WO2015098596A1 - 基板処理システム - Google Patents
基板処理システム Download PDFInfo
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- WO2015098596A1 WO2015098596A1 PCT/JP2014/083139 JP2014083139W WO2015098596A1 WO 2015098596 A1 WO2015098596 A1 WO 2015098596A1 JP 2014083139 W JP2014083139 W JP 2014083139W WO 2015098596 A1 WO2015098596 A1 WO 2015098596A1
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- exposure
- station
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- wafer
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70991—Connection with other apparatus, e.g. multiple exposure stations, particular arrangement of exposure apparatus and pre-exposure and/or post-exposure apparatus; Shared apparatus, e.g. having shared radiation source, shared mask or workpiece stage, shared base-plate; Utilities, e.g. cable, pipe or wireless arrangements for data, power, fluids or vacuum
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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
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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
- H01L21/67115—Apparatus for thermal treatment mainly by radiation
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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
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67196—Apparatus for manufacturing or treating in a plurality of work-stations characterized by the construction of the transfer chamber
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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
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67207—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process
- H01L21/67225—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process comprising at least one lithography chamber
Definitions
- the present invention relates to a substrate processing system for processing a substrate.
- a resist film is formed as a photosensitive film on a substrate such as a semiconductor wafer (hereinafter referred to as a “wafer”), and then the resist film is subjected to an exposure process and a development process.
- a predetermined resist pattern is formed on the substrate.
- finer resist patterns In order to realize a finer resist pattern, an exposure process using a KrF excimer laser or an ArF excimer laser has already been put into practical use.
- EUV light is weak in energy. There is a limit to increasing the sensitivity of the resist film to compensate for this. For this reason, when EUV exposure is adopted, the time for exposing one irradiation region becomes longer, and as a result, the throughput is lowered and the productivity is lowered. Even in EB exposure using EB (electron beam), it takes time to draw a pattern. Therefore, there is a demand for shortening the exposure time required for drawing the pattern and reducing the total processing time. there were.
- the present invention has been made in view of such a point, and an object of the present invention is to suitably form a fine pattern on a substrate while suppressing a decrease in throughput in a photolithography process.
- the present invention provides a substrate processing system for processing a substrate, a processing station provided with a plurality of processing apparatuses for processing a substrate, and a substrate provided outside the substrate processing system.
- An exposure apparatus that exposes a pattern on the resist film; an interface station that delivers the substrate directly or indirectly between the substrate processing systems; and a resist on the substrate after the pattern exposure is performed.
- a light irradiation device that performs post-exposure with UV light on the film, and a post-exposure station that accommodates the light irradiation device and can be adjusted to a reduced pressure or an inert gas atmosphere. It is directly connected to the exposure apparatus or indirectly through a space that can be adjusted to a reduced pressure or inert gas atmosphere.
- the resist film on the substrate after the pattern exposure is first provided with the light irradiation device that performs the post-exposure with the UV light, for example, the pattern exposure by the low energy exposure.
- energy can be input supplementarily by irradiation with UV light to decompose the acid generator in the resist film to generate an acid or promote the generation of a radical component. Therefore, the irradiation amount of the light source for pattern exposure can be reduced, and the exposure time can be shortened. For example, the exposure time can be shortened compared to performing exposure processing with a light source having low energy alone, and throughput can be reduced. A fine pattern can be formed while suppressing the decrease.
- a light irradiation device that performs post-exposure with UV light on the substrate after pattern exposure is housed in a post-exposure station that can be adjusted to a reduced pressure or an inert gas atmosphere. Since it is directly connected to the exposure apparatus or indirectly through a space that can be adjusted to a reduced pressure or an inert gas atmosphere, acid and radicals from the resist film after pattern exposure are lost. It is possible to suitably perform auxiliary exposure with UV light while suppressing activation.
- a heat treatment apparatus that performs post-exposure heat treatment on the post-exposure substrate is installed in the same atmosphere as the post-exposure station, or the heat treatment space is set in the same atmosphere as the post-exposure station. You may be allowed to.
- the post-exposure heat treatment called so-called PEB may be performed in the same atmosphere as the post-exposure station.
- a substrate processing system for processing a substrate, a processing station provided with a plurality of processing apparatuses for processing a substrate, an exposure apparatus for exposing a pattern to the substrate, and the exposure apparatus
- An interface station that delivers the substrate to and a light irradiation device that performs post-exposure with UV light on the substrate after the exposure of the pattern, and the light irradiation device includes the exposure device It is provided in a section having the same atmosphere as an exposure processing unit that performs pattern exposure processing in the apparatus.
- a fine pattern can be suitably formed on a substrate while suppressing a decrease in throughput in a photolithography process.
- FIG. 1 is an explanatory diagram schematically showing an outline of a configuration of a coating and developing treatment system 1 as a substrate processing system according to the present embodiment
- FIGS. 2 and 3 are schematic diagrams of an internal configuration of the coating and developing treatment system 1, respectively.
- FIG. 2 is a front view and a rear view, respectively, schematically showing
- the coating and developing treatment system 1 includes a cassette station 10 in which a cassette Ca containing a plurality of wafers W is loaded and unloaded, and a processing station having a plurality of various processing devices for performing predetermined processing on the wafers W. 11, an interface station 12 provided adjacent to the processing station 11, a post-exposure station 13 for performing post-exposure on the wafer after pattern exposure, and an interface station 14 connected to the post-exposure station 13.
- an exposure device 15 that performs pattern exposure on the wafer W is provided adjacently.
- the interface station 14 delivers the wafer W to and from the exposure apparatus 15.
- the exposure apparatus 15 is provided with an exposure processing unit 15a that performs pattern exposure with EUV light on the wafer W after resist formation.
- the cassette station 10 is provided with a plurality of cassette placement plates 21 on which a cassette Ca is placed and a wafer transfer device 23 that is movable on a transfer path 22 extending in the X direction. It has been.
- the wafer transfer device 23 is also movable in the vertical direction and the vertical axis direction ( ⁇ direction), and between the cassette Ca on each cassette mounting plate 21 and a transfer device of a transfer block G3 of the processing station 11 described later. Can transfer the wafer W.
- the processing station 11 is provided with a plurality of, for example, four blocks G1, G2, G3, and G4 having various devices.
- a plurality of liquid processing apparatuses for example, a lower antireflection film that forms an antireflection film (hereinafter referred to as a “lower antireflection film”) below the resist film of the wafer W.
- Forming device 30 resist coating device 31 for applying a resist solution to wafer W to form a resist film, and upper antireflection film for forming an antireflection film (hereinafter referred to as "upper antireflection film") on the resist film of wafer W
- the film forming apparatus 32 and the development processing apparatus 33 for developing the wafer W are stacked in, for example, four stages from the bottom.
- Each of the devices 30 to 33 of the first block G1 has a plurality of cups, for example, four cups F1, F2, F3, and F4, which accommodate the wafer W during processing, in this order from the left side to the right side in the horizontal direction.
- a plurality of wafers W can be processed in parallel.
- a heat treatment apparatus 40 for performing heat treatment of the wafer W, an adhesion apparatus 41 as a hydrophobic treatment apparatus for hydrophobizing the wafer W, and an outer peripheral portion of the wafer W are exposed.
- Peripheral exposure devices 42 are arranged side by side in the vertical and horizontal directions.
- the heat treatment apparatus 40 includes a hot plate for placing and heating the wafer W and a cooling plate for placing and cooling the wafer W, and can perform both heat treatment and cooling treatment.
- the processing apparatuses 40 to 42 provided in a stacked manner are divided into modules A, B, C and D in this order from left to right in the horizontal direction.
- the processing of the wafer W can be performed independently in .about.D.
- the delivery block G3 is provided with a plurality of delivery devices 50, 51, 52, 53, 54, 55, 56 in order from the bottom.
- the delivery block G4 is provided with a plurality of delivery devices 60, 61, 62 in order from the bottom.
- a wafer transfer mechanism 70 is provided next to the delivery block G3 on the positive side in the Y direction.
- the wafer transfer mechanism 70 has a transfer arm that is movable in the Y direction, the ⁇ direction, and the vertical direction, for example.
- Wafer inspection devices 71 and 72 are provided on both the X direction positive side and the negative direction side of the wafer transfer mechanism 70 with the wafer transfer mechanism 70 interposed therebetween.
- Wafer accommodating containers 73 and 74 for accommodating a plurality of wafers W are provided on the Y direction positive direction side of the wafer transfer mechanism 70.
- the wafer container 73 is disposed near the second block G2, and the wafer container 74 is disposed near the first block G1.
- the wafer transfer mechanism 70 moves up and down while supporting the wafer W, and moves the wafer W between each transfer device, the wafer inspection devices 71 and 72, and the wafer containers 73 and 74 in the transfer block G3. Can be transported.
- the wafer inspection apparatus 71 in this embodiment measures the line width of the pattern formed on the wafer W, and the wafer inspection apparatus 72 shows an overlay error between the pattern already formed and the pattern exposed thereafter. Measure.
- a wafer transfer area Dw is formed in an area between the first block G1 and the second block G2.
- a plurality of wafer transfer mechanisms 80 are arranged in the wafer transfer area Dw.
- the wafer transfer mechanism 80 has a transfer arm 80a that is movable in the Y direction, the X direction, the ⁇ direction, and the vertical direction, for example.
- the wafer transfer mechanism 80 moves within the wafer transfer region Dw, and the predetermined first transfer device and wafer storage containers 73 and 74 in the transfer block G4 in the interface block 12 and the surrounding first and second blocks G1 and G2.
- the wafer W can be transferred.
- the interface station 12 includes the transfer block G4 having the transfer devices 60, 61 and 62, and the wafer transfer mechanism 90 capable of transferring the wafer W to and from the plurality of transfer devices 60, 61 and 62.
- the wafer transfer mechanism 90 has an arm 90a that is movable in the X direction, the Y direction, the ⁇ direction, and the vertical direction, for example.
- a load lock chamber 100 is provided at a position accessible by the arm 90a of the wafer transfer mechanism 90 of the interface station 12.
- a wafer transfer mechanism 101 is provided at a position accessible to the load lock chamber 100. Further, an arm 101a of the wafer transfer mechanism 101 is accessible to the wafer after pattern exposure.
- a light irradiation device 102 is provided as a device for performing post-exposure.
- the light irradiation device 102 has the configuration shown in FIG. 4, for example, and a light irradiation that irradiates the wafer W on the mounting table 103 with UV light having a predetermined wavelength on the mounting table 103.
- Part 104 the light irradiation unit 104 is configured as a so-called batch exposure type apparatus that collectively exposes the entire surface of the resist R on the wafer W, and includes a plurality of light sources 105.
- UV light is irradiated toward the wafer W.
- the wavelength of the UV light is, for example, 220 to 280 nm, and more preferably 222 nm, 248 nm, or 254 nm.
- this example is configured as a so-called batch exposure type apparatus that collectively exposes the entire surface of the resist R on the wafer W.
- the present invention is not limited to this, and a linear light source is used. It is possible to adopt a configuration in which UV light is scanned on the wafer W by moving or rotating at least one of the wafer W or the light source, and other configurations corresponding to the resist pattern on the wafer W. You may employ
- the post-exposure station 13 is configured to be airtight, and can be depressurized to a predetermined degree of depressurization, for example, 10 ⁇ 4 Pa to 10 ⁇ 7 Pa by a depressurization device (not shown). Thereby, in UV light irradiation or movement in the post-exposure station 13, it is possible to suppress the deactivation of acids and radicals due to amine components and oxygen contained in a trace amount in the air. From this point, a nitrogen gas supply source (not shown) and an exhaust device (not shown) are appropriately connected to the post exposure station 13 so that the inside of the post exposure station 13 is an inert gas atmosphere, for example, a nitrogen gas atmosphere. You may connect.
- the interface station 14 connected to the post exposure station 13 is also airtight, and a delivery device 110 having a mounting table or the like is provided at a position accessible by the arm 101 a of the wafer transfer mechanism 101 of the post exposure station 13. Further, a wafer transfer mechanism 112 is provided for transferring the wafer W of the delivery device 110 to and from the load lock chamber 111.
- the wafer transfer mechanism 112 has an arm 112a.
- the load lock chamber 111 of the interface station 14 is connected to an exposure apparatus 15 having an exposure processing unit 15 a that performs pattern exposure.
- the load lock chamber 111 relays between the interface station 14 and the exposure apparatus 15.
- the exposure processing unit 15a exposes the pattern to the resist on the wafer W with, for example, EUV light having a wavelength of 13.5 nm.
- EUV light having a wavelength of 13.5 nm.
- energy is attenuated when there are gas molecules in the atmosphere, and therefore the exposure apparatus 15 is subjected to a predetermined degree of decompression, for example, 10 ⁇ 4 Pa to 10 ⁇ 10 by a decompression device (not shown).
- the pressure is reduced to -7 Pa.
- a control unit 300 is provided as shown in FIG.
- the control unit 300 controls the operation of drive systems such as the above-described various processing apparatuses and wafer transfer mechanisms based on the processing recipe. Further, the line width of the pattern measured by the wafer inspection apparatus 71 is measured, and when there is a difference between the predetermined line width and an allowable value or more, the value is fed back to the light irradiation apparatus 102, for example, irradiation time, light intensity. Etc. are controlled so that the light irradiation device 102 is controlled to have a predetermined line width.
- the control unit 300 is configured by a computer including, for example, a CPU and a memory, and can implement a coating process in the coating and developing processing system 1 by executing a program stored in the memory, for example.
- Various programs for realizing the coating process in the coating and developing system 1 are, for example, a computer-readable hard disk (HD), a flexible disk (FD), a compact disk (CD), a magnetic optical desk (MO), and a memory card. Or the like installed in the control unit 300 from the storage medium H is used.
- the cassette Ca containing a plurality of wafers W is placed on a predetermined cassette placement plate 21 of the cassette station 10. Thereafter, the wafers W in the cassette Ca are sequentially taken out by the wafer transfer device 23 and transferred to the delivery block G3 of the processing station 11.
- the wafer W is transferred to the wafer container 73 by the wafer transfer mechanism 70, for example.
- the wafer W is transferred to the module A of the heat treatment apparatus 40 of the second block G2 by the wafer transfer mechanism 80, and the temperature is adjusted.
- the wafer W is transferred to the module A of the lower antireflection film forming apparatus 30 of the first block G1 by the wafer transfer mechanism 80, and a lower antireflection film is formed on the wafer W.
- the wafer W is transferred to the module A of the heat treatment apparatus 40 of the second block G2, and is subjected to heat treatment.
- the wafer W is transferred to the module A of the adhesion apparatus 41 of the second block G2 and subjected to a hydrophobic treatment. Thereafter, the wafer W is transferred to the module A of the resist coating apparatus 31 by the wafer transfer mechanism 80, and a resist film is formed on the wafer W. In this case, the resist film formed on the wafer W is a so-called photosensitized resist for EUV exposure. Thereafter, the wafer W is transferred to the module A of the heat treatment apparatus 40 and prebaked.
- the wafer W is transferred to the module A of the upper antireflection film forming apparatus 32, and an upper antireflection film is formed on the wafer W. Thereafter, the wafer W is transferred to the module A of the heat treatment apparatus 40, heated, and temperature-adjusted. Thereafter, the wafer W is transferred to the module A of the peripheral exposure apparatus 42 and subjected to peripheral exposure processing.
- the wafer W is transferred to the delivery block G4, transferred to the load lock chamber 100 of the post exposure station 13 by the wafer transfer mechanism 90 of the interface station 12, and then to the wafer transfer mechanism 101 and the wafer transfer mechanism 112 of the interface station 14. Then, it is transferred to the load lock chamber 111 and then transferred to the exposure device 15.
- the pattern is exposed to the wafer W by EUV exposure by the exposure processing unit 15a as described above.
- the wafer W on which the pattern exposure has been completed is transferred to the load lock chamber 111, and after that, the pressure is reduced to the same level as the interface station 14 and the post exposure station 13, and then transferred to the transfer device 110 by the wafer transfer mechanism 112. Next, the wafer is transported to the light irradiation device 102 by the wafer transport mechanism 101.
- the wafer W that has been subjected to pattern exposure by EUV light is subjected to batch exposure using UV light having a predetermined wavelength.
- a final resist pattern before the development processing is formed on the wafer W.
- the wafer W is transferred to the module A of the heat treatment apparatus 40 by the wafer transfer mechanism 80 and subjected to post-exposure baking. Thereafter, the wafer W is transferred to, for example, the cup F1 of the development processing device 33 and developed. After completion of the development process, the wafer W is transferred to the module A of the heat treatment apparatus 40 and subjected to a post-bake process.
- the wafer W is transferred to the wafer container 73.
- the wafer W is transferred to the wafer inspection devices 71 and 72 by the wafer transfer mechanism 70.
- the wafer inspection apparatus 71 for example, the line width of the final pattern is measured, and the measurement result is output to the control unit 300. Further, the overlay error is measured for the wafer W transferred to the wafer inspection apparatus 72, and the measurement result is output to the control unit 300.
- the wafer W that has been exposed to a fine pattern by EUV light is then subjected to UV light by the light irradiation device 102 of the post-exposure station 13. Since the batch exposure is performed, the pattern exposure processing with weak energy is photosensitized so that a resist pattern before development processing with high resolution and improved contrast is formed on the wafer W. Therefore, it is possible to assist the exposure with the EUV light in the exposure apparatus 15, and it is possible to reduce the EUV exposure time and exposure energy by the exposure processing unit of the exposure apparatus 15. Efficient operation is possible, and even in a photolithography process using EUV, it is possible to form a fine pattern on a substrate while suppressing a decrease in throughput.
- the wafer W that has been exposed to a fine pattern by EUV light is hermetically partitioned from the surroundings, and is collectively exposed in a post-exposure station 13 having a predetermined reduced pressure atmosphere or an inert gas atmosphere in a low oxygen atmosphere. Therefore, it is suitably suppressed that the generated acid or radical is deactivated. Further, since the post exposure station 13 is connected to the exposure apparatus 15 via the interface station 14 having the same atmosphere, the wafer W after the EUV exposure processing can be quickly and optically damaged without damaging the fine pattern by the EUV light. It can be conveyed to the irradiation apparatus 102 and predetermined UV exposure can be performed.
- the post exposure station 13 is configured as a section adjacent to the interface station 14 having the same atmosphere.
- the post exposure station 13 is integrated with the interface station 14 having the same atmosphere. You may comprise as one post exposure station thru
- the wafer W after the batch exposure by the UV exposure is transferred as it is from the interface station 12 that is the atmosphere on the processing station 11 side to the heat treatment apparatus that performs post-exposure baking.
- a heat treatment apparatus for performing post-exposure baking is provided in the same atmosphere as the post-exposure station 13. Is desirable.
- the post-exposure station 13 and the interface station 14 have an inert gas atmosphere such as nitrogen gas instead of a vacuum atmosphere.
- the line width of the pattern measured by the wafer inspection apparatus 71 is measured, and the measurement result is fed back to the light irradiation apparatus 102 via the control unit 300. It is possible to control the irradiation time of the irradiation apparatus 102, the intensity of light, and the like. Thus, it is possible to control more effectively by controlling the UV exposure after pattern exposure by EUV. That is, even if the exposure amount, time, etc. of the exposure device 15 are adjusted, the effect is very small, but the effect is remarkable when the UV light of the light irradiation device 102 is controlled, and therefore more effective and efficient. In addition, for example, the adjustment of the line width of the pattern can be adjusted efficiently.
- the interface station 12 performs post exposure on the wafer after pattern exposure using UV light, the interface station 14 in the same atmosphere as the post exposure station 13, and the wafer W.
- the exposure apparatus 15 that performs pattern exposure using EUV light is arranged in series in a straight line, but may be arranged as shown in FIG.
- the exposure apparatus 15 and the post-exposure station 13 are connected in parallel to the interface station 12 adjacent to the treatment station.
- the interface station 12 is provided with a wafer transfer device 162 that can move on the transfer path 161 extended in the X direction, like the wafer transfer device 23 of the cassette station 10.
- the wafer transfer device 162 is configured to be accessible to a delivery block G4, a load lock chamber 111 of the exposure device 15, and a delivery device 163 having a mounting table installed in the post exposure station 13.
- the interface station 12 is preferably in the same atmosphere as the post-exposure station 13, and considering the throughput and cost, the interface station 12 and the post-exposure station 13 are It is practical to use an inert gas atmosphere, for example, a nitrogen gas atmosphere.
- an inert gas atmosphere for example, a nitrogen gas atmosphere.
- the interface station 12 may be an inert gas atmosphere, and the delivery device 163 in the post exposure station 13 may be replaced with the load lock chamber 100 described above. Good.
- the exposure apparatus 15 having light sources of different wavelengths with respect to one interface station 12, and the post-exposure station 13 containing the light irradiation apparatus 102, however, since they are connected in parallel, one interface station 12 and one wafer transfer device 162 can quickly perform pattern exposure using EUV light and post-exposure processing using UV light, which is extremely efficient. good.
- the coating and developing processing system 170 that does not have the post-exposure station 13 is provided with an optical device in the exposure device 15 connected to the interface station 12 as shown in FIG.
- An irradiation device 102 may be installed. That is, in this coating and developing treatment system 170, the wafer transfer device 169 installed in the interface station 12 employs a transfer device that reciprocates in the Y direction, as in the conventional case, and the wafer transfer device 169 is connected to the interface station 12.
- the transfer block G4 and the transfer device 110 of the exposure apparatus 15 can be accessed.
- the exposure apparatus 15 is hermetically partitioned into a first section 171 in which the delivery apparatus 110, the wafer transfer mechanism 112, and the load lock chamber 111 are installed, and a second section 172 in a vacuum atmosphere. 102 is installed in the same second section 172 as the exposure processing unit 151a.
- the existing coating and developing processing system can be used as it is by modifying the inside of the exposure device 15.
- the exposure apparatus 15 is configured to include the exposure processing unit 15a that performs pattern exposure and performs exposure using EUV light.
- the exposure apparatus 15 is not limited to this, and exposure by EB, ArF excimer
- the present invention can also be applied to a configuration of an exposure processing unit that performs exposure using laser light and immersion exposure using ArF excimer laser light.
- the exposure speed is reduced, but the exposure speed of pattern exposure can be increased. Compensation of the exposure amount by reducing the exposure amount is performed by the light irradiation of the post exposure station 13. This can be done by batch exposure with UV light by the apparatus 102.
- the time required for the batch exposure by the light irradiation apparatus 102 is much shorter than the time required for the exposure process by EB, the time required for the entire exposure process can be reduced as a whole, and the throughput can be improved. Is possible. Even if exposure using ArF excimer laser light and immersion exposure using ArF excimer laser light are employed for pattern exposure, the total time required for exposure can be reduced and the throughput can be improved.
- the present invention is useful when constructing a substrate processing system for performing a photolithography process.
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Abstract
Description
本願は、2013年12月27日に日本国に出願された特願2013-271156号、及び2014年11月18日に日本国に出願された特願2014-233370号に基づき、優先権を主張し、その内容をここに援用する。
10 カセットステーション
11 処理ステーション
12、14 インターフェイスステーション
13 ポスト露光ステーション
15 露光装置
20 カセット載置台
21 カセット載置板
22 搬送路
23 ウェハ搬送装置
30 下部反射防止膜形成装置
31 レジスト塗布装置
32 上部反射防止膜形成装置
33 現像処理装置
40 熱処理装置
41 アドヒージョン装置
42 周辺露光装置
70 ウェハ搬送機構
71、72 ウェハ検査装置
80 ウェハ搬送機構
90 ウェハ搬送機構
100、111 ロードロック室
102 光照射装置
300 制御部
W ウェハ
Dw ウェハ搬送領域
Ca カセット
Claims (10)
- 基板を処理する基板処理システムであって、
基板を処理する複数の処理装置が設けられた処理ステーションと、
前記基板処理システムの外部に設けられて基板上のレジスト膜にパターンの露光を行う露光装置と、前記基板処理システムの間で、直接的または間接的に基板を受け渡すインターフェイスステーションと、
前記パターンの露光が行なわれた後の基板上のレジスト膜に対して、UV光によるポスト露光を行う光照射装置と、
前記光照射装置を収容し、減圧または不活性ガス雰囲気に調整可能なポスト露光ステーションと、を有し、
前記ポスト露光ステーションは、前記露光装置と直接的、または減圧または不活性ガス雰囲気に調整可能な空間を介して間接的に接続されている。 - 請求項1に記載の基板処理システムにおいて、
前記ポスト露光ステーションは、前記露光装置と前記インターフェイスステーションとの間に設けられている。 - 請求項2に記載の基板処理システムにおいて、
前記ポスト露光ステーションと前記露光装置との間に、ポスト露光ステーションと同一雰囲気の他のインターフェイスステーションが設けられている。 - 請求項1に記載の基板処理システムにおいて、
前記ポスト露光ステーションは、前記露光装置と並列に前記インターフェイスステーションに接続され、
前記インターフェイスステーションは、減圧または不活性ガス雰囲気に調整可能である。 - 請求項1に記載の基板処理システムにおいて、
前記ポスト露光後の基板に対して露光処理後の加熱処理を行う熱処理装置は、前記ポスト露光ステーションと同一雰囲気に設置されているか、熱処理を行う処理空間が前記ポスト露光ステーションと同一雰囲気に設定されている。 - 基板を処理する基板処理システムであって、
基板を処理する複数の処理装置が設けられた処理ステーションと、
基板にパターンの露光を行う露光装置と、
前記露光装置との間で基板を受け渡すインターフェイスステーションと、
前記パターンの露光が行なわれた後の基板に対して、UV光によるポスト露光を行う光照射装置とを有し、
前記光照射装置は、前記露光装置内でパターンの露光処理を行う露光処理部と同じ雰囲気のセクションに設けられている。 - 請求項1に記載の基板処理システムにおいて、
前記光照射装置によってポスト露光され,その後現像処理された後の基板を検査する検査装置を有し、
前記検査装置の検査結果に基づいて、前記光照射装置を制御する制御部を有する。 - 請求項6に記載の基板処理システムにおいて、
前記光照射装置によってポスト露光され,その後現像処理された後の基板を検査する検査装置を有し、
前記検査装置の検査結果に基づいて、前記光照射装置を制御する制御部を有する。 - 請求項1に記載の基板処理システムにおいて、
前記パターンの露光は、EUV光、EBまたはArFエキシマレーザー光によって行われる。 - 請求項6に記載の基板処理システムにおいて、
前記パターンの露光は、EUV光、EBまたはArFエキシマレーザー光によって行われる。
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JP7296410B2 (ja) * | 2018-07-17 | 2023-06-22 | エーエスエムエル ネザーランズ ビー.ブイ. | 粒子ビーム検査装置 |
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