機構48的昇降動作、APC78的開度調整動作、真空泵82的起動及停止、往第1加熱器41及第2加熱器42的供給電力量調整動作(溫度調整動作)、處理氣體用閥60、惰性氣體用閥70、排氣閥80、處理氣體用閥60的開閉動作、MFC58及MFC68的各種氣體的流量調整動作等。The CPU 84a is configured to read out the control program from the memory device 84c and execute it, and reads out the process recipe from the memory device 84c in accordance with the input of an operation command from the I/O device 86 and the like. Furthermore, the CPU 84a is configured to control the opening/closing operation of the gate valve 34, the raising/lowering operation of the elevating mechanism 48, and the opening degree adjustment of the APC 78 via the I/O port 84d and a signal line not shown in accordance with the contents of the read process recipe. Operation, start and stop of vacuum pump 82, power supply adjustment operation (temperature adjustment operation) to first heater 41 and second heater 42, process gas valve 60, inert gas valve 70, exhaust valve 80, The opening and closing operation of the valve 60 for process gas, the flow rate adjustment operation of the various gases of the MFC 58 and the MFC 68, and the like.

控制器44是藉由將被儲存於外部記憶裝置(例如磁帶、軟碟或硬碟等的磁碟、CD或DVD等的光碟、MO等的光磁碟、USB記憶體或記憶卡等的半導體記憶體)88的上述的程式安裝於電腦而構成。記憶裝置84c或外部記憶裝置88是被構成為電腦可讀取的記錄媒體。以下,亦將該等總簡稱為記錄媒體。在本說明書中,稱記錄媒體時,有只包含記憶裝置84c單體時,只包含外部記憶裝置88單體時,或包含其雙方時。另外,用以供給程式至電腦的手段是不限於經由外部記憶裝置88來供給的情況。例如,亦可使用網路90(網際網路或專線)等的通訊手段,不經由外部記憶裝置88來供給程式。The controller 44 is stored in an external memory device (such as a magnetic tape, a magnetic disk such as a floppy disk or a hard disk, an optical disk such as a CD or a DVD, an optical disk such as a MO, a USB memory, a memory card, etc.) The above-mentioned program of the memory) 88 is installed in a computer and constituted. The memory device 84c or the external memory device 88 is a computer-readable recording medium. Hereinafter, these general abbreviations are also referred to as recording media. In this specification, when the recording medium is referred to, it includes only the memory device 84c alone, the external memory device 88 alone, or both. In addition, the means for supplying the program to the computer is not limited to the case of supplying through the external memory device 88 . For example, communication means such as the network 90 (Internet or dedicated line) may be used, and the program may be supplied without the external memory device 88 .

(基板處理工程) 其次,主要利用圖6來說明有關本實施形態的基板處理裝置10及使用半導體裝置的製造方法的基板處理工程。圖6是表示本實施形態的基板處理工程的流程圖。(Substrate processing process) Next, the substrate processing process of the substrate processing apparatus 10 and the manufacturing method using the semiconductor device according to the present embodiment will be mainly described with reference to FIG. 6 . FIG. 6 is a flowchart showing a substrate processing process of the present embodiment.

在本基板處理工程中,對於在基板上所形成的金屬膜或金屬配線,在含有氫氣體氣氛下進行退火處理(氫退火處理)。In this substrate treatment process, an annealing treatment (hydrogen annealing treatment) is performed in a hydrogen-containing gas atmosphere for the metal film or metal wiring formed on the substrate.

本實施形態的半導體裝置的製造方法是具有: 將基板30搬入至基板處理裝置10的處理容器24內的基板搬入工程S110; 對基板30進行氫退火處理的處理工程S200(S120~S140);及 從處理容器24搬出基板30的基板搬出工程S150。 此基板處理工程是例如作為快閃記憶體等的半導體裝置的製造工程之一工程,藉由上述的基板處理裝置10來實施。在以下的說明中,構成基板處理裝置10的各部的動作是藉由圖5所示的控制器44控制。The manufacturing method of the semiconductor device of the present embodiment includes: The substrate loading process S110 of loading the substrate 30 into the processing container 24 of the substrate processing apparatus 10; Process S200 ( S120 - S140 ) of performing hydrogen annealing on the substrate 30 ; and The substrate unloading process S150 of unloading the substrate 30 from the processing container 24 is performed. This substrate processing process is, for example, one process of manufacturing a semiconductor device such as a flash memory, and is performed by the above-described substrate processing apparatus 10 . In the following description, the operation of each part constituting the substrate processing apparatus 10 is controlled by the controller 44 shown in FIG. 5 .

(基板搬入工程S110) 首先,將作為基板30的例如晶圓搬入至處理容器24內。具體而言,昇降機構48會使基板保持台12下降至基板30的搬送位置,使昇降銷36貫通於基板保持台12的貫通孔12a。其結果,昇降銷36會成為比基板保持台12的上面38(具體而言,外側上面38b)僅預定的高度量突出的狀態。(Substrate loading process S110) First, for example, a wafer as the substrate 30 is carried into the processing container 24 . Specifically, the elevating mechanism 48 lowers the substrate holding table 12 to the transfer position of the substrate 30 , and causes the elevating pins 36 to penetrate through the through holes 12 a of the substrate holding table 12 . As a result, the lift pins 36 are in a state of protruding from the upper surface 38 (specifically, the outer upper surface 38 b ) of the substrate holding table 12 by a predetermined height.

接著,開啟閘閥34,從與處理容器24鄰接的真空搬送室往處理容器24內,利用晶圓搬送機構(未圖示),通過基板搬出入口24d來搬入基板30。被搬入的基板30是以水平姿勢來被支撐於從基板保持台12的表面突出的昇降銷36上。一旦將基板30搬入至處理容器24內,則使晶圓搬送機構往處理容器24外退避,關閉閘閥34而將處理容器24內密閉。然後,藉由昇降機構48使基板保持台12上昇,基板30會被載置(支撐)於基板保持台12的上面38(具體而言,載置面38a)。並且,在基板保持台12的上面38與淋浴頭54的對向面52之間形成處理空間32。Next, the gate valve 34 is opened, and the substrate 30 is carried in from the vacuum transfer chamber adjacent to the processing container 24 into the processing container 24 through the substrate carrying-out port 24d by the wafer transfer mechanism (not shown). The loaded substrate 30 is supported by lift pins 36 protruding from the surface of the substrate holding table 12 in a horizontal posture. Once the substrate 30 is loaded into the processing container 24 , the wafer transfer mechanism is retracted to the outside of the processing container 24 , and the gate valve 34 is closed to seal the interior of the processing container 24 . Then, the substrate holding table 12 is raised by the elevating mechanism 48 , and the substrate 30 is placed (supported) on the upper surface 38 (specifically, the mounting surface 38 a ) of the substrate holding table 12 . Furthermore, a processing space 32 is formed between the upper surface 38 of the substrate holding table 12 and the facing surface 52 of the shower head 54 .

(昇溫・真空排氣工程S120) 接著,進行被搬入至處理容器24內的基板30的昇溫。第1加熱器41是預先被加熱,藉由在埋入第1加熱器41的基板保持台12上保持基板30,將基板30加熱至例如150~750℃的範圍內的預定值。在此,基板30的溫度加熱成600℃。又,進行基板30的昇溫的期間,藉由真空泵82,經由排氣管76來將處理容器24內真空排氣,將處理容器24內的壓力設為預定的值。真空泵82是使作動至至少後述的基板搬出工程S150結束為止。(Heating and vacuum exhaust process S120) Next, the temperature rise of the substrate 30 carried into the processing container 24 is performed. The first heater 41 is heated in advance, and the substrate 30 is heated to a predetermined value in the range of, for example, 150 to 750° C. by holding the substrate 30 on the substrate holding table 12 in which the first heater 41 is embedded. Here, the temperature of the substrate 30 is heated to 600°C. In addition, while the temperature of the substrate 30 is being raised, the inside of the processing chamber 24 is evacuated by the vacuum pump 82 through the exhaust pipe 76, and the pressure in the processing chamber 24 is set to a predetermined value. The vacuum pump 82 is actuated until at least the substrate unloading step S150, which will be described later, is completed.

另外,本說明書的「150~750℃」般的數值範圍的記載是意思下限值及上限值含在其範圍中。因此,例如所謂「150~750℃」是意思「150℃以上750℃以下」。有關其他的數值範圍也同樣。In addition, description of the numerical range like "150-750 degreeC" in this specification means that a lower limit and an upper limit are included in the range. Therefore, for example, "150 to 750°C" means "150°C or higher and 750°C or lower". The same applies to other numerical ranges.

(反應氣體供給工程S130) 其次,作為反應氣體,開始含氫的處理氣體的供給、及惰性氣體的供給。具體而言,開啟處理氣體用閥60,邊以MFC58控制流量,邊開始從處理氣體供給口16往處理空間32的處理氣體的供給,且開啟惰性氣體用閥70,邊以MFC68控制流量,邊開始從惰性氣體供給口18往處理容器24內的惰性氣體的供給。處理氣體是藉由淋浴頭54來分散而供給至處理空間32。此時,藉由被設在淋浴頭54的第2加熱器42,處理氣體會被加熱至預定溫度。惰性氣體是從惰性氣體供給口18進入至處理容器24內,通過處理容器24的頂面24e與淋浴頭54的蓋66之間,至淋浴頭54的外緣,通過遮蔽壁14與處理容器24的內壁24c之間,往氣體混合部22流動。(Reaction gas supply process S130) Next, as the reaction gas, the supply of the hydrogen-containing processing gas and the supply of the inert gas are started. Specifically, the process gas valve 60 is opened to start the supply of the process gas from the process gas supply port 16 to the process space 32 while the flow rate is controlled by the MFC 58, and the inert gas valve 70 is opened to control the flow rate by the MFC 68. The supply of the inert gas from the inert gas supply port 18 into the processing container 24 is started. The processing gas is dispersed by the shower head 54 and supplied to the processing space 32 . At this time, the processing gas is heated to a predetermined temperature by the second heater 42 provided in the shower head 54 . The inert gas enters the processing container 24 from the inert gas supply port 18, passes between the top surface 24e of the processing container 24 and the cover 66 of the shower head 54, reaches the outer edge of the shower head 54, passes through the shielding wall 14 and the processing container 24 Between the inner walls 24c of the gas, the gas flows toward the gas mixing part 22 .

此時,亦可將氫氣體的濃度為100%的處理氣體供給至處理空間32。處理空間32的處理氣體中的氫氣體的濃度是例如4%以上。另一方面,從惰性氣體供給口18供給至處理容器24內的惰性氣體的流量是被調整成氣體混合部22的氫氣體的濃度成為未滿4%。此時,藉由調整MFC58及APC78的開度,而控制往處理空間32的處理氣體的供給流量及處理容器24內的排氣,處理空間32的壓力會例如被調整成為大氣壓或相對於大氣壓微減壓(例如300Torr以上,未滿大氣壓)。如此,一面將處理容器24內適度地排氣,一面繼續處理氣體及惰性氣體的供給。At this time, a process gas having a hydrogen gas concentration of 100% may be supplied to the process space 32 . The concentration of hydrogen gas in the processing gas in the processing space 32 is, for example, 4% or more. On the other hand, the flow rate of the inert gas supplied from the inert gas supply port 18 into the processing container 24 is adjusted so that the concentration of the hydrogen gas in the gas mixing unit 22 is less than 4%. At this time, by adjusting the opening degrees of the MFC 58 and the APC 78, the supply flow rate of the processing gas to the processing space 32 and the exhaust gas in the processing container 24 are controlled, and the pressure of the processing space 32 is adjusted to, for example, atmospheric pressure or slightly lower than atmospheric pressure. Reduce pressure (eg, 300 Torr or more, less than atmospheric pressure). In this way, the supply of the processing gas and the inert gas is continued while the inside of the processing container 24 is appropriately exhausted.

基板30的上面是面對處理空間32,基板30上的金屬膜等會藉由含氫氣體的處理氣體來氫退火處理。如圖2、圖3所示般,處理空間32及基板保持台12的外周12b是被一體設於淋浴頭54的遮蔽壁14所包圍。並且,在遮蔽壁14與處理容器24的內壁24c之間是被供給惰性氣體。如圖3所示般,從處理空間32出去的處理氣體是通過遮蔽壁14與基板保持台12之間的處理氣體流路56,穿過該處理氣體流路56時,與惰性氣體合流,與該惰性氣體混合,到達下方的氣體混合部22。The upper surface of the substrate 30 faces the processing space 32 , and the metal film and the like on the substrate 30 are subjected to hydrogen annealing treatment by a processing gas containing hydrogen gas. As shown in FIGS. 2 and 3 , the processing space 32 and the outer periphery 12 b of the substrate holding table 12 are surrounded by the shielding wall 14 provided integrally with the shower head 54 . In addition, an inert gas is supplied between the shielding wall 14 and the inner wall 24c of the processing container 24 . As shown in FIG. 3 , the processing gas exiting from the processing space 32 passes through the processing gas flow path 56 between the shielding wall 14 and the substrate holding table 12 , and when passing through the processing gas flow path 56 , merges with the inert gas and flows with the inert gas. The inert gas is mixed and reaches the gas mixing part 22 below.

如此,在大氣壓或微減壓下的處理空間32中,即使氫氣體的濃度為4%以上,處理空間32的周圍也會以惰性氣體所淨化,不會有氧進入至處理空間32的情形,因此氫氣體的急劇的燃燒會被抑制。同樣,在被設為大氣壓或微減壓下的氣體混合部22,由於處理氣體會藉由惰性氣體所稀釋,氫氣體的濃度成為未滿4%,因此氫氣體的急劇的燃燒會被抑制。又,由於在狹窄的處理空間32進行基板的氫退火處理,因此實施安全對策的範圍會變小,容易應付。因此,可一面確保基板搬送空間(亦即搬送空間26),一面以最小的安全對策,對於微減壓下或大氣壓下的基板進行氫退火處理。In this way, in the processing space 32 under atmospheric pressure or slightly reduced pressure, even if the concentration of hydrogen gas is 4% or more, the surrounding of the processing space 32 will be purified by the inert gas, and oxygen will not enter the processing space 32. Therefore, the rapid combustion of the hydrogen gas is suppressed. Similarly, in the gas mixing section 22 set to atmospheric pressure or slightly reduced pressure, since the processing gas is diluted with the inert gas, the concentration of the hydrogen gas becomes less than 4%, so that the rapid combustion of the hydrogen gas is suppressed. In addition, since the hydrogen annealing process of the substrate is performed in the narrow processing space 32, the range for implementing safety measures becomes small, and it is easy to deal with. Therefore, the hydrogen annealing process can be performed on the substrate under slightly reduced pressure or atmospheric pressure with minimum safety measures while securing the substrate transfer space (ie, the transfer space 26 ).

(真空排氣工程S140) 一旦氫退火處理完了,則停止處理氣體及惰性氣體的供給,經由排氣管76來將處理容器24內真空排氣。藉此,將處理容器24內的處理氣體、惰性氣體及氣體的反應所產生的排氣體等往處理容器24外排氣。然後,調整APC78的開度,將處理容器24內的壓力調整成與處理容器24鄰接的真空搬送室(亦即未圖示的基板30的搬出去處)相同的壓力,例如100Pa。(Vacuum Exhaust Engineering S140) Once the hydrogen annealing process is completed, the supply of the process gas and the inert gas is stopped, and the inside of the process chamber 24 is evacuated through the exhaust pipe 76 . As a result, the processing gas, the inert gas, and the exhaust gas produced by the reaction of the gas and the like in the processing container 24 are exhausted to the outside of the processing container 24 . Then, the opening degree of the APC 78 is adjusted, and the pressure in the processing container 24 is adjusted to the same pressure as that of the vacuum transfer chamber adjacent to the processing container 24 (ie, the unshown substrate 30 unloading place), for example, 100 Pa.

(基板搬出工程S150) 一旦處理容器24內成為預定的壓力,則使基板保持台12下降至基板30的搬送位置,在昇降銷36上支撐基板30。然後,開啟閘閥34,利用晶圓搬送機構,通過基板搬出入口24d,將基板30往處理容器24外搬出。藉由以上,完成本實施形態的基板處理工程。(Substrate unloading process S150) Once the inside of the processing container 24 reaches a predetermined pressure, the substrate holding table 12 is lowered to the transfer position of the substrate 30 , and the substrate 30 is supported on the lift pins 36 . Then, the gate valve 34 is opened, and the wafer transfer mechanism is used to carry out the substrate 30 to the outside of the processing container 24 through the substrate carry-out inlet 24d. With the above, the substrate processing process of the present embodiment is completed.

(程式) 被用在上述的基板處理工程的程式是藉由電腦來使下列程序實行於基板處理裝置10: 將基板30搬入至處理容器24內而載置於基板保持台12上的程序; 對基板30進行氫退火處理的程序; 從處理容器24搬出基板30的程序。(program) The program used in the above-mentioned substrate processing process is to execute the following program in the substrate processing apparatus 10 by a computer: The process of carrying the substrate 30 into the processing container 24 and placing it on the substrate holding table 12; a procedure for performing hydrogen annealing treatment on the substrate 30; A procedure for unloading the substrate 30 from the processing container 24 .

又,若根據本實施形態,則藉由在氫氣體的燃燒發生時限制氫氣體急劇地膨脹的空間,可不用實施將裝置全體高耐壓化或防爆化的對策,減低高耐壓化或防爆化的對策所必要的成本,且容易運用,使裝置的安全性能提升。In addition, according to the present embodiment, by restricting the space where the hydrogen gas rapidly expands when the combustion of the hydrogen gas occurs, it is not necessary to take measures to increase the pressure resistance or explosion protection of the entire device, and it is possible to reduce the pressure resistance increase or explosion protection. The cost necessary for the countermeasures is reduced, and it is easy to use, which improves the safety performance of the device.

又,若根據本實施形態,則可使存在高濃度的氫氣體的處理空間32的容積藉由遮蔽壁12及昇降的基板保持台12來最小化。Furthermore, according to the present embodiment, the volume of the processing space 32 in which the high-concentration hydrogen gas is present can be minimized by the shielding wall 12 and the substrate holding table 12 that is raised and lowered.

又,若根據本實施形態,則藉由在氣體混合部22中迅速地稀釋從處理空間32排出的高濃度的氫氣體而形成未滿燃燒下限濃度(4%)的濃度,可將處理空間32以外的有可能發生急劇的燃燒的區域最小化。Furthermore, according to the present embodiment, by rapidly diluting the high-concentration hydrogen gas discharged from the processing space 32 in the gas mixing unit 22 to a concentration less than the lower combustion limit concentration (4%), the processing space 32 can be Areas other than those where rapid combustion is likely to occur are minimized.

又,若根據本實施形態,則藉由在遮蔽壁12與處理容器24的內壁之間供給惰性氣體,可確實地防止從處理空間32往處理容器24外的氫氣體的洩漏。Moreover, according to this embodiment, by supplying the inert gas between the shielding wall 12 and the inner wall of the processing container 24, leakage of hydrogen gas from the processing space 32 to the outside of the processing container 24 can be reliably prevented.

又,若根據本實施形態,則藉由以惰性氣體淨化淋浴頭54全體的方式構成裝置,即使從淋浴頭54洩漏的氫氣體萬一存在,也可確實地防止往處理容器24外洩漏。又,可抑制往處理空間32內的助燃性氣體的流入。Furthermore, according to the present embodiment, by configuring the apparatus so as to purify the entire shower head 54 with an inert gas, even if hydrogen gas leaking from the shower head 54 exists, leakage to the outside of the processing container 24 can be reliably prevented. In addition, the inflow of the combustion-supporting gas into the processing space 32 can be suppressed.

又,若根據本實施形態,則藉由惰性氣體供給口18設在遮蔽壁14的上端14a的位置或比該上端更高的位置,亦可取得沿著遮蔽壁14的外周而流動的惰性氣體所產生的遮蔽壁14的冷卻效果。Furthermore, according to the present embodiment, by providing the inert gas supply port 18 at the position of the upper end 14a of the shielding wall 14 or at a position higher than the upper end, the inert gas flowing along the outer periphery of the shielding wall 14 can be obtained. The resulting cooling effect of the shielding wall 14 .

(惰性氣體供給口的變形例) 如圖7所示般,亦可藉由設有複數的惰性氣體噴出孔94a的淋浴頭94來構成惰性氣體供給口18。在此構成中,從惰性氣體供給口18導入的惰性氣體是被供給至淋浴頭94內的緩衝空間97,從該緩衝空間97通過複數的惰性氣體噴出孔94a來分散供給至處理容器24內。(Variation of the inert gas supply port) As shown in FIG. 7 , the inert gas supply port 18 may be constituted by the shower head 94 provided with a plurality of inert gas ejection holes 94a. In this configuration, the inert gas introduced from the inert gas supply port 18 is supplied to the buffer space 97 in the shower head 94 , and is distributed and supplied into the processing container 24 from the buffer space 97 through the plurality of inert gas ejection holes 94a.

[第2實施形態] 在圖8~圖10中,本實施形態的基板處理裝置20是遮蔽壁14及惰性氣體供給口18會被設在處理容器24的頂面24e。具體而言,在處理容器24的頂面24e的中央部裝入處理氣體用的淋浴頭54。並且,在頂面24e的淋浴頭54的徑方向外側使用遮蔽壁14。遮蔽壁14是例如被形成圓筒狀,與淋浴頭54是另外被設置。惰性氣體供給口18是被設在遮蔽壁14與處理容器24的內壁24c之間。此惰性氣體供給口18是被構成為例如在周方向複數均等地配置,開口於處理容器24的頂面24e,從遮蔽壁14的上端14a朝向下端,沿著遮蔽壁14供給惰性氣體。[Second Embodiment] In FIGS. 8 to 10 , in the substrate processing apparatus 20 of the present embodiment, the shielding wall 14 and the inert gas supply port 18 are provided on the top surface 24 e of the processing container 24 . Specifically, the shower head 54 for processing gas is installed in the center part of the ceiling surface 24e of the processing container 24. As shown in FIG. Moreover, the shielding wall 14 is used on the radial direction outer side of the shower head 54 of the ceiling surface 24e. The shielding wall 14 is formed in a cylindrical shape, for example, and is provided separately from the shower head 54 . The inert gas supply port 18 is provided between the shielding wall 14 and the inner wall 24 c of the processing container 24 . The inert gas supply ports 18 are, for example, arranged in a plurality of equal numbers in the circumferential direction, open on the ceiling surface 24e of the processing container 24 , and supply the inert gas along the shielding wall 14 from the upper end 14a toward the lower end of the shielding wall 14 .

處理容器24是被區劃成配置基板保持台12的上室100及連接排氣部的下室102。上室100與下室102是以隔壁104來區劃,但隔壁104是形成有使上室100與下室102連通的連通孔104a。The processing container 24 is divided into an upper chamber 100 where the substrate holding table 12 is arranged and a lower chamber 102 connected to an exhaust unit. The upper chamber 100 and the lower chamber 102 are partitioned by a partition wall 104 , and the partition wall 104 is formed with a communication hole 104 a that communicates the upper chamber 100 and the lower chamber 102 .

基板保持台12是例如藉由複數的傳動軸46所支撐。此傳動軸46及基保持台12是藉由昇降機構48的作動而昇降。另外,處理容器24、昇降機構48的構成是亦可與第1實施形態相同。The substrate holding table 12 is supported by, for example, a plurality of transmission shafts 46 . The transmission shaft 46 and the base holding table 12 are moved up and down by the operation of the lift mechanism 48 . In addition, the structure of the processing container 24 and the raising/lowering mechanism 48 may be the same as that of the first embodiment.

在圖8中,本實施形態的基板處理裝置20是在使基板保持台12下降的狀態下將基板30搬入至處理容器24內。被搬入的基板30是以水平姿勢來被支撐於從基板保持台12的表面突出的昇降銷36上。如圖9所示般,藉由昇降機構48使基板保持台12上昇,基板30被支撐於基板保持台12的上面38(具體而言載置面38a)。並且,在基板保持台12的上面38與淋浴頭54的對向面52之間形成處理空間32。而且,處理空間32及基板保持台12的外周12b是被遮蔽壁14包圍。In FIG. 8 , the substrate processing apparatus 20 of the present embodiment carries the substrate 30 into the processing container 24 in a state in which the substrate holding table 12 is lowered. The loaded substrate 30 is supported by lift pins 36 protruding from the surface of the substrate holding table 12 in a horizontal posture. As shown in FIG. 9 , the substrate holding table 12 is raised by the elevating mechanism 48 , and the substrate 30 is supported on the upper surface 38 (specifically, the mounting surface 38 a ) of the substrate holding table 12 . Furthermore, a processing space 32 is formed between the upper surface 38 of the substrate holding table 12 and the facing surface 52 of the shower head 54 . Furthermore, the processing space 32 and the outer periphery 12 b of the substrate holding table 12 are surrounded by the shielding wall 14 .

如圖10所示般,在反應氣體供給工程S130 (圖6)中,處理氣體是藉由被設在處理容器24的頂面24e的淋浴頭54來分散而供給至處理空間32。惰性氣體是從例如位於遮蔽壁14的上端14a的位置或比該上端14a更高的位置的惰性氣體供給口18進入至處理容器24內,從遮蔽壁14的上端朝向下端,沿著遮蔽壁14供給。從處理空間32出去的處理氣體是通過遮蔽壁14與基板保持台12之間的處理氣體流路56,穿過該處理氣體流路56時,與惰性氣體合流,與該惰性氣體混合,到達下方的氣體混合部22。As shown in FIG. 10 , in the reaction gas supply step S130 ( FIG. 6 ), the process gas is dispersed and supplied to the process space 32 by the shower head 54 provided on the ceiling surface 24e of the process container 24 . The inert gas enters the processing container 24 from, for example, the inert gas supply port 18 located at the upper end 14 a of the shielding wall 14 or at a position higher than the upper end 14 a , and extends along the shielding wall 14 from the upper end to the lower end of the shielding wall 14 . supply. The processing gas exiting the processing space 32 passes through the processing gas flow path 56 between the shielding wall 14 and the substrate holding table 12 , and when passing through the processing gas flow path 56 , merges with the inert gas, mixes with the inert gas, and reaches below The gas mixing section 22.

有關其他的部分是與第1實施形態同樣,因此相同或對應的部分是在圖面上附上相同的符號,省略說明。又,有關控制來自處理氣體供給口16的處理氣體的供給、及來自惰性氣體供給口18的惰性氣體的供給的MFC或閥也是圖示省,但可使用與第1實施形態同樣的構造。Since the other parts are the same as those of the first embodiment, the same or corresponding parts are denoted by the same reference numerals in the drawings, and the description thereof will be omitted. In addition, the MFC or valve for controlling the supply of the process gas from the process gas supply port 16 and the supply of the inert gas from the inert gas supply port 18 is not shown, but the same structure as the first embodiment can be used.

[其他的實施形態] 以上、說明有關本案的實施形態之一例,但本案的實施形態是不被限於上述者,當然上述以外,可在不脫離其主旨的範圍內實施各種變形。[other embodiments] As mentioned above, although one example of the embodiment concerning this case was demonstrated, the embodiment of this case is not limited to the above-mentioned one, and it goes without saying that various deformation|transformation can be implemented in the range which does not deviate from the summary.

在基板保持台12上昇至處理位置的狀態下,基板30與對向面52的距離是被控制為例如2cm以下。藉由將此距離設為2cm以下,可將處理空間32的體積限制於可實用性地取得上述的效果的程度。並且,在此狀態下,基板30與對向面52的距離是被控制為例如0.5cm以上。藉由將此距離設為0.5cm以上,可抑制淋浴頭54的下面的溫度分佈的偏倚影響基板30的面內溫度分佈。處理空間32的容量是在基板保持台12的外周12b與遮蔽壁14重疊的範圍,藉由昇降機構48的控制來調整。In a state where the substrate holding table 12 is raised to the processing position, the distance between the substrate 30 and the opposing surface 52 is controlled to be, for example, 2 cm or less. By setting this distance to 2 cm or less, the volume of the processing space 32 can be limited to such an extent that the above-described effects can be obtained practically. In this state, the distance between the substrate 30 and the opposing surface 52 is controlled to be, for example, 0.5 cm or more. By setting this distance to be 0.5 cm or more, it is possible to suppress the deviation of the temperature distribution of the lower surface of the shower head 54 from affecting the in-plane temperature distribution of the substrate 30 . The capacity of the processing space 32 is a range in which the outer periphery 12 b of the substrate holding table 12 overlaps the shielding wall 14 , and is adjusted by the control of the elevating mechanism 48 .

而且,在基板保持台12上昇至處理位置的狀態下,從基板保持台12的外側上面38b到遮蔽壁14的下端的上下方向的長度是例如5cm以上。藉由將此長度設為5cm以上,可防止處理氣體以外的氣體經由處理氣體流路56來流入至處理空間32內。並且,在此狀態下,基板保持台12的外周12b與遮蔽壁14的基板保持台12的徑方向的間隔是例如1cm以下。此間隔是相當於基板保持台12的徑方向剖面的處理氣體流路56的寬度。藉由將此間隔設為1cm以下,可防止處理氣體以外的氣體經由處理氣體流路56來流入至處理空間32內。又,此間隔是0.1cm以上。藉由將此間隔設為0.1cm以上,可確保處理氣體流路56的實用性的傳導(conductance)。The vertical length from the outer top surface 38b of the substrate holding table 12 to the lower end of the shielding wall 14 is, for example, 5 cm or more when the substrate holding table 12 is raised to the processing position. By making this length 5 cm or more, gas other than the processing gas can be prevented from flowing into the processing space 32 through the processing gas flow path 56 . In this state, the distance between the outer periphery 12b of the substrate holding table 12 and the shielding wall 14 in the radial direction of the substrate holding table 12 is, for example, 1 cm or less. This interval corresponds to the width of the processing gas flow path 56 in the cross section in the radial direction of the substrate holding table 12 . By setting this interval to 1 cm or less, gas other than the processing gas can be prevented from flowing into the processing space 32 through the processing gas flow path 56 . In addition, this interval is 0.1 cm or more. By setting this interval to 0.1 cm or more, practical conductance of the processing gas flow path 56 can be ensured.

又,上述是針對一片一片處理基板30的基板處理裝置10,20,但不限於此,亦可為在處理容器24內將基板30複數片排列於水平方向的分批式裝置。The substrate processing apparatuses 10 and 20 described above are for processing the substrates 30 one by one, but the present invention is not limited thereto, and may be a batch type apparatus in which a plurality of substrates 30 are arranged in the horizontal direction in the processing container 24 .

又,上述是針對半導體裝置的製造工程,但實施形態揭示的技術是在半導體裝置的製造工程以外也可適用。例如,有液晶裝置的製造工程、太陽電池的製造工程、發光裝置的製造工程、玻璃基板的處理工程、陶瓷基板的處理工程、導電性基板的處理工程等的基板處理。In addition, the above is the manufacturing process of the semiconductor device, but the technology disclosed in the embodiment is applicable to other than the manufacturing process of the semiconductor device. For example, there are substrate processing such as liquid crystal device manufacturing process, solar cell manufacturing process, light-emitting device manufacturing process, glass substrate processing process, ceramic substrate processing process, and conductive substrate processing process.

10:基板處理裝置 12:基板保持台 12a:貫通孔 12b:外周 12c:伸出部 14:遮蔽壁 14a:上端 16:處理氣體供給口 18:惰性氣體供給口 20:基板處理裝置 22:氣體混合部 24:處理容器 24a:上部容器 24b:下部容器 24c:內壁 24d:基板搬入出口 24e:頂面 26:搬送空間 30:基板 32:處理空間 34:閘閥 36:昇降銷 38:上面 38a:載置面 38b:外側上面 40:溫度控制部 41:第1加熱器 42:第2加熱器 44:控制器 46:傳動軸 48:昇降機構 50:波紋管 52:對向面 54:淋浴頭 54a:處理氣體噴出孔 56:處理氣體流路 58:MFC(Mass Flow Controller) 60:處理氣體用閥 62:支撐軸(淋浴頭) 64:多孔板 65:間隔件 66:蓋 67:緩衝空間 68:MFC 70:惰性氣體用閥 74:排氣口 76:排氣管 78:APC(Auto Pressure Controller) 80:排氣閥 82:真空泵 84a:CPU(Central Processing Unit) 84b:RAM(Random Access Memory) 84c:記憶裝置 84d:I/O埠 84e:內部匯流排 86:輸出入裝置 94:淋浴頭 94a:惰性氣體噴出孔 97:緩衝空間 100:上室 102:下室 104:隔壁 104a:連通孔10: Substrate processing device 12: Substrate holding table 12a: Through hole 12b: Peripheral 12c: Projection 14: Shelter Wall 14a: upper end 16: Process gas supply port 18: Inert gas supply port 20: Substrate processing device 22: Gas mixing section 24: Handling the container 24a: Upper container 24b: Lower container 24c: inner wall 24d: Substrate import and export 24e: top surface 26: Handling space 30: Substrate 32: Processing Space 34: Gate valve 36: Lifting pin 38: Above 38a: Mounting surface 38b: Outside top 40: Temperature Control Department 41: 1st heater 42: 2nd heater 44: Controller 46: Drive shaft 48: Lifting mechanism 50: Bellows 52: Opposite 54: Shower head 54a: Process gas ejection hole 56: Process gas flow path 58: MFC (Mass Flow Controller) 60: Valve for processing gas 62: Support shaft (shower head) 64: Multiwell Plate 65: Spacer 66: Cover 67: Buffer space 68: MFC 70: Valve for inert gas 74: exhaust port 76: Exhaust pipe 78: APC (Auto Pressure Controller) 80: Exhaust valve 82: Vacuum pump 84a: CPU (Central Processing Unit) 84b: RAM (Random Access Memory) 84c: Memory Device 84d: I/O port 84e: Internal busbar 86: Input and output device 94: shower head 94a: Inert gas ejection hole 97: Buffer space 100: Upper Room 102: Lower Room 104: Next Door 104a: Connecting hole

[圖1]是表示在第1實施形態的基板處理裝置中,基板保持台下降的狀態的剖面圖。 [圖2]是表示在第1實施形態的基板處理裝置中,基板保持台上昇後的狀態的剖面圖。 [圖3]是表示在第1實施形態的基板處理裝置中,氫退火處理時的處理氣體與惰性氣體的流動的擴大剖面圖。 [圖4]是表示在第1實施形態的基板處理裝置中,惰性氣體供給口的其他的例子的剖面圖。 [圖5]是基板處理裝置的控制器的概略構成圖。 [圖6]是基板處理工程的流程圖。 [圖7]是表示在第1實施形態的基板處理裝置中,淋浴頭的其他的例子的擴大剖面圖。 [圖8]是表示在第2實施形態的基板處理裝置中,基板保持台下降的狀態的剖面圖。 [圖9]是表示在第2實施形態的基板處理裝置中,基板保持台上昇後的狀態的剖面圖。 [圖10]是表示在第2實施形態的基板處理裝置中,氫退火處理時的處理氣體與惰性氣體的流動的擴大剖面圖。1 is a cross-sectional view showing a state in which a substrate holding table is lowered in the substrate processing apparatus according to the first embodiment. [ Fig. 2] Fig. 2 is a cross-sectional view showing a state in which the substrate holding table is raised in the substrate processing apparatus according to the first embodiment. 3 is an enlarged cross-sectional view showing the flow of the processing gas and the inert gas during the hydrogen annealing treatment in the substrate processing apparatus according to the first embodiment. 4 is a cross-sectional view showing another example of an inert gas supply port in the substrate processing apparatus according to the first embodiment. 5 is a schematic configuration diagram of a controller of the substrate processing apparatus. [ Fig. 6 ] is a flowchart of the substrate processing process. 7 is an enlarged cross-sectional view showing another example of the shower head in the substrate processing apparatus according to the first embodiment. 8 is a cross-sectional view showing a state in which the substrate holding table is lowered in the substrate processing apparatus according to the second embodiment. [ Fig. 9] Fig. 9 is a cross-sectional view showing a state in which the substrate holding table is raised in the substrate processing apparatus according to the second embodiment. 10 is an enlarged cross-sectional view showing the flow of a processing gas and an inert gas during the hydrogen annealing treatment in the substrate processing apparatus according to the second embodiment.

10:基板處理裝置 10: Substrate processing device

12:基板保持台 12: Substrate holding table

12a:貫通孔 12a: Through hole

12b:外周 12b: Peripheral

12c:伸出部 12c: Projection

14:遮蔽壁 14: Shelter Wall

14a:上端 14a: upper end

16:處理氣體供給口 16: Process gas supply port

18:惰性氣體供給口 18: Inert gas supply port

22:氣體混合部 22: Gas mixing section

24:處理容器 24: Handling the container

24a:上部容器 24a: Upper container

24b:下部容器 24b: Lower container

24c:內壁 24c: inner wall

24d:基板搬入出口 24d: Substrate import and export

24e:頂面 24e: top surface

26:搬送空間 26: Handling space

30:基板 30: Substrate

34:閘閥 34: Gate valve

36:昇降銷 36: Lifting pin

38:上面 38: Above

38a:載置面 38a: Mounting surface

38b:外側上面 38b: Outside top

40:溫度控制部 40: Temperature Control Department

41:第1加熱器 41: 1st heater

42:第2加熱器 42: 2nd heater

46:傳動軸 46: Drive shaft

48:昇降機構 48: Lifting mechanism

50:波紋管 50: Bellows

52:對向面 52: Opposite

54:淋浴頭 54: Shower head

54a:處理氣體噴出孔 54a: Process gas ejection hole

58:MFC(Mass Flow Controller) 58: MFC (Mass Flow Controller)

60:處理氣體用閥 60: Valve for processing gas

62:支撐軸(淋浴頭) 62: Support shaft (shower head)

64:多孔板 64: Multiwell Plate

65:間隔件 65: Spacer

66:蓋 66: Cover

67:緩衝空間 67: Buffer space

68:MFC 68: MFC

70:惰性氣體用閥 70: Valve for inert gas

74:排氣口 74: exhaust port

76:排氣管 76: Exhaust pipe

78:APC(Auto Pressure Controller) 78: APC (Auto Pressure Controller)

80:排氣閥 80: Exhaust valve

82:真空泵 82: Vacuum pump

Claims (18)

一種基板處理裝置,其特徵係具有:基板保持台,其係可昇降於處理容器的內部,具有上面及外周側面;遮蔽壁,其係包圍上昇後的狀態的前述基板保持台的前述上面與相對於該上面的對向面之間的處理空間、及以其內周側面會與上昇後的狀態的前述基板保持台的前述外周側面面對之方式,前述內周側面包圍上昇後的狀態的前述基板保持台的前述外周側面;處理氣體供給口,其係供給含氫氣體的處理氣體至前述處理空間;惰性氣體供給口,其係供給惰性氣體至前述遮蔽壁與前述處理容器的內壁之間的空間;氣體混合部,其係從前述處理空間出去的前述處理氣體會與前述惰性氣體在前述處理容器的內部被混合;及處理氣體流路,其係被形成於上昇後的狀態的前述基板保持台的外周側面與前述遮蔽壁的內周側面之間,被構成為前述處理氣體會從前述處理空間往前述氣體混合部流動。 A substrate processing apparatus is characterized by comprising: a substrate holding table, which can be raised and lowered inside a processing container, and has an upper surface and an outer peripheral side surface; The processing space between the facing surfaces of the upper surface and the inner peripheral side surface of the substrate holding table in a raised state may face the outer peripheral side surface of the substrate holding table, and the inner peripheral side surface surrounds the raised state. The outer peripheral side surface of the substrate holder; a processing gas supply port for supplying a processing gas containing hydrogen gas to the processing space; an inert gas supply port for supplying an inert gas between the shielding wall and the inner wall of the processing container a space; a gas mixing part, in which the process gas exiting the process space and the inert gas are mixed inside the process container; and a process gas flow path, which is formed on the substrate in a raised state Between the outer peripheral side surface of the holding table and the inner peripheral side surface of the shielding wall, the processing gas is configured to flow from the processing space to the gas mixing portion. 如請求項1記載的基板處理裝置,其中,前述處理氣體供給口,係藉由被設在前述對向面的單數或複數的處理氣體噴出孔所構成。 The substrate processing apparatus according to claim 1, wherein the processing gas supply port is constituted by a singular or plural number of processing gas ejection holes provided on the opposing surface. 如請求項2記載的基板處理裝置,其中,前述處理氣體供給口,係藉由在前述對向面設有前述複數 的處理氣體噴出孔的淋浴頭所構成,前述淋浴頭,係在前述處理容器內離開該處理容器的頂面而設。 The substrate processing apparatus according to claim 2, wherein the processing gas supply port is provided with the plural number of the processing gas on the opposing surface. The shower head is formed of the processing gas ejection hole, and the shower head is provided in the processing container away from the top surface of the processing container. 如請求項3記載的基板處理裝置,其中,前述惰性氣體,係被構成為從前述惰性氣體供給口供給至前述淋浴頭的上面與前述處理容器的前述頂面之間,到達前述遮蔽壁與前述處理容器的內壁之間的空間。 The substrate processing apparatus according to claim 3, wherein the inert gas is supplied from the inert gas supply port between the upper surface of the shower head and the top surface of the processing container, and is configured to reach the shielding wall and the Treat the space between the inner walls of the container. 如請求項4記載的基板處理裝置,其中,前述惰性氣體供給口,係至少被設在比前述處理容器的前述頂面的前述淋浴頭的外緣更靠中央側。 The substrate processing apparatus according to claim 4, wherein the inert gas supply port is provided at least on the center side of the outer edge of the shower head on the ceiling surface of the processing container. 如請求項3記載的基板處理裝置,其中,前述惰性氣體供給口,係沿著前述處理容器的前述頂面的前述淋浴頭的外緣來複數設於周方向。 The substrate processing apparatus according to claim 3, wherein the inert gas supply ports are provided in plural in the circumferential direction along the outer edge of the shower head on the ceiling surface of the processing container. 如請求項3記載的基板處理裝置,其中,前述遮蔽壁,係被設於前述淋浴頭。 The substrate processing apparatus according to claim 3, wherein the shielding wall is provided on the shower head. 如請求項1記載的基板處理裝置,其中,前述惰性氣體供給口,係被設在前述處理容器內的前述遮蔽壁的外側且前述內壁的內側,前述遮蔽壁的上端的位置或比該上端更高的位置。 The substrate processing apparatus according to claim 1, wherein the inert gas supply port is provided outside the shielding wall and inside the inner wall in the processing container, at a position of an upper end of the shielding wall or a distance higher than the upper end of the shielding wall. higher position. 如請求項8記載的基板處理裝置,其中,前述遮蔽壁及前述惰性氣體供給口,係被設在前述處理容器的頂面。 The substrate processing apparatus according to claim 8, wherein the shielding wall and the inert gas supply port are provided on the top surface of the processing container. 如請求項1記載的基板處理裝置,其中,更具有: 流量控制裝置,其係控制往前述處理氣體供給口供給的前述處理氣體的流量;排氣部,其係被構成為將前述處理容器內的氣氛排氣;及控制部,其係控制前述流量控制裝置及前述排氣部,將前述處理空間的壓力調整為成為大氣壓或相對於大氣壓微減壓。 The substrate processing apparatus according to claim 1, further comprising: a flow control device for controlling the flow rate of the processing gas supplied to the processing gas supply port; an exhaust unit configured to exhaust the atmosphere in the processing container; and a control unit for controlling the flow rate control In the apparatus and the exhaust unit, the pressure of the processing space is adjusted to be at atmospheric pressure or slightly reduced in pressure relative to atmospheric pressure. 如請求項10記載的基板處理裝置,其中,前述處理氣體中的氫氣體的濃度為4%以上。 The substrate processing apparatus according to claim 10, wherein the concentration of the hydrogen gas in the processing gas is 4% or more. 如請求項11記載的基板處理裝置,其中,從前述惰性氣體供給口供給至前述處理容器內的惰性氣體的流量是被調整為前述氣體混合部的氫氣體的濃度成為未滿4%。 The substrate processing apparatus according to claim 11, wherein the flow rate of the inert gas supplied from the inert gas supply port into the processing container is adjusted so that the concentration of the hydrogen gas in the gas mixing section becomes less than 4%. 如請求項11記載的基板處理裝置,其中,處理氣體中的氫氣體的濃度為100%。 The substrate processing apparatus according to claim 11, wherein the concentration of hydrogen gas in the processing gas is 100%. 如請求項1記載的基板處理裝置,其中,更具有:流量控制裝置,其係控制往前述惰性氣體供給口供給的前述惰性氣體的流量;及控制部,其係被構成為控制前述流量控制裝置,將從前述惰性氣體供給口供給的前述惰性氣體的流量調整為成為從前述處理氣體供給口供給的前述處理氣體的流量的24倍以上。 The substrate processing apparatus according to claim 1, further comprising: a flow rate controller for controlling the flow rate of the inert gas supplied to the inert gas supply port; and a control unit configured to control the flow rate controller The flow rate of the inert gas supplied from the inert gas supply port is adjusted to be 24 times or more the flow rate of the processing gas supplied from the processing gas supply port. 如請求項1記載的基板處理裝置,其 中,前述遮蔽壁與前述處理容器的內壁之間的空間,係被構成為與前述氣體混合部連通,從前述惰性氣體供給口供給的前述惰性氣體會朝向前述氣體混合部流動。 The substrate processing apparatus according to claim 1, wherein Among them, the space between the shielding wall and the inner wall of the processing container is configured to communicate with the gas mixing part, and the inert gas supplied from the inert gas supply port flows toward the gas mixing part. 如請求項1記載的基板處理裝置,其中,上昇後的狀態的前述基板保持台的下端位置係比前述遮蔽壁的下端位置更低。 The substrate processing apparatus according to claim 1, wherein the lower end position of the substrate holding table in the raised state is lower than the lower end position of the shielding wall. 一種半導體裝置的製造方法,其特徵為具有:將基板載置於基板處理裝置的基板保持台上之基板搬入工程;對前述基板進行使用處理氣體的處理之處理工程;及從處理容器搬出前述基板之基板搬出工程,該基板處理裝置,係具有:基板保持台,其係可昇降於處理容器的內部,具有上面及外周側面;遮蔽壁,其係包圍上昇後的狀態的前述基板保持台的前述上面與相對於該上面的對向面之間的處理空間、及以其內周側面會與上昇後的狀態的前述基板保持台的前述外周側面面對之方式,前述內周側面包圍上昇後的狀態的前述基板保持台的前述外周側面;處理氣體供給口,其係供給含氫氣體的處理氣體至前述處理空間;惰性氣體供給口,其係供給惰性氣體至前述遮蔽壁與前述處理容器的內壁之間的空間; 氣體混合部,其係從前述處理空間出去的前述處理氣體會與前述惰性氣體在前述處理容器的內部被混合;及處理氣體流路,其係被形成於上昇後的狀態的前述基板保持台的外周側面與前述遮蔽壁的內周側面之間,被構成為前述處理氣體會從前述處理空間往前述氣體混合部流動。 A method of manufacturing a semiconductor device, comprising: a substrate carrying process of placing a substrate on a substrate holding table of a substrate processing apparatus; a processing process of subjecting the substrate to a process using a process gas; and unloading the substrate from a processing container In the substrate unloading process, the substrate processing apparatus includes: a substrate holding table which can be lifted and lowered inside the processing container, and has an upper surface and an outer peripheral side surface; The processing space between the upper surface and the facing surface with respect to the upper surface, and the manner in which the inner peripheral side surface faces the outer peripheral side surface of the substrate holding table in the ascended state, and the inner peripheral side surface surrounds the raised surface. The outer peripheral side surface of the substrate holding table in the state of space between walls; a gas mixing part in which the process gas and the inert gas exiting from the process space are mixed inside the process container; and a process gas flow path formed in the raised state of the substrate holding table Between the outer peripheral side surface and the inner peripheral side surface of the shielding wall, the processing gas is configured to flow from the processing space to the gas mixing portion. 一種程式,係使實行於基板處理裝置的程式,其特徵為:藉由電腦來使下列程序實行於前述基板處理裝置,將基板載置於基板保持台上之程序;對前述基板進行使用處理氣體的處理之程序;及從處理容器搬出前述基板之程序,該基板處理裝置,係具有:基板保持台,其係可昇降於處理容器的內部,具有上面及外周側面;遮蔽壁,其係包圍上昇後的狀態的前述基板保持台的前述上面與相對於該上面的對向面之間的處理空間、及以其內周側面會與上昇後的狀態的前述基板保持台的前述外周側面面對之方式,前述內周側面包圍上昇後的狀態的前述基板保持台的前述外周側面;處理氣體供給口,其係供給含氫氣體的處理氣體至前述處理空間;惰性氣體供給口,其係供給惰性氣體至前述遮蔽壁與前述處理容器的內壁之間的空間; 氣體混合部,其係從前述處理空間出去的前述處理氣體會與前述惰性氣體在前述處理容器的內部被混合;及處理氣體流路,其係被形成於上昇後的狀態的前述基板保持台的外周側面與前述遮蔽壁的內周側面之間,被構成為前述處理氣體會從前述處理空間往前述氣體混合部流動。 A program is a program to be executed in a substrate processing apparatus, characterized in that the following program is executed in the substrate processing apparatus by a computer to place a substrate on a substrate holding table; and a processing gas is used for the substrate. The process of processing; and the process of unloading the substrate from the processing container, the substrate processing apparatus is provided with: a substrate holding table, which can be raised and lowered inside the processing container, and has an upper surface and an outer peripheral side surface; a shielding wall, which is surrounded and raised The processing space between the upper surface of the substrate holding table in the rear state and the facing surface with respect to the upper surface, and the inner peripheral side surface thereof will face the outer peripheral side surface of the substrate holding table in the raised state. The inner peripheral side surface surrounds the outer peripheral side surface of the substrate holding table in a raised state; a processing gas supply port supplies a process gas containing hydrogen gas to the processing space; an inert gas supply port supplies an inert gas to the space between the aforementioned shielding wall and the inner wall of the aforementioned processing container; a gas mixing part in which the process gas and the inert gas exiting from the process space are mixed inside the process container; and a process gas flow path formed in the raised state of the substrate holding table Between the outer peripheral side surface and the inner peripheral side surface of the shielding wall, the processing gas is configured to flow from the processing space to the gas mixing portion.
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