WO2006057360A1 - 半導体装置及びその製造方法、配線基板及びその製造方法、半導体パッケージ並びに電子機器 - Google Patents
半導体装置及びその製造方法、配線基板及びその製造方法、半導体パッケージ並びに電子機器 Download PDFInfo
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- WO2006057360A1 WO2006057360A1 PCT/JP2005/021729 JP2005021729W WO2006057360A1 WO 2006057360 A1 WO2006057360 A1 WO 2006057360A1 JP 2005021729 W JP2005021729 W JP 2005021729W WO 2006057360 A1 WO2006057360 A1 WO 2006057360A1
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- metal layer
- wiring board
- barrier metal
- semiconductor device
- layer
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0271—Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
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- H05K2201/0212—Resin particles
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/244—Finish plating of conductors, especially of copper conductors, e.g. for pads or lands
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- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a semiconductor device connected to a wiring board by solder bumps and a method for manufacturing the same
- the present invention relates to a wiring board to which a semiconductor device is connected by solder bumps, a manufacturing method thereof, a semiconductor package including at least one of the semiconductor device and the wiring board, and an electronic device including the semiconductor package.
- FCB Flip Chip Bonding
- FCB when FCB is performed using solder bumps, solder diffusion is prevented in order to prevent the solder from diffusing into the semiconductor chip and the wiring board and to improve the wettability of the solder bumps to the pads.
- Barrier metal with excellent heat resistance and wettability is provided on the surface of the pad, that is, the surface where the solder bump contacts.
- a method of connecting the to the mounting substrate is widely used.
- cracks are generated in the connection part by the solder bump due to thermal stress and impact at the time of dropping, and this causes a connection failure.
- the breakage tends to occur at the joint interface between the solder bump and the barrier metal. This phenomenon is also a major problem as the bonding interface area decreases due to the miniaturization of solder bumps.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-228455
- Patent Document 2 Japanese Patent Laid-Open No. 11-254185
- FIG. 21 is a cross-sectional view showing a connection portion of the semiconductor package disclosed in Patent Document 1.
- a metal pad 102 formed on the lower surface of a tape 101 on which a semiconductor chip (not shown) is mounted, and a wiring board
- One solder ball 105 is provided for each connection portion between the metal pad 104 formed on the upper surface of 103.
- the solder ball 105 is provided with a sphere 106 having a diameter of 200 to 800 ⁇ m, which is also a heat-resistant silicon rubber, and the entire surface of the sphere 106 is made of Au, Ag, Cu, Pd, Ni or the like.
- An adhesive metal shell 107 having a thickness of 1 to 5 ⁇ m is provided, and a solder metal shell 108 having a thickness of 5 to 20 m is provided on the entire outer surface of the adhesive metal shell 107 with a soldering force. ing.
- a solder paste 109 is provided between the metal pad 102 and the solder ball 105, and between the metal pad 104 and the solder ball 105.
- a resin ball having an extremely small diameter is provided in the solder paste 109.
- a large number of 110 are distributed.
- the stress applied to the connection portion between the tape 101 and the wiring board 102 is absorbed by the deformation of the sphere 106 having heat-resistant silicon rubber force, and the solder ball 105 is cracked. That it can be prevented from being destroyed or destroyed It is listed.
- FIG. 22 is a cross-sectional view showing the flex bonding material disclosed in Patent Document 2.
- Patent Document 2 contains a heat-resistant resin powder 112 having a diameter of 3 to 30 m in a spherical solder 111 having a diameter of 0.05 to 1.5 mm.
- a flex bonding material 113 is disclosed.
- the flex bonding material 113 when an electronic component is connected to a circuit board, the flex bonding material 113 is used in place of the conventional solder Bonole, and the elasticity of the heat-resistant resin powder 112 allows the circuit board and the electronic component to be connected. It is described that it can absorb the thermal stress generated during the period.
- Patent Document 3 Japanese Patent Laid-Open No. 11-54672
- Patent Document 4 Japanese Patent Laid-Open No. 2004-51755
- FIG. 23 is a cross-sectional view showing the electronic component disclosed in Patent Document 3.
- Patent Document 3 discloses a technique for forming a terminal to which a solder bump is connected using conductive grease. That is, the electronic component 121 is provided with a sub-substrate 122, and an electrode 123 is formed on the upper surface of the sub-substrate 122.
- a flip chip 125 is connected to the electrode 123 via a bump 124, and the bump 124 is sealed with a band 126.
- a through hole 127 is formed in a part of the sub-substrate 122 immediately below the electrode 123, and a conductive resin layer 128 is provided inside the through hole 127.
- a metal plating layer 129 is provided on the lower surface of the conductive resin layer 128, and solder bumps 130 are connected to the metal plating layer 129.
- the solder bumps 130 are for mounting the sub board 122 on a main board (not shown).
- the conductive substrate 128 is interposed between the electrode 123 and the solder bump 130 so that when the sub-substrate 122 is mounted on the main substrate and subjected to a heat cycle, the sub-substrate 122 is provided. It is described that the displacement of the solder bump 130 can be prevented because the displacement due to the thermal stress generated between the solder bump 130 and the main substrate can be absorbed by the elastic deformation of the conductive resin layer 128.
- FIG. 24 is a cross-sectional view showing a conductive bump disclosed in Patent Document 4.
- a conductive band provided on the electrode 132 of the electronic component 131 is used.
- No. 133 discloses a technique in which a conductive filler 135 is contained in a matrix composed of rubber-like cocoon resin 134.
- the conductive bump 133 can be elastic and can absorb thermal stress.
- the conductive filler 135 having a whisker surface coated with a metal layer is used, the aspect ratio of the conductive filler 135 is increased and the conductive fillers 135 are easily brought into contact with each other. It is described that the content of the conductive filler 135 can be reduced while the conductivity of the bump 133 is ensured, and the elasticity of the conductive bump 133 can be further improved.
- Patent Document 5 Japanese Patent Laid-Open No. 2002-118199
- Patent Document 6 Japanese Patent Laid-Open No. 2003-124389
- FIG. 25 is a cross-sectional view showing the semiconductor device disclosed in Patent Document 5.
- a post 143 is provided between the semiconductor chip 141 and the solder bump 142, and a low-young metal such as Au or Pd or anisotropic conductive material is provided in the middle part of each post 143.
- a technique for inserting a stress buffer material 144 that also has material strength is disclosed.
- the post 143 is connected to an electrode pad 145 formed on the surface of the semiconductor chip 141, and the periphery of the post 143 is sealed with a sealing resin 146.
- Patent Document 5 describes that the stress applied to the post 143 can be more effectively reduced by providing the post 143 with the stress buffer material 144.
- FIG. 26 is a cross-sectional view showing the semiconductor package disclosed in Patent Document 6.
- an insulating layer 152 is provided on a Si wafer 151
- a resin protrusion 153 is provided on the insulating layer 152
- the resin protrusion 153 is covered to cover the Si wafer.
- a technique for providing a conductive layer 155 so as to be connected to an A lead 154 formed on the surface of 151 is disclosed.
- a post 156 is formed by the resin-made protrusion 153 and the conductive layer 155 covering it, and a solder bump 157 is connected to the upper surface of the post 156.
- a sealing resin layer 158 is provided around the post 156, and a groove 159 is formed in a portion surrounding the post 156 on the upper surface of the sealing resin layer 158.
- Si By providing the post 156 between the wafer 151 and the solder bump 157, the stress applied to the solder bump 157 can be relieved.
- Patent Document 6 by providing the resinous protrusion 153 inside the post 156, the stress applied to the post 156 due to the deformation of the resinous protrusion 153 can be absorbed more effectively.
- the groove 159 in the sealing resin layer 158 it is possible to prevent the sealing resin layer 158 from restraining the deformation of the post 156, so that the stress applied to the post 156 can be absorbed more effectively. Is described.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-228455 (FIG. 3)
- Patent Document 2 Japanese Patent Laid-Open No. 11 254185 (FIG. 1)
- Patent Document 3 Japanese Patent Laid-Open No. 11 54672 (Fig. 1)
- Patent Document 4 Japanese Patent Application Laid-Open No. 2004-51755 (FIG. 7)
- Patent Document 5 Japanese Unexamined Patent Application Publication No. 2002-118199 (Fig. 1)
- Patent Document 6 Japanese Unexamined Patent Publication No. 2003-124389 (Fig. 1)
- Patent Documents 5 and 6 that is, a post is erected on a semiconductor chip, and a solder bump is connected to the upper surface of the post, thereby relieving stress applied to the solder bump.
- the following techniques have the following problems. That is, if the post is erected on the semiconductor chip, the semiconductor package becomes thicker by the post. Also, since it takes time to form the posts, the productivity of the semiconductor package is reduced. Further, as shown in Patent Document 5, when a stress buffer material is interposed in the middle part of the post, if the stress buffer material is made of metal, the stress relaxation function becomes poor, and the stress buffer material is made of an anisotropic conductive film. If formed, the conductivity is lowered.
- the present invention has been made in view of a serious problem, and it is possible to reduce the thickness of a semiconductor package without reducing the strength of solder bumps and without increasing the electrical resistance value at low cost.
- a semiconductor device capable of absorbing stress applied to a solder bump that does not increase the thickness, a manufacturing method thereof, a wiring board and a manufacturing method thereof, and at least one of these semiconductor devices and a wiring board It is an object to provide a semiconductor package and an electronic device equipped with the semiconductor package.
- a semiconductor device includes a semiconductor chip provided with a terminal pad on a surface thereof, and a barrier metal layer provided on the terminal pad. And a plurality of low elastic modulus particles dispersed in the parent phase and made of a material having a lower elastic modulus than that of the parent phase.
- the semiconductor device when the semiconductor device is connected to a wiring board via a solder bump, the low elastic modulus particles are deformed according to the applied stress, thereby absorbing the stress. Can do.
- the semiconductor device according to the present invention preferably has an adhesion strengthening layer provided between the terminal pad and the barrier metal layer and having a conductive material strength.
- an adhesion strengthening layer provided between the terminal pad and the barrier metal layer and having a conductive material strength.
- this adhesion reinforcing layer is formed of the same material as the conductive material forming the matrix phase. .
- the adhesiveness between an adhesion reinforcement layer and a barrier metal layer becomes favorable.
- the semiconductor device according to the present invention preferably has a desorption prevention layer provided on the barrier metal layer and also having a conductive material strength. Thereby, it is possible to prevent the low elastic modulus particles from falling off the noble metal layer.
- the content of the low elastic modulus particles in the barrier metal layer is continuously changed in the film thickness direction of the barrier metal layer, and the lower layer portion and the upper layer portion of the barrier metal layer It is preferable that the content of the low elastic modulus particles is lower than the content of the low elastic modulus particles in an intermediate portion between the lower layer portion and the upper layer portion.
- the adhesion between the terminal pad and the barrier metal layer can be improved, the low elastic modulus particles can be prevented from falling off the noria metal layer, and an interface exists in the barrier metal layer. Shina! Therefore, stress will not concentrate on the interface!
- a wiring board according to the present invention includes a wiring board main body provided with a terminal pad on a surface thereof, and a barrier metal layer provided on the terminal pad, and the noria metal layer force conductive material cover. And a plurality of low elastic modulus particles dispersed in the parent phase and made of a material having a lower elastic modulus than that of the parent phase.
- the low elastic modulus particles are deformed according to the applied stress, thereby absorbing the stress. Can do.
- a semiconductor package according to the present invention includes a wiring board, a semiconductor device mounted on the wiring board, and a solder bump that connects a terminal pad of the semiconductor device to a terminal pad of the wiring board.
- the semiconductor device is the above-described semiconductor device according to the present invention.
- Another semiconductor package according to the present invention includes a wiring board, a semiconductor device mounted on the wiring board, and solder bumps that connect terminal pads of the semiconductor device to terminal pads of the wiring board.
- the wiring board is the above-described wiring board according to the present invention.
- Still another semiconductor package according to the present invention includes a wiring board, a semiconductor device mounted on the wiring board, and a terminal pad of the semiconductor device connected to the terminal pad of the wiring board.
- an intermetallic compound layer formed by alloying the conductive material forming the parent phase and the solder forming the solder bump is formed between the noria metal layer and the solder bump.
- the low elastic modulus particles are preferably dispersed in the intermetallic compound layer. This can prevent the intermetallic compound layer from being broken by cracks when stress is applied.
- An electronic apparatus includes the semiconductor package.
- the electronic device may be a mobile phone, a notebook computer, a desktop computer, a liquid crystal device, an interposer, or a module.
- the terminal pad formed on the surface of the semiconductor wafer is applied with a plating solution containing low-elasticity particles, whereby a mother material having a conductive material strength is obtained.
- a plating solution containing low-elasticity particles whereby a mother material having a conductive material strength is obtained.
- the semiconductor wafer is immersed in one plating bath, and the temperature, pH, or stirring condition of the plating bath is deposited during the deposition of the noria metal layer.
- the content rate of the particles can be made lower than the content rate of the low elastic modulus particles in an intermediate portion between the lower layer portion and the upper layer portion.
- the adhesion between the terminal pad and the barrier metal layer can be improved, it can be prevented from falling off the low elastic modulus particle force S barrier metal layer, and the interface is formed in the barrier metal layer. Therefore, the barrier metal layer can be formed without stress concentration at the interface.
- the step of forming the noria metal layer includes the step of depositing the barrier metal layer with the temperature of the plating bath as a first temperature, and the temperature of the plating bath as the first temperature.
- the noria metal layer is deposited by changing the temperature to a second temperature higher than the first temperature.
- the step of depositing the noria metal layer by changing the temperature of the plating bath from the second temperature to a third temperature lower than the second temperature.
- the terminal pad formed on the surface of the wiring board main body is struck with a plating solution containing low elastic modulus particles, whereby the conductive material strength is increased.
- a plating solution containing low elastic modulus particles whereby the conductive material strength is increased.
- the present invention by dispersing the low elastic modulus particles in the noria metal layer, when the stress is applied to the semiconductor device, the low elastic modulus particles are deformed, so that the strength of the solder bump is reduced. Therefore, it is possible to obtain a semiconductor device capable of absorbing the stress applied to the solder bump without increasing the thickness of the semiconductor package without increasing the electrical resistance value.
- FIG. 1 is a cross-sectional view showing a semiconductor device according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a semiconductor device according to a third embodiment of the present invention.
- FIG. 3 is a cross-sectional view showing a semiconductor device according to a fifth embodiment of the present invention.
- FIG. 4 is a partially enlarged cross-sectional view showing a semiconductor device not provided with a desorption prevention layer.
- FIG. 5 is a partially enlarged cross-sectional view showing the semiconductor device according to the present embodiment.
- FIG. 6 is a cross-sectional view showing a semiconductor device according to a seventh embodiment of the present invention.
- FIG. 7 is a sectional view showing a semiconductor device according to an eighth embodiment of the present invention.
- FIG. 8 is a cross-sectional view showing a wiring board according to a tenth embodiment of the present invention.
- FIG. 9 is a cross-sectional view showing a wiring board according to a twelfth embodiment of the present invention.
- FIG. 10 is a sectional view showing a wiring board according to a thirteenth embodiment of the present invention.
- FIG. 11 is a cross-sectional view showing a wiring board according to a fourteenth embodiment of the present invention.
- FIG. 12 is a cross-sectional view showing a wiring board according to a fifteenth embodiment of the present invention.
- FIG. 13 is a cross-sectional view showing a semiconductor package according to a sixteenth embodiment of the present invention.
- FIG. 14 is a cross-sectional view showing a semiconductor package according to a seventeenth embodiment of the present invention.
- FIG. 15 is a cross-sectional view showing a semiconductor package according to an eighteenth embodiment of the present invention.
- FIG. 16 is a cross-sectional view showing a semiconductor package according to a nineteenth embodiment of the present invention.
- FIG. 17 is a cross-sectional view showing a semiconductor package according to a twentieth embodiment of the present invention.
- FIG. 18 is a cross-sectional view showing a semiconductor package according to a twenty-first embodiment of the present invention.
- FIG. 19 is a sectional view showing a semiconductor package according to a twenty-second embodiment of the present invention.
- FIG. 20 is a sectional view showing a semiconductor package according to a twenty-third embodiment of the present invention.
- FIG. 21 is a cross-sectional view showing a connection portion of a semiconductor package disclosed in Patent Document 1.
- FIG. 22 is a cross-sectional view showing a flex bonding material disclosed in Patent Document 2.
- FIG. 23 is a cross-sectional view showing an electronic component disclosed in Patent Document 3.
- FIG. 24 is a cross-sectional view showing a conductive bump disclosed in Patent Document 4.
- FIG. 25 is a cross-sectional view showing a semiconductor device disclosed in Patent Document 5.
- FIG. 26 is a cross-sectional view showing a semiconductor package disclosed in Patent Document 6.
- FIG. 1 is a cross-sectional view showing a semiconductor device according to this embodiment.
- the semiconductor device 1 according to the present embodiment is provided with an LSI (Large Scale Integrated circuit) chip 2 as a semiconductor chip.
- the LSI chip 2 has an LSI formed on the surface of a silicon chip, and the active surface 2a has, for example, a terminal pad 3 having an aluminum (A1) force.
- a passivation film 4 is provided on the active surface 2 a of the LSI chip 2, and an opening 4 a is formed in the region immediately above the terminal pad 3 in the passivation film 4.
- a composite barrier metal layer 5 is provided on the terminal pad 3, that is, in the opening 4a.
- a plurality of low elastic modulus particles 7 made of, for example, silicone resin are dispersed in a metal matrix 6 having NiP force.
- the shape of the low modulus particle 7 is, for example, spherical.
- the elastic modulus of the low elastic modulus particles 7 is lower than that of the metal matrix 6.
- the film thickness of the composite barrier metal layer 5 is, for example, 1 to 10 m, for example, 3 ⁇ m.
- the diameter of the low elastic modulus particle 7 is, for example, 0.01 to 5 ⁇ m, which is smaller than the film thickness of the composite barrier metal layer 5, for example, 1 ⁇ m.
- the diameter of the low elastic modulus particles 7 is preferably about a fraction of the film thickness of the composite barrier metal layer 5.
- solder bumps are mounted on the composite barrier metal layer 5, and are mounted on a wiring board (not shown) via the solder bumps to constitute a semiconductor package.
- the wiring board is disposed on the active surface 2a side of the LSI chip 2.
- the terminal pad 3 of the LSI chip 2 is connected to the terminal pad of the wiring board through the composite barrier metal layer 5 and the solder bump.
- the composite noria metal layer 5 when a thermal stress is generated between the wiring board on which the semiconductor device 1 is mounted, the composite noria metal layer 5 is deformed and absorbs this thermal stress. This can prevent the solder bumps from being destroyed. Further, since the composite barrier metal layer 5 is provided, it is possible to prevent the solder from diffusing into the terminal pad 3 when the solder bump is melted, and to prevent the solder from diffusing into the LSI chip 2. On the other hand, since the metal matrix 6 of the composite barrier metal layer 5 is formed of NiP having a low electrical resistivity, the electrical resistance between the terminal pad 3 and the solder bump is provided by providing the composite barrier metal layer 5. It can suppress that a value increases.
- the low elastic modulus particles made of silicone resin are dispersed in the barrier metal layer having a strength higher than that of the solder bump, the applied stress is not reduced without reducing the strength of the solder bump. Can be relaxed. Furthermore, according to this embodiment, since the composite barrier metal layer is provided instead of the conventional noria metal layer, the thickness of the semiconductor device does not increase.
- the metal matrix 6 of the composite barrier metal layer 5 is formed of NiP.
- the present invention is not limited to this, and the metal matrix 6 is formed of another metal or alloy. Also good.
- the material of the metal matrix 6 is a material having high electrical conductivity.For example, one kind of metal or one or more kinds of metals selected from the group forces consisting of Ni, Cu, Fe, Co, and Pd are used. It is preferably an alloy containing.
- the composite barrier metal layer 5 can be imparted with high conductivity that could not be obtained with the conventional conductive resin and conductive adhesive, in addition to the function of preventing the solder diffusion to the LSI chip 2. .
- silicone resin is used as the material of the low elastic modulus particle 7
- the present invention is not limited to this, and fluorine resin and acrylic resin are used.
- fluorine resin and acrylic resin are used.
- nitrile resin, urethane resin, etc. may be used, or these resins may be mixed and used, or particles of a plurality of types of resins may be mixed and used.
- shape of the low elastic modulus particle 7 is spherical has been shown, the present invention is not limited to this, and may be a shape other than a spherical shape such as a needle shape, a flat shape, or a cubic shape.
- the shape of the low elastic modulus particle 7 is most preferably spherical. Is also desirable.
- the size of the low elastic modulus particle 7, that is, the diameter of the low elastic modulus particle 7 when it is spherical, and the major axis when it is a non-spherical shape is smaller than the thickness of the composite barrier metal layer 5 Is preferred. This is because if the size of the low elastic modulus particle 7 is smaller than the film thickness of the composite barrier metal layer 5, it is easily taken into the composite barrier metal layer 5.
- the range of 0.01 to 5111 is practically preferable.
- the content of the low elastic modulus particles 7 in the composite barrier metal layer 5 is in a range where the electrical resistivity does not become too large to exhibit the stress relaxation effect! High! It is desirable. Further, when the low elastic modulus particles 7 are dispersed in an island shape and the metal matrix layer 6 has a sponge-like structure, the composite barrier metal layer 5 is more easily deformed by an external force. Desirably, evenly distributed in the mother layer 6!
- the material of the terminal pad 3 is not limited to A1, and may be, for example, copper (Cu).
- the base material of the LSI chip 2 is not limited to Si, and may be other semiconductor materials.
- This embodiment is an embodiment of a method for manufacturing a semiconductor device according to the first embodiment described above.
- an LSI (not shown) is formed on the surface of a silicon wafer, and a terminal pad 3 having A1 force is formed on its active surface.
- a passivation film 4 is formed on the active surface of the silicon wafer.
- an opening 4a is formed immediately above the terminal pad 3 in the nossivation film 4 to expose the terminal pad 3.
- a zincate treatment is performed, and the surface of the terminal pad 3 is coated with zinc (Zn).
- the silicon wafer is immersed in an electroless NiP plating solution containing a silicone resin and a surfactant added.
- the silicone resin is taken into the NiP layer, and from the metal matrix 6 made of NiP and the silicone resin.
- the low elastic modulus particles 7 are composite eutectoid. Thereby, the composite barrier metal layer 5 is formed.
- the composite barrier metal layer 5 by adjusting the content of the silicone resin in the electroless NiP plating solution, adjusting the deposition rate, and selecting the type of the surfactant, the composite barrier metal layer 5 The content of the low elastic modulus particles 7 can be controlled. Also, the composite barrier metal layer 5 film The thickness can be controlled to an arbitrary thickness by adjusting the plating processing time, the plating processing temperature, and the like. In the present embodiment, the film thickness of the composite barrier metal layer 5 is, for example, 1 to 10 m, for example 3 ⁇ m.
- the LSI chip 2 is manufactured by dicing the silicon wafer. As a result, a semiconductor device is manufactured.
- the composite barrier metal layer 5 is formed by the above-described method without increasing the number of steps as compared with the case of forming a barrier metal that does not contain conventional low elastic modulus particles. be able to. Thereby, the composite barrier metal layer 5 can be formed at low cost and high productivity.
- electroless NiP plating may be performed after, for example, Pd catalyst treatment instead of zincate treatment.
- Pd catalyst treatment instead of zincate treatment.
- the material of the base metal 6 of the composite barrier metal layer 5 is not limited to NiP, and may be a metal such as Cu, Pd, Co, or Fe, or an alloy thereof. Furthermore, if a seed layer as a conductive layer is formed on the terminal pad 3 and a region to be plated is selected by a photolithography process, a composite barrier metal layer can be formed by electrolytic plating instead of electroless plating. it can. Even when a composite barrier metal layer is formed by electroplating, it is possible to pray the low modulus particles and the metal matrix together by dispersing the low modulus particles in the plating bath. . In this case, the material of the metal mother layer to be deposited may be any metal or alloy as long as it is a metal that can be electroplated and has a solder diffusion prevention property!
- an Au layer having a thickness of about 0.05 to 0.3 m may be formed on the surface of the composite barrier metal layer 5 by electroless Au plating. This prevents the composite barrier metal layer 5 from being oxidized and improves the wettability of the solder.
- FIG. 2 is a cross-sectional view showing the semiconductor device according to the present embodiment.
- the semiconductor device 11 according to the present embodiment compared with the semiconductor device 1 according to the first embodiment described above (see FIG. 1), The difference is that an adhesion reinforcing layer 12 is provided between the child pad 3 and the composite barrier metal layer 5.
- Other configurations in the present embodiment are the same as those in the first embodiment described above.
- the adhesion reinforcing layer 12 is formed of a material having good adhesion to both the terminal pad 3 and the composite barrier metal layer 5. That is, the material of the adhesion reinforcing layer 12 is preferably a metal such as Ni, Cu, Fe, Co, Pd, Ti, Cr, W, or an alloy mainly composed of these metals, which varies depending on the material of the terminal pad 3. It is. Alternatively, in order to improve the adhesion between the composite barrier metal layer 5, the same material as the material forming the metal matrix 6 of the composite barrier metal layer 5, that is, NiP may be used.
- the film thickness is not so necessary, for example, 0.1 ⁇ m or more. For example, it is 0.5 ⁇ m.
- the adhesion between the terminal pad 3 and the composite barrier metal layer 5 is further improved by providing the adhesion reinforcing layer 12 as compared with the first embodiment described above. be able to.
- sufficient adhesion between the terminal pad 3 and the composite barrier metal layer 5 is ensured by simply forming the composite noria metal layer 5 on the terminal pad 3. Is done.
- the adhesion reinforcing layer 12 is provided and the terminal pads 3 and Improving the adhesion between the composite barrier metal layer 5 is effective for improving the connection reliability.
- the effects other than those described above in the present embodiment are the same as those in the first embodiment described above.
- This embodiment is an embodiment of a method for manufacturing a semiconductor device according to the third embodiment described above.
- the silicon wafer is immersed in an electroless NiP plating bath not containing low elastic modulus particles, and the NiP layer is, for example, 0.1 ⁇ m or more.
- the adhesion reinforcing layer 12 is formed by forming the film to a thickness of 0.5 m.
- the thickness of the adhesion reinforcing layer 12 can be arbitrarily controlled by conditions such as plating time and plating temperature.
- the composite barrier metal layer 5 is formed by the same method as in the second embodiment. Real Configurations and effects other than those described above in the embodiment are the same as those in the second embodiment described above.
- FIG. 3 is a cross-sectional view showing a semiconductor device according to the present embodiment
- FIG. 4 is a partially enlarged cross-sectional view showing a semiconductor device not provided with a desorption prevention layer
- FIG. It is a partially expanded sectional view which shows the semiconductor device which concerns on a form.
- FIG. 3 in the semiconductor device 13 according to the present embodiment, compared to the semiconductor device 1 according to the first embodiment described above (see FIG. 1), on the surface of the composite barrier metal layer 5, The difference is that a desorption preventing layer 14 for preventing the low elastic modulus particles 7 from falling off is provided.
- Other configurations in the present embodiment are the same as those in the first embodiment described above.
- the detachment prevention layer 14 is composed of a conductive layer that does not include the low elastic modulus particles 7, and is selected from, for example, a group force composed of Ni, Cu, Fe, Co, Pd, Ti, Cr, and W 1 For example, it is made of the same material as that of the metal matrix 6 of the composite barrier metal layer 5, that is, NiP. It is preferable that the film thickness of the anti-detachment layer 14 is thicker than the size of the low elastic modulus particles 7. For example, when the size of the low elastic particle 7 is 2 / zm, Thickness is better than 2 ⁇ m.
- a desorption prevention layer 14 (see FIG. 3) is provided on the composite barrier metal layer 5, and in this case, the composite barrier metal is not completely embedded in the metal matrix 6.
- FIG. 5 by providing a desorption preventing layer 14 on the composite barrier metal layer 5, the low elastic modulus particles 7 are embedded by the metal matrix 6 and the desorption preventing layer 14. And the dropout of the low resistivity particles 7 can be prevented.
- the film thickness of the desorption preventing layer 14 is preferably about 1 to 5 m, for example.
- the composite barrier metal layer 5 itself is fundamentally excellent in solderability, unlike the conventional conductive resin and anisotropic conductive film, but the separation preventing layer 14 is provided. As a result, the solder bondability can be further improved.
- the effects other than those described above in the present embodiment are the same as those in the first embodiment described above.
- the present embodiment is an embodiment of a method for manufacturing a semiconductor device according to the fifth embodiment described above.
- the silicon wafer is immersed in an electroless NiP plating bath that does not contain low elastic modulus particles, and the NiP layer is, for example, 2 /
- the thickness of the desorption preventing layer 14 can be arbitrarily controlled according to conditions such as a fitting time and a fitting temperature. Configurations and effects other than those described above in the present embodiment are the same as those in the second embodiment described above.
- FIG. 6 is a cross-sectional view showing the semiconductor device according to this embodiment.
- the present embodiment is an embodiment in which the third embodiment and the fifth embodiment described above are combined. That is, in the semiconductor device 15 according to the present embodiment, the adhesion reinforcing layer 12 is provided between the terminal pad 3 and the composite barrier metal layer 5, and the desorption preventing layer 14 is provided on the composite barrier metal layer 5. It has been. Other configurations in the present embodiment are the same as those in the first embodiment described above.
- the method for manufacturing the semiconductor device 15 according to the present embodiment is a method in which the fourth and sixth embodiments described above are combined. That is, the adhesion reinforcing layer 12, the composite barrier metal layer 5, and the detachment preventing layer 14 are sequentially formed by sequentially immersing the silicon wafer in three electroless NiP plating baths.
- the adhesion between the terminal pad 3 and the composite barrier metal layer 5 can be improved by providing the adhesion reinforcing layer 12.
- a desorption prevention layer 14 is provided. This prevents the low elastic modulus particles 7 from falling off.
- FIG. 7 is a cross-sectional view showing the semiconductor device according to this embodiment.
- the configuration of the semiconductor device 16 according to the present embodiment is similar to the configuration of the semiconductor device 15 according to the seventh embodiment described above, but the adhesion reinforcing layer 12 and the composite barrier metal layer. 5 and the interface between the composite barrier metal layer 5 and the desorption preventing layer 14 are not clear. That is, in this embodiment, a composite barrier metal layer 17 is provided instead of the laminated film composed of the adhesion reinforcing layer 12, the composite barrier metal layer 5 and the desorption prevention layer 14 in the seventh embodiment.
- a low elastic modulus particle poor layer 18, a low elastic modulus particle rich layer 19, and a low elastic modulus particle poor layer 20 are laminated in this order from the terminal pad 3 side.
- the content of the low elastic modulus particle 7 increases as it goes from the low elastic modulus particle poor layer 18 to the low elastic modulus particle rich layer 19 in the low elastic modulus particle poor layer 18, It becomes a substantially constant maximum value in the particle rich layer 19, decreases from the low modulus particle rich layer 19 to the low modulus particle poor layer 20 as it is directed, and decreases again in the low modulus particle poor layer 20 .
- the content of the low elastic modulus particles 7 in the composite barrier metal layer 17 continuously changes along the film thickness direction of the composite barrier metal layer 17, and the lower layer portion of the composite barrier metal layer 17 (low elasticity
- the low elastic modulus particle 7 in the upper layer portion (low modulus particle poor layer 18) and the upper layer portion (low elastic particle pore layer 20) have an intermediate portion (low elastic modulus particle rich layer 19) between the lower layer portion and the upper layer portion. ) Is lower than the content of the low elastic modulus particles 7.
- Other configurations in the present embodiment are the same as those in the first embodiment described above.
- the content of the low elastic modulus particles 7 continuously changes in the composite barrier metal layer 17, and no clear interface is formed in the composite barrier metal layer 17.
- the applied stress is smaller. It is possible to prevent the interface from being concentrated and peeled off. Thereby, the connection reliability of the semiconductor device can be further improved.
- This embodiment is an embodiment of a method for manufacturing a semiconductor device according to the eighth embodiment described above.
- the silicon wafer is immersed in an electroless NiP plating solution containing a silicone resin and a surfactant.
- the silicon wafer is sequentially immersed in three electroless NiP plating baths, and the adhesion reinforcing layer 12, the composite barrier metal layer 5, and the detachment preventing layer 14 are sequentially formed.
- a silicon wafer is immersed in one electroless NiP plating bath, and the film formation conditions are changed during film formation of the composite barrier metal layer 17, so that one electroless NiP plating bath
- a composite barrier metal layer 17 is formed in which the low elastic particle pore layer 18, the low elastic particle rich layer 19 and the low elastic particle pore layer 20 are laminated in this order.
- the content of the low elastic modulus particles 7 in the composite barrier metal layer 17 may be changed by adjusting conditions such as the temperature, pH, or stirring conditions of the Ni P plating solution. Is possible. This is because the amount of the low elastic modulus particles 7 incorporated into the metal matrix 6 (NiP) depends on the precipitation rate of NiP. The precipitation rate of NiP is determined by changing the bath temperature or pH. This is because it can be easily controlled.
- the bath temperature is set to a low value, for example, around 80 ° C., and the low elastic modulus incorporated into the film. Reduce the amount of particles 7.
- the bath temperature is increased to 90 ° C., for example, and the precipitation rate is increased to increase the amount of low elastic particle 7 incorporated.
- the bath temperature is lowered again to around 80 degrees to reduce the precipitation rate.
- the composite barrier metal layer 17 in which the content of the low elastic modulus particles 7 is continuously changed can be formed.
- the above bath temperature is an example, and in practice, the temperature dependency of the content of the low elastic modulus particles varies depending on the amount of the low elastic modulus particles in the plating bath and the type of the surfactant. It is necessary to set conditions each time.
- the content of the low elastic modulus particles 7 in the composite barrier metal layer 17 is changed in three stages, and is shown in the seventh embodiment (adhesion reinforcing layer 12Z composite barrier).
- the present invention is not limited to this, and the content of the low elastic modulus particles 7 in the composite barrier metal layer 17 May be changed in two steps to form a two-layer film of (adhesion-enhancing layer Z composite barrier metal layer) or a film corresponding to a two-layer film of (composite barrier metal layer Z desorption prevention layer).
- the above-mentioned three-layer film formation method should be applied.
- FIG. 8 is a cross-sectional view showing the wiring board according to the present embodiment.
- This embodiment is an embodiment in which a composite barrier metal layer is formed on a wiring board.
- a wiring board body 22 made of, for example, a resin is provided, and the mounting surface 22a of the semiconductor device in the wiring board body 22 is, for example, A terminal pad 23 made of A1 is formed.
- a solder resist 24 is provided on the mounting surface 22 a of the wiring board body 22, and an opening 24 a is formed immediately above the terminal pad 23 in the solder resist 24.
- a composite barrier metal layer 5 is provided on the terminal pad 3, that is, in the opening 24a.
- the configuration of the composite barrier metal layer 5 is the same as that of the composite barrier metal layer 5 in the first embodiment described above.
- solder bumps (not shown) are mounted on the composite barrier metal layer 5, and a semiconductor device is mounted via the solder bumps to constitute a semiconductor package. That is, the semiconductor device is disposed on the mounting surface 22 a side of the wiring board body 22.
- the terminal pads 23 of the wiring board body 22 are connected to the terminal pads of the semiconductor device via the composite barrier metal layer 5 and the solder bumps.
- thermal stress is generated between the wiring board 21 and the semiconductor device due to the difference in thermal expansion coefficient between the wiring board 21 and the semiconductor device.
- the low elastic modulus particles 7 in the composite barrier metal layer 5 are deformed, the entire composite barrier metal layer 5 is deformed and absorbs thermal stress.
- the effect of this embodiment will be described.
- the wiring substrate 21 according to the present embodiment when thermal stress is generated between the semiconductor device mounted on the wiring substrate 21 and the composite circuit board 21, The deformation of the noria metal layer 5 to absorb this thermal stress can prevent the solder bump from being destroyed. Further, the provision of the composite barrier metal layer 5 can prevent the solder from diffusing into the terminal pad 23 when the solder bump is melted, and can prevent the solder from diffusing into the wiring board body 22. .
- the metal matrix 6 of the composite barrier metal layer 5 is formed of NiP having a low electrical resistivity, the electrical resistance value between the terminal pad 23 and the solder bump is reduced by providing the composite barrier metal layer 5. The increase can be suppressed.
- the present embodiment is an embodiment of a method for manufacturing a wiring board according to the tenth embodiment described above.
- a wiring board body 22 made of, for example, a resin is prepared, and necessary wirings are formed.
- terminal pads 23 having A1 force are formed on the semiconductor device mounting surface 22a.
- a solder resist 24 is formed on the mounting surface 22 a of the wiring board body 22.
- an opening 24a is formed immediately above the terminal pad 23 in the solder resist 24 so that the terminal pad 23 is exposed.
- the surface of the terminal pad 23 is subjected to a zincate process, and then an electroless NiP plating is performed to form the composite barrier metal layer 5.
- the method for forming the composite barrier metal layer 5 is the same as in the second embodiment described above. Thereby, the wiring board 22 is manufactured.
- the above-described method is a composite that does not increase the number of steps as compared with the conventional case of forming a barrier metal layer that does not contain low elastic modulus particles.
- a barrier metal layer 5 can be formed.
- the composite barrier metal layer 5 can be formed at low cost and high productivity.
- FIG. 9 is a cross-sectional view showing the wiring board according to the present embodiment.
- the wiring board 26 according to the present embodiment has a terminal pad 23 and a composite barrier metal layer 5 that are different from the wiring board 21 according to the tenth embodiment (see FIG. 8). The difference is that an adhesion reinforcing layer 12 is provided between them.
- the configuration of the adhesion reinforcing layer 12 is the same as that of the adhesion reinforcing layer 12 (see FIG. 2) in the third embodiment described above.
- Other configurations in the present embodiment are the same as those in the tenth embodiment described above. It is like.
- the manufacturing method of the wiring board 26 according to the present embodiment is different from the manufacturing method of the wiring board shown in the eleventh embodiment in that the adhesion reinforcing layer 12 forming method shown in the fourth embodiment is used. It is added.
- the effect of the present embodiment is obtained by adding the effect of the third embodiment described above to the effect of the tenth embodiment described above.
- FIG. 10 is a cross-sectional view showing the wiring board according to the present embodiment.
- the wiring board 27 according to the present embodiment has a desorption prevention layer on the composite barrier metal layer 5 as compared with the wiring board 21 according to the tenth embodiment (see FIG. 8). 14 is provided, but the points are different.
- the configuration of the detachment preventing layer 14 is the same as that of the detachment preventing layer 14 (see FIG. 3) in the fifth embodiment described above.
- Other configurations in the present embodiment are the same as those in the tenth embodiment described above.
- the manufacturing method of the wiring board 27 according to the present embodiment is different from the manufacturing method of the wiring board shown in the eleventh embodiment, in that Is added.
- the effect of the present embodiment is obtained by adding the effect of the fifth embodiment described above to the effect of the tenth embodiment described above.
- FIG. 11 is a cross-sectional view showing the wiring board according to the present embodiment.
- the wiring board 28 according to the present embodiment has a terminal pad 23, a composite barrier metal layer 5, and a wiring board 21 according to the tenth embodiment (see FIG. 8).
- An adhesion strengthening layer 12 is provided between them, and a desorption preventing layer 14 is provided on the composite barrier metal layer 5.
- the configuration of the adhesion reinforcing layer 12 is the same as that of the adhesion reinforcing layer 12 (see FIG. 2) in the above-described third embodiment, and the configuration of the desorption preventing layer 14 is the desorption in the above-described fifth embodiment.
- the manufacturing method of the wiring board 28 according to the present embodiment is the same as the manufacturing method of the wiring board shown in the eleventh embodiment, and the method for forming the adhesion reinforcing layer 12 shown in the fourth embodiment and The method for forming the desorption preventing layer 14 shown in the sixth embodiment is added.
- the effect of this embodiment is the same as that of the above-described tenth embodiment. And the effect of the fifth embodiment is added.
- FIG. 12 is a cross-sectional view showing the wiring board according to the present embodiment.
- the wiring board 29 according to the present embodiment has an adhesion strengthening layer 12, a composite barrier metal layer 5, and a wiring board 28 according to the fourteenth embodiment (see FIG. 11).
- a composite barrier metal layer 17 is provided in place of the laminated film composed of the desorption prevention layer 14, except that the composite barrier metal layer 17 is provided.
- the configuration of the composite barrier metal layer 17 is the same as that of the composite barrier metal layer 17 (see FIG. 7) in the above-described eighth embodiment.
- Other configurations in the present embodiment are the same as those in the tenth embodiment described above.
- the manufacturing method of the wiring board 29 according to the present embodiment is the same as the manufacturing method of the wiring board shown in the eleventh embodiment described above, and the adhesion reinforcing layer 12, the composite barrier metal layer 5, and the detachment preventing layer 14 are used.
- the composite barrier metal layer 17 is formed by the method shown in the ninth embodiment. The effect of this embodiment is obtained by adding the effect of the aforementioned eighth embodiment to the effect of the aforementioned tenth embodiment.
- FIG. 13 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor device 1 according to the first embodiment described above is provided, and the semiconductor device 1 is mounted on the wiring board 32. ing.
- the configuration of the semiconductor device 1 is as described in the first embodiment.
- the wiring board 32 is a conventional wiring board. That is, the wiring board 32 is provided with a wiring board body 22 made of, for example, a resin, and a terminal pad 23 made of, for example, A1 is formed on the surface thereof.
- a solder resist 24 is provided on the mounting surface 22 a of the wiring board body 22, and an opening 24 a is formed immediately above the terminal pad 23 in the solder resist 24.
- a barrier metal layer 33 made of NiP is provided in the opening 24a, that is, on the terminal pad 23.
- solder bumps 34 are provided on the barrier metal layer 33 of the wiring board 32.
- the noria metal layer 33 is connected to the composite barrier metal layer 5 of the semiconductor device 1 via the solder bumps 34. It is connected to the.
- the solder bumps 34 may be formed of, for example, force high temperature SnPb formed of eutectic SnPb, or may be formed of lead-free solder such as SnAg, SnZn, SnAgCu, or Sn Cu.
- the manufacturing method of the semiconductor device 1 is the same as the manufacturing method according to the second embodiment described above. Further, the connection between the noria metal layer 33 of the wiring board 32 and the composite barrier metal layer 5 of the semiconductor device 1 by the solder bumps 34 can be performed using a known solder connection process. Operations and effects in the present embodiment are the same as those in the first embodiment described above.
- FIG. 14 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 36 according to this embodiment has an intermetallic compound layer 37 on the surface of the composite barrier metal layer 5 as compared to the semiconductor package 31 according to the sixteenth embodiment described above.
- the intermetallic compound layer 37 is formed in that the low elastic modulus particles 7 are contained.
- the intermetallic compound layer 37 is formed by alloying NiP forming the metal matrix 6 of the composite barrier metal layer 5 and solder forming the solder bumps 34.
- the manufacturing method of the semiconductor package 36 according to the present embodiment is such that the low elastic modulus particles 7 are contained in the intermetallic compound 37 in a large amount in the manufacturing method of the semiconductor package according to the sixteenth embodiment described above. Increase the size of the low elastic modulus particle 7 in the intermetallic compound 37 Even if the number of particles of low modulus particles 7 incorporated into the same is the same, the volume ratio of the low modulus particles 7 in the intermetallic compound 37 is increased, or the content of the low modulus particles 7 in the electroless NiP plating solution is increased. The number of low elastic modulus particles 7 taken into the intermetallic compound 37 may be increased to increase the number of particles. It can also be realized by omitting the desorption preventing layer 14 or reducing its thickness.
- FIG. 15 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 38 according to the present embodiment is a semiconductor device according to the third embodiment described above as a semiconductor device as compared with the semiconductor package 31 according to the sixteenth embodiment described above. 11 (see FIG. 2), that is, a semiconductor device in which an adhesion reinforcing layer 12 is provided between the terminal pad 3 and the composite barrier metal layer 5 is different.
- Other configurations in the present embodiment are the same as those in the sixteenth embodiment described above.
- the semiconductor package 38 according to the present embodiment can be manufactured by adding the formation process of the adhesion reinforcing layer 12 in the above-described fourth embodiment to the above-described manufacturing method of the sixteenth embodiment. it can.
- the effect of this embodiment is the same as that of the third embodiment described above.
- FIG. 16 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 39 according to the present embodiment is a semiconductor device according to the fifth embodiment described above as a semiconductor device compared to the semiconductor package 31 according to the sixteenth embodiment described above. 13 (see FIG. 3), that is, the semiconductor device in which the desorption prevention layer 14 is provided on the composite barrier metal layer 5 is different.
- Other configurations in the present embodiment are the same as those in the sixteenth embodiment described above.
- the semiconductor package 39 according to the present embodiment is manufactured by adding the formation process of the desorption prevention layer 14 in the above-described sixth embodiment to the manufacturing method in the above-described sixteenth embodiment. be able to. The effect of this embodiment is the same as that of the fifth embodiment described above.
- FIG. 17 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 40 according to the present embodiment is a semiconductor device according to the seventh embodiment described above as a semiconductor device as compared with the semiconductor package 31 according to the sixteenth embodiment described above. 15 (see FIG. 6), that is, a semiconductor device in which an adhesion enhancement layer 12 is provided between the terminal pad 3 and the composite barrier metal layer 5 and a desorption prevention layer 14 is provided on the composite barrier metal layer 5 is provided. Is different. Other configurations in the present embodiment are the same as those in the sixteenth embodiment described above.
- the semiconductor package 40 according to this embodiment is different from the manufacturing method of the sixteenth embodiment described above in the formation process of the adhesion reinforcing layer 12 in the fourth embodiment described above and the sixth embodiment described above. It can be manufactured by adding a step of forming the desorption preventing layer 14 in the form. The effect of this embodiment is the same as that of the seventh embodiment described above.
- FIG. 18 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 41 according to the present embodiment is a semiconductor device according to the eighth embodiment described above as a semiconductor device compared to the semiconductor package 31 according to the sixteenth embodiment described above. 16 (see FIG. 7), that is, instead of the adhesion reinforcing layer 12, the composite barrier metal layer 5 and the desorption preventing layer 14, the content of the low elastic modulus particles 7 is continuously varied in the film thickness direction. The difference is that a semiconductor device having a composite barrier metal layer 17 is provided.
- Other configurations in the present embodiment are the same as those in the sixteenth embodiment described above.
- the semiconductor package 41 according to the present embodiment is different from the manufacturing method of the sixteenth embodiment described above in place of the process of forming the adhesion reinforcing layer 12, the composite barrier metal layer 5, and the desorption preventing layer 14. Further, it can be manufactured by carrying out the step of forming the composite barrier metal layer 17 in the aforementioned ninth embodiment. The effect of this embodiment is the same as that of the aforementioned eighth embodiment.
- FIG. 19 is a cross-sectional view showing a semiconductor package according to the present embodiment.
- the semiconductor package 42 according to this embodiment is compared with the semiconductor package 31 according to the sixteenth embodiment described above.
- the semiconductor device 15 according to the seventh embodiment described above that is, the adhesion reinforcing layer 12 is provided between the terminal pad 3 and the composite barrier metal layer 5, and the composite barrier metal layer 5 is provided.
- a semiconductor device having a desorption prevention layer 14 provided thereon is provided, and the wiring board 28 according to the above-described fourteenth embodiment (see FIG.
- the composite barrier metal layer 5 is provided on at least one terminal pad of the semiconductor device and the wiring board connected via the solder bumps 34.
- a greater stress relaxation effect and shock absorption effect can be obtained. Can do.
- the semiconductor package according to the present invention is not limited to those shown in the sixteenth to twenty-first embodiments described above, and the first, third, fifth, seventh, and eighth embodiments described above.
- Each of the semiconductor devices can be arbitrarily combined with each of the wiring boards according to the tenth, twelfth to fifteenth embodiments.
- a conventional semiconductor device may be mounted on each wiring board according to the tenth, twelfth to fifteenth embodiments. Further, it may be a combination of connecting semiconductor devices or wiring boards.
- FIG. 20 is a cross-sectional view showing the semiconductor package according to the present embodiment.
- the semiconductor package 43 according to the present embodiment has the core balls 44 made of resin in the solder bumps 34 as compared with the semiconductor package 42 according to the twenty-second embodiment described above.
- a solder ball 46 whose surface is covered with a solder layer 45 is provided, and the low elastic modulus particles 7 are also dispersed in the solder paste 47 forming the solder bumps 34.
- Other configurations in the present embodiment are the same as those in the twenty-second embodiment described above.
- the core balls 44 made of resin and the low elastic modulus particles 7 are provided in the solder bumps 34, the strength of the solder bumps 34 themselves is reduced, The deformation of the low elastic modulus particles 7 in the composite barrier metal layer 5 and the core balls 44 and the low elastic modulus particles 7 in the solder bumps 34 are more effectively absorbed by displacement due to thermal stress, drop impact, etc. Can do. Therefore, when the solder bump 34 is relatively large and the strength of the solder bump 34 itself can be secured to some extent, the application reliability of the semiconductor package can be further improved by applying this embodiment. it can.
- the electronic apparatus includes the semiconductor device according to the first, third, fifth, seventh, and eighth embodiments described above, the wiring board according to the tenth, twelfth to fifteenth embodiments, and the first described above.
- the electronic device includes any one of the semiconductor packages according to the sixteenth to twenty-third embodiments.
- the electronic device according to the present embodiment is, for example, a mobile phone, a notebook computer, a desktop computer, a liquid crystal device, an interposer, or a module. According to this embodiment, it is possible to obtain an electronic device having excellent thermal stress relaxation properties and drop impact resistance and high reliability.
- the present invention can be suitably used for electronic devices such as mobile phones, notebook computers, desktop computers, liquid crystal devices, interposers, and modules.
- electronic devices such as mobile phones, notebook computers, desktop computers, liquid crystal devices, interposers, and modules.
- it can be suitably used for a portable electronic device having a high possibility of dropping.
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- Microelectronics & Electronic Packaging (AREA)
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- Wire Bonding (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
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JP2006547877A JP4778444B2 (ja) | 2004-11-25 | 2005-11-25 | 半導体装置及びその製造方法、配線基板及びその製造方法、半導体パッケージ並びに電子機器 |
US11/720,066 US20080001288A1 (en) | 2004-11-25 | 2005-11-25 | Semiconductor Device and Manufacturing Method Thereof, Semiconductor Package, and Electronic Apparatus |
US13/216,118 US20110304029A1 (en) | 2004-11-25 | 2011-08-23 | Semiconductor device and manufacturing method thereof, wiring board and manufacturing method thereof, semiconductor package, and electronic apparatus |
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JP2004-341002 | 2004-11-25 | ||
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US13/216,118 Division US20110304029A1 (en) | 2004-11-25 | 2011-08-23 | Semiconductor device and manufacturing method thereof, wiring board and manufacturing method thereof, semiconductor package, and electronic apparatus |
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US (2) | US20080001288A1 (ja) |
JP (1) | JP4778444B2 (ja) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI475621B (zh) * | 2006-12-13 | 2015-03-01 | Cambridge Silicon Radio Ltd | 晶片安裝技術 |
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KR101009067B1 (ko) * | 2008-10-20 | 2011-01-18 | 삼성전기주식회사 | 솔더 범프를 갖는 반도체 패키지 및 그 제조방법 |
WO2022249500A1 (ja) * | 2021-05-27 | 2022-12-01 | 石原ケミカル株式会社 | アンダーバリアメタルとソルダー層とを含む構造体及び構造体の製造方法 |
JP2022182186A (ja) * | 2021-05-27 | 2022-12-08 | 石原ケミカル株式会社 | アンダーバリアメタルとソルダー層とを含む構造体 |
JP7197933B2 (ja) | 2021-05-27 | 2022-12-28 | 石原ケミカル株式会社 | アンダーバリアメタルとソルダー層とを含む構造体 |
US20230097139A1 (en) * | 2021-09-28 | 2023-03-30 | Tdk Corporation | Electronic component with metal terminal |
US11972902B2 (en) * | 2021-09-28 | 2024-04-30 | Tdk Corporation | Electronic apparatus with a metal terminal having portions of differing elasticity |
Also Published As
Publication number | Publication date |
---|---|
CN100468674C (zh) | 2009-03-11 |
US20110304029A1 (en) | 2011-12-15 |
CN101076884A (zh) | 2007-11-21 |
JP4778444B2 (ja) | 2011-09-21 |
US20080001288A1 (en) | 2008-01-03 |
JPWO2006057360A1 (ja) | 2008-06-05 |
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