WO2020179937A1 - 配線基板、電子部品用パッケージおよび電子装置 - Google Patents
配線基板、電子部品用パッケージおよび電子装置 Download PDFInfo
- Publication number
- WO2020179937A1 WO2020179937A1 PCT/JP2020/010108 JP2020010108W WO2020179937A1 WO 2020179937 A1 WO2020179937 A1 WO 2020179937A1 JP 2020010108 W JP2020010108 W JP 2020010108W WO 2020179937 A1 WO2020179937 A1 WO 2020179937A1
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- WIPO (PCT)
- Prior art keywords
- connecting portion
- region
- wiring board
- layer
- wettability
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 claims description 55
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
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- 239000010937 tungsten Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
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- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
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- 238000005219 brazing Methods 0.000 description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 3
- 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 3
- 238000005304 joining Methods 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 2
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 2
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 2
- 239000006112 glass ceramic composition Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
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- 238000000465 moulding Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
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- 239000002002 slurry Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
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- 239000002241 glass-ceramic Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 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
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
- H01L23/043—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body
- H01L23/047—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body the other leads being parallel to the base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/023—Mount members, e.g. sub-mount members
- H01S5/02315—Support members, e.g. bases or carriers
-
- 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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
-
- 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
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
-
- 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
- H05K1/0284—Details of three-dimensional rigid printed circuit boards
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/017—Glass ceramic coating, e.g. formed on inorganic substrate
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09145—Edge details
- H05K2201/09172—Notches between edge pads
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09845—Stepped hole, via, edge, bump or conductor
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09909—Special local insulating pattern, e.g. as dam around component
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/1034—Edge terminals, i.e. separate pieces of metal attached to the edge of the PCB
Definitions
- This disclosure relates to wiring boards, packages for electronic components, and electronic devices.
- Patent Document 1 An example of the prior art is described in Patent Document 1.
- a wiring board includes a first surface, a second surface opposite to the first surface, a first side surface continuous with the first surface and the second surface, the first surface and the first side surface.
- a dielectric substrate having a recess that is open to The first surface includes a first connection and a second connection located along the first side surface.
- the concave portion is located between the first connecting portion and the second connecting portion, and has a first inner side surface continuous with the first connecting portion and a second inner side surface continuous with the second connecting portion.
- the first inner surface includes a first region and a second region located closer to the bottom surface than the first region. The structure is such that the second wettability of the joint material with respect to the first region is lower than the first wettability of the joint material with respect to the first connection portion.
- the electronic component package of the present disclosure includes a substrate and It is a configuration including the above-mentioned wiring board bonded to the substrate.
- the electronic device of the present disclosure includes the above-mentioned electronic component package and An electronic component mounted on the base body and electrically connected to the wiring board.
- FIG. 3 is a perspective view of the wiring board according to the first embodiment. It is a top view of the wiring board concerning a 1st embodiment. It is a partially enlarged view of the wiring board which concerns on 1st Embodiment. It is sectional drawing of the wiring board which concerns on 1st Embodiment. It is a partially enlarged view of the wiring board which concerns on 2nd Embodiment. It is sectional drawing of the wiring board which concerns on 3rd Embodiment. It is sectional drawing of the wiring board which concerns on 4th Embodiment. It is sectional drawing of the wiring board which concerns on 5th Embodiment. It is a partially enlarged view of the wiring board which concerns on 6th Embodiment. It is a perspective view of the package for electronic components and the electronic device which are other embodiments of this disclosure.
- a joining material such as a brazing material. If the molten bonding material flows into the concave portion at the time of terminal bonding or the like, an unintended conductor will be present around the signal wiring and the terminal. This causes fluctuations in the characteristic impedance of the signal wiring and terminals, and lowers the frequency characteristics of the high-frequency signal.
- the wiring board 1 includes a dielectric substrate 10, and the dielectric substrate 10 has a first surface 10a, a second surface 10b opposite to the first surface 10a, a first surface 10a, and a second surface 10b. It has a continuous first side surface 10c, and has a recess 11 that is open to the first surface 10a and the first side surface 10c.
- the dielectric substrate 10 may be a laminate in which a plurality of insulating layers made of a dielectric material are laminated.
- the dielectric substrate 10 may have a rectangular shape, a U-shape, or any other shape in a plan view, for example.
- the dielectric material include a ceramic material such as an aluminum oxide sintered body, a mullite sintered body, a silicon carbide sintered body, an aluminum nitride sintered body or a silicon nitride sintered body, or a glass ceramic. Materials can be used.
- the first surface 10a includes a first terminal connection portion 12 as a first connection portion and a second terminal connection portion 13 as a second connection portion located along the first side surface 10c.
- the first terminal connecting portion 12 is joined with a first lead terminal described later to be electrically connected
- the second terminal connecting portion 13 is joined with a second lead terminal described below to be electrically connected.
- the recess 11 is located between the first/second terminal connecting portions (hereinafter, the first and second terminal connecting portions will be referred to as “first/second terminal connecting portions”) 12 and 13, and the recess 11
- the first and second terminal connection portions 12 and 13 are electrically insulated by the space formed by the above.
- the first lead terminal is a ground terminal and the second lead terminal is a signal terminal.
- first/second terminal connecting portions 12 and 13 are located on the first surface 10a along the first side surface 10c, and the first/second terminal connecting portions 12 and 13 are plural respectively. It may be one by one.
- the first terminal connecting portion 12, the second terminal connecting portion 13, the second terminal connecting portion 13, and the first terminal connecting portion 12 are located in this order along the first side face 10c. Similar to the recess 11, a recess (second recess 11a) may be provided between the adjacent second terminal connection portions 13.
- the two first terminal connecting portions 12 extend in a direction away from the first side face 10c and may be connected to each other in plan view, whereby the ground potential is stabilized. By stabilizing the ground potential, the frequency characteristics of the high frequency signal are improved.
- the first terminal connecting portion 12 may include, for example, a metal layer (hereinafter, referred to as a first metal layer) 12a for electrically connecting to the first lead terminal.
- the second terminal connection portion 13 may include, for example, a metal layer (hereinafter, referred to as a second metal layer) 13a for electrically connecting to the second lead terminal.
- the first metal layer 12a and the second metal layer 13a may be metallized layers formed on the first surface 10a of the dielectric substrate 10.
- the metallized layer is made of a metal material such as tungsten, molybdenum and manganese, and may be further nickel-plated or gold-plated.
- the dielectric substrate 10 may include a wiring conductor and a conductor layer located between insulating layers.
- the plurality of wiring conductors and the plurality of conductor layers may be located around the position overlapping the recess 11 and at the position overlapping the first metal layer 12a and the second metal layer 13a. Further, the plurality of wiring conductors and the plurality of conductor layers may be electrically connected by a through conductor or the like.
- the plurality of ground wiring conductors and the plurality of ground conductor layers are electrically connected and electrically connected to the first metal layer 12a.
- the plurality of signal wiring conductors are electrically connected to the second metal layer 13a.
- the recess 11 includes a first inner side surface 14 continuous with the first terminal connecting portion 12, a second inner side surface 15 continuous with the second terminal connecting portion 13, and a bottom surface 16 on the second surface 10b side.
- the recess 11 further includes a third inner surface 17 that connects to the first inner surface 14 and the second inner surface 15.
- the shape of the recess 11 is not particularly limited, but in the present embodiment, the first inner side surface 14 and the second inner side surface 15 are rectangular parallelepiped shapes that are parallel to each other and perpendicular to the first surface 10a. Further, the recess 11 may have a tapered shape or a reverse tapered shape in which the first inner side surface 14 and the second inner side surface 15 are non-parallel.
- the first inner side surface 14 of the recess 11 includes a first region 14a on the first surface 10a side and a second region 14b on the bottom surface 16 side.
- the first inner side surface 14 is composed of a first region 14a and a second region 14b, and the first region 14a is connected to the first terminal connection portion 12.
- the first region 14a is connected to the second region 14b, and the second region 14b is connected to the bottom surface 16.
- the second wettability of the bonding material on the surface of the first region 14a is lower than the first wettability of the bonding material on the surface of the first terminal connecting portion 12.
- the joining material used in this embodiment is, for example, a silver-copper brazing material containing silver and copper as main components, or a low-melting-point joining material (solder) in which tin is further added to silver and copper.
- the wettability is the ease with which the molten brazing filler metal, solder or flux spreads on the base metal surface as described in JIS Z3001-3:2008.
- the first wettability of the joining material with respect to the surface of the first terminal connecting portion 12 is the ease with which the molten liquid joining material spreads by spreading on the surface of the first terminal connecting portion 12, and joining with the surface of the first region.
- the second wettability of the material is the ease with which the molten liquid bonding material spreads on the surface of the first region 14a.
- solder having a melting point of 450 ° C. or higher is wax
- solder having a melting point of less than 450 ° C. is solder.
- the wettability of the wax can be measured using, for example, a commercially available high temperature wettability tester in accordance with the “wet test method” defined in JIS Z3191:2003.
- the wettability of the solder can be measured by using a commercially available solder wettability tester or the like in conformity with “solder wettability” defined in JIS C60068-2-83:2014, for example.
- the joining material When joining the first lead terminal to the first terminal connecting portion 12, the joining material is melted on the first terminal connecting portion 12, and the first lead terminal is cooled in a state of being in contact with the molten joining material, and then the joining material is joined. Solidify. If the wettability of the first inner side surface 14 of the first region 14a with respect to the joint material is lower than that of the first terminal connection portion 12, the first terminal connection portion 12 and the first region even when the melt joint material flows. It stays at the boundary with 14a, that is, the boundary where the wettability changes. Therefore, it is reduced that the bonding material crosses the boundary and flows into the first region 14a side.
- the presence of an unintended conductor (bonding material) in the recess 11 can be reduced, fluctuations in the characteristic impedance of the lead terminal and the signal wiring conductor in the wiring substrate 1 can be reduced, and the frequency characteristics of the high frequency signal can be improved. Can be made to.
- the wettability of the surface of the first terminal connecting portion 12 is the wettability of the surface of the first metal layer 12a
- the wettability of the surface of the first region 14a is the dielectric material of the dielectric substrate 10.
- the wettability of the exposed surface of the ceramic material If the wettability of the surface of the first region 14a is lower than the wettability of the surface of the first terminal connecting portion 12, the dielectric material is exposed on the surface of the first region 14a. It does not have to be.
- a layer made of a metal or another material is located in the first region 14a, and the wettability of the surface of the layer may be lower than the wettability of the surface of the first terminal connecting portion 12.
- the above-mentioned effect can be obtained. That is, if the surface of the first terminal connecting portion 12 is the surface of the first metal layer 12a and the surface of the first region 14a is the surface of the dielectric material of the dielectric substrate 10 exposed, Depending on the difference in the constituent materials, the above-mentioned magnitude relationship of wettability is satisfied. Therefore, even in such a case, it is possible to reduce the flow of the melt-bonded material to the first region 14a side.
- the dielectric substrate 10 may further have a ground conductor layer 18 that covers the second region 14b of the first inner side surface 14.
- the ground conductor layer 18 may be, for example, a metallized layer formed in the second region 14b.
- the metallized layer is made of a metal material such as tungsten, molybdenum and manganese, and may be further nickel-plated or gold-plated.
- the surface of the second region 14b becomes the surface of the ground conductor layer 18.
- the second wetting property of the bonding material with respect to the surface of the first region 14a is lower than the third wetting property of the bonding material with respect to the surface of the ground conductor layer 18.
- the grounding conductor layer 18 can further stabilize the grounding potential by being electrically connected to, for example, the grounding wiring conductor or the grounding conductor layer of the dielectric substrate 10.
- the ground conductor layer 18 covers the second region 14b and further covers the bottom surface 16 so as to cover the bottom surface of the second recess 11a between the adjacent second terminal connection portions 13. Also covers. Furthermore, in the present embodiment, as described above, the first terminal connection portion 12, the two second terminal connection portions 13, and the first terminal connection portion 12 are arranged in this order. Therefore, in addition to the recess 11 described above, a second recess and another recess (the other recess 11) are arranged in this order between these terminal connection portions.
- the ground conductor layer 18 extends to the other recess 11, and may cover the bottom surface 16 and the second region 14b of the other recess 11.
- the third inner side surface 17 is formed in the thickness direction of the dielectric substrate 10 (the direction connecting the first surface 10a and the second surface 10b, more specifically, in the first surface 10a and the second surface 10b).
- the groove portion 19 has, for example, a semicircular shape in a plan view. Alternatively, the shape may be rectangular, semi-elliptical, or the like.
- the dielectric material of the dielectric substrate 10 is exposed on the inner surface of the groove portion 19. By providing the groove portion 19, the dielectric constant between the first terminal connecting portion 12 and the second terminal connecting portion 13 is lowered.
- the distance between the first terminal connection portion 12 and the second terminal connection portion 13 can be reduced without changing the characteristic impedance, and the wiring board 1 can be downsized or the terminals can be made denser. It can be (multi-pin).
- the inner surface of the groove portion 19 is continuous with the first inner side surface 14 via the third inner side surface 17 and directly with the second inner side surface 15. With such a configuration, it becomes easy to manufacture the recess 11 in which the metal layer is provided on the desired surface.
- the first terminal connecting portion 12 may include a step portion 20 in which a part of the first side surface 10c side is located on the second side 10b side.
- the rectangular portion 20a connected to the first side surface 10c is located closer to the second surface 10b side than the other portion by one step (e.g., one layer of the insulating layer).
- the first metal layer 12a may also be provided on the stepped portion 20. That is, the step portion 20 has, in addition to the rectangular portion 20a, a wall surface portion 20b located between the rectangular portion 20a and another portion, and the first metal layer 12a also includes the wall portion 20b. It may be provided.
- the area of the first terminal connecting portion 12, that is, the first metal layer 12a is when the first terminal connecting portion 12 includes the step portion 20. Since the area of is increased by the amount of the wall surface portion 20b, the ground potential is further stabilized.
- the shape of the step portion 20 is rectangular, but the shape is not limited to this, and a polygonal shape or a semicircular shape other than the rectangular shape may be used. Even with a stepped portion having such a shape, the area of the first terminal connecting portion 12 is increased by the amount of the wall surface portion, so that the ground potential is further stabilized.
- the second terminal connecting portion 13 further has a covering layer 21 located on the first side surface 10c side.
- the joining material When joining the second lead terminal to the second terminal connecting portion 13, the joining material is melted on the second terminal connecting portion 13, and the second lead terminal is cooled in a state of being in contact with the molten joining material, and then the joining material is joined. Solidify. At this time, the molten bonding material is dammed at the boundary between the second metal layer 13a and the coating layer 21, and the spread of the molten bonding material on the second terminal connection portion 13 is reduced. When the spread of the molten bonding material is reduced, an appropriate fillet of the bonding material is formed, and the bonding force of the second lead terminal can be improved.
- the material of the coating layer 21 is not limited as long as it can block the molten bonding material.
- the coating layer 21 is similar to the dielectric material of the dielectric substrate 10, for example, an aluminum oxide sintered body, a mullite sintered body, a silicon carbide sintered body, an aluminum nitride sintered body or a silicon nitride sintered body. Ceramic materials such as aggregates or glass ceramic materials can be used.
- the second terminal connecting portion 13 has, for example, the second metal layer 13a, and the coating layer 21 has a second metal that has a better wettability of the bonding material with respect to the surface thereof. It will be lower than layer 13a.
- the melt-bonded material is blocked at the boundary between the second metal layer 13a and the coating layer 21 due to the difference in wettability.
- the dielectric material of the dielectric substrate 10 and the dielectric material of the coating layer 21 may be the same material or different materials.
- the coating layer 21 may be a material other than the dielectric material, including a metal material.
- the molten bonding material may be dammed by a step in which the thickness of the coating layer 21 is equal to or more than a certain level. That is, since the surface of the second metal layer 13a is located closer to the second surface 10b than the surface of the coating layer 21, a step is provided on the surface of the second terminal connecting portion 13 to block the molten bonding material. May be good.
- the coating layer 21 is located over the entire edge portion. That is, the covering layer 21 is located over the entire length of the edge portion in the direction along the first side surface 10c.
- the position of the coating layer 21 may be located at a part of the edge portion as long as the molten bonding material can be blocked. For example, it may be located only in the center of the edge portion, or may be located at both ends except the center.
- the dielectric substrate 10 further includes a dielectric material layer 22 located on the ground conductor layer 18.
- the dielectric material layer 22 may be located on the surface of the ground conductor layer 18 located at least in the second region 14b.
- the material of the dielectric material layer 22 is similar to the dielectric material of the dielectric substrate 10, for example, aluminum oxide sintered body, mullite sintered body, silicon carbide sintered body, aluminum nitride sintered body or A ceramic material such as a silicon nitride sintered body or a glass ceramic material can be used.
- the dielectric material layer 22 extends to the bottom surface 16 of the recess 11 and covers the ground conductor layer 18, and the dielectric material is made so that the ground conductor layer 18 is not exposed in the recess 11. Layer 22 covers the entire ground conductor layer 18. The dielectric material layer 22 is not provided in the above-mentioned second recess 11a.
- the ground conductor layer 18 covers the entire first inner side surface 14, that is, the first region 14a and the second region 14b, and also covers the bottom face 16. Furthermore, the ground conductor layer 18 also covers the bottom surface of the second recess 11a between the second terminal connection portions 13, extends to the recess 11 on the opposite side (the other recess 11 described above), and the bottom surface 16 and the 1 also covers the entire inner surface 14. Further, the grounding conductor layer 18 is connected to the first metal layer 12a of the first terminal connecting portion 12, and by being electrically connected to the first metal layer 12a, the grounding potential can be further stabilized.
- the dielectric material layer 22 covers the entire ground conductor layer 18 in the recess 11 so that the ground conductor layer 18 is not exposed, and is also located on the second inner side surface 15. That is, the dielectric material layer 22 is located at least on the first inner side surface 14, the second inner side surface 15, and the bottom surface 16 of the recess 11. The dielectric material layer 22 may be further located on the third inner side surface 17, or may be located on the entire inner surface of the recess 11.
- the wettability of the surface of the first terminal connecting portion 12 is the first wettability of the surface of the first metal layer 12a, and the wettability of the surface of the first region 14a is the same as that of the first region 14a.
- This is the second wettability of the surface of the dielectric material layer 22 located on the ground conductor layer 18. Since the material of the dielectric material layer 22 is similar to the dielectric material of the dielectric substrate 10 as described above, the second wettability of the surface of the dielectric material layer 22 depends on the dielectric material of the dielectric substrate 10. It has the same wettability as the wettability of the exposed surface.
- the fifth embodiment of the present disclosure will be described with reference to FIG.
- the position where the dielectric material layer 22 is provided is different from that in the fourth embodiment.
- the ground conductor layer 18 is located in the same manner as in the fourth embodiment, whereby the ground potential can be further stabilized.
- the dielectric material layer 22 covers the portion of the grounding conductor layer 18 located in the first region 14a of the first inner side surface 14 in the recess 11.
- the wettability of the surface of the first terminal connecting portion 12 is the first wettability of the surface of the first metal layer 12a
- the wettability of the surface of the first region 14a is the same as that of the first region 14a.
- This is the second wettability of the surface of the dielectric material layer 22 located on the ground conductor layer 18. Since the material of the dielectric material layer 22 is similar to the dielectric material of the dielectric substrate 10 as described above, the second wettability of the surface of the dielectric material layer 22 depends on the dielectric material of the dielectric substrate 10. It has the same wettability as the wettability of the exposed surface.
- the wiring board 1 is joined to the first lead terminal 31 and the second terminal connecting portion 13 which are joined to the first terminal connecting portion 12 via a joining material in addition to the above-mentioned dielectric substrate 10.
- the 2nd lead terminal 32 joined via material is further provided.
- the first lead terminal 31 is a ground terminal
- the second lead terminal 32 is a signal terminal.
- the first lead terminal 31 and the second lead terminal 32 are further connected to an external mounting board or the like.
- the dielectric substrate 10 is manufactured as follows, for example, when a plurality of insulating layers are made of an aluminum oxide sintered body. First, an appropriate organic binder, solvent, etc. are added and mixed with raw material powders such as aluminum oxide and silicon oxide to prepare a slurry. Next, a plurality of ceramic green sheets are produced by molding the slurry into a sheet by a molding method such as a doctor blade method. At this time, a notch to be a recess 11 is formed in a part of the green sheet.
- the dielectric substrate 10 having a desired shape can be manufactured.
- the first metal layer 12a, the second metal layer 13a, and the ground conductor and the signal conductor are formed as follows if they are metallized layers made of a high melting point metal such as tungsten, molybdenum, or manganese. be able to. That is, first, a metal powder having a high melting point is kneaded so as to be well mixed with an organic solvent and a binder to prepare a metal paste. This metal paste is printed on a predetermined portion of the ceramic green sheet, which is the upper surface or the lower surface of the insulating layer, by a method such as screen printing. Then, the ceramic green sheets on which these metal pastes are printed are laminated and crimped, and simultaneously fired.
- a high melting point metal such as tungsten, molybdenum, or manganese.
- the metallization layer is deposited on the upper surface and the inner layer of the dielectric substrate 10 as the first metal layer 12a, the second metal layer 13a, and the ground conductor and the signal conductor. At this time, the metallized layer is not formed in the first region 14a of the first inner side surface 14 of the recess 11. Further, nickel plating or gold plating may be provided on the surfaces of the first metal layer 12a, the second metal layer 13a, and each conductor layer.
- the same metal paste as that for forming each conductor layer is filled in the through holes provided in the ceramic green sheets to be a plurality of insulating layers, and the respective ceramic green sheets are laminated and pressure-bonded.
- the through hole can be formed by, for example, a mechanical punching process using a metal pin or a drilling process such as a process using a laser beam.
- a means such as vacuum suction may be used in combination to facilitate the filling of the metal paste.
- the electronic component package 50 includes a base 2 and a wiring board 1 joined to the base 2.
- the side wall body 4 is attached to the U-shaped wiring board 1 to form a frame, which is joined to the surface of the base 2.
- the substrate 2 and the side wall 4 are made of, for example, a metal such as iron, copper, nickel, chromium, cobalt, molybdenum or tungsten, or an alloy of these metals such as copper-tungsten alloy, copper-molybdenum alloy, iron-nickel-.
- a cobalt alloy or the like can be used.
- the electronic device 100 includes a package 50 for electronic components, an electronic component 3, and a lid 5.
- the electronic component 3 is mounted on the substrate 2 and electrically connected to the wiring board 1.
- the electronic component 3 may be, for example, an optical semiconductor element such as a laser diode (LD) or a photodiode (PD).
- LD laser diode
- PD photodiode
- the lid 5 is joined to the upper ends of the frame-shaped wiring board 1 and the side wall 4 so as to cover the inside of the electronic component package 50.
- the lid 5 may be a metal such as iron, copper, nickel, chromium, cobalt, molybdenum or tungsten, or an alloy of these metals such as copper-tungsten alloy, copper-molybdenum alloy, iron-nickel-cobalt alloy and the like. Can be used. By subjecting such a metal material ingot to a metal processing method such as a rolling process or a punching process, a metal member constituting the lid 5 can be produced.
- the electronic component 3 is mounted inside the electronic component package 50, and the electronic component 3 and the wiring board 1 are electrically connected by, for example, a bonding wire. Further, the inside is closed with the lid 5. ..
- the electronic component package 50 and the electronic device 100 of the present embodiment include the wiring board 1 capable of improving the frequency characteristics described above, high frequency signals can be satisfactorily transmitted.
- the present disclosure is not limited to the above-described embodiments, and combinations and various modifications of the embodiments can be made without departing from the gist of the present disclosure.
- the stepped portion 20 of the first embodiment may be provided in another embodiment
- the covering layer 21 of the second embodiment may be provided in another embodiment.
- the electronic component package 50 and the electronic device 100 may include any of the above-described embodiments and the wiring board 1 in which they are combined.
- the first region 14a is connected to the first terminal connection portion 12, but the present invention is not limited to this.
- the edge portion of the first terminal connection portion 12 on the first inner side surface 14 side may be provided with a configuration corresponding to the coating layer 21, and the edge portion of the first region 14a on the first terminal connection portion 12 side may be provided.
- a structure corresponding to the ground conductor layer 18 may be provided.
- first region 14a and the second region 14b are connected to each other on the first inner side surface 14 of the recess 11, but the first region 14a and the second region 14b are connected to each other. Not limited to what you have. Another region may be located between the first region 14a and the second region 14b. All changes, etc. that belong to the scope of claims are within the scope of the present disclosure.
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Abstract
Description
前記第1面は、前記第1側面に沿って位置する、第1接続部および第2接続部を含み、
前記凹部は、前記第1接続部と前記第2接続部との間に位置しているとともに、前記第1接続部に連なる第1内側面と、前記第2接続部に連なる第2内側面と、前記第1内側面と前記第2内側面との間に位置する底面と、を含み、
前記第1内側面は、第1領域と、該第1領域よりも前記底面に近接して位置する第2領域と、を含み、
前記第1接続部に対する接合材の第1ぬれ性より前記第1領域に対する前記接合材の第2ぬれ性が低い構成である。
前記基体に接合された、上記の配線基板と、を備える構成である。
前記基体に実装された、前記配線基板と電気的に接続された電子部品と、を備える構成である。
2 基体
3 電子部品
4 側壁体
5 蓋体
10 誘電体基板
10a 第1面
10b 第2面
10c 第1側面
11 凹部
11a 第2凹部
12 第1端子接続部
12a 第1金属層
13 第2端子接続部
13a 第2金属層
14 第1内側面
14a 第1領域
14b 第2領域
15 第2内側面
16 底面
17 第3内側面
18 接地導体層
19 溝部
20 段差部
20a 矩形状部分
20b 壁面部分
21 被覆層
22 誘電体材料層
31 第1リード端子
32 第2リード端子
40 貫通孔
50 電子部品用パッケージ
100 電子装置
Claims (13)
- 第1面と、前記第1面と反対側の第2面と、前記第1面および前記第2面に連なる第1側面と、前記第1面および前記第1側面に開口している凹部と、を有する誘電体基板を備え、
前記第1面は、前記第1側面に沿って位置する、第1接続部および第2接続部を含み、
前記凹部は、前記第1接続部と前記第2接続部との間に位置しているとともに、前記第1接続部に連なる第1内側面と、前記第2接続部に連なる第2内側面と、前記第1内側面と前記第2内側面との間に位置する底面と、を含み、
前記第1内側面は、第1領域と、該第1領域よりも前記底面に近接して位置する第2領域と、を含み、
前記第1接続部に対する接合材の第1ぬれ性より前記第1領域に対する前記接合材の第2ぬれ性が低い、配線基板。 - 前記第1接続部と前記第1領域とが連なっている、請求項1記載の配線基板。
- 前記第2ぬれ性は、前記第2領域に対する前記接合材の第3ぬれ性より低い、請求項1または2に記載の配線基板。
- 前記第1接続部は金属層であり、
前記第1領域は、前記誘電体基板の誘電体材料が位置している、請求項1~3のいずれか1つに記載の配線基板。 - 前記第1接続部の前記第1側面に近接して位置する第1端部は、前記第2面に向かって凹んだ段差部を含む、請求項1~4のいずれか1つに記載の配線基板。
- 前記第2接続部の前記第1側面に近接して位置する第2端部は、被覆層で被覆されている、請求項1~5のいずれか1つに記載の配線基板。
- 前記凹部は、前記第1内側面および前記第2内側面に連なる第3内側面を含み、
前記第3内側面は、前記誘電体基板の厚さ方向に延びる溝部を有する、請求項1~6のいずれか1つに記載の配線基板。 - 前記誘電体基板は、前記第1内側面の少なくとも一部を被覆する接地導体層をさらに有する、請求項1~7のいずれか1つに記載の配線基板。
- 前記誘電体基板は、前記接地導体層上に位置する、誘電体材料層をさらに有する、請求項8記載の配線基板。
- 前記第1接続部に前記接合材を介して接合される第1端子と、前記第2接続部に前記接合材を介して接合される第2端子と、をさらに備える、請求項1~9のいずれか1つに記載の配線基板。
- 第1面と、前記第1面と反対側の第2面と、前記第1面および前記第2面に連なる第1側面と、前記第1面および前記第1側面に開口している凹部と、を有する誘電体基板を備え、
前記第1面は、前記第1側面に沿って位置する、第1接続部および第2接続部を含み、
前記凹部は、前記第1接続部と前記第2接続部との間に位置し、前記第1接続部に連なる第1内側面と、前記第2接続部に連なる第2内側面と、前記第1内側面と前記第2内側面との間に位置する底面と、を含み、
前記第1内側面は、第1領域と、該第1領域よりも前記底面に近接して位置する第2領域と、を含み、
前記第1端子接続部は金属層を含み、前記第1端子接続部の前記表面は前記金属層の表面であり、
前記第1領域は、前記誘電体基板の誘電体材料が位置している、配線基板。 - 基体と、
前記基体に接合された、請求項1~11のいずれか1つに記載の配線基板と、を備える電子部品用パッケージ。 - 請求項12に記載の電子部品用パッケージと、
前記基体に実装された、前記配線基板と電気的に接続された電子部品と、を備える電子装置。
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CN202080018738.4A CN113519048A (zh) | 2019-03-07 | 2020-03-09 | 布线基板、电子部件用封装体以及电子装置 |
US17/436,111 US20220165889A1 (en) | 2019-03-07 | 2020-03-09 | Wiring board, electronic component package, and electronic apparatus |
EP20765758.6A EP3937223A4 (en) | 2019-03-07 | 2020-03-09 | WIRING BOARD, ELECTRONIC COMPONENT BOX AND ELECTRONIC DEVICE |
JP2021503681A JP7145311B2 (ja) | 2019-03-07 | 2020-03-09 | 配線基板、電子部品用パッケージおよび電子装置 |
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