WO2006120886A1 - 素子部を有する半導体装置およびその製造方法 - Google Patents
素子部を有する半導体装置およびその製造方法 Download PDFInfo
- Publication number
- WO2006120886A1 WO2006120886A1 PCT/JP2006/308605 JP2006308605W WO2006120886A1 WO 2006120886 A1 WO2006120886 A1 WO 2006120886A1 JP 2006308605 W JP2006308605 W JP 2006308605W WO 2006120886 A1 WO2006120886 A1 WO 2006120886A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- semiconductor substrate
- semiconductor
- substrate
- semiconductor device
- acceleration sensor
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 262
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 18
- 239000000758 substrate Substances 0.000 claims abstract description 233
- 239000004020 conductor Substances 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 9
- 229910018125 Al-Si Inorganic materials 0.000 claims description 7
- 229910018520 Al—Si Inorganic materials 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 description 95
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 33
- 229910052710 silicon Inorganic materials 0.000 description 33
- 239000010703 silicon Substances 0.000 description 33
- 239000007795 chemical reaction product Substances 0.000 description 27
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 12
- 238000005530 etching Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000003746 solid phase reaction Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000652704 Balta Species 0.000 description 1
- 229910017758 Cu-Si Inorganic materials 0.000 description 1
- 229910017931 Cu—Si Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up
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- G—PHYSICS
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0802—Details
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0808—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining in-plane movement of the mass, i.e. movement of the mass in the plane of the substrate
- G01P2015/0811—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining in-plane movement of the mass, i.e. movement of the mass in the plane of the substrate for one single degree of freedom of movement of the mass
- G01P2015/0814—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining in-plane movement of the mass, i.e. movement of the mass in the plane of the substrate for one single degree of freedom of movement of the mass for translational movement of the mass, e.g. shuttle type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present invention relates to a semiconductor device having an element portion and a manufacturing method thereof.
- connection member made of a conductive material for electrical connection to the outside, it is usually formed by a bonding wire formed by metal wire bonding or ball bonding. Used bumps or the like are used.
- a conductive film for example, a metal film such as aluminum, is used on the surface of the semiconductor substrate.
- the electrode pad to be formed was patterned by a photolithographic method or the like.
- an electrode pad for connecting a connection member such as a bonding wire to the semiconductor substrate is required separately, which causes an increase in cost.
- the present disclosure has been made in view of the above problems, and an object thereof is to provide a semiconductor device having an element portion. Furthermore, it aims at providing the method of manufacturing the semiconductor device which has an element part.
- a semiconductor device is electrically connected to a semiconductor substrate, an element portion provided on the semiconductor substrate, and the semiconductor substrate, and electrically connected to the outside.
- a connection member made of a conductive material. The connecting member is in direct contact with the surface of the semiconductor substrate, and the connecting member and the semiconductor substrate are electrically connected.
- connection member and the semiconductor substrate are electrically connected by bringing the connection member into direct contact with the surface of the semiconductor substrate, the connection member is connected to the semiconductor substrate as in the prior art. Even without providing an electrode pad, it is possible to appropriately ensure electrical connection between the connecting member and the semiconductor substrate.
- the method of manufacturing a semiconductor device includes a step of preparing a semiconductor substrate, a step of providing an element portion on the semiconductor substrate, and an electrical connection for electrical connection with the outside. Electrically connecting a connecting member made of a conductive material to a semiconductor substrate.
- the connecting step includes a step of bringing the connecting member into direct contact with the surface of the semiconductor substrate, and a heat treatment performed on the contact portion, whereby the conductive material constituting the connecting member at the contact portion and the semiconductor constituting the semiconductor substrate And forming a reaction product portion.
- FIG. 1 is a diagram showing a schematic plan configuration of a semiconductor device according to a first embodiment of the present invention.
- FIG. 2A is a plan view of the acceleration sensor element in the semiconductor device in FIG. 1, and FIG. 2B is a schematic cross-sectional view of FIG. 2A.
- FIG. 3 is a sectional view of the acceleration sensor element taken along line III-III in FIG. 2A.
- FIG. 4 is a cross-sectional view of the acceleration sensor element taken along line IV-IV in FIG. 2A.
- FIG. 5 is a circuit diagram showing an example of a detection circuit in the semiconductor device shown in FIG.
- 6A to 6C are cross-sectional views showing a method of manufacturing the semiconductor device shown in FIG.
- FIG. 7A is a plan view of an acceleration sensor element in a semiconductor device as a comparative example of the first embodiment
- FIG. 7B is a schematic cross-sectional view of FIG. 7A.
- FIG. 8A is a plan view of an acceleration sensor element in a semiconductor device as a first modification of the embodiment
- FIG. 8B is a schematic cross-sectional view of FIG. 8A.
- FIG. 9A is a plan view of an acceleration sensor element in a semiconductor device as a second modification of the embodiment
- FIG. 9B is a schematic cross-sectional view of FIG. 9A.
- FIG. 10A is a plan view of an acceleration sensor element in a semiconductor device as a third modification of the embodiment
- FIG. 10B is a schematic cross-sectional view of FIG. 10A.
- FIG. 11 is a plan view of an acceleration sensor element in a semiconductor device using a lead frame as a second embodiment of the present invention.
- FIG. 12A is a plan view of a semiconductor device using a pressure sensor as a third embodiment of the present invention
- FIG. 12B is a schematic cross-sectional view of FIG. 12A.
- FIG. 13A is a plan view of a semiconductor device as a first modification of the embodiment
- FIG. 13B is a schematic cross-sectional view of FIG. 13A.
- FIG. 14A is a plan view of a semiconductor device using MOS as a fourth embodiment of the present invention
- FIG. 14B is a schematic cross-sectional view taken along line XIV-XIV in FIG. 14A.
- the present disclosure relates to a semiconductor device in which an element portion such as a movable body, a piezoresistive element, a Hall element, or a light emitting element is formed on a semiconductor substrate.
- FIG. 1 is a diagram showing a schematic plan configuration of an acceleration sensor S1 as a semiconductor device according to the first embodiment of the present invention.
- 2A is a schematic plan view showing a more detailed configuration of the acceleration sensor element 100 in the present acceleration sensor S1
- FIG. 2B is a schematic cross-sectional view of the acceleration sensor element 100 shown in FIG. 2A.
- FIG. 2B shows a model cross section in which the cross section including the movable body 20 in the acceleration sensor element 100 of FIG. 2A and the cross section in the vicinity of the connection member 200 are combined.
- FIGS. 3 and 4 are schematic plan views showing a state in which the bonding wire 200 is not connected to the acceleration sensor element 100, that is, a single unit configuration of the acceleration sensor element 100.
- FIG. FIG. 4 is a schematic cross-sectional view of the acceleration sensor element 100 taken along line III-III of FIG. 4, and
- FIG. 4 is a schematic cross-sectional view of the acceleration sensor element 100 taken along line IV-IV in FIG. 2A.
- the acceleration sensor S1 is not limited in its application, but is applied, for example, as an acceleration sensor that is attached to a vehicle to be measured and detects the acceleration generated according to the driving state of the vehicle. can do.
- the acceleration sensor S1 of the present embodiment is a conductive material for electrically connecting to the acceleration sensor element 100 in which the movable body 20 as the element portion is provided on the semiconductor substrate 10. It is constituted by electrically connecting bonding wires 200 as connecting members made of a conductive material.
- the acceleration sensor element 100 may be directly attached to the object to be measured.
- the acceleration sensor S1 is mounted on a package (not shown). It shall be attached to the object to be measured.
- the mounting form of the acceleration sensor S1 to the object to be measured is not limited to this.
- the acceleration sensor element 100 may be mounted in the package together with the acceleration sensor element 100 alone or a circuit chip. It is. Then, through this package, the acceleration sensor element 100 is attached to an appropriate position of the object to be measured.
- the mounting form of the acceleration sensor element 100 through such a package is generally performed conventionally.
- the above-mentioned package is not particularly limited, but it can be made to have strength such as ceramic resin.
- the package is configured as a laminated substrate in which a plurality of ceramic layers such as alumina are laminated, for example, and the surface of each ceramic layer and the inside of a through hole formed in each ceramic layer.
- the wiring can be formed.
- the wiring of the package or the circuit chip in the package and the semiconductor substrate 10 constituting the acceleration sensor element 100 are connected by the bonding wire 200, whereby the acceleration sensor element 100 and the package or the circuit are connected.
- the chip is electrically connected.
- the acceleration sensor element 100 is formed by applying a known micromachine force to the semiconductor substrate 10.
- the semiconductor substrate 10 constituting the acceleration sensor element 100 includes a first silicon substrate 11 as a first semiconductor layer and a second semiconductor layer as shown in FIG. 3 and FIG. This is a rectangular SOI (silicon on insulator) substrate 10 having an oxide film 13 as an insulating layer between the second silicon substrate 12.
- SOI silicon on insulator
- the first silicon substrate 11 including the oxide film 13 is configured as a support substrate. That is, one surface of the first silicon substrate 11 is configured as an oxide film 13, and the second silicon substrate 12 as a semiconductor layer is provided on the one surface side of the first silicon substrate 11 as the support substrate. It has become.
- a pattern defined by the groove 14, that is, a movable body 20 as a movable part and a fixed part 30, 40 A beam structure having a comb-like shape is formed.
- a portion of the second silicon substrate 12 corresponding to the region where the beam structures 20 to 40 are formed that is, a portion indicated by a broken-line rectangle 15 in Fig. 2A is separated from the oxide film 13. position (See Fig. 3 and Fig. 4).
- the portion of the rectangle 15 is referred to as a thin portion 15 in the second silicon substrate 12.
- this thin portion 15 is formed on one surface of the first silicon substrate 11 that is the support substrate, that is, the oxide film 1.
- the movable body 20 as the thin portion 15 is integrally connected to the anchor portions 23a and 23b via both end force panel portions 22 of the elongated rectangular weight portion 21. ing.
- these anchor portions 23 a and 23 b are fixed to the oxide film 13 and supported on the first silicon substrate 11 as a support substrate via the oxide film 13. Yes.
- the weight portion 21 and the panel portion 22 that are the thin-walled portions 15 are in a state of being separated from the oxide film 13.
- the panel section 22 has a rectangular frame shape in which two parallel beams are connected at both ends thereof, and is orthogonal to the longitudinal direction of the two beams. It has a panel function that displaces in the direction.
- the panel unit 22 displaces the weight unit 21 in the direction of the arrow X in the horizontal direction of the substrate surface when the acceleration including the component in the direction of the arrow X in FIG. Depending on the situation, it will be restored to its original state!
- the movable body 20 connected to the SOI substrate 10 through such a panel portion 22 responds to the application of acceleration on the oxide film 13, that is, the first silicon substrate 11 that is the support substrate. It can be displaced in the direction of arrow X in the horizontal direction of the board.
- the movable body 20 includes a comb-like movable electrode 24 as the thin portion 15.
- the movable electrode 24 is a plurality of beams having a beam shape extending in opposite directions from both side surfaces of the weight portion 21 in a direction orthogonal to the longitudinal direction (arrow X direction) of the weight portion 21.
- a plurality of movable electrodes 24 are arranged in a comb-teeth shape along the arrangement direction with the longitudinal direction of the weight part 21 (displacement direction of the panel part 22 and the arrow X direction) being the arrangement direction. It is a thing.
- Each movable electrode 24 protrude from the left and right sides of the weight portion 21 by four.
- Each movable electrode 24 is formed in a beam shape having a rectangular cross section, and is separated from the oxide film 13.
- each movable electrode 24 is integrally formed with the panel portion 22 and the weight portion 21, thereby being displaced together with the panel portion 22 and the weight portion 21 in the arrow X direction in the horizontal direction of the substrate surface. It is possible.
- the fixing portions 30 and 40 are another pair of opposing side portions in which the anchor portions 23a and 23b are not supported among the outer peripheral portions of the thin portion 15.
- the oxide film 13 is fixed on the outer periphery of the substrate.
- the fixing portions 30 and 40 are supported on the first silicon substrate 11 via the oxide film 13.
- the fixed portion 30 located on the left side of the weight portion 21 is configured with a left fixed electrode 31 and a left fixed electrode wiring portion 32.
- the fixed portion 40 located on the right side of the weight portion 21 is composed of a right fixed electrode 40 and a right fixed electrode wiring portion 42.
- each fixed electrode 31, 41 is a thin-walled portion 15, and a plurality of comb electrodes are arranged so as to engage with a gap between comb teeth in the movable electrode 24. It is a thing.
- a left fixed electrode 31 is provided on the upper side along the arrow X direction with respect to each movable electrode 24, while the weight portion 21 On the right side, a right fixed electrode 41 is provided on the lower side of each movable electrode 24 along the arrow X direction.
- the fixed electrodes 31 and 41 are arranged so as to face the respective movable electrodes 24 in the horizontal direction of the substrate surface, and the side surfaces (that is, the detection surfaces) of the movable electrodes 24 are arranged at each facing interval. ) And the side surfaces (that is, the detection surfaces) of the fixed electrodes 31 and 41, a detection interval for detecting capacitance is formed.
- the left fixed electrode 31 and the right fixed electrode 41 are electrically independent from each other.
- the fixed electrodes 31 and 41 are formed in the shape of a beam having a rectangular cross section that extends substantially parallel to the movable electrode 24.
- the left fixed electrode 31 and the right fixed electrode 41 are respectively connected via the oxide film 13.
- the fixed electrode wiring portions 32 and 42 fixed to the first silicon substrate 11 are supported in a cantilevered manner.
- the fixed electrodes 31 and 41 are separated from the oxide film 13.
- the left fixed electrode 31 and the right fixed electrode 41 are configured such that a plurality of respective electrodes are grouped into electrically common wiring portions 32 and 42. ing.
- predetermined positions of the left fixed electrode wiring portion 32 and the right fixed electrode wiring portion 42 are configured as connection portions 30a and 40a, which are parts to which the bonding wire 200 is connected.
- the left fixed electrode wiring portion 32 and the right fixed electrode wiring portion 42 are drawn out to the periphery of the semiconductor substrate 10, respectively, and the left fixed electrode connection portion 30a and A connecting portion 40a for the right fixed electrode is formed.
- the movable electrode wiring portion 25 is formed in a state of being integrally coupled to one anchor portion 23b, and a predetermined position on the wiring portion 25 is a portion to which the bonding wire 200 is connected. It is configured as a connection portion, that is, a connection portion 25a for the movable electrode.
- the connecting portion to which the bonding wire 200 is connected is actually not limited to the connecting portions 25a, 30a, 40a shown in FIG. 2A. There are several.
- the connection form of the bonding wire 200 is, for example, as shown in FIG.
- the acceleration sensor element 100 is mounted on the package alone or together with a circuit chip or the like, and the semiconductor substrate 10 in the wiring of the rack or the circuit chip in the package and the acceleration sensor element 100. Are connected by the bonding wire 200, whereby the electrical connection between the acceleration sensor element 100 and the package or the electrical connection between the acceleration sensor element 100 and the circuit chip is performed.
- the bonding wire 200 is made of aluminum (A1) force! [0055]
- the bonding wire 200 as a connecting member is in direct contact with the surface of the semiconductor substrate 10, and the bonding wire 200 is formed at this contact portion.
- the bonding wire 200 and the semiconductor substrate 10 are electrically connected by forming a reaction product 300 formed by a reaction between the conductive material and the semiconductor constituting the semiconductor substrate 10.
- the metal constituting the bonding wire 200 as the connecting member is Are
- the semiconductor constituting the semiconductor substrate 10 is silicon (Si)
- the reaction product 300 is A1.
- acceleration is detected based on a change in electrostatic capacitance between the movable electrode 24 and the fixed electrodes 31 and 41 accompanying application of acceleration.
- the side surfaces (that is, the detection surfaces) of the fixed electrodes 31 and 41 are provided so as to face the side surfaces (that is, the detection surfaces) of the individual movable electrodes 24, respectively.
- a detection interval for detecting the capacitance is formed in each opposing interval on the side surfaces of both electrodes.
- a first capacitance CS is detected as a detection capacitance between the left fixed electrode 31 and the movable electrode 24.
- a second capacitor CS2 is formed as a detection capacitor in the interval between the right fixed electrode 41 and the movable electrode 24.
- the acceleration sensor element 100 when acceleration is applied in the direction of arrow X in FIG. 2 in the horizontal direction of the substrate surface, the entire movable body 20 excluding the anchor portion is integrated by the panel function of the panel portion 22. Accordingly, the capacitors CS1 and CS2 change according to the displacement of the movable electrode 24 in the direction of the arrow X.
- the acceleration in the arrow X direction can be detected based on the change in the differential capacitance (CS1 ⁇ CS2) by the movable electrode 24 and the fixed electrodes 31 and 41. Specifically, this capacity difference (C
- a signal based on (S1-CS2) is output from the acceleration sensor element 100 as an output signal. This signal is processed by the circuit chip or an external circuit provided in the package, and is finally output.
- FIG. 5 is a circuit diagram showing an example of a detection circuit 400 for detecting acceleration in the acceleration sensor S1 of the present embodiment.
- a switched capacitor circuit (SC circuit) 410 includes a capacitor 411 having a capacitance Cf, a switch 412 and a differential amplifier circuit 413, and an input capacitance difference (CS1-CS2). ) Is converted to voltage.
- the carrier wave 1 having the amplitude Vcc is input from the connection portion 30a for the left fixed electrode, and the phase of the carrier wave 1 is 180 degrees from the connection portion 40a for the right fixed electrode.
- the applied acceleration in the arrow X direction is output as a voltage value V0 as shown in Equation 1 below.
- Such an acceleration sensor element 100 can be manufactured as follows, for example. 6A to 6C are process diagrams showing a method of manufacturing the acceleration sensor S1 of the present embodiment shown in FIG.
- the above-mentioned SOI substrate 10 as a semiconductor substrate is prepared, and P (phosphorus) or B (boron) is formed on the surface of the SOI substrate 10, that is, the surface of the second silicon substrate 12, for example. Ron) and the like are implanted, diffused and doped. As a result, the resistivity is reduced on the surface of the second silicon substrate 12, and conductivity is imparted.
- a mask having a shape corresponding to the beam structure is formed on the second silicon substrate (SOI layer) 12 of the SOI substrate 10 by using a photolithography technique. Then, for example CF
- the patterns of the beam structures 20 to 40 are collectively formed.
- the etching further proceeds, and the second silicon substrate 12 is further etched by side etching.
- the thin portion 15 is formed.
- the acceleration sensor element 100 in which the released movable body 20 as the element portion is provided on the SOI substrate 10 can be manufactured.
- acceleration sensor element 100 is manufactured using SOI substrate 10 as a normal wafer, next, acceleration sensor element 100 is divided into chips. Then, the acceleration sensor element 100 is fixed to the package via an adhesive or the like, and the bonding wire 200 is formed by performing wire bonding.
- the surface of the SOI substrate 10, that is, the surface of the second silicon substrate 12 is brought into direct contact, and in this state, the contact portion between the bonding wire 200 and the SOI substrate 10 is subjected to heat treatment.
- the bonding wire 200 is brought into contact with the contact portion, that is, the connection portions 25a, 30a, 40a, etc. on the surface of the SOI substrate 10 by a normal wire bonding method. As shown in Fig. 6B, this contact is performed by irradiating laser R locally.
- the force with which the connecting member is the bonding wire 200 may be performed simultaneously with the wire bonding on the surface of the SOI substrate 10 or the wire bonding may be performed. You can run it after!
- the laser R irradiation may be performed at the same time when the bonding wire 200 is brought into contact with the SOI substrate 10 or the connection by wire bonding between the SOI substrate 10 and the package or circuit chip is completed. It may be done later.
- a reaction product 300 between the metal constituting the bonding wire 200 and the semiconductor constituting the SOI substrate 10 is formed at the contact portion between the bonding wire 200 and the SOI substrate 10.
- A1 constituting the bonding wire 200 and Si constituting the SOI substrate 10 and heating by irradiation of the force laser R cause a solid-phase reaction, and the A1-Si alloying force as a reaction product is also generated.
- An Al—Si reaction layer 300 is formed.
- the formation of the element portion 20 on the SOI substrate 10 as the semiconductor substrate 10 and the connection of the bonding wire 200 as the connection member are completed, and then the above-described package Sealing is performed.
- the acceleration sensor S1 of the present embodiment shown in FIG. 1 is completed.
- the connection member 200 is in direct contact with the surface of the semiconductor substrate 10, and the conductive material constituting the connection member 200 is in contact with the semiconductor device S1.
- a semiconductor device S 1 is provided in which the connection member 200 and the semiconductor substrate 10 are electrically connected to each other by forming a reaction product 300 that is reacted with a semiconductor constituting the semiconductor substrate 10.
- connection member 200 is brought into direct contact with the surface of the semiconductor substrate 10, and the connection member 200 is formed across the contact portion. Since the connection product 200 and the semiconductor substrate 10 are electrically connected by forming a reaction product 300 between the material and the semiconductor constituting the semiconductor substrate 10, it is connected to the semiconductor substrate as in the past. Even if the electrode pad for the member is not provided, the connection between the connecting member 200 and the semiconductor substrate 10 can be appropriately ensured.
- FIG. 7A is a schematic plan view of an acceleration sensor element in an acceleration sensor as a comparative example
- FIG. 7B is a schematic cross-sectional view of FIG. 7A.
- 7A and 7B are prototypes made by the present inventor, and electrode pads P are formed by A1 or the like on the connection portions 25a, 30a, and 40a of the connection member 200 in the semiconductor substrate 10. .
- this electrode pad P is unnecessary.
- the semiconductor substrate 10, the element portion 20 provided on the semiconductor substrate 10, and the connection member 200 made of a conductive material for electrical connection with the outside are provided.
- the semiconductor device S 1 provided an inexpensive configuration can be realized by eliminating the need for an electrode pad for a connection member.
- the element unit 20 is the movable body 20 that can be displaced with respect to the semiconductor substrate 10 with the application of acceleration, which is a mechanical quantity, and thus, as a semiconductor device.
- Acceleration sensor S1 is provided.
- the bonding wire 200 is adopted as the connecting member.
- a reaction product is obtained by using A1 as a conductive material constituting the bonding wire 200 as a connecting member and Si as a semiconductor constituting the semiconductor substrate 10.
- A1 a conductive material constituting the bonding wire 200
- Si a semiconductor constituting the semiconductor substrate 10.
- the Al—Si reaction layer 300 is also formed as A1—S.
- the semiconductor substrate 10 is prepared, the element portion 20 is provided on the semiconductor substrate 10, and the electrical connection with the outside is provided.
- a method for manufacturing a semiconductor device in which a connection member 200 made of a conductive material for electrical connection is electrically connected to the semiconductor substrate 10, in a state where the connection member 200 is in direct contact with the surface of the semiconductor substrate 10,
- a semiconductor characterized in that a reaction product 300 is formed by reacting a conductive material constituting the connection member 200 and a semiconductor constituting the semiconductor substrate 10 at the contact portion by heat-treating the contact portion.
- a method of manufacturing apparatus S1 is provided.
- the heat treatment is performed locally with respect to the contact portion between the connection member 200 and the semiconductor substrate 10. It is also one of the features that it is performed by irradiating laser R to the surface.
- the connecting member is the bonding wire 200
- the heat treatment is performed simultaneously with the wire bonding to the surface of the semiconductor substrate 10. Execution is also a feature.
- the connecting member is the bonding wire 200
- the heat treatment is performed on the surface of the semiconductor substrate 10.
- One of the features is that it is performed after wire bonding is performed on the surface.
- FIG. 8A is a schematic plan view of an acceleration sensor element 100 in an acceleration sensor as a first modified example
- FIG. 8B is a schematic cross-sectional view of FIG. 8A
- the cross-sectional view of the drawings showing the following modifications is a model view in which the cross section including the movable body 20 in the acceleration sensor element 100 and the cross section in the vicinity of the connecting member 200 are combined, as in FIG. 2B. A cross section is shown.
- the connecting member 200 is in direct contact with the surface of the semiconductor substrate 10, and the reaction product 300 is formed at this contact portion, whereby the connecting member 200, the semiconductor substrate 10, and Although they are electrically connected, there may be no reaction products as in the first modification! /.
- FIG. 9A is a schematic plan view of an acceleration sensor element 100 in an acceleration sensor which is a semiconductor device as a second modification of the present embodiment
- FIG. 9B is a schematic cross-sectional view of FIG. 9A. is there.
- the bonding wire 200 is in direct contact with the surface of the semiconductor substrate 10, and the conductive portion such as A1 that forms the bonding wire 200 at this contact portion.
- the bonding wire 200 and the semiconductor substrate 10 are electrically connected to each other by forming a reaction product 300 having a force such as an Al--Si reaction layer between the conductive material and the semiconductor such as Si constituting the semiconductor substrate 10. ing.
- the oxide film 13 and the second silicon substrate 12 are disposed around the first silicon substrate 11. Is removed by etching or the like, and the peripheral portion of the first silicon substrate 11 is exposed. The exposed portion force of the first silicon substrate 11 is in contact with the bonding wire 200. It is configured as a connectable connection.
- the surface to which the bonding wire 200 is connected is not the same plane but has a step.
- the bonding wire 200 is brought into direct contact with the surface of the first silicon substrate 11 and contacted with the first silicon substrate 11.
- the electrical connection of the bonding wire 200 can be easily performed, and the potential of the substrate It becomes possible to take.
- FIG. 10A is a schematic plan view of an acceleration sensor element 100 in an acceleration sensor as a third modification
- FIG. 10B is a schematic cross-sectional view of FIG. 10A.
- the one shown in FIG. 10 is the one shown in FIG. 9 above without any reaction product. And it is needless to say that the effects of the above-described embodiment can be exhibited also in each of the above modifications.
- a conductive material constituting the bonding wire 200 enters the inside of the semiconductor substrate 10 in a wedge shape.
- the conductive material constituting the bonding wire 200 and the semiconductor constituting the semiconductor substrate 10 cause a solid phase reaction, and Al—Si A reactive material such as an alloy is formed, whereby the bonding wire 200 and the semiconductor substrate 10 are electrically connected.
- the force semiconductor substrate is shown as an example in which the SOI substrate 10 is used as the semiconductor substrate 10 and the bonding wire 200 mainly having A1 force is used as the connecting member 200.
- the combination of the semiconductor constituting 10 and the conductive material constituting the bonding wire 200 is not limited to the above example.
- the combination of the semiconductor and the conductive material is sufficient if electrical connection between the two is ensured.
- a solid-phase reaction occurs and the reaction product can be formed.
- the semiconductor constituting the semiconductor substrate 10 may be Balta monocrystalline Si, polycrystalline Si, or amorphous Si! /, Or a compound semiconductor such as GaAs or GaN.
- the doping of the impurity into the semiconductor substrate 10 may be of any conductivity type as long as it can be electrically connected to the conductive material constituting the connection member 200.
- A1 is described as an example of the connecting member.
- a metal such as gold or copper, or the like
- An alloy, an organic conductor, a semiconductor, or the like may be used.
- the heat treatment conditions are such that the above solid-phase reaction occurs at the interface between the semiconductor substrate 10 and the connection member.
- connection portion between the semiconductor substrate 10 and the bonding wire 200 is locally heated.
- a semiconductor substrate 10 is provided with a heater or the like to provide a semiconductor substrate.
- a method of heating 10 as a whole may also be used. Also in this case, this heat treatment can be performed simultaneously with the wire bonding on the surface of the semiconductor substrate 10 or after the wire bonding.
- connecting member 200 is not limited to the bonding wire 200.
- connection member bumps formed on the surface of the semiconductor substrate 10 by ball bonding or the like can be applied as the connection member.
- the lead frame may be brought into direct contact with the semiconductor substrate 10 and not electrically connected via a bonding wire or the like.
- FIG. 11 is a schematic plan view of an acceleration sensor element in an acceleration sensor when a lead frame 210 as a connection member is used as a second embodiment.
- a lead frame 210 is disposed around the acceleration sensor element 100, and the lead frame 210 and the semiconductor substrate 10 constituting the acceleration sensor element 100 are electrically connected.
- the lead frame 210 is made of an ordinary conductive lead frame material, and is made of, for example, copper or 42 alloy.
- a reaction product 300 is formed by reacting the conductive material constituting the lead frame 210 with the semiconductor constituting the semiconductor substrate 10.
- connection of the lead frame 210 of this example can be performed by laser irradiation according to the manufacturing method shown in the above embodiment.
- the reaction product 300 in this example can be made of, for example, Cu—Si or Fe—Si. It should be noted that the product shown in FIG. 11 is free of reaction products.
- connection member 200 is bonded in a state where the semiconductor substrate 10 is divided into chips.
- the present invention is applicable to bonding in the substrate state, that is, the wafer state. Can be applied.
- the surface of the semiconductor substrate including the connection portion is irradiated with laser before bonding the connection member, thereby forming irregularities on the surface of the semiconductor substrate. Increasing the contact area with the connecting member is effective.
- the release portion of the movable body 20 is formed by forming the thin portion 15 on the second silicon substrate 12 while leaving the oxide film 13 in the entire area of the SOI substrate 10.
- the movable body 20 may be released by performing etching using the oxide film 13 as a sacrificial layer in the SOI substrate 10, as is well known.
- the thickness of the second silicon substrate 12 is substantially uniform over the entire region, and the oxide film 13 is removed at the portion of the rectangle 15 shown in FIG. As a result, the movable substrate 20 is also released from the supporting substrate force.
- the surface processing type acceleration sensor that is, the one obtained by releasing the movable body 20 as the element portion by etching the surface side force of the semiconductor substrate 10 has been described.
- Force The semiconductor substrate 10 may be a back surface acceleration sensor that releases the movable body by etching from the back surface of the semiconductor substrate 10 in the above example, that is, the first silicon substrate 11.
- an example of an acceleration sensor has been described on the assumption that the element unit is a movable body that can be displaced with respect to the semiconductor substrate in accordance with application of a mechanical quantity.
- a sensor that has a movable body that detects vibration by Coriolis when an angular velocity as a mechanical quantity is applied to drive the movable body that is, an angular velocity sensor (gyro sensor).
- an angular velocity sensor (gyro sensor).
- an element portion is provided on a semiconductor substrate, and this element portion is formed by carrying out a calorie on the semiconductor substrate itself by a semiconductor process. For example, it does not matter if a separate part as the element part is fixed on the semiconductor substrate by bonding or the like.
- the present invention is effective in a configuration that does not require wiring with a metal film on a semiconductor substrate, and is applicable to a semiconductor substrate that includes only a movable body sensor such as the acceleration sensor or the gyro sensor described above.
- the formed element portion includes a piezoresistive element made of a diffusion layer, a Hall element, or a light emitting element such as a light emitting diode or a laser, and also applies to other semiconductor devices such as solar cells. be able to.
- the element portions 20 are separated from each other by the separation by the grooves 14, but the separation of the element portions is not limited to such groove separation.
- a method of electrically separating by a PN junction and a method of separating by an insulating film can be applied.
- FIGS. 12A and 12B show an example in which a pressure sensor is used as the semiconductor device of the present invention and the element portion is separated by PN junction.
- 12A is a schematic plan view of the pressure sensor
- FIG. 12B is a schematic cross-sectional view of FIG. 12A.
- the gauge 50 and the wiring 51 constitute an element part, and the gauge 50 and the wiring 51 are hatched for identification.
- a gauge 50 and a wiring 51 as an element portion are provided on a semiconductor substrate 10 made of Si or the like, and a bonding wire 200 as a connecting member is electrically connected to the wiring 51. It consists of The bonding wire 200 enables the pressure sensor to electrically communicate with an external circuit.
- a diaphragm 52 formed by etching or the like is formed in the pressure sensor, and a gauge 50 and a wiring 51 are formed on the diaphragm 52. These gauges 50 and the wiring 51 constitute a bridge circuit. When the pressure is applied, the diaphragm 52 is distorted, and the applied pressure is detected based on the change in the output of the bridge circuit.
- Such a pressure sensor is a force that is of a general semiconductor diaphragm type.
- the semiconductor substrate 10 is N-type silicon, and the gauge 50 and the wiring 51 are injected with B (boron). It is a formed P-type diffusion layer.
- the bonding wire 200 is electrically connected to the wiring 51, and a reaction product 300 made of, for example, Al—SU is formed.
- a reaction product 300 made of, for example, Al—SU is formed.
- an N + layer 53 is formed on the semiconductor substrate 10, and a bonding wire 200 is similarly connected to the N + layer 53 so that the semiconductor substrate 10 can be maintained at a reference potential.
- connection member 200 and the semiconductor can be provided without providing the electrode pads for the connection member on the semiconductor substrate, as in the above embodiment.
- Conductivity with the substrate 10 can be appropriately secured.
- FIGS. 12A and 12B are diagrams showing the configuration of a pressure sensor in which the reaction product 300 is not present in the one shown in FIGS. 12A and 12B.
- FIG. 13A is a schematic plan view of the pressure sensor
- FIG. FIG. 13B is a schematic sectional view of FIG. 13A.
- the semiconductor device of the present invention may be a MOS transistor or a BIP (bipolar transistor) other than those described above. Even such a thing is effective for analog applications and power applications.
- FIGS. 14A and 14B An example using a general MOS transistor is shown in FIGS. 14A and 14B.
- FIG. 14A is a schematic plan view of the MOS transistor
- FIG. 14B is a schematic cross-sectional view taken along line XIV—XIV in FIG. 14A.
- a gate 60, a gate wiring 61, a source 62, and a drain 63 are formed, and these portions 60 to 63 are configured as element portions.
- the gate 60 and the gate wiring 61 are made of polysilicon, and the source 62 and the drain 63 are made of an N + layer.
- the source 62 and the drain 63 are made of an N + layer.
- an insulating film 64 such as a reconic acid film.
- the bonding wire 20 is connected to the gate wiring 61, the source 62, and the drain 63.
- reaction product 300 such as A1-SU is formed.
- connection between the connection member 200 and the semiconductor substrate 10 can be appropriately ensured without providing the electrode pad for the connection member on the semiconductor substrate. it can. Also in this case, the reaction product 300 is absent.
- the present invention includes a semiconductor substrate, an element portion provided on the semiconductor substrate, and a conductive material that is electrically connected to the semiconductor substrate and electrically connected to the outside.
- the main part is that the connecting member and the semiconductor substrate are electrically connected to each other by bringing the connecting member into direct contact with the surface of the semiconductor substrate in a semiconductor device including the connecting member.
- connection by forming a reaction product by reacting a conductive material constituting the connection member and a semiconductor constituting the semiconductor substrate at the contact portion by heat treatment or the like.
- the second main part is to electrically connect the member and the semiconductor substrate, and the design of the other parts can be changed as appropriate.
- the present disclosure includes the following aspects.
- the semiconductor device is electrically connected to the semiconductor substrate, the element portion provided on the semiconductor substrate, and the semiconductor substrate, and is electrically connected to the outside.
- a connection member made of a conductive material. The connecting member is in direct contact with the surface of the semiconductor substrate, and the connecting member and the semiconductor substrate are electrically connected.
- connection member and the semiconductor substrate are electrically connected by bringing the connection member into direct contact with the surface of the semiconductor substrate, the connection member is connected to the semiconductor substrate as in the conventional case. Even without providing an electrode pad, it is possible to appropriately ensure electrical connection between the connecting member and the semiconductor substrate.
- the semiconductor device may further include a reaction generation unit.
- the reaction generation unit is disposed at a contact portion between the semiconductor substrate and the connection member, and the reaction generation unit is formed of a material obtained by a reaction between a conductive material constituting the connection member and a semiconductor constituting the semiconductor substrate. .
- the connecting member may be a bonding wire! /.
- the conductive material constituting the connection member may be A1
- the semiconductor constituting the semiconductor substrate may be Si
- the material constituting the reaction generation unit may be A1-Si.
- the element unit may include a movable body that can be displaced with respect to the semiconductor substrate in accordance with application of a mechanical quantity.
- the element portion can be a movable body that can be displaced with respect to the semiconductor substrate in accordance with the application of the mechanical quantity, and a mode suitable for a mechanical quantity sensor such as an acceleration sensor or an angular velocity sensor can be realized.
- the method for manufacturing a semiconductor device includes a step of preparing a semiconductor substrate, a step of providing an element portion on the semiconductor substrate, and a conductive for electrically connecting to the outside. Electrically connecting a connecting member made of a conductive material to a semiconductor substrate.
- the connecting step includes a step of bringing the connecting member into direct contact with the surface of the semiconductor substrate, and a heat treatment performed on the contact portion, whereby the conductive material constituting the connecting member at the contact portion and the semiconductor constituting the semiconductor substrate And forming a reaction product portion.
- the heat treatment may be performed by locally irradiating the contact portion with a laser.
- the connecting member is a bonding wire, and the heat treatment may be performed simultaneously with the wire bonding to the surface of the semiconductor substrate!
- the connecting member may be a bonding wire, and the heat treatment may be performed after wire bonding is performed on the surface of the semiconductor substrate.
- the conductive material constituting the connecting member is A1, and the semiconductor substrate is constructed.
- the semiconductor to be formed may be Si, and the material constituting the reaction generation unit may be Al—Si.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Pressure Sensors (AREA)
- Wire Bonding (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/884,275 US20090194827A1 (en) | 2005-05-09 | 2006-04-25 | Semiconductor Device Having Element Portion and Method of Producing the Same |
DE112006001152T DE112006001152B8 (de) | 2005-05-09 | 2006-04-25 | Verfahren zur Fertigung einer Halbleitervorrichtung mit Elementabschnitt |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-136094 | 2005-05-09 | ||
JP2005136094 | 2005-05-09 | ||
JP2006-114641 | 2006-04-18 | ||
JP2006114641A JP4710700B2 (ja) | 2005-05-09 | 2006-04-18 | 半導体装置およびその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006120886A1 true WO2006120886A1 (ja) | 2006-11-16 |
Family
ID=37396396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/308605 WO2006120886A1 (ja) | 2005-05-09 | 2006-04-25 | 素子部を有する半導体装置およびその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090194827A1 (ja) |
JP (1) | JP4710700B2 (ja) |
DE (1) | DE112006001152B8 (ja) |
WO (1) | WO2006120886A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4737140B2 (ja) * | 2006-10-20 | 2011-07-27 | セイコーエプソン株式会社 | Memsデバイスおよびその製造方法 |
US7737514B1 (en) * | 2008-02-21 | 2010-06-15 | Yee-Chung Fu | MEMS pressure sensor using area-change capacitive technique |
JP2010141112A (ja) * | 2008-12-11 | 2010-06-24 | Sharp Corp | 半導体装置および半導体装置の製造方法 |
US8334159B1 (en) | 2009-03-30 | 2012-12-18 | Advanced Numicro Systems, Inc. | MEMS pressure sensor using capacitive technique |
JP2015010871A (ja) * | 2013-06-27 | 2015-01-19 | 株式会社デンソー | 物理量センサ |
US9613843B2 (en) * | 2014-10-13 | 2017-04-04 | General Electric Company | Power overlay structure having wirebonds and method of manufacturing same |
US10879449B2 (en) * | 2017-05-11 | 2020-12-29 | Nihat Okulan | Semiconductor strain gauge and method of manufacturing same |
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JPS5454571A (en) * | 1977-10-11 | 1979-04-28 | Toshiba Corp | Wire bonding method of semiconductor device |
JPS6153737A (ja) * | 1984-08-24 | 1986-03-17 | Hitachi Ltd | 電子装置の組立法及び組立装置 |
JPH07120496A (ja) * | 1993-10-25 | 1995-05-12 | Hitachi Ltd | 加速度センサ |
JPH07135234A (ja) * | 1993-11-09 | 1995-05-23 | Hitachi Ltd | パワー半導体モジュール |
JP2001044450A (ja) * | 1999-07-26 | 2001-02-16 | Denso Corp | 半導体力学量センサ |
JP2003156507A (ja) * | 2001-11-22 | 2003-05-30 | Matsushita Electric Works Ltd | 半導体加速度センサの封止方法 |
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BE559732A (ja) * | 1956-10-31 | 1900-01-01 | ||
US3702787A (en) * | 1970-11-02 | 1972-11-14 | Motorola Inc | Method of forming ohmic contact for semiconducting devices |
US3891822A (en) * | 1971-04-20 | 1975-06-24 | Unitek Corp | Pulse heated thermocompression bonding apparatus |
US4534811A (en) * | 1983-12-30 | 1985-08-13 | International Business Machines Corporation | Apparatus for thermo bonding surfaces |
US4845354A (en) * | 1988-03-08 | 1989-07-04 | International Business Machines Corporation | Process control for laser wire bonding |
US5610335A (en) * | 1993-05-26 | 1997-03-11 | Cornell Research Foundation | Microelectromechanical lateral accelerometer |
US5563343A (en) * | 1993-05-26 | 1996-10-08 | Cornell Research Foundation, Inc. | Microelectromechanical lateral accelerometer |
US6149190A (en) * | 1993-05-26 | 2000-11-21 | Kionix, Inc. | Micromechanical accelerometer for automotive applications |
US6199874B1 (en) * | 1993-05-26 | 2001-03-13 | Cornell Research Foundation Inc. | Microelectromechanical accelerometer for automotive applications |
JP2002134560A (ja) * | 2000-10-26 | 2002-05-10 | Fuji Electric Co Ltd | 半導体装置 |
JP2003248016A (ja) * | 2002-02-21 | 2003-09-05 | Denso Corp | 容量式加速度センサ |
-
2006
- 2006-04-18 JP JP2006114641A patent/JP4710700B2/ja not_active Expired - Fee Related
- 2006-04-25 US US11/884,275 patent/US20090194827A1/en not_active Abandoned
- 2006-04-25 WO PCT/JP2006/308605 patent/WO2006120886A1/ja active Application Filing
- 2006-04-25 DE DE112006001152T patent/DE112006001152B8/de not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5454571A (en) * | 1977-10-11 | 1979-04-28 | Toshiba Corp | Wire bonding method of semiconductor device |
JPS6153737A (ja) * | 1984-08-24 | 1986-03-17 | Hitachi Ltd | 電子装置の組立法及び組立装置 |
JPH07120496A (ja) * | 1993-10-25 | 1995-05-12 | Hitachi Ltd | 加速度センサ |
JPH07135234A (ja) * | 1993-11-09 | 1995-05-23 | Hitachi Ltd | パワー半導体モジュール |
JP2001044450A (ja) * | 1999-07-26 | 2001-02-16 | Denso Corp | 半導体力学量センサ |
JP2003156507A (ja) * | 2001-11-22 | 2003-05-30 | Matsushita Electric Works Ltd | 半導体加速度センサの封止方法 |
Also Published As
Publication number | Publication date |
---|---|
DE112006001152T5 (de) | 2008-03-20 |
DE112006001152B4 (de) | 2011-09-15 |
JP4710700B2 (ja) | 2011-06-29 |
US20090194827A1 (en) | 2009-08-06 |
DE112006001152B8 (de) | 2011-12-15 |
JP2006344934A (ja) | 2006-12-21 |
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