WO2016181761A1 - 封止樹脂シート - Google Patents
封止樹脂シート Download PDFInfo
- Publication number
- WO2016181761A1 WO2016181761A1 PCT/JP2016/062192 JP2016062192W WO2016181761A1 WO 2016181761 A1 WO2016181761 A1 WO 2016181761A1 JP 2016062192 W JP2016062192 W JP 2016062192W WO 2016181761 A1 WO2016181761 A1 WO 2016181761A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin sheet
- sealing resin
- substrate
- sealing
- electronic component
- Prior art date
Links
- XDTMQSROBMDMFD-UHFFFAOYSA-N C1CCCCC1 Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/96—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being encapsulated in a common layer, e.g. neo-wafer or pseudo-wafer, said common layer being separable into individual assemblies after connecting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/14—Integrated circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/146—Mixed devices
- H01L2924/1461—MEMS
Definitions
- the present invention relates to a sealing resin sheet.
- the insulating layer of a multilayer printed wiring board is required to have a laminate property capable of filling fine electronic components and wiring.
- cyanate ester resins As a resin composition considering the performance, cyanate ester resins, epoxy resins, thermoplastic resins, talc A resin composition for printed wiring boards containing silica and silica has been proposed (see Patent Document 1).
- one or more electronic components are arranged in the opening provided in the substrate, and a sealing resin sheet for sealing is arranged on the substrate so as to cover the opening, and sealed.
- a procedure in which the sealing resin sheet is flowed by heating and pressing from the upper surface side of the sealing resin sheet for stopping to fill the opening of the substrate, and finally the sealing resin sheet is thermally cured has been studied.
- a plurality of openings are formed in one substrate, a predetermined number of electronic components are arranged in the openings, and the openings and the sealing resin sheet for sealing that can cover the whole substrate
- a substrate with built-in electronic components in which a plurality of electronic components are built in one substrate can be manufactured in a lump.
- the present invention aims to provide a sealing resin sheet having both filling properties and removability.
- the present invention has a tack force at 25 ° C. of 150 g or less
- the present invention relates to a sealing resin sheet having a minimum melt viscosity of 50 Pa ⁇ s or less in a temperature range of 50 ° C. to 150 ° C.
- the tack force at 25 ° C. (hereinafter, also simply referred to as “tack force”) is 150 g or less, good removability can be exhibited.
- the minimum melt viscosity (hereinafter also simply referred to as “minimum melt viscosity”) in the temperature range of 50 ° C. to 150 ° C. is 50 Pa ⁇ s or less, the viscosity of the sealing resin sheet is reduced. Excellent filling properties can be exhibited. If the tack force is too large, even if the sealing resin sheet is arranged on the substrate and then tries to peel off, it becomes difficult to peel off from the substrate, and the sealing resin sheet may be damaged in some cases.
- the electronic component since the electronic component is disposed inside the opening, not only the surface structure of the electronic component but also the gap between the inner wall of the opening and the electronic component must be closely packed. If the minimum melt viscosity is too high, the opening is not sufficiently filled with the sealing resin sheet, voids are generated inside the opening, and the reflow resistance and the like are lowered, thereby reducing the reliability of the electronic component built-in substrate. There is a fear.
- the sealing resin sheet preferably contains an inorganic filler having an average particle size of 0.1 to 10 ⁇ m.
- the sealing resin sheet preferably contains 65 to 85% by weight of the inorganic filler with respect to the total solid weight of the sealing resin sheet.
- the sealing resin sheet contains an epoxy resin represented by the following chemical formula (1).
- R1 to R4 are each independently hydrogen or a methyl group, except when all of R1 to R4 are hydrogen.
- organic components there are compounds that have low crystallinity and do not return to the crystalline state before melting even if they are once melted by heat and then cooled, resulting in lower crystallinity.
- tackiness may increase and re-peelability may decrease.
- the epoxy resin represented by the above chemical formula (1) as an organic component (hereinafter, also referred to as “crystalline epoxy resin”) maintains its crystallinity even after heat melting, thereby suppressing an increase in tack. And re-peelability can be improved.
- the sealing resin sheet preferably contains 5 to 15% by weight of the epoxy resin represented by the chemical formula (1) with respect to the total solid content weight of the sealing resin sheet.
- R1 to R4 in the chemical formula (1) are all methyl groups. Thereby, the rigidity of the skeleton of the crystalline epoxy resin is increased, the crystallinity is also increased, and good removability can be exhibited more efficiently.
- the sealing resin sheet may be used for sealing electronic components in an electronic component-embedded substrate, or may be used for interlayer insulation.
- the sealing resin sheet can be suitably applied to a process that requires removability and fillability.
- the encapsulating resin sheet 3 (see FIG. 1D) according to an embodiment of the present invention is a sheet-like object having a certain thickness, and its plan view shape matches a substrate shape such as a circle, a rectangle, or a square. It can be selected appropriately.
- the sealing resin sheet 3 is typically provided in a state of being laminated on a support (not shown) such as a polyethylene terephthalate (PET) film.
- PET polyethylene terephthalate
- the mold release process may be performed to the support body.
- the tack force of the sealing resin sheet at 25 ° C. is preferably 150 g or less, more preferably 140 g or less, and even more preferably 130 g or less. By setting the tack force within the above range, good removability can be achieved.
- the tack force is preferably as small as possible, but is preferably 0 g or more, and more preferably 5 g or more, from the viewpoint of workability and filling property (fluidity) after the sealing resin sheet is disposed on the substrate.
- the minimum melt viscosity in the temperature range of 50 ° C. to 150 ° C. of the sealing resin sheet 3 is preferably 50 Pa ⁇ s or less, more preferably 40 Pa ⁇ s or less, and further preferably 30 Pa ⁇ s or less.
- the minimum melt viscosity of the sealing resin sheet 3 is preferably 50 Pa ⁇ s or less, more preferably 40 Pa ⁇ s or less, and further preferably 30 Pa ⁇ s or less.
- the sealing resin sheet 3 preferably contains an epoxy resin and a phenol resin. Thereby, favorable thermosetting is obtained.
- the epoxy resin is not particularly limited.
- triphenylmethane type epoxy resin, cresol novolac type epoxy resin, biphenyl type epoxy resin, modified bisphenol A type epoxy resin, bisphenol A type epoxy resin, bisphenol F type epoxy resin, modified bisphenol F type epoxy resin, dicyclopentadiene type Various epoxy resins such as an epoxy resin, a phenol novolac type epoxy resin, and a phenoxy resin can be used. These epoxy resins may be used alone or in combination of two or more.
- those having an epoxy equivalent of 150 to 250 and a softening point or melting point of 50 to 130 ° C. are preferably solid, and from the viewpoint of reliability, Triphenylmethane type epoxy resin, cresol novolac type epoxy resin, and biphenyl type epoxy resin are more preferable.
- biphenyl type epoxy resins are preferable, and it is particularly preferable to include an epoxy resin represented by the following chemical formula (1).
- R1 to R4 are each independently hydrogen or a methyl group, except when all of R1 to R4 are hydrogen.
- organic components there are compounds that have low crystallinity and do not return to the crystalline state before melting even if they are once melted by heat and then cooled, resulting in lower crystallinity.
- tackiness may increase and re-peelability may decrease.
- the epoxy resin represented by the above chemical formula (1) as an organic component maintains its crystallinity even after heat melting, so that an increase in tack can be suppressed and re-peelability should be good. Can do.
- the sealing resin sheet preferably contains 5 to 15% by weight, more preferably 8 to 12% by weight of the epoxy resin represented by the chemical formula (1) with respect to the total solid weight of the sealing resin sheet. .
- the content of the crystalline epoxy resin in the above range, the removability and the filling property can be exhibited at a higher level.
- R1 to R4 in the chemical formula (1) are all methyl groups. Thereby, the rigidity of the skeleton of the crystalline epoxy resin is increased, the crystallinity is also increased, and good removability can be exhibited more efficiently.
- the phenol resin is not particularly limited as long as it causes a curing reaction with the epoxy resin.
- a phenol novolac resin, a phenol aralkyl resin, a biphenyl aralkyl resin, a dicyclopentadiene type phenol resin, a cresol novolak resin, a resole resin, or the like is used.
- These phenolic resins may be used alone or in combination of two or more.
- phenolic resin those having a hydroxyl equivalent weight of 70 to 250 and a softening point of 50 to 110 ° C. are preferably used from the viewpoint of reactivity with the epoxy resin, and in particular, phenol novolak from the viewpoint of high curing reactivity. Resin can be used suitably. From the viewpoint of reliability, low hygroscopic materials such as phenol aralkyl resins and biphenyl aralkyl resins can also be suitably used.
- the blending ratio of the epoxy resin and the phenol resin is blended so that the total of hydroxyl groups in the phenol resin is 0.7 to 1.5 equivalents with respect to 1 equivalent of the epoxy group in the epoxy resin from the viewpoint of curing reactivity. It is preferable to use 0.9 to 1.2 equivalents.
- the lower limit of the total content of epoxy resin and phenol resin in the sealing resin sheet is preferably 10% by weight or more, and more preferably 12% by weight or more. Adhesive force with respect to an electronic device, a board
- the upper limit of the total content is preferably 30% by weight or less, and more preferably 28% by weight or less.
- the hygroscopicity of a sealing resin sheet can be reduced as it is 30 weight% or less.
- the sealing resin sheet 3 may contain a thermoplastic resin as long as the solvent resistance is satisfied.
- the sealing resin sheet preferably contains an inorganic filler.
- the shape of the inorganic filler is not particularly limited, and may be any shape such as a spherical shape (including an ellipsoidal shape), a polyhedron shape, a polygonal column shape, an indefinite shape, etc., but in a highly filled state near the hollow structure. From the viewpoints of achievement and appropriate fluidity, a spherical shape is preferable.
- the inorganic filler is not particularly limited, and various conventionally known fillers can be used.
- quartz glass, talc, silica such as fused silica and crystalline silica
- alumina aluminum nitride, silicon nitride And boron nitride powder.
- silica and alumina are preferable, and silica is more preferable because the linear expansion coefficient can be satisfactorily reduced.
- silica powder is preferable, and fused silica powder is more preferable.
- fused silica powder examples include spherical fused silica powder and crushed fused silica powder. From the viewpoint of fluidity, spherical fused silica powder is preferable.
- the average particle diameter of the inorganic filler is preferably in the range of 0.1 to 10 ⁇ m, more preferably in the range of 0.5 to 5 ⁇ m.
- the average particle diameter can be derived by using a sample arbitrarily extracted from the population and measuring it using a laser diffraction / scattering particle size distribution measuring apparatus. If the average particle size of the inorganic filler is too small, the viscosity of the sealing resin sheet tends to increase, and the filling property tends to decrease or the tack force increases. Filling may be insufficient.
- the sealing resin sheet preferably contains 65 to 85% by weight, more preferably 70 to 83% by weight of the inorganic filler with respect to the total solid content of the sealing resin sheet.
- the sealing resin sheet 3 contains a curing accelerator.
- the curing accelerator is not particularly limited as long as it can cure the epoxy resin and the phenol resin, and examples thereof include organophosphorus compounds such as triphenylphosphine and tetraphenylphosphonium tetraphenylborate; 2-phenyl-4, And imidazole compounds such as 5-dihydroxymethylimidazole and 2-phenyl-4-methyl-5-hydroxymethylimidazole. Of these, 2-phenyl-4,5-dihydroxymethylimidazole is preferred because the curing reaction does not proceed rapidly even when the temperature rises during kneading and the sealing resin sheet 3 can be satisfactorily produced.
- organophosphorus compounds such as triphenylphosphine and tetraphenylphosphonium tetraphenylborate
- 2-phenyl-4, And imidazole compounds such as 5-dihydroxymethylimidazole and 2-phenyl-4-methyl-5-hydroxymethylimidazole.
- the content of the curing accelerator is preferably 0.1 to 5 parts by weight with respect to 100 parts by weight of the total of the epoxy resin and the phenol resin.
- the sealing resin sheet 3 contains a flame retardant component. This can reduce the expansion of combustion when ignition occurs due to component short-circuiting or heat generation.
- a flame retardant composition for example, various metal hydroxides such as aluminum hydroxide, magnesium hydroxide, iron hydroxide, calcium hydroxide, tin hydroxide, complex metal hydroxides; phosphazene flame retardants, etc. should be used. Can do.
- the sealing resin sheet 3 preferably contains a silane coupling agent.
- the silane coupling agent is not particularly limited, and examples thereof include 3-glycidoxypropyltrimethoxysilane.
- the content of the silane coupling agent in the sealing resin sheet 3 is preferably 0.1 to 3% by weight.
- the content is 0.1% by weight or more, it is possible to increase the strength of the encapsulating resin sheet after curing, and to reduce the water absorption rate.
- production of outgas can be suppressed as the said content is 3 weight% or less.
- the sealing resin sheet 3 preferably contains a pigment.
- the pigment is not particularly limited, and examples thereof include carbon black.
- the content of the pigment in the sealing resin sheet 3 is preferably 0.1 to 2% by weight. When the content is 0.1% by weight or more, good marking properties are obtained. On the other hand, the intensity
- a kneaded material is prepared by melt kneading the above-described components with a known kneader such as a mixing roll, a pressure kneader, or an extruder, and the obtained kneaded material is processed into a sheet shape.
- a known kneader such as a mixing roll, a pressure kneader, or an extruder
- the temperature is preferably equal to or higher than the softening point of each component described above, for example, 30 to 150 ° C., and preferably 40 to 140 ° C., more preferably 60 to 120 in consideration of the thermosetting property of the epoxy resin. ° C.
- the time is, for example, 1 to 30 minutes, preferably 5 to 15 minutes.
- the kneading is preferably performed under reduced pressure conditions (under reduced pressure atmosphere).
- the upper limit of the pressure under reduced pressure is preferably 0.1 kg / cm 2 or less, more preferably 0.05 kg / cm 2 or less.
- the lower limit of the pressure under reduced pressure is preferable, but it may be 1 ⁇ 10 ⁇ 4 kg / cm 2 or more from the viewpoint of productivity and physical limitations.
- the kneaded material after melt kneading is preferably processed in a high temperature state without cooling.
- the processing method is not particularly limited, and examples thereof include a flat plate pressing method, a T-die extrusion method, a roll rolling method, a roll kneading method, an inflation extrusion method, a co-extrusion method, and a calendar molding method.
- the processing temperature is preferably higher than the softening point of each component described above, and is, for example, 40 to 150 ° C., preferably 50 to 140 ° C., and more preferably 70 to 120 ° C. in consideration of the thermosetting property and moldability of the epoxy resin. .
- the thickness of the sealing resin sheet 3 is not particularly limited, but is preferably 50 to 700 ⁇ m. Within the above range, the opening of the substrate can be satisfactorily filled. Further, by making the sealing resin sheet thin, the amount of heat generation can be reduced, and curing shrinkage hardly occurs. As a result, the amount of package warpage can be reduced, and a more reliable electronic component built-in substrate can be obtained.
- the sealing resin sheet 3 may have a single layer structure or a multilayer structure in which two or more sealing resin sheets are laminated, but there is no risk of delamination and the sheet thickness is highly uniform.
- a single-layer structure is preferable because of its low moisture absorption.
- the sealing resin sheet 3 may be for electronic component sealing in the electronic component built-in substrate as described above, or may be for interlayer insulation in the multilayer circuit substrate. Further, SAW (Surface Acoustic Wave) filters; MEMS (Micro Electro Mechanical Systems) such as pressure sensors and vibration sensors; ICs such as LSIs, semiconductors such as transistors; capacitors; resistors; surface mount type electronic devices such as CMOS sensors It can also be used for sealing.
- SAW Surface Acoustic Wave
- MEMS Micro Electro Mechanical Systems
- ICs such as LSIs, semiconductors such as transistors; capacitors; resistors
- surface mount type electronic devices such as CMOS sensors It can also be used for sealing.
- FIG. 1A to FIG. 1E are diagrams schematically showing one step of a method for manufacturing an electronic component built-in substrate according to an embodiment of the present invention.
- the manufacturing procedure of the electronic component built-in substrate is not particularly limited, one or more electronic components 2 are arranged in the opening O provided in the substrate 1, and the sealing resin sheet 3 is disposed so as to cover the opening O. 1 is placed on 1 and heated and pressed from the upper surface side of the sealing resin sheet 3 to flow the sealing resin sheet to fill the opening O of the substrate 1 and to thermally cure the sealing resin sheet 3. It can be suitably employed.
- the substrate 1 (see FIG. 1A) is not particularly limited, and examples thereof include a metal substrate such as a copper substrate, a (multilayer) printed wiring substrate, a ceramic substrate, and a silicon substrate.
- an opening O is formed in the substrate 1 (see FIG. 1B).
- the method for forming the opening O is not particularly limited, and examples thereof include etching, laser processing, and punching processing.
- the number of openings formed for one substrate is not particularly limited, and may be appropriately changed according to the design of the target electronic component built-in substrate.
- one or more electronic components 2 are arranged inside the opening O formed in the substrate 1.
- the electronic component is not limited at all, and any electronic component such as a semiconductor chip, a capacitor, a sensor device, a light emitting element, and a vibration element can be used.
- the number of electronic components arranged for one opening is not limited to one, and the target electronic What is necessary is just to change suitably according to the design of a component built-in board.
- the sealing resin sheet 3 is laminated on the substrate 1 so as to cover the opening O, and then heated and pressed from the upper surface side of the sealing resin sheet 3 for sealing.
- the sealing resin sheet 3 is flowed to fill the opening O of the substrate 1, and after filling, the sealing resin sheet 3 is thermoset.
- the hot press conditions for filling the opening O by hot pressing the sealing resin sheet 3 are, for example, a temperature of 50 to 100 ° C., preferably 60 to 90 ° C., and a pressure of, for example, 0.
- the pressure is 1 to 3.0 MPa, preferably 0.5 to 2.5 MPa, and the time is, for example, 5 to 120 minutes, preferably 10 to 60 minutes.
- it is preferable to press under reduced pressure conditions for example, ⁇ 90 to ⁇ 100 kPaG as a gauge pressure). .
- the sealing resin sheet 3 is heat-cured.
- the heating temperature is preferably 100 ° C. or higher, more preferably 120 ° C. or higher.
- the upper limit of the heating temperature is preferably 200 ° C. or lower, more preferably 190 ° C. or lower.
- the heating time is preferably 5 minutes or more, more preferably 10 minutes or more.
- the upper limit of the heating time is preferably 120 minutes or less, more preferably 60 minutes or less.
- you may pressurize as needed Preferably it is 0.5 Mpa or more, More preferably, it is 1.0 Mpa or more.
- the upper limit is preferably 5.0 MPa or less, more preferably 3.0 MPa or less.
- Epoxy resin 1 YX4000H manufactured by Mitsubishi Chemical Corporation (biphenyl type epoxy resin, epoxy equivalent 190 g / eq.)
- Epoxy resin 2 YSLV-80XY manufactured by Nippon Steel Chemical Co., Ltd.
- Epoxy resin 3 Epicoat 828 manufactured by Mitsubishi Chemical Corporation (epoxy equivalent 190 g / eq.)
- Phenol resin 1 MEH-7500-3S (hydroxyl equivalent: 103 g / eq.) Manufactured by Meiwa Kasei Co., Ltd.
- Phenol resin 2 MEH-7851-SS (phenol resin having a biphenylaralkyl skeleton, hydroxyl group equivalent 203 g / eq.) Manufactured by Meiwa Kasei Co., Ltd.
- Thermoplastic resin SIBSTER 072T (styrene-isobutylene-styrene block copolymer) manufactured by Kaneka Corporation
- Inorganic filler 1 FB-5SDC (fused spherical silica, average particle size 5 ⁇ m) manufactured by Denki Kagaku Kogyo Co., Ltd.
- Inorganic filler 2 FB-9454FC manufactured by Denki Kagaku Kogyo Co., Ltd.
- Inorganic filler 3 SO-25R manufactured by Admatechs Co., Ltd. (fused spherical silica, average particle size 0.5 ⁇ m)
- Carbon black # 20 manufactured by Mitsubishi Chemical Curing accelerator: 2PHZ-PW (2-phenyl-4,5-dihydroxymethylimidazole) manufactured by Shikoku Kasei Kogyo Co., Ltd.
- Silane coupling agent KBM-403 (3-glycidoxypropyltrimethoxysilane) manufactured by Shin-Etsu Chemical Co., Ltd.
- Examples 1 to 4 and Comparative Examples 1 to 3 Each component was blended according to the blending ratio shown in Table 1, and melt-kneaded in a roll kneader at 60 to 120 ° C. for 10 minutes under reduced pressure conditions (0.01 kg / cm 2 ) to prepare a kneaded product. Subsequently, the obtained kneaded material was formed into a sheet shape (100 mm ⁇ 100 mm) by a flat plate pressing method to produce a sealing resin sheet having a thickness of 200 ⁇ m.
- Minimum melt viscosity Five sheets of each sealing resin sheet punched into a circle having a diameter of 25 mm were stacked to prepare a cylindrical measurement sample having a diameter of 25 mm and a thickness of 1 mm. With respect to this measurement sample, the minimum melt viscosity was determined by measuring the viscoelasticity measuring device “ARES” manufactured by Rheometric Scientific (measurement conditions: measurement temperature range 50 to 150 ° C., temperature rising rate 10 ° C./min, frequency 1 Hz, strain 10%). When the change in viscosity was followed by measuring the minimum value of the viscosity.
- Tack power A measurement sample (diameter 25 mm, thickness 200 ⁇ m) was punched out from each uncured sealing resin sheet into a circle having a diameter of 25 mm. Using RSA3 (TA Instruments) as an evaluation device, the upper plate is separated from the sample sandwiched between the upper plate (diameter 8 mm) and the lower plate (diameter 25 mm) of the parallel plate compression geometry (TA Instruments). The tack load was measured as the tack force. Specifically, a double-sided tape was applied to one side of the measurement sample, and the tape surface was attached to the lower plate of the jig.
- the sample was held for 5 minutes in order to stabilize the ambient temperature of the sample at 25 ° C., and the upper plate was brought close to a distance that slightly touched the measurement sample. Then, the upper plate was further pressed against the measurement sample, and when a load of 100 N was applied to the upper plate, the movement of the upper plate was reversed so that the upper plate was separated from the measurement sample. The maximum load (adhesive force) when the upper plate was separated from the measurement sample was taken as the tack force.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
Description
50℃~150℃の温度範囲における最低溶融粘度が50Pa・s以下である封止樹脂シートに関する。
本発明の一実施形態に係る封止樹脂シート3(図1D参照)は、一定の厚さを有するシート状物であり、その平面視形状は、円形、矩形、正方形等、基板形状に合わせて適宜選択することができる。封止樹脂シート3は、代表的に、ポリエチレンテレフタレート(PET)フィルムなどの支持体(図示せず)上に積層された状態で提供される。なお、支持体には封止樹脂シート3の剥離を容易に行うために離型処理が施されていてもよい。
封止樹脂シート3の製造方法は特に限定されないが、混練物を調製し、得られた混練物をシート状に加工する方法が好ましい。具体的には、上述の各成分をミキシングロール、加圧式ニーダー、押出機などの公知の混練機で溶融混練することにより混練物を調製し、得られた混練物をシート状に加工する。混練条件として、温度は、上述の各成分の軟化点以上であることが好ましく、例えば30~150℃、エポキシ樹脂の熱硬化性を考慮すると、好ましくは40~140℃、さらに好ましくは60~120℃である。時間は、例えば1~30分間、好ましくは5~15分間である。
図1A~図1Eはそれぞれ、本発明の一実施形態に係る電子部品内蔵基板の製造方法の一工程を模式的に示す図である。電子部品内蔵基板の製造手順としては特に限定されないものの、基板1に設けられた開口部O内に1つ以上の電子部品2を配置し、開口部Oを覆うように封止樹脂シート3を基板1上に配置して、封止樹脂シート3の上面側から加熱プレスして封止樹脂シートを流動させて基板1の開口部Oを充填し、封止樹脂シート3を熱硬化させるという手順を好適に採用することができる。
基板1(図1A参照)としては特に限定されず、例えば、銅基板等の金属基板、(多層)プリント配線基板、セラミック基板、シリコン基板等が挙げられる。
次に、基板1に開口部Oを形成する(図1B参照)。開口部Oの形成方法は特に限定されず、エッチングやレーザー加工、打ち抜き加工等が挙げられる。1つの基板に対して形成する開口部の数も特に限定されず、目的とする電子部品内蔵基板の設計に応じて適宜変更すればよい。
図1Cに示すように、基板1に形成した開口部Oの内部に1つ以上の電子部品2を配置する。電子部品としても何ら限定されず、半導体チップやコンデンサ、センサデバイス、発光素子、振動素子等、任意の電子部品を用いることができる。図1Cにおいては、1つの開口部Oに対して1つの電子部品2を配置しているものの、1つの開口部に対して配置する電子部品の数は1つに限定されず、目的とする電子部品内蔵基板の設計に応じて適宜変更すればよい。
充填工程では、図1D及び図1Eに示すように、開口部Oを覆うように基板1上に封止樹脂シート3を積層し、次いで、封止樹脂シート3の上面側から加熱プレスして封止樹脂シート3を流動させて基板1の開口部Oを充填し、充填後、封止樹脂シート3を熱硬化させる。
エポキシ樹脂1:三菱化学社製のYX4000H(ビフェニル型エポキシ樹脂、エポキシ当量190g/eq.)
エポキシ樹脂2:新日鐵化学(株)製のYSLV-80XY(ビスフェノールF型エポキシ樹脂、エポキン当量200g/eq.)
エポキシ樹脂3:三菱化学社製のエピコート828(エポキシ当量190g/eq.)
フェノール樹脂1:明和化成社製のMEH-7500-3S(水酸基当量103g/eq.)
フェノール樹脂2:明和化成社製のMEH-7851-SS(ビフェニルアラルキル骨格を有するフェノール樹脂、水酸基当量203g/eq.)
熱可塑性樹脂:(株)カネカ製のSIBSTER 072T(スチレン-イソブチレン-スチレンブロック共重合体)
無機充填剤1:電気化学工業社製のFB-5SDC(溶融球状シリカ、平均粒子径5μm)
無機充填剤2:電気化学工業社製のFB-9454FC(溶融球状シリカ、平均粒子径17μm)
無機充填剤3:(株)アドマテックス製のSO-25R(溶融球状シリカ、平均粒子径0.5μm)
カーボンブラック:三菱化学社製の#20
硬化促進剤:四国化成工業社製の2PHZ-PW(2-フェニル-4,5-ジヒドロキシメチルイミダゾール)
シランカップリング剤:信越化学社製のKBM-403(3-グリシドキシプロピルトリメトキシシラン)
表1に記載の配合比に従い、各成分を配合し、ロール混練機により60~120℃、10分間、減圧条件下(0.01kg/cm2)で溶融混練し、混練物を調製した。次いで、得られた混練物を平板プレス法によりシート状(100mm×100mm)に成形して、厚さ200μmの封止樹脂シートを作製した。
作製した封止樹脂シートについて、以下の項目を評価した。結果を表1に示す。
各封止樹脂シートから直径25mmの円形に打ち抜いたものを5枚積層し、直径25mm、厚さ1mmの円柱形の測定サンプルを作製した。この測定サンプルについて、最低溶融粘度を、Rheometric Scientific社製の粘弾性測定装置「ARES」(測定条件:測定温度範囲50~150℃、昇温速度10℃/min、周波数1Hz、ひずみ量10%)で粘度変化を追跡した際、粘度の最低値を測定した。
未硬化の各封止樹脂シートから直径25mmの円形に打ち抜いたものを測定サンプル(直径25mm、厚さ200μm)とした。評価装置としてRSA3(TA Instruments社製)を用い、パラレルプレート圧縮ジオメトリ(TA Instruments社製)の上側プレート(直径8mm)と下側プレート(直径25mm)との間に挟み込んだサンプルから上側プレートが離れた際の荷重を測定してタック力とした。具体的には、測定サンプルの片面に両面テープを貼り付け、テープ面を治具の下側プレートに貼りつけた。その状態のまま、サンプル周囲温度を25℃に安定させるために5分間保持し、上側プレートを測定サンプルに僅かに接触する距離まで近づけた。そこからさらに上側プレートを測定サンプルに押し当て、上側プレートに100Nの荷重が加わった時点で、上側プレートが測定サンプルから離れるように上側プレートの動きを反転させた。上側プレートが測定サンプルから離れた際の最大荷重(接着力)をタック力とした。
室温(25℃)条件下、100×100mm四方、厚さ0.5mmのSUS板の上に各封止樹脂シートをセパレータを剥離した状態で配置し、3分静置した。その後、封止樹脂シートの破断、割れ、残渣を生じることなく封止樹脂シートをSUS板から再び剥離することができた場合を「○」、封止樹脂シートの破断、割れ、残渣が生じた場合を「×」として評価した。
150mm×150mmの銅板(厚さ500μm)にエッチングで10mm×8mmのパターン(開口部)を作製した。パターンニングされた銅板の上に封止樹脂シートを設置し、100℃で100kN、30秒の真空プレスを行いパターン(開口部)内に樹脂を充填させた。その後、光学顕微鏡(20倍)でパターン(開口部)内の表裏面を観察し、ボイドが発生してないか、ボイドの最大径が1μm以下の場合は「○」、ボイドの最大径が1μmを超えていた場合は「×」として評価した。
2 電子部品
3 封止樹脂シート
10 電子部品内蔵基板
Claims (8)
- 25℃でのタック力が150g以下であり、
50℃~150℃の温度範囲における最低溶融粘度が50Pa・s以下である封止樹脂シート。 - 平均粒径が0.1~10μmである無機充填剤を含む請求項1に記載の封止樹脂シート。
- 前記無機充填剤を前記封止樹脂シートの全固形分重量に対して65~85重量%含む請求項2に記載の封止樹脂シート。
- 前記化学式(1)で表わされるエポキシ樹脂を前記封止樹脂シートの全固形分重量に対して5~15重量%含む請求項4に記載の封止樹脂シート。
- 前記化学式(1)中、R1~R4が全てメチル基である請求項4又は5に記載の封止樹脂シート。
- 電子部品内蔵基板における電子部品封止用である請求項1~6のいずれか1項に記載の封止樹脂シート。
- 層間絶縁用である請求項1~6のいずれか1項に記載の封止樹脂シート。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680026858.2A CN107534026A (zh) | 2015-05-13 | 2016-04-18 | 密封树脂片 |
KR1020177033812A KR20180006930A (ko) | 2015-05-13 | 2016-04-18 | 봉지 수지 시트 |
SG11201708796UA SG11201708796UA (en) | 2015-05-13 | 2016-04-18 | Sealing resin sheet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-097852 | 2015-05-13 | ||
JP2015097852A JP6735071B2 (ja) | 2015-05-13 | 2015-05-13 | 封止樹脂シート |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016181761A1 true WO2016181761A1 (ja) | 2016-11-17 |
Family
ID=57248946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/062192 WO2016181761A1 (ja) | 2015-05-13 | 2016-04-18 | 封止樹脂シート |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP6735071B2 (ja) |
KR (1) | KR20180006930A (ja) |
CN (1) | CN107534026A (ja) |
SG (1) | SG11201708796UA (ja) |
TW (1) | TW201708487A (ja) |
WO (1) | WO2016181761A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018104649A (ja) * | 2016-12-28 | 2018-07-05 | 日東電工株式会社 | 樹脂シート |
JP6815293B2 (ja) | 2017-08-16 | 2021-01-20 | 信越化学工業株式会社 | 半導体封止用熱硬化性エポキシ樹脂シート、半導体装置、及びその製造方法 |
WO2022070846A1 (ja) * | 2020-09-30 | 2022-04-07 | 日鉄ケミカル&マテリアル株式会社 | 現場重合型熱可塑性エポキシ樹脂の前駆体混合物、エポキシ樹脂組成物、エポキシ樹脂組成物シート、プリプレグ、及びこれらを用いた現場重合型の熱可塑性繊維強化プラスチック |
JP2023076872A (ja) | 2021-11-24 | 2023-06-05 | 信越化学工業株式会社 | 熱硬化性エポキシ樹脂組成物及び熱硬化性エポキシ樹脂シート |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014029958A (ja) * | 2012-07-31 | 2014-02-13 | Ajinomoto Co Inc | 半導体装置の製造方法 |
JP2014131016A (ja) * | 2012-11-29 | 2014-07-10 | Nitto Denko Corp | 熱硬化性樹脂シート及び電子部品パッケージの製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5176075B2 (ja) * | 2007-08-29 | 2013-04-03 | 日立化成株式会社 | 封止用エポキシ樹脂成形材料及びこれを用いて封止された素子を備えてなる電子部品装置 |
JP2011216636A (ja) * | 2010-03-31 | 2011-10-27 | Murata Mfg Co Ltd | 電子部品内蔵基板、電子回路モジュール、および電子部品内蔵基板の製造方法 |
JP4976522B2 (ja) * | 2010-04-16 | 2012-07-18 | 日東電工株式会社 | 熱硬化型ダイボンドフィルム、ダイシング・ダイボンドフィルム、及び、半導体装置の製造方法 |
JP2012046576A (ja) * | 2010-08-25 | 2012-03-08 | Sumitomo Bakelite Co Ltd | 封止用エポキシ樹脂組成物及び電子部品装置 |
JP5617495B2 (ja) * | 2010-09-29 | 2014-11-05 | 住友ベークライト株式会社 | 半導体装置の製造方法及び半導体装置 |
-
2015
- 2015-05-13 JP JP2015097852A patent/JP6735071B2/ja active Active
-
2016
- 2016-04-18 KR KR1020177033812A patent/KR20180006930A/ko unknown
- 2016-04-18 CN CN201680026858.2A patent/CN107534026A/zh active Pending
- 2016-04-18 SG SG11201708796UA patent/SG11201708796UA/en unknown
- 2016-04-18 WO PCT/JP2016/062192 patent/WO2016181761A1/ja active Application Filing
- 2016-05-12 TW TW105114773A patent/TW201708487A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014029958A (ja) * | 2012-07-31 | 2014-02-13 | Ajinomoto Co Inc | 半導体装置の製造方法 |
JP2014131016A (ja) * | 2012-11-29 | 2014-07-10 | Nitto Denko Corp | 熱硬化性樹脂シート及び電子部品パッケージの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6735071B2 (ja) | 2020-08-05 |
JP2016213391A (ja) | 2016-12-15 |
TW201708487A (zh) | 2017-03-01 |
SG11201708796UA (en) | 2017-11-29 |
KR20180006930A (ko) | 2018-01-19 |
CN107534026A (zh) | 2018-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5735036B2 (ja) | 電子部品装置の製造方法、及び、積層シート | |
JP6643791B2 (ja) | 中空封止用樹脂シート及び中空パッケージの製造方法 | |
WO2016181761A1 (ja) | 封止樹脂シート | |
WO2016189998A1 (ja) | 電子部品内蔵基板用封止樹脂シート及び電子部品内蔵基板の製造方法 | |
JP6302693B2 (ja) | 中空封止用樹脂シート及び中空パッケージの製造方法 | |
WO2014188826A1 (ja) | 電子部品装置の製造方法 | |
TWI620658B (zh) | Resin sheet for electronic component sealing, resin sealed semiconductor device, and method for manufacturing resin sealed semiconductor device | |
JP2018198337A (ja) | 中空封止用樹脂シート及び中空パッケージの製造方法 | |
WO2014156777A1 (ja) | 中空型電子デバイス封止用シート、及び、中空型電子デバイスパッケージの製造方法 | |
JP5768023B2 (ja) | 電子部品封止用熱硬化性樹脂シート、樹脂封止型半導体装置、及び樹脂封止型半導体装置の製造方法 | |
WO2014188824A1 (ja) | 電子部品装置の製造方法 | |
TWI715541B (zh) | 附分隔件之密封用片材、及半導體裝置之製造方法 | |
JP6434181B2 (ja) | 中空型電子デバイス封止用シート、及び、中空型電子デバイスパッケージの製造方法 | |
JP5735030B2 (ja) | 電子デバイス封止用樹脂シート及び電子デバイスパッケージの製造方法 | |
TWI643890B (zh) | Resin sheet for hollow sealing and manufacturing method of hollow package | |
JP2019083342A (ja) | セパレータ付き封止用シート、及び、半導体装置の製造方法 | |
JP2018104648A (ja) | 樹脂シート | |
JP2017066174A (ja) | 熱硬化性組成物およびシート・装置の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16792486 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11201708796U Country of ref document: SG |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20177033812 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16792486 Country of ref document: EP Kind code of ref document: A1 |