WO1998021750A1 - Procede d'aplanissement d'un substrat, et procede de fabrication de substrats recouverts d'un film et de dispositifs a semi-conducteur - Google Patents
Procede d'aplanissement d'un substrat, et procede de fabrication de substrats recouverts d'un film et de dispositifs a semi-conducteur Download PDFInfo
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- WO1998021750A1 WO1998021750A1 PCT/JP1997/003979 JP9703979W WO9821750A1 WO 1998021750 A1 WO1998021750 A1 WO 1998021750A1 JP 9703979 W JP9703979 W JP 9703979W WO 9821750 A1 WO9821750 A1 WO 9821750A1
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- coating
- substrate
- silica
- film
- spherical fine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
- B05D1/286—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers using a temporary backing to which the coating has been applied
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02282—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process liquid deposition, e.g. spin-coating, sol-gel techniques, spray coating
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/32055—Deposition of semiconductive layers, e.g. poly - or amorphous silicon layers
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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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
- H01L21/70—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
- H01L21/76819—Smoothing of the dielectric
Definitions
- the present invention relates to a method for planarizing a substrate surface and a substrate with a coating, and more particularly, to a method for forming a coating on a concave-convex surface of a substrate having an uneven surface such as a semiconductor substrate to planarize the substrate.
- the present invention relates to a method for performing a method, a substrate with a film planarized by the method, and a method for manufacturing a semiconductor device using the method.
- the S0G method is a method in which an SOG material composed of a coating solution containing an alkoxysilane such as Si (4R) 4 is applied to the surface of an uneven substrate, and then heated and cured to form a flattened film.
- SOG materials are not limited to the above-mentioned alkoxysilanes. Have been proposed.
- the etch-back method has a problem that dust is generated because the resist and the insulating film are simultaneously etched. For this reason, it is not an easy technology in terms of dust management.
- the lift-off method is not practical because the stencil material used does not completely dissolve at the time of lift-off, causing problems such as inability to lift-off, and insufficient controllability and yield. It has not been converted.
- the present invention has been made in view of the above circumstances, and provides a method for easily flattening an uneven surface of a substrate having an uneven surface, a coated substrate having excellent flatness and a uniform film thickness, and a semiconductor.
- the purpose is to provide a method for manufacturing the device. Disclosure of the invention
- the method is characterized in that the spherical fine particle-containing coating is transferred onto an uneven surface of a substrate having an uneven surface, and the uneven surface is flattened.
- a coating liquid for forming a coating may be applied to form a coating containing spherical fine particles.
- a fine particle-containing coating may be formed.
- the spherical fine particle-containing coating is heated to melt at least a part of the coating, thereby flattening the coating surface
- the temperature may be further increased to cure the spherical fine particle-containing coating, thereby flattening the uneven surface.
- the spherical fine particles are fine silica particles and the coating is a fine silicon film.
- the silica-based coating is preferably formed from a coating solution for forming a silica-based coating containing polysilazane having a repeating unit represented by the following general formula [1].
- RR 2 and R 3 may be the same or different and each is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or an alkoxy group, and n is an integer of 1 or more. It is.
- the substrate with a coating according to the present invention is characterized in that the surface is flattened by the above method.
- the method of manufacturing a semiconductor device includes the steps of: After forming the silica-based coating containing particles, the silica-based coating containing silica fine particles is transferred to the surface of the semiconductor substrate to form the silica-based coating containing semiconductor fine particles on the surface of the semiconductor substrate. It is characterized in that the silicon-based coating is formed from a coating solution for forming a silica-based coating containing polysilazane having a repeating unit represented by the general formula [1].
- FIG. 1 is a cross-sectional view illustrating a method for planarizing a substrate according to a preferred embodiment of the present invention
- FIG. 2 is a semiconductor device according to a preferred embodiment of the present invention
- FIG. 4 is a cross-sectional view showing the steps of the manufacture in order.
- a coating containing spherical fine particles is formed on a smooth substrate surface.
- spherical fine particles examples include spherical fine particles made of an inorganic compound such as silica and alumina, and spherical fine particles made of a synthetic resin such as polystyrene and methyl methacrylate. Of these, silica fine particles are particularly preferred.
- Such spherical fine particles preferably have an average particle size of lm or less, preferably 0.5 m or less, and have a single particle size range or a mixture of two or more different particle sizes. May be done.
- the spherical fine particles function as a gap control material between the smooth substrate surface and the uneven surface of the uneven substrate, and the transferred film thickness is uniform. And the flatness of the coating can be improved.
- these spherical fine particles have a function of controlling the adhesion and releasability between the smooth substrate and the coating when forming the coating on the smooth substrate, the transfer characteristics of the coating are improved.
- a silica-based film As the film formed on the smooth substrate surface, a silica-based film is preferable, and such a silica-based film can be obtained by smoothing a coating solution for forming a film containing a silica-based film-forming component. It can be formed by coating on the substrate surface.
- film-forming component viscosity in the range C has a 1 0 3 voice hereinafter become such re off port one property.
- the reflow property as defined in the present invention means that when a coating liquid for forming a film is applied to a substrate, and the dried and once solidified film is heated, the viscosity decreases as the heating temperature increases, It means re-melting. If the temperature is further increased after re-melting, the polymerization of the film components proceeds, and the film hardens.
- Examples of such a film-forming component having reflow properties include polysilazane having a repeating unit represented by the following general formula [1] and polycarbosilane having a repeating unit represented by the following general formula [2]. Or silsesquioxane having a repeating unit represented by the following general formula [3] '. Of these, polysilazane is particularly preferred.
- R formula, R ⁇ R Z. R 3 is rather good even being the same or different, a hydrogen atom, an alkyl group, ⁇ Li Lumpur group or an alkoxy group having 1 to 8 carbon atoms, n Is an integer greater than or equal to 1.
- R 4 and R 5 may be the same or different and represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, an aryl group or an alkoxy group.
- R 6 represents a substituted or unsubstituted methylene group, and m is an integer of 1 or more.
- R 7 and R 8 may be the same or different and each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, an aryl group or an alkoxy group.
- 1 is an integer of 1 or more.
- the number average molecular weight of the polysilazane, polyrubosilane or silsesquioxane as described above is preferably from 500 to 500, preferably 100 to 100,000.
- the coating solution for forming a film used in the present invention is prepared by dissolving the above-mentioned film forming component in an organic solvent at a solid content concentration of 5 to 50% by weight, preferably 10 to 30% by weight.
- the organic solvent is not particularly limited as long as it can disperse or dissolve the above-mentioned film-forming components and can impart fluidity as a coating solution, but aromatic hydrocarbons such as toluene and xylene, Halogenated hydrocarbons, such as
- the coating liquid for forming a film as described above is applied to the surface of the smooth substrate to be coated by a spray method, a spinner method, a dive method, a roll coating method, a screen printing method, a transfer printing method.
- the film can be heated at 50 or more and dried to form a film. If the heating temperature is 50 ° C or higher, the solvent remains in the coating and no bubbles are generated during transfer. On the other hand, if the heating temperature is too high, the cross-linking reaction of the film-forming component proceeds and the reflow property of the film deteriorates, so that it may be difficult to transfer the film to the uneven substrate or to flatten the obtained film. . Therefore, it is desirable that the heating temperature be 300 ° C. or less, preferably 200 ° C. or less.
- the thickness of the formed film is usually 0.3 to 5 / m, preferably 0.5 to 2 m.
- a spherical fine particle layer is previously formed on the surface of the smooth base material, and a coating liquid for forming a film is applied on the spherical fine particle layer.
- the spherical fine particles may be included in the coating film, or the spherical fine particles may be included in the coating film by applying the coating liquid for forming the coating film containing the spherical fine particles on the smooth base material surface. .
- the method for previously forming the spherical fine particle layer on the smooth base material is not particularly limited, but usually, a dispersion in which the spherical fine particles are dispersed in a dispersion medium is applied to a smooth base material by a spinner method or the like, and then dried. This forms a fine particle layer.
- a dispersion medium include water, alcohols, ketones, and ethers.
- the coating liquid for forming a film contains spherical fine particles
- a spherical fine particle-containing coating can be formed simply by directly applying a coating liquid for forming a film in which the spherical fine particles are dispersed to the smooth base material.
- the spherical fine particles are preferably contained in the coating solution for forming a film in an amount of 2 to 50% by weight, preferably 5 to 20% by weight in terms of solid content.
- the smooth base material used in the present invention is not particularly limited as long as the surface is smooth, and a sheet film made of a flexible thermoplastic resin or the like is usually used.
- a sheet film made of a flexible thermoplastic resin or the like include an acrylic resin, a polycarbonate resin, a polyolefin resin, a vinyl chloride resin, a polyamide resin, a polyamide resin, and a fluorine resin.
- a sheet film of polyimide resin or fluororesin is preferred in terms of heat resistance.
- the film-forming surface of the smooth base material and the uneven surface of the uneven base material are attached to each other, and the back surface of either base material or both back surfaces is, for example, 1 to 50 kg, preferably 1 to 50 kg. Apply a load with a load of ⁇ 10 kg, or press the roller while rolling to make it adhere. Thereafter, the smooth substrate is peeled off, and the coating is transferred to the uneven surface. When or after the coating is transferred to the uneven surface of the substrate having the uneven surface, the coating is heated to at least one time. Melt the part The surface of the spherical fine particle-containing coating may be flattened.
- Coating comprising silica Ca-based film forming component as described above may have a reflow property as described above, to Oko viscosity decrease of about 1 0 0 ° C or higher, remelting (reflow) to c the viscosity The decrease continues to about 250 at about 300 and begins to harden at about 300 above due to molecular crosslinking. Utilizing such reflow properties, heating at 50 ° C or more, preferably 80 ° C or more during crimping to reduce the viscosity of the silicon-based film and perform transfer, The coating reflows and is spread by the load and heating, and the uneven substrate surface can be highly flattened.
- thermocompression bonding it is also possible to heat after transferring under pressure to flatten the surface of the uneven substrate.
- the film transferred in this way is kept at a temperature of 300-500 ° C., preferably 400-450 ° C., for 10-120 minutes, preferably 30-500 ° C. Heat for 60 minutes to cure.
- Such curing is typically performed in air, water vapor or ammonia.
- the spherical fine particles may be melted or decomposed during the heating and curing of the film as described above, and the spherical form may disappear.
- the coating contains spherical fine particles at the time of transfer.
- a spherical fine particle layer 2 is formed on the surface of a sheet film (smooth substrate) 1.
- the above-mentioned coating liquid for forming a film is applied on the above-mentioned spherical fine particle layer 2 by ordinary means, and then heated to 50 ° C. or more, and the sheet is heated.
- a film 3 including a spherical fine particle layer is formed on the film.
- the surface on which the spherical fine particle-containing coating obtained as described above is formed and the uneven surface 5 of the substrate 4 having the uneven surface are opposed to each other. And stick them together.
- the film 3 is heated to 80 to 150 ° C., and the spherical fine particle-containing coating 3 of the sheet film 1 is transferred to the uneven surface 5.
- the uneven surface 4 on which the spherical fine particle-containing coating 3 was transferred was heated to about 400 ° C. to perform a curing treatment, and the spherical fine particle-containing coating 3 having a flattened surface as shown in FIG. 1 (d) was obtained. A formed substrate is obtained.
- the unevenness on the surface of the substrate is flattened by the coating formed by the above method.
- any irregular substrate capable of forming a film by the method described above can be used.
- a transparent electrode plate with a TFT for a liquid crystal display device an insulating film is formed on the substrate surface where the TFT (Thin Film Transistor) protrudes, and the step between the substrate surface and the TFT portion is flattened. .
- a film is formed on the pixel electrode of the electrode plate and on the color filter of the counter electrode plate, and the unevenness formed by the pixel electrode and the color filter The surface is flattened by the spherical fine particle-containing coating.
- a silica-based insulating film is formed between a semiconductor substrate and a metal wiring layer or between metal wiring layers. With this insulating film, the uneven surface formed by the PN junction semiconductor provided on the semiconductor substrate and various elements such as a capacitor element and a resistance element is flattened.
- Such a semiconductor device is manufactured by the following method.
- the method for manufacturing a semiconductor device according to the present invention includes:
- the silica-based coating By forming a silica-based coating containing silica fine particles on the smooth substrate surface and transferring the silica-based coating to the semiconductor substrate surface, a silicon substrate having good flatness is formed on the semiconductor substrate surface. A mosquito coating is formed. At this time, the silica-based coating is formed from a coating solution for forming a silica-based coating containing polysilazane having a repeating unit represented by the general formula [1].
- a silica fine particle layer 7 is formed on the surface of a sheet film (smooth base material) 1.
- the coating solution for forming a silica-based film After applying the coating solution for forming a silica-based film by a spinner method or the like, the coating solution is heated to 50 ° C. or more to form a silica containing a silica fine particle layer on a sheet film. A system coating 8 is formed.
- the silica-based film-forming surface and the wiring layer 10 between two flat plates 11 such as quartz plates so as to face each other.
- a load is applied from the sheet film 1 side or the semiconductor substrate 9 side, or both, and then heated to 80 to 200 ° C in a heat sink 12 and the sheet film is heated.
- the silica coating 8 of the lum 1 is transferred to the wiring layer 10.
- the wiring layer 10 to which the solder film 8 was transferred was heated to about 400 to perform a hardening treatment, and the surface became flat as shown in FIG. 2 (e).
- a semiconductor device having the silica-based coating 8 containing silica fine particles is obtained.
- silica fine particles having different particle diameters may be used as silica fine particles.
- a film as shown in Fig. 2 (f) is formed on the semiconductor surface.
- the spherical fine particles contained in the coating film during the transfer step perform the function of adjusting the gap between the smooth base material and the uneven base material, a flattened film having a uniform thickness can be formed. Can be. Also contains spherical fine particles This makes it possible to control the adhesion of the coating to the smooth base material and the releasability from the smooth base material, so that the transfer to the uneven base material can be performed smoothly.
- a film having a high degree of flatness is transferred by utilizing the reflow characteristics. It can be formed on the uneven substrate surface.
- a flattening film having a uniform thickness can be formed on a large-diameter semiconductor substrate.
- a coating solution for forming a silica-based film containing polycarbosilane (solvent: methyl isoptyl ketone, SiO 2 concentration: 25 wt%, manufactured by Nippon Riki-I-Bide Co., Ltd.) was used.
- a 1 m-thick silica fine particle-containing silica coating is applied on the layer by spinner method (2000 rpm, 20 seconds) and dried on a hot plate at 120 ° C for 3 minutes.
- a coating was formed.
- a load of 5 kg was applied from the top of the flat plate, and the plate was heated at 150 for 10 minutes to transfer the coating and flatten. Thereafter, the sheet film was removed, and the silica substrate having the transferred film was subjected to a heat curing treatment at 400 ° C. for 30 minutes in a steam atmosphere.
- the viscosity of the silicic coating at 150 ° C. was 15 boise.
- the obtained silica-based coating containing silica fine particles had a thickness of 0.5 zm on the step, and as a result of observing the cross section of the coating with an electron microscope, it was found to have good flatness.
- Example 2 The same method as in Example 1 was used except that a mixture of fine particles having an average particle diameter of 0.5 ⁇ m and fine particles having a diameter of 0.1 ⁇ m in a ratio of 1: 1 (weight ratio) was used as the silica fine particles. A coating was formed on a silica substrate.
- the obtained silica-based coating containing silica fine particles had a thickness of 0.5 / m on the step, and as a result of observing the cross section of the coating with an electron microscope, it was found to have good flatness.
- the obtained coating was treated in the same manner as in Example 1.
- the obtained silica-based coating containing silica fine particles had a thickness of 0.5 m on the step, and as a result of observing the cross section of the coating with an electron microscope, it was found to have good flatness.
- silica mosquitoes based film-forming coating liquid containing inorganic poly silazane (Se Ramee bets - CIP Si0 2 concentration:. 24 wt%, by Catalysts & Chemicals Industries Co., Ltd.)
- One method spinner on a silica mosquito fine particle layer ( The coating was performed at 2000 rpm for 20 seconds) and dried on a hot plate at 120 ° C for 3 minutes to form a silica-based silica-based coating with a film thickness of 0.4 / m.
- silica-based coating containing silica fine particles had a thickness of 0.2 m on the step, and as a result of observing the cross section of the coating with an electron microscope, it was found to have good flatness.
- Li Ca-based film-forming coating liquid containing inorganic poly silazane (Se ra over bets - CIP, Si0 2 concentration: 24 wt%, by Catalysts & Chemicals Industries Co., Ltd.) on the sheet re mosquito fine particle layer It was applied by a spinner method (2000 rpm, 20 seconds) and dried on a hot plate at 120 ° C for 3 minutes to form a 0.6- ⁇ m-thick silica particle-containing film.
- the semiconductor substrate having the A1 wiring and the above-mentioned sheet film were attached to each other with the A1 wiring side and the film formation side facing each other, and were arranged between two flat plates.
- a load of 5 kg was applied from above the flat plate and heated at 150 ° C for 10 minutes to transfer the film. Thereafter, the sheet film was peeled off, and the silica substrate having the transferred film was heated and hardened at 400 ° C. for 30 minutes in a steam atmosphere.
- the silica-based coating containing silica particles formed on the semiconductor substrate has a thickness of 0.3 m on the A1 wiring, and the cross section of the coating was observed with an electron microscope. Was.
- Example 5 Same as Example 5 except that a mixture of fine particles having an average particle diameter of 0.3 m and fine particles of 0.1 m in a ratio of 1: 1 (weight ratio) was used as the silica fine particles.
- a silica-based film was formed on a silica substrate by the method described above.
- a coating liquid for forming a silica-based film containing inorganic polysilazane (S Ra one DOO-CIP, Si0 2 concentration: 30 wt%, by Catalysts & Chemicals Industries Co., Ltd.) was re mosquito scan Pina of the Act on the fine particle layer (coated with LOOOrpm, 20 seconds), hot Topure Bok on By drying at 120 ° C for 3 minutes at room temperature, a silica fine particle-containing film having a film thickness of 1 m was formed.
- the obtained silica-based coating containing silica fine particles was transferred onto a semiconductor substrate in the same manner as in Example 5 and subjected to a curing treatment.
- the silica-based coating containing silica fine particles formed on the semiconductor substrate has a thickness of 0.5 m on the A1 wiring.As a result of observing the cross section of the coating with an electron microscope, it was found that the flatness was good. Had.
- silica-based film containing inorganic polysilazane in which 30% by weight of silica fine particles with an average particle diameter of 0.3 m are dispersed on a sheet film on which a fine particle layer is not formed.
- coating solution (Serra menu over bets - CIP, Si0 2 concentration: 24w t%, by catalysts & Chemicals Industries Co., Ltd.) spinner - applied by law (2000 rpm, 20 seconds) - on hot Topure DOO 120 ° C, 3 After drying for a minute, a silica fine particle-containing coating having a thickness of 0.6 m was formed.
- the obtained silica-based coating containing silica fine particles was transferred onto a semiconductor substrate in the same manner as in Example 5 and subjected to a curing treatment.
- the silica-based coating containing silica fine particles formed on the semiconductor substrate had a thickness of 0.3 m on the A1 wiring, and the cross section of the coating was observed with an electron microscope. Had.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/297,343 US6340641B1 (en) | 1996-11-11 | 1997-10-31 | Substrate flattening method and film-coated substrate made thereby |
EP97909715A EP0951057B1 (en) | 1996-11-11 | 1997-10-31 | Substrate flattening method |
DE69728999T DE69728999T2 (de) | 1996-11-11 | 1997-10-31 | Substratglättungsverfahren |
JP52237098A JP3420590B2 (ja) | 1996-11-11 | 1997-10-31 | 基材の平坦化方法、被膜付基材および半導体装置の製造方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/298892 | 1996-11-11 | ||
JP29889296 | 1996-11-11 | ||
JP30842796 | 1996-11-19 | ||
JP8/308427 | 1996-11-19 |
Publications (1)
Publication Number | Publication Date |
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WO1998021750A1 true WO1998021750A1 (fr) | 1998-05-22 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1997/003979 WO1998021750A1 (fr) | 1996-11-11 | 1997-10-31 | Procede d'aplanissement d'un substrat, et procede de fabrication de substrats recouverts d'un film et de dispositifs a semi-conducteur |
Country Status (7)
Country | Link |
---|---|
US (1) | US6340641B1 (ja) |
EP (1) | EP0951057B1 (ja) |
JP (1) | JP3420590B2 (ja) |
KR (1) | KR100342575B1 (ja) |
DE (1) | DE69728999T2 (ja) |
TW (1) | TW529094B (ja) |
WO (1) | WO1998021750A1 (ja) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003163337A (ja) * | 2001-08-10 | 2003-06-06 | Semiconductor Energy Lab Co Ltd | 剥離方法および半導体装置の作製方法 |
JP2003174153A (ja) * | 2001-07-16 | 2003-06-20 | Semiconductor Energy Lab Co Ltd | 剥離方法および半導体装置の作製方法、および半導体装置 |
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Also Published As
Publication number | Publication date |
---|---|
KR100342575B1 (ko) | 2002-07-04 |
JP3420590B2 (ja) | 2003-06-23 |
EP0951057A1 (en) | 1999-10-20 |
DE69728999T2 (de) | 2005-04-28 |
DE69728999D1 (de) | 2004-06-09 |
US6340641B1 (en) | 2002-01-22 |
TW529094B (en) | 2003-04-21 |
EP0951057A4 (en) | 2000-04-05 |
EP0951057B1 (en) | 2004-05-06 |
KR20000053183A (ko) | 2000-08-25 |
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