WO2021051983A1 - 电路组件以及电子设备 - Google Patents
电路组件以及电子设备 Download PDFInfo
- Publication number
- WO2021051983A1 WO2021051983A1 PCT/CN2020/102282 CN2020102282W WO2021051983A1 WO 2021051983 A1 WO2021051983 A1 WO 2021051983A1 CN 2020102282 W CN2020102282 W CN 2020102282W WO 2021051983 A1 WO2021051983 A1 WO 2021051983A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- screw
- circuit
- electronic device
- connecting member
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/144—Stacked arrangements of planar printed circuit boards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
- H05K3/363—Assembling flexible printed circuits with other printed circuits by soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/0999—Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10409—Screws
Definitions
- This application relates to the field of electronic equipment, and more specifically, to circuit components and electronic equipment in the field of electronic equipment.
- a circuit board (such as a land grid array (LGA)) can be fixed in a partial area of the main board, thereby increasing the number of conductive layers available for wiring in a local area of the main board.
- LGA land grid array
- the thickness of electronic products is limited, so the available connection space between the motherboard and the circuit board or the circuit board and the electronic components is very small.
- the connection relationship between the motherboard and the circuit board or the circuit board and the electronic components is relatively unstable. The equipment is easily damaged. Therefore, how to strengthen the stability of the connection between the motherboard and the circuit board or the circuit board and the electronic components is an urgent problem to be solved.
- the present application provides a circuit assembly and electronic equipment, aiming at improving the stability of the circuit board fixed on the circuit board.
- a circuit assembly including: a first circuit board and a second circuit board; solder balls connected between the first circuit board and the second circuit board; a first screw passing through The second circuit board passes through the first circuit board or a connector fixed on the first circuit board; a nut is matched with the first screw.
- the connecting member refers to a component that functions as a connection.
- the connector fixed on the first circuit board can be used to connect the first circuit board and the second circuit board, or to connect the first circuit board and the electronic components provided on the first circuit board.
- the plastic packaging material mainly functions to encapsulate and wrap parts, for example, to encapsulate the first circuit board and the electronic components provided on the first circuit board as a whole.
- the plastic packaging material can play a role in connecting multiple parts to be wrapped, such as connecting the first circuit board and the electronic components provided on the first circuit board.
- the plastic packaging material is mainly used to encapsulate parts and does not belong to the connector in this application.
- the screw passes through the second circuit board and the first circuit board or the connection member fixed on the first circuit board, and then is matched with the nut to restrain the first circuit board and the second circuit The relative displacement between the plates.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the available space between the first circuit board and the second circuit board can be reduced.
- the connection space increases the available connection space between the electronic component and the first circuit board and/or the second circuit board, and reduces the thickness of the electronic device.
- the strength requirement of the first circuit board is relatively low.
- the thickness of the first circuit board can be reduced, providing more available space for the connection of electronic components and the circuit board, and the connection between the circuit board and the circuit board, and further reducing the size of the electronic device. thickness.
- the nut is fixed on a side of the second circuit board away from the first circuit board.
- the screw can be tightened at one time by the machine, which is beneficial to improve the degree of automation of assembling the circuit assembly.
- the connecting member includes a first part and a second part, and the first part of the connecting member is located between the first circuit board and the second circuit board. Within the space between the two, the second part of the connector is located outside the space between the first circuit board and the second circuit board.
- the connecting piece can be fixed on the first circuit board by welding, riveting, pasting, etc.
- the connecting member is arranged between the first circuit board and the second circuit board, which can make the structure of the circuit assembly more compact.
- the connecting member is located on a side of the first circuit board away from the second circuit board.
- the connecting piece can be fixed on the first circuit board by welding, riveting, pasting, etc.
- the connecting member since the connecting member is arranged outside the space between the first circuit board and the second circuit, the height of the connecting member is relatively high, so the connection between the first circuit board and the second circuit is stable The sex is relatively high. In other words, under the condition of ensuring the use requirements, the thickness of the first circuit board or the second circuit board can be further reduced to provide more available space for the connection of electronic components and the circuit board, and the connection between the circuit board and the circuit board. , To further reduce the thickness of electronic equipment.
- the circuit component further includes:
- the plastic packaging material is used to wrap part of the connecting member and part or all of the sides of the first circuit board.
- connection stability between the plastic sealing material connecting member and the first circuit board is adopted.
- the connecting member is a plastic packaging material that wraps part or all of the sides of the first circuit board.
- connection relationship between the plastic packaging material and the first circuit board is relatively stable. Therefore, the stability of the connection between the first circuit board and the second circuit is strong.
- the position of the first screw is far from the center of the first circuit board.
- the first screw may be located far away from the center of the first circuit board.
- the solder ball includes a non-functional solder ball and a functional solder ball, and the non-functional solder ball is arranged around the first screw.
- Non-functional solder balls refer to solder balls that are not electrically connected to the circuit board or electronic components, and are only used to mechanically connect two components together.
- a functional solder ball refers to a solder ball that can function as an electrical connection between two components.
- the connection between the circuit board and the circuit board or between the circuit board and the electronic component is relatively unstable in the event of an electronic device falling down, and the connection between the circuit board and the electronic component is relatively unstable. Failure phenomena such as breakage and disconnection of solder balls will directly cause damage to electronic equipment. However, if the non-functional solder balls are set reasonably, the non-functional solder balls will break, disconnect and other failures in the sudden situation such as the drop of the electronic device, which will not affect the electrical performance of the electronic components and the circuit board, and the electronic device will still It can be used normally, so the non-functional solder balls can protect the functional solder balls.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the size of the non-functional solder ball is larger than the size of the functional solder ball, which can enhance the effect of the non-functional solder ball to protect the functional solder ball.
- the first circuit board includes a first via hole in contact with the first screw, and a material of the first via hole is a thermally conductive material.
- the second circuit board includes a second via hole in contact with the housing, and the material of the second via hole is a thermally conductive material.
- the circuit assembly further includes: a thermally conductive material disposed on the inner wall of the hole through which the first screw passes.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the hole through which the first screw passes may be a through hole.
- the electronic components generate heat during operation, and part of the heat generated by the electronic components can be conducted away through the circuit board. Since the inner wall of the hole through which the first screw passes is made of a heat-conducting material, the speed at which the heat on the circuit board is conducted out through the first screw can be increased, thereby reducing the risk of serious heating of the electronic device.
- an electronic device including: a housing; a first circuit board; and a second circuit board fixed on the housing and located between the housing and the first circuit board; A solder ball is connected between the first circuit board and the second circuit board; a first screw passes through the second circuit board, and passes through the first circuit board or is fixed on the first circuit board.
- the second circuit board is usually fixed on the housing, that is, the relative displacement between the second circuit board and the housing is usually limited, so it can pass through the second circuit board.
- the screws fix the first circuit board on the housing, thereby restricting the relative displacement between the first circuit board and the housing or between the first circuit board and the second circuit board.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the distance between the first circuit board and the second circuit board can be reduced.
- the available connection space is increased, the available connection space between the electronic component and the first circuit board and/or the second circuit board is increased, and the thickness of the electronic device is reduced.
- the nut is fixed on a side of the second circuit board away from the first circuit board.
- the connector includes a first part and a second part, and the first part of the connector is located between the first circuit board and the second circuit board. Within the space between the two, the second part of the connector is located outside the space between the first circuit board and the second circuit board.
- the connecting member is located on a side of the first circuit board away from the second circuit board.
- the electronic device further includes:
- the plastic packaging material is used to wrap part of the connecting member and part or all of the sides of the first circuit board.
- the connecting member is a plastic packaging material that wraps part or all of the sides of the first circuit board.
- the position of the first screw is away from the center of the first circuit board.
- the solder ball includes a non-functional solder ball and a functional solder ball, and the non-functional solder ball is arranged around the first screw.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the first circuit board includes a first via hole in contact with the first screw, and a material of the first via hole is a thermally conductive material.
- the second circuit board includes a second via hole in contact with the housing, and a material of the second via hole is a thermally conductive material.
- the circuit assembly further includes: a thermally conductive material disposed on the inner wall of the hole through which the first screw passes.
- a circuit assembly including: a first circuit board; a connector, fixed on the first circuit board, and including a hole for passing a screw.
- the connecting member is fixed on the first circuit board, and the connecting member is provided with holes for passing through screws, which facilitates the stable connection of the first circuit board and other circuit boards.
- the circuit assembly further includes: a second circuit board fixed on the first circuit board, and the connecting member includes a first part and a second part, The first part of the connecting member is located in the space between the first circuit board and the second circuit board, and the second part of the connecting member is located between the first circuit board and the second circuit board. Outside the space between the plates.
- the circuit assembly further includes: a second circuit board fixed on the first circuit board, and the connector is located far away from the first circuit board One side of the second circuit board.
- the circuit assembly further includes: a plastic encapsulation material for wrapping part of the connecting member and part or all of the sides of the first circuit board, and the hole Located outside the plastic packaging material.
- the first circuit board includes a first via hole for contacting the screw, and a material of the first via hole is a thermally conductive material.
- the inner wall of the hole is provided with a thermally conductive material.
- the position of the hole is far away from the center of the first circuit board.
- Fig. 1 is a schematic structural diagram of an electronic device.
- Fig. 2 is a schematic structural diagram of a circuit assembly.
- Fig. 3 is a schematic structural diagram of a circuit assembly.
- FIG. 4 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- Fig. 5 is a schematic structural diagram of a non-functional solder ball and a functional solder ball provided by an embodiment of the present application.
- Fig. 6 is a schematic structural diagram of a circuit assembly mounted on an electronic device according to an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 8 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 9 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- Fig. 12 is a schematic structural diagram of a connector provided by an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 14 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 15 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 16 is a schematic structural diagram of a circuit assembly mounted on an electronic device according to an embodiment of the present application.
- FIG. 17 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 18 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 19 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 20 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 21 is a schematic structural diagram of a plastic packaging material provided by an embodiment of the present application.
- FIG. 22 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 23 is a schematic structural diagram of a circuit component installed on an electronic device according to an embodiment of the present application.
- FIG. 24 is a schematic structural diagram of a circuit assembly installed on an electronic device according to an embodiment of the present application.
- FIG. 1 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application.
- the electronic device 100 may be a mobile phone, a tablet computer, an e-reader, a notebook computer, a digital camera, a vehicle-mounted device, or a wearable device.
- the electronic device 100 is a mobile phone as an example for description.
- the electronic device 100 includes a housing 10, a display screen 20 and a circuit assembly 30.
- the display screen 20 and the circuit assembly 30 are installed in the housing 10.
- the housing 10 includes a frame and a back cover.
- the frame surrounds the outer periphery of the display screen 20 and surrounds the outer periphery of the back cover, and the display screen 20 and the back cover are spaced apart.
- the cavity formed between the display screen 20, the frame and the back cover is used for placing the circuit assembly 30, and the housing 10 can be used for fixing the circuit assembly 30.
- the electronic device 100 also includes a power source 40 for supplying power to the circuit assembly 30.
- the power source 40 may be a lithium electronic battery, for example.
- the circuit assembly 30 may be a printed circuit board assembly (PCBA).
- the circuit assembly 30 includes a printed circuit board (PCB) and at least one electronic component electrically connected to the PCB.
- the power supply in FIG. 1 is used to power the PCB and/or the at least one electronic component.
- the drum-shaped pattern in FIG. 2 represents solder balls 320 for mechanical fixing and/or electrical connection. It should be understood that the solder balls described in this application actually refer to soldering materials for mechanically connecting and/or electrically connecting a circuit board and a circuit board, or refer to soldering materials for mechanically connecting and/or electrically connecting a circuit board and electronic components.
- solder ball described in this application is not necessarily a spherical shape, but may be a polyhedron, a spherical shape, an ellipsoid, a truncated cone shape, a chamfered shape, and the like.
- this application will collectively refer to solder balls of various shapes as solder balls.
- the connection function of the solder ball includes mechanical connection and/or electrical connection unless there is a special description.
- solder balls connected between the circuit board and the electronic components can represent the solder balls that are mechanically connected and/or electrically connected between the circuit board and the electronic components; that is, the solder balls connected between the two circuit boards can represent The solder balls between the two circuit boards are mechanically and/or electrically connected.
- the PCB may be, for example, a main board, a frame board (FB), a land grid array (LGA), or the like.
- the PCB 301 can be fixed to the housing 10 by screws 340.
- the PCB 301 also includes soldering areas (that is, pads) that can be used for soldering.
- the electronic component can be electrically connected to the PCB 301 by soldering in the soldering area of the PCB 301, and further, electrically connected to other electronic components or the PCB.
- the PCB 302 also includes a soldering area (that is, a pad) that can be used for soldering.
- the electronic component can be electrically connected to the PCB 302 by soldering in the soldering area of the PCB 302, and further, electrically connected to other electronic components or the PCB.
- the PCB 302 can be fixed on the PCB 301 by solder balls 320.
- the PCB 301 shown in FIG. 2 is a motherboard, and the PCB 302 is a single-sided LGA (that is, the PCB 302 is provided with electronic components on one surface).
- the PCB 301 shown in FIG. 3 is a frame board, and the PCB 302 is a double-sided LGA (that is, the PCB 302 is provided with electronic components on both sides).
- the electronic components electrically connected to the PCB can be, for example, a power management unit (PMU), a radio frequency power amplifier (RF PA), a radio frequency integrated circuit (RF IC), and an application processor ( Application Processor, AP), double data rate (DDR) memory, universal flash storage (UFS), system on chip (SOC) components, etc.
- PMU power management unit
- RF PA radio frequency power amplifier
- RF IC radio frequency integrated circuit
- AP application processor
- DDR double data rate
- UFS universal flash storage
- SOC system on chip
- Multiple electronic components can be stacked and packaged to form a package on package (POP) component.
- the electronic component 331 shown in FIG. 2 can be a PMU
- the electronic component 332 can be an RF PA
- the electronic component 333 can be an RF IC
- the electronic component 334 can be a POP component.
- the POP component can be formed by stacking AP and DDR memory.
- 335 can be UFS.
- the electronic component 336 shown in FIG. 3 may be a SOC component, the electronic component 337 may be a DDR memory, and the electronic component 338 may be a UFS. Wherein, the electronic component 338 may be arranged in the through hole 310 of the PCB 301. It should be understood that the electronic components electrically connected to the PCB are not limited to the specific electronic components disclosed in this application.
- circuit board and the electronic components are fixed by solder balls, and the circuit board and the circuit board are also fixed by solder balls.
- the height, quantity and size of the solder balls determine the stability of the connection between the electronic components and the circuit board and the stability of the connection between the circuit board and the circuit board. Due to the limited thickness of electronic equipment, it is more difficult to reduce the space occupied by electronic components. Therefore, the space for connecting electronic components and circuit boards and the space for connecting circuit boards and circuit boards are small. Electronic components and circuits The connection stability between the boards and the connection stability between the circuit board and the circuit board are poor.
- the embodiments of the present application provide an electronic device and a circuit assembly, aiming at improving the stability of the connection between the circuit board and the circuit board in a limited connection space.
- using the method of the present application is also expected to reduce the space occupied by the connection between the circuit board and the circuit board, so it can increase the available connection space between the electronic component and the circuit board, thereby improving the connection between the electronic component and the circuit board. stability.
- the method of the present application can reduce the space occupied by the connection between the circuit board and the circuit board, the thickness of the electronic device can be reduced.
- circuit board For ease of description, this application divides circuit boards into single-sided circuit boards and double-sided circuit boards, where single-sided circuit board refers to a circuit board with electronic components on one side, and double-sided circuit board refers to two sides. Circuit board provided with electronic components.
- FIG. 4 shows an electronic device provided by an embodiment of this application.
- the electronic device includes a circuit assembly 400 and a housing 10.
- the circuit assembly 400 is located on one side of the housing 10.
- the circuit assembly 400 includes a first circuit board 401, a second circuit board 402, and solder balls 420 connected between the first circuit board 401 and the second circuit board 402.
- the second circuit board 402 may be a main board or a frame board.
- the first circuit board 401 is located on a side of the second circuit board 402 away from the housing 10.
- the electronic device further includes a first screw 411 that passes through the second circuit board 402 and is used to restrict the relative displacement between the first circuit board 401 and the second circuit board 402. As shown in FIG.
- the first screw 411 passes through the first circuit board 401 and the second circuit board 402 in sequence, and is connected to the housing 10. That is to say, the second circuit board 402 is usually fixed on the housing 10, and the first screw 411 can restrain the first circuit board 401 indirectly by restricting the relative displacement between the first circuit board 401 and the housing 10 The relative displacement with the second circuit.
- Electronic components may be provided on the first circuit board 401 and/or the second circuit board 402. As shown in FIG. 4, the electronic components 430 on the first circuit board 401 can be electrically connected to the first circuit board 401 through solder balls arranged between the first circuit board 401 and the electronic components 430, and further by being arranged on the first circuit board 401.
- the solder balls 420 between the circuit board 401 and the second circuit board 402 are electrically connected to the second circuit board 402.
- the connection between the first screw and the housing 10 can be achieved by providing an internal thread on the housing 10 or through a nut fixed on the housing 10 to restrict the relative displacement between the first circuit board and the housing 10.
- the housing 10 further includes an internal thread for mating with the first screw.
- the housing 10 shown in FIG. 4 includes a first support portion 412 that abuts on the side of the second circuit board 402 away from the first circuit board 401.
- the first support portion 412 includes an internal thread for connecting with the first screw 411. Cooperate.
- the height of the first screw 411 may be determined according to the thickness of the first circuit board 401, the thickness of the second circuit board 402, and the height of the interval between the first circuit board 401 and the second circuit board 402. Generally, the height of the first screw 411 is greater than the sum of the thickness of the first circuit board 401, the thickness of the second circuit board 402, and the height of the interval between the first circuit board 401 and the second circuit board 402.
- the second circuit board is usually fixed on the housing 10, that is, the relative displacement between the second circuit board and the housing 10 is usually limited, so the first circuit board can be fixed by screws passing through the second circuit board.
- the circuit board is fixed on the casing 10 so as to restrict the relative displacement between the first circuit board and the casing 10 or between the first circuit board and the second circuit board.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the difference between the first circuit board and the second circuit board can be reduced.
- the available connection space between the electronic component and the first circuit board and/or the second circuit board is increased, and the thickness of the electronic device is reduced.
- the first circuit board includes a first via hole in contact with the first screw, and a material of the first via hole is a thermally conductive material.
- the first circuit board 401 includes a conductive layer and an insulating layer that are stacked, and the first via 431 may be used to realize electrical connection between different conductive layers in the first circuit board. Since the first through hole 431 can be in contact with the first screw 401 (such as the nut portion of the first screw 401), the heat emitted by the electronic component can be transferred to the first screw 401 through the first through hole 431, and then the first screw 401 A screw 411 conducts heat away, for example, to the housing 10.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the second circuit board includes a second via hole in contact with the housing, and a material of the second via hole is a thermally conductive material.
- the second circuit board 402 includes a conductive layer and an insulating layer that are stacked, and the second via 432 can be used to realize electrical connections between different conductive layers in the second circuit board. Since the second through hole 432 can be in contact with the housing 10 (such as the first support portion 412 ), the heat emitted by the electronic component can be transferred to the housing 10 through the second through hole 432.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the first via hole is in contact with a solder ball connected between the first circuit board and the second circuit board.
- the first via hole is in contact with a solder ball connected between the first circuit board and the second circuit board.
- the first via hole 431 can be in contact with the solder ball 420 connected between the first circuit board 401 and the second circuit board 402, and the second via hole 432 can be connected to the solder ball 420 connected to the first circuit board 401. It is in contact with the solder balls 420 between the second circuit board 402. Therefore, the heat generated by the electronic device on the first circuit board 401 can be conducted to the housing 10 through the first via 431, the solder balls, and the second via 432; the electronic device on the second circuit board 402 can be conducted The heat of the heat can be conducted to the first screw 401 through the second through hole 432, the solder ball, and the first through hole 431, so as to be conducted to the housing 10.
- the second through hole is located on the inner wall of the second hole on the second circuit board where the first screw passes.
- the first through hole is located on the inner wall of the first hole on the first circuit board where the first screw passes.
- the first screw passes through the first hole on the first circuit board and the second hole on the second circuit board, and the inner wall of the first hole and/or the inner wall of the second hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- Electronic components generate heat when they work, and part of the heat generated by the electronic components can be conducted out through the circuit board. Since the inner wall of the first hole and/or the inner wall of the second hole is made of a thermally conductive material, the speed at which the heat on the circuit board is conducted to the housing 10 through the first screw can be increased, thereby reducing the risk of serious heat generation of the electronic device.
- the first circuit board 401 includes a first hole 433, and the second circuit board 402 includes a second hole 434.
- the first screw 411 passes through the first hole 433, the second hole 434, and the housing 10 in sequence. The internal thread fits.
- the inner wall of the first hole 433 and the inner wall of the second hole 434 may be via holes.
- the first via hole 431 is provided on the inner wall of the first hole 433 and the second via hole 432 is provided on the inner wall of the second hole 434.
- the first circuit board 401 includes a conductive layer and an insulating layer that are stacked. The thermal conductivity of the conductive layer is usually higher than that of the insulating layer.
- the heat generated by the electronic component 430 on the first circuit board 401 can be connected to the electronic component 430.
- the solder balls and the conductive layer on the first circuit board 401 are conducted to the first hole 433, and then the heat is conducted away by the first screw 411, for example, to the housing 10.
- the heat generated by the electronic component (not shown in FIG. 4) on the second circuit board 402 can be conducted to the second hole 434 through the solder balls connected to the electronic component and the conductive layer on the second circuit board 402, and then The heat is conducted away by the first screw 411, for example, to the housing 10.
- the electronic device further includes a second screw passing through the second circuit board to fix the second circuit board on the housing 10.
- connection between the second screw and the housing 10 can be achieved by providing an internal thread on the housing 10 or through a nut fixed on the housing 10 so as to restrict the relative displacement between the second circuit board and the housing 10.
- the housing 10 further includes an internal thread for mating with the second screw.
- the housing 10 shown in FIG. 4 includes a second support portion 414 that abuts on the side of the second circuit board 402 away from the first circuit board 401.
- the second support portion 414 includes an internal thread for connecting with a second screw 413.
- the second screw passes through the third hole on the second circuit board 402, and the inner wall of the third hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the third hole (not shown in FIG. 4) may be a through hole.
- the heat generated by the electronic components (not shown in FIG. 4) on the second circuit board 402 can be conducted to the third hole through the solder balls (not shown in FIG. 4) connecting the electronic components and the conductive layer on the second circuit board 402 , And then the second screw 413 conducts the heat away, for example, to the housing 10.
- the first screw is located away from the center of the first circuit board.
- the first screw may be located far away from the center of the first circuit board.
- the circuit assembly further includes a non-functional solder ball mechanically connected between the first circuit board and the second circuit board, and the non-functional solder ball is arranged around the first screw.
- non-functional solder balls refer to solder balls that are not electrically connected to a circuit board or electronic components, and are only used to mechanically connect two components together.
- a functional solder ball refers to a solder ball that can function as an electrical connection between two components.
- the A-A cross section shown in FIG. 4 is a cross section parallel to the first circuit board 401 or the second circuit board 402. Observing the A-A section, a schematic diagram of the distribution of solder balls 420 as shown in FIG. 5 can be obtained.
- the circle filled with a dot matrix in FIG. 5 is used to represent the functional solder balls 421.
- the black solid circle is used to indicate the non-functional solder ball 422, and the white solid circle is used to indicate the cross section of the first screw 411.
- the connection between the circuit board and the circuit board or between the circuit board and the electronic components is relatively unstable in sudden situations such as the drop of the electronic device. Once the functional solder balls are broken and disconnected Other failure phenomena will directly cause damage to electronic equipment. However, if the non-functional solder balls are set reasonably, the non-functional solder balls will break, disconnect and other failures in the sudden situation such as the drop of the electronic device, which will not affect the electrical performance of the electronic components and the circuit board, and the electronic device will still It can be used normally, so the non-functional solder balls can protect the functional solder balls.
- the first screw is usually arranged at or around a location where failure (such as damage, breakage, disconnection, etc.) is likely to occur. Therefore, the area around the first screw is usually a high-stress area. In some cases, even if the screw can improve the stability of the connection between the first circuit board and the second circuit board, the area close to the first screw still belongs to the area prone to failure such as breakage and disconnection.
- the functional solder balls are arranged near the first screw, which is not conducive to reducing the risk of falling damage to the electronic device. According to the foregoing description, even if the non-functional solder ball is damaged, it usually does not affect the normal use of the electronic device. Therefore, the non-functional solder ball can be arranged around the first screw.
- the second screw is used to fix the second circuit board on the housing 10.
- the second screw is usually set at or around a location that is prone to failure (such as breakage, breakage, disconnection, etc.).
- the area around the screw is usually a high stress area. Setting the functional solder ball directly near the first screw is not conducive to reducing the risk of falling damage to the electronic device. According to the foregoing description, even if the non-functional solder ball is damaged, it usually does not affect the normal use of the electronic device. Therefore, the non-functional solder ball can be arranged around the second screw.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the size of the non-functional solder ball is larger than the size of the functional solder ball, which can enhance the effect of the non-functional solder ball to protect the functional solder ball.
- the non-functional solder ball 422 is arranged around the first screw 411, and the size of the non-functional solder ball 422 is slightly larger than the size of the functional solder ball 421.
- the maximum stress of the solder ball 420 can be reduced from 1260Mpa to 345Mpa when the electronic device is dropped.
- the non-functional solder ball 422 is arranged around the first screw 411, the maximum stress that the solder ball 420 bears can be further reduced (from 345Mpa to 176Mpa).
- the first circuit board 401 is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board 601 is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 602 in FIG. 6 may be a frame board, and the electronic components 630 provided on the first circuit board 601 may be placed in the through holes 610 of the second circuit board 602. It can be seen that the scene of the example shown in FIG. 4 is slightly different from the scene shown in FIG. 6. In the scenario shown in FIG. 6, referring to the embodiment shown in FIG.
- a first screw 611 is provided in the electronic device, so that the first screw 611 passes through the second circuit board 602 to fix the first circuit board 601 to the housing. ⁇ 10 ⁇ Body 10.
- the embodiment shown in FIG. 4 restricts the relative displacement between the first circuit board and the housing 10 to indirectly restrict the relative displacement between the first circuit board and the second circuit board.
- the following examples list possible solutions for restraining the relative displacement between the first circuit board and the second circuit board.
- FIG. 7 shows an electronic device provided by an embodiment of this application.
- the electronic device includes a circuit assembly 700 and a housing 10.
- the circuit assembly 700 is located on one side of the housing 10.
- the circuit assembly 700 includes a first circuit board 701, a second circuit board 702, and solder balls 720 connected between the first circuit board 701 and the second circuit board 702.
- the second circuit board 702 may be a main board or a frame board.
- the first circuit board 701 is located on the side of the second circuit board 702 away from the housing 10.
- Electronic components may be provided on the first circuit board 701 and/or the second circuit board 702.
- the circuit assembly 700 includes a nut 712, and the nut 712 is located on a side of the second circuit board 702 away from the first circuit board 701.
- the circuit assembly 700 further includes a first screw 711 that passes through the first circuit board 701, the second circuit board 702 and the nut 712 to fix the first circuit board 701 on the second circuit board 702. That is to say, the first screw 711 can cooperate with the nut 712 fixed on the second circuit board 702 to restrict the relative displacement between the first circuit board 701 and the second circuit board 702. As shown in FIG. 7, the nut 712 can be fixed on the second circuit board 702 by a connecting material 715.
- the connecting material 715 may be, for example, a soldering material or an adhesive material.
- the height of the first screw 711 is generally greater than the sum of the thickness of the first circuit board 701, the thickness of the second circuit board 702, and the height of the connection space between the first circuit board 701 and the second circuit board 702.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the first circuit board and the second circuit board can be reduced
- the available connection space between the electronic component and the first circuit board and/or the second circuit board is increased, and the thickness of the electronic device is reduced.
- the electronic device further includes a second screw 713 passing through the second circuit board 702 to fix the second circuit board 702 on the housing 10.
- the housing 10 shown in FIG. 7 includes a second support portion 714 that abuts on the side of the second circuit board 702 away from the first circuit board 701.
- the second support portion 714 includes an internal thread for connecting with a second screw 713. Cooperate.
- the first circuit board 701 includes a first via hole contacting the first screw 711, and the material of the first via hole is a thermally conductive material.
- the second circuit board 702 includes a second via hole contacting the housing 10, and the material of the second via hole is a thermally conductive material.
- the second through hole is located on the inner wall of the second hole on the second circuit board where the first screw 711 passes through.
- the first through hole is located on the inner wall of the first hole on the first circuit board where the first screw 711 passes through.
- the first screw 711 passes through the first hole on the first circuit board 701 and the second hole on the second circuit board 702, and the inner wall of the first hole and/or the inner wall of the second hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the first hole may be a via hole.
- the inner wall of the second hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the second screw 713 passes through the third hole on the second circuit board 702, and the inner wall of the third hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the third hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the first screw 711 is located away from the center of the first circuit board 701. In other words, in order to reduce the damage rate of the solder balls located far away from the center of the first circuit board 701, the first screw 711 may be located far away from the center of the first circuit board 701.
- the circuit assembly 700 further includes a non-functional solder ball mechanically connected between the first circuit board 701 and the second circuit board 702, and the non-functional solder ball is arranged around the first screw 711. Providing non-functional solder balls around the first screw 711 can reduce the risk of damage to the functional solder balls.
- a non-functional solder ball can be arranged around the second screw 713, and the second screw 713 is used to fix the second circuit board 702 on the housing 10. Providing non-functional solder balls around the second screw 713 can reduce the risk of damage to the functional solder balls.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the nut 712 shown in FIG. 7 is located on the second circuit board 702 and on the side away from the first circuit board 701.
- the nut 712 can also be arranged on the first circuit board 701 and located on a side away from the second circuit board 702. That is, the first screw 711 passes through the second circuit board 702 and is matched with the nut 712 on the first circuit board 701 to restrict the relative displacement between the first circuit board 701 and the second circuit board 702.
- the first circuit board 701 is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board 801 is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 802 in FIG. 8 may be a frame board, and the electronic components 830 provided on the first circuit board 801 may be placed in the through holes 810 of the second circuit board 802. It can be seen that the scene of the example shown in FIG. 7 is slightly different from the scene shown in FIG. 8. In the scenario shown in FIG. 8, referring to the embodiment shown in FIG.
- a first screw 811 is provided in the electronic device or circuit assembly 800, so that the first screw 811 passes through the second circuit board 802 and passes through the second circuit board 802.
- the nut 812 on the circuit board 802 fixes the first circuit board 801 on the second circuit board 802.
- the difference from the example shown in FIG. 4 or FIG. 6 is that the example in FIG. 7 or FIG. 8 directly restricts the relative displacement between the first circuit board and the second circuit board through the first screw;
- the example shown in 4 or FIG. 6 is that the first circuit board is directly constrained on the housing by the first screw, thereby indirectly constraining the relative displacement between the first circuit board and the second circuit board. Due to the limited thickness of the second circuit board, in the case of using the first screw, it is also necessary to consider whether the screw locking force will affect the life of the second circuit board, that is, whether the second circuit board is affected by the existence of the first screw It cannot withstand the violent drop stress, so the locking force that the first screw can provide is relatively small.
- the strength of the housing is relatively high, and the life of the housing is hardly affected by the first screw. Therefore, in the scenario shown in FIG. 4 or FIG. 6, the first screw can provide stronger connection stability. Moreover, in the scenario shown in FIG. 4 or FIG. 6, the heat is beneficial to diffuse to the housing. However, in the scenario shown in FIG. 4 or FIG. 6, the first screw needs to be connected to the housing. Therefore, the installation of the first screw requires more space, which is not conducive to compact arrangement of electronic components in the electronic device; in FIG. 7 Or in the scenario shown in FIG. 8, the first screw does not need to be connected to the housing, so it takes up less space.
- the nut 712 shown in FIG. 7 is fixed on the second circuit board 702 by a connecting material 715.
- the connecting material shown in FIG. 7 may not be used when the first screw is used, as shown in FIG. 9.
- the nut 912 in FIG. 9 is located on the first circuit board 901 and located on the side away from the second circuit board 902, the first screw passes through the second circuit board 902, and the first circuit board 901 fits the nut 912 to restrain The relative displacement between the first circuit board 901 and the second circuit board 902.
- the connecting material 715 is used to fix the nut 712 on the second circuit board 702, which can speed up the processing efficiency of the circuit assembly 700.
- the nut 912 is suspended in the process of assembling the circuit assembly 900. First, the nut 912 and the first screw 911 need to be locked, and then the second screw 912 is locked, so the processing process Relatively complicated.
- the nut 912 shown in FIG. 9 is located on the first circuit board 901 and on the side away from the second circuit board 902.
- the nut 912 can also be arranged on the second circuit board 902 and located on a side away from the first circuit board 901. That is, the first screw 911 passes through the first circuit board 901, and the second circuit board 902 fits with the nut 912, thereby restricting the relative displacement between the first circuit board 901 and the second circuit board 902.
- the first circuit board 901 is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board 1001 is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 1002 in FIG. 10 may be a frame board, and the electronic components 1030 provided on the first circuit board 1002 may be placed in the through holes 1010 of the second circuit board 1002. It can be seen that the scene of the example shown in FIG. 9 is slightly different from the scene shown in FIG. 10. In the scenario shown in FIG. 10, referring to the embodiment shown in FIG.
- a first screw 1011 is provided in the electronic device or circuit assembly 1000, so that the first screw 1011 passes through the first circuit board 1001 and the second circuit board. 1002 cooperates with the nut 1012 to fix the first circuit board 1001 on the second circuit board 1002.
- the scene shown in FIG. 9 is slightly different from the scene shown in FIG. 10, those skilled in the art will think of adding the embodiment shown in FIG. 9 to the guidance and enlightenment presented in the embodiment shown in FIG. The scheme is applied to the scenario shown in Figure 10. Since FIG. 9 has described in detail the solution of improving the connection stability by setting the first screw, it will not be repeated here.
- FIG. 11 shows an electronic device provided by an embodiment of this application.
- the electronic device includes a circuit assembly 1100 and a housing 10.
- the circuit assembly 1100 is located on one side of the housing 10.
- the circuit assembly 1100 includes a first circuit board 1101, a second circuit board 1102, and solder balls 1120 connected between the first circuit board 1101 and the second circuit board 1102.
- the second circuit board 1102 may be a main board or a frame board.
- the first circuit board 1101 is located on the side of the second circuit board 1102 away from the housing 10.
- Electronic components may be provided on the first circuit board 1101 and/or the second circuit board 1102.
- the circuit assembly 1100 includes a connector 1116 fixed on the first circuit board 1101.
- the material of the connecting piece 1116 may be high-strength materials such as metal, such as stainless steel, cast iron, aluminum alloy, titanium alloy, and the like.
- the material of the connecting member 1116 can also be a heat-conducting material with higher strength.
- the connecting member 1116 includes a first portion 11162 and a second portion 11161.
- the first portion 11162 is located in the space between the first circuit board 1101 and the second circuit board 1102, and the second portion 11161 is located between the first circuit board 1101 and the second circuit board 1102.
- the space between the circuit boards 1102 is outside.
- the second part 11161 includes a hole for passing a screw.
- the space between the first circuit board 1101 and the second circuit board 1102 refers to that the first circuit board 1101 is projected to the second circuit board 1102 to obtain a first projected area, and the first projected area faces the first circuit board 1101 Extend an interval height to obtain a first space; the second circuit board 1102 is projected onto the first circuit board 1101 to obtain a second projection area, and the second projected area extends toward the second circuit board 1102 by an interval height to obtain a second space;
- the intersection of the space and the second space is the separation space between the first circuit board 1101 and the second circuit board 1102.
- the interval height is the interval distance between the first circuit board 1101 and the second circuit board 1102.
- the connecting member 1116 can be fixed on the first circuit board 1101 by welding, riveting, pasting, or the like.
- FIG. 11 shows an example in which the connecting member 1116 is fixed on the first circuit board 1101 through a soldering material 1122 (such as solder) and a filling material 1121.
- the present application does not limit the manner of fixing the connecting member 1116.
- the circuit assembly 1100 further includes a first screw 1111, the first screw 1111 passes through the second part 11161 of the connector 1116 and the second circuit board 1102, and is connected to the housing 10.
- the height of the connecting member 1116 should be smaller than the height of the interval between the first circuit board 1101 and the second circuit board 1102. For example, the height of the connecting member 1116 is equal to half the height of the interval.
- the connecting piece 1116 is fixed on the first circuit board 1101, and the second circuit board 1102 is usually fixed on the housing 10.
- the first screw 1111 can restrict the connection between the connecting piece 1116 and the housing 10. Displacement, thereby indirectly restricting the relative displacement between the first circuit board 1101 and the second circuit.
- Figure 12 shows three possible shapes of the connecting member 1116.
- the area filled with a dot matrix is used to represent the first circuit board 1101
- the area filled with diagonal lines is used to represent the first part 11162 of the connector 1116
- the black solid area is used to represent the second part 11161 of the connector 1116
- the solid area is used to indicate the hole for passing the first screw 1111 on the second part 11162 of the connecting member 1116.
- the bigger The application does not limit the shape of the connecting member 1116. It should be understood that, benefiting from the guidance presented in the foregoing description and related drawings, those skilled in the art will think of many improvements and other embodiments of the present application. Therefore, it should be understood that the present application is not limited to the specific embodiments disclosed.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the first circuit board and the second circuit board can be reduced.
- the available connection space between the two circuit boards increases the available connection space between the electronic component and the first circuit board and/or the second circuit board, and reduces the thickness of the electronic device. Since a part of the connecting member is located outside the space between the first circuit board and the second circuit board, the first screw is arranged on the outer periphery of the first circuit board. Studies have shown that at the moment the electronic device is dropped, the stress in the area close to the center of the first circuit board is smaller, and the stress in the area far away from the center of the first circuit board is larger. Therefore, keeping the first screw away from the center of the first circuit board can reduce the damage rate of the solder balls and improve the stability of the connection between the first circuit board and the second circuit board.
- the electronic device further includes a second screw 1113 that passes through the second circuit board 1102 and fixes the second circuit board 1102 to the housing 10.
- the housing 10 shown in FIG. 11 includes a second support portion 1114 that abuts on the side of the second circuit board 1102 away from the first circuit board 1101.
- the second support portion 1114 includes an internal thread for connecting with a second screw 1113. Cooperate.
- the first circuit board 1101 includes a first via hole contacting the first screw 1111, and a material of the first via hole is a thermally conductive material.
- the second circuit board 1102 includes a second via hole in contact with the housing 10, and the material of the second via hole is a thermally conductive material.
- the second through hole is located on the inner wall of the second hole on the second circuit board where the first screw 1111 passes through.
- the first through hole is located on the inner wall of the first hole on the first circuit board where the first screw 1111 passes through.
- the first screw 1111 passes through the second hole on the second circuit board 1102, and the inner wall of the second hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the second hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the second screw 1113 passes through the third hole on the second circuit board 1102, and the inner wall of the third hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the third hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the circuit assembly 1100 further includes a non-functional solder ball mechanically connected between the first circuit board 1101 and the second circuit board 1102, and the non-functional solder ball is arranged around the connector 1116. Providing non-functional solder balls around the connecting piece 1116 can reduce the risk of damage to the functional solder balls.
- non-functional solder balls may be arranged around the second screw 1113, and the second screw 1113 is used to fix the second circuit board 1102 to the housing 10. Providing non-functional solder balls around the second screw 1113 can reduce the risk of damage to the functional solder balls.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the embodiment shown in FIG. 11 indirectly restricts the relative displacement between the second circuit board 1102 and the first circuit board 1101 by connecting the first screw 1111 with the housing 10.
- the relative displacement between the second circuit board 1102 and the first circuit board 1101 can also be restricted by other methods.
- a nut can be fixed on the side of the second circuit board 1102 away from the first circuit board 1101, and the first screw 1111 passes through the second part 11161 of the connector 1116, the second circuit board 1102, and is connected to the second circuit board 1102.
- the nuts on the board 1102 are matched to restrict the relative displacement between the second circuit board 1102 and the first circuit board 1101.
- a nut can be fixed on the side of the second part 11161 of the connecting member 1116 away from the second circuit board 1102, and the first screw 1111 passes through the second circuit board 1102, the second part 11161 of the connecting member 1116, and is connected to the second part 11161 of the connecting member 1116.
- the nuts on the connecting member 1116 are matched to restrict the relative displacement between the second circuit board 1102 and the first circuit board 1101.
- the first screw 1111 can be passed through the second portion 11161 of the connecting piece 1116, the second circuit board 1102, and the nut in sequence, and fit with the nut, thereby constraining the second circuit board 1102 and the first circuit board 1101 The relative displacement between.
- the first screw 1111 can be passed through the second circuit board 1102, the second part 11161 of the connecting member 1116, and the nut in sequence, and matched with the nut, thereby constraining the second circuit board 1102 and the first circuit board 1101 The relative displacement between.
- FIG. 11 is to restrict the connection member 1116 through the first screw 1111 to restrict the connection between the first circuit board 1101 and the second circuit board 1102.
- the relative displacement of Fig. 4 or Fig. 6 is to directly constrain the first circuit board by the first screw, thereby constraining the relative displacement between the first circuit board and the second circuit board. Therefore, in the examples of FIGS. 4 and 6-10, because the first circuit board is directly constrained by the first screw, the strength requirement of the first circuit board is relatively high. In the example shown in FIG.
- the example shown in Figure 11 can reduce the thickness of the first circuit board, and provide more available space for the connection of electronic components and the circuit board, and the connection between the circuit board and the circuit board. , To further reduce the thickness of electronic equipment.
- the first circuit board is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 1302 in FIG. 13 may be a frame board, and the electronic components 1330 provided on the first circuit board 1301 may be placed in the through holes 1310 of the second circuit board 1302. It can be seen that the scene of the example shown in FIG. 11 is slightly different from the scene shown in FIG. 13. In the scenario shown in FIG. 13, referring to the embodiment shown in FIG.
- a first screw 1311 is provided in the electronic device or circuit assembly 1300, so that the first screw 1311 passes through the connector 1316 and the second circuit board 1302,
- the first circuit board 1301 is fixed on the housing 10.
- the first circuit board and the electronic components arranged on the first circuit board can be molded together, that is, a plastic packaging material Wrap the first circuit board on a side surface provided with electronic components and the electronic components provided on the side surface.
- the plastic packaging material can wrap a part or all of the side surface.
- the area filled with rectangles in FIG. 14 and FIG. 15 is the plastic packaging material 1450.
- the plastic packaging material can improve the stability of the connection between the first circuit board and the electronic components.
- FIG. 16 shows an electronic device provided by an embodiment of this application.
- the electronic device includes a circuit assembly 1600 and a housing 10.
- the circuit assembly 1600 is located on one side of the housing 10.
- the circuit assembly 1600 includes a first circuit board 1601, a second circuit board 1602, and solder balls 1620 connected between the first circuit board 1601 and the second circuit board 1602.
- the second circuit board 1602 may be a main board or a frame board.
- the first circuit board 1601 is located on the side of the second circuit board 1602 away from the housing 10.
- Electronic components may be provided on the first circuit board 1601 and/or the second circuit board 1602.
- the circuit assembly 1600 includes a connecting member 1616 fixed on the first circuit board 1601, and the connecting member 1616 includes a hole for passing a screw.
- the material of the connecting member 1616 may be metal, such as stainless steel, cast iron, aluminum alloy, titanium alloy, and the like.
- the material of the connecting member 1616 may also be a high-strength thermal conductive material.
- the difference from the embodiment shown in FIG. 11 is that the connecting member 1616 is fixed on the side of the first circuit board 1601 away from the second circuit board 1602.
- the connecting member 1616 may be fixed on the first circuit board 1601 by welding, riveting, glue, etc.
- the method of fixing the connecting member 1616 is not limited in the present application.
- the circuit assembly 1600 further includes a first screw 1611, the first screw 1611 passes through the connector 1616 and the second circuit board 1602, and is connected to the housing 10.
- the connecting member 1616 is disposed outside the interval space between the first circuit board 1601 and the second circuit board 1602, the height of the connection may not be limited by the interval space between the first circuit board 1601 and the second circuit board 1602 .
- the height of the connecting member 1616 should not be greater than the height of the electronic component 1630 arranged on the first circuit board 1601.
- the connector 1616 is fixed on the first circuit board 1601, and the second circuit board 1602 is usually fixed on the housing 10.
- the first screw 1611 can restrict the connection between the connector 1616 and the housing 10. Displacement, thereby indirectly restricting the relative displacement between the first circuit board 1601 and the second circuit.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the first circuit board and the second circuit board can be reduced.
- the available connection space between the two circuit boards increases the available connection space between the electronic component and the first circuit board and/or the second circuit board, and reduces the thickness of the electronic device.
- the electronic device further includes a second screw 1613 passing through the second circuit board 1602 and fixing the second circuit board 1602 on the housing 10.
- the housing 10 shown in FIG. 16 includes a second support portion 1614 that abuts on the side of the second circuit board 1602 away from the first circuit board 1601.
- the second support portion 1614 includes an internal thread for connecting with a second screw 1613. Cooperate.
- the first circuit board 1601 includes a first via hole contacting the first screw 1616, and the material of the first via hole is a thermally conductive material.
- the second circuit board 1602 includes a second via hole contacting the housing 10, and the material of the second via hole is a thermally conductive material.
- the second through hole is located on the inner wall of the second hole on the second circuit board where the first screw 1616 passes through.
- the first through hole is located on the inner wall of the first hole on the first circuit board where the first screw 1616 passes through.
- the first screw 1611 passes through the second hole on the second circuit board 1602, and the inner wall of the second hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the second hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the second screw 1613 passes through the third hole on the second circuit board 1602, and the inner wall of the third hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the third hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the connecting member 1616 is arranged away from the center of the first circuit board 1601. That is, in order to reduce the damage rate of the solder balls located far away from the center of the first circuit board 1601, the first screw 1611 may be located far away from the center of the first circuit board 1601.
- the circuit assembly 1600 further includes non-functional solder balls mechanically connected between the first circuit board 1601 and the second circuit board 1602, and the non-functional solder balls are arranged around the connector 1616. Providing non-functional solder balls around the first screw 1611 can reduce the risk of damage to the functional solder balls.
- non-functional solder balls may be arranged around the second screw 1613, and the second screw 1613 is used to fix the second circuit board 1602 on the housing 10. Providing non-functional solder balls around the second screw 1613 can reduce the risk of damage to the functional solder balls.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the embodiment shown in FIG. 16 indirectly restricts the relative displacement between the second circuit board 1602 and the first circuit board 1601 by connecting the first screw 1611 with the housing 10.
- the relative displacement between the second circuit board 1602 and the first circuit board 1601 can also be restricted by other methods.
- a nut can be fixed on the side of the second circuit board 1602 away from the first circuit board 1601.
- the first screw 1611 passes through the connector 1616, the second circuit board 1602, and is connected to the nut on the second circuit board 1602. Cooperate, thereby restricting the relative displacement between the second circuit board 1602 and the first circuit board 1601.
- a nut can be fixed on the side of the connecting piece 1616 away from the second circuit board 1602.
- the first screw 1611 passes through the second circuit board 1602 and the connecting piece 1616, and is matched with the nut on the connecting piece 1616 to restrain The relative displacement between the second circuit board 1602 and the first circuit board 1601.
- the first screw 1611 can be passed through the connector 1616, the second circuit board 1602, and the nut in sequence, and matched with the nut, thereby restricting the relative displacement between the second circuit board 1602 and the first circuit board 1601 .
- the first screw 1611 can be passed through the second circuit board 1602, the connector 1616, and the nut in sequence, and matched with the nut, thereby restricting the relative displacement between the second circuit board 1602 and the first circuit board 1601 .
- FIG. 16 is to restrict the connection member 1616 through the first screw 1611 to restrict the connection between the first circuit board 1601 and the second circuit board 1602.
- the relative displacement of Fig. 4 or Fig. 6 is to directly constrain the first circuit board by the first screw, thereby constraining the relative displacement between the first circuit board and the second circuit board. Therefore, in the examples of FIGS. 4 and 6-10, because the first circuit board is directly constrained by the first screw, the strength requirement of the first circuit board is relatively high. In the example shown in FIG.
- the example shown in Figure 16 can reduce the thickness of the first circuit board, and provide more available space for the connection of electronic components and the circuit board, and the connection between the circuit board and the circuit board. , To further reduce the thickness of electronic equipment.
- the connecting piece 1616 is arranged outside the space between the first circuit board 1601 and the second circuit, and the height of the connecting member 1616 is relatively high (usually between 0.1-0.9 mm) , So the connection stability of the example shown in Figure 16 is relatively high. That is to say, under the condition of ensuring the use requirements, the example shown in Figure 16 can further reduce the thickness of the first circuit board or the second circuit board, which is the connection between the electronic component and the circuit board, and the connection between the circuit board and the circuit board. Provide more available space and further reduce the thickness of electronic devices.
- the first circuit board 1601 is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board 1701 is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 1702 in FIG. 17 may be a frame board, and the electronic components 1730 provided on the first circuit board 1701 may be placed in the through holes 1710 of the second circuit board 1702. It can be seen that the scene of the example shown in FIG. 16 is slightly different from the scene shown in FIG. 17. In the scenario shown in FIG. 17, referring to the embodiment shown in FIG.
- a first screw 1711 is provided in the electronic device or circuit assembly 1700, so that the first screw 1711 passes through the connector 1716 and the second circuit board 1702,
- the first circuit board 1701 is fixed on the housing 10.
- the first circuit board and the electronic components arranged on the first circuit board can be molded together, that is, a plastic packaging material Wrap the first circuit board on a side surface provided with electronic components and the electronic components provided on the side surface.
- the plastic packaging material can wrap a part or all of the side surface.
- the area filled with rectangles in Fig. 18 and Fig. 19 is the plastic packaging material 1850.
- the plastic packaging material can improve the stability of the connection between the first circuit board and the electronic component.
- the plastic packaging material 1850 can wrap a part of the connecting member 1816, as shown in FIGS. 18 and 19. Wrap a part of the connecting piece 1816 in the plastic encapsulation material, which can improve the connection stability between the connecting piece 1816 and the first circuit board.
- FIG. 20 shows an electronic device provided by an embodiment of this application.
- the electronic device includes a circuit assembly 2000 and a housing 10.
- the circuit assembly 2000 is located on one side of the housing 10.
- the circuit assembly 2000 includes a first circuit board 2001, a second circuit board 2002, and solder balls 2020 connected between the first circuit board 2001 and the second circuit board 2002.
- the second circuit board 2002 may be a main board or a frame board.
- the first circuit board 2001 is located on the side of the second circuit board 2002 away from the housing 10.
- Electronic components 2030 are provided on the first circuit board 2001.
- the first circuit board 2001 is provided with a plastic packaging material 2050 (also called a connector, which is used to connect the first circuit board 2001 with the electronic components 2030 provided on the first circuit board 2001), and the plastic packaging material 2050 is used.
- the first circuit board 2001 and the electronic components 2030 disposed on the first circuit board 2001 are wrapped, that is, the plastic encapsulating material 2050 wraps one side of the first circuit board 2001 with the electronic components 2030 and the electronic components 2030 disposed on the side.
- the molding material 2050 can wrap a part or all of the side surface.
- the circuit assembly 2000 further includes a first screw 2011 that passes through the plastic packaging material 2050 and the second circuit board 2002 and is connected to the housing 10.
- the plastic packaging material 2050 is fixed on the first circuit board 2001, and the second circuit board 2002 is usually fixed on the housing 10.
- the first screw 2011 can restrict the relative relationship between the plastic packaging material 2050 and the housing 10. Displacement, thereby indirectly restricting the relative displacement between the first circuit board 2001 and the second circuit.
- the first screw 2011 may or may not pass through the first circuit board 2001.
- part of the molding material projected on the first circuit board 2001 is represented by a pattern filled with rectangles
- part of the molding material projected on the area outside the first circuit board 2001 is represented by a black solid pattern, and a white solid
- the pattern is used to indicate the hole through which the first screw 2011 passes.
- the mechanical connection requirements of the solder balls between the first circuit board and the second circuit board can be reduced, for example, the first circuit board and the second circuit board can be reduced.
- the available connection space between the two circuit boards increases the available connection space between the electronic component and the first circuit board and/or the second circuit board, and reduces the thickness of the electronic device.
- the electronic device further includes a second screw 2013 passing through the second circuit board 2002 and fixing the second circuit board 2002 on the housing 10.
- the housing 10 shown in FIG. 20 includes a second support portion 2014 that abuts on the side of the second circuit board 2002 away from the first circuit board 2001, and the second support portion 2014 includes internal threads for connecting with the second screw 2013 Cooperate.
- the first circuit board 2001 includes a first via hole contacting the first screw 2020, and the material of the first via hole is a thermally conductive material.
- the second circuit board 2002 includes a second via hole contacting the housing 10, and the material of the second via hole is a thermally conductive material.
- the second through hole is located on the inner wall of the second hole on the second circuit board where the first screw 2020 passes through.
- the first through hole is located at the inner wall of the first hole on the first circuit board where the first screw 2020 passes through.
- the first screw 2011 passes through the first hole on the first circuit board 2001 and the second hole on the second circuit board 2002, and the inner wall of the first hole and/or the inner wall of the second hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the first hole may be a via hole.
- the inner wall of the second hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the second screw 2013 passes through the third hole on the second circuit board 2002, and the inner wall of the third hole includes a thermally conductive material.
- the thermally conductive material can be copper, silver, silicon, graphite and other materials.
- the inner wall of the third hole may be a via hole.
- a heat-conducting material is provided on the inner wall of the hole through which the screw passes, which facilitates the conduction of heat through the screw.
- the first screw 2011 is located away from the center of the first circuit board 2001.
- the first screw 2011 may be located far away from the center of the first circuit board 2001.
- the circuit assembly 2000 further includes a non-functional solder ball mechanically connected between the first circuit board 2001 and the second circuit board 2002, and the non-functional solder ball is arranged around the first screw 2011. Providing non-functional solder balls around the first screw 2011 can reduce the risk of damage to the functional solder balls.
- non-functional solder balls may be arranged around the second screw 2013, and the second screw 2013 is used to fix the second circuit board 2002 on the housing 10. Providing non-functional solder balls around the second screw 2013 can reduce the risk of damage to the functional solder balls.
- the size of the non-functional solder ball is larger than the size of the functional solder ball.
- the embodiment shown in FIG. 20 indirectly restricts the relative displacement between the second circuit board 2002 and the first circuit board 2001 by connecting the first screw 2011 with the housing 10.
- the relative displacement between the second circuit board 2002 and the first circuit board 2001 can also be restricted by other methods.
- a nut can be fixed on the side of the second circuit board 2002 away from the first circuit board 2001, and the first screw 2011 passes through the plastic encapsulation material 2050, the second circuit board 2002, and is connected to the nut on the second circuit board 2002.
- a nut can be fixed on the side of the plastic packaging material 2050 away from the second circuit board 2002.
- the first screw 2011 passes through the second circuit board 2002 and the plastic packaging material 2050, and is matched with the nut on the plastic packaging material 2050 to restrain The relative displacement between the second circuit board 2002 and the first circuit board 2001.
- the first screw 2011 can be passed through the plastic packaging material 2050, the second circuit board 2002, and the nut in sequence, and matched with the nut, thereby restricting the relative displacement between the second circuit board 2002 and the first circuit board 2001 .
- the first screw 2011 may be passed through the second circuit board 2002, the plastic packaging material 2050, and the nut in sequence, and matched with the nut, thereby restricting the relative displacement between the second circuit board 2002 and the first circuit board 2001 .
- FIG. 20 is to restrict the plastic material 2050 on the first circuit board 2001 by the first screw 2011, thereby restricting the first circuit board 2001
- the relative displacement between the first circuit board and the second circuit board 2002; and the example shown in FIG. 4 or FIG. 6 is to directly restrict the first circuit board through the first screw, thereby restricting the relative displacement between the first circuit board and the second circuit board . Therefore, in the examples shown in Figs. 4 and 6-10, the first circuit board is directly constrained by the first screw, so the strength requirement of the first circuit board is relatively high. In the example shown in FIG.
- the example shown in Figure 20 can reduce the thickness of the first circuit board, and provide more available space for the connection of electronic components and the circuit board, and the connection between the circuit board and the circuit board. , To further reduce the thickness of electronic equipment. However, wrapping the plastic packaging material on the first circuit board takes up space.
- FIG. 20 is to restrict the plastic encapsulation material 2050 on the first circuit board 2001 through the first screw 2011, thereby restricting the relative displacement between the first circuit board 2001 and the second circuit board 2002; and FIGS. 11,
- the example shown in 13-19 is that the first screw is used to constrain the connector fixed on the first circuit board, thereby constraining the relative displacement between the first circuit board and the second circuit board. Therefore, in the examples shown in FIGS. 11 and 13-19, the connection stability between the first circuit board and the second circuit board is limited by the connection stability between the connector and the second circuit board.
- the connection relationship between the plastic packaging material 2050 and the first circuit board 2001 is relatively stable. Therefore, in the example of FIG. 20, compared with the examples shown in FIGS. 11 and 13-19, the stability of the connection between the first circuit board and the second circuit is stronger. However, wrapping the plastic packaging material on the first circuit board takes up space.
- the first circuit board 2001 is a single-sided circuit board (for example, a single-sided LGA).
- the first circuit board 2201 is a double-sided circuit board (for example, a double-sided LGA).
- the second circuit board 2202 in FIG. 22 may be a frame board, and the electronic components 2230 provided on the first circuit board 2201 may be placed in the through holes 2210 of the second circuit board 2202. It can be seen that the scene of the example shown in FIG. 20 is slightly different from the scene shown in FIG. 22. In the scenario shown in FIG. 22, referring to the embodiment shown in FIG.
- a first screw 2211 is provided in the electronic device or circuit assembly 2200, so that the first screw 2211 passes through the plastic packaging material 2250 and the second circuit board 2202,
- the first circuit board 2201 is fixed on the second circuit board 2202.
- part or all of the nut 20111 of the first screw 2011 is outside the plastic sealing material 2050, which undoubtedly increases the space occupied by the circuit assembly 2000 and even increases the thickness of the electronic device.
- the nut 23111 of the first screw 2311 can be all set in the plastic packaging material 2350, as shown in FIGS. 23 and 24. Therefore, two holes need to be machined in the molding material 2350.
- the examples shown in FIGS. 23 and 24 have relatively more processing steps.
- plastic packaging material described in FIGS. 20 to 24 can be considered to be fixed on the first circuit board, and therefore the plastic packaging material described in FIGS. 20 to 24 can also be referred to as a connector fixed on the first circuit board.
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Abstract
一种电路组件,包括第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)以及第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202);焊球(702,1120,1620,2020),连接在第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)与第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202)之间;第一螺钉(611,811,911,1011,1111,1311,1611,1711,2011,2211,2311),穿过第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202),并且穿过第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)或固定在第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)上的连接件(1116,1316,1616,1716,1816);螺母(912,1012),与第一螺钉(611,811,911,1011,1111,1311,1611,1711,2011,2211,2311)配合。一种电子设备,包括:壳体(10);第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201);第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202),固定在壳体(10)上,且位于壳体(10)与第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201之间;焊球(702,1120,1620,2020),连接在第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)与第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202)之间;第一螺钉(611,811,911,1011,1111,1311,1611,1711,2011,2211,2311),穿过第二电路板(602,702,802,902,1002,1102,1302,1602,1702,2002,2202),并且穿过第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)或固定在第一电路板(601,701,801,901,1001,1101,1301,1601,1701,2001,2201)上的连接件(1116,1316,1616,1716,1816);其中,壳体(10)包括内螺纹,第一螺钉(611,811,911,1011,1111,1311,1611,1711,2011,2211,2311)与内螺纹配合,或者,电子设备还包括螺母(912,1012),第一螺钉(611,811,911,1011,1111,1311,1611,1711,2011,2211,2311)与螺母(912,1012)配合。目的在于提高电路板固定在电路板上的稳定性。
Description
本申请要求于2019年9月18日提交中国专利局、申请号为201910881310.1、申请名称为“电路组件以及电子设备”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。
本申请涉及电子设备领域,更为具体的,涉及电子设备领域中的电路组件以及电子设备。
为了追求用户体验,电子产品需要实现的功能越来越多,布置在电子产品内部的电子器件也就越来越多。因此,为了便于电路走线,可以在主板的部分区域固定电路板(例如焊盘栅格阵列(land grid array,LGA)),从而在主板局部区域增加可用于布线的导电层的数量。而电子产品的厚度是有限的,因此主板与电路板或电路板与电子元件之间可用连接空间就很小,主板与电路板或电路板与电子元件之间的连接关系相对不稳定,因此电子设备很容易被损坏。因此,如何加强主板与电路板或电路板与电子元件之间的连接稳定性是一个亟待解决的问题。
发明内容
本申请提供一种电路组件以及电子设备,目的在于提高电路板固定在电路板上的稳定性。
第一方面,提供了一种电路组件,包括:第一电路板以及第二电路板;焊球,连接在所述第一电路板与所述第二电路板之间;第一螺钉,穿过所述第二电路板,并且穿过所述第一电路板或固定在所述第一电路板上的连接件;螺母,与所述第一螺钉配合。
在本申请中,连接件指起到连接作用的部件。固定在第一电路板上的连接件可以用于连接第一电路板与第二电路板,或者用于连接第一电路板与第一电路板上设置的电子元件。
以塑封材料为例,在本申请的实施例中,塑封材料主要起到封装、包裹零件的作用,例如用于将第一电路板与第一电路板上设置的电子元件封装为一个整体。在特殊情况下,塑封材料能够起到连接被包裹的多个零件的作用,如连接第一电路板与第一电路板上设置的电子元件。为了描述更加清楚,在没有特殊说明的情况下,塑封材料主要用于封装零件,不属于本申请中的连接件。
在本申请实施例中,通过使螺钉穿过第二电路板、并且穿过第一电路板或第一电路板上固定的连接件,再与螺母配合,从而约束第一电路板与第二电路板之间的相对位移。并且,通过将第一电路板与螺母配合,可以降低第一电路板与第二电路板之间的焊球的机械 连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
进一步地,如果第一螺钉所直接约束的是连接件,那么对第一电路板的强度要求相对较低。也就是说,在保证使用要求的情况下,可以减小第一电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。
结合第一方面,在第一方面的某些实现方式中,所述螺母固定在所述第二电路板远离所述第一电路板的一侧。
在本申请实施例中,由于螺母相对于第二电路板的位置是固定的,因此可以通过机器一次性拧紧螺钉,有利于提高组装电路组件的自动化程度。
结合第一方面,在第一方面的某些实现方式中,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
连接件可以通过焊接、铆接、粘贴等方式固定在第一电路板上。
在本申请实施例中,将连接件设置在第一电路板与第二电路板之间,可以使电路组件的结构更加紧凑。
结合第一方面,在第一方面的某些实现方式中,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
连接件可以通过焊接、铆接、粘贴等方式固定在第一电路板上。
在本申请实施例中,由于连接件设置在第一电路板与第二电路之间的间隔空间之外,连接件的高度相对较高,因此第一电路板与第二电路之间的连接稳定性相对较高。也就是说,在保证使用要求的情况下,可以进一步减小第一电路板或第二电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。
结合第一方面,在第一方面的某些实现方式中,所述电路组件还包括:
塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面。
在本申请实施例中,通过塑封材料连接件与第一电路板之间的连接稳定性。
结合第一方面,在第一方面的某些实现方式中,所述连接件为包裹所述第一电路板的部分或全部侧面的塑封材料。
在本申请实施例中,塑封材料与第一电路板之间的连接关系相对稳定。因此,第一电路板与第二电路之间的连接稳定性较强。
结合第一方面,在第一方面的某些实现方式中,所述第一螺钉的位置远离所述第一电路板的中心。
通过研究表明,电子设备在跌落的一瞬间,靠近第一电路板中心的区域的应力较小,远离第一电路板中心的区域的应力较大。因此,为了降低远离第一电路板中心设置的焊球的损坏率,可以将第一螺钉设置在远离第一电路板中心的位置。
结合第一方面,在第一方面的某些实现方式中,所述焊球包括非功能性焊球以及功能性焊球,所述非功能性焊球围绕所述第一螺钉设置。
非功能性焊球是指不与电路板或电子元件电连接的焊球,仅用于将两个部件机械连接在一起。相应地,功能性焊球是指可以在两个部件之间起到电连接作用的焊球。
在本申请实施例中,如果不设置非功能性焊球,在电子设备跌落等突发情况下,电路板与电路板之间或者电路板与电子元件之间的连接相对不稳定,一旦功能性焊球发生断裂、脱离连接等失效现象,将直接导致电子设备损坏。而如果合理设置非功能性焊球,在电子设备跌落等突发情况下,非功能性焊球首先发生断裂、脱离连接等失效现象,不会影响电子元件以及电路板的电气性能,电子设备仍可以正常使用,因此非功能性焊球可以起到保护功能性焊球的作用。
结合第一方面,在第一方面的某些实现方式中,所述非功能性焊球的尺寸大于所述功能性焊球的尺寸。
焊球的尺寸越大,越不容易失效。因此非功能性焊球的尺寸大于功能性焊球的尺寸,可以增强非功能性焊球保护功能性焊球的效果。
结合第一方面,在第一方面的某些实现方式中,所述第一电路板包括与所述第一螺钉接触的第一导通孔,所述第一导通孔的材料为导热材料。
结合第一方面,在第一方面的某些实现方式中,所述第二电路板包括与所述壳体接触的第二导通孔,所述第二导通孔的材料为导热材料。
结合第一方面,在第一方面的某些实现方式中,所述电路组件还包括:导热材料,设置在所述第一螺钉所穿过的孔的内壁。
导热材料可以是铜、银、硅、石墨等材料。
所述第一螺钉所穿过的孔的内壁可以是导通孔。
在本申请实施例中,电子元件在工作时会发热,电子元件产生的一部分热量可以通过电路板传导出去。由于所述第一螺钉所穿过的孔的内壁是导热材料,因此可以提高电路板上的热量通过第一螺钉传导出去的速度,从而降低电子设备发热严重的风险。
第二方面,提供了一种电子设备,包括:壳体;第一电路板;第二电路板,固定在所述壳体上,且位于所述壳体与所述第一电路板之间;焊球,连接在所述第一电路板与所述第二电路板之间;第一螺钉,穿过所述第二电路板,并且穿过所述第一电路板或固定在所述第一电路板上的连接件;其中,所述壳体包括内螺纹,所述第一螺钉与所述内螺纹配合,或者,所述电子设备还包括螺母,所述第一螺钉与所述螺母配合。
在本申请实施例中,由于第二电路板通常是被固定在壳体上的,即第二电路板与壳体之间的相对位移通常是被限制的,因此可以通过穿过第二电路板的螺钉将第一电路板固定在壳体上,从而约束第一电路板与壳体之间或第一电路板与第二电路板之间的相对位移。并且,通过将第一电路板固定在壳体上,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
结合第二方面,在第二方面的某些实现方式中,所述螺母固定在所述第二电路板远离所述第一电路板的一侧。
结合第二方面,在第二方面的某些实现方式中,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
结合第二方面,在第二方面的某些实现方式中,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
结合第二方面,在第二方面的某些实现方式中,所述电子设备还包括:
塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面。
结合第二方面,在第二方面的某些实现方式中,所述连接件为包裹所述第一电路板的部分或全部侧面的塑封材料。
结合第二方面,在第二方面的某些实现方式中,所述第一螺钉的位置远离所述第一电路板的中心。
结合第二方面,在第二方面的某些实现方式中,所述焊球包括非功能性焊球以及功能性焊球,所述非功能性焊球围绕所述第一螺钉设置。
结合第二方面,在第二方面的某些实现方式中,所述非功能性焊球的尺寸大于所述功能性焊球的尺寸。
结合第二方面,在第二方面的某些实现方式中,所述第一电路板包括与所述第一螺钉接触的第一导通孔,所述第一导通孔的材料为导热材料。
结合第二方面,在第二方面的某些实现方式中,所述第二电路板包括与所述壳体接触的第二导通孔,所述第二导通孔的材料为导热材料。
结合第二方面,在第二方面的某些实现方式中,所述电路组件还包括:导热材料,设置在所述第一螺钉所穿过的孔的内壁。第三方面,提供了一种电路组件,包括:第一电路板;连接件,固定在所述第一电路板上,包括用于穿过螺钉的孔。
在本申请实施例中,在第一电路板上固定连接件,且该连接件上设置有用于穿过螺钉的孔,便于将第一电路板与其他电路板稳定地连接在一起。
结合第三方面,在第三方面的某些实现方式中,所述电路组件还包括:第二电路板,固定在所述第一电路板上,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
结合第三方面,在第三方面的某些实现方式中,所述电路组件还包括:第二电路板,固定在所述第一电路板上,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
结合第三方面,在第三方面的某些实现方式中,所述电路组件还包括:塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面,所述孔位于所述塑封材料之外。
结合第三方面,在第三方面的某些实现方式中,所述第一电路板包括用于接触所述螺钉的第一导通孔,所述第一导通孔的材料为导热材料。
结合第三方面,在第三方面的某些实现方式中,所述孔的内壁设置有导热材料。
结合第三方面,在第三方面的某些实现方式中,所述孔的位置远离所述第一电路板的中心。
图1是一种电子设备的示意性结构图。
图2是一种电路组件的示意性结构图。
图3是一种电路组件的示意性结构图。
图4是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图5是本申请实施例提供的一种非功能性焊球与功能性焊球的示意性结构图。
图6是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图7是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图8是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图9是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图10是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图11是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图12是本申请实施例提供的一种连接件的示意性结构图。
图13是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图14是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图15是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图16是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图17是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图18是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图19是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图20是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图21是本申请实施例提供的一种塑封材料的示意性结构图。
图22是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图23是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
图24是本申请实施例提供的一种安装在电子设备上的电路组件的示意性结构图。
下面将结合附图,对本申请中的技术方案进行描述。
图1是本申请实施例提供的一种电子设备100的结构示意图。
电子设备100可以是手机、平板电脑、电子阅读器、笔记本电脑、数码相机、车载设备、或可穿戴设备等设备。图1所示实施例以电子设备100是手机为例进行说明。
电子设备100包括壳体10、显示屏20和电路组件30。显示屏20和电路组件30安装于壳体10。具体的,壳体10包括边框和后盖。边框环绕在显示屏20的外周且环绕在后盖的外周,显示屏20与后盖间隔设置。显示屏20、边框、后盖之间形成的空腔用于放置电路组件30,壳体10可以用于固定电路组件30。电子设备100还包括用于为电路组件30供电的电源40。电源40例如可以是锂电子电池。
图2、图3分别是图1所示电子设备100的电路组件30的一个示例。电路组件30可以是印刷电路板组件(printed circuit board assembly,PCBA)。电路组件30包括印刷电路板(printed circuit board,PCB)以及与PCB电连接的至少一个电子元件。图1中的电源用于为该PCB和/或该至少一个电子元件供电。图2中的鼓形的图案表示用于机械固定和/或电连接的焊球320。应理解,本申请中描述的焊球实际是指机械连接和/或电连接电路板与电路板的焊材,或者是指机械连接和/或电连接电路板与电子元件的焊材。本申请中描述的焊球的真实形状未必是球形,其可以是多面体、球形、椭球形、圆台形、倒角形等。为了便于描述,本申请将各类形状的焊材统称为焊球。为了便于描述,在没有特殊说 明的情况下,焊球所起到的连接作用包括机械连接和/或电连接。即连接在电路板与电子元件之间的焊球,可以表示机械连接和/或电连接在电路板与电子元件之间的焊球;即连接在两个电路板之间的焊球,可以表示机械连接和/或电连接在该两个电路板之间的焊球。
如图2、图3所示,PCB例如可以是主板、框架板(frame board,FB)、焊盘栅格阵列(land grid array,LGA)等。其中,PCB 301可以通过螺钉340固定在壳体10上。PCB 301还包括可用于焊接的焊接区域(即焊盘)。电子元件可以通过焊接在PCB 301的焊接区域与PCB 301电连接,进一步地,与其他电子元件或PCB电连接。PCB 302还包括可用于焊接的焊接区域(即焊盘)。电子元件可以通过焊接在PCB 302的焊接区域与PCB 302电连接,进一步地,与其他电子元件或PCB电连接。PCB 302可以通过焊球320固定在PCB 301上。图2所示的PCB 301为一种主板,PCB 302为一种单面LGA(即PCB 302的一个面上设置有电子元件)。图3所示的PCB 301为一种框架板,PCB 302为一种双面LGA(即PCB 302的两个面上设置有电子元件)。
与PCB电连接的电子元件例如可以是电源管理芯片(power management unit,PMU)、射频功率放大器(radio frequency power amplifier,RF PA)、射频芯片(radio frequency integrated circuit,RF IC)、应用处理器(Application Processor,AP)、双倍数据率(double data rate,DDR)存储器、通用闪存存储(universal flash storage,UFS)、片上系统(system on chip,SOC)元件等。多个电子元件可以堆叠封装形成堆叠封装(Package on Package,POP)元件。图2所示的电子元件331可以是PMU,电子元件332可以是RF PA,电子元件333可以是RF IC,电子元件334可以是POP元件,该POP元件可以由AP与DDR存储器堆叠形成,电子元件335可以是UFS。图3所示的电子元件336可以是SOC元件,电子元件337可以是DDR存储器,电子元件338可以是UFS。其中,电子元件338可以设置在PCB 301的通孔310内。应理解,与PCB电连接的电子元件不限于本申请所公开的特定电子元件。
可以看出,电路板和电子元件之间通过焊球固定,电路板和电路板之间也通过焊球固定。焊球的高度、数量、尺寸等决定了电子元件与电路板之间的连接稳定性和电路板与电路板之间的连接稳定性。由于电子设备的厚度有限,而缩小电子元件所占用的空间的难度较大,因此用于连接电子元件和电路板的空间、以及用于连接电路板和电路板的空间较小,电子元件与电路板之间的连接稳定性和电路板与电路板之间的连接稳定性较差。
本申请实施例提供了一种电子设备以及电路组件,目的在于在有限的连接空间内提高电路板与电路板之间的连接稳定性。另外,使用本申请的方法还有望减少电路板与电路板之间的连接所占用的空间,因此可以增加电子元件和电路板之间的可用连接空间,从而提升电子元件与电路板之间的连接稳定性。另外,由于本申请的方法可以减少电路板与电路板之间的连接所占用的空间,因此可以缩小电子设备的厚度。
为了便于描述,本申请将电路板分为单面电路板和双面电路板,其中,单面电路板是指一个面上设置有电子元件的电路板,双面电路板是指两个面上设置有电子元件的电路板。
图4所示为本申请实施例提供的一种电子设备。电子设备包括电路组件400以及壳体10。电路组件400位于壳体10的一侧。电路组件400包括第一电路板401、第二电路板402以及连接在第一电路板401与第二电路板402之间的焊球420。其中,第二电路板402 可以是主板或框架板。第一电路板401位于第二电路板402远离壳体10的一侧。电子设备还包括第一螺钉411,该第一螺钉411穿过第二电路板402,用于约束第一电路板401与第二电路板402之间的相对位移。如图4所示,第一螺钉411依次穿过第一电路板401与第二电路板402,并与壳体10连接。也就是说,第二电路板402通常是被固定在壳体10上的,第一螺钉411可以通过约束第一电路板401与壳体10之间的相对位移,从而间接约束第一电路板401与第二电路之间的相对位移。在第一电路板401和/或第二电路板402上可以设置电子元件。如图4所示,第一电路板401上的电子元件430可以通过设置在第一电路板401与电子元件430之间的焊球实现与第一电路板401电连接,进一步通过设置在第一电路板401与第二电路板402之间的焊球420实现与第二电路板402电连接。
可以通过在壳体10上设置内螺纹,或通过在壳体10上固定的螺母,实现第一螺钉与壳体10连接,从而约束第一电路板与壳体10之间的相对位移。在一个示例中,壳体10还包括用于与第一螺钉配合的内螺纹。图4所示的壳体10包括抵靠在第二电路板402远离第一电路板401的一侧的第一支撑部412,该第一支撑部412包含内螺纹,用于与第一螺钉411配合。
第一螺钉411的高度可以根据第一电路板401的厚度、第二电路板402的厚度以及第一电路板401与第二电路板402之间的间隔高度确定。通常第一螺钉411的高度要大于第一电路板401的厚度、第二电路板402的厚度、第一电路板401与第二电路板402之间的间隔高度的总和。
由于第二电路板通常是被固定在壳体10上的,即第二电路板与壳体10之间的相对位移通常是被限制的,因此可以通过穿过第二电路板的螺钉将第一电路板固定在壳体10上,从而约束第一电路板与壳体10之间或第一电路板与第二电路板之间的相对位移。并且,通过将第一电路板固定在壳体10上,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
可选的,所述第一电路板包括与所述第一螺钉接触的第一导通孔,所述第一导通孔的材料为导热材料。
如图4所示,第一电路板401包括层叠设置的导电层和绝缘层,第一导通孔431可以用于实现第一电路板内的不同导电层之间的电连接。由于第一导通孔431可以与第一螺钉401(如第一螺钉401的螺帽部分)接触,因此电子元件发出的热量可以通过第一导通孔431传递至第一螺钉401,再由第一螺钉411将热量传导出去,例如传导至壳体10。导热材料可以是铜、银、硅、石墨等材料。
可选的,所述第二电路板包括与所述壳体接触的第二导通孔,所述第二导通孔的材料为导热材料。
如图4所示,第二电路板402包括层叠设置的导电层和绝缘层,第二导通孔432可以用于实现第二电路板内的不同导电层之间的电连接。由于第二导通孔432可以与壳体10(如第一支撑部412)接触,因此电子元件发出的热量可以通过第二导通孔432传递至至壳体10。导热材料可以是铜、银、硅、石墨等材料。
可选的,所述第一导通孔与连接在第一电路板与第二电路板之间的焊球接触。
可选的,所述第一导通孔与连接在第一电路板与第二电路板之间的焊球接触。
如图4所示,第一导通孔431可以与连接在第一电路板401与第二电路板402之间的焊球420接触,第二导通孔432可以与连接在第一电路板401与第二电路板402之间的焊球420接触。因此,第一电路板401上的电子设备所产生的热量可以通过第一导通孔431、焊球、第二导通孔432传导至壳体10;第二电路板402上的电子设备所产生的热量可以通过第二导通孔432、焊球、第一导通孔431传导至第一螺钉401,从而传导至壳体10。可选的,所述第二导通孔位于第一螺钉穿过第二电路板上的第二孔的内壁。
可选的,所述第一导通孔位于第一螺钉穿过第一电路板上的第一孔的内壁。
可选的,第一螺钉穿过第一电路板上的第一孔以及第二电路板上的第二孔,第一孔的内壁和/或第二孔的内壁包括导热材料。
导热材料可以是铜、银、硅、石墨等材料。电子元件在工作时会发热,电子元件产生的一部分热量可以通过电路板传导出去。由于第一孔的内壁和/或第二孔的内壁是导热材料,因此可以提高电路板上的热量通过第一螺钉传导至壳体10的速度,从而降低电子设备发热严重的风险。如图4所示,第一电路板401包括第一孔433,第二电路板402包括第二孔434,第一螺钉411依次穿过该第一孔433、第二孔434与壳体10上的内螺纹配合。其中,第一孔433的内壁、第二孔434的内壁可以是导通孔。也就是说,将第一导通孔431设置在第一孔433的内壁,将第二导通孔432设置在第二孔434的内壁。第一电路板401包括层叠设置的导电层和绝缘层,导电层的导热系数通常比绝缘层的导热系数高,第一电路板401上的电子元件430所产生的热量可以通过连接该电子元件430的焊球、第一电路板401上的导电层传导至第一孔433,再由第一螺钉411将热量传导出去,例如传导至壳体10。类似地,第二电路板402上的电子元件(图4未示出)所产生的热量可以通过连接该电子元件的焊球、第二电路板402上的导电层传导至第二孔434,再由第一螺钉411将热量传导出去,例如传导至壳体10。
可选的,电子设备还包括穿过第二电路板、将第二电路板固定在壳体10上的第二螺钉。
可以通过在壳体10上设置内螺纹,或通过在壳体10上固定的螺母,实现第二螺钉与壳体10连接,从而约束第二电路板与壳体10之间的相对位移。在一个示例中,壳体10还包括用于与第二螺钉配合的内螺纹。图4所示的壳体10包括抵靠在第二电路板402远离第一电路板401的一侧的第二支撑部414,该第二支撑部414包含内螺纹,用于与第二螺钉413配合。
可选的,第二螺钉穿过第二电路板402上的第三孔,第三孔的内壁包括导热材料。
导热材料可以是铜、银、硅、石墨等材料。第三孔(图4未示出)的内壁可以是导通孔。第二电路板402上的电子元件(图4未示出)所产生的热量可以通过连接电子元件的焊球(图4未示出)、第二电路板402上的导电层传导至第三孔,再由第二螺钉413将热量传导出去,例如传导至壳体10。
可选的,第一螺钉远离第一电路板中心设置。
通过研究表明,电子设备在跌落的一瞬间,靠近第一电路板中心的区域的应力较小,远离第一电路板中心的区域的应力较大。因此,为了降低远离第一电路板中心设置的焊球的损坏率,可以将第一螺钉设置在远离第一电路板中心的位置。
可选的,电路组件还包括机械连接在第一电路板与第二电路板之间的非功能性焊球, 所述非功能性焊球围绕第一螺钉设置。
在本申请中,非功能性焊球是指不与电路板或电子元件电连接的焊球,仅用于将两个部件机械连接在一起。相应地,功能性焊球是指可以在两个部件之间起到电连接作用的焊球。图4所示的A-A截面为平行于第一电路板401或第二电路板402的横截面。对A-A截面进行观察,可以得到如图5所示的焊球420分布示意图。图5中填充有点阵的圆形用于表示功能性焊球421。黑色实心圆形用于表示非功能性焊球422,白色实行圆形用于表示第一螺钉411的横断面。
如果不设置非功能性焊球,在电子设备跌落等突发情况下,电路板与电路板之间或者电路板与电子元件之间的连接相对不稳定,一旦功能性焊球发生断裂、脱离连接等失效现象,将直接导致电子设备损坏。而如果合理设置非功能性焊球,在电子设备跌落等突发情况下,非功能性焊球首先发生断裂、脱离连接等失效现象,不会影响电子元件以及电路板的电气性能,电子设备仍可以正常使用,因此非功能性焊球可以起到保护功能性焊球的作用。
第一螺钉通常设置在容易发生失效(如破损、断裂、脱离连接等)的位置或该位置的周围,因此第一螺钉周围的区域通常属于高应力区域。在一些情况下,即使螺钉能够提高第一电路板与第二电路板之间的连接稳定性,然而距离第一螺钉较近的区域仍然属于易发生断裂、脱离连接等失效现象的区域,直接将功能性焊球设置在第一螺钉附近,不利于降低电子设备跌落损坏的风险。根据前文的描述,非功能性焊球即使损坏,通常也不会影响电子设备正常使用,因此可以在第一螺钉周围设置非功能性焊球。
类似地,第二螺钉用于将第二电路板固定在壳体10上,第二螺钉通常设置在容易发生失效(如破损、断裂、脱离连接等)的位置或该位置的周围,因此第二螺钉周围的区域通常属于高应力区域。直接将功能性焊球设置在第一螺钉附近,不利于降低电子设备跌落损坏的风险。根据前文的描述,非功能性焊球即使损坏,通常也不会影响电子设备正常使用,因此可以在第二螺钉周围设置非功能性焊球。
可选的,非功能性焊球的尺寸大于功能性焊球的尺寸。
焊球的尺寸越大,越不容易失效。因此非功能性焊球的尺寸大于功能性焊球的尺寸,可以增强非功能性焊球保护功能性焊球的效果。
根据图5可以看出,非功能性焊球422围绕第一螺钉411设置,并且非功能性焊球422的尺寸略大于功能性焊球421的尺寸。通过模拟计算,可以发现如果设置了第一螺钉411,在电子设备跌落时可以将焊球420的承受的最大应力从1260Mpa降至345Mpa。而在第一螺钉411的周围设置有非功能性焊球422的情况下,可以进一步降低焊球420承受的最大应力(从345Mpa降至176Mpa)。
在图4所示的实施例中,第一电路板401为单面电路板(例如单面LGA)。而在图6所示的实施例中,第一电路板601为双面电路板(例如双面LGA)。其中,图6中的第二电路板602可以是框架板,而设置在第一电路板601上的电子元件630可以放置在第二电路板602的通孔610内。可以看出,图4所示的示例的场景与图6所示的场景略有不同。在图6所示的场景下,可以参照图4所示的实施例,在电子设备内设置第一螺钉611,使得第一螺钉611穿过第二电路板602将第一电路板601固定在壳体10上。图4所示的场景虽与图6的所示的场景略有不同,在受益于图4所示的实施例中呈现的指导启示下,本 领域技术人员将会想到将图4所示实施例的方案应用于图6所示的场景。由于图4已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
图4所示的实施例通过约束第一电路板与壳体10之间的相对位移,从而间接约束第一电路板与第二电路板之间的相对位移。除图4所示的方式外,还有其他方式可以实现约束第一电路板与第二电路板之间的相对位移。下面通过各个示例列举可能用于约束约束第一电路板与第二电路板之间的相对位移的方案。
图7所示为本申请实施例提供的一种电子设备。电子设备包括电路组件700以及壳体10。电路组件700位于壳体10的一侧。电路组件700包括第一电路板701、第二电路板702以及连接在第一电路板701与第二电路板702之间的焊球720。其中,第二电路板702可以是主板或框架板。第一电路板701位于第二电路板702远离壳体10的一侧。在第一电路板701和/或第二电路板702上可以设置电子元件。电路组件700包括螺母712,螺母712位于第二电路板702远离第一电路板701的一侧。电路组件700还包括第一螺钉711,该第一螺钉711穿过第一电路板701、第二电路板702以及螺母712,将第一电路板701固定在该第二电路板702上。也就是说,第一螺钉711可以与固定在第二电路板702上的螺母712配合,从而约束第一电路板701与第二电路板702之间的相对位移。如图7所示,可以通过连接材料715将螺母712固定在第二电路板702上,连接材料715例如可以是焊接材料或粘胶材料。第一螺钉711的高度通常大于第一电路板701的厚度、第二电路板702的厚度、第一电路板701与第二电路板702之间的连接空间的高度的总和。
因此,通过将第一电路板固定在第二电路板上,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
可选的,电子设备还包括穿过第二电路板702、将第二电路板702固定在壳体10上的第二螺钉713。图7所示的壳体10包括抵靠在第二电路板702远离第一电路板701的一侧的第二支撑部714,该第二支撑部714包含内螺纹,用于与第二螺钉713配合。
可选的,所述第一电路板701包括与所述第一螺钉711接触的第一导通孔,所述第一导通孔的材料为导热材料。
可选的,所述第二电路板702包括与所述壳体10接触的第二导通孔,所述第二导通孔的材料为导热材料。
可选的,所述第二导通孔位于第一螺钉711穿过第二电路板上的第二孔的内壁。
可选的,所述第一导通孔位于第一螺钉711穿过第一电路板上的第一孔的内壁。
可选的,第一螺钉711穿过第一电路板701上的第一孔以及第二电路板702上的第二孔,第一孔的内壁和/或第二孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第一孔的内壁可以是导通孔。第二孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第二螺钉713穿过第二电路板702上的第三孔,第三孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第三孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第一螺钉711远离第一电路板701中心设置。也就是说,为了降低远离第一电路板701中心设置的焊球的损坏率,可以将第一螺钉711设置在远离第一电路板701中 心的位置。
可选的,电路组件700还包括机械连接在第一电路板701与第二电路板702之间的非功能性焊球,所述非功能性焊球围绕第一螺钉711设置。在第一螺钉711周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,可以在第二螺钉713周围设置非功能性焊球,第二螺钉713用于将第二电路板702固定在壳体10上。在第二螺钉713周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,非功能性焊球的尺寸大于功能性焊球的尺寸。
图7所示的螺母712位于第二电路板702上且位于远离第一电路板701的一侧。除此以外,螺母712还可以设置在第一电路板701上且位于远离第二电路板702的一侧。即第一螺钉711穿过第二电路板702,与第一电路板701上的螺母712配合,从而约束第一电路板701与第二电路板702之间的相对位移。
在图7所示的实施例中,第一电路板701为单面电路板(例如单面LGA)。而在图8所示的实施例中,第一电路板801为双面电路板(例如双面LGA)。其中,图8中的第二电路板802可以是框架板,而设置在第一电路板801上的电子元件830可以被放置在第二电路板802的通孔810内。可以看出,图7所示的示例的场景与图8所示的场景略有不同。在图8所示的场景下,可以参照图7所示的实施例,在电子设备或电路组件800内设置第一螺钉811,使得第一螺钉811穿过第二电路板802,并通过第二电路板802上的螺母812,将第一电路板801固定在第二电路板802上。图7所示的场景虽与图8的所示的场景略有不同,在受益于图7所示的实施例中呈现的指导启示下,本领域技术人员将会想到将图7所示实施例的方案应用于图8所示的场景。由于图7已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
需要说明的是,与图4或图6所示示例不同之处在于,图7或图8的示例是通过第一螺钉直接约束第一电路板与第二电路板之间的相对位移;而图4或图6所示的示例是通过第一螺钉将第一电路板直接约束在壳体上,从而间接约束第一电路板与第二电路板之间的相对位移。由于第二电路板的厚度有限,在使用第一螺钉的情况下,还需要考虑螺钉锁紧力对第二电路板的寿命是否会产生影响,即第二电路板是否因第一螺钉的存在而无法承受猛烈的跌落应力,因此第一螺钉能够提供的锁紧力相对较小。而壳体的强度较高,壳体的寿命几乎不会受到第一螺钉的影响,因此在图4或图6所示的场景下,第一螺钉所能提供更强的连接稳定性。并且,在图4或图6所示的场景下,热量有利于向壳体扩散。然而,在图4或图6所示的场景下,第一螺钉需要与壳体相连,因此设置第一螺钉需要占用较多的空间,不利于在电子设备内紧凑排布电子元件;在图7或图8所示的场景下,第一螺钉不需要与壳体相连,因此占用空间较小。
图7所示的螺母712通过连接材料715固定在第二电路板702上。事实上,使用第一螺钉时可以不使用图7所示的连接材料,如图9所示。其中,图9中的螺母912位于第一电路板901上且位于远离第二电路板902的一侧,第一螺钉穿过第二电路板902、第一电路板901与螺母912配合,从而约束第一电路板901与第二电路板902之间的相对位移。在图7所示的示例中,使用连接材料715将螺母712固定在第二电路板702上,可以加快电路组件700的加工效率。如图7所示的电子设备上设置有2个第一螺钉711和2个第二 螺钉713,其中2个第一螺钉711用于约束第一电路板701与第二电路板702之间的相对位移,2个第二螺钉713用于约束第二电路板702与壳体10之间的相对位移。由于螺母712相对于壳体10的位置是固定的,因此可以通过机器一次性将4个螺钉拧紧。而如果是图9所示的示例,在组装电路组件900的过程中,螺母912是悬空的,首先需要将螺母912与第一螺钉911锁紧,然后再锁紧第二螺钉912,因此加工工序相对繁杂。
图9所示的螺母912位于第一电路板901上且位于远离第二电路板902的一侧。除此以外,螺母912还可以设置在第二电路板902上且位于远离第一电路板901的一侧。即第一螺钉911穿过第一电路板901、第二电路板902与螺母912配合,从而约束第一电路板901与第二电路板902之间的相对位移。
在图9所示的实施例中,第一电路板901为单面电路板(例如单面LGA)。而在图10所示的实施例中,第一电路板1001为双面电路板(例如双面LGA)。其中,图10中的第二电路板1002可以是框架板,而设置在第一电路板1002上的电子元件1030可以放置在第二电路板1002的通孔1010内。可以看出,图9所示的示例的场景与图10所示的场景略有不同。在图10所示的场景下,可以参照图9所示的实施例,在电子设备或电路组件1000内设置第一螺钉1011,使得第一螺钉1011穿过第一电路板1001、第二电路板1002与螺母1012配合,将第一电路板1001固定在第二电路板1002上。图9所示的场景虽与图10的所示的场景略有不同,在受益于图9所示的实施例中呈现的指导启示下,本领域技术人员将会想到将图9所示实施例的方案应用于图10所示的场景。由于图9已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
图11所示为本申请实施例提供的一种电子设备。电子设备包括电路组件1100以及壳体10。电路组件1100位于壳体10的一侧。电路组件1100包括第一电路板1101、第二电路板1102以及连接在第一电路板1101与第二电路板1102之间的焊球1120。其中,第二电路板1102可以是主板或框架板。第一电路板1101位于第二电路板1102远离壳体10的一侧。在第一电路板1101和/或第二电路板1102上可以设置电子元件。电路组件1100包括固定在第一电路板1101上的连接件1116。连接件1116的材质可以是金属等高强度材料,例如不锈钢、铸铁、铝合金、钛合金等。连接件1116的材质还可以是强度较高的导热材料。连接件1116包括第一部分11162以及第二部分11161,其中第一部分11162位于第一电路板1101与第二电路板1102之间的间隔空间之内,第二部分11161位于第一电路板1101与第二电路板1102之间的间隔空间之外。该第二部分11161包括用于穿过螺钉的孔。其中,第一电路板1101与第二电路板1102之间的间隔空间指的是,第一电路板1101投影至第二电路板1102得到第一投影面积,第一投影面积向着第一电路板1101延伸一个间隔高度,得到第一空间;第二电路板1102投影至第一电路板1101得到第二投影面积,第二投影面积向着第二电路板1102延伸一个间隔高度,得到第二空间;第一空间与第二空间的交集即为第一电路板1101与第二电路板1102之间的间隔空间。其中,该间隔高度为第一电路板1101与第二电路板1102之间的间隔距离。连接件1116可以焊接、铆接、粘贴等方式固定在第一电路板1101上。图11所示为连接件1116通过焊接材料1122(例如焊锡)以及填充材料1121固定在第一电路板1101上的示例,本申请对固定连接件1116的方式不作限定。电路组件1100还包括第一螺钉1111,该第一螺钉1111穿过连接件1116的第二部分11161、第二电路板1102,并与壳体10连接。连接件1116的高度应 当小于第一电路板1101与第二电路板1102之间的间隔高度。例如,连接件1116的高度等于该间隔高度的一半。也就是说,连接件1116固定在第一电路板1101上,第二电路板1102通常是被固定在壳体10上的,第一螺钉1111可以通过约束连接件1116与壳体10之间的相对位移,从而间接约束第一电路板1101与第二电路之间的相对位移。
图12所示为连接件1116的3种可能的形状。其中,填充有点阵的区域用于表示第一电路板1101,填充有斜直线的区域用于表示连接件1116的第一部分11162,黑色实心的区域用于表示连接件1116的第二部分11161,白色实心区域用于表示在连接件1116的第二部分11162上用于穿过第一螺钉1111的孔。第一部分11162投影至第一电路板1101的区域的面积越大,连接件1116与第一电路板1101之间的连接稳定性越牢靠,相应地连接件1116所占用的空间越大,布线难度也就越大。本申请对连接件1116的形状不作限定。应理解,在受益于前述描述和相关附图中呈现的指导启示下,本领域技术人员将会想到本申请的许多改进和其他实施例。因此,应理解,本申请不限于所公开的特定实施例。
因此,通过约束第一电路板与第二电路板之间的相对位移,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。由于连接件的一部分位于第一电路板与第二电路板之间的间隔空间之外,因此第一螺钉设置在第一电路板的外周。通过研究表明,电子设备在跌落的一瞬间,靠近第一电路板中心的区域的应力较小,远离第一电路板中心的区域的应力较大。因此,将第一螺钉远离第一电路板中心的位置,可以降低焊球的损坏率,提高第一电路板与第二电路板之间的连接稳定性。
可选的,电子设备还包括穿过第二电路板1102、将第二电路板1102固定在壳体10上的第二螺钉1113。图11所示的壳体10包括抵靠在第二电路板1102远离第一电路板1101的一侧的第二支撑部1114,该第二支撑部1114包含内螺纹,用于与第二螺钉1113配合。
可选的,所述第一电路板1101包括与所述第一螺钉1111接触的第一导通孔,所述第一导通孔的材料为导热材料。
可选的,所述第二电路板1102包括与所述壳体10接触的第二导通孔,所述第二导通孔的材料为导热材料。
可选的,所述第二导通孔位于第一螺钉1111穿过第二电路板上的第二孔的内壁。
可选的,所述第一导通孔位于第一螺钉1111穿过第一电路板上的第一孔的内壁。
可选的,第一螺钉1111穿过第二电路板1102上的第二孔,第二孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第二孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第二螺钉1113穿过第二电路板1102上的第三孔,第三孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第三孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,电路组件1100还包括机械连接在第一电路板1101与第二电路板1102之间的非功能性焊球,所述非功能性焊球围绕连接件1116设置。在连接件1116周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,可以在第二螺钉1113周围设置非功能性焊球,第二螺钉1113用于将第二电 路板1102固定在壳体10上。在第二螺钉1113周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,非功能性焊球的尺寸大于功能性焊球的尺寸。
图11所示的实施例通过将第一螺钉1111与壳体10连接,间接约束第二电路板1102与第一电路板1101之间的相对位移。除了图11所示的方式以外,还可以通过其他方式约束第二电路板1102与第一电路板1101之间的相对位移。在一个示例中,可以在第二电路板1102远离第一电路板1101的一侧固定螺母,第一螺钉1111穿过连接件1116的第二部分11161、第二电路板1102,并与第二电路板1102上的螺母配合,从而约束第二电路板1102与第一电路板1101之间的相对位移。在一个示例中,可以在连接件1116的第二部分11161远离第二电路板1102的一侧固定螺母,第一螺钉1111穿过第二电路板1102、连接件1116的第二部分11161,并与连接件1116上的螺母配合,从而约束第二电路板1102与第一电路板1101之间的相对位移。在一个示例中,可以将第一螺钉1111依次穿过连接件1116的第二部分11161、第二电路板1102、螺母,并与该螺母配合,从而约束第二电路板1102与第一电路板1101之间的相对位移。在一个示例中,可以将第一螺钉1111依次穿过第二电路板1102、连接件1116的第二部分11161、螺母,并与该螺母配合,从而约束第二电路板1102与第一电路板1101之间的相对位移。
需要说明的是,与图4、图6-10所示示例不同之处在于,图11的示例是通过第一螺钉1111约束连接件1116从而约束第一电路板1101与第二电路板1102之间的相对位移;而图4或图6所示的示例是通过第一螺钉直接约束第一电路板,从而约束第一电路板与第二电路板之间的相对位移。因此,在图4、图6-10的示例中,由于第一螺钉所直接约束的第一电路板,因此对第一电路板的强度要求相对较高。而在图11所示的示例中,即使第一电路板1101的厚度有限,由于第一螺钉1111所直接约束的是连接件1116,因此对第一电路板1101的强度要求相对较低。也就是说,在保证使用要求的情况下,图11所示的示例可以减小第一电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。
在图11所示的实施例中,第一电路板为单面电路板(例如单面LGA)。而在图13所示的实施例中,第一电路板为双面电路板(例如双面LGA)。其中,图13中的第二电路板1302可以是框架板,而设置在第一电路板1301上的电子元件1330可以放置在第二电路板1302的通孔1310内。可以看出,图11所示的示例的场景与图13所示的场景略有不同。在图13所示的场景下,可以参照图11所示的实施例,在电子设备或电路组件1300内设置第一螺钉1311,使得第一螺钉1311穿过连接件1316、第二电路板1302,将第一电路板1301固定在壳体10上。图11所示的场景虽与图13的所示的场景略有不同,在受益于图11所示的实施例中呈现的指导启示下,本领域技术人员将会想到将图11所示实施例的方案应用于图13所示的场景。由于图11已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
进一步的,为了提高第一电路板与设置在第一电路板上的电子元件之间的稳定性,可以将第一电路板与设置在第一电路板上的电子元件一起塑封起来,即塑封材料包裹第一电路板上设置有电子元件的一个侧面以及该侧面上设置的电子元件。塑封材料可以包裹该侧面的一部分或全部。图14、图15中填充矩形的区域为塑封材料1450。通过塑封材料可以 提高第一电路板与电子元件之间的连接稳定性。
图16所示为本申请实施例提供的一种电子设备。电子设备包括电路组件1600以及壳体10。电路组件1600位于壳体10的一侧。电路组件1600包括第一电路板1601、第二电路板1602以及连接在第一电路板1601与第二电路板1602之间的焊球1620。其中,第二电路板1602可以是主板或框架板。第一电路板1601位于第二电路板1602远离壳体10的一侧。在第一电路板1601和/或第二电路板1602上可以设置电子元件。电路组件1600包括固定在第一电路板1601上的连接件1616,连接件1616包括用于穿过螺钉的孔。连接件1616的材质可以是金属,例如不锈钢、铸铁、铝合金、钛合金等。连接件1616的材质还可以是强度较高的导热材料。与图11所示的实施例不同的是,连接件1616固定在第一电路板1601远离第二电路板1602的一侧。连接件1616可以通过焊接、铆接、粘胶等方式固定在第一电路板1601上,本申请对固定连接件1616的方式不作限定。电路组件1600还包括第一螺钉1611,该第一螺钉1611穿过连接件1616、第二电路板1602,并与壳体10连接。由于连接件1616设置在第一电路板1601与第二电路板1602之间的间隔空间之外,因此连接的高度可以不受第一电路板1601与第二电路板1602之间的间隔空间的限制。通常情况下,连接件1616的高度应不大于设置在第一电路板1601上的电子元件1630的高度。也就是说,连接件1616固定在第一电路板1601上,第二电路板1602通常是被固定在壳体10上的,第一螺钉1611可以通过约束连接件1616与壳体10之间的相对位移,从而间接约束第一电路板1601与第二电路之间的相对位移。
因此,通过约束第一电路板与第二电路板之间的相对位移,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
可选的,电子设备还包括穿过第二电路板1602、将第二电路板1602固定在壳体10上的第二螺钉1613。图16所示的壳体10包括抵靠在第二电路板1602远离第一电路板1601的一侧的第二支撑部1614,该第二支撑部1614包含内螺纹,用于与第二螺钉1613配合。
可选的,所述第一电路板1601包括与所述第一螺钉1616接触的第一导通孔,所述第一导通孔的材料为导热材料。
可选的,所述第二电路板1602包括与所述壳体10接触的第二导通孔,所述第二导通孔的材料为导热材料。
可选的,所述第二导通孔位于第一螺钉1616穿过第二电路板上的第二孔的内壁。
可选的,所述第一导通孔位于第一螺钉1616穿过第一电路板上的第一孔的内壁。
可选的,第一螺钉1611穿过第二电路板1602上的第二孔,第二孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第二孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第二螺钉1613穿过第二电路板1602上的第三孔,第三孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第三孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,连接件1616远离第一电路板1601中心设置。也就是说,为了降低远离第一电路板1601中心设置的焊球的损坏率,可以将第一螺钉1611设置在远离第一电路板1601 中心的位置。
可选的,电路组件1600还包括机械连接在第一电路板1601与第二电路板1602之间的非功能性焊球,所述非功能性焊球围绕连接件1616设置。在第一螺钉1611周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,可以在第二螺钉1613周围设置非功能性焊球,第二螺钉1613用于将第二电路板1602固定在壳体10上。在第二螺钉1613周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,非功能性焊球的尺寸大于功能性焊球的尺寸。
图16所示的实施例通过将第一螺钉1611与壳体10连接,间接约束第二电路板1602与第一电路板1601之间的相对位移。除了图16所示的方式以外,还可以通过其他方式约束第二电路板1602与第一电路板1601之间的相对位移。在一个示例中,可以在第二电路板1602远离第一电路板1601的一侧固定螺母,第一螺钉1611穿过连接件1616、第二电路板1602,并与第二电路板1602上的螺母配合,从而约束第二电路板1602与第一电路板1601之间的相对位移。在一个示例中,可以在连接件1616远离第二电路板1602的一侧固定螺母,第一螺钉1611穿过第二电路板1602、连接件1616,并与连接件1616上的螺母配合,从而约束第二电路板1602与第一电路板1601之间的相对位移。在一个示例中,可以将第一螺钉1611依次穿过连接件1616、第二电路板1602、螺母,并与该螺母配合,从而约束第二电路板1602与第一电路板1601之间的相对位移。在一个示例中,可以将第一螺钉1611依次穿过第二电路板1602、连接件1616、螺母,并与该螺母配合,从而约束第二电路板1602与第一电路板1601之间的相对位移。
需要说明的是,与图4、图6-10所示示例不同之处在于,图16的示例是通过第一螺钉1611约束连接件1616从而约束第一电路板1601与第二电路板1602之间的相对位移;而图4或图6所示的示例是通过第一螺钉直接约束第一电路板,从而约束第一电路板与第二电路板之间的相对位移。因此,在图4、图6-10的示例中,由于第一螺钉所直接约束的第一电路板,因此对第一电路板的强度要求相对较高。而在图16所示的示例中,即使第一电路板1601的厚度有限,由于第一螺钉1611所直接约束的是连接件1616,因此对第一电路板1601的强度要求相对较低。也就是说,在保证使用要求的情况下,图16所示的示例可以减小第一电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。
需要说明的是,在图11、13-15的示例中,连接件的一部分设置在第一电路板与第二电路之间,因此连接件的高度相对有限(通常在0.05-0.2mm之间)。而在图16所示的示例中,连接件1616设置在第一电路板1601与第二电路之间的间隔空间之外,连接件1616的高度相对较高(通常在0.1-0.9mm之间),因此图16所示的示例的连接稳定性相对较高。也就是说,在保证使用要求的情况下,图16所示的示例可以进一步减小第一电路板或第二电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。
在图16所示的实施例中,第一电路板1601为单面电路板(例如单面LGA)。而在图17所示的实施例中,第一电路板1701为双面电路板(例如双面LGA)。其中,图17中的第二电路板1702可以是框架板,而设置在第一电路板1701上的电子元件1730可以 被放置在第二电路板1702的通孔1710内。可以看出,图16所示的示例的场景与图17所示的场景略有不同。在图17所示的场景下,可以参照图16所示的实施例,在电子设备或电路组件1700内设置第一螺钉1711,使得第一螺钉1711穿过连接件1716、第二电路板1702,将第一电路板1701固定在壳体10上。图16所示的场景虽与图17的所示的场景略有不同,在受益于图16所示的实施例中呈现的指导启示下,本领域技术人员将会想到将图16所示实施例的方案应用于图17所示的场景。由于图16已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
进一步的,为了提高第一电路板与设置在第一电路板上的电子元件之间的稳定性,可以将第一电路板与设置在第一电路板上的电子元件一起塑封起来,即塑封材料包裹第一电路板上设置有电子元件的一个侧面以及该侧面上设置的电子元件。塑封材料可以包裹该侧面的一部分或全部。图18、图19中填充矩形的区域为塑封材料1850。通过塑封材料可以提高第一电路板与电子元件之间的连接稳定性。
进一步地,塑封材料1850可以包裹连接件1816的一部分,如图18、19所示。将连接件1816的一部分被包裹在塑封材料内,可以提高连接件1816与第一电路板之间的连接稳定性。
图20所示为本申请实施例提供的一种电子设备。电子设备包括电路组件2000以及壳体10。电路组件2000位于壳体10的一侧。电路组件2000包括第一电路板2001、第二电路板2002以及连接在第一电路板2001与第二电路板2002之间的焊球2020。其中,第二电路板2002可以是主板或框架板。第一电路板2001位于第二电路板2002远离壳体10的一侧。在第一电路板2001上设置有电子元件2030。第一电路板2001上设置有塑封材料2050(又可以被称作连接件,该连接件至少用于连接第一电路板2001与第一电路板2001上设置的电子元件2030),塑封材料2050用于包裹第一电路板2001以及设置在第一电路板2001上的电子元件2030,即塑封材料2050包裹第一电路板2001上设置有电子元件2030的一个侧面以及该侧面上设置的电子元件2030。塑封材料2050可以包裹该侧面的一部分或全部。电路组件2000还包括第一螺钉2011,该第一螺钉2011穿过塑封材料2050、第二电路板2002,并与壳体10连接。也就是说,塑封材料2050固定在第一电路板2001上,第二电路板2002通常是被固定在壳体10上的,第一螺钉2011可以通过约束塑封材料2050与壳体10之间的相对位移,从而间接约束第一电路板2001与第二电路之间的相对位移。第一螺钉2011可以穿过第一电路板2001也可以不穿过第一电路板2001。如图21所示,投影在第一电路板2001上的区域的部分塑封材料通过填充有矩形的图案表示,投影在第一电路板2001以外的区域的部分塑封材料通过黑色实心图案表示,白色实心图案用于表示第一螺钉2011所穿过的孔。
因此,通过约束第一电路板与第二电路板之间的相对位移,可以降低第一电路板与第二电路板之间的焊球的机械连接要求,例如,可以缩小第一电路板与第二电路板之间的可用连接空间,增大电子元件与第一电路板和/或第二电路板之间的可用连接空间,减小电子设备厚度等。
可选的,电子设备还包括穿过第二电路板2002、将第二电路板2002固定在壳体10上的第二螺钉2013。图20所示的壳体10包括抵靠在第二电路板2002远离第一电路板2001的一侧的第二支撑部2014,该第二支撑部2014包含内螺纹,用于与第二螺钉2013配合。
可选的,所述第一电路板2001包括与所述第一螺钉2020接触的第一导通孔,所述第一导通孔的材料为导热材料。
可选的,所述第二电路板2002包括与所述壳体10接触的第二导通孔,所述第二导通孔的材料为导热材料。
可选的,所述第二导通孔位于第一螺钉2020穿过第二电路板上的第二孔的内壁。
可选的,所述第一导通孔位于第一螺钉2020穿过第一电路板上的第一孔的内壁。
可选的,第一螺钉2011穿过第一电路板2001上的第一孔以及第二电路板2002上的第二孔,第一孔的内壁和/或第二孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第一孔的内壁可以是导通孔。第二孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第二螺钉2013穿过第二电路板2002上的第三孔,第三孔的内壁包括导热材料。导热材料可以是铜、银、硅、石墨等材料。第三孔的内壁可以是导通孔。在螺钉所穿过的孔的内壁设置导热材料,有利于通过螺钉将热量传导出去。
可选的,第一螺钉2011远离第一电路板2001中心设置。也就是说,为了降低远离第一电路板2001中心设置的焊球的损坏率,可以将第一螺钉2011设置在远离第一电路板2001中心的位置。
可选的,电路组件2000还包括机械连接在第一电路板2001与第二电路板2002之间的非功能性焊球,所述非功能性焊球围绕第一螺钉2011设置。在第一螺钉2011周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,可以在第二螺钉2013周围设置非功能性焊球,第二螺钉2013用于将第二电路板2002固定在壳体10上。在第二螺钉2013周围设置非功能性焊球,可以降低功能性焊球损坏的风险。
可选的,非功能性焊球的尺寸大于功能性焊球的尺寸。
图20所示的实施例通过将第一螺钉2011与壳体10连接,间接约束第二电路板2002与第一电路板2001之间的相对位移。除了图16所示的方式以外,还可以通过其他方式约束第二电路板2002与第一电路板2001之间的相对位移。在一个示例中,可以在第二电路板2002远离第一电路板2001的一侧固定螺母,第一螺钉2011穿过塑封材料2050、第二电路板2002,并与第二电路板2002上的螺母配合,从而约束第二电路板2002与第一电路板2001之间的相对位移。在一个示例中,可以在塑封材料2050远离第二电路板2002的一侧固定螺母,第一螺钉2011穿过第二电路板2002、塑封材料2050,并与塑封材料2050上的螺母配合,从而约束第二电路板2002与第一电路板2001之间的相对位移。在一个示例中,可以将第一螺钉2011依次穿过塑封材料2050、第二电路板2002、螺母,并与该螺母配合,从而约束第二电路板2002与第一电路板2001之间的相对位移。在一个示例中,可以将第一螺钉2011依次穿过第二电路板2002、塑封材料2050、螺母,并与该螺母配合,从而约束第二电路板2002与第一电路板2001之间的相对位移。
需要说明的是,与图4、图6-10所示示例不同之处在于,图20的示例是通过第一螺钉2011约束第一电路板2001上的塑封材料2050,从而约束第一电路板2001与第二电路板2002之间的相对位移;而图4或图6所示的示例是通过第一螺钉直接约束第一电路板,从而约束第一电路板与第二电路板之间的相对位移。因此,在图4、图6-10的示例中,由 于第一螺钉所直接约束的第一电路板,因此对第一电路板的强度要求相对较高。而在图16所示的示例中,即使第一电路板2001的厚度有限,由于第一螺钉2011所直接约束的是塑封材料2050,且塑封材料2050包裹电子元件2030,也就是说塑封材料2050的厚度较大,因此对第一电路板2001的强度要求相对较低。也就是说,在保证使用要求的情况下,图20所示的示例可以减小第一电路板的厚度,为电子元件与电路板的连接、电路板与电路板的连接提供更多的可用空间,进一步缩小电子设备的厚度。然而,在第一电路板上包裹塑封材料会占用空间。
需要说明的是,图20的示例是通过第一螺钉2011约束第一电路板2001上的塑封材料2050,从而约束第一电路板2001与第二电路板2002之间的相对位移;而图11、13-19所示的示例是通过第一螺钉约束固定在第一电路板上的连接件,从而约束第一电路板与第二电路板之间的相对位移。因此,在图11、13-19所示的示例中,第一电路板与第二电路板之间的连接稳定性受限于连接件与第二电路板之间的连接稳定性。而塑封材料2050与第一电路板2001之间的连接关系相对稳定。因此,图20的示例相对于图11、13-19所示的示例,第一电路板与第二电路之间的连接稳定性较强。然而,在第一电路板上包裹塑封材料会占用空间。
在图20所示的实施例中,第一电路板2001为单面电路板(例如单面LGA)。而在图22所示的实施例中,第一电路板2201为双面电路板(例如双面LGA)。其中,图22中的第二电路板2202可以是框架板,而设置在第一电路板2201上的电子元件2230可以放置在第二电路板2202的通孔2210内。可以看出,图20所示的示例的场景与图22所示的场景略有不同。在图22所示的场景下,可以参照图20所示的实施例,在电子设备或电路组件2200内设置第一螺钉2211,使得第一螺钉2211穿过塑封材料2250、第二电路板2202,将第一电路板2201固定在第二电路板2202上。图20所示的场景虽与图22的所示的场景略有不同,在受益于图20所示的实施例中呈现的指导启示下,本领域技术人员将会想到将图20所示实施例的方案应用于图22所示的场景。由于图20已详细描述了通过设置第一螺钉提高连接稳定性的方案,在此就不再赘述。
在图20所示的示例中,第一螺钉2011的螺帽20111部分或全部位于塑封材料2050之外,这无疑为增加电路组件2000的占用空间,甚至增加电子设备的厚度。为了减小电路组件的占用空间,可以将第一螺钉2311的螺帽23111部分全部设置在塑封材料2350内,如图23、24所示。因此,需要在塑封材料2350上加工出两个孔。与图20所示的示例相比,图23、24所示的示例的加工工序相对较多。
应理解,图20至24所述的塑封材料可以被认为是固定在第一电路板上,因此图20至24所述的塑封材料还可以被称作固定在第一电路板上的连接件。
实际组装电路组件或电子设备时,会考虑线路布线难易、电路组件占用空间、电路组件重点保护范围等因素。因此可以根据实际情况,并参照图4-图24所示示例,灵活选择如何约束第一电路板与第二电路板之间的相对位移。在受益于前述描述和相关附图中呈现的指导启示下,本领域技术人员将会想到本申请的许多改进和其他实施例。因此,应理解,本申请不限于所公开的特定实施例。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖 在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (26)
- 一种电路组件,其特征在于,包括:第一电路板以及第二电路板;焊球,连接在所述第一电路板与所述第二电路板之间;第一螺钉,穿过所述第二电路板,并且穿过所述第一电路板或固定在所述第一电路板上的连接件;螺母,与所述第一螺钉配合。
- 根据权利要求1所述的电路组件,其特征在于,所述螺母固定在所述第二电路板远离所述第一电路板的一侧。
- 根据权利要求1或2所述的电路组件,其特征在于,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
- 根据权利要求1或2所述的电路组件,其特征在于,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
- 根据权利要求3或4所述的电路组件,其特征在于,所述电路组件还包括:塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面。
- 根据权利要求1或2所述的电路组件,其特征在于,所述连接件为包裹所述第一电路板的部分或全部侧面的塑封材料。
- 根据权利要求1至6中任一项所述的电路组件,其特征在于,所述第一螺钉的位置远离所述第一电路板的中心。
- 根据权利要求1至7中任一项所述的电路组件,其特征在于,所述焊球包括非功能性焊球以及功能性焊球,所述非功能性焊球围绕所述第一螺钉设置。
- 根据权利要求8所述的电路组件,其特征在于,所述非功能性焊球的尺寸大于所述功能性焊球的尺寸。
- 根据权利要求1至9中任一项所述的电路组件,其特征在于,所述第一电路板包括与所述第一螺钉接触的第一导通孔,所述第一导通孔的材料为导热材料。
- 一种电子设备,其特征在于,包括:壳体;第一电路板;第二电路板,固定在所述壳体上,且位于所述壳体与所述第一电路板之间;焊球,连接在所述第一电路板与所述第二电路板之间;第一螺钉,穿过所述第二电路板,并且穿过所述第一电路板或固定在所述第一电路板上的连接件;其中,所述壳体包括内螺纹,所述第一螺钉与所述内螺纹配合,或者,所述电子设备还包括螺母,所述第一螺钉与所述螺母配合。
- 根据权利要求11所述的电子设备,其特征在于,所述螺母固定在所述第二电路 板远离所述第一电路板的一侧。
- 根据权利要求11或12所述的电子设备,其特征在于,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
- 根据权利要求11或12所述的电子设备,其特征在于,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
- 根据权利要求13或14所述的电子设备,其特征在于,所述电子设备还包括:塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面。
- 根据权利要求11或12所述的电子设备,其特征在于,所述连接件为包裹所述第一电路板的部分或全部侧面的塑封材料。
- 根据权利要求11至16中任一项所述的电子设备,其特征在于,所述第一螺钉的位置远离所述第一电路板的中心。
- 根据权利要求11至17中任一项所述的电子设备,其特征在于,所述焊球包括非功能性焊球以及功能性焊球,所述非功能性焊球围绕所述第一螺钉设置。
- 根据权利要求18所述的电子设备,其特征在于,所述非功能性焊球的尺寸大于所述功能性焊球的尺寸。
- 根据权利要求11至19中任一项所述的电子设备,其特征在于,所述第一电路板包括与所述第一螺钉接触的第一导通孔,所述第一导通孔的材料为导热材料。
- 一种电路组件,其特征在于,包括:第一电路板;连接件,固定在所述第一电路板上,包括用于穿过螺钉的孔。
- 根据权利要求21所述的电路组件,其特征在于,所述电路组件还包括:第二电路板,固定在所述第一电路板上,所述连接件包括第一部分以及第二部分,所述连接件的第一部分位于所述第一电路板与所述第二电路板之间的间隔空间之内,所述连接件的第二部分位于所述第一电路板与所述第二电路板之间的间隔空间之外。
- 根据权利要求21所述的电路组件,其特征在于,所述电路组件还包括:第二电路板,固定在所述第一电路板上,所述连接件位于所述第一电路板远离所述第二电路板的一侧。
- 根据权利要求21至23中任一项所述的电路组件,其特征在于,所述电路组件还包括:塑封材料,用于包裹部分所述连接件、所述第一电路板的部分或全部侧面,所述孔位于所述塑封材料之外。
- 根据权利要求21至24中任一项所述的电路组件,其特征在于,所述第一电路板包括用于接触所述螺钉的第一导通孔,所述第一导通孔的材料为导热材料。
- 根据权利要求21至25中任一项所述的电路组件,其特征在于,所述孔的位置远离所述第一电路板的中心。
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