WO2015060105A1 - 半導体装置の製造方法、シート状樹脂組成物及びダイシングテープ一体型シート状樹脂組成物 - Google Patents
半導体装置の製造方法、シート状樹脂組成物及びダイシングテープ一体型シート状樹脂組成物 Download PDFInfo
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Definitions
- the present invention relates to a method for manufacturing a semiconductor device, a sheet-shaped resin composition, and a dicing tape-integrated sheet-shaped resin composition.
- TSV through silicon via
- the support is made of a material having heat resistance (for example, heat resistant glass).
- a sheet-like resin composition used for a flip chip type semiconductor device in which a semiconductor chip is mounted on a substrate by flip chip bonding (flip chip connection), and for sealing an interface between the semiconductor chip and the substrate is known (for example, refer patent document 2).
- FIG. 8 to 11 are diagrams for explaining an example of a conventional method for manufacturing a semiconductor device.
- a support 120 is placed on one surface 110 b of a wafer 110 on which a through electrode (not shown) is formed via a temporary fixing sheet 130.
- a bonded wafer 100 with a support is prepared.
- the wafer with support 100 is, for example, a step of bonding a circuit forming surface of a wafer having a circuit forming surface and a circuit non-forming surface to the support through a temporary fixing layer, and a circuit non-forming surface of the wafer bonded to the support.
- a process of processing for example, TSV formation, electrode formation, metal wiring formation
- the process of performing the said process includes the process at high temperature (for example, 250 degreeC or more). Therefore, a support having a certain degree of strength and heat resistance (for example, heat resistant glass) is used.
- a dicing tape-integrated sheet-shaped resin composition 140 in which a sheet-shaped resin composition 160 is laminated on a dicing tape 150 is prepared.
- the sheet-shaped resin composition 160 for example, the sheet-shaped resin composition disclosed in Patent Document 2 is used.
- the other surface 110 a of the wafer 100 with the support is attached to the sheet-shaped resin composition 160 of the dicing tape-integrated sheet-shaped resin composition 140.
- the support 120 is peeled off from the wafer 110 together with the temporary fixing layer 130.
- the wafer 110 is diced together with the sheet-shaped resin composition 160 to form a chip with the sheet-shaped resin composition (not shown). Furthermore, the chip with the sheet-shaped resin composition is attached to the mounting substrate, the electrode of the chip and the electrode of the mounting substrate are joined, and the gap between the chip and the mounting substrate is the sheet-shaped composition. Is sealed.
- JP 2012-12573 A Japanese Patent No. 4438973
- a part of the temporary fixing layer 130 may remain on the wafer 110 when the support 120 is peeled off from the wafer 110 together with the temporary fixing layer 130. If such a residue is left as it is, there is a risk of causing a problem in a subsequent process. On the other hand, the residue can be removed by cleaning the wafer.
- the sheet-shaped resin composition 160 is also dissolved by the solvent (see FIG. 11). In this case, there is a risk of further contamination of the wafer, loss of function as a sheet-shaped resin composition for sealing the gap between the chip and the mounting substrate, and a decrease in yield.
- the present invention has been made in view of the above-described problems, and its purpose is to manufacture a semiconductor device with high yield by suppressing dissolution of a sheet-shaped resin composition when cleaning a wafer after the support member is peeled from the wafer.
- An object of the present invention is to provide a semiconductor device manufacturing method, a sheet-shaped resin composition suitable for the manufacturing method, and a dicing tape-integrated sheet-shaped resin composition.
- the present invention provides a process A for preparing a wafer having a connection member formed on at least the first main surface;
- a wafer with a support member is formed by bonding the second main surface opposite to the first main surface of the wafer and a support member having a temporary fixing layer formed on the support through the temporary fixing layer.
- Step B Preparing a dicing tape-integrated sheet-shaped resin composition in which an ultraviolet curable sheet-shaped resin composition is laminated on a dicing tape; and A step D of bonding the first main surface of the wafer with the support member and the sheet-shaped resin composition of the dicing tape-integrated sheet-shaped resin composition; After the step D, a step E of peeling the support member from the wafer; And after the step E, the step F of cleaning the second main surface of the wafer, Furthermore, after the step D and before the step F, a manufacturing method of a semiconductor device including a step S of curing a peripheral portion of the sheet-shaped resin composition not overlapping with the wafer in a plan view by ultraviolet irradiation It is.
- the sheet-shaped resin composition of the dicing tape-integrated sheet-shaped resin composition is an ultraviolet curable type, and after the wafer with the support member and the dicing tape-integrated sheet-shaped resin composition are bonded together.
- the exposed peripheral portion of the sheet-shaped resin composition is UV-cured at any stage before cleaning the wafer.
- the ultraviolet irradiation is preferably performed from the wafer side.
- the central portion overlapping with the wafer in plan view of the sheet-shaped resin composition needs to avoid curing due to ultraviolet irradiation in order to hold the wafer and chips during subsequent wafer dicing.
- the wafer becomes a masking for the central portion of the sheet-shaped resin composition at the time of the ultraviolet irradiation, so there is no need to mask the central portion by a separate means, Curing by ultraviolet irradiation can be performed efficiently.
- the step S is preferably performed after the step D and before the step E. Thereby, adhesion to the sheet-like resin composition of a temporary fix layer can be reduced.
- the manufacturing method further includes, after the step F, a step G of dicing the wafer together with the sheet-shaped resin composition to obtain a chip with the sheet-shaped resin composition.
- a step G of dicing the wafer together with the sheet-shaped resin composition to obtain a chip with the sheet-shaped resin composition.
- dissolution of the sheet-shaped resin composition is suppressed. Therefore, the sheet-shaped resin composition in the chip with the sheet-shaped resin composition obtained in the step F functions sufficiently as a sheet-shaped resin composition for sealing the gap between the chip and the mounting substrate.
- the chip with the sheet-shaped resin composition is disposed on a mounting substrate, and the connection member included in the chip and the electrode included in the mounting substrate are bonded, and the chip It is preferable to further include a step H of sealing the gap with the mounting substrate with the sheet-like composition.
- a step H of sealing the gap with the mounting substrate with the sheet-like composition As described above, dissolution of the sheet-shaped resin composition is suppressed. Therefore, the yield of the semiconductor device obtained by the step G (semiconductor device in which the gap between the chip and the mounting substrate is sealed with the sheet-like composition) can be improved.
- the step D is preferably performed under reduced pressure.
- the step D is performed under reduced pressure, the occurrence of voids at the interface between the wafer and the sheet-shaped resin composition can be suppressed when the wafer and the sheet-shaped resin composition are bonded together, and the semiconductor device has higher reliability. Can be manufactured.
- the present invention includes a sheet-like resin composition used in the method for manufacturing a semiconductor device.
- the present invention also includes a dicing tape-integrated sheet-shaped resin composition used in the method for manufacturing a semiconductor device. According to this configuration, since the dicing tape-integrated sheet-shaped resin composition is used, productivity can be further improved in that the step of bonding the dicing tape and the sheet-shaped resin composition can be omitted. .
- 1 to 7 are schematic cross-sectional views for explaining a method for manufacturing a semiconductor device according to an embodiment of the present invention.
- the method for manufacturing a semiconductor device includes the following steps: Step A: Prepare a wafer having a connection member formed on at least the first main surface; Step B: Wafer with support member obtained by bonding a second main surface opposite to the first main surface of the wafer and a support member having a temporary fixing layer formed on a support through the temporary fixing layer.
- Step C preparing a dicing tape-integrated sheet-shaped resin composition in which an ultraviolet curable sheet-shaped resin composition is laminated on a dicing tape;
- Step D bonding the first main surface of the wafer with the support member and the sheet-shaped resin composition of the dicing tape-integrated sheet-shaped resin composition;
- Step E After the step D, the support member is peeled from the wafer; and
- Step F after the step E, the first main surface of the wafer is cleaned.
- the manufacturing method further includes the following steps: Step S: After the step D and before the step F, the peripheral portion of the sheet-shaped resin composition that does not overlap with the wafer in plan view is cured by ultraviolet irradiation.
- a wafer 11 having a connection member (not shown) formed on at least the first main surface 11a is prepared.
- the wafer 11 include a silicon wafer, a germanium wafer, a gallium-arsenic wafer, a gallium-phosphorus wafer, and a gallium-arsenic-aluminum wafer.
- the connecting member such as a bump or a conductive material
- a tin-lead metal material for example, a tin-lead metal material, a tin-silver metal material, a tin-silver-copper metal material, a tin-zinc metal material
- solders solders (alloys) such as a tin-zinc-bismuth metal material, a gold metal material, and a copper metal material.
- the height of the connecting member is also determined according to the application, and is generally about 15 to 100 ⁇ m. Of course, the height of each connection member in the wafer 11 may be the same or different.
- the connecting members may or may not be electrically connected. Examples of the electrical connection between the connection members include connection by connection through a via called a TSV (Through Silicon Via) type.
- step B the second main surface 11b opposite to the first main surface 11a of the wafer 11 and the support member 17 having the temporary fixing layer 13 formed on the support 12 are provided.
- the wafer 10 with a supporting member is formed by bonding through the temporary fixing layer 13 (see FIG. 1).
- the formation of the wafer 10 with the support member includes, for example, a step of bonding the circuit formation surface of the wafer 11 having a circuit formation surface and a circuit non-formation surface (back surface) to the temporary fixing layer 13 of the support member 17 (support member bonding step)
- the process of grinding the circuit non-formation surface of the wafer bonded to the support 12 (wafer back surface grinding process) and the processing of the circuit non-formation surface of the wafer after grinding the circuit non-formation surface (for example, TSV (through electrode) formation, electrode) Formation, metal wiring formation) can be performed by a procedure including a step (circuit non-forming surface processing step).
- the process of processing the non-circuit surface of the wafer includes metal sputtering for forming electrodes, wet etching for etching the metal sputtering layer, and resist for forming a mask for forming metal wiring.
- Conventionally known processes such as pattern formation by coating, exposure, and development, resist peeling, dry etching, metal plating formation, silicon etching for TSV formation, and oxide film formation on the silicon surface can be mentioned.
- the reason why the support 12 is bonded to the wafer 11 is to ensure the strength during wafer grinding.
- the process of performing the said process includes the process at high temperature (for example, 250 degreeC or more). Therefore, a material having a certain degree of strength and heat resistance (for example, heat resistant glass) is used for the support 12.
- the support 12 one having a certain degree of strength and heat resistance can be used.
- the support 12 include heat-resistant glass, heat-resistant engineer plastic, and a wafer (for example, the wafer 11).
- the pressure-sensitive adhesive composition constituting the temporary fixing layer 13 is not peeled off from the support 11 and the wafer 12 when the wafer back surface grinding step and the circuit non-forming surface processing step are performed, and the step E (support) As long as the supporting member 17 can be peeled from the wafer 11 in the member peeling step), a known pressure-sensitive adhesive composition can be used without particular limitation.
- the forming material for forming such a temporary fixing layer 13 is, for example, a solvent-soluble pressure-sensitive adhesive composition (the temporary fixing layer is dissolved and removed with a solvent), an ultraviolet curable pressure-sensitive adhesive composition (the temporary fixing layer is Curing by UV irradiation, reducing the adhesive strength to release), thermosetting adhesive composition (thermally fixing the temporary fixing layer and reducing adhesive strength to release), thermal foaming release adhesive composition (temporary The foaming layer is thermally foamed and peeled by reducing the adhesive force due to the surface irregularities generated), laser-fired peelable pressure-sensitive adhesive composition (temporary fastening layer is fired by laser and peeled to reduce the adhesive force), and temporarily fixed Examples include a multistage adhesive composition in which the peripheral edge of the layer is strongly adhesive and the inner side of the peripheral edge is weakly adhesive, and the adhesive force of the peripheral edge is cut off during peeling. Specific resins contained in these compositions include polyimide resins, silicone resins, aliphatic olefin resins, hydrogenated st
- the polyimide resin can be generally obtained by imidizing (dehydrating and condensing) a polyamic acid that is a precursor thereof.
- a method for imidizing the polyamic acid for example, a conventionally known heat imidization method, azeotropic dehydration method, chemical imidization method and the like can be employed. Of these, the heating imidization method is preferable.
- the heat imidization method it is preferable to perform heat treatment under a nitrogen atmosphere or an inert atmosphere such as a vacuum in order to prevent deterioration of the polyimide resin due to oxidation.
- the polyamic acid can be obtained by charging and reacting an acid anhydride and diamine so as to have a substantially equimolar ratio in an appropriately selected solvent.
- the polyimide resin is not particularly limited, and one having a structural unit derived from a diamine having an ether structure can be used.
- the diamine having an ether structure is not particularly limited as long as it is a compound having an ether structure and having at least two terminals having an amine structure.
- a diamine having a glycol skeleton is preferable.
- diamine having a glycol skeleton examples include, for example, a diamine having a polypropylene glycol structure and one amino group at each end, a polyethylene glycol structure, and one amino group at each end. And a diamine having a polytetramethylene glycol structure and having one amino group at each end. Moreover, the diamine which has two or more of these glycol structures and has one amino group in both the ends can be mentioned.
- the molecular weight of the diamine having an ether structure is preferably within the range of 100 to 5000, and more preferably 150 to 4800.
- the molecular weight of the diamine having an ether structure is in the range of 100 to 5000, it is easy to obtain the temporary fixing layer 13 having high adhesive strength at low temperatures and exhibiting peelability at high temperatures.
- other diamines having no ether structure can be used in combination with diamines having an ether structure.
- examples of other diamines having no ether structure include aliphatic diamines and aromatic diamines.
- the mixing ratio of the diamine having an ether structure and the other diamine having no ether structure is preferably 100: 0 to 20:80, more preferably 99: 1 to 30:70 in terms of molar ratio.
- Examples of the aliphatic diamine include ethylenediamine, hexamethylenediamine, 1,8-diaminooctane, 1,10-diaminodecane, 1,12-diaminododecane, 4,9-dioxa-1,12-diaminododecane, , 3-bis (3-aminopropyl) -1,1,3,3-tetramethyldisiloxane ( ⁇ , ⁇ -bisaminopropyltetramethyldisiloxane) and the like.
- the molecular weight of the aliphatic diamine is usually 50 to 1,000,000, preferably 100 to 30,000.
- aromatic diamine examples include 4,4′-diaminodiphenyl ether, 3,4′-diaminodiphenyl ether, 3,3′-diaminodiphenyl ether, m-phenylenediamine, p-phenylenediamine, and 4,4′-diaminodiphenylpropane.
- the molecular weight of the aromatic diamine is usually 50 to 1000, preferably 100 to 500.
- molecular weight means the value (weight average molecular weight) measured by GPC (gel permeation chromatography) and computed by polystyrene conversion.
- Examples of the acid anhydride include 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride, 2,2 ′, 3,3′-biphenyltetracarboxylic dianhydride, 3,3 ′, 4,4′-benzophenone tetracarboxylic dianhydride, 2,2 ′, 3,3′-benzophenone tetracarboxylic dianhydride, 4,4′-oxydiphthalic dianhydride, 2,2-bis (2, 3-Dicarboxyphenyl) hexafluoropropane dianhydride, 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA), bis (2,3-dicarboxyphenyl) methane dianhydride Bis (3,4-dicarboxyphenyl) methane dianhydride, bis (2,3-dicarboxyphenyl) sulfone dianhydride, bis
- Examples of the solvent for reacting the acid anhydride with the diamine include N, N-dimethylacetamide, N-methyl-2-pyrrolidone, N, N-dimethylformamide, and cyclopentanone. These may be used alone or in combination. Further, in order to adjust the solubility of raw materials and resins, a nonpolar solvent such as toluene or xylene may be appropriately mixed and used.
- the temporary fixing layer 13 When a polyimide resin having a structural unit derived from a diamine having an ether structure is used for the temporary fixing layer 13, the temporary fixing layer 13 is immersed in N-methyl-2-pyrrolidone (NMP) at 50 ° C. for 60 seconds and 150 ° C.
- NMP N-methyl-2-pyrrolidone
- the weight loss after drying for 30 minutes is preferably 1.0% by weight or more, more preferably 1.2% by weight or more, and further preferably 1.3% by weight or more.
- the said weight decreasing rate is so preferable that it is large, it is 50 weight% or less and 30 weight% or less, for example. If the weight loss after immersion in N-methyl-2-pyrrolidone (NMP) at 50 ° C. for 60 seconds and drying at 150 ° C.
- the temporary fixing layer 13 is N-methyl-2 -It can be said that it is dissolved in pyrrolidone and is sufficiently reduced in weight. As a result, the temporary fixing layer 13 can be easily peeled off with N-methyl-2-pyrrolidone.
- the weight reduction rate of the temporary fixing layer 13 can be controlled by, for example, the solubility of the raw material in NMP. That is, as the raw material having a higher solubility in NMP is selected, the temporary fixing layer 13 obtained using the raw material has a higher solubility in NMP.
- silicone resin examples include peroxide cross-linking silicone pressure-sensitive adhesives, addition reaction type silicone pressure-sensitive adhesives, dehydrogenation reaction type silicone pressure-sensitive adhesives, and moisture-curing type silicone pressure-sensitive adhesives.
- the said silicone resin may be used individually by 1 type, and may use 2 or more types together.
- the silicone resin is excellent in terms of high heat resistance.
- addition reaction type silicone pressure-sensitive adhesives are preferable in terms of few impurities.
- the temporary fixing layer 13 may contain other additives as necessary.
- other additives include flame retardants, silane coupling agents, and ion trapping agents.
- flame retardant include antimony trioxide, antimony pentoxide, and brominated epoxy resin.
- silane coupling agent include ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, and the like.
- the ion trapping agent include hydrotalcites and bismuth hydroxide. Such other additives may be only one kind or two or more kinds.
- the acrylic resin is not particularly limited, and includes one or more esters of acrylic acid or methacrylic acid ester having a linear or branched alkyl group having 30 or less carbon atoms, particularly 4 to 18 carbon atoms. Examples thereof include a polymer (acrylic copolymer) as a component.
- alkyl group examples include a methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, t-butyl group, isobutyl group, amyl group, isoamyl group, hexyl group, heptyl group, cyclohexyl group, 2- Examples include an ethylhexyl group, an octyl group, an isooctyl group, a nonyl group, an isononyl group, a decyl group, an isodecyl group, an undecyl group, a lauryl group, a tridecyl group, a tetradecyl group, a stearyl group, an octadecyl group, and a dodecyl group.
- the other monomer that forms the polymer is not particularly limited, and examples thereof include acrylic acid, methacrylic acid, carboxyethyl acrylate, carboxypentyl acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid.
- Carboxyl group-containing monomers maleic anhydride or acid anhydride monomers such as itaconic anhydride, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-methacrylic acid 4- Hydroxybutyl, 6-hydroxyhexyl (meth) acrylate, 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate or (4-hydroxymethylcyclohexyl) -Methyla Hydroxyl group-containing monomers such as relate, styrene sulfonic acid, allyl sulfonic acid, 2- (meth) acrylamide-2-methylpropane sulfonic acid, (meth) acrylamide propane sulfonic acid, sulfopropyl (meth) acrylate or (meth) Examples thereof include sulfonic acid group-containing monomers such as acryl
- the temporary fixing layer 13 is produced, for example, as follows. First, a resin composition solution for forming a temporary fixing layer (when the temporary fixing layer 13 is formed of a polyimide resin, a solution containing the polyamic acid) is prepared. Next, the solution is applied on a substrate to a predetermined thickness to form a coating film, and then the coating film is dried under a predetermined condition.
- the substrate include metal foil such as SUS304, 6-4 alloy, aluminum foil, copper foil, Ni foil, polyethylene terephthalate (PET), polyethylene, polypropylene, fluorine-based release agent, and long-chain alkyl acrylate-type release agent.
- a plastic film, paper, or the like whose surface is coated with a release agent such as, can be used.
- drying temperature is 50 to 150 ° C. and the drying time is 3 to 30 minutes. Thereby, the temporary fixing layer 13 which concerns on this embodiment is obtained.
- the wafer 10 with a support member in which the wafer 11 and the support member 17 are bonded via the temporary fixing layer 13 can be produced by transferring the temporary fixing layer 13 to the support 12 and then bonding the wafer 11 together.
- the support 12 can be attached to the wafer 11.
- the wafer 10 with a support is formed by directly applying a resin composition solution for forming a temporary fixing layer on the support 12 to form a coating film, and then drying the coating film under a predetermined condition. 13 and then the wafer 11 may be bonded together.
- the resin composition solution for forming the temporary fixing layer is directly applied to the wafer 11 to form a coating film, and then the coating film is dried under predetermined conditions to form the temporary fixing layer 13. May be produced by laminating.
- Step C Preparation step of dicing tape-integrated sheet-shaped resin composition
- the dicing tape-integrated sheet-shaped resin composition 14 in which the ultraviolet curable sheet-shaped resin composition 16 is laminated on the dicing tape 15 is obtained.
- the shape of the sheet-like resin composition 16 in plan view is not particularly limited, but may be a circle, a rectangle, or the like.
- the size and shape of the sheet-shaped resin composition 16 are not particularly limited, for example, when the planar view shape of the wafer 11 is circular (for example, the diameter is 290 mm), a circular shape having a diameter larger than that of the wafer 11 ( For example, the diameter is preferably 300 mm).
- the wafer 11 and the sheet-like resin composition 16 are preferably laminated so that the centers are aligned.
- the dicing tape 15 is configured by forming an adhesive layer on a base material.
- the base material can be used as a support matrix such as an adhesive layer.
- the substrate include paper-based substrates such as paper; fiber-based substrates such as cloth, nonwoven fabric, felt, and net; metal-based substrates such as metal foil and metal plate; plastic-based substrates such as plastic films.
- a rubber-based substrate such as a rubber sheet; a foamed material such as a foamed sheet; and a suitable laminate such as a laminate (for example, a laminate of a plastic-based substrate and another substrate or a laminate of plastic films). Thin leaves can be used.
- a plastic substrate can be suitably used as the substrate.
- plastic material examples include olefin resins such as polyethylene (PE), polypropylene (PP), and ethylene-propylene copolymer; ethylene-vinyl acetate copolymer (EVA), ionomer resin, ethylene- Copolymers containing ethylene as a monomer component such as (meth) acrylic acid copolymers and ethylene- (meth) acrylic acid ester (random, alternating) copolymers; polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyester such as polybutylene terephthalate (PBT); Acrylic resin; Polyvinyl chloride (PVC); Polyurethane; Polycarbonate; Polyphenylene sulfide (PPS); Amide resin such as polyamide (nylon) and wholly aromatic polyamide (aramid); Ether ether ketone (PEEK); polyimides; polyetherimides; polyvinylidene chloride; ABS (acrylonitrile - butadiene -
- examples of the material of the base material include polymers such as a crosslinked body of the resin.
- the plastic film may be used unstretched or may be uniaxially or biaxially stretched as necessary. According to the resin sheet to which heat shrinkability is imparted by stretching treatment or the like, the adhesive area between the pressure-sensitive adhesive layer and the sheet-like resin composition 16 is reduced by thermally shrinking the base material after dicing, and the semiconductor element is recovered. Can be facilitated.
- the surface of the base material is chemically treated by conventional surface treatments such as chromic acid treatment, ozone exposure, flame exposure, high piezoelectric impact exposure, ionizing radiation treatment, etc. in order to improve adhesion and retention with adjacent layers.
- a physical treatment or a coating treatment with a primer for example, an adhesive substance described later can be performed.
- the base material can be selected from the same type or different types as appropriate, and several types can be blended as necessary.
- a conductive material vapor deposition layer having a thickness of about 30 to 500 mm and made of a metal, an alloy, or an oxide thereof is provided on the base material.
- the substrate may be a single layer or a multilayer of two or more types.
- the thickness of the substrate is not particularly limited and can be appropriately selected according to strength, flexibility, purpose of use, and the like, for example, generally 1000 ⁇ m or less (for example, 1 ⁇ m to 1000 ⁇ m), preferably 10 ⁇ m to 500 ⁇ m, more preferably 20 ⁇ m to 300 ⁇ m, particularly about 30 ⁇ m to 200 ⁇ m, but is not limited thereto.
- the base material contains various additives (colorants, fillers, plasticizers, anti-aging agents, antioxidants, surfactants, flame retardants, etc.) as long as the effects of the present invention are not impaired. It may be.
- the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive and has adhesiveness.
- Such an adhesive is not particularly limited, and can be appropriately selected from known adhesives.
- examples of the adhesive include acrylic adhesive, rubber adhesive, vinyl alkyl ether adhesive, silicone adhesive, polyester adhesive, polyamide adhesive, urethane adhesive, fluorine Type adhesives, styrene-diene block copolymer adhesives, and known adhesives such as a creep property-improving adhesive in which a hot-melt resin having a melting point of about 200 ° C.
- a pressure sensitive adhesive a radiation curable pressure sensitive adhesive (or energy ray curable pressure sensitive adhesive) or a thermally expandable pressure sensitive adhesive can be used.
- An adhesive can be used individually or in combination of 2 or more types.
- an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be preferably used, and an acrylic pressure-sensitive adhesive is particularly preferable.
- an acrylic adhesive an acrylic adhesive based on an acrylic polymer (homopolymer or copolymer) using one or more (meth) acrylic acid alkyl esters as monomer components. Agents.
- Examples of the (meth) acrylic acid alkyl ester in the acrylic pressure-sensitive adhesive include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, and (meth) acrylic.
- the (meth) acrylic acid alkyl ester a (meth) acrylic acid alkyl ester having an alkyl group having 7 to 18 carbon atoms is preferred.
- the alkyl group of the (meth) acrylic acid alkyl ester may be either linear or branched.
- the said acrylic polymer is another monomer component (for example) copolymerizable with the said (meth) acrylic-acid alkylester as needed for the purpose of modification
- a unit corresponding to the copolymerizable monomer component may be included.
- copolymerizable monomer components include (meth) acrylic acid (acrylic acid, methacrylic acid), carboxyl such as carboxyethyl acrylate, carboxypentyl acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid.
- Acid anhydride group-containing monomer such as maleic anhydride, itaconic anhydride; hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, hydroxy (meth) acrylate Hydroxyl group-containing monomers such as hexyl, hydroxyoctyl (meth) acrylate, hydroxydecyl (meth) acrylate, hydroxylauryl (meth) acrylate, (4-hydroxymethylcyclohexyl) methyl methacrylate; styrene sulfonic acid, Sulfonic acid group-containing monomers such as rylsulfonic acid, 2- (meth) acrylamide-2-methylpropanesulfonic acid, (meth) acrylamidepropanesulfonic acid, sulfopropyl (meth) acrylate, (meth) acryloyloxynaphthalenes
- Succinimide monomers such as N-imide
- glycol-based acrylic ester monomers such as (meth) acrylic acid polyethylene glycol, (meth) acrylic acid polypropylene glycol, (meth) acrylic acid methoxyethylene glycol, (meth) acrylic acid methoxypolypropylene glycol
- Acrylic acid ester monomer having heterocycle such as tetrahydrofurfuryl acrylate, fluorine (meth) acrylate, silicone (meth) acrylate, halogen atom, silicon atom, etc .
- a radiation curable pressure sensitive adhesive or energy beam curable pressure sensitive adhesive
- examples of the radiation curable pressure sensitive adhesive include a radical reactive carbon-carbon double bond having a polymer side chain or main chain.
- Intrinsic radiation curable adhesives that use polymers in the chain or at the end of the main chain as the base polymer, and radiation curable adhesives that contain UV-curable monomer or oligomer components in the adhesive It is done.
- the heat-expandable adhesive as an adhesive
- the heat-expandable adhesive containing an adhesive and a foaming agent especially heat-expandable microsphere
- the pressure-sensitive adhesive layer has various additives (for example, a tackifier resin, a colorant, a thickener, a bulking agent, a filler, a plasticizer, and an anti-aging agent as long as the effects of the present invention are not impaired. , Antioxidants, surfactants, cross-linking agents, etc.).
- additives for example, a tackifier resin, a colorant, a thickener, a bulking agent, a filler, a plasticizer, and an anti-aging agent as long as the effects of the present invention are not impaired. , Antioxidants, surfactants, cross-linking agents, etc.).
- the crosslinking agent is not particularly limited, and a known crosslinking agent can be used. Specifically, as the crosslinking agent, an isocyanate crosslinking agent, an epoxy crosslinking agent, a melamine crosslinking agent, a peroxide crosslinking agent, a urea crosslinking agent, a metal alkoxide crosslinking agent, a metal chelate crosslinking agent. , Metal salt crosslinking agents, carbodiimide crosslinking agents, oxazoline crosslinking agents, aziridine crosslinking agents, amine crosslinking agents, and the like, and isocyanate crosslinking agents and epoxy crosslinking agents are preferred.
- a crosslinking agent can be used individually or in combination of 2 or more types. In addition, the usage-amount of a crosslinking agent is not restrict
- isocyanate-based crosslinking agent examples include lower aliphatic polyisocyanates such as 1,2-ethylene diisocyanate, 1,4-butylene diisocyanate, and 1,6-hexamethylene diisocyanate; cyclopentylene diisocyanate, cyclohexylene diisocyanate, Cycloaliphatic polyisocyanates such as isophorone diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated xylene diisocyanate; 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4'- Aromatic polyisocyanates such as diphenylmethane diisocyanate and xylylene diisocyanate, and the like.
- lower aliphatic polyisocyanates such as 1,2-ethylene diisocyanate, 1,4-butylene diisocyanate, and 1,6-hexamethylene diisocyanate
- epoxy crosslinking agent examples include N, N, N ′, N′-tetraglycidyl-m-xylenediamine, diglycidylaniline, 1,3-bis (N, N-glycidylaminomethyl) cyclohexane, 1,6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether, ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, sorbitol polyglycidyl ether, glycerol polyglycidyl ether , Pentaerythritol polyglycidyl ether, polyglycerol polyglycidyl ether, sorbitan polyglycidyl ether, trimethylolpropane poly In addition to lysidyl ether, a
- the pressure-sensitive adhesive layer is formed, for example, by using a conventional method of forming a sheet-like layer by mixing a pressure-sensitive adhesive (pressure-sensitive adhesive) and, if necessary, a solvent or other additives. be able to. Specifically, for example, a method of applying a mixture containing a pressure-sensitive adhesive and, if necessary, a solvent and other additives onto the substrate, and applying the mixture onto an appropriate separator (such as release paper)
- the pressure-sensitive adhesive layer can be formed by a method of forming a pressure-sensitive adhesive layer and transferring (transferring) it onto the substrate.
- the thickness of the pressure-sensitive adhesive layer is not particularly limited, and is, for example, about 5 ⁇ m to 300 ⁇ m (preferably 5 ⁇ m to 200 ⁇ m, more preferably 5 ⁇ m to 100 ⁇ m, particularly preferably 7 ⁇ m to 50 ⁇ m). When the thickness of the pressure-sensitive adhesive layer is within the above range, an appropriate adhesive force can be exhibited.
- the pressure-sensitive adhesive layer may be either a single layer or multiple layers.
- the sheet-shaped resin composition 16 has a function of sealing a gap between the chip 20 (see FIG. 7) and the mounting substrate 22 (see FIG. 7) formed by dicing the wafer 11 while having ultraviolet curing properties.
- the imparting of ultraviolet curable properties to the sheet-like resin composition 16 can be performed by introducing an ultraviolet curable polymer.
- the sheet-like resin composition 16 may have thermosetting properties as well as ultraviolet curing properties. By further thermosetting by heating after UV curing, the reliability of the semiconductor device can be improved.
- UV curable polymer examples include a polymer in which a carbon-carbon double bond is introduced into a polymer side chain, main chain, or main chain terminal as a base polymer.
- the base polymer having a carbon-carbon double bond is preferably one having an acrylic polymer as a basic skeleton.
- the acrylic polymer include (meth) acrylic acid alkyl esters (for example, methyl ester, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, s-butyl ester, t-butyl ester, pentyl ester, Isopentyl ester, hexyl ester, heptyl ester, octyl ester, 2-ethylhexyl ester, isooctyl ester, nonyl ester, decyl ester, isodecyl ester, undecyl ester, dodecyl ester, tridecyl ester, tetradecyl ester, hexadecyl ester , Octadecyl ester, eicosyl
- an ultraviolet curable type containing an alkyl group having 7 to 18 carbon atoms as an alkyl group of an acrylic acid alkyl ester that is a structural unit of an acrylic polymer that forms a pressure-sensitive adhesive layer of a dicing tape, and is contained in a sheet-shaped resin composition.
- the acrylic polymer contains units corresponding to other monomer components copolymerizable with the (meth) acrylic acid alkyl ester or cycloalkyl ester, if necessary, for the purpose of modifying cohesive force, heat resistance and the like. You may go out.
- Such monomer components include, for example, carboxyl group-containing monomers such as acrylic acid, methacrylic acid, carboxyethyl (meth) acrylate, carboxypentyl (meth) acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid; maleic anhydride Acid anhydride monomers such as itaconic anhydride; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate Hydroxyl group-containing monomers such as 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate, (4-hydroxymethylcyclohexyl) methyl (meth) acrylate; Styrene Contains sulfonic acid groups such as phonic acid, allyl sulf
- a polyfunctional monomer or the like can be included as a monomer component for copolymerization as necessary.
- examples of such polyfunctional monomers include hexanediol di (meth) acrylate, (poly) ethylene glycol di (meth) acrylate, (poly) propylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, Pentaerythritol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, urethane (meth) An acrylate etc. are mentioned. These polyfunctional monomers can also be used alone or in combination of two or more. The amount of the polyfunctional monomer used is preferably
- the acrylic polymer can be obtained by subjecting a single monomer or a mixture of two or more monomers to polymerization.
- the polymerization can be performed by any method such as solution polymerization, emulsion polymerization, bulk polymerization, suspension polymerization and the like.
- the content of the low molecular weight substance is preferably small.
- the weight average molecular weight of the acrylic polymer is preferably 100,000 or more, more preferably about 200,000 to 3,000,000, and particularly preferably about 300,000 to 1,000,000.
- the method for introducing the carbon-carbon double bond into the acrylic polymer is not particularly limited, and various methods can be adopted.
- the carbon-carbon double bond can be easily introduced into the polymer side chain for easy molecular design.
- a compound having a functional group capable of reacting with the functional group and a carbon-carbon double bond is converted into an ultraviolet curable carbon-carbon double bond.
- combinations of these functional groups include carboxylic acid groups and epoxy groups, carboxylic acid groups and aziridyl groups, hydroxyl groups and isocyanate groups, and the like.
- a combination of a hydroxyl group and an isocyanate group is preferable because of easy tracking of the reaction.
- the functional group may be on either side of the acrylic polymer and the compound as long as the combination of these functional groups generates an acrylic polymer having the carbon-carbon double bond.
- it is preferable that the acrylic polymer has a hydroxyl group and the compound has an isocyanate group.
- examples of the isocyanate compound having a carbon-carbon double bond include methacryloyl isocyanate, 2-methacryloyloxyethyl isocyanate, m-isopropenyl- ⁇ , ⁇ -dimethylbenzyl isocyanate, and the like.
- the acrylic polymer a copolymer obtained by copolymerizing the above-exemplified hydroxy group-containing monomers, ether compounds of 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, diethylene glycol monovinyl ether, or the like is used.
- the base polymer having a carbon-carbon double bond can be used alone, but an ultraviolet curable monomer component or oligomer component can be blended to such an extent that the characteristics are not deteriorated.
- the UV-curable oligomer component and the like are usually in the range of 30 parts by weight, preferably 0 to 10 parts by weight, with respect to 100 parts by weight of the base polymer.
- the ultraviolet curable polymer is preferably used in combination with a photopolymerization initiator in order to be cured by ultraviolet irradiation.
- the photopolymerization initiator include 4- (2-hydroxyethoxy) phenyl (2-hydroxy-2-propyl) ketone, ⁇ -hydroxy- ⁇ , ⁇ '-dimethylacetophenone, 2-methyl-2-hydroxypropio ⁇ -ketol compounds such as phenone and 1-hydroxycyclohexyl phenyl ketone; methoxyacetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxyacetophenone, 2-methyl-1- [4- ( Acetophenone compounds such as methylthio) -phenyl] -2-morpholinopropane-1; benzoin ether compounds such as benzoin ethyl ether, benzoin isopropyl ether and anisoin methyl ether; ketal compounds such as benzyldimethyl ketal;
- the ultraviolet curable polymer can be used in combination with the above-mentioned crosslinking agent contained in the pressure-sensitive adhesive for forming the dicing tape.
- sheet-like resin composition and other constituent materials examples include thermoplastic resins and thermosetting resins.
- thermoplastic resin examples include natural rubber, butyl rubber, isoprene rubber, chloroprene rubber, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer, polybutadiene resin, polycarbonate resin, heat Examples thereof include plastic polyimide resins, polyamide resins such as 6-nylon and 6,6-nylon, phenoxy resins, saturated polyester resins such as PET and PBT, polyamideimide resins, and fluororesins. These thermoplastic resins can be used alone or in combination of two or more.
- thermosetting resin examples include phenol resin, amino resin, unsaturated polyester resin, epoxy resin, polyurethane resin, silicone resin, and thermosetting polyimide resin. These resins can be used alone or in combination of two or more. In particular, an epoxy resin containing a small amount of ionic impurities that corrode the semiconductor chip is preferable. Moreover, as a hardening
- the epoxy resin is not particularly limited as long as it is generally used as an adhesive composition, for example, bisphenol A type, bisphenol F type, bisphenol S type, brominated bisphenol A type, hydrogenated bisphenol A type, bisphenol AF type.
- novolac type epoxy resins novolac type epoxy resins, biphenyl type epoxy resins, trishydroxyphenylmethane type resins or tetraphenylolethane type epoxy resins are particularly preferred. This is because these epoxy resins are rich in reactivity with a phenol resin as a curing agent and are excellent in heat resistance and the like.
- the phenol resin acts as a curing agent for the epoxy resin.
- a phenol novolac resin, a phenol aralkyl resin, a cresol novolac resin, a tert-butylphenol novolac resin, a novolak type phenol resin such as a nonylphenol novolac resin examples include resol-type phenolic resins and polyoxystyrenes such as polyparaoxystyrene. These can be used alone or in combination of two or more. Of these phenol resins, phenol novolac resins and phenol aralkyl resins are particularly preferred. This is because the sealing reliability can be improved.
- the compounding ratio of the epoxy resin and the phenol resin is preferably such that, for example, the hydroxyl group in the phenol resin is 0.5 to 2.0 equivalents per equivalent of the epoxy group in the epoxy resin component. More preferred is 0.8 to 1.2 equivalents. That is, if the blending ratio of both is out of the above range, sufficient curing reaction does not proceed and the properties of the cured epoxy resin are likely to deteriorate.
- thermosetting acceleration catalyst for epoxy resin and phenol resin is not particularly limited, and can be appropriately selected from known thermosetting acceleration catalysts.
- stimulation catalyst can be used individually or in combination of 2 or more types.
- thermosetting acceleration catalyst for example, an amine-based curing accelerator, a phosphorus-based curing accelerator, an imidazole-based curing accelerator, a boron-based curing accelerator, a phosphorus-boron-based curing accelerator, or the like can be used.
- an inorganic filler can be appropriately blended in the sheet-like resin composition 16.
- the blending of the inorganic filler makes it possible to impart conductivity, improve thermal conductivity, adjust the storage elastic modulus, and the like.
- the inorganic filler examples include silica, clay, gypsum, calcium carbonate, barium sulfate, alumina, beryllium oxide, silicon carbide, silicon nitride, and other ceramics, aluminum, copper, silver, gold, nickel, chromium, lead. And various inorganic powders made of metals such as tin, zinc, palladium, solder, or alloys, and other carbons. These can be used alone or in combination of two or more. Among these, silica, particularly fused silica is preferably used.
- the average particle size of the inorganic filler is preferably in the range of 0.1 to 30 ⁇ m, and more preferably in the range of 0.5 to 25 ⁇ m. In the present invention, inorganic fillers having different average particle sizes may be used in combination.
- the average particle size is a value determined by a photometric particle size distribution meter (manufactured by HORIBA, apparatus name: LA-910).
- the blending amount of the inorganic filler is preferably set to 100 to 1400 parts by weight with respect to 100 parts by weight of the organic resin component. Particularly preferred is 230 to 900 parts by weight.
- the blending amount of the inorganic filler is 100 parts by weight or more, heat resistance and strength are improved.
- liquidity is securable by setting it as 1400 weight part or less. Thereby, it can prevent that adhesiveness and embedding fall.
- additives can be appropriately added to the sheet-like resin composition 16 as necessary.
- other additives include flame retardants, silane coupling agents, ion trapping agents, pigments such as carbon black, and the like.
- flame retardant include antimony trioxide, antimony pentoxide, brominated epoxy resin, and the like. These can be used alone or in combination of two or more.
- silane coupling agent include ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, and the like.
- an elastomer component may be added as an additive for viscosity adjustment.
- the elastomer component is not particularly limited as long as it thickens the resin.
- various acrylic copolymers such as polyacrylic acid ester; polystyrene-polyisobutylene copolymer, styrene acrylate copolymer, etc.
- Examples of the elastomer having a styrene skeleton include rubber polymers such as butadiene rubber, styrene-butadiene rubber (SBR), ethylene-vinyl acetate copolymer (EVA), isoprene rubber, and acrylonitrile rubber.
- An organic acid can also be added for the purpose of removing the oxide film of the solder during mounting.
- the viscosity of the sheet-shaped resin composition 16 at 120 ° C. is preferably 100 to 10,000 Pa ⁇ s, and more preferably 500 to 3000 Pa ⁇ s.
- the viscosity is 100 Pa ⁇ s or more, the surface shape can be prevented from being greatly deformed during thermosetting.
- it can suppress that the fluidity
- the thickness of the sheet-like resin composition 16 (total thickness in the case of multiple layers) is not particularly limited, but is preferably 10 ⁇ m or more and 1000 ⁇ m or less in consideration of the strength and fillability of the cured resin.
- the thickness of the sheet-shaped resin composition 16 can be appropriately set in consideration of the width of the gap between the chip 20 and the mounting substrate 22.
- the sheet-like resin composition 16 is produced as follows, for example. First, a resin composition solution that is a material for forming the sheet-shaped resin composition 16 is prepared. As described above, the resin composition solution contains the resin composition, filler, and other various additives.
- the resin composition solution is applied on the base separator so as to have a predetermined thickness to form a coating film, and then the coating film is dried under predetermined conditions to form a sheet-shaped resin composition 16.
- a coating method For example, roll coating, screen coating, gravure coating, etc. are mentioned.
- drying conditions for example, a drying temperature of 70 to 160 ° C. and a drying time of 1 to 5 minutes are performed.
- the dicing tape-integrated sheet-shaped resin composition 14 is obtained by bonding the dicing tape 15 and the sheet-shaped resin composition 16 together. Bonding can be performed by, for example, pressure bonding.
- the lamination temperature is not particularly limited, and is preferably 30 to 50 ° C., for example, and more preferably 35 to 45 ° C.
- the linear pressure is not particularly limited, and is preferably 0.1 to 20 kgf / cm, and more preferably 1 to 10 kgf / cm.
- it can obtain also by apply
- Step D-Bonding step Next, in the bonding step (step D), the first main surface 11a of the wafer 10 with the support member and the sheet-shaped resin composition 16 of the dicing tape-integrated sheet-shaped resin composition 14 are bonded (see FIG. 3). ). Bonding can be performed by, for example, pressure bonding.
- the lamination temperature is not particularly limited, and is preferably 20 to 120 ° C., and more preferably 40 to 100 ° C.
- the pressure is not particularly limited, and is preferably 0.05 to 1.0 MPa, and more preferably 0.1 to 0.8 MPa. Bonding is preferably performed under reduced pressure.
- the decompression condition is preferably 5 to 1000 Pa, more preferably 10 to 500 Pa.
- it can carry out in a pressure reduction chamber, for example.
- Step S-UV curing step In the ultraviolet curing step (step S), the sheet-shaped resin that is an area that does not overlap the wafer 11 of the sheet-shaped resin composition 16 when the laminated body obtained by bonding the wafer 11 and the sheet-shaped resin composition 16 is viewed in plan view.
- the peripheral edge portion P of the composition 16 is cured by ultraviolet irradiation (see FIG. 4).
- the irradiation of the sheet-shaped resin composition 16 with ultraviolet rays may be performed from the wafer 11 side or from the dicing tape 15 side. From the viewpoint of efficiently preventing the ultraviolet irradiation to the central portion of the sheet-shaped resin composition 16, it is preferable that the irradiation of the ultraviolet rays to the sheet-shaped resin composition 16 is performed from the wafer 11 side. This is because the wafer 11 itself becomes a masking for the central portion of the sheet-like resin composition 16 and it is not necessary to provide a separate masking.
- the masking corresponding to a wafer shape is arrange
- the irradiation dose of ultraviolet rays although the peripheral portion P of the sheet-like resin composition 16 is not particularly limited if the curing is preferably 50 ⁇ 1000mJ / cm 2, more preferably 100 ⁇ 600mJ / cm 2.
- the peripheral portion P of the sheet-like resin composition 16 can be sufficiently cured to such an extent that it is not dissolved by the cleaning liquid, and high adhesion to the dicing tape due to excessive irradiation heat generation. Can be prevented.
- This ultraviolet curing step may be performed after the bonding step and before the cleaning step described later. Therefore, the ultraviolet curing step may be performed not only after the bonding step and before the supporting member peeling step but also after the supporting member peeling step and before the cleaning step. Among these, from the viewpoint of masking with a wafer during ultraviolet irradiation and prevention of sticking to a temporary fixing material, it is preferable to carry out after the bonding step and before the supporting member peeling step.
- Step E-Support member peeling step Next, in the support member peeling step (step E), the support member 17 is peeled from the wafer 11 (see FIG. 5). At this time, a force may be applied in a direction in which the support 12 is sucked away from the wafer 11.
- the treatment solvent dissolution, ultraviolet curing, thermal curing, heat By performing foaming, laser firing, blocking of strong adhesion, etc., it is possible to quickly peel off with a lighter force, and it is possible to reduce the residue of the temporary fixing layer 13 on the wafer 11, and as a result The production efficiency of the semiconductor device can be improved.
- Step F-Cleaning step In the cleaning process (process F), the second main surface 11b of the wafer 11 is cleaned, and the residue of the sheet-like resin composition 16 on the wafer 11 is removed. Since the peripheral edge portion P of the sheet-shaped resin composition 16 is UV-cured prior to the cleaning step and the dissolution by the cleaning liquid is suppressed, the influence of the cleaning liquid on the central portion of the sheet-shaped resin composition 16 can be reduced. .
- the cleaning liquid (solvent) for cleaning can be appropriately selected according to the material for forming the temporary fixing layer 13.
- the forming material for forming the temporary fixing layer 13 is a polyimide resin
- DMAc N-dimethylacetamide
- NMP N-methyl-2-pyrrolidone
- DMF N-dimethylformamide
- the forming material for forming the temporary fixing layer 13 is a silicone resin, it is preferable to use toluene, methylene chloride, trichloroethane, or the like as the solvent.
- the forming material for forming the temporary fixing layer 13 is an aliphatic olefin resin, it is preferable to use toluene, ethyl acetate, or the like as the solvent.
- the forming material for forming the temporary fixing layer 13 is a hydrogenated styrene thermoplastic elastomer, it is preferable to use toluene, ethyl acetate or the like as the solvent.
- the forming material for forming the temporary fixing layer 13 is an acrylic resin, it is preferable to use acetone, methyl ketyl ketone, methanol, toluene, ethyl acetate, or the like as the solvent.
- step G the wafer 11 is diced together with the sheet-shaped resin composition 16 to obtain the chip 20 with the sheet-shaped resin composition 16 (see FIG. 6).
- the dicing conventionally known blade dicing or laser dicing can be employed.
- the chip 20 with the sheet-shaped resin composition 16 is picked up and arranged on the mounting substrate 22, and the electrode (not shown) included in the chip 20 and the mounting substrate 22 have.
- An electrode (not shown) is joined via a bump (connection member) 21 formed on the electrode of the chip 20, and the gap between the chip 20 and the mounting substrate 22 is sealed with the sheet-like composition 16.
- Stop (underfill) see FIG. 7).
- the sheet-shaped resin composition 16 of the chip 20 with the sheet-shaped resin composition 16 is arranged to face the mounting substrate 22, and then, using a flip chip bonder, the sheet-shaped resin composition 16 is arranged. This can be done by applying pressure from the attached tip 20 side.
- the composition 16 is sealed (underfilled).
- the bonding temperature is preferably 50 to 300 ° C, more preferably 100 to 280 ° C.
- the bonding pressure is preferably 0.02 to 10 MPa, more preferably 0.05 to 5 MPa.
- Example 1 Preparation of sheet-shaped resin composition> The following (a) to (g) were dissolved or dispersed in methyl ethyl ketone to obtain a resin composition solution having a solid content concentration of 23.6% by weight.
- Epoxy resin 2 (trade name “Epicoat 828”) Manufactured by JER Corporation): 24 parts
- phenolic resin trade name “Millex XLC-4L”, manufactured by Mitsui Chemicals
- spherical silica (trade name “SO-25R”, Ad Co., Ltd.) Matex): 257 parts
- Imidazole catalyst trade name “2PHZ-PW”, manufactured by Shik
- the ultraviolet curable acrylic polymer was prepared as follows. First, 100 parts of butyl acrylate (hereinafter referred to as “BA”) and 78 parts of ethyl acrylate (hereinafter referred to as “EA”) are placed in a reaction vessel equipped with a cooling pipe, a nitrogen introduction pipe, a thermometer, and a stirring device. Then, 40 parts of 2-hydroxyethyl acrylate (hereinafter referred to as “HEA”), 0.3 part of benzoyl peroxide, and 65 parts of toluene were placed in a nitrogen stream and polymerized at 61 ° C. for 6 hours. An acrylic polymer A having an average molecular weight of 500,000 was obtained.
- acrylic polymer A ′ 8 parts of a polyisocyanate compound (trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.) and a photopolymerization initiator (trade name “Irgacure 651”, Ciba Special) 5 parts) (manufactured by T Chemicals) was added to prepare an ultraviolet curable acrylic polymer.
- a polyisocyanate compound trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.
- a photopolymerization initiator trade name “Irgacure 651”, Ciba Special
- the prepared resin composition solution was applied on a release film (release liner) made of a polyethylene terephthalate film having a thickness of 50 ⁇ m after the silicone release treatment, and then dried at 130 ° C. for 2 minutes. As a result, a circular sheet-shaped resin composition A having a thickness of 20 ⁇ m and a diameter of 230 mm was produced.
- the pressure-sensitive adhesive solution prepared above was applied on the surface of the PET release liner that had been subjected to the silicone treatment, and heat-crosslinked at 120 ° C. for 2 minutes to form a pressure-sensitive adhesive layer having a thickness of 10 ⁇ m. Subsequently, a polyolefin film having a thickness of 100 ⁇ m was bonded to the surface of the pressure-sensitive adhesive layer. Then, after storing at 50 ° C. for 24 hours, the portion to which the sheet-like adhesive composition was attached was irradiated with ultraviolet rays (300 mJ / cm 2 ) in advance to produce a dicing tape A according to this example.
- ⁇ Preparation of dicing tape integrated sheet-shaped resin composition> The sheet-shaped resin composition A was bonded onto the pressure-sensitive adhesive layer A of the dicing tape A using a hand roller to prepare a dicing tape-integrated sheet-shaped resin composition A.
- ⁇ Preparation of temporary fixing layer> For 100 parts of acrylic polymer A ′, 1 part of polyisocyanate compound (trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.) and photopolymerization initiator (trade name “Irgacure 651”, Ciba Specialty Chemicals) 2 parts) was added to prepare a pressure-sensitive adhesive solution, and a temporary fixing layer A having a thickness of 100 ⁇ m was obtained using this pressure-sensitive adhesive solution.
- polyisocyanate compound trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.
- photopolymerization initiator trade name “Irgacure 651”, Ciba Specialty Chemicals” 2 parts
- the temporary fixing layer A was attached to a silicon wafer having a diameter of 195 mm and a thickness of 725 ⁇ m.
- the pasting was performed by roll lamination at a temperature of 90 ° C. and a pressure of 0.1 MPa.
- a pedestal (a silicon wafer having a diameter of 200 mm and a thickness of 726 ⁇ m) as a support was attached to the other surface of the temporary fixing layer A to which the silicon wafer was attached.
- Pasting was performed at a temperature of 120 ° C. and a pressure of 0.3 MPa. Thereby, the temporary fix
- a wafer with a supporting member in which the base, the temporary fixing layer A, and the silicon wafer were sequentially laminated was obtained.
- Ultraviolet rays were irradiated from the wafer side of the ground laminate at an irradiation amount of 450 mJ / cm 2 to cure the peripheral portion of the sheet-shaped resin composition.
- the adhesive layer A was immersed in methyl ethyl ketone (MEK) for 30 seconds and taken out. Subsequently, the pedestal was peeled off using tweezers.
- MEK methyl ethyl ketone
- the exposed surface of the wafer was washed with waste cloth with MEK (50 mL ⁇ 3 times), and finally dried in a dryer at 100 ° C. for 30 minutes.
- the periphery of the sheet-shaped resin composition at this time was observed with an optical microscope (100 times), and the presence or absence of dissolution of the sheet-shaped resin composition was confirmed.
- Example 1 Comparative Example 1
- the process evaluation was performed in the same manner as in Example 1 except that the peripheral edge of the sheet-shaped resin composition was not irradiated with ultraviolet rays.
- Example 1 it was found that dissolution of the peripheral portion of the sheet-shaped resin composition was suppressed, and a highly reliable semiconductor device could be manufactured with a high yield.
- Comparative Example 1 in addition to the peripheral portion of the sheet-shaped resin composition, part of the central portion was dissolved, and it was found that the function of the sheet-shaped resin composition could be impaired.
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Abstract
Description
前記ウェハの第1主面とは反対側の第2主面と、支持体上に仮止め層が形成された支持部材とを該仮止め層を介して貼り合わせて支持部材付きウェハを形成する工程Bと、
ダイシングテープ上に紫外線硬化型のシート状樹脂組成物が積層されたダイシングテープ一体型シート状樹脂組成物を準備する工程Cと、
前記支持部材付きウェハの前記ウェハの第1主面と、前記ダイシングテープ一体型シート状樹脂組成物の前記シート状樹脂組成物とを貼り合わせる工程Dと、
前記工程Dの後、前記支持部材を前記ウェハから剥離する工程Eと、
前記工程Eの後、前記ウェハの第2主面を洗浄する工程Fと
を含み、
さらに、前記工程Dの後であってかつ前記工程Fの前に、平面視で前記ウェハと重複しない前記シート状樹脂組成物の周縁部を紫外線照射により硬化させる工程Sを含む半導体装置の製造方法である。
工程A:少なくとも第1主面に接続部材が形成されたウェハを準備する;
工程B:前記ウェハの第1主面とは反対側の第2主面と、支持体上に仮止め層が形成された支持部材とを該仮止め層を介して貼り合わせて支持部材付きウェハを形成する;
工程C:ダイシングテープ上に紫外線硬化型のシート状樹脂組成物が積層されたダイシングテープ一体型シート状樹脂組成物を準備する;
工程D:前記支持部材付きウェハの前記ウェハの第1主面と、前記ダイシングテープ一体型シート状樹脂組成物の前記シート状樹脂組成物とを貼り合わせる;
工程E:前記工程Dの後、前記支持部材を前記ウェハから剥離する;及び
工程F:前記工程Eの後、前記ウェハの第1主面を洗浄する。
工程S:前記工程Dの後であってかつ前記工程Fの前に、平面視で前記ウェハと重複しない前記シート状樹脂組成物の周縁部を紫外線照射により硬化させる。
工程Aでは、少なくとも第1主面11aに接続部材(図示せず)が形成されたウェハ11を準備する。ウェハ11としては、シリコンウェハ、ゲルマニウムウェハ、ガリウム-ヒ素ウェハ、ガリウム-リンウェハ、ガリウム-ヒ素-アルミニウムウェハ等を挙げることができる。
支持部材付きウェハ準備工程(工程B)では、ウェハ11の第1主面11aとは反対側の第2主面11bと、支持体12上に仮止め層13が形成された支持部材17とを該仮止め層13を介して貼り合わせて支持部材付きウェハ10を形成する(図1参照)。支持部材付きウェハ10の形成は、例えば、回路形成面及び回路非形成面(裏面)を有するウェハ11の回路形成面を支持部材17の仮止め層13と接合する工程(支持部材接合工程)、支持体12と接合したウェハの回路非形成面を研削する工程(ウェハ裏面研削工程)、及び回路非形成面を研削したウェハの回路非形成面に加工(例えば、TSV(貫通電極)形成、電極形成、金属配線形成)を施す工程(回路非形成面加工工程)を含む手順等により行うことができる。ウェハの回路非形成面に加工を施す工程としては、より具体的には、電極等の形成のための金属スパッタリング、金属スパッタリング層をエッチングするウェットエッチング、金属配線形成のマスクとするためのレジストの塗布、露光、及び現像によるパターンの形成、レジストの剥離、ドライエッチング、金属めっきの形成、TSV形成のためのシリコンエッチング、シリコン表面の酸化膜形成等、従来公知のプロセスが挙げられる。なお、ウェハ11に支持体12を接合するのは、ウェハ研削の際の強度を確保するためである。また、上記加工を施す工程には、高温での処理(例えば、250℃以上)が含まれる。そのため、支持体12にはある程度の強度を有しかつ耐熱性を有するもの(例えば、耐熱ガラス)が用いられる。
支持体12としては、ある程度の強度を有し、かつ、耐熱性を有するものを用いることができる。支持体12としては、例えば、耐熱ガラス、耐熱エンジニアプラスチック、ウェハ(例えば、ウェハ11)等を挙げることができる。
仮止め層13を構成する粘着剤組成物としては、上記ウェハ裏面研削工程や、上記回路非形成面加工工程を行なう際に、支持体11及びウェハ12から剥離せず、かつ上記工程E(支持部材剥離工程)において支持部材17をウェハ11から剥離可能である限り、特に限定されず公知の粘着剤組成物を用いることができる。このような仮止め層13を形成するための形成材料は、例えば、溶剤溶解型粘着剤組成物(仮止め層を溶剤で溶解して剥離)、紫外線硬化型粘着剤組成物(仮止め層を紫外線照射により硬化させ、粘着力を低下させて剥離)、熱硬化型粘着剤組成物(仮止め層を熱硬化させ、粘着力を低下させて剥離)、熱発泡剥離型粘着剤組成物(仮止め層を熱発泡させ、生じた表面凹凸により粘着力を低下させて剥離)、レーザー焼成剥離型粘着剤組成物(仮止め層をレーザーにより焼成し、粘着力を低下させて剥離)、仮止め層の周縁部を強粘着とし、周縁部より内側を弱粘着として、剥離の際に周縁部の粘着力を遮断して剥離する多段階粘着力組成物等が挙げられる。これらの組成物に含まれる具体的な樹脂としては、ポリイミド樹脂、シリコーン樹脂、脂肪族オレフィン系樹脂、水添スチレン系熱可塑性エラストマー、アクリル樹脂等を挙げることができる。
次に、ダイシングテープ一体型シート状樹脂組成物準備工程(工程C)では、ダイシングテープ15上に紫外線硬化型のシート状樹脂組成物16が積層されたダイシングテープ一体型シート状樹脂組成物14を準備する(図2参照)。シート状樹脂組成物16の平面視での形状は、特に限定されないが、円形、矩形等とすることができる。シート状樹脂組成物16の大きさや形状としては、特に限定されないものの、例えば、ウェハ11の平面視形状が円形状(例えば、直径が290mm)である場合、ウェハ11よりも径が大きい円形状(例えば、直径が300mm)であることが好ましい。この場合、ウェハ11とシート状樹脂組成物16とは、中心が揃うようにして積層することが好ましい。
前記ダイシングテープ15は、基材上に粘着剤層が形成されて構成されている。前記基材は粘着剤層等の支持母体として用いることができる。前記基材としては、例えば、紙などの紙系基材;布、不織布、フェルト、ネットなどの繊維系基材;金属箔、金属板などの金属系基材;プラスチックフィルムなどのプラスチック系基材;ゴムシートなどのゴム系基材;発泡シートなどの発泡体;これらの積層体(例えば、プラスチック系基材と他の基材との積層体や、プラスチックフィルム同士の積層体)等の適宜な薄葉体を用いることができる。本発明では、基材としては、プラスチック系基材を好適に用いることができる。このようなプラスチック材における素材としては、例えば、ポリエチレン(PE)、ポリプロピレン(PP)、エチレン-プロピレン共重合体等のオレフィン系樹脂;エチレン-酢酸ビニル共重合体(EVA)、アイオノマー樹脂、エチレン-(メタ)アクリル酸共重合体、エチレン-(メタ)アクリル酸エステル(ランダム、交互)共重合体等のエチレンをモノマー成分とする共重合体;ポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)、ポリブチレンテレフタレート(PBT)等のポリエステル;アクリル系樹脂;ポリ塩化ビニル(PVC);ポリウレタン;ポリカーボネート;ポリフェニレンスルフィド(PPS);ポリアミド(ナイロン)、全芳香族ポリアミド(アラミド)等のアミド系樹脂;ポリエーテルエーテルケトン(PEEK);ポリイミド;ポリエーテルイミド;ポリ塩化ビニリデン;ABS(アクリロニトリル-ブタジエン-スチレン共重合体);セルロース系樹脂;シリコーン樹脂;フッ素樹脂などが挙げられる。
シート状樹脂組成物16は、紫外線硬化性を有するとともに、ウェハ11がダイシングされて形成されるチップ20(図7参照)と搭載用基板22(図7参照)との間隙を封止する機能を有する。シート状樹脂組成物16への紫外線硬化性の付与は、紫外線硬化型ポリマーの導入により行うことができる。また、シート状樹脂組成物16は、紫外線硬化性を有するとともに、熱硬化性を有していてもよい。紫外線硬化後の加熱によってさらに熱硬化させることにより、半導体装置の信頼性を向上させることができる。
本実施形態に係るダイシングテープ一体型シート状樹脂組成物14は、ダイシングテープ15とシート状樹脂組成物16とを貼り合わせることにより得られる。貼り合わせは、例えば圧着により行うことができる。このとき、ラミネート温度は特に限定されず、例えば30~50℃が好ましく、35~45℃がより好ましい。また、線圧は特に限定されず、例えば0.1~20kgf/cmが好ましく、1~10kgf/cmがより好ましい。また、ダイシングテープ15上に直接、シート状樹脂組成物16を形成するための樹脂組成物溶液を塗布し、乾燥させることによっても得ることができる。
次に、貼り合わせ工程(工程D)では、支持部材付きウェハ10の第1主面11aと、ダイシングテープ一体型シート状樹脂組成物14のシート状樹脂組成物16とを貼り合わせる(図3参照)。貼り合わせは、例えば圧着により行うことができる。このとき、ラミネート温度は特に限定されず、例えば、20~120℃が好ましく、40~100℃がより好ましい。また、圧力は特に限定されず、例えば0.05~1.0MPaが好ましく、0.1~0.8MPaがより好ましい。貼り合わせは、減圧下で行なうことが好ましい。減圧下にて行なうと、ウェハ11とシート状樹脂組成物16との界面のボイド発生を抑制でき、より好適にウェハ11とシート状樹脂組成物16とを貼り合わせることができる。減圧条件としては、5~1000Paが好ましく、10~500Paがより好ましい。この工程Cを減圧条件で行なう場合、例えば、減圧チャンバー内で行なうことができる。
紫外線硬化工程(工程S)では、ウェハ11とシート状樹脂組成物16とを貼り合わせた積層体を平面視した際に、シート状樹脂組成物16のウェハ11と重複しない領域であるシート状樹脂組成物16の周縁部Pを紫外線照射により硬化させる(図4参照)。これにより、支持部材17のウェハ11からの剥離後、ウェハ11に残存する仮止め層13の残留物を洗浄する際にも、シート状樹脂組成物16の周縁部Pでは洗浄液による溶解を抑制することができ、中央部におけるシート状樹脂組成物の機能(チップと基板との間の空間の充填)を維持することができるとともに、シート状樹脂組成物16の溶解による他の部材の汚染を防止して後工程を効率良く行うことができる。
次に、支持部材剥離工程(工程E)では、支持部材17をウェハ11から剥離する(図5参照)。この際、支持体12を吸引してウェハ11から引き離す方向に力を加えてもよい。所定の処理により仮止め層13の粘着力を低下させることができる場合には、仮止め層13の粘着力低下のメカニズムに応じた処理(上述のような溶剤溶解、紫外線硬化、熱硬化、熱発泡、レーザー焼成、強粘着の遮断等)を行うことにより、より軽い力で速やかに剥離することができ、また、仮止め層13のウェハ11への残留物を低減させることができ、その結果、半導体装置の生産効率を向上させることができる。
洗浄工程(工程F)では、ウェハ11の第2主面11bを洗浄し、ウェハ11におけるシート状樹脂組成物16の残留物を除去する。シート状樹脂組成物16の周縁部Pは洗浄工程に先だって紫外線硬化されており、洗浄液による溶解が抑制されているので、シート状樹脂組成物16の中央部に対する洗浄液の影響を低減させることができる。
次に、ダイシング工程(工程G)では、ウェハ11をシート状樹脂組成物16とともにダイシングして、シート状樹脂組成物16付きチップ20を得る(図6参照)。ダイシングは従来公知のプレードダイシングやレーザーダイシングを採用することができる。
次に、アンダーフィル工程(工程H)では、シート状樹脂組成物16付きチップ20をピックアップして搭載用基板22に配置し、チップ20が有する電極(図示せず)と搭載用基板22が有する電極(図示せず)とを、チップ20が有する電極上に形成されたパンプ(接続部材)21を介して接合するとともに、チップ20と搭載用基板22との間隙をシート状組成物16により封止(アンダーフィル)する(図7参照)。具体的には、まず、シート状樹脂組成物16付きチップ20のシート状樹脂組成物16を搭載用基板22に対向させて配置し、次に、フリップチップボンダーを用い、シート状樹脂組成物16付きチップ20側から圧力を加えることにより行なうことができる。これにより、チップ20が有する電極と搭載用基板22が有する電極とが、チップ20が有する電極上に形成されたパンプ21を介して接合するとともに、チップ20と搭載用基板22との間隙がシート状組成物16により封止(アンダーフィル)される。ボンディング温度は50~300℃が好ましく、より好ましくは100~280℃である。また、ボンディング圧力は0.02~10MPaが好ましく、より好ましくは0.05~5MPaである。
<シート状樹脂組成物の作製>
下記(a)~(g)をメチルエチルケトンに溶解ないし分散させ、固形分濃度が23.6重量%の樹脂組成物溶液を得た。
(a)紫外線硬化型アクリル系ポリマー(※):100部
(b)エポキシ樹脂1(商品名「エピコート1004」、JER株式会社製):24部
(c)エポキシ樹脂2(商品名「エピコート828」、JER株式会社製):24部
(d)フェノール樹脂(商品名「ミレックスXLC-4L」、三井化学株式会社製):51部
(e)球状シリカ(商品名「SO-25R」、株式会社アドマテックス製):257部
(f)有機酸(商品名「オルトアニス酸」、東京化成株式会社製):10部
(g)イミダゾール触媒(商品名「2PHZ-PW」、四国化成株式会社製):0.5部
冷却管、窒素導入管、温度計および撹拌装置を備えた反応容器に、アクリル酸2-エチルヘキシル(以下、「2EHA」という。)88.8部、アクリル酸-2-ヒドロキシエチル(以下、「HEA」という。)11.2部、過酸化ベンゾイル0.2部及びトルエン65部を入れ、窒素気流中で61℃にて6時間重合処理をし、重量平均分子量85万のアクリル系ポリマーAを得た。重量平均分子量は下記の通りである。2EHAとHEAとのモル比は、100mol対20molとした。
シート状樹脂組成物Aを、上記ダイシングテープAの粘着剤層A上に、ハンドローラーを用いて貼り合せ、ダイシングテープ一体型シート状樹脂組成物Aを作製した。
アクリル系ポリマーA’100部に対し、ポリイソシアネート化合物(商品名「コロネートL」、日本ポリウレタン(株)製)1部、及び光重合開始剤(商品名「イルガキュア651」、チバ・スペシャルティー・ケミカルズ社製)2部を加えて粘着剤溶液を作製し、この粘着剤溶液を用いて厚さ100μmの仮止め層Aを得た。
仮止め層Aを直径195mm、厚さ725μmのシリコンウェハに貼り付けた。貼り付けは、温度90℃、圧力0.1MPaでロールラミネートにより行った。シリコンウェハが貼り付けられた仮止め層Aのもう一方の面に、支持体としての台座(直径200mm、厚さ726μmのシリコンウェハ)を貼り付けた。貼り付けは、温度120℃、圧力0.3MPaで行った。これにより、仮止め層Aを台座に固定した。以上により、台座、仮止め層A及びシリコンウェハが順次積層された支持部材付きウェハを得た。
プロセス評価においてシート状樹脂組成物の周縁部に紫外線照射を行わなかったこと以外は、実施例1と同様にして、プロセス評価を行なった。
11 ウェハ
11a (ウェハ11の)第1主面
11b (ウェハ11の)第2主面
12 支持体
13 仮止め層
14 ダイシングテープ一体型シート状樹脂組成物
15 ダイシングテープ
16 シート状樹脂組成物
17 支持部材
20 チップ
22 搭載用基板
Claims (8)
- 少なくとも第1主面に接続部材が形成されたウェハを準備する工程Aと、
前記ウェハの第1主面とは反対側の第2主面と、支持体上に仮止め層が形成された支持部材とを該仮止め層を介して貼り合わせて支持部材付きウェハを形成する工程Bと、
ダイシングテープ上に紫外線硬化型のシート状樹脂組成物が積層されたダイシングテープ一体型シート状樹脂組成物を準備する工程Cと、
前記支持部材付きウェハの前記ウェハの第1主面と、前記ダイシングテープ一体型シート状樹脂組成物の前記シート状樹脂組成物とを貼り合わせる工程Dと、
前記工程Dの後、前記支持部材を前記ウェハから剥離する工程Eと、
前記工程Eの後、前記ウェハの第2主面を洗浄する工程Fと
を含み、
さらに、前記工程Dの後であってかつ前記工程Fの前に、平面視で前記ウェハと重複しない前記シート状樹脂組成物の周縁部を紫外線照射により硬化させる工程Sを含む半導体装置の製造方法。 - 前記工程Sにおいて、前記紫外線照射を前記ウェハ側から行う請求項1に記載の半導体装置の製造方法。
- 前記工程Sを、前記工程Dの後であってかつ前記工程Eの前に行う請求項1又は2に記載の半導体装置の製造方法。
- 前記工程Fの後、前記ウェハを前記シート状樹脂組成物とともにダイシングして、シート状樹脂組成物付きチップを得る工程Gをさらに含む請求項1~3のいずれか1項に記載の半導体装置の製造方法。
- 前記工程Gの後、前記シート状樹脂組成物付きチップを搭載用基板に配置し、前記チップが有する接続部材と前記搭載用基板が有する電極とを接合するとともに、前記チップと前記搭載用基板との間隙を前記シート状組成物により封止する工程Hをさらに含む請求項1~4のいずれか1項に記載の半導体装置の製造方法。
- 前記工程Dを減圧下で行う請求項1~5のいずれか1項に記載の半導体装置の製造方法。
- 請求項1~6のいずれか1項に記載の半導体装置の製造方法において用いられるシート状樹脂組成物。
- 請求項1~6のいずれか1項に記載の半導体装置の製造方法において用いられるダイシングテープ一体型シート状樹脂組成物。
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CN109743877B (zh) * | 2016-10-03 | 2022-06-10 | 琳得科株式会社 | 半导体加工用粘着胶带以及半导体装置的制造方法 |
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