WO2015060387A1 - 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
- WO2015060387A1 WO2015060387A1 PCT/JP2014/078226 JP2014078226W WO2015060387A1 WO 2015060387 A1 WO2015060387 A1 WO 2015060387A1 JP 2014078226 W JP2014078226 W JP 2014078226W WO 2015060387 A1 WO2015060387 A1 WO 2015060387A1
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- WIPO (PCT)
- Prior art keywords
- conductor
- electrode
- wiring board
- notch
- wiring
- Prior art date
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- 239000004020 conductor Substances 0.000 claims abstract description 137
- 239000000758 substrate Substances 0.000 claims description 17
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
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- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
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- 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
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- 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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49805—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers the leads being also applied on the sidewalls or the bottom of the substrate, e.g. leadless packages for surface mounting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49838—Geometry or layout
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—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
- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L24/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
-
- 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
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector 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
- H01L2224/16221—Disposition the bump connector 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
- H01L2224/16225—Disposition the bump connector 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
-
- 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
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/13—Mountings, e.g. non-detachable insulating substrates characterised by the shape
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- 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
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- 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
- 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
- H05K2201/09145—Edge 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
- 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
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/0969—Apertured conductors
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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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4629—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating inorganic sheets comprising printed circuits, e.g. green ceramic sheets
Definitions
- the present invention relates to a wiring board and an electronic device.
- a wiring conductor is provided inside or on the surface of the insulating base, and a notch portion is provided from the side surface to the bottom surface of the insulating base and an electrode connected to the wiring conductor is provided on the inner surface thereof.
- the electrode of the wiring board is bonded to an electrode pad or the like of the external circuit board through a brazing material.
- the insulating substrate constituting the wiring board is made of ceramic
- the wiring board when the wiring board is manufactured, for example, when the ceramic green sheet laminate is laminated and pressed, the center part of the notch part is cut off when viewed from above. In some cases, it may be deformed so as to protrude inwardly of the notch, and there is a possibility that the wire conductor and the electrode may be disconnected or abnormal in resistance, and may not emit light normally when the electronic component is a light emitting device. .
- the wiring board of the present invention includes an insulating base having a side surface including a notch, an electrode provided on the inner surface of the notch, and an inside or a surface of the insulating base, and a connection conductor connected to the electrode. And the cutout portion has a width greater than the depth, and the connection conductor is connected to the electrode at an end in the width direction of the cutout portion.
- the electronic device of the present invention includes a wiring board having the above-described configuration and an electronic component mounted on the wiring board.
- the wiring board of the present invention includes an insulating base having a side surface including a notch, an electrode provided on the inner surface of the notch, and an interior or surface of the insulating base, and is connected to the electrode via a connection conductor.
- the notch part has a width larger than the depth, and the connection conductor is connected to the electrode at the end of the notch part in the width direction. Even if the laminated body is deformed so that the center portion of the cutout portion protrudes inward of the cutout portion when viewed from the top, the connection conductor and the electrode are formed at the small deformation portion, that is, the widthwise end portion of the cutout portion. Since they are connected, the connection conductor and the electrode are not easily cut. Therefore, the wiring conductor and the electrode do not break or become abnormal in resistance, and light is emitted well when the electronic component is a light emitting device.
- the electronic device of the present invention can be improved in terms of electrical reliability and electrical characteristics by including the wiring board having the above-described configuration.
- FIG. 1A is a top view which shows the electronic device in the 1st Embodiment of this invention
- FIG. 1B is a cross-sectional view taken along line BB of the electronic device shown in FIG.
- A) is the upper surface perspective view which shows the connection conductor of the wiring board shown to Fig.1 (a)
- (b) is a principal part expanded upper surface perspective view in the A section of (a).
- (A) And (b) is a principal part expansion internal upper surface perspective view which shows the circumference
- FIG. 5A is a cross-sectional view taken along line AA of the electronic device shown in FIG. 5A
- FIG. 5B is a cross-sectional view taken along line BB of the electronic device shown in FIG.
- A) is a top perspective view showing a connection conductor of the wiring board shown in FIG. 5 (a)
- (b) is an enlarged top perspective view of a main part in the A part of (a).
- (A) And (b) is a principal part expansion top perspective view which shows the circumference
- 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 constituting an electronic component module, for example.
- the wiring substrate 1 includes an insulating base 11 having a side surface including a notch 12, an electrode 13 provided on the inner surface of the notch 12, an inner or surface of the insulating base 11, and a connection conductor 14 connected to the electrode 13. And a wiring conductor 15 connected via the.
- the notch 12 has a width greater than the depth, and the connection conductor 14 is connected to the electrode 13 at the end of the notch 12 in the width direction.
- the electronic device is mounted on an xy plane in a virtual xyz space.
- the upward direction means the positive direction of the virtual z-axis. Note that in the examples shown in FIGS.
- the width direction of the notch 12 is along the outer side of the insulating base 11 provided with the notch 12 in a top view. It is a direction (y direction), and the depth direction of the notch 12 is a direction (x direction) orthogonal to the outer side of the insulating base 11 provided with the notch 12 in a top view.
- the insulating substrate 11 is composed of a plurality of insulating layers 11a, has an upper surface including a mounting area of the electronic component 2, and has a rectangular plate shape when viewed from above.
- 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 in 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 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. This is formed into a sheet by the doctor blade method or the calender roll method to obtain a ceramic green sheet. After that, the ceramic green sheet is appropriately punched and laminated in a plurality of layers to obtain a high temperature (about 1600 ° C). ).
- the notch 12 is provided on the side surface of the insulating base 11.
- the notch 12 is formed in a rectangular shape having a corner having an arc shape when viewed from above.
- the notch 12 may have a semi-elliptical shape or a semi-elliptical shape in a top view, or a rectangular shape having a plurality of steps.
- the notch 12 is formed long along the outer side direction of the insulating base 11, and the width is larger than the depth.
- the notch 12 may be provided from one main surface to the other main surface of the insulating base 11, or provided from the middle of the side surface of the insulating base 11 to the main surface as in the example shown in FIGS. It does not matter.
- Such notches 12 are formed by forming through holes to be the notches 12 in some of the ceramic green sheets for the insulating substrate 11 by laser machining or punching with a mold.
- the electrode 13 is provided on the inner surface of the notch 12, and is connected to the external electrode 13a on the lower surface of the insulating base 11. If the electrode 13 is provided at the end of the inner surface of the notch 12, the center of the notch 12 in the ceramic green sheet laminate when the wiring substrate 1 is manufactured is the notch 12. Even if it is deformed so as to project inwardly, it is preferable that the connection conductor 14 and the electrode 13 can be reliably connected at the small deformation portion, that is, the end portion in the width direction of the notch 12. Further, the electrode 13 may be extended by about 0.05 to 0.1 mm so as to surround the notch 12 in a top view at the connection portion with the connection conductor 14.
- the wiring conductor 15 is provided on the surface and inside of the insulating base 11.
- the wiring conductor 15 includes a wiring conductor provided on the surface of or inside the insulating base 11, and a through conductor that electrically connects the wiring conductors that are positioned above and below the insulating layer 11a constituting the insulating base 11. Contains.
- a metal material such as tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag), or copper (Cu) can be used for the electrode 13, the external electrode 13a, the connection conductor 14, and the wiring conductor 15.
- 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 base 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 base 11, thereby being deposited on a predetermined position of the insulating base 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 15 is filled into the through hole by a printing method. It is formed by placing.
- the electrode 13 is formed by printing and applying a conductive paste for the electrode 13 in a region that becomes the inner surface of the through hole that becomes the notch 12.
- connection conductor 14 may be wider than the wiring conductor 15 as in the example shown in FIG. 3, and the connection conductor 14 is connected to the electrode 13 at the end in the width direction of the notch 12.
- the connecting conductor 14 is wider than the wiring conductor 15 because the electrical resistance between the wiring conductor 15 and the electrode 13 is small.
- the width of the connection conductor 14 is W1
- the width of the wiring conductor 15 is W2
- W1 ⁇ 1.5W2 the center of the notch 12 is seen in the ceramic green sheet laminate when the wiring substrate 1 is manufactured.
- connection conductor 14 and the electrode 13 can be connected also on the center side near the end in the width direction of the notch 12, which is preferable. As a result, the electrical connection between the electrode 13 and the connection conductor 14 and the electrical connection between the connection conductor 14 and the wiring conductor 15 can be improved.
- the electrode 13 is provided at the end of the inner surface of the notch 12, and the connection conductor 14 is connected to the electrode 13 at the width equal to the width of the electrode 13.
- the connection conductor 14 may have the same width between the wiring conductor 15 and the electrode 13 as in the example shown in FIG. 4A, or as shown in the example shown in FIG. The width may be gradually reduced from the connection portion with the electrode 13 to the connection portion with the wiring conductor 15.
- the electrode 13 is provided at the end of the inner surface of the notch 12, and the connection conductor 14 has a width equal to the width of the electrode 13.
- both end parts in the width direction of the notch part 12 are small deformation parts. Since the connection conductor 14 and the electrode 13 are connected to each other, it is possible to effectively prevent the connection conductor 14 and the electrode 13 from being cut. Further, since the connection conductor 14 is wider, not only at the end portion in the width direction of the notch portion 12, but also at the center portion side near the end portion in the width direction of the notch portion 12 with relatively small deformation. This is preferable because the connection conductor 14 and the electrode 13 can be reliably connected. Further, since the connection conductor 14 is wider, the electrical resistance of the connection conductor 14 is small. Also, if the width gradually decreases from the connection portion with the electrode 13 to the connection portion with the wiring conductor 15, the impedance at the connection portion with the wiring conductor 15 from the connection portion with the electrode 13 becomes difficult to change suddenly. ,preferable.
- connection conductor 15 side of the connection conductor 14 is wide, the connection conductor 14 and the wiring conductor 15 This is preferable because the degree of freedom of the connection position is improved.
- the wiring conductor 15 is connected at the center in the width direction of the connection conductor 14 in a top view.
- connection conductor 14 that is, the distance from the end of the connection conductor 14 on the wiring conductor 15 side to the notch 12 is preferably 0.2 mm or more. Thereby, the electrical connection between the electrode 13 and the wiring conductor 15 can be improved.
- a plating layer is deposited on the exposed surfaces of the electrode 13, the external electrode 13a and the wiring conductor 15 by electroplating.
- the plating layer is made of a metal having excellent corrosion resistance such as nickel, copper, gold or silver and excellent connection with the connection member 3 such as a bonding wire.
- the plating layer has a thickness of about 0.5 to 5 ⁇ m and a thickness of 0.1 to A gold plating layer of about 3 ⁇ m, or a nickel plating layer of about 1 to 10 ⁇ m thickness and a silver plating layer of about 0.1 to 1 ⁇ m are sequentially deposited.
- the electrode 13 and the wiring conductor 15 can be effectively prevented from being corroded, the wiring conductor 15 and the electronic component 2 are fixed, and the wiring conductor 15 and the connection member 3 such as a bonding wire are bonded. Further, the bonding between the electrode 13 and the external electrode 13a and the wiring of the external circuit board can be strengthened.
- a copper plating layer having a thickness of about 10 to 80 ⁇ m may be deposited so that the heat of the electronic component 2 can be easily radiated.
- the wiring board 1 can produce an electronic device by mounting the electronic component 2 on the upper surface.
- 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 vibrator 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 or the like).
- connection member 3 such as a solder bump, a gold bump, or a conductive resin (anisotropic conductive resin or the like).
- 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 15 are mounted on the wiring board 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 or a capacitor element may be mounted as necessary.
- the electronic component 2 is sealed with a sealing material 4 made of resin or glass, a lid made of resin or glass, ceramics, metal, or the like, if necessary.
- the insulating base 11 having a side surface including the notch 12, the electrode 13 provided on the inner surface of the notch 12, and the inside or the surface of the insulating base 11 are provided.
- connection conductor 14 and the electrode 13 are connected to the small deformation portion, that is, the end portion in the width direction of the cutout portion 12, it is difficult to cut. Therefore, the wiring conductor 15 and the electrode 13 do not break or become abnormal in resistance, and light is efficiently emitted when the electronic component 2 is a light emitting device.
- the wiring board 1 according to the present invention can be suitably used in the wiring board 1 in which the thickness of the insulating layer 11a and the thickness of the insulating base 11 are thin, and good electrical connection can be achieved in the thinned wiring board 1. it can.
- the wiring board 1 having the above-described configuration and the electronic component 2 mounted on the wiring board 1 are included, electrical reliability and electrical characteristics can be improved. It will be possible.
- connection conductor 14 is connected to the wiring conductor 15 side as shown in the examples shown in FIGS. This is a point having a slit 14a formed toward the notch 12 side.
- notch 12 has a rectangular shape with a step and the insulating substrate 11 has a cavity 16.
- connection conductor 14 since the connection conductor 14 has the slit 14a formed from the wiring conductor 15 side to the notch 12 side, the ceramic green sheet laminate is produced when the wiring board 1 is manufactured. Even if the center part of the notch 12 in the body is deformed so as to protrude inward of the notch 12 in a top view, even if a disconnection occurs at the center in the width direction of the connection conductor 14 in a top view, It becomes easy to suppress that a disconnection spreads outside the slit 14a, which is preferable. Further, when the connection conductor 14 is disposed between the insulating layers 11a as in the examples shown in FIGS.
- connection conductor 14 when the ceramic green sheets are stacked and pressed, the connection conductor 14 The ceramic green sheets are brought into contact with each other at the slit 14a with the conductor paste interposed therebetween, and the stress applied to the conductor paste for the connecting conductor 14 is dispersed, so that the insulating layers 11a are laminated around the notch 12 In addition, the electrical connection between the electrode 13 and the wiring conductor 15 can be improved.
- connection conductor 14 has the slit 14a in the part corresponding to the center part of the width direction of the notch part 12 like the example shown in FIG.7, FIG.8 (b), the wiring board 1 of FIG. Even when the ceramic green sheet laminate is deformed so that the center portion of the cutout portion 12 protrudes inward of the cutout portion 12 in a top view, the slit 14a corresponding to the center portion of the cutout portion 12 is formed. It is preferable that disconnection hardly occurs outside.
- the width of the connection conductor 14 indicates the total width of the connection conductor 14 in the region excluding the slit 14a.
- the width between the slits 14 a of the connection conductor 14 is preferably wider than the width of the wiring conductor 15.
- the ceramic green sheets are laminated at the time of manufacturing the wiring board 1, if the slits 14a are arranged so that the widths of the slits 14a are equal as in the examples shown in FIGS. In the body, the connection conductor 14 around the notch 12 is less likely to cause stress during lamination, so that the insulation layers 11a can be laminated well.
- connection conductor 14 may have a width that gradually decreases from the connection portion with the electrode 13 to the connection portion with the wiring conductor 15 as in the first embodiment. I do not care. In this case, it is preferable that the width of the slit 14a is gradually decreased from the connecting portion with the electrode 13 to the connecting portion with the wiring conductor 15.
- the insulating base 11 has an upper surface including a cavity 16 as in the example shown in FIG.
- Such cavities 16 are formed in a plurality of ceramic green sheets through holes that become the cavities 16 by laser processing or punching with a mold on the ceramic green sheets, and these ceramic green sheets are formed through holes. It can be formed by laminating the ceramic green sheets.
- the through hole for the cavity 16 be formed by laser processing or punching with a mold after laminating ceramic green sheets, because it can be processed with high accuracy.
- connection conductor 14 and the slit 14a are formed so as to extend to the bottom surface of the cavity 16, one connection conductor 14 having a large width is formed.
- the conductive paste for the connection conductor 14 is sandwiched between the ceramic green sheets in contact with the slits 14a, Since the stress applied to the conductor paste for the connecting conductor 14 is dispersed, the laminate between the insulating layers 11a at the corners of the bottom surface and the inner wall surface of the cavity 16 is made good, and the wiring board 1 having excellent airtightness is obtained.
- the bottom surface and the inner wall surface of the cavity 16 can be formed when the ceramic green sheets to be the insulating layer 11a are stacked and pressed, compared to the case where one wiring conductor 15 having a small width is formed.
- it can be an electrode 13 electrically connected to the favorable and the wiring conductor 15.
- the angle ⁇ formed between the inner surface of the cavity 16 and the bottom surface of the cavity 16 is an obtuse angle, and is preferably 110 ° to 145 °.
- 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 16 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 16 having the inner surface with such an 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 has high productivity because the angle ⁇ formed by the inner surface of the cavity 16 and the bottom surface of the cavity 16 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 16 and the bottom surface of the cavity 16 can be adjusted with higher accuracy.
- the wiring board 1 has an insulating base 11 having an upper surface including the cavity 16 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 16. It may be done.
- the reflective layer has, for example, a metal conductor layer provided on the inner wall surface of the cavity 16 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 electrode 13 and the wiring conductor 15.
- a silver plating layer is deposited on the outermost surface of the metal conductor layer, and a gold plating layer is applied on the outermost surfaces of the electrode 13, the external electrode 13a, and the wiring conductor 15. It is preferable to make it adhere.
- the gold plating layer has excellent bonding properties with 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 15 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 present invention is not limited to the above-described embodiments, and various modifications can be made.
- the notch 12, the electrode 13, and the external electrode 13a are each provided on two opposing sides of the insulating substrate 11, but the notch 12, the electrode 13, and the external electrode are shown.
- the wiring board 1 provided with 13a on all four sides of the insulating base 11 may be the wiring board 1 provided with a plurality of notches 12, electrodes 13 and external electrodes 13a on each side.
- the wiring board 1 may have a conductor other than the wiring such as the electronic component mounting layer 17 or the central terminal 18.
- these conductors can be manufactured by the same material and method as the above-mentioned electrode 13, external electrode 13a, and wiring conductor 15, and the exposed surface has a plating layer similar to that of the electrode 13 and wiring conductor 15. It is attached.
- the electronic component mounting layer 17 is used, for example, for mounting the electronic component 2, and the central terminal 18 is used for bonding to an external circuit board, for example, like the electrode 13.
- the electrode 13 extends to the lower surface side of the insulating base 11, but may extend to the upper surface side of the insulating base 11.
- the external electrode 13a is provided on the upper surface of the wiring board 1 and can be bonded to the external circuit board, a member having a higher thermal conductivity than the insulating substrate 11 is provided on the entire lower surface of the wiring board 1.
- the heat dissipation of the wiring board 1 can be improved by bonding.
- the material having higher thermal conductivity than the insulating base 11 include metal materials such as copper (Cu), copper-tungsten (Cu—W), and aluminum (Al).
- the insulating base 11 is made of an aluminum oxide sintered body, an insulating material made of an aluminum nitride sintered body can be used.
- the wiring board 1 has a through hole formed in the insulating base 11, and a metal member having better heat dissipation than the insulating base 11 on which the electronic component 2 is mounted is fitted into the through hole to form the insulating base 11. Even in the bonded wiring board 1, a wiring in which a metal member having better heat dissipation than the insulating base 11 is embedded in an area overlapping the area where the electronic component 2 is mounted when viewed from above.
- the substrate 1 may be used.
- one electronic component 2 is mounted on the wiring board 1, but it may be a wiring board 1 on which a plurality of electronic components 2 are mounted.
- the wiring board 1 may be manufactured in the form of a multi-piece wiring board.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Structure Of Printed Boards (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Led Device Packages (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に示すように、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5~図8を参照しつつ説明する。
Claims (6)
- 切欠き部を含む側面を有する絶縁基体と、
前記切欠き部の内面に設けられた電極と、
前記絶縁基体の内部または表面に設けられ、前記電極に接続導体を介して接続された配線導体とを備え、
前記切欠き部は、幅が深さよりも大きく、
前記接続導体は、前記切欠き部の幅方向の端部において前記電極に接続されていることを特徴とする配線基板。 - 前記接続導体は、前記配線導体よりも幅広であることを特徴とする請求項1に記載の配線基板。
- 前記電極は前記切欠き部の内面のうち端部に設けられており、前記接続導体は、前記電極の幅と同等の幅を有していることを特徴とする請求項1に記載の配線基板。
- 前記接続導体は、前記電極との接続部から前記配線導体との接続部にかけて、幅が漸次小さくなっていることを特徴とする請求項1に記載の配線基板。
- 前記接続導体は、前記配線導体側から前記切欠き部側に向かって形成されたスリットを有していることを特徴とする請求項1に記載の配線基板。
- 請求項1に記載された配線基板と、
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。
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CN201480037065.1A CN105359632B (zh) | 2013-10-23 | 2014-10-23 | 布线基板以及电子装置 |
EP14855585.7A EP3062590B1 (en) | 2013-10-23 | 2014-10-23 | Wiring board and electronic device |
JP2015543906A JP6140834B2 (ja) | 2013-10-23 | 2014-10-23 | 配線基板および電子装置 |
US14/902,353 US9704791B2 (en) | 2013-10-23 | 2014-10-23 | Wiring board and electronic device |
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JP2013-220260 | 2013-10-23 | ||
JP2013220260 | 2013-10-23 |
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PCT/JP2014/078226 WO2015060387A1 (ja) | 2013-10-23 | 2014-10-23 | 配線基板および電子装置 |
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US (1) | US9704791B2 (ja) |
EP (1) | EP3062590B1 (ja) |
JP (1) | JP6140834B2 (ja) |
CN (1) | CN105359632B (ja) |
WO (1) | WO2015060387A1 (ja) |
Cited By (2)
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CN109997220A (zh) * | 2016-11-28 | 2019-07-09 | 京瓷株式会社 | 布线基板、电子装置以及电子模块 |
US11641712B2 (en) | 2016-05-16 | 2023-05-02 | Murata Manufacturing Co., Ltd. | Ceramic electronic component |
Families Citing this family (5)
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JP6194104B2 (ja) * | 2014-04-22 | 2017-09-06 | 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 |
US11216869B2 (en) | 2014-09-23 | 2022-01-04 | Snap Inc. | User interface to augment an image using geolocation |
EP3633719A4 (en) * | 2017-05-26 | 2021-03-17 | Kyocera Corporation | SUBSTRATE FOR THE ASSEMBLY OF ELECTRONIC COMPONENTS, ELECTRONIC DEVICE AND ELECTRONIC MODULE |
WO2020137152A1 (ja) * | 2018-12-26 | 2020-07-02 | 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 |
EP4213197A1 (en) * | 2022-01-12 | 2023-07-19 | Nexperia B.V. | A semiconductor package substrate made from non-metallic material and a method of manufacturing thereof |
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- 2014-10-23 EP EP14855585.7A patent/EP3062590B1/en active Active
- 2014-10-23 US US14/902,353 patent/US9704791B2/en active Active
- 2014-10-23 CN CN201480037065.1A patent/CN105359632B/zh active Active
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EP3062590A1 (en) | 2016-08-31 |
US20160372407A1 (en) | 2016-12-22 |
CN105359632B (zh) | 2018-02-06 |
EP3062590A4 (en) | 2017-05-24 |
CN105359632A (zh) | 2016-02-24 |
EP3062590B1 (en) | 2021-01-27 |
US9704791B2 (en) | 2017-07-11 |
JPWO2015060387A1 (ja) | 2017-03-09 |
JP6140834B2 (ja) | 2017-05-31 |
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