WO2005096368A1 - プローブ装置およびこのプローブ装置を具えたウエハ検査装置並びにウエハ検査方法 - Google Patents
プローブ装置およびこのプローブ装置を具えたウエハ検査装置並びにウエハ検査方法 Download PDFInfo
- Publication number
- WO2005096368A1 WO2005096368A1 PCT/JP2005/006108 JP2005006108W WO2005096368A1 WO 2005096368 A1 WO2005096368 A1 WO 2005096368A1 JP 2005006108 W JP2005006108 W JP 2005006108W WO 2005096368 A1 WO2005096368 A1 WO 2005096368A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- inspection
- wafer
- anisotropic conductive
- connection
- Prior art date
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- G01R1/07371—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 card or back card with apertures through which the probes pass
-
- 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
Definitions
- Probe device wafer inspection device equipped with the probe device, and wafer inspection method
- the present invention relates to a wafer inspection device, a wafer inspection method implemented in the wafer inspection device, and a probe device that can be suitably used in the wafer inspection device, and more particularly, to a probe device formed on a wafer.
- a wafer inspection apparatus and method for performing a probe test on a part or all of a large number of integrated circuits at a time, or a burn-in test on a part or all of a large number of integrated circuits formed on a wafer at a time The present invention relates to a wafer inspection apparatus and a wafer inspection method for performing the same, and a probe apparatus that can be suitably used for these wafer inspection apparatuses.
- a probe test is performed on each of these integrated circuits.
- a semiconductor chip is formed by cutting the wafer, the semiconductor chip is housed and sealed in an appropriate knockout, and further burn-in is performed for each of the knocked-out semiconductor integrated circuit devices.
- a test is performed. Therefore, in order to assure the quality of the semiconductor integrated circuit device, not only the electrical characteristics of the semiconductor integrated circuit device but also the electrical characteristics of the semiconductor chip itself must be inspected by the burn-in test. It is extremely important to do.
- a mounting method has been developed in which a semiconductor chip itself is used as an integrated circuit device, and a circuit device including the semiconductor chip is directly mounted on a printed circuit board, for example. Has been requested.
- a probe test is generally performed on, for example, 16 or 32 integrated circuits of a large number of integrated circuits formed on the wafer at a time. Then, a method of sequentially performing a probe test on other integrated circuits is adopted.
- FIG. 17 is an explanatory cross-sectional view schematically showing a configuration of an example of a conventional wafer inspection apparatus for performing a WLBI test or a probe test on a wafer on which a large number of integrated circuits are formed.
- a wafer inspection apparatus is described in, for example, Patent Documents 1 and 2.
- This wafer inspection apparatus has an inspection circuit board 80 on which a number of inspection electrodes 81 are formed on a front surface (a lower surface in the figure).
- a probe 85 is provided on a surface of the inspection circuit board 80 through a connector 85.
- Card 90 is arranged.
- the probe card 90 is connected to a connection circuit board 91 and an electrode (not shown) of an integrated circuit on a wafer W to be tested, which is provided on the surface (the lower surface in the figure) of the connection circuit board 91.
- a contact member 95 having a number of contacts (not shown) to be contacted. Below the contact member 95, there is disposed a ueno, tray 96, on which the ueno, W to be inspected, is placed, which also serves as a heating plate.
- the contact member 95 for example, a contact member made of an anisotropic conductive sheet in which a plurality of connecting conductive portions each extending in the thickness direction are insulated from each other by an insulating portion, or an insulating sheet.
- a sheet-like connector in which a contact made of a metal body extending through in the thickness direction is arranged, a sheet-like connector in which an anisotropic conductive sheet and one sheet-like connector are laminated, and the like can be used.
- connection circuit board 91 of the probe card 90 On the back surface of the connection circuit board 91 of the probe card 90, a number of terminal electrodes 92 are formed in accordance with a pattern corresponding to the pattern of the test electrodes 81 of the test circuit board 80.
- the connection circuit board 91 is arranged so that each of the terminal electrodes 92 faces the inspection electrode 81 of the inspection circuit board 80 by the guide pin 93.
- connection pins 86 which are called “pogo pins” and can be compressed in the longitudinal direction, are arranged according to the pattern corresponding to the pattern of the test electrodes 81 on the test circuit board 80. ing.
- the connector 85 is arranged in a state where each of the connection pins 86 is positioned between the inspection electrode 81 of the force detection circuit board 80 and the terminal electrode 92 of the connection circuit board 91.
- a wafer W to be inspected is placed on a wafer tray 96, and the wafer W is moved upward by an appropriate driving means (not shown) to move the wafer W.
- each of the connection pins 86 of the connector 85 is compressed in a lengthwise manner, and thereby the test electrode of the test circuit board 80 is pressed.
- Each of the contact electrodes 95 is electrically connected to each of the terminal electrodes 92 of the connection circuit board 91, and each of the electrodes to be inspected of a part of the integrated circuit formed on the Ueno and W is connected to the contact member 95.
- Each of the contacts makes contact, thereby achieving the required electrical connection.
- the wafer W is heated to a predetermined temperature by the wafer tray 96, and in this state, a required electrical inspection (WLBI test or probe test) on the wafer W is performed.
- Patent Document 1 JP-A-2000-147063
- Patent Document 2 Japanese Patent Application Laid-Open No. 2000-323535
- the wafer inspection apparatus as shown in FIG. 17 has the following problems. That is, in the wafer inspection apparatus having such a configuration, in practice, each component constituting the wafer inspection apparatus itself has a warp or undulation, and the wafer tray 96 has an inclination. It has a relatively large degree of inclination (undulation).
- the planar accuracy of the wafer mounting surface in the wafer tray 96 (the degree of variation in the height level within the plane) is about ⁇ 20 / zm, and the wafer W and the inspection circuit board 80 And the board material itself that constitutes the connection circuit board 91
- the degree of warpage and undulation is about ⁇ 10 / zm.
- the thickness variation of the anisotropic conductive sheet itself is about ⁇ 10 m when the thickness is 200 m, and the contact member 95
- a laminate of an anisotropically conductive sheet and a sheet-like connector is used as the above, there is a variation in the thickness of the sheet-like connector itself in addition to the variation in the thickness of the anisotropically conductive sheet itself. Is about ⁇ 5 m with a thickness of 80 ⁇ m.
- connection pins 86 need to have a considerably large length, so that the distance of the signal transmission system is considerably long, so that high-speed processing is required.
- the electrical test of a high-performance integrated circuit there is a problem that it is difficult to cope with the electrical test of a high-performance integrated circuit.
- the present invention has been made in view of the above circumstances, and a purpose of the present invention is to collectively carry out electrical tests on a large number of electrodes to be tested in a large number of integrated circuits formed on a wafer. And a wafer inspection apparatus capable of reliably achieving a good electrical connection state for all the electrodes to be inspected, and performing an electrical inspection of a high-performance integrated circuit.
- An object of the present invention is to provide a wafer inspection method and a probe device that can be suitably used for the wafer inspection device.
- the probe device of the present invention is used for performing electrical inspection of a large number of integrated circuits formed on a wafer, and includes a testing circuit substrate having a large number of testing electrodes on a front surface, and a back surface.
- the pressure of the test electrode is reduced by the test circuit board and the connection circuit board disposed between the probe card and the test circuit board and the connection circuit board of the probe card.
- an anisotropic conductive connector for electrically connecting each of the terminal electrodes and each of the terminal electrodes, and a parallelism for adjusting the parallelism of the inspection circuit board to the wafer and the parallelism of the connection circuit board to the wafer.
- the parallelism adjustment mechanism is characterized in that it has a position variable mechanism that relatively displaces the inspection circuit board or the connection circuit board in the thickness direction of the anisotropic conductive connector.
- the parallelism adjusting mechanism has a plurality of position variable mechanisms, and each position variable mechanism independently sets the displacement amount of the inspection circuit board or the connection circuit board. It is preferable that it is configured as possible.
- a spacer is provided between the circuit board for inspection and the circuit board for connection in the probe card, the spacer regulating a distortion amount of the anisotropic conductive connector. It is preferable that it is set as the structure. In this case, the total thickness of the spacer is preferably at least 50% of the total thickness of the anisotropic conductive connector.
- the anisotropic conductive connector extends in the thickness direction corresponding to the electrode regions where the connection target electrodes of the connection circuit board and the inspection circuit board are formed.
- a frame plate having a plurality of anisotropic conductive film disposing holes formed therein; and a frame plate disposed in each of the anisotropic conductive film disposing holes of the frame plate and supported by a peripheral portion of the anisotropic conductive film disposing hole. Consisting of a plurality of elastic anisotropic conductive films,
- Spacers are provided on both sides of the frame plate of the anisotropically conductive connector, and the spacers are provided in regions corresponding to the regions of the anisotropically conductive connector where the elastic anisotropically conductive film is formed. It can be constituted by a frame-like member having an opening, and having a minute projection made of an elastic member at least on a contact surface with the circuit board for inspection and a contact surface with the circuit board for connection.
- the contact member constituting the probe card includes an anisotropic conductive sheet in which a plurality of connecting conductive portions extending in the thickness direction are insulated from each other by the insulating portion. It is preferable to be constituted by the above.
- an anisotropic conductive sheet in which a plurality of connecting conductive portions extending in the thickness direction are insulated from each other by an insulating portion, or an anisotropic conductive sheet supported by a frame plate.
- a wafer inspection apparatus of the present invention is for performing electrical inspection of a large number of integrated circuits formed on a wafer, and includes the above-described probe device.
- the wafer inspection method of the present invention provides a circuit board for inspection, an anisotropic conductive connector, and a circuit board for inspection or a connection circuit board, which are relatively displaced by a position variable mechanism constituting a parallelism adjusting mechanism.
- the three connection circuit boards are temporarily fixed in a state in which the anisotropic conductive connector is narrowed by the test circuit board and the connection circuit board, and this is used to fix each of the test electrodes on the test circuit board.
- Each of the terminal electrodes on the connection circuit board is electrically connected to each of the terminal electrodes via the connection conductive portion of the anisotropically conductive connector, and the state force is further increased so that the contact member of the probe card is attached to the wafer to be inspected.
- the parallelism of the test circuit board to the wafer and the parallelism of the connection circuit board to the wafer were measured, and based on the obtained results,
- the parallelism of the inspection circuit board to the wafer is adjusted.
- the parallelism of the connection circuit board to the wafer is adjusted, and the displacement of the test circuit board or the connection circuit board in the direction in which the separation distance between the test circuit board and the connection circuit board is increased.
- an electrical inspection is performed by bringing the entire probe apparatus into contact with the wafer.
- the parallelism adjusting mechanism includes a plurality of position variable mechanisms.
- the contact member of the probe card is in contact with the wafer to be inspected, the electrical resistance of each conductive part of the anisotropic conductive connector is measured, and the distribution of the obtained electrical resistance is measured.
- the correction amount of the displacement amount by each position variable mechanism can be set so that the state becomes uniform.
- the electrical resistance value of each of the connection conductive portions in the anisotropic conductive connector is 0.1 ⁇ or less, and the connection in the anisotropic conductive connector is not performed. It is preferable that the load per conductive part is set to be 0.01 to 0.4N.
- the inspection circuit board, the anisotropic conductive connector, and the probe card reduce the pressure of the anisotropic conductive connector by the inspection circuit board and the connection circuit board.
- the inspection initial state which is fixed, is set in this state, the inclination of the entire wafer inspection apparatus is adjusted by the parallelism adjustment mechanism, and the inspection initial state is changed to the inspection circuit board, the probe card, and the like.
- the inspection circuit board or the connection circuit board in the direction in which the separation distance between the inspection circuit board and the connection circuit board increases.
- the displacement of the contact is prohibited by the position variable mechanism, and high parallelism to the wafer is maintained throughout the probe device.
- the results and the respective electrodes to be inspected was made form are electrically connected, it can be stably obtained with a small load the necessary electrical connection state.
- the contact member of the probe card is constituted by a member provided with an anisotropic conductive sheet in which a plurality of connecting conductive portions each extending in the thickness direction are mutually insulated by the insulating portion.
- the unevenness can be absorbed by the anisotropically conductive connector, and the unevenness can be absorbed by the contact member by applying pressure while maintaining high parallelism to the wafer throughout the probe device. Since the loss can be obtained in a state in which the loss is reduced as much as possible, a good electrical connection state can be more stably obtained with a small load.
- the wafer inspection apparatus of the present invention since the above-described probe device is provided, a good electrical connection is provided between each of the electrodes to be inspected formed on the wafer and each of the contacts of the contact member.
- the electrical connection state can be stably obtained with a small load, and therefore, the intended electrical inspection can be reliably performed with high reliability.
- FIG. 1 is a plan view schematically showing a configuration of a main part of an example of a wafer inspection apparatus according to the present invention, together with a wafer to be inspected.
- FIG. 2 is an explanatory sectional view showing an enlarged view of the wafer inspection apparatus shown in FIG. 1.
- FIG. 3 is an explanatory cross-sectional view showing a state where a frame plate is arranged via an spacer between an upper mold and a lower mold for a mold for forming an elastic anisotropic conductive film.
- FIG. 4 is an explanatory sectional view showing a state in which a molding material layer of a desired form is formed between an upper mold and a lower mold of a mold.
- FIG. 5 is an explanatory sectional view showing a state in which the inspection circuit board and the connection circuit board in the wafer inspection apparatus shown in FIGS. 1 and 2 are electrically connected.
- FIG. 6 is an explanatory cross-sectional view showing a state in which each of contacts on a connection circuit board of a wafer inspection apparatus is electrically connected to each of electrodes to be inspected of a part of an integrated circuit formed on a wafer. is there.
- FIG. 7 is a graph schematically showing a characteristic curve of an anisotropic conductive connector constituting a contact member.
- FIG. 8 is an explanatory cross-sectional view showing an enlarged main part of another configuration example of the wafer inspection apparatus according to the present invention.
- FIG. 9 is an explanatory sectional view showing a state in which the inspection circuit board and the connection circuit board in the wafer inspection apparatus shown in FIG. 8 are electrically connected.
- FIG. 10 is an explanatory cross-sectional view showing a state in which each of contacts on a connection circuit board of a wafer inspection apparatus is electrically connected to each of electrodes to be inspected of a part of an integrated circuit formed on a wafer. It is. [11] FIG. 11 is an explanatory cross-sectional view showing another configuration example of the anisotropic conductive connector.
- FIG. 12 is an explanatory partial cross-sectional view showing another configuration example of each connection conductive portion in the anisotropic conductive connector.
- FIG. 13 is an explanatory partial cross-sectional view showing still another configuration example of each connection conductive portion in the anisotropic conductive connector.
- FIG. 14 is a partial cross-sectional view for explanation showing still another configuration example of each connection conductive portion in the anisotropic conductive connector.
- FIG. 15 is an explanatory cross-sectional view showing still another configuration example of the anisotropic conductive connector.
- FIG. 16 is an explanatory cross-sectional view showing an enlarged main part of still another configuration example of the wafer inspection apparatus according to the present invention.
- FIG. 17 is an explanatory cross-sectional view schematically showing the configuration of an example of a conventional wafer inspection apparatus.
- FIG. 1 is a schematic diagram of an example of a wafer inspection apparatus according to the present invention.
- FIG. 2 is a plan view illustrating the wafer inspection apparatus shown in FIG. 1 together with a target wafer.
- FIG. 1 is a schematic diagram of an example of a wafer inspection apparatus according to the present invention.
- FIG. 2 is a plan view illustrating the wafer inspection apparatus shown in FIG. 1 together with a target wafer.
- the wafer inspection apparatus includes an inspection circuit board 30 having a large number of inspection electrodes 31 formed on a front surface (a lower surface in FIG. 2) and an inspection circuit board 30 via an anisotropic conductive connector 20 described in detail below.
- a probe device 10 comprising a probe card 40 arranged on the surface of the probe 30 and a wafer tray serving as a heating plate on which a wafer W to be inspected is placed below the probe card 40. 58 are arranged and configured. Further, the wafer tray 58 can be moved vertically by a suitable driving means (not shown).
- the probe card 40 includes a connection circuit board 41 having a plurality of terminal electrodes 42 formed on the back surface (the top surface in FIG. 2) in accordance with a pattern corresponding to the pattern of the test electrodes 31 of the test circuit board 30, and a connection circuit board 41.
- a contact member provided on the front surface (lower surface in FIG. 2) of the circuit board 41 and having a large number of contacts (not shown) to be brought into contact with electrodes to be inspected (not shown) of the integrated circuit in the inspection target W, W It consists of:
- Examples of the material forming the inspection circuit board 30 and the connection circuit board 41 include glass, ceramics, and epoxy resin.
- Anisotropically conductive connectors (hereinafter, referred to as "inclination adjustment anisotropically conductive connectors") 20, which are arranged between the inspection circuit board 30 and the connection circuit board 41 of the probe card 40, respectively.
- the frame plate 21 has a plurality of anisotropic conductive film disposing holes 22 extending therethrough in the thickness direction. Each of the anisotropic conductive film disposing holes 22 of the frame plate 21 has a conductive material in the thickness direction.
- the elastic anisotropic conductive film 25 having a property is arranged so as to cover the hole 22 for disposing the anisotropic conductive film, and the peripheral edge of the elastic anisotropic conductive film 25 is used for disposing the anisotropic conductive film on the frame plate 21. It is fixed to and supported by the opening edge of the hole 22.
- the frame plate 21 has a plurality of positioning holes 23 for positioning the circuit board 30 for inspection and the probe card 40. In this example, four positioning holes 23 are formed at four corners of the rectangular frame plate 21
- the elastic anisotropic conductive film 25 is formed of an elastic polymer material, and is a connection target electrode, specifically, the test electrode 31 and the connection circuit board 41 of the test circuit board 30. And a plurality of connection conductive portions 26 extending in the thickness direction, respectively, and an insulating portion 27 insulating these connection conductive portions 26 from each other. RU
- connection conductive portion 26 in the elastic anisotropic conductive film 25 contains conductive particles P exhibiting magnetism densely in a state of being aligned in the thickness direction.
- the insulating portion 27 contains no or almost no conductive particles P.
- the connecting conductive portion 26 is formed such that the forces on both surfaces of the insulating portion 27 also protrude.
- the total thickness of the elastic anisotropic conductive film 25 is, for example, preferably 100 to 3000 ⁇ m, more preferably 150 to 2500 111, and particularly preferably 200 to 2000 / ⁇ .
- the film has sufficient irregularity absorption necessary for adjusting the inclination (angulation) in the entire wafer inspection apparatus, and has a sufficient thickness.
- the thickness is 100 m or more, the elastic anisotropic conductive film 25 having sufficient strength can be reliably obtained.
- the thickness is 3000 m or less, the connection conductive portion 26 having the required conductive characteristics can be formed. Obtained reliably.
- the projecting heights of the protruding portions 26A and 26B of the elastic anisotropic conductive film 25 in the connecting conductive portion 26 are preferably such that the total thereof is at least 20% of the thickness of the connecting conductive portion 26. More preferably, the size is at least 25%, particularly preferably at least 30%.
- both the inspection circuit board 30 and the probe card 40 are arranged via the anisotropic conductive connector 20 for adjusting the force and inclination.
- the anisotropic conductive connector 20 for tilt adjustment is made to be in a state of being narrowed down by the inspection circuit board 30 and the probe card 40, and each of the inspection electrodes 31 on the inspection circuit board 30 is connected to the probe card 40 for connection.
- Each of the terminal electrodes 42 of the circuit board 41 It is used while being fixed in an electrically connected state.
- the maximum distortion amount of the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for tilt adjustment is regulated between the inspection circuit board 30 and the probe card 40.
- a plurality of spacers 55 (four in this example) are provided so as to be inserted or fitted into each of the positioning holes 23 of the frame plate 21 in the anisotropic conductive connector 20 for tilt adjustment!
- a parallelism adjusting mechanism 50 for adjusting the inclination of the entire wafer inspection apparatus is provided.
- Each spacer 55 is made of, for example, an electrically insulating cylinder and has a shaft portion of a bolt 52 as a position variable mechanism 51 constituting a parallelism adjusting mechanism 50 described later. It is inserted into the internal space of the laser 55.
- each of the terminal electrodes 42 of the connection circuit board 41 faces each of the test electrodes 31 of the test circuit board 30, and the connection conductive portions 26 of the anisotropic conductive connector 20 for tilt adjustment.
- Each of the electrodes is positioned so as to face each of the connection target electrodes.
- the thickness of the spacer 55 is, for example, preferably 50% or more of the total thickness of the anisotropic conductive connector 20 for inclination adjustment, more preferably 60 to 90%. .
- the magnitude of the clamping pressure on the elastic anisotropic conductive film 25 is prevented from being excessively large, and the necessary conductive property of the connection conductive portion 26 in the elastic anisotropic conductive film 25 is reliably obtained. .
- the parallelism adjustment mechanism 50 includes a plurality of variable positions that relatively displace the inspection circuit board 30 or the probe card 40 in the thickness direction (the vertical direction in FIG. 2) of the anisotropic conductive connector 20 for tilt adjustment. With mechanism 51.
- each position variable mechanism 51 is provided with an inspection circuit.
- the bolt 52 Specifically, a bolt 52 constituting the position variable mechanism 51 is formed by a recess 32 having a head formed on the back surface of the inspection circuit board 30.
- the through hole 33 and the shaft Is fixed or passed through the through-hole 33 and extends downward, passes through the inside space of the spacer 55 and the through-hole 44 in the connection circuit board 41, and the base end of the shaft portion is connected to the probe card.
- test circuit board 30 and the probe card 40 are provided so as to be in contact with the bottom surface of the recess 43 in the test circuit board 41.
- the test circuit board 30 or the probe card 40 is fixed by preventing the movement (displacement) in the direction in which the separation distance between the cards 40 increases, and by adjusting the tightening amount of the nut 53.
- Anisotropic guide for tilt adjustment It is relatively displaced in the thickness direction of the sexual connector 20.
- the pitch of the test electrodes 31 on the test circuit board 30 is preferably, for example, 500 to 5000 m, more preferably 800 to 2500 / ⁇ .
- the required electrical connection between the test electrodes 31 and the terminal electrodes 42 of the connection circuit board 41 can be reliably achieved, and the test electrodes 31 are formed. Since the electrodes 31 can be arranged with high density, a large number of inspection electrodes 31 can be formed in accordance with the number of electrodes to be inspected on the wafer W to be inspected.
- Each of the contacts of the contact member constituting the probe card 40 is electrically connected to each of the test electrodes 31 of the test circuit board 30 via an appropriate circuit (not shown) on the connection circuit board 41. It is connected to the.
- the contact member in this example is, for example, an anisotropically conductive connector 45 having the same basic configuration as the anisotropically conductive connector 20 for tilt adjustment (hereinafter referred to as “one anisotropically conductive connector for forming a contact”) 45. It is configured.
- the connection conductive portion 47 of the elastic anisotropic conductive film 46 is formed according to a pattern corresponding to the pattern of the electrode to be inspected formed on the wafer W.
- the arrangement pitch of the conductive parts 47 is smaller than that of the anisotropic conductive connector 20 for inclination adjustment.
- reference numeral 48 denotes an insulating portion
- 49 denotes a frame plate.
- the anisotropic conductive connector 20 for tilt adjustment and the anisotropic conductive connector 45 for contact formation will be described.
- Various materials such as a metal material, a ceramic material, and a resin material are used as materials for forming the frame plates 21 and 49 of the anisotropic conductive connector 20 for adjusting the inclination and the anisotropic conductive connector 45 for forming a contact.
- iron, copper, nickel, chromium, conolt, magnesium, manganese, molybdenum, indium, lead, palladium, titanium, tungsten, aluminum, gold, platinum, silver or other metal or these Metal materials such as alloys or alloy steels, ceramic materials such as silicon nitride, silicon carbide, and alumina, non-woven cloth reinforced epoxy resin, non-woven cloth reinforced polyimide resin, non-woven cloth reinforced screw Resin materials such as maleimide triazine resin and aramide resin are exemplified.
- a linear thermal expansion coefficient is a coefficient of linear thermal expansion of a material forming the inspection circuit board 30 and the connection circuit board 41. It is preferable to use one that is equivalent or approximate to.
- both the material forming the test circuit board 30 and the material forming the connection circuit board 41 are used. It is preferable to use one that is equal to or approximate to the average linear thermal expansion coefficient. Specifically, it is preferable to use a material having a coefficient of linear thermal expansion of 5 ⁇ 10 ′′ VK or less as the material forming the frame board 21.
- the circuit board for inspection 30 and the circuit board 41 for connection are preferably used. If it is made from a glass substrate, a coefficient of linear thermal expansion was sigma preferable to use those 3X 10- 6 ⁇ 10 X 10- 6 ⁇ , circuit board 30 for inspection and the connection circuitry board 41 is but if it is made from organic substrate such as a glass epoxy substrate, and linear thermal expansion coefficient and is preferred instrument specific examples using those 6 ⁇ 10- 6 ⁇ 20 ⁇ 10- 6 ⁇ , inspection
- metal materials such as iron-nickel alloys such as stainless steel and copper alloys such as phosphor bronze, polyimide resin, liquid crystal polymer resin and the like. Fatty materials.
- a material having a linear thermal expansion coefficient equal to or close to that of the material forming the wafer to be inspected should be used. Is preferred. Specifically, if wood charge constituting the wafer is silicon, a coefficient of linear thermal expansion 1. 5 ⁇ 10- 4 ⁇ less, in particular, 3 ⁇ 10- 6 8 as preferred tool a specific example be used as the X 10- 6 ZK is I members type alloy such as invar, Elinvar alloys such as Elinvar, Suno one Inno one, this one-Honoré, 4
- Metallic materials such as alloys, non-woven non-woven reinforced organic resin materials, and resin materials such as aramide resins.
- the thickness of the frame plates 21 and 49 is not particularly limited as long as the shape can be maintained and the anisotropic conductive films 25 and 46 can be held. ⁇ m, preferably 50-250 ⁇ m.
- the elastic polymer material forming the elastic anisotropic conductive films 25 and 46 a heat-resistant polymer material having a crosslinked structure is preferable.
- Various materials can be used as the curable polymer material forming material that can be used to obtain a strong cross-linked polymer material, and specific examples thereof include silicone rubber, polybutadiene rubber, natural rubber, and polystyrene.
- Conjugated rubbers such as isoprene rubber, styrene-butadiene copolymer rubber, acrylonitrile-butadiene copolymer rubber, and their hydrogenated products, styrene butadiene-gen block copolymer rubber, styrene isoprene block copolymer Block copolymer rubbers such as coalesced products and their hydrogenated kasumu products, black-mouthed prene, urethane rubber, polyester rubber, epichloronohydrin rubber, ethylene-propylene copolymer rubber, ethylene-propylene-copolymer rubber And a soft liquid epoxy rubber.
- silicone rubber is preferred from the viewpoints of moldability and electrical properties!
- silicone rubber one obtained by crosslinking or condensing a liquid silicone rubber is preferable.
- the liquid silicone rubber may be any of a condensation type, an addition type, and a compound having a bull group-hydroxyl group. Specific examples include raw dimethyl silicone rubber, raw methyl silicone rubber, raw methyl methyl silicone rubber and the like.
- the liquid silicone rubber containing a bullet group (polydimethylsiloxane containing a bullet group) is usually prepared by using dimethyldichlorosilane or dimethyldialkoxysilane in the presence of dimethylvinylchlorosilane or dimethylvinylalkoxysilane.
- hydrolysis and condensation reactions are performed, for example, followed by fractionation by repeated dissolution and precipitation.
- Liquid silicone rubbers containing vinyl groups at both ends are polymerized with a cyclic siloxane such as otatamethylcyclotetrasiloxane in the presence of a catalyst to form a polymerization terminator such as dimethyldibutyl.
- alkalis such as tetramethylammonium hydroxide and n-butylphospho-hydroxymide or a silanolate solution thereof can be used.
- alkalis such as tetramethylammonium hydroxide and n-butylphospho-hydroxymide or a silanolate solution thereof can be used.
- Such a vinyl group-containing polydimethylsiloxane preferably has a molecular weight Mw (referred to as a standard polystyrene-converted weight average molecular weight; the same applies hereinafter) of 10,000 to 40,000.
- Mw molecular weight
- the molecular weight distribution index refers to the value of the ratio MwZMn between the standard polystyrene equivalent weight average molecular weight Mw and the standard polystyrene equivalent number average molecular weight Mn. Same as above), but those having 2 or less are preferred.
- a liquid silicone rubber containing hydroxyl groups (hydroxyl-containing polydimethylsiloxane) is usually prepared by adding dimethyldichlorosilane or dimethyldialkoxysilane in the presence of dimethylhydrochlorosilane or dimethylhydroalkoxysilane. It can be obtained by carrying out hydrolysis and condensation reactions, for example, followed by fractionation by repeated dissolution and precipitation.
- cyclic siloxane is polymerized in the presence of a catalyst in the presence of a catalyst, and as a polymerization terminator, dimethinolehydrochlorosilane, methinoreshydrochlorosilane or dimethinolehydroalkoxysilane is used as a polymerization terminator, and other reaction conditions (for example, , The amount of the cyclic siloxane and the amount of the polymerization terminator).
- alkali such as tetramethylammonium hydroxide and ⁇ -butylphosphodium hydroxide or a silanolate solution thereof can be used. For example, it is 80 to 130 ° C.
- Such a hydroxyl group-containing polydimethylsiloxane preferably has a molecular weight Mw of 10,000 to 40,000. Further, from the viewpoint of heat resistance of the obtained elastic anisotropic conductive films 25 and 46, those having a molecular weight distribution index of 2 or less are preferable.
- the above-mentioned butyl group-containing polydimethylsiloxane and hydroxyl Either one of the group-containing polydimethylsiloxanes can be used, and both are used in combination.
- a cured product of an additional liquid silicone rubber (hereinafter referred to as a “cured silicone rubber”) is used as an elastic polymer substance. ) Having a compression set at 150 ° C of 10% or less, more preferably 8% or less, and even more preferably 6% or less. If the compression set exceeds 10%, the conductive parts 26 and 47 will be permanently set when the resulting anisotropically conductive connector is used repeatedly many times or in a high-temperature environment. Immediately after this occurs, the chain of the conductive particles P in the connecting conductive portions 26 and 47 is disturbed, so that it becomes difficult to maintain the required conductivity.
- the compression set of the cured silicone rubber can be determined by a method based on JIS K 6249.
- the cured silicone rubber forming the elastic anisotropic conductive films 25, 46 preferably has a durometer A hardness of 10 to 60 at 23 ° C, more preferably 15 to 60. 55, particularly preferably 20 to 50.
- the durometer A hardness is less than 10
- the insulating parts 27 and 48 that insulate the connecting conductive parts 26 and 47 from each other are excessively distorted and the conductive part 26 In some cases, it may be difficult to maintain the required insulation between the connection portions or between the connection conductive portions 47.
- the amount of the uncured component of the cured silicone rubber is increased and the pressure is applied, the uncured component of the cured silicone rubber is converted into the inspection electrode 31 of the inspection circuit board 30 and the terminal electrode of the connection circuit board 41. The substance may adhere to 42 and have an adverse effect.
- the durometer A hardness is more than 60, a considerably large load is required to apply appropriate strain to the conductive portions 26 and 47 for connection. Deformation and destruction are likely to occur.
- the cured silicone rubber When an anisotropic conductive connector is used in a burn-in test, the cured silicone rubber preferably has a durometer A hardness of 25 to 40 at 23 ° C. Use a silicone rubber cured product with a durometer A hardness outside the above range.
- the obtained anisotropically conductive connector is used repeatedly in the burn-in test, permanent set occurs in the conductive parts 26, 47 for connection immediately and this causes As a result of the disorder of the chain of the conductive particles P, it may be difficult to maintain the required conductivity.
- the durometer A hardness of the cured silicone rubber can be measured by a method based on JIS K 6249.
- the cured silicone rubber forming the elastic anisotropic conductive films 25, 46 preferably has a bow I tear strength at 23 ° C of 8 kNZm or more, more preferably 10 kNZm. It is more preferably at least 15 kNZm, particularly preferably at least 20 kNZm. If the tear strength is less than 8 kNZm, the durability is likely to decrease when excessive strain is applied to the elastic anisotropic conductive films 25 and 46.
- the tear strength of the cured silicone rubber can be determined by a method based on JIS K 6249.
- the addition type liquid silicone rubber is a one-pack type liquid silicone rubber which is cured by a reaction between a bullet group and a Si-H bond, and is composed of a polysiloxane containing both a bullet group and a Si-H bond. (One-component type), and two-component type (two-component type), which has both vinyl group-containing polysiloxane and Si—H bond-containing polysiloxane power. It is preferable to use a mold liquid silicone rubber.
- addition type liquid silicone rubber those having a viscosity at 23 ° C of 100 to 1,250 Pa's are preferably used, more preferably 150 to 800 Pa's, and particularly preferably 250 to 800 Pa's. ⁇ 500 Pa's. If the viscosity is less than 100 Pa's, the conductive particles in the additional liquid silicone rubber are likely to settle out immediately afterwards, as a molding material for obtaining the elastic anisotropic conductive film described later. A stable storage stability, and when a parallel magnetic field is applied to the molding material layer, the conductive particles are not aligned so as to line up in the thickness direction and form a chain of conductive particles in a uniform state. Can be difficult.
- the obtained molding material has a high viscosity, so that it may be difficult to form a molding material layer in a mold, and When a parallel magnetic field is applied to the material layer, the conductive particles do not move sufficiently, so that the conductive particles do not move. It may be difficult to orient the chips so that they are aligned in the thickness direction.
- the polymer substance forming material may contain a curing catalyst for curing the polymer substance forming material.
- a curing catalyst an organic peroxide, a fatty acid azoide compound, a hydrosilylide catalyst, or the like can be used.
- organic peroxide used as the curing catalyst examples include benzoyl peroxide, bisdicyclobenzoyl peroxide, dicumyl peroxide, and ditertiary butyl peroxide.
- fatty acid azo compound used as a curing catalyst examples include azobisisobutyl nitrile.
- the catalyst that can be used as a catalyst for the hydrosilylation reaction include chloroplatinic acid and salts thereof, a siloxane complex containing a platinum-unsaturated group, a complex of butylsiloxane and platinum, and platinum and 1,3-dibutyltetramethyldisiloxane.
- known complexes such as a complex of triorganophosphine or phosphite with platinum, a chelate of acetyl acetate platinum, and a complex of cyclic gen and platinum.
- the amount of the curing catalyst used is appropriately selected in consideration of the type of the polymer-forming material, the type of the curing catalyst, and other curing conditions. 15 parts by weight.
- the conductive particles P having magnetism that constitute the conductive portions 26 and 47 for connection include, for example, particles of a metal such as iron, nickel, and cobalt, particles of an alloy thereof, or a particle containing these metals. Particles, or core particles of these particles, and the surface of the core particles is plated with a metal having good conductivity such as gold, silver, palladium, rhodium, or non-magnetic metal particles or glass beads. Inorganic material particles or polymer particles such as core particles are used as core particles, and the surface of the core particles is coated with a conductive magnetic material such as nickel or cobalt. One coated with both of the metals having good properties.
- nickel particles as core particles, the surfaces of which are plated with a metal having good conductivity such as gold or silver.
- Means for coating the surface of the core particles with a conductive metal is not particularly limited, but may be, for example, an electroless plating.
- the coverage of the conductive metal on the particle surface is preferably 40% or more, more preferably 45% or more, and particularly preferably 47 to 95%.
- the coating amount of the conductive metal is preferably from 2.5 to 50% by weight of the core particles, more preferably from 3 to 45% by weight, still more preferably from 3.5 to 40% by weight, and particularly preferably. Is from 5 to 30% by weight.
- the particle diameter of the conductive particles P is preferably 1 to 500 ⁇ m, more preferably 2 to 400 m, further preferably 5 to 300 m, and particularly preferably 10 to 300 ⁇ m. ⁇ 150 m.
- the particle size distribution (DwZDn) of the conductive particles P is preferably from 1 to LO, more preferably from 1 to 7, still more preferably from 1 to 5, and particularly preferably from 1 to 4.
- the elastic anisotropic conductive films 25 and 46 obtained can be easily deformed under pressure, and the contact between the elastic anisotropic conductive films 25 and 46 can be improved. Sufficient electrical contact is obtained between conductive particles P in connection conductive portions 26 and 47.
- the shape of the conductive particles P is not particularly limited, but is spherical, star-shaped, or agglomerated because they can be easily dispersed in the polymer-forming material. It is preferable that the particles are in a lump formed by the secondary particles.
- the water content of the conductive particles P is preferably 5% or less, more preferably 3% or less, further preferably 2% or less, and particularly preferably 1% or less.
- the conductive particles P whose surfaces are treated with a coupling agent such as a silane coupling agent can be used as appropriate. Since the surface of the conductive particles P is treated with the coupling agent, the adhesiveness between the conductive particles P and the elastic polymer material is increased, and as a result, the obtained elastic anisotropic conductive films 25 and 46 are formed. , High durability in repeated use
- the amount of the coupling agent used is appropriately selected within a range that does not affect the conductivity of the conductive particles P, but the coverage of the coupling agent on the surface of the conductive particles P (based on the surface area of the conductive core particles). More preferably, the coverage is 7 to: LOO%, more preferably 10 to: LOO%, and particularly preferably 20 to 50%. This is 100%.
- the content ratio of the conductive particles P in the conductive portions 26 and 47 for connection is 10 to 60% by volume, preferably 15 to 50%. If this ratio is less than 10%, the connection conductive portions 26 and 47 having sufficiently low electric resistance may not be obtained. On the other hand, if this ratio exceeds 60%, the obtained conductive parts 26 and 47 for connection may be fragile or may not have the necessary elasticity as the conductive parts 26 and 47 for connection immediately.
- the polymer substance-forming material may contain, if necessary, an inorganic filler such as ordinary silica powder, colloidal silica, airgel silica, and alumina.
- an inorganic filler such as ordinary silica powder, colloidal silica, airgel silica, and alumina.
- the use amount of such an inorganic filler is not particularly limited, but if it is used in an excessively large amount, it is not preferable because the movement of the conductive particles P due to a magnetic field is greatly hindered in a production method described later.
- the anisotropic conductive connector 20 for tilt adjustment as described above can be manufactured as follows. The same applies to the anisotropic conductive connector 45 for forming a contact.
- a plurality of anisotropic conductive film disposing holes 22 are formed in the frame board constituting material corresponding to the electrode regions where the connection target electrodes related to the connection circuit board 41 and the inspection circuit board 30 are formed.
- the frame plate 21 is manufactured by forming the positioning holes 23 at predetermined positions of the frame plate constituent material.
- an etching method or the like can be used as a method of forming the anisotropic conductive film disposing hole 22 and the positioning hole 23, for example.
- the polymer material shows magnetism.
- a molding material in which the conductive particles P are dispersed is prepared.
- a mold for forming the elastic anisotropic conductive film is prepared, and the prepared molding material is applied to each molding surface of the upper mold 70 and the lower mold 75 in the mold.
- the molding material layer 25B is formed by applying in accordance with this pattern, that is, the arrangement pattern of the elastic anisotropic conductive film 25 to be formed.
- a method of applying the molding material to the molding surfaces of the upper mold 70 and the lower mold 75 it is preferable to use a screen printing method. According to such a method, it is easy to apply the molding material according to a required pattern, and it is possible to apply an appropriate amount of the molding material.
- the arrangement pattern of the connection conductive portions 26 of all the elastic anisotropic conductive films 25 to be formed is formed on the lower surface of the ferromagnetic substrate 71.
- a ferromagnetic layer 72 is formed according to an antipodal pattern, and a non-magnetic layer 73 is formed in a portion other than the ferromagnetic layer 72, and the ferromagnetic layer 72 and the non-magnetic layer 72 are formed. 73 forms a molding surface.
- a ferromagnetic layer 77 is formed on the upper surface of the ferromagnetic substrate 76 according to the same pattern as the arrangement pattern of the connection conductive portions 26 of all the anisotropically conductive films 25 to be formed.
- a non-magnetic layer 78 is formed in a portion other than the ferromagnetic layer 77, and a forming surface is formed by the ferromagnetic layer 77 and the non-magnetic layer 78.
- recesses 74A and 74B are formed corresponding to the protruding portions 26A and 26B of the connecting conductive portion 26 of the elastic anisotropic conductive film 25 to be molded. Is formed.
- Ferromagnetic substrates such as iron, iron-nickel alloy, iron-cobalt alloy, nickel, and cobalt may be used as the material forming the ferromagnetic substrates 71 and 76 in each of the upper mold 70 and the lower mold 75.
- the ferromagnetic substrates 71 and 76 preferably have a thickness of 0.1 to 50 mm, have a smooth surface, are chemically degreased, and are mechanically polished. I prefer that.
- the ferromagnetic layers 72 and 77 in each of the upper mold 70 and the lower mold 75 may be made of a ferromagnetic material such as iron, iron-nickel alloy, iron-cobalt alloy, nickel, or cobalt. Metals can be used.
- the ferromagnetic layers 72 and 77 preferably have a thickness of 10 m or more. When the thickness is less than 10 m, it is difficult to apply a magnetic field having a sufficient intensity distribution to the molding material layer formed in the mold, and as a result, the connection in the molding material layer becomes difficult. Since it becomes difficult to aggregate the conductive particles P at a high density in the portion where the conductive portion 26 is to be formed, a sheet having good anisotropic conductivity may not be obtained.
- a nonmagnetic metal such as copper, a heat-resistant polymer substance, or the like may be used.
- Able to use the radiation-cured polymer material because the nonmagnetic layers 73 and 78 can be easily formed by one photolithography method.
- Photoresists such as a system dry film resist, an epoxy system liquid resist, and a polyimide system liquid resist can be used.
- the thickness of the nonmagnetic layers 73 and 78 is set in accordance with the thickness of the ferromagnetic layers 72 and 77 and the height of the projecting connecting portion 26 of the target elastic anisotropic conductive film 25.
- a plurality of openings K having a shape conforming to the planar shape of the elastic anisotropic conductive film 25 to be formed are formed on the molding surface of the lower mold 75 on which the molding material layer 25B is formed.
- the frame plate 21 is positioned and arranged via the spacer 79B, and a plurality of shapes having a shape conforming to the planar shape of the elastic anisotropic conductive film 25 to be formed are formed on the frame plate 21.
- the upper mold 70 on which the molding material layer 25B has been formed is positioned and arranged via the spacer 79A having the opening K formed thereon, and further, these are superimposed, as shown in FIG. Between the mold 70 and the lower mold 75, a molding material layer 25A having a desired form (the form of the anisotropic conductive film 25 to be formed) is formed.
- a pair of electromagnets are arranged on the upper surface of the ferromagnetic substrate 71 in the upper die 70 and the lower surface of the ferromagnetic substrate 76 in the lower die 75 and actuated.
- the conductive particles P dispersed in the shape material layer 25A are connected to the connecting conductive portion 26 located between the ferromagnetic layer 72 of the upper mold 70 and the corresponding ferromagnetic layer 77 of the lower mold 75. And are aligned in the thickness direction.
- an electrical inspection is performed on the wafer W as follows. That is, first, the nuts 53 of the respective position variable mechanisms 51 constituting the parallelism adjusting mechanism 50 are tightened by a predetermined amount and uniformly set tightening amount, as shown in FIG.
- the inspection circuit board is 30, the inclination adjusting anisotropic conductive connector 20 and the probe card 40 are temporarily fixed, and thereby, each of the test electrodes 31 on the test circuit board 30 and the connection circuit board constituting the probe card 40.
- Each of the terminal electrodes 42 in 41 is electrically connected to each of the connection conductive portions 26 in the anisotropic conductive connector 20 for tilt adjustment.
- each of the connection conductive portions 47 of the contact forming anisotropic conductive connector 45 constituting the probe card 40 is connected to each of the electrodes to be inspected of a part of the integrated circuit formed on the wafer W.
- an inspection initial state setting operation for adjusting the parallelism of the three of the inspection circuit board 30, the probe card 40, and the wafer W, that is, a parallelism adjustment process is performed. .
- each of the conductive portions 47 for connection in the anisotropically conductive connector 45 for forming a contact forming the probe card 40 is subjected to inspection of a part of the integrated circuit formed on the wafer W.
- Each of the electrodes is brought into contact with each other, and this state force is further pressed upward, so that each of the connecting conductive portions 47 in the anisotropic conductive connector 45 for contact formation and each of the electrodes to be tested in the Ueno and W are connected.
- the electrical resistance of each of the conductive portions 26 for connection in the anisotropic conductive connector 20 for tilt adjustment is measured, and the distribution of the obtained electrical resistance is substantially uniform.
- the amount of tightening of the nut 53 in each position variable mechanism 51 is set separately for each nut 53, and the amount of tightening of each nut 53 is adjusted based on these amounts of correction. Is done.
- the “substantially uniform state” refers to a state in which the electrical resistance values of all the connecting conductive portions 26 match within a range of 50 m ⁇ .
- the inspection circuit board 30, the probe card 40, and the wafer W are in a state having a high degree of parallelism.
- the conductive state is ensured by the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for tilt adjustment being pressed by the detection circuit board 30 and the connection circuit board 41 and compressed in the thickness direction.
- the inspection circuit board 30 and the anisotropically conductive connector for tilt adjustment are prohibited in a state where movement (displacement) in the direction in which the separation distance between the inspection circuit board 30 and the connection circuit board 41 is increased is prohibited.
- An inspection initial state in which a predetermined electrical inspection is fixed by the three members 20 and the probe card 40 is set.
- the electrical resistance value of all the connecting conductive parts 26 of the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for inclination adjustment is, for example, 0.1 ⁇ or less. Therefore, the clamping pressure on the elastic anisotropic conductive film 25 by the inspection circuit board 30 and the connection circuit board 41 is in a state of 0.01 to 0.4 N per connection conductive part 26. Is preferred. If the value of the sandwiching pressure is too small, it may be difficult to perform a required electrical test because the electrical resistance value of the connecting conductive portion 26 becomes high. On the other hand, if the value of the clamping pressure is excessive, the inspection circuit board 30 and the connection circuit board 41 may be deformed, so that stable electrical connection may be difficult.
- each of the connecting conductive portions 47 in the contact forming anisotropic conductive connector 45 becomes a wafer, W is in contact with each of the electrodes to be inspected of some integrated circuits formed in W This state force is further pressed upward with a load of a predetermined magnitude, thereby achieving the required electrical connection.
- the wafer W is heated to a predetermined temperature by the wafer tray 58, and in this state, the required electrical inspection (WLBI test or probe test) is performed on the wafer W.
- the probe apparatus 10 having the parallelism adjustment mechanism 50 for adjusting the inclination of the entire wafer inspection apparatus with respect to the wafer W is provided.
- the nuts 53 are independently tightened with the tightening amounts adjusted to an appropriate size, and the parallelism of the entire wafer inspection apparatus is adjusted, so that the inspection circuit board 30, the probe card 40 (the connection circuit board 41) are adjusted.
- the wafer W to be inspected have a very high degree of parallelism.
- the inspection circuit board 30, the anisotropic conductive connector 20 for tilt adjustment, and the probe are tightened by tightening the nuts 53 of the respective position variable mechanisms 51 to a predetermined size and uniformly set.
- the three members of the card 40 are temporarily fixed, and the probe device 10 is formed on the wafer W and each of the connection conductive portions 47 in the anisotropic conductive connector 45 for contact formation by further applying pressure while the entire probe device 10 is in contact with the wafer W. Electrically connected to each of the electrodes to be inspected, and each of the electrodes set so that the electrical resistance values of all the connection conductive portions 26 in the anisotropically conductive connector 20 for tilt adjustment become substantially uniform.
- the wafer W itself. Since the inclination of the inspection circuit board 30 and the probe card 40 is adjusted in consideration of the undulation and warpage of the wafer itself, the initial inspection state of the wafer inspection apparatus is changed to the inspection circuit board 30 and the probe card 40 (connection Circuit board 41) and the wafer W to be inspected have a very high degree of parallelism, which increases the separation distance between the inspection circuit board 30 and the connection circuit board 41. The displacement of the probe is prohibited by the position variable mechanism 51, and high parallelism with respect to the wafer W is maintained throughout the probe device 10. As a result, the required electrical connection state can be stably obtained with a small load, so that the intended electrical inspection of the wafer W can be performed at a high level. It can be performed reliably and reliably.
- the contact member of the probe card 40 is formed of an anisotropic conductive connector including an elastic anisotropic conductive film (anisotropic conductive sheet) 46
- the inspection is basically performed from the initial state of the inspection.
- the anisotropic conductive connector 20 for tilt adjustment by applying pressure to the inspection state where a load is applied provides the unevenness absorption by the anisotropic conductive connector 20, and the force is maintained while maintaining high parallelism to the wafer W throughout the probe device 10.
- the pressure By applying the pressure, the inherent irregularity absorbing property of the elastic anisotropic conductive film 46 in the anisotropic conductive nectar 45 for forming a contact can be obtained in a state where loss is reduced as much as possible.
- the parallelism of each of the connection conductive portions of the anisotropic conductive connector for contact formation, the electrode to be inspected formed on the wafer W, and the force of the wafer inspection apparatus is adjusted.
- FIG. 7 by electrical connection in the state of being connected, as shown in FIG. 7, the load in a state where all the connecting conductive parts have begun to contact each of the electrodes to be inspected on the wafer W.
- the initial load 1 is reached with a small load but the parallelism of the whole wafer inspection device is not adjusted, in the anisotropic conductive connector for forming contacts, all the conductive parts for connection are inspected on the wafer W.
- overdrive amount the amount of strain of the elastic anisotropic conductive film when the pressure is applied from the initial load to the inspection load in the inspection state.
- overdrive amount the amount of strain of the elastic anisotropic conductive film when the pressure is applied from the initial load to the inspection load in the inspection state.
- the anisotropic conductive connector 45 for forming a contact has a stable resistance value (conductive property) with a small load, that is, a stable electrical connection.
- the connection state can be achieved (see the load-resistance curve shown by the solid line in FIG. 7); however, if the parallelism is not adjusted, the resistance (conductive property) reaches a stable state. By this time, a large load is required (see the load-resistance curve shown by the broken line in FIG. 7).
- the overdrive amount due to the anisotropic conductive connector 20 for tilt adjustment (in this case, when the pressure is increased from the initial load 1 in the initial state of the inspection to the inspection load in the inspection state).
- the amount of distortion of the elastic anisotropic conductive film 25) is obtained, and the overdrive amount ⁇ 1 is obtained by the anisotropic conductive connector 45 for forming the contact, so that a good electrical connection state can be more reliably stabilized with a small load.
- the intended electrical inspection of the wafer W can be reliably performed with high reliability.
- the total amount of overdrive for the entire probe device 10 is calculated by using the anisotropically conductive connector 20 for tilt adjustment and the anisotropically conductive connector 45 for forming a contact each having a total thickness of 500 m.
- a length of about 60 to 120 m can be secured.
- the anisotropic conductive connector 20 for tilt adjustment is one in which the elastic anisotropic conductive film 25 is supported by the frame plate 21 made of a metal material, the tilt adjustment is performed when the frame plate 21 is held.
- the entirety of the anisotropically conductive connector 20 is not greatly deformed, so that the work of positioning the anisotropically conductive connector 20 for tilt adjustment with respect to the connection target electrode can be performed by using the position variable mechanism 51.
- the positioning operation for the connection target electrode can be easily performed.
- the inspection electrodes 31 of the inspection circuit board 30 are electrically connected by a specific inclination adjusting anisotropic conductive connector 120, so that the inspection electrodes 31 are arranged at a high density. Therefore, a large number of test electrodes 31 can be formed, so that a large number of test electrodes can be inspected at once.
- the electrical connection using the anisotropic conductive connector can achieve a stable connection state even with a small contact resistance S, so that good electrical characteristics can be obtained.
- the inspection electrode 31 of the inspection circuit board 30 and the terminal electrode 42 of the connection circuit board 41 are electrically connected via the connection conductive part 26 of the anisotropically conductive connector 20 for adjustment. Therefore, since the distance of the signal transmission system is short, it is possible to cope with electrical inspection of a high-performance integrated circuit that requires high-speed processing.
- the frame plates 21 and 49 of the anisotropically conductive connector 20 for tilt adjustment and the anisotropically conductive connector 45 for contact formation are made of a material with a small coefficient of linear thermal expansion, they are also inspected for changes in the temperature environment. Good electrical connection between the circuit board 30 for connection and the circuit board 41 for connection can be stably maintained, and good electrical connection between the probe device 10 and the wafer W can be stably maintained. it can.
- the probe device may have the configuration shown in FIG.
- the spacer 60 that regulates the maximum distortion amount of the anisotropic conductive connector 20 for tilt adjustment includes an anisotropic conductive member for tilt adjustment. It consists of a rectangular frame having an opening 63 in a region corresponding to the region where the elastic anisotropic conductive film 25 of the conductive connector 20 is formed, and is disposed on both surfaces of the frame plate 21 in the anisotropic conductive connector 20 for tilt adjustment. Then, the tilt adjusting anisotropic conductive connector 20 is supported.
- the basic configuration of this wafer inspection apparatus is the same as that of the wafer inspection apparatus shown in FIG. 2 except that spacers having different configurations are used. For convenience, the same components are used. Are denoted by the same reference numerals.
- a through hole 64 extending in the thickness direction is formed at a position corresponding to the positioning hole 23 of the anisotropic conductive connector 20 for tilt adjustment, and constitutes the position variable mechanism 51.
- the bolts 52 are inserted into the through holes 64 in each spacer 60 and the positioning holes 23 in the anisotropic conductive connector 20 for tilt adjustment, so that the inspection circuit board 30 and the anisotropic tilt adjustment
- the conductive connector 20 and the probe card 40 are connected to the test electrode 31 on the test circuit board 30 so as to face the terminal electrodes 42 on the connection circuit board 41 and to adjust the inclination of the anisotropic conductive connector 20.
- the conductive portions 26 for connection in are positioned so as to face each of the electrodes to be connected.
- the spacers 60, 60 in this example are a pair of a rectangular frame-shaped plate portion 62 made of, for example, a metal and the frame plate 21 of the anisotropic conductive connector 20 for tilt adjustment in the plate portion 62.
- a plurality of column-shaped minute projections 61 made of an elastic body are formed on the surface that is in contact with and the surface that is in contact with the inspection circuit board 30 or the connection circuit board 41.
- the total thickness of the two spacers 60 and 60 including the frame plate 21 of the anisotropically conductive connector 20 for tilt adjustment is, for example, 50% or more of the total thickness of the anisotropically conductive connector 20 for tilt adjustment.
- the size is more preferably 50 to 70%.
- the total thickness of the thickness of the two spacers 60 including the minute protrusions 61 and the thickness of the frame plate 21 in the anisotropic conductive connector 20 for tilt adjustment is equal to the thickness of the anisotropic conductive connector 20 for tilt adjustment.
- the size is preferably 90% or more of the total thickness, more preferably 90 to 95%.
- the spacer 60 having such a configuration By using the spacer 60 having such a configuration, the magnitude of the narrow pressure applied to the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for inclination adjustment is prevented from being excessive, and the connection is performed. The required conductivity is reliably obtained in the conductive section 26 for use, and the desired inclination correction function by the minute projections 61 is reliably obtained.
- a predetermined electrical inspection is performed on wafer W in the same manner as in the wafer inspection apparatus shown in FIGS. 1 and 2. That is, the nuts 53 of each position variable mechanism 51 constituting the parallelism adjusting mechanism 50 are As shown in FIG. 9, the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for tilt adjustment is connected to the circuit board 30 for inspection by tightening with the specified tightening amount.
- the circuit board 41 for inspection and the circuit board 30 for inspection and tilt adjustment are used in a state where each of the minute projections 61 of the spacer 60 is compressed in the thickness direction by being narrowly pressed while being pressed by the circuit board 41 and compressed in the thickness direction.
- the anisotropic conductive connector 20 and the probe card 40 are temporarily fixed, thereby adjusting the inclination of each of the inspection electrodes 31 on the inspection circuit board 30 and each of the terminal electrodes 42 on the connection circuit board 41. It is electrically connected through each of the connecting conductive portions 26 in the anisotropic conductive connector 20 for use.
- the wafer W to be inspected is placed on the wafer tray 58, and the wafer tray 58 is moved upward to bring the wafer W into contact with the probe card 40. From this state, the wafer W is further pressed upward, as shown in FIG. As shown, each of the connection conductive portions 47 in the anisotropic conductive connector 45 for contact formation is brought into contact with each of the electrodes to be inspected of a part of the integrated circuit formed on the wafer W. In a state where the electrical connection has been achieved by further pressing upward from above, the electrical resistance value of each of the connection conductive portions 26 in the anisotropic conductive connector 20 for tilt adjustment is measured, and the obtained electrical resistance value is obtained.
- the correction amount of the tightening amount of the nut 53 in each position variable mechanism 51 is set separately for each nut 53 so that the distribution of the nuts is substantially uniform, and based on these correction amounts, Tightening of the nut 53 's are adjusted respectively.
- the inspection circuit board 30, the probe card 40, and the wafer W are in a state having a high degree of parallelism. Then, the elastic anisotropic conductive film 25 in the anisotropic conductive connector 20 for adjusting the inclination is clamped by the inspection circuit board 30 and the connection circuit board 41 so that the conduction state is ensured and the inspection circuit board 30 is connected. In a state in which movement (displacement) in a direction in which the separation distance from the connection circuit board 41 becomes large is prohibited, the inspection circuit board 30, the inclination adjusting anisotropic conductive connector 20, and the probe card 40 are connected. An inspection initial state for performing a predetermined electrical inspection, which is a state in which the operator is fixed, is set.
- the wafer tray 58 is moved upward by an appropriate driving means, so that the contact forming anisotropic conductive connector 45 is moved.
- Each of the connection conductive portions 47 in the above is brought into contact with each of the test electrodes of a part of the integrated circuit formed on the wafer W, and this state force is further pressed upward, so that the required electrical connection is made. Is achieved.
- the wafer W is heated to a predetermined temperature by the wafer tray 58, and in this state, a required electrical inspection (WLBI test or probe test) is performed on the wafer W!
- the wafer inspection apparatus having the above configuration, basically, the same effects as those shown in FIGS. 1 and 2 can be obtained, and at the same time, the minute projections in the spacer 60 can be obtained. Since the tilt adjustment function according to 61 can be obtained, a good electrical connection state can be obtained more stably with a small load, so that the intended electrical inspection of the wafer W can be performed with high reliability. Can be performed reliably.
- the wafer inspection apparatus having the above-described configuration, it is not necessary to form the minute projections 61 of the spacer 60 on both sides, and it is also possible to adopt a configuration in which the micro projections 61 are formed on one of the surfaces. ,.
- the inspection circuit board or the connection circuit board is displaced relative to the thickness direction of the anisotropic conductive connector. And the distance between the test circuit board and the connection circuit board increases when the test electrodes on the test circuit board and the terminal electrodes on the connection circuit board are electrically connected.
- various mechanisms can be used that are not limited to a pair of fastening members consisting of bolts and nuts.
- an anisotropic conductive connector for tilt adjustment which electrically connects each of the test electrodes 31 on the test circuit board 30 and each of the terminal electrodes 42 in the connection circuit board 41, is shown in FIG.
- the elastic anisotropic conductive film 25 may have a configuration in which minute projections are formed on each connection conductive portion.
- each connection conductive portion 26 in the elastic anisotropic conductive film 25 of the inclination adjusting anisotropic conductive connector 20 has a microprojection having, for example, a plurality of columnar microprojections 28A on both end surfaces. It is assumed that a part is formed.
- each micro-projection portion 28A is the same as that of the anisotropic conductive connector 20 for tilt adjustment.
- the size is, for example, 5 to 10% of the total thickness.
- such a minute projection portion 28A is formed by forming an elastic anisotropic conductive film having a molding surface on which a concave portion for forming a minute projection portion in a desired form is formed. Can be obtained by using a metal mold.
- the shape of the minute projections in each of the connection conductive portions 26 is not particularly limited.
- the minute projections include a plurality of spherical minute projections 28B.
- it can be constituted by one composed of a plurality of wires 28C.
- the elastic anisotropic conductive film 25 itself of the tilt adjusting anisotropic conductive connector 20 itself has high irregularity absorption property, and the wafer The inclination adjusting function of the inspection device is improved, and thereby, a good electrical connection state can be more reliably and stably obtained with a small load.
- connection conductive portion 26 of the anisotropic conductive connector 20 for tilt adjustment may have a configuration having a hemispherical or elliptical spherical protruding portion 26C.
- it may be configured to have a frustum-shaped protruding portion whose diameter decreases toward the tip.
- At least one of the elastic anisotropically conductive films has a DLC film formed of at least one of the elastically anisotropically conductive films.
- a structure integrally formed so as to cover the insulating portion can be used.
- a DLC film 46A is formed so as to cover the entire surface of the elastic anisotropic conductive film 46. ing.
- the basic configuration other than having the DLC film 46A is the same as the anisotropic conductive connector shown in FIG. 2, and for convenience, the same components are denoted by the same reference numerals. It is.
- the thickness of the DLC film 46A is, for example, preferably 1 to 500 nm, more preferably 2 to 50 nm.
- the DLC film 46A preferably has a surface resistivity of 1 ⁇ 10 8 to 1 ⁇ 10 " ⁇ / port. More preferably, it is 1 X 10 1 () to 1 X ⁇ 12 ⁇ .
- the DLC film 46 ⁇ preferably has a ratio of diamond bond to graphite bond of 9: 1 to 5: 5, more preferably 8: 2 to 6: 4. A DLC film 46 ⁇ having a surface resistivity of is reliably obtained.
- the anisotropic conductive connector 45 1S for forming a contact which contacts the wafer W in the probe device 10 is formed. Since the wafer W has the elastic anisotropic conductive film 46, it is possible to prevent the wafer W from being contaminated, and it is also possible to prevent the wafer W from being contaminated in a high-temperature environment while being pressurized by the helmet or W. Even if left for a long time, the elastic anisotropic conductive film 46 can be prevented from adhering to the wafer W, thereby preventing the elastic anisotropic conductive film 46 and the wafer W from being damaged. it can. Furthermore, since the accumulation of electric charges on the surface of the elastic anisotropic conductive film 46 can be prevented or suppressed, the adverse effects of static electricity can be eliminated.
- the specific configuration of the contact member in the probe card 40 is not particularly limited.
- a contact member composed of a blade or a pin and a micro spring pin is arranged, and the contact member is anisotropic.
- a conductive sheet for example, an anisotropic conductive connector 45 shown in FIG. 2 without the frame plate 21
- a metal sheet extending through the insulating sheet in the thickness direction thereof
- a connector formed of a sheet-like connector on which a connector is arranged for example, as shown in FIG. 16, a connector formed by laminating an anisotropic conductive connector 45 and a sheet-like connector 65 can be used.
- reference numeral 66 denotes a metal body (contact)
- 67 denotes an insulating sheet.
- Diameter 8 inch silicon (coefficient of linear thermal expansion 3. 3 X 10- 6 ZK) manufactured on the wafer are respectively the dimension in the transverse direction is 11000 m, the dimension in the vertical direction is 6000 m rectangular
- a total of 64 integrated circuits were formed in a matrix, eight in the vertical direction and eight in the horizontal direction.
- Each of the integrated circuits formed on the wafer has an electrode area to be inspected at the center thereof, and the electrode area to be inspected has 60 electrodes to be inspected each made of gold-plated copper having a surface of 120 m. They are arranged in a line in a horizontal direction at a pitch. Also, two of the 60 electrodes to be inspected are electrically connected to each other.
- Each electrode to be inspected has a horizontal dimension of 80 m and a vertical dimension of 170 m, and the total number of electrodes to be inspected in the wafer is 3,840.
- all the electrodes to be inspected are electrically connected to a common bow I extension electrode (not shown) formed on the periphery of the wafer.
- this wafer is referred to as “evaluation wafer Wl”.
- the plane accuracy of the silicon wafer itself in the evaluation wafer W1 was ⁇ 8 / zm.
- evaluation wafer W2 The plane accuracy of the silicon wafer itself in this evaluation wafer W1 was ⁇ 10 m.
- a mold for forming an elastic anisotropic conductive film was produced under the following conditions.
- Ferromagnetic substrate 71, 76: material; iron, thickness; 6000 / z m
- 'Ferromagnetic layers 72, 77: material; nickel; dimensions; width 60 m, height 150 m, thickness 50 / zm, arrangement pitch (center-to-center distance); 120 m, number of ferromagnetic layers; 3840 (A total of 64 areas with 60 ferromagnetic layers are formed, corresponding to the electrode areas to be inspected for integrated circuits on the evaluation wafer W1.)
- Non-magnetic material layer (73) Material; hardened dry film resist, thickness: 80 m' Non-magnetic material layer (78): Material; hardened dry film resist, thickness: 80 m Location (74A): horizontal 60 / zm, vertical 150 / zm, depth 30 / zm
- Each of the openings (8600 m in the horizontal direction and 1450 ⁇ m in the vertical direction) formed in the wafer W1 for evaluation correspond to the electrode area to be inspected. (Two rectangles) for forming an elastic anisotropic conductive film were produced.
- the addition-type liquid silicone rubber is a two-pack type having a viscosity of liquid A of 500 Pa.s and a viscosity of liquid B of 500 Pa's.
- a cured product having a compression set of 6%, a cured product having a durometer A hardness of 40, and a cured product having a tear strength of 30 kNZm was used.
- the viscosity at 23 ⁇ 2 ° C was measured by a B-type viscometer.
- the liquid A and the liquid B in the two-part addition-type liquid silicone rubber were stirred and mixed at an equal ratio.
- the mixture is poured into a mold, and the mixture is subjected to a defoaming treatment under reduced pressure, and then a curing treatment is performed at 120 ° C. for 30 minutes to have a thickness of 12.7 mm and a diameter of 12.7 mm.
- a cylindrical body made of a 29 mm silicone rubber cured product was prepared, and post-curing was performed on the cylindrical body at 200 ° C. for 4 hours.
- the compression set at 150 ⁇ 2 ° C was measured in accordance with JIS K 6249.
- a frame plate is positioned and placed on the upper surface of the lower die of the above-mentioned die via a spacer, and the upper die is positioned and placed on this frame plate via a spacer.
- the molding material prepared was filled in a molding space formed by the upper mold, the lower mold, the two spacers, and the frame plate to form a molding material layer.
- the molding material layer formed between the upper mold and the lower mold is heated to 100 ° C.
- an elastic anisotropic conductive film was formed in each of the holes for disposing the elastic anisotropic conductive film of the frame plate.
- post-curing treatment was performed at 200 ° C for 4 hours to produce an anisotropic conductive connector for forming a contact.
- the formed elastic anisotropic conductive film has a horizontal dimension of 8600 m and a vertical dimension of 1450 m for each of the elastic anisotropic conductive films.
- 3840 connecting conductive portions corresponding to the electrodes to be inspected on the evaluation wafer W1 are arranged at a pitch of 120 m.
- the connection circuit board is The protruding height of the protruding part on the other side to be connected to the frame is 30 m, the thickness of the insulating part is 100 m, and the thickness of each elastic anisotropic conductive film supported by the frame plate ( The thickness of one of the forked parts) is 20 m. Further, when the content ratio of the conductive particles in the connection conductive portion in each of the elastic anisotropic conductive films was examined, the volume fraction of all the connection conductive portions was about 30%. The degree of thickness variation of the entire anisotropic conductive connector for forming a contact was ⁇ 5 m.
- Alumina ceramics (linear thermal expansion coefficient: 4.8 X 10 " 6 / K) was used as the substrate material, and the surface electrode was formed on the surface according to the pattern corresponding to the pattern of the electrode to be inspected of the integrated circuit on the evaluation wafer W1.
- a connection circuit board (which has been confirmed in advance as a non-defective product) with a terminal electrode (back electrode) connected to each of the front electrodes on the back side is prepared.
- a contact forming anisotropic conductive connector is brought into contact with the surface of the contact forming anisotropic conductive connector, and each of the connection conductive portions of the contact forming anisotropic conductive connector and each of the terminal electrodes of the connection circuit board are appropriately connected to the connection circuit board. While electrically connected through a circuit, an anisotropically conductive connector for forming a contact is arranged, and
- connection circuit board is a rectangle having an overall dimension of 10 cm ⁇ 10 cm, and its plane accuracy is ⁇ 10 / zm.
- Each of the terminal electrodes (backside electrode) has a diameter of 400 ⁇ m, and is arranged in rows and columns with 10 pitches in the horizontal direction and 6 pitches in the vertical direction at a pitch of 800 ⁇ m.
- Each of the surface electrodes has a lateral dimension force of 3 ⁇ 40 ⁇ m and a vertical dimension of 170 ⁇ m, and is arranged in a row in a horizontal direction at a pitch of 120 m. You.
- the dimensions of the ferromagnetic layer (72, 77) were changed to a diameter of 300 m and a thickness of 100 m, and the recesses (74A, A mold having the same configuration except that 74B) was changed to a diameter of 300 / ⁇ and a depth of 100 m was produced.
- the frame plate thickness force OO / zm stainless steel (SUS304, saturation magnetization 0. Olw b / m 2, the coefficient of linear thermal expansion: 1. 73 X 10- 5 ZK) prepared made from elastic anisotropically
- SUS304 thickness force OO / zm stainless steel
- those made of stainless steel (SUS304) having a thickness of 50 ⁇ m were prepared.
- the horizontal dimension of the elastic anisotropic conductive film placement hole in the frame plate is 8000 m
- the vertical dimension is 4800 m
- the horizontal dimension of the spacer opening is 9000 m
- the vertical dimension is The dimensional force is 800 ⁇ m.
- the addition-type liquid silicone rubber is a two-part type having a viscosity of liquid A of 180 Pa.s and a viscosity of liquid B of 180 Pa's.
- a cured product having a compression strain of 5%, a cured product having a durometer A hardness of 23, and a cured product having a tear strength of 8 kNZm was used.
- an elastic anisotropic conductive film was formed in each of the elastic conductive film arranging holes in the frame plate, thereby producing an anisotropic conductive connector for tilt adjustment.
- the formed elastic anisotropic conductive film has a horizontal dimension of 9000 m and a vertical dimension of 5800 m.
- 3840 connecting conductive portions corresponding to the terminal electrodes (back surface electrodes) of the probe card are arranged at a pitch of 800 ⁇ m.
- the diameter is 300 m
- the total thickness force is 00 / ⁇
- the protruding height of the protruding portion on one side and the protruding portion on the other side is 100 m
- the thickness of the insulating part is 200 m.
- the thickness of each of the conductive films supported on the frame plate (one thickness of the forked portion) is 50 ⁇ m.
- the content ratio of the conductive particles in the conductive portion for connection in each of the elastic anisotropic conductive films was examined, it was found that the volume fraction of all the conductive portions for connection was about 30%.
- the thickness variation of the entire anisotropic conductive connector for inclination adjustment was ⁇ 10 ⁇ m.
- a recess and a through hole for disposing the position variable mechanism are formed, and a recess and a through hole for disposing the position variable mechanism are formed on the connection circuit board at positions corresponding to the positioning holes of the anisotropic conductive connector for tilt adjustment.
- the inspection circuit board is a disk having a thickness of 5 mm and a diameter of 30 cm, and the plane accuracy of the area where the inspection electrodes are formed is ⁇ 10 ⁇ m.
- Each of the test electrodes has a diameter force of 00 ⁇ m and is arranged at a pitch of 800 m.
- the size of the opening diameter of the through hole for arranging the position variable mechanism on the inspection circuit board and the connection circuit board is 3000 / zm.
- the test circuit board is mounted from one side so that the base end is exposed in the recess of the connection circuit board, and nuts are screwed into the base ends of the bolts, thereby adjusting the tilt.
- the anisotropically conductive connector for connection is configured such that each of the conductive portions for connection in the elastic anisotropically conductive film has a probe cap.
- the test circuit board is positioned so that each of the test electrodes is positioned on the conductive part for connection in the anisotropically conductive connector for tilt adjustment.
- a probe device according to the present invention which is arranged in an aligned state, was manufactured.
- precision screws with a nominal diameter of 3. Omm and a pitch of 0.35 mm were used as the bolts constituting the position variable mechanism.
- the evaluation wafer W1 is placed on a test table equipped with a heater, and the alignment is performed so that each of the conductive parts for connection of the anisotropic conductive connector for contact formation in the probe device is positioned on the electrode to be inspected on the evaluation wafer W1. Placed.
- the plane accuracy of the test bench Is ⁇ 10 / zm.
- the elastic anisotropic conductive film in the anisotropic conductive connector for tilt adjustment is pressed by the inspection circuit board and the connection circuit board.
- the inspection circuit board, the anisotropically conductive connector for tilt adjustment, and the connection circuit board are temporarily fixed. And the terminal electrodes on the connection circuit board are electrically connected to each other through the connection conductive portions of the tilt adjustment anisotropic conductive connector.
- the level of variation of the height level of the surface of the probe card on which the terminal electrodes are formed with respect to the surface of the evaluation wafer on which the electrodes to be inspected is formed is ⁇ 15 ⁇ m
- the inspection circuit board has The degree of variation in the height level of the surface on which the inspection electrode is formed with respect to the surface of the evaluation wafer on which the electrode to be inspected is formed is ⁇ 20 ⁇ m.
- each of the conductive portions for connection in the anisotropic conductive connector for contact formation is connected to each of the electrodes to be inspected on the evaluation wafer W1.
- the state force was further pressed upward, and in a state where the electrical connection was achieved, the electric resistance value of each of the connection conductive parts in the anisotropic conductive connector was measured and obtained.
- Set the correction amount of the nut tightening amount in each position variable mechanism so that the electric resistance value becomes substantially uniform, and individually adjust the nut tightening amount in each position variable mechanism based on this correction amount. Repeat the operation as necessary! ⁇ Adjust the parallelism of the whole wafer inspection system and set the initial inspection state.
- the electrical resistance value of all the conductive parts for connection of the elastic anisotropic conductive film in the anisotropic conductive connector for inclination adjustment is 0.1 ⁇ or less (the electric resistance value is in the range of 50 m ⁇ ),
- the pressing force on the elastic anisotropic conductive film between the inspection circuit board and the connection circuit board was set to 8 g per connection conductive part.
- test table is moved upward so that each of the connection conductive portions in the anisotropic conductive connector for contact formation is brought into contact with each of the electrodes to be inspected on the evaluation wafer W1, and from this state further downward.
- 38kg load conductive for connection of anisotropic conductive connector for contact formation
- the load applied to each part is pressurized at an average of about 10 g) .
- the test 1 shown below is performed, and the test electrodes of the test circuit board with respect to the test electrodes of the evaluation wafer W1 are tested. Inspection of the electrical connection state revealed that the proportion of the conductive part for connection having a conduction resistance of less than 1 ⁇ was 100%.
- the initial state of the inspection is set by the same method as described above, and the test table is moved upward to apply pressure to each of the conductive parts for connection in the anisotropic conductive connector for contact formation.
- the test table is moved upward to apply pressure to each of the conductive parts for connection in the anisotropic conductive connector for contact formation.
- the average load applied to each conductive part for connection of the anisotropic conductive connector for contact formation is about 10 g).
- the electrical connection state of the test electrode of the test circuit board to the test electrode of the evaluation wafer W1 was examined.
- the ratio of the conductive portion pairs having a resistance of 10 M ⁇ or more was 0%, and it was confirmed that a good electrical connection state was achieved for all the electrodes to be inspected.
- the electrical resistance between the 3840 test electrodes on the test circuit board and the bow I of the evaluation weno and W1 was determined by the electrical resistance of the conductive part for connection (hereinafter, “ The measurement was made sequentially as “conduction resistance”.), And the proportion of the conductive part for connection with a conduction resistance of less than 1 ⁇ was calculated.
- the electrical resistance between two adjacent test electrodes on the test circuit board is defined as the electric resistance between two adjacent connection conductive parts (hereinafter referred to as “conductive part pair”). Electrical resistance (hereinafter referred to as “insulation resistance”) was measured sequentially, and the ratio of conductive parts with an insulation resistance of 10 ⁇ ⁇ or more was calculated.
- test table was heated to 85 ° C. while the evaluation wafer W1 was pressed under the above conditions by the entire probe device, and the same test 1 as above was performed.
- the proportion of the conductive portion for connection having a resistance of less than 1 ⁇ was 100%.
- the initial state of the inspection was set by the same method as above, and the same test 2 as above was performed.As a result, the ratio of the conductive part pairs having an insulation resistance of 10 M ⁇ or more was 0%. And good electrical connection is maintained for all the electrodes under test. In addition, it was confirmed that a good electrical connection state can be stably obtained even with environmental changes such as heat history due to temperature changes.
- the strain amount (overdrive amount) of the film was 80 ⁇ m, and it was confirmed that the desired unevenness absorbability was obtained with a small load.
- Example 1 except that the spacer having the following configuration was used as the spacer for regulating the amount of distortion, and the spacer was arranged on both surfaces of the frame plate of the anisotropic conductive connector for adjusting the inclination.
- a probe device (see FIG. 5) having the same configuration as that manufactured in Example 1 was manufactured.
- the spacer is formed on a rectangular frame-shaped plate-shaped portion having an opening in a region corresponding to the region where the elastic anisotropic conductive film is formed in the anisotropically conductive connector for tilt adjustment, and formed on both surfaces of the plate-shaped portion. And a plurality of minute projections made of an elastic body.
- the plate is made of stainless steel and has a thickness of 50 m.
- the microprojections are made of silicone rubber and have a cylindrical shape with a diameter of 50 111 and a projection height of 40 / zm (20% of the total thickness of the anisotropic conductive connector for tilt adjustment). It is.
- the total thickness of the two spacers including the frame plate in the anisotropically conductive connector for tilt adjustment is 360 m (90% of the total thickness of the anisotropically conductive connector for tilt adjustment).
- the anisotropic conductive film in the anisotropically conductive connector for tilt adjustment is pressed by the inspection circuit board and the connection circuit board and compressed in the thickness direction.
- the electrodes to be inspected on the evaluation wafer W1 are formed on the surface on which the terminal electrodes of the probe card are formed.
- the degree of variation of the height level with respect to the contacted surface is ⁇ 20 m, and the height level of the surface of the circuit board for inspection where the test electrodes are formed is higher than the surface of the test wafer W1 where the electrodes to be tested are formed.
- Ba The degree of cracking is ⁇ 25 m.
- the initial state of inspection (the same initial state of inspection as in Example 1) is set by adjusting the parallelism of the entire wafer inspection apparatus, and the test table is moved upward to make the anisotropic conductive connector for contact formation.
- Each of the conductive parts for connection in (1) is brought into contact with each of the electrodes to be inspected on the wafer W1 for evaluation, and a load of 38 kg is further raised from this state (an anisotropic conductive connector for forming a contact.
- the same test 1 as in Example 1 was carried out, and the electrical resistance of the test electrode of the test circuit board with respect to the test electrode of the evaluation wafer and W1 was measured. Inspection of the connection state revealed that the proportion of conductive parts for connection with a conduction resistance of less than 1 ⁇ was 100%.
- Example 2 the same test 2 as in Example 1 was performed using the evaluation wafer W2 to check the electrical connection state of the test electrode of the test circuit board to the test electrode of the test wafer W1.
- the ratio of the conductive part pairs having an insulation resistance of 10 ⁇ or more was 0%, and it was confirmed that a good electrical connection state was achieved for all the electrodes to be tested.
- test table was heated to 85 ° C. while the evaluation wafer W1 was pressed under the above conditions by the entire probe apparatus, and the same test 1 as described above was performed.
- the proportion of the conductive portion for connection having a resistance of less than 1 ⁇ was 100%.
- the initial state of the inspection was set by the same method as above, and the same test 2 as above was performed.
- the good electrical connection state is maintained for all the electrodes to be inspected, and the good electrical connection state can be stably obtained even with environmental changes such as heat history due to temperature changes. It was confirmed that.
- the film distortion (overdrive) force was 100 m, and it was confirmed that the desired unevenness absorption could be obtained with a small load.
- a comparative probe device having the same configuration as the one manufactured in the first embodiment was prepared, except that there was no variable position mechanism constituting the parallelism adjusting mechanism.
- the probe device was evaluated in the same manner as in Example 1. As a result, a poor connection was observed in some of the electrodes to be tested, and a good electrical connection state was not obtained.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067019147A KR101139666B1 (ko) | 2004-03-31 | 2005-03-30 | 프로브 장치 및 이 프로브 장치를 구비한 웨이퍼 검사 장치및 웨이퍼 검사 방법 |
US10/593,830 US7446544B2 (en) | 2004-03-31 | 2005-03-30 | Probe apparatus, wafer inspecting apparatus provided with the probe apparatus and wafer inspecting method |
EP05727781A EP1732120A4 (en) | 2004-03-31 | 2005-03-30 | PROBE DEVICE, WAFER SEARCHING DEVICE EQUIPPED WITH THE PROBE DEVICE, AND WAFER SEARCHING METHOD |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004102948 | 2004-03-31 | ||
JP2004-102948 | 2004-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005096368A1 true WO2005096368A1 (ja) | 2005-10-13 |
Family
ID=35064073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/006108 WO2005096368A1 (ja) | 2004-03-31 | 2005-03-30 | プローブ装置およびこのプローブ装置を具えたウエハ検査装置並びにウエハ検査方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7446544B2 (ja) |
EP (1) | EP1732120A4 (ja) |
KR (1) | KR101139666B1 (ja) |
CN (1) | CN100539061C (ja) |
TW (1) | TW200600795A (ja) |
WO (1) | WO2005096368A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007116826A1 (ja) | 2006-04-11 | 2007-10-18 | Jsr Corporation | 異方導電性コネクターおよび異方導電性コネクター装置 |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4727948B2 (ja) * | 2004-05-24 | 2011-07-20 | 東京エレクトロン株式会社 | プローブカードに用いられる積層基板 |
JP2006194620A (ja) * | 2005-01-11 | 2006-07-27 | Tokyo Electron Ltd | プローブカード及び検査用接触構造体 |
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 |
US20090186534A1 (en) * | 2008-01-17 | 2009-07-23 | Amphenol Corporation | Electrical Connector Contact |
WO2009107747A1 (ja) * | 2008-02-29 | 2009-09-03 | 日本発條株式会社 | 配線基板およびプローブカード |
JP5113905B2 (ja) * | 2008-04-25 | 2013-01-09 | 株式会社アドバンテスト | 試験システムおよびプローブ装置 |
JP4555362B2 (ja) * | 2008-06-02 | 2010-09-29 | 株式会社アドバンテスト | プローブ、電子部品試験装置及びプローブの製造方法 |
JP4863130B2 (ja) * | 2009-05-22 | 2012-01-25 | 山一電機株式会社 | 基板接続用コネクタ、それを備える半導体装置用ソケット、ケーブル用コネクタ、および、ボードツーボードコネクタ |
US7766672B1 (en) * | 2009-06-24 | 2010-08-03 | Cameo Communication, Inc. | Electronic connector with a circuit board sandwiched between two spacers and enclosed in a frame |
US8673416B2 (en) * | 2009-10-28 | 2014-03-18 | Xerox Corporation | Multilayer electrical component, coating composition, and method of making electrical component |
JP5379065B2 (ja) * | 2010-04-21 | 2013-12-25 | 新光電気工業株式会社 | プローブカード及びその製造方法 |
US9244099B2 (en) | 2011-05-09 | 2016-01-26 | Cascade Microtech, Inc. | Probe head assemblies, components thereof, test systems including the same, and methods of operating the same |
JP5941713B2 (ja) * | 2012-03-14 | 2016-06-29 | 東京エレクトロン株式会社 | ウエハ検査用インターフェース及びウエハ検査装置 |
JP6255914B2 (ja) * | 2013-11-07 | 2018-01-10 | 日本電産リード株式会社 | 検査治具 |
JP6218718B2 (ja) * | 2014-10-22 | 2017-10-25 | 三菱電機株式会社 | 半導体評価装置及びその評価方法 |
JP6796596B2 (ja) * | 2015-03-31 | 2020-12-09 | テクノプローベ エス.ピー.エー. | フィルタリング特性を強化した、電子機器の試験装置のプローブカード |
US10497092B2 (en) * | 2015-11-19 | 2019-12-03 | Camtek Ltd | Continuous light inspection |
DE102015120156B4 (de) * | 2015-11-20 | 2019-07-04 | Semikron Elektronik Gmbh & Co. Kg | Vorrichtung zur materialschlüssigen Verbindung von Verbindungspartnern eines Leistungselekronik-Bauteils und Verwendung einer solchen Vorrichtung |
KR101739537B1 (ko) * | 2016-05-11 | 2017-05-25 | 주식회사 아이에스시 | 검사용 소켓 및 도전성 입자 |
US20190293684A1 (en) * | 2016-05-31 | 2019-09-26 | Nidec Read Corporation | Contact conduction jig and inspection device |
JP6855185B2 (ja) * | 2016-07-27 | 2021-04-07 | 株式会社日本マイクロニクス | 電気的接続装置 |
JP6365953B1 (ja) * | 2017-03-07 | 2018-08-01 | 株式会社東京精密 | プローバ |
CN107525953A (zh) * | 2017-09-25 | 2017-12-29 | 惠科股份有限公司 | 一种探针装置 |
JP7308660B2 (ja) * | 2019-05-27 | 2023-07-14 | 東京エレクトロン株式会社 | 中間接続部材及び検査装置 |
FR3097054B1 (fr) * | 2019-06-07 | 2021-07-02 | Schneider Electric Ind Sas | Capteur de courant et système de mesure comportant un tel capteur de courant |
CN110426536A (zh) * | 2019-07-29 | 2019-11-08 | 重庆伟鼎电子科技有限公司 | Pcb导电布测试线路板 |
CN113967881B (zh) * | 2020-07-22 | 2023-07-28 | 上海复旦微电子集团股份有限公司 | 用于测试的夹具、设备及系统 |
CN111929566A (zh) * | 2020-08-20 | 2020-11-13 | 厦门市三安集成电路有限公司 | 晶圆测试方法、装置及其控制设备 |
TWI739712B (zh) * | 2021-02-02 | 2021-09-11 | 漢民測試系統股份有限公司 | 生物晶片測試系統 |
CN113848459B (zh) * | 2021-10-08 | 2023-10-24 | 法特迪精密科技(苏州)有限公司 | 一种测试插座用探针 |
CN116754918B (zh) * | 2023-07-05 | 2024-03-08 | 苏州联讯仪器股份有限公司 | 一种晶圆级别的半导体高压可靠性测试夹具 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07231018A (ja) * | 1993-08-25 | 1995-08-29 | Tokyo Electron Ltd | プローブ装置 |
JP2002246428A (ja) * | 2000-12-08 | 2002-08-30 | Jsr Corp | 異方導電性シートおよびウエハ検査装置 |
JP2003031628A (ja) * | 2002-04-25 | 2003-01-31 | Hitachi Ltd | 半導体素子の製造方法および半導体素子へのプロービング方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100248569B1 (ko) * | 1993-12-22 | 2000-03-15 | 히가시 데쓰로 | 프로우브장치 |
JP2929948B2 (ja) * | 1994-09-20 | 1999-08-03 | 三菱電機株式会社 | プローブ式テストハンドラー及びそれを用いたicのテスト方法 |
JPH1123615A (ja) * | 1997-05-09 | 1999-01-29 | Hitachi Ltd | 接続装置および検査システム |
JP3467394B2 (ja) * | 1997-10-31 | 2003-11-17 | 松下電器産業株式会社 | バーンイン用ウェハカセット及びプローブカードの製造方法 |
JPH11160356A (ja) * | 1997-11-25 | 1999-06-18 | Matsushita Electric Ind Co Ltd | ウェハ一括型測定検査用プローブカードおよびセラミック多層配線基板ならびにそれらの製造方法 |
EP1200843A1 (en) * | 1999-07-28 | 2002-05-02 | Nanonexus, Inc. | Construction structures and manufacturing processes for integrated circuit wafer probe card assemblies |
JP3788258B2 (ja) * | 2001-03-27 | 2006-06-21 | Jsr株式会社 | 異方導電性コネクターおよびその応用製品 |
US6737879B2 (en) * | 2001-06-21 | 2004-05-18 | Morgan Labs, Llc | Method and apparatus for wafer scale testing |
-
2005
- 2005-03-30 US US10/593,830 patent/US7446544B2/en not_active Expired - Fee Related
- 2005-03-30 EP EP05727781A patent/EP1732120A4/en not_active Withdrawn
- 2005-03-30 WO PCT/JP2005/006108 patent/WO2005096368A1/ja not_active Application Discontinuation
- 2005-03-30 TW TW094110091A patent/TW200600795A/zh not_active IP Right Cessation
- 2005-03-30 CN CNB2005800102682A patent/CN100539061C/zh not_active Expired - Fee Related
- 2005-03-30 KR KR1020067019147A patent/KR101139666B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07231018A (ja) * | 1993-08-25 | 1995-08-29 | Tokyo Electron Ltd | プローブ装置 |
JP2002246428A (ja) * | 2000-12-08 | 2002-08-30 | Jsr Corp | 異方導電性シートおよびウエハ検査装置 |
JP2003031628A (ja) * | 2002-04-25 | 2003-01-31 | Hitachi Ltd | 半導体素子の製造方法および半導体素子へのプロービング方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1732120A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007116826A1 (ja) | 2006-04-11 | 2007-10-18 | Jsr Corporation | 異方導電性コネクターおよび異方導電性コネクター装置 |
EP2015399A1 (en) * | 2006-04-11 | 2009-01-14 | JSR Corporation | Anisotropic conductive connector and anisotropic conductive connector device |
US8124885B2 (en) | 2006-04-11 | 2012-02-28 | Jsr Corporation | Anisotropically conductive connector and anisotropically conductive connector device |
EP2015399A4 (en) * | 2006-04-11 | 2013-01-30 | Jsr Corp | ANISOTROPER CONDUCTIVE CONNECTOR AND ANISOTROPE CONDUCTIVE CONNECTOR ASSEMBLY |
TWI416111B (zh) * | 2006-04-11 | 2013-11-21 | Jsr Corp | To the electrically conductive connector and to the different conductive connector device |
Also Published As
Publication number | Publication date |
---|---|
KR20060132733A (ko) | 2006-12-21 |
CN1938842A (zh) | 2007-03-28 |
TW200600795A (en) | 2006-01-01 |
CN100539061C (zh) | 2009-09-09 |
EP1732120A4 (en) | 2012-02-29 |
US7446544B2 (en) | 2008-11-04 |
US20070178727A1 (en) | 2007-08-02 |
TWI340830B (ja) | 2011-04-21 |
KR101139666B1 (ko) | 2012-05-15 |
EP1732120A1 (en) | 2006-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005096368A1 (ja) | プローブ装置およびこのプローブ装置を具えたウエハ検査装置並びにウエハ検査方法 | |
US6969622B1 (en) | Anisotropically conductive connector, its manufacture method and probe member | |
JP3543765B2 (ja) | ウエハ検査用プローブ装置 | |
KR100844627B1 (ko) | 이방 도전성 시트, 그의 제조 방법 및 그의 응용 | |
WO2007043350A1 (ja) | 異方導電性コネクター装置および回路装置の検査装置 | |
WO2006008784A1 (ja) | 異方導電性コネクター装置および回路装置の検査装置 | |
JP3726839B2 (ja) | プローブ装置およびこのプローブ装置を具えたウエハ検査装置並びにウエハ検査方法 | |
US8410808B2 (en) | Anisotropic conductive connector, probe member and wafer inspection system | |
WO2006009144A1 (ja) | 異方導電性コネクターおよびその製造方法、アダプター装置並びに回路装置の電気的検査装置 | |
JP2004342597A (ja) | 異方導電性シートおよびその製造方法、アダプター装置およびその製造方法並びに回路装置の電気的検査装置 | |
JP2003077559A (ja) | 異方導電性コネクターおよびその製造方法並びにその応用製品 | |
WO2005101589A1 (ja) | 異方導電性シート製造用型および異方導電性シートの製造方法 | |
KR101167748B1 (ko) | 웨이퍼 검사용 탐침 부재, 웨이퍼 검사용 프로브 카드 및웨이퍼 검사 장치 | |
US20070040245A1 (en) | Anisotropic conductive sheet, manufacturing method thereof, and product using the same | |
JP2001050983A (ja) | プローブカード | |
JP4479477B2 (ja) | 異方導電性シートおよびその製造方法並びにその応用製品 | |
JP3928607B2 (ja) | 異方導電性シート、その製造方法およびその応用 | |
JP3879464B2 (ja) | 回路装置検査用異方導電性シートおよびその製造方法並びにその応用製品 | |
JP3906068B2 (ja) | 異方導電性シート、コネクターおよびウエハ検査装置 | |
JP2006284418A (ja) | ウエハ検査用プローブカードおよびウエハ検査装置 | |
JP2005222826A (ja) | 異方導電性シートの製造方法 | |
JP3700721B2 (ja) | 回路基板の検査装置および回路基板の検査方法 | |
JP2006237242A (ja) | ウエハ検査用プローブカードおよびウエハ検査装置 | |
JP2006105851A (ja) | シート状プローブおよびその製造方法並びにその応用 | |
JP2007263635A (ja) | ウエハ検査用プローブカードおよびウエハ検査装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005727781 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020067019147 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10593830 Country of ref document: US Ref document number: 2007178727 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580010268.2 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005727781 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020067019147 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 10593830 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: JP |