Printed circuit module and electronic device including the same

An electronic device according to various embodiments may include: a display, a first circuit board disposed under the display, a first component and a second component disposed on one surface of the first circuit board, the first and second components each having different heights, a first interposer surrounding at least one side surface of the first component and disposed in a first region of the first circuit board, the first interposer part having a first height, a second interposer part surrounding at least one side surface of the second component and disposed in a second region of the first circuit board, the second interposer part having a second height different from the first height, a first second circuit board, at least a portion of which is spaced apart from the first region of the first circuit board, the first second circuit board including a first first portion bonded to the first interposer part, and a second second circuit board, at least a portion of which is spaced apart from the second region of the first circuit board, the second second circuit board including a first second portion bonded to the second interposer and spaced apart from the first second circuit board by a specified gap.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a national stage of International Application No. PCT/KR2021/010807 designating the United States, filed on Aug. 13, 2021, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2020-0103170, filed on Aug. 18, 2020, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties.

BACKGROUND

Field

The disclosure relates to a circuit board module and an electronic device including the circuit board module.

Description of Related Art

Due to the remarkable development of information communication technology and semiconductor technology, the distribution and use of various electronic devices are rapidly increasing. In particular, recent electronic devices are being developed such that users are capable of communicating with each other while carrying the electronic devices.

Typically, an electronic device may refer to a device that performs a specific function according to a program provided therein (e.g., an electronic scheduler, a portable multimedia reproducer, a mobile communication terminal, a tablet PC, an image/sound device, a desktop/laptop PC, or a vehicle navigation system), as well as a home appliance. The above-mentioned electronic devices may output, for example, information stored therein and/or transmitted thereto as sound or an image. As the degree of integration of electronic devices has increased and super-high-speed and large-capacity wireless communication has become popular, multiple functions have recently come to be provided in a single electronic device, such as a mobile communication terminal. For example, various functions, such as an entertainment function (e.g., a game function), a multimedia function (e.g., a music/video reproducing function), a communication and security function (e.g., mobile banking), a schedule management function, and an e-wallet function, are integrated in a single electronic device, in addition to a communication function. Such an electronic device has been miniaturized so that the user can conveniently carry the electronic device.

A printed circuit board disposed in an electronic device may be manufactured as a multilayer printed circuit board (e.g., a circuit board module) for mounting efficiency. Circuit boards disposed in a multilayer printed circuit board may be designed to have sizes corresponding to each other and to be arranged side by side. In such a structure, many empty spaces may exist according to various thicknesses of components mounted therein and may limit the miniaturization of the circuit board module and/or an electronic device. In addition, an interposer disposed in a multilayer printed circuit board may be designed in a closed loop shape depending on the shape of the electronic device/printed circuit board. Such an interposer may be vulnerable to bending (e.g., warpage or ball open) and/or cracking due to a high temperature occurring during a process because the interposer is not standardized in shape, has many inflection points, and has a large size.

SUMMARY

Embodiments of the disclosure provide separate interposers having different heights and circuit boards corresponding to the interposers may be implemented. Accordingly, by appropriately arranging components having various thicknesses, it is possible to efficiently utilize a mounting space in a circuit board module.

Embodiments of the disclosure provide a plurality of discontinuous and separated interposers, thereby improving electrical connection between stacked printed circuit boards, and bending (e.g., warpage), lifting, and/or cracking, which have occurred in one closed loop shape) can be reduced.

An electronic device according to an example embodiment may include: a display, a first circuit board disposed under the display, a first component and a second component disposed on one surface of the first circuit board, the first and second components each having different heights, a first interposer part surrounding at least one side surface of the first component and disposed in a first region of the first circuit board, the first interposer part having a first height, a second interposer partsurrounding at least one side surface of the second component and disposed in a second region of the first circuit board, the second interposer part having a second height different from the first height, a first second circuit board, at least a portion of which is disposed to be spaced apart from the first region of the first circuit board, the first second circuit board including a first first portion bonded to the first interposer part, and a second second circuit board, at least a portion of which is disposed to be spaced apart from the second region of the first circuit board, the second second circuit board including a first second portion bonded to the second interposer part and being spaced apart from the first second circuit board by a specified gap.

An electronic device according to an example embodiment may include: a display, a first circuit board disposed under the display, a first component and a second component disposed on one surface of the first circuit board, the first and second components each having different heights, a first second circuit board, at least a portion of which is disposed parallel with a first region of the first circuit board, a second second circuit board, at least a portion of which is disposed parallel with a second region of the first circuit board, a first interposer part disposed between the first region of the first circuit board and the first second circuit board, the first interposer partsurrounding at least two side surfaces of the first component and having a first height, and a second interposer part disposed between the second region of the first circuit board and the second second circuit board, the second interposer surrounding at least two side surfaces of the second component and having a second height different from the first height, wherein a first portion of the first second circuit board facing the second second circuit board may overlap at least a portion of a second portion of the second second circuit board facing the first second circuit board.

An electronic device according to an example embodiment may include: a display, a first circuit board disposed under the display, a second circuit board disposed parallel with the first circuit board between the display and the first circuit board, a first component and a second component disposed on the first circuit board, the first and second components each having different heights, a first third circuit board disposed between the first region of the first circuit board and the second circuit board and spaced apart from the first region by a first distance, a second third circuit board disposed between the second region of the first circuit board and the second circuit board and spaced apart from the second region by a second distance different from the first distance, a first interposer part surrounding at least one side surface of the first component and coupled between the first region of the first circuit board and the first third circuit board, a second interposer part surrounding at least one side surface of the second component and coupled between the second region of the first circuit board and the second third circuit board, a third interposer coupled between the first third circuit board and a third region of the second circuit board, and a fourth interposer coupled between the second third circuit board and a fourth region of the second circuit board.

An electronic device according to various example embodiments of the disclosure may provide a circuit board module including a plurality of divided interposers.

According to various example embodiments of the disclosure, since the arrangement of a plurality of discontinuously separated interposers and corresponding circuit boards is diversified, it is possible to efficiently arrange components having various thicknesses and to implement a multi-surface mounting structure having at least three surfaces.

According to various example embodiments of the disclosure, by overlapping and connecting structures of circuit boards having different heights, it is possible to minimize and/or reduce bending (e.g., warpage) of circuit boards occurring in a process, to improve shielding performance, and to reduce wiring loss between components.

The effects obtainable by this disclosure are not limited to those described above, and other effects, which are not described above, can be clearly understood by a person ordinarily skilled in the technical field, to which this disclosure belongs.

DETAILED DESCRIPTION

FIG.1is a block diagram illustrating an example electronic device in a network environment according to various embodiments.

FIG.2is a front perspective view illustrating an electronic device according to various embodiments.FIG.3is a rear perspective view illustrating the electronic device according to various embodiments.

Referring toFIGS.2and3, an electronic device101according to an embodiment may include a housing310including a front surface310A, a rear surface310B, and a side surface310C surrounding a space between the front surface310A and the rear surface310B. In an embodiment (not illustrated), the term “housing310” may refer to a structure forming a part of the front surface310A, the rear surface310B, and the side surface310C inFIG.2. According an embodiment, at least a portion of the front surface310A may be defined by a substantially transparent front plate302(e.g., a glass plate or a polymer plate including various coating layers). The rear surface310B may be defined by a rear plate311. The rear plate311may be made of, for example, glass, ceramic, a polymer, a metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of two or more of these materials. The side surface310C may be defined by a side bezel structure (or a “side member”)318coupled to the front plate302and the rear plate311and including a metal and/or a polymer. In various embodiments, the rear plate311and the side bezel structure318may be integrally configured, and may include the same material (e.g., a ceramic or metal material such as glass or aluminum).

In the illustrated embodiment, the front plate302may include, at the long opposite side edges thereof, two first edge regions310D, which are bent from the first surface310A toward the rear plate311and extend seamlessly. In the illustrated embodiment (seeFIG.3), the rear plate311may include, at the long opposite side edges thereof, two second edge regions310E, which are bent from the rear surface310B toward the front plate302and extend seamlessly. In various embodiments, the front plate302(or the rear plate311) may include only one of the first edge regions310D (or the second edge regions310E). In an embodiment, some of the first edge regions310D or the second edge regions310E may not be included. In the embodiments described above, when viewed from a side of the electronic device101, the side bezel structure318may have a first thickness (or width) on the side surface portions that do not include the first edge regions310D or the second edge regions310E described above, and may have a second thickness, which is smaller than the first thickness, on the side surface portions that include the first edge regions310D or the second edge regions310E.

According to an embodiment, the electronic device101may include at least one of a display device301(e.g., the display device160inFIG.1), audio modules303,307, and314(e.g., the audio module170inFIG.1), a sensor module (e.g., the sensor module176inFIG.1), camera modules305,312, and313(e.g., the camera module180inFIG.1), a key input device317(e.g., the input device150inFIG.1), and connector holes308and309(e.g., the connection terminal178inFIG.1). In various embodiments, in the electronic device101, at least one of the components (e.g., the connector hole309) may be omitted, or other components may be additionally included.

According to an embodiment, the display301may be visible through a substantial portion of, for example, the front plate302. In various embodiments, at least a portion of the display301may be visible through the front plate302defining the front surface310A and the first edge regions310D. In various embodiments, the edges of the display301may be configured to be substantially the same as the shape of the periphery of the front plate302adjacent thereto. In an embodiment (not illustrated), the distance between the periphery of the display301and the periphery of the front plate302may be substantially constant in order to enlarge the exposed area of the display301.

According to an embodiment, the surface (or the front plate302) of the housing310may include a screen display region defined as the display301is visually exposed. For example, the screen display region may include the front surface310A and the first edge regions310D.

In an embodiment (not illustrated), a part of the screen display region (e.g., the front surface310A and the first edge regions310D) of the display301may define a recess or an opening and may include at least one of an audio module314, a sensor module (not illustrated), and a light-emitting element (not illustrated), and a camera module305, which are aligned with the recess or the opening. In an embodiment (not illustrated), the rear surface of the screen display region of the display301may include at least one of the audio module314, the sensor module (not illustrated), the camera module305, the fingerprint sensor (not illustrated), and the light-emitting element (not illustrated).

According to an embodiment, one or more camera modules305and312may be disposed under the display301. For example, the first camera module305may be disposed on at least a partial region of the display301corresponding to a camera field of view (FOV). Since the first camera module305is disposed on at least a partial region of the display301corresponding to the camera field of view (FOV), the position of the first camera module305may not be visually distinguished (or exposed). According to an embodiment, when the display301is viewed from the first surface310A, the first camera module305may be disposed in a portion corresponding to the camera field of view (FOV), which is at least a part of the display301, and may acquire an image of an external subject without being visually exposed to the outside. For example, the first camera module305may be an under-display camera (UDC).

In an embodiment, the electronic device101may include a display (not illustrated), which is arranged to be slidable and provides a screen (e.g., a display region). For example, the display region of the electronic device101may be a region that is visually exposed and enables an image to be output. In an example, in the electronic device101, the display region is adjustable according to the movement of the sliding plate (not illustrated) or the movement of the display. For example, the electronic device101may include a rollable type electronic device that is configured such that at least a part (e.g., the housing310) of the electronic device101is at least partially slidably operated to achieve selective expansion of the display region. The above-described display may be referred to as, for example, a slide-out display or an expandable display.

In an embodiment (not illustrated), the display301may be coupled to or disposed adjacent to a touch-sensitive circuit, a pressure sensor capable of measuring a touch intensity (pressure), and/or a digitizer configured to detect a magnetic-field-type stylus pen. In various embodiments, at least some of the key input devices317may be disposed in the first edge regions310D and/or the second edge regions310E.

According to an embodiment, the audio modules303,307, and314may include a microphone hole303and speaker holes307and314. The microphone hole303may include a microphone disposed therein to acquire external sound, and in various embodiments, a plurality of microphones may be disposed therein to be able to detect the direction of sound. The speaker holes307and314may include an external speaker hole307and a phone call receiver hole314. In various embodiments, the speaker holes307and314and the microphone hole303may be implemented as a single hole, or a speaker (e.g., a piezo speaker) may be included without the speaker holes307and314. The audio modules303,307, and314are not limited to the above-described structure, and may be variously changed in design depending on the structure of the electronic device101, for example, by mounting only some of the audio modules or by adding new audio modules.

According to an embodiment, sensor modules (not illustrated) may generate an electrical signal or a data value corresponding to, for example, an internal operating state of the electronic device101or an external environmental state. The sensor modules (not illustrated) may include, for example, a first sensor module (e.g., a proximity sensor) and/or a second sensor module (e.g., a fingerprint sensor) disposed on the front surface310A of the housing310, and/or a third sensor module (e.g., an HRM sensor) and/or a fourth sensor module (e.g., a fingerprint sensor) disposed on the rear surface310B of the housing310. In various embodiments (not illustrated), the fingerprint sensor may be disposed not only on the front surface310A (e.g., the display301) of the housing310, but also on the rear surface310B. The electronic device101may further include at least one of sensor modules (not illustrated in the drawings), such as a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. The sensor modules are not limited to the above-described structure, and may be variously changed in design depending on the structure of the electronic device101, for example, by mounting only some of the sensor modules or by adding new sensor modules.

According to an embodiment, the camera modules305,312, and313may include, for example, a front camera module305disposed on the front surface310A of the electronic device101, a rear camera module312disposed on the rear surface310B, and/or a flash313. The camera modules305and312may include one or more lenses, an image sensor, and/or an image signal processor. The flash313may include, for example, a light-emitting diode or a xenon lamp. In various embodiments, two or more lenses (e.g., an infrared camera, a wide-angle lens, and a telephoto lens), and image sensors may be disposed on one surface of the electronic device101. The camera modules305,312, and313are not limited to the above-described structure, and may be variously changed in design depending on the structure of the electronic device101, for example, by mounting only some of the camera modules or by adding new camera modules.

According to an embodiment, the electronic device101may include a plurality of camera modules (e.g., a dual camera or a triple camera) having different properties (e.g., angles of view) or functions, respectively. For example, a plurality of camera modules305and312including lenses having different angles of view may be configured, and the electronic device101is capable of controlling the change of the angles of view of the camera modules305and312executed therein on the basis of a user's selection. For example, at least one of the plurality of camera modules305and312may be a wide-angle camera, and at least one of other camera modules may be a telephoto camera. Similarly, for example, at least one of the plurality of camera modules305and312may be a front camera, and at least one of other camera modules may be a rear camera. In addition, the plurality of camera modules305and312may include at least one of a wide-angle camera, a telephoto camera, or an infrared (IR) camera (e.g., a time-of-flight (TOF) camera, or a structured light camera). According to an embodiment, the IR camera may be operated as at least part of a sensor module. For example, the TOF camera may be operated as at least a part of a sensor module (not illustrated) for detecting a distance to a subject.

According to an embodiment, the key input devices317may be disposed on the side surface310C of the housing310. In an embodiment, the electronic device101may not include some or all of the above-mentioned key input devices317, and a key input device317, which is not included in the above-mentioned key input devices, may be implemented in another type, such as a soft key, on the display301. In various embodiments, a key input device may include a sensor module (not illustrated) disposed on the rear surface310B of the housing310.

According to an embodiment, light-emitting elements (not illustrated) may be disposed on, for example, the front surface310A of the housing310. The light-emitting elements (not illustrated) may provide, for example, information about the state of the electronic device101in an optical form. In an embodiment, the light-emitting elements (not illustrated) may provide a light source that is interlocked with, for example, the operation of the front camera module305. The light-emitting elements (not illustrated) may include, for example, an LED, an IR LED, and/or a xenon lamp.

According to an embodiment, the connector holes308and309may include, for example, a first connector hole308capable of accommodating a connector (e.g., a USB connector) for transmitting/receiving power and/or data to/from an external electronic device, and/or a second connector hole309capable of accommodating a connector (e.g., an earphone jack) for transmitting/receiving an audio signal to/from an external electronic device.

According to an embodiment, some camera modules305of the camera modules305and312and/or some sensor modules (not illustrated) of the sensor modules may be disposed to be exposed to the outside through at least a portion of the display301. For example, the camera modules305may include a punch hole camera disposed inside a hole or recess defined in the rear surface of the display301. According to an embodiment, the camera modules312may be disposed inside the housing310such that the lens is exposed to the rear surface310B of the electronic device101. For example, the camera modules312may be disposed on a printed circuit board (e.g., the printed circuit board340inFIG.4).

According to an embodiment, the camera modules305and/or the sensor modules may be disposed from the internal space of the electronic device101to the front plate302of the display301to come into contact with the external environment through a transparent region. In addition, some sensor modules (not illustrated) may be disposed in the internal space in the electronic device so as to implement the functions thereof without being visually exposed through the front plate302.

FIG.4is an exploded perspective view illustrating an electronic device according to various embodiments.

Referring toFIG.4, the electronic device101(e.g., the electronic device101inFIGS.1,2and3) according to various embodiments may include a side bezel structure331(e.g., the side bezel structure318inFIG.2), a first support member332, a front plate320(e.g., the front plate302inFIG.2), a display330(e.g., the display301inFIG.2), a printed circuit board340(e.g., a PCB, flexible PCB (FPCB), or a rigid flexible PCB (RFPCB)), a battery350(e.g., the battery189inFIG.1), a second support member360(e.g., the rear case), an antenna370(e.g., the antenna module197inFIG.1), and a rear plate380(e.g., the rear plate311inFIG.2). In various embodiments, in the electronic device101, at least one of the components (e.g., the first support member332or the second support member360) may be omitted, or other components may be additionally included. At least one of the components of the electronic device101may be the same as or similar to at least one of the components of the electronic device101inFIG.2orFIG.3, and a redundant description thereof will be omitted below.

According to various embodiments, the first support member332may be disposed inside the electronic device101to be connected to the side bezel structure331, or may be integrated with the side bezel structure331. The first support member332may be formed of, for example, a metal material and/or a non-metal material (e.g., a polymer). The display330may be coupled to one surface of the first support member332, and the printed circuit board340may be coupled to the other surface of the first support member332.

According to various embodiments, on the printed circuit board340, a processor, a memory, and/or an interface may be mounted. The processor may include various processing circuitry including, for example, one or more of, for example, a central processing unit, an application processor, a graphics processor, an image signal processor, a sensor hub processor, or a communication processor. According to various embodiments, the printed circuit board340may include a flexible printed circuit board type radio frequency cable (FRC). For example, the printed circuit board340may be disposed on at least a portion of the first support member332, and may be electrically connected to an antenna module (e.g., the antenna module197inFIG.1) and a communication module (e.g., the communication module190inFIG.1).

According to an embodiment, the memory (e.g., the memory130inFIG.1) may include, for example, a volatile memory or a nonvolatile memory.

According to an embodiment, the interface (e.g., the interface177inFIG.1) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and/or an audio interface. The interface may electrically or physically connect, for example, the electronic device101to an external electronic device, and may include a USB connector, an SD card/an MMC connector, or an audio connector.

According to various embodiments, the battery350(e.g., the battery189inFIG.1) is a device for supplying power to at least one component of the electronic device101, and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery350may be disposed on substantially the same plane as, for example, the printed circuit board340. The battery350may be integrally disposed inside the electronic device101, or may be detachably disposed on the electronic device101.

According to various embodiments, the second support member360(e.g., the rear case) may be disposed between the printed circuit board340and the antenna370. For example, the second support member360may include one surface to which at least one of the printed circuit board340and the battery350is coupled, and the other surface to which the antenna370is coupled.

According to various embodiments, the antenna370(e.g., the antenna module197inFIG.1) may be disposed between the rear plate380and the display350. The antenna370may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna370may perform short-range communication with, for example, an external electronic device, or may transmit/receive power required for charging to/from the external device in a wireless manner. In an embodiment, an antenna structure may be included with a part of the side bezel structure331and/or the first support member332, or a combination thereof.

According to various embodiments, the rear plate380may define at least a portion of the rear surface (e.g., the rear surface inFIG.3) of the electronic device101.

FIG.5is a diagram illustrating an example stacking structure in a circuit board module400according to various embodiments.FIG.6is a diagram illustrating an example stacking structure in a circuit board module400according to various embodiments.FIG.7is a diagram illustrating an example stacking structure in a circuit board module400according to various embodiments.FIG.8is a diagram illustrating a top surface of an interposer viewed through a circuit board module400according to various embodiments.

According to various embodiments, an electronic device (e.g., the electronic device101inFIGS.1,2,3and4) may include a housing (e.g., the housing310inFIGS.2A to3), a display (e.g., the display330inFIG.4), and a circuit board module400. The circuit board module400may include a first circuit board410, a second circuit board unit, interposer units (e.g., a first interposer part470and a second interposer part480) disposed between the first circuit board410and the second circuit board unit, and components450mounted on the first circuit board410and/or the second circuit board unit. According to an embodiment, the second circuit board unit may include a plurality of circuit boards, and the interposer unit may include a plurality of interposer parts.

According to an embodiment, the configuration of the circuit board module400inFIGS.5,6,7and8may be partially or entirely the same as or similar to that of the printed circuit board340inFIG.4.

InFIGS.5,6,7and8, “Z” may refer to the thickness direction of the circuit board module400. In addition, in an embodiment of the disclosure, “+Z” may refer a forward direction (e.g., a first direction) in which the circuit board module400faces a display (e.g., the display330inFIG.4), and “−Z” may refer to a rearward direction (e.g., a second direction) in which the circuit board module400faces a rear plate (e.g., the rear plate380inFIG.4).

According to various embodiments, the circuit board module400may include a plurality of stacked circuit boards. In each circuit board, one or more conductive layers (not illustrated) and one or more dielectric layers (not illustrated) may be alternately stacked. According to an embodiment, in the circuit board module400, the second circuit board unit may be stacked on the first circuit board410, and the interposer unit may be disposed between the first circuit board410and the second circuit board unit (e.g., a (2-1)thcircuit board420and a (2-2)thcircuit board430) to provide a space.

According to various embodiments, the first circuit board410may be disposed under a display (e.g., the display330inFIG.4), and a plurality of components450may be disposed on one surface of the first circuit board410. At least one of the plurality of components450may be a heat source generating heat, and may be at least one of, for example, a power management integrated circuit (PMIC), a power amplifier (PAM), an application processor (AP), a communication processor (CP), a charge integrated circuit (IC), a display driver integrated circuit (DDI), or a communication circuit (e.g., a transceiver, an active communication device, or a passive communication device).

According to an embodiment, a first component451may be disposed in a first region S1of the first circuit board410, and a second component452may be disposed in a second region S2of the first circuit board410. According to various embodiments, the first component451may be disposed in the first region S1of the first circuit board410, and the second component452may be disposed over the first region S1and the second region S2of the first circuit board410. According to various embodiments, the first component451may be disposed over the first region S1and the second region S2of the first circuit board410, and the second component452may be disposed in the second region S2of the first circuit board410. The first component451and the second component452may have different heights.

According to various embodiments, the second circuit board unit may be disposed between the display (e.g., the display330inFIG.4) and the first circuit board410, and may be disposed to be spaced apart from the first circuit board410by a predetermined distance by interposer parts. According to an embodiment, the second circuit board unit may include a (2-1)thcircuit board420and a (2-2)thcircuit board430, at least a portion of the (2-1)thcircuit board420may be located above the first region S1of the first circuit board410, and at least a portion of the (2-2)thcircuit board430may be located above the second region S2of the first circuit board410.

According to an embodiment, one or more components may be disposed on one surface of the (2-1)thcircuit board420and/or the (2-2)thcircuit board430. The one or more components may be one or more of, for example, a power management integrated circuit (PMIC), a power amplifier (PAM), an application processor (AP), a communication processor (CP), a charge integrated circuit (IC), a display driver integrated circuit (DDI), or a communication circuit (e.g., a transceiver, an active communication device, or a passive communication device). According to an embodiment, a third component453may disposed on one surface of the (2-1)thcircuit board420oriented in a first direction (+Z-axis direction) or one surface oriented in a second direction (−Z-axis direction). The third component453may be disposed to face the first region S1of the first circuit board410or the first component451disposed in the first region S1. A fourth component454may be disposed on one surface of the (2-2)thcircuit board430oriented in the first direction (+Z-axis direction) or one surface oriented in the second direction (−Z-axis direction). The fourth component454may be disposed to face the second region S2of the first circuit board410or the second component452disposed in the second region S2. According to this embodiment, the spaces in which components are disposed on the top and bottom surfaces of each of the stacked circuit boards can be expanded so that the internal mounting spaces of the electronic device can be efficiently used.

According to an embodiment, the (2-1)thcircuit board420may be disposed to be spaced apart from the first region S1of the first circuit board410by a first distance d1(e.g., height), and the (2-2)thcircuit board430may be disposed to be spaced apart from the second region S2of the first circuit board410by a second distance d2(e.g., height). The first distance d1and the second distance d2may be different from each other. For example, referring toFIG.5, when the height of the first component451disposed in the first region S1is greater than the height of the second component452disposed in the second region S2, the first distance d1may be designed to be greater than the second distance d2. As another example, referring toFIG.6, when the height of the first component451disposed in the first region S1is smaller than the height of the second component452disposed in the second region S2, the first distance d1may be designed to be smaller than the second distance d2. As still another example, referring toFIG.6, when the first component451is disposed in the first region S1of the first circuit board410, the second component452and the fourth component454are disposed between the second region S2of the first circuit board410and the (2-2)thcircuit board430to face each other, and the sum of the heights of the second component452and the fourth component454are greater than the height of the first component451, the second distance d2may be designed to be greater than the first distance d1. As still another example, when the first component451and the third component453are disposed to face each other between the first region S1of the first circuit board410and the (2-1)thcircuit board420, the second component452is disposed in the second region S2of the first circuit board410, and the sum of the heights of the first component451and the third component453is greater than that of the second component452, the first distance d1may be designed to be greater than the second distance d2.

According to an embodiment, the (2-1)thcircuit board420and the (2-2)thcircuit board430may be spaced apart from each other by a predetermined gap in the horizontal or vertical direction. For example, the (2-1)thcircuit board420, which is spaced apart from the first circuit board410by the first distance d1, and the (2-2)thcircuit board430, which is spaced apart from the first circuit board410by the second distance d2, may be disposed to be spaced apart from each other in the vertical direction (e.g., the first direction (+Z-axis direction) or the second direction (−Z-axis direction)). As still another example, when the (2-1)thcircuit board420is disposed to face only a partial region of the first region S1(e.g., a region that is not adjacent to the second region S2) and the (2-2)thcircuit board430is disposed to face only a partial region of the second region S2(e.g., a region that is not adjacent to the first region S1), the (2-1)thcircuit board420and the (2-2)thcircuit board430may be disposed to be spaced apart from each other in the horizontal direction (e.g., the third direction (X-axis direction)).

Referring toFIG.7, according to an embodiment, at least a partial region of the (2-1)thcircuit board420and at least a partial region of the (2-2)thcircuit board430may be disposed to overlap each other. For example, the (2-1)thcircuit board420and the (2-2)thcircuit board430may be spaced apart from the first circuit board410by different distances. When the (2-1)thcircuit board420is disposed to face the first region S1of the first circuit board410and the second region S2adjacent to the first region S1or the (2-2)thcircuit board430is disposed to face the second region S2of the first circuit board410and the first region S1adjacent to the second region S2, an end portion of the (2-1)thcircuit board420(e.g., a (1-2)thportion422) and an end portion of the (2-2)thcircuit board430(e.g., a (2-2)thportion432) may be disposed to overlap each other when the (2-1)thcircuit board420and/or the (2-2)thcircuit board430are viewed from above.

According to an embodiment, the (2-1)thcircuit board420may include a (1-1)thportion421and a (1-2)thportion422opposite to the (1-1)thportion421, the (1-1)thportion421may be a portion bonded to the first interposer part470through soldering, and the (1-2)thportion422may be a portion facing the (2-2)thcircuit board430. The (2-2)thcircuit board430may include a (2-1)thportion431and a (2-2)thportion432opposite to the (2-1)thportion431, the (2-1)thportion431may be a portion bonded to the second interposer part480through soldering, and the (2-2)thportion432may be a portion facing the (2-1)thcircuit board420. The (1-2)thportion422and the (2-2)thportion432may at least partially be spaced apart from and face each other in the horizontal direction, or may be spaced apart from and face each other in the vertical direction.

According to various embodiments, the interposer part may be disposed between the first circuit board410and the second circuit board unit. The interposer unit may include a plurality of portions, but may be manufactured generally in a closed loop shape. For example, the interposer unit may include a first interposer part470disposed in the first region S1of the first circuit board410and a second interposer part480disposed in the second region S2of the first circuit board410.

According to an embodiment, the first interposer part470may be disposed between the first region S1of the first circuit board410and the (2-1)thcircuit board420. For example, the first region S1of the first circuit board410may be disposed on one surface of the first interposer part470oriented in the second direction (−Z-axis direction), and the (2-1)thcircuit board420may be disposed on one surface of the first interposer part470oriented in the first direction (+Z-axis direction). According to an embodiment, the first interposer part470may be disposed along the first region S1of the first circuit board410/an edge of the (2-1)thcircuit board420. When the first component451is disposed on the top surface (the surface oriented in the first direction (+Z-axis direction)) of the first region S1of the first circuit board410or the third component453is disposed on the bottom surface (the surface oriented in the second direction (−Z-axis direction)) of the (2-1)thcircuit board420to face the first region S1, the first interposer part470may be disposed to surround the first component and/or the third component453to prevent and/or inhibit the first component and/or the third component453from being exposed to the outside.

According to an embodiment, the top surface (the surface oriented in the first direction (+Z-axis direction)) of the first interposer part470may be bonded to the (2-1)thcircuit board420using solder490, and the bottom surface (the surface oriented in the second direction (−Z-axis direction) of the first interposer part470may be bonded to the first circuit board410using solder490.

According to an embodiment, the second interposer part480may be disposed between the second region S2of the first circuit board410and the (2-2)thcircuit board430. For example, the second region S2of the first circuit board410may be disposed on one surface of the second interposer part480oriented in the second direction (−Z-axis direction), and the (2-2)thcircuit board430may be disposed on one surface of the second interposer part480oriented in the first direction (+Z-axis direction). According to an embodiment, the second interposer part480may be disposed along the second region S2of the first circuit board410/an edge of the (2-2)thcircuit board430. When the second component452is disposed on the top surface (the surface oriented in the first direction (+Z-axis direction)) of the second region S2of the first circuit board410or the fourth component454is disposed on the bottom surface (the surface oriented in the second direction (−Z-axis direction)) of the (2-2)thcircuit board430to face the second region S2, the second interposer part480may be disposed to surround the second component452and/or the fourth component454to prevent and/or inhibit the second component and/or the fourth component454from being exposed to the outside.

According to an embodiment, the top surface (the surface oriented in the first direction (+Z-axis direction)) of the second interposer part480may be bonded to the (2-2)thcircuit board430using solder490, and the bottom surface (the surface oriented in the second direction (−Z-axis direction) of the second interposer part480may be bonded to the first circuit board410using solder490.

According to various embodiments, the first interposer part470may include line portions471including a linear shape and opposite end portions472to be connected with the second interposer part480or another interposer part. The line portions471may include a linear structure and/or a curved structure. For example, the edge regions of the first region S1of the first circuit board410may be manufactured generally in a linear shape, and the line portions471may be provided in a shape corresponding to the edge regions and bonded to the same through solder.

According to an embodiment, the cross-sectional shape of the opposite end portions472of the first interposer part470may be manufactured in a shape having a flat surface or a stepped surface. However, the shapes of the line portions471and the opposite end portions472of the first interposer part470are not limited thereto and may be changed in design to have various shapes corresponding to the first circuit board410and the end portions of other interposer parts.

According to an embodiment, the second interposer part480may include line portions481including a linear shape and opposite end portions482to be connected with the first interposer part470or another interposer part. For example, the edge regions of the second region S2of the first circuit board410may be manufactured generally in a linear shape, and the line portions481may be provided in a shape corresponding to the edge regions and bonded to the same through solder. As still another example, the cross-sectional shape of the opposite end portions482may be manufactured in a shape including a flat surface or a stepped surface. However, the shapes of the line portions481and the opposite end portions482of the second interposer part480are not limited thereto and may be changed in design to have various shapes corresponding to the first circuit board410and the end portions of other interposer parts.

According to an embodiment, the opposite end portions472of the first interposer part470and the opposite end portions482of the second interposer part480may be disposed to face each other. For example, the first interposer part470may be manufactured generally in a “” shape, and the second interposer part480may be manufactured generally in an “” shape. The first and second interposer parts470and480may be connected to each other. According to an embodiment, one surface of the first end portion R1of the first interposer part470and one surface of the second end portion R2of the second interposer part480that face each other may include flat regions, respectively. For example, the flat region of the first end portion R1and the flat region of the second end portion R2may be disposed to be spaced apart from each other by a predetermined distance or more. According to an embodiment, the first end portion R1of the first interposer part470and the second end portion R2of the second interposer part480may be provided in stepped shapes, respectively. Each of the first end portion R1and the second end portion R2may include a dummy portion in which one region further protrudes, and may be connected to each other in a fitting manner According to an embodiment, the first end portion R1and the second end portion R2, each including a stepped shape, may at least partially overlap each other when viewed from a side of the first interposer part470or the second interposer part480.

In general, in a multilayer circuit board module, empty spaces may exist inside the module according to the thicknesses of various components, which may limit the miniaturization of the circuit board module. In addition, due to an interposer having a closed loop shape, bending and/or lifting may occur in a high-temperature section. With the circuit board module400according to the disclosure, it is possible to improve the mounting spaces inside a circuit board module and to prevent and/or reduce bending and/or lifting using separated circuit boards (e.g., the (2-1)thcircuit board420and the (2-2)thcircuit board430) and separated interposer parts (e.g., the first interposer part470and the second interposer part480).

FIG.9Ais a diagram illustrating an example stacking structure in a circuit board module400aaccording to various embodiments.FIG.9Bis a diagram illustrating a stacking structure in one of conventional circuit board modules40a.

FIG.10is a top view of the circuit board module400aofFIG.9Aaccording to various embodiments.

According to various embodiments, the circuit board module400amay include a first circuit board410, a (2-1)thcircuit board420, a (2-2)thcircuit board430, a first interposer part470disposed between the first circuit board410and the (2-1)thcircuit board420, and a second interposer part480disposed between the first circuit board410and the (2-2)thcircuit board430.

According to an embodiment, the configuration of the circuit board module400ainFIGS.9A and10may be partially or entirely the same as or similar to that of the printed circuit board400inFIGS.5,6,7and8. Hereinafter, a configuration different from that of the circuit board module400ofFIGS.5,6,7and8will be mainly described.

InFIGS.9A and9B, “Z” may refer of the thickness direction of the circuit board module400a. In addition, in an embodiment of the disclosure, “+Z” may refer to a forward direction (e.g., a first direction) in which the circuit board module400afaces a display (e.g., the display330inFIG.4), and “−Z” may refer to a rearward direction (e.g., a second direction) in which the circuit board module400afaces a rear plate (e.g., the rear plate380inFIG.4).

Referring toFIGS.9A,9B and10, at least a partial region of the (2-1)thcircuit board420and at least a partial region of the (2-2)thcircuit board430may be disposed to overlap each other. The overlapped partial regions are portions that may be bonded to each other through soldering, and may electrically connect the (2-1)thcircuit board420and the (2-2)thcircuit board430.

According to an embodiment, the (2-1)thcircuit board420may include a first portion420aadjacent to the (2-2)thcircuit board430and a second portion420bextending from the first portion420a. The second portion420bmay be a portion facing the first region S1of the first circuit board410, and the first portion420amay be a portion facing a portion of the second region S2of the first circuit board410. The (2-2)thcircuit board430may include a third portion430afacing the first portion420aand a fourth portion430bextending from the third portion430a. The third portion430aand the fourth portion430bmay be portions facing the second region S2of the first circuit board410. The first portion420aof the (2-1)thcircuit board420and the third portion430aof the (2-2)thcircuit board430are overlapping regions, and may be electrically connected to each other through soldering. As the solder510used in the soldering process, a low-temperature solder having a melting temperature of 200 degrees C. or lower may be used. According to an embodiment, the height of the first interposer part470may be different from the height of the second interposer part480. For example, the sum of the heights of components (e.g., the first component451) located on or above the first region S1of the first circuit board410may be smaller than the sum of the heights of the components (e.g., the second component452and the fourth component454) located on or above the second region S2of the first circuit board410(+Z-axis direction). In this case, the height of the second interposer part480may be greater than that of the first interposer part470, and the (2-2)thcircuit board430disposed on the second interposer part480may be located to be more spaced apart from the first circuit board410than from the (2-1)thcircuit board420.

According to an embodiment, the (2-1)thcircuit board420may include a first portion (not illustrated) adjacent to the (2-2)thcircuit board430and a second portion (not illustrated) extending from the first portion. The first portion and the second portion may be portions facing the first region S1of the first circuit board410. The (2-2)thcircuit board430may include a third portion (not illustrated) facing the first portion and a fourth portion (not illustrated) extending from the third portion. The fourth portion may be a portion facing the second region S2of the first circuit board410, and the third portion may be a portion facing a portion of the first region S1of the first circuit board410. The first portion of the (2-1)thcircuit board420and the third portion of the (2-2)thcircuit board430are overlapping regions, and may be electrically connected to each other through soldering. According to an embodiment, the height of the first interposer part470may be different from the height of the second interposer part480. For example, the sum of the height(s) of component(s) located on or above the first region S1of the first circuit board410may be greater than the sum of the height(s) of the component(s) located on or above the second region S2of the first circuit board410. In this case, the height of the first interposer part470may be greater than that of the second interposer part480, and the (2-1)thcircuit board420disposed on the first interposer part470may be located to be more spaced apart from the first circuit board410than from the (2-2)thcircuit board430.

According to various embodiments, the overlapping structure of the (2-1)thcircuit board420and the (2-2)thcircuit board430may shield electromagnetic interference (EMI) noise. The circuit board module400aincluding the overlapping structure of the (2-1)thcircuit board420and the (2-2)thcircuit board430and the connection structure through solder510is able to reduce a wiring loss by shortening a signal path in comparison with a conventional circuit board module (e.g., the circuit board40ainFIG.9). For example, a signal generated from a component mounted on the (2-2)thcircuit board430(e.g., the fourth component454inFIG.9A) may be transmitted to a component (e.g., the third component453inFIG.9A) mounted on the (2-1)thcircuit board420via the (2-2)thcircuit board430, the solder510, and the (2-1)thcircuit board420. In the conventional circuit board module40aaccording toFIG.9B, a signal generated from a component52mounted on the (2-2)thcircuit board43may be transmitted to the first circuit board41via the second interposer part48having a closed loop shape and soldered between the (2-2)thcircuit board43and the first circuit board41. Thereafter, the signal may be transmitted to a component51mounted on the (2-1)thcircuit board42via the first interposer part47having a closed loop shape and soldered between the (2-1)thcircuit board42and the first circuit board41.

FIG.11is a diagram illustrating an example stacking structure in a circuit board module400baccording to various embodiments.

FIG.12is a top view of the circuit board module400bofFIG.11according to various embodiments.

According to various embodiments, the circuit board module400bmay include a first circuit board410, a (2-1)thcircuit board420, a (2-2)thcircuit board430, a first interposer part470disposed between the first circuit board410and the (2-1)thcircuit board420, and a second interposer part480disposed between the first circuit board410and the (2-2)thcircuit board430.

According to an embodiment, the configuration of the circuit board module400binFIGS.11and12may be partially or entirely the same as or similar to that of the printed circuit board400inFIGS.5,6,7and8. Hereinafter, a configuration different from that of the circuit board module400ofFIGS.5,6,7and8will be mainly described.

InFIG.11, “Z” may refer to the thickness direction of the circuit board module400b. In addition, in an embodiment of the disclosure, “+Z” may refer to a forward direction (e.g., a first direction) in which the circuit board module400bfaces a display (e.g., the display330inFIG.4), and “−Z” may refer to a rearward direction (e.g., a second direction) in which the circuit board module400bfaces a rear plate (e.g., the rear plate380inFIG.4).

Referring toFIGS.11and12, the (2-1)thcircuit board420and the (2-2)thcircuit board430are spaced apart from each other, and respective end portions of thereof may be electrically connected to each other via a metal structure520.

According to an embodiment, the (2-1)thcircuit board420may include a first portion420aadjacent to the (2-2)thcircuit board430and a second portion420bextending from the first portion420a. The first portion420aand the second portion420bmay be portions facing the first region S1of the first circuit board410. The entire edge region of the bottom surface of the second portion420bmay be bonded to the first interposer part470through soldering, and the edge region of the bottom surface of the first portion420amay be partially bonded to the first interposer part470through soldering. The (2-2)thcircuit board430may include a third portion430afacing the first portion420aand a fourth portion430bextending from the third portion430a. The third portion430aand the fourth portion430bmay be portions facing the second region S2of the first circuit board410. The entire edge region of the bottom surface of the fourth portion430bmay be bonded to the second interposer part480through soldering, and the edge region of the bottom surface of the third portion430amay be partially bonded to the second interposer part480through soldering.

According to an embodiment, the first portion420aof the (2-1)thcircuit board420and the third portion430aof the (2-2)thcircuit board430may be disposed to be spaced apart from each other in the horizontal direction and/or the vertical direction, and may be electrically connected to each other via a metal structure520. The metal structure520may include a first bridge521, a second bridge522, and a connection portion523connecting the first bridge521and the second bridge522to each other. The first bridge521is disposed to be coupled to the top surface (the surface oriented in the first direction (+Z-axis direction)) of the first portion420aof the (2-1)thcircuit board420, and the second bridge522may be disposed to be coupled to the top surface (the surface oriented in the first direction (+Z-axis direction)) of the third portion430aof the (2-2)thcircuit board430. The connection portion523may have a length equal to or greater than a horizontal gap d5between the (2-1)thcircuit board420and the (2-2)thcircuit board430. The metal structure520may include a material using a metal element, such as Cu, Au, Ag, Ni, Zn, Mg, or Fe, as a mixture.

According to an embodiment, the height of the first interposer part470may be different from the height of the second interposer part480. For example, the sum of the heights of components (e.g., the first component451) located on or above the first region S1of the first circuit board410may be smaller than the sum of the heights of the components (e.g., the second component452and the fourth component454) located on or above the second region S2of the first circuit board410. In this case, the height of the second interposer part480may be greater than that of the first interposer part470, and the (2-2)thcircuit board430disposed on the second interposer part480may be located to be more spaced apart from the first circuit board410than from the (2-1)thcircuit board420. In the illustrated embodiment, in the metal structure520connecting the (2-1)thcircuit board420and the (2-2)thcircuit board430to each other, in order to maintain the connection portion523in the horizontal state, the second length d3(e.g., the height) of the first bridge521may be designed to be greater than the length d4(e.g., the height) of the second bridge522. However, the shape of the metal structure520is not limited to the illustrated embodiment, and may be changed in design in various ways to be efficiently electrically connected to the (2-1)thcircuit board420and the (2-2)thcircuit board430.

According to an embodiment, since the space by which the (2-1)thcircuit board420and the (2-2)thcircuit board430are spaced apart from each other is entirely covered by the metal structure520, EMI noise generated inside the circuit board module400bcan be blocked without going out to the external space.

FIG.13is a diagram illustrating an example stacking structure in a circuit board module400caccording to various embodiments.FIG.14is a diagram illustrating an example stacking structure in a circuit board module400daccording to various embodiments.FIG.15is a diagram illustrating an example stacking structure in a circuit board module400eaccording to various embodiments.

According to various embodiments, the circuit board module400c,400d, or400emay include a first circuit board410, a (2-1)thcircuit board420, a (2-2)thcircuit board430, a first interposer part470disposed between the first circuit board410and the (2-1)thcircuit board420, and a second interposer part480disposed between the first circuit board410and the (2-2)thcircuit board430. According to an embodiment, the circuit board module400c,400d, or400emay include a third circuit board440, a third interposer part530disposed between the third circuit board440and the (2-1)thcircuit board420, and a fourth interposer part540disposed between the third circuit board440and the (2-2)thcircuit board430.

According to an embodiment, the structures of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, and the second interposer part480of the circuit board module400cofFIG.13may be partially or entirely the same as or similar to those of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, and the second interposer part480of the circuit board module400ofFIGS.5to8.

According to an embodiment, the structures of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, the second interposer part480, and the solder510of the circuit board module400dofFIG.14may be partially or entirely the same as or similar to those of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, the second interposer part480, and the solder510of the circuit board module400aofFIGS.9A and10.

According to an embodiment, the structures of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, the second interposer part480, and the metal structure520of the circuit board module400eofFIG.15may be partially or entirely the same as or similar to those of the first circuit board410, the (2-1)thcircuit board420, the (2-2)thcircuit board430, the first interposer part470, the second interposer part480, and the metal structure520of the circuit board module400bofFIGS.11and12.

InFIGS.13,14and15, “Z” may refer to the thickness direction of the circuit board module400c,400d, or400e. In addition, in an embodiment of the disclosure, “+Z” may refer to a forward direction (e.g., a first direction) in which the circuit board module400c,400d, or400efaces a display (e.g., the display330inFIG.4), and “−Z” may refer to a rearward direction (e.g., a second direction) in which the circuit board module400c,400d, or400efaces a rear plate (e.g., the rear plate380inFIG.4).

According to various embodiments, the circuit board module400c,400d, or400emay include a first circuit board410having a top surface (a surface oriented in the first direction (+Z-axis direction)) and/or a bottom surface (a surface oriented in the second direction (−Z-axis direction)) on which components are disposed, a (2-1)thcircuit board420disposed to be spaced apart from a (1-1)thregion S1of the first circuit board410by a first distance d1, and a (2-2)thcircuit board430disposed to be spaced apart from a (1-2)thregion S2of the first circuit board410by a second distance d2. The first distance d1and the second distance d2may be different from each other.

According to various embodiments, the circuit board module400c,400d, or400emay further include a third circuit board440, and the third circuit board440may include a (3-1)thregion S3corresponding to the (1-1)thregion S1and a (3-2)thregion S4corresponding to the (1-2)thregion S2. According to an embodiment, the third circuit board440may be manufactured to have an area substantially corresponding to that of the first circuit board410, and may be disposed parallel with the first circuit board410. According to an embodiment, the third circuit board440may be manufactured to have an area substantially smaller than that of the first circuit board410, and may be located within the first circuit board410when viewed from above the circuit board module400c,400d, or400e. An interposer unit (e.g., interposer parts) having a closed loop shape and disposed between the first circuit board410and the third circuit board440may be manufactured to have an area smaller than the area of the first circuit board410and/or the area of the third circuit board440, and may be located inside the first circuit board410and/or the third circuit board440.

According to various embodiments, components may be disposed on the top surface and/or the bottom surface of the third circuit board440, the (2-1)thcircuit board420may be disposed to be spaced apart from the (3-1)thregion S3of the third circuit board440by a third distance d3, and the (2-2)thcircuit board430may be disposed to be spaced apart from (3-2)thregion S4of the third circuit board440by a fourth distance d4. When the (2-1)thcircuit board420and the (2-2)thcircuit board430have the same thickness, the sum of the first distance d1and the third distance d3may be the same as the sum of the second distance d2and the fourth distances d4.

According to various embodiments, the interposer unit may include a first interposer unit disposed on one surface of the first circuit board410and a second interposer unit disposed on one surface of the third circuit board440. The first interposer unit may include a plurality of parts (a first interposer part470and a second interposer part480), and may be manufactured generally in a closed loop shape. The configurations of the first interposer part470and the second interposer part480ofFIGS.5to12are applicable to those of the first interposer part470and the second interposer part480.

According to various embodiments, the second interposer unit may include a plurality of parts (a third interposer part530and a fourth interposer part540), and may be manufactured generally in a closed loop shape. The third interposer part530may be disposed between a (3-1)thregion S3of the third circuit board440and a (2-1)thcircuit board420. The fourth interposer part540may be disposed between a (3-2)thregion S4of the third circuit board440and a (2-2)thcircuit board430.

According to an embodiment, the third interposer part530may be disposed to face the first interposer part470with the (2-1)thcircuit board420interposed therebetween. The third interposer part530may have a quadrilateral loop shape in which a portion facing the (2-2)ndcircuit board430is opened. For example, the third interposer part530may be provided in a “” shape. The third interposer part530may be disposed along an edge region of the (3-1)thregion S3of the third circuit board440and/or an edge region of the (2-1)thcircuit board420, and the top surface thereof may be soldered to the bottom surface of the (3-1)thregion S3. The bottom surface of the third interposer part530may be soldered to the top surface of the (2-1)thcircuit board420.

According to an embodiment, the fourth interposer part540may be disposed to face the second interposer part480with the (2-2)thcircuit board430interposed therebetween. The fourth interposer part540may have a quadrilateral loop shape in which a portion facing the (2-1)thcircuit board420is opened. For example, the fourth interposer part540may be provided in a “” shape. The fourth interposer part540may be disposed along an edge region of the (3-2)thregion S4of the third circuit board440and/or an edge region of the (2-2)thcircuit board430, and the top surface thereof may be soldered to the bottom surface of the (3-2)thregion S4. The bottom surface of the fourth interposer part540may be soldered to the top surface of the (2-2)thcircuit board430.

According to an embodiment, the third interposer part530and the fourth interposer part540may have different thicknesses (e.g., heights). The first circuit board410and the third circuit board440are arranged parallel with each other, and the sum of the thicknesses (e.g., the heights) of the first interposer part470, the (2-1)th circuit board420, and the third interposer part470disposed between the first circuit board410and the third circuit board440may be the same as the sum of the thicknesses (e.g., the heights) of the second interposer part480, the (2-2)thcircuit board430, and the fourth interposer part540.

According to various embodiments, in the circuit board module400c,400d, or400e, since circuit boards are disposed in a stacked manner, a large number of components can be mounted on the circuit board module400c,400d, or400e. According to the disclosure, it is possible to increase the number of surfaces on which components can be mounted to six or more. For example, a plurality of components can be disposed in a shieldable region of an internal space of the circuit board module400c,400d, or400e. The first component451and/or the second component452may be mounted on the top surface (the surface oriented in the first direction (+Z-axis direction)) of the first circuit board410, and the third component453may be mounted on the top surface or the bottom surface of the (2-1)thcircuit board420. The fourth component454may be mounted on the top surface or the bottom surface of the (2-2)thcircuit board430, and the fifth component454may be mounted on the bottom surface (the surface oriented in the second direction (−Z-axis direction)) of the third circuit board440. As another example, a plurality of components may be disposed on the outer surface of the circuit board module400c,400d, or400e. The sixth component456may be mounted on the bottom surface of the first circuit board410, or the seventh component457may be mounted on the top surface of the third circuit board440.

An electronic device (e.g., the electronic device101ofFIGS.1to4) according to various example embodiments may include: a display (e.g., the display330inFIG.4), a first circuit board (e.g., the first circuit board410inFIG.5) disposed under the display, a first component (e.g., the first component451inFIG.5) and a second component (e.g., the second component452inFIG.5) disposed on one surface of the first circuit board, the first and second components each having different heights, a first interposer (e.g., the first interposer part470inFIG.5) surrounding at least one side surface of the first component and disposed in a first region of the first circuit board, the first interposer part having a first height, a second interposer part (e.g., the second interposer part480inFIG.5) surrounding at least one side surface of the second component and disposed in a second region of the first circuit board, the second interposer having a second height different from the first height, a first second circuit board (e.g., the (2-1)thcircuit board420inFIG.5), at least a portion of which is disposed to be spaced apart from the first region of the first circuit board, the first second circuit board including a first first portion (e.g., the (1-1)thportion421inFIG.5) bonded to the first interposer part, and a second second circuit board (e.g., the (2-2)thcircuit board430inFIG.5), at least a portion of which is disposed to be spaced apart from the second region of the first circuit board, the second second circuit board including a first second portion (e.g., the (2-1)thportion431inFIG.5) bonded to the second interposer part and being spaced apart from the first second circuit board by a specified gap.

According to various example embodiments, the first second circuit board and the second second circuit board may be spaced apart from each other in a horizontal direction or a vertical direction.

According to various example embodiments, a second first portion (e.g., the (1-2)thportion422inFIG.7) different from the first first portion of the first second circuit board and a second second portion (e.g., the (2-2)thportion432inFIG.7) different from the first second portion of the second second circuit board may be disposed to overlap each other when viewed from above the first second circuit board and/or the second second circuit board.

According to various example embodiments, for electrical connection between the first second circuit board and the second second circuit board, the second first portion of the first second circuit board and the second second portion of the second second circuit board may be soldered to each other.

According to various example embodiments, solder (e.g., the solder510inFIG.9A) and the second second portion of the second second circuit board may be disposed to be stacked above the second first portion of the first second circuit board when viewed from a side surface of the first second circuit board and/or the second second circuit board.

According to various example embodiments, the gap between the first second circuit board and the second second circuit board may be shielded through the soldering.

According to various example embodiments, a third portion (e.g., the first portion420ainFIG.11) of the first second circuit board adjacent to the second second circuit board and a fourth portion (e.g., the third portion430ainFIG.11) of the second second circuit board adjacent to the first second circuit board may be disposed to be spaced apart from each other when viewed from above the first second circuit board and/or the second second circuit board, and the third portion of the first second circuit board and the fourth portion of the second second circuit board may be electrically connected to each other by a metal structure (e.g., the metal structure520inFIG.11).

According to various example embodiments, the metal structure may include a first bridge (e.g., the first bridge521inFIG.11) coupled to a top surface of the first second circuit board, a second bridge (e.g., the second bridge522ofFIG.11) coupled to a top surface of the second second circuit board, and a connection portion (e.g., the connection portion523ofFIG.11) connecting the first bridge and the second bridge, and a length of the first bridge and a length of the second bridge may be different from each other.

According to various example embodiments, the metal structure may be disposed along the third portion (e.g., the first portion420ainFIG.11) of the first second circuit board and the fourth portion (e.g., the third portion430ainFIG.11) of the second second circuit board and may shield the gap between the first second circuit board and the second second circuit board.

According to various example embodiments, the first interposer part may be disposed along an edge of the first region between the first circuit board and the first second circuit board, and the second interposer part may be disposed along an edge of the second region between the first circuit board and the second second circuit board.

According to various example embodiments, the first interposer may include a line portion including a linear shape and opposite end portions configured to be connected to the second interposer part or another interposer part, and at least one of the opposite end portions may include a stepped shape.

According to various example embodiments, the first interposer may be configured to surround at least two side surfaces of the first component, and may have a shape in which a region facing the second component is open, and the second interposer may be configured to surround at least two side surfaces of the second component, and may have a shape in which a region facing the first component is open.

According to various example embodiments, a first end portion (e.g., the first end portion R1inFIG.8) of the first interposer part and a second end portion (e.g., the second end portion R2inFIG.8) connected to the first end portion may be disposed to at least partially overlap each other when viewed from a side surface of the first interposer part and/or the second interposer part.

According to various example embodiments, the electronic device may further include a third circuit board (e.g., the third circuit board440inFIG.13) disposed parallel with the first circuit board and including a third region (e.g., the (3-1)thregion S3) corresponding to the first region (e.g., the (1-1)thregion S1inFIG.13) and a fourth region (e.g., the (3-2)thregion S4inFIG.13) corresponding to the second region (e.g., the (1-2)thregion S2inFIG.13), a third interposer part (e.g., the third interposer part530inFIG.13) disposed between the third region of the third circuit board and the first second circuit board, and having a third height, and a fourth interposer (e.g., the fourth interposer part540inFIG.13) disposed between the fourth region of the third circuit board and the second second circuit board, and having a fourth height different from the third height.

According to various example embodiments, the first circuit board may include a top surface and a bottom surface on which the first component and/or the second component are disposed, the first second circuit board may include a top surface and a bottom surface on which the third component is mounted, the second second circuit board may include a top surface and a bottom surface on which the fourth component is mounted, and the third circuit board may include a top surface and a bottom surface on which a fifth component is mounted.

According to various example embodiments, the first component and/or the second component may be disposed over the first region and the second region of the first circuit board.

An electronic device (e.g., the electronic device101inFIGS.1to4) according to various embodiments may include: a display (e.g., the display330inFIG.4), a first circuit board (e.g., the first circuit board410inFIG.5) disposed under the display, a first component (e.g., the first component451inFIG.5) and a second component (e.g., the second component452inFIG.5) disposed on one surface of the first circuit board, the first component and the second component each having different heights, a first second circuit board (e.g., the (2-1)thcircuit board420inFIG.5), at least a portion of which is disposed parallel with a first region of the first circuit board, a second second circuit board (e.g., the (2-2)thcircuit board430inFIG.5), at least a portion of which is disposed parallel with a second region of the first circuit board, a first interposer (e.g., the first interposer part470inFIG.5) disposed between the first region of the first circuit board and the first second circuit board, the first interposer surrounding at least two side surfaces of the first component and having a first height, and a second interposer part (e.g., the second interposer part480inFIG.5) disposed between the second region of the first circuit board and the second second circuit board, the second interposer part surrounding at least two side surfaces of the second component and having a second height different from the first height, wherein a first portion of the first second circuit board facing the second second circuit board may overlap at least a portion of a second portion of the second second circuit board facing the first second circuit board.

According to various example embodiments, for electrical connection between the first second circuit board and the second second circuit board, the first portion of the first second circuit board and the second portion of the second second circuit board may be soldered to each other.

An electronic device (e.g., the electronic device101inFIGS.1to4) according to various embodiments may include: a display (e.g., the display330inFIG.4), a first circuit board (e.g., the first circuit board410inFIG.13) disposed under the display, a second circuit board (e.g., the third circuit board440inFIG.13) disposed parallel with the first circuit board between the display and the first circuit board, a first component (e.g., the first component451inFIG.13) disposed in a first region of the first circuit board, a second component (e.g., the second component452inFIG.13) at least a portion of which is disposed in a second region adjacent to the first region of the first circuit board, a first third circuit board (e.g., the (2-1)thcircuit board420inFIG.13) disposed between the first region of the first circuit board and the second circuit board and spaced apart from the first region by a first distance, a second third circuit board (e.g., the (2-2)thcircuit board430inFIG.13) disposed between the second region of the first circuit board and the second circuit board and spaced apart from the second region by a second distance different from the first distance, a first interposer part (e.g., the first interposer part470inFIG.13) surrounding at least one side surface of the first component and coupled between the first region of the first circuit board and the first third circuit board, a second interposer part (e.g., the second interposer part480inFIG.13) surrounding at least one side surface of the second component and coupled between the second region of the first circuit board and the second third circuit board, a third interposer part (e.g., the third interposer part530inFIG.13) coupled between the first third circuit board and a third region of the second circuit board, and a fourth interposer part (e.g., the fourth interposer part540inFIG.13) coupled between the second third circuit board and a fourth region of the second circuit board.

According to various example embodiments, the first third circuit board and the second third circuit board may be spaced apart from each other in a horizontal direction or a vertical direction.

As will be apparent to a person ordinarily skilled in the technical field to which the disclosure belongs, a circuit board module according to various example embodiments of the disclosure and an electronic device including the same are not limited by the above-described embodiments and drawings, and may be variously substituted, modified, and changed within the technical scope of the disclosure.