WO2011155032A1 - クラック特定装置と半導体装置 - Google Patents
クラック特定装置と半導体装置 Download PDFInfo
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- WO2011155032A1 WO2011155032A1 PCT/JP2010/059734 JP2010059734W WO2011155032A1 WO 2011155032 A1 WO2011155032 A1 WO 2011155032A1 JP 2010059734 W JP2010059734 W JP 2010059734W WO 2011155032 A1 WO2011155032 A1 WO 2011155032A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/10—Plotting field distribution ; Measuring field distribution
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
Definitions
- the present invention relates to a crack identifying device that detects the presence or absence of a crack that may occur in a solder layer that connects an element of a semiconductor device and a connected member such as a substrate, and a semiconductor device including the crack identifying device.
- a conventional semiconductor device mounting structure will be described with reference to FIG.
- a semiconductor element in which a circuit board c is fixed to one side surface of an insulating substrate d made of an aluminum nitride (AlN) plate, a pure aluminum plate or the like and is electrically connected to a lead frame f leading to an external electrode.
- a and a circuit board c are fixed via a solder layer b, and a heat radiating plate e (heat sink) for radiating heat from the semiconductor element a via the circuit board c (Q direction) on the other side of the insulating substrate d
- the semiconductor device H is configured. There are various forms of the semiconductor device other than the illustrated example.
- a form in which a cooler or the like is brazed under the heat sink a form in which the illustrated apparatus is potted with a sealing resin body, a semiconductor
- the element is brazed to a heat sink or a lead frame.
- the semiconductor elements are connected through a solder layer such as a substrate, and the semiconductor device has a multilayer laminated structure of various components.
- the linear expansion coefficient (or linear expansion coefficient) of a semiconductor element is about 3 ppm / K
- the linear expansion coefficient of a circuit board or an insulating substrate is about 4 to 5 ppm / K
- the linear heat expansion coefficient of an aluminum heat sink is The coefficient of linear expansion is very different for each component, about 25 ppm / K.
- Patent Document 1 the temperature of each part is detected by the temperature detection elements arranged at the central part and the peripheral end of the semiconductor element, and cracks are generated due to the temperature difference.
- a method of detecting is disclosed.
- This detection method focuses on the fact that the thermal resistance of the cracked part increases and the heat dissipation is hindered, and the temperature rises due to this, and one part is compared to the other part. This is a method of identifying that a crack has occurred in this part when the temperature rises.
- the present invention has been made in view of the above-described problems, and a crack that can accurately and accurately identify that a crack has occurred in a solder layer that connects an element of a semiconductor device and a connected member such as a substrate.
- An object is to provide a specific device and a semiconductor device including the crack specific device.
- the crack identification apparatus is a crack identification apparatus that identifies whether or not a crack has occurred in a solder layer in a semiconductor device in which at least a semiconductor element is connected to a connected member via a solder layer.
- a specific device comprising a generator that is fixed to a member constituting the semiconductor device and generates a magnetic field, and a detector that is disposed in the solder layer and detects the magnitude of the magnetic field, and is generated in the generator
- the magnetic field is detected by the detection unit, and it is determined that a crack has occurred in the solder layer when the magnitude of this magnetic field changes with respect to the magnitude of the magnetic field detected before the occurrence of the crack.
- the semiconductor device in which the crack identification device of the present invention is incorporated may be a case where a semiconductor element or a substrate as a constituent member is accommodated in a case, or a caseless structure. These constituent members may or may not be potted with a sealing resin body. Further, it naturally includes those having a lead frame leading to the external electrode.
- the “substrate” here is a general term for a circuit board, an insulating board, a heat sink, a combination of a circuit board and an insulating board, or a combination of them and a heat sink.
- the crack identification device of the present invention includes a generation unit that generates a magnetic field and a detection unit that is disposed in the solder layer and detects the magnitude of the magnetic field.
- the “magnitude of the magnetic field” can also be referred to as the strength of the magnetic field.
- the value of the measured magnetic flux density can be used as the magnitude of the magnetic field.
- examples of the generating part include magnets such as rare earth magnets, ferrite magnets, and alnico magnets, and coils attached to the lead frame in the case where the semiconductor device has a lead frame extending to the outside. Can do.
- the generating portion is made of nickel, iron, cobalt, or an alloy thereof dispersed in a solder material (tin, tin silver, tin copper, tin silver copper, tin zinc aluminum, etc.) forming the solder layer. It may be a ferromagnetic material.
- this bulk body can also be the above-described generating portion.
- examples of the detection unit for detecting the magnitude of the magnetic field include a Hall element and a magnetoresistive element (MR element), but the magnetic impedance is assumed to detect a smaller change in the magnitude of the magnetic field.
- An element (MI element) or the like is preferable.
- MI element magnetoresistive element
- the generating section that generates the magnetic field
- the detecting section that detects the magnitude of the magnetic field generated in the generating section, but in any form, there is a crack in the solder layer.
- the detected value changes with respect to the magnitude of the magnetic field detected in a state where it does not occur, it is specified that a crack has occurred in the solder layer.
- the solder layer When a crack occurs in the solder layer, the solder layer is crushed so as to spread sideways, or the lower surface of the solder layer is deformed so as to wave, so that the position of the detection unit disposed in the solder layer Will deviate from the position before the crack occurred.
- the crack identifying apparatus of the present invention utilizes the fact that the distance between the generating unit and the detecting unit changes due to the displacement of the detecting unit, and the magnitude of the magnetic field detected by the detecting unit changes due to the change in the distance. Yes.
- the distance between the detection unit and the generation unit may be shorter than before the crack generation. In this case, however, the magnitude of the magnetic field detected by the detection unit is reversed. In any case, the magnitude of the magnetic field detected before and after the occurrence of a crack changes.
- the crack identification device of the present invention does not identify a crack by a change in temperature at an arbitrary portion of a solder layer, as in the conventional published technique described above, but a magnitude of a magnetic field that inevitably changes due to the occurrence of a crack. Since the crack is specified based on the depth, the occurrence of the crack can be specified precisely in real time.
- the crack identification device described above may further include a computer to which sensing data related to the magnitude of the magnetic field in the detection unit is constantly transmitted, and when the received sensing data changes in this computer. Or, when the amount of change exceeds a certain threshold value, it may be further provided with a function for displaying on the screen that a crack has occurred in the solder layer or for reporting a warning.
- a magnetic cover body having an opening on the detecting unit side is arranged around the generating unit.
- An apparatus configuration may be applied in which the magnitude of the magnetic field generated at the generating unit by the magnetic cover body is amplified and detected by the detecting unit.
- a separate detection unit different from the detection unit is disposed in the vicinity of the generation unit, and the generation unit includes both the detection unit and the separate detection unit.
- the magnitude of the magnetic field generated in step 1 is detected.
- the magnitude of the temperature-dependent magnetic field the actual magnitude of the magnetic field, the temperature at that time, and the magnitude of the magnetic field corrected by this temperature
- a map in which data relating to a plurality of temperatures and a plurality of magnetic fields are specified, and the current temperature is determined from the magnitude of the magnetic field detected by the separate detection unit with reference to the map.
- the magnitude of the magnetic field detected by the detection unit is the magnitude of the corrected magnetic field based on the specified temperature and the map, and the magnitude of the magnetic field detected before the occurrence of a crack This correction Is intended to identify those caused cracks in the solder layer with the magnitude of the magnetic field is changed.
- the magnitude of the magnetic field generated in the generation part is detected by a separate detection part in the vicinity thereof and placed in the solder layer.
- the magnitude of the magnetic field detected by the detected detector is corrected based on the temperature calculated from the magnitude of the magnetic field detected by the separate detector, and the magnitude of the corrected magnetic field is the previous magnetic field.
- the presence or absence of the occurrence of cracks is specified by comparing whether or not the size has changed.
- the present invention extends to a semiconductor device provided with the above-described crack identification device.
- the generating part for generating a magnetic field is arranged in the constituent member of the semiconductor device, and the magnitude of the magnetic field and its change in the solder layer where the crack can occur.
- FIG. 1 is a schematic view showing an embodiment of a crack identification device of the present invention and a semiconductor device equipped with the same. It is the schematic diagram explaining the state which the crack produced in the solder layer of the semiconductor device of FIG. It is a schematic diagram which shows other embodiment of the crack identification apparatus of this invention, and a semiconductor device provided with the same. It is a schematic diagram which shows further another embodiment of the crack identification apparatus of this invention, and a semiconductor device provided with the same.
- FIG. 5 is a schematic diagram illustrating a state in which a crack is generated in the solder layer of the semiconductor device of FIG. 4. It is a schematic diagram which shows further another embodiment of the crack identification apparatus of this invention, and a semiconductor device provided with the same.
- FIG. 8 is a schematic diagram illustrating a state where a crack is generated in the solder layer of the semiconductor device of FIG. 7.
- (A) is the figure explaining the closed magnetic circuit in FIG. 7 with the virtual magnetic circuit
- (b) is the figure explaining the closed magnetic circuit in FIG. 8 with the virtual magnetic circuit.
- (A) is the schematic diagram which shows further another embodiment of the crack identification apparatus of this invention, and a semiconductor device provided with the same
- (b) is the figure explaining the control flow. It is a figure explaining the relationship between the magnetic flux density detected and temperature. It is a figure explaining the relationship between the detected magnetic flux density and the distance between a detection part and a generation
- SYMBOLS 1 Semiconductor element, 2 ... Circuit board, 3 ... Insulating substrate, 4 ... Heat sink, 5 ... Solder layer, 6 ... Lead frame, 7 ... Magnet (generation part), 7A ... Coil (generation part), 8 ... MI element ( Detection unit), 9 ... Magnetic cover body, 10, 10A, 10B, 10C, 10D, 10E ... Crack identifying device, 20, 20A, 20B, 20C, 20D, 20E ... Semiconductor device, 51 ... Ferromagnetic metal particle, 52 ... Ferromagnetic metal bulk
- a crack identification device of the present invention and a semiconductor device including the same will be described with reference to the drawings.
- the structure of the semiconductor device that is, the constituent members constituting the semiconductor device and the laminated form thereof are not limited to the illustrated examples.
- a computer for detecting detection data at the detection unit, correcting the detection data at the current temperature, or displaying or alarming the occurrence of a crack may be further provided, but the illustration is omitted. .
- FIG. 1 is a view showing an embodiment of a crack identifying device of the present invention and a semiconductor device including the same
- FIG. 2 illustrates a state in which a crack is generated in the solder layer of the semiconductor device of FIG. FIG.
- the solder layer 5 connects the semiconductor element 1 and the circuit board 2, the circuit board 2, the insulating substrate 3, and the heat sink 4 are connected by brazing or bonding, and the semiconductor element 1 is connected to the external electrode. It is connected to the lead frame 6 that leads to the outline.
- the lead frame 6 is provided with a magnet 7 which is a generator for generating a magnetic field. Inside the solder layer 5, the magnitude of the magnetic field generated from the magnet 7 and its change are displayed.
- An MI element 8 which is a detection unit for detection is provided, and the crack identification device 10 is configured by the magnet 7 and the MI element 8.
- the magnet 7 may be any of a rare earth magnet, a ferrite magnet, and an alnico magnet, but has a large magnetic flux density, and therefore the size and the size of the MI element 8 are not provided with an amplifier or the like. It is preferable to use a rare-earth magnet that can detect the change in the temperature more precisely.
- the distance between the magnet 7 and the MI element 8 in the state of FIG. 1, that is, in the state where no crack is generated in the solder layer 5, is L1, and the magnetic flux flows from the magnet 7 to the MI element 8 (X1 direction).
- the magnitude of the magnetic field for example, magnetic flux density
- a crack C is generated in the solder layer 5 as shown in FIG. 2.
- the MI element 8 is initially formed by the crack C generated at the upper end of the solder layer 5.
- the distance between the magnet 7 and the MI element 8 becomes a distance L2 shorter than the initial distance L1.
- the spatial resistance between the magnet 7 and the MI element 8 becomes smaller, and the magnitude of the magnetic field detected by the MI element 8 changes to a value larger than the value before the occurrence of the crack. Is detected as a crack C in the solder layer 5.
- FIG. 3 is a diagram showing another embodiment of the crack identification device and a semiconductor device equipped with the same.
- a coil 7A in which a conductive wire of the same material is wound is brazed to a lead frame 6 made of copper material, and when the lead frame 6 is energized, a part of the current flows to the coil 7A. It generates a magnetic field.
- the magnetic flux generated in the coil 7A flows to the MI element 8 (X1 direction), and the magnitude of the magnetic field is sensed here, and the coil 7A and the MI element 8 constitute a crack identifying device 10A.
- FIG. 4 is a view showing still another embodiment of a crack identification device and a semiconductor device including the same
- FIG. 5 illustrates a state in which a crack is generated in the solder layer of the semiconductor device of FIG. FIG.
- ferromagnetic metal particles 51 are dispersed in the solder layer 5, and these serve as a generating portion for generating a magnetic field, and a crack identifying device is formed from the ferromagnetic metal particles 51 and the MI element 8. 10B is configured.
- the magnetic flux from a large number of dispersed metal particles 51 flows to the MI element 8 (X2 direction), and the sum of the magnetic field magnitudes of each metal particle 51 (aggregation of metal particles).
- the magnitude of the magnetic field of the body is detected by the MI element 8.
- a crack C is generated in the solder layer 5 and the MI element 8 is inclined to the position inclined outward from the initial position (Y2 direction), whereby the MI element 8 and the many metal particles 51 are formed.
- the distance between the aggregates is longer than the initial distance. Therefore, when the distance resistance in which magnetic flux flows from the aggregate of metal particles 51 to the MI element 8 (in the X3 direction) increases, the magnitude of the magnetic field detected by the MI element 8 is smaller than the value before the occurrence of the crack. It is specified that the crack C is generated in the solder layer 5 by detecting this change.
- FIG. 6 is a diagram showing still another embodiment of the crack identification device and a semiconductor device provided with the same.
- a spherical bulk body 52 that guarantees the thickness of the solder layer is embedded in the solder layer 5.
- the bulk body 52 is made of nickel, iron, cobalt, and the like, which are ferromagnetic metals. It is formed from an alloy of Therefore, the ferromagnetic metal bulk body 52 serves as a generating unit that generates a magnetic field, and the MI identifying element 8 serving as a detecting unit constitutes a crack identifying device 10C.
- FIG. 7 is a view showing still another embodiment of the crack identification device and a semiconductor device including the same
- FIG. 8 illustrates a state in which a crack is generated in the solder layer of the semiconductor device of FIG. FIG.
- a spherical and ferromagnetic bulk body 52 that guarantees the thickness of the solder layer is embedded in the solder layer 5, and a magnet 7 is attached to the lead frame 6.
- a magnetic cover body 9 having an opening on the MI element 8 side is arranged around the MI element 8. The magnetic cover body 9 amplifies the magnitude of the magnetic field generated by the magnet 7 and detects it by the MI element 8. Yes.
- a crack identifying device 10D is composed of the magnet 7, the magnetic cover body 9 that provides the generated magnetic field to the MI element 8, the ferromagnetic bulk body 52, and the MI element 8. The crack identification device may not include a ferromagnetic bulk body.
- the distance between the magnetic cover body 9 and the MI element 8 is L3, and the distance between the ferromagnetic bulk body 52 and the magnet 7 is L4.
- a flow (X4 direction) is formed.
- the two spatial distances: L3 and L4 change to L5 and L6, respectively, so that the spatial resistance changes, and the magnitude of the magnetic field detected by the MI element 8 changes from the value before the crack is generated. It is specified that a crack C has occurred in the solder layer 5 by detecting the change.
- FIGS. 9a and 9b are diagrams illustrating the above-mentioned closed magnetic circuit related to FIGS.
- E 7 simulates the magnet 7 that generates a magnetic field
- R 9 simulates the magnetic cover body 9 with a resistance value
- R L3 , R L4 , R L5 , and R L6 are respectively , Spatial distance: Spatial resistance of L3 to L6 is shown.
- FIG. 10a is a view showing still another embodiment of the crack identification device and a semiconductor device provided with the same, and FIG. 10b is a diagram for explaining the control flow thereof.
- a spherical and ferromagnetic bulk body 52 that guarantees the thickness of the solder layer is embedded in the solder layer 5, and a magnet 7 is attached to the lead frame 6.
- 7 is provided with a magnetic cover body 9 having an opening on the MI element 8 side.
- a separate MI element 8A is disposed between the magnet 7 and the magnetic cover body 9 so as to be in contact with the magnet 7.
- the crack identification device 10E is composed of the magnet 7, the magnetic cover body 9, the ferromagnetic bulk body 52, the MI element 8, and the separate MI element 8A.
- the crack identification device 10E shown in the figure takes into account that the magnitude of the magnetic field is temperature-dependent, and detects the magnitude of the magnetic field generated by the magnet 7 with a separate MI element 8A in the vicinity thereof, and the solder layer 5 is corrected based on the temperature calculated from the magnitude of the magnetic field detected by the separate MI element 8A, and the magnitude of the magnetic field after the correction is corrected.
- the presence or absence of cracks is specified by comparing whether or not the magnitude has changed from the previous magnitude of the magnetic field (in a state where no cracks have occurred).
- FIG. 11 the relationship between the detected magnetic flux density and the temperature, that is, the temperature dependence of the detected magnetic flux density is shown in a graph based on the demonstration of the present inventors.
- Example 1 has the configuration of the crack identification device 10 shown in FIG. 1 and the magnet 7 is made of ferrite
- Example 2 similarly has the configuration of the crack identification device 10 and the magnet 7 is made of a rare earth magnet.
- the magnet 7 is made of ferrite in the configuration of the crack identifying device 10E shown in FIG.
- the magnetic flux density detected by the MI element 8A of Example 3 at 100 ° C. is normalized to 1, and the values of the other magnetic flux densities are shown as ratios thereto.
- the magnitude of the magnetic field (magnetic flux density) detected by the MI element 8 is specified from the magnitude of the magnetic field detected by the MI element 8A in the vicinity of the magnet 7. It is corrected by temperature.
- the magnetic flux density (measured value 1) is measured by the MI element 8A in the vicinity of the magnet 7 (step S1), and on the other hand, a correlation map between the temperature and the magnetic flux density and a correction value of the magnetic flux density considering the temperature are shown. It is created based on the verification of 11 etc. (step S2).
- the measured value 1 is collated with the correlation map to identify the current temperature (step S3), while the magnetic flux density (measured value 2) is measured with the MI element 8 disposed in the solder layer (step S4).
- the measured value 2 is a correction value considering the current temperature (step S5), the magnitude of the magnetic field at the MI element position of the solder layer can be specified precisely.
- the magnitude of the magnetic field after this correction is compared with the magnitude of the magnetic field so far, and if there is a change, it is specified that a crack has occurred.
- FIG. 12 is a diagram in which the relationship between the detected magnetic flux density and the distance between the detection unit and the generation unit is specified by the present inventors' verification.
- Examples 1 to 3 are the same as FIG.
- the detection sensitivity is extremely high, but the magnetic field generated from the generation unit may affect the performance of the semiconductor element. It is preferable to configure the crack identifying apparatus shown in the figure by setting the shortest distance.
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Abstract
Description
Claims (10)
- 少なくとも半導体素子がはんだ層を介して被接続部材と接続されてなる半導体装置において、はんだ層にクラックが生じたか否かを特定する、クラック特定装置であって、
半導体装置を構成する部材に固定されて磁界を発生する発生部と、
はんだ層内に配されて磁界の大きさを検出する検出部と、からなり、
前記発生部で生じた磁界を前記検出部で検知するようになっており、クラック発生前に検知されている磁界の大きさに対してこの磁界の大きさが変化したことをもってはんだ層にクラックが生じたものと特定するクラック特定装置。 - 少なくとも半導体素子がはんだ層を介して被接続部材と接続されてなる半導体装置において、はんだ層にクラックが生じたか否かを特定する、クラック特定装置であって、
はんだ層内で磁界を発生する強磁性金属からなる発生部と、
はんだ層内に配されて磁界の大きさを検出する検出部と、からなり、
前記発生部で生じた磁界を前記検出部で検知するようになっており、クラック発生前に検知されている磁界の大きさに対してこの磁界の大きさが変化したことをもってはんだ層にクラックが生じたものと特定するクラック特定装置。 - 前記発生部が磁石からなる請求項1に記載のクラック特定装置。
- 前記半導体装置は、半導体素子から外部に延びるリードフレームを具備するものであり、
前記リードフレームにコイルを取り付けてこれを前記発生部とし、リードフレームに流れる電流の一部を前記コイルに通電させて磁界を生じさせるようになっている請求項1に記載のクラック特定装置。 - 前記強磁性金属がはんだ層内に分散している請求項2に記載のクラック特定装置。
- 前記強磁性金属がはんだ層内に埋設されてはんだ層の厚みを保持するバルク体である請求項2に記載のクラック特定装置。
- 前記強磁性金属が、ニッケル、鉄、コバルト、もしくはこれらの合金のうちのいずれか一種からなる請求項2または請求項2に従属する請求項5または6のいずれかに記載のクラック特定装置。
- 前記発生部の周囲に、前記検出部側に開口を備えた磁性カバー体が配されており、この磁性カバー体によって発生部で生じた磁界の大きさが増幅されて検出部に検出される請求項1~7のいずれかに記載のクラック特定装置。
- 前記発生部の近傍に前記検出部と異なる別途の検出部が配され、
前記検出部と前記別途の検出部の双方で前記発生部で生じた磁界の大きさが検出されるようになっており、
温度依存性を有する磁界の大きさに関し、実際の磁界の大きさと、その際の温度と、この温度によって補正された磁界の大きさと、に関するデータが複数の温度と複数の磁界に対して特定されたマップをさらに有しており、
前記マップを参照して、前記別途の検出部で検出された磁界の大きさから現在の温度が特定され、前記検出部で検出された磁界の大きさを特定された温度と前記マップに基づいて前記補正された磁界の大きさとし、クラック発生前に検知されている磁界の大きさに対してこの補正された磁界の大きさが変化したことをもってはんだ層にクラックが生じたものと特定する請求項1~8のいずれかに記載のクラック特定装置。 - 請求項1~9に記載のクラック特定装置を備えた半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2010547898A JP5223931B2 (ja) | 2010-06-09 | 2010-06-09 | クラック特定装置と半導体装置 |
US13/376,204 US8604781B2 (en) | 2010-06-09 | 2010-06-09 | Crack determining device and semiconductor device |
PCT/JP2010/059734 WO2011155032A1 (ja) | 2010-06-09 | 2010-06-09 | クラック特定装置と半導体装置 |
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WO2016098723A1 (ja) * | 2014-12-16 | 2016-06-23 | 京セラ株式会社 | 回路基板および電子装置 |
US11099155B2 (en) * | 2016-04-04 | 2021-08-24 | King Abdullah University Of Science And Technology | Corrosion detection of nanowires by magnetic sensors |
US10629504B2 (en) * | 2016-05-03 | 2020-04-21 | Avago Technologies International Sales Pte. Limited | Die edge crack and delamination detection |
US10224301B2 (en) * | 2017-07-05 | 2019-03-05 | Advanced Semiconductor Engineering, Inc. | Semiconductor package device and method of manufacturing the same |
CN113241502B (zh) * | 2021-04-13 | 2022-12-27 | 珠海冠宇电池股份有限公司 | 一种虚焊检测方法、虚焊检测装置及锂电池的制备方法 |
CN113670704A (zh) * | 2021-08-27 | 2021-11-19 | 山东精工电源科技有限公司 | 探测储能电池组点焊虚漏焊的方法及使用的探测装置 |
CN115308116B (zh) * | 2022-08-18 | 2024-01-05 | 浙江天女集团制漆有限公司 | 一种新型高防腐彩板卷材涂料性能检测设备 |
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JPH09148523A (ja) * | 1995-11-21 | 1997-06-06 | Toshiba Corp | 半導体装置 |
JP2005259753A (ja) * | 2004-03-09 | 2005-09-22 | Mitsubishi Electric Corp | 半導体装置 |
JP2007040817A (ja) * | 2005-08-03 | 2007-02-15 | Fuji Electric Device Technology Co Ltd | 電力用半導体素子の異常検出装置 |
JP2008140800A (ja) * | 2006-11-30 | 2008-06-19 | Meidensha Corp | プリント基板のはんだ部の歪または温度の測定方法及びプリント基板 |
JP2009232261A (ja) * | 2008-03-24 | 2009-10-08 | Akebono Brake Ind Co Ltd | ホールic |
JP2009264959A (ja) * | 2008-04-25 | 2009-11-12 | Mitsubishi Electric Corp | 接続異常検知装置およびその装置を用いた車載用電子機器 |
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JPH09148523A (ja) * | 1995-11-21 | 1997-06-06 | Toshiba Corp | 半導体装置 |
JP2005259753A (ja) * | 2004-03-09 | 2005-09-22 | Mitsubishi Electric Corp | 半導体装置 |
JP2007040817A (ja) * | 2005-08-03 | 2007-02-15 | Fuji Electric Device Technology Co Ltd | 電力用半導体素子の異常検出装置 |
JP2008140800A (ja) * | 2006-11-30 | 2008-06-19 | Meidensha Corp | プリント基板のはんだ部の歪または温度の測定方法及びプリント基板 |
JP2009232261A (ja) * | 2008-03-24 | 2009-10-08 | Akebono Brake Ind Co Ltd | ホールic |
JP2009264959A (ja) * | 2008-04-25 | 2009-11-12 | Mitsubishi Electric Corp | 接続異常検知装置およびその装置を用いた車載用電子機器 |
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JPWO2011155032A1 (ja) | 2013-08-01 |
JP5223931B2 (ja) | 2013-06-26 |
US8604781B2 (en) | 2013-12-10 |
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