Patent Description:
An electronic components mounted on a printed circuit board may generate heat and electromagnetic waves when they are operated.

Heat and electromagnetic waves generated by electronic components may influence other electronic components in an electronic device, which may cause a malfunction of the electronic device.

Electronic devices of the related art block electronic waves generated by electronic components using a shield can made of a metal material and surrounding the electronic components.

<CIT> discloses an apparatus for improving reception sensitivity of a public wave receiver includes power devices formed in a power supply of the public wave receiver, and a shielding plate for shielding noise generated by the power devices. A signal line for connecting an antenna used for the public wave receiver to a public wave receiver main body and a ground line are formed coaxially to each other by a shield layer.

<CIT> discloses an electromagnetic wave shielding sheet easily conforming to the irregular contour of a circuit board mounted with an electronic component and easily connecting to the ground electrode provided in the circuit board, and to provide an electronic device using the same.

<CIT> discloses an electronic device including a shielding member. The electronic device includes a substrate having an electric element mounted thereon; a shield can mounted on the electric element and including an opening formed at a part facing the electric element; a shielding member mounted around a part in which the opening is formed on an outer surface of the shield can, and electrically connected to the shield can; a metal plate mounted on the shielding member, with the opening covered, and electrically connected to the shielding member; and a heat conductive member mounted in the opening and interposed between the electric element and the metal plate, and in contact with the electric element and the metal plate.

However, shield cans of the related art have a problem that since the ability to transmit heat generated by electronic components is low, the heat is not efficiently discharged.

The invention is defined by the independent claim. Further aspects of the invention are outlined in the dependent claims. When the term embodiment is used for describing unclaimed combination of features, the term has to be understood as referring to examples useful for understanding the present invention.

An electronic device according to various embodiments can block electromagnetic waves of electronic components and can quickly discharge heat of the electronic components.

<FIG> is a block diagram illustrating an electronic device in a network environment <NUM> according to an embodiment of the disclosure.

Referring to <FIG>, an electronic device <NUM> in the network environment <NUM> may communicate with an electronic device <NUM> via a first network <NUM> (e.g., a short-range wireless communication network), or an electronic device <NUM> or a server <NUM> via a second network <NUM> (e.g., a long-range wireless communication network). According to an embodiment of the disclosure, the electronic device <NUM> may communicate with the electronic device <NUM> via the server <NUM>. According to an embodiment of the disclosure, the electronic device <NUM> may include a processor <NUM>, memory <NUM>, an input device <NUM>, a sound output device <NUM>, a display device <NUM>, an audio module <NUM>, a sensor module <NUM>, an interface <NUM>, a haptic module <NUM>, a camera module <NUM>, a power management module <NUM>, a battery <NUM>, a communication module <NUM>, a subscriber identification module (SIM) <NUM>, or an antenna module <NUM>. In some embodiments of the disclosure, at least one (e.g., the display device <NUM> or the camera module <NUM>) of the components may be omitted from the electronic device <NUM>, or one or more other components may be added in the electronic device <NUM>. In some em bodiments of the disclosure, some of the components may be implemented as single integrated circuitry.

According to one embodiment of the disclosure, as at least part of the data processing or computation, the processor <NUM> may load a command or data received from another component (e.g., the sensor module <NUM> or the communication module <NUM>) in volatile memory <NUM>, process the command or the data stored in the volatile memory <NUM>, and store resulting data in non-volatile memory <NUM>. According to an embodiment of the disclosure, the processor <NUM> may include a main processor <NUM> (e.g., a central processing unit (CPU) or an application processor (AP)), and an auxiliary processor <NUM> (e.g., a graphics processing unit (GPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor <NUM>.

According to an embodiment of the disclosure, the auxiliary processor <NUM> (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module <NUM> or the communication module <NUM>) functionally related to the auxiliary processor <NUM>.

According to an embodiment of the disclosure, the receiver may be implemented as separate from, or as part of the speaker.

According to an embodiment of the disclosure, the display device <NUM> may include touch circuitry adapted to detect a touch, or sensor circuitry (e.g., a pressure sensor) adapted to measure the intensity of force incurred by the touch.

According to an embodiment of the disclosure, the audio module <NUM> may obtain the sound via the input device <NUM>, or output the sound via the sound output device <NUM> or a headphone of an external electronic device (e.g., an electronic device <NUM>) directly (e.g., wiredly) or wirelessly coupled with the electronic device <NUM>.

According to an embodiment of the disclosure, the sensor module <NUM> may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

According to an embodiment of the disclosure, the interface <NUM> may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

According to an embodiment of the disclosure, the connecting terminal <NUM> may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector).

According to an embodiment of the disclosure, the haptic module <NUM> may include, for example, a motor, a piezoelectric element, or an electric stimulator.

The camera module <NUM> may capture an image or moving images. According to an embodiment of the disclosure, the camera module <NUM> may include one or more lenses, image sensors, image signal processors, or flashes.

According to one embodiment of the disclosure, the power management module <NUM> may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

According to an embodiment of the disclosure, the battery <NUM> may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell.

According to an embodiment of the disclosure, the communication module <NUM> may include a wireless communication module <NUM> (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module <NUM> (e.g., a local area network (LAN) communication module or a power line communication (PLC) module).

According to an embodiment of the disclosure, the antenna module <NUM> may include an antenna including a radiating element composed of a conductive material or a conductive pattern formed in or on a substrate (e.g., PCB). According to an embodiment of the disclosure, the antenna module <NUM> may include a plurality of antennas. According to an embodiment of the disclosure, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module <NUM>.

According to an embodiment of the disclosure, commands or data may be transmitted or received between the electronic device <NUM> and the external electronic device <NUM> via the server <NUM> coupled with the second network <NUM>. According to an embodiment of the disclosure, all or some of operations to be executed at the electronic device <NUM> may be executed at one or more of the external electronic devices <NUM>, <NUM>, or <NUM>.

An electronic device according to various embodiments includes a circuit board (e.g., <NUM> in <FIG>), at least one first electronic component (e.g., <NUM> in <FIG>) mounted on a surface of the circuit board <NUM>, a shielding sheet (e.g., <NUM> in <FIG>) attached to the surface of the circuit board <NUM> to cover the at least one first electronic component <NUM>, a thermal interface material (TIM) (e.g., <NUM> in <FIG>) stacked on the shielding sheet <NUM> to overlap the at least one first electronic component <NUM>, and a heat dissipation member (e.g., <NUM> in <FIG>) disposed to face the surface of the circuit board <NUM>, being in surface contact with the thermal interface material <NUM>, and fastened to at least a portion of the circuit board <NUM> by a fixing member. The shielding sheet <NUM> includes an adhesive layer <NUM>, an insulating layer <NUM>, and a conductive layer <NUM> disposed between the adhesive layer <NUM> and the insulating layer <NUM>. The adhesive layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, so a portion of the conductive layer <NUM> is exposed and the exposed portion of the conductive layer <NUM> is in surface contact with the at least one first electronic component <NUM> disposed thereunder. The insulating layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, so a portion of the conductive layer <NUM> is exposed and the exposed portion of the conductive layer <NUM> is in surface contact with the thermal interface material <NUM> disposed thereover. The conductive layer <NUM> may include a plurality of nanofibers plated with copper (Cu), graphite, or nickel (Ni). The conductive layer <NUM> may be in contact with a ground pad disposed on the surface of the circuit board <NUM> at the boundary of the shielding sheet <NUM>. The heat dissipation member <NUM> may include a heat spreader <NUM> being in surface contact with the thermal interface material <NUM> and a fixing plate <NUM> supporting the heat spreader <NUM>. The heat spreader <NUM> may be disposed between the fixing plate <NUM> and the thermal interface material <NUM>. The fixing plate <NUM> is disposed between the heat spreader <NUM> and the thermal interface material <NUM> and has a groove exposing the heat spreader <NUM> at the portion overlapping the thermal transfer material <NUM>, so the thermal transfer material <NUM> can be in surface contact with the heat spreader <NUM> through the groove. The heat spreader <NUM> may be a heat pipe or a vapor chamber. The fixing plate <NUM> may be made of any one of steel used stainless (SUS) or a copper alloy. The area of the thermal transfer material <NUM> may be the same as the area of the at least one first electronic component <NUM> and the area of the shielding sheet <NUM> may be larger than the area of the thermal interface material <NUM>. The area of the heat dissipation member <NUM> may be larger than the area of the shielding sheet <NUM> and may be smaller than the area of the circuit board <NUM>. The area of the heat dissipation member <NUM> may be <NUM> to <NUM>% of the area of the circuit board <NUM>. The fixing member may include a power entry module (PEM) nut ® formed on the circuit board <NUM> or the heat dissipation member <NUM> and a screw inserted in the PEM nut ®. At least one hole through which the screw is disposed may be formed in the circuit board <NUM> or the heat dissipation member <NUM>. The at least one first electronic component <NUM> may include at least one of a central processing unit, an application processor, a graphic processing unit, an image signal processor, a sensor hub processor, a communication processor, a Power Amp Module (PAM), or a Power Management Integrated Circuit (PMIC). An air layer may be formed between the heat dissipation member <NUM> and the circuit board <NUM> in a region not overlapping the at least one first electronic component <NUM>.

An electronic device according to various embodiments may include a housing, a circuit board <NUM> disposed in a space in the housing, the at least one first electronic component <NUM> and at least one second electronic component <NUM> formed on a surface of the circuit board <NUM>, a shielding sheet <NUM> attached to the surface of the circuit board <NUM> to cover the at least one first electronic component <NUM>, a thermal interface material <NUM> (TIM) stacked on the shielding sheet <NUM> to overlap the at least one first electronic component <NUM>, and a heat dissipation member <NUM> disposed to face the surface of the circuit board <NUM>, being in surface contact with the thermal interface material <NUM>, and fastened to at least a portion of the circuit board <NUM> by a fixing member. The electronic device may further include a shield can (e.g., <NUM> in <FIG>) covering the at least one second electronic component <NUM> on the surface of the circuit board <NUM>.

<FIG> is a front perspective view of a mobile electronic device according to an embodiment of the disclosure.

<FIG> is a rear perspective view of an electronic device shown in <FIG> according to an embodiment of the disclosure.

Referring to <FIG>, an electronic device <NUM> according to an embodiment may include a housing <NUM> having a first surface (or a front surface) 210A, a second surface (or a rear surface) 210B, and a side 210C surrounding the space between the first surface 210A and the second surface 210B. In another embodiment (not shown), the housing may mean a structure forming some of the first surface 210A, the second surface 210B, and the side 210C shown in <FIG>. According to an embodiment of the disclosure, the first surface 210A may be at least partially substantially formed by a transparent front plate <NUM> (e.g., a glass plate or a polymer plate including various coating layers). The second surface 210B may be formed by a substantially opaque rear plate <NUM>. The rear plate <NUM>, for example, may be made of coated or colored glass, ceramic, a polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of these materials. The side 210C is combined with a front plate <NUM> and a rear plate <NUM> and may be formed by a lateral bezel structure <NUM> (or a "lateral member") including metal and/or a polymer. In an embodiment of the disclosure, the rear plate <NUM> and the lateral bezel structure <NUM> may be integrated and may include the same material (e.g., a metallic material, such as aluminum).

In the embodiment shown in the figures, the front plate <NUM> may have first regions 210D, which bend toward the rear plate from the first surface 210A and seamlessly extend, at both long edges of the front plate. In the shown embodiment (see <FIG>), the rear plate <NUM> may have second regions 210E, which bend toward the front plate from the second surface 210B and seamlessly extend, at both long edges. In an embodiment of the disclosure, the front plate <NUM> or the rear plate <NUM> may have only one of the first regions 210D or the second regions 210E. In an embodiment of the disclosure, the front plate <NUM> may have only a flat surface disposed in parallel with the second surface 210B without including the first region and the second region. In the embodiments of the disclosure, when seen from a side of the electronic device, the side bezel structure <NUM> may have a first thickness (or width) at the sides not including the first regions 210D or the second regions 210E and may have a second thickness smaller than the first thickness at the sides including the first regions or the second regions.

According to an embodiment of the disclosure, the electronic device <NUM> may include at least one or more of a display <NUM>, an input device <NUM>, sound output devices <NUM> and <NUM>, sensor modules <NUM> and <NUM>, camera modules <NUM>, <NUM>, and <NUM>, key input devices <NUM>, an indicator (not shown), and connectors <NUM> and <NUM>. In an embodiment of the disclosure, the electronic device <NUM> may not include at least one (e.g., the key input devices <NUM> or the indicator) of the components or may further include other components.

According to an embodiment of the disclosure, the display <NUM>, for example, may be exposed through a large part of the front plate <NUM>. In an embodiment of the disclosure, at least a portion of the display <NUM> may be exposed through the first surface 210A and the front plate <NUM> forming the first regions 210D of the side 210C. The display <NUM> may be combined with or disposed adjacent to a touch sensing circuit, a pressure sensor that can measure the intensity (pressure) of a touch, and/or a digitizer that detects a magnetic stylus pen. In an embodiment of the disclosure, at least some of the sensor modules <NUM>, <NUM> and/or at least some of the key input devices <NUM> may be disposed in the first region 210D and/or the second region 210E.

According to an embodiment of the disclosure, the input device <NUM> may include a microphone <NUM>. In an embodiment of the disclosure, the input device <NUM> may include a plurality of microphones <NUM> disposed to be able to sense the direction of sound. The sound output devices <NUM> and <NUM> may include speakers <NUM> and <NUM>. The speakers <NUM> and <NUM> may include an external speaker <NUM> and a receiver <NUM> for a telephone call. In an embodiment of the disclosure, the microphone <NUM>, the speakers <NUM> and <NUM>, and the connectors <NUM> and <NUM> may be disposed in the space of the electronic device <NUM> and may be exposed to the external environment through at least one hole formed at the housing <NUM>. In an embodiment of the disclosure, the hole of the housing <NUM> may be used in common for the microphone <NUM> and the speakers <NUM> and <NUM>. In an embodiment of the disclosure, the sound output devices <NUM> and <NUM> may include a speaker (e.g., a piezo speaker) without the hole of the housing <NUM>.

According to an embodiment of the disclosure, the sensor modules <NUM> and <NUM> can generate an electrical signal or a data value corresponding to the internal operation state of the electronic device <NUM> or an external environmental state. The sensor modules <NUM> and <NUM>, for example, may include a first sensor module <NUM> (e.g., a proximity sensor) disposed on the first surface 210A of the housing <NUM> and/or a second sensor module (not shown) (e.g., a fingerprint sensor), and/or a third sensor module <NUM> (e.g., an HRM sensor) disposed on the second surface 210B of the housing <NUM>. The fingerprint sensor may be disposed on the first surface 210A (e.g., a home key button <NUM>), in a partial region of the second surface 210B of the housing <NUM>, or under the display <NUM>. The electronic device <NUM> may further include a sensor module (not shown), for example, at least one of a gesture sensor, a gyro sensor, a barometer sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (Infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illumination sensor <NUM>.

According to an embodiment of the disclosure, the camera modules <NUM>, <NUM>, and <NUM> may include a first camera <NUM> disposed on the first surface 210A of the electronic device <NUM>, and a second camera <NUM> and/or a flash <NUM> disposed on the second surface 210B. The camera modules <NUM> and <NUM> may include one or more lenses, an image sensor, and/or an image signal processor. A flash <NUM>, for example, may include a light emitting diode or a xenon lamp. In an embodiment of the disclosure, two or more lenses (a wide-angle lens, an ultra wide lens, or a telephoto lens) and image sensors may be disposed on one surface of the electronic device <NUM>.

According to an embodiment of the disclosure, the key input device <NUM> may be disposed on the side 210C of the housing <NUM>. In another embodiment of the disclosure, the electronic device <NUM> may not include some or all of the key input devices <NUM> described above and the non-included key input devices <NUM> may be implemented in other types, such as software keys on the display <NUM>. As another embodiment of the disclosure, the key input devices <NUM> may be implemented using the pressure sensor included in the display <NUM>.

According to an embodiment of the disclosure, the indicator, for example, may be disposed on the first surface 210A of the housing <NUM>. The indicator, for example, may provide state information of the electronic device <NUM> in a light type. In another embodiment of the disclosure, the light emitting element, for example, may provide a light source that operates with the operation of the camera module <NUM>. The indicator, for example, may include an LED, an IR LED, and a xenon lamp.

According to an embodiment of the disclosure, the connectors <NUM> and <NUM> may include a first connector hole <NUM> that can accommodate a connector (e.g., a USB connector) for transmitting and receiving power and/or data to and from external electronic devices and/or a second connector hole <NUM> (or an earphone jack) that can accommodate a connector for transmitting and receiving audio signals to and from external electronic devices.

According to an embodiment of the disclosure, a camera module <NUM> of the camera modules <NUM> and <NUM>, a sensor module <NUM> of the sensor modules <NUM> and <NUM>, or the indicator may be disposed to be exposed through a display <NUM>. For example, the camera module <NUM>, the sensor module <NUM>, or the indicator may be disposed to be able to be in contact with the external environment through a through-hole bored to a front plate <NUM> of the display <NUM> in the internal space of an electronic device <NUM>. As another embodiment of the disclosure, the sensor module <NUM> may be disposed in the internal space of the electronic device to perform its function without being visually exposed through the front plate <NUM>. For example, in this case, there may be no need for a through-hole in a region facing the sensor module.

<FIG> is an exploded perspective view of an electronic device shown in <FIG> according to an embodiment of the disclosure.

An electronic device <NUM> shown in <FIG> is at least partially similar to the electronic device <NUM> shown in <FIG> or may include another embodiment of an electronic device.

Referring to <FIG>, the electronic device <NUM> (e.g., the electronic device <NUM> shown in <FIG>) may include a side member <NUM> (e.g., a lateral bezel structure), a first supporting member <NUM> (e.g., a bracket or a supporting structure), a front plate <NUM> (e.g., a front cover), a display <NUM>, a printed circuit board <NUM>, a battery <NUM>, a second supporting member <NUM> (e.g., a bracket or a supporting structure), an antenna <NUM>, and a rear plate <NUM> (e.g., a rear cover, the rear plate <NUM> shown in <FIG>). In an embodiment of the disclosure, the electronic device <NUM> may not include at least one (e.g., the first supporting member <NUM> or the second supporting member <NUM>) of the components, or may further include other components. At least one of the components of the electronic device <NUM> may be the same as or similar to at least one of the components of the electronic device <NUM> shown in <FIG> and repeated description is omitted below.

According to an embodiment of the disclosure, the first supporting member <NUM> is disposed in the electronic device <NUM> and may be connected with the lateral member <NUM> or may be integrated with the lateral member <NUM>. The first supporting member <NUM>, for example, may be made of a metallic material and/or a non-metallic material (e.g., a polymer). The display <NUM> may be coupled to a surface of the first supporting member <NUM> and the printed circuit board <NUM> may be coupled to the other surface of the first supporting member <NUM>.

According to an embodiment of the disclosure, at least one or more of a central processing unit, an application processor, a graphic processing unit, an image signal processor, a sensor hub processor, a communication processor, a Power Amp Module (PAM), a charging IC, or a Power Management Integrated Circuit (PMIC) may be mounted on a surface of the printed circuit board <NUM>. According to an embodiment of the disclosure, a memory (not shown) (e.g., <NUM> in <FIG>) or an interface (not shown) (e.g., <NUM> in <FIG>) may be further mounted on a surface of the printed circuit board <NUM>.

According to an embodiment of the disclosure, a shielding member (e.g., the shielding sheet <NUM> shown in <FIG> or the shield can <NUM> shown in <FIG>), a thermal interface material (TIM) <NUM>, and a heat dissipation member <NUM> are stacked over a surface of the printed circuit board <NUM> to overlap the at least one first electronic component <NUM> mounted on the printed circuit board <NUM>.

According to an embodiment of the disclosure, the shielding member is a shielding sheet <NUM> covering at least one electronic component. According to an embodiment of the disclosure, the shielding sheet <NUM> is attached to cover the at least one first electronic component (e.g., <NUM> in <FIG>) mounted on the printed circuit board <NUM> and the shield can (e.g., <NUM> in <FIG>) may cover at least one second electronic component (e.g., <NUM> in <FIG>) mounted on the printed circuit board <NUM>. According to various embodiments of the disclosure, the first electronic component may be an electronic component that generates a large amount of heat or has a high operation speed (e.g., an operation clock) in comparison to the second electronic component. For example, the first electronic component may be a central processing unit, an application processor, a graphic processing unit, or an image signal processor that generates a relatively large amount of heat and has a relatively high operation speed, and the second electronic component may be the other excluding the first electronic component.

According to an embodiment of the disclosure, the thermal interface material (TIM) <NUM> is stacked over the shielding sheet <NUM> to overlap the at least one first electronic component <NUM>.

According to an embodiment of the disclosure, the heat dissipation member <NUM> is disposed to face a surface of the printed circuit board <NUM> and may be in surface contact with the thermal interface material <NUM>. According to an embodiment of the disclosure, the heat dissipation member <NUM> can receive heat generated from the at least one first electronic component <NUM> through the thermal interface material <NUM> and can diffuse the received heat.

According to an embodiment of the disclosure, the heat dissipation member <NUM> is fastened to at least a portion of the printed circuit board by a fixing member. For example, the fixing member may include a PEM nut ® (e.g., the PEM nut ® <NUM> shown in <FIG>) formed on the printed circuit board <NUM> or the heat dissipation member, and a screw <NUM> inserted in the PEM nut ®.

The stacking structure of the shielding member <NUM>, the thermal interface material (TIM) <NUM>, and the heat dissipation member <NUM> according to various embodiments will be described below with reference to <FIG>.

According to an embodiment of the disclosure, the interface may include a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, an SD card interface, and/or an audio interface. The interface, for example, can electrically or physically connect the electronic device <NUM> to external electronic devices and may include a USB connector, an SD card/MMC connector, or an audio connector.

According to an embodiment of the disclosure, the battery <NUM>, which is a device for supplying power to one or more components of the electronic device <NUM>, for example, may include a primary battery that is not rechargeable, a secondary battery that is rechargeable, or a fuel cell. At least a portion of the battery <NUM>, for example, may be disposed in substantially the same plane as the printed circuit board <NUM>. The battery <NUM> may be integrally disposed in the electronic device <NUM>. As another embodiment of the disclosure, the battery <NUM> may be disposed to be detachable from the electronic device <NUM>.

According to an embodiment of the disclosure, the antenna <NUM> may be disposed between the rear plate <NUM> and the battery <NUM>. The antenna <NUM>, for example, may include a Near Field Communication (NFC) antenna, a wireless charging antenna, and/or a Magnetic Secure Transmission (MST) antenna. The antenna <NUM>, for example, can perform near field communication with external devices or can wirelessly transmit and receive power for charging. In another embodiment of the disclosure, an antenna structure may be formed by a portion or a combination of the lateral bezel structure <NUM> and/or the first supporting member <NUM>.

<FIG> illustrates a surface of a printed circuit board according to an embodiment of the disclosure.

Referring to <FIG>, at least one first electronic component <NUM> generating a relatively large amount of heat or having a relatively high operation speed (e.g., an operation clock) is mounted on a surface of the printed circuit board <NUM> (e.g., <NUM> in <FIG>) according to various embodiments. At least one second electronic component <NUM> generating a relatively small amount of heat or having a relatively low operation speed (e.g., an operation clock) may be mounted on a surface of the printed circuit board <NUM> according to various embodiments.

According to various embodiments of the disclosure, shielding members <NUM> and <NUM> covering the at least one first electronic component <NUM> and the at least one second <NUM> mounted on the printed circuit board <NUM> may be stacked over the printed circuit board <NUM>. According to an embodiment of the disclosure, the shielding member <NUM> is a shielding sheet <NUM> covering the at least one first electronic component <NUM>. According to an embodiment of the disclosure, the shielding sheet <NUM> is attached to cover the at least one first electronic component <NUM> mounted on the printed circuit board <NUM> and the shield can <NUM> may cover the at least one second electronic component <NUM> mounted on the printed circuit board <NUM>.

According to various embodiments of the disclosure, in the printed circuit board <NUM>, a thermal interface material <NUM> is stacked over the shielding sheet <NUM> and the thermal interface material <NUM> is arranged to overlap the at least one first electronic component <NUM> generating a relatively large amount of heat or having a relatively high operation speed (e.g., operation clock).

According to various embodiments of the disclosure, the area of the thermal interface material <NUM> may be substantially the same as the area of the at least one first electronic component <NUM>.

According to various embodiments of the disclosure, the area of the shielding sheet <NUM> may be larger than the area of the thermal interface material <NUM>.

<FIG> illustrates comparing an area of a printed circuit board and an area of a heat dissipation member according to an embodiment of the disclosure.

Referring to <FIG>, the area of the heat dissipation member <NUM> (e.g., <NUM> in <FIG>) according to an embodiment may be larger than the area of the shielding sheet <NUM> (e.g., <NUM> in <FIG>) and may be smaller than the area of the printed circuit board <NUM> (e.g., <NUM> in <FIG>). According to an embodiment of the disclosure, the area of the heat dissipation member <NUM> may be <NUM> to <NUM>% of the area of the printed circuit board <NUM>. According to an embodiment having this configuration, it is possible to quickly transmit heat that is generated from a portion mounted on the printed circuit board <NUM>, for example, a processor (e.g., the processor <NUM> shown in <FIG>) to the heat dissipation member <NUM> through the thermal interface material <NUM>, and it is also possible to quickly dissipate heat and secure the stability of a product by allocating a large area to the heat dissipation member <NUM>. According to an embodiment of the disclosure, at least one through-hole <NUM> in which a screw (e.g., the screw <NUM> shown in <FIG>) for fastening the heat dissipation member <NUM> to the printed circuit board <NUM> is disposed may be formed at the heat dissipation member <NUM>.

<FIG> is a cross-sectional assembly view of a printed circuit board according to an embodiment of the disclosure. <FIG> is a view <NUM> illustrating a cross-sectional structure of a printed circuit board shown in <FIG> according to an embodiment of the disclosure. Hereafter, a shielding structure and a heat dissipation structure of a printed circuit board according to an embodiment are described with reference to <FIG> and <FIG>.

Referring to <FIG> and <FIG>, the at least one first electronic component <NUM> is mounted on a surface of a printed circuit board <NUM> (e.g., <NUM> in <FIG>), and a shielding sheet <NUM> (e.g., <NUM> in <FIG>), a thermal interface material <NUM> (e.g., <NUM> in <FIG>), and a heat dissipation member <NUM> (e.g., <NUM> in <FIG>) are sequentially stacked on the at least one first electronic component <NUM>.

According to an embodiment of the disclosure, the shielding sheet <NUM> is attached to cover the at least one first electronic component <NUM> and can block an Electro Magnetic Interference (EMI) noise that is generated from the covered at least one first electronic component <NUM>. According to an embodiment of the disclosure, the shielding sheet <NUM> includes an adhesive layer <NUM>, an insulating layer <NUM>, and a conductive layer <NUM> disposed between the adhesive layer <NUM> and the insulating layer <NUM>.

According to an embodiment of the disclosure, the conductive layer <NUM> may include a plurality of nanofibers plated with copper (Cu), graphite, or nickel (Ni). According to an embodiment of the disclosure, the conductive layer <NUM> is in contact with a ground pad <NUM> disposed on the surface of the printed circuit board <NUM> at the boundary of the shielding sheet <NUM>, thereby being able to block EMI noise generated from the at least one first electronic component <NUM>.

According to various embodiments of the disclosure, the adhesive layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, so the conductive layer <NUM> of the shielding sheet <NUM> and the at least one first electronic component <NUM> can be directly in surface contact with each other. For example, the adhesive layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, so a portion of the conductive layer <NUM> is exposed and the exposed portion of the conductive layer <NUM> can be in surface contact with the at least one first electronic component <NUM> disposed thereunder. According to various embodiments of the disclosure, a thermal interface material may be provided instead of the adhesive material of the adhesive layer <NUM> at the portion of the shielding sheet <NUM> which overlaps the at least one first electronic component <NUM>. According to various embodiments of the disclosure, since the insulating layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, the conductive layer <NUM> of the shielding sheet <NUM> and the thermal interface material <NUM> are directly in surface contact with each other. The insulating layer <NUM> of the shielding sheet <NUM> is removed at the portion overlapping the at least one first electronic component <NUM>, so a portion of the conductive layer <NUM> is exposed and the exposed portion of the conductive layer <NUM> is in surface contact with the thermal interface material <NUM> disposed thereover. According to various embodiments of the disclosure, a thermal interface material is provided instead of the insulating material of the adhesive layer <NUM> at the portion of the shielding sheet <NUM> which overlaps the at least one first electronic component <NUM>.

According to an embodiment of the disclosure, the heat dissipation member <NUM> is disposed to face a surface of the printed circuit board <NUM> and is in surface contact with the thermal interface material <NUM>. According to an embodiment of the disclosure, the heat dissipation member <NUM> can receive heat generated from the at least one first electronic component <NUM> through the thermal interface material <NUM> and can diffuse the received heat.

According to an embodiment of the disclosure, the heat dissipation member <NUM> may include a heat spreader <NUM> and a fixing plate <NUM>.

According to an embodiment of the disclosure, the heat spreader <NUM> may be a heat pipe or a vapor chamber. According to an embodiment of the disclosure, the heat spreader <NUM> may be disposed between the fixing plate <NUM> and the thermal interface material <NUM> and may be in surface contact with the thermal interface material <NUM>.

According to an embodiment of the disclosure, the fixing plate <NUM> is stacked over the heat spreader <NUM> and can fix the heat dissipation member <NUM> in a flat plate shape. According to an embodiment of the disclosure, the fixing plate <NUM> may be made of Steel Used Stainless (SUS) or an alloy. According to an embodiment of the disclosure, the alloy may be a copper alloy. For example, the alloy may be a metal alloy obtained by mixing a small amount of tin or phosphorous in copper that is the base metal.

According to an embodiment of the disclosure, the heat dissipation member <NUM> is fastened to at least a portion of the circuit board <NUM> by a fixing member. For example, the fixing member may include a PEM nut ® (e.g., the PEM nut ® <NUM> shown in <FIG>) formed on the printed circuit board <NUM> or the heat dissipation member <NUM>, and a screw <NUM> inserted in the PEM nut ®. According to an embodiment having this configuration, it is possible to increase the shielding ability and the heat dissipation ability and to secure fastening strength, thereby being able to increase the reliability of a product.

According to various embodiments of the disclosure, an air layer <NUM> may be formed between the heat dissipation member <NUM> and the printed circuit board <NUM> in a region not overlapping the at least one first electronic component <NUM>.

<FIG> is a cross-sectional assembly view of a printed circuit board according to an embodiment of the disclosure. <FIG> is a view <NUM> schematically illustrating a cross-sectional structure of a printed circuit board shown in <FIG> according to an embodiment of the disclosure. Hereafter, a shielding structure and a heat dissipation structure of a printed circuit board <NUM> according to an embodiment are described with reference to <FIG> and <FIG>.

According to various embodiments not covered by the claims, the stacking order of the heat dissipation member <NUM> (e.g., <NUM> in <FIG>) is not limited to that shown in <FIG> and <FIG> and can be changed in various ways. For example, the stacking order of the heat dissipation member <NUM> may be changed like that shown in <FIG> and <FIG>.

Referring to <FIG> and <FIG>, the fixing plate <NUM> of the heat dissipation member <NUM> may be disposed between the heat spreader <NUM> and the thermal interface material <NUM>. For example, the heat dissipation member <NUM> may include a fixing plate <NUM> disposed over the thermal interface material <NUM> and a heat spreader <NUM> stacked over the fixing plate <NUM>.

According to various embodiments of the disclosure, the fixing plate <NUM> may be disposed between the heat spreader <NUM> and the thermal interface material <NUM> and a groove <NUM> exposing the heat spreader <NUM> may be formed at the portion overlapping the thermal interface material <NUM>.

According to various embodiments of the disclosure, the thermal interface material <NUM> may be in surface contact with the heat spreader <NUM> through the groove <NUM>. According to an embodiment of the disclosure, the area of the groove <NUM> may be larger than the area of the thermal interface material <NUM>.

Components not described with reference to <FIG> and <FIG> may be substantially the same as the components described with reference to <FIG> and <FIG>. Accordingly, for a description of <FIG> and <FIG>, reference is to be made to the description of components not described with reference to <FIG> and <FIG>.

For example, according to an embodiment of the disclosure, the module may be implemented in a form of an application-specific integrated circuit (ASIC).

A method according to various embodiments of the disclosure may be included and provided in a computer program product.

Claim 1:
An electronic device (<NUM>) comprising:
a circuit board (<NUM>);
at least one electronic component mounted on a surface of the circuit board (<NUM>);
a shielding sheet (<NUM>) attached to the surface of the circuit board (<NUM>) to cover the at least one electronic component;
a thermal interface material, TIM (<NUM>), stacked on the shielding sheet (<NUM>) to overlap the at least one electronic component; and
a heat dissipation member (<NUM>) disposed to face the surface of the circuit board (<NUM>), being in surface contact with the thermal interface material (<NUM>), and fastened to at least a portion of the circuit board (<NUM>) by a fixing member;
wherein the shielding sheet (<NUM>) includes an adhesive layer (<NUM>), an insulating layer (<NUM>), and a conductive layer (<NUM>) disposed between the adhesive layer (<NUM>) and the insulating layer (<NUM>);
wherein the insulating layer (<NUM>) is removed from a portion of the shielding sheet (<NUM>) overlapping the at least one electronic component, and
wherein a portion of the conductive layer (<NUM>) is exposed and is in surface contact with the thermal interface material (<NUM>), the thermal interface material (<NUM>) being disposed above the portion of the conductive layer.