WO2022180700A1 - 半導体ウェハ試験装置、半導体ウェハ試験システム、平坦度測定装置、及び、配線板の平坦度の調整方法 - Google Patents
半導体ウェハ試験装置、半導体ウェハ試験システム、平坦度測定装置、及び、配線板の平坦度の調整方法 Download PDFInfo
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- WO2022180700A1 WO2022180700A1 PCT/JP2021/006926 JP2021006926W WO2022180700A1 WO 2022180700 A1 WO2022180700 A1 WO 2022180700A1 JP 2021006926 W JP2021006926 W JP 2021006926W WO 2022180700 A1 WO2022180700 A1 WO 2022180700A1
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- Prior art keywords
- semiconductor wafer
- wiring board
- flatness
- connector
- wafer testing
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2889—Interfaces, e.g. between probe and tester
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07314—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being perpendicular to test object, e.g. bed of nails or probe with bump contacts on a rigid support
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07342—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being at an angle other than perpendicular to test object, e.g. probe card
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2831—Testing of materials or semi-finished products, e.g. semiconductor wafers or substrates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/286—External aspects, e.g. related to chambers, contacting devices or handlers
- G01R31/2863—Contacting devices, e.g. sockets, burn-in boards or mounting fixtures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2887—Features relating to contacting the IC under test, e.g. probe heads; chucks involving moving the probe head or the IC under test; docking stations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2891—Features relating to contacting the IC under test, e.g. probe heads; chucks related to sensing or controlling of force, position, temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
Definitions
- the present invention relates to a semiconductor wafer testing apparatus for testing an electronic component under test (DUT: Device Under Test) such as an integrated circuit element formed on a semiconductor wafer, a semiconductor wafer testing system equipped with the semiconductor wafer testing apparatus, and a semiconductor wafer test.
- the present invention relates to a flatness measuring device for measuring the flatness of a wiring board provided in the device, and a method of adjusting the flatness of the wiring board.
- a conventional probe card assembly consists of a space transformer having a resilient contact structure on its bottom surface that contacts the pads of a semiconductor device formed on a semiconductor wafer, a printed wiring board, and between the space transformer and the printed wiring board. and a dedicated flattening device for adjusting the flatness of the spatial transformer (see Patent Document 1, for example).
- the printed wiring board is bent or otherwise deformed, contact failure may occur between the printed wiring board and the interposer, or the elastic contact structure may be displaced with respect to the pads of the semiconductor device. may affect the test.
- the probe card assembly is provided with a dedicated flattening device as described above, there is a problem that the space on the printed wiring board in which connectors and the like can be mounted is limited.
- the problem to be solved by the present invention is to provide a semiconductor wafer testing apparatus capable of adjusting the flatness of the wiring board without limiting the space on the wiring board. Further, the problems to be solved by the present invention are a semiconductor wafer test system including the semiconductor wafer test apparatus, a flatness measuring apparatus for measuring the flatness of the wiring board provided in the semiconductor wafer test apparatus, and the wiring board. is to provide a method for adjusting the flatness of
- a semiconductor wafer testing apparatus is a semiconductor wafer testing apparatus for testing DUTs formed on a semiconductor wafer, and is electrically connectable to a probe card having probes that contact the DUTs.
- a first wiring board having a plurality of first connectors; a plurality of second wiring boards each having a second connector fitted to the first connector; the first connector and the By changing the position of the second wiring board along the first direction, which is the normal direction of the first wiring board, while the second connector is engaged, and a plurality of adjusting mechanisms for adjusting the flatness of the wiring board.
- the first direction may be a direction substantially parallel to the vertical direction.
- the first wiring board extends along a second direction substantially orthogonal to the first direction
- the second wiring board extends along the first direction.
- the first connector and the second connector are mated in a direction substantially parallel to the first direction. good.
- the plurality of second wiring boards are arranged at intervals along a second direction, which is the direction in which the first wiring boards extend, and are arranged parallel to each other.
- each of the second wiring boards may have a plurality of the second connectors.
- the first connector is a straight type connector mounted on a second main surface of the first wiring board opposite to the first main surface on the probe card side.
- the second connector may be a right angle type connector mounted on the third or fourth main surface of the second wiring board.
- the adjustment mechanism includes a support to which the first wiring board is fixed, and a support on the side of the second wiring board opposite to the first edge on the side of the first wiring board.
- a holding member arranged along a second edge and supported by the support, a fixing member fixed to the second wiring board and having a female screw portion, and the female screw of the fixing member.
- an adjusting screw having a male threaded portion screwed to the portion, inserted through the through hole of the holding member and held by the holding member, and rotating the adjusting screw, A relative position of the second wiring board with respect to the holding member along the first direction may be changed.
- the semiconductor wafer testing apparatus may include a driving device that drives the adjusting mechanism, and a control device that controls the driving device.
- the semiconductor wafer testing apparatus includes a flatness measuring device for measuring flatness of a first main surface on the probe card side of the first wiring board, and the control device comprises , the driving device may be controlled based on the flatness measured by the flatness measuring device.
- the flatness measuring device includes a coordinate measuring unit that measures coordinate values along the first direction at a plurality of locations on the first main surface of the first wiring board; and a calculating unit that calculates the difference of the coordinate values with respect to the reference plane as the flatness.
- a semiconductor wafer test system includes the semiconductor wafer test apparatus described above, and probes for contacting a DUT formed on a semiconductor wafer, and electrically connecting a first wiring board of the semiconductor wafer test apparatus with a probe. and a prober that faces the semiconductor wafer to the probe card and presses the semiconductor wafer against the probe card.
- a flatness measuring apparatus measures the flatness of a first wiring board electrically connected to a probe card having probes that contact DUTs formed on a semiconductor wafer. wherein the first wiring board has a plurality of first connectors to which second connectors of the plurality of second wiring boards are fitted, and the flatness measuring device is and a flatness measuring device for measuring flatness of a first main surface of the first wiring board on the side of the probe card in a state in which the first connector and the second connector are fitted together. .
- the flatness measuring device includes: a coordinate measuring unit for measuring coordinate values along a first direction at a plurality of locations on the first main surface of the first wiring board; and a calculating unit that calculates the difference of the coordinate values with respect to the plane as the flatness, and the first direction may be a normal direction of the first wiring board.
- the first direction may be a direction substantially parallel to the vertical direction.
- a semiconductor wafer test system includes the above semiconductor wafer test apparatus, the above flatness measurement apparatus, and a probe that contacts a DUT formed on a semiconductor wafer.
- a semiconductor wafer testing system comprising: a probe card electrically connected to a first wiring board; and a prober that faces the semiconductor wafer to the probe card and presses the semiconductor wafer against the probe card.
- a flatness adjusting method is an adjusting method for adjusting the flatness of a first wiring board electrically connected to a probe card having probes that contact DUTs formed on a semiconductor wafer. preparing a first wiring board having a plurality of first connectors and a plurality of second wiring boards each having a second connector fitted to the first connector; and a position of the second wiring board along a first direction that is a normal direction of the first wiring board in a state where the first connector and the second connector are fitted together. and adjusting the flatness of the first wiring board by changing .
- the adjusting method includes a measuring step of measuring the flatness of the first main surface on the probe card side of the first wiring board, and the adjusting step comprises:
- the method may include changing a position of the second wiring board along the first direction based on the measurement result.
- a method for adjusting flatness according to the present invention is a method for adjusting flatness of a first wiring board in the above semiconductor wafer testing apparatus, wherein the first wiring board has a plurality of first connectors. and a plurality of second wiring boards each having the second connector fitted to the first connector; and a step of fitting the first connector and the second connector.
- an adjusting step of adjusting the flatness of the first wiring board by changing the position of the second wiring board along the first direction in the mated state The adjusting step is an adjusting method including changing the position of the second wiring board relative to the holding member along the first direction by rotating the adjusting screw.
- the adjusting step rotates the adjusting screw until the fixing member abuts against the front holding member or an intermediate member interposed between the holding member and the fixing member.
- the first direction may be a direction substantially parallel to the vertical direction.
- the semiconductor wafer testing apparatus includes a plurality of adjusting mechanisms for changing the position of the second wiring board along the first direction while the first and second connectors are engaged. It is possible to adjust the flatness of the first wiring board using the first connector mounted on the first wiring board. Therefore, the flatness of the first wiring board can be adjusted without limiting the space on the first wiring board.
- FIG. 1 is a schematic diagram showing a semiconductor wafer testing system according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a connecting portion between a test head and a prober according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view showing the internal structure of the test head according to the first embodiment of the present invention, viewed along direction A in FIG.
- FIG. 4A is a plan view showing the motherboard according to the first embodiment of the present invention;
- FIG. FIG. 4B is a bottom view showing the motherboard according to the first embodiment of the present invention, showing measurement points on the motherboard.
- FIG. 1 is a schematic diagram showing a semiconductor wafer testing system according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a connecting portion between a test head and a prober according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view showing the internal structure of the test head according to the first embodiment
- FIG. 5A is a cross-sectional view showing the connectors mounted on the mother board and the daughter board according to the first embodiment of the present invention, and shows the state before the connectors are fitted.
- FIG. 5B is a cross-sectional view showing the connectors mounted on the motherboard and the daughterboard according to the first embodiment of the present invention, and shows a state in which the connectors are fitted.
- FIG. 6 is an enlarged cross-sectional view corresponding to the VI section of FIG. 3, and is a cross-sectional view taken along the longitudinal direction of the daughter board.
- FIG. 7 is a cross-sectional view showing a first modified example of the adjustment mechanism in the first embodiment of the invention.
- FIG. 8 is a cross-sectional view showing a second modification of the adjustment mechanism in the first embodiment of the invention.
- FIG. 9 is a cross-sectional view showing a flatness measuring device according to the first embodiment of the present invention.
- FIG. 10 is a flow chart showing a flatness adjusting method according to the first embodiment of the present invention.
- FIG. 11 is a diagram showing a flatness measuring device included in the semiconductor wafer testing device according to the second embodiment of the present invention.
- FIG. 12A is a cross-sectional view showing an adjustment mechanism of a semiconductor wafer test system according to a second embodiment of the present invention;
- FIG. 12B is a plan view showing the adjustment mechanism of the semiconductor wafer test system according to the second embodiment of the present invention;
- FIG. 13 is a bottom view showing the motherboard according to the third embodiment of the invention.
- FIG. 1 is a schematic diagram showing a semiconductor wafer testing system according to a first embodiment of the present invention.
- the semiconductor wafer test system 1 in this embodiment is a system for testing DUTs such as IC devices formed on a semiconductor wafer 200 (see FIG. 2).
- the semiconductor wafer testing apparatus 10, a probe card 80, and a prober 90 are provided.
- the semiconductor wafer testing apparatus 10 has a tester 20 and a test head 30 , and the tester 20 is electrically connected to the test head 30 via a cable 21 .
- the test head 30 is turned over by the manipulator 96 from the maintenance position (the position indicated by the dashed line in FIG. 1 ) and placed above the prober 90 .
- FIG. 2 is a cross-sectional view showing the connecting portion between the test head and the prober in this embodiment
- FIG. 3 is a cross-sectional view showing the internal structure of the test head in this embodiment
- 4A and 4B are plan and bottom views showing the motherboard in this embodiment
- FIGS. 5A and 5B are cross-sectional views showing connectors mounted on the motherboard and daughterboard in this embodiment
- FIG. 4] is an enlarged sectional view corresponding to the VI part of FIG. 3.
- the test head 30 includes a motherboard 40 and a plurality of (10 in this embodiment) daughterboards 50 for exchanging test signals with the DUTs on the semiconductor wafer 200.
- the motherboard 40 is fixed to the frame 31 of the test head 30 with bolts (not shown) or the like.
- a plurality of daughterboards 50 are connected to the motherboard 40 via connectors 41 , 51 .
- the motherboard 40 in this embodiment corresponds to an example of the "first wiring board” in the present invention
- the connector 41 in the present embodiment corresponds to an example of the "first connector” in the present invention
- the daughterboard 50 in this embodiment corresponds to an example of the "second wiring board” in the present invention
- the connector 51 in the present embodiment corresponds to an example of the "second connector” in the present invention.
- the motherboard 40 is a printed wiring board having a base material made of, for example, glass epoxy resin.
- the mother board 40 is arranged below the test head 30 with its upper and lower main surfaces 401 and 402 extending in the horizontal direction (XY directions in the figure).
- the Z direction in the drawings of this embodiment corresponds to an example of the "first direction” in the present invention
- the X direction in the drawings of this embodiment corresponds to an example of the "second direction” in the present invention.
- a plurality of connectors 41 are mounted in a matrix on the top surface 401 of the motherboard 40 .
- 320 connectors 41 are arranged in 16 rows and 20 columns on the upper surface 401 of the motherboard 40 so as to correspond to the connectors 51 of the daughterboard 50 .
- Each connector 41 is a receptacle-type connector including a female terminal 411 and a housing 412 holding the female terminal 411, as shown in FIGS. 5A and 5B.
- this connector 41 has a mating direction (insertion/removal direction) with the mating connector 51 that is substantially parallel to the normal direction (Z direction in the figure) of the mounting surface 401 of the mother board 40 (the Z direction in the figure).
- Z direction is a straight type connector.
- a large number of pads are formed in the pad forming area 42 on the lower surface 402 of the motherboard 40.
- the pads are arranged so as to correspond to contacts 851 of an interposer 85 (described later) that electrically connect the motherboard 40 and the probe card 80 .
- other pads such as ground may be formed on the lower surface 402 of the mother board 40 in an area other than the pad forming area 42 .
- the connector 41 mounted on the upper surface 401 of the motherboard 40 and the pads formed on the lower surface 402 of the motherboard 40 are electrically connected via conductive paths such as wiring patterns and through holes formed on the motherboard 40. It is
- Each daughter board 50 is a printed wiring board having a base material made of, for example, glass epoxy resin. As shown in FIGS. 2 and 3, the daughterboard 50 is arranged above the mother board 40 in the test head 30 with main surfaces 501 and 502 extending in the vertical direction (the Z direction in the drawings). It is The plurality of daughterboards 50 are arranged at substantially equal intervals along the X direction in the drawing and arranged parallel to each other.
- a plurality of connectors 51 are mounted on both sides 501 and 502 of this daughter board 50 .
- 16 connectors 51 are mounted on one main surface 501 of the daughterboard 50 at substantially equal intervals along an edge 503 on the lower side of the daughterboard 50 (the side facing the motherboard 40). ing.
- 16 connectors 51 are mounted along the lower edge 503 of the daughterboard 50 at substantially equal intervals.
- Each connector 51 is a plug-type connector comprising a male terminal 511 and a housing 512 holding the male terminal 511, as shown in FIGS. 5A and 5B.
- this connector 51 is configured such that the mating direction (insertion/removal direction) with the mating connector 41 is substantially orthogonal to the normal direction (X direction in the drawing) of the mounting surfaces 501 and 502 of the daughter board 50 ( Z direction in the figure) is a right angle type connector.
- 5A and 5B show only the connector 51 mounted on one main surface 501 of the daughterboard 50, and the connector 51 mounted on the other main surface 502 of the daughterboard 50. FIG. are omitted.
- the connector 51 mounted on the daughter board 50 may be a connector having female terminals.
- the connector 41 mounted on the motherboard 40 becomes a connector having male terminals.
- the motherboard 40 and the plurality of daughterboards 50 are electrically connected by fitting the connectors 41 and 51 together. Specifically, the male terminal 411 of one connector 41 is inserted into the female terminal 511 of the other connector 51, and the terminals 411, 511 are brought into contact with each other, whereby the connectors 41, 51 are electrically connected to each other. ing. As long as the terminals 411, 511 are in contact with each other within the effective mating length ML (see FIG. 5B), the electrical connection between the connectors 41, 51 is maintained.
- the connectors 41 and 51 of this embodiment are LIF (Low Insertion Force) connectors, but are not particularly limited to this, and ZIF (Zero Insertion Force) connectors may be used as the connectors 41 and 51 .
- the number of daughterboards 50 connected to the motherboard 40 is not particularly limited to the above as long as it is plural, and can be set arbitrarily.
- the number of connectors 51 that the daughter board 50 has is not particularly limited to the above, and can be set arbitrarily.
- the connector 51 may be mounted on only one of the main surfaces 501 and 502 of the daughter board 50 .
- the number and arrangement of the connectors 41 mounted on the motherboard 40 are not particularly limited to the above, and are set according to the number and arrangement of the connectors 51 on the daughterboard 50 .
- the probe card 80 includes a plurality of probes 81 electrically contacting DUT pads formed on a semiconductor wafer 200, and a wiring board 82 on which the probes 81 are mounted. .
- the probe 81 is a probe needle formed from a semiconductor substrate such as a silicon substrate using MEMS (Micro Electro Mechanical Systems) technology. Each probe 81 is mounted on the lower surface of the wiring board 82 so that the tip of the probe 81 faces the pad of the semiconductor wafer 200 .
- MEMS Micro Electro Mechanical Systems
- the wiring board 82 is a printed wiring board having a base material made of a material with a relatively small coefficient of thermal expansion, such as ceramics. Although not shown, a wiring pattern is formed on the lower surface of the wiring board 82, and the probes 81 are mounted on the wiring board 82 by connecting to the wiring pattern by soldering or the like. On the other hand, a large number of pads are formed on the upper surface of the wiring board 82 so as to correspond to the contacts 851 of the interposer 85 . The pads formed on the upper surface of the wiring board 82 and the wiring patterns formed on the lower surface of the wiring board 82 are electrically connected through the wiring patterns formed on the wiring board 82 and conductive paths such as through holes. It is connected.
- the configuration of the probe card 80 described above is only an example, and the configuration of the probe card is not particularly limited to the above as long as it is a structure having probes (contactors that come into contact with pads of a DUT formed on a semiconductor wafer).
- the probe card may include a wiring board or a relay member other than the wiring board 82 .
- the configuration of the probe is not particularly limited to the above.
- a vertical type such as a pogo pin or a membrane type in which bumps are formed on an insulating film may be used.
- the interposer 85 includes a large number of conductive contacts 851 and a holder 852 that holds the contacts 851 and has insulation.
- Each contact 851 is a pin with a centrally bent shape. Due to the elastic force of the contactor 851, the upper end of the contactor 851 is in contact with the pad on the lower surface 402 of the motherboard 40, and the lower end of the contactor 851 is in contact with the pad on the upper surface of the wiring board 82 of the probe card 80. is doing.
- the pads of the motherboard 40 and the pads of the wiring board 82 are electrically connected through the contacts 851 .
- the configuration of the interposer is not particularly limited to the above as long as it has a function of electrically relaying between the motherboard 40 and the probe card 80 .
- the interposer 85 may have so-called pogo pins instead of the contacts 851 described above.
- the interposer 85 may be an anisotropically conductive rubber sheet that conducts electricity in the vertical direction when pressure is applied in the thickness direction.
- the interposer 85 may be divided into a plurality of parts.
- the probe card 80 and the motherboard 40 are electrically connected, in addition to the interposer 85 or instead of the interposer 85, a wiring board or the like is provided between the motherboard 40 and the probe card 80. may intervene. Alternatively, the probe card 80 may be directly connected to the motherboard 40 without the interposer 85 interposed.
- the probe card 80 is held by an annular holder 92 with the probes 81 facing downward.
- the holder 92 is held by an annular adapter 93
- the adapter 93 is held by an opening 911 of the top plate 91 of the prober 90 .
- This adapter 93 is for fitting probe cards 80 of different sizes to openings 911 of the prober 90 .
- the probe card 80 and the motherboard 40 are mechanically connected by engaging the hooks 43 provided on the bottom of the motherboard 40 with the hooks 931 provided on the adapter 93 .
- An interposer 85 is interposed between the probe card 80 and the motherboard 40 , and the probe card 80 and the motherboard 40 are electrically connected via the interposer 85 .
- the prober 90 has a transfer arm 95 capable of moving the semiconductor wafer 200 sucked and held by the suction stage 94 in the XYZ directions and rotating ⁇ about the Z axis.
- the transfer arm 95 causes the semiconductor wafer 200 to face the probe card 80 facing the inside of the prober 90 through the opening 911 , and presses the semiconductor wafer 200 against the probe card 80 to form the semiconductor wafer 200 .
- Probes 81 are brought into contact with pads of a plurality of DUTs.
- the tester 20 inputs a test signal to the DUT via the test head 30, receives a response signal from the DUT, and compares the response signal with a predetermined expected value to determine the electrical properties of the DUT. Evaluate the properties.
- test head 30 of this embodiment includes a plurality of adjustment mechanisms 60, as shown in FIGS.
- the mother board 40 to which the plurality of daughterboards 50 are connected via the connectors 41 and 51 may be bent downward due to the pressure of the daughterboards 50 .
- the adjusting mechanism 60 by changing the position of the daughter board 50 in the height direction with the adjusting mechanism 60 in a state where the connectors 41 and 51 are fitted together, deformation such as bending occurring in the mother board 40 is corrected. It is possible.
- Each adjusting mechanism 60 includes a holding member 61, a pair of fixing members 63, and a pair of adjusting screws 64, as shown in FIGS.
- the holding member 61 is a flat bar-shaped member that spans the frame 31 of the test head 30 so as to face the upper surface 401 of the motherboard 40 via the daughterboard 50 .
- the holding member 61 has a flat rectangular cross-sectional shape, but is not particularly limited to this.
- the holding member 61 may have a substantially U-shaped cross-sectional shape with ribs standing on both sides.
- the holding member 61 extends substantially parallel to the daughterboard 50 and is arranged along the upper edge 504 of the daughterboard 50 . Therefore, the daughterboard 50 is interposed between the motherboard 40 and the holding member 61 in the vertical direction.
- Fixing holes 611 are formed at both ends of the holding member 61 so as to pass through the holding member 61 in the vertical direction.
- This holding member 61 is fixed to the frame 31 by a fixing screw 62 inserted through the fixing hole 611 .
- the frame 31 of the test head 30 is used as a support for fixing the holding member 61, but instead of the frame 31, the mother board 40 is relatively (directly or indirectly)
- Other fixed members may be used as supports.
- the holding member 61 is formed with a holding hole 612 penetrating through the holding member 61 in the vertical direction.
- This holding hole 612 is formed at a position corresponding to the fixing member 63 fixed to the daughterboard 50 .
- the fixing members 63 are members fixed to the daughterboard 50 using rivets or the like, and are arranged in the vicinity of the left and right ends (both ends in the Y direction in the figure) of the upper edge 504 on one main surface 501 of the daughterboard 50 . It is Each fixing member 63 is formed with a fixing hole 631 opening at the top thereof along the vertical direction (the Z direction in the drawing), and a female screw portion 632 is formed on the inner peripheral surface of the fixing hole 631 . ing.
- the adjusting screw 64 is a so-called hexagon socket bolt (cap bolt).
- the adjusting screw 64 is inserted into the holding hole 612 of the holding member 61 and screwed into the fixing member 63 .
- each adjusting screw 64 has a head portion 641 and a shaft portion 643 .
- a head 641 of the adjusting screw 64 has an outer diameter larger than the inner diameter of the holding hole 612 of the holding member 61 .
- the shaft portion 643 of the adjusting screw 64 has an outer diameter smaller than the inner diameter of the holding hole 612 . Therefore, while the shaft portion 643 of the adjusting screw 64 is inserted into the holding hole 612 of the holding member 61, the bearing surface 642 of the head portion 641 of the adjusting screw 64 is in contact with the holding member 61. The screw 64 is held by the holding member 61 .
- the male screw portion 644 of the shaft portion 643 of the adjustment screw 64 is inserted into the fixing hole 631 of the fixing member 63 and screwed with the female screw portion 632 .
- the fixing member 63 approaches the holding member 61 holding the adjusting screw 64 and the daughter board 50 rises relative to the holding member 61 .
- the mother board 40 is also pulled up through the daughter board 50 by the rotation of the adjusting screw 64 .
- deformation such as bending occurring in the motherboard 40 can be corrected.
- the mating of the connectors 41 and 51 is maintained while the adjusting screw 64 rotates. (the force required to pull out the connector 41 from the connector 51). Therefore, by rotating the adjusting screw 64 , the connector 51 of the daughterboard 50 can be raised relative to the connector 41 of the motherboard 40 while also pulling up the motherboard 40 via the daughterboard 50 . As a result, the weight of the daughterboard 50 can be released to the frame 31 via the holding member 61, so that the flatness of the motherboard 40 can be further improved. At this time, in order to ensure electrical connection between the connectors 41 and 51, it is preferable that the amount of rise of the daughter board 50 due to the rotation of the adjusting screw 64 is smaller than the effective mating length ML of the connectors 41 and 51.
- the pull-out force of the connectors 41 and 51 may be equal to or greater than the pull-up force of the daughter board 50 due to the rotation of the adjusting screw 64 .
- the configuration of the adjustment mechanism 60 described above is not particularly limited as long as it is a mechanism capable of raising and/or lowering the daughterboard 50 .
- the adjustment mechanism may have a configuration as shown in FIG. 7 or FIG.
- FIG. 7 is a cross-sectional view showing a first modified example of the adjusting mechanism according to this embodiment
- FIG. 8 is a cross-sectional view showing a second modified example of the adjusting mechanism according to this embodiment.
- the adjustment mechanism 60 described above only has the function of raising the daughterboard 50, whereas the adjustment mechanism 60B shown in FIG. 7 only has the function of lowering the daughterboard 50.
- the fixing member 63 is not formed with a female screw portion, but the female screw portion 613 is formed on the inner peripheral surface of the holding hole 612 of the holding member 61, and the tip of the adjusting screw 64 is attached to the fixing member. 63.
- the tip of the adjusting screw 64 pushes down the daughter board 50 via the fixing member 63 .
- the adjustment mechanism 60C shown in FIG. 8 has both functions of raising and lowering the daughterboard 50.
- the adjustment mechanism 60C includes a coil spring 65 interposed between the holding member 61 and the fixing member 63.
- a coil spring 65 interposed between the holding member 61 and the fixing member 63.
- another elastic member such as a spring washer, a wave washer, or a disc spring washer may be interposed between the holding member 61 and the fixing member 63.
- the adjusting mechanism 60 is provided with an adjusting nut instead of the adjusting screw 64, and a shaft having a male thread formed thereon protrudes upward from the fixing member 63 and extends through the holding hole 612 of the holding member 61. and an adjusting nut is screwed onto the shaft.
- FIG. 9 is a cross-sectional view showing a flatness measuring device according to this embodiment.
- the semiconductor wafer testing system 1 of this embodiment includes a flatness measuring device 100 independent of the semiconductor wafer testing device 10 and the prober 90 .
- This flatness measuring apparatus 100 is an apparatus for measuring the flatness of the mother board 40 with the mother board 40 mounted on the test head 30 . Note that the flatness measuring apparatus 100 may not be included in the semiconductor wafer test system 1, and may be installed alone in the factory, for example.
- the motherboard 40 when the motherboard 40 is attached to the test head 30, the plurality of daughterboards 50 are already connected to the motherboard 40 via the connectors 41 and 51, and the motherboard 40 is connected to the motherboard 40 by pressing the daughterboards 50. A downward deflection may occur. Therefore, in this embodiment, before connecting the test head 30 to the prober 90, the flatness of the motherboard 40 mounted on the test head 30 is measured by the flatness measuring device 100, and the adjustment mechanism 60 is used to measure the flatness. to flatten the motherboard 40 .
- a specific timing for flattening the motherboard 40 is not particularly limited, but may be, for example, the time when the test head 30 is shipped or the time when the motherboard 40 is replaced.
- the flatness of the motherboard 40 is the amount of deviation of the bottom surface 402 of the motherboard 40 from a geometrically correct reference plane. Specifically, the flatness in this embodiment is represented by a set of differences in the Z direction of the lower surface 402 of the motherboard 40 with respect to the approximate plane (reference plane) at the specific points SP 1 to SP 17 , as will be described later. .
- the flatness measuring device 100 includes a frame 110, a measuring section 120, a moving device 130, and a computing section 140, as shown in FIG.
- the frame 110 can hold the test head 30 with the lower surface 402 of the motherboard 40 facing downward.
- the measuring unit 120 and the moving device 130 are arranged within this frame 110 .
- the measurement unit 120 irradiates specific points SP 1 to SP 17 on the lower surface 402 of the motherboard 40 with laser light, and acquires the coordinate values of the specific points SP 1 to SP 17 in the Z direction from the reflected light. It is a laser displacement meter that Note that the measuring unit 120 is not limited to a laser displacement gauge as long as it can measure the coordinate values of the specific points SP 1 to SP 17 on the bottom surface 402 of the motherboard 40 in the height direction.
- the moving device 130 is a device that moves the measuring section 120 in the XY directions, and is composed of, for example, a linear guide, a ball screw mechanism, a motor, and the like.
- the measuring unit 120 is moved by the moving device 130 to a position facing the specific points SP 1 to SP 17 of the mother board 40 in the XY directions.
- the moving device 130 is not particularly limited to the above as long as it can move the measuring unit 120 in the XY directions.
- a robot arm may be used as the moving device 130 .
- the computing unit 140 is composed of, for example, a computer. This calculation unit 140 calculates the flatness of the lower surface 402 of the motherboard 40 based on the measurement result of the measurement unit 120 . A specific method of calculating the flatness by the calculation unit 140 will be described later.
- FIG. 10 is a flow chart showing a flatness adjusting method according to the present embodiment.
- the flatness calculation method described below is merely an example, and is not particularly limited to this.
- the method described in the third embodiment, which will be described later, may be used, or the flatness may be calculated by another method.
- step S10 of FIG. 10 the test head 30 with the mother board 40 attached is prepared. Specifically, in this test head 30 , the mother board 40 is fixed to the frame 31 of the test head 30 , and the connector 41 of the mother board 40 is fitted with the connector 51 of the daughter board 50 .
- step S20 of FIG. 10 coordinate values in the Z direction of 17 specific points SP 1 to SP 17 on the bottom surface 402 of the motherboard 40 are measured.
- pads are present at these specific points SP 1 to SP 17 , respectively . It is a coordinate value in the Z direction.
- the test head 30 prepared in step S ⁇ b>10 described above is supported by the frame 110 of the flatness measuring apparatus 100 .
- the moving device 130 moves the measuring unit 120 to a position facing the specific point SP1, and the measuring unit 120 acquires the Z coordinate value of this specific point SP1.
- the moving device 130 sequentially moves the measuring unit 120 to positions facing the next specific points SP 2 to SP 17 , and the measuring unit 120 sequentially acquires the Z coordinate values of the specific points SP 2 to SP 17 .
- the Z-coordinate values of the specific points SP 1 to SP 17 are sequentially output from the measurement section 120 to the calculation section 140 .
- the positions of the specific points on the lower surface 402 of the motherboard 40 are not limited to the specific points SP 1 to SP 17 described above. Also, the number of specific points on the lower surface 402 of the motherboard 40 is not particularly limited to the above. For example, a position corresponding to the connector 41 on the bottom surface 402 of the motherboard 40 may be the specific point measured by the measuring unit 120 .
- step S40 of FIG. An approximate plane is created, and in step S50 of FIG. 10, the calculation unit 140 calculates the amount of deformation in the Z direction at each of the specific points SP 1 to SP 17 .
- the X-coordinate value and Y-coordinate value of the specific points SP 1 to SP 17 are preset known coordinate values.
- the calculation unit 140 calculates an approximate plane passing through the specific points SP 1 to SP 17 using the method of least squares or the like (step S40). Next, the calculation unit 140 extracts Z-direction coordinate values of positions corresponding to the specific points SP 1 to SP 17 on the approximate plane. Next, the calculation unit 140 calculates the difference (deformation amount) between the actual Z-coordinate value of the lower surface 402 of the motherboard 40 and the Z-coordinate value on the approximate plane for all of the specific points SP 1 to SP 17 as the degree of flatness. (step S50).
- step S60 of FIG. 10 the motherboard 40 is flattened by the adjustment mechanism 60 based on the amount of deformation described above.
- the operator pulls up the daughter board 50 by rotating the adjusting screw 64 of the adjusting mechanism 60 in the tightening direction (clockwise).
- a shim 66 (a member indicated by a broken line in FIG. 6) is interposed between the holding member 61 and the fixing member 63 , and the operator continues to rotate the adjusting screw 64 until the fixing member 63 contacts the shim 66 . to rotate.
- This shim 66 is selected to have a thickness such that the amount of pulling up is an amount that eliminates the amount of deformation. selected individually for
- the relationship between the amount of deformation at the specific points SP 1 to SP 17 and the amount of lifting of the daughterboard 50 (thickness of shim 66) by each adjustment mechanism 60 required to eliminate the amount of deformation is shown.
- the table may be created in advance through experiments or the like.
- a table is created in advance showing the correspondence between the amount of deformation at the specific points SP 1 to SP 17 and the amount of rotation of the adjustment screw 64 of each adjustment mechanism 60 required to eliminate the amount of deformation.
- the adjustment mechanism 60 may be operated without the shim 66.
- the operator operates the adjustment mechanism 60 while measuring the deformation amounts at the specific points SP 1 to SP 17 with the flatness measuring device 100, so that the deformation amounts at the specific points SP 1 to SP 17 are substantially zero.
- the operator may rotate the adjusting screw 64 until the
- a shim may be interposed between the holding member 61 and the frame 31 to increase the distance between the holding member 61 and the fixed member 63 .
- the test head 30 includes a plurality of adjustment mechanisms 60 that change the position of the daughterboard 50 in the height direction while the connectors 41 and 51 are engaged.
- the motherboard 40 can be flattened by using the connector 41 mounted on the . Therefore, the flatness of the motherboard 40 can be adjusted without limiting the space on the motherboard 40 .
- FIG. 11 is a diagram showing a flatness measuring device included in the semiconductor wafer testing apparatus according to this embodiment
- FIGS. 12A and 12B are cross-sectional and plan views showing an adjusting mechanism of the semiconductor wafer testing system according to this embodiment.
- This embodiment differs from the above-described first embodiment in that (1) the flatness measuring apparatus 100B is incorporated in the semiconductor wafer testing apparatus 10B and (2) the operation of the adjusting mechanism 60 is automated.
- other configurations are the same as those of the first embodiment.
- the semiconductor wafer test system of the second embodiment will be described only with respect to the differences from the first embodiment, and the same reference numerals will be given to the parts having the same configuration as in the first embodiment, and the description thereof will be omitted. do.
- the semiconductor wafer testing apparatus 10B in this embodiment includes a flatness measuring apparatus 100B in addition to the tester 20 and the test head 30.
- This flatness measuring apparatus 100B includes a measuring section 120, a robot arm 130B, and a computing section 140 (not shown in FIG. 11).
- the measurement unit 120 is attached to the tip of the robot arm 130B.
- the robot arm 130B is connected, for example, to the side of the test head 30, and is capable of moving the measuring section 120 in the XYZ directions.
- the robot arm 130B sequentially moves the measurement unit 120 to positions facing the specific points SP 1 to SP 17 .
- the measuring unit 120 sequentially acquires the Z coordinate values of the specific points SP 1 to SP 17 and sequentially outputs the Z coordinate values of the specific points SP 1 to SP 17 to the computing unit 140.
- the calculation unit 140 calculates the amount of deformation in the Z direction at each of the specific points SP 1 to SP 17 .
- the flatness measuring apparatus 100B may be provided with another moving device capable of moving the measuring section 120 at least in the XY directions instead of the robot arm 130B. Further, although the flatness measuring device 100B is attached to the test head 30 in this embodiment, the flatness measuring device 100B may be provided in the prober 90. FIG. In this case, the prober 90 is equipped with the flatness measuring device 100B.
- the semiconductor wafer testing apparatus 10B in this embodiment includes a driving device 70 that drives the adjusting mechanism 60 and a control device 75 that controls the driving device 70. .
- the driving device 70 includes a worm wheel 71, a worm gear 72, and a motor 73.
- the worm wheel 71 is fixed to the head 641 of the adjusting screw 64 .
- a worm gear 72 meshes with the worm wheel 71 and is connected to a drive shaft of a motor 73 via a shaft 74 .
- the drive device 70 may be provided individually for each adjustment mechanism 60 .
- multiple adjusting mechanisms 60 may be driven by the same driving device 70 .
- a plurality of adjustment screws 64 arranged at one end (+Y direction side in the drawing) of the plurality of daughterboards 50 are driven by one driving device 70, and the other (-Y direction side in the drawing) of the daughterboard 50 is driven.
- a plurality of adjusting screws 64 arranged at the end (direction side) may be driven by another driving device 70 .
- the configuration of the driving device 70 is not particularly limited to the above as long as the adjustment screw 64 is automatically operated. Also, the configuration of the adjusting mechanism and the driving device is not particularly limited as long as the daughter board 50 can be automatically raised and/or lowered.
- a ball screw mechanism and a motor coupled to the daughterboard 50 may constitute the adjusting mechanism and the driving device.
- the control device 75 is composed of, for example, a computer.
- the control device 75 calculates, for each adjustment mechanism 60, the lifting amount (rotation amount of the adjusting screw 64) of the daughter board 50 that eliminates the deformation amount calculated by the calculation unit 140 of the flatness measuring device 100B.
- the driving device 70 is controlled so that the adjustment mechanism 60 is driven by the amount.
- the test head 30 has a plurality of adjustment mechanisms for changing the position of the daughter board 50 in the height direction while the connectors 41 and 51 are engaged. 60 , and the motherboard 40 can be flattened using the connector 41 mounted on the motherboard 40 . Therefore, the flatness of the motherboard 40 can be adjusted without limiting the space on the motherboard 40 .
- the flattening work of the motherboard 40 is entirely automated, but it is not particularly limited to this.
- the semiconductor wafer testing apparatus 10B includes the flatness measuring apparatus 100B, the driving device 70 and the control device 75 may not be provided, and the adjustment mechanism 60 may be operated manually.
- the semiconductor wafer testing apparatus 10B includes the driving apparatus 70 and the control apparatus 75, it may not include the flatness measuring apparatus 100B.
- the semiconductor wafer test apparatus 10B of the present embodiment includes the adjustment mechanism 60 shown in FIG. 6, but is not particularly limited to this.
- an adjustment mechanism 60B shown in FIG. 8 or an adjustment mechanism 60C shown in FIG. 8 may be provided.
- FIG. 13 is a bottom view showing the motherboard in this embodiment.
- the method of calculating the flatness of the mother board 40 is different from that of the above-described first embodiment, but the rest of the configuration is the same as that of the first embodiment.
- the semiconductor wafer testing system of the third embodiment will be described only with respect to the points of difference from the first embodiment. do.
- the flatness of the motherboard 40 is measured using the strain gauges 120a to 120j instead of the coordinate values of the specific points SP 1 to SP 17 on the bottom surface 402 of the motherboard 40 in the Z direction.
- strain gauges 120a to 120j are attached to specific points on the lower surface 402 of the motherboard 40 mounted on the test head 30.
- the strain gauges 120a to 120j include a plurality of sets arranged point-symmetrically with respect to the center of the pad forming region 42 of the motherboard 40.
- the resistance values of the strain gauges 120a to 120j are measured, the difference between the resistance value and the reference value is calculated, and the flatness of the lower surface 402 of the motherboard 40 is calculated from the difference and the direction of each strain. do.
- the strain gauges 120a to 120j themselves may be formed on the motherboard 40 in advance.
- the reference values to be compared with the resistance values of the strain gauges 120a to 120j are the resistance values measured by the strain gauges 120a to 120j attached to the motherboard 40 before the motherboard 40 is attached to the test head 30. Therefore, the flatness of the motherboard 40 in this embodiment is represented by a set of differences between the distortion (reference resistance value) when flat at a specific point and the actual distortion (measured resistance value).
- this reference value is not particularly limited to the above, and can be obtained by measuring the motherboard 40 when the motherboard 40 is sufficiently flattened with the motherboard 40 attached to the test head 30. You may use the resistance value obtained as a reference value.
- the operator operates the adjusting mechanism 60 based on the flatness calculated using the strain gauges 120a to 120j.
- a shim is interposed between the holding member 61 and the fixing member 63, and the operator rotates the adjusting screw 64 until the fixing member 63 contacts the shim.
- a table showing the correspondence relationship between the difference in the resistance values of the strain gauges 120a to 120j and the lifting amount (shim thickness) of the daughterboard 50 by each adjustment mechanism 60 required to eliminate the difference is It may be created in advance by experiment or the like.
- a table showing the correspondence relationship between the difference in the resistance values of the strain gauges 120a to 120j and the amount of rotation of the adjustment screw 64 of each adjustment mechanism 60 required to eliminate the difference is created in advance,
- the adjustment mechanism 60 may be operated without using shims.
- the operator operates the adjusting mechanism 60 while measuring the resistance values of the strain gauges 120a to 120j, and the operator tightens the adjusting screw 64 until the difference in the resistance values of the strain gauges 120a to 120j becomes substantially zero. You can rotate it.
- the test head 30 has a plurality of adjustment mechanisms for changing the position of the daughter board 50 in the height direction while the connectors 41 and 51 are engaged. 60 , and the motherboard 40 can be flattened using the connector 41 mounted on the motherboard 40 . Therefore, the flatness of the motherboard 40 can be adjusted without limiting the space on the motherboard 40 .
- the test head 30 is held with the main surface 402 of the motherboard 40 facing downward during flattening, but the orientation of the test head 30 is not particularly limited to this.
- the test head 30 may be held in such a posture that the main surface 402 of the motherboard 40 faces the lateral direction during flattening.
- the configuration of the semiconductor wafer test system 1 described above is merely an example, and is not particularly limited to this.
- the mechanical connection structure between the test head 30 and the prober 90 described above is merely an example, and is not particularly limited to this.
- test head 30 may incorporate the functionality of tester 20, ie, tester 20 and test head 30 may be integrated.
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Abstract
Description
図1は本発明の第1実施形態における半導体ウェハ試験システムを示す概略図である。
図11は本実施形態における半導体ウェハ試験装置が備える平坦度測定装置を示す図であり、図12A及び図12Bは本実施形態における半導体ウェハ試験システムの調整機構を示す断面図及び平面図である。
図13は本実施形態におけるマザーボードを示す底面図である。
10…半導体ウェハ試験装置
20…テスタ
30…テストヘッド
31…フレーム
40…マザーボード
41…コネクタ
SP1~SP17…特定点
50…ドータボード
51…コネクタ
60…調整機構
61…保持部材
62…固定ネジ
63…固定部材
632…雌ネジ部
64…調整ネジ
644…雄ネジ部
70…駆動装置
71…ウォームホイール
72…ウォームギア
73…モータ
75…制御装置
80…プローブカード
81…プローブ
82…配線板
85…インタポーザ
90…プローバ
100…平坦度測定装置
120…測定部
130…移動装置
140…演算部
200…半導体ウェハ
Claims (16)
- 半導体ウェハに形成されたDUTを試験する半導体ウェハ試験装置であって、
前記DUTに接触するプローブを有するプローブカードと電気的に接続可能であると共に、複数の第1のコネクタを有する第1の配線板と、
前記第1のコネクタに嵌合している第2のコネクタをそれぞれ有する複数の第2の配線板と、
前記第1のコネクタと前記第2のコネクタが嵌合している状態で、前記第1の配線板の法線方向である第1の方向に沿った前記第2の配線板の位置を変化させることで、前記第1の配線板の平坦度を調整する複数の調整機構と、を備えた半導体ウェハ試験装置。 - 請求項1に記載の半導体ウェハ試験装置であって、
前記第1の方向は、鉛直方向に対して実質的に平行な方向である半導体ウェハ試験装置。 - 請求項1又は2に記載の半導体ウェハ試験装置であって、
前記第1の配線板は、前記第1の方向に実質的に直交する第2の方向に沿って延在し、
前記第2の配線板は、前記第1の方向に実質的に平行な方向に沿って延在しており、
前記第1のコネクタと前記第2のコネクタとの嵌合方向は、前記第1の方向に実質的に平行な方向である半導体ウェハ試験装置。 - 請求項1~3のいずれか一項に記載の半導体ウェハ試験装置であって、
前記複数の第2の配線板は、前記第1の配線板の延在方向である第2の方向に沿って間隔を空けて並べられており、相互に平行に配置されている半導体ウェハ試験装置。 - 請求項1~4のいずれか一項に記載の半導体ウェハ試験装置であって、
それぞれの前記第2の配線板は、複数の前記第2のコネクタを有している半導体ウェハ試験装置。 - 請求項1~5のいずれか一項に記載の半導体ウェハ試験装置であって、
前記第1のコネクタは、前記第1の配線板において前記プローブカード側の第1の主面とは反対側の第2の主面に実装されたストレートタイプのコネクタであり、
前記第2のコネクタは、前記第2の配線板の第3の主面又は第4の主面に実装されたライトアングルタイプのコネクタである半導体ウェハ試験装置。 - 請求項1~6のいずれか一項に記載の半導体ウェハ試験装置であって、
前記調整機構は、
前記第1の配線板が固定された支持体と、
前記第2の配線板において前記第1の配線板側の第1の縁とは反対側の第2の縁に沿うように配置され、前記支持体に支持された保持部材と、
前記第2の配線板に固定されていると共に雌ネジ部を有する固定部材と、
前記固定部材の前記雌ネジ部に螺合している雄ネジ部を有し、前記保持部材の貫通孔に挿通されていると共に前記保持部材に保持されている調整ネジと、を含み、
前記調整ネジを回転させることで、前記保持部材に対する前記第2の配線板の前記第1の方向に沿った相対的な位置を変化させる半導体ウェハ試験装置。 - 請求項1~7のいずれか一項に記載の半導体ウェハ試験装置であって、
前記半導体ウェハ試験装置は、
前記調整機構を駆動させる駆動装置と、
前記駆動装置を制御する制御装置と、を備えた半導体ウェハ試験装置。 - 請求項8に記載の半導体ウェハ試験装置であって、
前記半導体ウェハ試験装置は、前記第1の配線板において前記プローブカード側の第1の主面の平坦度を測定する平坦度測定装置を備えており、
前記制御装置は、前記平坦度測定装置により測定された前記平坦度に基づいて前記駆動装置を制御する半導体ウェハ試験装置。 - 請求項1~9のいずれか一項に記載の半導体ウェハ試験装置と、
半導体ウェハに形成されたDUTに接触するプローブを有し、前記半導体ウェハ試験装置の第1の配線板に電気的に接続されたプローブカードと、
前記半導体ウェハを前記プローブカードに対向させ、前記半導体ウェハをプローブカードに押し付けるプローバと、を備えた半導体ウェハ試験システム。 - 半導体ウェハに形成されたDUTに接触するプローブを有するプローブカードと電気的に接続される第1の配線板の平坦度を測定する平坦度測定装置であって、
前記第1の配線板は、複数の第2の配線板がそれぞれ有する第2のコネクタが嵌合している複数の第1のコネクタを有しており、
前記平坦度測定装置は、前記第1のコネクタと前記第2のコネクタが嵌合している状態で、前記第1の配線板において前記プローブカード側の第1の主面の平坦度を測定する平坦度測定装置。 - 請求項11に記載の平坦度測定装置であって、
前記平坦度測定装置は、
前記第1の配線板の前記第1の主面における複数の個所の第1の方向に沿った座標値を測定する座標測定部と、
基準平面に対する前記座標値の差分を前記平坦度として算出する算出部と、を備えており、
前記第1の方向は、前記第1の配線板の法線方向である平坦度測定装置。 - 請求項1~7のいずれか一項に記載の半導体ウェハ試験装置と、
請求項11又は12に記載の平坦度測定装置と、
半導体ウェハに形成されたDUTに接触するプローブを有し、前記半導体ウェハ試験装置の第1の配線板に電気的に接続されたプローブカードと、
前記半導体ウェハを前記プローブカードに対向させ、前記半導体ウェハをプローブカードに押し付けるプローバと、を備えた半導体ウェハ試験システム。 - 半導体ウェハに形成されたDUTに接触するプローブを有するプローブカードと電気的に接続される第1の配線板の平坦度を調整する調整方法であって、
複数の第1のコネクタを有する前記第1の配線板と、前記第1のコネクタに嵌合している第2のコネクタをそれぞれ有する複数の第2の配線板と、を準備する準備工程と、
前記第1のコネクタと前記第2のコネクタが嵌合している状態で、前記第1の配線板の法線方向である第1の方向に沿った前記第2の配線板の位置を変化させることで、前記第1の配線板の平坦度を調整する調整工程と、を備えた調整方法。 - 請求項14に記載の調整方法であって、
前記調整方法は、前記第1の配線板において前記プローブカード側の第1の主面の平坦度を測定する測定工程を備え、
前記調整工程は、前記測定工程での測定結果に基づいて、前記第1の方向に沿った前記第2の配線板の位置を変化させることを含む調整方法。 - 請求項7に記載の半導体ウェハ試験装置における第1の配線板の平坦度の調整方法であって、
複数の第1のコネクタを有する前記第1の配線板と、前記第1のコネクタに嵌合している前記第2のコネクタをそれぞれ有する複数の第2の配線板と、を準備する準備工程と、
前記第1のコネクタと前記第2のコネクタが嵌合している状態で、前記第1の方向に沿った前記第2の配線板の位置を変化させることで、前記第1の配線板の平坦度を調整する調整工程と、を備えており、
前記調整工程は、前記調整ネジを回転させることで、前記保持部材に対する前記第2の配線板の前記第1の方向に沿った相対的な位置を変化させることを含む調整方法。
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