This application claims benefit of priority to Korean Patent Application No. 10-2018-0123049 filed on Oct. 16, 2018 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
The present disclosure relates to a semiconductor package including a semiconductor chip and a passive component.
In the field of semiconductor packaging technology, there has been continuous demand for small-sized semiconductor chips in terms of a form of a semiconductor chip, and in terms of functions of a semiconductor chip, a technique of a system in package (SiP) requiring complexation and multifunctionality has been demanded. To achieve this, there has been increased interest in a technique of mounting a plurality of chips and components in a single package.
Particularly, in the semiconductor package including an IC chip and passive components, there is demand for a structure for preventing defects such as cracks and interface peeling due to a difference in coefficients of thermal expansion (CTE) between an encapsulant for encapsulating the passive components and a connection structure for the lower redistribution.
An aspect of the present disclosure is to provide a semiconductor package capable of preventing occurrence of defects of the connection structure in a lower portion of the passive component.
According to an aspect of the present disclosure, in a semiconductor package, a position of an insulating region of the connection structure in a lower portion of the passive component is optimized.
For example, a semiconductor package includes: a semiconductor chip having an active surface on which a connection pad is disposed and an inactive surface opposing the active surface; a passive component disposed in parallel with the semiconductor chip and having a connection electrode; a connection structure disposed on the active surface of the semiconductor chip and a lower surface of the passive component, and including a redistribution layer electrically connected to the connection pad; and an encapsulant covering at least portions of each of the semiconductor chip and the passive component, wherein the connection structure further comprises a first metal layer electrically connected to the connection electrode, a second metal layer located on the same level as the first metal layer and disposed adjacent to the first metal layer, the second metal layer being spaced apart from the first metal layer, and a wiring insulating layer having an insulating region filling a space between the first and second metal layers and extending in one direction. The insulating region overlaps with the passive component in a stacking direction and at least a portion of the insulating region overlaps with the connection electrode. A minimum width of the insulating region between the first and second metal layers is referred to as a first width, a shortest distance between one end of the passive component and one end of the insulating region on the same level is referred to as a spacing distance, and the spacing distance is twice or more than the first width.
The above and other aspects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description, taken in conjunction with the accompanying drawings, in which:
Hereinafter, embodiments of the present disclosure will be described as follows with reference to the attached drawings. In the drawings, sizes and shapes of elements will be exaggerated or reduced for clear description.
Electronic Device
Referring to
The chip associated components 1020 may include a memory chip such as a volatile memory (for example, a dynamic random access memory (DRAM)), a non-volatile memory (for example, a read only memory (ROM)), a flash memory, or the like; an application processor chip such as a central processor (for example, a central processing unit (CPU)), a graphics processor (for example, a graphics processing unit (GPU)), a digital signal processor, a cryptographic processor, a microprocessor, a microcontroller, or the like; and a logic chip such as an analog-to-digital converter, an application-specific integrated circuit (ASIC), or the like, or the like. However, the chip associated components 1020 are not limited thereto, and may include other types of chip associated components. In addition, the chip-associated components 1020 may be combined with each other.
The network associated components 1030 may include protocols such as wireless fidelity (Wi-Fi) (Institute of Electrical And Electronics Engineers (IEEE) 802.11 family, or the like), worldwide interoperability for microwave access (WiMAX) (IEEE 802.16 family, or the like), IEEE 802.20, long term evolution (LTE), evolution data only (Ev-DO), high speed packet access+(HSPA+), high speed downlink packet access+(HSDPA+), high speed uplink packet access+(HSUPA+), enhanced data GSM environment (EDGE), global system for mobile communications (GSM), global positioning system (GPS), general packet radio service (GPRS), code division multiple access (CDMA), time division multiple access (TDMA), digital enhanced cordless telecommunications (DECT), Bluetooth®, 3 G, 4G, and 5G protocols, and any other wireless and wired protocols, designated after the abovementioned protocols. However, the network associated components 1030 are not limited thereto, but may also include a variety of other wireless or wired standards or protocols. In addition, the network associated components 1030 may be combined with each other, together with the chip associated components 1020 described above.
Other components 1040 may include a high frequency inductor, a ferrite inductor, a power inductor, ferrite beads, a low temperature co-fired ceramic (LTCC), an electromagnetic interference (EMI) filter, a multilayer ceramic capacitor (MLCC), or the like. However, other components 1040 are not limited thereto, but may also include passive components used for various other purposes, or the like. In addition, other components 1040 may be combined with each other, together with the chip related components 1020 or the network related components 1030 described above.
Depending on a type of the electronic device 1000, the electronic device 1000 includes other components that may or may not be physically or electrically connected to the mainboard 1010. These other components may include, for example, a camera 1050, an antenna 1060, a display 1070, a battery 1080, an audio codec (not illustrated), a video codec (not illustrated), a power amplifier (not illustrated), a compass (not illustrated), an accelerometer (not illustrated), a gyroscope (not illustrated), a speaker (not illustrated), a mass storage unit (for example, a hard disk drive) (not illustrated), a compact disk (CD) drive (not illustrated), a digital versatile disk (DVD) drive (not illustrated), or the like. However, these other components are not limited thereto, but may also include other components used for various purposes depending on a type of electronic device 1000, or the like.
The electronic device 1000 may be a smartphone, a personal digital assistant (PDA), a digital video camera, a digital still camera, a network system, a computer, a monitor, a tablet PC, a laptop PC, a netbook PC, a television, a video game machine, a smartwatch, an automotive component, or the like. However, the electronic device 1000 is not limited thereto, and may be any other electronic device able to process data.
Referring to
Semiconductor Package
Generally, numerous fine electrical circuits are integrated in a semiconductor chip. However, the semiconductor chip may not serve as a finished semiconductor product in itself, and may be damaged due to external physical or chemical impacts. Therefore, the semiconductor chip itself may not be used, but may be packaged and used in an electronic device, or the like, in a packaged state.
Here, semiconductor packaging is required due to the existence of a difference in a circuit width between the semiconductor chip and a mainboard of the electronic device in terms of electrical connections. In detail, a size of connection pads of the semiconductor chip and an interval between the connection pads of the semiconductor chip are very fine, but a size of component mounting pads of the mainboard used in the electronic device and an interval between the component mounting pads of the mainboard are significantly larger than those of the semiconductor chip. Therefore, it may be difficult to directly mount the semiconductor chip on the mainboard, and packaging technology for buffering a difference in a circuit width between the semiconductor chip and the mainboard is required.
A semiconductor package manufactured by the packaging technology may be classified as a fan-in semiconductor package or a fan-out semiconductor package depending on a structure and a purpose thereof.
The fan-in semiconductor package and the fan-out semiconductor package will hereinafter be described in more detail with reference to the drawings.
Fan-In Semiconductor Package
Referring to
Therefore, a connection structure 2240 may be formed depending on a size of the semiconductor chip 2220 on the semiconductor chip 2220 in order to redistribute the connection pads 2222. The connection structure 2240 may be formed by forming an insulating layer 2241 on the semiconductor chip 2220 using an insulating material such as a photoimagable dielectric (PID) resin, forming via holes 2243h opening the connection pads 2222, and then forming wiring patterns 2242 and vias 2243. Then, a passivation layer 2250 protecting the connection structure 2240 may be formed, an opening 2251 may be formed, and an underbump metal layer 2260, or the like, may be formed. That is, a fan-in semiconductor package 2200 including, for example, the semiconductor chip 2220, the connection structure 2240, the passivation layer 2250, and the underbump metal layer 2260 may be manufactured through a series of processes.
As described above, the fan-in semiconductor package may have a package form in which all of the connection pads, for example, input/output (I/O) terminals, of the semiconductor chip are disposed inside the semiconductor chip, and may have excellent electrical characteristics and be produced at low cost. Therefore, many elements mounted in smartphones have been manufactured in a fan-in semiconductor package form. In detail, many elements mounted in smartphones have been developed to implement a rapid signal transfer while having a compact size.
However, since all I/O terminals need to be disposed inside the semiconductor chip in the fan-in semiconductor package, the fan-in semiconductor package has significant spatial limitations. Therefore, it is difficult to apply this structure to a semiconductor chip having a large number of I/O terminals or a semiconductor chip having a compact size. In addition, due to the disadvantage described above, the fan-in semiconductor package may not be directly mounted and used on the mainboard of the electronic device. Here, even in a case in which a size of the I/O terminals of the semiconductor chip and an interval between the I/O terminals of the semiconductor chip are increased by a redistribution process, the size of the I/O terminals of the semiconductor chip and the interval between the I/O terminals of the semiconductor chip may not be sufficient to directly mount the fan-in semiconductor package on the mainboard of the electronic device.
Referring to
As described above, it may be difficult to directly mount and use the fan-in semiconductor package on the mainboard of the electronic device. Therefore, the fan-in semiconductor package may be mounted on the separate interposer substrate and be then mounted on the mainboard of the electronic device through a packaging process or may be mounted and used on the mainboard of the electronic device in a state in which it is embedded in the interposer substrate.
Fan-Out Semiconductor Package
Referring to
As described above, the fan-out semiconductor package may have a form in which I/O terminals of the semiconductor chip are redistributed and disposed outwardly of the semiconductor chip through the connection structure formed on the semiconductor chip. As described above, in the fan-in semiconductor package, all I/O terminals of the semiconductor chip need to be disposed inside the semiconductor chip. Therefore, when a size of the semiconductor chip is decreased, a size and a pitch of balls need to be decreased, such that a standardized ball layout may not be used in the fan-in semiconductor package. On the other hand, the fan-out semiconductor package has the form in which the I/O terminals of the semiconductor chip are redistributed and disposed outwardly of the semiconductor chip through the connection structure formed on the semiconductor chip as described above. Therefore, even in a case that a size of the semiconductor chip is decreased, a standardized ball layout may be used in the fan-out semiconductor package as it is, such that the fan-out semiconductor package may be mounted on the mainboard of the electronic device without using a separate printed circuit board, as described below.
Referring to
As described above, since the fan-out semiconductor package may be mounted on the mainboard of the electronic device without using the separate interposer substrate, the fan-out semiconductor package may be implemented at a thickness lower than that of the fan-in semiconductor package using the interposer substrate. Therefore, the fan-out semiconductor package may be miniaturized and thinned. In addition, the fan-out semiconductor package has excellent thermal characteristics and electrical characteristics, such that it is particularly appropriate for a mobile product. Therefore, the fan-out electronic component package may be implemented in a form more compact than that of a general package-on-package (POP) type using a printed circuit board (PCB), and may solve a problem due to the occurrence of a warpage phenomenon.
Meanwhile, the fan-out semiconductor package refers to package technology for mounting the semiconductor chip on the mainboard of the electronic device, or the like, as described above, and protecting the semiconductor chip from external impacts, and is a concept different from that of a printed circuit board (PCB) such as an interposer substrate, or the like, having a scale, a purpose, and the like, different from those of the fan-out semiconductor package, and having the fan-in semiconductor package embedded therein.
Hereinafter, a semiconductor package, capable of preventing defects in the connection structure in a lower portion of the passive component will be described with reference to the drawings.
Referring to
In particular, the connection structure 140 may further include a first metal layer 142P1 disposed on a plane so as to be overlapped with a portion of the passive component 125 and electrically connected to connection electrodes 125E1 and 125E2, a second metal layer 142P2 disposed adjacent to the first metal layer 142P1, and the second insulating layer 141b having insulating regions 141S1 and 141S2 extending in one direction between the first and second metal layers 142P1 and 142P2. The first redistribution layer 142a may include the first and second metal layers 142P1 and 142P2, and the second insulating layer 141b may include the insulating layers 141S1 and 141S2. The second metal layer 142P2 may be disposed between the first metal layers 142P1. The first metal layers 142P1 may be connected to the connection structures 125E1 and 125E2, respectively, which are not connected to the second metal layer 142P2. Or the second metal layer 142P2 may receive a separate electrical signal without being connected to the connection electrodes 125E1 and 125E2. In this case, for example, a ground voltage may be applied to the second metal layer 142P2.
The insulating regions 141S1 and 141S2 may be regions extending in parallel with the end portion in a region adjacent to end portions of the first and second passive components 125a and 125b. The insulating regions 141S1 and 141S2 may be disposed such that an entirety of the insulating regions 141S1 and 141S2 overlap with the first and second passive components 125a and 125b on the plane, and at least portions thereof overlap with the connection electrodes 125E1 and 125E2. This will be described in more detail below with reference to
The first insulating layer 141a in an uppermost portion of the connection structure 140 and the second insulating layer 141b in a lower portion thereof may be made of different materials. For example, the first insulating layer 141a may be formed of a non-photosensitive material, and the second insulating layer 141b may be formed of a photosensitive material. For example, the first insulating layer 141a may be an Ajinomoto Build-up Film (ABF), and the second insulating layer 141b may be a PID resin. The first encapsulant 131 may encapsulate at least a portion of the lower surface of the passive component 125, and for example, may include the same or similar material as the first insulating layer 141a. In this case, when a difference in coefficient expansion (CTE) may occur between the passive components 125, the first insulating layer 141a, the second insulating layer 141b, and the metal layers 141P1 and 141P2, having different materials, and when the end portion of the passive component 125, that is, side surfaces thereof are disposed in parallel to a direction perpendicular to the end portions of the metal layers 142P1 and 142P2, stress may be concentrated on the end portions, such that defects such as cracks and peeling may occur in the connection structure 140. However, in the semiconductor package 100A according to an example, since the insulating regions 141S1 and 141S2 between the metal layers 142P1 and 142P2 are disposed in a lower portion of the passive component 125 by a predetermined distance, such that the occurrence of such defects may be significantly reduced. In particular, since the spacing distance is specifically limited in relation to the width of the insulating regions 141S1 and 141S2, the disposition of the metal layers 142P1 and 142P2 may be efficiently optimized while significantly reducing the occurrence of defects and the resistance between the metal layers 142P1 and 142P2 and the connection electrodes 125E1 and 125E2 may be secured.
Hereinafter, each configuration included in the semiconductor package 100A according to an example will be described in more detail.
The frame 110 may improve rigidity of the semiconductor package 100A depending on certain materials, and serve to secure uniformity of thicknesses of the first and second encapsulants 131 and 132. The frame 110 has a plurality of first and second through-holes 110HA1 and 110HA2, and 110HB. The first and second through-holes 110HA1 and 110HA2, and 110HB may be disposed to be physically spaced apart from each other. The first through-holes 110HA1 and 110HA2 may penetrate the frame 110, while the passive component 125 may be disposed in the first through-holes 110HA1 and 110HA2. As illustrated in
The frame 110 may include a frame insulating layer 111 and a metal layer 115 surrounding the frame insulating layer 111. An insulating material may be used as the material of the frame insulating layer 111. In this case, the insulating material may be a thermosetting resin such as an epoxy resin, a thermoplastic resin such as a polyimide resin, an insulating material in which the thermosetting resin or the thermoplastic resin is impregnated together with an inorganic filler in a core material such as a glass fiber (or a glass cloth or a glass fabric), for example, prepreg, Ajinomoto Build-up Film (ABF), FR-4, Bismaleimide Triazine (BT), or the like. Such a frame 110 may serve as a supporting member.
The metal layer 115 may be disposed in an inner side wall of each of the first through-holes 110HA1 and 110HA2 and the second through-hole 110HB. As illustrated in
The semiconductor chip 120 may be an integrated circuit (IC) provided in an amount of several hundred to several million or more elements integrated in a single chip. The IC may be, for example, a processor chip such as a central processor (for example, a central processing unit (CPU)), a graphics processor (for example, a graphics processing unit (GPU)), a field programmable gate array (FPGA), a digital signal processor, a cryptographic processor, a microprocessor, a microcontroller, or the like, in detail, an application processor (AP). However, the present disclosure is not limited thereto, and the semiconductor chip may be a logic chip such as an analog-to-digital converter (ADC), an application-specific integrated circuit (ASIC), or the like, or a memory chip such as a volatile memory (for example, a dynamic random access memory (DRAM)), a non-volatile memory (for example, a read only memory (ROM)), a flash memory, or the like, but is not limited thereto Moreover, these chip related components are also combined.
In the semiconductor chip 120, a side, on which connection pad 122 is disposed, is an active surface, and the opposite side is an inactive surface. The semiconductor chip 120 may be formed on the basis of an active wafer. In this case, a base material of a body 121 of the semiconductor chip 120 may be silicon (Si), germanium (Ge), gallium arsenide (GaAs), or the like. Various circuits may be formed on the body 121. The connection pads 122 may electrically connect the semiconductor chip 120 to other components. A material of each of the connection pads 122 may be a conductive material such as aluminum (Al), or the like. A passivation film 123 exposing the connection pads 122 may be formed on the body 121, and may be an oxide film, a nitride film, or the like, or a double layer of an oxide film and a nitride film.
Each of the passive components 125 may be a capacitor such as a multilayer ceramic capacitor (MLCC) or a low inductance chip capacitor (LICC), an inductor such as a power inductor, a bead, or the like, independently. For example, among the passive components 125 as illustrated in
The first encapsulant 131 may fill at least portions of the first through-holes 110HA1 and 110HA2, and may encapsulate one or more passive components 125. An encapsulation form of the first encapsulant 131 is not particularly limited, but may be a form in which the first encapsulant 131 surrounds at least portions of the passive component 125. The first encapsulant 131 may cover at least portions of an upper surface and a lower surface of the passive component 125, and may fill at least a portion of a space between wall surfaces of the first through-holes 110HA1 and 110HA2 and side surfaces of a plurality of passive components 125. The first encapsulant 131 may extend to the frame 110 to be disposed on the frame 110, and may be in contact with an upper surface of the metal layer 115.
The second encapsulant 132 may fill at least a portion of the second through-hole 110HB, while encapsulating the semiconductor chip 120. An encapsulation form of the second encapsulant 132 is not particularly limited, but may be a form in which the second encapsulant 132 surrounds at least a portion of the semiconductor chip 120. In this case, the second encapsulant 132 may cover at least portions of the frame 110 and an inactive surface of the semiconductor chip 120, and fill at least a portion of a space between a wall surface of the second through-hole 110HB and a side surface of the semiconductor chip 120. Meanwhile, the second encapsulant 132 may fill the second through-hole 110HB to thus serve as an adhesive for fixing the semiconductor chip 120 and reduce buckling at the same time, depending on certain materials. The second encapsulant 132 is disposed in an upper portion of the semiconductor chip 120 as described above, may extend to upper portions of the passive component 125 and the frame 110, and may be disposed on the first encapsulant 131, on the passive components 125 and the frame 110. Thus, the first and second encapsulants 131 and 132 are stacked sequentially and disposed on the passive component 125 and the frame 110. The second encapsulant 132 may be only one of the first encapsulant 131 and the second encapsulant 132 that is disposed on the semiconductor chip 120.
The first and second encapsulants 131 and 132 may include an insulating material. The insulating material may be a material containing an inorganic filler and an insulating resin, for example, a thermosetting resin such as an epoxy resin, a thermoplastic resin such as a polyimide, or a resin in which a reinforcement such as an inorganic filler is contained in the thermosetting resin or the thermoplastic resin, in detail, an Ajinomoto build-up film (ABF), an FR-4 resin, a bismaleimide triazine (BT) resin, a resin, or the like. Moreover, an epoxy molding compound (EMC), a photo imageable encapsulant (PIE), or the like, may be used therefor. As needed, a material in which an insulating resin such as the thermosetting resin or the thermoplastic resin is impregnated in an inorganic filler together with a core material such as a glass fiber, may be used. The first and second encapsulants 131 and 132 may include the same or different materials.
The connection structure 140 may redistribute the connection pads 122 of the semiconductor chip 120. Several tens to several hundreds of connection pads 122 of the semiconductor chip 120 having various functions may be redistributed by the connection structure 140, and may be physically and/or electrically externally connected through the electrical connection metal 170 depending on functions. The connection structure 140 may include the number of insulating layers, redistribution layers, and vias, greater than illustrated in the drawings.
The second redistribution layer 142b, among the redistribution layers 142a and 142b, may substantially serve to redistribute the connection pads 122, and a formation material thereof may be a conductive material such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or alloys thereof. The redistribution layers 142a and 142b may perform various functions depending on designs of corresponding layers. For example, the redistribution layers 142a and 142b may include ground (GND) pattern layers 142G, and may further include power (PWR) patterns, signal (S) patterns, and the like. Here, the signal (S) patterns may include various signals except for the ground (GND) signals, the power (PWR) signals, and the like, such as data signals, and the like. Moreover, the redistribution layers 142a and 142b may include via pad patterns, electrical connection metal pad patterns, and the like.
The vias 143a and 143b may electrically connect the redistribution layers 142a and 142b, the connection pads 122, the passive component 125, and the like, formed on different layers, to each other, resulting in an electrical path in the semiconductor package 100A. A material of each of the vias 143a, and 143b may be a conductive material such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or alloys thereof. Each of the vias 143a and 143b may be completely filled with a conductive material, or the conductive material may be formed along a wall of a via hole. In addition, the vias 143a and 143b may have all shapes known in the related art, such as a tapered shape, a cylindrical shape, and the like.
A backside redistribution layer 135 may be disposed on the second encapsulant 132 to cover the semiconductor chip 120 and the passive component 125. The backside redistribution layer 135 may be connected to the metal layer 115 of the frame 110 through a backside via 133 penetrating the first and second encapsulants 131 and 132. The semiconductor chip 120 and the passive component 125 are surrounded by a metal material through the backside via 133, such that an EMI shielding effect and a heat dissipation effect may be further improved. The backside redistribution layer 135 and the backside via 133 may also include a conductive material such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or alloys thereof. The backside redistribution layer 135 and the backside via 133 may also be used as a ground and in this case, may be electrically connected to the ground of the redistribution layers 142a and 142b of the connection structure 140 via the metal layer 115. The backside redistribution layer 135 may be in a form of a plate covering most of the upper surface of the second encapsulant 132. The backside via 133 may be in a form of a trench via having a predetermined length. In this case, moving paths of electromagnetic waves become substantially clogged, and the electromagnetic wave shielding effect may be more excellent. However, the present disclosure is not limited thereto, and the backside redistribution layer 135 may have a form including a plurality of plates, in a range in which an effect of shielding electromagnetic waves is provided, and openings may be formed in the middle of the backside via 133 to provide a gas movement path.
The first passivation layer 150 may protect the connection structure 140 from external physical or chemical damage. The first passivation layer 150 may have an opening exposing at least a portion of the second redistribution layer 142b of the connection structure 140. The number of openings, formed in the first passivation layer 150, may be several tens to several thousands. A material of the first passivation layer 150 is not particularly limited. For example, an insulating material may be used. In this case, the insulating material may be a thermosetting resin such as an epoxy resin, a thermoplastic resin such as a polyimide resin, a resin in which the thermosetting resin or the thermoplastic resin is mixed with an inorganic filler or is impregnated together with an inorganic filler in a core material such as a glass fiber (or a glass cloth or a glass fabric), for example, prepreg, Ajinomoto Build-up Film (ABF), FR-4, Bismaleimide Triazine (BT), or the like. Alternatively, a solder resist may also be used therefor. A second passivation layer 180 may also be formed on the backside redistribution layer 135 to protect the backside redistribution layer 135. The first passivation layer 150 and the second passivation layer 180 may include the same material, thereby serving to control a coefficient of thermal expansion (CTE) due to an effect of symmetry.
The underbump metal layer 160 may improve connection reliability of the electrical connection metal 170 to improve board level reliability of the semiconductor package 100A. The underbump metal layer 160 may be connected to the second redistribution layer 142b of the connection structure 140, exposed through the openings of the first passivation layer 150. The underbump metal layer 160 may be formed in the openings of the first passivation layer 150 by any known metallization method using any known conductive material such as a metal, but is not limited thereto.
The electrical connection metal 170 physically and/or electrically connects the semiconductor package 100A to an external power source. For example, the semiconductor package 100A may be mounted on the mainboard of the electronic device through the electrical connection metal 170. The electrical connection metal 170 may be formed of a conductive material, for example, a solder or the like. However, this is only an example, and a material of each of the electrical connection metal 170 is not particularly limited thereto. Each of the electrical connection metals 170 may be a land, a ball, a pin, or the like. The electrical connection metals 170 may be formed as a multilayer or single layer structure. When the electrical connection metal 170 includes the plurality of layers, the electrical connection metal may include a copper pillar and a solder. When the electrical connection metal 170 includes the single layer, the electrical connection metal 170 may include a tin-silver solder or copper. However, the electrical connection metal is only an example, and the present disclosure is not limited thereto. The number, an interval, a disposition form, and the like, of the electrical connection metals 170 are not particularly limited, but may be sufficiently modified depending on design particulars by those skilled in the art. For example, the electrical connection metals 170 may be provided in an amount of several tens to several thousands, or may be provided in an amount of several tens to several thousands or more or several tens to several thousands or less.
At least one of the electrical connection metals 170 may be disposed in a fan-out region of the semiconductor chip 120. The fan-out region refers to a region except for a region in which the semiconductor chip 120 is disposed. The fan-out package may have excellent reliability as compared to a fan-in package, may allow a plurality of input/output (I/O) terminals to be implemented, and may facilitate a 3D interconnection. In addition, as compared to a ball grid array (BGA) package, a land grid array (LGA) package, or the like, the fan-out package may be manufactured to have a small thickness, and may have price competitiveness.
Referring to
In the lower portion of the first passive component 125a, the first insulating region 141S1 may have a first length LS1, and may be spaced apart by a first spacing distance D1 along a y direction perpendicular to a x direction, from an end portion of the first passive component 125a extending in the x direction while facing the second passive component 125b. In the lower portion of the second passive component 125b, the second insulating region 141S2 may have a second length LS2, and may be spaced apart by a second spacing distance D2 from an end portion of the second passive component 125b opposing the first passive component 125a. In the lower portion of the third passive component 125c, the third insulating region 141S3 may have a third length LS3, and may be spaced apart by a third spacing distance D3 from an end portion of the third passive component 125c. The first to third spacing distances D1, D2, and D3 may be twice or more of the width in the y direction of the insulating regions 141S1, 141S2, and 141S3, respectively.
However, it is not necessarily that all of the insulating regions in the lower portion of all the passive components 125 are disposed to be spaced apart by a predetermined distance from the adjacent end portion of the passive component 125, such as the first to third insulating regions 141S1, 141S2, and 141S3. The insulating regions may be disposed in the form of the present disclosure in at least the portions of the passive components 125, and at least a portion of the insulating region may be disposed even in the lower portion of the passive component 125 as described above. As shown in Table 1 below, various kinds of passive components 125 may be mounted in one package, and the passive components 125 may have different sizes. In Table 1, a length may mean a dimension of the passive component 125 in the x direction of the drawing, and a width may mean a dimension of the passive component 125 in the y direction. As shown in Table 1, when the passive component 125 has a size, greater than a specific size, cracks tend to occur. Thus, when the passive component has a predetermined width or more, for example, a minimum width of 1 mm or more, a width along a minor axis, the insulating region may be spaced apart by a spacing distance from the adjacent end portion of the passive component 125 as described above. For example, in
In addition, according to embodiments, when warpage of the package mainly occurs in a specific direction, and accordingly, the progress of cracks is affected, the insulating region adjacent to the end portion along a direction in which the crack mainly proceeds may be disposed to be spaced apart by a predetermined distance from the adjacent end portion of the passive component 125 such as the first to the third insulating regions 141S1, 141S2, and 141S3. That is, among the insulating regions adjacent to the first to third passive components 125a, 125b, and 125c, in particular, an insulating region including the first to third insulating regions 141S1, 141S2, and 141S3 extending in the x direction may be disposed in the form of the present disclosure. For example, in
In the first to fifth embodiments of
The first to third spacing distances D1, D2, and D3 may range from about 1.5% to 15.0% of the width in the y direction of the first to third passive components 125a, 125b, and 125c. When the spacing distance is greater than the above-mentioned range, the electrical resistance between the connection electrodes 125E1 and 125E2 and the metal layers 142P1 and 142P2 may increase, and when the spacing distance is smaller than the above-mentioned range, a failure of the connection structure 140 may occur. In addition, the lengths LS1, LS2, and LS3 may range from about 10.0% to 35.0% of the width in the x direction of the first to third passive components 125a, 125b, and 125c. When the length is smaller than the above-mentioned range, the contact area between the connection electrodes 125E1 and 125E2 and the metal layers 142P1 and 142P2 may decrease and the resistance may increase. When the length is greater than the above-mentioned range, the length extending in parallel with the end portion may increase, such that the failure rate of the connection structure 140 may increase.
In the embodiments, the first to third insulating regions 141S1, 141S2, and 141S3 along one direction, for example, the x direction, may have a length ranging from about 10.0% to 25.0% of the width in the x direction of the first to third passive components 125a, 125b, and 125c, particularly ranging from about 10.0% to 29.0%, and may have a spacing distance ranging from about 1.5% to 15.0% of the width in the y direction, particularly ranging from about 7.0% to 13.0%, in a region adjacent to the first to third passive components 125a, 125b, and 125c. In addition, when the first and second passive components 125a and 125b corresponding to a case in which the passive component 125 having the largest size in the package is disposed to face each other, at least one of the insulating regions 141S1 and 141S2 along the end portions opposing each other may be disposed in a lower portion by a distance of two or more of the width of the insulating region, and may have a length less than 26.0% of the width in the x direction of the first and second passive components 125a and 125b.
Referring to Table 3, in the first to fifth embodiments, the occurrence rate of cracks was 0 to 0.21%, as compared with the occurrence rate of cracks in the comparative example was 22.36% on average. Therefore, it can be seen that the occurrence of cracks in the connection structure 140 may be reduced by the disposition of the metal layers 142P1 and 142P2 and thus the positions of the insulating regions 141S1, 141S2, and 141S3.
Referring to
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As set forth above, according to an embodiment in the present disclosure, a semiconductor package capable of preventing occurrence of defects of a connection structure in a lower portion of the passive component may be provided.
The present disclosure may, however, be exemplified in many different forms and should not be construed as being limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Throughout the specification, it will be understood that when an element, such as a layer, region or wafer (substrate), is referred to as being “on,” “connected to,” or “coupled to” another element, it can be directly “on,” “connected to,” or “coupled to” the other element or other elements intervening therebetween may be present. In contrast, when an element is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element, there may be no elements or layers intervening therebetween. Like numerals refer to like elements throughout. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
It will be apparent that though the terms first, second, third, etc. may be used herein to describe various members, components, regions, layers and/or sections, these members, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section discussed below could be termed a second member, component, region, layer or section without departing from the teachings of the exemplary embodiments.
Spatially relative terms, such as “above,” “upper,” “below,” and “lower” and the like, may be used herein for ease of description to describe one element's relationship to another element(s) as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “above,” or “upper” other elements would then be oriented “below,” or “lower” the other elements or features. Thus, the term “above” can encompass both the above and below orientations depending on a particular direction of the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein may be interpreted accordingly.
The terminology used herein describes particular embodiments only, and the present disclosure is not limited thereby. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” and/or “comprising” when used in this specification, specify the presence of stated features, integers, steps, operations, members, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, elements, and/or groups thereof.
Hereinafter, embodiments of the present disclosure will be described with reference to schematic views illustrating embodiments of the present disclosure. In the drawings, for example, due to manufacturing techniques and/or tolerances, modifications of the shape shown may be estimated. Thus, embodiments of the present disclosure should not be construed as being limited to the particular shapes of regions shown herein, for example, to include a change in shape results in manufacturing. The following embodiments may also be constituted by one or a combination thereof.
The contents of the present disclosure described below may have a variety of configurations and propose only a required configuration herein, but are not limited thereto.
While the exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and variations could be made without departing from the scope of the present invention as defined by the appended claims.
Number | Date | Country | Kind |
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10-2018-0123049 | Oct 2018 | KR | national |