WO2005045925A1 - 電子装置及びその製造方法 - Google Patents
電子装置及びその製造方法 Download PDFInfo
- Publication number
- WO2005045925A1 WO2005045925A1 PCT/JP2004/016244 JP2004016244W WO2005045925A1 WO 2005045925 A1 WO2005045925 A1 WO 2005045925A1 JP 2004016244 W JP2004016244 W JP 2004016244W WO 2005045925 A1 WO2005045925 A1 WO 2005045925A1
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- interposer
- electronic device
- electrode
- electronic
- electronic element
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- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
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- H01L2924/12042—LASER
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- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12043—Photo diode
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- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
- H01L2924/1816—Exposing the passive side of the semiconductor or solid-state body
- H01L2924/18162—Exposing the passive side of the semiconductor or solid-state body of a chip with build-up interconnect
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- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
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- H01L2924/19041—Component type being a capacitor
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- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/1901—Structure
- H01L2924/1904—Component type
- H01L2924/19043—Component type being a resistor
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- H01L2924/30—Technical effects
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- H01L2924/30—Technical effects
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- H01L2924/3511—Warping
Definitions
- the present invention relates to an electronic device and a method of manufacturing the same, and more particularly, to an electronic device configured to electrically connect an electronic element to a mounting board via an interposer and a method of manufacturing the same.
- a semiconductor device has a structure in which a semiconductor chip is joined to an interposer.
- a semiconductor device using a lead frame as an interposer has a structure in which a semiconductor chip is fixed to a die pad formed on a lead frame serving as an interposer, and the lead frame and the semiconductor chip are electrically connected by wires. Have been.
- a semiconductor device having a package structure called a BGA (Bal I Grid Array) or an LGA (Land Grid Array).
- BGA Bal I Grid Array
- LGA Land Grid Array
- This semiconductor device employs a structure in which solder bumps are formed on a semiconductor chip and the semiconductor chip is flip-chip mounted on a substrate serving as an interposer.
- an interposer used for a BGA or LGA has an electrode pad to which a solder bump is bonded on the surface and an electrode pad to which an external connection terminal (solder pole or lead) is bonded on the back surface. ing.
- Each of the electrode pads provided on the front and back sides is electrically connected by a via formed through the interposer substrate.
- the semiconductor chip and the interposer are electrically and mechanically joined by a bump, so that the mechanical joining property between the semiconductor chip and the interposer is weak. For this reason, an underfill resin is provided between the semiconductor chip and the interposer, thereby increasing the mechanical strength at the joint position between the semiconductor chip and the interposer.
- a chip-size package type semiconductor device hereinafter referred to as CSP
- This CSP is a semiconductor device whose package is approximately the same size as a semiconductor chip (bare chip).
- This CSP has solder bumps or posts (bonded to the semiconductor chip by solder) formed as external connection terminals, and is mounted on a mounting board (this mounting board is also considered to be a type of interposer). Flip chip mounted.
- the above-mentioned post is configured to be soldered to an electrode on a semiconductor chip (for example, see Japanese Patent Application Laid-Open No. 2002-16469).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-21664
- a more specific object of the present invention is to provide an electronic device and a method for manufacturing the same, which can easily and surely cope with a narrow pitch and reduce the manufacturing cost. .
- the present invention provides an electronic device, an interposer substrate to which the electronic device is bonded, and an interposer having a plurality of boss electrodes connected to electrodes of the electronic device.
- the electronic device provided with the electronic device the electronic device and the interposer substrate are brought into direct contact with each other by direct contact, and the boss electrode is formed directly on the electrode of the electronic device. It is characterized by the following.
- the present invention provides an electronic device, an interposer base material to which the electronic device is bonded, and a semiconductor device provided in a through hole formed in the interposer base material.
- An electronic device comprising an interposer having a plurality of boss electrodes connected to electrodes of an electronic element, wherein a surface of the electronic element is directly contacted with a surface of the interposer substrate. And the boss electrode is formed directly on the electrode of the electronic element.
- the electronic element and the interposer are directly joined, it is not necessary to provide a bump or an underfill resin at the junction between the electronic element and the interposer, so that the number of parts can be reduced and the electronic device can be reduced.
- the thickness can be reduced.
- the interposer is electrically connected to the electronic element by the post electrode, the pitch between the electrodes can be reduced as compared with the connection structure using the bump, and thus the density of the electronic device can be increased.
- the electronic element and the interposer base material are formed by direct contact with each other, the electronic element and the interposer base material are bonded with a stronger bonding force than the bonding force using the bump and the underfill resin. Can be joined.
- the material of the electronic element and the material of the interposer substrate may be the same.
- the surface of the electronic element and the surface of the interposer substrate are Can be reliably and firmly integrated.
- both the material of the electronic element and the material of the interposer substrate may be silicon.
- a first insulating material layer is formed at least at a position of the electronic element to be joined to the interposer substrate, and at least at a position of the interposer substrate to be joined to the electronic element.
- a structure in which a second insulating layer is formed can be employed.
- the insulating material layer when the insulating material layer is formed at the position where the electronic element and the interposer base material are bonded, the region having high smoothness required for bonding can be narrowed. The formation of the layer can be facilitated. Further, when the insulating material layer is formed on the entire surface of the electronic element and the interposer substrate, the insulating layer can function as a protective layer for protecting the electronic element and the interposer substrate.
- a configuration may be adopted in which a plurality of the post electrodes are disposed in one of the through holes.
- a step may be formed in the interposer base material, and the electronic element may be housed in the step.
- the thickness of the electronic device can be reduced.
- the interposer substrate may have a configuration in which a plurality of the electronic elements are mounted.
- the interposer substrate may be configured to be joined to a back surface of the electronic element.
- the back surface of the electronic element is in contact with the interposer substrate, so that the bonding area between the electronic element and the interposer substrate can be increased, and the mounting strength of the electronic element can be increased. Can be increased.
- a configuration may be adopted in which a sealing resin for sealing the electronic element is provided on the interposer substrate.
- the sealing resin for sealing the electronic element is provided on the interposer base, the electronic element is sealed in the interposer base by the sealing resin. Since the electronic element is fixed, the electronic element can be reliably protected, and the mounting strength of the electronic element to the interposer substrate can be increased.
- the electronic element can be a semiconductor chip.
- the electronic element may be a passive element.
- a method of manufacturing an electronic device includes the steps of: directly contacting a surface of an interposer substrate having a through hole with a surface of an electronic element; An integrating step of integrating the interposer base material and the electronic element; and a post electrode for directly forming a boss electrode in the through hole and on the electrode of the electronic element after completion of the integrating step.
- the electronic element and the interposer substrate are brought into contact by direct contact in the integration step, so that it is necessary to provide a bump or an underfill resin at the junction between the electronic element and the interposer. It can be eliminated and the manufacturing process can be simplified.
- a post electrode forming step was performed to directly form a boss electrode in the through hole and on the electrode of the electronic element.
- the impedance between the electronic element and the interposer can be reduced, and the electrical characteristics can be improved.
- the boss electrode can be formed using the through-hole formed in the interposer substrate as a mold, the formation of the post electrode can be simplified.
- a method of manufacturing an electronic device includes a step of forming a boss electrode for directly forming a boss electrode on an electrode of an electronic element; After the step is completed, an integrating step of bringing the surface of the interposer substrate having the through hole formed therein into direct contact with the surface of the electronic element to integrate the interposer substrate and the electronic element, A rewiring forming step of forming a rewiring layer electrically connected to the ground electrode, and an external connecting electrode forming step of forming an external connecting electrode on the rewiring.
- the electronic element and the interposer base material are brought into direct contact in the integration step, it is necessary to provide a bump or an underfill resin at the junction between the electronic element and the interposer. It can be eliminated and the manufacturing process can be simplified. Further, since the boss electrode is formed directly on the electrode of the electronic element in the post electrode forming step, the impedance between the electronic element and the interposer can be reduced, and the electrical characteristics can be improved. In addition, by performing the integration step after the post-electrode formation step is completed, the post electrode formation can be performed regardless of the through-hole formed in the interposer base material. The size of the boss electrode can be reduced as compared with the method of forming the boss electrode using the boss electrode.
- a protective layer forming step of forming a protective layer made of an insulating material for holding the post electrode on the electronic element may be provided.
- the present invention provides an electronic device, wherein the electronic device and the interposer are integrated by direct contact with each other.
- the electronic element and the interposer are directly bonded, it is not necessary to provide a bump or an underfill resin at the connection between the electronic element and the interposer, so that the number of parts can be reduced and the electronic device can be reduced.
- the thickness can be reduced.
- the electronic element may be an optical device
- the interposer may be provided with an optical waveguide optically connected to the optical device.
- the present invention it is not necessary to provide a bump or an underfill resin at the junction between the electronic element and the interposer, the number of components can be reduced, and the electronic device can be made thinner.
- the pitch between the electrodes can be reduced as compared with the connection structure using bumps, so that the density of the electronic device can be increased.
- the electronic element and the interposer base material are integrated by direct contact, the electronic element and the interposer base material can be bonded with a bonding force stronger than the bonding force using the bump and the underfill resin. it can.
- FIG. 1 is a sectional view showing a semiconductor device according to a first embodiment of the present invention.
- FIG. 2A is a view for explaining the method for manufacturing a semiconductor device according to the first embodiment (part 1).
- FIG. 2B is a view for explaining the method for manufacturing the semiconductor device according to the first embodiment (part 2).
- FIG. 2C is an illustration for explaining the method of manufacturing the semiconductor device according to the first embodiment (part 3).
- FIG. 3A is a view for explaining the method for manufacturing a semiconductor device according to the first embodiment (part 4).
- FIG. 3B is a view for explaining the method for manufacturing a semiconductor device according to the first embodiment (part 5).
- FIG. 3C is an illustration for explaining the method of manufacturing the semiconductor device according to the first embodiment (part 6).
- FIG. 4A is a view for explaining the method for manufacturing a semiconductor device according to the first embodiment (part 7).
- FIG. 4B is an illustration for explaining the method of manufacturing the semiconductor device according to the first embodiment (No. 8).
- FIG. 4C is an illustration for explaining the method of manufacturing the semiconductor device according to the first embodiment (No. 9).
- FIG. 4D is a view for explaining the method for manufacturing a semiconductor device according to the first embodiment (part 10).
- FIG. 5 is a sectional view showing a semiconductor device according to a second embodiment of the present invention.
- FIG. 6A is a view illustrating a method for manufacturing a semiconductor device according to a second embodiment (part 1).
- FIG. 6B is a view for explaining the method for manufacturing the semiconductor device according to the second embodiment (part 2).
- FIG. 7 is a sectional view showing a semiconductor device according to a third embodiment of the present invention.
- FIG. 8A is a view for explaining the method for manufacturing the semiconductor device according to the third embodiment (part 1).
- FIG. 8B is an illustration for explaining the method of manufacturing the semiconductor device according to the third embodiment (No. 2).
- FIG. 8C is an illustration for explaining the method of manufacturing the semiconductor device according to the third embodiment (part 3).
- FIG. 9 is a sectional view showing a semiconductor device according to a fourth embodiment of the present invention.
- FIG. 10A is a view illustrating a method for manufacturing a semiconductor device according to a fourth embodiment (No. 1).
- FIG. 10B is a view for explaining the method for manufacturing the semiconductor device according to the fourth embodiment (part 2).
- FIG. 11 is a sectional view showing a semiconductor device according to a fifth embodiment of the present invention.
- FIG. 12A is a view illustrating a method for manufacturing a semiconductor device according to a fifth embodiment (part 1).
- FIG. 12B is an illustration for explaining the method of manufacturing the semiconductor device according to the fifth embodiment (No. 2).
- FIG. 12C is an illustration for explaining the method of manufacturing the semiconductor device according to the fifth embodiment (part 3).
- FIG. 13 is a sectional view showing a semiconductor device according to a sixth embodiment of the present invention.
- FIG. 14 is a sectional view showing a semiconductor device according to a seventh embodiment of the present invention.
- FIG. 15 is a sectional view showing a semiconductor device according to an eighth embodiment of the present invention.
- FIG. 16 is a sectional view showing a semiconductor device according to a ninth embodiment of the present invention.
- FIG. 17 is a perspective view showing a semiconductor device according to a ninth embodiment of the present invention.
- FIG. 18 is a sectional view showing a semiconductor device according to a tenth embodiment of the present invention.
- FIG. 19 is a sectional view showing a semiconductor device according to a eleventh embodiment of the present invention.
- FIG. 20 is a sectional view showing a semiconductor device according to a 12th embodiment of the present invention.
- FIG. 21 is a sectional view showing a semiconductor device according to a thirteenth embodiment of the present invention.
- FIG. 22 is a perspective view showing a semiconductor device according to a thirteenth embodiment of the present invention.
- FIG. 23 is a sectional view showing a semiconductor device according to a fourteenth embodiment of the present invention.
- FIG. 24 is a sectional view showing a semiconductor device according to a fifteenth embodiment of the present invention.
- FIG. 25 is a perspective view showing a semiconductor device according to a fifteenth embodiment of the present invention.
- FIG. 26 is a sectional view showing a semiconductor device according to a sixteenth embodiment of the present invention.
- FIG. 27 is a sectional view showing a semiconductor device according to a seventeenth embodiment of the present invention.
- FIG. 28 is a cross-sectional view showing an electronic device according to an eighteenth embodiment of the present invention.
- FIG. 29 is a cross-sectional view showing an electronic device according to a nineteenth embodiment of the present invention.
- FIG. 30 is a cross-sectional view showing an electronic device according to a twenty-ninth embodiment of the present invention.
- FIG. 31 is a cross-sectional view showing an electronic device according to a twenty-first embodiment of the present invention.
- FIG. 32 is a cross-sectional view taken along the line AA in FIG.
- FIG. 1 is a sectional view showing an electronic device 1OA according to a first embodiment of the present invention.
- the electronic device 1 OA has a simple configuration including a semiconductor chip 11 and an interposer 20 A (hereinafter, an electronic device using a semiconductor chip as an electronic element is hereinafter referred to as a semiconductor device). And).
- the semiconductor chip 11 is a high-density semiconductor chip, and has a configuration in which a plurality of electrodes 13 are formed on the circuit forming surface side.
- the electrode 13 is, for example, an aluminum electrode, and a barrier metal 14 is formed thereon.
- the barrier metal 14 has a configuration in which a plurality of metal films are stacked, and the outermost layer is a copper (Cu) film.
- the semiconductor chip 11 is formed from a silicon substrate, and the insulating film 15 is therefore silicon dioxide (SiO).
- This silicon dioxide has high electrical insulation properties and physical stability.
- the thin film circuit formed on the semiconductor chip 11 is protected by the insulating film 15.
- the predetermined position of the insulating film 15 is brought into contact with and integrated with the semiconductor chip 11 as described later, but at least the surface of the insulating film 15 in this contact region is a highly accurate smooth surface.
- the interposer 20A is composed of an interposer base material 21A, a post electrode 22A, a rewiring layer 23, an external connection terminal 24, a second insulating layer 26, and the like.
- the interposer substrate 21 A is formed of silicon, and a post electrode 22 A is formed at a position corresponding to the electrode 13 formed on the semiconductor chip 11.
- the post electrode 22A is formed of copper (Cu). This post electrode
- a first insulating layer 25 is formed.
- a polyimide resin is used for the first insulating layer 25.
- the lower end of the boss electrode 22 A in the figure is directly connected to the barrier metal 14, and the upper end is electrically connected to the rewiring layer 23.
- the redistribution layer 23 is also made of copper like the boss electrode 22A, and has a predetermined pattern.
- An external connection terminal 24 functioning as an external connection end is formed at an end of the redistribution layer 23 opposite to the connection position with the post electrode 22A.
- a solder pole is used as the external connection terminal 24.
- a second insulating layer 26 is formed on the redistribution layer 23. No.
- the second insulating layer 26 is formed mainly to protect the redistribution layer 23.
- the second insulating layer 26 is also made of a polyimide resin, like the first insulating layer 25.
- the bonding material between the semiconductor chip 11 and the interposer base material 21 A is used for bonding. No materials are used, and no joining means involving heating such as welding or welding is used.
- each of the semiconductor chip 11 and the interposer substrate 21 A The bonding surface at the bonding position is a high-precision smooth surface (mirror surface), and the semiconductor chip 11 and the interposer substrate 21 A are placed in a vacuum environment and contacted while pressing the smooth surfaces together. Let it. As a result, the smooth surfaces are in close contact with each other, the respective smooth surfaces are integrated without using an adhesive or the like, and the semiconductor chip 11 and the interposer base material 21 A are in a state of being strongly bonded. This is called a method for bonding the surfaces of micro substrates.)
- the materials to be joined are the same or the same type. That is, it is desirable that the material at the bonding position of the semiconductor chip 11 and the material at the bonding position of the interposer substrate 21A be the same or the same. As a result, the bonding strength between the semiconductor chip 11 and the interposer substrate 21A can be increased, and the reliability of the semiconductor device 1OA can be increased.
- the bonding position of the semiconductor chip 11 is the insulating film 15 made of SiO 2.
- the interposer substrate 21 A is silicon. However, although not shown, a thin film of SiO 2 is usually formed on the surface of the interposer substrate 21A.
- the material at the bonding position of the semiconductor chip 11 and the material at the bonding position of the interposer substrate 21A are the same.
- the bonding positions of the semiconductor chip 11 and the interposer substrate 21 A are both smooth surfaces. Therefore, in the present embodiment, the semiconductor chip 11 and the interposer 2OA are integrated by contacting and pressing the mutually joined smooth surfaces in a vacuum environment.
- the semiconductor chip 11 and the interposer 2 OA are brought into direct contact with each other, so that the bumps conventionally used are performed.
- the semiconductor chip 11 and the interposer 20A can be joined with a stronger joining force than a structure in which the semiconductor chip and the interposer are joined by using the semiconductor chip and the underfill resin.
- no sealing resin for sealing the semiconductor chip 11 is provided, so that heat radiation characteristics can be improved. Also, the semiconductor chip 11 and the interposer 2 OA can be joined simply by contacting them in a vacuum environment. Therefore, the number of components required for joining can be reduced.
- a configuration is adopted in which a joining auxiliary member 27 is provided at a step formed outside by joining the semiconductor chip 11 and the interposer 2OA.
- the boost electrode 22A is formed in the through hole 31A formed in the interposer substrate 21A.
- solder bumps were formed on the semiconductor chip, and the solder bumps were bonded to the interposer by flip chip bonding. It is.
- the boss electrode 22 A is connected to the electrode of the semiconductor chip 11.
- the feature is that it is formed directly on 13 (specifically on barrier metal 14). That is, in the semiconductor device 1 OA according to the present embodiment, the post electrode 22 A is formed directly on the electrode 13 by a plating method (which will be described later), and the post electrode 22 A and the electrode 13 are formed. There is no other conductive element such as a solder bump between them.
- the semiconductor device 1OA according to the present embodiment it is possible to reduce the number of components because bumps and underfill resin, which are conventionally required, are not required. Further, since the bump and the underfill resin are not required, the thickness of the semiconductor device 1OA can be reduced. Furthermore, the pitch between the adjacent boost electrodes 22A can be made narrower than in the conventional connection structure using bumps, so that the density of the semiconductor device 1OA can be increased. You.
- 2A to 4D are views for explaining a method for manufacturing the semiconductor device 1OA.
- 2A to 4D show the same configuration as the configuration shown in FIG. The same reference numerals are given and the description thereof will be omitted.
- the semiconductor chip 11 is manufactured through a well-known semiconductor manufacturing process, and an electrode 13 protected by a barrier metal 14 is formed on a circuit forming surface side (upper surface in the figure). .
- an insulating film 15 made of SiO was formed except for the position where the electrode 13 was formed.
- the electronic circuit formed on the circuit formation surface is protected by the insulating film 15. At least a portion of the insulating film 15 to be joined to the interposer substrate 21A is smoothed with high precision.
- the interposer substrate 21A is cut out from a silicon wafer, and a through hole 31A is formed at a position corresponding to the electrode 13 formed on the semiconductor chip 11.
- the through-hole 31 A is configured to have a cross-sectional area larger than the area of the electrode 13.
- This interposer substrate 21A has a SiO 2 film (not shown) as a protective film formed on the entire surface thereof.
- the surface of the interposer substrate 21 A that is to be joined to the semiconductor chip 11 is smoothed with high precision.
- Various methods are conceivable for smoothing the bonding surface formed on the semiconductor chip 11 and the interposer substrate 21A, but a relatively inexpensive method such as lapping is used. If it is possible to form a flat surface with higher precision, CMP (chemical mechanical polishing) or dry etching may be applied.
- the semiconductor chip 11 and the interposer base material 21 A having the above-described configurations are put in a vacuum apparatus. After positioning the through hole 31 A and the electrode 13, as shown in FIG. 2B, the semiconductor chip 11 and the interposer substrate 21 A are brought into contact with each other on their flat surfaces (mirror surfaces). Subsequently, pressure is applied. As a result, the smooth surfaces adhere to each other, and the respective smooth surfaces are integrated without using an adhesive or the like, whereby the semiconductor chip 11 and the interposer substrate 21 A are firmly joined. (Integration process).
- a post electrode forming step of directly forming a post electrode 22 A in the through hole 31 A and on the electrode 13 (barrier metal 14) of the semiconductor chip 11 is performed. Is done.
- a first insulating layer 25 is formed so as to seal the through hole 31A and cover the upper surface of the interposer substrate 21A. I do.
- the first insulating layer 25 is a polyimide resin, and can be formed on the interposer substrate 21A using a spinner method or a potting method.
- a first resist having a predetermined opening 33 above the first insulating layer 25 is formed.
- Material 32 is formed.
- a process of removing the first insulating layer 25 is performed using the first resist material 32 as a mask. By performing this removal process, as shown in FIG. 3B, an electrode hole 34 is formed, and a barrier metal 14 is exposed at the lower end of the electrode hole 34.
- the post electrode 22A can be formed by either an electrolytic plating method or an electroless plating method.
- a rewiring forming step of forming a rewiring layer 23 is subsequently performed.
- a second resist material 35 having a pattern having an opening 36 at the position where the rewiring layer 23 is formed is formed.
- the second resist material 35 is formed by applying a photoresist material on the interposer substrate 21A, and thereafter performing exposure and development processing.
- the second resist material 35 is formed, copper plating is subsequently performed in the opening 36, and as shown in FIG. Form wiring layer 2 3 To achieve.
- the redistribution layer 23 is formed directly on the upper end of the post electrode 22A, the electrical connection between the post electrode 22A and the redistribution layer 23 is improved.
- the method of forming the rewiring layer 23 either the electrolytic plating method or the electroless plating method can be used.
- an external connection electrode forming step of forming external connection terminals 24 on rewiring layer 23 is subsequently performed.
- the external connection electrode forming step first, the second resist material 35 is removed, and a second insulating layer 26 is formed on the exposed first insulating layer 25 and redistribution layer 23.
- the second insulating layer 26 is formed of a polyimide resin having the same quality as the first insulating layer 25.
- an opening 37 is formed as shown in FIG. 4C.
- the opening 37 is formed at the end of the rewiring layer 23 opposite to the end connected to the boss electrode 22 A, but the formation position of the opening 37 is arbitrary. It is possible to choose. Note that as a method for forming the opening 37, an etching method, a laser processing method, or the like can be used.
- an external connection terminal 24 made of a solder pole is mounted in the opening 37, and is joined to the redistribution layer 23 by heat treatment. .
- the semiconductor device 1OA shown in FIG. 1 is manufactured.
- the semiconductor chip 11 and the interposer substrate 21 A are brought into direct contact with each other in the integration step by bringing them into direct contact with each other. For this reason, it is not necessary to provide a bump-underfill resin, which is conventionally required for joining the semiconductor chip 11 and the interposer 2OA, and the manufacturing process can be simplified.
- the through hole is formed.
- a substrate 22A is formed in 31A.
- the post electrode 22 A is formed directly on the barrier metal 14 (electrode 13) of the semiconductor chip 11, the semiconductor chip 11 The impedance between the top 11 and the interposer 2 OA can be reduced, and the electrical characteristics can be improved.
- the post electrode 22A is formed using the through hole 31A formed in the interposer substrate 21A (actually, the film of the first insulating layer 25 is formed on the inner periphery). Since it is formed, the formation of the post electrode 22A can be simplified.
- the material at the joining position between the semiconductor chip 11 and the interposer substrate 21 A is the same (S i O).
- FIG. 5 shows a semiconductor device 1 OB according to a second embodiment of the present invention
- FIGS. 6A and 6B show a method of manufacturing the semiconductor device 10 B (only the integration step). Shown).
- FIG. 5 the same components as those shown in FIGS. 1 to 4D used in the above description are denoted by the same reference numerals, and description thereof will be omitted. The same applies to each figure after FIG. 6A used in the following description.
- the semiconductor device 1 OB has a chip-side polyimide film 16 (corresponding to the first insulating material layer described in claims) on the surface of the insulating film 15 formed on the semiconductor chip 11.
- the chip-side PI film 16 is formed, and the interposer-side polyimide film 28 (the second embodiment of the present invention) is formed on the outer periphery of the interposer substrate 21A constituting the interposer 20B. This is referred to as an interposer-side PI film 28).
- the chip-side PI film 16 is formed on the entire surface of the insulating film 15 (excluding the position where the electrode 13 is formed), and the interposer-side PI film 28 is formed of an interposer substrate. It is formed on the entire outer periphery of 21 A.
- each PI film 16 and 28 is not necessarily the entire outer periphery of the insulating film 15 and the interposer substrate 21A. It does not have to be formed on the surface, but only needs to be formed at least at the joint position between the semiconductor chip 11 and the interposer base material 21A.
- the positions where the semiconductor chip 11 and the interposer base material 21 A of the chip-side PI film 16 and the interposer-side PI film 28 are joined are smooth surfaces having high smoothness.
- the semiconductor chip 11 and the interposer substrate are brought into contact by bringing the chip-side PI film 16 formed on the semiconductor chip 11 into contact with the interposer-side PI film 28 formed on the interposer substrate 21A. It is configured to be joined to the material 21A.
- the chip-side PI film 16 is formed on the insulating film 15 on the semiconductor chip 11 side in advance as shown in FIG. 6A.
- the interposer-side PI film 28 is formed on the surface (in the present embodiment, the entire outer periphery) of the interposer substrate 21A. Then, the semiconductor chip 11 and the interposer substrate 21 A having the above configuration are put in a vacuum device, and their flat surfaces (mirror surfaces) are brought into contact with each other under a predetermined vacuum environment, and then pressurized. You.
- the smooth surfaces are in close contact with each other, and the smooth surfaces are integrated without using an adhesive or the like, whereby the semiconductor chip 11 and the interposer base material 2 are integrated.
- 1 A is in a firmly joined state.
- the surfaces of the semiconductor chip 11 and the interposer substrate 21A are coated with the PI films 16 and 28 (resin film), they can be brought into contact without using an adhesive or the like and pressed.
- the PI films 16 and 28 are connected to the semiconductor chip 11 and the interposer substrate 2
- the area for providing high smoothness required for bonding can be narrowed, and the surface smoothing treatment of the PI films 16 and 28 can be facilitated. it can.
- the PI films 16 and 28 are formed on the entire outer periphery of the semiconductor chip 11 and the interposer base material 21A, the PI films 16 and 28 are formed on the semiconductor chip 11 and the interposer base material 2A. 1 A protective layer to protect A Function.
- FIG. 7 shows a semiconductor device 1OC according to a third embodiment of the present invention
- FIGS. 8A to 8C show a method of manufacturing the semiconductor device 1OC (post-electrode forming step and integrated process). Only the conversion process is shown).
- the semiconductor device 10C according to the present embodiment is characterized in that it is manufactured by performing a Bost electrode forming step before performing the integrating step. That is, in the semiconductor device 1 OC according to the present embodiment, after the post electrode 22 B is directly formed on the electrode electrode 13 (barrier metal 14) of the semiconductor chip 11, the post electrode 22 B is formed.
- the semiconductor chip 11 is manufactured by directly bonding the semiconductor chip 11 to the interposer substrate 21A.
- the following method can be used for forming the post electrodes 22 B on the semiconductor chip 11. That is, first, a dry film having photosensitivity is attached on the circuit forming surface of the semiconductor chip 11. The thickness of the dry film is set equal to the height of the post electrode 22B. Subsequently, by exposing and developing the dry film, a through hole is formed at the position where the post electrode 22B is to be formed.
- the barrier metal 14 is exposed at the bottom. Subsequently, by performing copper plating, a post electrode 22A is formed in the through hole formed in the dry film. At this time, the post electrode 22A is formed directly on the barrier metal 14 (electrode 13). Subsequently, by peeling off the dry film, a semiconductor chip 11 having the post electrode 22B shown in FIG. 8A is manufactured.
- an integrating step is subsequently performed.
- the semiconductor chip 11 and the interposer substrate 21 B are placed in a vacuum device, and their flat surfaces (mirror surfaces) are brought into contact with each other under a predetermined vacuum environment, and then pressurized.
- the smooth surfaces adhere to each other, and the respective smooth surfaces are integrated without using an adhesive or the like.
- FIG. 8B the semiconductor chip 11 and the interposer substrate 21 B are firmly joined. State.
- the post electrode 22B is formed in the through hole 31A formed in the interposer substrate 21A. It is in a state of being passed through. Also, since the diameter of the post electrode 22B is smaller than the diameter of the through hole 31A, there is a gap between the outer peripheral surface of the post electrode 22B and the inner peripheral surface of the through hole 31A. A gap is formed.
- first insulating layer 25 is formed.
- the first insulating layer 25 is also filled in the gap between the outer peripheral surface of the post electrode 22B and the inner peripheral surface of the through hole 31A.
- the steps after the completion of the formation of the first insulating layer 25 are the same as those of the method for manufacturing the semiconductor device 10A according to the first embodiment described with reference to FIGS. 2A to 4D. Therefore, the description is omitted.
- the integration process is performed after the post-electrode forming process is completed.
- the through-hole 31A is used as a mold and Since the electrode 22A was formed, the diameter of the through-hole 31A directly determined the diameter of the post electrode 22A.
- Drilling of the interposer substrate 21A is mainly performed by mechanical processing or laser processing.
- the dry film having photosensitivity is exposed and developed to form a through hole for forming the deposition electrode 22B, the through hole is reduced in size. Can be planned.
- the post electrodes 22B can be arranged at a narrow pitch, and the density of the semiconductor device 1OC can be increased.
- FIG. 9 shows a semiconductor device 1OD according to a fourth embodiment of the present invention
- FIGS. 1OA and 1OB show a method of manufacturing the semiconductor device 1OD (only the integration process is shown). ).
- the semiconductor device 1 OD according to the present embodiment is characterized in that a plurality of (only two are shown in the figure) boost electrodes 22 A are disposed in one through hole 31 B. Therefore, as shown in FIG. 1OA, the through-hole 31B formed in the interposer substrate 21B has a larger area than the through-hole 31A in the first to third embodiments.
- the configuration is as follows. In the integration step, as shown in FIG. 10B, the edge of the interposer substrate 21B where the through hole 31B is formed is directly bonded to the semiconductor chip 11.
- the through holes are smaller than the accuracy of forming the boss electrode 22 A.
- the precision of forming 31 B can be reduced, and thus the formation of through hole 31 B can be facilitated.
- FIG. 11 shows a semiconductor device 1 OE according to a fifth embodiment of the present invention
- FIGS. 12A to 12 C show a method of manufacturing the semiconductor device 1 OE (post-electrode forming step). And only the integration process).
- the semiconductor device 1 OE according to the present embodiment has the same structure as the semiconductor device 1 OD according to the third embodiment, except that a plurality of boss electrodes 22 B are disposed in one through hole 31 B. It is said to be done. Therefore, the post electrode 22B is also formed directly on the barrier metal 14 (electrode 13).
- the post electrode 22 B is formed using a photosensitive dry film as in the third embodiment described above, and the timing of forming the post electrode 22 B is determined by an integrated process. Will be implemented earlier. Further, the present embodiment is characterized in that after the boss electrode 22B is formed on the semiconductor chip 11, a protective layer 17 for protecting the boss electrode 22B is formed.
- the protective layer 17 is made of an insulating material. Specifically, in the present embodiment, the dry film used for forming the boss electrode 22B is not peeled off and used as it is as the protective layer 17 (protective layer forming step). With this configuration, the step of peeling off the dry film can be eliminated, and the manufacturing process can be shortened and the number of parts can be reduced as compared with the configuration in which the protective layer 17 is newly provided.
- the method for forming the protective layer 17 is not limited to the manufacturing method of this embodiment, and another method (for example, a method using a resist or the like) may be used.
- an integration step is performed.
- the flat surfaces (mirror surfaces) of the semiconductor chip 11 and the interposer substrate 21B are contact-pressed in a predetermined vacuum environment (see FIG. 12A).
- the smooth surfaces adhere to each other, and the respective smooth surfaces are integrated without using an adhesive or the like.
- the semiconductor chip 11 and the interposer base material 2 1B are separated from each other. It will be in the state of being strongly joined. In this bonding state, a gap is formed between the outer periphery of the protective layer 17 and the inner periphery of the through hole 31B as shown in FIG. 12B.
- a process of forming a first insulating layer 25 is performed.
- the first insulating layer 25 is also filled in the gap between the outer peripheral surface of the protective layer 17 and the inner peripheral surface of the through hole 31B. Steps after the completion of the formation process of the first insulating layer 25 will be described with reference to FIGS. 2A to 4D. Since it is the same as the method of manufacturing the semiconductor device 1OA according to the first embodiment described above, the description thereof is omitted.
- the boss electrode 22B since the boss electrode 22B is held by the protective layer 17 made of an insulating material, the boss electrode 22B becomes finer as the pitch becomes narrower. However, the post electrodes 22 B directly formed on the semiconductor chip 11 can be surely protected. Further, when the post electrode 22B is inserted into the through hole 31B, the post electrode 22B (particularly, the post electrode 22B close to the inner periphery of the through hole 31B) is interposed by the interposer substrate 21B. It can be prevented from being damaged by colliding with.
- FIG. 13 shows a semiconductor device 1OF of the sixth embodiment
- FIG. 14 shows a semiconductor device 1OG of the seventh embodiment
- FIG. 15 shows an eighth embodiment.
- the semiconductor device 1 OG 1 OH according to each embodiment is configured so as to further reduce the thickness of the semiconductor device 1 OA ⁇ 1 OE according to the above-described first to fifth embodiments.
- the semiconductor device 1 OF shown in FIG. 13 is characterized in that the interposer 2 OF is composed of the interposer base material 21C and the reinforcing member 29.
- the interposer substrate 21C is formed to be thinner than the interposer substrates 21A and 21B used in the semiconductor device 1OA ⁇ 10E according to the first to fifth embodiments.
- a reinforcing member 29 functioning as a stiffener is provided on the interposer substrate 21C, and is configured to maintain a predetermined mechanical strength.
- the reinforcing member 29 has an opening 38 formed in the center.
- the area of the opening 38 is determined by the area of the through hole 31B formed in the interposer substrate 21C and the semiconductor chip 1 It is set wider than the area of 1. That is, in a state where the semiconductor chip 11 is directly integrated with the interposer base 21 C, a step 39 is formed between the reinforcing member 29 and the interposer base 21 C.
- the semiconductor chip 11 is housed in the section 39. This configuration As a result, the semiconductor chip 11 becomes a step formed in the interposer 2 OF.
- the semiconductor device can be stored in the recessed portion, the thickness of the semiconductor device can be reduced.
- the semiconductor device 1 OG shown in FIG. 14 is characterized in that the step portion 30 is formed directly on the interposer substrate 21 D without separately providing a reinforcing member 29. .
- the semiconductor device 1 OH shown in FIG. 15 has a through hole 31 C formed in the interposer substrate 21 E that is larger than the semiconductor chip 11 to penetrate the semiconductor chip 11. It is configured to be stored in the hole 31C. Regardless of the configuration of the semiconductor device 1 OG, 1 OH, part or all of the height of the semiconductor chip 11 overlaps with the thickness of the interposer base materials 21 D, 21 E. 1 OH can be made thinner.
- Reference numeral 17 denotes a semiconductor device 10I according to the ninth embodiment.
- FIG. 18 is a cross-sectional view of the semiconductor device 10 J according to the tenth embodiment
- FIG. 19 is a cross-sectional view of the semiconductor device 1 OK according to the eleventh embodiment
- FIG. 13 is a sectional view of a semiconductor device 1OL according to a second embodiment.
- Each of the semiconductor devices 10 I 10 L shown in FIGS. 16 to 20 is characterized in that a plurality of semiconductor chips 11 are disposed on an interposer 201-21 H. .
- the same components as those shown in FIGS. 1A to 15 used in the above description are denoted by the same reference numerals, and description thereof will be omitted.
- the semiconductor device 10I according to the ninth embodiment shown in FIGS. 16 and 17 has a configuration in which no through-hole is formed in the interposer substrate 21F of the interposer 20I. That is, in the interposer substrate 2 1, a plurality of cavity portions 4 O A are formed from the lower surface of the interposer substrate 2 1 F.
- the semiconductor chip 11 is bonded to the top surface of the 4OA, so that a plurality of semiconductor chips 11 are arranged in the interposer 20I. This Therefore, as shown in FIG. 17, the semiconductor chip 11 is hidden by the top plate 42 of the interposer substrate 21, and is invisible from outside the semiconductor device 10 I.
- each semiconductor chip 11 is fixed to the interposer base material 21F by joining the back surface portion 11a thereof to the cavity portion 40A. Further, the semiconductor chip 11 and the interposer substrate 21F are joined by using the micro-substrate surface joining method as in the above-described embodiments.
- the plurality of semiconductor chips 11 are simultaneously and collectively joined to the interposer base 21 F. That is, the plurality of semiconductor chips 11 are joined to the interposer substrate 21F by a so-called badge process. Thereby, the bonding process of the semiconductor chip 11 to the interposer substrate 21F can be efficiently performed.
- the materials to be bonded are desirably the same or the same type.
- silicon or glass is used as the material of the interposer substrate 21F.
- the semiconductor device 10 J according to the tenth embodiment shown in FIG. 18 has a cavity portion 40 B formed from the lower surface of the interposer substrate 21 G and a semiconductor chip of the top plate portion 42.
- An opening 43 is formed at a predetermined portion facing 11. Things.
- the outer peripheral edge of the opening 43 of the top plate 42 is bonded to the back surface 11a of the semiconductor chip 11 by the surface of the fine base material.
- the back surface 11 a of the semiconductor chip 11 is configured to be exposed to the outside.
- the heat generated in the semiconductor chip 11 can be efficiently dissipated, and the semiconductor chip 11 can be reliably prevented from malfunctioning or being damaged by the heat.
- the semiconductor device 1 OK according to the first embodiment shown in FIG. 19 has a cavity portion 40 B formed from the lower surface of the interposer substrate 21 G and an opening of the top plate portion 42.
- the adhesive 44 is provided except for the position where the semiconductor chip 11 and the semiconductor chip 11 are provided.
- the semiconductor device 10 K according to the present embodiment is similar to the semiconductor device 10 J according to the first embodiment shown in FIG. 18 in that the top plate portion 42 of the interposer substrate 21 G is used.
- An opening 43 is formed at a position facing the back surface 11 a of the semiconductor chip 11, thereby improving the heat radiation efficiency of the semiconductor chip 11.
- the heat dissipation efficiency is improved by forming the openings 43, the junction area between the top plate 42 and the semiconductor chip 11 is reduced, and the semiconductor device shown in FIG.
- the bonding strength of the semiconductor chip 11 to the interposer substrate 21 G is lower than that of 10 J.
- the adhesive agent 44 is provided in the cavity portion 40B.
- the adhesive 44 is, for example, a thermosetting resin, and is selected to have a strength capable of protecting the semiconductor chip 11 after being cured. Therefore, according to the semiconductor device 1OK according to the present embodiment, the mechanical strength of the semiconductor chip 11 with respect to the interposer substrate 21G is increased while the heat radiation efficiency of the semiconductor chip 11 is maintained high. be able to.
- the semiconductor device 1OL according to the 12th embodiment shown in FIG. 20 has a plurality of cavity portions 40B formed on the interposer substrate 21H from the upper surface.
- the through hole 31D is formed in the bottom plate portion 45 of the portion 40B.
- the insulating film 15 of the semiconductor chip 11 is fixed to the interposer substrate 21H by bonding the insulating film 15 of the semiconductor chip 11 to the edge of the bottom plate 45 where the through hole 31D is formed.
- the post electrode 22A is configured to extend to the lower surface side of the interposer substrate 21H via the through hole 31D.
- the depth of the cavity portion 40 C is set to be substantially equal to the thickness of the semiconductor chip 11. Therefore, in a state where the semiconductor chip 11 is bonded to the interposer base 21 H, the semiconductor chip 11 is located inside the interposer base 21 H. This makes it possible to reduce the amount of the semiconductor chip 11 and the insulating layers 25 and 26 protruding from the interposer substrate 21H, and to reduce the thickness of the semiconductor device 10L.
- Figure 21 shows the first
- FIG. 22 is a cross-sectional view of the semiconductor device 1 OM according to the thirteenth embodiment.
- FIG. 22 is a perspective view of the semiconductor device 1 OM according to the thirteenth embodiment.
- FIG. 23 is a cross-sectional view of the semiconductor device 1ON according to the 14th embodiment.
- Each of the semiconductor devices 1 OM and 1 ON shown in FIGS. 21 to 23 has a bonding auxiliary member 2 to increase the bonding strength of the semiconductor chip 11 to the interposers 20 G and 2 OH. 7 is provided.
- the semiconductor device 1 OM according to the thirteenth embodiment shown in FIGS. 21 and 22 is provided with a joining auxiliary member 27 in the semiconductor device 1 OL according to the first embodiment shown in FIG. 20. It is a thing. Specifically, a configuration in which a joining auxiliary member 27 is provided between the upper surface of the bottom plate portion 45 in the cavity portion 4 OC and the outer peripheral side surface of the semiconductor chip 11 is provided. Therefore, as shown in FIG. 22, when the semiconductor device 1 OM is viewed from the outside, the joining auxiliary member 27 is exposed from the cavity portion 40 C at the outer peripheral position of the semiconductor chip 11.
- the semiconductor device 1 OM according to the fourteenth embodiment shown in FIG. 23 is different from the semiconductor device 10 J according to the tenth embodiment shown in FIG. Things. Specifically, the upper and lower surfaces of the top plate part 42 in the cavity part 4 OC and the half The structure is such that a joining auxiliary member 27 is provided between the outer peripheral side surface of the conductor chip 11 and the back surface 11a. Therefore, even with the semiconductor devices 10 M and 1 ON according to the thirteenth and fourteenth embodiments, the semiconductor chip 11 and the interposer base materials 21 G and 2 are maintained while keeping the heat radiation efficiency of the semiconductor chip 11 high. The mechanical strength with 1H can be increased.
- Figure 24 shows the
- FIG. 15 is a cross-sectional view showing a semiconductor device 1 OP as a 15th embodiment
- FIG. 25 is a perspective view of the semiconductor device 1 OP
- FIG. 26 is a sectional view showing a semiconductor device 1 OQ according to the 16th embodiment
- FIG. 27 is a sectional view showing a semiconductor device 1 OR according to the 17th embodiment.
- Each of the semiconductor devices 1 OP 1 OR shown in FIGS. 24 to 27 is sealed in the interposer base materials 21 G, 21 H and 122 so as to seal the semiconductor chip 11. It is characterized in that resin 46 A and 46 B are provided.
- the semiconductor device 1 OP shown in FIG. 24 has a structure in which the semiconductor chip 11 is joined to the cavity 40 D formed on the interposer substrate 21 I, and then the cavity 40 D and the semiconductor chip 11 are connected to each other.
- the sealing resin 46 A is disposed in the space between the two.
- the sealing resin 46A is obtained by mixing silicon as a filler into a resin (for example, an epoxy resin) serving as a base material. It is also desirable to improve the heat dissipation by using a resin having a high thermal conductivity as the base material.
- a screen printing method can be used as a specific method for introducing the sealing resin 46 A into the space between the cavity 40 D and the semiconductor chip 11.
- this screen printing method it is possible to perform screen printing using a squeegee on the upper portion of the interposer substrate 21 I directly bonded to the semiconductor chip 11 without using a screen.
- this method no screen is required, so that the process of disposing the sealing resin 46A can be simplified.
- the semiconductor chip 11 is provided with the interposer by disposing the sealing resin 46A at the space between the cavity 40D and the semiconductor chip 11.
- the base material 21 I is fixed in a state of being sealed with a sealing resin 46 A.
- the semiconductor chip 11 can be reliably protected, and the bonding assist member 27 (see FIGS. 21 and 23) and the adhesive 44 (see FIG. 19) can be provided in the same manner.
- the mounting strength of the semiconductor chip 11 on the interposer substrate 21 I can be increased.
- the sealing resin 46A a resin in which silicon is mixed as a filler into a resin serving as a base material (for example, an epoxy resin) is used. That is, the sealing resin 46A has a configuration in which a filler of the same material as the interposer base material 21I is mixed. As a result, the difference in thermal expansion between the sealing resin 46 A and the interposer substrate 21 I can be reduced, and the semiconductor device 10 P can be prevented from warping even when the sealing resin 46 A is provided. can do.
- a resin in which silicon is mixed as a filler into a resin serving as a base material for example, an epoxy resin
- the semiconductor devices 1 O Q and 10 R shown in FIGS. 26 and 27 are characterized in that a sealing resin 46 B is formed by using a molding method.
- the sealing resin 46 B is formed by using the molding method, the sealing formed is different from the method of forming the sealing resin 46 A by the screen printing method shown in FIGS. The degree of freedom of the shape of the resin 46 A can be increased.
- the sealing resin 46B is molded using a mold (not shown), the sealing of an arbitrary shape can be performed by appropriately selecting the cavity formed in the mold. It becomes possible to form the resin 46B.
- the sealing resin 46B is formed to be higher than the surfaces of the interposer base materials 21G and 21H by the height ⁇ .
- the sealing resin 46B can be formed regardless of the interposer base materials 21G and 21H, the mechanical strength of the semiconductor devices 1OQ and 1OR can be reduced. It can be set arbitrarily. Further, by forming the sealing resin 46 B by using a molding method, a plurality of sealing resins 46 B can be collectively formed, and the production efficiency can be improved. In addition, by mixing a filler of the same material as the interposer base materials 21 G and 21 H into the sealing resin 46 B, the semiconductor device 1 OQ and 1 OR are prevented from warping. It is good.
- Figure 28 shows the
- FIG. 29 is a sectional view showing an electronic device 1 OS according to the 18th embodiment
- FIG. 29 is a sectional view showing an electronic device 1 OT according to the 19th embodiment
- FIG. 30 is an electronic device 1 according to the 20th embodiment. It is sectional drawing which shows OU.
- the semiconductor chip 11 was used as an electronic element mounted on the interposer base 21A20I.
- the eighteenth to twentieth embodiments are characterized in that a chip component 5OA5OC which is a passive element is used as an electronic element.
- the chip components 5OA5OC are specifically chip capacitors, chip resistors, and the like.
- Each of the chip components 5OA5OC is obtained by forming a resistor or a capacitor on a substrate such as a wafer and then dicing the substrate into individual pieces.
- each chip component 50A 50C is configured to have various shapes by appropriately selecting the blade angle and the blade width of the dicing blade and using half dicing as a dicing method. ing.
- the chip component 5OA is a bevel cut type
- the chip component 50B is a step cut type
- the chip component 5OC is a V-shaped cut type.
- the electronic device 1OS shown in Fig. 28 has a chip component 5OA5OC mounted in a through hole 51 formed in an interposer base 21J.
- the chip component 5OA5OC and the interposer base material 21J are bonded by using the fine base material surface bonding method as in the above-described embodiments.
- the post electrode 22A is formed directly on the electrode 13 of the chip components 5OA to 5OC.
- the bonding strength is smaller than the bonding force using the bump and the underfill resin.
- the chip component 50A5OC and the interposer substrate 21J can be joined with a strong joining force. Thereby, the reliability of the electronic device 1 OS can be improved.
- the electronic device 1OT shown in Fig. 29 is characterized in that a flat substrate made of silicon is used as the interposer base 21K constituting the interposer 20T.
- the chip component 5OA5OC has a configuration in which the back surface is directly bonded to the interposer substrate 21K by a fine substrate surface bonding.
- a cavity 40E is formed on an interposer base material 21L constituting an interposer 20U, and a chip component 5OA5OC is joined in the cavity 40E.
- the chip component 5OA5OC has a configuration in which the back surface is directly bonded to the interposer base material 21L by the fine base material surface bonding.
- the entire back surface of the chip component 50 ⁇ 5 OC is bonded to the interposer base materials 21 K and 21 L on the small base surface, so that the bonding strength is improved. And the reliability of the electronic devices 1 OT and 1 OU can be improved.
- FIG. 31 is a sectional view showing an electronic device 1 OV according to a twenty-first embodiment
- FIG. 32 is a sectional view taken along line AA in FIG.
- the semiconductor chip 11 is used as an electronic element mounted on the interposer 2 OA-20 R
- the passive element is used as an electronic element mounted on the interposer 2 OS 2 OU.
- the example using the chip component 5OA5OC was shown.
- the electronic device 1 OV according to the present embodiment is characterized in that an optical device is used as an electronic element.
- an optical device is used as an electronic element.
- a light emitting element 55 and a light receiving element 56 are used as optical devices, and these are optically connected by an optical waveguide.
- the electronic device 1 O V is roughly composed of an interposer 20 V, a light emitting element 55, a light receiving element 56, and the like.
- the interposer 20 V has a structure in which a first clad layer 52, a second clad layer 53, and a core layer 54 are laminated on an interposer base material 21 M.
- the interposer substrate 21M is a silicon substrate, and the surface on which the first cladding layer 52 is disposed is a smooth surface (mirror surface).
- the wiring pattern is formed at a predetermined position on the interposer substrate 21M by using a well-known thin film forming technique.
- the first cladding layer 52 is made of a glass material, and a groove for forming the core layer 54 is formed at a predetermined position in a predetermined pattern (see FIG. 32). A core layer 54 is formed in this groove. On the surface of the first cladding layer 52 on which the core layer 54 is formed, a second cladding layer 53 is further formed. The second cladding layer 53 is formed of the same glass material as the first cladding layer 52.
- the refractive index n 1 of the core layer 54 is set to be larger than the refractive index n 2 of the first clad layer 52 and the second clad layer 53 (n 1> n 2). For this reason, when light travels to the core layer 54, the light is repeatedly totally reflected in the core layer 54. Thus, the light that has entered the core layer 54 is transmitted through the core layer 54.
- openings 62 and 63 are formed at predetermined positions.
- the opening 62 is provided at the position where the light emitting element 55 is provided, and the opening 63 is provided at the position where the light receiving element 56 is formed.
- the mirrored interposer substrate 2 1 M Is exposed.
- the light emitting element 55 is inserted into the opening 62 formed in the interposer substrate 21M.
- the light receiving element 56 is also inserted into the opening 63 formed in the interposer substrate 21M.
- the surface of the light emitting element 55 and the light receiving element 56 facing the interposer substrate 21M is a smooth surface (mirror surface).
- the light-emitting element 55 and the light-receiving element 56 are pressed against the interposer substrate 21M in a vacuum environment so that the smooth surfaces come into close contact with each other. Therefore, the light emitting element 55, the light receiving element 56, and the interposer substrate 21M are integrated and firmly joined without using an adhesive or the like (a method of joining the surfaces of the fine base material).
- the light emitting element 55 is a photodiode, and a light emitting section 55A for emitting light is formed on a side portion.
- the left end in the drawing of the core layer 54 exposed to the opening 62 by forming the opening 62 is configured to face the light emitting portion 55 A formed in the light emitting element 55. I have. Therefore, the light generated by the light emitting element 55 enters the core layer 54 located between the openings 62 and 63.
- an electrode 55B is formed on the lower surface in the figure.
- a boost electrode 60 is provided upright on the electrode 55B, and an external connection terminal 24 is formed at a lower end thereof.
- the light receiving element 56 is disposed in the opening 63 as described above.
- Reference numeral 56 denotes a photodiode.
- the light receiving portion 56A is formed on the lower surface in the figure
- the electrode 56B is formed on the upper surface in the figure.
- the shape of the opening 63 is larger than that of the light receiving element 56.
- a reflecting member 57 is arranged together with 56.
- the reflecting member 57 has a reflecting surface 57 A, and the reflecting surface 57 A is configured to face the right end in the drawing of the core layer 54 exposed to the opening 63.
- the angle of the reflecting surface 57 A is configured such that light emitted from the light emitting element 55 and emitted from the right end of the core layer 54 irradiates the light receiving section 56 A of the light receiving element 56. .
- the light emitting element 55 and the light receiving element 56 arranged in the interposer 2 OV Has a configuration in which the first and second cladding layers 52 and 53 functioning as waveguides are optically connected to each other by the core layer 54, and the signal between the light emitting element 55 and the light receiving element 56 is Transmission becomes possible.
- highly accurate signal transmission without loss can be performed within the electronic device 1 OV, and the reliability of the electronic device 1 OV can be improved.
- the electrode 56B formed on the light receiving element 56 is made of an interposer base material.
- a through electrode 61 is formed at a position facing the right end of the wiring pattern 59 of each of the cladding layers 52, 53 and the core layer 54 in the drawing.
- the upper end of the through electrode 61 in the figure is electrically connected to the wiring pattern 59, and the lower end is formed with an external connection terminal 24.
- An insulating layer 58 is formed on the opening 62 on the side of the light emitting element 55 on which the electrode 55 B is formed and on the surface of the second cladding layer 53 to protect the interposer 2 OV. It has been done.
- the light emitting element 55 and the light receiving element 56 are made into a solid form by directly contacting the interposer 20 V (interposer base material 21 M).
- interposer 20 V interposer base material 21 M
- both can be joined with a stronger joining force.
- bumps (solder) and underfill resin are not used, unnecessary materials such as solder, flux, and resin are formed at a portion where the light emitting element 55 and the light receiving element 56 are optically connected to the core layer 54. Intrusion and contamination can be prevented, and optical signals can be transmitted and received reliably. Therefore, the reliability of the electronic device 1 OV can also be improved.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/577,017 US7847411B2 (en) | 2003-11-07 | 2004-11-01 | Electronic device and method of manufacturing the same |
EP04799450.4A EP1681717B1 (en) | 2003-11-07 | 2004-11-01 | Electronic device |
JP2005515288A JP4351214B2 (ja) | 2003-11-07 | 2004-11-01 | 電子装置及びその製造方法 |
TW093133798A TW200524101A (en) | 2003-11-07 | 2004-11-05 | Electronic device and process for manufacturing same |
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JP2003377892 | 2003-11-07 | ||
JP2003-377892 | 2003-11-07 | ||
JP2004130217 | 2004-04-26 | ||
JP2004-130217 | 2004-04-26 |
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PCT/JP2004/016244 WO2005045925A1 (ja) | 2003-11-07 | 2004-11-01 | 電子装置及びその製造方法 |
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US (1) | US7847411B2 (ja) |
EP (1) | EP1681717B1 (ja) |
JP (1) | JP4351214B2 (ja) |
KR (1) | KR100784454B1 (ja) |
TW (1) | TW200524101A (ja) |
WO (1) | WO2005045925A1 (ja) |
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JP2007059452A (ja) * | 2005-08-22 | 2007-03-08 | Shinko Electric Ind Co Ltd | インターポーザ及びその製造方法ならびに電子装置 |
JP2007170830A (ja) * | 2005-12-19 | 2007-07-05 | Fujikura Ltd | 半導体圧力センサ及びその製造方法 |
JP2007184426A (ja) * | 2006-01-06 | 2007-07-19 | Shinko Electric Ind Co Ltd | 半導体装置の製造方法 |
JP2008270443A (ja) * | 2007-04-19 | 2008-11-06 | Fujikura Ltd | 積層配線基板及びその製造方法 |
JP2012146898A (ja) * | 2011-01-14 | 2012-08-02 | Toshiba Corp | 発光装置、発光モジュール、発光装置の製造方法 |
JP2014038910A (ja) * | 2012-08-13 | 2014-02-27 | Toshiba Corp | 光電気集積パッケージモジュール |
JPWO2018198490A1 (ja) * | 2017-04-28 | 2020-03-26 | 国立研究開発法人産業技術総合研究所 | 光電子集積回路及びコンピューティング装置 |
JP2020087981A (ja) * | 2018-11-15 | 2020-06-04 | 有限会社アイピーシステムズ | ビア配線形成用基板及びビア配線形成用基板の製造方法並びに半導体装置実装部品の製造方法 |
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JPWO2018198490A1 (ja) * | 2017-04-28 | 2020-03-26 | 国立研究開発法人産業技術総合研究所 | 光電子集積回路及びコンピューティング装置 |
JP7145515B2 (ja) | 2017-04-28 | 2022-10-03 | 国立研究開発法人産業技術総合研究所 | 光電子集積回路及びコンピューティング装置 |
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JP2020087981A (ja) * | 2018-11-15 | 2020-06-04 | 有限会社アイピーシステムズ | ビア配線形成用基板及びビア配線形成用基板の製造方法並びに半導体装置実装部品の製造方法 |
KR20210084119A (ko) * | 2019-12-27 | 2021-07-07 | 웨이브로드 주식회사 | 반도체 발광소자 |
KR102301877B1 (ko) | 2019-12-27 | 2021-09-15 | 웨이브로드 주식회사 | 반도체 발광소자 |
WO2022209438A1 (ja) * | 2021-03-29 | 2022-10-06 | 株式会社村田製作所 | 電子部品パッケージ、電子部品ユニットおよび電子部品パッケージの製造方法 |
Also Published As
Publication number | Publication date |
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JP4351214B2 (ja) | 2009-10-28 |
EP1681717A1 (en) | 2006-07-19 |
KR20060080236A (ko) | 2006-07-07 |
KR100784454B1 (ko) | 2007-12-11 |
TW200524101A (en) | 2005-07-16 |
JPWO2005045925A1 (ja) | 2007-05-24 |
US7847411B2 (en) | 2010-12-07 |
EP1681717A4 (en) | 2009-07-29 |
US20070158832A1 (en) | 2007-07-12 |
EP1681717B1 (en) | 2017-03-29 |
TWI353045B (ja) | 2011-11-21 |
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