Classifications

• • 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
  • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
  • H05K1/0203—Cooling of mounted components
  • H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the 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
  • H05K1/00—Printed circuits
  • H05K1/02—Details
  • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
  • H05K1/0203—Cooling of mounted components
  • H05K1/0207—Cooling of mounted components using internal conductor planes parallel to the surface for thermal conduction, e.g. power planes
• • 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
  • H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
  • H05K1/0298—Multilayer circuits
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K1/00—Printed circuits
  • H05K1/02—Details
  • H05K1/03—Use of materials for the substrate
  • H05K1/0306—Inorganic insulating substrates, e.g. ceramic, glass
• • 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
  • H10H20/858—Means for heat extraction or cooling
  • H10H20/8582—Means for heat extraction or cooling characterised by their shape
• • 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
  • H01L2924/0001—Technical content checked by a classifier
  • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• • 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
  • H05K2201/06—Thermal details
  • H05K2201/066—Heatsink mounted on the surface of the printed circuit board [PCB]
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10007—Types of components
  • H05K2201/10106—Light emitting diode [LED]
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10227—Other objects, e.g. metallic pieces
  • H05K2201/10416—Metallic blocks or heatsinks completely inserted in a PCB
• • 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
  • H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
  • H05K3/0061—Laminating printed circuit boards onto other substrates, e.g. metallic substrates onto a metallic substrate, e.g. a heat sink
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

• the invention relates to a component carrier with a
• Multi-layer carrier body having a substrate, a component carrier assembly and a method for producing such a multi-layer carrier body.
• high-power chip carriers such as those for high-performance chips
• HB-LED systems Light-emitting diode systems with high brightness, so-called high-brightness LED systems or HB-LED systems, are used, thermal management, luminous efficacy and lifetime play an increasingly important role.
• Light emitting diodes short LEDs, are used.
• the thermal performance of the LED carrier plays a decisive role in the overall system.
• High thermal conductivities of the support material greater than 100 W / mK are desired in HB LED applications.
• Other components for the protection of the circuit arrangement can also be on the carrier
• the device acting as a heat source is positioned as close as possible to the heat sink element on the carrier underside, which requires a thin design of the carrier of usually less than 500 ym.
• the heat source and the heat sink element is an electrical
• Isolation desired usually a
• the heat source or acting as a heat source device is positioned at the top of the carrier and the heat sink element is disposed on the underside of the carrier body, wherein a good heat dissipation from the heat source to the heat sink element is desired.
• the LEDs and protective components such as a TVS element (Transient Voltage Suppressor element or Suppressordiode) on a ceramic substrate, for example, comprising materials from the group AlOx, A1N, or a silicon substrate, the LED on the plane
• a TVS element Transient Voltage Suppressor element or Suppressordiode
• a ceramic substrate for example, comprising materials from the group AlOx, A1N, or a silicon substrate
• Carrier surface is placed. This is a so-called Level 1 system with LED and a carrier as well as a
• Level 1 system If this Level 1 system is mounted on another carrier, it is called a Level 2 system.
• the component carrier comprises a multi-layer carrier body comprising a substrate in which a structured
• the substrate extends both laterally and at least partially above and below the functional area and / or the substrate extends both laterally and completely above and / or below the functional area and / or the Substrate or another area is arranged in the functional area or protruding into it.
• the carrier body also has a substrate in addition to the substrate
• an integrated heat sink can be formed, by means of which the heat can be derived from the component.
• the functional area usually extends
• the housing can be vertically and / or horizontally extending in the substrate thermal heat sinks in the form of a thermally optimized block, and the use of a ceramic with high
• ultra-thin protective devices for example, only 0.1 mm thick or thinner, is possible.
• Such protective components can be protected against electrostatic discharges (for example by MLV elements / multilayeredarvars, ie
• Thermistor can be used.
• the multilayer or multilayer carrier body has a layered structure because it is made of a variety of films
• the three-dimensional structured functional area is created by the superimposed structural areas of the films.
• Vertical lateral surfaces of the functional area arise from stacked foils in which the contours, that is to say the edges, of the structural areas coincide.
• Curved outer surfaces of the functional area are created by films in which the
• Contours vary slightly from one layer to another so that they result in a layered layer of curvy mantle. Edges in the cladding can be achieved by significantly deviating the contour of a structure area from the underlying contour so that the structure area extending beyond the underlying contour forms the underside of an outstanding structure area that has an edge at the layer boundary. This edge thus runs parallel to the longitudinal or transverse direction or the plane spanned by it.
• Such a layered support body can be made by printing foils by applying a first paste in a first area and applying a second paste in a second area, stacking and laminating the foils to form an intimate one
• a film for a film stack is produced.
• a foil is a thin sheet formed from the printed areas of the dried first and second paste. It comprises the printed first and second area whose thickness corresponds to the film thickness.
• a third area can be printed with a third paste.
• the multi-layer carrier body is made of intimately bonded, stacked and printed
• the pastes comprise the material of the substrate or of the functional area.
• the functional area can be, for example, a region which extends through the substrate and which acts as a
• Through-hole or heat sink can serve.
• the functional area can be shaped such that flat structures, in particular structured layers, protrude from a basic body of the functional area parallel to the longitudinal and / or transverse axis into the substrate.
• the main body can be shaped such that flat structures, in particular structured layers, protrude from a basic body of the functional area parallel to the longitudinal and / or transverse axis into the substrate.
• protruding structured layers can be arranged in different planes one above the other or offset from each other. They serve for improved mechanical adaptation and reduce material stresses.
• the functional area or the further area can be a
• the functional area has material different from that of the substrate.
• the functional area may be metal or have metallic layers, for example
• the substrate is a ceramic comprising, for example, Al 2 O 3.
• the substrate may comprise Al 2 O 3 and glasses or LTCC ceramics.
• at the bottom of the substrate is a ceramic comprising, for example, Al 2 O 3.
• Multilayer carrier body mounted a heat sink element, by means of which the heat conducted through the substrate
• An insulating layer may be provided on the top and / or bottom of the multi-layer carrier body.
• An insulation layer can be between the
• Such multi-layer carrier bodies as described above can be provided in a component arrangement with a component carrier having a multi-layer carrier body comprising a substrate in which a structured functional area is arranged, which serves as an integrated heat sink, and a component which is arranged on the functional area.
• a component arrangement may have an insulation layer on the underside of the multi-layer carrier body, on which a heat sink is arranged.
• the functional area can have a cubic or cylindrical basic shape and its cross-sectional area at the top of the carrier body may correspond to or go beyond that of the component. This allows a good heat dissipation.
• the functional region may have structured layers which protrude into the substrate parallel to the longitudinal and / or transverse axis and the substrate extends above and / or below these structured layers.
• 1 and 2 are sectional views of a
• Figure 1 shows an embodiment of a
• Component carrier arrangement with a component carrier 10 with a component 1 arranged thereon, which serves as
• Heat source acts.
• the illustration is a section along the vertical axis 31 of the component carrier arrangement.
• Figure 2 shows a section along the line A-A 'through this
• Component carrier assembly runs in a plane parallel to the longitudinal and transverse axes 32, 33 plane spanned.
• the axes are shown in the axbox 31, 32, 33.
• the component carrier 10 comprises a multi-layer carrier body 15, which serves as a carrier both for separate components or
• the multi-layer carrier body 15 is made of stacked films
• a substrate 3 which has a carrier material, for example an Al 2 O 3 ceramic.
• a structured functional area 2 is provided in the substrate 3. This functional area 2 is an area with locally elevated
• thermal conductivity which serves as an integrated heat sink for heat dissipation.
• a conductor structure 4 is provided, by means of which the contacting of the component 1 and / or a rewiring can take place.
• a conductor structure 4 may include solder pads for contacting the device 1, tracks for voltage and power supply and for signal transmission.
• the interconnects may extend to terminals on the top or vias in the substrate 4.
• Conductor structure 4 may be metals, such as copper.
• a component 1 is fixed, which emits heat during operation.
• Component 1 may be an LED.
• an electrical insulation layer 5 is applied, consisting of
• the same material as the substrate 3 may be formed or of a different material.
• Layer thickness of the insulating layer 5 can be chosen so that a dielectric strength of 3000 V is achieved.
• the insulation layer 5 extends in this
• Carrier body 15 On the insulating layer 5 is a
• conducted heat of the device 1 is derived or radiated, for example, a heat sink or a
• the functional region 2 extends from the upper side of the multi-layer carrier body 15 to the insulating layer 5 in this exemplary embodiment.
• the structure 2 has a region adjacent to the component 1 and to the insulating layer 5
• Base surface of the device 1 protrudes.
• Section plane A-A protrude the side regions of the structure 2 to the edge of the multi-layer carrier body 15, so that a cross-shaped cross-section results, as can be seen in FIG. Above and below the protruding structural areas, the substrate 3 extends.
• the cross-axis structure of the functional area 2 not only allows the dissipation of heat perpendicular to the Component 1, but also a derivative of the heat in the horizontal direction, which through the cross-shaped
• Figure 3 shows a plan view of an embodiment of a multi-layer carrier body and a section (right) through this along the line A-A '.
• another cuboid structure 33 that is, another region, is made of another material, for example, another one
• This multi-layer carrier body 15 is constructed from three different types of film.
• the upper area I their areal arrangement corresponds to the supervision.
• the rectangular third area 33 is of the frame-shaped second and first
• the films In the underlying area II, the films have a second area 1 without an inner contour. The second area 2 is rectangular. In the lower area III, the films are printed over the whole area with the paste for the first Areal 3.
• Multilayer carrier body 15 in which the lateral surfaces of the structures in these areas are made up of the
• Foil layers run. Neighboring slides in which different areas lie on top of each other, forming the horizontal interfaces between the trough-shaped ones
• a cavity may be provided. This is made up of foils, which at the appropriate place a
• FIG. 5 shows a further exemplary embodiment of a
• Component carrier arrangement with a component carrier 10 with a component 1 arranged thereon, which serves as
• Heat source acts.
• the illustration is a section along the vertical axis of the component carrier arrangement.
• Figure 6 shows a section along the line A-A 'through this
• Component carrier assembly runs in a plane parallel to the plane spanned by the longitudinal and transverse axes.
• the exemplary embodiment of a component carrier arrangement shown in FIGS. 5 and 6 has, in addition to the component 1 arranged on the top side, for example an LED, yet another discrete component 7 which is arranged in a cavity 8 in the underside of the carrier body 15.
• a first functional area 2 extends below the component 1 arranged on the upper side and extends from the upper side of the carrier body 15 to the insulating layer 5. This serves as a heat sink
• Functional area 2 has a cylindrical basic shape with a cross section whose round basic shape has a serrated edge, as can be seen in FIG. From the vertical lateral surface protrude horizontally
• Mantels of the body has. You can alternatively be strip or web-shaped. Because of their shape, they can also be called an electrode structure. They improve the mechanical adaptation between metal and ceramic in the transition from the substrate to the functional area, by:
• an insulating layer 5 is provided between it and the heat sink. This runs below the device 1, but over its
• the component carrier assembly also has a second and third functional region 20 which is interposed between the
• Multilayer carrier body 15 and a heat sink element 6 extend on the underside. These functional areas are cylindrical with a rectangular cross section. They can serve as a via or heat sink for another, not shown, component.
• FIG. 7 shows a further exemplary embodiment of a component carrier arrangement with a component carrier 10 having a plurality of components 1 arranged thereon, which as Heat source act.
• the illustration is a section along the vertical axis of the component carrier arrangement.
• the spatial arrangement of the LEDs may be as shown in FIG.
• the component carrier arrangement has a plurality of components 1 arranged on the upper side. These can be LEDs that develop heat during operation. Below the components 1 arranged on the upper side. These can be LEDs that develop heat during operation. Below the components 1 arranged on the upper side. These can be LEDs that develop heat during operation. Below the components 1 arranged on the upper side. These can be LEDs that develop heat during operation. Below the components 1 arranged on the upper side. These can be LEDs that develop heat during operation. Below the
• the functional area 2 has a cylindrical base body extending from the top of the multi-layer carrier body 15 to the
• Insulation layer 5 extends. On the insulating layer 5, a common heat sink element 6 is provided. Furthermore, structured layers 23 are provided, which are
• the substrate 3 extends.
• a further, discrete component 7 is arranged on the upper side of the carrier body 15, which is, for example, a
• FIG. 8 shows a further exemplary embodiment of a component carrier arrangement comprising a component carrier 10 with a component 1 arranged thereon, which act as a heat source.
• the illustration is a section along the vertical axis of the component carrier arrangement.
• Figure 9 shows a section along the line AA 'through this
• Component carrier assembly The cut runs in one
• This embodiment is a
• FIG. 9 shows the spatial arrangement of the components 1. One is arranged centrally, others are arranged in a ring around this component 1.
• FIG. 8 differs from the previous one
• Embodiment essentially by the structure of the functional area 2. Also in this embodiment, an extended functional area 2 is provided as a heat sink for the components 1. In the middle area of the
• Carrier body 15 extends the structured
• Functional area 2 spacious, but is guided only below the components and heat sinks to the top or bottom. Thus, not only on the edge of
• Multilayer carrier body 15 substrate portions 3, but also on the carrier body top side between the components 1. Furthermore, separate heat sink elements 6 are provided under the components 1.
• the functional area also has substrate areas between at the bottom
• Heat sink elements 6 extending areas of the
• the extending in the upper and lower portions of the multi-layer carrier body areas of Functional area can be island-shaped, so you can
• Cross section substantially corresponds to the base of the components 1 or circular or annular, so that the components 1 are arranged on the circle or ring, as shown in Figure 9 outlines.
• FIG. 10 shows a section through another one
• Multilayer carrier body 15 is arranged.
• the component 1 is positioned under a lens 9.
• the width D1 of such an LED can be, for example, 1000 ym. It is by Lot, for example SnAgCu
• the width D7 of the further component 7 can be 300 ym
• solder pads 17 for example comprising Ag / Ni / Sn.
• Heat sink elements 6 arranged. Such a
• Multilayer carrier body 15 may have a thickness D10 of 500 ym, the substrate 3 having a thickness D15 of 400 ym.
• a first functional area 2 which serves as a thermal block or heat sink for the component 1, and two further functional areas 22 as
• the width D2 of the integrated heat sink is 1500 ym in both the longitudinal and transverse directions.
• the distance to the edge of the carrier body is 700 ym (see Figure 11).
• the width of the further functional areas corresponds to that of the further component 7.
• the width D2 of the main body of the integrated heat sink is 1500 ym in both the longitudinal and transverse directions.
• Carrier body is 700 ym (see Figure 9).
• the width of the other functional areas corresponds to that of the other
• Component 7 and is 300 ym.
• the multi-layer carrier body 15 has a layered structure and includes a plurality of films that have been stacked and laminated to form the carrier body 15.
• the individual foils comprise substrate areas whose design is the section through the support body in the corresponding
• Such films can be made by printing with different pastes for the different areas, which are then stacked and laminated. In this way it is possible to have any structures
• the regions 23 protruding from the main body of the functional region can be produced in a simple manner, in that the printed functional region of such a layer protrudes beyond that of the underlying layer and the layer above it.
• Main body outgoing structural areas of a
• FIG. 11 and FIG. 12 show two further sections through the component along the lines II and II-II in FIG. 10.
• FIG. 11 shows the section II, in which it can be clearly seen that the LED is contacted by means of two contacts.
• section 2-2 it can be seen that the same applies to the further component 7.

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• Engineering & Computer Science (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Inorganic Chemistry (AREA)
• Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
• Led Device Packages (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49759327

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (3)

Citations (7)

Family Cites Families (66)

• 2012
  • 2012-12-21 DE DE102012113014.0A patent/DE102012113014A1/de not_active Ceased
• 2013
  • 2013-12-12 EP EP13803026.7A patent/EP2936944B1/de not_active Not-in-force
  • 2013-12-12 WO PCT/EP2013/076426 patent/WO2014095587A1/de not_active Ceased
  • 2013-12-12 US US14/654,369 patent/US10021776B2/en active Active
  • 2013-12-12 JP JP2015548377A patent/JP6401710B2/ja not_active Expired - Fee Related
  • 2013-12-12 CN CN201380067199.3A patent/CN104854965B/zh not_active Expired - Fee Related
• 2018
  • 2018-05-14 JP JP2018093237A patent/JP2018139317A/ja active Pending

Patent Citations (7)

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