WO2013180247A1 - 配線基板および電子装置 - Google Patents
配線基板および電子装置 Download PDFInfo
- Publication number
- WO2013180247A1 WO2013180247A1 PCT/JP2013/065112 JP2013065112W WO2013180247A1 WO 2013180247 A1 WO2013180247 A1 WO 2013180247A1 JP 2013065112 W JP2013065112 W JP 2013065112W WO 2013180247 A1 WO2013180247 A1 WO 2013180247A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring board
- convex portion
- wiring
- terminal
- insulating substrate
- Prior art date
Links
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 9
- 229910052737 gold Inorganic materials 0.000 description 9
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
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- 239000011572 manganese Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 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
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 239000003870 refractory metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
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- 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
- H05K1/111—Pads for surface mounting, e.g. lay-out
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
-
- 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/1517—Multilayer substrate
- H01L2924/15172—Fan-out arrangement of the internal vias
- H01L2924/15174—Fan-out arrangement of the internal vias in different layers of the multilayer substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/483—Containers
- H01L33/486—Containers adapted for surface mounting
-
- 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
-
- 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
- H05K1/111—Pads for surface mounting, e.g. lay-out
- H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0364—Conductor shape
- H05K2201/0367—Metallic bump or raised conductor not used as solder bump
-
- 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
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating 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
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/0939—Curved pads, e.g. semi-circular or elliptical pads or lands
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a wiring board and an electronic device for mounting an electronic component.
- a wiring board for mounting electronic components is composed of an insulating board made of an electrically insulating material and a conductor provided on the insulating board.
- Such a wiring board has, for example, a concave portion (castellation) provided from the side surface to the lower surface, and is provided from the inner surface of the concave portion to the lower surface of the wiring substrate, and a conductor (castellation) used as an external terminal.
- a device having a conductor is known (for example, see Patent Document 1).
- a wiring board includes two opposing main surfaces, a side surface connected to the two main surfaces, and a recess from the side surface, and connected to at least one main surface of the two main surfaces.
- An insulating substrate having a recess, and an external terminal provided from the one main surface to the inner surface of the recess and having a convex portion provided along the recess on the one main surface side. ing.
- An electronic device includes a wiring board having the above-described configuration and an electronic component mounted on the wiring board.
- the wiring board according to one aspect of the present invention, two opposing main surfaces, a side surface connected to the two main surfaces, and a recess from the side surface, and at least one main surface of the two main surfaces And an insulating substrate having a recess connected to the inner surface of the recess, and an external terminal having a convex portion provided along the recess on the one main surface side. Therefore, when the wiring board is bonded to an external circuit board, the stress applied to the external terminal is dispersed by the convex portion even if a force in the horizontal direction is applied to the main surface of the wiring board with respect to the bonding portion. Therefore, the possibility that the wiring board is peeled off from the external circuit board can be reduced.
- the bonding strength between the electronic device and the external circuit board is improved. it can.
- FIG. 2 is a cross-sectional view taken along line AA of the wiring board shown in FIG.
- A) And (b) is sectional drawing which shows the 1st manufacturing method of the external terminal of the wiring board in the 1st Embodiment of this invention.
- A) And (b) is sectional drawing which shows the 2nd manufacturing method of the external terminal of the wiring board in the 1st Embodiment of this invention.
- A) And (b) is sectional drawing which shows the 3rd manufacturing method of the external terminal of the wiring board in the 1st Embodiment of this invention.
- (A) is a top view which shows the wiring board in the 2nd Embodiment of this invention
- (b) is sectional drawing in the AA of (a). It is a bottom view which shows the wiring board in the 3rd Embodiment of this invention.
- (A) is another example of the top view which shows the wiring board in the 1st Embodiment of this invention
- (b) is a bottom view of (a). It is sectional drawing in the AA of the wiring board shown by Fig.8 (a). It is another example of the bottom view which shows the wiring board in the 1st Embodiment of this invention.
- the electronic device according to the first embodiment of the present invention includes a wiring board 1 and an electronic component 2 provided on the upper surface of the wiring board 1.
- the electronic device is mounted on a circuit board that constitutes an electronic component module, for example.
- the wiring substrate 1 includes two opposing main surfaces, two side surfaces connected to the two main surfaces, and an insulating substrate 11 that is recessed from the side surfaces and has a recess 12 that is connected to at least one of the two main surfaces.
- An external terminal 13 having a convex portion 131 provided from one main surface to the inner surface of the concave portion 12 and provided along the concave portion 12 on one main surface side, and a wiring provided on the insulating substrate 11 And a conductor 14. 1 and 2, the electronic device is mounted on an xy plane in a virtual xyz space. 2 to 5, the upward direction means the positive direction of the virtual z-axis.
- the insulating substrate 11 has an upper surface including the mounting area of the electronic component 2 and has a rectangular plate shape in plan view.
- the insulating substrate 11 functions as a support for supporting the electronic component 2, and the electronic component 2 is bonded and fixed to the mounting area at the center of the upper surface via a bonding agent such as a low melting point brazing material or a conductive resin.
- the insulating substrate 11 may be made of ceramics such as an aluminum oxide sintered body (alumina ceramic), an aluminum nitride sintered body, a mullite sintered body, or a glass ceramic sintered body.
- alumina ceramic aluminum oxide sintered body
- aluminum nitride sintered body aluminum nitride sintered body
- mullite sintered body a glass ceramic sintered body
- the insulating substrate 11 is manufactured using a resin material, for example, an epoxy resin, a polyimide resin, an acrylic resin, a phenol resin, a polyester resin, or a fluororesin such as a tetrafluoroethylene resin is used. Can do.
- a resin material for example, an epoxy resin, a polyimide resin, an acrylic resin, a phenol resin, a polyester resin, or a fluororesin such as a tetrafluoroethylene resin is used. Can do.
- the insulating substrate 11 is made of, for example, an aluminum oxide sintered body, a suitable organic binder and solvent are added to and mixed with raw material powders such as aluminum oxide, silicon oxide, magnesium oxide and calcium oxide to form a slurry. Then, this is formed into a sheet shape by the doctor blade method or the calender roll method to obtain a ceramic green sheet. After that, the ceramic green sheet is subjected to appropriate punching processing, and a plurality of these are laminated to obtain a high temperature (about 1600 Manufactured by baking at a temperature of ° C.
- a suitable organic binder and solvent are added to and mixed with raw material powders such as aluminum oxide, silicon oxide, magnesium oxide and calcium oxide to form a slurry. Then, this is formed into a sheet shape by the doctor blade method or the calender roll method to obtain a ceramic green sheet. After that, the ceramic green sheet is subjected to appropriate punching processing, and a plurality of these are laminated to obtain a high temperature (about 1600 Manufacture
- the recess 12 is provided on the side surface of the insulating substrate 11.
- the recess 12 may be provided from one main surface to the other main surface of the insulating substrate 11, or may be provided from the middle of the side surface of the insulating substrate 11 to the main surface.
- Such recesses 12 are formed by forming through holes to be the recesses 12 in some of the ceramic green sheets for the insulating substrate 11 by laser processing, punching with a mold, or the like.
- the wiring conductor 14 is provided on the surface and inside of the insulating substrate 11, and the wiring conductor 14 is for electrically connecting the electronic component 2 mounted on the wiring substrate 1 and an external circuit board. .
- the wiring conductor 14 includes a wiring conductor provided on the surface or inside of the insulating substrate 11, and a through conductor that electrically connects the wiring conductors that are positioned above and below the insulating layer constituting the insulating substrate 11. It is out.
- the external terminal 13 has a main surface region 13 a provided on the main surface of the insulating substrate 11 and a side surface region 13 b provided on the inner surface of the recess 12 on the side surface of the insulating substrate 11. To the inner surface of the recess 12.
- the external terminal 13 and the wiring conductor 14 can be made of a metal material such as tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag), or copper (Cu).
- a metal material such as tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag), or copper (Cu).
- W tungsten
- Mo molybdenum
- Mn manganese
- silver Ag
- Cu copper
- a conductive paste obtained by adding and mixing a suitable organic binder and solvent to a refractory metal powder such as W, Mo or Mn is insulated.
- the ceramic green sheet to be the substrate 11 is preliminarily printed and applied in a predetermined pattern by a screen printing method, and is fired simultaneously with the ceramic green sheet to be the insulating substrate 11, thereby being deposited on a predetermined position of the insulating substrate 11.
- a through hole is formed in the green sheet by punching by a die or punching or laser processing, and a conductive paste for the wiring conductor 14 is filled into the through hole by a printing method. It is formed by placing.
- the side surface region 13b of the external terminal 13 is formed by printing and applying a conductor paste for the external terminal 13 in a region that becomes the inner surface of the through hole that becomes the recess 12.
- the external terminals 13 and the wiring conductors 14 formed on the surface of the insulating substrate 11 are conductor pastes obtained by adding and mixing a suitable organic binder and solvent to metal powder such as copper and silver on the surface of the insulating substrate 11.
- the insulating substrate 11 is preliminarily printed and applied in a predetermined pattern by a screen printing method, and is fired at a temperature (about 1000 ° C.) lower than the temperature at which the ceramic green sheet for the insulating substrate 11 is fired. You may form by baking to the surface.
- a metal material made of a metal material such as copper, gold, aluminum, nickel, chromium, molybdenum, titanium, or an alloy thereof may be deposited on the surface of the insulating substrate 11 using a sputtering method, a vapor deposition method, or the like. good.
- the convex portion 131 protrudes from the surface of the external terminal 13 around the convex portion 131 by about 0.5 to 90 ⁇ m. Further, the convex portion 131 is provided in a region closer to the concave portion 12 than the central portion of the main surface region 13 a of the external terminal 13. Since the external terminal 13 has the convex portion 131, the bonding area between the external terminal 13 and the wiring of the external circuit board can be increased around the concave portion 12. Further, it is easy to form a fillet around the convex portion 131, and the bonding strength can be improved.
- the convex portion 131 is provided so as to surround the concave portion 12 as in the example shown in FIGS. 1, 6, and 7, the external terminal 13 and the external portion are surrounded by the region surrounding the concave portion 12.
- the junction area with the wiring of the circuit board can be increased.
- the amount of fillets can be increased so as to surround the recess 12. Therefore, the bonding strength between the wiring board 1 and the external circuit board can be improved.
- the end portion of the convex portion 131 is preferably disposed on the outer side of the wiring substrate 1 rather than the inner surface of the concave portion 12 on the center side of the wiring substrate 1.
- the convex portion 131 includes a plurality of convex portions, and when the plurality of convex portions are provided along the concave portions, the stress applied to the external terminal 13 is a plurality of stresses. Since the protrusions are further dispersed, the possibility that the wiring board 1 is peeled off from the external circuit board can be further reduced.
- the convex portion 131 is composed of one convex portion, and one convex portion is provided along the concave portion 12.
- the stress applied to the external terminal 13 is dispersed in a wide range by the convex portions connected to each other, so that the possibility that the wiring board 1 is peeled from the external circuit board can be further reduced.
- the convex portion 131 has a portion extending in the X direction and a portion extending in the Y direction as in the examples shown in FIGS. 1, 6, 8, and 10.
- the shape of the convex portion 131 is a shape having a portion that is orthogonal (bent at a right angle), or the convex portion 131 is composed of a plurality of convex portions, and the extension lines of the plurality of convex portions are arranged so as to be orthogonal to each other. It is preferable. With such a configuration, even if force in any direction horizontal to the main surface of the wiring board 1 is applied to the joint portion, the stress applied to the external terminal 13 is effectively dispersed by the convex portion 131. The possibility that the wiring board 1 is peeled from the external circuit board can be further reduced.
- the convex portion 131 can be manufactured, for example, by the following manufacturing method.
- the first manufacturing method of the projecting portion 131 is shown in FIG. 3B after the first terminal 13d is formed on the main surface of the insulating substrate 11, as in the example shown in FIG.
- the external terminal 13 having the convex portion 131 can be formed by forming the second terminal 13e in the region to be the convex portion 131 on the first terminal 13d.
- the external terminal 13 having the convex portion 131 can be formed by forming the second terminal 13e so as to cover the first terminal 13d. Since the second terminal 13e is formed on the first terminal 13d, the first terminal 13d may be, for example, 50% or less of the thickness of the second terminal 13e.
- the first terminal 13d on the main surface of the insulating substrate 11 is formed as in the example shown in FIG. 5A, and then the example shown in FIG. As described above, by forming the second terminal 13e so as to partially overlap the end portion of the first terminal 13d, the external terminal 13 having the convex portion 131 can be formed.
- the first terminal 13d and the second terminal 13e are formed by the same method using the same material as that of the external terminal 13 described above.
- the first terminal 13d and the second terminal 13e may be formed using the same method, or may be formed using different methods.
- the first terminal 13d is formed by printing and applying a conductive paste for the first terminal 13d on a ceramic green sheet for the insulating substrate 11 and firing the ceramic paste simultaneously with the ceramic green sheet for the insulating substrate 11. It is formed together with the side region 13b.
- the second terminal 13e is formed by, for example, printing and applying a conductive paste for the second terminal 13e on the insulating substrate 11, and then baking and baking it on the surface of the insulating substrate 11, or sputtering a metal material for the second terminal 13e. , By depositing it on the surface of the insulating substrate 11 using a vapor deposition method or the like.
- a vapor deposition method or the like By depositing it on the surface of the insulating substrate 11 using a vapor deposition method or the like.
- the side surface region 13b and the first terminal 13d and the second terminal 13e are manufactured by different methods as described above, the main surface region 13a and the side surface region 13b of the external terminal 13 are joined.
- the distance between the external terminals 13 and the position of the external terminals 13 on the main surface of the wiring board 1 can be formed with high accuracy.
- the first terminal 13d may be an insulating film.
- the first terminal 13d made of an insulating film is obtained by applying a ceramic paste obtained by adding and mixing an appropriate organic binder and solvent to a ceramic powder substantially the same as that of the insulating substrate 11 to a ceramic green sheet to be the insulating substrate 11.
- a predetermined pattern is printed and applied in advance by a screen printing method and fired at the same time as the ceramic green sheet to be the insulating substrate 11, thereby being deposited on a region to be the convex portion 131 of the main surface of the insulating substrate 11.
- a plating layer is applied to the exposed surfaces of the external terminal 13 and the wiring conductor 14 by electrolytic plating.
- the plating layer is made of a metal having excellent corrosion resistance such as nickel, copper, gold, or silver, and connectivity with a connection member.
- a nickel plating layer having a thickness of about 1 to 10 ⁇ m and a silver plating layer having a thickness of about 0.1 to 1 ⁇ m are sequentially deposited.
- a copper plating layer having a thickness of about 10 to 80 ⁇ m is deposited on the nickel plating layer so that the heat of the electronic component 2 can be dissipated well. It may be easier.
- a part of the surface of the main surface region 13a of the external terminal 13 including the convex portion 131 formed by the first to third manufacturing methods is plated more than other regions of the main surface region 13a of the external terminal 13.
- the height of the convex portion 131 can be increased, or the height of the main surface region 13a of the external terminal 13 excluding the convex portion 131 can be partially varied.
- An electronic device can be manufactured by mounting the electronic component 2 on the upper surface of the wiring board 1.
- the electronic component 2 mounted on the wiring board 1 is a semiconductor element such as an IC chip or an LSI chip, a light emitting element, a piezoelectric element such as a crystal oscillator or a piezoelectric vibrator, and various sensors.
- the semiconductor element is connected to the semiconductor element via a connection member 3 such as a solder bump, a gold bump, or a conductive resin (anisotropic conductive resin).
- connection member 3 such as a solder bump, a gold bump, or a conductive resin (anisotropic conductive resin).
- the electronic component 2 is a wire bonding type semiconductor element
- the semiconductor element is fixed to the electronic component mounting region by a bonding member, and then the electrode of the semiconductor element is connected via a connection member 3 such as a bonding wire.
- the wiring conductor 14 are mounted on the wiring substrate 1 by being electrically connected.
- a plurality of electronic components 2 may be mounted on the wiring board 1, or small electronic components such as a resistance element and a capacitive element may be mounted as necessary.
- the electronic component 2 is sealed with a sealing material 4 made of resin, glass, or the like, a lid made of resin, glass, ceramics, metal, or the like, as necessary.
- the bonding strength between the electronic device and the external circuit board is improved. it can.
- the electronic device according to the second embodiment of the present invention differs from the electronic device according to the first embodiment described above in that an external terminal 13 is an electronic component of an insulating substrate 11 as in the example shown in FIG. 2 is provided on the same main surface as the mounting surface.
- an external terminal 13 is an electronic component of an insulating substrate 11 as in the example shown in FIG. 2 is provided on the same main surface as the mounting surface.
- a member having a higher thermal conductivity than the insulating substrate 11 is bonded to the entire lower surface side of the wiring board 1.
- Examples of the material having a higher thermal conductivity than the insulating substrate 11 include metal materials such as copper (Cu), copper-tungsten (Cu—W), and aluminum (Al).
- the insulating substrate 11 may have an upper surface including the cavity 15 as in the example shown in FIG.
- Such cavities 15 are formed by forming through holes to be cavities 15 in a plurality of ceramic green sheets by laser processing or punching with a mold on the ceramic green sheets, and forming these through holes. It can be formed by laminating the ceramic green sheets. Further, when the insulating substrate 11 is thin, it is preferable that the through hole for the cavity 15 is formed by laser processing or punching with a mold after laminating ceramic green sheets, because it can be processed with high accuracy.
- the angle ⁇ formed between the inner surface of the cavity 15 and the bottom surface of the cavity 15 is an obtuse angle, as in the example shown in FIG. 110 to 145 degrees is preferable.
- the angle ⁇ is in such a range, it is easy to stably and efficiently form the inner surface of the through-hole serving as the cavity 15 by punching, and the light emitting device using the wiring board 1 can be easily downsized.
- the light emitted from the light emitting element can be emitted well toward the outside.
- the cavity 15 having such an inner surface of the angle ⁇ is formed by punching a ceramic green sheet using a punching die in which the clearance between the punch diameter and the die hole diameter is set large.
- the green sheet is punched when the ceramic green sheet is punched from the main surface side to the other main surface side. Is formed so that the diameter of the through hole spreads from the main surface side to the other main surface side by shearing from the edge of the contact surface to the edge of the contact surface with the die hole.
- the angle of the inner surface of the through hole formed in the ceramic green sheet can be adjusted by setting the clearance between the diameter of the punch and the diameter of the die hole according to the thickness of the ceramic green sheet.
- Such a punching method is high in productivity because the angle ⁇ formed by the inner surface of the cavity 15 and the bottom surface of the cavity 15 can be set to a desired angle only by punching.
- a truncated cone shape or a truncated pyramid shape is formed on the inner surface of the through hole.
- a through-hole having an angle ⁇ extending from one main surface side to the other main surface side as described above may be formed by pressing the mold. In such a case, the angle ⁇ formed by the inner surface of the cavity 15 and the bottom surface of the cavity 15 can be adjusted with higher accuracy.
- the wiring substrate 1 has an insulating substrate 11 having an upper surface including the cavity 15 on which the light emitting element is mounted, for example, a reflection layer for reflecting light emitted from the light emitting element is provided on the inner wall surface of the cavity 15. It may be done.
- the reflective layer has, for example, a metal conductor layer provided on the inner wall surface of the cavity 15 and a plating layer deposited on the metal conductor layer.
- the metal conductor layer can be formed by the same material and method as the external terminal 13 and the wiring conductor 14.
- a silver plating layer is deposited on the outermost surface of the metal conductor layer, and a gold plating layer is deposited on the outermost surfaces of the external terminal 13 and the wiring conductor 14. It is preferable.
- the gold plating layer is superior in bonding properties to the electronic component 2, the connection member 3, and the wiring of the external circuit board.
- the silver plating layer is more resistant to light than the gold plating layer. This is because the reflectance is high.
- the outermost surfaces of the wiring conductor 14 and the metal conductor layer may be an alloy plating layer of silver and gold, for example, an alloy plating layer that is a solid solution of silver and gold.
- the electronic device according to the third embodiment of the present invention is different from the electronic device according to the first embodiment described above when the convex portion 131 is viewed in plan as in the example shown in FIG.
- the edge of the convex portion on the concave portion 12 side is an arc shape.
- stress is generated around the convex portion 131. Since there is no corner portion that tends to concentrate, it is possible to reduce the possibility that the external terminal 13 and the joining member are separated.
- the external terminal 13b is formed on the inner surface of the recess 12 but may be filled in a part or all of the recess 12 in plan view.
- the convex portion 131 has a shape similar to the edge of the concave portion 12 on the concave portion 12 side of the convex portion. Even if a force in a horizontal direction is applied to the main surface of 1, the stress applied to the external terminal 13 is more effectively distributed by the convex portions 131 arranged continuously over a wide range, so that the wiring board 1 is externally connected. The possibility of peeling from the circuit board can be further reduced.
- a central terminal 13c may be provided.
- the central terminal 13c can be manufactured by the same material and method as those of the external terminal 13 and the wiring conductor 14, and the exposed surface is coated with the same plating layer as that of the external terminal 13 and the wiring conductor 14. Yes.
- the central terminal 13c is used for bonding to an external circuit board, for example, similarly to the external terminal 13.
- the lower surface of the central terminal 13c is formed to be lower than the convex portion 131 of the external terminal 13 formed along the concave portion 12, but it is shown in FIG.
- the convex portion 131 may be provided in the central portion of the central terminal 13c so as to have the same height or a higher height.
- the convex portion 131 of the central terminal 13c can be produced by the same method as the convex portion 131 of the external terminal 13.
- the distance between the concave portion 12 and the convex portion 131 in the vicinity of the central portion of the concave portion 12 is such that the distance between the concave portion 12 and the convex portion 131 at the end of the concave portion 12 is.
- the heat of the electronic component 2 is transferred to the central terminal if the mounting region of the electronic component 2 is located inside the convex portion 131 of the central terminal 13c in plan view. Heat can be transferred favorably to the external circuit board through 13c, and the wiring board 1 having excellent heat dissipation can be obtained.
- the thickness of the external terminal 13 may be different between the outer peripheral side and the central side with the convex portion 131 interposed therebetween.
- the thickness of the external terminal 13 on the outer circumferential side is thinner than the thickness of the external terminal 13 on the center side across the convex portion 131, the connection between the external terminal 13 and the wiring of the external circuit board around the concave portion 12 The area can be increased. Further, it is easy to form a fillet around the convex portion 131, and the bonding strength can be improved.
- the thickness of the external terminal 13 on the center side is large, the heat dissipation on the center side of the wiring board 1 can be increased.
- the end portion of the main surface region 13a may be positioned outside the wiring substrate 1 with respect to the convex portion 131.
- the wiring substrate 1 is formed with a through hole in the insulating substrate, and a metal member having better heat dissipation than the insulating substrate 11 on which the electronic component 2 is mounted is fitted into the through hole and joined to the insulating substrate.
- a metal member having better heat dissipation than the insulating substrate 11 is embedded in a region overlapping the region where the electronic component 2 is mounted in plan view. Also good.
- the wiring board 1 may be manufactured in the form of a multi-piece wiring board.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Structure Of Printed Boards (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
Abstract
Description
本発明の第1の実施形態における電子装置は、図1および図2に示されているように、配線基板1と、配線基板1の上面に設けられた電子部品2とを含んでいる。電子装置は、例えば電子部品モジュールを構成する回路基板上に実装される。
次に、本発明の第2の実施形態による電子装置について、図6を参照しつつ説明する。
次に、本発明の第3の実施形態による電子装置について、図7を参照しつつ説明する。
11・・・・絶縁基板
12・・・・凹部
13・・・・外部端子
131・・・・凸状部
13a・・・主面領域
13b・・・側面領域
13c・・・中央端子
13d・・・第1端子
13e・・・第2端子
14・・・・配線導体
15・・・・キャビティ
2・・・・電子部品
3・・・・接続部材
4・・・・封止材
Claims (8)
- 対向する2つの主面、該2つの主面とつながる側面、および該側面から窪んでおり、かつ前記2つの主面のうち少なくとも一方の主面とつながる凹部を有する絶縁基板と、
前記一方の主面から前記凹部の内面にかけて設けられており、かつ前記一方の主面側に前記凹部に沿って設けられた凸状部を有する外部端子とを備えていることを特徴とする配線基板。 - 前記凸状部は前記凹部を囲むように設けられていることを特徴とする請求項1に記載の配線基板。
- 前記凸状部は複数の凸部を含み、前記複数の凸部が前記凹部に沿って設けられていることを特徴とする請求項1または請求項2に記載の配線基板。
- 前記凸状部は一つの凸部からなり、前記一つの凸部が前記凹部に沿って設けられていることを特徴とする請求項1または請求項2に記載の配線基板。
- 平面視したときに、前記凸部が帯状をなしていることを特徴とする請求項3または請求項4に記載の配線基板。
- 平面視したときに、前記凸部の前記凹部側の縁が円弧状をなしていることを特徴とする請求項3乃至請求項5のいずれかに記載の配線基板。
- 平面視したときに、前記凸部の前記凹部側の縁が前記凹部の縁と相似な形状を有していることを特徴とする請求項4に記載の配線基板。
- 請求項1に記載の配線基板と、該配線基板に搭載された電子部品とを備えていることを特徴とする電子装置。
Priority Applications (3)
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US14/404,938 US9795034B2 (en) | 2012-05-30 | 2013-05-30 | Wiring board and electronic device |
CN201380028368.2A CN104335345B (zh) | 2012-05-30 | 2013-05-30 | 布线基板以及电子装置 |
JP2014518742A JP6133854B2 (ja) | 2012-05-30 | 2013-05-30 | 配線基板および電子装置 |
Applications Claiming Priority (2)
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JP2012123293 | 2012-05-30 | ||
JP2012-123293 | 2012-05-30 |
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WO2013180247A1 true WO2013180247A1 (ja) | 2013-12-05 |
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Family Applications (1)
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PCT/JP2013/065112 WO2013180247A1 (ja) | 2012-05-30 | 2013-05-30 | 配線基板および電子装置 |
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US (1) | US9795034B2 (ja) |
JP (1) | JP6133854B2 (ja) |
CN (1) | CN104335345B (ja) |
WO (1) | WO2013180247A1 (ja) |
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WO2015163354A1 (ja) * | 2014-04-22 | 2015-10-29 | 京セラ株式会社 | 配線基板、電子装置および電子モジュール |
JP2016009834A (ja) * | 2014-06-26 | 2016-01-18 | 京セラ株式会社 | 配線基板、電子装置および電子モジュール |
CN106688091A (zh) * | 2014-09-26 | 2017-05-17 | 京瓷株式会社 | 布线基板、电子装置以及电子模块 |
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US10241549B2 (en) * | 2013-12-25 | 2019-03-26 | Kyocera Corporation | Electronic apparatus |
WO2016208674A1 (ja) * | 2015-06-25 | 2016-12-29 | 京セラ株式会社 | 配線基板、電子装置および電子モジュール |
US11024572B2 (en) * | 2015-11-28 | 2021-06-01 | Kyocera Corporation | Wiring board, electronic device, and electronic module |
JP6720633B2 (ja) * | 2016-03-29 | 2020-07-08 | セイコーエプソン株式会社 | 電気光学装置、電気光学ユニットおよび電子機器 |
TWI711357B (zh) * | 2017-05-05 | 2020-11-21 | 乾坤科技股份有限公司 | 電子模塊與電路板 |
EP3633719A4 (en) * | 2017-05-26 | 2021-03-17 | Kyocera Corporation | SUBSTRATE FOR THE ASSEMBLY OF ELECTRONIC COMPONENTS, ELECTRONIC DEVICE AND ELECTRONIC MODULE |
JP7086536B2 (ja) * | 2017-07-26 | 2022-06-20 | 京セラ株式会社 | 電子素子実装用基板、電子装置および電子モジュール |
EP3817041B1 (en) * | 2018-06-26 | 2023-08-16 | Kyocera Corporation | Electronic element mounting substrate, electronic device, and electronic module |
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Also Published As
Publication number | Publication date |
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JP6133854B2 (ja) | 2017-05-24 |
US20150146397A1 (en) | 2015-05-28 |
US9795034B2 (en) | 2017-10-17 |
CN104335345B (zh) | 2018-01-26 |
JPWO2013180247A1 (ja) | 2016-01-21 |
CN104335345A (zh) | 2015-02-04 |
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