WO2004114382A1 - パターン形成方法及び半導体装置の製造方法 - Google Patents
パターン形成方法及び半導体装置の製造方法 Download PDFInfo
- Publication number
- WO2004114382A1 WO2004114382A1 PCT/JP2004/008656 JP2004008656W WO2004114382A1 WO 2004114382 A1 WO2004114382 A1 WO 2004114382A1 JP 2004008656 W JP2004008656 W JP 2004008656W WO 2004114382 A1 WO2004114382 A1 WO 2004114382A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- pattern
- forming
- fluid film
- substrate
- Prior art date
Links
Classifications
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76807—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures
- H01L21/76813—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures involving a partial via etch
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76817—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics using printing or stamping techniques
Definitions
- the present invention relates to a method for forming a pattern and a method for manufacturing a semiconductor device.
- the present invention relates to a method for forming a pattern using an imprint method, and a method for manufacturing a semiconductor device using the pattern forming method.
- a metal film is mainly formed in the concave portion by a metal plating method.
- a damascene process is used, which buries and then planarizes the metal film by chemical mechanical polishing (CMP) to form buried interconnects.
- CMP chemical mechanical polishing
- Non-Patent Document 1 Applied Physics Letter, Volume 67 (1995), pp. 3114-3116.
- Patent Document 1 US Pat. No. 5,772,905 (1998.06.30) discloses a technique called nanoimprint lithography proposed by S.Y. Ghou et al.
- FIG. 17 (a) elements such as transistors and wiring are formed on the surface layer (not shown).
- a substrate (semiconductor wafer) 101 is thermally cured.
- the film 102A made of a conductive resin As shown in FIG. 17 (b), the pressing surface of the mold 103 having the convex portion 104 on the pressing surface is pressure-bonded to the film 102A, The convex portion 104 of the mold 103 is transferred to the film 102A.
- the film 102A is cured to form a cured film 102B.
- the mold 103 is irradiated with light such as ultraviolet rays together with pressure to form a cured film 102B.
- the mold 103 is removed from the cured fl More specifically, a concave portion 105 formed by transferring the convex portion 104 of the mold 103 is formed in the cured film 102B.
- anisotropic dry etching (anisotropic etch back) is performed on the entire cured film 102B, and as shown in FIG. 17 (e), the bottom of the recess 105 in the cured film 102B is formed. The remaining part is removed.
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2000-194142 discloses a method of using a photocurable material film made of a liquid photocurable substance as the film 102A, The applied pressure is reduced to several atmospheres by heating and irradiating the film 102 A with the mold 103 pressed against the 102 A, thereby reducing the applied pressure to several atmospheres. The aim is to improve the positional accuracy in the direction.
- a method for forming the embedded wiring forming the multilayer wiring by the damascene method will be described.
- a method of forming only an embedded plug or only an embedded wiring by the damascene method is called a single damascene method
- a method of simultaneously forming both a buried plug and an embedded wiring by the damascene method is called a dual damascene method.
- a substrate (semiconductor wafer) 1 1 1 1 is formed by chemical vapor deposition (CVD) or spin on dielectric (SOD), for example.
- an insulating film 112 made of, for example, a silicon oxide film is formed.
- a resist pattern 113 is formed on the insulating film 112.
- a concave portion 114 composed of a via hole or a wiring groove is formed in the insulating film 112.
- a re-barrier metal layer (not shown) by, for example, a sputtering method
- copper is formed on the re-barrier metal layer by, for example, a plating method.
- GNIP chemical mechanical polishing
- a method of manufacturing a semiconductor device in which a replug and metal wiring are formed by a dual damascene method will be described with reference to FIGS. 19 (a) to (d) and FIGS. 20 (a) to (d).
- the process of forming a via hole, forming a wiring groove, and then embedding a metal film in the via hole and the wiring groove to form a plug and a metal wiring a so-called via-first process, will be described.
- an insulating film 122 made of, for example, a silicon oxide film is formed on a substrate (semiconductor wafer) 121 by, for example, a chemical vapor deposition method or a coating method. I do.
- an anti-reflection film (BARG) 125 is formed on the insulating film 122 including the inside of the via hole 124, the anti-reflection film 125 is formed.
- a second resist pattern 126 having an opening for forming a wiring groove is formed thereon.
- the anti-reflection film 125 is dry-etched using the second resist pattern 126 as a mask, so that the anti-reflection film 125 is formed. After being left under the via hole 124, dry etching is performed on the insulating film 122 using the second resist pattern 126 and the antireflection film 125 as a mask. A wiring groove 1 2 7 is formed in 22.
- a re-barrier metal layer (not shown) is formed by sputtering.
- a copper film 128 is formed on the rebarrier metal layer by a plating method to form a via hole 124 and a wiring groove 127. Deposit to be embedded.
- an unnecessary portion of the copper film 128, that is, a portion exposed on the insulating film 122 is removed by a chemical mechanical polishing method, so that copper is removed as shown in FIG. 20 (d).
- the plugs 130 and the metal wirings 131 made of the film 128 are simultaneously formed.
- the number of processes is reduced by applying nanoimprint lithography instead of the combination of lithographic resist pattern formation and dry etching, thereby reducing the number of processes and reducing cost. Consideration of the conversion was considered.
- the insulating material is usually heated at a temperature of about 400 ° C. Heating and curing processes are required.
- the heating temperature is at most about 200 ° C.
- an object of the present invention is to enable a pattern having a uniform basic skeleton structure and improved film quality to be formed in a small number of steps.
- a pattern forming method includes: a step of forming a fluid film made of a material having fluidity; and a step of forming at least one of a concave portion and a convex portion on a pressing surface. Pressing the pressing surface of the member against the fluid film to transfer at least one of the concave portion and the convex portion to the fluid film; and applying the first temperature to the fluid film while the pressing surface is pressed against the fluid film. Forming a solidified film by solidifying the fluidized film on which at least one of the concave portion and the convex portion is transferred, and setting the solidified film to a second temperature higher than the first temperature. Heating and baking the solidified film to form a pattern made of the fired solidified film.
- the solidifying step and the firing step are performed on the fluid film. Is performed to form a pattern, so that the pattern can be formed in a small number of steps.
- the pressing surface of the pressing member is pressed against the fluid film to form a solidified film that transfers at least one of the concave portion and the convex portion to the fluid film.
- a basic skeleton of the solidified film for example, a polymer skeleton in an organic film, a siloxane skeleton in a silicon oxide film or an organic-inorganic composite film, or a resin skeleton in a resist film
- the porogen X Porogen
- the structure of the basic skeleton of the pattern becomes more uniform.
- the relative dielectric constant becomes uniform over the entire film, so that the reliability of the insulating film is improved.
- the first temperature is from about 150 ° ⁇ to about 300 °. ° C.
- the basic skeleton of the fluid film can be formed without evaporating porogen and the like contained in the fluid film.
- the second temperature is about 350 ° C. to about 450 ° C.
- porogen and the like can be evaporated from the solidified film without deteriorating the film quality of the solidified film and thus of the pattern.
- an insulating substance can be used as the substance having fluidity.
- the substance having fluidity is preferably in a liquid state or in a jewel state.
- the step of forming a flowable film includes the step of supplying a flowable substance onto a rotating substrate to form the flowable film on the substrate. Is preferred.
- the thickness of the fluid film can be made uniform.
- the step of forming the fluid film includes the steps of: supplying a material having fluidity onto the substrate; and rotating the substrate to form the fluid film on the substrate. It is preferable to include
- the thickness of the fluid film can be made uniform.
- the step of forming the flowable film includes the step of supplying a flowable substance onto the rotating substrate in the form of a shower or a spray, thereby forming the flowable film on the substrate. It is preferable to include a step of forming the above.
- the step of forming the flowable film includes, while relatively moving a nozzle having a fine injection port and the substrate in a plane direction, transferring a fluid substance from the injection port to the substrate. It is preferable to include a step of forming a fluid film on the substrate by supplying the film on the substrate. By doing so, the thickness of the fluid film can be controlled to a desired size by adjusting the relative movement speed between the nozzle and the substrate. Further, the degree of fluidity of the fluid film can be changed by adjusting the viscosity of the material having fluidity. Further, the processing speed can be controlled by adjusting the number of nozzles.
- the step of forming the fluid film is performed by supplying a material having fluidity attached to the surface of the roller onto the substrate while rotating the roller. It is preferable to include a step of forming on the substrate. With this configuration, the thickness of the fluid film can be controlled by adjusting the distance between the roller and the substrate and the force pressing the roller against the substrate. Further, a material having high viscosity and fluidity can be employed.
- the peripheral portion of the fluid film is selectively removed between the step of forming the fluid film and the step of transferring at least one of the concave portion and the convex portion to the fluid film.
- the method further comprises a step of performing
- the step includes adding fluidity to the peripheral portion of the fluid film while rotating the fluid film. It is preferable to carry out the reaction by supplying a solution that dissolves the substance.
- peripheral portion of the substrate having a circular or polygonal planar shape with many corners can be reliably removed.
- the step includes irradiating the peripheral portion of the fluid film with light to modify the peripheral portion. It is preferable that the removal be performed by removing the peripheral portion.
- the fluid film is formed on the substrate.
- the step of transferring the irregularities to the fluid film the plurality of distances between the surface of the substrate and the pressing surface are measured, and the reflowable film is moved by the pressing surface so that the plurality of distances are equal. It is preferable to include a pressing step.
- the distance between the surface of the fluid film and the surface of the substrate can be always equalized, so that the operation of making the distance between the surface of the substrate and the pressing surface of the pressing member uniform every predetermined period is omitted. be able to.
- the fluid film is formed on the substrate, and the step of transferring at least one of the concave portion and the convex portion to the fluid film is performed on a stage on which the substrate is mounted. It is preferable to include a step of measuring a plurality of distances between the surface and the pressing surface, and pressing the reflowable film by the pressing surface such that the plurality of distances are equal.
- the distance between the surface of the fluid film and the surface of the substrate can be always equalized, so that the operation of making the distance between the surface of the substrate and the pressing surface of the pressing member uniform every predetermined period is omitted. be able to.
- the step includes: Is preferably measured.
- the pressing surface of the pressing member has hydrophobicity.
- the substance having fluidity is a photocurable resin
- the step of forming the solidified film preferably includes a step of irradiating the fluidized film with light.
- the fluid film can be easily and quickly solidified by a photochemical reaction and a thermochemical reaction.
- an organic material an inorganic material, an organic-inorganic hybrid material, a photocurable resin, or a photosensitive resin is used.
- an organic material an inorganic material, an organic-inorganic hybrid material, a photocurable resin, or a photosensitive resin is used.
- the pattern is preferably a porous film.
- the step of forming the pattern includes a step of heating the solidified film to the second temperature while the pressing surface is pressed against the solidified film.
- the shape of at least one of the concave portion and the convex portion formed on the solidified film can be maintained with high accuracy.
- the step of forming the pattern includes the step of heating the solidified film to the second temperature with the pressing surface separated from the solidified film.
- the porogen contained in the solidified film, the remaining solvent, and the like can be easily evaporated.
- the method for manufacturing a semiconductor device includes a step of forming a fluid film made of an insulating material having fluidity, and a step of pressing a pressing surface of a pressing member having a convex portion on the pressing surface against the fluid film. Transferring the convex portion to the fluid film, and heating the fluid film to the first temperature while the pressing surface is pressed against the fluid film to solidify the fluid film to which the convex portion is transferred.
- the step of forming a solidified film and the step of heating the solidified film to a second temperature higher than the first temperature and firing the solidified film, thereby forming a solidified film that has been fired, and A step of forming a pattern having a concave portion of a corresponding shape; and a step of burying a metal material in the concave portion to form at least one of a metal wiring and a plug made of a metal material.
- the pattern after transferring the convex portion formed on the pressing surface of the pressing member to the fluid film, Since the pattern is formed by performing the solidification step and the firing step, the pattern can be formed with a small number of steps.
- the step of forming the solidified film after forming the basic skeleton of the solidified film, in the step of forming a pattern, porogen such as acryl polymer or the remaining solvent is vaporized from the solidified film. Since the structure of the basic skeleton of the pattern is uniform, the film quality of the pattern is improved. Therefore, the relative dielectric constant of the insulating film composed of the pattern becomes uniform throughout the film, so that the reliability of the insulating film and thus the reliability of the semiconductor device are improved.
- a metal wiring or plug made of a metal material is formed by a single damascene method, and when the concave portion in the pattern is a wiring groove or hole, it is formed by a dual damascene method. A metal wiring and a plug made of a metal material are formed.
- the first temperature is about 150 ° C. to about 300 ° C.
- the basic skeleton of the fluid film can be formed without evaporating porogen and the like contained in the fluid film.
- the second temperature is about 350 ° C. to about 450 ° C.
- porogen and the like can be evaporated from the solidified film without deteriorating the film quality of the solidified film and thus of the pattern.
- the material having fluidity is a photocurable resin
- the step of solidifying the fluid film preferably includes a step of irradiating the fluid film with light.
- the fluid film can be easily and quickly solidified by a photochemical reaction and a thermochemical reaction.
- an organic material an inorganic material, an organic-inorganic hybrid material, a photocurable resin, or a photosensitive resin can be used.
- the step of forming the pattern includes the step of heating the solidified film to the second temperature with the pressing surface pressed against the solidified film.
- the step of forming a pattern includes: It is preferable that the method further includes a step of heating the solidified film to the second temperature with the pressure surface separated from the solidified film.
- the porodiene or the remaining solvent contained in the solidified film can be easily evaporated.
- the pattern is preferably a porous film.
- the relative permittivity of the pattern is preferably about 4 or less.
- the relative dielectric constant of the insulating film can be reliably reduced, and the capacitance between the metal wires can be reduced.
- the remaining portion existing at the bottom of the concave portion in the pattern is provided after the step of forming the pattern and before the step of forming at least one of the metal wiring or the plug. It is preferable to include a step of removing by etching.
- FIGS. 1A to 1E are cross-sectional views illustrating each step of the pattern forming method according to the first embodiment.
- FIGS. 2A to 2E are cross-sectional views illustrating each step of the pattern forming method according to the second embodiment.
- FIG. 3A is a flowchart illustrating a sequence of a conventional pattern forming method
- FIG. 3B is a flowchart illustrating a sequence of a pattern forming method according to the first or second embodiment.
- FIGS. 4A to 4C are cross-sectional views showing each step of the first example in the pattern forming method according to the first or second embodiment.
- FIGS. 5A and 5B are cross-sectional views showing each step of the second example in the pattern forming method according to the first or second embodiment.
- FIGS. 6A and 6B are cross-sectional views showing steps of a third embodiment of the pattern forming method according to the first or second embodiment.
- FIGS. 7A and 7B are cross-sectional views showing each step of a fourth embodiment of the pattern forming method according to the first or second embodiment.
- FIGS. 8A to 8G are cross-sectional views showing each step of the pattern forming method according to the third embodiment.
- FIGS. 9A to 9G are cross-sectional views showing each step of the pattern forming method according to the third embodiment.
- FIGS. 10A and 10B are cross-sectional views showing each step of the pattern forming method according to the fourth embodiment.
- FIGS. 11A and 11B are cross-sectional views showing each step of the pattern forming method according to the fourth embodiment.
- FIGS. 12A and 12B are cross-sectional views showing each step of the pattern forming method according to the fifth embodiment.
- FIGS. 13A to 13D are cross-sectional views illustrating respective steps of a method for manufacturing a semiconductor device according to the sixth embodiment.
- FIGS. 14A to 14D are cross-sectional views showing each step of the method for manufacturing a semiconductor device according to the sixth embodiment.
- FIGS. 15A to 15D are cross-sectional views showing each step of the method for manufacturing a semiconductor device according to the seventh embodiment.
- FIGS. 16A to 16D are cross-sectional views illustrating respective steps of a method for manufacturing a semiconductor device according to the seventh embodiment.
- FIGS. 17A to 17E are cross-sectional views showing each step of a pattern forming method according to a first conventional example.
- FIGS. 18 (a) to 18 (e) are cross-sectional views showing steps of a method of manufacturing a semiconductor device according to a second conventional example.
- FIGS. 19 (a) to 19 (d) show respective steps of a method for manufacturing a semiconductor device according to a third conventional example. It is sectional drawing.
- FIGS. 20 (a) to (d) are cross-sectional views showing steps of a method of manufacturing a semiconductor device according to a third conventional example.
- a material having fluidity for example, a liquid or girder-like material is supplied to the surface of a substrate 11 made of a semiconductor wafer to form a film having fluidity (hereinafter simply referred to as a film).
- a film having fluidity hereinafter simply referred to as a film.
- a heat treatment at about 80 ° C. to 120 ° C. is performed in order to evaporate a part or most of the solvent in the fluid film 12A formed on the substrate 11. This heating is usually called pre-bake.
- the pre-bake temperature is set to such an extent that the fluidity of the fluid film 12A can be secured in the subsequent transfer step. Good. That is, the temperature may be set according to the material properties (such as the boiling point) of the solvent when supplying the fluid substance, and in some cases, the pre-bake may be omitted.
- Examples of the fluid film 12 A include an organic film, an inorganic film, an organic-inorganic mixed film (organic-inorganic hybrid film), a photocurable resin which cures when irradiated with light, a photosensitive resin film such as a resist film, Alternatively, a porous film (porous film) having a large number of pores having a diameter of about 1 nm to 1 O nm in the film may be used.
- Examples of the method of forming the fluid film 12A include a spin coating method, a micro spraying method and a rotating roller method, and the adjustment of the thickness of the fluid film 12A differs depending on each method. However, the thickness can be adjusted by selecting the method of forming the fluid film 12A. The details of the method of forming the fluid film 12A will be described in detail in the first to fourth embodiments.
- the planar shape of the substrate 11 is not particularly limited, and may be any shape such as a circle or a polygon.
- the fluid film 12A is used as an interlayer film of a multilayer wiring, a material having fluidity It is preferable to use an insulating material as the quality.
- FIG. 1 (b) After the pressing surface of the pressing member 13 having a flat pressing surface having uneven portions on its surface is opposed to the surface of the fluid film 12A, By applying pressure in the direction of the substrate to the pressing member 13, the irregularities are transferred to the surface of the fluid film 12 A, and the area of the surface of the fluid film 12 A excluding the transferred irregularities is removed. Flatten over the entire surface.
- reference numeral 14 denotes a convex portion provided on the pressing surface.
- the flowable film 12A is only pressed by the pressing surface of the pressing member 13, and the area of the surface of the flowable film 12A except for the transferred irregularities is flattened over the entire surface. .
- the fluid film 12A changes into an energy-stable shape due to the surface tension of the fluid film 12A.
- the fluid film 12A is heated to the first temperature (T1) while the pressing member 13 is pressed against the fluid film 12A, and the The fluid film 12A is solidified by causing a chemical reaction inside the porous film 12A, and the solidified film 1 made of the solidified fluid film 12A and having the uneven portions transferred thereto.
- the first temperature (T 1) is preferably from about 150 ° C. to about 300 ° C., and more preferably from about 200 ° C. to about 250 ° C.
- the basic skeleton of the fluid film 12A for example, a polymer skeleton or a siloxane skeleton is surely formed.
- heat treatment is performed for about 2 to 3 minutes using a hot plate set at a predetermined temperature.
- the solidified film 12B is heated to a second temperature (T1) higher than the first temperature (T1).
- T 2 is preferably from about 350 ° C to about 450 ° C.
- porogens and the like are evaporated from the solidified film 12B on which the basic skeleton is formed, and a pattern 12C having uniform film quality is obtained.
- heat treatment is performed for about 2 minutes to about 15 minutes using a hot plate set at a predetermined temperature.
- the pressing member 13 is separated from the pattern 12 C, and then the temperature of the pattern 12 C is finally set.
- the temperature is lowered to room temperature, as shown in FIG. 1 (e)
- the pressing member 13 has a concave portion 15 to which the convex portion 14 is transferred, and a region excluding the concave portion 15 is flat over the entire surface. A certain pattern 1 2 C is obtained.
- the pressing surface is subjected to a Teflon (registered trademark) coating treatment or a surface treatment with a silicon coupling material so that the pressing surface having the uneven portion of the pressing member 13 has hydrophobicity.
- a Teflon (registered trademark) coating treatment or a surface treatment with a silicon coupling material so that the pressing surface having the uneven portion of the pressing member 13 has hydrophobicity.
- the uneven portion provided on the pressing surface of the pressing member 13 is a column-shaped (dot-shaped) convex portion, a hole is formed in the pattern 12C, and if the concave-convex portion is a line-shaped convex portion, wiring is performed on the pattern 12C. A groove is formed. Conversely, if the concave and convex portions provided on the pressing surface of the pressing member 13 are hole-shaped concave portions, column-shaped (dot-shaped) convex portions are formed on the pattern 12C, and the groove-shaped concave portions may be formed. For example, a line is formed in the pattern 12C.
- Aromatic polymers having an aryl ether as a main skeleton are mentioned as substances having a kinetic property for forming an organic film.
- 1_ and 0X-3 manufactured by Honeywell
- S i LK manufactured by Dow Chemical Co.
- the material having fluidity for forming an inorganic film include HSQ (Hydrogen sil squioxane), or organic SOG such as an alkylsiloxane polymer.
- HSQ Is F O X manufactured by Dow Cornin
- organic SOG is HSG-RZ25 (manufactured by Hitachi Chemical).
- an organic siloxane containing an organic group such as a methyl group in a siloxane skeleton can be mentioned.
- HO SP Hybrid organic siloxane polymer: Honeywell.
- PDG I Poly dimethyl glutar imide
- SAL 101 Chipley Fa r East.
- a normal resist material used in lithography technology can be used as a substance having fluidity for forming a photosensitive resin film.
- Examples of the substance having fluidity for forming the porous film include an organic material, an inorganic material, and an organic-inorganic hybrid material having pores.
- Specific examples of the organic material having pores include Porous FLARE. (Manufactured by Honeywell).
- Specific examples of the inorganic material having pores include XLK (manufactured by Dow Corning) having pores in HSQ (Hydrogen silsquioxane).
- Hybrid materials include Nanog ass (manufactured by Honeywel I), and KD-5109 (manufactured by JSR).
- the dense and ordinary silicon oxide film ( The dielectric constant is about 4.)
- an interlayer insulating film having an extremely low dielectric constant of 2 or less can be realized.
- the present invention is not limited to the insulating film, and can be used as a method for forming a conductive polymer film or a metal film.
- a pressing member 13 is formed as shown in FIG. 2 (b). Is pressed against the fluid film 12 A to transfer the irregularities on the pressed surface to the fluid film 12 A and to flatten the entire area of the fluid film 12 A excluding the transferred irregularities. .
- FIG. 2 (c) while the pressing member 13 is pressed against the fluid membrane 12A, the fluid membrane 12A is heated to the first temperature (T1), and the fluid By causing a chemical reaction inside the flexible film 12A, the fluid film 12A is solidified to form a solidified film 12B having a flat surface on which the M convex portions are transferred.
- the solidified film 12B has a second temperature higher than the first temperature (T1).
- T 2 a temperature of 2
- T 3 a temperature of 2
- T 3 the temperature of the pattern 12 C
- the temperature is lowered to about room temperature, as shown in FIG. 1 (e)
- the difference between the first embodiment and the second embodiment is that in the first embodiment, firing is performed in a state where the pressing surface of the pressing member 13 is pressed against the solidified film 12B, but in the second embodiment, The firing is performed in a state where the pressing surface of the pressing member 13 is separated from the solidified film 12B. Therefore, in the second embodiment, it is necessary to heat using a hot plate in the solidification step, but it is possible to heat using a hot plate or a harness in the firing step.
- the second embodiment is more effective than the first embodiment in the case where a solidified film with a large amount of degassing is heated in a firing step (a step of forming a pattern).
- a firing step a step of forming a pattern.
- the concentration of the residual solvent in the film can be controlled by the pre-bake, so that there is almost no degassing in the baking process. Degassing may occur in the firing step.
- the heat treatment at the first temperature (T 1) in the solidification step forms most of the basic structure of the film
- the heat treatment at the second temperature (T 2) in the firing step In the firing step according to the second embodiment, the pressing member 13 is fired in a state where the pressing member 13 is separated from the solidified film 12B in order to evaporate the substance for forming the holes, which has been added to form the holes. Is suitable.
- the formation of the basic skeleton of the membrane during the solidification process In the case of an optimized film that is formed and most of the material for forming pores evaporates, a good pattern 12C can be obtained even by using the firing step of the first embodiment.
- the heating temperature (second temperature) in the firing step is set higher than the heating temperature (first temperature) in the solidification step.
- the heating temperature (first temperature) in the solidification step is preferably about 150 ° C. to 300 ° C.
- the heating temperature in the firing step (second temperature). ) Is preferably about 350 ° C. to 450 ° C.
- the conventional pattern forming method forms a film having irregularities by a single heating step in a film curing step after pressing a pressing member (mold).
- the ⁇ convex portion is formed by two-stage heat treatment in the solidification step and the firing step.
- the transferred pattern 12C is formed.
- FIG. 4 (a) After holding the substrate 21 on a rotatable stage 20 by vacuum suction, an appropriate amount of a fluid substance 23 is dropped on the substrate 21, Then, the stage 20 is rotated, or, as shown in FIG. 4 (b), the substrate 21 is held on the rotatable stage 20 by vacuum suction, and then the stage 20 and thus the substrate 20 are held. While rotating 1, a fluid substance 23 is supplied onto the substrate 21 from the dropping nozzle 24.
- the viscosity of the fluid substance 23 and the rotation speed of the stage 20 are optimized by optimization.
- a fluid film 22 having a hardness suitable for the step of transferring the uneven portion of the pressing member 13 (see FIG. 1 (b) or 2 (b)) to the surface of the fluid film 22 is obtained. be able to.
- the first embodiment is suitable for forming a fluid film 22 having a relatively large thickness.
- the substrate 21 is held on a rotatable stage 20 by vacuum suction, and then, while the stage 20 and thus the substrate 21 are rotated, the injection is performed.
- a substance 26 having fluidity is supplied from the injection port of the nozzle 25 onto the substrate 21 in the form of a spray or a spray.
- the fluid film 22 is formed on the substrate 21. It is formed.
- the second embodiment is suitable for forming a fluid film 22 having a relatively small thickness.
- FIGS. 6 (a) and 6 (b) a microscopic spraying method will be described with reference to FIGS. 6 (a) and 6 (b).
- the substrate 21 is moved in one of two orthogonal directions of the two-dimensional orthogonal coordinate system, for example, in the left-right direction in FIG. While moving the dropping nozzle 27 in the other direction of the two directions, for example, the vertical direction in FIG. 6 (a), the material 28 having fluidity is dropped onto the substrate 21 from the dropping nozzle 27. Supply by a predetermined amount. That is, after the substrate 21 is moved to the left in FIG. 6A by a predetermined amount, the operation of stopping is repeated, and the drip nozzle 27 is moved to the position shown in FIG. )), A predetermined amount of a fluid substance 28 is supplied from the drip nozzle 27 onto the substrate 21 while being moved upward or downward.
- a fluid film 22 is formed on the substrate 21 as shown in FIG. 6 (b).
- the flowable substance 2 supplied from the drip nozzle 27 By adjusting the amount of 8 and the moving speed of the dropping nozzle 27, the thickness of the fluid film 22 can be controlled from a small film thickness to a large film thickness.
- the degree of fluidity of the fluid film 22 can be changed by adjusting the viscosity of the fluid material 28 supplied from the dropping nozzle 27.
- the processing speed can be controlled by adjusting the number of dropping nozzles 27.
- the rotating roller 29 is moved along the surface of the substrate 21 with the fluid material 30 uniformly adhered to the peripheral surface of the rotating roller 29. Rotate to move.
- the thickness of the fluid film 22 can be controlled by adjusting the distance between the rotating roller 29 and the substrate 21 and the force pressing the rotating roller 29 against the substrate 21. it can.
- the fourth embodiment is suitable when the substance 30 having fluidity is in a highly viscous liquid or in a gier state.
- the third embodiment is a method for selectively removing a peripheral portion of a fluid film obtained according to the first or second embodiment, wherein the first method comprises forming a fluid film.
- a solution for dissolving the fluid film is supplied to the periphery of the fluid film while rotating the substrate, and the periphery is removed.
- the second method is to irradiate light to the periphery of the fluid film. Then, after the peripheral portion is modified, the modified peripheral portion is removed.
- the fluid film is formed over the entire surface of the substrate, that is, up to the periphery of the substrate.
- the periphery of the board is mechanically held May be required.
- the third embodiment is made to solve such a problem, and according to the third embodiment, the peripheral portion of the fluid film is selectively removed, so that the peripheral portion of the substrate is removed. Can be easily held mechanically.
- a substrate 21 on which a fluid film 22 is formed is vacuum-adsorbed onto a rotatably provided stage 20, and then the stage 20 is rotated. Then, the fluid film 22 is rotated, the stripping solution 33 is supplied from the first nozzle 31 to the periphery of the fluid film 22, and the stripping solution 34 is supplied from the second nozzle 32. It is supplied to the back surface of the peripheral part of the substrate 21.
- the peripheral portion of the fluid film 22 can be removed, and at the same time, the material having fluidity attached to the peripheral portion of the back surface of the substrate 21 is removed. be able to.
- the first method is preferably performed before the transfer step for the fluid film 22.
- the first method is suitable for the substrate 21 whose planar shape is a polygon having a large number of corners, since the peripheral portion is removed while rotating the stage 20 and thus the fluid film 22.
- a substrate 21 on which a fluid film 22 is formed is vacuum-adsorbed onto a rotatable stage 20 and then the stage 20 is rotated. Then, the fluid film 22 is rotated, and light 36 is irradiated from the light irradiation device 35 to the periphery of the fluid film 22, so that the light is irradiated at the periphery (light irradiation portion) of the fluid film 22.
- a photochemical reaction is caused to modify the peripheral portion.
- the light 36 is ultraviolet light or ultraviolet light. Light having a shorter wavelength than light is preferred.
- a solution 37 such as a developer is spread over the entire surface of the fluid film 22. Supply. By doing so, the modified peripheral portion of the fluid film 22 is dissolved in the solution 37, so that the peripheral portion of the fluid film 22 can be selectively removed.
- the stage 20 and thus the fluid film 22 are rotated again to remove the solution 37 remaining on the fluid film 22 by centrifugal force.
- the second method is preferably performed before the transfer step for the fluid film 22.
- the second method is to selectively irradiate the light 36 to the peripheral portion of the fluid film 22, so that not only the substrate 21 whose planar shape is a circle or a polygon having many corners, but also a triangle or a square
- the present invention can also be applied to a polygonal substrate 21 having a small number of corners.
- the fourth embodiment is a preferred method for transferring the uneven portion to the surface of the fluid film obtained by the first or second embodiment, comprising: pressing the pressing member with the surface of the substrate or the surface of the stage. It measures a plurality of distances from the surface and presses the fluid membrane so that the plurality of distances are equal.
- an uneven portion and a plurality of distances are formed on the pressing surface.
- the uneven portion of the pressing member 43 is transferred to the fluid film 42.
- the outer dimensions of the stage 20 see FIG. 4 (C) or FIG. 5 (b)
- the surface of the substrate 41 or the substrate 41 is placed by the plurality of distance sensors 44
- the plurality of distances between the surface of the stage 20 (see FIG. 4 (c) or FIG. 5 (b)) and the pressing surface of the pressing member 43 are measured, and the distances are made equal.
- the fluid film 42 is pressed by the pressing member 43 to transfer the uneven portion of the pressing member 43 to the fluid film 42. That is, information on the plurality of distances measured by the plurality of distance sensors 44 is fed back to the pressing unit that presses the pressing member 43, and presses the fluid membrane 42 so that the plurality of distances are equal. .
- the feedback control may be performed by a computer. Further, the distance between the surface of the substrate 41 or the surface of the stage 20 on which the substrate 41 is placed (see FIG. 4 (G) or FIG. 5 (b)) and the pressing surface of the pressing member 43 is also described. When measuring a plurality of distances, it is preferable to measure the capacitance per unit area at the measurement site. In this way, a plurality of distances can be measured simply and reliably.
- a, b, c,..., Q indicate positions where the distance sensors 44 are arranged.
- the positions a to q of the distance sensor 44 are preferably optimized according to the mechanism of the pressing member 43, and the surface of the substrate 41 or the surface of the stage on which the substrate 41 is placed, and the fluid film What is necessary is just to set to the position where the distance to the surface of 42 can be measured efficiently.
- the sensor positions a to i at the center are suitable for measuring the distance between the surface of the substrate 41 and the surface of the fluid film 42
- the sensor positions j to q at the periphery are the substrate 41 It is suitable for measuring the distance between the surface of the stage on which is mounted and the surface of the fluid film 42.
- only the distance between the surface of the substrate 41 and the surface of the fluid film 42 may be measured using only the distance sensors 44 at the sensor positions a to i, or the distance sensors at the sensor positions ⁇ to q.
- only the distance between the surface of the stage on which the substrate 4 1 is placed and the surface of the fluid film 4 2 may be measured, or only the distance sensors 4 4 at the sensor positions a to q may be measured.
- the distance between the surface of the substrate 41 and the surface of the fluid film 42 and the distance between the surface of the stage on which the substrate 41 is mounted and the surface of the fluid film 42 may be measured by using the method.
- the distance between the surface of the substrate 41 and the surface of the fluid film 42 is determined by using the distance sensors 44 at the sensor positions a to i. After the adjustment, the distance between the surface of the substrate 41 and the surface of the fluid film 42 may be adjusted using the distance sensors 44 at the sensor positions j to q. By doing so, more accurate flattening can be realized.
- the number and position of the distance sensors 44 may be optimized according to the required degree of flatness.
- the distance between the surface of the fluid film 12A and the surface of the substrate 11 is important but not easy to make the distance between the surface of the fluid film 12A and the surface of the substrate 11 equal. That is, according to the first embodiment, by setting in advance the distance between the surface of the substrate 11 and the pressing surface of the pressing member 13 to be uniform, the surface of the fluid film 12A is Although the distance from the surface of the substrate 11 can be made uniform, according to this method, the pressing surface of the tab pressing member 13 is pressed against a predetermined number of fluid films 12 A at predetermined intervals. Each time, the distance between the surface of the substrate 11 and the pressing surface of the pressing member 13 must be set to be uniform.
- the distance between the surface of the fluid film 42 and the surface of the substrate 41 can always be equalized, so that the surface of the substrate 41 and the pressing member 4 are fixed at predetermined intervals.
- the operation of making the distance with the pressing surface of 3 uniform can be omitted.
- the step of uniformly adjusting the distance between the surface of the substrate 41 and the pressing surface of the pressing member 43 is performed before, during, or after the process of pressing the fluid film 42 by the pressing member 43. May be.
- FIG. 11A shows a cross-sectional state of the fluid film 42 when the distance between the pressing surface of the pressing member 43 and the surface of the substrate 41 becomes non-uniform
- FIG. 4 shows a cross-sectional state of the fluid film 42 when the distance between the pressing surface of the pressing member 43 and the surface of the substrate 41 is kept uniform.
- reference numeral 45 denotes a pressing plate for applying pressure to the pressing member 43.
- the fluid film 42 is maintained while keeping the distance between the pressing surface of the pressing member 43 and the surface of the substrate 11 uniform.
- the surface of the fluid film 42 can be flattened with the distance of the fluid film 42 from the surface of the substrate 41 being uniform.
- the fifth embodiment is a method of solidifying the reflowable film 52A by heating while irradiating the flowable film 52A with light.
- the fluid film 52A formed on the substrate 51 has an uneven portion on a pressing surface made of a material that transmits light, for example, quartz.
- the pressing surface of the pressing member 53 is pressed by the pressing plate 54, and the unevenness of the pressing member 53 is transferred to the flowable film 52A, and the light is applied to the flowable film 52A and the flow is performed.
- the fluidized film 52A is mainly solidified by a photochemical reaction, ultraviolet light or light having a shorter wavelength than the ultraviolet light is used as the irradiation light, and the reflowable film 52 is mainly formed by a thermochemical reaction.
- solidifying A it is preferable to use infrared light. In this way, the fluid film 52A is solidified by a photochemical reaction or a thermochemical reaction, and a solidified film 52B is obtained as shown in FIG. 12 (b).
- the method of solidifying the fluid film 52A mainly by a photochemical reaction is suitable for a photocurable resin, for example, a photosensitive resin film such as a photoresist used in a lithography technique.
- the method of solidifying the fluid film 52A mainly by a thermochemical reaction includes a chemically amplified material containing a material that generates an acid or a base by light irradiation and a base resin solidified by an acid or a base. Suitable for an organic film or an organic-inorganic mixed film, or an inorganic film.
- a lower embedded wiring is formed above the interlayer insulating film, and then, a lower embedded wiring and an upper insulating film are formed on the interlayer insulating film.
- a substrate 61 having an interlayer insulating film, an embedded wiring below and an anti-diffusion film is formed on the semiconductor substrate.
- the shape of the substrate 61 is not limited to a planar shape.
- the anti-diffusion film has a function of preventing a metal constituting a lower embedded wiring from diffusing into an insulating film formed on the embedded wiring.
- the spin coating method and the microscopic spraying are performed.
- a liquid or gail-like insulating material having fluidity is supplied over the entire surface of the substrate 61 to form a fluid film 62A having insulating properties by an attaching method, a rotating roller method, or the like.
- the thickness of the fluid membrane 62 A can be set appropriately.
- an insulating film as described in the first embodiment that is, an organic film, an inorganic film, an organic-inorganic mixed film, a porous film, or the like can be used.
- an insulating film having a dielectric constant lower than that of a normal silicon oxide film can be obtained, so that an insulating film suitable for a semiconductor device having fine processing of 100 nm or less can be realized.
- an insulating film having an extremely low dielectric constant of 2 or less can be realized.
- the substrate 61 and thus the fluid film 62A are heated to the first temperature (T1) to cause a thermochemical reaction on the insulating material.
- the fluid film 62A is solidified to form a solidified film 62B having a concave portion.
- a method suitable for the properties of any of the fluid membranes 62A in the first to fourth embodiments may be selected.
- the solidified film 62B is subjected to a second temperature (T 2) higher than the first temperature (T 1). ) To form a pattern 62C formed by firing the solidified film 62B.
- T 2 a second temperature
- the pressing member 63 is detached from the pattern 62C, and the temperature of the pattern 62C is finally reduced.
- room temperature As shown in FIG. 14A, a pattern 62C having a hole-like or groove-like concave part 65 and a flat region excluding the concave part 65 is obtained.
- FIG. 14A a pattern 62C having a hole-like or groove-like concave part 65 and a flat region excluding the concave part 65 is obtained.
- an etch-back process by dry etching is performed on the pattern 62C.
- the concave in pattern 6 2 C Since the remaining portion existing at the bottom of the portion 65 is removed by the etch pack process, a hole or a wiring groove formed by the concave portion 65 is obtained.
- This etch pack treatment is preferably anisotropic dry etching. By doing so, it is possible to minimize the dimensional change of the pattern 62C and to realize a pattern 62C having a good hole or wiring groove shape.
- anisotropic dry etching is performed on the above-mentioned diffusion preventing film (not shown) to form a lower metal wiring (not shown) provided below the diffusion preventing film. ) To expose the top surface.
- the lower metal wiring is exposed in the concave portion 65 formed of a hole or a wiring groove.
- pattern 6 2 made of an insulating film other than the organic film (in which case, a gas containing fluorine such as, for example CF 4 gas or CHF 3 gas, a gas containing fluorine A mixed gas of oxygen gas, ammonia gas, etc. may be used.
- a gas containing fluorine such as, for example CF 4 gas or CHF 3 gas
- Pattern 6 2 composed of an organic film (in that case, a mixed gas of oxygen gas and nitrogen gas, a mixed gas of nitrogen gas and hydrogen gas or Ammonia gas or the like may be used.
- a metal is formed so as to completely fill the concave portion 65 over the pattern 62C in which the concave portion 65 formed of a hole or a wiring groove is formed.
- Deposit film 66A Normally, before depositing the metal film 66A, a barrier metal layer made of Ta or TaN is deposited on the concave portion 65 by sputtering or CVD.
- the metal film 66A is formed by forming a seed (seed) layer by a sputtering method and then depositing the metal film 66A by a plating method using the seed layer as a seed.
- a CVD method may be used instead of the plating method. Copper is usually used for the metal film 66A, but it is preferable to use a metal that can be deposited by plating and has low resistance, such as gold, silver, or platinum, instead of copper.
- the convex portion 64 provided on the pressing surface of the pressing member 63 is a pillar. If the shape is a dot (dot shape), a concave portion 65 composed of a hole is formed in the pattern 62C. If the convex portion 64 is linear, a concave portion 65 composed of a wiring groove is formed in the pattern 62C. By the single damascene method, a plug or an upper metal wiring 66B can be formed in the pattern 62C.
- a multilayer wiring structure having an interlayer insulating film composed of a pattern 62C and a plug or an upper metal wiring 66B in each layer is formed. Can be.
- an interlayer insulating film composed of a pattern 62C having no global step can be formed, local concentration of stress of the film can be reduced. The performance is improved.
- the processing margin can be increased as compared with the conventional case, and a highly accurate semiconductor device can be manufactured.
- the fluid film 62A when a film having a large amount of degassing in the firing step is used as the fluid film 62A, it is more effective to use the firing step of the second embodiment than to use the first embodiment. It is.
- degassing hardly occurs in the baking process because the residual solvent concentration in the membrane can be controlled by prebaking, but heating at a relatively high temperature depends on the membrane composition Degassing may be large in the firing process performed. In such a case, if the firing step of the first embodiment is used, a problem of uniformity or stability occurs in the pattern 62C. Therefore, it is preferable to use the firing step of the second embodiment.
- the firing step of the second embodiment is effective.
- a porous film most of the basic structure of the film is formed in the solidification step, and in the subsequent firing step, the substance for forming pores added to form the pores evaporates.
- the firing step of the second embodiment in which the pressing member 63 is fired in a state where the pressing member 63 is separated from the solidified film 62B is suitable.
- the firing step of the first embodiment is used. Even good Pattern 6 2 C is obtained.
- the heating temperature (first temperature) in the solidification step is about 150 ° C to 300 ° C.
- the heating temperature (second temperature) in the firing step is about 350 ° C to 450 ° C.
- a lower embedded wiring is formed above the interlayer insulating film, and then, a lower embedded wiring and an upper insulating film are formed on the interlayer insulating film.
- a substrate 71 having an interlayer insulating film, an embedded wiring below and an anti-diffusion film is formed on the semiconductor substrate.
- the shape of the substrate 71 is not limited to a planar shape.
- a liquid or liquid is applied over the entire surface of the substrate 71 by a spin coating method, a microscopic spraying method, a rotating roller method, or the like.
- the insulating material having a fluidity in the shape of a jaw is supplied to form a fluid film 72A having an insulating property.
- an insulating film as described in the first embodiment that is, an organic film, an inorganic film, an organic-inorganic mixed film, a porous film, or the like can be used.
- a pressing member 73 having a pressing surface having a convex portion 74 in which dots are scattered on the line is moved to the surface of the fluid film 72A. Then, pressure is applied to the pressing member 73 to transfer the convex portion 74 to the surface of the fluid film 72A to form a concave portion and flatten an area excluding the concave portion.
- the substrate 71 and thus the fluid film 72 A are heated to the first temperature (T 1) to cause a thermochemical reaction on the insulating material.
- T 1 the first temperature
- the fluid film 72A is solidified to form a solidified film 72B having concave portions.
- a method suitable for the properties of any of the fluid membranes 72A in the first to fourth embodiments may be selected.
- the solidified film 7 is formed in the same manner as in the first and second embodiments.
- a pattern 72C formed by firing the solidified film 72 2 is formed.
- the pressing member 73 is detached from the pattern 72C, and the temperature of the pattern 72C is lowered to room temperature. Lower.
- FIG. 16 (a) there is provided a recess 75 composed of a wiring groove 75a and holes 75b scattered below the wiring groove 75a, and the recess 7 A pattern 72 C having a flat region except for 5 is obtained.
- an etch-back process by dry etching is performed on the pattern 72C.
- the remaining portion at the bottom of the concave portion 75 in the pattern 72C is removed by the etch pack process, so that the concave portion 755 in which the wiring groove 75a and the hole 75b are integrated is formed. Is formed.
- anisotropic dry etching is performed on the above-mentioned diffusion preventing film (not shown) to form a lower metal wiring (not shown) provided below the diffusion preventing film. ) To expose the top surface.
- the lower metal wiring is exposed in the concave portion 75 including the wiring groove 75a and the hole 75b.
- a metal film 76A is deposited on the entire surface of the pattern 72C having the concave portions 75 so as to fill the concave portions 75. .
- a barrier metal layer made of Ta or TaN is deposited on the concave portion 75 by a sputtering method or a CVD method.
- the convex portion 74 provided on the pressing surface of the pressing member 73 is formed of a line and a dot
- the pattern 72C has wiring grooves 75a and holes 75b. Since the concave portion 75 is formed, the upper metal wiring 76 B and the plug 76 C can be formed by the dual damascene method.
- each layer has an interlayer insulating film composed of a pattern 72C, an upper metal wiring 76B and a plug 76C.
- a layer wiring structure can be formed.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Formation Of Insulating Films (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04736795A EP1553617A1 (en) | 2003-06-20 | 2004-06-14 | Method for forming pattern and method for manufacturing semiconductor device |
JP2005507249A JP4789620B2 (ja) | 2003-06-20 | 2004-06-14 | パターン形成方法及び半導体装置の製造方法 |
US11/098,371 US7294571B2 (en) | 2003-06-20 | 2005-04-05 | Concave pattern formation method and method for forming semiconductor device |
US11/907,018 US7563709B2 (en) | 2003-06-20 | 2007-10-09 | Pattern formation method and method for forming semiconductor device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003175879 | 2003-06-20 | ||
JP2003-175879 | 2003-06-20 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/098,371 Continuation US7294571B2 (en) | 2003-06-20 | 2005-04-05 | Concave pattern formation method and method for forming semiconductor device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004114382A1 true WO2004114382A1 (ja) | 2004-12-29 |
Family
ID=33534877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/008656 WO2004114382A1 (ja) | 2003-06-20 | 2004-06-14 | パターン形成方法及び半導体装置の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7294571B2 (ja) |
EP (1) | EP1553617A1 (ja) |
JP (1) | JP4789620B2 (ja) |
KR (1) | KR20060004903A (ja) |
CN (1) | CN100442436C (ja) |
TW (1) | TW200507175A (ja) |
WO (1) | WO2004114382A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006310678A (ja) * | 2005-05-02 | 2006-11-09 | Ricoh Opt Ind Co Ltd | 微細表面構造形成用基板、微細表面構造物品の製造方法及びその製造方法で製造された微細表面構造物品 |
JP2007088374A (ja) * | 2005-09-26 | 2007-04-05 | Dainippon Screen Mfg Co Ltd | 半導体装置の製造方法 |
WO2007142088A1 (ja) * | 2006-06-07 | 2007-12-13 | Tokyo Ohka Kogyo Co., Ltd. | ナノインプリントリソグラフィによるレジストパターンの形成方法 |
JP2008542081A (ja) * | 2005-06-10 | 2008-11-27 | オブデュキャット、アクチボラグ | 中間スタンプによるパターン複製 |
JP2009515350A (ja) * | 2005-11-09 | 2009-04-09 | コミサリヤ・ア・レネルジ・アトミク | リソグラフィマスクなどの形状体を搭載する支持体を形成する方法 |
JP2009523312A (ja) * | 2005-09-07 | 2009-06-18 | トッパン、フォウタマスクス、インク | デュアル・ダマシン構造を製造するためのフォトマスクおよびその形成方法 |
JP2009543334A (ja) * | 2006-06-30 | 2009-12-03 | アドバンスト・マイクロ・ディバイシズ・インコーポレイテッド | 位置合せおよびフィーチャの成形に対してフレキシビリティが向上したナノインプリント技術 |
US8043799B2 (en) | 2005-06-07 | 2011-10-25 | Lg Display Co., Ltd. | Soft mold, method of manufacturing the same, and patterning method using the same |
US8295141B2 (en) | 2007-01-12 | 2012-10-23 | Ricoh Company, Ltd. | Pattern and method for forming the same |
JP2020061490A (ja) * | 2018-10-11 | 2020-04-16 | キヤノン株式会社 | 膜形成装置、膜形成方法および物品製造方法 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7658772B2 (en) * | 1997-09-08 | 2010-02-09 | Borealis Technical Limited | Process for making electrode pairs |
WO2003021663A1 (en) * | 2001-09-02 | 2003-03-13 | Borealis Technical Limited | Electrode sandwich separation |
TW200507175A (en) * | 2003-06-20 | 2005-02-16 | Matsushita Electric Ind Co Ltd | Pattern forming method, and manufacturing method for semiconductor device |
WO2008005087A2 (en) * | 2006-06-30 | 2008-01-10 | Advanced Micro Devices, Inc. | A nano imprint technique with increased flexibility with respect to alignment and feature shaping |
US8025829B2 (en) * | 2006-11-28 | 2011-09-27 | Nanonex Corporation | Die imprint by double side force-balanced press for step-and-repeat imprint lithography |
US8460256B2 (en) | 2009-07-15 | 2013-06-11 | Allegiance Corporation | Collapsible fluid collection and disposal system and related methods |
US9889239B2 (en) | 2007-03-23 | 2018-02-13 | Allegiance Corporation | Fluid collection and disposal system and related methods |
JP2010522060A (ja) | 2007-03-23 | 2010-07-01 | アレジアンス、コーポレイション | 交換可能な収集および他の機能を有する流体収集および廃棄システムならびに関連する方法 |
WO2008126313A1 (ja) * | 2007-03-30 | 2008-10-23 | Pioneer Corporation | インプリント用モールドおよびインプリント用モールドの製造方法 |
US8026170B2 (en) * | 2007-09-26 | 2011-09-27 | Sandisk Technologies Inc. | Method of forming a single-layer metal conductors with multiple thicknesses |
US8466068B2 (en) * | 2007-12-31 | 2013-06-18 | Sandisk 3D Llc | Methods and apparatus for forming memory lines and vias in three dimensional memory arrays using dual damascene process and imprint lithography |
US20100301449A1 (en) * | 2007-12-31 | 2010-12-02 | Sandisk 3D Llc | Methods and apparatus for forming line and pillar structures for three dimensional memory arrays using a double subtractive process and imprint lithography |
KR100940169B1 (ko) * | 2008-03-07 | 2010-02-03 | 삼성전기주식회사 | 경화 수지층을 형성하는 인쇄회로기판의 제조방법 |
KR101248862B1 (ko) * | 2009-03-27 | 2013-03-29 | 한양대학교 산학협력단 | 액체 유동층을 매개로 하는 나노 전사 롤 투 롤 인쇄법을 이용한 미세 패턴 형성 방법 |
US8747092B2 (en) | 2010-01-22 | 2014-06-10 | Nanonex Corporation | Fast nanoimprinting apparatus using deformale mold |
CN102673288B (zh) * | 2012-03-16 | 2015-02-25 | 文裕华 | 一种压纹膜的堆积凸纹印刷工艺 |
FR3000598B1 (fr) * | 2012-12-27 | 2016-05-06 | Commissariat Energie Atomique | Procede ameliore de realisation d'une structure de reprise de contact |
US8871639B2 (en) | 2013-01-04 | 2014-10-28 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor devices and methods of manufacture thereof |
US10108086B2 (en) | 2013-03-15 | 2018-10-23 | Nanonex Corporation | System and methods of mold/substrate separation for imprint lithography |
US10105883B2 (en) | 2013-03-15 | 2018-10-23 | Nanonex Corporation | Imprint lithography system and method for manufacturing |
CN109240041B (zh) * | 2018-11-19 | 2020-06-26 | 京东方科技集团股份有限公司 | 拼接式压印模板及其制备方法和母模板 |
JP7414680B2 (ja) * | 2020-09-17 | 2024-01-16 | キオクシア株式会社 | インプリント方法、インプリント装置、及び膜形成装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06267943A (ja) * | 1993-03-15 | 1994-09-22 | Hitachi Ltd | 半導体装置の製造方法 |
JPH07121914A (ja) * | 1993-10-20 | 1995-05-12 | Canon Inc | 光記録媒体用基板シートの製造方法及びそれに用いられるロールスタンパーの製造方法 |
JP2001252927A (ja) * | 2000-03-10 | 2001-09-18 | Nippon Sheet Glass Co Ltd | 所定表面形状を有する物品の製造方法および成形型 |
JP2002158221A (ja) * | 2000-11-17 | 2002-05-31 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
JP2003077807A (ja) * | 2001-09-04 | 2003-03-14 | Matsushita Electric Ind Co Ltd | モールド、モールドの製造方法、および、パターン形成方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5772905A (en) | 1995-11-15 | 1998-06-30 | Regents Of The University Of Minnesota | Nanoimprint lithography |
US6017776A (en) * | 1997-04-29 | 2000-01-25 | Micron Technology, Inc. | Method of attaching a leadframe to singulated semiconductor dice |
JP2000194142A (ja) | 1998-12-25 | 2000-07-14 | Fujitsu Ltd | パタ―ン形成方法及び半導体装置の製造方法 |
US6660362B1 (en) * | 2000-11-03 | 2003-12-09 | Kimberly-Clark Worldwide, Inc. | Deflection members for tissue production |
PL206698B1 (pl) * | 2002-11-11 | 2010-09-30 | Sig Technology Ltd | Zamknięcie zawiasowe z zabezpieczeniem gwarancyjnym dla uszczelnionych powłoką butelek i pojemników z zawartością płynną |
KR100496259B1 (ko) * | 2003-02-17 | 2005-06-17 | 삼성전자주식회사 | 다마신 공정을 이용한 배선 및 그 형성 방법, 이를포함하는 반도체 소자 및 그 제조 방법 |
TW200507175A (en) * | 2003-06-20 | 2005-02-16 | Matsushita Electric Ind Co Ltd | Pattern forming method, and manufacturing method for semiconductor device |
TW200503167A (en) * | 2003-06-20 | 2005-01-16 | Matsushita Electric Ind Co Ltd | Manufacturing method of semiconductor device |
US20050191860A1 (en) * | 2003-06-20 | 2005-09-01 | Matsushita Electric Industrial Co., Ltd. | Method for forming semiconductor device |
-
2004
- 2004-05-07 TW TW093112950A patent/TW200507175A/zh unknown
- 2004-06-14 CN CNB2004800005832A patent/CN100442436C/zh not_active Expired - Fee Related
- 2004-06-14 WO PCT/JP2004/008656 patent/WO2004114382A1/ja active Application Filing
- 2004-06-14 KR KR1020057002890A patent/KR20060004903A/ko not_active Application Discontinuation
- 2004-06-14 EP EP04736795A patent/EP1553617A1/en not_active Withdrawn
- 2004-06-14 JP JP2005507249A patent/JP4789620B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-05 US US11/098,371 patent/US7294571B2/en not_active Expired - Fee Related
-
2007
- 2007-10-09 US US11/907,018 patent/US7563709B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06267943A (ja) * | 1993-03-15 | 1994-09-22 | Hitachi Ltd | 半導体装置の製造方法 |
JPH07121914A (ja) * | 1993-10-20 | 1995-05-12 | Canon Inc | 光記録媒体用基板シートの製造方法及びそれに用いられるロールスタンパーの製造方法 |
JP2001252927A (ja) * | 2000-03-10 | 2001-09-18 | Nippon Sheet Glass Co Ltd | 所定表面形状を有する物品の製造方法および成形型 |
JP2002158221A (ja) * | 2000-11-17 | 2002-05-31 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
JP2003077807A (ja) * | 2001-09-04 | 2003-03-14 | Matsushita Electric Ind Co Ltd | モールド、モールドの製造方法、および、パターン形成方法 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006310678A (ja) * | 2005-05-02 | 2006-11-09 | Ricoh Opt Ind Co Ltd | 微細表面構造形成用基板、微細表面構造物品の製造方法及びその製造方法で製造された微細表面構造物品 |
US8043799B2 (en) | 2005-06-07 | 2011-10-25 | Lg Display Co., Ltd. | Soft mold, method of manufacturing the same, and patterning method using the same |
KR101107474B1 (ko) * | 2005-06-07 | 2012-01-19 | 엘지디스플레이 주식회사 | 소프트몰드와 이를 이용한 패턴방법 |
JP2008542081A (ja) * | 2005-06-10 | 2008-11-27 | オブデュキャット、アクチボラグ | 中間スタンプによるパターン複製 |
JP2009523312A (ja) * | 2005-09-07 | 2009-06-18 | トッパン、フォウタマスクス、インク | デュアル・ダマシン構造を製造するためのフォトマスクおよびその形成方法 |
JP2007088374A (ja) * | 2005-09-26 | 2007-04-05 | Dainippon Screen Mfg Co Ltd | 半導体装置の製造方法 |
JP2009515350A (ja) * | 2005-11-09 | 2009-04-09 | コミサリヤ・ア・レネルジ・アトミク | リソグラフィマスクなどの形状体を搭載する支持体を形成する方法 |
US8828304B2 (en) | 2006-06-07 | 2014-09-09 | Tokyo Ohka Kogyo Co., Ltd. | Method of forming resist pattern by nanoimprint lithography |
WO2007142088A1 (ja) * | 2006-06-07 | 2007-12-13 | Tokyo Ohka Kogyo Co., Ltd. | ナノインプリントリソグラフィによるレジストパターンの形成方法 |
JP2009543334A (ja) * | 2006-06-30 | 2009-12-03 | アドバンスト・マイクロ・ディバイシズ・インコーポレイテッド | 位置合せおよびフィーチャの成形に対してフレキシビリティが向上したナノインプリント技術 |
US8295141B2 (en) | 2007-01-12 | 2012-10-23 | Ricoh Company, Ltd. | Pattern and method for forming the same |
JP2020061490A (ja) * | 2018-10-11 | 2020-04-16 | キヤノン株式会社 | 膜形成装置、膜形成方法および物品製造方法 |
JP7299685B2 (ja) | 2018-10-11 | 2023-06-28 | キヤノン株式会社 | 膜形成装置、膜形成方法および物品製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN100442436C (zh) | 2008-12-10 |
TW200507175A (en) | 2005-02-16 |
US20050170269A1 (en) | 2005-08-04 |
CN1698181A (zh) | 2005-11-16 |
US20080045005A1 (en) | 2008-02-21 |
US7294571B2 (en) | 2007-11-13 |
EP1553617A1 (en) | 2005-07-13 |
KR20060004903A (ko) | 2006-01-16 |
US7563709B2 (en) | 2009-07-21 |
JPWO2004114382A1 (ja) | 2006-08-03 |
JP4789620B2 (ja) | 2011-10-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004114382A1 (ja) | パターン形成方法及び半導体装置の製造方法 | |
US7837459B2 (en) | Method for fabricating dual damascene structures using photo-imprint lithography, methods for fabricating imprint lithography molds for dual damascene structures, materials for imprintable dielectrics and equipment for photo-imprint lithography used in dual damascene patterning | |
US20070202666A1 (en) | Method for fabricating semiconductor device | |
US6797607B2 (en) | Contact planarization using nanoporous silica materials | |
US7455955B2 (en) | Planarization method for multi-layer lithography processing | |
WO2004114381A1 (ja) | 半導体装置の製造方法 | |
KR20180116438A (ko) | 사전패터닝된 리소그래피 템플레이트, 상기 템플레이트를 이용한 방사선 패터닝에 기초한 방법 및 상기 템플레이트를 형성하기 위한 방법 | |
US20060261518A1 (en) | Use of step and flash imprint lithography for direct imprinting of dielectric materials for dual damascene processing | |
US20100308015A1 (en) | Superfine-patterned mask, method for production thereof, and method employing the same for forming superfine-pattern | |
US7598172B2 (en) | Method for manufacturing semiconductor device by using dual damascene process and method for manufacturing article having communicating hole | |
US7105452B2 (en) | Method of planarizing a semiconductor substrate with an etching chemistry | |
WO2004114388A1 (ja) | 半導体装置の製造方法 | |
TWI775968B (zh) | 半導體裝置之製造方法 | |
US20050191860A1 (en) | Method for forming semiconductor device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2005507249 Country of ref document: JP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048005832 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057002890 Country of ref document: KR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004736795 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11098371 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2004736795 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057002890 Country of ref document: KR |