WO2018097313A1 - 配線基板、電子装置および電子モジュール - Google Patents

配線基板、電子装置および電子モジュール Download PDF

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Publication number
WO2018097313A1
WO2018097313A1 PCT/JP2017/042618 JP2017042618W WO2018097313A1 WO 2018097313 A1 WO2018097313 A1 WO 2018097313A1 JP 2017042618 W JP2017042618 W JP 2017042618W WO 2018097313 A1 WO2018097313 A1 WO 2018097313A1
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WIPO (PCT)
Prior art keywords
electrode
wiring board
insulating substrate
thickness
wiring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/042618
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English (en)
French (fr)
Japanese (ja)
Inventor
英久 海野
陽介 森山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
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Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to CN201780071696.9A priority Critical patent/CN109997220B/zh
Priority to EP17874717.6A priority patent/EP3547357A4/en
Priority to US16/463,915 priority patent/US11024572B2/en
Priority to JP2018553017A priority patent/JP6923554B2/ja
Publication of WO2018097313A1 publication Critical patent/WO2018097313A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05K3/40—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
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
    • H10W70/65—Shapes or dispositions of interconnections
    • 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
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals
    • H10N30/875—Further connection or lead arrangements, e.g. flexible wiring boards, terminal pins
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W40/00—Arrangements for thermal protection or thermal control
    • H10W40/10—Arrangements for heating
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
    • H10W70/68—Shapes or dispositions thereof
    • 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
    • H05K1/119—Details of rigid insulating substrates therefor, e.g. three-dimensional 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
    • H05K2201/09145—Edge details
    • H05K2201/09163—Slotted edge
    • 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
    • H05K2201/09181—Notches in 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
    • H05K2201/09145—Edge details
    • H05K2201/0919—Exposing inner circuit layers or metal planes at the side edge of the printed circuit board [PCB] or at the walls of large holes
    • 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
    • H05K2201/09218—Conductive traces
    • H05K2201/09272—Layout details of angles or corners
    • 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
    • H05K2201/09381—Shape of non-curved single flat metallic pad, land or exposed part thereof; Shape of electrode of leadless 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
    • H05K2201/09—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
    • H05K2201/09736—Varying thickness of a single conductor; Conductors in the same plane having different thicknesses
    • 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
    • H05K2201/098—Special shape of the cross-section of conductors, e.g. very thick plated 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2072—Anchoring, i.e. one structure gripping into another
    • 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
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H05K3/3431—Leadless components
    • H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
    • 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
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H05K3/3431—Leadless components
    • H05K3/3442—Leadless components having edge contacts, e.g. leadless chip capacitors, chip carriers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
    • H10W70/65—Shapes or dispositions of interconnections
    • H10W70/654—Top-view layouts
    • H10W70/655—Fan-out layouts
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W74/00—Encapsulations, e.g. protective coatings
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/721—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors
    • H10W90/724—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors between a chip and a stacked insulating package substrate, interposer or RDL
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
    • H10W90/754—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked insulating package substrate, interposer or RDL

Definitions

  • the present invention relates to a wiring board, an electronic device, and an electronic module.
  • a wiring board including an insulating substrate having a notch portion opened on a main surface and side surfaces, an inner surface electrode positioned on the inner surface of the notch portion, and an external electrode positioned on the main surface of the insulating substrate It has been known.
  • a bonding material such as solder
  • the inner surface electrode and the external electrode are bonded to the external circuit board via a bonding material such as solder (Japanese Patent Laid-Open No. 2002-158509). See the official gazette).
  • a wiring board includes an insulating substrate having a notch portion opened on a main surface and side surfaces, an inner surface electrode positioned on an inner surface of the notch portion, and an external electrode positioned on a main surface of the insulating substrate.
  • the internal electrode and the external electrode are connected, and the thickness of the connection portion is larger than the thickness of the internal electrode and the thickness of the external electrode.
  • the electronic device includes the wiring board having the above configuration and an electronic component mounted on the wiring board.
  • the electronic module of the present disclosure includes a module substrate having connection pads, and the electronic device having the above-described configuration connected to the connection pads via solder.
  • FIG. 2 is a longitudinal sectional view taken along line AA of the electronic device shown in FIG.
  • FIG. 2A is an enlarged bottom view of a main part in part A of FIG. 1B
  • FIG. 2B is an enlarged vertical sectional view of a main part in line AA in FIG. It is a side view in the A direction of Fig.1 (a).
  • (A)-(e) is sectional drawing which shows the 1st manufacturing method of the inner surface electrode in the wiring board of 1st Embodiment, an external electrode, a connection part, and a wiring conductor.
  • FIG. 8 is a longitudinal sectional view taken along line AA of the electronic device shown in FIG.
  • FIG. 8A is an enlarged bottom view of the main part in the A part of FIG. 7B
  • FIG. 9B is an enlarged vertical sectional view of the main part in the AA line of FIG. It is a side view in the A direction of Fig.7 (a).
  • FIG. 13 is a longitudinal sectional view taken along line AA of the electronic device shown in FIG.
  • FIG. 12A is an enlarged bottom view of the main part in the A part of FIG. 12B
  • FIG. 13B is an enlarged vertical sectional view of the main part in the AA line of FIG. It is a side view in the A direction of Fig.12 (a).
  • FIG. 18 is a longitudinal sectional view taken along line AA of the electronic device shown in FIG. (A) is a top view which shows the electronic device in 5th Embodiment, (b) is a bottom view of (a).
  • FIG. 20 is a longitudinal sectional view taken along line AA of the electronic device shown in FIG.
  • the electronic device includes a wiring board 1 and an electronic component 2 provided on the upper surface of the wiring board 1 as in the example shown in FIGS. As in the example shown in FIG. 6, the electronic device is connected to the connection pads 51 on the module substrate 5 constituting the electronic module, for example, using solder 6.
  • the wiring board 1 includes an insulating substrate 11 having a notch 12 that opens on the main surface and side surfaces, an inner surface electrode 13 positioned on the inner surface of the notch 12, and a main surface of the insulating substrate 11. And an external electrode 14 located on the surface.
  • a wiring conductor 16 is located on the surface and inside of the insulating substrate 11.
  • the wiring board 1 has a connection portion 15 to which an inner surface electrode 13 and an outer electrode 14 are connected.
  • the thickness of the connecting portion 15 is larger than the thickness of the inner surface electrode 13 and the thickness of the outer electrode 14.
  • the electronic device is mounted on an xy plane in a virtual xyz space. 1 to 6, the upward direction means the positive direction of the virtual z-axis.
  • the upper and lower distinction in the following description is for convenience, and does not limit the upper and lower when the wiring board 1 or the like is actually used.
  • a region where the side surface of the inner surface electrode 13 overlaps with the connection portion 15 in plan view is indicated by a broken line.
  • the insulating substrate 11 has one main surface (the lower surface in FIGS. 1 to 6), the other main surface (the upper surface in FIGS. 1 to 6), and a side surface.
  • the insulating substrate 11 is composed of a plurality of insulating layers 11a, and has a notch 12 that opens to the main surface and side surfaces.
  • the insulating substrate 11 functions as a support for supporting the electronic component 2.
  • the electronic component 2 is solder bump, gold bump, conductive resin (anisotropic conductive resin, etc.), resin, etc. It is bonded and fixed via the connecting member.
  • the insulating substrate 11 for example, 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 can be used.
  • the insulating substrate 111 is an aluminum oxide sintered body, for example, a raw material powder such as aluminum oxide (Al 2 O 3 ), silicon oxide (SiO 2 ), magnesium oxide (MgO), calcium oxide (CaO), etc.
  • a suitable organic binder, a solvent, etc. are added and mixed to prepare a slurry.
  • a ceramic green sheet is produced by forming this mud into a sheet using a conventionally known doctor blade method or calendar roll method.
  • the ceramic green sheet is subjected to an appropriate punching process, and a plurality of ceramic green sheets are laminated as necessary to form a generated shape, and the generated shape is fired at a high temperature (about 1600 ° C.).
  • An insulating substrate 11 composed of a plurality of insulating layers 11a is manufactured.
  • the insulating substrate 11 is formed of two insulating layers 11a.
  • the notch 12 is formed in the insulating layer 11a on one main surface side of the two insulating layers 11a of the insulating substrate 11.
  • the notch 12 is open on the main surface and side surface of the insulating substrate 11.
  • the notch 12 has an opening on one main surface and side surface of the insulating substrate 11, and has a columnar shape in which the corner is arc-shaped and rectangular in a plan view. It has a divided shape.
  • the notch 12 has an inner surface electrode 13 formed on the inner surface.
  • the notch 12 may have a semicircular shape, a semi-elliptical shape, or a semi-oval shape in plan view, or a shape obtained by dividing a column shape in which a plurality of sizes of notches overlap.
  • the notch 12 is provided to be opened on two opposing side surfaces of the insulating substrate 11, and the notch 12 is opposed to the notch 12.
  • the notch 12 for example, through holes to be the notch 12 are formed in each ceramic green sheet by laser processing, die cutting, or the like in some ceramic green sheets for the insulating substrate 11. Can be formed. As shown in the examples shown in FIGS. 1 to 4, the notch 12 opened on one main surface and side surface of the insulating substrate 11 includes the ceramic green sheet and other ceramic green sheets not formed with through holes. Can be formed by stacking.
  • An inner surface electrode 13, an outer electrode 14, a connecting portion 15, and a wiring conductor 16 are provided on the surface and inside of the insulating substrate 11.
  • the inner surface electrode 13 is located on the inner surface of the notch 12.
  • the external electrode 14 is located on one main surface of the insulating substrate 11.
  • the inner surface electrode 13 and the outer electrode 14 are connected by a connection portion 15 located at the opening of the notch portion 12.
  • the connecting portion 15 is positioned so as to cover the lower surface of the inner surface electrode 13 and the side surface end surface of the inner surface electrode 13.
  • the wiring conductor 16 is provided on the surface and inside of the insulating substrate 11, and is provided in the thickness direction (z direction in FIGS. 1 to 6) of the wiring layer provided on the surface of the insulating layer 11a and the insulating layer 11a.
  • one end of the wiring conductor 16 is led out to the other main surface of the insulating substrate 11, and the other end of the wiring conductor 16 is the inner surface at the bottom of the notch 12. It is connected to the electrode 13.
  • the inner surface electrode 13, the outer electrode 14, the connection portion 15, and the wiring conductor 16 are for electrically connecting the electronic component 2 and the module substrate 5.
  • the thickness T3 of the connecting portion 15 is larger than the thickness T1 of the inner surface electrode 13 and the thickness T2 of the outer electrode 14 (T3> T1, T3> T2).
  • the thickness T1 of the inner surface electrode 13 is the thickness from the inner surface of the notch 12 to the surface of the inner surface electrode 13.
  • the thickness T2 of the external electrode 14 is the thickness from the main surface of the insulating substrate 11 to the surface of the external electrode 14.
  • the thickness T3 of the connection portion 15 is the thickness from the inner surface of the notch portion 12 or the main surface of the insulating substrate 11 to the surface of the connection portion 15.
  • the thickness T3 of the connecting portion 15 is formed such that 1.1T1 ⁇ T3 ⁇ 3T1 and 1.1T2 ⁇ T3 ⁇ 3T2.
  • the inner surface electrode 13, the outer electrode 14, the connection portion 15, and the wiring conductor 16 are, for example, metal powders mainly composed of tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag), copper (Cu), or the like. It is metallization.
  • a metallized paste obtained by adding and mixing an appropriate organic binder and solvent to a refractory metal powder such as W, Mo or Mn is insulated.
  • a ceramic green sheet for the substrate 11 is preliminarily printed and applied in a predetermined pattern by a screen printing method or the like, and is fired at the same time as the ceramic green sheet for the insulating substrate 11 to be deposited at a predetermined position on the insulating substrate 11. .
  • the inner surface electrode 13 and the connection portion 15 are printed on the inner surface of the through hole for the notch portion 12 formed in the ceramic green sheet for the insulating substrate 11 by printing means such as a screen printing method. It is formed by coating and firing together with a ceramic green sheet for the insulating substrate 11.
  • the metallized paste for the wiring layer of the external electrode 14, the connecting portion 15, and the wiring conductor 16 is screen printed on the surface of the ceramic green sheet for the insulating substrate 11. It is formed by printing and coating by a printing means such as the above and firing together with a ceramic green sheet for the insulating substrate 11.
  • the through conductor for example, forms a through hole for the through conductor by a die or punching process by punching or laser processing on the ceramic green sheet for the insulating substrate 11,
  • the through hole is filled with a metallized paste for through conductors by the printing means, and is fired together with the ceramic green sheet for the insulating substrate 11.
  • the metallized paste is prepared by adjusting an appropriate viscosity by adding an appropriate solvent and binder to the above metal powder and kneading. In order to increase the bonding strength with the insulating substrate 11, glass powder or ceramic powder may be included.
  • the inner surface electrode 13, the outer electrode 14, the connection portion 15, and the surface exposed from the insulating substrate 11 of the wiring conductor 16 are coated with a metal plating layer by electroplating or electroless plating.
  • the metal plating layer is made of a metal having excellent corrosion resistance such as nickel, copper, gold, or silver and connectivity with the connection member 3.
  • the nickel plating layer has a thickness of about 0.5 to 5 ⁇ m and a gold of about 0.1 to 3 ⁇ m.
  • a plating layer is sequentially deposited.
  • the metal plating layer is not limited to the nickel plating layer / gold plating layer, and may be other metal plating layers including nickel plating layer / palladium plating layer / gold plating layer.
  • the electronic device 2 can be manufactured by mounting the electronic component 2 on the mounting portion 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 vibrator or a piezoelectric vibrator, and various sensors.
  • the semiconductor element is fixed on the mounting portion by a bonding member such as a low melting point brazing material or a conductive resin, and then connected to a bonding wire or the like.
  • the electrode of the semiconductor element and the wiring conductor 16 are electrically connected via the member 3 to be mounted on the wiring board 1.
  • the electronic component 2 is electrically connected to the wiring conductor 16.
  • the semiconductor element is a semiconductor via a connection member 3 such as a solder bump, a gold bump, or a conductive resin (anisotropic conductive resin, etc.).
  • the electrode of the element and the wiring conductor 16 are mounted on the wiring board 1 by being electrically and mechanically 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 lid made of resin, glass, ceramics, metal, or the like, using a sealing material 4 made of resin, glass, or the like, as necessary.
  • the external electrode 14 of the electronic device of the present embodiment is connected to the connection pad 51 of the module substrate 5 via the solder 6 to form an electronic module.
  • the external electrode 14 positioned on the upper surface side of the wiring substrate 1 is connected to the connection pad 51 of the module substrate 5.
  • the wiring substrate 1 includes an insulating substrate 11 having a notch 12 that opens on the main surface and side surfaces, an inner surface electrode 13 positioned on the inner surface of the notch 12, and a main surface of the insulating substrate 11.
  • the external electrode 14 is located on the inner electrode 13 and has the connection part 15 to which the inner surface electrode 13 and the outer electrode 14 are connected.
  • the thickness of the connection part 1 is equal to the thickness of the inner surface electrode 13 and the outer electrode 14. If the thickness is larger than the thickness, when the wiring substrate 1 and the module substrate 5 are joined together, the thickness of the connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 is increased, so that the plane of the wiring substrate 1 is increased.
  • the structure has a latching portion with the solder 6 in the direction orthogonal to the direction, and the connection reliability between the wiring substrate 1 and the module substrate 5 is improved, and heat is radiated at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14. It can be made easier.
  • the connection reliability between the wiring board 1 and the module substrate 5 is improved, and heat is easily radiated at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14, and the luminance is excellent.
  • the wiring board 1 for a light emitting device can be obtained.
  • connection board 15 and the module board 5 are connected.
  • the connection reliability can be improved satisfactorily and heat can be easily radiated well at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14.
  • This configuration can also be applied to the wiring board 1 in the second to fifth embodiments described later.
  • connection portion 15 is located along the opening on the main surface side of the notch portion 12, and solder in a direction perpendicular to the plane direction of the wiring board 1 is used.
  • 6 has a configuration in which a locking portion with the notch 12 is provided along the opening of the notch 12, and the connection reliability between the wiring board 1 and the module substrate 5 is improved more favorably.
  • the connecting portion 15 at the boundary between the external electrode 14 and the external electrode 14 it is possible to facilitate better heat dissipation. This configuration can also be applied to the wiring board 1 in the second to fifth embodiments described later.
  • the connecting portion 15 has a length equivalent to the width of the inner surface electrode 13 in the direction along the inner surface of the notch portion 12, the solder 6 with respect to the direction orthogonal to the plane direction of the wiring board 1 is provided. And the connection reliability between the wiring board 1 and the module substrate 5 is improved more favorably, and the inner electrode 13 and the outer electrode 14 are connected over the entire width of the inner electrode 13. It is possible to better radiate heat better at the boundary connection portion 15. This configuration can also be applied to the wiring board 1 in the second to fifth embodiments described later.
  • connection portion 15 has a large thickness in the direction along the main surface of the insulating substrate 11, and the solder 6 with respect to the direction orthogonal to the plane direction of the wiring substrate 1. Therefore, it is possible to improve the connection reliability more favorably and to facilitate better heat dissipation at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14.
  • This configuration can also be applied to the wiring board 1 in the second to fifth embodiments described later.
  • connection portion 15 is thick in the direction along the main surface of the insulating substrate 11, and the side surface exposed to the notch portion 12 has a convex curved surface shape.
  • solder 6 is spread and spread easily over the entire connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14, and has a locking portion with the solder 6 in the direction perpendicular to the plane direction of the wiring board 1. It becomes a structure, can improve connection reliability more favorably, and can make it easier to radiate heat better in the connection part 15 at the boundary between the inner surface electrode 13 and the outer electrode 14. This configuration can also be applied to the wiring board 1 in the second to fifth embodiments described later.
  • connection portion 15 is thick in the direction along the main surface of the insulating substrate 11, and the side surface exposed to the notch portion 12 has a convex curved shape along the opening on the main surface side in the notch portion 12. In addition, it is possible to easily spread and adhere the entire connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 along the opening of the notch portion 12.
  • the wiring board 1 in the first embodiment can be manufactured, for example, by the following manufacturing method.
  • the through holes 112 for the wiring conductors 16 are formed in the ceramic green sheet 111 to be the insulating substrate 11.
  • a through hole 212 for the notch 12 is formed on the surface of the ceramic green sheet 211 to be the insulating substrate 11.
  • the conductor paste 116 for the wiring conductor 16 is filled into the through hole 112 for the wiring conductor 16 of the ceramic green sheet 111 to be the insulating substrate 11.
  • the conductor paste 113 for the inner surface electrode 13 is applied and printed on the inner surface of the through hole 212 to be the cutout portion 12 of the ceramic green sheet 211 by a screen printing method.
  • the conductor paste 116 for the wiring conductor 16 is printed and applied to the surface of the ceramic green sheet 111 that becomes the insulating substrate 11. Also, a conductor paste 114 for the external electrode 14 and a conductor paste 116 for the wiring conductor 16 are printed on the surface of the ceramic green sheet 211 to be the insulating substrate 11, and each conductor paste and the conductor paste 113 for the inner surface electrode 13 are applied. And connect. At this time, the inner surface of the through hole 212 that becomes the cutout portion 12 of the conductor paste 114 for the outer electrode 14 is arranged so that the end portion of the conductor paste 114 for the outer electrode 14 overlaps the surface of the conductor paste 113 for the inner surface electrode 13.
  • the conductor for the inner surface electrode 13 is connected at the connection portion between the conductor paste 113 for the inner surface electrode 13 and the conductor paste 114 for the outer electrode 14.
  • a ceramic raw laminate to be the insulating substrate 11 having a thick paste 113 and firing the ceramic raw laminate, the thickness of the connecting portion 15 is changed to the inner surface as in the example shown in FIG.
  • An insulating substrate 11 having a recess 312 larger than the thickness of the electrode 13 and the thickness of the external electrode 14 is formed. Further, as shown in the example shown in FIG.
  • the thickness of the connecting portion 15 between the inner surface electrode 13 and the outer electrode 14 can be reduced by dividing the recess 312 so that it is located on the inner surface of the notch portion 12.
  • the wiring board 1 having a thickness larger than that of the inner surface electrode 13 and the outer electrode 14 can be manufactured.
  • the electronic device having the long-term reliability can be obtained by including the wiring board having the above-described configuration and the electronic component mounted on the wiring board.
  • the electronic module of the present disclosure it has excellent long-term reliability by including the module substrate having the connection pad and the electronic device having the above-described configuration connected to the connection pad via solder. can do.
  • the wiring board 1 in the present embodiment can be suitably used in a small electronic device.
  • the electronic component 2 is a light emitting element, it can be suitably used as the wiring board 1 for a high-luminance light emitting device.
  • the electronic device according to the second embodiment is different from the electronic device according to the first embodiment described above in that the connecting portion 15 has a thickness in the thickness direction of the insulating substrate 11 (z direction in FIGS. 7 to 11). It is a point that is getting bigger.
  • the notch part 12 in 2nd Embodiment is the shape which divided
  • a region where the side surface of the inner surface electrode 13 overlaps with the connecting portion 15 in plan view is indicated by a broken line.
  • the insulating substrate 11 of the wiring board 1 of the second embodiment is formed of two insulating layers 11a.
  • the notch 12 is formed in the insulating layer 11a on the one main surface (lower surface in FIGS. 7 to 11) side of the two insulating layers 11a of the insulating substrate 11.
  • the thickness T3 of the connecting portion 15 of the wiring board 1 of the second embodiment is larger than the thickness T1 of the inner surface electrode 13 and the thickness T2 of the outer electrode 14 in the same manner as the wiring board 1 of the first embodiment ( T3> T1, T3> T2).
  • the thickness T3 of the connecting portion 15 is formed such that 1.1T1 ⁇ T3 ⁇ 3T1 and 1.1T2 ⁇ T3 ⁇ 3T2.
  • connection portion 15 has a large thickness in the thickness direction of the insulating substrate 11, and a locking portion with the solder 6 in a direction orthogonal to the thickness direction of the wiring substrate 1 is provided. Therefore, it is possible to improve the connection reliability between the wiring substrate 1 and the module substrate 5 more favorably and to facilitate better heat dissipation at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14.
  • the space between the wiring board 1 and the module board 5 is increased, and a large amount of solder 6 is provided to improve the connection reliability between the wiring board 1 and the module board 5, and the inner electrode 13 and the outer electrode 14 It is possible to facilitate better heat dissipation at the connection portion 15 at the boundary.
  • the connecting portion 15 having a large thickness is positioned so as to be opposed to two opposite sides of the insulating substrate 11.
  • the inclination when the wiring board 1 and the module board 5 are joined is reduced.
  • the wiring board 1 for a light emitting device having excellent visibility and brightness can be obtained. it can.
  • This configuration can also be applied to the wiring board 1 in the third to fifth embodiments described later.
  • connection portion 15 is thick in the thickness direction of the insulating substrate 11, and the inner surface electrode 13 and the outside are formed when the lower surface of the connection portion 15 has a convex curved surface shape.
  • Solder 6 is wetted and spreads easily over the entire connecting portion 15 at the boundary with the electrode 14, and has a structure having a locking portion with the solder 6 in a direction perpendicular to the thickness direction of the wiring board 1, so that the connection is made better. Reliability can be improved and heat can be easily radiated better at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14. This configuration can also be applied to the wiring board 1 in the third to fifth embodiments described later.
  • connection portion 15 is thicker in the direction along the main surface of the insulating substrate 11, and the lower surface of the connection portion 15 has a notched shape that is convex along the opening on the main surface side of the notch portion 12.
  • the entire connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 can be wetted and spread along the opening of the portion 12 to facilitate adhesion.
  • the wiring board 1 in the second embodiment can be manufactured by the following manufacturing method, for example.
  • the through hole 112 for the wiring conductor 16 is formed in the ceramic green sheet 111 to be the insulating substrate 11.
  • a through hole 212 for the notch 12 is formed on the surface of the ceramic green sheet 211 to be the insulating substrate 11.
  • the through hole 111 for the wiring conductor 16 of the ceramic green sheet 111 to be the insulating substrate 11 is filled with the conductor paste 116 for the wiring conductor 16.
  • the conductor paste 113 for the inner surface electrode 13 is applied and printed on the inner surface of the through hole 212 to be the cutout portion 12 of the ceramic green sheet 211 by a screen printing method.
  • the end portion of the conductor paste for the inner surface electrode 13 is printed and applied so as to extend to the surface of the ceramic green sheet 211.
  • the conductor paste 116 for the wiring conductor 16 is printed and applied on the surface of the ceramic green sheet 111 to be the insulating substrate 11.
  • a conductor paste 114 for the external electrode 14 and a conductor paste 116 for the wiring conductor 16 are printed on the surface of the ceramic green sheet 211 to be the insulating substrate 11, and each conductor paste and the conductor paste 113 for the inner surface electrode 13 are applied. And connect.
  • An insulating substrate 11 having a recess 312 larger than the thickness of the electrode 13 and the thickness of the external electrode 14 is formed. Furthermore, as shown in the example shown in FIG. 11E, by dividing the recess 312, the thickness of the connection portion 15 between the inner surface electrode 13 and the outer electrode 14 is increased.
  • the wiring board 1 having a thickness larger than that of the inner surface electrode 13 and the outer electrode 14 can be manufactured.
  • the wiring board 1 of the second embodiment can be manufactured using the same manufacturing method as the wiring board 1 of the first embodiment described above.
  • the electronic device according to the third embodiment is different from the electronic device according to the above-described embodiment in that the connection portion 15 has a direction along the main surface of the insulating substrate 11 (the xy plane direction in FIGS. 12 to 16) and insulation.
  • the thickness is increased in the thickness direction of the substrate 11 (z direction in FIGS. 12 to 16).
  • a region where the side surface of the inner surface electrode 13 overlaps with the connecting portion 15 in plan view is indicated by a broken line.
  • the insulating substrate 11 of the wiring substrate 1 of the third embodiment is formed of two insulating layers 11a in the examples shown in FIGS.
  • the notch 12 is formed in the insulating layer 11a on the one main surface (lower surface in FIGS. 12 to 16) side of the two insulating layers 11a of the insulating substrate 11.
  • the thickness T3 of the connecting portion 15 of the wiring board 1 of the third embodiment is larger than the thickness T1 of the inner surface electrode 13 and the thickness T2 of the outer electrode 14 as in the case of the wiring board 1 of the above-described embodiment (T3). > T1, T3> T2).
  • the thickness T3 of the connecting portion 15 is formed such that 1.1T1 ⁇ T3 ⁇ 3T1 and 1.1T2 ⁇ T3 ⁇ 3T2.
  • the connecting portion 15 has a large thickness in the direction along the main surface of the insulating substrate 11 and in the thickness direction of the insulating substrate 11. It becomes a structure which has the latching
  • the connecting portion 15 increases from the direction along the main surface of the insulating substrate 11 to the thickness direction of the insulating substrate 11, solder in the direction perpendicular to the plane direction of the wiring substrate 1 from the thickness direction is used. 6, the connection reliability between the wiring substrate 1 and the module substrate 5 is more effectively improved, and the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 is improved more effectively. It is possible to facilitate heat dissipation.
  • connection portion 15 becomes thicker in the direction along the main surface of the insulating substrate 11 and in the thickness direction of the insulating substrate 11, and the cutout portion of the connection portion 15 is formed.
  • the solder 6 is wetted and spread easily over the entire connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14, and the wiring substrate 1 in the plane direction and It has a structure that has a latching part with the solder 6 in both directions orthogonal to the thickness direction, improves the connection reliability better, and radiates heat better at the connection part 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 It can be made easier.
  • This configuration can also be applied to the wiring board 1 in the third to fifth embodiments described later.
  • connection portion 15 is thicker in the direction along the main surface of the insulating substrate 11 and in the thickness direction of the insulating substrate 11, and the side surface and the lower surface exposed at the cutout portion 12 of the connection portion 15 are the main portions of the cutout portion 12.
  • the entire connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 can be wetted and spread easily along the opening of the notch portion 12. .
  • the wiring board 1 in the third embodiment can be manufactured by the following manufacturing method, for example.
  • the through hole 112 for the wiring conductor 16 is formed in the ceramic green sheet 111 to be the insulating substrate 11, as in the example shown in FIG.
  • a through hole 212 for the notch 12 is formed on the surface of the ceramic green sheet 211 to be the insulating substrate 11.
  • the conductor paste 116 for the wiring conductor 16 is filled into the through hole 111 for the wiring conductor 16 of the ceramic green sheet 111 to be the insulating substrate 11.
  • the conductor paste 113 for the inner surface electrode 13 is applied and printed on the inner surface of the through hole 212 to be the cutout portion 12 of the ceramic green sheet 211 by a screen printing method.
  • the end of the conductor paste 113 for the inner surface electrode 13 is printed and applied so as to extend to the surface of the ceramic green sheet 211.
  • the conductor paste 116 for the wiring conductor 16 is printed and applied to the surface of the ceramic green sheet 111 to be the insulating substrate 11.
  • a conductor paste 114 for the external electrode 14 and a conductor paste 116 for the wiring conductor 16 are printed on the surface of the ceramic green sheet 211 to be the insulating substrate 11, and each conductor paste and the conductor paste 113 for the inner surface electrode 13 are applied. And connect.
  • the conductive paste 114 for the external electrode 14 is applied to the inner surface of the through-hole 212 serving as the cutout portion 12 by applying the conductive paste 114 for the external electrode 14 to the surface side of the ceramic green sheet 211. And the inner surface of the through-hole 212 for the notch 12, the conductor paste for the inner surface electrode 13 and the conductor paste for the outer electrode 14 are overlapped. Then, by laminating and pressing the ceramic green sheet 111 and the ceramic green sheet 211, the conductor for the inner surface electrode 13 is connected at the connection portion between the conductor paste 113 for the inner surface electrode 13 and the conductor paste 114 for the wiring conductor 16. As shown in FIG.
  • the insulating substrate 11 having the recess 312 in which the thickness of the connecting portion 15 is larger than the thickness of the inner surface electrode 13 and the thickness of the external electrode 14 is formed. Further, as shown in the example shown in FIG. 16 (e), the recess 312 is divided so that the thickness of the connecting portion 15 between the inner surface electrode 13 and the outer electrode 14 is located on the inner surface of the notch portion 12.
  • the wiring board 1 having a thickness larger than that of the inner surface electrode 13 and the outer electrode 14 can be manufactured.
  • the wiring board 1 of the third embodiment can be manufactured by using the same manufacturing method as the wiring board 1 of the above-described embodiment.
  • the electronic device according to the fourth embodiment is different from the electronic device according to the above-described embodiment in that the notch portions 12 are opened on both main surfaces and side surfaces of the insulating substrate 11.
  • the insulating substrate 11 has a recess 17 on the other main surface (the upper surface in FIGS. 17 and 18).
  • a region where the side surface of the inner surface electrode 13 overlaps with the connection portion 15 in a plan view is indicated by a broken line.
  • the thickness T3 of the connecting portion 15 of the wiring board 1 of the fourth embodiment is larger than the thickness T1 of the inner surface electrode 13 and the thickness T2 of the outer electrode 14 as in the case of the wiring board 1 of the above-described embodiment (T3). > T1, T3> T2).
  • the thickness T3 of the connecting portion 15 is formed such that 1.1T1 ⁇ T3 ⁇ 3T1 and 1.1T2 ⁇ T3 ⁇ 3T2.
  • the wiring board 1 in the fourth embodiment is similar to the wiring board 1 in the third embodiment in that the boundary between the inner surface electrode 13 and the outer electrode 14 when the wiring board 1 and the module substrate 5 are joined.
  • the connection portion 15 has an engaging portion with the solder 6 in both directions orthogonal to the planar direction and the thickness direction of the wiring substrate 1, and the connection reliability between the wiring substrate 1 and the module substrate 5 is obtained. Therefore, it is possible to improve the performance more effectively and to easily radiate heat at the connecting portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14.
  • the connecting portion 15 increases in thickness from the direction along the main surface of the insulating substrate 11 to the thickness direction of the insulating substrate 11, and the solder 6 in the direction orthogonal to the planar direction from the wiring substrate 1 to the thickness direction. And the connection reliability between the wiring substrate 1 and the module substrate 5 is more effectively improved, and the heat radiation at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 is improved. Can be easier.
  • the recess 17 is for mounting the electronic component 2 on the bottom surface, for example.
  • a wiring conductor 16 for electrical connection with the electronic component 2 is led out to the bottom surface of the recess 17.
  • the recess 17 has a rectangular shape with a corner having an arc shape in plan view, and is located in the center of the insulating substrate 11.
  • the insulating substrate 11 is formed of three insulating layers 11a, and the recesses 17 are located in the first to second insulating layers 11a on the one main surface side. .
  • the recesses 17 are formed, for example, by forming through holes to be the recesses 17 in each ceramic green sheet by laser processing, punching with a mold, or the like in some ceramic green sheets for the insulating substrate 11. It can be formed by laminating on another ceramic green sheet in which no through hole is formed.
  • the wiring board 1 of the fourth embodiment can be manufactured using the same manufacturing method as the wiring board 1 of the above-described embodiment.
  • the electronic device according to the fifth embodiment differs from the electronic device according to the first embodiment described above in that an external electrode 14 and a wiring conductor are formed inside the insulating substrate 11 along the thickness direction of the insulating substrate 11. This is a point having a via 18 connecting 16.
  • a region where the side surface of the inner surface electrode 13 overlaps with the connection portion 15 in a plan view is indicated by a broken line.
  • a region where the side surface of the via 18 overlaps the external electrode 14 in a plan view is indicated by a broken line.
  • the thickness T3 of the connection portion 15 of the wiring board 1 of the fifth embodiment is larger than the thickness T1 of the inner surface electrode 13 and the thickness T2 of the outer electrode 14 as in the case of the wiring board 1 of the above-described embodiment (T3). > T1, T3> T2).
  • the thickness T3 of the connecting portion 15 is formed such that 1.1T1 ⁇ T3 ⁇ 3T1 and 1.1T2 ⁇ T3 ⁇ 3T2.
  • the wiring board 1 in the fifth embodiment is similar to the wiring board 1 in the third embodiment when the wiring board 1 and the module substrate 5 are joined together.
  • the connecting portion 15 increases in thickness from the direction along the main surface of the insulating substrate 11 to the thickness direction of the insulating substrate 11, and the solder 6 in the direction orthogonal to the planar direction from the wiring substrate 1 to the thickness direction. And the connection reliability between the wiring substrate 1 and the module substrate 5 is more effectively improved, and the heat radiation at the connection portion 15 at the boundary between the inner surface electrode 13 and the outer electrode 14 is improved. Can be easier.
  • the wiring board 1 has one via electrode 18 connected to one external electrode 14, and a plurality of vias 18 connected to one external electrode 14. It doesn't matter.
  • the via 18 can be manufactured by the same manufacturing method as the through conductor of the wiring conductor 16.
  • the wiring board 1 of the fifth embodiment can be manufactured using the same manufacturing method as the wiring board 1 of the above-described embodiment.
  • the insulating substrate 11 may have a rectangular shape having a notch or a chamfered portion on a side surface or a corner when viewed in a plan view.
  • the external electrode 14 is formed on the lower surface side of the insulating substrate 11, but the upper surface side of the insulating substrate 11, that is, the same main surface side as the mounting portion of the electronic component 2 is used. In this case, an external electrode 14 may be provided.
  • the configuration of the wiring board 1 of the first to fifth embodiments may be combined.
  • the wiring board 1 of the first embodiment or the wiring boards 1 of the third to fifth embodiments may have a recess 17.
  • the wiring board 1 of the first to fourth embodiments may be provided with the via 18.
  • the notch 12, the inner surface electrode 13, the external electrode 14, and the connection portion 15 are located on two opposite sides of the insulating substrate 11.
  • the insulating substrate 11 has a rectangular shape. In this case, the four sides of the insulating substrate 11 may be located on each other.
  • the surface of the external electrode 14 is formed on the surface of the external electrode 14 to have the same size ( ⁇ T3) as the surrounding region. A region that is partially thick may be provided. Thereby, the inclination at the time of joining the wiring board 1 and the module substrate 5 is further reduced, and when the light emitting element is used as the electronic component 2, the wiring board 1 for a light emitting device having excellent visibility and brightness is obtained. Can do.
  • the surface of the external electrode 14 that overlaps the via 18 in plan view may be thicker than the surrounding external electrode 14.
  • the insulating substrate 11 is constituted by two or three insulating layers 11a is shown, but the insulating substrate 11 may be constituted by four or more insulating layers 11a. I do not care.
  • 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)
  • Manufacturing & Machinery (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
  • Structure Of Printed Boards (AREA)
  • Combinations Of Printed Boards (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
PCT/JP2017/042618 2015-11-28 2017-11-28 配線基板、電子装置および電子モジュール Ceased WO2018097313A1 (ja)

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CN201780071696.9A CN109997220B (zh) 2016-11-28 2017-11-28 布线基板、电子装置以及电子模块
EP17874717.6A EP3547357A4 (en) 2016-11-28 2017-11-28 WIRING BOARD, ELECTRONIC DEVICE, AND ELECTRONIC MODULE
US16/463,915 US11024572B2 (en) 2015-11-28 2017-11-28 Wiring board, electronic device, and electronic module
JP2018553017A JP6923554B2 (ja) 2016-11-28 2017-11-28 配線基板、電子装置および電子モジュール

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