WO2014196293A1 - シート状樹脂組成物、裏面研削用テープ一体型シート状樹脂組成物、ダイシングテープ一体型シート状樹脂組成物、半導体装置の製造方法、及び、半導体装置 - Google Patents
シート状樹脂組成物、裏面研削用テープ一体型シート状樹脂組成物、ダイシングテープ一体型シート状樹脂組成物、半導体装置の製造方法、及び、半導体装置 Download PDFInfo
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- WO2014196293A1 WO2014196293A1 PCT/JP2014/062074 JP2014062074W WO2014196293A1 WO 2014196293 A1 WO2014196293 A1 WO 2014196293A1 JP 2014062074 W JP2014062074 W JP 2014062074W WO 2014196293 A1 WO2014196293 A1 WO 2014196293A1
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- resin composition
- sheet
- tape
- shaped resin
- grinding
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- H—ELECTRICITY
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- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7402—Wafer tapes, e.g. grinding or dicing support tapes
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- C09J7/10—Adhesives in the form of films or foils without carriers
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- C09J7/00—Adhesives in the form of films or foils
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- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7402—Wafer tapes, e.g. grinding or dicing support tapes
- H10P72/7404—Wafer tapes, e.g. grinding or dicing support tapes the wafer tape being a laminate of three or more layers, e.g. including additional layers beyond a base layer and an uppermost adhesive layer
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C09J2479/08—Presence of polyamine or polyimide polyimide
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- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7416—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
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- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7422—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support used to protect an active side of a device or wafer
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- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7438—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support with parts of the auxiliary support remaining in the finished device
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- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/744—Details of chemical or physical process used for separating the auxiliary support from a device or a wafer
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- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/744—Details of chemical or physical process used for separating the auxiliary support from a device or a wafer
- H10P72/7442—Separation by peeling
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- H10W72/013—Manufacture or treatment of die-attach connectors
- H10W72/01304—Manufacture or treatment of die-attach connectors using temporary auxiliary members, e.g. using sacrificial coatings or handle substrates
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- H10W72/013—Manufacture or treatment of die-attach connectors
- H10W72/01331—Manufacture or treatment of die-attach connectors using blanket deposition
- H10W72/01336—Manufacture or treatment of die-attach connectors using blanket deposition in solid form, e.g. by using a powder or by laminating a foil
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- H10W72/07231—Techniques
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- H10W72/073—Connecting or disconnecting of die-attach connectors
- H10W72/07331—Connecting techniques
- H10W72/07337—Connecting techniques using a polymer adhesive, e.g. an adhesive based on silicone or epoxy
- H10W72/07338—Connecting techniques using a polymer adhesive, e.g. an adhesive based on silicone or epoxy hardening the adhesive by curing, e.g. thermosetting
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- H10W72/00—Interconnections or connectors in packages
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- H10W72/251—Materials
- H10W72/252—Materials comprising solid metals or solid metalloids, e.g. PbSn, Ag or Cu
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- H10W72/351—Materials of die-attach connectors
- H10W72/353—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics
- H10W72/354—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics comprising polymers
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- H10W74/012—Manufacture or treatment of encapsulations on active surfaces of flip-chip devices, e.g. forming underfills
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- H10W74/15—Encapsulations, e.g. protective coatings characterised by their shape or disposition on active surfaces of flip-chip devices, e.g. underfills
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- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/721—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors
- H10W90/724—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors between a chip and a stacked insulating package substrate, interposer or RDL
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Definitions
- the present invention relates to a sheet-shaped resin composition, a back-grinding tape-integrated sheet-shaped resin composition, a dicing tape-integrated sheet-shaped resin composition, a method for manufacturing a semiconductor device, and a semiconductor device.
- Au—Sn (solder) bonding or Au—Au bonding has been used as electrical bonding between an adherend and a semiconductor element in flip-chip mounting.
- Au—Cu is used for the purpose of cost reduction and the like. Bonding using Cu (copper) as an electrode, such as bonding or Cu—Cu bonding, has been studied (for example, see Patent Document 1).
- the copper electrodes need to be treated at a higher temperature than before. For this reason, when underfilling is performed, durability at high temperatures is also required for materials used for underfilling.
- the present invention has been made in view of the above-mentioned problems, and the purpose thereof is a sheet-shaped resin composition having high-temperature durability, a tape-integrated sheet-shaped resin composition for backside grinding provided with the sheet-shaped resin composition, A dicing tape-integrated sheet-shaped resin composition comprising the sheet-shaped resin composition, a semiconductor device manufacturing method using the sheet-shaped resin composition, and a semiconductor device manufactured using the sheet-shaped resin composition It is to provide.
- the inventors of the present application have studied a sheet-shaped resin composition in order to solve the conventional problems. As a result, when the weight loss rate due to heating is within a specific range, the moisture absorption rate is within a specific range, and a specific organic acid is included within a specific range, the durability at high temperature is excellent, and It has been found that the sheet can be suitably used as a fill sheet, and the present invention has been completed.
- the sheet-shaped resin composition according to the present invention is A sheet-like resin composition used for interface sealing between an adherend and a semiconductor element flip-chip connected on the adherend,
- the weight loss rate when the temperature is raised from 25 ° C. to 300 ° C. at a rate of temperature increase of 10 ° C./min is 2% or less,
- the moisture absorption by the Karl Fischer method is 1% or less,
- An organic acid having an acid dissociation constant in the range of 3.0 to 5.0 is contained in a range of 1 wt% to 10 wt% with respect to the entire sheet-shaped resin composition.
- the weight reduction rate when the temperature is raised from 25 ° C. to 300 ° C. at a rate of temperature increase of 10 ° C./min is 2% or less, volatile components are suppressed, and voids are generated. Reduced. Therefore, it is excellent in durability at high temperatures.
- the moisture absorption rate by the Karl Fischer method is 1% or less, the generation of voids between the adherend and the sheet-like resin composition or between the semiconductor element and the sheet-like resin composition is suppressed.
- the acid dissociation constant contains the organic acid in the range of 3.0 or more and 5.0 or less within the range of 1 to 10 weight% with respect to the whole sheet-like resin composition. To do.
- an organic acid having an acid dissociation constant of 3.0 or more is used, the acidity in the resin composition is increased, and adverse effects on physical properties such as deterioration in storage stability can be suppressed. Moreover, since an acid dissociation constant of 5.0 or less is used as the organic acid, the acidity is sufficient, and the oxide film or rust preventive film on the electrode surface can be suitably removed. In addition, since the organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less is contained in an amount of 1% by weight or more with respect to the whole sheet-shaped resin composition, the organic acid is sufficiently distributed or the surface is oxidized. A film or a rust preventive film can be suitably removed.
- the bad influence to physical properties such as a storage stability deterioration, can be suppressed. That is, since an organic acid having an acid dissociation constant in the range of 3.0 to 5.0 is contained in the range of 1 wt% to 10 wt% with respect to the entire sheet-shaped resin composition, An oxide or a rust preventive film can be suitably removed.
- the weight loss rate by heating exists in the said numerical range
- a moisture absorption rate exists in the said numerical range
- an acid dissociation constant exists in the range of 3.0 or more and 5.0 or less. Since an organic acid is contained within the above numerical range, it is excellent in durability at high temperatures and can be suitably used as a sheet for underfill.
- the sheet-like resin composition has a weight loss rate of 2% or less when the temperature is raised from 25 ° C. to 300 ° C. at a rate of temperature rise of 10 ° C./min, and the moisture absorption rate by the Karl Fischer method is 1%.
- an organic acid having an acid dissociation constant in the range of 3.0 to 5.0 is contained within the above numerical range, it is excellent in durability at high temperatures and is a sheet for underfill. Can be suitably used. Therefore, if the sheet-shaped resin composition is used, the reliability of the flip chip type semiconductor device using the copper electrode for bonding the adherend and the semiconductor element can be improved.
- the sheet-shaped resin composition preferably contains a polyimide resin and an inorganic filler.
- the heat resistance can be further improved.
- the sheet-shaped resin composition preferably contains a polyimide resin, an epoxy resin, and an inorganic filler.
- the heat resistance can be further improved in a form having an epoxy resin.
- the tape-integrated sheet-like resin composition for backside grinding which concerns on this invention is equipped with the sheet-like resin composition and the backside grinding tape as described above, The said backside grinding tape
- the sheet-shaped resin composition is provided on the top.
- a dicing tape-integrated sheet-shaped resin composition according to the present invention comprises the sheet-shaped resin composition described above and a dicing tape in order to solve the above-mentioned problems, and the sheet-shaped resin is provided on the dicing tape.
- a composition is provided.
- a method for manufacturing a semiconductor device is a method for manufacturing a semiconductor device using the tape-integrated sheet-like resin composition for backside grinding described above, A laminating step of laminating the sheet surface resin composition of the circuit surface on which the connecting member of the semiconductor wafer is formed and the tape-integrated sheet resin composition for back grinding, A grinding step of grinding the back surface of the semiconductor wafer; A wafer fixing step of attaching a dicing tape to the back surface of the semiconductor wafer after back surface grinding; A peeling step for peeling the back surface grinding tape; A dicing step of dicing the semiconductor wafer to form a semiconductor chip with a sheet-shaped resin composition; A pick-up step for peeling the semiconductor chip with the sheet-shaped resin composition from the dicing tape; A connecting step of electrically connecting the semiconductor chip and the adherend via the connecting member while filling a space between the adherend and the semiconductor chip with the sheet-shaped resin composition; and It includes a curing step of curing the sheet-shaped resin composition.
- a method for manufacturing a semiconductor device is a method for manufacturing a semiconductor device using the dicing tape-integrated sheet-shaped resin composition described above, A laminating step of laminating the semiconductor wafer on which a circuit surface having a connection member is formed and the sheet-like resin composition of the dicing tape-integrated sheet-like resin composition, A dicing step of dicing the semiconductor wafer to form a semiconductor chip with a sheet-shaped resin composition; A pick-up step for peeling the semiconductor chip with the sheet-shaped resin composition from the dicing tape; A connection step of electrically connecting the semiconductor chip and the adherend via the connection member while filling a space between the adherend and the semiconductor chip with a sheet-shaped resin composition; and It includes a curing step of curing the sheet-shaped resin composition.
- the sheet-like resin composition has a weight loss rate of 2% or less when heated from 25 ° C. to 300 ° C. at a temperature increase rate of 10 ° C./min, and a moisture absorption rate by the Karl Fischer method of 1% or less. And an organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less is contained within the above numerical range. Therefore, since the sheet-shaped resin composition has heat resistance, it is possible to suppress thermal decomposition of the sheet-shaped resin composition due to heat at the time of manufacturing the semiconductor device, and voids caused by outgas Occurrence can be suppressed.
- the present invention also relates to a semiconductor device manufactured using the sheet-shaped resin composition described above. Moreover, this invention relates to the semiconductor device manufactured using the tape-integrated sheet-like resin composition for back grinding as described above. The present invention also relates to a semiconductor device manufactured using the dicing tape-integrated sheet-shaped resin composition described above.
- the sheet-like resin composition has a weight loss rate of 2% or less when heated from 25 ° C. to 300 ° C. at a temperature increase rate of 10 ° C./min, and a moisture absorption rate by the Karl Fischer method of 1% or less. And an organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less is contained within the above numerical range. Therefore, since the sheet-shaped resin composition has heat resistance, it is possible to suppress thermal decomposition of the sheet-shaped resin composition due to heat at the time of manufacturing the semiconductor device, and voids caused by outgas Occurrence can be suppressed. As a result, the reliability of the semiconductor device can be improved.
- a sheet-shaped resin composition that is excellent in durability at high temperatures and can be suitably used as a sheet for underfill, a dicing tape-integrated sheet-shaped resin composition comprising the sheet-shaped resin composition, The manufacturing method of the semiconductor device using the said sheet-like resin composition and the semiconductor device manufactured using the said sheet-like resin composition can be provided.
- FIG. 1 It is a cross-sectional schematic diagram of the tape-integrated sheet-like resin composition for back surface grinding which concerns on one Embodiment of this invention. It is a figure for demonstrating the manufacturing method of the semiconductor device using the tape-integrated sheet-like resin composition for back grinding shown in FIG. It is a figure for demonstrating the manufacturing method of the semiconductor device using the tape-integrated sheet-like resin composition for back grinding shown in FIG. It is a figure for demonstrating the manufacturing method of the semiconductor device using the tape-integrated sheet-like resin composition for back grinding shown in FIG. It is a figure for demonstrating the manufacturing method of the semiconductor device using the tape-integrated sheet-like resin composition for back grinding shown in FIG. It is a figure for demonstrating the manufacturing method of the semiconductor device using the tape-integrated sheet-like resin composition for back grinding shown in FIG.
- FIG. 1 is a schematic cross-sectional view of a tape-integrated sheet-like resin composition for backside grinding according to an embodiment of the present invention.
- the back-grinding tape-integrated sheet-shaped resin composition 10 according to this embodiment has a structure in which a sheet-shaped resin composition 2 is laminated on a back-grinding tape 1.
- the back grinding tape 1 has a structure in which an adhesive layer 1b is laminated on a substrate 1a.
- the sheet-like resin composition 2 is laminated on the pressure-sensitive adhesive layer 1 b of the back grinding tape 1.
- the sheet-like resin composition 2 does not need to be laminated
- stacked on the tape 1 for back surface grinding is demonstrated about the tape-integrated sheet-like resin composition 10 for back surface grinding
- the sheet-like resin composition 2 should be used alone.
- the sheet-shaped resin composition 2 can be used by being bonded onto the pressure-sensitive adhesive layer 1b of the back grinding tape 1.
- the other surface can be bonded to the pressure-sensitive adhesive layer 1 b of the back surface grinding tape 1 and used.
- the sheet-like resin composition 2 is used for interface sealing between the adherend 6 and the semiconductor chip 5 flip-chip connected on the adherend 6 (see FIG. 2G).
- the sheet-like resin composition 2 has a weight reduction rate of 2% or less when the temperature is raised from 25 ° C. to 300 ° C. at a rate of temperature increase of 10 ° C./min, and is 1.0% or less. More preferred. Moreover, although the said weight decreasing rate is so preferable that it is small, it is 0.05% or more and 0.5% or less, for example. Since the weight reduction rate when the temperature is raised from 25 ° C. to 300 ° C. at a rate of temperature increase of 10 ° C./min is 2% or less, the volatile components are suppressed and the generation of voids is reduced. Therefore, it is excellent in durability at high temperatures.
- the sheet-like resin composition 2 has a moisture absorption rate by the Karl Fischer method of 1% or less, preferably 0.8% or less, and more preferably 0.5% or less. Moreover, although the said moisture absorption rate is so preferable that it is small, it is 0.05% or more, for example. Since the moisture absorption rate by the Karl Fischer method of the sheet-shaped resin composition 2 is 1% or less, it is between the adherend 6 and the sheet-shaped resin composition 2 or between the semiconductor chip 5 and the sheet-shaped resin composition 2. It is possible to suppress the generation of voids.
- the moisture absorption rate by the Karl Fischer method according to the present invention is a value measured under the conditions described in the examples.
- the sheet-like resin composition 2 contains an organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less within a range of 1% by weight or more and 10% by weight or less with respect to the entire sheet-like resin composition. To do.
- the content of the organic acid is preferably 1.5% by weight or more and 6% by weight or less. Since an organic acid having an acid dissociation constant of 3.0 or more is used, the acidity in the resin composition is increased, and adverse effects on physical properties such as deterioration in storage stability can be suppressed. Moreover, since an acid dissociation constant of 5.0 or less is used as the organic acid, the acidity is sufficient, and the oxide film or rust preventive film on the electrode surface can be suitably removed.
- the organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less is contained in an amount of 1% by weight or more with respect to the whole sheet-shaped resin composition, the organic acid is sufficiently distributed or the surface is oxidized. A film or a rust preventive film can be suitably removed. Moreover, since it contains at 10 weight% or less, the bad influence to physical properties, such as a storage stability deterioration, can be suppressed. That is, since the organic acid having an acid dissociation constant in the range of 3.0 or more and 5.0 or less is contained in the range of 1% by weight or more and 10% by weight or less with respect to the entire sheet-shaped resin composition 2, the electrode surface The oxide or rust preventive film can be suitably removed.
- the weight reduction rate due to heating is in the above numerical range
- the moisture absorption rate is in the above numerical range
- the acid dissociation constant is 3.0 or more and 5.0 or less. Since the organic acid in the range is contained within the above numerical range, it is excellent in durability at high temperatures and can be suitably used as a sheet for underfill.
- the organic acid is not particularly limited as long as it has an acid dissociation constant in the range of 3.0 or more and 5.0 or less.
- o-anisic acid (4.09), m-anisic acid ( 4.09), p-anisic acid (4.4), benzylic acid (3.1), acetylsalicylic acid (3.5), 2-phenoxybenzoic acid (3.53), formic acid (3.75), ascorbine
- examples include acid (4.17), benzoic acid (4.2), fluorescein (4.31), camphoric acid (4.71), and acetic acid (4.75).
- the parenthesis shows the acid dissociation constant of each organic acid.
- the sheet-like resin composition 2 has a weight reduction rate due to heating within the above numerical range, a moisture absorption rate within the above numerical range, and an acid dissociation constant within a range of 3.0 to 5.0.
- the forming material is not particularly limited, but polyimide resin, polyamideimide resin, silicone resin, acrylic resin, fluorine resin, epoxy resin, urethane resin, rubber resin, etc. Can be mentioned.
- the sheet-like resin composition 2 preferably has an insulating property.
- 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 an acid dianhydride and a diamine so as to have a substantially equimolar ratio in an appropriately selected solvent and reacting them in an organic solvent.
- the acid dianhydride examples include pyromellitic dianhydride, 2,3,6,7-naphthalenetetracarboxylic dianhydride, 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride 1,2,5,6-naphthalenetetracarboxylic dianhydride, 2,2 ′, 3,3′-biphenyltetracarboxylic dianhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic acid Dianhydride, 2,2-bis (3,4-dicarboxyphenyl) propane dianhydride, 3,4,9,10-perylenetetracarboxylic dianhydride, bis (3,4-dicarboxyphenyl) propane Dianhydride, 1,1-bis (2,3-dicarboxyphenyl) ethane dianhydride, 1,1-bis (3,4-dicarboxyphenyl) ethane dianhydride, bis (2,3
- diamine to be reacted with the acid dianhydride examples include 4,4′-diaminodiphenylpropane, 4,4′-diaminodiphenylmethane, benzidine, 3,3′-dichlorobenzidine, 4,4′-diamino.
- 2,2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane and bisaminopropyltetramethyldisiloxane are used from the viewpoint of keeping the weight loss rate and moisture absorption rate within the above specific ranges by heating. preferable.
- the organic solvent used in the reaction of the acid dianhydride and the diamine does not react with the acid dianhydride and the diamine, and at least one of the reaction components, preferably both, and the product polyamic acid.
- the organic solvent (organic polar solvent) that acts as a solvent is not particularly limited.
- 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.
- a curing accelerator (imidation catalyst) may be added to the polyamic acid solution for the purpose of effectively imidizing.
- the curing accelerator include aliphatic tertiary amines, aromatic tertiary amines, and heterocyclic tertiary amines. Among them, those selected from heterocyclic tertiary amines can be particularly preferably used.
- quinoline, isoquinoline, ⁇ -picoline, pyridine and the like are preferably used. More specifically, 1-ethyl-3,5-dimethoxycarbonyl-4- (2-nitrophenyl) -1,4-dihumanlopyridine may be mentioned.
- the curing accelerator may be added in a molar ratio of 0.2 to 2.0 times, more preferably 0.3 to 1.5 times with respect to 1 mol of polyamic acid. If the amount is too small, the imidization rate tends to be smaller than the preferred range, and if the amount is too large, the curing becomes fast and it becomes difficult to cast on the support. Further, an imidization retarder such as acetylacetone may be used in combination as long as the physical properties are not affected.
- the sheet-like resin composition 2 may contain an epoxy resin.
- the epoxy resin is not particularly limited as long as it is generally used as an adhesive composition.
- An epoxy resin such as a nurate type or a glycidylamine type is used. These can be used alone or in combination of two or more.
- the sheet-like resin composition 2 may contain an inorganic filler.
- the inorganic filler include silica, clay, gypsum, calcium carbonate, barium sulfate, alumina oxide, beryllium oxide, silicon carbide, silicon nitride, and other ceramics, aluminum, copper, silver, gold, nickel, chromium, lead,
- examples include various inorganic powders made of metals such as tin, zinc, palladium, solder, alloys, and other carbon.
- an insulating one it is preferable to use an insulating one.
- the content of the inorganic filler is preferably 10% by weight or more and 80% by weight or less, and more preferably 30% by weight or more and 60% by weight or less, based on the entire solid content.
- the content of the inorganic filler is preferably 10% by weight or more and 80% by weight or less, and more preferably 30% by weight or more and 60% by weight or less, based on the entire solid content.
- the sheet-shaped resin composition 2 is produced as follows, for example. First, a solution containing the polyamic acid and a curing accelerator added as necessary is prepared. Next, it stirs, heating as needed, Then, imide resin is precipitated by throwing in water. Next, the sheet resin composition 2 is obtained by dissolving the imide resin, if necessary, the organic acid, the epoxy resin, and the inorganic filler again in an organic solvent to form a varnish, which is applied and dried. It is done. In addition, the sheet-like resin composition 2 can be obtained by dissolving the polyamic acid, if necessary, the organic acid, the epoxy resin, and the inorganic filler in an organic solvent to form a varnish, and applying and drying the varnish. Can do.
- the back grinding tape 1 has a structure in which an adhesive layer 1b is laminated on a substrate 1a.
- an adhesive layer 1b is laminated on a substrate 1a.
- it demonstrates in order of a base material and an adhesive layer.
- the base material 1a can use what has ultraviolet transmissivity, and becomes a strength base material of the tape 1 for back surface grinding.
- polyolefins such as low density polyethylene, linear polyethylene, medium density polyethylene, high density polyethylene, ultra low density polyethylene, random copolymer polypropylene, block copolymer polypropylene, homopolypropylene, polybutene, polymethylpentene, ethylene-acetic acid Vinyl copolymer, ionomer resin, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid ester (random, alternating) copolymer, ethylene-butene copolymer, ethylene-hexene copolymer, Polyester such as polyurethane, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyetheretherketone, polyimide, polyetherimide, polyamide, wholly aromatic polyamide, polyphenylsulfur De, ara
- examples of the material of the substrate 1a 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.
- the surface of the base material 1a 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
- the base material 1a the same kind or different kinds can be appropriately selected and used, and if necessary, a blend of several kinds can be used.
- the thickness of the substrate 1a is not particularly limited and can be appropriately determined, but is generally about 5 to 200 ⁇ m.
- the pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer 1b is not particularly limited, and for example, a general pressure-sensitive pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be used.
- the pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive based on an acrylic polymer from the standpoint of cleanability with an organic solvent such as ultrapure water or alcohol for electronic components that are difficult to contaminate semiconductor wafers and glass. Is preferred.
- acrylic polymer examples 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 esters, eicosyl esters, etc., alkyl groups having 1 to 30 carbon atoms, especially 4 to 18 carbon atoms, such as
- 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 number average molecular weight of the acrylic polymer is preferably 300,000 or more, more preferably about 400,000 to 3 million.
- an external cross-linking agent can be appropriately employed for the pressure-sensitive adhesive in order to increase the number average molecular weight of an acrylic polymer as a base polymer.
- the external crosslinking method include a method of adding a so-called crosslinking agent such as a polyisocyanate compound, an epoxy compound, an aziridine compound, a melamine crosslinking agent, and reacting them.
- a so-called crosslinking agent such as a polyisocyanate compound, an epoxy compound, an aziridine compound, a melamine crosslinking agent, and reacting them.
- the amount used is appropriately determined depending on the balance with the base polymer to be cross-linked and further depending on the intended use as an adhesive. Generally, it is preferable to add about 5 parts by weight or less, more preferably 0.1 to 5 parts by weight, with respect to 100 parts by weight of the base polymer.
- additives such as conventionally well-known various tackifier and anti-aging agent, other than the said component as needed to an adhesive.
- the pressure-sensitive adhesive layer 1b can be formed of a radiation curable pressure-sensitive adhesive.
- a radiation-curable pressure-sensitive adhesive can easily reduce its adhesive strength by increasing the degree of crosslinking by irradiation with radiation such as ultraviolet rays. Examples of the radiation include X-rays, ultraviolet rays, electron beams, ⁇ rays, ⁇ rays, and neutron rays.
- the radiation curable pressure-sensitive adhesive those having a radiation curable functional group such as a carbon-carbon double bond and exhibiting adhesiveness can be used without particular limitation.
- the radiation curable pressure sensitive adhesive for example, an addition type radiation curable pressure sensitive adhesive in which a radiation curable monomer component or an oligomer component is blended with a general pressure sensitive pressure sensitive adhesive such as an acrylic pressure sensitive adhesive or a rubber pressure sensitive adhesive. An agent can be illustrated.
- Examples of the radiation curable monomer component to be blended include urethane oligomer, urethane (meth) acrylate, trimethylolpropane tri (meth) acrylate, tetramethylolmethane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, and pentaerythritol.
- Examples include stall tetra (meth) acrylate, dipentaerystol monohydroxypenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and 1,4-butanediol di (meth) acrylate.
- the radiation curable oligomer component examples include urethane, polyether, polyester, polycarbonate, and polybutadiene oligomers, and those having a molecular weight in the range of about 100 to 30000 are suitable.
- the compounding amount of the radiation-curable monomer component or oligomer component can be appropriately determined in accordance with the type of the pressure-sensitive adhesive layer, and the amount capable of reducing the adhesive strength of the pressure-sensitive adhesive layer. In general, the amount is, for example, about 5 to 500 parts by weight, preferably about 40 to 150 parts by weight with respect to 100 parts by weight of the base polymer such as an acrylic polymer constituting the pressure-sensitive adhesive.
- the radiation-curable pressure-sensitive adhesive has a carbon-carbon double bond in the polymer side chain, main chain, or main chain terminal as a base polymer.
- Intrinsic radiation curable pressure sensitive adhesives using Intrinsic radiation curable adhesives do not need to contain oligomer components, which are low molecular components, or do not contain many, so they are stable without the oligomer components moving through the adhesive over time. It is preferable because an adhesive layer having a layered structure can be formed.
- the base polymer having a carbon-carbon double bond those having a carbon-carbon double bond and having adhesiveness can be used without particular limitation.
- those having an acrylic polymer as a basic skeleton are preferable.
- the basic skeleton of the acrylic polymer include the acrylic polymers exemplified above.
- 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 a radiation-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 (particularly acrylic polymer) having the carbon-carbon double bond can be used alone, but the radiation curable monomer does not deteriorate the characteristics.
- Components and oligomer components can also be blended.
- the radiation-curable oligomer component or the like is usually in the range of 30 parts by weight, preferably in the range of 0 to 10 parts by weight, with respect to 100 parts by weight of the base polymer.
- the radiation curable pressure-sensitive adhesive contains a photopolymerization initiator when cured by ultraviolet rays or the like.
- 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; 2-naphthalene
- oxygen air
- a method of covering the surface of the pressure-sensitive adhesive layer 1b with a separator, a method of irradiating radiation such as ultraviolet rays in a nitrogen gas atmosphere, and the like can be mentioned.
- the thickness of the pressure-sensitive adhesive layer 1b is not particularly limited, but is preferably about 1 to 50 ⁇ m from the viewpoint of preventing chipping of the chip cut surface and compatibility of fixing and holding the adhesive layer.
- the thickness is preferably 2 to 30 ⁇ m, more preferably 5 to 25 ⁇ m.
- Back-grinding tape-integrated sheet-shaped resin composition 10 is prepared, for example, by separately preparing back-grinding tape 1 and sheet-shaped resin composition 2 and finally bonding them together. can do. Specifically, it can be produced according to the following procedure.
- the base material 1a can be formed by a conventionally known film forming method.
- the film forming method include a calendar film forming method, a casting method in an organic solvent, an inflation extrusion method in a closed system, a T-die extrusion method, a co-extrusion method, and a dry lamination method.
- an adhesive composition for forming an adhesive layer is prepared. Resin, additive, etc. which were demonstrated by the term of the adhesive layer are mix
- the coating film is dried under predetermined conditions (heat-crosslinked as necessary) to form the pressure-sensitive adhesive layer 1b.
- predetermined conditions For example, roll coating, screen coating, gravure coating, etc. are mentioned.
- drying conditions for example, a drying temperature of 80 to 150 ° C. and a drying time of 0.5 to 5 minutes are performed.
- the coating film may be dried on the said drying conditions, and the adhesive layer 1b may be formed. Then, the adhesive layer 1b is bonded together with a separator on the base material 1a. Thereby, the tape 1 for back surface grinding provided with the base material 1a and the adhesive layer 1b is produced.
- the tape 1 for back surface grinding what is necessary is just to provide at least a base material and an adhesive layer, and when it has other elements, such as a separator, it is also called the tape 1 for back surface grinding.
- the sheet-shaped resin composition 2 is produced as described above.
- the sheet-shaped resin composition 2 and the pressure-sensitive adhesive layer 1b of the back surface grinding tape 1 are bonded together so that they are bonded surfaces. 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.
- FIG. 1 Manufacturing method of semiconductor device using tape-integrated sheet-shaped resin composition for back surface grinding
- FIG. 2G are views for explaining a method of manufacturing a semiconductor device using the back-grinding tape-integrated sheet-shaped resin composition shown in FIG.
- the circuit surface 3a on which the connection member 4 of the semiconductor wafer 3 is formed and the sheet-like resin composition 2 of the tape-integrated sheet-like resin composition 10 for back grinding are attached.
- Bonding step grinding step for grinding the back surface 3b of the semiconductor wafer 3, wafer fixing step for attaching the dicing tape 11 to the back surface 3b of the semiconductor wafer 3 after back grinding, peeling step for peeling the back surface grinding tape 1, semiconductor A dicing process for dicing the wafer 3 to form the semiconductor chip 5 with the sheet-shaped resin composition 2, a pick-up process for peeling the semiconductor chip 5 with the sheet-shaped resin composition 2 from the dicing tape 11, the adherend 6 and the semiconductor chip 5
- the semiconductor chip 5 and the adherend 6 are electrically connected through the connection member 4 while filling the space between them with the sheet-like resin composition 2.
- a curing step of curing the sheet-like resin composition 2 are electrically connected through the connection member 4 while filling the space between them with the sheet-like resin composition 2.
- connection members 4 are formed on the circuit surface 3a of the semiconductor wafer 3 (see FIG. 2A).
- the height of the connecting member 4 is determined according to the application and is generally about 15 to 100 ⁇ m. Of course, the height of each connection member 4 in the semiconductor wafer 3 may be the same or different.
- the height X ( ⁇ m) of the connecting member 4 formed on the surface of the semiconductor wafer 3 and the thickness Y ( ⁇ m) of the sheet-like resin composition 2 satisfy the following relationship. 0.5 ⁇ Y / X ⁇ 2
- the height X ( ⁇ m) of the connection member 4 and the thickness Y ( ⁇ m) of the sheet-like resin composition 2 satisfy the above relationship, the space between the semiconductor chip 5 and the adherend 6 is sufficiently filled.
- the sheet-like resin composition 2 can be prevented from excessively protruding from the space, and contamination of the semiconductor chip 5 by the sheet-like resin composition 2 can be prevented.
- the height of each connection member 4 differs, the height of the highest connection member 4 is used as a reference.
- the separator arbitrarily provided on the sheet-shaped resin composition 2 of the tape-integrated sheet-shaped resin composition 10 for backside grinding is appropriately peeled off, and as shown in FIG.
- the formed circuit surface 3a and the sheet-shaped resin composition 2 are opposed to each other, and the sheet-shaped resin composition 2 and the semiconductor wafer 3 are bonded (mounting).
- the method of bonding is not particularly limited, but a method by pressure bonding is preferable.
- the pressure for pressure bonding is preferably 0.1 MPa or more, more preferably 0.2 MPa or more. When the pressure is 0.1 MPa or more, the unevenness of the circuit surface 3a of the semiconductor wafer 3 can be satisfactorily embedded.
- the upper limit of the pressure for pressure bonding is not particularly limited, but is preferably 1 MPa or less, more preferably 0.5 MPa or less.
- the bonding temperature is preferably 60 ° C. or higher, more preferably 70 ° C. or higher. When the temperature is 60 ° C. or higher, the viscosity of the sheet-shaped resin composition 2 is reduced, and the unevenness of the semiconductor wafer 3 can be filled without a gap. Further, the bonding temperature is preferably 100 ° C. or lower, more preferably 80 ° C. or lower. When the temperature is 100 ° C. or lower, the sheet-like resin composition 2 can be bonded while suppressing the curing reaction.
- Bonding is preferably performed under reduced pressure, for example, 1000 Pa or less, preferably 500 Pa or less.
- a minimum is not specifically limited, For example, it is 1 Pa or more.
- the surface (that is, the back surface) 3b opposite to the circuit surface 3a of the semiconductor wafer 3 is ground (see FIG. 2B).
- the thin processing machine used for back surface grinding of the semiconductor wafer 3 is not particularly limited, and examples thereof include a grinding machine (back grinder) and a polishing pad. Further, the back surface grinding may be performed by a chemical method such as etching. The back surface grinding is performed until the semiconductor wafer 3 has a desired thickness (for example, 700 to 25 ⁇ m).
- the dicing tape 11 is attached to the back surface 3b of the semiconductor wafer 3 (see FIG. 2C).
- the dicing tape 11 has a structure in which an adhesive layer 11b is laminated on a substrate 11a.
- the base material 11a and the pressure-sensitive adhesive layer 11b can be suitably prepared by using the components and the production methods shown in the paragraphs of the base material 1a and the pressure-sensitive adhesive layer 1b of the back grinding tape 1.
- the pressure sensitive adhesive layer 1b When the back surface grinding tape 1 is peeled off, if the pressure sensitive adhesive layer 1b has radiation curability, the pressure sensitive adhesive layer 1b is irradiated with radiation to harden the pressure sensitive adhesive layer 1b, so that the peeling is easily performed. Can do.
- the radiation dose may be set as appropriate in consideration of the type of radiation used and the degree of curing of the pressure-sensitive adhesive layer.
- ⁇ Dicing process> In the dicing process, as shown in FIG. 2E, the semiconductor wafer 5 and the sheet-shaped resin composition 2 are diced to form the diced semiconductor chip 5 with the sheet-shaped resin composition 2. Dicing is performed according to a conventional method from the circuit surface 3a on which the sheet-shaped resin composition 2 of the semiconductor wafer 3 is bonded. For example, a cutting method called full cut that cuts up to the dicing tape 11 can be adopted. It does not specifically limit as a dicing apparatus used at this process, A conventionally well-known thing can be used.
- the expansion can be performed using a conventionally known expanding apparatus.
- the semiconductor chip 5 with the sheet-shaped resin composition 2 is peeled from the dicing tape 11 (the semiconductor chip 5 with the sheet-shaped resin composition 2 is picked up).
- the pickup method is not particularly limited, and various conventionally known methods can be employed.
- the adhesive layer 11b of the dicing tape 11 is an ultraviolet curable type
- the pickup is performed after the adhesive layer 11b is irradiated with ultraviolet rays.
- the adhesive force with respect to the semiconductor chip 5 of the adhesive layer 11b falls, and peeling of the semiconductor chip 5 becomes easy.
- the semiconductor chip 5 and the adherend 6 are electrically connected via the connecting member 4 while filling the space between the adherend 6 and the semiconductor chip 5 with the sheet-like resin composition 2 (FIG. 2G).
- the conductive member 7 is melted while being pressed by bringing the connecting member 4 formed on the semiconductor chip 5 into contact with the conductive member 7 for bonding attached to the connection pad of the adherend 6.
- the semiconductor chip 5 and the adherend 6 are electrically connected. Since the sheet-like resin composition 2 is attached to the circuit surface 3 a of the semiconductor chip 5, the electrical connection between the semiconductor chip 5 and the adherend 6 and at the same time between the semiconductor chip 5 and the adherend 6 are performed. Is filled with the sheet-shaped resin composition 2.
- the materials of the connection member 4 and the conductive material 7 as electrodes are not particularly limited, but copper is preferable.
- the connecting member 4 and the conductive material 7 has an electrode made of copper, processing at a higher temperature is required as compared with the conventional case.
- the sheet-like resin composition 2 has a weight reduction rate due to heating within the above numerical range and a moisture absorption rate within the above numerical range, it is excellent in durability at high temperatures. Therefore, if the sheet-shaped resin composition 2 is used, the reliability of the flip chip type semiconductor device using the copper electrode for bonding the adherend and the semiconductor element can be improved.
- the heating conditions in the connecting step are not particularly limited, but usually the heating conditions are 100 to 300 ° C., and the pressurizing conditions are 0.5 to 500 N.
- thermocompression-bonding process in a connection process in multistep.
- thermocompression treatment in multiple stages, the resin between the connection member 4 and the conductive material 7 can be efficiently removed, and a better metal-to-metal bond can be obtained.
- the sheet-shaped resin composition 2 is cured by heating. Thereby, the connection reliability between the semiconductor chip 5 and the adherend 6 can be ensured.
- the heating temperature for curing the sheet-shaped resin composition 2 is not particularly limited, and is, for example, 150 to 200 ° C. for 10 to 120 minutes. In addition, you may harden a sheet-like resin composition by the heat processing in a connection process.
- a sealing process may be performed to protect the entire semiconductor device 30 including the mounted semiconductor chip 5.
- the sealing step is performed using a sealing resin.
- the sealing conditions at this time are not particularly limited.
- the sealing resin is thermally cured by heating at 175 ° C. for 60 seconds to 90 seconds, but the present invention is not limited to this. For example, it can be cured at 165 ° C. to 185 ° C. for several minutes.
- an insulating resin (insulating resin) is preferable, and it can be appropriately selected from known sealing resins.
- the semiconductor chip 5 and the adherend 6 are electrically connected via a connection member 4 formed on the semiconductor chip 5 and a conductive material 7 provided on the adherend 6. . Further, the sheet-like resin composition 2 is disposed between the semiconductor chip 5 and the adherend 6 so as to fill the space.
- FIG. 3 is a schematic cross-sectional view of a dicing tape-integrated sheet-shaped resin composition according to another embodiment of the present invention.
- the dicing tape-integrated sheet-shaped resin composition 50 according to the present embodiment has a structure in which a sheet-shaped resin composition 42 is laminated on a dicing tape 41.
- the dicing tape 41 has a structure in which an adhesive layer 41b is laminated on a base material 41a.
- the sheet-shaped resin composition 2 is laminated on the pressure-sensitive adhesive layer 41 b of the dicing tape 41.
- the sheet-like resin composition 42 does not need to be laminated
- the dicing tape 41 includes a base material 41a and an adhesive layer 41b laminated on the base material 41a.
- the substrate 41a those exemplified for the substrate 1a can be used.
- the adhesive layer 41b those exemplified for the adhesive layer 1b can be used.
- sheet-shaped resin composition 42 those exemplified in the sheet-shaped resin composition 2 described above can be used.
- FIG. 4A to 4D are views for explaining a method of manufacturing a semiconductor device using the dicing tape-integrated sheet-shaped resin composition shown in FIG. Specifically, in the method for manufacturing the semiconductor device, the semiconductor wafer 43 on which the circuit surface having the connection member 44 is formed and the sheet-shaped resin composition 42 of the dicing tape-integrated sheet-shaped resin composition 50 are bonded to each other.
- Alignment step dicing step of dicing the semiconductor wafer 43 to form the semiconductor chip 45 with the sheet-like resin composition 42, pick-up step of peeling the semiconductor chip 45 with the sheet-like resin composition 42 from the dicing tape 41, and the adherend 46
- a curing step of curing 42 Alignment step, dicing step of dicing the semiconductor wafer 43 to form the semiconductor chip 45 with the sheet-like resin composition 42, pick-up step of peeling the semiconductor chip 45 with the sheet-like resin composition 42 from the dicing tape 41, and the adherend 46
- circuit surface is formed on both sides of the semiconductor wafer and the connection member is formed on both sides will be described, but in the present invention, only on the bonding surface side with the sheet-like resin composition.
- a semiconductor wafer on which a circuit surface having a connection member is formed may be used.
- the semiconductor wafer 43 having the circuit surface having the connection member 44 formed on both sides and the sheet-shaped resin composition 42 of the dicing tape-integrated sheet-shaped resin composition 50 are bonded together.
- the semiconductor wafer 43 since the strength of the semiconductor wafer 43 is weak, the semiconductor wafer 43 may be fixed to a support such as support glass for reinforcement (not shown). In this case, after bonding the semiconductor wafer 43 and the sheet-like resin composition 42, a step of peeling the support may be included. Which circuit surface of the semiconductor wafer 43 and the sheet-shaped resin composition 42 are bonded together may be changed according to the structure of the target semiconductor device.
- connection members 44 on both surfaces of the semiconductor wafer 43 may be electrically connected or may not be connected. Examples of the electrical connection between the connection members 44 include a connection through a via called a TSV format.
- the bonding conditions the conditions exemplified in the bonding process of the tape-integrated sheet-like resin composition 10 for back grinding can be employed.
- ⁇ Dicing process> the semiconductor wafer 43 and the sheet-shaped resin composition 42 are diced to form semiconductor chips 45 with the sheet-shaped resin composition 42 (see FIG. 4B).
- the dicing conditions the conditions exemplified in the dicing process of the tape-integrated sheet-like resin composition 10 for back grinding can be employed.
- the semiconductor chip 45 with the sheet-like resin composition 42 is peeled from the dicing tape 41 (see FIG. 4C).
- the pickup conditions the conditions exemplified in the pickup process of the tape-integrated sheet-like resin composition 10 for back grinding can be employed.
- connection step the semiconductor chip 45 and the adherend 46 are electrically connected via the connection member 44 while the space between the adherend 46 and the semiconductor chip 45 is filled with the sheet-like resin composition 42 (FIG. 4D).
- the specific connection method is the same as the content described in the connection step of the tape-integrated sheet-like resin composition 10 for back grinding.
- the heating conditions in the connecting step the conditions exemplified for the back surface grinding tape-integrated sheet-shaped resin composition 10 can be employed.
- the curing process and the sealing process are the same as the contents described in the curing process and the sealing process of the back surface grinding tape-integrated sheet-shaped resin composition 10. Thereby, the semiconductor device 60 can be manufactured.
- the pasting was performed using the sheet-shaped resin composition as a pasting surface. From the above, a chip-mounted substrate for evaluation was produced. This was embedded in a thermosetting resin (manufactured by Marumoto Struers Co., Ltd., trade name: Epofix) for fixing during polishing and used as a sample for evaluation. Next, the evaluation sample was polished using sandpaper or alumina in a direction perpendicular to the substrate surface, and the polished surface after polishing was observed using an optical microscope (up to 1000 times) and SEM (up to 20000 times). . The case where no gap was confirmed between the substrate and the electrode of the chip was evaluated as ⁇ , and the case where it was confirmed was evaluated as x. The results are shown in Tables 2 and 3.
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Abstract
Description
被着体と前記被着体上にフリップチップ接続された半導体素子との界面封止に用いられるシート状樹脂組成物であって、
昇温速度10℃/minにて、25℃から300℃まで昇温した際の重量減少率が2%以下であり、
カールフィッシャー法による吸湿率が1%以下であり、
酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物全体に対して1重量%以上10重量%以下の範囲内で含有することを特徴とする。
また、前記構成によれば、酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物全体に対して1重量%以上10重量%以下の範囲内で含有する。有機酸として、酸解離定数が3.0以上のものを用いるため、樹脂組成物中の酸性度が高くなり、保存性の悪化等の物性への悪影響を抑制することができる。また、有機酸として、酸解離定数が5.0以下のものを用いるため、酸性度が充分となり、電極表面の酸化膜もしくは防錆膜の除去を好適に行なうことができる。また、酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物全体に対して1重量%以上含有するため、有機酸が充分に行きわたり、表面の酸化膜もしくは防錆膜を好適に除去できる。また、10重量%以下で含有するため、保存性悪化等の物性への悪影響を抑制することができる。
すなわち、酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物全体に対して1重量%以上10重量%以下の範囲内で含有するため、電極表面の酸化物もしくは防錆膜を好適に除去することができる。
このように前記構成によれば、加熱による重量減少率が上記数値範囲内にあり、吸湿率が上記数値範囲内にあり、且つ、酸解離定数が3.0以上5.0以下の範囲内にある有機酸を上記数値範囲内で含有するため、高温での耐久性に優れ、且つ、アンダーフィル用のシートとして好適に使用できる。
半導体ウェハの接続部材が形成された回路面と前記裏面研削用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貼合せ工程、
前記半導体ウェハの裏面を研削する研削工程、
裏面研削後の前記半導体ウェハの裏面にダイシングテープを貼りつけるウェハ固定工程、
前記裏面研削用テープを剥離する剥離工程、
前記半導体ウェハをダイシングしてシート状樹脂組成物付き半導体チップを形成するダイシング工程、
前記シート状樹脂組成物付き半導体チップを前記ダイシングテープから剥離するピックアップ工程、
被着体と前記半導体チップの間の空間を前記シート状樹脂組成物で充填しつつ前記接続部材を介して前記半導体チップと前記被着体とを電気的に接続する接続工程、及び、
前記シート状樹脂組成物を硬化させる硬化工程を含むことを特徴とする。
接続部材を有する回路面が形成された半導体ウェハ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貼合せ工程、
前記半導体ウェハをダイシングしてシート状樹脂組成物付き半導体チップを形成するダイシング工程、
前記シート状樹脂組成物付き半導体チップを前記ダイシングテープから剥離するピックアップ工程、
被着体と前記半導体チップの間の空間をシート状樹脂組成物で充填しつつ前記接続部材を介して前記半導体チップと前記被着体とを電気的に接続する接続工程、及び、
前記シート状樹脂組成物を硬化させる硬化工程を含むことを特徴とする。
図1は、本発明の一実施形態に係る裏面研削用テープ一体型シート状樹脂組成物の断面模式図である。本実施形態に係る裏面研削用テープ一体型シート状樹脂組成物10は、裏面研削用テープ1上にシート状樹脂組成物2が積層された構造である。裏面研削用テープ1は、基材1a上に粘着剤層1bが積層された構造である。シート状樹脂組成物2は裏面研削用テープ1の粘着剤層1b上に積層されている。なお、シート状樹脂組成物2は、裏面研削用テープ1の全面に積層されていなくてもよく、半導体ウェハ3(図2A参照)との貼り合わせに必要なサイズで設けられていればよい。
シート状樹脂組成物2は、被着体6と被着体6上にフリップチップ接続された半導体チップ5との界面封止に用いられる(図2G参照)。
すなわち、酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物2全体に対して1重量%以上10重量%以下の範囲内で含有するため、電極表面の酸化物もしくは防錆膜を好適に除去することができる。
なお、前記ポリアミド酸、必要に応じて前記有機酸、前記エポキシ樹脂、前記無機フィラーを有機溶媒に溶解させてワニスとし、これを塗布、乾燥させることによっても、シート状樹脂組成物2を得ることができる。
裏面研削用テープ1は、基材1a上に粘着剤層1bが積層された構造である。以下、基材及び粘着剤層の順で説明する。
基材1aは紫外線透過性を有するものを使用することができ、裏面研削用テープ1の強度母体となるものである。例えば、低密度ポリエチレン、直鎖状ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、超低密度ポリエチレン、ランダム共重合ポリプロピレン、ブロック共重合ポリプロピレン、ホモポリプロレン、ポリブテン、ポリメチルペンテン等のポリオレフィン、エチレン-酢酸ビニル共重合体、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、エチレン-ブテン共重合体、エチレン-ヘキセン共重合体、ポリウレタン、ポリエチレンテレフタレート、ポリエチレンナフタレート等のポリエステル、ポリカーボネート、ポリイミド、ポリエーテルエーテルケトン、ポリイミド、ポリエーテルイミド、ポリアミド、全芳香族ポリアミド、ポリフェニルスルフイド、アラミド(紙)、ガラス、ガラスクロス、フッ素樹脂、ポリ塩化ビニル、ポリ塩化ビニリデン、セルロース系樹脂、シリコーン樹脂、金属(箔)、紙等が挙げられる。
本実施の形態に係る裏面研削用テープ一体型シート状樹脂組成物10は、例えば裏面研削用テープ1及びシート状樹脂組成物2を別々に作製しておき、最後にこれらを貼り合わせることにより作成することができる。具体的には、以下のような手順に従って作製することができる。
次に、裏面研削用テープ一体型シート状樹脂組成物10を用いた半導体装置の製造方法について説明する。図2A~図2Gは、図1に示した裏面研削用テープ一体型シート状樹脂組成物を用いた半導体装置の製造方法を説明するための図である。
具体的には、当該半導体装置の製造方法は、半導体ウェハ3の接続部材4が形成された回路面3aと裏面研削用テープ一体型シート状樹脂組成物10のシート状樹脂組成物2とを貼り合わせる貼合せ工程、半導体ウェハ3の裏面3bを研削する研削工程、裏面研削後の半導体ウェハ3の裏面3bにダイシングテープ11を貼りつけるウェハ固定工程、裏面研削用テープ1を剥離する剥離工程、半導体ウェハ3をダイシングしてシート状樹脂組成物2付き半導体チップ5を形成するダイシング工程、シート状樹脂組成物2付き半導体チップ5をダイシングテープ11から剥離するピックアップ工程、被着体6と半導体チップ5の間の空間をシート状樹脂組成物2で充填しつつ接続部材4を介して半導体チップ5と被着体6とを電気的に接続する接続工程、及び、シート状樹脂組成物2を硬化させる硬化工程を含む。
貼合せ工程では、半導体ウェハ3の接続部材4が形成された回路面3aと裏面研削用テープ一体型シート状樹脂組成物10のシート状樹脂組成物2とを貼り合わせる(図2A参照)。
0.5≦Y/X≦2
研削工程では、半導体ウェハ3の回路面3aとは反対側の面(すなわち、裏面)3bを研削する(図2B参照)。半導体ウェハ3の裏面研削に用いる薄型加工機としては特に限定されず、例えば研削機(バックグラインダー)、研磨パッドなどを例示できる。また、エッチングなどの化学的方法にて裏面研削を行ってもよい。裏面研削は、半導体ウェハ3が所望の厚さ(例えば、700~25μm)になるまで行われる。
研削工程後、半導体ウェハ3の裏面3bにダイシングテープ11を貼りつける(図2C参照)。なお、ダイシングテープ11は、基材11a上に粘着剤層11bが積層された構造を有する。基材11a及び粘着剤層11bとしては、裏面研削用テープ1の基材1a及び粘着剤層1bの項で示した成分及び製法を用いて好適に作製することができる。
次いで、裏面研削用テープ1を剥離する(図2D参照)。これにより、シート状樹脂組成物2が露出した状態となる。
ダイシング工程では、図2Eに示すように半導体ウェハ3及びシート状樹脂組成物2をダイシングしてダイシングされたシート状樹脂組成物2付き半導体チップ5を形成する。ダイシングは、半導体ウェハ3のシート状樹脂組成物2を貼り合わせた回路面3aから常法に従い行われる。例えば、ダイシングテープ11まで切込みを行うフルカットと呼ばれる切断方式などを採用できる。本工程で用いるダイシング装置としては特に限定されず、従来公知のものを用いることができる。
図2Fに示すように、シート状樹脂組成物2付き半導体チップ5をダイシングテープ11から剥離する(シート状樹脂組成物2付き半導体チップ5をピックアップする)。ピックアップの方法としては特に限定されず、従来公知の種々の方法を採用できる。
接続工程では、被着体6と半導体チップ5の間の空間をシート状樹脂組成物2で充填しつつ接続部材4を介して半導体チップ5と被着体6とを電気的に接続する(図2G参照)。具体的には、半導体チップ5に形成されている接続部材4を、被着体6の接続パッドに被着された接合用の導電材7に接触させて押圧しながら導電材7を溶融させることにより、半導体チップ5と被着体6とを電気的に接続する。半導体チップ5の回路面3aにはシート状樹脂組成物2が貼り付けられているので、半導体チップ5と被着体6との電気的接続と同時に、半導体チップ5と被着体6との間の空間がシート状樹脂組成物2により充填されることになる。ここで、電極としての接続部材4及び導電材7の材質は、特に制限されないが銅であることが好ましい。接続部材4及び導電材7の少なくとも一方が銅からなる電極を有していると、従来に比して高温での処理が必要となる。しかしながら、シート状樹脂組成物2は、加熱による重量減少率が上記数値範囲内にあり、且つ、吸湿率が上記数値範囲内にあるため、高温での耐久性に優れる。従って、シート状樹脂組成物2を使用すれば、被着体と半導体素子との接合に銅電極を使用したフリップチップ型半導体装置の信頼性を向上させることができる。
半導体チップ5と被着体6との電気的接続を行った後は、シート状樹脂組成物2を加熱により硬化させる。これにより、半導体チップ5と被着体6との間の接続信頼性を確保できる。シート状樹脂組成物2の硬化のための加熱温度としては特に限定されず、例えば、150~200℃で10~120分間である。なお、接続工程における加熱処理によりシート状樹脂組成物を硬化させてもよい。
次に、実装された半導体チップ5を備える半導体装置30全体を保護するために封止工程を行ってもよい。封止工程は、封止樹脂を用いて行われる。このときの封止条件としては特に限定されないが、通常、175℃で60秒間~90秒間の加熱を行うことにより、封止樹脂の熱硬化が行われるが、本発明はこれに限定されず、例えば165℃~185℃で、数分間キュアすることができる。
半導体装置30では、半導体チップ5と被着体6とが、半導体チップ5上に形成された接続部材4及び被着体6上に設けられた導電材7を介して電気的に接続されている。また、半導体チップ5と被着体6との間には、その空間を充填するようにシート状樹脂組成物2が配置されている。
図3は、本発明の他の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の断面模式図である。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50は、ダイシングテープ41上にシート状樹脂組成物42が積層された構造である。ダイシングテープ41は、基材41a上に粘着剤層41bが積層された構造である。シート状樹脂組成物2はダイシングテープ41の粘着剤層41b上に積層されている。なお、シート状樹脂組成物42は、ダイシングテープ41の全面に積層されていなくてもよく、半導体ウェハ43(図4A参照)との貼り合わせに十分なサイズで設けられていればよい。
次に、ダイシングテープ一体型シート状樹脂組成物50を用いる半導体装置の製造方法について説明する。図4A~図4Dは、図3に示したダイシングテープ一体型シート状樹脂組成物を用いた半導体装置の製造方法を説明するための図である。
具体的には、当該半導体装置の製造方法は、接続部材44を有する回路面が形成された半導体ウェハ43とダイシングテープ一体型シート状樹脂組成物50のシート状樹脂組成物42とを貼り合わせる貼合せ工程、半導体ウェハ43をダイシングしてシート状樹脂組成物42付き半導体チップ45を形成するダイシング工程、シート状樹脂組成物42付き半導体チップ45をダイシングテープ41から剥離するピックアップ工程、被着体46と半導体チップ45の間の空間をシート状樹脂組成物42で充填しつつ接続部材44を介して半導体チップ45と被着体46とを電気的に接続する接続工程、及び、シート状樹脂組成物42を硬化させる硬化工程を含む。
貼合せ工程では、図4Aに示すように、接続部材44を有する回路面が両面に形成された半導体ウェハ43とダイシングテープ一体型シート状樹脂組成物50のシート状樹脂組成物42とを貼り合わせる。なお、通常、半導体ウェハ43の強度は弱いことから、補強のために半導体ウェハ43をサポートガラスなどの支持体に固定することがある(図示せず)。この場合は、半導体ウェハ43とシート状樹脂組成物42との貼り合わせ後に、支持体を剥離する工程を含んでいてもよい。半導体ウェハ43のいずれの回路面とシート状樹脂組成物42とを貼り合わせるかは、目的とする半導体装置の構造に応じて変更すればよい。
ダイシング工程では、半導体ウェハ43及びシート状樹脂組成物42をダイシングしてシート状樹脂組成物42付き半導体チップ45を形成する(図4B参照)。ダイシング条件としては、裏面研削用テープ一体型シート状樹脂組成物10のダイシング工程で例示した条件を採用できる。
ピックアップ工程では、シート状樹脂組成物42付き半導体チップ45をダイシングテープ41から剥離する(図4C参照)。ピックアップ条件としては、裏面研削用テープ一体型シート状樹脂組成物10のピックアップ工程で例示した条件を採用できる。
接続工程では、被着体46と半導体チップ45の間の空間をシート状樹脂組成物42で充填しつつ接続部材44を介して半導体チップ45と被着体46とを電気的に接続する(図4D参照)。具体的な接続方法は、裏面研削用テープ一体型シート状樹脂組成物10の接続工程で説明した内容と同様である。接続工程の加熱条件としては、裏面研削用テープ一体型シート状樹脂組成物10で例示した条件を採用できる。
硬化工程及び封止工程は、裏面研削用テープ一体型シート状樹脂組成物10の硬化工程及び封止工程で説明した内容と同様である。これにより、半導体装置60を製造することができる。
表1に記載の配合比に従い、ジアミンをN-メチル-2一ピロリドン(NMP)に溶解させ、これに酸二無水物、及び、硬化促進剤を加えて、室温で1時間撹拌し、次に80℃で4時間撹拌、その後180℃で5時間撹拌した。撹拌終了後、溶液を水3Lに投入し、白色の沈殿したポリマーを得た。
この沈殿を濾過したのち、水で24時間洗浄したのち、真空乾燥機を用いて、70℃24時間乾燥し、各ポリイミド樹脂(ポリイミドA、ポリイミドB、ポリイミドC)を得た。
(ポリイミド)
上記ポリイミドA
上記ポリイミドB
上記ポリイミドC
(エポキシ樹脂)
エポキシ樹脂A:商品名「エピコート1004」、JER株式会社製
(フィラー)
フィラーA:商品名「SO-25R」、株式会社アドマテックス製
(有機酸)
P-アニス酸
ベンジル酸
カンファー酸
ピルビン酸
オレイン酸
<シート状樹脂組成物の作製>
表2、3に記載の配合比に従い、各成分をN-メチル-2一ピロリドン(NMP)に溶解させた後、剥離基材上に塗布し、150℃で5分間乾燥させて、実施例、及び、比較例に係るシート状樹脂組成物を得た。
各実施例、及び、比較例に係るシート状樹脂組成物を、ダイシングテープ(商品名「V-8-T」、日東電工株式会社製)の粘着剤層上に、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を得た。
示差熱・熱重量(TG-DTA)同時測定装置(Rigaku社製、製品名:thermo plus TG8120)を用い、10℃/minの昇温にて、25℃-500℃の範囲で測定を行い、300℃時点での重量変化量(%)を重量減少率とした。結果を表2、表3に示す。
作製したシート状樹脂組成物を10mgサンプリングし、カールフィッシャー法を用いて、150℃で3分間の条件にて吸湿率を測定した。結果を表2、表3に示す。
実施例、及び、比較例のシート状樹脂組成物(厚さ:35μm)をそれぞれチップ((株)ウォルツ社製のWALTS-TEG MB50-0101JY)に80-100℃の熱を加えながらロールラミネーターで貼り付けた。この貼り付けは、チップの電極が形成されている面側に行なった。
次に、シート状樹脂組成物付きのチップを基板((株)ウォルツ社製のWALTS-KIT MB50-0102JY_CR)に貼り付けた。この貼り付けには、パナソニックファクトリーソリューションズ(株)社製のフリップチップボンダーFCB3を用い、300℃、100N、10分の条件にて行なった。なお、貼り付けは、シート状樹脂組成物を貼り合わせ面にして行なった。以上より、評価用のチップ実装済み基板を作製した。これを研磨時の固定のために熱硬化性樹脂(丸本ストルアス社製、商品名:エポフィックス)に埋め込み評価用サンプルとした。次に、基板面に対して直交方向にサンドペーパーやアルミナを用いて評価用サンプルを研磨し、研磨後の研磨面を光学顕微鏡(~1000倍)及びSEM(~20000倍)を用いて観察した。基板とチップの電極との間に間隙が確認されなかった場合を○、確認された場合を×として評価した。結果を表2、表3に示す。
上記接合性評価と同様にして、実施例、及び、比較例に係る評価用サンプルを得た。次に、基板面に対して平行方向にサンドペーパーやアルミナを用いて評価用サンプルを研磨し、研磨後の研磨面を光学顕微鏡(~1000倍)を用いて観察した。基板とチップとの間に介在するシート状樹脂組成物にボイドが確認されなかった場合を○、確認された場合を×として評価した。結果を表2、表3に示す。
1a 基材
1b 粘着剤層
2 シート状樹脂組成物
3 半導体ウェハ
3a 半導体ウェハの回路面
3b 半導体ウェハの回路面とは反対側の面
4 接続部材(バンプ)
5 半導体チップ
6 被着体
7 導通材
10 裏面研削用テープ一体型シート状樹脂組成物
11 ダイシングテープ
11a 基材
11b 粘着剤層
30 半導体装置
41 ダイシングテープ
41a 基材
41b 粘着剤層
42 シート状樹脂組成物
43 半導体ウェハ
44 接続部材(バンプ)
45 半導体チップ
46 被着体
47 導通材
50 ダイシングテープ一体型シート状樹脂組成物
60 半導体装置
Claims (11)
- 被着体と前記被着体上にフリップチップ接続された半導体素子との界面封止に用いられるシート状樹脂組成物であって、
昇温速度10℃/minにて、25℃から300℃まで昇温した際の重量減少率が2%以下であり、
カールフィッシャー法による吸湿率が1%以下であり、
酸解離定数が3.0以上5.0以下の範囲内にある有機酸をシート状樹脂組成物全体に対して1重量%以上10重量%以下の範囲内で含有することを特徴とするシート状樹脂組成物。 - 前記被着体、及び、前記半導体素子の少なくとも一方が銅からなる電極を有することを特徴とする請求項1に記載のシート状樹脂組成物。
- ポリイミド樹脂と無機フィラーとを含有することを特徴とする請求項1又は2に記載のシート状樹脂組成物。
- ポリイミド樹脂とエポキシ樹脂と無機フィラーとを含有することを特徴とする請求項1又は2のいずれか1に記載のシート状樹脂組成物。
- 請求項1~4のいずれか1に記載のシート状樹脂組成物と裏面研削用テープとを備え、
前記裏面研削用テープ上に前記シート状樹脂組成物が設けられている裏面研削用テープ一体型シート状樹脂組成物。 - 請求項1~4のいずれか1に記載のシート状樹脂組成物とダイシングテープとを備え、
前記ダイシングテープ上に前記シート状樹脂組成物が設けられているダイシングテープ一体型シート状樹脂組成物。 - 請求項5に記載の裏面研削用テープ一体型シート状樹脂組成物を用いた半導体装置の製造方法であって、
半導体ウェハの接続部材が形成された回路面と前記裏面研削用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貼合せ工程、
前記半導体ウェハの裏面を研削する研削工程、
裏面研削後の前記半導体ウェハの裏面にダイシングテープを貼りつけるウェハ固定工程、
前記裏面研削用テープを剥離する剥離工程、
前記半導体ウェハをダイシングしてシート状樹脂組成物付き半導体チップを形成するダイシング工程、
前記シート状樹脂組成物付き半導体チップを前記ダイシングテープから剥離するピックアップ工程、
被着体と前記半導体チップの間の空間を前記シート状樹脂組成物で充填しつつ前記接続部材を介して前記半導体チップと前記被着体とを電気的に接続する接続工程、及び、
前記シート状樹脂組成物を硬化させる硬化工程を含むことを特徴とする半導体装置の製造方法。 - 請求項6に記載のダイシングテープ一体型シート状樹脂組成物を用いた半導体装置の製造方法であって、
接続部材を有する回路面が形成された半導体ウェハ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貼合せ工程、
前記半導体ウェハをダイシングしてシート状樹脂組成物付き半導体チップを形成するダイシング工程、
前記シート状樹脂組成物付き半導体チップを前記ダイシングテープから剥離するピックアップ工程、
被着体と前記半導体チップの間の空間をシート状樹脂組成物で充填しつつ前記接続部材を介して前記半導体チップと前記被着体とを電気的に接続する接続工程、及び、
前記シート状樹脂組成物を硬化させる硬化工程を含むことを特徴とする半導体装置の製造方法。 - 請求項1~4のいずれか1に記載のシート状樹脂組成物を用いて製造された半導体装置。
- 請求項5に記載の裏面研削用テープ一体型シート状樹脂組成物を用いて製造された半導体装置。
- 請求項6に記載のダイシングテープ一体型シート状樹脂組成物を用いて製造された半導体装置。
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| JP2009239138A (ja) * | 2008-03-28 | 2009-10-15 | Sumitomo Bakelite Co Ltd | 半導体用フィルム、半導体装置の製造方法および半導体装置 |
| JP2012160668A (ja) * | 2011-02-02 | 2012-08-23 | Sumitomo Bakelite Co Ltd | 電子部品の製造方法 |
| JP2013065888A (ja) * | 2012-12-25 | 2013-04-11 | Hitachi Chemical Co Ltd | 半導体装置の製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026014156A1 (ja) * | 2024-07-10 | 2026-01-15 | 三菱瓦斯化学株式会社 | ポリイミド樹脂、ポリイミドワニス、ポリイミドフィルム、及び仮固定材組成物 |
Also Published As
| Publication number | Publication date |
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| TW201504345A (zh) | 2015-02-01 |
| JP6193627B2 (ja) | 2017-09-06 |
| CN105264652A (zh) | 2016-01-20 |
| JP2014236152A (ja) | 2014-12-15 |
| KR20160016854A (ko) | 2016-02-15 |
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