WO2007017980A1 - 電子部品の製造方法及び電子部品 - Google Patents
電子部品の製造方法及び電子部品 Download PDFInfo
- Publication number
- WO2007017980A1 WO2007017980A1 PCT/JP2006/309724 JP2006309724W WO2007017980A1 WO 2007017980 A1 WO2007017980 A1 WO 2007017980A1 JP 2006309724 W JP2006309724 W JP 2006309724W WO 2007017980 A1 WO2007017980 A1 WO 2007017980A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case plate
- electronic component
- hole
- element substrate
- electrode
- Prior art date
Links
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Classifications
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- B81—MICROSTRUCTURAL TECHNOLOGY
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- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/0032—Packages or encapsulation
- B81B7/0045—Packages or encapsulation for reducing stress inside of the package structure
- B81B7/0048—Packages or encapsulation for reducing stress inside of the package structure between the MEMS die and the substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00015—Manufacture or treatment of devices or systems in or on a substrate for manufacturing microsystems
- B81C1/00261—Processes for packaging MEMS devices
- B81C1/00301—Connecting electric signal lines from the MEMS device with external electrical signal lines, e.g. through vias
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- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
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- G01P15/0802—Details
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- 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
- G01P15/12—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 alteration of electrical resistance
- G01P15/123—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 alteration of electrical resistance by piezo-resistive elements, e.g. semiconductor strain gauges
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
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- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4853—Connection or disconnection of other leads to or from a metallisation, e.g. pins, wires, bumps
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- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
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- 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
- G01P2015/0822—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 out-of-plane movement of the mass
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- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
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- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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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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- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
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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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- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T29/49133—Assembling to base an electrical component, e.g., capacitor, etc. with component orienting
- Y10T29/49135—Assembling to base an electrical component, e.g., capacitor, etc. with component orienting and shaping, e.g., cutting or bending, etc.
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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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- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
Definitions
- the present invention relates to an electronic component having a laminate in which an element substrate that functions as an electronic component element is bonded to a case plate using an adhesive, and more specifically, an electrode on the element substrate and a case
- the present invention relates to an electronic component manufacturing method and an electronic component having an improved electrical connection structure with an electrode on a plate and an electrical connection portion with the outside of the electronic component.
- Patent Document 1 discloses a semiconductor device 101 shown in FIG.
- the semiconductor device 101 has a base substrate 102.
- a semiconductor substrate 103 on which a semiconductor sensor is configured is fixed on the base substrate 102.
- the semiconductor substrate 103 has a movable part including the electrode 103a.
- the sensor part having the force electrode 103a shown schematically is a movable part. Therefore, in order to provide the gap A that faces the movable part of the semiconductor substrate 103, a recess is provided on the one surface 103b side of the semiconductor substrate 103.
- the semiconductor substrate 103 is fixed to the base substrate 102 with the surface 103b provided with the recesses as the lower surface.
- the electrodes 103 c and 103 d force provided on the semiconductor substrate 103 are electrically connected to the base substrate 102.
- the poles 102a and 102b are joined and electrically connected.
- the electrodes 102a and 102b are electrically connected to electrodes 102c and 102d provided on the lower surface of the base substrate 102 through through-hole electrodes provided in the base substrate 102.
- Solder bumps 104 and 105 are joined to the electrodes 102c and 102d.
- the side surface and the upper surface of the semiconductor substrate 103 are sealed with a mold resin 106. That is, the semiconductor substrate 103 is hermetically sealed with the base substrate 102 and the mold resin 106.
- the solder bumps 104 and 105 can be used to mount the electrode land on the mounting substrate. Therefore, the semiconductor device 101 can be mounted on the mounting substrate with a small mounting space.
- Patent Document 1 Japanese Patent Laid-Open No. 2004-340730
- the semiconductor substrate 103 having a movable part is hermetically sealed with the base substrate 102 and the mold resin 105, and
- the bumps 104 and 105 can be used to mount on a substrate by a flip chip bonding method.
- the bonding strength by the solder bumps 104 and 105 is relatively weak. Therefore, an adhesive such as epoxy resin called underfill has to be filled between the mounting substrate and the base substrate 102 to increase the adhesive strength.
- the gap force between the mounting substrate and the base substrate 102 is satisfied by the above-described underfill, which is not limited to the solder bumps 104 and 105. Therefore, when stress is applied to the mounting substrate, only the solder bumps 104 and 105 It was easy to be transmitted to the base substrate 102 and eventually the semiconductor substrate 103 via the underfill. Therefore, a malfunction may occur in the semiconductor sensor formed on the semiconductor substrate 103 due to the stress.
- the object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to suppress the transmission of stress even after being mounted on a mounting board or the like, and to be surface-mounted in a relatively small mounting space.
- Another object of the present invention is to provide an electronic component manufacturing method and an electronic component that have a simple structure and can increase the insulation resistance between a plurality of external connection terminals.
- a functional unit for causing an electronic component to function and the functional unit are electrically connected to the outside.
- the method further includes a step of roughening at least a portion of the case plate on which the electrode film is formed before the electrode film is formed. ing.
- the etching is performed by dry etching.
- a polyimide-based adhesive is used as the adhesive.
- a laminate of the element substrate and the case plate is diced so as to divide the hole, and the hole is formed on a side surface of the protrusion.
- the step of laminating a second case plate on a surface of the element substrate opposite to the side to which the case plate is bonded is provided. Furthermore, it is provided.
- the second case plate is bonded to the element substrate with an adhesive.
- the electronic component according to the present invention is an element provided with a functional unit that functions as an electronic component element.
- An external connection electrode electrically connected to the outside is formed on a surface of the element substrate on which the case plate is laminated, and at least a part of the external connection electrode is formed on the case plate.
- the adhesive layer is not disposed at the bottom so as to expose the electrode layer, and the electrode film is disposed on the outer surface of the case plate opposite to the side laminated with the element substrate.
- a functional unit for functioning as an electronic component and an external connection electrode formed on one side for electrically connecting the functional unit to the outside are provided.
- sandblasting is performed.
- a hole is formed so as to expose the adhesive layer in a portion where a part of the external connection electrode is present below.
- the adhesive layer has a high resistance to sandblasting
- sandblasting is performed so that the adhesive layer is not completely removed and a hole is formed in the case plate. Sandblasting can be applied so that the bottom is exposed.
- the adhesive part which is exposed in the hole and cannot be removed by sandblasting is removed by etching. In this way, the adhesive layer at the bottom is removed, whereby a part of the external connection electrode on the element substrate is exposed to the hole.
- an electrode film is formed so as to extend from the outer surface of the case plate into the hole and to be electrically connected to the external connection electrode on the element substrate exposed by the removal of the adhesive portion.
- the functional part of the element substrate can be electrically connected to the electrode film provided on the outer surface of the case plate.
- a part of the side surface is formed on the outer surface of the case plate by the inner peripheral surface of the hole, and the protrusion is formed so that the electrode film reaches the tip surface. Mounting the electronic component according to the present invention using the electrode film portion on the tip surface It can be electrically connected to an electrode land or the like of the substrate.
- the present invention it is possible to obtain an electronic component that can be surface-mounted so that the protrusion is in contact with the electrode land on the element substrate.
- the protrusion is formed integrally with the case plate by processing the case plate, the case plate force is not easily released. Therefore, underfill can be omitted. Therefore, no stress is transmitted via the underfill, and the stress from the mounting board side is transmitted only by the protrusions. Therefore, the transmission of stress on the mounting substrate side force to the functional part of the element substrate can be suppressed.
- the sandblasting process a sandplast process is performed so that the adhesive layer is not completely removed. Therefore, since the element substrate is not sandblasted, there is no possibility that the hole reaches the element substrate. Therefore, it is difficult for the electrode film extending from the outer surface of the case plate to the inside of the hole to reach the side surface of the element substrate.
- the element substrate is a semiconductor substrate and the electrode is formed at a desired position on the side surface of the semiconductor substrate, the insulation resistance varies, the bridge balance is lost, and the offset voltage varies. If the absolute value of the resistance changes, the sensitivity to acceleration may fluctuate and the characteristics may deteriorate. On the other hand, according to the present invention, such fluctuations in characteristics are difficult to occur.
- the method further includes a step of roughening at least a portion of the case plate where the electrode film is formed before the electrode film is formed, the adhesion strength of the electrode film to the surface of the case plate may be increased. I'll do it.
- the etching is performed by dry etching
- the above-mentioned adhesive is formed while constituting the external connection electrodes and functional parts provided on the element substrate and preventing the corrosion of the desired part. Partial removal of the layer can be performed.
- the polyimide-based adhesive has excellent sand blast resistance, so that the adhesive must not be completely removed during sandblasting. Conditions can be set easily.
- the laminated body of the element substrate and the case plate is diced so as to divide the hole, and the concave portion formed by a part of the inner peripheral surface of the hole is formed on the side surface of the protrusion.
- an electronic component in which a recess is provided on the outer surface of the protrusion and an electrode film is formed in the recess.
- the portion provided with the protrusion is a portion to be joined to an electrode land such as a mounting substrate, and the protrusion is positioned in the vicinity of the outer edge of the electronic component. Can be provided.
- the second case plate When the second case plate is bonded to the element substrate with an adhesive, the second case plate can be easily laminated and bonded to the element substrate.
- the case board is bonded to the element substrate via the adhesive layer, and the sand blast resistance of the case board is lower than the sand blast resistance of the adhesive layer.
- the method for manufacturing an electronic component of the present invention when a hole is formed by sandblasting, sandblasting can be easily performed so that the adhesive layer remains at the bottom of the hole. Then, according to the present invention, only the adhesive portion exposed at the bottom of the hole can be easily removed by etching. Therefore, when the electrode film is formed on the outer surface of the case plate, the electrode film is formed so as to reach the bottom of the hole, thereby exposing the bottom of the hole. An electrode film can be joined to the external connection electrode.
- an electrode film extending from the tip end surface of the protrusion to the external connection electrode is formed. It is possible to provide a CSP-type electronic component that can be surface-mounted on a substrate or the like and that is hardly affected by the stress of the mounting substrate side force.
- FIG. 1 (a) to (e) are partial cutaway cross-sectional views for explaining a manufacturing process of the semiconductor sensor device of the first embodiment.
- FIG. 2 is a perspective view showing an appearance of a semiconductor sensor device according to an embodiment of an electronic component of the present invention.
- FIG. 3 is an exploded perspective view of the semiconductor sensor device of the embodiment shown in FIG.
- FIG. 4 is a longitudinal sectional view of the semiconductor sensor device of the embodiment shown in FIG.
- FIG. 5 is a partially cutaway front sectional view for explaining a state in which the semiconductor sensor device of the embodiment shown in FIG. 1 is mounted on a mounting board.
- FIG. 6 is a plan view of a semiconductor substrate used in the semiconductor sensor device of the embodiment shown in FIG.
- FIG. 7 is a partially cutaway plan view schematically showing the main part of the semiconductor substrate shown in FIG. 4.
- FIG. 8 is a diagram showing an X-axis direction acceleration detection circuit configured on the semiconductor substrate shown in FIG. 4.
- FIG. 9 is a schematic perspective view for explaining the displacement state of the acceleration sensor provided on the semiconductor substrate shown in FIG. 4.
- FIG. 10 is a front sectional view showing an example of a conventional semiconductor device.
- FIG. 2 a semiconductor sensor device shown in a perspective view in FIG. 2 is manufactured as an electronic component.
- FIG. 3 is an exploded perspective view of the semiconductor sensor device shown in FIG. Prior to describing the manufacturing method of the present embodiment, the schematic structure of the semiconductor sensor device will be described first.
- the semiconductor sensor device 1 includes a semiconductor substrate 2 as an element substrate, a case plate 3 laminated on one side of the semiconductor substrate 2, and a second case plate 4 formed on the other side of the semiconductor substrate 2. Yes.
- the semiconductor substrate 2 has an acceleration sensor as a semiconductor sensor having a movable part.
- This acceleration sensor can detect accelerations in three directions, the X axis, the Y axis, and the Z axis, which are orthogonal to each other.
- the direction perpendicular to the rectangular semiconductor substrate 2 is taken as the Z axis
- the long side direction is taken as the Y axis direction
- the short side direction is taken as the X axis direction.
- the semiconductor substrate 2 thus has an upper surface and a lower surface parallel to the XY plane.
- the structure of the semiconductor sensor in the semiconductor substrate 2 is not particularly limited! Therefore, the configuration of the acceleration sensor in the semiconductor substrate 2 will be briefly described later.
- the case plate 3 is bonded to the semiconductor substrate 2 with an adhesive layer 5.
- an adhesive having higher sandblast resistance than the case substrate 3 is used. This is to prevent the adhesive layer 5 from being completely removed at the bottom of the hole when a hole is made in the case substrate 3 by a sandblasting cache described later. That is, the adhesive layer 5 functions as a stopper when sandblasting.
- a polyimide-based adhesive or an epoxy-based adhesive layer or the like is used, and preferably, a high sandblast resistance and a polyimide-based adhesive are used.
- a recess 4 a is formed on the upper surface of the second case plate 4.
- the recess 4a is provided to form a gap so as not to hinder the movement of the movable part 2a of the acceleration sensor of the semiconductor substrate 2.
- Case plate 3 and second case plate 4 have the same planar shape as the semiconductor substrate, that is, the same rectangular plate shape.
- the case plate 3 and the second case plate 4 are made of heat-resistant glass.
- Case plates 3 and 4 are not limited to heat-resistant glass, and may be made of an appropriate synthetic material such as insulating ceramics such as alumina or synthetic resin. However, in the present invention, the case plate 3 needs to have lower sandblast resistance than the above-described adhesive layer 5.
- the case plates 3 and 4 be formed of heat-resistant glass or ceramics having excellent heat resistance.
- case plate 4 is not necessarily required to be made of a material having low sandblast resistance.
- the case plate 3 has a rectangular plate shape, but has a plurality of protrusions 3b on the surface 3a opposite to the side laminated on the semiconductor substrate 2.
- the protrusion 3b is made of the same material integrally with the case plate 3.
- the plurality of projections 3b are formed by machining a material constituting the case plate 3 as described later. Since the plurality of protrusions 3b are integrally formed of the same material as the case plate 3, it is difficult to come off the case plate 3.
- a plurality of recesses 3e are provided on the side surfaces 3c and 3d extending to the pair of long sides of the case plate 3.
- the plurality of recesses 3e are provided corresponding to the sides of the plurality of protrusions 3b, respectively.
- a terminal electrode 7 is formed on the tip surface of the protrusion 3b.
- a connection electrode 8 is formed in the recess 3e. The connection electrode 8 is connected to the terminal electrode 7, extends into the recess 3 e through the side surface of the protrusion 3 b, and reaches the lower surface side of the case plate 3.
- a plurality of external connection electrodes 9 for electrically connecting the acceleration sensor to the outside are formed on the upper surface of the semiconductor substrate 2.
- Each external connection electrode 9 is connected to each connection electrode 8.
- the acceleration sensor is electrically connected to the terminal electrode 7 formed on the protrusion 3b of the case plate 3.
- the surface on which the terminal electrode 7 and the connection electrode 8 are formed is roughened in the surface roughness range of about # 200 to 2000, more preferably about # 600. In the case of such a rough surface, it is possible to increase the adhesion strength of the terminal electrode 7 and the connection electrode 8 to be formed.
- a semiconductor substrate 2A as an element substrate is prepared.
- the case plate 3A and the case plate 4A are stacked on top and bottom of the semiconductor substrate 2A via the adhesive layers 5 and 6, and bonded together.
- the hole 3f is formed at the portion where the external connection electrode 9 exists below by the upper surface force sandblasting method of the case plate 3A.
- the sandblast resistance of the adhesive layer 5 after curing is higher than the sandblast resistance of the case plate 3A. Therefore, sandblasting is performed so that the adhesive layer 5 is not completely removed by sandblasting at the bottom of the hole 3f. Therefore, as shown in FIG. 1 (b), the adhesive layer 5 remains at the bottom of the force hole 3f in which the hole 3f is formed by sandblasting.
- the hole 3f is tapered so that the diameter decreases from the upper surface side to the lower surface side of the case plate 3A. This is due to the fact that the hole 3f is formed by sandblasting, so that it is naturally tapered. However, the taper may not be provided in the hole 3f. However, since the taper is formed, The disconnection of the polar membrane is unlikely to occur at the upper opening edge of the hole 3f.
- the adhesive layer 5 exposed at the bottom of the hole 3f is removed by etching.
- This etching is preferably performed by dry etching or wet etching.
- Dry etching is used to prevent corrosion of the external connection electrode 9 exposed at the bottom of 3f and the semiconductor sensor as a functional part.
- the hole 3f was provided in a portion where the external connection electrode 9 was positioned below the exposed adhesive layer at the bottom. Therefore, when a part of the adhesive layer is removed by the etching, the external connection electrode 9 located below the adhesive layer 5 is exposed.
- an electrode film 7A shown in FIG. 1 (d) is formed on the upper surface of the case plate 3A.
- the electrode film 7A is formed by an appropriate method such as sputtering or vapor deposition.
- the electrode film 7A is electrically connected to the external connection electrode 9 that reaches the inside of the hole 3f from the upper surface of the case plate 3A and is exposed at the bottom of the hole 3f. Provided to be connected to each other. As described above, since the hole 3f is tapered, disconnection of the electrode film 7A hardly occurs at the upper opening edge of the hole 3f. Therefore, as described above, it is preferable that the hole 3f is provided with a taper.
- the hole 3f is further filled with a conductive adhesive or the like to reinforce the electrical connection portion and improve the reliability of the electrical connection. May be raised.
- a plating film is formed on the electrode film 7A.
- This plating film is formed by plating Sn or solder, and is formed to improve solderability when the semiconductor device of this embodiment is surface-mounted.
- the plating film does not necessarily have to be formed. For example, when mounting using a conductive paste, the plating film is not necessarily provided.
- machining such as grinding using a dicer or the like is performed to form a plurality of protrusions 3b on the upper surface of the mother laminate.
- the protrusion 3b is formed by grinding so that a plurality of protrusions 3b protruding from the upper surface of the case plate 3A remain. Therefore, The protrusion 3b is integrally formed of the same material as the case plate 3A.
- the protrusion 3b is formed so that the tip surface force of the protrusion 3b passes through the side surface and reaches the bottom of the hole 3f. ing. That is, the protrusion 3b is formed on the inner side of the portion where the hole 3f is provided.
- the inner side means that the protrusion 3b is provided inside the recess 3e opened at the outer peripheral side edge of the case plate 3. The inner side of each finally obtained semiconductor sensor device 1 is meant.
- the mother laminated body is diced to obtain individual semiconductor sensor devices 1 as shown in FIG. 1 (e) and FIG. Dicing is performed by removing a part of the laminated body along the center of the hole 3f.
- the electrode film 7A is cut by dicing, and the terminal electrode 7 and the connection electrode 8 connected to the terminal electrode 7 are formed.
- the recess 3e provided by cutting the hole 3f is disposed outside the protrusion 3b, and the connection electrode 8 is disposed in the recess 3e. That is, it is possible to easily obtain the semiconductor sensor device 1 in which the concave portion 3e is disposed on the outer side surface of the protrusion 3b.
- the sandblast resistance is relatively low, the sandblast resistance is relatively high with respect to the case plate 3, and the adhesive layer 5 is used. Therefore, when the hole 3f is formed, the sandblasting can be easily performed under the condition that the adhesive layer is not completely removed by the sandblasting. That is, the adhesive layer 5 can function as a stopper during sandblasting.
- connection electrode 8 when the connection electrode 8 reaches the side surface of the semiconductor substrate 2, an electric field may be applied to the semiconductor substrate 2 by the connection electrode 8 and the characteristics may change.
- the adhesive layer 5 functions as a stopper and the hole 3 f is formed so as not to reach the semiconductor substrate 2, the connection electrode 8 does not reach the side surface of the semiconductor substrate 2.
- the semiconductor sensor device 1 obtained by the above embodiment can be surface-mounted on a mounting board using the terminal electrode 7.
- the semiconductor sensor device 1 is turned upside down so that the terminal electrodes 7, 7 are in contact with the electrode lands 52, 53 on the mounting substrate 51. Placed on top. Then, the terminal electrodes 7 and 7 are joined to the electrode lands 52 and 53 using, for example, solders 54 and 55.
- the protrusion 3b is integrally formed of the same material as the case plate 3 as described above, the protrusion 3b does not come off from the case plate 3 even if heat is applied during solder heating. Therefore, the semiconductor sensor device 1 can be firmly bonded onto the mounting substrate 51 as shown in FIG. 5 without using an underfill. Therefore, the use of underfill can be omitted.
- the semiconductor sensor device 1 that can be mounted with sufficient bonding strength on the mounting substrate 51 with a small mounting space. Since the semiconductor sensor device 1 does not require underfill, no stress is transmitted from the mounting substrate 51 side through the underfill. Even if bending deformation occurs on the mounting board 51 side, the stress on the mounting board 51 side is transmitted to the semiconductor sensor device 1 side only through the protrusion 3b. Hard to be transmitted to the semiconductor sensor on the board 2. Therefore, even when the mounting substrate 51 side is deformed, it is possible to provide the semiconductor sensor device 1 that is unlikely to malfunction.
- FIG. 6 shows an enlarged plan view of a portion where the beam portion 21 is provided and a portion where a later-described weight portion is provided.
- the beam portion 21 has an annular shape when viewed in plan.
- Support portions 22a and 22b are connected from both ends of the beam portion 21 in the X-axis direction so as to extend outward along the X-axis direction.
- the ends of the support portions 22 a and 22 b that are connected to the beam portion 21 are connected to the main body portion of the semiconductor substrate 2. Snow That is, the beam portion 21 is buoyant by the support portions 22a and 22b.
- weight portions 23a and 23b are disposed on both sides of the beam portion 21 in the Y-axis direction.
- the weight portions 23a and 23b are connected to the beam portion 21 by connecting portions 24a and 24b connected to the beam portion 21 on both sides in the Y-axis direction and on the outer side in the Y-axis direction. Accordingly, the weight portions 23a and 23b are arranged in a state of being floated with respect to the main body portion of the semiconductor substrate 2 in the same manner as the beam portion 21.
- the weight portions 23a and 23b can be displaced in three axial directions, ie, the X-axis direction, the Y-axis direction, and the Z-axis direction.
- the semiconductor substrate 2 is formed by cleaning an SOI (Silicon-On-Insulator) substrate using a micromachining technique.
- SOI substrate is a multilayer substrate in which a Si layer, a SiO layer, and a Si layer are laminated in this order.
- the semiconductor substrate used in the present invention is not limited to the SOI substrate. Absent.
- piezoresistive portions R 1 to R 4 are arranged to detect acceleration in the X-axis direction. These four pins
- XI X4 constitutes an X-axis direction acceleration detector that detects acceleration in the X-axis direction.
- the piezoresistive portions R to R form a bridge circuit shown in FIG. 8 by the wiring pattern formed on the semiconductor substrate 2. Output in this bridge circuit
- the acceleration in the X direction is detected by the change. That is, as shown in FIG. 8, in this bridge circuit, the piezoresistors R, R
- X3 and X4 are electrically connected to form a voltage detection unit X2.
- the piezoresistors R 1 and R 2 are electrically connected, and this connection is connected to an external voltage power source.
- the voltage input is connected to Vs. Furthermore, the piezoresistor portions R 1 and R 2 are electrically connected by an external wiring pattern, and the connection portion is connected to the ground potential.
- the X-axis resulting from the acceleration Directional force acts on the weight parts 23a and 23b, which are the movable parts 2a. Due to the acting force in the X-axis direction at the weight parts 23a and 23b, the weight parts 23a and 23b are displaced in the X-axis direction from the reference state shown by the broken line in FIG. 9, for example, as shown by the solid line in FIG. . Due to the displacement of the weight portions 23a and 23b in the X-axis direction, the beam portion 21 bends and deforms via the connecting portion, thereby generating stress in the beam portion 21.
- the resistance value of the piezoresistive portion in the X-axis direction acceleration detecting portion described above changes. Therefore, when the acceleration in the X-axis direction is generated, the output of the bridge circuit shown in FIG. 8 constituting the X-axis direction acceleration detection unit changes, and the acceleration in the X-axis direction is detected. In this case, if no acceleration acts in the Y-axis direction and the Z-axis direction, the Y-axis direction acceleration detection unit and the Z-axis direction acceleration detection unit constitute a change in the output of each bridge circuit. It will not be possible. In this way, acceleration in the X-axis direction is detected.
- the acceleration sensor as described above is configured as a semiconductor sensor having a movable portion on a semiconductor substrate.
- the present invention is not limited to a semiconductor sensor using such an acceleration sensor.
- a semiconductor substrate on which an appropriate semiconductor sensor having a movable part is formed can be used.
- the semiconductor sensor include an acceleration sensor, a sensor having a movable part using various semiconductors such as an angular velocity sensor, an angular acceleration sensor, and a piezoelectric gyro sensor.
- the semiconductor substrate 2 is used as an element substrate.
- the element substrate is not limited to a semiconductor substrate, and the substrate has a material force other than a semiconductor.
- the functional unit is not limited to the above-described sensor, and includes a wide range of functional units that function as various electronic components.
- the second case plate 4 is laminated on the lower surface of the semiconductor substrate 2, but in the present invention, the second case plate 4 is not necessarily used. That is, the upper surface may be opened after mounting without using the second case plate 4.
- the functional part formed on the element substrate can be surely hermetically sealed.
- the mechanical strength of electronic parts can also be increased.
- the plurality of protrusions and terminal electrodes may be formed on the second case plate 4 side. In that case, it is possible to obtain an electronic component that can be mounted on the mounting board from the case plate side. That is, the vertical directionality of the electronic component can be eliminated.
- the case plates 3 and 4 may not be provided with the recesses 4a.
- the gap may be formed by increasing the thickness of the adhesive layer applied in a frame shape.
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- General Physics & Mathematics (AREA)
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- Power Engineering (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007529459A JP4613958B2 (ja) | 2005-08-05 | 2006-05-16 | 電子部品の製造方法及び電子部品 |
DE112006001844T DE112006001844B4 (de) | 2005-08-05 | 2006-05-16 | Verfahren zum Herstellen einer Elektronikkomponente und Elektronikkomponente |
US12/020,729 US7507346B2 (en) | 2005-08-05 | 2008-01-28 | Method for manufacturing electronic component, and electronic component |
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JP2005-228243 | 2005-08-05 | ||
JP2005228243 | 2005-08-05 |
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US12/020,729 Continuation US7507346B2 (en) | 2005-08-05 | 2008-01-28 | Method for manufacturing electronic component, and electronic component |
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WO2007017980A1 true WO2007017980A1 (ja) | 2007-02-15 |
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US (1) | US7507346B2 (ja) |
JP (1) | JP4613958B2 (ja) |
CN (1) | CN100565848C (ja) |
DE (1) | DE112006001844B4 (ja) |
TW (1) | TWI304646B (ja) |
WO (1) | WO2007017980A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009505389A (ja) * | 2005-08-11 | 2009-02-05 | ハイマイト アクティーゼルスカブ | マイクロ部品用チップ・スケール・パッケージ |
JPWO2009022578A1 (ja) * | 2007-08-10 | 2010-11-11 | 株式会社村田製作所 | 素子構造およびその製造方法 |
JP2011044552A (ja) * | 2009-08-20 | 2011-03-03 | Cmk Corp | プリント配線板の製造方法 |
WO2017057138A1 (ja) * | 2015-09-30 | 2017-04-06 | 住友ベークライト株式会社 | 構造体、配線基板および配線基板の製造方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012137714A1 (ja) | 2011-04-04 | 2012-10-11 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
WO2017061374A1 (ja) * | 2015-10-06 | 2017-04-13 | 住友電工プリントサーキット株式会社 | プリント配線板及び電子部品 |
KR102204276B1 (ko) | 2015-11-30 | 2021-01-15 | 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 | 다이를 위한 보호용 환경 배리어 |
Citations (3)
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WO2001026147A1 (fr) * | 1999-10-04 | 2001-04-12 | Seiko Epson Corporation | Dispositif a semi-conducteur, son procede de fabrication, carte de circuit imprime et dispositif electronique |
JP2001124794A (ja) * | 1999-10-26 | 2001-05-11 | Matsushita Electric Works Ltd | マイクロ加工センサの実装構造及びその実装方法 |
JP2004311574A (ja) * | 2003-04-03 | 2004-11-04 | Shinko Electric Ind Co Ltd | インターポーザー及びその製造方法ならびに電子装置 |
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JPH11201788A (ja) * | 1998-01-19 | 1999-07-30 | Mitsubishi Electric Corp | 半導体カルマン渦流量センサ及びその製造方法 |
JP4260339B2 (ja) * | 2000-04-27 | 2009-04-30 | 三菱電機株式会社 | 加速度センサの製造方法 |
US6476415B1 (en) * | 2000-07-20 | 2002-11-05 | Three-Five Systems, Inc. | Wafer scale processing |
JP2004340730A (ja) * | 2003-05-15 | 2004-12-02 | Hitachi Ltd | 半導体装置及びその製造方法 |
US6953990B2 (en) * | 2003-09-19 | 2005-10-11 | Agilent Technologies, Inc. | Wafer-level packaging of optoelectronic devices |
US6926592B2 (en) * | 2003-11-25 | 2005-08-09 | Motorola, Inc. | Surface treatment of mechanically abraded glass |
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2006
- 2006-05-16 DE DE112006001844T patent/DE112006001844B4/de not_active Expired - Fee Related
- 2006-05-16 WO PCT/JP2006/309724 patent/WO2007017980A1/ja active Application Filing
- 2006-05-16 JP JP2007529459A patent/JP4613958B2/ja not_active Expired - Fee Related
- 2006-05-16 CN CNB2006800248759A patent/CN100565848C/zh not_active Expired - Fee Related
- 2006-05-19 TW TW095118027A patent/TWI304646B/zh not_active IP Right Cessation
-
2008
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2001026147A1 (fr) * | 1999-10-04 | 2001-04-12 | Seiko Epson Corporation | Dispositif a semi-conducteur, son procede de fabrication, carte de circuit imprime et dispositif electronique |
JP2001124794A (ja) * | 1999-10-26 | 2001-05-11 | Matsushita Electric Works Ltd | マイクロ加工センサの実装構造及びその実装方法 |
JP2004311574A (ja) * | 2003-04-03 | 2004-11-04 | Shinko Electric Ind Co Ltd | インターポーザー及びその製造方法ならびに電子装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009505389A (ja) * | 2005-08-11 | 2009-02-05 | ハイマイト アクティーゼルスカブ | マイクロ部品用チップ・スケール・パッケージ |
JPWO2009022578A1 (ja) * | 2007-08-10 | 2010-11-11 | 株式会社村田製作所 | 素子構造およびその製造方法 |
JP2011044552A (ja) * | 2009-08-20 | 2011-03-03 | Cmk Corp | プリント配線板の製造方法 |
WO2017057138A1 (ja) * | 2015-09-30 | 2017-04-06 | 住友ベークライト株式会社 | 構造体、配線基板および配線基板の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN100565848C (zh) | 2009-12-02 |
US7507346B2 (en) | 2009-03-24 |
JPWO2007017980A1 (ja) | 2009-02-19 |
DE112006001844T5 (de) | 2008-06-12 |
DE112006001844B4 (de) | 2012-07-05 |
TWI304646B (en) | 2008-12-21 |
TW200742009A (en) | 2007-11-01 |
US20080113164A1 (en) | 2008-05-15 |
CN101218669A (zh) | 2008-07-09 |
JP4613958B2 (ja) | 2011-01-19 |
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