WO2011024939A1 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- WO2011024939A1 WO2011024939A1 PCT/JP2010/064562 JP2010064562W WO2011024939A1 WO 2011024939 A1 WO2011024939 A1 WO 2011024939A1 JP 2010064562 W JP2010064562 W JP 2010064562W WO 2011024939 A1 WO2011024939 A1 WO 2011024939A1
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- insulating layer
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- H10W70/611—Insulating or insulated package substrates; Interposers; Redistribution layers for connecting multiple chips together
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- H10W70/08—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers by depositing layers on the chip or wafer, e.g. "chip-first" RDLs
- H10W70/09—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers by depositing layers on the chip or wafer, e.g. "chip-first" RDLs extending onto an encapsulation that laterally surrounds the chip or wafer, e.g. fan-out wafer level package [FOWLP] RDLs
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- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in printed circuit boards [PCB], e.g. insert-mounted components [IMC]
- H05K1/185—Printed circuits structurally associated with non-printed electric components associated with components mounted in printed circuit boards [PCB], e.g. insert-mounted components [IMC] associated with components encapsulated in the insulating substrate of the PCBs; associated with components incorporated in internal layers of multilayer circuit boards
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- H10W72/241—Dispositions, e.g. layouts
- H10W72/244—Dispositions, e.g. layouts relative to underlying supporting features, e.g. bond pads, RDLs or vias
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- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
- H10W74/131—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being only partially enclosed
- H10W74/142—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being only partially enclosed the encapsulations exposing the passive side of the semiconductor body
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- H10W90/731—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
- H10W90/734—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked insulating package substrate, interposer or RDL
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- H10W90/736—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the present invention relates to a semiconductor device in which a semiconductor chip is embedded in an insulating layer and a wiring conductor is formed on the insulating layer, and a manufacturing method thereof, and more particularly, a semiconductor chip having a large number of external terminals and a small pitch of external terminals.
- the present invention relates to a semiconductor device using the semiconductor device and a manufacturing method thereof.
- semiconductor devices called “chip-embedded substrates” in which individual semiconductor chips or the like are embedded in an insulating layer such as a resin substrate, and semiconductor devices in which an insulating resin layer and a wiring layer are formed on a semiconductor chip have attracted attention. Yes.
- an individualized chip produced by dividing a group of chips formed on a wafer at once by dicing or the like is mounted on a support substrate, and a support including the individualized chips is provided.
- An insulating layer and a metal wiring layer are formed on the substrate to form an external lead pad.
- the base surface of the IC chip 103 is bonded to the metal heat radiating plate 101 with the metal paste 102, and the IC chip 103 bonded to the metal heat radiating plate 101 is disposed around and on the upper side.
- a plurality of insulating resin layers 104a, 104b, and 104c are formed, and the mounting pad 131 of the IC chip 103 is joined to the wiring conductor 107 formed by plating in the through hole of the lowermost insulating resin layer 104a to provide insulation.
- the BGA mounting pad is connected to the BGA mounting pad 108 formed on the surface of the uppermost insulating resin layer 104c via the wiring conductor 107 formed by plating on the surface of the layer resin layer 104b and the inside of the through hole.
- a ball grid array package having a BGA solder bump 109 formed thereon is disclosed (108). Come Example 1; see FIG. 5).
- interlayer resin insulating layers 250 and 251 and conductor circuits 258 and 259 are repeatedly formed on the core substrate 230, via holes 260 and 261 are formed in the interlayer resin insulating layers 250 and 251;
- substrate 230 is disclosed. (Conventional example 2; see FIG. 6).
- JP 2001-332863 A (FIGS. 1 to 5 and 7)
- Patent Documents 1 and 2 are incorporated herein by reference. The following analysis is given by the present invention.
- Patent Documents 1 and 2 have the following problems.
- a plurality of chips are mounted on a support plate and are simultaneously applied to the plurality of semiconductor chips. It is desirable to form an insulating layer (in a lump) to form vias and wiring.
- an insulating layer in a lump
- vias are formed with a laser or the like, and a plating resist connected to the vias is formed on the insulating layer. Then, exposure is performed in a lump using a mask extending to the semiconductor chip region, and then development and plating wiring are formed.
- the positioning mark is formed on the core substrate with reference to the alignment mark of each IC chip.
- the shrinkage of the IC chip is not taken into consideration, the same as described above due to the chip shrinkage. Problems arise. Further, the technique described in Patent Document 2 has a problem that the pad position and the via position are shifted after the chip contraction because the pad position shift is not considered due to the chip contraction in mounting a plurality of chips.
- the main object of the present invention is to provide a semiconductor device that can be applied to a semiconductor chip having a large number of terminals and a narrow pitch, and has a high yield and excellent reliability, and a manufacturing method thereof.
- the semiconductor chip in a semiconductor device in which a semiconductor chip having an external terminal is embedded in an insulating layer and a wiring conductor is formed on the insulating layer, the semiconductor chip is formed on the insulating layer.
- a pilot hole is formed at a position corresponding to the external terminal in a state where the semiconductor chip is contracted after being embedded, and the wiring conductor is electrically connected to the external terminal through the pilot hole.
- the wiring conductor is formed so as to correspond to the external terminal after the semiconductor chip is embedded and the semiconductor chip is contracted, and is embedded in the pilot hole. It is preferable that the external terminal is electrically connected through a via wiring.
- the wiring conductor is formed so as to correspond to the external terminal after the semiconductor chip is embedded and the semiconductor chip is contracted, and the external conductor is formed through the pilot hole. It is preferable that the terminal is directly connected.
- the semiconductor chip preferably has a thickness of 50 ⁇ m or less.
- the semiconductor chip is mounted on a support plate, and the insulating layer is formed on the support plate including the semiconductor chip to embed the semiconductor chip.
- the support plate is preferably a metal plate.
- the thickness of the semiconductor chip is thinner than the thickness of the support plate.
- the insulating layer is preferably made of a resin.
- the resin is preferably a thermosetting resin.
- the semiconductor chip is preferably a plurality of semiconductor chips.
- a thermal expansion coefficient of the support plate is larger than a thermal expansion coefficient of the semiconductor chip.
- the thermal expansion coefficient of the insulating layer is preferably larger than the thermal expansion coefficient of the semiconductor chip.
- the semiconductor in a method of manufacturing a semiconductor device in which a semiconductor chip having an external terminal is embedded in an insulating layer and a wiring conductor is formed on the insulating layer, the semiconductor is included in the insulating layer.
- the method includes a step of forming the wiring conductor corrected to correspond to the terminal.
- the semiconductor chip after forming the pilot hole, may correspond to the contracted external terminal on the insulating layer including the pilot hole and the external terminal. It is preferable to include a step of forming the corrected wiring conductor.
- a step of mounting the semiconductor chip on a support plate, and after mounting the semiconductor chip, on the support plate including the semiconductor chip it is preferable to include the step of embedding the semiconductor chip in the insulating layer by forming the insulating layer.
- the support plate is removed after the wiring conductor is formed.
- the semiconductor chip contracts by forming a pilot hole that communicates with the external terminal at a position corresponding to the external terminal in a contracted state of the semiconductor chip.
- the problem that the position of the external terminal and the pilot hole is shifted can be eliminated, the connection pitch with the semiconductor chip can be narrowed, and a semiconductor chip with a large number of external terminals and a narrow pitch can be built in with high productivity.
- a semiconductor device with a built-in semiconductor chip with high yield and excellent reliability can be obtained.
- the thickness of the semiconductor chip when the insulating layer filling the semiconductor chip is opaque, or in the case of a semiconductor chip thinned to 50 ⁇ m or less, when the semiconductor chip is mounted on the support plate, the thickness of the semiconductor chip is When the thickness of the support plate is thinner, when the insulating layer is a thermosetting resin, when mounting a plurality of semiconductor chips on the support plate, the thermal expansion coefficient of the support plate is larger than the thermal expansion coefficient of the semiconductor chip. In this case, since the semiconductor chip is greatly contracted, the effect of the present invention is particularly great.
- FIG. 10 is a cross-sectional view schematically showing a configuration of a semiconductor device according to Conventional Example 3.
- FIG. 10 is a cross-sectional view schematically showing a configuration of a semiconductor device according to Conventional Example 3.
- a semiconductor chip (1 in FIG. 1) having an external terminal (1a in FIG. 1) is embedded in an insulating layer (4 in FIG. 1), and a wiring is formed on the insulating layer.
- the insulating layer is provided with a pilot hole (in a position corresponding to the external terminal after the semiconductor chip is embedded and the semiconductor chip is contracted). 4a) is formed, and the wiring conductor is electrically connected to the external terminal through the pilot hole.
- a semiconductor chip (1 in FIG. 3C) having an external terminal (1a in FIG. 3C) is an insulating layer (4 in FIG. 3C).
- the semiconductor chip is embedded in the insulating layer (FIG. 3A).
- a pilot hole (4a in FIG. 3B) communicating with the external terminal is formed in the insulating layer at a position corrected to correspond to the external terminal in a contracted state of the semiconductor chip. Step (FIG. 3B) is included.
- FIG. 1 is a cross-sectional view schematically showing a configuration of a semiconductor device according to Example 1 of the present invention.
- FIG. 2 is a cross-sectional view schematically showing a configuration of a modification of the semiconductor device according to the first embodiment of the present invention.
- the semiconductor device is a semiconductor device in which a semiconductor chip 1 having an external terminal 1 a (pad) is embedded in an insulating layer 4 and a wiring conductor 6 is formed on the insulating layer 4. is there.
- a pilot hole 4 a communicating with the external terminal 1 a is formed at a position corresponding to the external terminal 1 a in a state where the semiconductor chip 1 is contracted after the semiconductor chip 1 is embedded.
- the wiring conductor 6 is electrically connected to the external terminal 1a through the pilot hole 4a.
- the semiconductor chip 1 is obtained by dividing a semiconductor on a wafer having semiconductor elements collectively formed on the wafer or the like by dicing or the like. In general, semiconductor elements such as LSI are collectively formed on a wafer. In the semiconductor chip 1, semiconductor elements are formed on a semiconductor substrate, insulating layers and wiring layers are alternately formed on the semiconductor substrate including the semiconductor elements, and the lowermost wiring layer and the semiconductor elements are electrically connected via plugs. The wiring layers are electrically connected via via wiring, and an insulator such as a solder resist is formed on the insulating layer including the uppermost wiring layer. A pilot hole leading to the portion is formed, and the external terminal 1a is formed on the uppermost wiring layer exposed from the pilot hole.
- the external terminal 1a is a terminal for electrically connecting a semiconductor element built around the chip surface and the outside, and is also called an LSI pad or the like.
- the external terminal 1a is connected to any one of a power source, a ground, a signal, and the like.
- a material mainly containing Al, a material mainly containing Cu, or the like is often used, but the external terminal 1a is not limited thereto.
- the external terminals 1a are generally formed in a lump in a wafer state, but can also be formed after dicing.
- the semiconductor chip 1 is mounted on the support plate 3.
- the semiconductor chip 1 is embedded in the insulating layer 4.
- the semiconductor chip 1 does not receive much compressive stress immediately after being embedded in the insulating layer 4 unlike the dotted line semiconductor chip (the semiconductor chip 2 before shrinkage), but when cooled, like the solid line semiconductor chip 1 Shrinks under compressive stress.
- embedded means that the semiconductor chip 1 is embedded in the insulating layer 4, but when the semiconductor chip 1 is partially embedded in addition to the case where it is completely embedded. For example, a part of the back surface or top surface of the semiconductor chip 1 may be exposed.
- the shrinkage of the semiconductor chip 1 due to compressive stress becomes particularly noticeable when the semiconductor chip 1 is thinned.
- the effect of the present invention (external terminal 1 a and pilot hole 4 a (Effect of eliminating the positional deviation) is particularly large. That is, when the semiconductor chip 1 is thin, the stress per unit cross-sectional area increases, so that the shrinkage of the semiconductor chip 1 increases, and the shrinkage of the semiconductor chip 1 is accompanied by the pilot hole 4a (via wiring 5 or wiring conductor 6). ) Is increased, and according to the first embodiment, the pilot hole 4a is formed at a position corresponding to the external terminal 1a in a state in which the semiconductor chip 1 is contracted.
- the thickness of the thinned semiconductor chip 1 can be 50 ⁇ m or less, preferably 30 ⁇ m or less, more preferably 10 ⁇ m or less.
- the wafer is generally thinned by polishing the back surface (substrate side surface) of the wafer before dicing the wafer, but may be thinned after dicing. .
- the effect of the present invention is particularly great.
- the shrinkage of the semiconductor chip 1 causes a problem that the semiconductor chip 1 is shrunk due to the stress from the surrounding material including the support plate 3.
- the compressive stress applied per chip cross-sectional area is mainly caused by the support plate 3 made of metal or the like.
- the thickness of the support plate 3 increases as the thickness of the support plate 3 increases, and the thickness of the semiconductor chip 1 increases as the thickness of the semiconductor chip 1 decreases, and the shrinkage of the semiconductor chip 1 increases.
- the effect of the present invention is further great.
- the effect of the present invention is great when the thickness of the semiconductor chip 1 is smaller than one fifth, and even one tenth of the thickness of the support plate 3.
- FIG. 1 shows an example in which one semiconductor chip 1 is mounted on the semiconductor chip 1, but two or more semiconductor chips 1 may be mounted.
- a semiconductor device in which two or more semiconductor chips 1 are mounted, it becomes difficult to correct the deviation of all the external terminals 1a due to the contraction of the semiconductor chip 1, and therefore the effect of the present invention (the external terminals 1a and the bottom)
- the effect of eliminating the positional deviation of the hole 4a) is particularly large.
- “Mounting two or more” includes a case where two or more semiconductor chips 1 are included in one semiconductor device, but one semiconductor chip 1 is included in each semiconductor device.
- the case where a plurality of semiconductor devices are included as a plate-like body, such as a plate-like body in a manufacturing process before the semiconductor device (semiconductor package) is separated, is included.
- the semiconductor chip 1 is fixed to the support plate 3 using, for example, an adhesive film such as a die attachment film or a chip bonding film, or a silver paste. Further, the wafer (silicon) and the support plate 3 (metal) can be directly brought into contact with each other, and a bond can be generated between the silicon and the metal.
- an adhesive film such as a die attachment film or a chip bonding film, or a silver paste.
- the wafer (silicon) and the support plate 3 (metal) can be directly brought into contact with each other, and a bond can be generated between the silicon and the metal.
- the effect of the present invention is maximized when the wafer is directly brought into contact with the support plate to cause bonding between silicon and metal.
- the semiconductor chip 1 is arranged in advance on the support plate 3.
- the insulating layer 4 prepared in advance is arranged.
- semiconductor chips are arranged with the active surface facing downward is also included.
- the case where a plurality of semiconductor chips 1 are arranged on the support plate 3 is particularly effective, and is particularly effective in the manufacture of a semiconductor device including a large support plate 3 in the middle of manufacture on which a large number of semiconductor chips 1 are mounted.
- the support plate 3 for example, a metal plate, a ceramic plate, a resin plate or the like can be used.
- the support plate 3 may be a wiring board made of an insulating material including a wiring layer. As a result, a conductive line can be formed on both sides of the support plate 3.
- the support plate 1 is made of metal or the like, the effect of the present invention (an effect of eliminating the positional deviation between the external terminal 1a and the prepared hole 4a) is great.
- metal plates include copper plates, aluminum plates, SUS plates, and alloy plates such as 42 alloy.
- the thickness of the support plate 3 is often thicker than the thickness of the insulating layer 4 that embeds the semiconductor chip 1, the degree to which the semiconductor chip 1 is compressed on the insulating layer 4 (for example, a resin material) is also increased from this point.
- the effect of the present invention (the effect of eliminating the positional deviation between the external terminal 1a and the prepared hole 4a) is great.
- the support plate 3 is illustrated in FIG. 1, this is not an essential requirement of the present invention.
- a metal such as copper or aluminum, or a glass-reinforced resin material used as a material constituting the support plate 3 has a larger elastic modulus than that of an insulating layer (for example, a resin material).
- an insulating layer for example, a resin material.
- the insulating layer 4 is formed on the support plate 3 including the semiconductor chip 1, and a pilot hole 4 a is formed at a position corresponding to the external terminal 1 a after the semiconductor chip 1 is embedded and the semiconductor chip 1 is contracted. ing.
- the insulating layer 4 functions to embed the semiconductor chip 1 and can use either an organic material or an inorganic material. As the elastic modulus of these materials is larger and the thermal expansion coefficient is larger, the compressive stress applied to the semiconductor chip 1 becomes larger, and the effect of the present invention becomes important.
- a resin material is suitable, and either a non-photosensitive resin or a photosensitive resin can be used.
- the resin material includes both a thermosetting resin and a thermoplastic resin, but the effect of the present invention is particularly great when a thermoplastic resin that undergoes curing shrinkage is used.
- the resin material may contain an inorganic filler such as a silica filler or an organic filler.
- thermosetting resin When a thermosetting resin is used for the insulating layer 4, the semiconductor chip 1 can be easily embedded.
- examples of such a thermosetting resin include an epoxy resin and a polyimide resin.
- thermosetting resin When a thermosetting resin is used as the insulating layer 4, the semiconductor chip 1 is embedded in an uncured or semi-cured state of the thermosetting resin, and then the heat-cured resin subjected to heat treatment or the like is completely cured. A method is mentioned.
- thermoplastic resin when a thermoplastic resin is used for the insulating layer 4, the semiconductor chip 1 can be embedded by softening the thermoplastic resin in a heated state. In the formation of the insulating layer 4, a heating process is performed.
- the thermal expansion coefficient is different between the metal support plate 3 and the insulating layer 4 made of resin, and a thermosetting resin is used as the insulating layer 4.
- a thermosetting resin is used as the insulating layer 4.
- curing shrinkage occurs in the insulating layer 4, so that even if manufactured through a heating process or the like without applying stress, the thermal expansion coefficient between the semiconductor chip 1 and the support plate 3 or the insulating layer 4 after thermal curing Due to the difference, a compressive stress acts on the semiconductor chip 1 and the semiconductor chip 1 is compressed.
- the position of the external terminal 1a of the semiconductor chip 1 changes, so that the effect of the present invention (the positions of the external terminal 1a and the pilot hole 4a). The effect of eliminating the deviation) is particularly large.
- the pilot hole 4a can be formed by laser beam irradiation or the like, or can be formed by a drill.
- the pilot hole 4a can be formed by an exposure / development process.
- the semiconductor chip is caused by stress generated by contraction of the support plate 303 made of a resin material, metal, or the like that supports the semiconductor chip 301 having a large thermal expansion coefficient. Since 301 contracts, a displacement occurs between the position of the external terminal 301a and the position of the pilot hole 304a (via wiring 305 or wiring conductor 306), resulting in poor connection and poor reliability.
- the semiconductor device according to the first embodiment corrects the formation position of the pilot hole 4a (via wiring 5 or wiring conductor 6) in consideration of chip shrinkage and the like.
- the positions of 1a and prepared holes 4a (via wiring 5 or wiring conductor 6) can be aligned with high accuracy.
- the via wiring 5 is a wiring made of a conductive material embedded in the prepared hole 4 a on the external terminal 1 a of the semiconductor chip 1.
- the via wiring 5 can be formed by a method of printing a conductive paste (for example, a metal paste) or a metal powder.
- the via wiring 5 may be integrated with the wiring conductor 6.
- the via wiring 5 may be filled in the prepared hole 4a, but may not be formed and filled with a predetermined thickness on the side wall of the prepared hole 4a or the surface of the external terminal 1a.
- the wiring conductor 6 is formed in a predetermined shape on the insulating layer 4 including the via wiring 5.
- the wiring conductor 6 is electrically connected to the corresponding external terminal 1a through the pilot hole 4a.
- the wiring conductor 6 is electrically connected to the external terminal 1a via a via wiring 5 (conductor) embedded in the prepared hole 4a.
- the wiring conductor 6 and the via wiring 5 may be integrated, and the wiring conductor 6 may be directly connected to the external terminal 1a. Further, the wiring conductor 6 may be a single layer or a plurality of layers.
- the wiring conductor 6 is shown as one layer in order to make this easy to understand.
- the wiring conductor 6 is not limited to one layer, and may have a multilayer wiring structure as shown in FIG. When the wiring conductors 6 and 9 extend over a plurality of layers as shown in FIG. 2, the wiring conductors 6 and 9 are connected to each other by via wirings 8.
- the wiring conductor 6 forms plating (metal) on the via wiring 5 and the insulating layer 4 exposed from the voids of the predetermined pattern of the plating resist, Then, it can form by peeling a plating resist.
- the plating resist either a varnish resist layer or a film-like resist can be used.
- a negative photoresist whose solubility in a developer is lowered by exposure can be used.
- a positive type photoresist whose solubility is increased may be used.
- the light source used in the exposure can be a light source such as a halogen lamp, but may be a laser light source or the like.
- the seed layer is formed before the plating resist is formed, and the seed layer is removed after the plating resist is removed.
- the seed layer may be formed by sputtering or the like, or may be formed by electroless plating or the like.
- the wiring conductor 6 can also be formed by a method of printing a metal paste or metal powder.
- the insulating layer 7 can have the same form as the insulating layer 4.
- the pilot hole 7a formed in the insulating layer 7 so as to communicate with the wiring conductor 6 can have the same form as the pilot hole 4a.
- the via wiring 8 embedded in the pilot hole 7 a on the wiring conductor 6 can have the same form as the via wiring 5.
- the wiring conductor 9 formed on the insulating layer 7 including the via wiring 5 can have the same form as the wiring conductor 6.
- the wiring conductor 9 can be formed integrally with the via wiring 8.
- An insulating layer 10 made of a solder resist or the like may be formed on the insulating layer 7 including the uppermost wiring conductor 9.
- the prepared hole 10a formed in the insulating layer 10 so as to communicate with the wiring conductor 9 can have the same form as the prepared hole 4a.
- the electrode pad 11 embedded in the prepared hole 10 a on the wiring conductor 9 can be formed in the same form as the via wiring 5. Solder is used for the solder bumps 12 formed on the electrode pads 11.
- FIG. 2 is a manufacturing method of a modified example (see FIG. 2) of the semiconductor device according to the first embodiment of the present invention.
- 3 and 4 are process cross-sectional views schematically showing a manufacturing method of a modification of the semiconductor device according to the first embodiment of the present invention.
- a thinned and separated semiconductor chip (corresponding to the semiconductor chip 2 before shrinkage) is mounted on the support plate 3 with the external terminals 1a facing upward (opposite side of the support plate 3 side), An insulating layer 4 is formed on the support plate 3 including the semiconductor chip 2, and the semiconductor chip 2 is embedded in the insulating layer 4 (step A1; see FIG. 3A).
- a 100 mm square copper plate (thickness 0.5 mm) can be used.
- the semiconductor chip 2 an LSI chip having a chip size of 8 mm, a chip thickness of 50 ⁇ m, a pad pitch of 80 ⁇ m, and a pad size of 30 ⁇ m ⁇ can be used, and a plurality of semiconductor chips 2 can be mounted at a pitch of 30 mm.
- a die bonding tape double-sided tape
- thermosetting epoxy resin film (thickness: 90 ⁇ m, opaque) is laminated, the semiconductor chip 2 is embedded in the insulating layer 4, and a laser position around the semiconductor chip 2. It can be formed by removing the resin of the alignment marker part and curing the thermosetting epoxy resin film.
- a pilot hole 4a communicating with the external terminal 1a is formed in the insulating layer 4 at a position corrected so as to correspond to the external terminal 1a in a contracted state of the semiconductor chip 1 (step A2; see FIG. 3B). .
- the pilot hole 4a can be formed using a laser or the like.
- the deviation value of the position of the external terminal 1a due to the contraction of the semiconductor chip 1 is incorporated into the laser processing data as a correction value to form the pilot hole 4a.
- the size of the pilot hole 4a can be 20 ⁇ m ⁇ .
- the via wiring 5 (conductor) is embedded in the pilot hole 4a, and the wiring conductor 6 is formed on the insulating layer 4 including the via wiring 5 (step A3; see FIG. 3C).
- the via wiring 5 and the wiring conductor 6 can be formed by forming plating or the like using a plating resist.
- the plating resist can be formed by exposing and developing using an exposure mask designed by taking the position shift of the external terminal 1a accompanying the contraction of the semiconductor chip 1 as a correction value.
- the via wiring 5 and the wiring conductor 6 can be produced.
- the via wiring 5 and the wiring conductor 6 can be formed by a semi-additive method by forming a pattern on a plating resist applied using this exposure mask using electroless plating after desmearing as a seed layer. Observing at the stage after step A3, the via wiring 5 and the wiring conductor 6 produced were also formed corresponding to the prepared holes 4a.
- an insulating layer 7 is formed on the insulating layer 4 including the wiring conductor 6 (step A4; see FIG. 3D).
- a pilot hole 7 a communicating with the wiring conductor 6 is formed in the insulating layer 7, a via wiring 8 (conductor) is embedded in the pilot hole 7 a, and a wiring conductor 9 is formed on the insulating layer 7 including the via wiring 8 ( Step A5; see FIG. 4 (A)).
- an insulating layer 10 is formed on the insulating layer 7 including the wiring conductor 9, a pilot hole 10a communicating with the wiring conductor 9 is formed in the insulating layer 10, and an electrode pad 11 (conductor) is embedded in the pilot hole 10a (see FIG. Step A6; see FIG. 4B).
- solder bumps 12 for external connection are formed on the electrode pads 11 (step A7; see FIG. 4C).
- the support plate 3 and 4 show the method for manufacturing the semiconductor device having the support plate 3, the support plate 3 is removed after the steps after step A3 (see FIG. 3C). May be.
- the support plate 3 is removed after step A3, only the insulating layer 4, the via wiring 5, and the wiring conductor 6 incorporating the semiconductor chip 1 are provided.
- the removal of the support plate 3 means that the support plate 3 is removed.
- a semiconductor device is manufactured without taking the position shift of the external terminal 301a due to the shrinkage of the semiconductor chip 301 as a correction value for laser processing data and mask design.
- the bottom of the pilot hole 304a after laser processing was observed, there was a place where only a part of the external terminal 301a was visible at the bottom of the pilot hole 304a and a part where the external terminal 301a was not visible at the bottom of the pilot hole 304a.
- the via wiring 305 and the wiring conductor 306 after forming the via wiring 305 and the wiring conductor 306, the positional relationship among the external terminal 301a, the pilot hole 304a, the via wiring 305, and the wiring conductor 306 was observed by an X-ray transmission device. Although the wiring conductors 306 are in good agreement, a deviation between the external terminals 301a and the prepared holes 304a, which may be caused by the shrinkage of the semiconductor chip 301, was observed.
- the semiconductor chip 1 with a narrow pitch can be embedded, and the external terminal The connection between 1a and via wiring 5 (or wiring conductor 6) becomes strong, and a semiconductor device having excellent reliability can be obtained. Even if the semiconductor chip 1 has the external terminals 1a with a narrow pitch, it can be reliably connected to the via wiring 5 (or the wiring conductor 6). In addition, since the deviation between the external terminal 1a and the prepared hole 4a (via wiring 5 or wiring conductor 6) can be reduced, a semiconductor device can be manufactured with a high yield. Since the connection between 1a and the via wiring 5 (or the wiring conductor 6) is good, a highly reliable semiconductor device in which no defect occurs in a temperature cycle test or the like can be obtained.
- a semiconductor device in which a semiconductor chip having a plurality of external terminals used in a mobile phone, an electric device or the like is incorporated in a substrate.
Landscapes
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
Description
本発明は、日本国特許出願:特願2009-198268号(2009年8月28日出願)の優先権主張に基づくものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
1a、301a 外部端子(パッド)
2、302 収縮前の半導体チップ
3、303 支持板
4、7、10、304 絶縁層
4a、7a、10a、304a 下穴(ヴィア)
5、8、305 ヴィア配線
6、9、306 配線導体
11 電極パッド
12 はんだバンプ
101 金属放熱板
102 金属ペースト
103 ICチップ
104a、104b、104c 絶縁層樹脂層
107 配線導体(めっき)
108 BGA実装パッド
109 BGAはんだバンプ
131 IC側実装用パッド
220 ICチップ
222 ソルダーレジスト
223 位置決めマーク
224 パッド
230 コア基板
231 位置決めマーク
232 凹部
234 接着材料
236 無電解めっき膜
237 電解めっき膜
238 トランジション層
250、251 層間樹脂絶縁層
258、259 導体回路
260、261 バイアホール
270 ソルダーレジスト層
271 開口
272 ニッケルめっき層
274 金めっき層
276 はんだバンプ
Claims (17)
- 外部端子を有する半導体チップが絶縁層中に埋め込まれるとともに、前記絶縁層上に配線導体が形成された半導体装置において、
前記絶縁層には、前記半導体チップを埋め込んだ後であって前記半導体チップが収縮した状態の前記外部端子と対応する位置に下穴が形成され、
前記配線導体は、前記下穴を通じて前記外部端子と電気的に接続されていることを特徴とする半導体装置。 - 前記配線導体は、前記半導体チップを埋め込んだ後であって前記半導体チップが収縮した状態の前記外部端子と対応するように形成されるとともに、前記下穴に埋め込まれたヴィア配線を介して前記外部端子と電気的に接続されていることを特徴とする請求項1記載の半導体装置。
- 前記配線導体は、前記半導体チップを埋め込んだ後であって前記半導体チップが収縮した状態の前記外部端子と対応するように形成されるとともに、前記下穴を通じて前記外部端子と直接接続されていることを特徴とする請求項1記載の半導体装置。
- 前記半導体チップの厚さは、50μm以下であることを特徴とする請求項1乃至3のいずれか一に記載の半導体装置。
- 前記半導体チップは、支持板上に搭載され、
前記絶縁層は、前記半導体チップを含む前記支持板上に形成されることで前記半導体チップを埋め込んでいることを特徴とする請求項1乃至4のいずれか一に記載の半導体装置。 - 前記支持板は、金属板であることを特徴とする請求項5記載の半導体装置。
- 前記半導体チップの厚さは、前記支持板の厚さよりも薄いことを特徴とする請求項5又は6記載の半導体装置。
- 前記絶縁層は、樹脂よりなることを特徴とする請求項1乃至7のいずれか一に記載の半導体装置。
- 前記樹脂は、熱硬化性樹脂であることを特徴とする請求項8記載の半導体装置。
- 前記半導体チップは、複数個の半導体チップであることを特徴とする請求項1乃至9のいずれか一に記載の半導体装置。
- 前記支持板の熱膨張係数は、前記半導体チップの熱膨張係数よりも大きいことを特徴とする請求項5乃至10のいずれか一に記載の半導体装置。
- 前記絶縁層の熱膨張係数は、前記半導体チップの熱膨張係数よりも大きいことを特徴とする請求項1乃至11のいずれか一に記載の半導体装置。
- 外部端子を有する半導体チップが絶縁層中に埋め込まれるとともに、前記絶縁層上に配線導体が形成された半導体装置の製造方法において、
前記絶縁層中に前記半導体チップを埋め込んだ後、前記絶縁層における前記半導体チップが収縮した状態の前記外部端子と対応するように補正された位置に、前記外部端子に通ずる下穴を形成する工程を含むことを特徴とする半導体装置の製造方法。 - 前記下穴を形成した後、前記下穴にヴィア配線を埋め込む工程と、
前記ヴィア配線を含む前記絶縁層上に、前記半導体チップが収縮した状態の前記外部端子と対応するように補正された前記配線導体を形成する工程を含むことを特徴とする請求項13記載の半導体装置の製造方法。 - 前記下穴を形成した後、前記下穴及び前記外部端子を含む前記絶縁層上に、前記半導体チップが収縮した状態の前記外部端子と対応するように補正された前記配線導体を形成する工程を含むことを特徴とする請求項13記載の半導体装置の製造方法。
- 前記下穴を形成する前において、
支持板上に前記半導体チップを搭載する工程と、
前記半導体チップを搭載した後、前記半導体チップを含む前記支持板上に前記絶縁層を形成することで前記絶縁層中に前記半導体チップを埋め込む工程と、
を含むことを特徴とする請求項13乃至15のいずれか一に記載の半導体装置の製造方法。 - 前記配線導体を形成した後、前記支持板を除去することを特徴とする請求項14乃至16のいずれか一に記載の半導体装置の製造方法。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/392,714 US20120153501A1 (en) | 2009-08-28 | 2010-08-27 | Semiconductor device and manufacturing method thereof |
| JP2011528862A JPWO2011024939A1 (ja) | 2009-08-28 | 2010-08-27 | 半導体装置およびその製造方法 |
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| JP2009198268 | 2009-08-28 | ||
| JP2009-198268 | 2009-08-28 |
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| JP2017224787A (ja) * | 2016-06-17 | 2017-12-21 | 株式会社ジェイデバイス | 半導体パッケージの製造方法 |
| KR20180016602A (ko) * | 2015-08-31 | 2018-02-14 | 아이신에이더블류 가부시키가이샤 | 반도체 장치, 칩 모듈 및 반도체 모듈 |
| KR20190052150A (ko) * | 2016-09-30 | 2019-05-15 | 상하이 마이크로 일렉트로닉스 이큅먼트(그룹) 컴퍼니 리미티드 | 반도체를 위한 재배선 방법 |
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| JP5929722B2 (ja) * | 2011-11-30 | 2016-06-08 | Tdk株式会社 | 端子構造、プリント配線板、モジュール基板、電子デバイス及び端子構造の製造方法 |
| US20140353019A1 (en) * | 2013-05-30 | 2014-12-04 | Deepak ARORA | Formation of dielectric with smooth surface |
| US9474162B2 (en) * | 2014-01-10 | 2016-10-18 | Freescale Semiocnductor, Inc. | Circuit substrate and method of manufacturing same |
| US9609751B2 (en) * | 2014-04-11 | 2017-03-28 | Qualcomm Incorporated | Package substrate comprising surface interconnect and cavity comprising electroless fill |
| EP3709777A1 (en) | 2019-03-11 | 2020-09-16 | AT & S Austria Technologie & Systemtechnik Aktiengesellschaft | Solder-free component carrier connection using an elastic element, and method |
| US11296030B2 (en) * | 2019-04-29 | 2022-04-05 | Advanced Semiconductor Engineering, Inc. | Embedded component package structure and manufacturing method thereof |
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| US20120153501A1 (en) | 2012-06-21 |
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