WO2006064534A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2006064534A1 WO2006064534A1 PCT/JP2004/018579 JP2004018579W WO2006064534A1 WO 2006064534 A1 WO2006064534 A1 WO 2006064534A1 JP 2004018579 W JP2004018579 W JP 2004018579W WO 2006064534 A1 WO2006064534 A1 WO 2006064534A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solder
- pad
- semiconductor device
- semiconductor chip
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/0132—Binary Alloys
- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/14—Integrated circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/161—Cap
- H01L2924/1615—Shape
- H01L2924/16195—Flat cap [not enclosing an internal cavity]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3463—Solder compositions in relation to features of the printed circuit board or the mounting process
Definitions
- the present invention relates to a semiconductor device, and more particularly to a semiconductor device having an electrical and mechanical connection structure using solder.
- This bonding method is a method in which a connection pad (hereinafter, also simply referred to as a “pad”) provided on the lower surface of the semiconductor chip is in close contact with a pad provided on the upper surface of the package substrate, and heat and pressure are applied for bonding. It is. At this time, ball-shaped solder bumps are formed in advance on the pads of the semiconductor chip and the package substrate. Solder bumps are usually arranged in a grid, and such a structure is called a BGA (Ball Grid Array) structure.
- BGA All Grid Array
- solder used for solder bumps Conventionally, Sn (tin) -Pb (lead) eutectic solder has been used as solder used for solder bumps. In recent years, so-called lead-free solder, which does not contain Pb as a solder alloy, is widely used to suppress the adverse effects on the environment when disposing of electronic parts.
- solder alloys As lead-free solder used for solder bumps, a so-called “Sn—Ag—Cu-based” solder alloy composed of Sn, Ag (silver) and Cu (copper) is widely known. In particular, a solder alloy consisting of Ag: 34 mass%, Cu: 0.5.0-1. 0 mass%, and the balance Sn is generally used. Solder alloys for solder bumps which are excellent in bonding reliability and drop impact resistance (less than 2% by mass) have also been proposed (eg, Patent Document 1 below).
- the volume of the solder bump and the bonding area between the solder bump and the pad inevitably become small, and the strength of the bonding portion is lowered.
- an underfill resin such as epoxy resin. Underfill resin bonds between the semiconductor chip and the package substrate At the same time, it relieves the external stress applied to the solder bump joint.
- electrodes for external connection are formed on the lower surface of the package substrate of the semiconductor device, and solder balls used for mounting on a mounting substrate such as a computer's mother board are provided thereon. It is formed. Then, at the time of mounting, the semiconductor device is mounted on the mounting substrate so that the solder balls are in contact with the connection pads of the mounting substrate, and the semiconductor device is soldered to the mounting substrate by heating (reflowing).
- solder bumps as internal wiring for connecting a semiconductor chip and a package substrate have a melting point higher than that of a solder ball as an external wiring on the lower surface of the package substrate so as not to melt by heating in the mounting process. used. Also, by using a material having a small ratio of the volume at solid time to the volume at melt as the material of the solder bump as the material of the solder bump, even if it is melted by heating at the time of mounting, the gap between the solder bumps is obtained. There is also a technology to prevent short circuit (for example, Patent Document 2 below).
- solder bumps as internal wiring for connecting the semiconductor chip and the package substrate are referred to as “inner bumps”, and solder balls as external wiring for connecting the package substrate to the outside (such as a mother board) It may be called “outer ball”.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-239780
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-207494
- the thermal expansion coefficient of a general silicon semiconductor chip is about 7 ppm / ° C.
- the resin package substrate and mounting substrate are about 20 ppm / ° C.
- the epoxy underfill resin is about 30 ppm / ° C
- solder is about 15 ppm / ° C and they are different. Therefore, internal stress is generated between the semiconductor chip and the package substrate inside the semiconductor device and at the connection portion between the package substrate and the mounting substrate at the time of mounting due to temperature change. The stress is applied to the inner bumps and the outer balls, which causes the disconnection and lowers the connection reliability of the semiconductor device.
- a semiconductor device comprises a semiconductor chip, a package substrate on which the semiconductor chip is mounted, a solder bump for electrically connecting the semiconductor chip and the package substrate, and the semiconductor chip An underfill resin filled between the package substrate and a solder ball electrically connecting the package substrate to the outside, wherein the elastic modulus of the solder bump is lower than the elastic modulus of the solder ball It is.
- the inner bump has a low elastic modulus
- the solder ball since the solder ball has a high elastic modulus, the stress applied from the outside can be held as its own internal stress. Therefore, the solder ball can absorb the stress caused by the difference in the thermal expansion coefficient between the package substrate and the mounting substrate externally connected at the time of mounting, and the stress concentration on the outer peripheral portion of the package substrate is alleviated. Therefore, the disconnection between the package substrate and the mounting substrate can be suppressed. As a result, the connection reliability of the internal wiring of the semiconductor device and the connection reliability with the external wiring at the time of mounting can be improved.
- FIG. 1 is a view showing a structure of a semiconductor device according to an embodiment.
- FIG. 2 is an enlarged cross-sectional view of a connection portion between a semiconductor chip and a BGA substrate in a semiconductor device according to an embodiment.
- FIG. 3 is a view showing a semiconductor device structure at the time of mounting.
- FIG. 4 is a flow chart showing a method of manufacturing a semiconductor device according to the embodiment.
- FIG. 5 is a process diagram for illustrating a method of manufacturing a semiconductor device according to the embodiment.
- FIG. 6 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 7 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 8 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 9 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 10 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 11 is a process diagram for describing a method of manufacturing a semiconductor device according to the embodiment.
- FIG. 12 is a process diagram for illustrating a method of manufacturing a semiconductor device according to the embodiment.
- FIG. 13 is a process diagram for illustrating the method of manufacturing a semiconductor device according to the embodiment.
- FIG. 1 is a view showing a structure of a semiconductor device according to an embodiment of the present invention.
- the semiconductor device 1 has a BGA structure, and the semiconductor chip 10 is mounted on a BGA substrate (package substrate) 20 by a face-down method.
- the semiconductor chip 10 has a plurality of first pads 11 on the lower surface (the integrated circuit surface).
- the BGA substrate 20 has a plurality of second pads 21 as internal electrodes on the top surface (mounting surface of semiconductor 1 chip).
- the first pad 11 and the second pad 21 are both electrically and mechanically connected to the solder bump (inner bump) 31. Thereby, the semiconductor chip 10 is electrically connected to the BGA substrate 20 and mechanically fixed.
- under-fill resin 32 such as epoxy resin is filled in the gap between the semiconductor chip 10 and the BGA substrate 20.
- the underfill resin 32 functions to adhere between the semiconductor chip 10 and the BGA substrate 20 and to relieve external stress, which is a force at the junction between the first pad 11 and the second pad 21 and the inner bump 31. Do.
- FIG. 2 shows an enlarged view of a connection portion between the semiconductor chip 10 and the BGA substrate 20.
- a passivation film 12 is formed on the lower surface of the semiconductor chip 10, and a structure in which the surface of the first pad 11 is exposed in the opening provided in the passivation film 12. It has become.
- the first pad 11 of the semiconductor chip 10 is formed of aluminum. Since aluminum is not easily wetted by solder, an under bump metal (UBM) 13 (first metal film) with good wettability to the solder is provided on the surface of the first pad 11 as shown in FIG. Connect to the first pad 11 via. Thereby, the connection reliability between the first pad 11 and the inner bump 31 is improved.
- UBM13 for example, a three-layered structure of Ti (Titan), Cu and Ni is known.
- solder resist 23 second metal film
- solder resist 23 second metal film
- the second pad 21 is formed of copper. Copper has relatively good wettability with the solder, but the surface of the second pad 21 is coated (plated) 24 with a predetermined metal in order to prevent the "corrosion phenomenon".
- the "pecing phenomenon” is a phenomenon in which, when Sn or Ag is in contact with another metal in a dissolved state, the other metal is corroded. If the electrode is corroded by the solder due to this phenomenon, it will cause disconnection. In the conventional Sn-Pb eutectic solder, Pb plays the role of a barrier, so that the electrode "eating phenomenon” hardly occurred force S, and in the case of lead-free solder, the Pb is not contained. The phenomenon is noticeable. As the coating 24, for example, a two-layered structure of Ni (nickel) and Au (gold) is known.
- the inner bump 31 is not formed directly on the second pad 21 but formed on the second pad 21 via the coating 24, so that the "deterioration phenomenon" is prevented. As a result, the decrease in connection reliability between the second pad 21 and the inner bump 31 is suppressed.
- Outer ball 33 is provided on the lower surface (external connection surface) of BGA substrate 20, a plurality of external electrodes 22 for electrically connecting semiconductor device 1 to the outside are formed.
- the outer ball 33 is used to electrically and mechanically connect the semiconductor device 1 to a mounting board such as a motherboard.
- a stiffener (reinforcement material) 34 is provided on the upper surface of the BGA substrate 20 via an adhesive tape 35.
- the material of the stiffener 34 is made of, for example, copper, which desirably has a coefficient of linear expansion close to that of the BGA substrate 20 so as to suppress generation of stress due to temperature change due to heat generation of the semiconductor chip 10 or the like.
- the adhesive tape 35 is formed of, for example, a highly adhesive epoxy resin.
- a heat spreader 36 is provided on the top of the semiconductor chip 10 for the purpose of improving heat dissipation and protecting the semiconductor chip 10.
- a heat dissipation resin 37 is filled between the heat spreader 36 and the semiconductor chip 10.
- the heat dissipation resin 37 is formed of, for example, silver paste having high thermal conductivity so that the heat spreader 36 and the semiconductor chip 10 are thermally connected.
- Heat spreader 36 is also fixed to stiffener 34 via adhesive tape 38 Be
- the adhesive tape 38 is formed of, for example, a highly adhesive epoxy resin.
- the outer balls 33 are mounted on the mounting substrate 40 by being bonded to the connection pads 41 on the upper surface of the mounting substrate 40. At this time, no underfill resin is provided between the BGA substrate 20 and the mounting substrate 40.
- a solder alloy having a low elastic modulus is used as the inner bump 31 for connecting the semiconductor chip 10 and the BGA substrate 20, and an inner bump is used as the outer ball 33 for external connection.
- the semiconductor chip 10, the BGA substrate 20, the underfill resin 32, the solder (the inner bumps 31 and the outer balls 33), and the mounting substrate 40 to be externally connected are different from one another. It has a thermal expansion coefficient. Therefore, stress is generated at each connection due to temperature change.
- a mechanical connection is made between the semiconductor chip 10 and the BGA substrate 20 by two of an inner bump 31 and an underfill resin 32. Therefore, the stress due to the difference in the thermal expansion coefficient between the semiconductor chip 10 and the BGA substrate 20 is applied to the inner bump 31 so that the stress is not applied.
- the longitudinal expansion due to the difference in the thermal expansion coefficient between the inner bump 31 and the underfill resin 32 Directional stress is also applied. That is, the underfill resin 32 is a force that relieves the lateral stress applied to the inner bump 31. Conversely, the underfill resin 32 is a factor that increases the longitudinal stress.
- the underfill resin 32 has a thermal expansion coefficient larger than that of the inner bump 31 such as epoxy resin
- tensile stress in the longitudinal direction is applied to the inner bump 31.
- the tensile stress is increased particularly in the vicinity of the center of the semiconductor chip 10 due to the “warping” of the semiconductor chip 10 caused by the difference in thermal expansion coefficient between the semiconductor chip 10 and the BGA substrate 20.
- the inner bump 31 is a material having a high elastic modulus, the stress is Since stress can not be buffered, stress concentrates on the connection portion between the inner bump 31 and the semiconductor chip 10 and the connection portion between the inner bump 31 and the BGA substrate 20, and disconnection tends to occur in these portions.
- connection between the inner bump 31 and the semiconductor chip 10 and the BGA substrate 20 is illustrated in FIG.
- a break is likely to occur between the first pad 11 and the UBM 13. That is, the diameter dl of the opening of the passivation film 12 where the first pad 11 is exposed is smaller than the diameter d2 of the opening of the solder resist 23 where the second pad 21 is exposed (ie, between the first pad 11 and the UBM 13 This is because stress is concentrated on the interface between the first pad 11 and the UBM 13 because the area of the bonding surface (interface) is smaller than the area of the bonding surface between the second pad 21 and the coating 24. In other words, since the electrical connection area to the inner bump 31 on the surface of the first pad 11 is smaller than the electrical connection area on the surface of the second pad 21, the electrical connection between the first pad 11 and the inner bump 31 is Connection is likely to break.
- a solder alloy having a low elastic modulus is used as the inner bump 31. Since the inner bump 31 is easily deformed according to the stress due to its low elastic modulus, it can buffer the tensile stress applied to the inner bump 31, and the connection portion between the inner bump 31 and the semiconductor chip 10 and the inner bump 31 and BGA Stress concentration on the connection with substrate 20 is alleviated. Therefore, the disconnection between the semiconductor chip 10 and the BGA substrate 20 can be suppressed, and the connection reliability between the semiconductor chip 10 and the BGA substrate 20 is improved.
- the reason why the exposed area (the size of the first pad 11) of the first pad 11 is reduced as shown in FIG. 2 in the present embodiment is to contribute to the high integration of the semiconductor chip 10. .
- the stress applied to the interface between the first pad 11 and the UBM 13 is relaxed, the decrease in connection reliability is suppressed even if the size of the first pad 11 is reduced.
- the outer ball 33 between the BGA substrate 20 and the mounting substrate 40 at the time of mounting will be described.
- no under-finole resin is provided between the BGA substrate 20 and the mounting substrate 40, and only the outer balls 33 connect.
- the BGA substrate 20 and the mounting substrate 40 are less likely to cause "warping" to increase the strength than the semiconductor chip 10, there is not much longitudinal stress. Therefore, lateral stress mainly caused by the difference in thermal expansion coefficient between the BGA substrate 20 and the mounting substrate 40 is mainly applied to the outer ball 33.
- BGA substrate 20 Since the size of the external electrodes 22 and the connection pads 41 of the mounting substrate 40 is large, the area of the joint surface between the outer balls 33 and them is large, and the strength against tensile stress is originally high. Therefore, with regard to the outer ball 33, it is desirable that the outer ball 33 be strong enough to absorb the stress in the lateral direction.
- the stress caused by the difference in thermal expansion coefficient between the BGA substrate 20 and the mounting substrate 40 tends to be concentrated at the outer peripheral portion of the BGA substrate 20.
- the outer balls 33 are made of a material having a low elastic modulus, the respective outer balls 33 are deformed and the stress is not absorbed, and the stress is released to the outer peripheral portion of the BGA substrate 20.
- stress applied to the outer ball 33 in the outer peripheral portion is increased.
- the outer ball 33 is broken and a break easily occurs.
- a solder alloy having a high elastic modulus is used as the outer ball 33.
- the outer ball 33 having a high modulus of elasticity can hold the externally applied stress which is greater than the deformation according to the stress as its own internal stress. Therefore, each outer ball 33 can absorb stress caused by the difference in thermal expansion coefficient between BGA substrate 20 and mounting substrate 40, and stress concentration on outer ball 33 in the outer peripheral portion of BGA substrate 20 can be achieved. Is eased. Therefore, the disconnection between the BGA substrate 20 and the mounting substrate 40 can be suppressed, and the connection reliability between the BGA substrate 20 and the mounting substrate 40 is improved.
- the space between the semiconductor chip 10 and the BGA substrate 20 and The force S can improve the connection reliability between the BGA substrate 20 and the mounting substrate 40.
- the Sn_Ag_Cu-based solder is generally used as lead-free solder used for solder bumps and solder balls.
- the modulus of elasticity of the Sn_Ag_Cu-based solder alloy is the percentage of Ag contained in it It is almost determined by mass%). Usually, the higher the proportion of Ag, the higher the elastic modulus. Therefore, when applying a Sn—Ag_Cu based solder alloy as the inner bump 31 and the outer ball 33 in the present embodiment, a solder alloy with a low ratio of Ag is used for the inner bump 31 and Ag is used for the outer ball 33. Use solder alloys that have a large percentage. As a result, the elastic modulus of the inner bump 31 becomes low, and the outer ball 3 The elastic modulus of 3 is high.
- the inventor conducted an experiment to obtain a composition of a solder alloy with high connection reliability.
- the endurance test (temperature cycle test) against repeated temperature changes was conducted for the semiconductor device configured as shown in Fig.1.
- a Sn_Ag_Cu-based solder alloy was used as the inner bump 31 and the outer solder 33.
- FIGS. 5 to 13 are diagrams for explaining the manufacturing process.
- the same elements as those shown in FIG. 1 are denoted by the same reference numerals.
- FIG. 5 (a) a semiconductor chip 10 having a first pad 11 of aluminum on the surface is formed (Sl).
- FIG. 5 (b) shows an enlarged cross section of the first pad 11 on the surface of the semiconductor chip 10.
- a passivation film 12 is formed on the surface of the semiconductor chip 10, and the passivation film 12 is provided with an opening through which the first pad 11 is exposed.
- UBM 13 is formed on the surface of the first pad 11 as shown in FIG. 6 in order to improve the wettability with the solder (S 2).
- the UBM 13 is formed by sequentially sputtering Ti, Cu and Ni on the semiconductor chip 10 and then patterning.
- the inner bump is formed by screen printing a solder paste consisting of Ag: 1.0% by mass, 11: 0.5% by mass, and the balance Sn on the first pad 11 via the UBM 13 as shown in FIG.
- the solder alloy 31a to be 31 is formed (S3).
- FIG. 8A a BGA having a second pad 21 for connection to the semiconductor chip 10 and an external electrode 22 for connection to the outside (mounting substrate) Substrate 20 (S4).
- FIG. 8 (b) shows an enlarged cross section of the second pad 21 on the surface of the BGA substrate 20 and is drawn.
- a solder resist 23 is formed on the surface of the BGA substrate 20, and an opening is provided in the solder resist 23 so that the second node 21 is exposed.
- a coating 24 is formed to prevent the “deterioration phenomenon” of the second pad 21 by the solder.
- the coating 24 is formed by sequentially depositing, for example, Ni and Au on the second pad 21 by electroless plating (S5). And on the second pad 21 through a ⁇ instrument Koti ring 24 in FIG. 10, the solder alloy 31b, Ag:. L 0 wt%, Rei_11: 0.5 Weight 0/0, the solder paste and the balance Sn Is screen-printed to form a solder alloy 31b to be the inner bump 31 (S6).
- solder alloy 31a of the semiconductor chip 10 and the solder alloy 3 lb of the BGA substrate 20 are brought into close contact and heat and pressure are applied for bonding (S7).
- the inner bump 31 is formed by joining the solder alloy 31a and the solder alloy 31b, and the semiconductor chip 10 and the BGA substrate 20 are connected.
- the compositions of the solder alloys 31a and 31b are both Ag: 1.0% by mass, Cu: 0.5% by mass, and the balance Sn. the same ingredients Ag composition of the inner bumps 31:. l 0 mass%, Cu: 0. 5 mass 0/0, the balance being Sn.
- packaging of the semiconductor device is performed (S 9). That is, as shown in FIG. 13, the stiffener 34 is fixed on the BGA substrate 20 using the adhesive tape 35, and the heat spreader 36 is mounted on the semiconductor chip 10 via the heat dissipation resin 37. At this time, the heat spreader 36 is fixed on the stiffener 34 using the adhesive tape 38.
- solder balls consisting of Ag: 3.0% by mass, Cu: 0.5% by mass and the balance Sn are mechanically mounted on the external electrodes 22 on the lower surface of the BGA substrate 20, and the solder balls are reflowed by reflow.
- the outer ball 33 is formed on the outer electrode 22 by melting the solder ball (S10).
- S10 solder ball
- the conductor device 1 is connected to the outer ball 33 on the top surface of the mounting substrate 40. It is mounted so as to be in contact with the pad 41, and the outer ball 33 is melted by reflow and joined to the connection pad 41. As a result, as shown in FIG. 3, the semiconductor device 1 is mounted on the mounting substrate 40.
- an underfill resin is not provided between the BGA substrate 20 and the mounting substrate 40 at the time of mounting.
- the semiconductor device includes the inner bump 31 having a relatively low elastic modulus and the outer ball 33 having a relatively high elastic modulus.
- the inner bump 31 can be deformed in response to the stress to buffer the stress due to the difference in thermal expansion coefficient between the inner bump 31 and the underfill resin 32, and the inner bump 31 and the semiconductor chip 10 can be used.
- the stress concentration on the connection with the BGA substrate 20 can be relaxed.
- the area of the electrical connection portion to the inner bump 31 on the surface of the first pad 11 that is, the interface between the first pad 11 and the inner bump 31 shown in FIG. 2 becomes small.
- the inner bump 31 buffers the stress, so that it is possible to prevent the disconnection at that portion.
- the outer ball 33 can have a force S that holds externally applied stress as its own internal stress. Therefore, each outer ball 33 can absorb the stress caused by the difference in thermal expansion coefficient between the BGA substrate 20 and the mounting substrate 40, and the stress concentration on the outer ball 33 in the outer peripheral portion of the BGA substrate 20 can be obtained. Is relieved. Therefore, disconnection between the BGA substrate 20 and the mounting substrate 40 can be suppressed. As described above, according to the present embodiment, it is possible to improve the connection reliability of the internal wiring of the semiconductor device 1 and the connection reliability with the external wiring at the time of mounting.
- the outer ball 33 is used to connect the BGA substrate 20 and the mounting substrate 40 during mounting, and an underfill resin is not provided between the two.
- the outer ball 33 having a high modulus of elasticity has sufficient strength, and the underfill resin is unnecessary.
- the advantage that the generation of the stress resulting from the difference of the thermal expansion coefficient of the underfill resin and the outer ball 33 is prevented, the number of manufacturing processes and the manufacture There is also an effect that the increase in manufacturing cost is suppressed.
- the modulus of elasticity of the Sn—Ag—Cu-based solder alloy increases as the proportion of Ag increases. Therefore, as the inner bump 31 and the outer ball 33, the Sn—Ag_Cu-based solder is used.
- a solder alloy with a low percentage of Ag may be used for the inner bumps 31, and a solder alloy with a high percentage of Ag may be used for the outer balls 33.
- the percentage of Ag of the inner bump 31 is 0 to 1.5 mass% and the percentage of Ag of the ball 33 is 2.5 mass% or more (desirably 3% or more). It has been found that particularly excellent connection reliability can be obtained.
- solder alloys other than Sn—Ag_Cu may be used.
- the force showing the structure in which the UBM 13 and the coating 24 are formed on the surface of the first pad 11 and the surface of the second pad 21 respectively is shown.
- the second pad 21 has excellent wettability with the solder and a corrosion-resistant material is used, it is not necessary to provide the UBM 13 or the coating 24.
- the inner bump 31 may be bonded directly to the first pad 11 and the second pad 21. It is obvious that the above effect can be obtained also in that case.
- the UBM 13 is not limited to those exemplified in the three-layer structure of Ti, Cu and Ni, and the coating 24 is exemplified by the two-layer structure of Ni and Au.
- Ni-free UBM or electrode coating may be used
- step S6 of FIG. 3 the force applied by screen printing of the solder paste is applied either or both of them. Let's go at it.
- solder alloys 31a and 31b consisting of three or more metals by electrolytic plating. Therefore, when it is desired to form the Sn--Ag--Cu-based inner bump 31 by electrolytic plating, for example, one of the solder alloys 31a and 31b is formed of a solder alloy composed of Sn and Ag, and the other is formed of Sn and Cu.
- Solder It is formed of an alloy.
- step S7 in FIG. 3 the melted solder alloys 31a and 3 lb are mixed, and as a result, the inner bumps 31 of Sn_Ag_Cu system are formed.
- the application of the present invention is not limited to this configuration.
- a structure having only one of the stiffener 34 and the heat spreader 36, a structure without both, and a structure in which the upper surface is covered with a mold resin instead of the stiffener 34 and the heat spreader 36 may be used.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Wire Bonding (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/018579 WO2006064534A1 (ja) | 2004-12-13 | 2004-12-13 | 半導体装置 |
| JP2006548593A JP4731495B2 (ja) | 2004-12-13 | 2004-12-13 | 半導体装置 |
| US11/792,955 US7759793B2 (en) | 2004-12-13 | 2004-12-13 | Semiconductor device having elastic solder bump to prevent disconnection |
| US12/817,742 US7951701B2 (en) | 2004-12-13 | 2010-06-17 | Semiconductor device having elastic solder bump to prevent disconnection |
| US13/045,044 US8101514B2 (en) | 2004-12-13 | 2011-03-10 | Semiconductor device having elastic solder bump to prevent disconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/018579 WO2006064534A1 (ja) | 2004-12-13 | 2004-12-13 | 半導体装置 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/817,742 Division US7951701B2 (en) | 2004-12-13 | 2010-06-17 | Semiconductor device having elastic solder bump to prevent disconnection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006064534A1 true WO2006064534A1 (ja) | 2006-06-22 |
Family
ID=36587599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/018579 Ceased WO2006064534A1 (ja) | 2004-12-13 | 2004-12-13 | 半導体装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (3) | US7759793B2 (ja) |
| JP (1) | JP4731495B2 (ja) |
| WO (1) | WO2006064534A1 (ja) |
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| JP2009218576A (ja) * | 2008-01-22 | 2009-09-24 | Sychip Inc | Mcmパッケージ |
| JPWO2009110458A1 (ja) * | 2008-03-05 | 2011-07-14 | 千住金属工業株式会社 | 鉛フリーはんだ接続構造体およびはんだボール |
| EP3940771A1 (en) | 2020-07-15 | 2022-01-19 | Renesas Electronics Corporation | Semiconductor device |
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| JP2012503309A (ja) * | 2008-09-16 | 2012-02-02 | アギア システムズ インコーポレーテッド | 改良された機械的特性を有するPbフリーのハンダ・バンプ |
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| CN102457660A (zh) * | 2010-10-25 | 2012-05-16 | 致伸科技股份有限公司 | 摄像模块的组装方法 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000040713A (ja) * | 1998-07-23 | 2000-02-08 | Citizen Watch Co Ltd | 半導体パッケージの製造方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6177731B1 (en) * | 1998-01-19 | 2001-01-23 | Citizen Watch Co., Ltd. | Semiconductor package |
| KR100398716B1 (ko) | 2000-06-12 | 2003-09-19 | 가부시키가이샤 히타치세이사쿠쇼 | 반도체 모듈 및 반도체 장치를 접속한 회로 기판 |
| JP4152596B2 (ja) | 2001-02-09 | 2008-09-17 | 新日鉄マテリアルズ株式会社 | ハンダ合金、ハンダボール及びハンダバンプを有する電子部材 |
| US6911447B2 (en) * | 2001-04-25 | 2005-06-28 | The Procter & Gamble Company | Melanocortin receptor ligands |
| JP3857112B2 (ja) * | 2001-11-30 | 2006-12-13 | 株式会社日立製作所 | 電子回路形成方法 |
| US6854636B2 (en) * | 2002-12-06 | 2005-02-15 | International Business Machines Corporation | Structure and method for lead free solder electronic package interconnections |
| JP4022139B2 (ja) | 2002-12-25 | 2007-12-12 | 富士通株式会社 | 電子装置及び電子装置の実装方法及び電子装置の製造方法 |
| JP2005211946A (ja) * | 2004-01-30 | 2005-08-11 | Renesas Technology Corp | 半田合金および半導体装置 |
-
2004
- 2004-12-13 US US11/792,955 patent/US7759793B2/en not_active Expired - Fee Related
- 2004-12-13 WO PCT/JP2004/018579 patent/WO2006064534A1/ja not_active Ceased
- 2004-12-13 JP JP2006548593A patent/JP4731495B2/ja not_active Expired - Lifetime
-
2010
- 2010-06-17 US US12/817,742 patent/US7951701B2/en active Active
-
2011
- 2011-03-10 US US13/045,044 patent/US8101514B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000040713A (ja) * | 1998-07-23 | 2000-02-08 | Citizen Watch Co Ltd | 半導体パッケージの製造方法 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009218576A (ja) * | 2008-01-22 | 2009-09-24 | Sychip Inc | Mcmパッケージ |
| JPWO2009110458A1 (ja) * | 2008-03-05 | 2011-07-14 | 千住金属工業株式会社 | 鉛フリーはんだ接続構造体およびはんだボール |
| JP2012016748A (ja) * | 2008-03-05 | 2012-01-26 | Senju Metal Ind Co Ltd | 鉛フリーはんだ接続構造体およびはんだボール |
| JP4899115B2 (ja) * | 2008-03-05 | 2012-03-21 | 千住金属工業株式会社 | 鉛フリーはんだ接続構造体およびはんだボール |
| KR101279291B1 (ko) * | 2008-03-05 | 2013-06-26 | 센주긴조쿠고교 가부시키가이샤 | 납프리 땜납 접속 구조체 및 땜납 볼 |
| EP3940771A1 (en) | 2020-07-15 | 2022-01-19 | Renesas Electronics Corporation | Semiconductor device |
| US11335571B2 (en) | 2020-07-15 | 2022-05-17 | Renesas Electronics Corporation | Semiconductor device including a package substrate and a semiconductor chip |
Also Published As
| Publication number | Publication date |
|---|---|
| US8101514B2 (en) | 2012-01-24 |
| US7759793B2 (en) | 2010-07-20 |
| US20110163444A1 (en) | 2011-07-07 |
| US20100255673A1 (en) | 2010-10-07 |
| JP4731495B2 (ja) | 2011-07-27 |
| JPWO2006064534A1 (ja) | 2008-08-07 |
| US7951701B2 (en) | 2011-05-31 |
| US20080128887A1 (en) | 2008-06-05 |
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