WO2021068657A1 - 封装结构和电子装置 - Google Patents

封装结构和电子装置 Download PDF

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Publication number
WO2021068657A1
WO2021068657A1 PCT/CN2020/110960 CN2020110960W WO2021068657A1 WO 2021068657 A1 WO2021068657 A1 WO 2021068657A1 CN 2020110960 W CN2020110960 W CN 2020110960W WO 2021068657 A1 WO2021068657 A1 WO 2021068657A1
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Prior art keywords
substrate
heat dissipation
layer
packaging
package
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PCT/CN2020/110960
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English (en)
French (fr)
Inventor
窦志敏
陈丘
叶润清
佘勇
马富强
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US17/767,510 priority Critical patent/US20230178442A1/en
Priority to EP20875173.5A priority patent/EP4030475A4/en
Publication of WO2021068657A1 publication Critical patent/WO2021068657A1/zh

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Definitions

  • This application relates to the field of packaging technology, and in particular to a packaging structure and an electronic device including the packaging structure.
  • 3D packaging and stacking technology has become one of the very important effective means to increase circuit density.
  • 3D packaging and stacking technology more and more passive devices, active devices and other components are integrated, making the heat dissipation of the components in the 3D packaging stack structure an increasingly prominent and urgent problem to be solved to avoid 3D packaging
  • the heat concentration of the components in the stacked structure affects the normal operation of the components in the package structure or damages the components in the package structure.
  • the present application provides a package structure with good heat dissipation effect, and an electronic device including the package structure.
  • the present application provides a package structure including a first package body and a second package body stacked on the first package body.
  • the first packaging body includes a first substrate and a first packaging layer packaged on the first substrate; a plurality of external pins are formed on the side of the first substrate away from the first packaging layer, and the external The pins are used to connect the external structure of the packaging structure;
  • the first packaging layer includes a first packaging material layer and one or more first components and multiple second components embedded in the first packaging material layer A connecting column; each of the first components is electrically connected to the first substrate; one end of each of the first connecting columns is connected to the first substrate, and the other end extends to the first packaging material layer away from The surface of the first substrate; the first connecting pillar is formed of a thermally conductive material.
  • the second packaging body includes a second substrate and a second packaging layer packaged on the second substrate; the second packaging layer includes a second packaging material layer and one of the second packaging material layers embedded in the second packaging material layer, or A plurality of second components, a plurality of second connecting posts, and one or more second heat dissipation blocks; each of the second components is connected to the second substrate; one end of each of the second connecting posts is connected The other end of the second substrate extends to the surface of the second packaging material layer facing away from the second substrate; each of the second heat dissipation blocks is connected to at least one of the second connecting posts, and each of the The second heat sink is connected to one or more of the second components; the second connecting pillars and the second heat sink are formed of a thermally conductive material; the second substrate or the second connecting pillar is connected to the first One connecting column.
  • each of the second components is connected to the second substrate, the heat of the second components can be directly transferred to the second substrate.
  • each of the second heat dissipation blocks is connected to at least one of the second connecting posts, and each of the second heat dissipation blocks is connected to one of the second components. That is, at least part of the second components can be connected to the second connecting post through the second heat dissipation block.
  • the heat generated by the second component can pass through in sequence
  • the second heat dissipation block and the second connecting pillar are transmitted to the second substrate, or sequentially transmitted to the first heat dissipation block, the second connecting pillar, and the first connecting pillar.
  • the heat transfer path of the second component is increased, and the heat dissipation of the second component is accelerated.
  • a plurality of external pins are formed on the first substrate, and the external pins of the package structure are connected through the external pins, so that the heat transferred to the first substrate can be transferred to the external pins via the external pins.
  • the external structure of the package structure to realize the heat dissipation of the package structure due to the increase in the number of channels for the second component, the heat of the second component in the package structure can be quickly transferred to the first substrate, thereby accelerating the heat dissipation efficiency of the package structure.
  • the heat of the second component can only be transferred to the first substrate through the second substrate, the second connecting column, and the first connecting column in sequence.
  • the heat of the second component of the present application The transmission path to the first substrate is greatly increased, which can accelerate the dissipation of heat in the packaging structure.
  • the heat in the packaging structure can pass through the second heat dissipation block and the first connection pillar.
  • the connecting post and the second connecting post are transmitted, so that heat can be quickly exchanged between the first package body and the second package body, avoiding heat in the first package body or the second package body Accumulation, so as to avoid damage to the components in the package structure caused by heat accumulation.
  • the heat in the packaging structure can also be transferred out through one side of the second substrate.
  • the heat of the second component can be transferred to the second substrate in many ways, it can be directly transferred to the second substrate, or can pass through the second heat dissipation block and the second substrate in sequence.
  • the second connecting pillar is transmitted to the second substrate, so that the heat in the packaging structure can be transferred to the outside of the packaging structure more quickly, and the heat dissipation efficiency of the packaging structure is accelerated, so that the packaging structure can have a good heat dissipation effect, thereby It can avoid that the heat in the three-dimensional package stack structure is too high to affect the normal operation of the components in the package structure or cause damage to the components in the package structure.
  • the first package body includes one or more first heat dissipation blocks, each of the first heat dissipation blocks is connected to at least one of the first connecting posts, and each of the first heat dissipation blocks is connected to One or more of the first components are connected; the first heat dissipation block is formed of a thermally conductive material. Since the first component is connected to the first substrate, the heat of the first component can be directly transferred to the first substrate and transmitted out through the first substrate.
  • the first component and the first connecting post are connected through the first heat sink, and the first connecting post is connected to the first substrate, so that the heat of the first component can still be It is transferred to the first connecting column through the first heat sink, and then transferred to the first substrate through the first connecting column, and then transferred out through the first substrate. That is, in this embodiment, there are many heat conduction paths for the first components in the first packaging layer, which can quickly transfer the heat generated by the operation of the first components, and further improve the heat dissipation efficiency of the packaging structure. In addition, due to the increase in the heat conduction path in the package structure, the heat between the first package body and the second package body can also be quickly transferred, avoiding the concentration of heat at a certain position in the package structure, thereby Avoid damage to components caused by heat concentration.
  • each of the first heat dissipation blocks is located on a side of the first component away from the first substrate, and each of the first connecting posts is close to the first component relative to the first component.
  • the edge of a package body; or each of the second heat dissipation blocks is located on the side of the second component away from the second substrate, and the second connecting post is closer to the second component relative to the second component The edge of the package body.
  • each of the first heat dissipation blocks is located on a side of the first component away from the first substrate, and each of the first connecting posts is close to the first component relative to the first component.
  • each of the second heat dissipation blocks is located on the side of the second component away from the second substrate, and the second connecting column is close to the first component relative to the second component 2.
  • the first connecting post is close to the edge of the first package body relative to the first component, and the first heat dissipation block is connected to the first connecting post to form a cover on the first component.
  • a frame structure on the side of a component away from the first substrate, the frame structure can enhance the internal strength of the package structure and avoid damage to the package structure caused by external forces.
  • the frame structure When the first connection post or the second connection post is grounded, the frame structure can form a Faraday electromagnetic shield, which can well isolate the electromagnetic interference between the first component in the package structure and other structures in the package structure , And the electromagnetic interference of the external environment of the package structure to the first component in the package structure.
  • the second connecting column is close to the edge of the second package with respect to the second component, and the second heat sink is connected to the second connecting column to form a cover that is arranged on the second component away from the
  • the frame structure on one side of the second substrate can enhance the internal strength of the packaging structure and prevent the packaging structure from being damaged by external forces.
  • the frame structure forms a Faraday electromagnetic shielding body
  • the electromagnetic interference between the second component in the package structure and other structures in the package structure can be well isolated , And the electromagnetic interference of the external environment of the package structure to the second component in the package structure.
  • At least one of the first connection post or the second connection post is grounded, and all the first heat dissipation blocks are connected as a whole and are connected to the grounded first connection post or the grounded second connection post.
  • the connecting pillars are electrically connected, and all the second heat dissipation blocks are connected as a whole and electrically connected with the grounded first connecting pillar or the grounded second connecting pillar.
  • the integrated first heat dissipation block can be electrically connected to the grounded first connection post or the grounded second connection post, Thus, the first heat dissipation block connected as a whole is grounded.
  • the integrated second heat dissipation block can be electrically connected to the grounded first connection post or the grounded second connection post, so that the integrated second heat dissipation block is grounded, so that the second heat dissipation block
  • the frame structure formed by connecting with the second connecting column and the frame structure formed by connecting the first heat dissipation block and the first connecting column can form a Faraday electromagnetic shielding body, which can well isolate the inside of the package structure
  • the first component, the first heat dissipation block, and the first connecting post are all multiple, and the plurality of first heat dissipation blocks are arranged at intervals, and the first heat dissipation blocks of different The first components and the first connecting posts connected by the blocks are different, and the different first heat dissipation blocks are used to transmit different signals; or the second components, the second heat dissipation blocks, and the There are multiple second connecting pillars, and the plurality of second heat sink blocks are arranged at intervals. The second components and the second connecting pillars connected to different second heat sink blocks are different, and different The second heat dissipation block is used to transmit different signals.
  • the first component, the first heat dissipation block, and the first connecting post are all multiple, and the plurality of first heat dissipation blocks are arranged at intervals, and the first heat dissipation blocks of different
  • the first components and the first connecting posts connected to the blocks are different, and the different first heat dissipation blocks are used to transmit different signals
  • the second components and the second connecting pillars connected to different second heat dissipation blocks are different.
  • the second heat dissipation block is used to transmit different signals.
  • the first components and the first connecting posts connected to the different first heat dissipation blocks are different, and the different first heat dissipation blocks are used to transmit different signals; the different first heat dissipation blocks are used to transmit different signals; The second component and the second connecting post connected to the second heat dissipation block are different, and the different second heat dissipation blocks are used to transmit different signals. That is, in some embodiments, the first heat dissipation block and the second The heat sink can not only play a role in heat transmission, but also play a role in signal transmission, increasing the signal transmission path in the package structure.
  • an external pin is provided on a side of the second package away from the first package, and the external pin is used to electrically connect with the external structure of the package structure.
  • the surface of the first substrate facing away from the first packaging layer is provided with external pins
  • the surface of the second substrate facing away from the second packaging layer is provided with external pins, so that signals can be transmitted through the side of the first substrate. , It can also be transmitted through the second substrate.
  • the number of external pins increases, which can increase the density of the signals drawn in the entire package structure.
  • the components in the package structure can not only be connected to the external pins on the first substrate, but also can be connected to the external pins on the second substrate. This can increase the flexibility of component and wiring arrangement in the package structure, and simplify the design of the package structure.
  • the second encapsulation layer is located on a side of the second substrate facing the first encapsulation layer, and the first connection pillar is connected to the second connection pillar;
  • the packaging structure further includes a connection Layer, the connection layer is connected between the first encapsulation layer and the second encapsulation layer, and connects the first connection pillar and the second connection pillar.
  • connection layer may be solder or conductive glue.
  • the first package body and the second package body are fixedly connected together through the connection layer, which is easier to connect the first package body than the method of directly encapsulating the first package body and the second package body through the encapsulation layer. Disassembled from the second package body.
  • a packaging structure of another structure it can be achieved only by changing the type of the second packaging body connected to the first packaging body (or replacing the first packaging body connected to the second packaging body). A new packaging structure is obtained, so that a new packaging structure can be obtained quickly and conveniently, and the first packaging body or the second packaging body can be recycled, thereby avoiding resource waste.
  • connection layer includes a plurality of sub-connection blocks arranged at intervals, the first connection post and the second connection post are both multiple, and at least part of the first connection post and at least part of the The second connecting pillars are arranged oppositely, the sub-connecting block is connected between the opposing first connecting pillar and the second connecting pillar, and the sub-connecting block is formed of a thermally conductive material.
  • the plurality of sub-connection blocks when the connection layer is solder, may be a plurality of solder joints arranged at intervals; when the connection layer is a conductive glue, the plurality of sub-connection blocks may be a plurality of glue drops arranged at intervals.
  • the fixed connection and electrical connection of the first package body and the second package body are realized by the sub-connecting blocks arranged at intervals, so that the package structure can be simpler when the first package body or the second package body needs to be replaced.
  • the use of materials for the connection layer can be reduced, and the production cost can be reduced.
  • the material of the connection layer can also be filled between the first package body and the second package body, that is, the sub-connection blocks of the connection layer are connected as a whole to achieve a more stable connection. It is effective, and can avoid the gap between the first package body and the second package body, and enhance the strength of the package structure in the thickness direction.
  • the surface of the second heat dissipation block facing away from the second substrate exposes the second packaging layer
  • the surface of the first heat dissipation block facing away from the first substrate exposes the first packaging layer
  • the connection The layer further includes a heat-conducting block connected between the surface of the first heat-dissipating block that exposes the first packaging layer and the surface of the second heat-sinking block that exposes the second packaging layer.
  • the heat conduction block is connected between the first heat dissipation block and the second heat dissipation block, and is used to realize heat transfer between the second heat dissipation block and the second package body, and improve the difference between the first package body and the second package body.
  • the heat transfer speed between the two increases the heat equalization efficiency in the package structure.
  • a heat conduction block is provided between the surface of the first heat dissipation block exposed to the first packaging material layer and the surface of the second heat dissipation block exposed to the second packaging material layer, that is, to increase heat conduction between the first package body and the second package body Therefore, the connection and fixing strength between the first package body and the second package body can be further improved.
  • the surface of the second heat dissipation block facing away from the second substrate exposes the second packaging layer
  • the surface of the first heat dissipation block facing away from the first substrate exposes the first packaging layer
  • the first heat dissipation block exposes the first packaging layer.
  • a heat dissipation block exposes the surface of the first packaging layer and contacts the second heat dissipation block exposed surface of the second packaging layer, and the first heat dissipation block and the second heat dissipation block form an integrated structure.
  • the first connecting pillar exposes the surface of the first packaging material layer and the second connecting pillar exposes the surface of the second packaging material layer to contact, and through the intermolecular interaction between the first connecting pillar and the second connecting pillar The force is fixed, and the first heat dissipation block and the second heat dissipation block can form an integrated structure.
  • the second encapsulation body further includes a third encapsulation layer, the third encapsulation layer is encapsulated on a side of the second substrate away from the second encapsulation layer, and the third encapsulation layer includes a third encapsulation layer.
  • the third packaging layer is packaged on the side of the second substrate facing away from the second packaging layer, that is, packaging layers are provided on opposite sides of the second substrate, thereby increasing the number of components stacked in the thickness direction of the packaging structure.
  • the footprint of the packaging structure applied to the electronic device is reduced while the number of components in the packaging structure is increased, thereby facilitating miniaturization and multi-functionalization of the electronic device.
  • the third packaging layer further includes a plurality of third connecting pillars and one or more third heat sinks embedded in the third packaging material layer; One end is connected to the second substrate, and the other end extends to the surface of the third packaging material layer facing away from the second substrate, and each of the third heat dissipation blocks is connected to at least one of the third connecting pillars, And each of the third heat dissipation blocks is connected to one or more of the third components.
  • part of the heat generated by the third component can be directly transferred to the second substrate, and part of the heat can be transferred to the second substrate through the third heat sink and the third connecting column in turn, increasing the heat transfer of the third component Therefore, the heat generated by the operation of the third component can be transferred to other positions of the packaging structure more quickly, and the heat concentration can be avoided.
  • the heat generated by the second substrate can be transferred to the first substrate through the second connecting column and the first connecting column in sequence, and transferred to the outside of the package structure through the external pins of the first substrate, thereby realizing heat dissipation.
  • the heat generated by the second component in the second encapsulation layer and the first component in the first encapsulation layer can also be transferred to the third encapsulation layer to achieve uniform heat in the package structure and avoid the package structure Heat accumulation in a certain position inside, to avoid damage to the package structure due to heat accumulation.
  • the second substrate includes a wiring layer and an insulating layer covering a side of the wiring layer away from the second encapsulation layer, and the second component is electrically connected to the wiring layer; Part of the insulating layer is hollowed out to expose part of the wiring layer; the side of the second substrate facing away from the second encapsulation layer is covered with a thermally conductive adhesive layer, and the thermally conductive adhesive layer and the exposed part of the wiring Layer contact, the thermally conductive adhesive layer is used to transmit heat.
  • the thermal conductive adhesive layer is in contact with the wiring layer of the second substrate through the hollowed out position of the insulating layer, the heat transferred to the second substrate can be quickly discharged through the thermal conductive adhesive layer, which enhances the heat dissipation effect of the package structure.
  • a release film is provided on the side of the thermally conductive adhesive layer facing away from the second packaging layer. When the packaging structure is fixed on other structures of the electronic device, the release film can be directly torn off and the thermal conductive adhesive layer can be pasted on other structures, which is simple and convenient to operate.
  • the first component includes a front-mounted chip, a surface of the front-mounted chip facing away from the first substrate is laminated with a metal sheet, and the first heat sink is connected to the metal sheet; or
  • the two-component device includes a front-mounted chip, a surface of the front-mounted chip facing away from the second substrate is laminated with a metal sheet, and the second heat dissipation block is connected to the metal sheet.
  • the first component includes a front-mounted chip, a surface of the front-mounted chip facing away from the first substrate is laminated with a metal sheet, and the first heat sink is connected to the metal sheet; and,
  • the second component includes a face-mounted chip, a surface of the face-mounted chip facing away from the second substrate is laminated with a metal sheet, and the second heat dissipation block is connected to the metal sheet.
  • the front-mounted chip in the first package ie, the chip connected to the substrate by the front-mounting method
  • the first heat sink is connected to the metal sheet, thereby avoiding laser on the first packaging material layer Damage to the front-mounted chip when the hole is opened and the first heat dissipation block is formed.
  • the front-mounted chip in the second package (that is, the chip connected to the substrate through the front-mounting method) is laminated with a metal sheet on the surface away from the second substrate, and the second heat sink is connected to the metal sheet, thereby avoiding being placed on the second packaging material. Damage to the front-mounted chip when the layer is drilled by the laser and the second heat dissipation block is formed.
  • the forming material of the metal sheet may be the same as that of the first heat dissipation block and the second heat dissipation block, so that the metal sheet can form an integrated structure with the first heat dissipation block and the second heat dissipation block, so as to avoid increasing the contact interface, thereby enhancing the heat conduction effect .
  • the first components in the first substrate there are a plurality of the first components in the first substrate, and at least two of the first components among the plurality of first components are in the thickness direction of the first package.
  • the second component in the second substrate is multiple, and at least two of the second components in the plurality of second components are in the thickness direction of the second package Set on stacking.
  • there are a plurality of the first components in the first substrate and at least two of the first components among the plurality of first components are in the thickness direction of the first package.
  • the second component in the second substrate is multiple, and the thickness of at least two of the second components in the second package is Stacking settings in the direction.
  • the components are stacked in the thickness direction of the packaging structure, thereby improving the components in the packaging structure. Density.
  • the size of the first substrate can be reduced, and the occupied area of the package structure can be reduced.
  • the present application also provides an electronic device including a functional module and the packaging structure, and the functional module and the packaging structure are electrically connected. Since the packaging structure has a good heat dissipation effect, damage caused by heat concentration in the packaging structure is avoided, so that the packaging structure can have a long service life, and thus the service life of the electronic device can be ensured.
  • the electronic device includes a main board, the packaging structure and the functional module are fixed on the main board and electrically connected to the main board; the first substrate of the packaging structure is opposite to the first packaging layer It is close to the main board and is electrically connected to the main board through the external pins.
  • the packaging structure is connected to each functional module through the circuit of the main board to realize the electrical connection between the packaging structure and each functional module provided on the main board.
  • the packaging structure and part or all of the functional modules are electrically connected through the main board, at least part of the heat generated by the packaging structure can be transmitted through the main board to the functional modules or other structures of the electronic equipment connected to or in contact with the main board, thereby avoiding Heat accumulates in the package structure, causing the package structure to overheat and be damaged.
  • the electronic device includes a middle frame, the middle frame is arranged opposite to the main board, and the packaging structure is located between the middle frame and the main board and connects the middle frame and the main board;
  • the second package body of the package structure and the side facing away from the first substrate are connected to the middle frame, and the middle frame is used for heat dissipation.
  • the packaging structure is disposed between the main board and the middle frame and is in contact with the main board and the middle frame, so that part of the heat generated by the packaging structure is transferred to the main board and partly transferred to the middle frame for dissipation.
  • the packaging structure is fixedly connected to the main board and the middle frame to maintain the stability of the packaging structure in the electronic device.
  • the electronic device is a mobile phone
  • the functional module includes one or more of an antenna module, a sensor module, an audio module, a camera module, a connector module, and a power supply module.
  • the packaging structure is integrated with each functional module. It is electrically connected, so that the antenna module, the audio module, the sensor module, and the camera module 500 are controlled to work through the components in the packaging structure, so that the electronic device realizes various functions.
  • FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the application.
  • FIG. 2 is a schematic cross-sectional view of a part of the structure of the electronic device shown in FIG. 1;
  • FIG. 3 is a schematic diagram of a cross-sectional structure of a package structure according to an embodiment of the application.
  • FIG. 4 is a perspective view of a first package body of the package structure of the embodiment shown in FIG. 3;
  • FIG. 5 is a perspective view of a first package body of a package structure according to some other embodiments of the application.
  • FIG. 6 is a schematic cross-sectional structure diagram of a package structure according to another embodiment of the application.
  • FIG. 7 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 8 is a schematic cross-sectional structure diagram of a package structure according to another embodiment of the application.
  • FIG. 9 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 10 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 11 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 12 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 13 is a schematic partial cross-sectional view of the packaging structure of the embodiment shown in FIG. 12 being installed in an electronic device;
  • FIG. 14 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • 15 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • 16 is a schematic diagram of a cross-sectional structure of a package structure according to another embodiment of the application.
  • FIG. 17 is a schematic cross-sectional structure diagram of a package structure according to another embodiment of the application.
  • FIG. 18 is a flow chart of the manufacturing process of the packaging structure of the embodiment shown in FIG. 3;
  • 19a to 19k are schematic cross-sectional structure diagrams of the package structure in each step in FIG. 18.
  • the application relates to a packaging structure, a packaging method, and an electronic device including the packaging structure.
  • the electronic device may be a mobile phone, a tablet computer, a wearable watch, a router, and other electronic products.
  • the package structure can integrate components such as active devices and/or passive devices in one package.
  • the active device can be a variety of chips and other components
  • the passive device can be a capacitor, an inductor, a resistor, and other components.
  • the packaging structure is electrically connected to the functional modules of the electronic device, so that the functional modules of the electronic device are controlled to work through the cooperation of the active and passive components inside the packaging structure.
  • FIG. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the application.
  • the electronic device includes a packaging structure 100 and at least one functional module electrically connected to the packaging structure 100.
  • the packaging structure 100 is packaged with components capable of controlling the operation of each functional module, so as to control the operation of each functional module through the components packaged in the packaging structure 100 to realize various functions of the electronic device.
  • the components in the package structure 100 include active devices such as processors and memories, and passive devices such as capacitive elements, inductance elements, and resistance elements.
  • the electronic device 1000 is a mobile phone.
  • the functional modules of the mobile phone include an antenna module 200, an audio module 300, a sensor module 400, a camera module 500, a connector module 600, and a power supply module 700, etc., to implement various functions of the mobile phone through various functional modules in the mobile phone.
  • the packaging structure 100 contains an antenna module processing chip, an audio module processing chip, a sensor module processing chip, and a camera module processing chip.
  • the packaging structure 100 is combined with the antenna module 200, the audio module 300, the sensor module 400,
  • the camera modules 500 are electrically connected, so that the antenna module 200, the audio module 300, the sensor module 400, and the camera module 500 are controlled to work through the components in the packaging structure 100, so that the electronic device 1000 realizes various functions.
  • the electronic device 1000 can include other types of functional modules, and other types of components are also correspondingly packaged in the packaging structure 100 to electrically connect each functional module with the packaging structure 100. , So as to realize the functions of the electronic device 1000.
  • the number of components packaged in the package structure 100 can be increased or decreased as needed.
  • a power module processing chip and a connector module processing chip can be added to the package structure 100, and the package structure 100 is electrically connected to the connector module 600 and the power module 700, thereby expanding the package structure 100 Features.
  • FIG. 2 is a schematic cross-sectional view of a partial structure of an electronic device 1000 according to some embodiments of the application.
  • the electronic device 1000 may further include a main board 800, and the packaging structure 100 and part or all of the functional modules are provided on the main board 800.
  • the main board 800 is a printed circuit board (PCB), and the packaging structure 100 is connected to each functional module through the circuit of the main board 800, so as to realize the connection between the packaging structure 100 and each functional module provided on the main board 800. Electric connection.
  • PCB printed circuit board
  • the packaging structure 100 and part or all of the functional modules are electrically connected through the main board 800, at least part of the heat generated by the packaging structure 100 can be transmitted through the main board 800 to the functional modules or the electronic device 1000 connected to or in contact with the main board 800.
  • the embodiment shown in FIG. 2 shows a case where the packaging structure 100 and the connector module 600 are provided on the motherboard 800.
  • the packaging structure 100 When the packaging structure 100 generates a larger amount of heat and the connector module 600 has a lower heat, the packaging structure The heat of 100 can be transferred to the position of the connector module 600 through the main board 800, so as to prevent the heat from accumulating at the position of the packaging structure 100 and causing the packaging structure 100 to be overheated and damaged.
  • the electronic device 1000 further includes a middle frame 900, the middle frame 900 is disposed opposite to the main board 800, and the packaging structure 100 is connected to the middle frame 900 and the main board 800.
  • the middle frame 900 can be used for heat dissipation.
  • the packaging structure 100 is disposed between the main board 800 and the middle frame 900 and is in contact with the main board 800 and the middle frame 900 so that part of the heat generated by the packaging structure 100 is transferred to the main board 800 and partly transferred to the middle frame 900 for dissipation.
  • the packaging structure 100 is fixedly connected to the main board 800 and the middle frame 900 to maintain the stability of the packaging structure 100 in the electronic device 1000.
  • FIG. 3 is a schematic structural diagram of a package structure 100 according to an embodiment of the application.
  • the packaging structure 100 includes a first packaging body 10 and a second packaging body 20 stacked on the first packaging body 10.
  • a connecting layer 30 is provided between the first package body 10 and the second package body 20.
  • the connecting layer 30 is made of an electrically conductive and thermally conductive material, that is, the connecting layer 30 can conduct both electrical conduction and heat conduction.
  • the electrical connection between the first package body 10 and the second package body 20 is realized through the connection layer 30, so that the first package body 10 and the second package body 20 can communicate with each other.
  • connection layer 30 since the connection layer 30 has a heat conduction function, the connection layer 30 can also enable the heat between the first package body 10 and the second package body 20 to be transferred to each other, so as to prevent the heat from being in the first package body 10 or the second package body 20. On the gathering.
  • connection layer 30 may be solder or conductive glue, which has good thermal and electrical conductivity, and can firmly connect the first package body 10 and the second package body 20 together.
  • the first package body 10 and the second package body 20 are fixedly connected together through the connection layer 30, compared to the direct package of the first package body 10 and the second package body 20 through the package layer. In terms of method, it is easier to detach the first package body 10 and the second package body 20.
  • the type of the second packaging body 20 connected to the first packaging body 10 can only be changed (or the first packaging body 20 connected to the second packaging body 20 is replaced.
  • the body 10) can obtain a new packaging structure 100, so that the new packaging structure 100 can be obtained quickly and conveniently, and the first packaging body 10 or the second packaging body 20 can be recycled to avoid waste of resources.
  • an antenna module processing chip and an audio module processing chip are packaged in the first package body 10
  • a sensor module processing chip and a camera module processing chip are packaged in the second package body 20.
  • a package structure 100 encapsulated with an antenna module processing chip, an audio module processing chip, a power module processing chip, and a connector module processing chip only the first package of the power module processing chip and the connector module processing chip needs to be packaged.
  • the second package body 20 replaces the second package body 20 encapsulating the sensor module processing chip and the camera module processing chip, thereby obtaining the required package structure 100.
  • the surface of the first package body 10 facing the second package body 20 has a plurality of first connection terminals 10a
  • the surface of the second package body 20 facing the first package body 10 has a plurality of second connection terminals 20a.
  • the electrical connection of the first package body 10 and the second package body 20 is realized by the electrical connection of at least part of the first connection terminal 10a and at least part of the second connection terminal 20a. In some embodiments, at least part of the first connection terminal 10a is opposite to at least part of the second connection terminal 20a.
  • connection layer 30 includes a plurality of sub-connection blocks 31 arranged at intervals, and each sub-connection block 31 is connected between the first connection terminal 10a and the second connection terminal 20a arranged oppositely, so as to realize the first package body 10 Electrical connection with the second package body 20.
  • the orthographic projection of the second connection terminal 20a on the surface of the first package body 10 facing the second package body 20 at least partially overlaps with the first connection terminal 10a disposed opposite to it.
  • the plurality of sub-connecting blocks 31 when the connecting layer 30 is solder, the plurality of sub-connecting blocks 31 may be a plurality of solder joints arranged at intervals; when the connecting layer 30 is a conductive adhesive, the plurality of sub-connecting blocks 31 may be arranged at a plurality of intervals. Glue drops.
  • the fixed connection and electrical connection between the first package body 10 and the second package body 20 are realized by the sub-connecting blocks 31 arranged at intervals, so that when the package structure 100 needs to replace the first package body 10 or the second package body 20 Can be simpler.
  • the use of materials for the connection layer 30 can be reduced, and the production cost can be reduced.
  • the material of the connection layer 30 can also be filled between the first package body 10 and the second package body 20, that is, the sub-connection blocks of the connection layer 30 are connected as a whole to realize The connection effect is more stable, and the gap between the first package body 10 and the second package body 20 can be avoided, and the strength of the package structure 100 in the thickness direction can be enhanced.
  • the first packaging body 10 includes a first substrate 11 and a first packaging layer 12 packaged on the first substrate 11.
  • the first substrate 11 is a circuit board, and includes two opposite insulating layers 111 and at least one wiring layer 112 disposed between the two insulating layers 111.
  • the first substrate 11 further includes a signal interconnection layer 113 provided between two adjacent wiring layers 112.
  • the signal interconnection layer 113 includes an insulating material layer 1131 and a connecting wire 1132 passing through the insulating material layer 1131.
  • the insulating material layer 1131 separates and insulates the two adjacent wiring layers 112, and the connecting wires 1132 embedded in the insulating material layer 1131 connect the adjacent wiring layers 112, so that the multiple wiring layers 112 can communicate with each other.
  • the wiring layer 112 has two layers. It can be understood that the number of wiring layers 112 may be more layers.
  • the insulating layer 111 has only one layer. Specifically, the insulating layer 111 on the side close to the first encapsulation layer 12 may not be present, and the first encapsulation layer 12 is directly encapsulated on the wiring layer 112 of the first substrate 11.
  • the surface of the insulating layer 111 away from the wiring layer 112 is further provided with solder pads connected to the wiring layer 112, and the solder pads are used to connect components and other structures to the wiring layer 112 of the first substrate 11.
  • An external pin 13 is provided on the side of the first substrate 11 facing away from the first packaging layer 12, and the external pin 13 is used for electrical connection with the external structure of the packaging structure 100.
  • the external structure of the package structure 100 refers to other structures, modules, or components other than the package structure and electrically connected to the package structure.
  • the external pins 13 are connected to the wiring layer 112, so as to realize the electrical connection between the first substrate 11 and the external structure of the package structure 100 (such as the functional modules of the electronic device 1000), so that the package structure 100 is electrically connected to the first substrate 11
  • the connected structure is electrically connected to the external structure of the package structure 100.
  • the packaging structure 100 When the packaging structure 100 is provided on the main board 800, the first substrate 11 is connected to the main board 800 through the external pins 13. Signals generated by a certain working module electrically connected to the main board 800 are sequentially transmitted to the package structure 100 through the main board 800 and the external pins 13; or, the signals generated by processing in the package structure 100 sequentially pass through the first substrate 11 and the external pins 12 , The main board 800 to the working module, so as to realize the communication between the package structure 100 and the working module. In addition, part of the heat generated by the operation of the components in the packaging structure 100 can be transmitted to the main board 800 through the first substrate 11, and the heat generated by the operation of the components in the packaging structure 100 can be dissipated or transferred to the electronic device 1000 through the main board 800. Other structures or working modules avoid heat accumulation at the location of the packaging structure 100 and avoid damage to the packaging structure 100 caused by excessive heat.
  • the first packaging layer 12 includes a first packaging material layer 121, one or more first components 122 embedded in the first packaging material layer 121, a plurality of first connecting pillars 123, and one or more first heat dissipation blocks 124.
  • the first component 122 is a component in the package structure 100, which may be an active device such as a chip, or a passive device such as a capacitor, an inductor, and a resistor. Each first component 122 is electrically connected to the first substrate 11.
  • the first component 122 may be directly connected to the first substrate 11, or may be indirectly connected to the first substrate 11 through other structures.
  • the first component 122 is provided on the first substrate 11, and the pins 1211 of the first component 122 are connected to the bonding pads of the first substrate 11, thereby realizing the first component 122 and the first substrate 11 Direct connection.
  • the first component 122 may be one or more.
  • the first components 122 can pass through the first substrate.
  • the wiring layer 112 of 11 communicates. By designing the routing of the routing layer 112 of the first substrate 11, the connection can be made according to the first component 122 to be electrically connected to the first substrate 11.
  • the first component 122 may be electrically connected to the first substrate 11 by means of patching or bonding.
  • the chip when the first component 122 is a chip, the chip may be connected to the first substrate 11 in a front-mount or flip-chip manner.
  • the first packaging layer 12 includes two first components 122, and the two first components 122 are both chips.
  • One of the first components 122 is connected to the first substrate 11 by flip-chip mounting, that is, the pins of the first component 122 are located on the side of the first component 121 facing the first substrate 11, and the lead of the first component 122 The pins are directly connected with solder pads on the first substrate 11 to realize electrical connection between the first component 122 and the first substrate 11.
  • the other first component 122 is connected to the first substrate 11 by means of formal mounting, that is, the pin of the first component 122 is located on the side of the first component 122 away from the first substrate 11, and the pin is bonded by the bonding wire 1221 It is connected to the bonding pads on the first substrate 11 so as to realize the electrical connection between the first component 122 and the first substrate 11.
  • the front-mounted chip (ie, the chip connected to the substrate by the front-mounting method) is laminated with a metal sheet on the surface away from the first substrate 11, and the first heat sink 124 is connected to the metal sheet, thereby avoiding the first packaging material layer 121
  • the damage to the front-mounted chip when the upper laser opens a hole and forms the first heat dissipation block 124.
  • the forming material of the metal sheet may be the same as or different from the first heat dissipation block 124.
  • the metal sheet is made of the same material as the first heat dissipation block 124 and forms an integral structure with a heat dissipation block 124 to avoid increasing the contact interface, thereby enhancing the heat conduction effect.
  • each first connecting pillar 123 is connected to the first substrate 11, and the other end extends to the surface of the first packaging material layer 121 away from the first substrate 11 and is connected to the second packaging body 20.
  • the end surface of the first connecting pillar 123 extending to the surface of the first packaging material layer 121 facing away from the first substrate 11 is the first connecting terminal 10 a of the first packaging body 10.
  • the first connecting post 123 is fixed on the first substrate 11 by conductive glue or solder, and is electrically connected to the first substrate 11 by conductive glue or solder pads.
  • the first connecting post 123 and the first heat dissipation block 124 are made of electrically and thermally conductive materials, that is, both the first connection post 123 and the first heat dissipation block 124 have high thermal conductivity (the thermal conductivity is greater than 10W/ m ⁇ K), can conduct heat, and the first connecting post 123 and the first heat dissipation block 124 can also conduct electricity.
  • the first connecting post 123 and the first heat dissipation block 124 are made of metal materials such as gold, silver, copper, and aluminum. The materials of the first connecting pillar 123 and the second heat dissipation block may be the same or different.
  • the first connecting post 123 and the first heat dissipation block 124 are both formed of metal copper, and the first connection post 123 and the first heat dissipation block 124 are formed into an integral structure. It can be understood that, in some embodiments, the first connecting pillar 123 and/or the first heat dissipation block 124 may also be made of other non-metallic conductive materials, or in the following embodiments, the first connecting pillar 123 and/or the A heat dissipation block 124 can be a heat pipe, so as to achieve a better heat conduction effect.
  • Each first heat dissipating block 124 is connected to at least one first connecting post 123, and each first heat dissipating block 124 is connected to one or more first components 122, so that at least part of the first component 122 generates heat It can be transferred to the first connecting pillar 123 through the first heat dissipation block 124.
  • the number of the first components 122 and the first heat dissipation blocks 124 are the same, and both are two.
  • Each first heat dissipation block 124 corresponds to one first component 122 and is connected to the corresponding first component 122. connection.
  • the number of the first components 122 may be more than the number of the first heat dissipation blocks 124, and only some of the first components 122 are connected to the first heat dissipation blocks 124.
  • a heat dissipation block 124 is connected to enhance the heat dissipation effect of the active device.
  • the arrow in FIG. 3 shows the heat transfer path in the package structure 100.
  • the first components 122 are all disposed on the first substrate 11 and are directly connected to the first substrate 11, part of the heat of the first components 122 is directly transferred to the first substrate 11 through the first substrate 11 11 is transmitted to the outside of the package structure 100.
  • the first substrate 11 is also connected to the first heat dissipation block 124, and part of the heat of the first component 122 can also be transferred to the first substrate 11 through the first heat dissipation block 124 through the first connecting post 123, and then passes through the first substrate 11. It is transmitted to the outside of the package structure 100.
  • the first substrate 11 is connected to the main board 800 through the external pins 13, all the heat transferred to the first substrate 11 can be transferred to the main board 800.
  • each first component 122 has a corresponding first heat dissipation block 124 connected to it, so that each first component 122 can dissipate heat through the first heat dissipation block 124. It can be understood that, in some embodiments, only part of the first components 122 may be connected to the first heat dissipation block 124 so that only part of the first components 122 can dissipate heat through the first heat dissipation block 124.
  • first heat dissipation block 124 may be provided to connect with the first component 122 that generates a greater amount of heat to ensure heat dissipation.
  • the number of the first heat dissipation blocks 124 is reduced, and the cost is saved.
  • the package structure 100 of the embodiment of the present application can increase the production of the first component 122 by adding the first heat dissipation block 124 and the first connection pillar 123.
  • the heat transmission path improves the heat dissipation capability of the package structure 100.
  • the first encapsulation layer 12 may not have the first heat dissipation block 124.
  • both the first connecting pillar 123 and the first heat dissipation block 124 are made of metal materials, they have higher strength than the first packaging material layer 121. Moreover, in order to achieve a better heat conduction effect, the first connecting pillar 123 and the first heat dissipation block 124 occupy a relatively large volume in the first package body 10. For example, in some embodiments of the present application, the diameter of the first connecting pillar 123 is 200 ⁇ m or more, so as to achieve a better heat conduction effect. Therefore, in this embodiment, the frame structure formed by embedding the first heat dissipation block 124 and the first connecting pillar 123 in the first packaging material layer 121 can also enhance the strength of the first packaging body 10.
  • a signal can be input to the first connecting pillar 123 through the first substrate 11 ,
  • the signal can be transmitted to the first component 122 through the first connecting post 123 and the first heat dissipation block 124; or, the signal generated by the first component 122 can be transmitted to the first component 122 through the first connection post 123 and the first heat dissipation block 124
  • the substrate 11 communicates with the outside world through the first substrate 11.
  • the first connecting post 123 and the first heat dissipation block 124 can also play a signal transmission function, increase the signal transmission path in the package structure 100, and realize the signal redistribution and other functions.
  • the first substrate 11 is electrically connected to the external structure of the package structure 100 through the external pins 13, so as to realize signal communication between the inside and outside of the package structure 100.
  • the structure formed by the connection of the first connection pillar 123 and the first heat dissipation block 124 plays different roles.
  • the external pin 13 is electrically connected to the power module, that is, the input of the first connecting pillar 123 is a power signal, so that the structure formed by the first connecting pillar 123 and the first heat sink 124 can be used as a package structure.
  • the power supply network of 100 can supply power to the components in the first packaging layer 12 that are connected to the heat dissipation blocks through the power supply network.
  • the external pin 13 connected to the first connecting pillar 123 may be grounded, and the ground return flow in the package structure 100 can pass from the first component 122 through the first heat sink 124 and the first connecting pillar 123 in sequence.
  • the connecting wire of the first substrate 11 and the external pin 13 are connected to the ground, thereby forming a low-impedance ground network path, which can form a good Faraday electromagnetic shielding body.
  • the structure formed by the connection of the first connecting pillar 123 and the first heat dissipation block 124 plays different roles, the structure formed by the connection of the first connection pillar 123 and the first heat dissipation block 124 and the position in the package structure 100 may be different.
  • the first heat dissipating block 124 is located on the side of the first component 122 away from the first substrate 11, the first connecting pillar 123 is close to the edge of the first package body 10 relative to the first component 122, and the first heat dissipating block 124 is connected to the The first connecting pillars 123 are connected to form a frame structure covering the side of the first component 122 away from the first substrate 11.
  • the frame structure can enhance the internal strength of the package structure 100 and avoid the package structure 100 from being damaged by external forces.
  • the first connecting post 123 When the first connecting post 123 is grounded through the external pin 13 and the frame structure forms a Faraday electromagnetic shield, it can well isolate the electromagnetic interference between the first component 122 in the package structure 100 and other structures in the package structure 100, and The electromagnetic interference of the external environment of the packaging structure 100 to the first component 122 in the packaging structure 100.
  • the first connecting pillar 123 may be partly close to the edge of the first package body 10 relative to the first component 122, and may also be partly disposed at any other position of the first substrate 11.
  • the first connecting pillar 123 may be disposed between adjacent first components 122 on the first substrate 11.
  • FIG. 4 is a perspective view of the first package body 10 of the package structure 100 of the embodiment shown in FIG. 3.
  • the first heat dissipating block 124 connected to each first component 122 is connected as a whole, and the first connecting posts 123 are all connected to the first heat dissipating block 124.
  • the embodiment shown in FIG. 4 has only one first heat dissipation block 124, and all the first components 122 are connected to the same first heat dissipation block 124.
  • the first heat dissipation block 124 and the first connecting post 123 of the first package body 10 of this embodiment are both connected into an integrated frame.
  • the first heat dissipation block 124 and the first connection post 123 are both connected to form an integrated frame.
  • the first heat dissipation block 124 and the first connection post 123 form an integrated frame.
  • the frame forms a Faraday electromagnetic shield, which can well isolate the electromagnetic interference between the first component 122 in the package structure 100 and other structures in the package structure 100, and the external environment of the package structure 100 affects the first components in the package structure 100. 122 electromagnetic interference.
  • the volume occupied by the first heat dissipation block 124 and the first connecting pillar 123 in the first package body 10 can be larger, and a better heat conduction effect is achieved. And the strength enhancement effect.
  • FIG. 5 is a perspective view of the first package body 10 of the package structure 100 according to some other embodiments of the application.
  • the first connecting column 123 and the first heat dissipation block 124 can play a role in providing signals for the first components, in order to ensure the directionality of signal transmission.
  • the first heat dissipation blocks 124 connected to different first components 122 are arranged at intervals, and the first connection posts 123 connected to different first heat dissipation blocks 124 are also arranged at intervals.
  • there are two first components 122 namely the first component 122a and the first component 122b.
  • first heat dissipation blocks 124 There are also two first heat dissipation blocks 124, namely a first heat dissipation block 124a and a first heat dissipation block 124b.
  • the first heat dissipation block 124a is connected to the first component 122a
  • the first heat dissipation block 124b is connected to the first component 122b.
  • the first heat dissipation block 124a and the first heat dissipation block 124b are spaced apart.
  • the first connection post 123 connected to the first heat dissipation block 124a and the first connection post 123 connected to the first heat dissipation block 124a are connected to different external pins through the wiring layer 112 on the first substrate 11 13.
  • the first connection post 123 connected to the first heat sink 124a and the first connection post 123 connected to the first heat sink 124a respectively input different signals, thus
  • the one component 122a and the first component 122b input different signals, respectively.
  • the structure of the second package body 20 is similar to the structure of the first package body 10, and includes a second substrate 21 and a second package layer 22 packaged on the second substrate 21.
  • the second packaging layer 22 is located on the side of the second substrate 21 facing the first packaging layer 12.
  • the second substrate 21 is a circuit board, and includes two opposite insulating layers 211 and at least one wiring layer 212 disposed between the two insulating layers 211.
  • the second substrate 21 further includes a signal interconnection layer 213 arranged between two adjacent wiring layers 212.
  • the signal interconnection layer 213 includes an insulating material layer 2131 and a connecting wire 2132 passing through the insulating material layer 2131.
  • the insulating material layer 2131 separates and insulates the two adjacent wiring layers 212, and the connecting wires 2132 embedded in the insulating material layer 2131 connect the adjacent wiring layers 212, so that the multiple wiring layers 212 can communicate with each other.
  • the wiring layer 212 is two layers. It can be understood that the number of wiring layers 212 may be more layers.
  • the second substrate 21 may also include only one insulating layer. Specifically, the insulating layer on the side of the second substrate 21 facing the second encapsulation layer 22 is absent, so that the second encapsulation layer 22 is directly encapsulated on the wiring layer 212 of the second substrate 21.
  • the surface of the insulating layer 211 away from the wiring layer 212 is further provided with solder pads connected to the wiring layer 212, and the solder pads are used to connect components and other structures to the wiring layer 212 of the second substrate 21.
  • the second encapsulation layer 22 includes a second encapsulation material layer 221, one or more second components 222 embedded in the second encapsulation material layer 221, a plurality of second connecting pillars 223, and one or more second heat dissipation blocks 224.
  • the second component 222 may be an active device such as a chip, or a passive device such as a capacitor, an inductor, or a resistor. Each second component 222 is connected to the second substrate 21.
  • the second component 222 may be directly connected to the second substrate, or may be indirectly connected to the second substrate 21 through other structures.
  • the second component 222 may be a chip, and the chip may also be connected to the second substrate 21 in a front-mount or flip-chip manner.
  • the front-mounted chip ie, the chip connected to the substrate by the front-mounting method
  • the second heat sink 224 is connected to the metal sheet, thereby avoiding laser opening on the second packaging material layer 221 and Damage to the front-mounted chip during the formation of the second heat dissipation block 224.
  • the forming material of the metal sheet may be the same as or different from the second heat dissipation block 224.
  • the metal sheet is made of the same material as the second heat dissipation block 224 and is connected as an integral structure to avoid increasing the contact interface, thereby enhancing the heat conduction effect.
  • the second component 222 is provided on the second substrate 21, and the pins of the second component 222 are connected to the bonding pads of the second substrate 21, thereby realizing the connection between the second component 222 and the second substrate 21 direct connection.
  • the multiple second components 222 are all disposed on the second substrate 21 and connected to the bonding pads of the second substrate 21, The bonding pads are connected to the wiring layer 212 of the second substrate 21, and then a plurality of second components 222 can be electrically connected through the wiring layer 212 of the second substrate 21, and each second component 222 can pass through The wiring layer 212 of the second substrate 21 performs communication.
  • the second component 222 may be electrically connected to the second substrate 21 by means of patching or bonding.
  • the chip when the second component 222 is a chip, the chip may also be connected to the first substrate 11 in a front-mount or flip-chip manner.
  • each second connecting pillar 223 is connected to the second substrate 21, and the other end extends to the surface of the second packaging material layer 221 away from the second substrate 21 and is connected to the second packaging body 20.
  • the end surface of the second connecting pillar 223 extending to the surface of the second packaging material layer 221 facing away from the second substrate 21 is the second connecting terminal 20 a of the second packaging body 20.
  • the second connecting post 223 and the second heat dissipation block 224 are both made of electrically and thermally conductive materials, that is, both the second connection post 223 and the second heat dissipation block 224 have high thermal conductivity (the thermal conductivity is greater than 10W/m ⁇ K), It can conduct heat, and the second connecting post 223 and the second heat dissipation block 224 can also conduct electricity.
  • the second connecting pillar 223 and the second heat dissipation block 224 may be made of metal materials such as gold, silver, copper, aluminum, and the like.
  • the material of the second connecting pillar 223 and the second heat dissipation block 224 may be the same or different.
  • the second connecting pillar 223 and the second heat dissipation block 224 are both formed of metal copper, and the second connection pillar 223 and the second heat dissipation block 224 are formed into an integral structure.
  • the second connecting post 223 and/or the second heat dissipation block 224 may also be made of other non-metallic conductive materials, or in the following embodiments, the second connection post 223 and/or the second heat dissipation block 224 may be It is a heat pipe, so as to achieve a better heat conduction effect.
  • At least part of the first connection terminal 10a and at least part of the second connection terminal 20a are disposed opposite to each other, that is, at least part of the first connection post 123 and at least part of the second connection post 223 are disposed opposite to each other.
  • the sub-connection block 31 is connected between the first connection terminal 10 a and the second connection terminal 20 a that are disposed oppositely, that is, the sub-connection block 31 is connected between the first connection post 123 and the second connection post 223 disposed oppositely.
  • At least part of the first connecting pillars 123 and at least part of the second connecting pillars 223 are arranged opposite to each other means: at least part of the first connecting pillars 123 and at least part of the second connecting pillars 223 face the surface of the first encapsulation layer 12 on the first substrate 11
  • the orthographic projections partially overlap or completely overlap.
  • the first connecting pillars 123 and the second connecting pillars 223 arranged oppositely on the first substrate 11 face the surface of the first packaging layer 12, and the orthographic projections are completely overlapped, so that when the packaging structure 100 is pressed in the thickness direction, Since the height direction of the first connecting pillar 123 and the second connecting pillar 223 are the same as the thickness direction of the package structure 100, and the first connecting pillar 123 and the second connecting pillar 223 correspond to the same position on the first substrate 11, it is possible to A better supporting effect is achieved, and damage to the packaging structure 100 caused by pressure in the thickness direction is avoided. In addition, the heat transfer path from the first connecting pillar 123 to the second connecting pillar 223 is the shortest, thereby realizing efficient heat transfer.
  • Each second heat dissipation block 224 is connected to at least one second connecting post 223, and each second heat dissipation block 224 is connected to one or more second components 222, so that at least part of the heat of the second components 222 can pass through the first The two heat dissipation blocks 224 will be transferred to the second connecting pillar 223.
  • the number of the second components 222 is more than the number of the second heat dissipation blocks 224, and only a part of the second components 222 are connected to the second heat dissipation blocks 224.
  • the plurality of second components 222 include two active devices and one passive device.
  • the block 224 is connected to enhance the heat dissipation effect of the active device. It can be understood that, in some embodiments, the number of second heat dissipation blocks 224 may be the same as the number of second components 222, and each second component 222 has a corresponding second heat dissipation block 224 connected to it to pass the first heat dissipation block 224. The two heat dissipation blocks 224 dissipate at least part of the heat of the second component 222.
  • the second components 222 are all disposed on the second substrate 21 and directly connected to the second substrate 21, part of the heat of the second components 222 can be directly transferred to the second substrate 21 through the second substrate 21. 21 is transmitted to the outside of the package structure 100.
  • the second substrate 21 is also connected to the second heat dissipation block 224, and part of the heat of the second component 222 can also be transferred to the second substrate 21 through the second heat dissipation block 224 via the second connecting pillar 223, and then passes through the second substrate 21. It is transmitted to the outside of the package structure 100.
  • part of the heat of the second component 222 may also be transferred to the first connecting column 123 through the connecting layer 30 through the second connecting column 223, and then transferred to the first substrate 11.
  • part of the heat generated by the first component 122 can also be transferred to the second substrate 21 through the first heat sink 124, the first connecting pillar 123, the connecting layer 30, and the second connecting pillar 223 in sequence. on.
  • only part of the second component 222 is connected to the second heat dissipation block 224, so that only part of the heat of the second component 222 can be partially dissipated through the second heat dissipation block 224.
  • each second component 222 when one second component 222 generates a large amount of heat and another second component 222 generates a small amount of heat, only a second heat dissipation block 224 may be provided to connect with the second component 222 that generates a greater amount of heat to ensure heat dissipation. At the same time, the number of second heat dissipation blocks 224 is reduced, which saves costs. It can be understood that, in some embodiments, each second component 222 is connected to a second heat dissipation block 224, so that the heat of each second component 222 can be partially dissipated through the second heat dissipation block 224, which improves the packaging. The heat dissipation efficiency of the structure 100.
  • the first heat dissipation block 124 is connected to the first connection post 123, the first connection post 123 is connected to the first substrate 11, the second heat dissipation block 224 is connected to the second connection post 223, and the second connection post 223 is connected to the second connection post 223.
  • the two substrates 21 are connected, and the first connecting post 123 is connected to the second connecting post 223, so that the first heat dissipation block 124, the first connection post 123, the second heat dissipation block 224, the second connection post 223, and the first substrate 11,
  • the second substrate 21 is connected to form a heat dissipation frame, which can increase the heat conduction path of the first component 122 and the second component 222.
  • the heat of the second component 222 can only be transferred to the second substrate 21 first, and then transferred to the first substrate 11 through the second substrate 21,
  • the heat dissipation efficiency of the package structure 100 of the embodiment of the present application is significantly improved.
  • the heat dissipation frame is formed in the first package body 10 and the second package body 20
  • the heat generated in the first package body 10 can be transmitted to the second package body 20 through the heat dissipation frame, and the heat generated in the second package body 20
  • the heat can be transferred to the first package body 10 through the heat dissipation frame, that is, the heat in the first package body 10 and the second package body 20 can be transferred to each other, so that the first package body 10 and the second package body 20 can be transferred to each other.
  • the heat equalization can prevent heat from being concentrated at a certain position in the package structure 100, and avoid damage to the components in the package structure 100 due to temperature concentration.
  • the first heat dissipation block 124, the first connection post 123, the second heat dissipation block 224, the second connection post 223, and the first substrate 11 and the second substrate 21 are connected to form a heat dissipation frame in addition to heat conduction.
  • it can also play other roles, and depending on the role played, the structure of the heat dissipation frame may also be different.
  • the heat dissipation frame plays the role of heat dissipation. Therefore, it is only necessary to maintain the first heat dissipation block 124 to connect the first component 122 and the first connecting post 123, and the second heat dissipation block 224 to connect the second component 222 and the second component 222. Just connect the column 223. Among them, the first heat dissipation blocks 124 connecting different first components 122 can be separated or connected to each other; the second heat dissipation blocks 224 connected to different second components 222 can be separated or connected to each other.
  • the first heat sink 10 is similar to the first package body 10 of the packaging structure shown in FIG.
  • the second heat sink 20 Similar to the first package body 10 of the package structure shown in FIG. 5, the second heat dissipation blocks 224 connected to different second components 222 are arranged at intervals.
  • the first heat dissipation block 124, the first connection pillar 123, the second heat dissipation block 224, and the second connection pillar 223 are all made of metal materials, compared with the first packaging material layer 121 and the second packaging material
  • the strength of the layer 221 is relatively high. Therefore, the heat dissipation frame formed by the first heat dissipation block 124, the first connection pillar 123, the second heat dissipation block 224, and the second connection pillar 223 can also be used as a support frame in the package structure 100 to improve the package.
  • the strength of the structure 100 prevents the packaging structure 100 from being damaged by external pressure.
  • the second heat dissipation block 224 is located on the side of the second component 222 away from the second substrate 21, the second connecting pillar 223 is close to the edge of the second package body 20 relative to the second component 222, and the second heat dissipation block 224 is connected to the
  • the second connecting pillars 223 are connected to form a frame structure covering the side of the second component 222 away from the second substrate 21.
  • the frame structure can enhance the internal strength of the package structure 100 and prevent the package structure 100 from being damaged by external forces. .
  • the second connecting pillar 223 may be partly close to the edge of the first package body 10 relative to the second component 222, and may also be partly disposed at any other position of the second substrate 21.
  • the second connecting pillar 223 may be disposed between the adjacent second components 222 on the second substrate 21.
  • FIG. 6 is a schematic structural diagram of a package structure 100 according to another embodiment of the application.
  • the structures of the first package body 10 and the second package body 20 are similar to the structure of the first package body 10 shown in FIG. As a whole, that is, all the second heat dissipation blocks 224 are connected as a whole.
  • the first connecting post 123 connected to the first heat dissipation block 124 is at least partially electrically connected to the second connection post 223 connected to the second heat dissipation block 224, so that the first heat dissipation block 124 and the first connection
  • the pillar 123 is integrally connected with the second heat dissipation block 224 and the second connecting pillar 223.
  • the first heat dissipation block 124 When at least one of the first heat dissipation block 124, the first connection pillar 123 and the second heat dissipation block 224, and the second connection pillar 223 connected as a whole is grounded, the first heat dissipation block 124.
  • the first connection post 123, the second heat dissipation block 224, and the second connection post 223 can form a Faraday electromagnetic shielding body.
  • at least one first connection post 123 or at least one second connection post 223 is grounded, and the integrated first heat dissipation 124 can be electrically connected to the grounded first connection post 123 or the grounded second connection post 223, so that The integrated first heat dissipation block 124 is grounded.
  • the integrated first heat dissipation block 124 can be directly connected to the grounded first connecting post 123, so that the integrated first heat dissipation block 124 can be grounded; or, the first heat dissipation block 124 connected as one can be
  • the connection layer 30 is connected to the grounded first connecting post 123, so that the first heat dissipation block 124 connected as a whole can be grounded.
  • the integrated second heat dissipation block 124 can be electrically connected to the grounded first connection post 123 or the grounded second connection post 223, so that the integrated second heat dissipation block 124 is grounded.
  • the integrated second heat dissipation block 124 can be directly connected to the grounded first connecting post 123, so that the integrated second heat dissipation block 224 can be grounded; or, the integrated second heat dissipation block 224 can be connected to the ground.
  • the connecting layer 30 is connected to the grounded first connecting post 123, so that the integrated second heat dissipation block 224 can be grounded.
  • the arrow in FIG. 6 shows a schematic diagram of the direction in which the ground return flow generated by the functional system of the package structure 100 returns from the component to the power supply terminal. In this embodiment, at least two of the external pins 13 on the first substrate 11 are grounded, and the return ground signal of the first component 122 can be transmitted to the grounded signal via the wiring layer 112 of the first substrate 11.
  • the external pin 13 is either transmitted to the grounded external pin 13 via the first heat sink 124 and the first ground post 123.
  • the returned ground signal of the second component 222 can be transmitted to the second connection pillar 223 via the wiring layer 112 or the second heat dissipation block 224 of the second substrate 11, and then sequentially pass through the second connection pillar 223, the connection portion 30, and the first connection pillar 223.
  • the connecting pillar 123 and the wiring layer 112 of the first substrate 11 are transmitted to the grounded external pin 13, so that the first heat sink 124, the first connecting pillar 123, the second heat sink 224, and the second connecting pillar 223 are connected as a whole
  • the heat dissipation frame forms a low-impedance ground network path, which can form a good Faraday electromagnetic shielding body.
  • the first heat dissipation block 124 is located on the side of the first component 122 away from the first substrate 11, the first connecting post 123 is close to the edge of the first package body 10 relative to the first component 122, and the first heat dissipation block 124 is connected to the first connecting post 123 to form a frame structure covering the side of the first component 122 away from the first substrate 11;
  • the second heat sink 224 is located on the side of the second component 222 away from the second substrate 21, and the second connecting post 223 is close to the edge of the second package body 20 relative to the second component 222, and the second heat dissipation block 224 is connected to the second connecting pillar 223 to form a frame structure covering the second component 222 facing away from the second substrate 21.
  • first connecting post 123 or the second connecting post 223 When the first connecting post 123 or the second connecting post 223 is grounded through the external pin 13, when the frame structure forms a Faraday electromagnetic shielding body, it can well isolate the first component 122 in the package structure 100 and the package structure 100. The second component 222 and the electromagnetic interference of the external environment of the package structure 100 to the second component 222 in the package structure 100.
  • FIG. 7 is a schematic structural diagram of a package structure 100 according to another embodiment of the application.
  • the structures of the first package body 10 and the second package body 20 are similar to the structure of the first package body 10 shown in FIG. 5, that is, the first component 122, the first heat sink 124, and the first connecting pillar
  • the second component 222, the second heat dissipation block 224, and the second connecting pillar 223 are all multiple, the plurality of second heat dissipation blocks 224 are arranged at intervals, and the second components connected to different and independently arranged second heat dissipation blocks 224 222 and the second connecting pillar 223 are different.
  • the arrow in FIG. 7 shows a schematic diagram of the direction in which the ground return flow generated by the functional system of the package structure 100 returns from the component to the power supply terminal.
  • the external pin 13 connected to the first connecting column 123 on the first substrate 11 is electrically connected to the power module, that is, the power signal is input to the first connecting column 123, and the power signal input to the first connecting column 123 passes through
  • the first heat dissipation block 124 connected to the first connection post 123 is transmitted to the first component 122 to supply power to the first component 122, and passes through the second connection post 223 and the second heat dissipation block connected to the first connection post 123 224 is transmitted to the second component 222 to supply power to the second component 222.
  • the heat dissipation frame in addition to the role of heat dissipation and support frame, can also serve as a power supply network to supply power to the first component 122 and the second component 222.
  • the first heat sink 124 and the first connecting post 123 connected to different first components 122 can be connected to different external pins 13, and different second components 222
  • the connected second heat dissipation block 224 and the second connecting post 223 are connected to different external pins 13.
  • Different external modules 13 are connected to different external modules, so that different first heat dissipation blocks 124 and different second heat dissipation blocks 224 provide different signals for the components connected to them.
  • some of the external pins 13 are electrically connected to the antenna module 200, so that the first component 122 or the second component 222 connected to the external pin 13 communicates with the antenna module 200; some of the external pins 13 are connected to the antenna module 200.
  • the sensor module 400 is electrically connected to enable communication between the first component 122 or the second component 222 connected to the external pin 13 and the sensor module 400.
  • the first connection pillar 123, the first heat dissipation block 124, the second connection pillar 223, and the second heat dissipation block 224 are arranged in the package structure 100, and the first connection pillar 123 and the first heat dissipation block 124 are arranged in the package structure 100.
  • the signal can also be distributed to different first components through the first connecting pillar 123, the first heat sink 124, the second connecting pillar 223, and the second heat sink 224.
  • the component 122 or a different second component 222 that is, through the first connection pillar 123, the first heat dissipation block 124, the second connection pillar 223, and the second heat dissipation block 224, can also realize signal redistribution in the package structure 100.
  • FIG. 8 is a schematic structural diagram of a package structure according to other embodiments of the application.
  • the second substrate 21 is provided with external pins 23 on the side facing away from the second packaging layer 22, and the external pins 23 are used for electrical connection with the external structure of the packaging structure 100.
  • the external pins 23 are connected to the wiring layer 212, so that the second substrate 21 can be electrically connected to the external structure of the package structure 100 (such as the functional modules of the electronic device 1000) through the external pins 23, so that the internal and The structure to which the second substrate 21 is electrically connected (such as the second component 222) is electrically connected to the external structure of the package structure 100.
  • a signal can be input to the second connecting pillar 223 through the second substrate 21 , The signal can be transmitted to the second component 222 through the second connecting pillar 223 and the second heat dissipation block 224.
  • the second connecting pillar 223 is connected to the external pin 23 of the second substrate 21 through the wiring layer 112 on the second substrate 21, and the external pin 23 is connected to the external structure of the package structure 100. The structure communicates with the corresponding second component 222 through the external pin 23, the second substrate 21, the second connecting pillar 223, and the second heat dissipation block 224 in sequence.
  • the external structure of the package structure 100 is connected to the external pin 13 of the first substrate 11, and the external structure of the package structure 100 sequentially passes through the external pin 13, the first substrate 11, the first connection post 123, the second connection post 223,
  • the second heat dissipation block 224 communicates with the corresponding second component 222.
  • the signal transmitted through the external pin 23 can also be transmitted to the first connection post 223, the first connection post 123, and the first heat dissipation block 124 in sequence.
  • the component 122 realizes the communication between the first component 122 and the external structure of the package structure 100.
  • the surface of the first substrate 11 facing away from the first packaging layer 12 is provided with external pins 13
  • the surface of the second substrate 21 facing away from the second packaging layer 22 is provided with external pins 23, so that signals can pass through Transmission on the side of the first substrate 11 can also be performed through the second substrate 21.
  • the number of external pins 13 is increased, thereby It is possible to increase the density of the signals drawn in the entire package structure 100, increase the number of components in the package structure 100, and increase the integrated number of components in the package structure 100, which facilitates the miniaturization of the electronic device 1000 and the improvement of functional diversification.
  • the components in the package structure 100 can not only be connected to the external pins 13 on the first substrate 11, but also can be connected to the external pins 13 on the second substrate 21.
  • the external pins 23 are connected, which can increase the flexibility of the components and wiring arrangement in the package structure 100, and simplify the design of the package structure 100.
  • FIG. 9 is a schematic structural diagram of another embodiment of the application.
  • the difference between this embodiment and the embodiment shown in FIG. 3 is that: in this embodiment, the first components 122 in the 12 layers of the first packaging layer are stacked in the thickness direction of the packaging structure 100, and the first heat sink 124 and the stacked The first component 122 farthest from the first substrate 11 among the first components 122 contacts.
  • the thickness direction of the packaging structure 100 refers to the direction perpendicular to the first substrate 11 toward the surface of the first packaging layer 12, that is, the Y direction shown in FIG. 9.
  • first components 122 there are three first components 122 encapsulated in the first encapsulation layer 12, and the three first components 122 are the first component 122a, the first component 122b, and the first component 122c, respectively.
  • the first component 122 a and the first component 122 b are both disposed on the first substrate 11 and directly connected to the first substrate 11.
  • the first component 122 a and the first component 122 b are stacked in the thickness direction of the packaging structure 100, that is, the first component 122 c is stacked on the side of the first component 122 a facing away from the first substrate 11.
  • the first component 122c is connected to the first substrate 11 through the connecting post 125, so as to realize the electrical connection between the first component 122c and the first substrate 11, and can remove the heat generated by the first component 122c. Part of it is transferred to the first substrate 11 via the connecting pillar 125.
  • the first heat dissipation block 124 is in contact with the surface of the first component 122c away from the first substrate 11, and the heat generated by the operation of the first component 122c is partially transferred to the first heat dissipation block 124 and the first connecting post 123. The first substrate 10 is then transferred out.
  • the end of the connecting pillar 125 away from the first component 122c is connected to the first component 122a, so that the first component 122c and the first component 122a are electrically connected, and the first component Part of the heat of 122a passes through the first component 122c and then is transferred to the first heat dissipating block 124, or the heat generated by the first component 122c can be partly transferred to the first substrate 11 through the first component 122a.
  • the number of the first components 122 stacked in the first packaging layer 12 is not limited in this application, and three, four or more first components 122 can be stacked according to actual needs.
  • the components are stacked in the thickness direction of the packaging structure 100, thereby improving the packaging structure.
  • the density of components within 100 when the same number of first components 122 are packaged in the first encapsulation layer 12, since part of the first components 122 are stacked in the thickness direction of the package structure 100, compared to directly connecting the first components 122 to the first components 122
  • the size of the first substrate 11 can be reduced, and the occupied area of the package structure 100 can be reduced.
  • the second components 222 may also be stacked in the thickness direction of the packaging structure 100, thereby further increasing the density of the components in the packaging structure 100, and using the packaging structure 100
  • the space in the thickness direction reduces the occupied area of the package structure 100.
  • the packaging structure 100 is applied to the electronic device 1000, due to its small occupied area, the size of the electronic device 1000 can be reduced, and the miniaturization of the electronic device 1000 can be achieved.
  • the increased density of components in the package structure 100 compared with the package structure 100 shown in FIG. 3, when the package structure 100 has the same volume, the number of components that can be packaged in the package structure 100 is larger. In turn, it can be beneficial to realize diversified functions of the electronic device 1000.
  • FIG. 10 is a schematic diagram of a package structure 100 according to some other embodiments of the application.
  • a third substrate 126 is further provided in the first packaging layer 12, and the connecting pillars 124 are supported between the third substrate 126 and the first substrate 11, and are electrically connected to the first substrate 126.
  • the surface of the third substrate 126 facing the first substrate 11 and/or the surface facing away from the first substrate 11 may be provided with the first components 122 to make full use of the space in the thickness direction of the packaging structure 100.
  • a plurality of (two or more) first components 122 may be provided on the third substrate 126, and the third substrate 126 realizes the connection between at least part of the first components 122 provided on the third substrate 126. Electric connection.
  • the first component 122c is supported on the surface of the first substrate 11 facing the first encapsulation layer 12 through the connecting pillar 125, and a space can be formed between the first component 122c and the first substrate 11 for arranging the first component 122a. Therefore, the space in the thickness direction of the packaging structure 100 is fully utilized, and the density of the components in the packaging structure 100 is improved.
  • a third substrate 126 may also be provided in the second encapsulation layer 22.
  • the third substrate 126 is supported between the second substrate 21 and the third substrate 126 through the connecting posts 125, and is electrically connected to the second substrate 21 and the third substrate 126.
  • the second component 222 is provided on a surface of the third substrate 126 facing the second substrate 21 and/or a surface facing away from the second substrate 21.
  • a plurality of second components 222 may be provided on the third substrate 126, and the electrical connection between at least a part of the second components 222 provided on the third substrate 126 is achieved through the third substrate 126.
  • the first components 122 can be disposed on the opposite sides of the third substrate 126.
  • the third substrate 126 is provided in the second packaging layer 22, so that the second components 222 can be provided on opposite sides of the third substrate 126, so as to make full use of the space in the thickness direction of the packaging structure 100 and improve the packaging structure.
  • the density of components within 100 is provided in the second packaging layer 22, so that the second components 222 can be provided on opposite sides of the third substrate 126, so as to make full use of the space in the thickness direction of the packaging structure 100 and improve the packaging structure. The density of components within 100.
  • the third substrate 126 may be provided only in the second encapsulation layer 22, and the third substrate 126 is not provided in the first encapsulation layer 12, that is, the second element in the second encapsulation layer 22
  • the devices 222 are stacked in the thickness direction of the packaging structure 100, and the first components 122 in the first packaging layer 12 are all disposed on the first substrate 11.
  • one end of the connecting pillar 124 is connected to the third substrate 126, and the other end may be connected to the first component 122 that is stacked with the third substrate 126 in the thickness direction and is closest to the third substrate 126.
  • one end of the connecting pillar 125 is connected to the third substrate 126, and the other end may be connected to the first component 122 stacked with the third substrate 126 in the thickness direction and closest to the third substrate 126.
  • FIG. 11 shows another package structure 100 of this application.
  • the connection layer 30 further includes a thermally conductive block 32.
  • the heat conduction block 32 is located between the surface of the first heat dissipation block 124 that exposes the first packaging material layer 121 and the surface of the second heat dissipation block 224 that exposes the second packaging material layer 221.
  • the heat conduction block 32 is connected between the first heat dissipation block 124 and the second heat dissipation block 224, and is used to realize the heat transfer between the second heat dissipation block 224 and the second package body 20, and improve the first package body 10 and the second package body 20.
  • a thermal conductive block 32 is provided between the surface of the first heat dissipation block 124 that exposes the first packaging material layer 121 and the surface of the second heat dissipation block 224 that exposes the second packaging material layer 221, that is, between the first packaging body 10 and the second packaging body 10 and the second heat dissipation block 224.
  • the heat-conducting block 32 is added between the packages 20, so that the connection and fixing strength between the first package 10 and the second package 20 can be further improved.
  • the first heat conducting block 32 may be one or more pieces, and the plurality of first heat conducting blocks 32 are arranged at intervals.
  • the first heat conduction block 32 may be a heat conduction structure such as a solder joint or a heat conduction glue layer.
  • the first heat conducting block 32 is the same as the sub-connecting block 31, and both are solder joints, thereby simplifying the manufacturing process.
  • FIG. 12 shows another package structure 100 of this application.
  • the difference between this embodiment and the embodiment shown in FIG. 3 is that the side of the second package body 20 facing away from the first package body 10 is covered with a thermally conductive adhesive layer 23, and the thermally conductive adhesive layer 23 is used to transmit heat.
  • the second substrate 21 of the second packaging body 20 is located on the side facing away from the second packaging layer 22 and away from the first packaging body 10, and the thermally conductive adhesive layer 23 is located on the surface facing away from the second packaging layer 22 of the second substrate 21.
  • the thermally conductive adhesive layer 23 covers the surface of the second substrate 21 facing away from the second package body 20.
  • the thermally conductive adhesive layer 23 can be used to stick the packaging structure 100 to the heat dissipation structure in the electronic device 1000, so as to fix the packaging structure 100 in the electronic device 1000 and enable heat to be transferred to the second substrate 21 and the thermally conductive adhesive layer 23 In terms of the heat dissipation structure, the heat dissipation efficiency of the package structure 100 is enhanced.
  • a part of the insulating layer 111 on the side of the second substrate 21 away from the second encapsulation layer 22 is hollowed out to expose a part of the wiring layer 112, and the thermally conductive adhesive layer 23 covers the second substrate 21 away from the second encapsulation layer 22 At this time, the thermally conductive adhesive layer 22 can directly contact the exposed part of the wiring layer 112. Since the thermally conductive adhesive layer 23 has a higher thermal conductivity than the insulating layer 111, the heat generated by the components in the package structure 100 of this embodiment can be transmitted through the thermally conductive adhesive layer 23 faster.
  • the insulating layer 111 on the side of the second substrate 21 away from the second encapsulation layer 22 can also be directly removed and covered with the thermally conductive adhesive layer 23, so that the wiring layer 112 transmits The heat is transferred out as quickly as possible.
  • the thermally conductive adhesive layer 23 is formed of an insulating and thermally conductive material.
  • a release film 24 is provided on the side of the thermal conductive adhesive layer 23 facing away from the second encapsulation layer 22.
  • the release film 24 is directly torn off to stick the thermal conductive adhesive layer 23 on the middle frame 900, which is simple to operate.
  • FIG. 13 is a schematic partial cross-sectional view when the packaging structure 100 of the embodiment shown in FIG. 12 is installed in an electronic device 1000.
  • the electronic device 1000 includes a middle frame 900 and a motherboard 800, and the middle frame 900 is used to realize heat dissipation of the electronic device 1000.
  • the packaging structure 100 is disposed between the main board 800 and the middle frame 900.
  • the first substrate 11 of the package structure 100 is connected to the main board 800 through the external pins 13, so that the package structure 100 and the first substrate 11 are fixed and electrically connected.
  • the thermal conductive adhesive layer 23 of the package structure 100 contacts the middle frame 900 to fix the package structure 100 and the middle frame 900.
  • the heat generated by the operation of the components in the package structure 100 can be transferred to the first substrate 11 and transferred to the main board 800 through the external pins 13, and the heat is dispersed to various positions of the main board 800 and connected to the main board 800 through the main board 800.
  • the various working modules of the encapsulation structure 100 are prevented from being damaged by the concentration of heat at the position of the packaging structure 100.
  • the heat generated by the components in the packaging structure 100 can be transferred to the second substrate 21, and then transferred to the middle frame 900 through the thermally conductive adhesive layer 23, and the heat is dissipated out of the electronic device 1000 through the middle frame 900.
  • FIG. 14 is a schematic structural diagram of a package structure 100 according to another embodiment of the application.
  • the second packaging body 20 further includes a third packaging layer 25.
  • the third package body 25 is packaged on the side of the second substrate 21 facing away from the second package layer 22.
  • the third packaging layer 25 includes a third packaging material layer 251 and one or more third components 252 embedded in the third packaging material layer 251.
  • Each third component 252 is electrically connected to the second substrate 21.
  • each third component 252 is disposed on the second substrate 21 and is directly connected to the second substrate 21, that is, the pins of the third component 252 are directly connected to the second substrate 21. It can be understood that, in some embodiments of the present application, the third component 252 may also be indirectly connected to the second substrate 21 through a connecting pillar. Alternatively, in some embodiments, the third component 252 is stacked in the thickness direction of the package structure 100. Some of the third components 252 of the stacked third components 252 are directly electrically connected to the second substrate 21, and other parts of the third components 252 are indirectly connected to the second substrate through the third components 252 directly connected to the second substrate 21 21 is electrically connected, or indirectly electrically connected to the second substrate 21 through a connecting post.
  • the third encapsulation layer 25 is encapsulated on the side of the second substrate 21 that faces away from the second encapsulation layer 22, that is, encapsulation layers are provided on opposite sides of the second substrate 21, thereby increasing the thickness of the encapsulation structure 100.
  • the number of devices reduces the occupied area of the packaging structure 100 applied to the electronic device 1000 while increasing the number of components in the packaging structure 100, thereby facilitating miniaturization and multi-functionalization of the electronic device 1000.
  • FIG. 15 is a schematic structural diagram of a package structure 100 according to another embodiment of the application.
  • the third encapsulation layer 25 further includes a plurality of third connecting pillars 253 and one or more third heat dissipation blocks 254, and all the third connecting pillars 253 and all the third heat dissipation blocks 254 are embedded in Inside the third packaging material layer 251.
  • each third connecting pillar 253 is connected to the second substrate 21, the other end extends to the surface of the third packaging layer 25 away from the second substrate 21, and each third heat sink 254 is connected to at least one third connecting pillar 253 , And each third heat dissipation block 254 is connected to one or more third components 252, so that the third component 252 and the third connecting post 253 can be connected through the third heat dissipation block 254, and the heat of the third component 252 It can be transferred to the third connection pillar 253 through the third heat dissipation block 254.
  • part of the heat generated by the third component 252 can be directly transferred to the second substrate 21, and part of the heat can be transferred to the second substrate 21 via the third heat sink 254 and the third connecting column 253 in turn, adding a third element
  • the heat transfer path of the device 252 can quickly transfer the heat generated by the operation of the third component 252 to other positions of the package structure 100 to avoid heat concentration.
  • the heat generated by the second substrate 21 can be transferred to the first substrate 11 through the second connecting column 223 and the first connecting column 123 in turn, and transferred to the outside of the package structure 100 through the external pins 13 of the first substrate 11, thereby achieving Heat dissipation.
  • the heat generated by the second component 222 in the second encapsulation layer 22 and the first component 122 in the first encapsulation layer 12 can also be transferred to the third encapsulation layer 25 to achieve
  • the uniform heat in the packaging structure 100 avoids heat accumulation at a certain position in the packaging structure 100 and avoids damage to the packaging structure due to heat accumulation.
  • the surface of the third heat sink 254 away from the second substrate 21 exposes the third packaging material layer 251 to simplify the production process.
  • the thermal conductive adhesive layer 23 is covered on the side of the third encapsulation layer 25 away from the second substrate 21. Since the surface of the third connecting pillar 253 away from the third substrate 126 exposes the third packaging material layer 251, the third connecting pillar 253 can contact the thermally conductive adhesive layer 23 to connect the part of the packaging structure 100 through the third connecting pillar 253. The heat is transferred to the thermal conductive adhesive layer 23.
  • the thermally conductive adhesive layer 23 can fix the package structure 100 to the heat dissipation structure in the electronic device 1000, and enable the heat generated in the package structure 100 to be transferred to the electronic device through the thermally conductive adhesive layer 23 On the heat dissipation structure in the device 1000.
  • the third encapsulation material layer 251 is exposed on the side of the third heat sink 254 facing away from the second substrate 21, when the thermally conductive adhesive layer 23 covers the third encapsulation layer 25 on the side facing away from the second substrate 21, the third The heat sink 254 is in direct contact with the thermal conductive adhesive layer 23, so that the heat generated by the third component 252 can be transferred to the thermal conductive adhesive layer 23 more quickly, and is transferred to the heat dissipation structure outside the package structure 100 through the thermal conductive adhesive layer 23, improving The heat dissipation efficiency of the package structure 100.
  • FIG. 16 is a schematic structural diagram of a package structure 100 according to another embodiment of the application.
  • the difference between this embodiment and the embodiment shown in FIG. 3 is that the surface of the first heat dissipation block 124 facing away from the first substrate 11 exposes the first packaging material layer 121, and the surface of the second heat dissipation block 224 facing away from the second substrate 21 exposes the first packaging material layer 121.
  • the first heat dissipation block 124 is exposed on the surface of the first encapsulation layer 12 and the second heat dissipation block 224 is exposed on the surface of the second encapsulation layer 22 to contact, and the first heat dissipation block 124 and the second heat dissipation block 224 are integrated structure.
  • the formation of the first heat dissipation block 124 and the second heat dissipation block 224 as an integral structure means that the first heat dissipation block 124 and the second heat dissipation block 224 can realize the first package 10 and the second heat dissipation block through intermolecular force.
  • the fixed connection between the two packages 20 is a structure that the first heat dissipation block 124 and the second heat dissipation block 224 can realize the first package 10 and the second heat dissipation block through intermolecular force.
  • the first heat dissipation block 124 is exposed to the surface of the first encapsulation layer 12 and the second heat dissipation block 224 is exposed to the surface of the second encapsulation layer 22 to contact, and the contact interface is heated, pressurized, etc., so that the first heat dissipation An intermolecular force is generated between the surface of the block 124 exposed to the first packaging layer 12 and the surface of the second heat dissipation block 224 exposed to the second packaging layer 22, so that the first heat dissipation block 124 and the second heat dissipation block 224 form an integrated structure.
  • the first connecting pillar 123 is exposed on the surface of the first packaging material layer 121 and is in contact with the second connecting pillar 223 exposed on the surface of the second packaging material layer 221, and passes through the first connecting pillar 123 and the second connecting pillar 223.
  • the intermolecular forces are fixed.
  • the first connecting pillar 123, the second connecting pillar 223, the first heat dissipation block 124, and the second heat dissipation block 224 are formed of metal copper.
  • the first package body 10 and the second package body 20 are stacked, and the first heat dissipation block 124 exposes the surface of the first packaging layer 12 to contact with the second heat dissipation block 224 exposes the surface of the second packaging layer 22.
  • the first connecting pillar 123 exposes the surface of the first packaging material layer 121 and contacts the second connecting pillar 223 with the exposed surface of the second packaging material layer 221, and then the packaging structure 100 is heated and pressurized to make the first heat sink 124 and The copper-copper bonding intermolecular force is generated between the second heat sink 224, so that the first package body 10 and the second package body 20 are fixed together by bonding.
  • the copper-copper bonding intermolecular force will also be generated between the first connecting pillar 123 and the second connecting pillar 223 to realize the fixation and electrical connection between the first connecting pillar 123 and the second connecting pillar 223.
  • the surface of the first heat sink 124 away from the first substrate 123 slightly protrudes from the surface of the first packaging material layer 121 away from the first substrate 123, and the surface of the second heat sink 224 away from the second substrate 223 slightly protrudes
  • the first packaging material layer 121 and the second packaging material layer 221 will not affect the first heat sink 124 and the first heat sink 124 when the packaging structure 100 is heated and pressurized.
  • the close contact of the second heat dissipation block 224 avoids the influence of the intermolecular force between the first heat dissipation block 124 and the second heat dissipation block 224.
  • the first connecting pillar 123, the second connecting pillar 223, the first heat dissipation block 124, and the second heat dissipation block 224 are formed of the same material, and the first heat dissipation block 124 and the first connection pillar 123 are connected,
  • the second heat dissipation block 224 is connected to the second connection pillar 223. Therefore, the first connection pillar 123 may not be disposed opposite to the second connection pillar 223, but corresponds to the position of the first heat dissipation block 124, that is, the first package body 10.
  • the second connecting pillar 223 exposes one end of the second package material layer 221 to contact the first heat sink 124, so that the first connection The signal transmitted in the pillar 123 can be transmitted to the second connecting pillar 223 through the first heat dissipation block 124.
  • the first connecting post 123 and the second heat sink 224 can also generate intermolecular forces under certain conditions, so that the first package 10 and the second package 20 is fixed and electrically connected; or, when the second connecting column 223 is in contact with the first heat sink 124, the second connecting column 223 and the first heat sink 124 can also generate intermolecular force under certain conditions, so that the first package The body 10 and the second package body 20 are fixed and electrically connected.
  • FIG. 17 shows another package structure 100 of this application.
  • the second substrate 21 is located on the side of the second packaging layer 22 facing the first substrate 11, and the first connecting pillar 123 is electrically connected to the second substrate 21.
  • the second substrate 21 is provided with solder pads connected to the wiring layer 112 of the second substrate 21, and the first connecting pillars 123 are exposed on the surface of the first packaging material layer 121 through the connecting layer 30 and the second substrate 21 The solder pads on the upper side are connected, thereby realizing the electrical connection between the first connecting pillar 123 and the substrate.
  • the surface of the first connecting pillar 123 exposed from the first packaging material layer 121 is the first output terminal 10a of the first package body 10, and the bonding pad on the second substrate 21 that is electrically connected to the first connecting pillar 123 is The second connection terminal 20a.
  • the side of the second encapsulation layer 22 facing away from the second substrate 21 is covered with a thermally conductive adhesive layer 23.
  • the surface of the second heat sink 224 away from the second substrate 21 exposes the second packaging material layer 221
  • the surface of the second connecting pillar 223 away from the second substrate 21 exposes the second packaging material layer 221.
  • the thermally conductive adhesive layer 23 When the thermally conductive adhesive layer 23 is covered on the second encapsulation layer 22, it can directly contact the second heat dissipation block 224 and the second connecting pillar 223, thereby transferring the heat transferred from the second heat dissipation block 224 and the heat transferred to the second connecting pillar 223 It can be quickly dissipated through the thermal conductive adhesive layer 23, and the heat dissipation efficiency of the package structure 100 is improved.
  • the application also provides a method for manufacturing the packaging structure 100.
  • FIG. 18, is a flowchart of the manufacturing process of the package structure 100 of the embodiment shown in FIG. 3.
  • the method for forming the package structure 100 is to first form the first package body 10 and the second package body 20, and then connect the first package body 10 and the second package body 20 through the connection layer 30 to realize the first package body 10 and the second package body 20.
  • the method of forming the first package body 10 may include:
  • Step 110 referring to FIG. 19a, fix the first connecting pillar 123 and the first component 122 on the first substrate 11.
  • step 110 is to fix the first connecting pillars 123 and part of the first components on the first substrate 11. ⁇ 122 ⁇ Device 122.
  • the method of fixing the first connecting pillar 123 on the first substrate 11 may be by means of conductive adhesive bonding or soldering, so that the first connecting pillar 123 is fixed and electrically connected to the first substrate 11.
  • the first component 122 may be fixed on the first substrate 11 by means of patching or bonding, so as to realize the fixing and electrical connection between the first component 122 and the first substrate 11.
  • the metal sheet 125 needs to be pasted on the surface of the chip away from the first substrate 11 by means of glue or welding.
  • the material of the metal sheet 125 is the same as the material of the first connecting pillar 123 and the first heat dissipation block 124. It can be understood that, in some embodiments, the material of the metal sheet 125 may also be different from the material of the first connecting pillar 123 or the first heat dissipation block 124.
  • Step 120 Referring to FIG. 19b, the first encapsulation material layer 121 is encapsulated on the side of the first substrate 11 where the first connecting pillars 123 and the first components 122 are provided, so that the first connecting pillars 123 and the first components 122 All are embedded in the first packaging material layer 121.
  • the first packaging material layer 121 is a packaging material such as resin.
  • Step 130 Referring to FIG. 19c, a groove is formed on the surface of the first packaging material layer 121 facing away from the first substrate 11 to expose the surface of the first connecting pillar 123 facing away from the first substrate 11 and the first component 122 facing away from the first substrate 11 surface.
  • a groove is formed in the first packaging material layer 121 in step 130 to expose the metal sheet provided on the surface of the first component 122.
  • the groove is formed by laser grooving, and the depth of the laser grooving can be controlled according to specific requirements. Because when the chip is fixed by a formal mounting method, the active surface of the chip faces away from the first substrate 11. When laser grooving, since the position of the groove is located above the chip, in order to avoid the problem of insufficient control accuracy of the groove depth and damage to the chip, a metal sheet is formed on the side of the chip being mounted away from the first substrate 11, and the laser is grooved to The metal sheet 125 is exposed, so that damage to the chip caused by the laser grooving can be avoided. It is understandable that in some other embodiments of the present application, the groove may also be formed by molding or the like.
  • Step 140 Referring to FIG. 19d, a metal layer 126 is formed on the side of the first packaging material layer 121 facing away from the first surface.
  • the metal layer 126 covers the surface of the first packaging material layer 121 facing away from the first substrate 11, and filling it in step 130 The groove formed.
  • Step 150 Referring to FIG. 19e, the metal layer 126 is thinned to an appropriate thickness, and the first heat sink 124 connecting the first component 122 and the first connecting pillar 123 is obtained.
  • the surface of the thinned metal layer 126 away from the first substrate 11 is a flat surface to facilitate processing in subsequent steps. It can be understood that, in some embodiments, step 150 may be omitted.
  • the method of forming the second package body 20 is similar to the method of forming the first package body 10, including:
  • Step 210 Referring to FIG. 19f, fix the second connecting pillar 223 and the second component 222 on the second substrate 21.
  • step 110 is to fix the second connecting pillars 223 and part of the second components on the second substrate 21. ⁇ 222.
  • the method of fixing the second connecting post 223 on the second substrate 21 may be by means of conductive adhesive bonding or soldering, so that the second connecting post 223 and the second substrate 21 are fixed and electrically connected.
  • the second component 222 may be fixed on the second substrate 21 by means of patching or bonding, so as to realize the fixation and electrical connection between the second component 222 and the second substrate 21.
  • the metal sheet 225 needs to be pasted on the surface of the chip away from the second substrate 21 by means of glue or welding.
  • the material of the metal sheet 225 is the same as the material of the second connecting pillar 223 and the second heat dissipation block 224. It can be understood that, in some embodiments, the material of the metal sheet 225 may also be different from the material of the second connecting pillar 223 or the second heat dissipation block 224.
  • Step 220 Referring to FIG. 19g, the second encapsulation material layer 221 is encapsulated on the side of the second substrate 21 on which the second connecting pillars 223 and the second components 222 are provided, so that the second connecting pillars 223 and the second components 222 All are embedded in the second packaging material layer 221.
  • the second packaging material layer 221 is a packaging material such as resin.
  • Step 230 Referring to FIG. 19h, a groove is formed on the surface of the second packaging material layer 221 facing away from the second substrate 21 to expose the surface of the second connecting pillar 223 facing away from the second substrate 21 and the second component 222 facing away from the second substrate 21 surface.
  • a groove is formed in the second packaging material layer 221 in step 230 to expose the metal sheet 225 provided on the surface of the second component 222.
  • the groove is formed by laser grooving, and the depth of the laser grooving can be controlled according to specific requirements. Because when the chip is fixed by a formal mounting method, the active surface of the chip faces away from the second substrate 21.
  • laser grooving since the position of the groove is located above the chip, in order to avoid the problem of insufficient control accuracy of the groove depth and damage the chip, a metal sheet is formed on the side of the chip being mounted away from the second substrate 21, and the laser is grooved to The metal sheet 225 is exposed, so that damage to the chip by the laser groove can be avoided. It is understandable that in some other embodiments of the present application, the groove may also be formed by molding or the like.
  • Step 240 Referring to FIG. 19i, a metal layer 226 is formed on the side of the second packaging material layer 221 facing away from the first surface.
  • the metal layer 226 covers the surface of the second packaging material layer 221 facing away from the second substrate 21, and filling it in step 130 The groove formed.
  • Step 250 referring to FIG. 19j, the metal layer 226 is thinned to an appropriate thickness, and the second heat dissipation block 224 connecting the second component 222 and the second connecting pillar 223 is obtained.
  • the surface of the thinned metal layer 226 away from the second substrate 21 is a flat surface to facilitate processing in subsequent steps. It can be understood that, in some embodiments, step 150 may be omitted.
  • the second package body 20 further includes the third package layer 25, by repeating step 210 to step 250 on the side of the second substrate 21 that faces away from the second component 222, thereby forming a third package.
  • Encapsulation layer 25 when the second package body 20 further includes the third package layer 25, by repeating step 210 to step 250 on the side of the second substrate 21 that faces away from the second component 222, thereby forming a third package.
  • fixing the first package body 10 and the second package body 20 includes:
  • Step 310 Referring to FIG. 19k, the first package body 10 and the second package body 20 are fixedly connected through the connection layer 30, and the electrical connection between the first package body 10 and the second package body 20 is realized.
  • connection layer 30 includes a sub-connection block 31, which may be formed of solder or conductive glue, that is, the first package body 10 and the second package body 20 are fixedly connected by soldering or dispensing. Electric connection.
  • step 310 can be replaced by attaching the first packaging material layer 211 of the first package body 10 to the second packaging material layer 221 of the second package body 20, and combining the first package body 10 and the second package body
  • the body 20 is heated and pressurized to form an intermolecular force between the first heat dissipation block 124 of the first package body 10 and the second heat dissipation block 224 of the second package body 20, thereby realizing the first package body 10 and the second package
  • the body 20 is fixedly connected and electrically connected.
  • part of the heat generated by the first component 122 can be directly transferred to the first substrate 11, and part of the heat generated by the first component 122 can be transferred to the first substrate 11 through the first heat sink 124 and the first connecting pillar 123 connected to the first component 122.
  • part of the heat generated by the second component 222 can also be directly transferred to the second substrate 22, and part of it can be transferred to the second substrate 21 through the second heat dissipation block 224 connected to the second component 222 and the second connecting post 223. It can be known from the heat transmission paths of the first component and the second component that there are multiple heat transmission paths of the first component and the second component in this application, and the heat is generated when the first component or the second component is working.
  • heat can be transferred out in a variety of ways to improve the heat transfer efficiency of the package structure and enhance the heat dissipation effect of the package structure, so as to avoid excessive heat in the three-dimensional package stack structure and affect the components in the package structure. Normal work or damage to the components in the package structure.
  • the first connecting pillar 123 and the second connecting pillar 223 are connected, so that the first package body 10 and the second package body 20 are electrically connected.
  • the heat generated by the components in the first package body 10 or the second package body 20 can be transferred between the first package body 10 and the second package body 20, so as to prevent the heat from being in the first package body 10 or the second package body 10
  • the two encapsulation bodies 20 are assembled to avoid damage caused by the accumulation of heat in the encapsulation structure 100.

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Abstract

本申请公开了一种封装结构，由于第二元器件与第二基板连接，使得第二元器件的热量能够直接传输至第二基板。另外，每个第二散热块与至少一个第二连接柱连接，且每个第二散热块连接一个第二元器件，即至少部分第二元器件与第二连接柱通过第二散热块连接，使得至少部分第二元器件的热量还能够通过第二散热块传输至第二连接柱，再通过第二连接柱传输至第二基板或第二连接柱连接的其它结构，从而将第二元器件的热量传输出去，增加第二元器件的导热途径。本申请中，封装结构内的元器件的热量传输途径均有多种，在元器件工作发热时，能够通过多种途径及时的将热量传输出去，以提高封装结构的热量传输效率，增强封装结构的散热效果。

Description

封装结构和电子装置
本申请要求于2019年10月10日提交中国专利局，申请号为201910962547.2、申请名称为“封装结构和电子装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及封装技术领域，尤其涉及一种封装结构及包括所述封装结构的电子装置。
背景技术
在终端产品小型化、多功能化的趋势下，三维封装堆叠技术成为增加电路密度的非常重要的有效手段之一。通过三维封装堆叠技术，越来越多的被动器件、主动器件等元器件被集成在一起，使得三维封装堆叠结构内元器件的散热成为一个越来越凸显并亟待解决的问题，以避免三维封装堆叠结构内元器件的热量集中而影响封装结构内元器件的正常工作或对封装结构内元器件造成的损坏。
发明内容
本申请提供一种具有良好的散热效果的封装结构，以及包括所述封装结构的电子装置。
第一方面，本申请提供一种封装结构，所述封装结构包括第一封装体及堆叠于所述第一封装体上的第二封装体。
所述第一封装体包括第一基板以及封装于所述第一基板上的第一封装层；所述第一基板背离所述第一封装层的一侧形成多个外接引脚，所述外接引脚用于连接所述封装结构的外接结构；所述第一封装层包括第一封装材料层以及嵌设于所述第一封装材料层中的一个或者多个第一元器件和多个第一连接柱；每个所述第一元器件均与所述第一基板电连接；每个所述第一连接柱一端连接所述第一基板，另一端延伸至所述第一封装材料层背离所述第一基板的表面；所述第一连接柱采用导热材料形成。
所述第二封装体包括第二基板以及封装于所述第二基板上的第二封装层；第二封装层包括第二封装材料层以及内嵌于所述第二封装材料层中的一个或者多个第二元器件、多个第二连接柱及一个或者多个第二散热块；每个所述第二元器件均与所述第二基板连接；每个所述第二连接柱一端连接所述第二基板，另一端延伸至所述第二封装材料层背离所述第二基板的表面；每个所述第二散热块与至少一个所述第二连接柱连接，且每个所述第二散热块连接一个或多个所述第二元器件；所述第二连接柱、所述第二散热块采用导热材料形成；所述第二基板或所述第二连接柱连接所述第一连接柱。
本申请中，由于每个所述第二元器件与所述第二基板连接，使得所述第二元器件的热量能够直接传输至所述第二基板。另外，每个所述第二散热块与至少一个所述第二连接柱连接，且每个所述第二散热块连接一个所述第二元器件。即至少部分所述第二元器件能够通过所述第二散热块与所述第二连接柱连接。由于所述第二连接柱与所述第二基板连接，且所述第二基板或者所述第二连接柱与所述第一连接柱连接，从而所述第二元器件产生的热量能够依次通过所述第二散热块、所述第二连接柱传输至所述第二基板，或者依次通过所述第二散热块、所述第二连接柱及所述第一连接柱传输至所述第一基板上，从而增加所述第二元器件的传热途径，加快所述第二元器件的热量的散出。一些实施例中，所述第一 基板上形成有多个外接引脚，通过所述外接引脚连接封装结构的外接结构，从而能够将传输至所述第一基板的热量经外接引脚传输至封装结构的外接结构，以实现封装结构的散热。对于本申请来说，由于所述第二元器件的途径增加，能够使得封装结构内的第二元器件的热量快速的传输至第一基板，从而加快所述封装结构的散热效率。本申请中，相对于第二元器件的热量只能依次通过第二基板、第二连接柱、第一连接柱将热量传输至第一基板的方式来说，本申请的第二元器件的热量传输至第一基板的途径大大增加，进而能够加快所述封装结构内热量的散出。并且，由于在所述封装结构内设置所述第二散热块、所述第一连接柱、第二连接柱，使得所述封装结构内的热量能够通过所述第二散热块、所述第一连接柱、第二连接柱进行传输，使得热量能够快速的在所述第一封装体与所述第二封装体之间进行交换，避免热量在所述第一封装体内或者所述第二封装体内聚集，从而避免热量聚集而造成的封装结构内元器件的损坏。
一些实施例中，封装结构内的热量还能够经所述第二基板一侧传输出去。本实施例中，由于所述第二元器件的热量传输至所述第二基板的途径较多，即能够直接传输至所述第二基板，也能够依次通过所述第二散热块以及所述第二连接柱传输至所述第二基板，从而能够更快速的将所述封装结构内的热量传输至封装结构的外部，加快封装结构的散热效率，使得封装结构能够有良好的散热效果，从而能够避免三维封装堆叠结构内的热量过高而影响封装结构内元器件的正常工作或对封装结构内元器件造成的损坏。
一些实施例中，所述第一封装体包括一个或者多个第一散热块，每个所述第一散热块与至少一个所述第一连接柱连接，且每个所述第一散热块与一个或多个所述第一元器件连接；所述第一散热块为导热材料形成。由于所述第一元器件与所述第一基板连接，使得所述第一元器件的热量能够直接传输至所述第一基板，并通过所述第一基板传输出去。另外，所述第一元器件与所述第一连接柱通过所述第一散热块连接，且所述第一连接柱与所述第一基板连接，使得所述第一元器件的热量还能够通过所述第一散热块传输至所述第一连接柱，再通过所述第一连接柱传输至所述第一基板，并通过所述第一基板传输出去。即本实施例中，所述第一封装层内的第一元器件的导热途径较多，能够快速的将第一元器件工作产生的热量传输出去，进一步提高所述封装结构的散热效率。并且，由于封装结构内的导热途径增加，使得所述第一封装体与所述第二封装体之间的热量也能够快速的进行传输，避免热量在封装结构内的某个位置进行集中，从而避免热量集中而造成的元器件的损坏。
一些实施例中，每个所述第一散热块均位于所述第一元器件背离所述第一基板的一面，每个所述第一连接柱均相对所述第一元器件靠近所述第一封装体的边缘；或每个所述第二散热块均位于所述第二元器件背离所述第二基板的一面，所述第二连接柱相对所述第二元器件靠近所述第二封装体的边缘。一些实施例中，每个所述第一散热块均位于所述第一元器件背离所述第一基板的一面，每个所述第一连接柱均相对所述第一元器件靠近所述第一封装体的边缘；并且，每个所述第二散热块均位于所述第二元器件背离所述第二基板的一面，所述第二连接柱相对所述第二元器件靠近所述第二封装体的边缘。本申请实施例中，所述第一连接柱相对所述第一元器件靠近所述第一封装体的边缘，所述第一散热块与所述第一连接柱相连形成罩设于所述第一元器件背离所述第一基板一面的框架结构，所述框架结构能够增强所述封装结构内部的强度，避免所述封装结构受到外界的力的作用而产生的损坏。当所述第一连接柱或第二连接柱接地时，框架结构能够形成法拉第电磁屏蔽体时，能够很好的隔离所述封装结构内第一元器件与封装结构内其它结构之间的电磁干扰，以及 封装结构外部环境对封装结构内的第一元器件的电磁干扰。所述第二连接柱相对所述第二元器件靠近所述第二封装体的边缘，所述第二散热块与所述第二连接柱相连形成罩设于所述第二元器件背离所述第二基板一面的框架结构，所述框架结构能够增强所述封装结构内部的强度，避免所述封装结构受到外界的力的作用而产生的损坏。当所述第一连接柱或第二连接柱通过接地时，框架结构形成法拉第电磁屏蔽体时，能够很好的隔离所述封装结构内第二元器件与封装结构内其它结构之间的电磁干扰，以及封装结构外部环境对封装结构内的第二元器件的电磁干扰。
一些实施例中，至少一个所述第一连接柱或者所述第二连接柱接地，所有的所述第一散热块连接为一体并与接地的所述第一连接柱或接地的所述第二连接柱电连接，所有的所述第二散热块连接为一体并与接地的所述第一连接柱或接地的所述第二连接柱电连接。本申请实施例中，由于至少一个所述第一连接柱或者所述第二连接柱接地，连接为一体的第一散热块能够与接地的第一连接柱或接地的第二连接柱电连接，从而使得连接为一体的所述第一散热块接地。并且，连接为一体的第二散热块能够与接地的第一连接柱或接地的第二连接柱电连接，从而使得连接为一体的所述第二散热块接地，从而使得所述第二散热块与所述第二连接柱相连形成的框架结构以及所述第一散热块与所述第一连接柱相连形成的框架结构均能够形成法拉第电磁屏蔽体，能够很好的隔离所述封装结构内的第一元器件与第二元器件之间的电磁干扰，以及封装结构外部环境对封装结构内的元器件的电磁干扰。
一些实施例中，所述第一元器件、所述第一散热块以及所述第一连接柱均为多个，多个所述第一散热块之间间隔设置，不同的所述第一散热块连接的所述第一元器件以及所述第一连接柱不同，不同的所述第一散热块用于传输不同的信号；或所述第二元器件、所述第二散热块以及所述第二连接柱均为多个，多个所述第二散热块之间间隔设置，不同的所述第二散热块连接的所述第二元器件以及所述第二连接柱不同，不同的所述第二散热块用于传输不同的信号。一些实施例中，所述第一元器件、所述第一散热块以及所述第一连接柱均为多个，多个所述第一散热块之间间隔设置，不同的所述第一散热块连接的所述第一元器件以及所述第一连接柱不同，不同的所述第一散热块用于传输不同的信号；并且，所述第二元器件、所述第二散热块以及所述第二连接柱均为多个，多个所述第二散热块之间间隔设置，不同的所述第二散热块连接的所述第二元器件以及所述第二连接柱不同，不同的所述第二散热块用于传输不同的信号。
本申请实施例中，不同的所述第一散热块连接的所述第一元器件以及所述第一连接柱不同，不同的所述第一散热块用于传输不同的信号；不同的所述第二散热块连接的所述第二元器件以及所述第二连接柱不同，不同的所述第二散热块用于传输不同的信号，即在一些实施例中，第一散热块以及第二散热块不仅能够起到热量传输的作用，还可以起到信号传输的作用，增加封装结构内的信号传输路径。
一些实施例中，所述第二封装体背离所述第一封装体的一侧设有外接引脚，所述外接引脚用于与所述封装结构的外接结构电连接。本申请实施例中，由于第一基板背离第一封装层的表面设有外接引脚，第二基板背离第二封装层的表面设有外接引脚，使得信号既可以通过第一基板侧进行传输，也可以通过第二基板进行传输，相对于只在单侧(如第一基板)设置外接引脚的方式来说，外接引脚的数量增加，从而能够增加整个封装结构中引出信号的密度，增加封装结构内的元器件的数量，提高封装结构内的元器件的集成数量，便于实现电子装置的小型化以及功能多样化的提升。并且，相较于只在单侧设置外接引脚的 方式来说，封装结构内的元器件不仅可以与第一基板上的外接引脚连接，还可以与第二基板上的外接引脚连接，从而能够增加封装结构内元器件以及走线设置的灵活性，简化封装结构设计。
一些实施例中，所述第二封装层位于所述第二基板朝向所述第一封装层的一侧，所述第一连接柱与所述第二连接柱连接；所述封装结构还包括连接层，所述连接层连接于所述第一封装层与所述第二封装层之间，并连接所述第一连接柱与所述第二连接柱。
一些实施例中，所述连接层可以为焊料或者导电胶。通过连接层将第一封装体与第二封装体固定连接在一起，相较于通过封装层直接将第一封装体与第二封装体封装为一体的方式来说，更容易将第一封装体与第二封装体拆开。一些情况下，当需要得到另一种结构的封装结构时，可以仅通过更换与第一封装体连接的第二封装体的类型(或更换与第二封装体连接的第一封装体)即能够得到新的封装结构，从而能够快速方便的得到新的封装结构，并能够循环利用第一封装体或者第二封装体，避免资源浪费。
一些实施例中，所述连接层包括多个间隔设置的子连接块，所述第一连接柱及所述第二连接柱均为多个，至少部分所述第一连接柱与至少部分所述第二连接柱相对设置，所述子连接块连接于相对的所述第一连接柱与所述第二连接柱之间，所述子连接块采用导热导电材料形成。
一些实施例中，当连接层为焊料时，多个子连接块可以为多个间隔设置的焊点；当连接层为导电胶时，多个子连接块可以为多个间隔设置的胶滴。
本实施例中，通过间隔设置的子连接块实现第一封装体与第二封装体的固定连接以及电连接，使得封装结构需要更换第一封装体或第二封装体时能够更简单。并且，能够减少连接层的材料的使用，减少生产成本。可以理解的是，一些实施例中，也可以将连接层的材料填充于第一封装体与第二封装体之间，即连接层的各子连接块之间连接为一体，实现更稳定的连接效果，并能够避免第一封装体与第二封装体之间的空隙，增强封装结构厚度方向上的强度。
一些实施例中，所述第二散热块的背离第二基板的表面露出所述第二封装层，所述第一散热块的背离第一基板的表面露出所述第一封装层，所述连接层还包括导热块，所述导热块连接于所述第一散热块露出所述第一封装层的表面与所述第二散热块露出所述第二封装层的表面之间。
本申请实施例中，导热块连接第一散热块以及第二散热块之间，用于实现第二散热块与第二封装体之间的热量传递，提高第一封装体以及第二封装体之间的热量的传输速度，提高封装结构内的均热效率。并且，第一散热块露出第一封装材料层的表面与第二散热块露出第二封装材料层的表面之间设有导热块，即为在第一封装体以及第二封装体之间增加导热块，从而能够进一步的提高第一封装体以及第二封装体之间的连接固定强度。
一些实施例中，所述第二散热块的背离第二基板的表面露出所述第二封装层，所述第一散热块的背离第一基板的表面露出所述第一封装层，所述第一散热块露出所述第一封装层的表面与所述第二散热块露出所述第二封装层的表面相接触，且所述第一散热块与所述第二散热块形成一体结构。
本申请实施例中，第一连接柱露出第一封装材料层的表面与第二连接柱露出第二封装材料层的表面接触，并通过第一连接柱与第二连接柱之间的分子间作用力实现固定，并能够使得所述第一散热块与所述第二散热块形成一体结构。
一些实施例中，所述第二封装体还包括第三封装层，所述第三封装层封装于所述第二基板背离所述第二封装层的一面，所述第三封装层包括第三封装材料层以及内嵌于所述第三封装材料层内的一个或者多个第三元器件，每个所述第三元器件均与所述第二基板连接。
本申请实施例中，通过在第二基板背离第二封装层的一面封装第三封装层，即第二基板的相对两面均设置封装层，从而增加封装结构的厚度方向堆叠的元器件的数量，减小封装结构应用于电子装置内的占用面积的同时增加封装结构内的元器件的数量，从而便于实现电子装置的小型化以及多功能化。
一些实施例中，所述第三封装层还包括内嵌于所述第三封装材料层内的多个第三连接柱以及一个或者多个第三散热块；每个所述第三连接柱的一端均连接至所述第二基板，另一端均延伸至所述第三封装材料层背离所述第二基板的表面，每个所述第三散热块与至少一个所述第三连接柱连接，且每个所述第三散热块连接一个或多个所述第三元器件。
本申请实施例中，第三元器件产生的部分热量能够直接传输至第二基板，部分热量能够依次经第三散热块、第三连接柱传输至第二基板，增加第三元器件的热量传输途径，从而能够较快速的将第三元器件工作产生的热量传输至封装结构的其它位置，避免热量集中。并且，第二基板产生的热量能够依次经过第二连接柱、第一连接柱传输至第一基板，并通过第一基板的外接引脚传输至封装结构外界，从而实现散热。可以理解的是，第二封装层内的第二元器件以及第一封装层内的第一元器件产生的热量也能够传输至第三封装层，以实现封装结构内的均热，避免封装结构内某个位置的热量聚集，避免封装结构因为热量聚集而造成的损坏。
一些实施例中，所述第二基板包括走线层以及覆盖于所述走线层背离所述第二封装层一侧的绝缘层，所述第二元器件与所述走线层电连接；所述绝缘层部分位置镂空，以露出部分所述走线层；所述第二基板背离所述第二封装层的一面覆盖有导热胶层，所述导热胶层与露出的部分所述走线层接触，所述导热胶层用于传输热量。
本申请实施例中，由于导热胶层通过绝缘层镂空的位置与第二基板的走线层接触，使得传输至第二基板的热量能够快速的通过导热胶层导出，增强封装结构的散热效果。一些实施例中，所述导热胶层背离所述第二封装层的一面设有离型膜。将封装结构固定于电子设备的其它结构上时，直接将离型膜撕除即可将导热胶层粘贴于其它结构上，操作简单方便。
一些实施例中，所述第一元器件包括正装芯片，所述正装芯片的背离所述第一基板的表面层叠有金属片，所述第一散热块连接至所述金属片；或所述第二元器件包括正装芯片，所述正装芯片的背离所述第二基板的表面层叠有金属片，所述第二散热块连接至所述金属片。一些实施例中，所述第一元器件包括正装芯片，所述正装芯片的背离所述第一基板的表面层叠有金属片，所述第一散热块连接至所述金属片；并且，所述第二元器件包括正装芯片，所述正装芯片的背离所述第二基板的表面层叠有金属片，所述第二散热块连接至所述金属片。
第一封装体中的正装芯片(即通过正装方式连接于基板上的芯片)背离第一基板的表面层叠有金属片，第一散热块连接至金属片，从而避免在第一封装材料层上激光开孔并形成第一散热块时对正装芯片的损伤。同样的，第二封装体中的正装芯片(即通过正装方式连接于基板上的芯片)背离第二基板的表面层叠有金属片，第二散热块连接至金属片，从而避免在第二封装材料层上激光开孔并形成第二散热块时对正装芯片的损伤。
一些实施例中，金属片的形成材料可以与第一散热块及第二散热块相同，使得金属片能够与第一散热块及第二散热块形成一体结构，避免增加接触界面，从而增强导热效果。
一些实施例中，所述第一基板内的所述第一元器件为多个，多个所述第一元器件中至少两个所述第一元器件在所述第一封装体的厚度方向上堆叠设置；或所述第二基板内的所述第二元器件为多个，多个所述第二元器件中至少两个所述第二元器件在所述第二封装体的厚度方向上堆叠设置。一些实施例中，所述第一基板内的所述第一元器件为多个，多个所述第一元器件中至少两个所述第一元器件在所述第一封装体的厚度方向上堆叠设置；并且，所述第二基板内的所述第二元器件为多个，多个所述第二元器件中至少两个所述第二元器件在所述第二封装体的厚度方向上堆叠设置。
本申请实施例中，通过将第一封装层内的部分第一元器件在封装结构的厚度方向上堆叠设置，使得元器件在封装结构的厚度方向上堆叠设置，从而提高封装结构内的元器件的密度。当在第一封装层内封装相同数量的第一元器件时，由于部分第一元器件在封装结构的厚度方向上堆叠，相较于将第一元器件均直接连接于第一基板上的封装结构来说，能够减少第一基板的大小，减小封装结构的占用面积。
第二方面，本申请还提供一种电子装置，所述电子装置包括功能模块以及所述的封装结构，所述功能模块与所述封装结构之间电连接。由于所述封装结构具有良好的散热效果，避免封装结构内热量集中而造成的损坏，使得封装结构能够具有较长的使用寿命，进而能够保证电子装置的使用寿命。
一些实施例中，所述电子装置包括主板，所述封装结构及所述功能模块固定于所述主板上并与所述主板电连接；所述封装结构的第一基板相对所述第一封装层靠近所述主板，并通过所述外接引脚与所述主板电连接。
本申请实施例中，封装结构通过主板的线路与各个功能模块连接，实现封装结构与设于主板上的各个功能模块之间的电连接。并且，由于封装结构以及部分或者全部的功能模块通过主板进行电连接，使得封装结构产生的热量至少部分能够通过主板传输至与主板相连接或者接触的功能模块或电子设备的其它结构上，从而避免热量聚集在封装结构中，导致封装结构过热而受到损坏。
一些实施例中，所述电子装置包括中框，所述中框与所述主板相对设置，所述封装结构位于所述中框与所述主板之间并连接所述中框及所述主板；所述封装结构的第二封装体与背离所述第一基板的一面与所述中框连接，所述中框用于散热。
本申请实施例中，封装结构设于主板与中框之间并与主板与中框接触，以使得封装结构产生的热量部分传输至主板，部分传输至中框以散出。一些实施例中，封装结构与主板以及中框均固定连接，保持封装结构在电子装置内的稳定。
一些实施例中，所述电子设备为手机，所述功能模块包括天线模块、传感器模块、音频模块、摄像模块、连接器模块、电源模块中的一种或者几种，封装结构与各功能模块进行电连接，从而通过封装结构内的元器件控制天线模块、音频模块、传感器模块、摄像模块500进行工作，使得电子装置实现各种功能。
附图说明
为了更清楚地说明本申请或背景技术中的技术方案，下面将对本申请或背景技术中所需要使用的附图进行说明。
图1为本申请一实施例的电子装置的结构示意图；
图2为图1所示电子装置的部分结构的截面示意图；
图3为本申请一实施例的封装结构的截面结构示意图；
图4为图3所示实施例的封装结构的第一封装体的透视图；
图5为本申请另一些实施例的封装结构的第一封装体的透视图；
图6为本申请另一实施例的封装结构的截面结构示意图；
图7为本申请另一实施例的封装结构的截面结构示意图；
图8为本申请另一实施例的封装结构的截面结构示意图；
图9为本申请另一实施例的封装结构的截面结构示意图；
图10为本申请另一实施例的封装结构的截面结构示意图；
图11为本申请另一实施例的封装结构的截面结构示意图；
图12为本申请另一实施例的封装结构的截面结构示意图；
图13为图12所示实施例的封装结构设于电子装置中的部分截面示意图；
图14为本申请另一实施例的封装结构的截面结构示意图；
图15为本申请另一实施例的封装结构的截面结构示意图；
图16为本申请另一实施例的封装结构的截面结构示意图；
图17为本申请另一实施例的封装结构的截面结构示意图；
图18为图3所示实施例的封装结构的制备过程流程图；
图19a至图19k为图18中各步骤中封装结构的截面结构示意图。
具体实施方式
下面将结合本申请一些实施例中的附图，对本申请一些实施例中的技术方案进行描述。
需要说明的是，本申请中所说的“A和/或B”包括“A”或“B”或“A和B”三种情况。
本申请涉及一种封装结构、封装方法及包括封装结构的电子装置。电子装置可以为手机、平板电脑、穿戴手表、路由器等电子产品。其中，封装结构可以将有源器件和/或无源器件等元器件集成在一个封装内。其中，有源器件可以为将各种芯片等元器件，无源器件可以为电容、电感、电阻等元器件。本申请实施例中，将封装结构与电子装置的功能模块进行电连接，从而通过封装结构内部的有源元件及无源元件的配合工作控制电子装置的功能模块进行工作。
例如，请参阅图1，图1为本申请一实施例的电子装置1000的结构示意图。电子装置中包括封装结构100以及与封装结构100电连接的至少一个功能模块。封装结构100内封装有能够控制各功能模块进行工作的元器件，以通过封装结构100内封装的元器件控制各功能模块工作，以实现电子装置的各个功能。封装结构100内的元器件包括处理器、存储器等有源器件以及电容元件、电感元件、电阻元件等无源器件。
本实施中，电子装置1000为手机。手机的功能模块包括天线模块200、音频模块300、传感器模块400、摄像模块500、连接器模块600及电源模块700等，以通过手机中的各功能模块实现手机的各种功能。一些实施例中，封装结构100内封装有天线模块处理芯片、音频模块处理芯片、传感器模块处理芯片以及摄像头模块处理芯片，因此，将封装结构100与天线模块200、音频模块300、传感器模块400、摄像模块500均进行电连接，从而通过封装结构100内的元器件控制天线模块200、音频模块300、传感器模块400、摄像 模块500进行工作，使得电子装置1000实现各种功能。可以理解的是，电子装置1000为其它设备时，电子装置1000能够包括其它类型的功能模块，封装结构100内也相应的封装其它类型的元器件，以将各功能模块与封装结构100进行电连接，从而实现电子装置1000的各功能。
本申请实施例中，封装结构100内封装的元器件的数量可以根据需要进行增减。例如，一些实施例中，还可以在封装结构100中增加电源模块处理芯片以及连接器模块处理芯片，并将封装结构100与连接器模块600及电源模块700电连接，从而通过扩展封装结构100的功能。
请参阅图2，图2所示为本申请一些实施例的电子装置1000的部分结构的截面示意图。一些实施例中，电子装置1000还可以包括主板800，封装结构100、部分或全部功能模块设于主板800上。一些实施例中，主板800为印刷线路板(printed circuit board，PCB)，封装结构100通过主板800的线路与各个功能模块连接，实现封装结构100与设于主板800上的各个功能模块之间的电连接。并且，由于封装结构100以及部分或者全部的功能模块通过主板800进行电连接，使得封装结构100产生的热量至少部分能够通过主板800传输至与主板800相连接或者接触的功能模块或电子设备1000的其它结构上，从而避免热量聚集在封装结构100中，导致封装结构100过热而受到损坏。例如，图2所示实施例中示出了将封装结构100与连接器模块600设于主板800上的情况，当封装结构100发热量较大，连接器模块600的热量较低时，封装结构100的热量能够通过主板800传输至连接器模块600的位置，从而避免热量在封装结构100位置聚集而导致封装结构100过热而受到损坏。
一些实施例中，电子装置1000还包括中框900，中框900与主板800相对设置，封装结构100连接于中框900与主板800。中框900能够用于散热。封装结构100设于主板800与中框900之间并与主板800与中框900接触，以使得封装结构100产生的热量部分传输至主板800，部分传输至中框900以散出。一些实施例中，封装结构100与主板800以及中框900均固定连接，保持封装结构100在电子装置1000内的稳定。
请参阅图3，图3所示为本申请一实施例的封装结构100的结构示意图。封装结构100包括第一封装体10及堆叠于第一封装体10上的第二封装体20。第一封装体10与第二封装体20之间设有连接层30。连接层30为导电导热材料制成，即连接层30既能够进行导电，也能够进行导热。通过连接层30实现第一封装体10与第二封装体20的电连接，使得第一封装体10与第二封装体20之间能够进行通信。并且，由于连接层30具有导热功能，通过连接层30还能够使得第一封装体10与第二封装体20之间的热量进行相互传输，避免热量在第一封装体10或者第二封装体20上聚集。
本实施例中，连接层30可以为焊料或者导电胶，具有良好的导热及导电性能，并能够将第一封装体10与第二封装体20固定连接在一起。
本申请实施例中，通过连接层30将第一封装体10与第二封装体20固定连接在一起，相较于通过封装层直接将第一封装体10与第二封装体20封装为一体的方式来说，更容易将第一封装体10与第二封装体20拆开。一些情况下，当需要得到另一种结构的封装结构100时，可以仅通过更换与第一封装体10连接的第二封装体20的类型(或更换与第二封装体20连接的第一封装体10)即能够得到新的封装结构100，从而能够快速方便的得到新的封装结构100，并能够循环利用第一封装体10或者第二封装体20，避免资源浪费。 例如，一些实施例的第一封装体10内封装有天线模块处理芯片、音频模块处理芯片，第二封装体20内封装有传感器模块处理芯片以及摄像头模块处理芯片。当需要得到一种封装有天线模块处理芯片、音频模块处理芯片以及电源模块处理芯片以及连接器模块处理芯片的封装结构100时，仅需要将封装有电源模块处理芯片以及连接器模块处理芯片的第二封装体20替换封装有传感器模块处理芯片以及摄像头模块处理芯片的第二封装体20，从而得到所需的封装结构100。
本申请一些实施例中，第一封装体10朝向第二封装体20的表面具有多个第一连接端子10a，第二封装体20朝向第一封装体10的表面具有多个第二连接端子20a，通过至少部分的第一连接端子10a与至少部分的第二连接端子20a的电连接实现第一封装体10与第二封装体20的电连接。一些实施例中，至少部分第一连接端子10a与至少部分第二连接端子20a相对设置。本实施例中，连接层30包括多个间隔设置的子连接块31，每个子连接块31连接于相对设置的第一连接端子10a与第二连接端子20a之间，从而实现第一封装体10与第二封装体20的电连接。其中，第二连接端子20a在第一封装体10朝向第二封装体20的表面上的正投影与同其相对设置的第一连接端子10a至少部分重合。
本申请实施例中，当连接层30为焊料时，多个子连接块31可以为多个间隔设置的焊点；当连接层30为导电胶时，多个子连接块31可以为多个间隔设置的胶滴。
本实施例中，通过间隔设置的子连接块31实现第一封装体10与第二封装体20的固定连接以及电连接，使得封装结构100需要更换第一封装体10或第二封装体20时能够更简单。并且，能够减少连接层30的材料的使用，减少生产成本。可以理解的是，一些实施例中，也可以将连接层30的材料填充于第一封装体10与第二封装体20之间，即连接层30的各子连接块之间连接为一体，实现更稳定的连接效果，并能够避免第一封装体10与第二封装体20之间的空隙，增强封装结构100厚度方向上的强度。
第一封装体10包括第一基板11以及封装于第一基板11上的第一封装层12。其中，第一基板11为线路板，包括相对的两层绝缘层111以及设于两层绝缘层111之间的至少一层走线层112。走线层112为多层时，第一基板11还包括设于相邻的两层走线层112之间的信号互联层113。信号互联层113包括绝缘材料层1131以及穿设于绝缘材料层1131内的连接线1132。绝缘材料层1131将相邻两层走线层112间隔并绝缘，内嵌于绝缘材料层1131内的连接线1132连接相邻的走线层112，使得多层走线层112之间能够进行通信。本实施例中，走线层112为两层。可以理解的是，走线层112的数量可以为更多层。
一些实施例中，绝缘层111只有一层。具体的，靠近第一封装层12一侧的绝缘层111可以没有，第一封装层12直接封装于第一基板11的走线层112上。
本实施例中，绝缘层111背离走线层112的表面还设有与走线层112连接的焊垫，焊垫用于实现元器件等结构与第一基板11的走线层112的连接。
第一基板11背离第一封装层12的一面设有外接引脚13，外接引脚13用于与封装结构100的外接结构进行电连接。其中，封装结构100的外接结构即为封装结构以外并与封装结构电连接的其它结构、模组或者元器件。外接引脚13与走线层112进行连接，从而实现第一基板11与封装结构100的外接结构(如电子装置1000的各功能模组)电连接，使得封装结构100内与第一基板11电连接的结构与封装结构100的外接结构电连接。
封装结构100设于主板800上时，第一基板11通过外接引脚13与主板800连接。与主板800电连接的某个工作模块产生的信号依次经过主板800、外接引脚13传输至封装 结构100内；或者，封装结构100内处理产生的信号依次经过第一基板11、外接引脚12、主板800至工作模块，从而实现封装结构100与工作模块之间的通信。并且，封装结构100中元器件工作产生的热量部分可以经过第一基板11传输至主板800上，并通过主板800将封装结构100内元器件工作产生的热量散出或传输至电子设备1000内的其它结构或者工作模组，避免热量在封装结构100位置聚集，避免封装结构100热量过高而造成的损坏。
第一封装层12包括第一封装材料层121以及内嵌于第一封装材料层121中的一个或多个第一元器件122、多个第一连接柱123及一个或者多个第一散热块124。第一元器件122为封装结构100内的元器件，可以为芯片等有源器件，也可以为电容、电感、电阻等无源器件。每个第一元器件122均与第一基板11电连接。其中，第一元器件122可以与第一基板11直接连接，也可以为通过其它结构与第一基板11进行间接连接。
本实施例中，第一元器件122设于第一基板11上，且第一元器件122的引脚1211连接至第一基板11的焊垫，从而实现第一元器件122与第一基板11的直接连接。第一元器件122可以为一个或者多个。当第一元器件122为多个时，由于多个第一元器件122均设于第一基板11上并与第一基板11电连接，使得各个第一元器件122之间能够通过第一基板11的走线层112进行通信。通过设计第一基板11的走线层112的走线，可以根据将与第一基板11电连接的第一元器件122进行连接。
本申请实施例中，第一元器件122可以通过贴片或者键合等方式与第一基板11进行电连接。
本申请一些实施例中，第一元器件122为芯片时，芯片可以通过正装或者倒装的方式连接于第一基板11上。例如，图3所示实施例中第一封装层12内包括两个第一元器件122，两个第一元器件122均为芯片。其中一个第一元器件122通过倒装的方式与第一基板11连接，即第一元器件122的引脚位于第一元器件121朝向第一基板11的一侧，第一元器件122的引脚直接与第一基板11上的焊垫进行连接，以实现第一元器件122与第一基板11的电连接。另一第一元器件122通过正装的方式与第一基板11连接，即第一元器件122的引脚位于第一元器件122背离第一基板11的一侧，引脚通过键合线1221键合连接至第一基板11上的焊垫，从而实现第一元器件122与第一基板11的电连接。
一些实施例中，正装芯片(即通过正装方式连接于基板上的芯片)背离第一基板11的表面层叠有金属片，第一散热块124连接至金属片，从而避免在第一封装材料层121上激光开孔并形成第一散热块124时对正装芯片的损伤。金属片的形成材料可以与第一散热块124相同或者不同。本实施例中，金属片的形成材料与第一散热块124相同并与一散热块124形成一体结构，避免增加接触界面，从而增强导热效果。
每个第一连接柱123一端均连接第一基板11，另一端延伸至第一封装材料层121背离第一基板11的表面并与第二封装体20连接。本实施例中，第一连接柱123延伸至第一封装材料层121背离第一基板11的表面的端面为第一封装体10的第一连接端子10a。具体的，第一连接柱123通过导电胶或者焊料固定于第一基板11上，并通过导电胶或者焊垫与第一基板11进行电连接。本申请实施例中，第一连接柱123与第一散热块124均为导电导热材料制成，即第一连接柱123及第一散热块124均具有较高的导热系数(导热系数大于10W/m·K)，能够导热，且第一连接柱123及第一散热块124也能够进行导电。本申请一些实施例中，第一连接柱123及第一散热块124为金、银、铜、铝等金属材料制成。 第一连接柱123与第二散热块的材料可以相同也可以不同。本实施例中，第一连接柱123与第一散热块124均为金属铜形成，且第一连接柱123及第一散热块124成型为一体结构。可以理解的是，一些实施例中，第一连接柱123和/或第一散热块124也可以为其它的非金属导电材料制成，或者以下实施例中，第一连接柱123和/或第一散热块124可以为热管，从而实现更加良好的导热效果。
每个第一散热块124均与至少一个第一连接柱123连接，且每个第一散热块124均连接一个或多个第一元器件122，使得至少部分第一元器件122工作产生的热量能够通过第一散热块124传输至第一连接柱123。本实施例中，第一元器件122与第一散热块124的数量相同，均为两个，每个第一散热块124对应于一个第一元器件122，并与对应的第一元器件122连接。可以理解的是，一些实施例中，第一元器件122的数量可以多于第一散热块124的数量，只有部分第一元器件122与第一散热块124连接。例如，一些实施例中，多个第一元器件122中有部分有源器件以及部分无源器件，由于有源器件工作时常比无源器件工作时的发热高，可以仅将有源器件与第一散热块124连接，以增强有源器件的散热效果。图3中箭头所示为封装结构100内热量的传输路径。本实施例中，由于第一元器件122均设于第一基板11上并与第一基板11直接连接，因此，第一元器件122的部分热量直接传输至第一基板11，通过第一基板11传输至封装结构100的外部。另外，第一基板11还与第一散热块124连接，第一元器件122的部分热量还可以通过第一散热块124经第一连接柱123传输至第一基板11，并通过第一基板11传输至封装结构100的外部。本实施例中，由于第一基板11通过外接引脚13与主板800连接，因此，传输至第一基板11的热量均能够传输至主板800。本实施例中，每个第一元器件122有对应的第一散热块124与其连接，使得每个第一元器件122均能够通过第一散热块124散热。可以理解的是，一些实施例中，可以只有部分第一元器件122与第一散热块124连接，使得只有部分第一元器件122能够通过第一散热块124散热。例如，当一个第一元器件122发热量较大，另一个第一元器件122发热量较小时，可以仅设置一第一散热块124与发热量较大的第一元器件122连接，保证散热效果的同时，减少第一散热块124的数量，节约成本。
本申请实施例中，由于第一连接柱123与第一基板11连接，第一散热块124连接第一元器件122以及第一连接柱123，因此第一元器件122产生的热量部分能够经过第一散热块124及第一连接柱123传输至第一基板11。相对于没有第一连接柱123以及第一散热块124的封装结构来说，本申请实施例的封装结构100通过增加第一散热块124及第一连接柱123，能够增加第一元器件122产生的热量的传输路径，提高封装结构100的散热能力。
可以理解的是，一些实施例中，由于第一元器件122工作产生的热量不高，或者由于第一元器件122直接与第一基板10连接，热量大部分能够直接传输第一基板10，散热效率较高，因此，所述第一封装层12也可以没有所述第一散热块124。
本实施例中，由于第一连接柱123以及第一散热块124均为金属材料制成，相对于第一封装材料层121来说具有较高的强度。并且，为了实现较好的导热效果，第一连接柱123以及第一散热块124在第一封装体10内的所占的体积较大。例如，本申请一些实施例中，第一连接柱123的直径为200μm以上，以实现更好的导热效果。因此，本实施例中，在第一封装材料层121内嵌入第一散热块124、第一连接柱123连接形成的框架架构还能够增强第一封装体10的强度。
由于第一散热块124及第一连接柱123均能够导电，且第一连接柱123与第一基板11连接，因此，一些实施例中，可以通过第一基板11向第一连接柱123输入信号，信号能够通过第一连接柱123以及第一散热块124传输至第一元器件122；或者，第一元器件122产生的信号能够通过第一连接柱123、第一散热块124传输至第一基板11，并通过第一基板11与外界进行通信。即第一连接柱123以及第一散热块124还能够起到信号传输作用，增加封装结构100内的信号传输路径，实现信号的再分配等作用。本实施例中，第一基板11通过外接引脚13与封装结构100的外接结构进行电连接，从而实现封装结构100内外的信号连通。
可以理解的是，根据输入第一连接柱123以及第一散热块124的信号不同，第一连接柱123以及第一散热块124连接形成的结构起到的作用不同。例如，一些实施例中，外接引脚13与电源模块电连接，即第一连接柱123输入的为电源信号，从而使得第一连接柱123以及第一散热块124连接形成的结构能够作为封装结构100的电源网络，并能够通过该电源网络为第一封装层12内与各散热块连接的各元器件供电。或者，一些实施例中，可以将与第一连接柱123连接的外接引脚13接地，封装结构100内的地回流能够从第一元器件122依次通过第一散热块124、第一连接柱123、第一基板11的连接线、外接引脚13至地，由此形成了一个低阻抗的地网络通路，此通路能够形成一个良好的法拉第电磁屏蔽体。
第一连接柱123以及第一散热块124连接形成的结构起到的作用不同时，第一连接柱123以及第一散热块124连接形成的结构以及在封装结构100内的位置均可以不同。本实施例中，第一散热块124位于第一元器件122背离第一基板11的一面，第一连接柱123相对第一元器件122靠近第一封装体10的边缘，第一散热块124与第一连接柱123相连形成罩设于第一元器件122背离第一基板11一面的框架结构，框架结构能够增强封装结构100内部的强度，避免封装结构100受到外界的力的作用而产生的损坏。当第一连接柱123通过外接引脚13接地，框架结构形成法拉第电磁屏蔽体时，能够很好的隔离封装结构100内第一元器件122与封装结构100内其它结构之间的电磁干扰，以及封装结构100外部环境对封装结构100内的第一元器件122的电磁干扰。
可以理解的是，本申请的其它一些实施例中，第一连接柱123可以部分相对第一元器件122靠近第一封装体10的边缘，还可以部分设置于第一基板11的其它任意位置。例如，第一连接柱123可以设置于位于第一基板11上相邻的第一元器件122之间。通过增加封装结构100内连接至第一基板11的第一连接柱123的数量，能够增加第一元器件122的热量传输至第一基板11上的通道，提高第一元器件122的热量导出效率。并且，能够增加第一封装层12内的第一连接柱123的占据的体积，增强封装结构100的强度。
请参阅图4，图4为图3所示实施例的封装结构100的第一封装体10的透视图。本实施例中，与各个第一元器件122连接的第一散热块124连接为一体，第一连接柱123均与第一散热块124连接。一些情况下，也可以认为图4所示实施例仅有一个第一散热块124，所有的第一元器件122均与同一个第一散热块124连接。换句话说，本实施例重的第一封装体10的第一散热块124以及第一连接柱123均连接为一体的框架。本实施例中，第一散热块124以及第一连接柱123均连接为一体的框架，当至少一根第一连接柱123接地时，第一散热块124以及第一连接柱123形成的一体的框架形成法拉第电磁屏蔽体，能够很好的隔离封装结构100内第一元器件122与封装结构100内其它结构之间的电磁干扰，以及 封装结构100外部环境对封装结构100内的第一元器件122的电磁干扰。并且，由于各第一散热块124之间不需要预留间隙，使得第一散热块124以及第一连接柱123在第一封装体10内占据的体积能够较大，实现更好的热量传导效果以及强度增强效果。
请参阅图5，图5所示为本申请另一些实施例的封装结构100的第一封装体10的透视图。本实施例，第一连接柱123与第一散热块124能够起到为第一元器件提供信号的作用，为了保证信号传输的方向性。与不同的第一元器件122连接的第一散热块124间隔设置，且连接至不同的第一散热块124的第一连接柱123之间也间隔设置。本实施例中，第一元器件122为两个，分别为第一元器件122a以及第一元器件122b。第一散热块124也有两个，分别为第一散热块124a以及第一散热块124b。其中，第一散热块124a与第一元器件122a连接，第一散热块124b与第一元器件122b连接。第一散热块124a与第一散热块124b间隔设置。一些实施例中，与第一散热块124a连接的第一连接柱123以及与第一散热块124a连接的第一连接柱123通过第一基板11上的走线层112连接至不同的外接引脚13，不同的外接引脚13输入不同的信号，与第一散热块124a连接的第一连接柱123输入以及与第一散热块124a连接的第一连接柱123分别输入不同的信号，从而为第一元器件122a以及第一元器件122b分别输入不同的信号。
请重新参阅图3，本实施例中，第二封装体20的结构与第一封装体10的结构类似，包括第二基板21以及封装于第二基板21上的第二封装层22。第二封装层22位于第二基板21朝向第一封装层12的一侧。
第二基板21为线路板，包括相对的两层绝缘层211以及设于两层绝缘层211之间的至少一层走线层212。走线层212为多层时，第二基板21还包括设于相邻的两层走线层212之间的信号互联层213。信号互联层213包括绝缘材料层2131以及穿设于绝缘材料层2131内的连接线2132。绝缘材料层2131将相邻两层走线层212间隔并绝缘，内嵌于绝缘材料层2131内的连接线2132连接相邻的走线层212，使得多层走线层212之间能够进行通信。本实施例中，走线层212为两层。可以理解的是，走线层212的数量可以为更多层。
一些实施例中，第二基板21也可以仅包括一层绝缘层。具体的，第二基板21朝向第二封装层22一侧的绝缘层没有，使得第二封装层22直接封装于第二基板21的走线层212上。
本实施例中，绝缘层211背离走线层212的表面还设有与走线层212连接的焊垫，焊垫用于实现元器件等结构与第二基板21的走线层212的连接。
第二封装层22包括第二封装材料层221以及内嵌于第二封装材料层221中的一个或者多个第二元器件222、多个第二连接柱223及一个或者多个第二散热块224。第二元器件222可以为芯片等有源器件，也可以为电容、电感、电阻等无源器件。每个第二元器件222与第二基板21连接。其中，第二元器件222可以与第二基板直接连接，也可以为通过其它结构与第二基板21进行间接连接。
一些实施例中，第二元器件222可以为芯片，芯片也可以通过正装或者倒装的方式与第二基板21连接。正装芯片(即通过正装方式连接于基板上的芯片)背离第二基板12的表面层叠有金属片，第二散热块224连接至金属片，从而避免在第二封装材料层221上激光开孔并形成第二散热块224时对正装芯片的损伤。金属片的形成材料可以与第二散热块224相同或者不同。本实施例中，金属片的形成材料与第二散热块224相同并连接为一体结构，避免增加接触界面，从而增强导热效果。
本实施例中，第二元器件222设于第二基板21上，且第二元器件222的引脚连接至第二基板21的焊垫，从而实现第二元器件222与第二基板21的直接连接。第二元器件222可以为一个或者多个，当第二元器件222为多个时，由于多个第二元器件222均设于第二基板21上并与第二基板21的焊垫连接，焊垫又连接至第二基板21的走线层212，则多个第二元器件222之间可以通过第二基板21的走线层212进行电连接，各个第二元器件222之间能够通过第二基板21的走线层212进行通信。本申请实施例中，第二元器件222可以通过贴片或者键合等方式与第二基板21进行电连接。本申请实施例中，第二元器件222为芯片时，芯片也可以通过正装或者倒装的方式连接于第一基板11上。
每个第二连接柱223一端均连接第二基板21，另一端延伸至第二封装材料层221背离第二基板21的表面并与第二封装体20连接。本实施例中，第二连接柱223延伸至第二封装材料层221背离第二基板21的表面的端面为第二封装体20的第二连接端子20a。
第二连接柱223与第二散热块224为均为导电导热材料制成，即第二连接柱223及第二散热块224均具有较高的导热系数(导热系数大于10W/m·K)，能够导热，且第二连接柱223及第二散热块224也能够进行导电。一些实施例中，第二连接柱223及第二散热块224可以为金、银、铜、铝等金属材料制成。第二连接柱223与第二散热块224的材料可以相同也可以不同。本实施例中，第二连接柱223与第二散热块224均为金属铜形成，且第二连接柱223及第二散热块224成型为一体结构。一些实施例中，第二连接柱223和/或第二散热块224也可以为其它的非金属导电材料制成，或者以下实施例中，第二连接柱223和/或第二散热块224可以为热管，从而实现更加良好的导热效果。
本实施例中，至少部分第一连接端子10a与至少部分第二连接端子20a相对设置，即至少部分第一连接柱123与至少部分第二连接柱223相对设置。子连接块31连接于相对设置的第一连接端子10a与第二连接端子20a之间，即子连接块31连接于相对设置的第一连接柱123与第二连接柱223之间。其中，至少部分第一连接柱123与至少部分第二连接柱223相对设置是指：至少部分第一连接柱123与至少部分第二连接柱223在第一基板11朝向第一封装层12表面的正投影部分重合或者完全重合。本实施例中，相对设置的第一连接柱123以及第二连接柱223在第一基板11朝向第一封装层12表面的正投影均完全重合，使得封装结构100受到厚度方向上的压力时，由于第一连接柱123以及第二连接柱223的高度方向均与封装结构100的厚度方向相同，且第一连接柱123与第二连接柱223对应于第一基板11上的同一位置，从而能够实现更好的支撑效果，避免封装结构100受到厚度方向上的压力而造成的损坏。并且，热量从第一连接柱123传输至第二连接柱223的热量传输路径最短，从而实现高效的热量传递。
每个第二散热块224均与至少一个第二连接柱223连接，且每个第二散热块224连接一个或多个第二元器件222，使得至少部分第二元器件222的热量能够通过第二散热块224将传输至第二连接柱223。本实施例中，第二元器件222的数量多于第二散热块224的数量，只有部分第二元器件222与第二散热块224连接。本实施例中，多个第二元器件222中包括两个有源器件以及一个无源器件，由于有源器件工作时常比无源器件工作时的发热高，仅将有源器件与第二散热块224连接，以增强有源器件的散热效果。可以理解的是，一些实施例中，第二散热块224的数量可以与第二元器件222的数量相同，每个第二元器件222均有对应的第二散热块224与其连接，以通过第二散热块224将第二元器件222的至少部分热量导出。
本实施例中，由于第二元器件222均设于第二基板21上并与第二基板21直接连接，因此第二元器件222的部分热量能够直接传输至第二基板21，通过第二基板21传输至封装结构100的外部。另外，第二基板21还与第二散热块224连接，第二元器件222的部分热量还可以通过第二散热块224经第二连接柱223传输至第二基板21，并通过第二基板21传输至封装结构100的外部。并且，第二元器件222的部分热量还可以通过第二连接柱223经过连接层30传输至第一连接柱123后，再传输至第一基板11。可以理解的是，一些实施例中，第一元器件122产生的部分热量也能够依次经过第一散热块124、第一连接柱123、连接层30、第二连接柱223传输至第二基板21上。本实施例中，第二封装层22内有三个第二元器件222，其中两个第二元器件222均与对应的第二散热块224连接。本实施例中，只有部分第二元器件222与第二散热块224连接，使得只有部分第二元器件222的热量能够部分通过第二散热块224散热。例如，当一个第二元器件222发热量较大，另一个第二元器件222发热量较小时，可以仅设置一第二散热块224与发热量较大的第二元器件222连接，保证散热效果的同时，减少第二散热块224的数量，节约成本。可以理解的是，一些实施例中，每个第二元器件222均与一个第二散热块224连接，使得每个第二元器件222的热量均能够部分通过第二散热块224散热，提高封装结构100的散热效率。
本实施例中，第一散热块124与第一连接柱123连接、第一连接柱123与第一基板11连接、第二散热块224与第二连接柱223连接、第二连接柱223与第二基板21连接，且第一连接柱123与第二连接柱223连接，从而使得第一散热块124、第一连接柱123、第二散热块224、第二连接柱223及第一基板11、第二基板21连接形成散热框架，能够增加第一元器件122以及第二元器件222的导热途径。相对于没有第一散热块124以及第二散热块224，第二元器件222的热量仅能先传输至第二基板21，再通过第二基板21传输至第一基板11的封装结构来说，本申请实施例的封装结构100的散热效率明显提高。并且，由于散热框架形成于第一封装体10以及第二封装体20内，使得第一封装体10内产生的热量能够通过散热框架传输至第二封装体20内，第二封装体20内产生的热量能够通过散热框架传输至第一封装体10内，即第一封装体10以及第二封装体20内的热量能够互相传输，从而能够实现第一封装体10以及第二封装体20之间的均热，避免热量在封装结构100内的某个位置进行集中，避免封装结构100内的元器件由于温度集中而产生的损坏。
需要说明的是，本申请实施例中，第一散热块124、第一连接柱123、第二散热块224、第二连接柱223及第一基板11、第二基板21连接形成散热框架除导热作用外，还能够起到其它的作用，并且，根据起到的作用不同，散热框架的结构也可能不相同。
本实施例中，散热框架起到散热的作用，因此，仅需保持第一散热块124连接第一元器件122以及第一连接柱123，第二散热块224连接第二元器件222以及第二连接柱223即可。其中，连接不同的第一元器件122的第一散热块124可以分离设置也可以相互连接；连接不同的第二元器件222的第二散热块224可以分离设置也可以相互连接。本实施例中，第一散热体10与图4所示的封装结构的第一封装体10相似，与不同的第一元器件122连接的第一散热块124连接为一体；第二散热体20与图5所示的封装结构的第一封装体10相似，与不同的第二元器件222连接的第二散热块224间隔设置。
本实施例中，由于第一散热块124、第一连接柱123、第二散热块224、第二连接柱223均为金属材料制成，相较于第一封装材料层121、第二封装材料层221来说强度较高， 因此，第一散热块124、第一连接柱123、第二散热块224、第二连接柱223形成的散热框架也能够作为封装结构100内的支撑框架，提高封装结构100的强度，避免封装结构100受到外界压力而受到的损坏。
本实施例中，第二散热块224位于第二元器件222背离第二基板21的一面，第二连接柱223相对第二元器件222靠近第二封装体20的边缘，第二散热块224与第二连接柱223相连形成罩设于第二元器件222背离第二基板21一面的框架结构，框架结构能够增强封装结构100内部的强度，避免封装结构100受到外界的力的作用而产生的损坏。
可以理解的是，本申请的其它一些实施例中，第二连接柱223可以部分相对第二元器件222靠近第一封装体10的边缘，还可以部分设置于第二基板21的其它任意位置。例如，第二连接柱223可以设置于位于第二基板21上相邻的第二元器件222之间。通过增加封装结构100内连接至第二基板21的第二连接柱223的数量，能够增加第二元器件222的热量传输至第二基板21上的通道，提高第二元器件222的热量导出效率。并且，能够增加第二封装层22内的第二连接柱223的占据的体积，增强封装结构100的强度。
请参阅图6，图6所示为本申请另一实施例的封装结构100的结构示意图。本实施例中，第一封装体10以及第二封装体20的结构与图4所示的第一封装体10的结构类似，即与不同的第二元器件222连接的第二散热块224连接为一体，即所有的第二散热块224连接为一体。并且，本实施例中，与第一散热块124连接的第一连接柱123至少部分与连接至第二散热块224的第二连接柱223电连接，从而使得第一散热块124、第一连接柱123与第二散热块224、第二连接柱223连接为一体。连接为一体的第一散热块124、第一连接柱123与第二散热块224、第二连接柱223中至少一个第一连接柱123或者至少一个第二连接柱223接地时，第一散热块124、第一连接柱123与第二散热块224、第二连接柱223能够形成法拉第电磁屏蔽体。具体的，至少一个第一连接柱123或者至少一个第二连接柱223接地，连接为一体的第一散热124能够与接地的第一连接柱123或接地的第二连接柱223电连接，从而使得连接为一体的第一散热块124接地。换句话说，连接为一体的第一散热块124能够直接与接地的第一连接柱123连接，使得连接为一体的第一散热块124能够接地；或者，连接为一体的第一散热块124能够通过连接层30与接地的第一连接柱123连接，使得连接为一体的第一散热块124能够接地。并且，连接为一体的第二散热块124能够与接地的第一连接柱123或接地的第二连接柱223电连接，从而使得连接为一体的第二散热块124接地。换句话说，连接为一体的第二散热块124能够直接与接地的第一连接柱123连接，使得连接为一体的第二散热块224能够接地；或者，连接为一体的第二散热块224能够通过连接层30与接地的第一连接柱123连接，使得连接为一体的第二散热块224能够接地。图6中箭头所示为封装结构100的功能系统产生的地回流从元器件返回供电端的方向示意图。本实施例中，第一基板11上的外接引脚13中至少两个外接引脚13接地，第一元器件122的返回的地信号可以经第一基板11的走线层112传输至接地的外接引脚13或者经第一散热块124以及第一接地柱123传输至接地的外接引脚13。第二元器件222的返回的地信号可以经第二基板11的走线层112或第二散热块224传输至第二连接柱223，再依次经过第二连接柱223、连接部30、第一连接柱123、第一基板11的走线层112传输至在接地的外接引脚13，使得第一散热块124、第一连接柱123与第二散热块224、第二连接柱223连接为一体的散热框架形成一个低阻抗的地网络通路，此通路能够形成一个良好的法拉第电磁屏蔽体。并且，本实施例中，第一散热块124位于 第一元器件122背离第一基板11的一面，第一连接柱123相对第一元器件122靠近第一封装体10的边缘，第一散热块124与第一连接柱123相连形成罩设于第一元器件122背离第一基板11一面的框架结构；第二散热块224位于第二元器件222背离第二基板21的一面，第二连接柱223相对第二元器件222靠近第二封装体20的边缘，第二散热块224与第二连接柱223相连形成罩设于第二元器件222背离第二基板21一面的框架结构。当第一连接柱123或者第二连接柱223通过外接引脚13接地时，框架结构形成法拉第电磁屏蔽体时，能够很好的隔离封装结构100内的第一元器件122与封装结构100内的第二元器件222，以及封装结构100外部环境对封装结构100内的第二元器件222的电磁干扰。
请参阅图7，图7所示为本申请另一实施例的封装结构100的结构示意图。本实施例中，第一封装体10以及第二封装体20的结构与图5所示的第一封装体10的结构类似，即第一元器件122、第一散热块124以及第一连接柱123均为多个，多个第一散热块124之间间隔设置，不同的第一散热块124连接的第一元器件122以及第一连接柱123不同。第二元器件222、第二散热块224以及第二连接柱223均为多个，多个第二散热块224之间间隔设置，不同的独立设置的第二散热块224连接的第二元器件222以及第二连接柱223不同。图7中箭头所示为封装结构100的功能系统产生的地回流从元器件返回供电端的方向示意图。本实施例中，第一基板11上与第一连接柱123连接的外接引脚13与电源模块电连接，即向第一连接柱123输入电源信号，输入第一连接柱123中的电源信号通过与第一连接柱123连接的第一散热块124传输至第一元器件122，从而为第一元器件122供电，并通过与第一连接柱123连接的第二连接柱223以及第二散热块224传输至第二元器件222，以为第二元器件222供电。换句话说，本实施例中，散热框架除起到散热以及支撑框架的作用外，还能够作为电源网络，为第一元器件122以及第二元器件222进行供电。
可以理解的是，一些实施例中，可以将与不同的第一元器件122连接的第一散热块124及第一连接柱123连接至不同的外接引脚13，与不同的第二元器件222连接的第二散热块224及第二连接柱223连接至不同的外接引脚13。不同的外接引脚13连接的外界模组不同，从而通过不同的第一散热块124及不同的第二散热块224为同其连接的元器件提供不同的信号。例如，部分外接引脚13与天线模块200电连接，以使得连接至该外接引脚13的第一元器件122或第二元器件222与天线模块200之间进行通信；部分外接引脚13与传感器模块400电连接，以使得连接至该外接引脚13的第一元器件122或第二元器件222与传感器模块400之间进行通信。本实施例中，通过第一连接柱123、第一散热块124以及第二连接柱223、第二散热块224在封装结构100内的设置，并通过第一连接柱123、第一散热块124为第一元器件122提供信号，通过第二连接柱223、第二散热块224为第二元器件222提供信号，增加封装结构100内的信号的传输路径，使得除通过基板实现信号分配至不同的第一元器件122或不同的第二元器件222外，还能够通过第一连接柱123、第一散热块124以及第二连接柱223、第二散热块224将信号分配至不同的第一元器件122或不同的第二元器件222，即通过第一连接柱123、第一散热块124以及第二连接柱223、第二散热块224也能够实现封装结构100内的信号再分配。
请参阅图8，图8所示为本申请的另一些实施例的封装结构的结构示意图。本实施例与图3所示实施例的差别在于：第二基板21背离第二封装层22的一面设有外接引脚23，外接引脚23用于与封装结构100的外接结构进行电连接。外接引脚23与走线层212进行 连接，使得第二基板21能够通过外接引脚23与封装结构100的外接结构(如电子装置1000的各功能模组)电连接，实现封装结构100内与第二基板21电连接的结构(如第二元器件222)与封装结构100的外接结构电连接。由于第二散热块224及第二连接柱223均能够导电，且第二连接柱223与第二基板21连接，因此，一些实施例中，可以通过第二基板21向第二连接柱223输入信号，信号能够通过第二连接柱223以及第二散热块224传输至第二元器件222。本实施例中，第二连接柱223通过第二基板21上的走线层112与第二基板21的外接引脚23连接，外接引脚23连接封装结构100的外接结构，封装结构100的外接结构依次通过外接引脚23、第二基板21、第二连接柱223、第二散热块224与对应的第二元器件222进行通信。或者，封装结构100的外接结构连接至第一基板11的外接引脚13，封装结构100的外接结构依次通过外接引脚13、第一基板11、第一连接柱123、第二连接柱223、第二散热块224与对应的第二元器件222进行通信。
由于第二连接柱223与第一连接柱123电连接，因此，通过外接引脚23传输的信号也可以依次经过第二连接柱223、第一连接柱123、第一散热块124传输至第一元器件122，实现第一元器件122与封装结构100的外接结构的通信。
本申请实施例中，由于第一基板11背离第一封装层12的表面设有外接引脚13，第二基板21背离第二封装层22的表面设有外接引脚23，使得信号既可以通过第一基板11侧进行传输，也可以通过第二基板21进行传输，相对于只在单侧(如第一基板11)设置外接引脚13的方式来说，外接引脚13的数量增加，从而能够增加整个封装结构100中引出信号的密度，增加封装结构100内的元器件的数量，提高封装结构100内的元器件的集成数量，便于实现电子装置1000的小型化以及功能多样化的提升。并且，相较于只在单侧设置外接引脚13的方式来说，封装结构100内的元器件不仅可以与第一基板11上的外接引脚13连接，还可以与第二基板21上的外接引脚23连接，从而能够增加封装结构100内元器件以及走线设置的灵活性，简化封装结构100设计。
请参阅图9，图9所示为本申请另一种实施例的结构示意图。本实施例与图3所示实施例的差别在于：本实施例中，第一封装层12层中的第一元器件122在封装结构100的厚度方向上堆叠设置，第一散热块124与堆叠的第一元器件122中离第一基板11最远的第一元器件122接触。其中，封装结构100的厚度方向是指垂直于第一基板11朝向第一封装层12表面的方向，即图9中所示的Y方向。
本实施例中，第一封装层12内封装的第一元器件122有三个，三个第一元器件122分别为第一元器件122a、第一元器件122b以第一元器件122c。其中，第一元器件122a以及第一元器件122b均设于第一基板11上并与第一基板11直接连接。第一元器件122a与第一元器件122b在封装结构100的厚度方向上堆叠设置，即第一元器件122c层叠于第一元器件122a背离第一基板11的一面。并且，本实施例中，第一元器件122c通过连接柱125与第一基板11连接，以实现第一元器件122c与第一基板11的电连接，并能够将第一元器件122c产生的热量部分经连接柱125传输至第一基板11上。本实施例中，第一散热块124与第一元器件122c背离第一基板11的表面接触，第一元器件122c工作产生的热量部分通过第一散热块124以及与第一连接柱123传输至第一基板10，再传输出去。
一些实施例中，连接柱125背离第一元器件122c的一端连接至第一元器件122a，以使得第一元器件122c与第一元器件122a之间实现电连接，并能够使得第一元器件122a的部分热量通过第一元器件122c后再传输至第一散热块124，或者，第一元器件122c产 生的热量能够部分通过第一元器件122a传输至第一基板11。
可以理解的是，本申请中对第一封装层12内堆叠的第一元器件122的数量没有限定，可以根据实际需求将三个、四个或更多个的第一元器件122进行堆叠。
本申请实施例中，通过将第一封装层12内的部分第一元器件122在封装结构100的厚度方向上堆叠设置，使得元器件在封装结构100的厚度方向上堆叠设置，从而提高封装结构100内的元器件的密度。当在第一封装层12内封装相同数量的第一元器件122时，由于部分第一元器件122在封装结构100的厚度方向上堆叠，相较于将第一元器件122均直接连接于第一基板11上的封装结构100(如图3所示的封装结构100)来说，能够减少第一基板11的大小，减小封装结构100的占用面积。
可以理解的是，本申请的其它一些实施例中，第二元器件222也可以在封装结构100的厚度方向上堆叠设置，从而进一步的增加封装结构100内的元器件的密度，利用封装结构100厚度方向上的空间，减小封装结构100的占用面积。当封装结构100应用于电子装置1000中时，由于其占用面积较小，能够减小电子装置1000的大小，实现电子装置1000的小型化。并且，由于封装结构100内的元器件密度增大，使得相较于图3所示的封装结构100来说，封装结构100体积相同时，封装结构100内能够封装的元器件的数量更多，进而能够有利于实现电子装置1000功能多样化的提升。
请参阅图10，图10为本申请另一些实施例的封装结构100的示意图。本实施例与图9所示实施例的差别在于：第一封装层12内还设有第三基板126，连接柱124支撑于第三基板126与第一基板11之间，并电连接第一基板11以及第三基板126。第三基板126的朝向第一基板11的表面和/或背离第一基板11的表面可以设置第一元器件122，以充分利用封装结构100厚度方向上的空间。并且，可以在第三基板126上设置多个(两个或者两个以上)第一元器件122，通过第三基板126实现设于第三基板126上的至少部分第一元器件122之间的电连接。本实施中，第一元器件122c通过连接柱125支撑于第一基板11朝向第一封装层12的表面，第一元器件122c与第一基板11之间能够形成空间以设置第一元器件122a，从而充分的利用封装结构100厚度方向上的空间，提高封装结构100内的元器件的密度。
一些实施例中，第二封装层22内也可以设置第三基板126，第三基板126通过连接柱125支撑于第二基板21与第三基板126之间，并电连接第二基板21以及第三基板126。第二元器件222设于第三基板126的朝向第二基板21的表面和/或背离第二基板21的表面。本实施例中，第三基板126上可以设置多个第二元器件222，通过第三基板126实现设于第三基板126上的至少部分第二元器件222之间的电连接。本实施中，通过在第一封装层12内设置第三基板126，使得在第三基板126的相对的两面均能够设置第一元器件122。并且，在第二封装层22内设置第三基板126，使得在第三基板126的相对的两面均能够设置第二元器件222，从而充分的利用封装结构100厚度方向上的空间，提高封装结构100内的元器件的密度。
可以理解的是，一些实施例中，也可以仅在第二封装层22内设置第三基板126，第一封装层12内没有设置第三基板126，即第二封装层22内的第二元器件222在封装结构100的厚度方向堆叠，第一封装层12内的第一元器件122均设于第一基板11上。
一些实施例中，连接柱124的一端连接至第三基板126，另一端可以连接至在厚度方向上与第三基板126堆叠并最靠近第三基板126的第一元器件122上。或者，连接柱125 的一端连接至第三基板126，另一端可以连接至在厚度方向上与第三基板126堆叠并最靠近第三基板126的第一元器件122上。
请参阅图11，图11所示为本申请的另一种封装结构100。本实施例与图3所示实施例的封装结构100的差别在于：连接层30还包括导热块32。导热块32位于第一散热块124露出第一封装材料层121的表面与第二散热块224露出第二封装材料层221的表面之间。导热块32连接第一散热块124以及第二散热块224之间，用于实现第二散热块224与第二封装体20之间的热量传递，提高第一封装体10以及第二封装体20之间的热量的传输速度，提高封装结构100内的均热效率。并且，第一散热块124露出第一封装材料层121的表面与第二散热块224露出第二封装材料层221的表面之间设有导热块32，即为在第一封装体10以及第二封装体20之间增加导热块32，从而能够进一步的提高第一封装体10以及第二封装体20之间的连接固定强度。其中，第一导热块32可以为一块或者多块，多块第一导热块32间隔设置。其中，第一导热块32可以为焊点或者导热胶层等导热结构。本实施例中，第一导热块32与子连接块31相同，均为焊点，从而简化制程。
请参阅图12，图12所示为本申请的另一种封装结构100。本实施例与图3所示实施例差别在于：第二封装体20背离第一封装体10的一面覆盖有导热胶层23，导热胶层23用于传输热量。本实施例中，第二封装体20的第二基板21位于背离第二封装层22背离第一封装体10的一面，导热胶层23位于第二基板21背离第二封装层22的表面。并且，本实施例中，导热胶层23覆盖第二基板21背离第二封装体20的表面。导热胶层23能够用于将封装结构100粘贴至电子装置1000内的散热结构上，以将封装结构100固定于电子装置1000内，并使得热量能够经过第二基板21、导热胶层23传输至散热结构上，以增强封装结构100的散热效率。
本实施例中，第二基板21背离第二封装层22一侧的绝缘层111的部分位置镂空，以露出部分走线层112，导热胶层23覆盖于第二基板21背离第二封装层22时，导热胶层22能够直接接触露出的部分走线层112。由于导热胶层23较绝缘层111的导热系数较高，使得本实施例的封装结构100内的元器件工作产生的热量能够更快的通过导热胶层23传输出去。可以理解的是，本申请的一些实施例中，也可以直接将去除第二基板21背离第二封装层22一侧的绝缘层111，并覆盖导热胶层23，进而使得走线层112传输的热量尽快的传输出去。需要说明的是，导热胶层23为绝缘导热材料形成。
一些实施例中，导热胶层23背离第二封装层22的一面设有离型膜24。将封装结构100固定于中框900上时，直接将离型膜24撕除即可将导热胶层23粘贴于中框900上，操作简单。
请参阅图13，图13所示为将图12所示实施例的封装结构100设于电子装置1000中时的部分截面示意图。本实施例中，电子装置1000包括中框900以及主板800，中框900用于实现电子装置1000的散热。封装结构100设于主板800与中框900之间。其中，封装结构100的第一基板11通过外接引脚13与主板800连接，以使得封装结构100与第一基板11固定并电连接。封装结构100的导热胶层23与中框900接触，以将封装结构100与中框900进行固定。本实施例中，封装结构100内元器件工作产生的热量可以传输至第一基板11，并通过外接引脚13传输至主板800，热量通过主板800分散至主板800的各个位置以及与主板800连接的各工作模组，避免热量在封装结构100位置集中而产生损坏。并且，封装结构100内元器件工作产生的热量可以传输至第二基板21，再通过导热胶层 23传输至中框900，并通过中框900将热量散出电子装置1000。
请参阅图14，图14所示为本申请的另一种实施例的封装结构100的结构示意图。本实施例与图3所示实施例的差别在于：第二封装体20还包括第三封装层25。第三封装体25封装于第二基板21背离第二封装层22的一面。第三封装层25包括第三封装材料层251以及内嵌于第三封装材料层251内的一个或者多个第三元器件252。每个第三元器件252均与第二基板21电连接。本实施例中，第三封装材料层251内嵌的第三元器件252为多个。
本实施例中，每个第三元器件252设于第二基板21上，并与第二基板21直接连接，即第三元器件252的引脚直接连接至第二基板21。可以理解的是，本申请的一些实施例中，第三元器件252也可以通过连接柱间接与第二基板21连接。或者，一些实施例中，第三元器件252在封装结构100的厚度方向上堆叠。堆叠的第三元器件252中部分第三元器件252直接与第二基板21电连接，其它的部分第三元器件252通过直接与第二基板21连接的第三元器件252间接与第二基板21电连接，或者通过连接柱间接与第二基板21电连接。
本实施例中，通过在第二基板21背离第二封装层22的一面封装第三封装层25，即第二基板21的相对两面均设置封装层，从而增加封装结构100的厚度方向堆叠的元器件的数量，减小封装结构100应用于电子装置1000内的占用面积的同时增加封装结构100内的元器件的数量，从而便于实现电子装置1000的小型化以及多功能化。
请参阅图15，图15所示为本申请的另一种实施例的封装结构100的结构示意图。本实施例中，第三封装层25还包括有多个第三连接柱253以及一个或者多个第三散热块254，所有的第三连接柱253及所有的第三散热块254均内嵌于第三封装材料层251内。每个第三连接柱253的一端连接至第二基板21，另一端延伸至第三封装层25背离第二基板21的表面，每个第三散热块254均与至少一个第三连接柱253连接，且每个第三散热块254均与一个或多个第三元器件252连接，从而通过第三散热块254能够连接第三元器件252以及第三连接柱253，第三元器件252的热量能够通过第三散热块254传输至第三连接柱253。
本实施例中，第三元器件252产生的部分热量能够直接传输至第二基板21，部分热量能够依次经第三散热块254、第三连接柱253传输至第二基板21，增加第三元器件252的热量传输途径，从而能够较快速的将第三元器件252工作产生的热量传输至封装结构100的其它位置，避免热量集中。并且，第二基板21产生的热量能够依次经过第二连接柱223、第一连接柱123传输至第一基板11，并通过第一基板11的外接引脚13传输至封装结构100外界，从而实现散热。可以理解的是，本实施例中，第二封装层22内的第二元器件222以及第一封装层12内的第一元器件122产生的热量也能够传输至第三封装层25，以实现封装结构100内的均热，避免封装结构100内某个位置的热量聚集，避免封装结构因为热量聚集而造成的损坏。
本申请的一些实施例中，第三散热块254背离第二基板21的表面露出第三封装材料层251，以简化生产制程。一些实施例中，在第三封装层25背离第二基板21的一侧覆盖导热胶层23。由于第三连接柱253背离第三基板126的表面露出第三封装材料层251，因此，第三连接柱253能够与导热胶层23接触，以通过第三连接柱253将封装结构100内的部分热量传输至导热胶层23。将封装结构100设于电子装置1000中时，导热胶层23 能够将封装结构100固定于电子装置1000中的散热结构上，并使封装结构100内产生的热量能够通过导热胶层23传输至电子装置1000内的散热结构上。
本实施例中，由于第三散热块254背离第二基板21的一面露出第三封装材料层251，导热胶层23覆盖于第三封装层25上背离第二基板21的一侧时，第三散热块254与导热胶层23直接接触，从而使得第三元器件252产生的热量能够更加快速的传输至导热胶层23，并通过导热胶层23传输至封装结构100外的散热结构上，提高封装结构100的散热效率。
请参阅图16，图16所示为本申请的另一种实施例的封装结构100的结构示意图。本实施例与图3所示实施例的差别在于：第一散热块124的背离第一基板11的表面露出第一封装材料层121，第二散热块224的背离第二基板21的表面露出第二封装层22，第一散热块124露出第一封装层12的表面与第二散热块224露出第二封装层22的表面相接触，且第一散热块124与第二散热块224形成为一体结构。本实施例中，第一散热块124与第二散热块224形成为一体结构是指：第一散热块124与第二散热块224之间能够通过分子间作用力实现第一封装体10与第二封装体20之间的固定连接。具体的，将第一散热块124露出第一封装层12的表面与第二散热块224露出第二封装层22的表面相接触，并对接触界面进行加热、加压等操作，使得第一散热块124露出第一封装层12的表面与第二散热块224露出第二封装层22的表面之间产生分子间作用力，从而使得第一散热块124与第二散热块224形成为一体结构。本实施例中，第一连接柱123露出第一封装材料层121的表面与第二连接柱223露出第二封装材料层221的表面接触，并通过第一连接柱123与第二连接柱223之间的分子间作用力实现固定。
本实施例中，第一连接柱123、第二连接柱223、第一散热块124、第二散热块224的形成材料均为金属铜。本实施例中，将第一封装体10与第二封装体20堆叠，且第一散热块124露出第一封装层12的表面与第二散热块224露出第二封装层22的表面相接触，第一连接柱123露出第一封装材料层121的表面与第二连接柱223露出第二封装材料层221的表面接触，再对封装结构100进行加热加压等处理，使得第一散热块124与第二散热块224之间产生铜-铜键合的分子间作用力，从而通过键合的方式使得第一封装体10与第二封装体20固定在一起。并且，第一连接柱123与第二连接柱223之间也会产生铜-铜键合的分子间作用力，实现第一连接柱123与第二连接柱223之间的固定以及电连接。
一些实施例中，第一散热块124背离第一基板123的表面会略突出于第一封装材料层121背离第一基板123的表面，第二散热块224背离第二基板223的表面会略突出于第二封装材料层221背离第二基板223的表面，使得对封装结构100进行加热加压等处理时，第一封装材料层121与第二封装材料层221不会影响第一散热块124与第二散热块224的紧密接触，避免对第一散热块124与第二散热块224之间分子间作用力产生的影响。
本实施例中，由于第一连接柱123、第二连接柱223、第一散热块124、第二散热块224的形成材料相同，且第一散热块124与第一连接柱123之间连接、第二散热块224与第二连接柱223之间连接，因此，第一连接柱123可以不与第二连接柱223相对设置，而对应与第一散热块124的位置，即第一封装体10与第二封装体20堆叠时，第一连接柱123露出第一封装材料层121的一端与第二散热块224接触，使得第一连接柱123中传输的信号能够通过第二散热块224传输至第二连接柱223。或者，一些实施例中，也可以为第一封装体10与第二封装体20堆叠时，第二连接柱223露出第二封装材料层221的一端 与第一散热块124接触，使得第一连接柱123中传输的信号能够通过第一散热块124传输至第二连接柱223。当第一连接柱123与第二散热块224相接触时，第一连接柱123与第二散热块224在一定条件下也能够产生分子间作用力，使得第一封装体10与第二封装体20固定并电连接；或者，第二连接柱223与第一散热块124相接触时，第二连接柱223与第一散热块124在一定条件下也能够产生分子间作用力，使得第一封装体10与第二封装体20固定并电连接。
请参阅图17，图17所示为本申请的另一种封装结构100。本实施例与图3所示实施例的差别在于：第二基板21位于第二封装层22朝向第一基板11的一侧，第一连接柱123与第二基板21电连接。本实施例中，第二基板21上设有与第二基板21的走线层112连接的焊垫，第一连接柱123露出第一封装材料层121的表面通过连接层30与第二基板21上的焊垫连接，从而实现第一连接柱123与基板的电连接。本实施例中，第一连接柱123露出第一封装材料层121的表面为第一封装体10的第一输出端子10a，第二基板21上的与第一连接柱123电连接的焊垫为第二连接端子20a。
一些实施例中，第二封装层22背离第二基板21的一面覆盖有导热胶层23。本实施例中，第二散热块224背离第二基板21的表面露出第二封装材料层221，第二连接柱223背离第二基板21的表面露出第二封装材料层221。导热胶层23覆盖于第二封装层22上时能够直接与第二散热块224以及第二连接柱223接触，从而将第二散热块224上传输的热量以及传输至第二连接柱223的热量能够快速通过导热胶层23散出，提高封装结构100的散热效率。
本申请还提供一种封装结构100的制备方法。请参阅图18，图18所示为图3所示实施例的封装结构100的制备过程流程图。其中，封装结构100的形成方法为先形成第一封装体10以及第二封装体20，再将第一封装体10以及第二封装体20通过连接层30连接起来，实现第一封装体10与第二封装体20的固定连接以及电连接。其中，第一封装体10的形成方法可以包括：
步骤110：请参阅图19a，在第一基板11上固定第一连接柱123以及第一元器件122。当本申请的其它一些实施例中，第一封装层12内的第一元器件122在厚度方向上堆叠设置时，步骤110为在第一基板11上固定第一连接柱123以及部分第一元器件122。
本实施例中，将第一连接柱123固定在第一基板11上的方式可以为通过导电胶粘贴或焊料焊接等方式，以使第一连接柱123与第一基板11固定并电连接。第一元器件122可以通过贴片或者键合等方式固定于第一基板11上，以实现第一元器件122与第一基板11的固定以及电连接。
一些实施例中，当第一元器件122为芯片，且芯片通过正装的方式固定于第一基板11上时，即芯片的引脚位于芯片的背离第一基板11的表面，芯片通过键合线1221与第一基板11固定并电连接之前，需要在芯片背离第一基板11的表面通过粘胶或焊接等方式粘贴金属片125。本实施例中，金属片125的材料与第一连接柱123以及第一散热块124的材料相同。可以理解的是，一些实施例中，金属片125的材料也可以与第一连接柱123或者第一散热块124的材料不同。
步骤120：请参阅图19b，在第一基板11上设有第一连接柱123以及第一元器件122的一面上封装第一封装材料层121，使得第一连接柱123以及第一元器件122均内嵌于第一封装材料层121内。其中，第一封装材料层121为树脂等封装材料。
步骤130：请参阅图19c，在第一封装材料层121背离第一基板11的表面形成凹槽，以露出第一连接柱123背离第一基板11的表面以及第一元器件122背离第一基板11的表面。当第一元器件122背离第一基板11的表面设有金属片时，步骤130中在第一封装材料层121形成凹槽以露出设于第一元器件122表面的金属片。
本实施例中，通过激光开槽的方式形成凹槽，并可根据具体需求控制激光开槽的深度。由于通过正装的方式固定芯片时，芯片的有源面背离第一基板11。当激光开槽时，由于开槽的位置位于芯片的上方，为了避免开槽深度的控制精度不够而损坏芯片的问题，在正装的芯片背离第一基板11的一面形成金属片，激光开槽至露出金属片125，从而能够避免激光开槽对芯片的损坏。可以理解的是，本申请的其它一些实施例中，也可以通过模压等方式形成凹槽。
步骤140：请参阅图19d，在第一封装材料层121背离第一表面的一侧形成金属层126，金属层126覆盖第一封装材料层121背离第一基板11的表面，并填充步骤130中形成的凹槽。
步骤150：请参阅图19e，将金属层126进行减薄至合适的厚度，并得到连接第一元器件122与第一连接柱123的第一散热块124。本实施例中，减薄后的金属层126背离第一基板11的表面为平面，以便于后续步骤的加工。可以理解的是，一些实施例中，可以没有步骤150。
形成第二封装体20的方法与形成第一封装体10的方法相似，包括：
步骤210：请参阅图19f，在第二基板21上固定第二连接柱223以及第二元器件222。当本申请的其它一些实施例中，第一封装层12内的第二元器件222在厚度方向上堆叠设置时，步骤110为在第二基板21上固定第二连接柱223以及部分第二元器件222。
本实施例中，将第二连接柱223固定在第二基板21上的方式可以为通过导电胶粘贴或焊料焊接等方式，以使第二连接柱223与第二基板21固定并电连接。第二元器件222可以通过贴片或者键合等方式固定于第二基板21上，以实现第二元器件222与第二基板21的固定以及电连接。
一些实施例中，当第二元器件222为芯片，且芯片通过正装的方式固定于第二基板21上时，即芯片的引脚位于芯片的背离第二基板21的表面，芯片通过键合线1221与第二基板21固定并电连接之前，需要在芯片背离第二基板21的表面通过粘胶或焊接等方式粘贴金属片225。本实施例中，金属片225的材料与第二连接柱223以及第二散热块224的材料相同。可以理解的是，一些实施例中，金属片225的材料也可以与第二连接柱223或者及第二散热块224的材料不同。
步骤220：请参阅图19g，在第二基板21上设有第二连接柱223以及第二元器件222的一面上封装第二封装材料层221，使得第二连接柱223以及第二元器件222均内嵌于第二封装材料层221内。其中，第二封装材料层221为树脂等封装材料。
步骤230：请参阅图19h，在第二封装材料层221背离第二基板21的表面形成凹槽，以露出第二连接柱223背离第二基板21的表面以及第二元器件222背离第二基板21的表面。当第二元器件222背离第二基板21的表面设有金属片225时，步骤230中在第二封装材料层221形成凹槽以露出设于第二元器件222表面的金属片225。
本实施例中，通过激光开槽的方式形成凹槽，并可根据具体需求控制激光开槽的深度。由于通过正装的方式固定芯片时，芯片的有源面背离第二基板21。当激光开槽时，由于 开槽的位置位于芯片的上方，为了避免开槽深度的控制精度不够而损坏芯片的问题，在正装的芯片背离第二基板21的一面形成金属片，激光开槽至露出金属片225，从而能够避免激光开槽对芯片的损坏。可以理解的是，本申请的其它一些实施例中，也可以通过模压等方式形成凹槽。
步骤240：请参阅图19i，在第二封装材料层221背离第一表面的一侧形成金属层226，金属层226覆盖第二封装材料层221背离第二基板21的表面，并填充步骤130中形成的凹槽。
步骤250：请参阅图19j，将金属层226进行减薄至合适的厚度，并得到连接第二元器件222与第二连接柱223的第二散热块224。本实施例中，减薄后的金属层226背离第二基板21的表面为平面，以便于后续步骤的加工。可以理解的是，一些实施例中，可以没有步骤150。
可以理解的是，一些实施例中，第二封装体20还包括第三封装层25时，通过在第二基板21上背离第二元器件222的一面重复步骤210至步骤250，从而形成第三封装层25。
最后，将第一封装体10与第二封装体20固定连接。一些实施例中，将第一封装体10与第二封装体20固定连接包括：
步骤310：请参阅图19k，通过连接层30将第一封装体10与第二封装体20进行固定连接，并实现第一封装体10与第二封装体20的电连接。
一些实施例中，连接层30包括子连接块31，子连接块31可以为焊料或者导电胶形成，即通过焊接或者点胶的方式实现第一封装体10与第二封装体20进行固定连接以及电连接。
一些实施例中，步骤310可以替换为将第一封装体10的第一封装材料层211与第二封装体20的第二封装材料层221贴合，并对第一封装体10以及第二封装体20加热加压，以使得第一封装体10的第一散热块124与第二封装体20的第二散热块224之间形成分子间作用力，从而实现第一封装体10与第二封装体20进行固定连接以及电连接。
本申请中，第一元器件122产生的热量能够部分直接传输至第一基板11，部分通过与第一元器件122连接的第一散热块124以及第一连接柱123传输至第一基板11。并且，第二元器件222的产生的热量也能够部分直接传输至第二基板22，部分通过与第二元器件222连接的第二散热块224以及第二连接柱223传输至第二基板21。通过第一元器件以及第二元器件的热量传输途径可知，本申请中的第一元器件与第二元器件的热量传输途径均有多种，在第一元器件或第二元器件工作发热时，能够通过多种途径及时的将热量传输出去，以提高封装结构的热量传输效率，增强封装结构的散热效果，从而能够避免三维封装堆叠结构内的热量过高而影响封装结构内元器件的正常工作或对封装结构内元器件造成的损坏。并且，本申请实施例中，第一连接柱123以及第二连接柱223连接，使得第一封装体10以及第二封装体20之间电连接。并且，第一封装体10或第二封装体20内的元器件产生的热量能够在第一封装体10与第二封装体20之间进行传输，从而能够避免热量在第一封装体10或者第二封装体20内聚集，避免封装结构100内热量的聚集而产生的损坏。
以上为本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。

Claims (20)

  1. 一种封装结构，其特征在于，包括第一封装体及堆叠于所述第一封装体上的第二封装体；
    所述第一封装体包括第一基板以及封装于所述第一基板上的第一封装层；所述第一基板背离所述第一封装层的一侧形成多个外接引脚，所述外接引脚用于连接所述封装结构的外接结构；所述第一封装层包括第一封装材料层以及嵌设于所述第一封装材料层中的一个或者多个第一元器件和多个第一连接柱；每个所述第一元器件均与所述第一基板电连接；每个所述第一连接柱一端连接所述第一基板，另一端延伸至所述第一封装材料层背离所述第一基板的表面；所述第一连接柱采用导热材料形成；
    所述第二封装体包括第二基板以及封装于所述第二基板上的第二封装层；第二封装层包括第二封装材料层以及内嵌于所述第二封装材料层中的一个或者多个第二元器件、多个第二连接柱及一个或者多个第二散热块；每个所述第二元器件均与所述第二基板连接；每个所述第二连接柱一端连接所述第二基板，另一端延伸至所述第二封装材料层背离所述第二基板的表面；每个所述第二散热块与至少一个所述第二连接柱连接，且每个所述第二散热块连接一个或多个所述第二元器件；所述第二连接柱、所述第二散热块采用导热材料形成；所述第二基板或所述第二连接柱连接所述第一连接柱。
  2. 如权利要求1所述的封装结构，其特征在于，所述第一封装体包括一个或者多个第一散热块，每个所述第一散热块与至少一个所述第一连接柱连接，且每个所述第一散热块与一个或多个所述第一元器件连接；所述第一散热块为导热材料形成。
  3. 如权利要求2所述的封装结构，其特征在于，每个所述第一散热块均位于所述第一元器件背离所述第一基板的一面，每个所述第一连接柱均相对所述第一元器件靠近所述第一封装体的边缘；或
    每个所述第二散热块均位于所述第二元器件背离所述第二基板的一面，所述第二连接柱相对所述第二元器件靠近所述第二封装体的边缘。
  4. 如权利要求3所述的封装结构，其特征在于，至少一个所述第一连接柱或者所述第二连接柱接地，所有的所述第一散热块连接为一体并与接地的所述第一连接柱或接地的所述第二连接柱电连接，所有的所述第二散热块连接为一体并与接地的所述第一连接柱或接地的所述第二连接柱电连接。
  5. 如权利要求2所述的封装结构，其特征在于，所述第一元器件、所述第一散热块以及所述第一连接柱均为多个，多个所述第一散热块之间间隔设置，不同的所述第一散热块连接的所述第一元器件及所述第一连接柱不同，不同的所述第一散热块用于传输不同的信号；或
    所述第二元器件、所述第二散热块以及所述第二连接柱均为多个，多个所述第二散热块之间间隔设置，不同的所述第二散热块连接的所述第二元器件以及所述第二连接柱不同，不同的所述第二散热块用于传输不同的信号。
  6. 如权利要求1所述的封装结构，其特征在于，所述第二封装体背离所述第一封装体的一侧设有外接引脚，所述外接引脚用于与所述封装结构的外接结构电连接。
  7. 如权利要求2-6任一项所述的封装结构，其特征在于，所述第二封装层位于所述第二基板朝向所述第一封装层的一侧，所述第一连接柱与所述第二连接柱连接；
    所述封装结构还包括连接层，所述连接层连接于所述第一封装层与所述第二封装层之间，并连接所述第一连接柱与所述第二连接柱。
  8. 如权利要求7所述的封装结构，其特征在于，所述连接层包括多个间隔设置的子连接块，所述第一连接柱及所述第二连接柱均为多个，至少部分所述第一连接柱与至少部分所述第二连接柱相对设置，所述子连接块连接于相对的所述第一连接柱与所述第二连接柱之间，所述子连接块采用导热导电材料形成。
  9. 如权利要求8所述的封装结构，其特征在于，所述第二散热块的背离第二基板的表面露出所述第二封装层，所述第一散热块的背离第一基板的表面露出所述第一封装层，所述连接层还包括导热块，所述导热块连接于所述第一散热块露出所述第一封装层的表面与所述第二散热块露出所述第二封装层的表面之间。
  10. 如权利要求2-6所述的封装结构，其特征在于，所述第二散热块的背离第二基板的表面露出所述第二封装层，所述第一散热块的背离第一基板的表面露出所述第一封装层，所述第一散热块露出所述第一封装层的表面与所述第二散热块露出所述第二封装层的表面相接触，且所述第一散热块与所述第二散热块形成一体结构。
  11. 如权利要求7-10任一项所述的封装结构，其特征在于，所述第二封装体还包括第三封装层，所述第三封装层封装于所述第二基板背离所述第二封装层的一面，所述第三封装层包括第三封装材料层以及内嵌于所述第三封装材料层内的一个或者多个第三元器件，每个所述第三元器件均与所述第二基板连接。
  12. 如权利要求11所述的封装结构，其特征在于，所述第三封装层还包括内嵌于所述第三封装材料层内的多个第三连接柱以及一个或者多个第三散热块；每个所述第三连接柱的一端均连接至所述第二基板，另一端均延伸至所述第三封装材料层背离所述第二基板的表面，每个所述第三散热块与至少一个所述第三连接柱连接，且每个所述第三散热块连接一个或多个所述第三元器件。
  13. 如权利要求7-10任一项所述的封装结构，其特征在于，所述第二基板包括走线层以及覆盖于所述走线层背离所述第二封装层一侧的绝缘层，所述第二元器件与所述走线层电连接；所述绝缘层部分位置镂空，以露出部分所述走线层；
    所述第二基板背离所述第二封装层的一面覆盖有导热胶层，所述导热胶层与露出的部分所述走线层接触，所述导热胶层用于传输热量。
  14. 如权利要求13所述的封装结构，其特征在于，所述导热胶层背离所述第二封装层的一面设有离型膜。
  15. 如权利要求2所述的封装结构，其特征在于，所述第一元器件包括正装芯片，所述正装芯片的背离所述第一基板的表面层叠有金属片，所述第一散热块连接至所述金属片；或
    所述第二元器件包括正装芯片，所述正装芯片的背离所述第二基板的表面层叠有金属片，所述第二散热块连接至所述金属片。
  16. 如权利要求1所述的封装结构，其特征在于，所述第一基板内的所述第一元器件为多个，多个所述第一元器件中至少两个所述第一元器件在所述第一封装体的厚度方向上堆叠设置；或
    所述第二基板内的所述第二元器件为多个，多个所述第二元器件中至少两个所述第二元器件在所述第二封装体的厚度方向上堆叠设置。
  17. 一种电子装置，其特征在于，所述电子装置包括功能模块以及如权利要求1-16任一项所述的封装结构，所述功能模块与所述封装结构之间电连接。
  18. 如权利要求17所述的电子装置，其特征在于，所述电子装置包括主板，所述封装结构及所述功能模块固定于所述主板上并与所述主板电连接；所述封装结构的第一基板相对所述第一封装层靠近所述主板，并通过所述外接引脚与所述主板电连接。
  19. 如权利要求18所述的电子装置，其特征在于，所述电子装置包括中框，所述中框与所述主板相对设置，所述封装结构位于所述中框与所述主板之间并连接所述中框及所述主板；所述封装结构的第二封装体与背离所述第一基板的一面与所述中框连接，所述中框用于散热。
  20. 如权利要求17-19任一项所述的电子装置，其特征在于，所述电子设备为手机，所述功能模块包括天线模块、传感器模块、音频模块、摄像模块、连接器模块、电源模块中的一种或者几种。
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