WO2022153797A1 - セラミック基板、セラミック基板用グリーンシート及びセラミック基板用複合粉末 - Google Patents
セラミック基板、セラミック基板用グリーンシート及びセラミック基板用複合粉末 Download PDFInfo
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- WO2022153797A1 WO2022153797A1 PCT/JP2021/047222 JP2021047222W WO2022153797A1 WO 2022153797 A1 WO2022153797 A1 WO 2022153797A1 JP 2021047222 W JP2021047222 W JP 2021047222W WO 2022153797 A1 WO2022153797 A1 WO 2022153797A1
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- Prior art keywords
- ceramic
- ceramic substrate
- ceramic filler
- glass
- filler
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- 239000000919 ceramic Substances 0.000 title claims abstract description 162
- 239000000758 substrate Substances 0.000 title claims abstract description 81
- 239000000843 powder Substances 0.000 title claims description 26
- 239000002131 composite material Substances 0.000 title claims description 12
- 239000000945 filler Substances 0.000 claims abstract description 80
- 239000011521 glass Substances 0.000 claims abstract description 47
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical group O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052844 willemite Inorganic materials 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000013001 point bending Methods 0.000 claims description 11
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000005388 borosilicate glass Substances 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 21
- 239000004020 conductor Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 4
- 239000006060 molten glass Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000004017 vitrification Methods 0.000 description 2
- 238000007088 Archimedes method Methods 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 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 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- LGERWORIZMAZTA-UHFFFAOYSA-N silicon zinc Chemical compound [Si].[Zn] LGERWORIZMAZTA-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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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
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
-
- 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
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
-
- 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
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
- C04B35/117—Composites
- C04B35/119—Composites with zirconium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
- C04B2235/365—Borosilicate glass
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present invention relates to a ceramic substrate, a green sheet for a ceramic substrate, and a composite powder for a ceramic substrate.
- the probe card usually has a test head that contacts a semiconductor wafer, a printed ceramic substrate that is connected to a tester, and a ceramic substrate called an interposer substrate that connects the printed ceramic substrate and the test head.
- a ceramic substrate containing glass and a ceramic filler as a ceramic substrate that can be fired at a low temperature.
- the distance between the electrode pads of the printed ceramic substrate is larger than the distance between the electrode pads in the test head.
- An electrode pad corresponding to the electrode pad of the printed ceramic substrate is provided on one main surface of the interposer substrate, and an electrode pad corresponding to the electrode pad of the test head is provided on the other main surface. There is.
- the electrode pad on one main surface side and the electrode pad on the other main surface side are connected by an internal conductor. Therefore, in the interposer substrate, it is important that the position accuracy of the electrode pads on both main surfaces is high.
- the inspection using the probe card is performed in a wide temperature range such as -40 ° C to + 125 ° C. Therefore, when the inspection temperature changes, the coefficient of thermal expansion of the interposer substrate is tested so that there is no difference between the distance between the electrode pads of the interposer substrate and the distance between the electrode pads of the test head, printed ceramic substrate, etc. It is preferable to approximate it to the coefficient of thermal expansion of the head or the printed ceramic substrate. Therefore, the interposer substrate is preferably made of a material whose thermal expansion coefficient can be adjusted according to the usage environment.
- An object of the present invention is to provide a ceramic substrate capable of low-temperature firing, having a low coefficient of thermal expansion, and having high mechanical strength.
- the glass has a glass composition of SiO 2 60 to 80%, B 2 O 3 10 to 30%, Li 2 O + Na 2 O + K 2 O 1 to 10%, MgO + CaO + SrO + BaO 0 in mass%. It preferably contains ⁇ 20%.
- Li 2 O + Na 2 O + K 2 O refers to the total amount of Li 2 O, Na 2 O and K 2 O.
- MgO + CaO + SrO + BaO refers to the total amount of MgO, CaO, SrO and BaO.
- the coefficient of thermal expansion in the temperature range of ⁇ 40 to +125 ° C. is preferably 3.0 ⁇ 10 -6 to 4.6 ⁇ 10 -6 / ° C.
- the "coefficient of thermal expansion in the temperature range of ⁇ 40 to + 125 ° C.” can be measured with, for example, a dilatometer.
- the three-point bending strength is larger than 280 MPa.
- the "three-point bending strength” refers to a measurement sample having a thickness of 3.0 mm and measured by a method conforming to JIS R1601 (2008).
- the green sheet for a ceramic substrate of the present invention contains glass, a first ceramic filler, a second ceramic filler and a third ceramic filler, the first ceramic filler is alumina, and the second ceramic filler is willemite.
- the third ceramic filler is zirconia and / or zircone.
- the composite powder for a ceramic substrate of the present invention contains glass, a first ceramic filler, a second ceramic filler and a third ceramic filler, the first ceramic filler is alumina, and the second ceramic filler is willemite.
- the third ceramic filler is zirconia and / or zircone.
- a ceramic substrate which can be fired at a low temperature, has a low coefficient of thermal expansion, and has high mechanical strength.
- a plurality of internal conductors 20 are arranged inside the ceramic substrate 10.
- Each of the inner conductors 20 penetrates the interlayer electrode 21 located between the adjacent ceramic layers 11 and the ceramic layer 11, and faces the interlayer electrodes in the stacking direction of the ceramic layer 11 via the ceramic layer 11. It has a via hole electrode 22 that connects 21 to each other.
- the plurality of internal conductors 20 are provided so as to straddle the first main surface 10a and the second main surface 10b of the ceramic substrate 10.
- the end of the inner conductor 20 on the first main surface 10a side is connected to the electrode pad 31 provided on the first main surface 10a.
- the end of the inner conductor 20 on the second main surface 10b side is connected to the electrode pad 32 provided on the second main surface 10b.
- the distance between the adjacent electrode pads 32 is longer than the distance between the adjacent electrode pads 31. Therefore, when the ceramic substrate 10 is used as an interposer substrate, the test head is connected to the second main surface 10b side, and the ceramic substrate 10 is connected to the first main surface 10a side.
- the coefficient of thermal expansion in the temperature range of -40 to + 125 ° C. is preferably 3.0 ⁇ 10 -6 to 4.6 ⁇ 10 -6 / ° C., particularly 3.2 ⁇ 10 -6 to 4. It is 5 ⁇ 10 -6 / ° C.
- the coefficient of thermal expansion of the ceramic substrate 10 is out of the above range, the difference from the coefficient of thermal expansion of the semiconductor wafer becomes large, and when the inspection temperature changes, the distance between the electrode pads of the interposer substrate and the test head, printed ceramic substrate, etc. The difference in distance between the electrode pads is likely to be large.
- the three-point bending strength is preferably larger than 280 MPa, particularly 300 MPa or more.
- the mechanical strength of the ceramic substrate 10 tends to decrease.
- the specific gravity is preferably 4.5 g / cm 3 or less, 4.4 g / cm 3 or less, 4.3 g / cm 3 or less, 4.2 g / cm 3 or less, 4.1 g / cm 3 or less, In particular, it is 4.0 g / cm 3 or less.
- the specific gravity of the ceramic substrate 10 becomes large, it becomes difficult to reduce the weight of the probe card.
- the glass in the ceramic substrate 10 is preferably borosilicate glass. By using borosilicate glass, it becomes easy to suppress a decrease in the coefficient of thermal expansion of the ceramic substrate 10.
- the borosilicate glass contains, as a glass composition, SiO 2 60 to 80%, B 2 O 3 10 to 30%, Li 2 O + Na 2 O + K 2 O 1 to 10%, MgO + CaO + SrO + BaO 5 to 30% by mass. Is preferable. In the following description of the content range of each component, the% indication indicates mass% unless otherwise specified.
- B 2 O 3 is a component that forms the skeleton of glass, expands the vitrification range, and stabilizes the glass.
- the content of B 2 O 3 is preferably 10 to 30%, particularly 15 to 25%.
- the meltability tends to decrease.
- the coefficient of thermal expansion of the ceramic substrate 10 tends to increase.
- Alkali metal oxides are components that reduce the viscosity of glass and increase its meltability.
- the content of Li 2 O + Na 2 O + K 2 O is preferably 1 to 10%, particularly 2 to 6%.
- the content of Li 2 O + Na 2 O + K 2 O is preferably 0 to 4%, particularly 0 to 2%.
- the content of Na 2 O is preferably 0 to 4%, particularly 0 to 2%.
- the content of K2 O is preferably 0 to 6%, particularly 2 to 5%.
- Alkaline earth metal oxides are components that reduce the viscosity of glass and increase its meltability.
- the content of MgO + CaO + SrO + BaO is preferably 5 to 30%, particularly 10 to 20%.
- the content of MgO + CaO + SrO + BaO is preferably 0 to 10%, particularly 0 to 5%.
- the CaO content is preferably 0 to 30%, 5 to 25%, and particularly 10 to 20%.
- the content of SrO is preferably 0 to 10%, particularly 0 to 5%.
- the content of BaO is preferably 0 to 10%, particularly 0 to 5%.
- Ceramic filler is a component that can adjust the coefficient of thermal expansion, mechanical strength, thermal conductivity, specific gravity, etc. in the temperature range of -40 ° C to + 125 ° C.
- alumina which is the first ceramic filler, is a component that enhances mechanical strength while increasing thermal conductivity
- willemite which is the second ceramic filler, thermally expands in the temperature range of -40 ° C to + 125 ° C.
- Zirconia and zircone which are components that lower the coefficient and are the third ceramic filler, are components that significantly increase the mechanical strength.
- the first ceramic filler is alumina, which is a component that enhances mechanical strength while increasing thermal conductivity.
- the content of the first ceramic filler is preferably 10 to 40% by mass, particularly 20 to 30% by mass.
- the content of the first ceramic filler is small, it becomes difficult to enjoy the above effect.
- the content of the first ceramic filler is increased, the contents of the second and third ceramic fillers are relatively decreased, and it becomes difficult to enjoy the effects of the second and third ceramic fillers.
- the second ceramic filler is willemite, which is a component that lowers the coefficient of thermal expansion.
- the content of the second ceramic filler is preferably 1 to 45% by mass, particularly 5 to 40% by mass, and more preferably 15 to 40% by mass.
- Willemite is a silicon-zinc composite oxide. Willemite is generally represented by Zn 2 SiO 4 .
- the third ceramic filler is zirconia and / or zircon, which is a component that significantly enhances mechanical strength.
- the content of the third ceramic filler is preferably 1 to 45% by mass, particularly 5 to 40% by mass, and more preferably 5 to 25% by mass.
- the content of the third ceramic filler is small, it becomes difficult to enjoy the above effect.
- the content of the third ceramic filler is increased, the contents of the first and second ceramic fillers are relatively decreased, and it becomes difficult to enjoy the effects of the first and second ceramic fillers.
- the specific gravity tends to increase.
- the average particle size of the second ceramic filler is preferably smaller than the average particle size of the first ceramic filler. In this case, the filling rate of the entire ceramic filler is increased, and the mechanical strength of the ceramic substrate 10 is improved.
- ceramic fillers may be introduced, for example, ⁇ -spojumen, mullite, quartz and the like may be introduced.
- a composite powder containing the above-mentioned glass powder, the first ceramic filler, the second ceramic filler, and the third ceramic filler is prepared.
- a binder containing a resin, a plasticizer, a solvent and the like is added to the composite powder and kneaded to prepare a slurry.
- a green sheet for a ceramic substrate is produced by molding the slurry into a sheet by a doctor blade method or the like.
- the via hole can be formed by, for example, irradiation with laser light, mechanical punching, or the like.
- the inside of the via hole is filled with a conductive paste for forming the via hole electrode 22. Further, a conductive paste for forming the interlayer electrode 21 and the electrode pads 31 and 32 is applied on the green sheet.
- Table 1 shows Examples (Sample Nos. 1 to 6) and Comparative Examples (Sample No. 7) of the present invention.
- the glass raw materials were mixed so that the glass composition was SiO 265 %, B 2 O 3 15%, Ca O 16%, and K 2 O 4% in terms of mass%, and the glass raw materials were put into a platinum crucible, and 1450.
- Molten glass was obtained by melting at ° C.
- molten glass was supplied between two water-cooled rotating rolls and stretch-molded to obtain a film-shaped glass.
- the glass thus obtained was pulverized by a ball mill to obtain a glass powder having an average particle diameter of 2.7 ⁇ m.
- glass powder, alumina powder, willemite powder, and zirconia powder were mixed at the ratios shown in the table to prepare a composite powder.
- the glass raw materials were mixed so that the glass composition was SiO 2 65%, B 2 O 3 15%, Ca O 16%, and K 2 O 4% in terms of mass%, and the glass raw materials were put into a platinum crucible, and 1450.
- Molten glass was obtained by melting at ° C.
- molten glass was supplied between two water-cooled rotating rolls and stretch-molded to obtain a film-shaped glass.
- the glass thus obtained was pulverized by a ball mill to obtain a glass powder having an average particle diameter of 2.7 ⁇ m.
- glass powder, alumina powder, willemite powder, and zircon powder were mixed at the ratios shown in the table to prepare a composite powder.
- CTE is a coefficient of thermal expansion in the temperature range of -40 to + 125 ° C, and is measured with a dilatometer.
- Relative density is measured by the well-known Archimedes method.
- the three-point bending strength was measured by a method conforming to JIS R1601 (2008) with the thickness of the measurement sample being 3.0 mm.
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Abstract
Description
Claims (7)
- ガラス、第1のセラミックフィラー、第2のセラミックフィラー及び第3のセラミックフィラーを含有し、
第1のセラミックフィラーがアルミナであり、第2のセラミックフィラーがウイレマイトであり、第3のセラミックフィラーがジルコニア及び/又はジルコンである、セラミック基板。 - ガラスがホウケイ酸ガラスである、請求項1に記載のセラミック基板。
- ガラスが、ガラス組成として、質量%で、SiO2 60~80%、B2O3 10~30%、Li2O+Na2O+K2O 1~10%、MgO+CaO+SrO+BaO 5~30%を含有する、請求項1又は2に記載のセラミック基板。
- -40~+125℃の温度範囲における熱膨張係数が3.0×10-6~4.6×10-6/℃である、請求項1~3の何れかに記載のセラミック基板。
- 三点曲げ強度が280MPaより大きい、請求項1~4の何れかに記載のセラミック基板。
- ガラス、第1のセラミックフィラー、第2のセラミックフィラー及び第3のセラミックフィラーを含有し、
第1のセラミックフィラーがアルミナであり、第2のセラミックフィラーがウイレマイトであり、第3のセラミックフィラーがジルコニア及び/又はジルコンである、セラミック基板用グリーンシート。 - ガラス、第1のセラミックフィラー、第2のセラミックフィラー及び第3のセラミックフィラーを含有し、
第1のセラミックフィラーがアルミナであり、第2のセラミックフィラーがウイレマイトであり、第3のセラミックフィラーがジルコニア及び/又はジルコンである、セラミック基板用複合粉末。
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