WO2014073086A1 - 接合構造体とその製造方法 - Google Patents
接合構造体とその製造方法 Download PDFInfo
- Publication number
- WO2014073086A1 WO2014073086A1 PCT/JP2012/079060 JP2012079060W WO2014073086A1 WO 2014073086 A1 WO2014073086 A1 WO 2014073086A1 JP 2012079060 W JP2012079060 W JP 2012079060W WO 2014073086 A1 WO2014073086 A1 WO 2014073086A1
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- WIPO (PCT)
- Prior art keywords
- oxide
- resin
- bonded structure
- mass
- base material
- Prior art date
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
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- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
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- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
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- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4803—Insulating or insulated parts, e.g. mountings, containers, diamond heatsinks
- H01L21/481—Insulating layers on insulating parts, with or without metallisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/027—Thermal properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0005—Other surface treatment of glass not in the form of fibres or filaments by irradiation
- C03C23/0025—Other surface treatment of glass not in the form of fibres or filaments by irradiation by a laser beam
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/122—Silica-free oxide glass compositions containing oxides of As, Sb, Bi, Mo, W, V, Te as glass formers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/21—Silica-free oxide glass compositions containing phosphorus containing titanium, zirconium, vanadium, tungsten or molybdenum
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/08—Frit compositions, i.e. in a powdered or comminuted form containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/18—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing free metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4803—Insulating or insulated parts, e.g. mountings, containers, diamond heatsinks
- H01L21/4807—Ceramic parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/14—Semiconductor wafers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
Definitions
- the present invention relates to a bonded structure using a resin base material and a manufacturing method thereof.
- Insulating base materials such as glass and ceramics are used in electrical and electronic parts such as IC packages and image display devices. In recent years, these electrical and electronic parts require properties such as flexibility, light weight, and impact resistance.
- a resin base material may be used. Conventionally, resin has often been used for printed circuit boards. In contrast to this, wiring, insulating layers, passive elements, active elements, radiators, protective cases, etc. made of metal, ceramics, silicon, resin, etc. Join with objects.
- the substrate is generally bonded with resin or glass.
- resin the resin is cured and bonded at a low temperature of about room temperature to about 100 ° C.
- resin is easy to permeate gas and moisture and has low airtightness.
- glass is highly airtight because it is difficult for gas and moisture to pass therethrough.
- Patent Document 1 discloses that V 2 O 5 is 45 to 65 mass% and P 2 O 5 is 10 to 20 mass in terms of oxides of components in the glass composition.
- Low melting point glass composition containing 10% to 25% by mass of TeO 2 , 5 to 15% by mass of Fe 2 O 3 , and 0 to 10% by mass of MnO 2 , ZnO, WO 3 , MO 3 and BaO in total.
- a low-melting glass composition having a softening point of 380 ° C. or lower can be provided, and the firing temperature of a sealing glass frit or conductive glass paste using the composition can be 400 ° C. or lower.
- An object of the present invention is to prevent deterioration of the resin base material of the bonded structure.
- the present invention provides a bonded structure including two base materials, at least one of which is a resin, and includes either P or Ag, V, and Te, and the two substrates.
- the oxide formed by softening on the material joins the two substrates.
- a step of supplying an oxide containing either P or Ag and V and Te to the base material a step of supplying an oxide containing either P or Ag and V and Te to the base material, A step of irradiating the oxide with electromagnetic waves and softening the oxide on the substrate to join the two base materials.
- the perspective view and sectional drawing of the joining structure body which joined the resin base material and another base material with the oxide The perspective view and sectional drawing of another junction structure.
- the perspective view and sectional drawing of another junction structure The perspective view and sectional drawing of another junction structure.
- Sectional drawing of the joining structure at the time of filler addition Sectional drawing of the joining structure at the time of metal addition.
- Sectional drawing of the joining structure at the time of metal addition Sectional drawing of a joining structure at the time of giving inclination to the thermal expansion coefficient in an oxide.
- Sectional drawing of a joining structure at the time of giving inclination to the thermal expansion coefficient in an oxide Sectional drawing of a joining structure at the time of giving inclination to the thermal expansion coefficient in an oxide.
- Sectional drawing of a joining structure at the time of sealing an element in a resin base material Sectional drawing of the package electrical and electronic component which protected the element on the ceramic substrate with the resin case. Sectional drawing of the electrical / electronic component which sealed the semiconductor element on the resin base material with the copper cap-shaped heat sink.
- the bonded structure is formed by bonding a plurality of base materials, and at least a part of these base materials is a resin base material.
- the oxide that joins the substrates includes V (vanadium), Te (tellurium), and P (phosphorus). Alternatively, V, Te and Ag (silver) are included.
- the oxide before joining is in a glass state (glass composition)
- the oxide after joining is not necessarily maintained in the glass state, and may be in a crystalline state.
- the glass transition temperature is about 230 to 340 ° C.
- the softening and flowing temperature is about 300 to 440 ° C. Since this glass composition has high ability to absorb electromagnetic waves and is easily heated and can selectively heat the glass portion, there is little damage to the resin base material of the bonded structure.
- the glass transition temperature is about 160 to 270 ° C.
- the softening and flow temperature is about 210 to 370 ° C. Therefore, not only by irradiation with electromagnetic waves but also by other heating means Even when heated, there is little damage to the resin substrate.
- the glass composition described above can keep the glass structure more stable by further containing any of Fe, Sb, W, Ba, and K in some cases.
- the inclusion of Fe and Sb increases the absorption of electromagnetic waves and easily generates heat, so that it can be softened and flowed better.
- the oxide needs to be in a glass state.
- W, Ba, or K crystallization of the glass composition at the time of electromagnetic wave irradiation can be suppressed.
- wavelength of the electromagnetic wave to be used 2000 nm or less (laser) or 1000 mm or less (microwave) which the glass composition efficiently absorbs is effective.
- Te and P are components for vitrification, and by containing these, the glass composition can be easily softened and flowed even by electromagnetic wave irradiation.
- P is effective also in a low thermal expansion, since the oxide equivalent by P 2 O content of 5 (mass%) of TeO 2 are many and the transition point T g tends to be higher than the content of P 2 O 5 The amount should be less than or equal to the TeO 2 content.
- the effective composition range of the oxide is that, after satisfying the above conditions, V 2 O 5 is 17 to 50% by mass, TeO 2 is 20 to 33% by mass, P 2 O 5 is 4 to 4% in terms of the following oxides. 12% by mass.
- V 2 O 5 is 37 to 50% by mass
- TeO 2 is 20 to 32% by mass
- P 2 O 5 is 6 to 12% by mass
- Fe 2 O 3 is 10 to 19%. Mass% is preferred.
- V 2 O 5 is 17 to 50% by mass
- TeO 2 is 25 to 40% by mass
- Ag 2 O is 20 to 50% by mass
- V 2 O 5 + TeO 2 + Ag 2 O is preferably 85% by mass or more.
- the glass composition contains Ag, V, and Te
- the total content of Ag 2 O, V 2 O 5 , and TeO 2 in the oxide state is 85 mass% or more, and the Ag 2 O content is 30 mass%.
- the V 2 O 5 content is 25 mass% or more, a glass composition having a particularly high resistivity is obtained, which is effective for ensuring insulation between the substrates.
- a glass composition described above for example, SiO 2, ZrO 2, Al 2 O 3, Nb 2 O 5, Z
- fillers such as rSiO 4 , Zr 2 (WO 4 ) (PO 4 ) 2 , cordierite, mullite, eucryptite, etc.
- the thermal expansion coefficient is adjusted to a predetermined value according to the material of the substrate.
- the bonding strength can be increased, or the strength of the glass composition itself can be increased.
- the substrates to be joined have a large difference in thermal expansion coefficient, it is possible to increase the joining strength by stacking glass compositions having different thermal expansion coefficients.
- a conductive material such as Ag, Au, Pt, Cu, Al, Sn, Zn, Bi, or In
- thermal conductivity between the substrates to be bonded as necessary.
- electrical conductivity can be imparted.
- metal particles when metal particles are added as a conductive material, the metal particles plastically deform, so if there is a large thermal expansion coefficient between the resin base material and the other base material, the thermal stress can be relaxed, It is possible to increase the bonding strength.
- glass compositions described above are lead-free for environmental considerations.
- the term “lead-free” as used in the present invention means that a prohibited substance in the ROS directive (Restriction of Hazardous Substances: enforced on July 1, 2006) is contained within a specified value or less.
- FIG. 1 shows a structure in which a resin base material 1 and another base material 2 are joined by a glass composition.
- the different base material 2 here may be a resin base material or a base material different from a resin such as glass, ceramics, metal, silicon, and carbide.
- a structure in which the entire surfaces of substrates having the same shape are joined as in (a), a structure in which a space is left inside as in (b), and a structure in which substrates of different sizes are joined together as in (c) , (D), at least one of the structures for joining substrates that are not plate-like may be used.
- a high temperature such as an electric furnace is used. Although it may be heated in the form of being disposed in the environment, it is effective to selectively heat the glass composition portion using electromagnetic waves in the case of a material having poor heat resistance.
- the resin substrate is not particularly limited, and may be crystalline or amorphous.
- the glass composition When the laser is irradiated, the glass composition can be softened and fluidized in a form that suppresses heating of the substrate.
- one of the substrates is a material having a high thermal conductivity such as a metal or some ceramics
- a method in which the glass composition is heated by heat conduction of the substrate by irradiating a laser to a region close to the glass composition You can also take In any case, it is important to selectively heat the glass composition so that the resin substrate 1 has a temperature lower than its heat resistance temperature.
- a laser having a wavelength in the range of 400 to 2000 nm and a microwave having a wavelength in the range of 0.1 to 1000 mm are effective. If the wavelength is a laser having a wavelength of 400 nm or more, the resin of the base material is unlikely to deteriorate. On the other hand, with a laser having a wavelength of 2000 nm or less, even if moisture is contained in the resin of the base material, there is no risk that the moisture will generate heat and the resin will melt. On the other hand, in the case of irradiation with microwaves having a wavelength in the range of 0.1 to 1000 mm, the oxide glass can be selectively heated by absorbing electromagnetic waves by imparting semiconducting conductivity.
- the microwave transmission source is not particularly limited, and may be a 2.45 GHz band such as a home microwave oven.
- Table 1 shows the characteristics of the oxide according to the present invention.
- the glass transition point is shown in the table, and this measuring method is as follows.
- the prepared glass was pulverized until the volume average particle diameter became 20 ⁇ m or less, and the glass transition point (T g ) was measured by conducting a suggested thermal analysis (DTA) up to 550 ° C. at a heating rate of 5 ° C./min. .
- DTA thermal analysis
- Alumina powder was used as a standard sample
- Al was used as a sample container.
- FIG. 2 shows a typical DTA curve of the glass composition. As shown in the figure, the glass transition point (T g ) was the starting temperature of the first endothermic peak.
- the yield point (M g ) is determined as the first endothermic peak temperature
- the softening point (T s ) is determined as the second endothermic peak temperature
- the exothermic peak start temperature (T c ) is determined as the crystallization temperature.
- the softening point T s depends on the glass composition, the softening point T s is about 50 to 100 ° C. higher than the glass transition temperature T g .
- Table 2 shows characteristics of some typical glass compositions. Although some have a low glass transition temperature, selective heating is practically impossible due to poor electromagnetic wave absorption characteristics, and in a form that reduces the thermal damage of the resin base as described above. Can be bonded only to some high heat-resistant resin substrates.
- FIG. 3 shows a cross-sectional view of a bonded structure in which a filler is added to the oxide.
- the filler 4 has a structure in which the filler 4 is dispersed inside the oxide 2.
- the filler 4 needs to be sufficiently smaller than the thickness of the bonding layer made of the oxide 2.
- the mixing amount of the filler 4 is preferably 5 to 50 mass%.
- the amount of the filler 4 is less than 5%, the change in the thermal expansion coefficient of the oxide 2 is slight, and a great effect on the bonding property cannot be expected.
- the amount of the filler 4 exceeds 50 mass%, the fluidity of the oxide 2 is remarkably lowered and good bonding cannot be expected. Therefore, the amount of the filler 4 is preferably in the range of 5 to 50 mass%.
- the oxide 2 may contain the conductive material 5.
- FIG. 4 shows a cross-sectional view of the bonded structure when the metal is added.
- the conductive material Ag, Au, Pt, Cu, Al, Sn, Zn, Bi, In, and alloys of these elements are conceivable.
- the thermal conductivity of the glass composition 2 shown in Table 1 is typically about 0.5 W / mK, and the electrical resistivity is typically about 10 7 to 10 11 ⁇ cm. That is, it is a relatively good thermal insulator and an electrical insulator.
- it may be required to transmit electricity or heat from one substrate to be bonded to the other substrate.
- by mixing metal particles as the conductive material 5 thermal or electrical conductivity is imparted to the glass composition 2 responsible for bonding.
- the conductive material 5 needs to be sufficiently smaller than the thickness of the bonding layer made of the glass composition 2.
- the conductive material 5 softens the glass as shown in FIG. 4 (b).
- the conductive material 5 is particularly preferably a material having a low melting point such as Sn or a material that can be easily sintered such as Ag.
- the glass composition 2 has a value about 10 to 50% of the thermal conductivity of Ag 425 W / mK, and about 2 to 10 times the electric resistivity of Ag 4.1 ⁇ cm. As a result, much better thermal or electrical conductivity is obtained as compared with the case where the metal filler 5 is not mixed.
- the metal particles are plastically deformed, if there is a large coefficient of thermal expansion between the resin base material 1 and the other bonding material, the thermal stress can be relaxed, and also to increase the bonding strength. It is valid. In this application, it is not always necessary that the metal particles are joined by melting or sintering, and the addition amount is preferably about 10 to 50%.
- the composition of the glass composition 2 in FIG. 1 is such that, in the oxide state, the Ag 2 O content is 30 mass% or less and the V 2 O 5 content is 25 mass% or more (Nos. 11 to 15, 17 to 21, 27 in Table 1). 29, 30), the electrical resistivity of the glass composition can be made 10 9 ⁇ cm or more, which is particularly effective in applications where it is desired to take insulation between the bonding substrates.
- FIG. 5 shows a schematic diagram of another embodiment.
- the resin base material 1 and another base material 3 are joined by the oxide 2, and the oxide 2 includes the filler 4.
- the amount of the filler 4 on the side close to the resin substrate 1 and the amount of the filler 4 on the side close to the substrate 3 are different.
- the material of the filler 41 on the side close to the base material 3 and the material of the filler 42 on the side close to the resin base material 1 are different.
- the oxide 2 may contain a resin additive. Thereby, especially bondability with the resin base material 1 may be improved. In addition, the oxide 2 is hardly plastically deformed, and when the difference in thermal expansion coefficient from the base material is large, the bonding strength may be reduced. By mixing a plastically deformed or elastically deformed resin, the base material can be reduced. Even when the difference in thermal expansion coefficient is large, stress relaxation occurs and the reduction in bonding strength can be suppressed.
- the resin additive is preferably dispersed in the oxide at 5 to 50% by volume.
- the resin additive in the present invention is not particularly limited, and may be crystalline or amorphous.
- the oxide 2 may react with the base materials 1 and 2, the filler 4, the conductive material 5, and the resin additive to crystallize. Therefore, even if the glass composition is originally used as a bonding agent, the bonding layer does not need to be amorphous in the final bonding form.
- glass compositions having the compositions shown in Table 1 were produced.
- the starting materials were weighed at the oxide-converted mass ratio shown in the table.
- oxide powder purity 99.9%
- Ba (PO 3 ) 2 manufactured by Rasae Kogyo Co., Ltd. was used as the Ba source and P source.
- the starting materials were mixed and placed in a platinum crucible.
- An alumina crucible was used when the Ag 2 O ratio in the raw material was 40 mass% or more.
- mixing in consideration of avoiding excessive moisture absorption to the raw material powder, mixing was performed in a crucible using a metal spoon.
- the crucible containing the raw material mixed powder was placed in a glass melting furnace and heated and melted. The temperature was raised at a rate of 10 ° C./min, and the glass melted at the set temperature (700 to 950 ° C.) was held for 1 hour with stirring. Thereafter, the crucible was taken out from the glass melting furnace, and the glass was cast into a graphite mold heated to 150 ° C. in advance.
- the cast glass was moved to a strain relief furnace that had been heated to a strain relief temperature in advance, strain was removed by holding for 1 hour, and then cooled to room temperature at a rate of 1 ° C./min.
- the glass cooled to room temperature was coarsely pulverized to produce a glass composition frit.
- the frit of the glass composition had an average volume particle diameter of 20 ⁇ m or less, and the glass transition temperature was measured by DTA.
- the glass transition temperature of each glass composition is as shown in Table 1.
- the frit of the glass composition produced in Example 1 was used as a paste when producing a bonded structure.
- the frit of the glass composition was pulverized with a jet mill to an average volume particle size of 2 ⁇ m or less. No. in Table 1
- a solvent added with 4% resin binder was mixed to form a paste.
- ethyl cellulose was used as the resin binder
- butyl carbitol acetate was used as the solvent.
- Butyl carbitol acetate is no. It does not react as much with 1 to 10 glass compositions.
- a resin binder is added because only a solvent has a low viscosity and poor applicability.
- Ethyl cellulose can be volatilized by heating to about 300 ° C. 1 to 10 glass compositions can be removed without softening and flowing. That is, no.
- the paste using the glass composition of 1 to 10 is applied to the bonding substrate and then heated to about 300 ° C. to remove the solvent and the resin binder.
- a bonded structure as shown in FIG. 1B between resin substrates is produced by laser heating.
- two polycarbonate substrates were prepared.
- the paste of the glass composition produced in Example 2 was apply
- the glass composition was 20 mass% V 2 O 5 -35 mass% TeO 2 -45 mass% Ag 2 O.
- the solvent is alpha terpineol.
- the substrate coated with the paste was heated to 100 ° C. to remove the solvent.
- the other surface of the substrate on which the paste was applied was placed on the substrate on which the paste was applied, with the coated surface facing down.
- the laser was scanned along the paste application surface. Each case of 400 nm, 800 nm, and 1100 nm was tested as the wavelength of the laser. In either case, the glass composition softened and flowed and could be firmly bonded without deteriorating the resin base material.
- various elements 6 can be arranged between the two resin substrates 1 and 3. Moreover, since it is the structure sealed with the two resin base materials 1 and 3 and the glass composition 2, the internal element 6 can be protected from a water
- a bonded structure between resin substrates is produced by microwave heating.
- two polyimide substrates were prepared.
- the paste of the glass composition produced in Example 2 was apply
- the glass composition was 20 mass% V 2 O 5 -35 mass% TeO 2 -45 mass% Ag 2 O.
- the solvent is alpha terpineol.
- the substrate coated with the paste was heated to 100 ° C. to remove the solvent.
- the polyimide film not coated with the other paste was covered with a polyimide film coated with the paste with the paste coated surface facing down.
- a composite sheet of glass and resin is formed.
- This composite sheet is provided with the lightness peculiar to resin and the gas barrier characteristic peculiar to glass, and when this composite sheet is applied to the sealing structure as in Example 3, the internal electrical and electronic parts can be protected.
- the resin case 8 is bonded to the ceramic substrate 7 by laser heating.
- an Al 2 O 3 base material and a polyimide case were prepared.
- a paste of the glass composition produced in al 2 O 3 substrate was 43 mass% V 2 O 5 -30 mass% TeO 2 -15 mass% Fe 2 O 3 -12 mass% P 2 O 5 .
- an ethyl cellulose resin binder and a butyl carbitol acetate solvent are added.
- the Al 2 O 3 substrate was heated at 400 ° C. for 10 minutes to remove the resin binder and the solvent, and the glass composition 2 was once softened and fluidized.
- the pasted portion was laser scanned from above the polyimide case.
- the wavelength of the laser was 1100 nm.
- a polyimide case is used for dust and moisture from the outside for a package electrical / electronic component in which an Al 2 O 3 base material is an insulating base material and wirings 9, passive elements 9, active elements 9 and the like are arranged thereon. It plays a role to protect from.
- typical thermal expansion coefficients of the Al 2 O 3 base material and the polyimide case are 7, 25 ppm / ° C., respectively.
- the thermal expansion coefficient of the glass composition used in the present Example is 10 ppm / ° C.
- the polyimide case is relatively flexible, the Al 2 O 3 base material hardly undergoes plastic deformation, and depending on the structure, peeling may occur due to the difference in thermal expansion coefficient between the glass composition 2 and the Al 2 O 3 base material. Therefore, to produce a similar joint structure with respect to the glass composition 2 Zr 2 (WO 4) of 30vol% (PO 4) 2 was added.
- Zr 2 (WO 4 ) (PO 4 ) 2 Since Zr 2 (WO 4 ) (PO 4 ) 2 has a negative thermal expansion coefficient, it has a role of bringing the thermal expansion coefficient of the glass composition 2 closer to the Al 2 O 3 substrate. It was found that good bonding occurs even when Zr 2 (WO 4 ) (PO 4 ) 2 is added.
- the filler for adjusting the coefficient of thermal expansion is not necessarily Zr 2 (WO 4 ) (PO 4 ) 2 , and SiO 2 , ZrO 2 , Al 2 O 3 , Nb 2 O 5 , Fillers such as ZrSiO 4 , Zr 2 (WO 4 ) (PO 4 ) 2 , cordierite, mullite, and eucryptite can be used.
- the glass composition paste to which the filler is added is applied to the Al 2 O 3 substrate and dried, and then the glass composition 2 paste not containing the filler is applied and dried.
- a method of scanning a laser with a polyimide case covered can also be used.
- the thermal expansion coefficient can be reduced only on the side close to the Al 2 O 3 base material, and the difference between the thermal expansion coefficients of the polyimide case and the glass composition 2 can be prevented from being widened by the addition of the filler. Can do.
- the thermal expansion coefficient of the other base material joined to the resin base material is smaller than the thermal expansion coefficient of the resin base material, but the thermal expansion coefficient of the other base material is the thermal expansion coefficient of the resin base material. Even when the coefficient is larger than the coefficient, bonding can be performed in the same manner.
- the radiator 10 is joined to the resin base material 1 by laser heating in the form as shown in FIG.
- the glass epoxy resin base material and the copper cap-shaped heat radiator 10 were prepared.
- the paste of the glass composition produced in Example 2 was apply
- the glass composition was 20 mass% V 2 O 5 -35 mass% TeO 2 -45 mass% Ag 2 O.
- a glass composition paste to which 30 vol% Sn or 30 vol% acrylic rubber was added as a thermal stress relaxation material was also tried.
- the solvent was ⁇ terpineol.
- the substrate coated with the paste was heated to 100 ° C. to remove the solvent.
- the copper cap was overlaid on the paste application part, and the laser was scanned along the edge of the copper cap near the base material. The wavelength of the laser was 515 nm.
- the glass was softened and flowed by laser irradiation, and the copper cap and the base material could be firmly bonded without deterioration of the base material. In particular, the bonding property was better when Sn and acrylic rubber were added.
- the metal and the resin mixed as the thermal stress relaxation material are not necessarily limited to Sn or acrylic rubber.
- the embodiment of the present embodiment can be applied to an application in which the semiconductor chip 11 is inserted inside the radiator 10 as shown in FIG. 8 and the heat generated during the operation of the semiconductor chip is quickly released from the surface of the radiator 10.
- it can be applied to hard disks and the like.
- the paste of the present embodiment can also be used at the joint portion between the semiconductor chip 11 and the resin base material 1.
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Abstract
Description
rSiO4、Zr2(WO4)(PO4)2、コージェライト、ムライト、ユークリプタイトなどの充填材を混合することで、基材の材質に応じて熱膨張係数を所定の値に調整して接合強度を高めたり、ガラス組成物自体の強度を高めたりすることが可能である。接合する基材に大きな熱膨張係数差がある場合、熱膨張係数の異なるガラス組成物を重ねることにより、接合強度を高めることが可能である。
2・・・酸化物(ガラス組成物)
3・・・基材
4・・・充填材
41・・・充填材
42・・・充填材
5・・・導電材
6・・・素子
7・・・セラミックス基材
8・・・樹脂ケース
9・・・配線(受動素子、能動素子)
10・・・放熱体
11・・・半導体チップ
Claims (15)
- 少なくともどちらか一方が樹脂である2つの基材を備えた接合構造体において、P又はAgの何れかとVとTeとを含み、前記2枚の基材上で軟化して形成された酸化物が前記2つの基材を接合することを特徴とする接合構造体。
- 請求項1において、前記酸化物がV、Te、Pを含み、転移点が340℃以下であることを特徴とする接合構造体。
- 請求項1において、前記酸化物がV2O5、TeO2、P2O5を含み、酸化物換算でV2O5>TeO2>P2O5(mass%)であることを特徴とする接合構造体。
- 請求項1において、前記酸化物がV、Te、Agを含み、転移点が270℃以下であることを特徴とする接合構造体。
- 請求項1において、前記酸化物がV2O5、TeO2、Ag2Oを含み、酸化物換算でV2O5+TeO2+Ag2O≧85mass%であることを特徴とする接合構造体。
- 請求項1において、前記酸化物は、Fe、Sb、W、Ba、Kのいずれかを含むことを特徴とする接合構造体。
- 請求項5において、酸化物換算でV2O5≧25mass%、Ag2O≦30mass%であることを特徴とする接合構造体。
- 請求項1において、前記酸化物は充填材を含み、前記充填材はSiO2、ZrO2、Al2O3、Nb2O5、ZrSiO4、Zr2(WO4)(PO4)2、コージェライト、ムライト、ユークリプタイトのいずれかを含むことを特徴とする接合構造体。
- 請求項8において、前記2つの基材の熱膨張係数が異なり、前記2つの基材の間の前記酸化物の熱膨張係数が、熱膨張係数が小さい前記基材側よりも熱膨張係数が大きい前記基材側で大きいことを特徴とする接合構造体。
- 請求項1において、前記酸化物が電磁波の照射によって軟化することを特徴とする接合構造体。
- 請求項10において、前記電磁波の波長が2000nm以下のレーザー又は0.1-1000mmのマイクロ波であることを特徴とする接合構造体。
- 請求項1において、前記酸化物中に5~50vоl%の樹脂添加物が分散していることを特徴とする接合構造体。
- 少なくともどちらか一方が樹脂である2つの基材を備えた接合構造体の製造方法において、前記基材にP又はAgの何れかとVとTeとを含む酸化物を供給する工程と、前記酸化物に電磁波を照射し前記基板上で軟化した酸化物が前記2つの基材を接合する工程とを備えることを特徴とする接合構造体の製造方法。
- 請求項13において、前記酸化物がV2O5、TeO2、P2O5を含み、酸化物換算でV2O5>TeO2>P2O5(mass%)であることを特徴とする接合構造体の製造方法。
- 請求項13において、前記酸化物がV2O5、TeO2、Ag2Oを含み、酸化物換算でV2O5+TeO2+Ag2O≧85質量%であることを特徴とする接合構造体の製造方法。
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US14/440,124 US9824900B2 (en) | 2012-11-09 | 2012-11-09 | Bonded structure and production method therefor |
PCT/JP2012/079060 WO2014073086A1 (ja) | 2012-11-09 | 2012-11-09 | 接合構造体とその製造方法 |
TW102137903A TWI513782B (zh) | 2012-11-09 | 2013-10-21 | A joining structure and a method for manufacturing the same |
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JP2016050136A (ja) * | 2014-08-29 | 2016-04-11 | 日立化成株式会社 | 無鉛低融点ガラス組成物並びにこれを含む低温封止用ガラスフリット、低温封止用ガラスペースト、導電性材料及び導電性ガラスペースト並びにこれらを利用したガラス封止部品及び電気電子部品 |
WO2016157631A1 (ja) * | 2015-03-31 | 2016-10-06 | 株式会社日立製作所 | 複合材組成物、及びそれを用いたペースト剤 |
WO2017126378A1 (ja) * | 2016-01-18 | 2017-07-27 | 株式会社日立製作所 | 無鉛ガラス組成物、ガラス複合材料、ガラスペースト、封止構造体、電気電子部品及び塗装部品 |
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- 2012-11-09 JP JP2014545517A patent/JP5853106B2/ja not_active Expired - Fee Related
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2016050136A (ja) * | 2014-08-29 | 2016-04-11 | 日立化成株式会社 | 無鉛低融点ガラス組成物並びにこれを含む低温封止用ガラスフリット、低温封止用ガラスペースト、導電性材料及び導電性ガラスペースト並びにこれらを利用したガラス封止部品及び電気電子部品 |
CN112174522A (zh) * | 2014-08-29 | 2021-01-05 | 日立化成株式会社 | 无铅低熔点玻璃组合物以及使用组合物的玻璃材料和元件 |
WO2016157631A1 (ja) * | 2015-03-31 | 2016-10-06 | 株式会社日立製作所 | 複合材組成物、及びそれを用いたペースト剤 |
WO2017126378A1 (ja) * | 2016-01-18 | 2017-07-27 | 株式会社日立製作所 | 無鉛ガラス組成物、ガラス複合材料、ガラスペースト、封止構造体、電気電子部品及び塗装部品 |
JPWO2017126378A1 (ja) * | 2016-01-18 | 2018-09-06 | 株式会社日立製作所 | 無鉛ガラス組成物、ガラス複合材料、ガラスペースト、封止構造体、電気電子部品及び塗装部品 |
US10913680B2 (en) | 2016-01-18 | 2021-02-09 | Hitachi, Ltd. | Lead-free glass composition, glass composite material, glass paste, sealing structure, electrical/electronic component and coated component |
Also Published As
Publication number | Publication date |
---|---|
US20150279700A1 (en) | 2015-10-01 |
TW201428070A (zh) | 2014-07-16 |
TWI513782B (zh) | 2015-12-21 |
JPWO2014073086A1 (ja) | 2016-09-08 |
US9824900B2 (en) | 2017-11-21 |
JP5853106B2 (ja) | 2016-02-09 |
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