WO2004079819A1 - トレンチ・アイソレーション構造の形成方法 - Google Patents
トレンチ・アイソレーション構造の形成方法 Download PDFInfo
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- WO2004079819A1 WO2004079819A1 PCT/JP2004/002638 JP2004002638W WO2004079819A1 WO 2004079819 A1 WO2004079819 A1 WO 2004079819A1 JP 2004002638 W JP2004002638 W JP 2004002638W WO 2004079819 A1 WO2004079819 A1 WO 2004079819A1
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- WIPO (PCT)
- Prior art keywords
- trench
- temperature
- polysilazane
- polishing
- silicon dioxide
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Classifications
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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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
-
- 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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
Definitions
- Patent application title Method of forming trench isolation structure
- the present invention relates to a method for forming a trench isolation structure in an electronic device. More specifically, the present invention relates to a method for forming a trench isolation structure formed for insulation in an electronic device using polysilazane in the manufacture of an electronic device such as a semiconductor device.
- Background art
- an electronic device such as a semiconductor device
- semiconductor elements for example, a transistor, a resistor, and others are arranged on a substrate, but they need to be electrically insulated. Therefore, a region for isolating the devices is required between these devices, and this region is called an isolation region.
- this isolation region is generally formed by selectively forming an insulating film on the surface of a semiconductor substrate.
- a fine isolation structure that meets the required integration, and a new isolation that meets such needs.
- Structure is required.
- One such example is a trench 'isolation structure.
- a fine groove is formed on the surface of a semiconductor substrate, an insulator is filled in the groove, and elements formed on both sides of the groove are electrically separated.
- Such a structure for device isolation is an effective device isolation structure for achieving the recently required high degree of integration because the isolation region can be narrowed as compared with the conventional method.
- Examples include a CVD method and a high-density plasma CVD method (see, for example, paragraphs 02005 to 0016 of Japanese Patent No. 3178412).
- CVD method a high-density plasma CVD method
- voids were formed in the grooves or the shape of the grooves formed in the substrate changed. These structural defects can impair the physical strength and insulation properties of the substrate.
- the present invention provides a trench having no structural defects, for example, has a very small volume shrinkage even when the trench width is extremely narrow, and preferably has no volume shrinkage. ⁇ It is intended to provide a method of forming an isolation structure.
- a first method for forming a trench isolation structure according to the present invention includes: a groove forming step of forming a trench / isolation groove on a silicon substrate; and applying a polysilazane solution in which polysilazane is dissolved in an organic solvent to the substrate. To form a polysilazane coating,
- Pre-bake process which is controlled to rise over time in a temperature range of 50 ° ( ⁇ 400 ° C)
- the pre-baked substrate is treated in an atmosphere of inert gas or oxygen with a water vapor concentration of 1% or more and at a temperature of not less than the maximum pre-bake temperature and not more than 1000 ° C to convert the polysilazane film to a silicon dioxide film.
- a second method for forming a trench 'isolation structure includes: a trench forming step of forming a trench / isolation trench on a silicon substrate; and a polysilazane solution in which polysilazane is dissolved in an organic solvent. Coating process to form a polysilazane film, coating process,
- a pre-baking process which is controlled to rise over time in a temperature range of 50 ° C to 400 ° C,
- the pre-baked substrate is treated in an atmosphere of inert gas or oxygen with a water vapor concentration of 1% or more and at a temperature of not less than the maximum pre-bake temperature and not more than 100 ° C to convert the polysilazane film to a silicon dioxide film.
- One embodiment of the method according to the invention comprises the steps of: This is to form an isolation structure.
- a trench / isolation groove is formed in a silicon substrate.
- An arbitrary method can be used for forming the groove, and is described in, for example, Japanese Patent Application No. 3178412 or Japanese Patent Application Laid-Open No. 2001-308090. The specific method is as shown below.
- a silicon dioxide film is formed on the surface of a silicon substrate by, for example, a thermal oxidation method.
- the thickness of the silicon dioxide film formed here is generally 5 to 30 nm.
- a silicon nitride film is formed on the formed silicon dioxide film by, for example, a low pressure CVD method. This silicon nitride film can function as a mask in a later etching step or a stop layer in a polishing step described later. When formed, the silicon nitride film is generally formed to a thickness of 100 to 400 nm.
- a photoresist is applied on the silicon dioxide film or silicon nitride film thus formed. After the photoresist film is dried or cured as required, it is exposed and developed with a desired pattern to form a pattern. Exposure can be performed by any method such as mask exposure and scanning exposure. Also, any photoresist can be selected and used from the viewpoint of resolution and the like.
- the silicon nitride film and the underlying silicon dioxide film are sequentially etched. By this operation, a desired pattern is formed on the silicon nitride film and the silicon dioxide film.
- the width of the formed trench / isolation groove is determined by the pattern for exposing the photoresist film.
- Trench in semiconductor device The isolation groove varies depending on the target semiconductor device, but generally has a width of 0.02 to 10 m, preferably 0.05 to 5 m, and a depth of 200 to: L 000 nm, preferably 300-700 nm. Since the method according to the present invention can be buried even more narrowly and deeper than the conventional method of forming a trench isolation structure, a narrower and deeper trench isolation can be achieved. It is suitable for forming a structure.
- a polysilicon film can be further formed on the surface of the substrate having the groove by a CVD method or the like.
- This polysilicon film is converted into a silicon dioxide film during (a) a hardening process or an annealing process (details described later), and the volume expansion generated at that time causes stress generated between the trenches when polysilazane is converted to silicon dioxide. And has the function of improving the adhesion between the polysilazane film and the substrate.
- the thickness of the polysilicon film to be formed is usually 1 to 50 nm, preferably 3 to 20 nm when it is formed.
- a polysilazane coating film is formed on the silicon substrate having a groove formed on the surface by the above-described groove forming step.
- the polysilazane that can be used in the method of the present invention is not particularly limited, and those described in Japanese Patent No. 3178412 or Japanese Patent Application Laid-Open No. 2001-308090 can be used.
- An example of a method for preparing a polysilazane solution that can be used is as follows.
- the temperature is adjusted to a temperature of 20 to 20 ° C, and ammonia with a purity of 99% or more is injected with stirring.
- the reaction solution contains crude polysilazane and by-products. Ammonia chloride is formed.
- the ammonium chloride produced by the reaction is removed by filtration.
- the filtrate is heated to 30 to 150 ° C and the molecular weight of polysilazane is adjusted to be in the range of 150 to 1500 by removing the remaining ammonia. Do.
- Organic solvents that can be used include (ii) aromatic conjugates such as benzene, toluene, xylene, ethylbenzene, getylbenzene, trimethylbenzene, triethylbenzene, and decahydronaphthylene, (mouth) linear saturated hydrocarbons, For example, n-pentane, i-pentane, n-hexane, i-hexane, n-heppu, i_heppu, n-year, i-one, n-nonan, i- Nonane, n-decane, and i-decane; (c) cyclic saturated hydrocarbons such as cyclohexane, ethylcyclohexane, methylcyclohexane, and P-ment
- the pyridine is removed by distillation under reduced pressure, and the organic solvent is also removed at the same time, so that the polysilazane concentration is generally adjusted within the range of 5 to 30% by weight.
- the obtained polysilazane solution is circulated and filtered using a filter having a filtration accuracy of 0.1 zm or less to reduce coarse particles having a particle size of 0.2 ⁇ m or more to 50 particles / cc or less.
- the above-described method for preparing the polysilazane solution is merely an example, and is not particularly limited to this method.
- Polysilazane in a solid state can be obtained and used by dissolving or dispersing it in the above-mentioned appropriate solvent at a concentration of generally 5 to 30% by weight.
- concentration of the solution should be appropriately adjusted according to the thickness of the polysilazane coating film to be finally formed.
- the prepared polysilazane solution can be applied on a substrate by any method.
- Specific examples include spin coating, force coating, deep coating, and others. Of these, spin coating is particularly preferred from the viewpoint of uniformity of the coating surface.
- the thickness of the applied polysilazane coating film is determined by the thickness of the entire trench and isolation groove formed in the groove forming step in order to achieve both the trench groove burying property after the polysilazane solution application and the flatness of the polysilazane coating film surface. That is, it is preferable that the thickness be in the range of 0.8 to 2 times the total thickness of the silicon substrate, the silicon dioxide film, and the silicon nitride film.
- the application conditions vary depending on the concentration of the polysilazane solution, the solvent, the application method, and the like.
- the following is an example of spin coating.
- a polysilazane solution of 0.5 to 20 cc per silicon substrate is generally placed at the center of the silicon substrate or at a few places including the center where a coating film is evenly formed on the entire surface of the substrate.
- the coating film is rotated (main spin) at a relatively high speed, for example, at a rotation speed of 500 to 450 rpm for 0.5 to 800 seconds to obtain a desired thickness of the coating film.
- the rotation speed is at least 500 rpm higher than the main spin rotation speed. Then, for example, rotate at a rotation speed of 100 to 500 rpm for 5 to 300 seconds (final spin).
- the substrate coated with the polysilazane solution is subsequently transferred to a pre-bake step.
- the purpose of this step is to completely remove the solvent contained in the polysilazane coating film and to pre-cure the polysilazane coating film.
- the prebake process is performed while controlling the temperature in the prebake process and increasing the temperature over time.
- the temperature in the pre-bake step is usually in the range of 50 ° C to 400 ° C; preferably 100 to 300 ° C.
- the time required for the pre-bake step is generally 10 seconds to 30 minutes, preferably 3 seconds to 10 minutes.
- the maximum prebaking temperature in the prebaking step is generally set to a temperature higher than the boiling point of the solvent used for the polysilazane solution from the viewpoint of removing the solvent from the film.
- the temperature of the substrate is set at a specific constant temperature, for example, a few minutes at a temperature T1 and a few minutes at a temperature T2 higher than T1. Hold for a certain time, and then hold at a higher temperature for a certain time.
- the temperature difference between each stage is generally 30 to 150 ° C, and the time for keeping the temperature constant is generally 10 seconds to 3 minutes at each temperature.
- the first pre-baking temperature is defined as A (° C) when the second pre-baking temperature (maximum pre-baking temperature) is A (° C). , (14) A to (3/4) A (° C.).
- the third pre-baking temperature (maximum pre-baking temperature) is A (° C)
- the first pre-baking is performed.
- the temperature is preferably in the range of (1/4) A to (5/8) A (° C)
- the pre-baking temperature of the second stage is (5/8) A to (7/8) A (° C.).
- the first stage prebaking temperature is 50 ⁇ 150
- the pre-baking temperature for the first stage is 50 to 125 ° C
- the pre-baking for the second stage is performed.
- the work temperature is preferably in the range of 125 to 175 ° C.
- the temperature is set at a plurality of stages so that the target temperature can be reached with a gentle temperature increase in the pre-baking process as a whole. is there.
- the temperature difference may be zero for any earlier point in time, but must not be negative.
- the slope of the temperature curve does not become negative when plotting the pre-baking temperature against time.
- the heating rate is generally 0 to 500.
- the substrate temperature is increased so as to be in the range of C / min, preferably 10 to 300 ° C./min. The higher the heating rate, the shorter the process time. The slower the heating rate, the better from the viewpoint of removing the solvent inside the groove structure and sufficiently polymerizing the polysilazane.
- the temperature in the prebaking step is controlled so as to increase with time means, for example, that a low-temperature substrate is moved to a high-temperature condition and the substrate temperature is rapidly increased. This does not include the case where the substrate is prebaked while maintaining the same temperature after setting the same temperature. In this case, the temperature of the substrate increases with time, but the temperature increase is not controlled, and in such a case, the effect of the present invention will not be obtained.
- Such temperature control in the pre-baking process prevents the temperature of the coating film from rising sharply in the pre-baking process, and raises the temperature at a slower rate than the usual pre-baking by one-step heating.
- the purpose is to let. It is not clear why the method according to the invention reduces voids inside the trench, for example, but if the substrate temperature rises rapidly, the surface may become excessive before the solvent is completely removed from the trench's isolation trench. Presumed to be due to curing and solvent vapor remaining inside the groove Is done.
- the present invention solves such a problem by controlling the temperature in the prebaking process.
- the polysilazane coating is heated to convert the polysilazane coating to a silicon dioxide film and to cure it.
- it is sufficient to heat only the polysilazane coating film.
- the entire substrate is put into a curing furnace or the like and heated.
- the substrate heated to a high temperature by the pre-baking is heated before the temperature falls to less than 50 ° C.
- the substrate is subjected to a curing step. By subjecting the substrate to a curing step before the temperature is lowered, energy and time for raising the temperature again can be saved.
- Curing is generally performed using a curing furnace and a hot plate in an inert gas or oxygen atmosphere having a water vapor concentration of 1% or more.
- Water vapor is essential to sufficiently convert polysilazane to silicon dioxide, and is usually at least 1%, preferably at least 5%.
- an inert gas is used as the atmosphere gas, use nitrogen, argon, helium, or the like.
- the curing is carried out in one stage, from the maximum prebaking temperature to 100 ° C, preferably from the maximum prebaking temperature to 800 ° C.
- the maximum prebaking temperature refers to the highest temperature in the prebaking process.
- the temperature in the prebaking process increases with time, and thus is equal to the final temperature in the prebaking process. .
- the temperature rise time to the target temperature is generally 1 to 10 o ° c / min
- the curing time after reaching the target temperature is generally 1 minute to 10 hours, preferably 15 minutes to 3 hours. Time, If necessary, the curing temperature or the composition of the curing atmosphere can be changed stepwise.
- polishing is performed by Chemical Mechanical Polishing (CMP). Polishing by this CMP can be performed by a general abrasive and a polishing apparatus. Specifically, an aqueous solution in which an abrasive such as silica, alumina, or ceria, and other additives are dispersed as necessary can be used as the abrasive, and a commercially available polishing apparatus can be used. A general CMP device can be used.
- CMP Chemical Mechanical Polishing
- the silicon dioxide film derived from polysilazane on the substrate surface is almost completely removed, but an etching process is further performed to remove the remaining silicon dioxide film.
- the etching treatment generally uses an etching solution, and the etching solution is not particularly limited as long as it can remove the silicon dioxide film.
- a hydrofluoric acid aqueous solution containing ammonium fluoride is used.
- the concentration of ammonium fluoride in this aqueous solution is preferably 5% or more, more preferably 30% or more.
- the silicon nitride film is also removed by etching following the etching step (F).
- An etching solution is generally used for this etching treatment, and the etching solution is not particularly limited as long as the silicon nitride film can be removed.
- a phosphoric acid having a concentration of 70% or more is used.
- the target trench / isolation structure can be formed by performing the processing in the above-described order, but further steps can be combined as necessary.
- the (B) coating step to (D) curing step are repeated two or more times, that is, after the (D) curing step, a second (B) coating step, (C) pre-baking step, and ( D) performing a curing step.
- a CVD method preferably a high-density plasma CVD method
- the (B) coating step to (D) curing step for forming a silicon dioxide film.
- the thickness of the silicon dioxide film formed in (B) the coating step to (D) the curing step is made smaller than a desired thickness, and then a further silicon dioxide film is formed by the CVD method.
- the trench isolation structure is to be formed only by the CVD method, voids are easily formed in the groove as described above, but before that, silicon dioxide is buried deep in the groove structure by the method according to the present invention. By doing so, it is possible to prevent the occurrence of voids in the trench due to the CVD method.
- an inert gas or oxygen atmosphere having a water vapor concentration of 1% or more is used between the (E) polishing step and the (F) etching step. Further, a treatment of re-curing by heating can be performed.
- (D) the degree of freedom in the polishing conditions is increased and the distance from the deepest part of the groove to the surface is increased by completely hardening after polishing, without completely curing in the curing step. By shortening the length and sufficiently curing, the organic solvent remaining in the deep part of the groove can be easily removed.
- the heating conditions for such re-curing vary depending on the purpose and the like, but are generally at 400 to 1000 ° C, preferably 600 to 800 ° C.
- the heating time at that time is generally 10 seconds to 3 hours, preferably 1 minute to 1 hour.
- the formed silicon dioxide film can be annealed to densify the silicon dioxide film.
- the temperature condition for the densification is generally 400 to 1200 ° C, preferably 600 to 1000 ° C.
- the heating time at that time is generally 10 seconds to 3 hours, preferably 1 minute to 1 hour. Unlike the re-hardening process described above, there is no need for steam in the atmosphere.
- the present invention also includes a second embodiment in which the order of the steps is changed from the first embodiment described above.
- this second aspect (A) Groove forming process
- a trench isolation structure is formed.
- Each step can be performed under the conditions described above.o
- step (F) is a film derived from polysilazane (which has not been completely converted to silicon dioxide), and is intended to remove an unnecessary portion for forming a trench isolation structure. is there.
- the reason that the concave portion is formed on the surface of the narrow trench groove is that when the polysilazane embedded in the trench groove shrinks in the curing process, the internal stress is generated as the width of the trench groove becomes narrower, and the density increases. Is considered to be smaller.
- the polysilazane buried in the trench is etched to a necessary portion in advance before contraction due to the curing step to form a trench / isolation structure, followed by curing. It is considered that the conversion to silicon dioxide can prevent the occurrence of concave portions on the substrate surface.
- a polysilazane solution A was prepared in the following manner.
- the obtained polymer solution was purified by circulating filtration using a filter having a filtration accuracy of 0.1 ⁇ m.
- the number of particles having a particle size of 0.2 zm or more contained in the obtained polymer solution was measured by a particle counter (KS40-BF, manufactured by Rion Co., Ltd.) and found to be 3 / cc.
- step (5) the amount of pyridine removed was adjusted to prepare a polysilazane solution B having a polymer concentration of 10% by weight.
- the number of particles of the polysilazane solution B was measured in the same manner as the polysilazane solution A.
- Polysilazane solution C was prepared as described below according to the description in Example 1 of Japanese Patent No. 1474685.
- the obtained polysilazane was dissolved in xylene to make a 20% by weight solution, and purified by circulating filtration using a filter having a filtration accuracy of 0.1 Adm.
- trench-isolation grooves were formed in a silicon substrate as described below.
- a silicon dioxide film was formed on the surface of a silicon substrate by a thermal oxidation method, and a silicon nitride film was formed thereon by a CVD method.
- a photoresist was applied on the formed silicon nitride film, and exposed and developed by photolithography to form a pattern.
- the pattern was such that the resulting pattern was a linear groove of l / m, 0.5 zm, 0.2 zm, 0.1zm, and 0.1 ⁇ .
- the silicon nitride film and the silicon dioxide film were sequentially dry-etched. A hole penetrating the silicon nitride film and the silicon dioxide film was formed by this dry etching, and the silicon substrate was linearly exposed.
- the photoresist was removed, exposing the silicon nitride film.
- a silicon substrate was etched to form a groove structure in the silicon substrate.
- a silicon dioxide film was formed inside the trench by a thermal oxidation method.
- a silicon nitride film was also formed inside the trench by the CVD method to form a trench isolation trench. This silicon nitride film has a function of suppressing oxidation of silicon when the polysilazane is cured in a later step.
- a trench isolation structure was formed on the silicon substrate having the trench isolation trench formed by the method described above by the following method.
- the polysilazane solution described above was applied to a silicon substrate by spin coating.
- the application conditions were a rotation speed of 1000 rpm and a rotation time of 30 seconds.
- the film thickness was 600 nm.
- the coated substrate was prebaked by heating at 100 ° C; 150 ° C and 200 ° C for 2 minutes each.
- the silicon dioxide film was etched to the vicinity of the silicon substrate with an aqueous solution containing 30% by weight of ammonium fluoride and 1% of hydrofluoric acid to form a trench isolation structure.
- Example 1 was repeated, except that the polysilazane solution was changed to B. However, the application and curing of the polysilazane solution were divided into three times, and steps (1) to (3) were repeated three times.
- Example 3
- Example 1 was repeated, except that the polysilazane solution was changed to B. However, after step (3), a silicon dioxide film was formed to a thickness of 30 Onm by HDP-CVD.
- Example 4
- a trench / isolation structure was formed in the same manner as in Example 1 except that a 10 nm thick polysilicon film was formed on a silicon substrate by a CVD method, and then a polysilazane solution was applied.
- Example 1 After the step (4) of Example 1, the temperature was again raised to 200 ° C, and the mixture was cured and introduced into a furnace under a pure oxygen atmosphere. A trench isolation structure was formed in the same manner as in Example 1, except that a heating step was performed while increasing the temperature at a rate of temperature increase.
- the substrate was annealed in a nitrogen atmosphere at 1000 ° C. to densify the silicon dioxide.
- An isolation structure was formed.
- step (3) The steps up to the pre-bake step of step (2) are performed in the same manner as in Example 1, and the step of polishing by the CMP method in step (4) and etching the silicon dioxide film derived from polysilazane to the vicinity of the substrate is performed in step (3).
- a trench isolation structure was formed in the same manner as in Example 1.
- an aqueous solution containing 30% by weight of ammonium fluoride and 1% of hydrofluoric acid was used for the etching performed before the step (3).
- a trench isolation structure was formed as follows.
- a polysilazane solution C was applied to a silicon substrate by a spin coating method.
- the silicon dioxide film was etched to the vicinity of the silicon substrate with an aqueous solution containing 30% by weight of ammonium fluoride and 1% of hydrofluoric acid to form a trench isolation structure.
- a polysilazane solution A was applied to a silicon substrate by spin coating.
- the coated silicon substrate was left in an inert atmosphere at 300 ° C for 2 minutes and prebaked.
- the silicon dioxide film was etched to the vicinity of the silicon substrate with an aqueous solution containing 30% by weight of ammonium fluoride and 1% of hydrofluoric acid, thereby forming a trench isolation structure.
- Width 1.0 ⁇ m Relative height from top of trench Void trench width 0.5 m O.Zum Ol ⁇ m 0.05 ⁇ m 0.05 m
- Example 1 0.-0.03 / m -0.05 zm-0.08 zm None
- Example 2 0.000 m 0.000 / m-0.02jum -0.04 m None
- Example 3 -0.Oljum -0.02 zm -0. -0. 04j m None
- Example 5 -0. 01 zm -0. 01 zm -0.
- Example 6 0.OOj m -0.01 / m -0.0.01 / zm -0.01 zm None
- Example 7 -0. Oljum -0. Ol ⁇ m -0.03 / m-0 ., 05 zm None Comparative Example 1 -0. .03 ⁇ m -0. .09 / m -0, .24 ⁇ 1 -0, .41 zm Lower Bottom Comparative Example 2-0. .05 zm -0.. Sjum -0. .18 / zm-0, 22 m None
- a minus sign indicates that the top of the trench is lower than the top of the 1.0 zm trench.
- the trench / isolation structure formed by the method of the present invention has no planar defects such as voids, and has a high flatness at the top of the trench.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP04716765A EP1608012A1 (en) | 2003-03-05 | 2004-03-03 | Method of forming trench isolation structure |
US10/548,222 US20060160321A1 (en) | 2003-03-05 | 2004-03-03 | Method of forming trench isolation structure |
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JP2003-058365 | 2003-03-05 | ||
JP2003058365A JP2004273519A (ja) | 2003-03-05 | 2003-03-05 | トレンチ・アイソレーション構造の形成方法 |
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WO2004079819A1 true WO2004079819A1 (ja) | 2004-09-16 |
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PCT/JP2004/002638 WO2004079819A1 (ja) | 2003-03-05 | 2004-03-03 | トレンチ・アイソレーション構造の形成方法 |
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US (1) | US20060160321A1 (ja) |
EP (1) | EP1608012A1 (ja) |
JP (1) | JP2004273519A (ja) |
KR (1) | KR20060002786A (ja) |
CN (1) | CN1315176C (ja) |
TW (1) | TW200503101A (ja) |
WO (1) | WO2004079819A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1768175A1 (en) * | 2004-06-04 | 2007-03-28 | AZ Electronic Materials (Japan) K.K. | Method for forming trench isolation structure |
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JP4594648B2 (ja) * | 2004-05-26 | 2010-12-08 | 株式会社東芝 | 半導体装置およびその製造方法 |
JP5091428B2 (ja) * | 2005-06-14 | 2012-12-05 | 株式会社東芝 | 半導体装置の製造方法 |
US7892942B2 (en) * | 2007-07-09 | 2011-02-22 | Micron Technology Inc. | Methods of forming semiconductor constructions, and methods of forming isolation regions |
JP5329825B2 (ja) | 2008-02-25 | 2013-10-30 | 株式会社東芝 | 半導体装置の製造方法 |
JP5306669B2 (ja) * | 2008-02-29 | 2013-10-02 | AzエレクトロニックマテリアルズIp株式会社 | シリカ質膜の形成方法およびそれにより形成されたシリカ質膜 |
JP5405031B2 (ja) * | 2008-03-06 | 2014-02-05 | AzエレクトロニックマテリアルズIp株式会社 | シリカ質膜の製造に用いる浸漬用溶液およびそれを用いたシリカ質膜の製造法 |
US7999355B2 (en) | 2008-07-11 | 2011-08-16 | Air Products And Chemicals, Inc. | Aminosilanes for shallow trench isolation films |
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Also Published As
Publication number | Publication date |
---|---|
CN1757105A (zh) | 2006-04-05 |
CN1315176C (zh) | 2007-05-09 |
TW200503101A (en) | 2005-01-16 |
US20060160321A1 (en) | 2006-07-20 |
JP2004273519A (ja) | 2004-09-30 |
KR20060002786A (ko) | 2006-01-09 |
EP1608012A1 (en) | 2005-12-21 |
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