WO2007077743A1 - プローブカード - Google Patents
プローブカード Download PDFInfo
- Publication number
- WO2007077743A1 WO2007077743A1 PCT/JP2006/325431 JP2006325431W WO2007077743A1 WO 2007077743 A1 WO2007077743 A1 WO 2007077743A1 JP 2006325431 W JP2006325431 W JP 2006325431W WO 2007077743 A1 WO2007077743 A1 WO 2007077743A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- probe
- probe head
- space transformer
- positioning
- semiconductor wafer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- 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
- G01R1/07364—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 with provisions for altering position, number or connection of probe tips; Adapting to differences in pitch
- G01R1/07378—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 with provisions for altering position, number or connection of probe tips; Adapting to differences in pitch using an intermediate adapter, e.g. space transformers
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- H10P74/00—
-
- 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
- G01R1/44—Modifications of instruments for temperature compensation
-
- 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]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2874—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to temperature
Definitions
- the present invention relates to a probe card that electrically connects a semiconductor wafer to be inspected and a circuit structure that generates a signal for inspection.
- a continuity inspection may be performed by contacting a conductive probe (conductive contactor) in the state of a semiconductor wafer before dicing to detect defective products ( WLT: Wafer Level Test).
- WLT Wafer Level Test
- a probe card containing a large number of probes is used to transmit a signal for inspection generated and transmitted by an inspection device (tester) to a semiconductor wafer.
- tester an inspection device
- WLT Wafer Level Test
- FIG. 17 is a diagram schematically showing the configuration of the main part of the probe card applied in the above-described FWLT.
- the probe card 41 shown in the figure includes a plurality of probes 42 arranged corresponding to the electrode pads 101 provided on the semiconductor wafer 100, a probe head 43 that accommodates the probes 42, and a fine wiring pattern in the probe head 43.
- a space transformer 44 which is a relay board for relaying by changing the distance between the two. Space transformer
- the former 44 is provided with an electrode node 45 at a position corresponding to the probe 42 accommodated in the probe head 43, and the tip of the probe 42 is in contact with the electrode pad 45.
- wiring having a pattern corresponding to the electrode pad 45 is provided in the space transformer 44 (not shown). This wiring is connected to the inspection board via the interposer (interposer and board not shown).
- Patent Document 1 Japanese Patent Laid-Open No. 2003-240801
- the inspection of the semiconductor wafer 100 is performed under a plurality of different temperature environments. For this reason, in the probe card 41, the difference in the value of the coefficient of thermal expansion (CTE) that the probe head 43, the space transformer 44, and the semiconductor wafer 100 respectively have becomes a problem.
- CTE coefficient of thermal expansion
- the state shown in FIG. 17 is assumed to be in a room temperature environment (about 25 ° C.).
- the thermal expansion coefficient of the probe head 43 is C
- the thermal expansion coefficient of the space transformer 44 is C
- the heat of the semiconductor wafer 100 is
- the degree of thermal expansion of the probe head 43, the space transformer 44, and the semiconductor wafer 100 differs as shown in FIG.
- the probe 42 could not contact the electrode pad 101 of the semiconductor wafer 100 or the electrode pad 45 of the space transformer 44.
- the probe card is configured by stacking a plurality of members having different thermal expansion coefficients, it is inevitable that the degree of expansion of each member varies depending on the temperature environment at the time of inspection. . Therefore, in order to improve the forceful situation, there is a need for a technique that can reliably bring the probe into contact with the contact object regardless of the temperature environment at the time of inspection.
- the present invention has been made in view of the above, and provides a probe card that can reliably bring a probe into contact with a contact object regardless of the temperature environment at the time of inspection. aimed to.
- the invention according to claim 1 is an electrical connection between a semiconductor wafer to be inspected and a circuit structure for generating a signal for inspection.
- This probe card is made of a conductive material, and accommodates and holds a plurality of probes that input or output electrical signals in contact with the electrode pads of the semiconductor wafer, and the plurality of probes.
- a probe head, a substrate having a wiring pattern corresponding to the circuit structure, and the probe head are stacked on the probe head and relayed at different intervals of the wiring pattern, and the probe corresponding to the relayed wiring
- the average temperature of the highest temperature Te Contact ⁇ the environment with the semiconductor wafer and the space transformer, characterized in that the contact in the vicinity of the center portion of the electrode pad having respectively.
- the invention according to claim 2 is the invention according to claim 1, further comprising a plurality of positioning pins fixed to the space transformer to position the space transformer and the probe head.
- the head has a plurality of positioning holes through which the plurality of positioning pins are inserted, and at least one of the plurality of positioning holes has a long hole shape whose longitudinal length is larger than the diameter of the positioning pins. It is characterized by doing.
- the invention according to claim 3 is a probe card for electrically connecting a semiconductor wafer to be inspected and a circuit structure for generating an inspection signal, which is made of a conductive material, and the semiconductor A plurality of probes that input or output electrical signals in contact with electrode pads of a wafer, a probe head that accommodates and holds the plurality of probes, a substrate that has a wiring pattern corresponding to the circuit structure, and the probe head And a space transformer having an electrode pad provided on the surface facing the probe head corresponding to the relayed wiring, and the space transformer. A plurality of spaces fixed to the transformer to position the space transformer and the probe head.
- the probe head has a plurality of positioning holes through which the plurality of positioning pins are inserted, and at least one of the plurality of positioning holes has a length in the longitudinal direction larger than the diameter of the positioning pin. It has a long hole shape.
- the invention according to claim 4 is the invention according to claim 2 or 3, wherein the surface of the probe head has a centrally symmetric shape, and a pair of diagonal lines passing through the center of the surface.
- the positioning pin is passed through, and the positioning hole passing through one of the pair of positioning pins has a length in a direction parallel to the diagonal line larger than the diameter of the positioning pin.
- the invention according to claim 5 is the invention according to claim 2 or 3, wherein the surface of the probe head has a centrally symmetric shape, and a plurality of positions are provided at positions symmetrical with respect to the center of the surface.
- the positioning hole through which the positioning pin is inserted is characterized in that the radial length in which the central force of the surface spreads radially is larger than the diameter of the positioning pin.
- the invention of claim 6 is the invention of any one of claims 1 to 3, comprising: a reinforcing member attached to the substrate to reinforce the substrate; and a conductive material; An interposer that relays the wiring of the board interposed between the space transformer, a holding member that is fixed to the board and holds the interposer and the space transformer by applying pressure thereto, and the holding member A leaf spring that is fixed and presses the vicinity of the edge of the surface of the probe head from which the plurality of probes protrudes in the direction of the substrate over the entire circumference. And
- a plurality of probes that are made of a conductive material and that input or output an electric signal in contact with an electrode pad included in the semiconductor wafer and the plurality of probes are accommodated.
- a space transformer having an electrode pad provided on the surface facing the probe head; And both ends of the probe are arranged at the center part of the electrode pad respectively included in the semiconductor wafer and the space transformer in an environment having an average temperature of the lowest temperature and the highest temperature when the semiconductor wafer is inspected.
- the probe card includes a plurality of positioning pins that are fixed to the space transformer and positions the space transformer and the probe head, and the probe head includes the plurality of positioning pins.
- Each of the plurality of positioning holes has a long hole shape in which the length in the longitudinal direction is larger than the diameter of the positioning pin. The probe can be reliably brought into contact with the contact object regardless of the environment, and the probe card can be prevented from being damaged due to thermal expansion.
- FIG. 1 is an exploded perspective view showing a configuration of a probe card according to Embodiment 1 of the present invention.
- FIG. 2 is a top view showing a configuration of a probe card according to Embodiment 1 of the present invention.
- FIG. 3 is a diagram showing an outline of inspection using the probe card according to Embodiment 1 of the present invention.
- FIG. 4A is a diagram showing a configuration of a main part of the probe card in a minimum temperature environment.
- FIG. 4B is a diagram showing the configuration of the main part of the probe card under an average temperature environment.
- FIG. 4C is a diagram showing the configuration of the main part of the probe card under the maximum temperature environment.
- FIG. 5 is a diagram showing a configuration of a main part of a probe card according to a modification of the first embodiment of the present invention.
- FIG. 6 is a diagram showing a configuration of the main part of the probe card according to Embodiment 2 of the present invention under a minimum temperature environment.
- FIG. 7 is a diagram schematically showing a cross section taken along line BB in FIG.
- FIG. 8 shows an average temperature environment of the main part of the probe card according to the second embodiment of the present invention.
- FIG. 9 is a diagram schematically showing a cross section taken along the line CC of FIG.
- FIG. 10 is a diagram showing a configuration of the main part of the probe card according to Embodiment 2 of the present invention under a maximum temperature environment.
- FIG. 11 is a diagram schematically showing a cross section taken along the line D-D in FIG.
- FIG. 12 is a diagram showing a configuration of a main part of a probe card according to a modification of the second embodiment of the present invention.
- FIG. 13 is a diagram showing a configuration of the main part of the probe card according to Embodiment 3 of the present invention under a minimum temperature environment.
- FIG. 14 is a diagram schematically showing a cross section taken along line EE of FIG.
- FIG. 15 is a diagram showing a configuration of the main part of the probe card according to Embodiment 3 of the present invention under an average temperature environment.
- FIG. 16 is a diagram showing a configuration of the main part of the probe card according to Embodiment 3 of the present invention under a maximum temperature environment.
- FIG. 17 is a diagram schematically showing a configuration of a main part of a conventional probe card.
- FIG. 18 is a diagram schematically showing a configuration of a main part of a conventional probe card in a high temperature environment.
- FIG. 1 is an exploded perspective view showing the configuration of the main part of the probe card according to Embodiment 1 of the present invention.
- FIG. 2 is a top view of the probe card according to the first embodiment.
- FIG. 3 is a diagram showing an outline of the inspection using the probe card according to the first embodiment, and the probe card is a diagram schematically showing a cross section taken along line AA of FIG.
- the probe card 1 shown in FIGS. 1 to 3 uses a plurality of probes to electrically connect a semiconductor wafer 100 to be inspected and an inspection apparatus having a circuit structure for generating an inspection signal. It is.
- the probe card 1 has a thin disk shape, and is a substrate 11 for electrical connection with an inspection apparatus.
- a reinforcing member 12 that is attached to one surface of the substrate 11 and reinforces the substrate 11, an interposer 13 that relays the wiring from the substrate 11, and a space transformer that relays the wiring that is relayed by the interposer 13 by changing the interval.
- 14 (relay substrate), a probe head 15 that is stacked on the space transformer 14 in a disk shape having a diameter S smaller than that of the substrate 11, and accommodates and holds a plurality of probes 2 corresponding to the wiring pattern to be inspected, Is provided.
- the probe card 1 is fixed to the substrate 11 and holds the interposer 13 and the space transformer 14 in a stacked state in a lump, and the end of the probe head 15 fixed to the holding member 16. And a leaf spring 17 for fixing.
- the substrate 11 is formed using an insulating material such as polyimide, belite, epoxy resin, etc., and a wiring layer (wiring pattern) for electrically connecting the plurality of probes 2 and the inspection device is a via hole or the like. It is formed in three dimensions.
- the reinforcing member 12 has a circular outer peripheral portion 121 having substantially the same diameter as the substrate 11 and a disk shape having the same center as the circle formed by the outer peripheral portion 121 and having a slightly larger surface area than the surface of the interposer 13.
- the center portion 122 formed and the outer peripheral direction force of the center portion 122 extend until reaching the outer periphery portion 121, and a plurality of connecting portions 123 (four in FIG. 1) connecting the outer periphery portion 121 and the center portion 122 are provided.
- the strong reinforcing member 12 is realized by a highly rigid material such as anodized aluminum, stainless steel, Invar, Kovar (registered trademark), or duralumin.
- the interposer 13 has a regular octagonal surface and has a thin plate shape.
- this interposer 13 for example, a thin-film base material having an insulating material force such as polyimide and a plurality of leaf spring type connection terminals arranged in a predetermined pattern on both surfaces of the base material and having a cantilever shape It is possible to apply one having In this case, the connection terminal provided on one surface of the interposer 13 contacts the electrode pad of the space transformer 14, and the connection terminal provided on the other surface contacts the electrode pad of the substrate 11. Therefore, electrical connection between the two will be attempted.
- the connection terminal may be constituted by a coil pin.
- a pressurized conductive rubber in which metal particles are arranged in the thickness direction inside the thin silicon rubber can also be applied.
- This Pressurized conductive rubber exhibits anisotropic conductivity when adjacent metal particles come into contact with each other inside silicon rubber when pressure is applied in the thickness direction.
- the interposer 13 may be configured using a pressure conductive rubber having such properties, so that the substrate 11 and the space transformer 14 may be electrically connected.
- the internal wiring layer is three-dimensionally formed by via holes or the like, similarly to the substrate 11.
- the surface of the space transformer 14 has a regular octagonal surface substantially congruent with the interposer 13 and has a thin plate shape.
- the powerful space transformer 14 uses an insulating material such as ceramic as a base material, and also functions to reduce the difference between the thermal expansion coefficient of the probe head 15 and the thermal expansion coefficient of the substrate 11.
- the probe head 15 has a disk shape, and accommodates and holds a plurality of probes 2 in the probe accommodating region 15p shown in FIG.
- the number and arrangement pattern of the probes 2 accommodated in the probe head 15 are determined according to the number of semiconductor chips formed on the semiconductor wafer 100 and the arrangement pattern of the electrode pads 101. For example, when a semiconductor wafer 100 having a diameter of 8 inches (about 200 mm) is to be inspected, several hundred to several thousand probes 2 are required. When a semiconductor wafer 100 having a diameter of 12 inches (about 300 mm) is to be inspected, several thousand to several tens of thousands of probes 2 are required.
- the probe head 15 is formed using an insulating material such as ceramics, and a hole for accommodating the probe 2 is formed in the thickness direction in accordance with the arrangement of the semiconductor wafers 100. .
- the holding member 16 is made of the same material as that of the reinforcing member 12, and has a regular octagonal prism-shaped hollow portion in which the interposer 13 and the space transformer 14 can be stacked and held.
- the holding member 16 presses and holds the interposer 13 and the space transformer 14 against the substrate 11 1, thereby applying a pressure necessary for electrically connecting the substrate 11 and the space transformer 14 via the interposer 13. I'm barking.
- the leaf spring 17 is formed of an elastic material such as phosphor bronze, stainless steel! ⁇ ), Beryllium copper, etc., and has a thin annular shape.
- a claw portion 171 as a pressing member for holding 15 is provided uniformly over the entire circumference.
- Powerful claw part 171 is a probe head 15 Press the edge near the edge of the surface evenly in the direction of the substrate 11 over the entire circumference. Therefore, a substantially uniform initial load is generated in the probe 2 accommodated in the probe head 15, and the probe head 15 is warped, wavy, uneven, etc. as in the case of holding a large number of probes 2 as described above. Even when deformation becomes a problem, such deformation can be suppressed.
- One end of the wiring 18 formed on the substrate 11 is arranged on the surface of the substrate 11 on the side where the reinforcing member 12 is mounted in order to connect to an inspection device (not shown).
- the other end of the wiring 18 is connected to the probe 2 accommodated and held by the probe head 15 via the electrode pad formed at the lower end of the space transformer 14. ing.
- FIG. 3 only a part of the wiring 18 is schematically shown for the sake of simplicity.
- Each male connector 19 is arranged radially with respect to the center of the substrate 11, and is paired with each of the female connectors 20 provided at the opposing positions on the connector seat 3 of the inspection apparatus, and the terminals of the male connectors 19 are in contact with each other. By doing so, the electrical connection between the probe 2 and the inspection device is established.
- Zero Insertion Force (ZIF: Zero Insertion) is a connector consisting of male connector 19 and female connector 20 that requires almost no external force when inserting and removing male connectors, and after connecting the connectors together, Force) type connectors can be applied. If this ZIF connector is used, the probe card 1 and the inspection device can receive almost no stress due to the connection even if the number of probes 2 is large. The durability of card 1 can also be improved.
- the male and female connectors may be reversed between the probe card and the inspection device. Further, the connector may be arranged other than radially. Furthermore, instead of realizing the connection between the probe card and the inspection device by a connector, a terminal such as a pogo pin having a spring action is provided in the inspection device, and the probe card and the inspection device are connected to each other via a cover terminal. It is good also. As shown in FIG. 3, the probe 2 is attached to the probe head 15 such that one tip protrudes in accordance with the electrode pad arrangement pattern of the semiconductor wafer 100 placed on the wafer chuck 4.
- each probe 2 comes into contact with the surface of the plurality of electrode pads 101 of the semiconductor wafer 100 at a predetermined pressure from a direction perpendicular to the surface.
- the probe 2 has a fine needle shape and is urged and urged to extend and contract in the longitudinal direction.
- any conventionally known probe can be applied.
- the positional relationship between the probe card 1 and the semiconductor wafer 100 will be described.
- the temperature difference between the minimum value (minimum temperature) and the maximum value (maximum temperature) during the inspection is large.
- the difference in the degree of expansion due to the difference in the coefficient of thermal expansion of each member constituting the probe card 1 becomes remarkable. For this reason, depending on the temperature at the time of inspection, it may happen that the tip of the probe 2 does not come into contact with an appropriate position of the semiconductor UE 100 or the space transformer 14.
- both ends of the probe 2 are connected to the electrode node of the semiconductor wafer 100.
- the space transformer 14 is configured to contact near the center of the electrode pad.
- the ambient temperature of the inspection system including the probe card 1 and the wafer chuck 4 may be changed or the temperature of the wafer chuck 4 may be changed depending on the content of the inspection. is there. Therefore, the temperature environment here means an environment according to the ambient temperature at the time of inspection and the temperature of Z or the wafer chuck 4. This point is common to all the embodiments of the present invention.
- FIGS 4A to 4C are diagrams schematically showing the positional relationship among the space transformer 14, the probe head 15, and the semiconductor wafer 100 constituting the probe card 1 in temperature environments having different temperatures.
- the thermal expansion coefficient of the space transformer 14 is C and the probe head 15 is the same as in the background technology section described above.
- the thermal expansion coefficient is C, and the thermal expansion coefficient of the semiconductor wafer 100 is C. 4A to 4C
- FIG. 4A shows space transformation in a temperature environment having a minimum temperature T at the time of inspection.
- FIG. 3 is a diagram schematically showing the positional relationship between the head 14, the probe head 15, and the semiconductor wafer 100.
- the upper end of the probe 2 is in contact with the vicinity of the outer edge of the electrode pad 141 provided in the space transformer 14. Further, the lower end of the probe 2 is in contact with the vicinity of the inner edge portion of the electrode pad 101 provided on the semiconductor wafer 100 at the time of inspection.
- Figure 4B shows the minimum temperature T and the maximum temperature at the time of inspection by increasing the temperature from the minimum temperature T.
- FIG. 2 is a diagram schematically showing the positional relationship between a format 14, a probe head 15, and a semiconductor wafer 100.
- FIG. Under this average temperature environment, the upper end of the probe 2 is in contact with the vicinity of the central portion of the electrode pad 141 of the space transformer 14, while the lower end of the probe 2 is in contact with the vicinity of the central portion of the electrode pad 101 of the semiconductor wafer 100.
- the broken line in Fig. 4B shows the positional relationship (Fig. 4A) under the minimum temperature environment.
- Figure 4C has the highest temperature T at the time of inspection by further raising the temperature from the average temperature T
- FIG. 6 is a diagram schematically showing the positional relationship between the space transformer 14, the probe head 15, and the semiconductor wafer 100 under a mean high temperature environment.
- the upper end of the probe 2 is in contact with the electrode pad 141 of the space transformer 14 and the vicinity of the inner edge of the electrode pad 141. Further, the lower end of the probe 2 is in contact with the vicinity of the outer edge portion of the electrode pad 101 of the semiconductor wafer 100 at the time of inspection.
- the broken line shown in Fig. 4C shows the positional relationship (Fig. 4B) under the average temperature environment.
- the positions where the tip of the probe 2 contacts the electrode pad 101 and the electrode pad 141 are different because there are differences in the three thermal expansion coefficients C 1, C 2, and C 3. That is,
- the space transformer 14 having the maximum thermal expansion coefficient is most likely to expand as the temperature rises, and therefore, the ratio of spreading in the horizontal direction is the largest in FIGS. 4B and 4C.
- the semiconductor with the smallest coefficient of thermal expansion among the three members Wafer 100 has the smallest spread ratio in the horizontal direction in FIGS. 4B and 4C. Therefore, in the minimum temperature environment shown in FIG. 4A, the tip position of the probe 2 and the center part of the electrode pads 101 and 141 are out of contact with each other, whereas in the average temperature environment shown in FIG. The tip of 2 comes into contact with the center of electrode pads 101 and 141. Note that the vertical thickness of these three members is significantly smaller than the horizontal width of each member, so thermal expansion in the vertical direction can be ignored.
- the probe and the electrode pad are aligned under a normal temperature environment (which may coincide with the minimum temperature environment).
- the amount of displacement between the probe and the electrode pad increases under high temperature conditions. In some cases, the contact was lost (see Figure 18).
- alignment is performed so that the tip of the probe 2 is in contact with the center of the electrode pads 101 and 141 under an average temperature environment.
- the amount of displacement of the contact position in the temperature range can be reduced to about 1Z2.
- the electrode pad 101 of the semiconductor wafer 100 or the electrode pad 141 of the space transformer 14 and the tip of the probe 2 can be reliably contacted regardless of the temperature environment.
- Figure 5 shows the relationship C ⁇ C ⁇ C between the three coefficients of thermal expansion C, C, and C.
- FIG. 5 shows the mutual positional relationship in the average temperature environment in case there is a relationship. Also in the case shown in the figure, the tip of the probe 2 is in contact with the vicinity of the center part of the electrode pads 101 and 141 in an average temperature environment.
- the mutual positional relationship in the lowest temperature environment is indicated by a broken line
- the mutual positional relationship in the highest temperature environment is indicated by a one-dot chain line.
- the degree of thermal expansion of the space transformer 14-2 where the degree of thermal expansion of the semiconductor wafer 100 is the largest is the smallest. Therefore, the contact position of the probe 2 accommodated and held in the probe head 15-2 at the time of inspection with respect to the electrode pad 101 changes from the outer edge side to the inner edge side as the temperature rises. On the other hand, the contact position of the probe 2 with the electrode pad 141 changes from the inner edge side to the outer edge side of the electrode pad 141 as the temperature rises.
- the thermal expansion coefficient C of a semiconductor wafer 100 containing silicon as a main component is 3.4 (ppmZ)
- the space transformer 14 and the probe head 15 can be used only in the first embodiment because the positional relationship in the average value of the temperatures used in the inspection is used as a reference. Can select the optimal material regardless of the thermal expansion coefficient. Therefore, the degree of freedom in material selection when manufacturing the probe card 1 is significantly increased.
- a plurality of probes that are made of a conductive material and that input or output an electrical signal in contact with an electrode pad of a semiconductor wafer;
- a probe head that accommodates and holds the plurality of probes, a substrate having a wiring pattern corresponding to a circuit structure, and a relay layer that is stacked on the probe head and relays at different intervals between the wiring patterns of the substrate.
- Corresponding to the probe head, and a space transformer having an electrode pad provided on the surface facing the probe head, and both ends of the probe are averages of the minimum temperature and the maximum temperature when the semiconductor wafer is inspected. In an environment having a temperature, the semiconductor wafer and the space transformer respectively have the electric power. With the structure in contact with the proximal with the central portion of the pad, it is possible to reliably contact with the contact Target probe regardless of a temperature environment during a test.
- the probe head, the space transformer, and the semiconductor in a temperature environment having an intermediate temperature range at the time of inspection, that is, an average temperature of the lowest temperature and the highest temperature at the time of inspection. Since the alignment is based on the mutual positional relationship of the wafers, the probe may not come into contact with the electrode pads of the semiconductor transformer in the temperature range assumed at the time of inspection. Absent. Therefore, the degree of freedom in selecting materials for the probe head and space transformer increases. As a result
- the probe has a minute size of 0.2 mm or less. It can also be easily brought into contact with the electrode pad.
- the probe card according to the second embodiment of the present invention includes a pair of positioning pins for positioning the probe head and the space transformer, and one of the positioning holes through which the pair of positioning pins passes is provided in the longitudinal direction.
- the length of is larger than the diameter of the positioning pin.
- the electrode pads and probes that the space transformer or semiconductor wafer has are aligned in the same manner as in the first embodiment. That is, the alignment is performed based on the positional relationship among the space transformer, the probe head, and the semiconductor wafer in a temperature environment having an average temperature of the lowest temperature and the highest temperature at the time of inspection.
- FIG. 6 is a diagram showing a configuration of the probe head and the space transformer of the probe card according to the second embodiment.
- FIG. 7 is a diagram schematically showing a cross section taken along line BB in FIG. In the following description, the thermal expansion coefficient C of the space transformer and the probe
- Figure 7 shows the positional relationship between the space transformer and the probe head in the lowest temperature environment during inspection. Note that in FIG. 7, the description about the internal wiring including the probe is omitted. The same is true for similar sections referenced below.
- the probe card 21 shown in FIGS. 6 and 7 includes a space transformer 22, a probe head 23, and two positioning pins 24a fixed so as to extend in a direction perpendicular to the surface of the space transformer 22. And 24b.
- the positioning pins 24a and 24b are fixed near both ends of a diagonal line passing through the center of the surface of the space transformer 22.
- a pair of positioning holes 231 and 232 forces for positioning the probe head 23 with respect to the space transformer 22 through the same positioning pins 24a and 24b, respectively, are passed through the probe head 23 through the center of the surface of the probe head 23. It is formed near both ends on the diagonal line.
- the positioning hole 231 has substantially the same diameter as the positioning pin 24a and the like, and the position with respect to the probe head 23 is substantially fixed. Position against this The length of the outer circumference of the circle formed on the surface of the probe head 23 is larger than the diameter of the positioning pin 24a and the like. Therefore, the positioning pin 24b inserted through the positioning hole 232 has a degree of freedom to move along the outer circumferential direction of the circle with respect to the probe head 23.
- the configuration of the probe card 21 other than the above is the same as that of the probe card 1 described above.
- FIG. 8 is a diagram showing the positional relationship between the space transformer 22 and the probe head 23 when the probe card 21 is in an average temperature environment
- FIG. 9 is a diagram schematically showing a cross section taken along the line CC in FIG. It is.
- the broken lines in FIG. 8 indicate the positional relationship between the space transformer 22 and the probe head 23 in the state of FIG. 6, that is, in the lowest temperature environment at the time of inspection. 8 and 9, the probe head 23 has a higher degree of thermal expansion, so the positioning pin 24b is positioned near the center of the positioning hole 232.
- FIG. 10 is a diagram showing the positional relationship between the space transformer 22 and the probe head 23 in the environment where the probe card 21 is at the highest temperature at the time of inspection.
- Fig. 11 is a schematic cross-sectional view taken along the line DD in Fig. 10.
- FIG. The broken line in FIG. 10 indicates the positional relationship between the space transformer 22 and the probe head 23 in the state of FIG. 6, that is, in the lowest temperature environment at the time of inspection.
- the positioning pin 24b is positioned near the inner edge of the positioning hole 232.
- the positioning hole 232 having a long hole shape is provided in the probe head 23, whereby the positional relationship between the space transformer 22 and the probe head 23 is changed depending on the temperature, and the thermal expansion coefficient C of the space transformer 22 is changed. And the thermal expansion coefficient s of the probe head 23
- the pin 24a Like the case of the pin 24a, it is damaged by cracks or the like where the positioning pin of the probe head that has expanded due to temperature rise is inserted, such as when passing through a positioning hole of approximately the same diameter. None will happen.
- FIG. 2 is a diagram showing the positional relationship between the space transformer and the probe head in the minimum temperature environment during inspection in this case.
- the space transformer 25 And the probe head 26 are positioned by two positioning pins 27a and 27b.
- the positioning pin 27b passes through a positioning hole 261 having a long hole shape whose longitudinal direction is parallel to the radial direction of the surface of the probe head 26.
- the positioning pin 27b is located on the inner edge side of the positioning hole 261, and the penetration position changes toward the outer edge side of the positioning hole 261 as the temperature rises.
- a plurality of probes that are made of a conductive material and that input or output an electrical signal in contact with an electrode pad of a semiconductor wafer;
- a probe head that accommodates and holds the plurality of probes, a substrate having a wiring pattern corresponding to a circuit structure, and a relay layer that is stacked on the probe head and relays at different intervals between the wiring patterns of the substrate.
- Corresponding to the probe head, and a space transformer having an electrode pad provided on the surface facing the probe head, and both ends of the probe are averages of the minimum temperature and the maximum temperature when the semiconductor wafer is inspected. In an environment having a temperature, the semiconductor wafer and the space transformer respectively have the electric power.
- a pair of positioning pins that are fixed to the space transformer and that positions the space transformer and the probe head are further provided, and the pair of positioning pins is provided. Even if there is a difference between the thermal expansion coefficient of the probe head and the space transformer, by making the length of at least one of the positioning holes to be inserted in the outer circumferential direction larger than the diameter of the positioning pin, The probe head and space transformer are not damaged during inspection of semiconductor wafers at high temperatures.
- the probe card according to the third embodiment of the present invention includes positioning pins for positioning the probe head and the space transformer as in the second embodiment.
- a plurality of positioning pins are inserted at positions symmetrical with respect to the center of the surface of the probe head having a symmetrical shape with respect to the center, and the positions at which the positioning pins are inserted are inserted.
- the length of the fixed hole in the radial direction of the probe head surface is a long hole shape larger than the diameter of the positioning pin.
- the electrode pads and probes that the space transformer or the semiconductor wafer has are aligned in the same manner as in the first embodiment. That is, the alignment is performed based on the positional relationship among the space transformer, the probe head, and the semiconductor wafer in a temperature environment having an average temperature of the lowest temperature and the highest temperature at the time of inspection.
- FIG. 13 is a diagram showing the configuration of the probe head and the space transformer of the probe card according to the third embodiment.
- FIG. 14 is a diagram schematically showing a cross section taken along line EE of FIG. In the following description, the thermal expansion coefficient C of the space transformer and the
- Figure 14 shows the positional relationship between the space transformer and the probe head in the minimum temperature environment during inspection.
- the probe card 31 shown in FIGS. 13 and 14 includes a space transformer 32, a probe head 33, and four positioning pins 34a, which are fixed so as to extend in a direction perpendicular to the surface of the space transformer 32. 34b, 34c, and 34d.
- the positioning pins 34 a to 34 d are fixed at positions symmetrical with respect to the center of the surface of the space transformer 32.
- Positioning holes 331 to 334 for positioning the probe head 33 relative to the space transformer 32 through the positioning pins 34a to 34d are formed in the probe head 33 at positions symmetrical to the center of the circle on the surface of the probe head 33. It has been.
- the positioning holes 331 to 334 have a radial length that spreads radially from the center of the circle formed on the surface of the probe head 33, and is larger than the diameter of the positioning pins 34a and the like. Therefore, the positioning pins 34a to 34d passed through the positioning holes 331 to 334 have a degree of freedom to move along the radial direction of the circle with respect to the probe head 33. In other words, in Embodiment 3, as the temperature rises, the probe head 33 expands radially from the center of the surface circle! /
- the remaining configuration of the probe card 31 is the same as that of the probe card 1 described above. is there.
- FIG. 15 is a diagram showing the positional relationship between the space transformer 32 and the probe head 33 when the probe card 31 is in an average temperature environment at the time of inspection.
- the broken line in FIG. 15 indicates the positional relationship between the space transformer 32 and the probe head 33 in the state of FIG. 13, that is, in the lowest temperature environment at the time of inspection.
- the positioning pins 34a to 34d are located near the center of the positioning holes 331 to 334 in the average temperature environment.
- FIG. 16 is a diagram showing a positional relationship between the space transformer 32 and the probe head 33 when the probe card 31 is in a maximum temperature environment at the time of inspection.
- the broken line in FIG. 16 also shows the positional relationship between the space transformer 32 and the probe head 33 in the state of FIG. 13, that is, in the lowest temperature environment at the time of inspection.
- the positioning pins 34a to 34d are located near the inner edge portions of the positioning holes 331 to 334.
- the positioning relationship between the space transformer 32 and the probe head 33 is achieved by providing the probe head 33 with the positioning holes 331 to 334 having a long hole shape whose longitudinal direction is the radial direction of the surface.
- the difference between the thermal expansion coefficient C of the space transformer 32 and the thermal expansion coefficient C of the probe head 33 can be relaxed and absorbed.
- the probe head that has expanded due to the temperature rise is prevented from being damaged by a crack or the like at the insertion position of the positioning pin.
- Positioning may be performed so that the positioning pin in the minimum temperature environment is positioned at the inner edge of the positioning hole as in the positioning hole 261 in FIG.
- a plurality of probes that are made of a conductive material and that input or output an electrical signal in contact with an electrode pad of a semiconductor wafer;
- a probe head that accommodates and holds the plurality of probes, a substrate having a wiring pattern corresponding to a circuit structure, and a relay layer that is stacked on the probe head and relays at different intervals between the wiring patterns of the substrate.
- Corresponding to the space having electrode pads provided on the surface facing the probe head A transformer, and both ends of the probe are arranged in the center of the electrode pads respectively included in the semiconductor wafer and the space transformer in an environment having an average temperature of the lowest temperature and the highest temperature when the semiconductor wafer is inspected.
- the positioning transformer is further provided with a plurality of positioning pins that are fixed to the space transformer and that positions the space transformer and the probe head.
- the probe head has a long hole shape in which the direction in which all the positioning holes radially expand with respect to the center of the probe head surface is the longitudinal direction. Because it expands radially relative to the center of the surface, there is little risk of overloading certain parts of the probe head.
- the number of positioning pins and positioning holes is four has been described.
- the number of positioning pins and positioning holes is not limited to this, and is three or five or more. Moyo.
- the probe card according to the present invention may include a probe head having a polygonal surface shape as a shape other than the disk shape, and the shape of the probe card can be changed depending on the shape of the inspection object or the arrangement pattern of the electrode nodes. .
- Each surface shape of the interposer and the space transformer may be a circle similar to the probe head.
- the probe card for FWLT is the most asymmetric, it is optimal when the flatness and parallelism of the probe card are given top priority. It is.
- each surface of the interposer or space transformer may be an appropriate regular polygon, and the probe head may be a regular polygon similar to the regular polygon.
- the shape of the holding member changes as the shape of the interposer or space transformer changes.
- the probe head may be circular.
- the probe card according to the present invention may include a substrate or a probe head having a shape other than the disk, and the shape of the probe card can be changed depending on the shape of the inspection object and the arrangement pattern of the electrode pads provided on the inspection object. It is.
- the probe card according to the present invention is useful for inspection of electrical characteristics of a semiconductor wafer, and is particularly suitable for performing FWLT.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Measuring Leads Or Probes (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06835051A EP1970715A4 (en) | 2005-12-28 | 2006-12-20 | PROBE CARD |
| US12/087,244 US7795892B2 (en) | 2005-12-28 | 2006-12-20 | Probe card |
| CN2006800492122A CN101346633B (zh) | 2005-12-28 | 2006-12-20 | 探针卡 |
| TW095149161A TWI355704B (en) | 2005-12-28 | 2006-12-27 | Probe card |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-380380 | 2005-12-28 | ||
| JP2005380380A JP4842640B2 (ja) | 2005-12-28 | 2005-12-28 | プローブカードおよび検査方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007077743A1 true WO2007077743A1 (ja) | 2007-07-12 |
Family
ID=38228099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/325431 Ceased WO2007077743A1 (ja) | 2005-12-28 | 2006-12-20 | プローブカード |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7795892B2 (ja) |
| EP (1) | EP1970715A4 (ja) |
| JP (1) | JP4842640B2 (ja) |
| KR (1) | KR101010948B1 (ja) |
| CN (1) | CN101346633B (ja) |
| MY (1) | MY146841A (ja) |
| TW (1) | TWI355704B (ja) |
| WO (1) | WO2007077743A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019021749A1 (ja) * | 2017-07-24 | 2019-01-31 | 株式会社ヨコオ | 検査治具 |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1959260B1 (en) * | 2005-12-05 | 2019-05-29 | NHK Spring Company Limited | Probe card |
| WO2008126601A1 (ja) * | 2007-03-14 | 2008-10-23 | Nhk Spring Co., Ltd. | プローブカード |
| JP5326240B2 (ja) * | 2007-08-24 | 2013-10-30 | 富士通株式会社 | プローブボードおよび電子デバイスの検査方法 |
| JP5188161B2 (ja) * | 2007-11-30 | 2013-04-24 | 東京エレクトロン株式会社 | プローブカード |
| JP2009133722A (ja) | 2007-11-30 | 2009-06-18 | Tokyo Electron Ltd | プローブ装置 |
| JP5288248B2 (ja) * | 2008-06-04 | 2013-09-11 | 軍生 木本 | 電気信号接続装置 |
| US8622752B2 (en) | 2011-04-13 | 2014-01-07 | Teradyne, Inc. | Probe-card interposer constructed using hexagonal modules |
| US8957691B2 (en) * | 2011-10-21 | 2015-02-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Probe cards for probing integrated circuits |
| DE102012016449A1 (de) * | 2012-08-16 | 2014-03-13 | Feinmetall Gmbh | Prüfkopf für die elektrische Prüfung eines Prüflings |
| DE102013008324A1 (de) * | 2013-05-08 | 2014-11-13 | Feinmetall Gmbh | Elektrische Kontaktiervorrichtung |
| JP6259590B2 (ja) * | 2013-06-12 | 2018-01-10 | 株式会社日本マイクロニクス | プローブカード及びその製造方法 |
| JP6628994B2 (ja) * | 2015-07-03 | 2020-01-15 | 三菱重工業株式会社 | 構造体 |
| JP6553472B2 (ja) * | 2015-09-30 | 2019-07-31 | 株式会社ヨコオ | コンタクタ |
| JP6615680B2 (ja) * | 2016-04-08 | 2019-12-04 | 株式会社日本マイクロニクス | プローブカード |
| JP6872943B2 (ja) * | 2017-03-24 | 2021-05-19 | 株式会社日本マイクロニクス | 電気的接続装置 |
| USD843356S1 (en) * | 2017-04-12 | 2019-03-19 | Kymeta Corporation | Antenna |
| JP7101457B2 (ja) | 2017-04-13 | 2022-07-15 | 株式会社日本マイクロニクス | 電気的接続装置 |
| JP7075725B2 (ja) | 2017-05-30 | 2022-05-26 | 株式会社日本マイクロニクス | 電気的接続装置 |
| KR102367037B1 (ko) * | 2017-06-21 | 2022-02-24 | 도쿄엘렉트론가부시키가이샤 | 검사 시스템 |
| CN110531125B (zh) * | 2018-05-23 | 2022-05-17 | 旺矽科技股份有限公司 | 空间转换器、探针卡及其制造方法 |
| JP7129261B2 (ja) * | 2018-07-27 | 2022-09-01 | キオクシア株式会社 | 試験装置 |
| TWI689731B (zh) * | 2019-03-18 | 2020-04-01 | 中華精測科技股份有限公司 | 探針卡測試裝置及其訊號轉接模組 |
| JP7198127B2 (ja) * | 2019-03-20 | 2022-12-28 | 株式会社アドバンテスト | インタポーザ、ソケット、ソケット組立体、及び、配線板組立体 |
| JP7471778B2 (ja) * | 2019-03-29 | 2024-04-22 | 株式会社日本マイクロニクス | プローブカード |
| TWI750552B (zh) * | 2019-12-16 | 2021-12-21 | 旺矽科技股份有限公司 | 可定位之探針卡及其製作方法 |
| CN113430495B (zh) * | 2021-06-11 | 2022-12-09 | 北京北方华创微电子装备有限公司 | 一种半导体工艺设备 |
| JP2025117042A (ja) * | 2024-01-30 | 2025-08-12 | 株式会社日本マイクロニクス | プローブおよび電気的接続装置 |
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- 2005-12-28 JP JP2005380380A patent/JP4842640B2/ja not_active Expired - Lifetime
-
2006
- 2006-12-20 MY MYPI20082372A patent/MY146841A/en unknown
- 2006-12-20 EP EP06835051A patent/EP1970715A4/en not_active Withdrawn
- 2006-12-20 KR KR1020087015549A patent/KR101010948B1/ko not_active Expired - Fee Related
- 2006-12-20 CN CN2006800492122A patent/CN101346633B/zh not_active Expired - Fee Related
- 2006-12-20 WO PCT/JP2006/325431 patent/WO2007077743A1/ja not_active Ceased
- 2006-12-20 US US12/087,244 patent/US7795892B2/en active Active
- 2006-12-27 TW TW095149161A patent/TWI355704B/zh not_active IP Right Cessation
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019021749A1 (ja) * | 2017-07-24 | 2019-01-31 | 株式会社ヨコオ | 検査治具 |
| JPWO2019021749A1 (ja) * | 2017-07-24 | 2020-05-28 | 株式会社ヨコオ | 検査治具 |
| JP7240317B2 (ja) | 2017-07-24 | 2023-03-15 | 株式会社ヨコオ | 検査治具 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4842640B2 (ja) | 2011-12-21 |
| US20090167335A1 (en) | 2009-07-02 |
| JP2007178405A (ja) | 2007-07-12 |
| EP1970715A1 (en) | 2008-09-17 |
| CN101346633A (zh) | 2009-01-14 |
| EP1970715A4 (en) | 2012-10-03 |
| MY146841A (en) | 2012-09-28 |
| US7795892B2 (en) | 2010-09-14 |
| TW200735247A (en) | 2007-09-16 |
| TWI355704B (en) | 2012-01-01 |
| KR20080079289A (ko) | 2008-08-29 |
| KR101010948B1 (ko) | 2011-01-25 |
| CN101346633B (zh) | 2011-05-25 |
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