WO2022054802A1 - 接触端子、検査治具、検査装置、及び製造方法 - Google Patents
接触端子、検査治具、検査装置、及び製造方法 Download PDFInfo
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- WO2022054802A1 WO2022054802A1 PCT/JP2021/032881 JP2021032881W WO2022054802A1 WO 2022054802 A1 WO2022054802 A1 WO 2022054802A1 JP 2021032881 W JP2021032881 W JP 2021032881W WO 2022054802 A1 WO2022054802 A1 WO 2022054802A1
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- narrow
- end side
- shape
- tubular body
- contact terminal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
- G01R1/06733—Geometry aspects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
- G01R1/06716—Elastic
- G01R1/06722—Spring-loaded
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/286—External aspects, e.g. related to chambers, contacting devices or handlers
- G01R31/2863—Contacting devices, e.g. sockets, burn-in boards or mounting fixtures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2896—Testing of IC packages; Test features related to IC packages
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
Definitions
- the present invention relates to a contact terminal used for inspection of an inspection target, an inspection jig for bringing the contact terminal into contact with an inspection target, an inspection device provided with the inspection jig, and a manufacturing method.
- a coil spring is provided with a rod-shaped conductor that comes into contact with a conductive pad of an object to be measured and a cylindrical cylinder into which the rod-shaped conductor is inserted, and a part of the peripheral wall of the cylinder is a spring.
- Probes are known (see, for example, Patent Document 1).
- the diameter of the probe (contact terminal) used for inspection is about 0.1 mm. Therefore, when the diameter is set to 0.1 mm by the coil spring probe described above, a thinner rod-shaped conductor is inserted into the cylinder having a diameter of 0.1 mm. It was
- An object of the present invention is to provide a contact terminal, an inspection jig, an inspection device, and a manufacturing method that can easily reduce the possibility that a conductor will fall out of a tubular body.
- the contact terminal has a conductive tubular body, a substantially rod-shaped body, a rod-shaped main body located in the cylinder on one end side of the tubular body, and the one end of the tubular body.
- a first conductor having a protruding outer conductor portion is provided, and a first slit extending from one end of the tubular body toward the other end side of the tubular body is formed, and the other end side of the first slit is formed.
- a narrow portion in which the width of the first slit is narrowed is provided at a position preset to a first distance from the end portion on the one end side, and the rod-shaped body is formed on the other end side of the first slit.
- Located in the receiving portion which is the area between the end portion and the narrow portion, toward the first direction which is the width direction of the first slit and the second direction which is perpendicular to the axial direction of the tubular body. Includes an engaging portion that protrudes to a position where it can interfere with the narrow portion. It was
- the inspection jig includes the above-mentioned contact terminal and a support member for supporting the contact terminal. It was
- the inspection device inspects the inspection target based on the above-mentioned inspection jig and an electric signal obtained by bringing the contact terminal into contact with an inspection point provided on the inspection target. It is equipped with an inspection processing unit. It was
- the method for manufacturing a tubular body is the method for manufacturing a tubular body at the contact terminal described above, wherein (a1) a photoresist is formed on the outer wall surface of the conductive tubular member. (A2) The first shape is exposed to the photoresist at a position separated from the one end of the outer wall surface, and the first shape is obtained as the pair of sides facing the first direction toward the one end side. It is a shape including a first portion that gradually approaches and merges, and (a3) removes the exposed portion of the photoresist, and (a4) etches the outer wall surface exposed at the removed portion of the photoresist. At the same time, the etching is continued until the portion enlarged and removed from the first portion reaches the one end of the tubular member to form the narrow portion. It was
- the method for manufacturing a tubular body according to an example of the present invention is the method for manufacturing a tubular body at the contact terminal described above, wherein (b1) a photoresist is formed on the outer wall surface of the conductive tubular member. , (B2) The first shape and the second shape separated from the first shape are exposed to the photoresist, and in the first shape, a pair of sides facing the first direction face the one end side.
- the shape includes a first portion that gradually approaches and merges according to the above, and the second shape includes a second portion extending from one end of the outer wall surface toward the other end, and the first portion that is connected to the second portion.
- the pair of sides facing each other have a shape including a third portion that gradually approaches and merges toward the other end side, and (b3) the exposed portion of the photoresist is removed, and (b4).
- the outer wall surface exposed in the removed portion of the photoresist is etched, and the portion expanded and removed from the first portion and the portion expanded and removed from the third portion communicate with each other. The etching is continued until the narrow portion and the funnel-shaped portion are formed. It was
- the method for manufacturing the first conductor according to an example of the present invention is the method for manufacturing the first conductor in the above-mentioned contact terminal, in which (c1) one of the pair of narrow plate portions is formed and (c2). ) The central plate portion is laminated on the one narrow plate portion, and (c3) the other of the pair of narrow plate portions is laminated on the central plate portion.
- the contact terminal, the inspection jig, and the inspection device having such a configuration can easily reduce the possibility that the conductor will come off from the tubular body. Further, according to such a manufacturing method, it is easy to manufacture a contact terminal in which it is easy to reduce the possibility that the conductor will come off from the tubular body.
- FIG. 3 is a schematic cross-sectional view showing a simplified example of the configuration of the inspection jig 3 shown in FIG. 1. It is an exploded view of the contact terminal Pr seen from the X direction. It is an exploded view of the contact terminal Pr seen from the Y direction. It is an enlarged perspective view near the first slit SL1 (second slit SL2). It is a front view and a side view of the 1st conductor P1. It is a front view and a side view of the 2nd conductor P2. It is a flowchart which shows an example of the manufacturing method of a tubular body Pa.
- the inspection device 1 shown in FIG. 1 is a semiconductor inspection device for inspecting a circuit formed on an inspection object 101, for example, a semiconductor wafer. It was
- the inspection target 101 a circuit corresponding to a plurality of semiconductor chips is formed on a semiconductor substrate such as silicon.
- the inspection target may be an electronic component such as a semiconductor chip, a CSP (Chip Size Package), or a semiconductor element (IC: Integrated Circuit), and may be any other object to be electrically inspected. .. It was
- the inspection device is not limited to the semiconductor inspection device, and may be, for example, a substrate inspection device for inspecting a substrate.
- the substrate to be inspected may be, for example, a printed wiring board, a glass epoxy board, a flexible substrate, a ceramic multilayer wiring board, a package substrate for a semiconductor package, an interposer substrate, a film carrier, or the like, and may be a liquid crystal display or an EL.
- An electrode plate for a display such as a display or a touch panel display, or an electrode plate for a touch panel or the like may be used, or various substrates may be used. It was
- the inspection device 1 shown in FIG. 1 includes an inspection unit 4, a sample table 6, and an inspection processing unit 8.
- a mounting portion 6a on which the inspection object 101 is placed is provided on the upper surface of the sample table 6, and the sample table 6 is configured to fix the inspection object 101 to be inspected at a predetermined position. ing. It was
- the mounting portion 6a is, for example, movable up and down, so that the inspection object 101 housed in the sample table 6 can be raised to the inspection position, or the inspected object 101 that has been inspected can be stored in the sample table 6. It is possible to do. Further, the mounting portion 6a can, for example, rotate the inspection object 101 to orient the orientation flat in a predetermined direction. Further, the inspection device 1 is provided with a transport mechanism such as a robot arm (not shown), and the transport mechanism can be used to mount the inspection object 101 on the mounting section 6a or to mount the inspected object 101 on the mounting section. It is carried out from 6a. It was
- the inspection unit 4 includes an inspection jig 3, a connection plate 35, and a tester head 37.
- the inspection jig 3 is a jig for contacting a plurality of contact terminals Pr with the inspection object 101 for inspection, and is configured as, for example, a so-called probe card. It was
- a plurality of chips are formed on the inspection object 101. Inspection points such as a plurality of pads and bumps are formed on each chip.
- the inspection jig 3 corresponds to a part of a region (for example, a region shown by hatching in FIG. 1, hereinafter referred to as an inspection region) among a plurality of chips formed on the inspection target 101, and each of the inspection jigs 3 in the inspection region.
- a plurality of contact terminals Pr are held so as to correspond to the inspection points. It was
- the mounting portion 6a lowers the inspection object 101, and the sample table 6 moves in parallel to move the inspection area. Then, the mounting portion 6a raises the inspection target 101 and brings the contact terminal Pr into contact with the new inspection region to perform the inspection. In this way, by performing the inspection while sequentially moving the inspection area, the inspection of the entire inspection object 101 is executed. It was
- FIG. 1 is an explanatory diagram showing an example of the configuration of the inspection device 1 simply and conceptually from the viewpoint of facilitating the understanding of the invention, and the number, density, arrangement of contact terminals Pr, and the inspection unit.
- the shape, size ratio, etc. of each part of 4 and the sample table 6 are also described in a simplified and conceptualized manner.
- the inspection area is emphasized more than that of a general semiconductor inspection device, and the inspection area may be smaller or larger. .. It was
- the tester head 37 is configured so that the connection plate 35 can be attached and detached.
- the connection plate 35 is provided with an electrode 34a, which will be described later, which is in contact with the end of each contact terminal Pr and conducts conduction.
- the tester head 37 electrically connects each electrode 34a and the inspection processing unit 8 by a cable, a connection terminal, or the like (not shown).
- the connection plate 35 may perform pitch conversion between each contact terminal Pr and the tester head 37. It was
- the inspection jig 3 includes a plurality of contact terminals Pr and a support member 31 for holding the plurality of contact terminals Pr. It was
- the inspection unit 4 electrically connects each contact terminal Pr of the inspection jig 3 to the inspection processing unit 8 or switches the connection via the tester head 37 and the connection plate 35. It has a circuit. It was
- the inspection processing unit 8 includes, for example, a power supply circuit, a voltmeter, an ammeter, a microcomputer, and the like.
- the inspection processing unit 8 controls the drive mechanism (not shown) to move and position the inspection unit 4, and brings each contact terminal Pr into contact with each inspection point of the inspection object 101. As a result, each inspection point and the inspection processing unit 8 are electrically connected.
- the inspection processing unit 8 supplies an inspection current or voltage to each inspection point of the inspection object 101 via each contact terminal Pr of the inspection jig 3 in the above-mentioned state, and the voltage obtained from each contact terminal Pr.
- the inspection target 101 such as a disconnection or a short circuit of a circuit pattern is inspected.
- the inspection processing unit 8 measures the impedance of the inspection target based on an electric signal such as a voltage or current obtained from each contact terminal Pr by supplying an alternating current or voltage to each inspection point. You may. It was
- the support member 31 shown in FIG. 2 is configured by, for example, laminating plate-shaped support plates 31a, 31b, 31c. A plurality of through holes are formed so as to penetrate the support plates 31a, 31b, 31c. It was
- Insertion holes Ha having opening holes having a predetermined diameter are formed in the support plates 31a and 31b, respectively.
- a small diameter portion Ha1 having a hole diameter smaller than that of the insertion hole Ha is formed in the support plate 31c located on the surface side facing the inspection object 101 to be inspected. Then, the insertion holes Ha of the support plates 31a and 31b and the small diameter portion Ha1 of the support plate 31c are communicated with each other to form a through hole penetrating the support member 31. It was
- the support member 31 is not limited to an example in which plate-shaped support plates 31a, 31b, and 31c are laminated, and for example, an integral member is provided with a through hole composed of an insertion hole Ha and a small diameter portion Ha1. It may be configured. Further, the structure may be such that the entire through hole has an insertion hole Ha having a predetermined diameter. Further, instead of the example in which the support plates 31a and 31b of the support member 31 are laminated to each other, the support plate 31a and the support plate 31b may be connected to each other by, for example, a support, in a state of being separated from each other. It was
- connection plate 35 made of, for example, an insulating resin material is attached to the rear end side of the support plate 31a.
- the connection plate 35 closes the rear end side opening of the through hole, that is, the rear end surface of the insertion hole Ha.
- a wiring 34 is attached to the connection plate 35 so as to penetrate the connection plate 35 at a position facing the rear end side opening of the through hole.
- the front surface of the connection plate 35 facing the support plate 31a and the end surface of the wiring 34 are set to be flush with each other.
- the end face of the wiring 34 is an electrode 34a. It was
- the wiring 34 may be a wire space transformer in which a wire having an insulating coating on the side surface of the conductive wire material penetrates the connection plate 35 in the + Z direction from ⁇ Z.
- the distance between the inside of the substrate made of an insulating resin material or a ceramic material using MLO (Multilayer Organic) or MLC (Multilayer Ceramic) gradually decreases from the ⁇ Z direction to the + Z direction.
- It may be a conductive layer formed by patterning as described above. It was
- the contact terminal Pr includes a tubular body Pa formed in a tubular shape by a conductive material, and first and second conductors P1 and P2 formed in a rod shape by a conductive material. It was
- the first conductor P1 and the second conductor P2 for example, palladium, copper, rhodium, nickel, alloys thereof and the like can be used alone or in combination. It was
- the tubular body Pa can be formed using, for example, a tube having an outer diameter of about 25 to 300 ⁇ m and an inner diameter of about 10 to 250 ⁇ m.
- the outer diameter of the tubular body Pa can be about 120 ⁇ m
- the inner diameter can be about 100 ⁇ m
- the total length can be about 3000 ⁇ m.
- a conductor layer such as plating made of gold or an alloy thereof may be applied to the inner circumference of the tubular body Pa.
- the conductor layer can improve the conductivity of the tubular body.
- the peripheral surface of the tubular body Pa may be insulated and coated, if necessary. It was
- the first conductor P1 and the second conductor P2 have a substantially rod-like shape as a whole, for example, having a length of about 1000 to 3000 ⁇ m and a thickness of about 8 to 250 ⁇ m. It was
- a pair of first slits SL1 extending from the + Z direction end of the tubular body Pa toward the ⁇ Z direction (the other end) side of the tubular body Pa are formed.
- the pair of first slits SL1 are formed at positions facing each other in the Y direction.
- a narrow portion N1 in which the width of the first slit SL1 is narrowed is formed at a position separated from the ⁇ Z side end portion SL1a of each first slit SL1 on the + Z side by a preset first distance D1 (FIG. 4). .. It was
- each first slit SL1 is formed with a funnel-shaped portion R1 that is continuous with the + Z side of the narrow portion N1 and becomes wider toward the + Z side (FIG. 5). It was
- a pair of second slits SL2 extending from the ⁇ Z direction end of the tubular body Pa toward the + Z direction (one end) side of the tubular body Pa are formed.
- the pair of second slits SL2 are formed at positions facing each other in the Y direction.
- a narrow portion N2 in which the width of the second slit SL2 is narrowed is formed at a position separated from the + Z side end portion SL2a of the second slit SL2 on the ⁇ Z side by a first distance D1 (FIG. 4).
- the width W5 (FIG. 10) of the narrow portions N1 and N2 is substantially the same as or slightly wider than the thickness of the plate-shaped protrusions B1 and B2 described later. It was
- each second slit SL2 is formed with a funnel-shaped portion R2 that is connected to the ⁇ Z side of the narrow portion N2 and becomes wider toward the ⁇ Z side (FIG. 5). It was
- the tubular body Pa includes an end-side tubular portion PP1 connected to the ⁇ Z side of the first slit SL1, a spiral first spring portion Pe1 connected to the ⁇ Z side of the end-side tubular portion PP1, and a first spring portion. It is provided with a central side cylinder portion Pf connected to the ⁇ Z side of Pe1 (FIGS. 3 and 4).
- the tubular body Pa includes an end-side tubular portion PP2 connected to the + Z side of the second slit SL2 and a spiral second spring portion Pe2 connected to the + Z side of the end-side tubular portion PP2.
- the central side cylinder portion Pf is connected to the + Z side of Pe2. It was
- the first conductor P1 has a substantially rod-like shape extending in the Z direction as a whole.
- the first conductor P1 has a shape in which a pair of narrow plate portions PN1 are laminated on both sides of the central plate portion PL1 extending in a plate shape in the X direction (FIGS. 5 and 6).
- the narrow plate portion PN1 is narrower than the central plate portion PL1.
- the first conductor P1 may have a shape in which the central plate portion PL1 and the pair of narrow plate portions PN1 are laminated, and the central plate portion PL1 and the pair of narrow plate portions PN1 are integrated. It may be formed as one member. It was
- the first conductor P1 has a rod-shaped main body Pb1 located in the + Z-side cylinder of the cylindrical body Pa, and an outer conductor portion Pc1 protruding from the + Z-side end (one end) of the tubular body Pa (FIG. 3). .. It was
- the rod-shaped main body Pb1 includes a pair of plate-shaped protrusions B1 in the Y direction in which the central plate portion PL1 is widened on both sides in the Y direction so as to project into each narrow portion N1 (FIGS. 6 and 5). ..
- the ⁇ Z (other end) side wall surface KW1 of the plate-shaped projection B1 interferes with the ⁇ Z side end portion SL1a of the first slit SL1. As a result, the insertion position of the first conductor P1 with respect to the tubular body Pa can be positioned. It was
- the width W3 of the plate-shaped protrusion B1 in the Y direction is larger than the inner diameter of the small diameter portion Ha1 of the support plate 31c.
- the + Z side wall surface B1W of the plate-shaped projection B1 comes into contact with the surface on the ⁇ Z side of the support plate 31c, and the first conductor P1 is prevented from falling off from the support plate 31c.
- the ⁇ Z side wall surface KW1 of the plate-shaped projection B1 abuts on the ⁇ Z side end portion SL1a.
- the + Z side wall surface B1W is on the ⁇ Z side surface of the support plate 31c, and the ⁇ Z side wall surface KW1 is on the ⁇ Z side end portion SL1a, respectively. It is elastically pressure-welded. As a result, the first conductor P1 is stably held. Further, the conduction between the first conductor P1 and the tubular body Pa is stabilized. It was
- the rod-shaped main body Pb1 has a narrow plate portion PN1 widened on both sides in the Y direction on both sides of the plate-shaped projection B1 in the X direction, whereby the rod-shaped main body Pb1 is widened in the Y direction (second direction) in each receiving portion A1 of the tubular body Pa. It includes a pair of engaging portions K1 protruding from both sides.
- the engaging portion K1 so that the top of the engaging portion K1 projects toward the outer peripheral side of the inner peripheral surface of the tubular body Pa, more specifically, the inner peripheral surface of the tubular body Pa located in the narrow portion N1.
- the amount of protrusion is set.
- the engaging portion K1 is made to protrude to a position where it can interfere with the narrow portion N1. It was
- the tip of the rod-shaped main body Pb1 is located in the central cylinder portion Pf (FIG. 3). As a result, even when the first spring portion Pe1 and the second spring portion Pe2 expand and contract during the inspection, the possibility that the tip of the rod-shaped main body Pb1 is caught by the first spring portion Pe1 or the second spring portion Pe2 is reduced. It was
- the rod-shaped main body Pb1 includes a wide portion PW1 located in the end side tubular portion PP1 and a narrow portion PS1 located in the first spring portion Pe1 (FIG. 6).
- the width W1 of the narrow portion PS1 is narrower than the width W2 of the wide portion PW1. It was
- the width W2 of the wide portion PW1 is substantially the same as or slightly smaller than the inner diameter of the tubular body Pa (end side tubular portion PP1). As a result, the possibility that the first conductor P1 moves (wobbles) in the Y direction with respect to the tubular body Pa is reduced. Further, in the example shown in FIG. 2, the tubular bodies Pa of each contact terminal Pr are partitioned by the walls of the support plates 31a and 31b, but the tubular bodies Pa are not partitioned by the wall. It can also be adopted. Even when a plurality of contact terminals Pr are provided on the inspection jig 3 at narrow intervals by adopting such a structure, by providing the wide portion PW1, the tubular body of the adjacent contact terminals Pr is provided. It is possible to reduce the possibility that Pas come into contact with each other. It was
- the width W1 of the narrow portion PS1 located in the first spring portion Pe1 is smaller than the width W2, and therefore the space between the inner surface of the cylindrical body Pa (first spring portion Pe1) and the narrow portion PS1 is secured. can.
- the narrow portion PS1 located in the first spring portion Pe1 suppresses buckling when the first spring portion Pe1 expands and contracts. It was
- the narrow plate portion PN1 further includes an enlarged portion EX1 at a position on the + Z (one end) side of the narrow portion N1 and wider than the portion located at the narrow portion N1 (FIG. 5).
- the width of the narrow plate portion PN1 is narrowed so as to avoid interference with the narrow portion N1 of the first slit SL1. If the narrow plate portion PN1 extends in the + Z direction with the same width as the portion located in the narrow portion N1, the distance between the narrow plate portion PN1 and the funnel-shaped portion R1 becomes wide, so that the cylinder The shaped body Pa becomes relatively easy to move (easily rattles) in the X direction with respect to the first conductor P1. It was
- the tubular bodies Pa of each contact terminal Pr are partitioned by the walls of the support plates 31a and 31b, but the tubular bodies Pa are not partitioned by the wall. In this case, if the tubular body Pa rattles in the X direction with respect to the first conductor P1, the possibility that the adjacent tubular bodies Pa come into contact with each other increases. It was
- the second conductor P2 has a substantially rod-like shape extending in the Z direction as a whole.
- the second conductor P2 generally includes a shape in which a portion of the first conductor P1 excluding the tip shape of the outer conductor portion Pc1 is rotated by 180 degrees (+ Z and ⁇ Z are exchanged). It was
- the side wall surface B2W, the engaging portion K2, the inclined surface KS2, and the enlarged portion EX2 are each of the central plate portion PL1 of the first conductor P1, the narrow plate portion PN1, the narrow portion PS1, the wide portion PW1, and the plate-shaped protrusion B1.
- -Z side wall surface KW1, + Z side wall surface B1W, engaging portion K1, inclined surface KS1, and enlarged portion EX1 each have a corresponding shape.
- each part of the second conductor P2 can exert the same effect as each part of the first conductor P1.
- FIGS. 8 to 10. 9 and 10 also serve as an explanation of a method of forming the first slit SL1 and the second slit SL2.
- FIGS. 9, 10, 12, and 13 the reference numerals and directions relating to the second slit SL2 are shown in parentheses. It was
- a photoresist is formed on the outer wall surface of the metal tube T, which is a conductive tubular member (step S1: (b1)). It was
- step S2 FIG. 9: (b2)
- the first shape F1 is a shape including a first portion F13 in which a pair of sides F11 and F12 facing in the X direction merge while gradually approaching toward the + Z ( ⁇ Z) side.
- the second portion F21 extending in the ⁇ Z (+ Z) direction from the end E of the metal tube T and the pair of sides F22 and F23 connected to the second portion F21 and facing the X direction are ⁇ Z ( It is a shape including a third portion F24 that gradually approaches and merges toward the + Z) side. It was
- the second portion F21 may have a shape in which a pair of sides facing each other in the X direction gradually approach and merge toward the ⁇ Z (+ Z) side. It was
- step S4 FIG. 10: (b4)
- step S4 when the exposed portions corresponding to the first shape F1 and the second shape F2 are etched, the peripheral wall of the metal tube T is first removed in the thickness direction, and the first shape F1 and the second shape F2 are formed.
- the peripheral wall of the corresponding part is eroded.
- a hole slightly enlarged than the first shape F1 and a notch slightly enlarged than the second shape F2 are formed.
- the peripheral wall of the portion corresponding to the outer edge portion of the first shape F1 and the second shape F2 is further eroded, and the hole based on the first shape F1 and the notch based on the second shape F2 continue to expand. .. It was
- the portion expanded and removed from the first portion F13 and the portion expanded and removed from the third portion F24 communicate with each other, and the receiving portion A1 (A2), the narrow portion N1 (N2), and the funnel-shaped portion.
- the first slit SL1 (second slit SL2) in which R1 (R2) are connected is formed. It was
- the width W5 of the narrow portion N1 (N2) is determined by the duration of etching, it is easy to set the width W5 to a minute interval. If, in step S2, the exposure is performed in a shape in which the first shape F1 and the second shape F2 are connected from the beginning, that is, a shape in which the narrow portion N1 (N2) is spaced apart, at least the metal tube T is exposed. Etching should be continued until the thickness of the peripheral wall is removed. It was
- the narrow portion N1 (N2) is also eroded in parallel, and the width W5 is expanded.
- the width W5 expands during the time for etching the thickness of the peripheral wall of the metal tube T, it is difficult to form the width W5 at an appropriate minute interval. It was
- width W5 can be formed minutely, it becomes easy to make the tubular body Pa thinner, that is, to make the contact terminal Pr thinner. As a result, it becomes easy to inspect a smaller inspection target. It was
- the first spiral groove Pg1 and the second spiral groove Pg2 are formed on the peripheral wall of the metal tube T by various processing methods such as etching and laser processing.
- One spring portion Pe1 and the second spring portion Pe2 can be formed. It was
- the tubular body Pa does not have to include the funnel-shaped portions R1 and R2.
- a method for manufacturing the tubular body Pa when the tubular body Pa does not include the funnel-shaped portions R1 and R2 will be described with reference to FIGS. 11 to 13. It was
- a photoresist is formed on the outer wall surface of the metal tube T, which is a conductive tubular member (step S1a: (a1)). It was
- step S2a FIG. 12: (a2)
- Step S4a FIG. 13: (a4)). It was
- step S4a when the exposed portion corresponding to the first shape F1 is etched, the peripheral wall of the portion corresponding to the outer edge portion of the first shape F1 is eroded in parallel with the peripheral wall of the metal tube T being removed in the thickness direction. Will be done. As a result, a hole slightly enlarged than the first shape F1 is formed. When the etching is further continued, the peripheral wall of the portion corresponding to the outer edge portion of the first shape F1 is further eroded, and the hole based on the first shape F1 continues to expand. It was
- the portion expanded and removed from the first portion F13 reaches the end portion E, the receiving portion A1 (A2) and the narrow portion N1 (N2) are formed, and the first slit SL1 (second slit SL2) is formed. It is formed. It was
- steps S2a to S4a as well as in steps S2 to S4, even if etching is continued until the thickness of the peripheral wall of the metal tube T is removed, the first shape F1 does not reach the end portion E, or the width W5 is extremely small.
- the interval W4 is set in advance so as to be. Then, by executing steps S2a to S4a, it becomes possible to form a desired minute width W5 by controlling the etching time regardless of the thickness removal of the peripheral wall. It was
- the second conductor P2 can be manufactured in the same manner as the first conductor P1, the description thereof will be omitted.
- Various microfabrication techniques such as MEMS (Micro Electro Mechanical Systems), lithography, semiconductor manufacturing process, electrocasting, and three-dimensional molding by a 3D printer can be used for manufacturing the first conductor P1. It was
- one of the pair of narrow plate portions PN1 is formed as the first layer L1 (c1). It was
- the central plate portion PL1 is laminated as the second layer L2 on the narrow plate portion PN1 of the first layer L1 (c2).
- the other of the pair of narrow plate portions PN1 is laminated as the third layer L3 on the central plate portion PL1 of the second layer L2 (c3). It was
- the first conductor P1 (second conductor P2) is a pair of narrow plate portions PN1 (PN2) extending in a plate shape and narrower than the center plate portion PL1 (PL2) and the center plate portion PL1 (PL2). ), And a pair of narrow plate portions PN1 (PN2) are laminated on both sides of the central plate portion PL1 (PL2) in the X direction.
- PN1 narrow plate portions
- the contact terminal Pr Since the first conductor P1 (second conductor P2) has a shape in which a pair of narrow plate portions PN1 (PN2) are laminated on both sides of the central plate portion PL1 (PL2) in the X direction, the contact terminal Pr The cross section perpendicular to the axial direction is as shown in FIG. Due to this shape, the cross-sectional area of the first conductor P1 (second conductor P2) housed in the tubular body Pa is larger than that in the case where the cross-sectional shape is square. As a result, it becomes easy to reduce the electric resistance of the contact terminal Pr. It was
- the tubular body Pa, the first conductor P1 and the second conductor P2 manufactured as described above are prepared.
- the ⁇ Z side end portion of the first conductor P1 is inserted from the + Z side end portion of the tubular body Pa.
- the narrow narrow portion PS1 is inserted into the tubular body Pa first, the first conductor P1 can be smoothly inserted into the tubular body Pa. It was
- the ⁇ Z side wall surface KW1 of the plate-shaped projection B1 reaches the + Z side end portion of the tubular body Pa, the ⁇ Z side wall surface KW1 and the funnel-shaped portion R1 interfere with each other. Since the funnel-shaped portion R1 is connected to the + Z side of the narrow portion N1 and becomes wider toward the + Z side, if the first conductor P1 is continuously inserted even after the ⁇ Z side wall surface KW1 and the funnel-shaped portion R1 interfere with each other. The -Z side wall surface KW1 is guided toward the narrow portion N1, the -Z side wall surface KW1 passes through the narrow portion N1, and the plate-shaped projection B1 is located within the space between the narrow portions N1. It was
- the position of the engaging portion K1 can be positioned at an appropriate position capable of interfering with the narrow portion N1. It was
- the inclined surface KS1 of the engaging portion K1 abuts on the narrow portion N1 from the inside, and the inclined surface KS1 slides with respect to the narrow portion N1 while moving the narrow portion N1 in the outer peripheral direction.
- the engaging portion K1 crosses the narrow portion N1 and enters the receiving portion A1.
- the engaging portion K1 can be smoothly positioned in the receiving portion A1. Then, by locating the engaging portion K1 in the receiving portion A1, the engaging portion K1 engages with the narrow portion N1, so that it is easy to reduce the possibility that the first conductor P1 will come off from the tubular body Pa. Become. It was
- the engaging portions K1 and K2 may be engaged with the narrow portions N1 and N2, and may not necessarily include the inclined surfaces KS1 and KS2. It was
- the ⁇ Z side wall surface KW1 of the plate-shaped projection B1 interferes with the ⁇ Z side end portion SL1a of the first slit SL1, and the insertion position of the first conductor P1 with respect to the tubular body Pa is changed. Positioned. At this time, since the wide portion PW1 is located in the end side cylindrical portion PP1, the gap of the wide portion PW1 with respect to the inner diameter of the tubular body Pa becomes small, and the first conductor P1 is in the Y direction with respect to the tubular body Pa. The risk of moving is reduced. It was
- the second conductor P2 can be inserted into the tubular body Pa in the same manner as the first conductor P1. It was
- the first conductor P1 and the second conductor P2 may not be provided with the enlarged portions EX1 and EX2, and may not be further provided with the plate-shaped projections B1 and B2, as shown in FIG. 16, for example. It was
- first slit SL1, the second slit SL2, the plate-shaped protrusions B1 and B2, the engaging portions K1 and K2, and the enlarged portions EX1 and EX2 are provided one by one is shown, one by one is shown. There may be. However, by providing one pair at a time, the first conductor P1 and the second conductor P2 can be inserted into the cylindrical body Pa even if they are rotated 180 degrees, so that the contact terminal Pr can be easily assembled. It was
- the contact terminal Pr does not have to have the second conductor P2, and the cylindrical body Pa does not have to have the second slit SL2. Further, the tubular body Pa does not have to include the first spring portion Pe1, the second spring portion Pe2, or the central side tubular portion Pf.
- the contact terminal has a conductive tubular body, a substantially rod-shaped body, a rod-shaped main body located in the cylinder on one end side of the tubular body, and the tubular body.
- a first conductor having an outer conductor portion protruding from one end is provided, and a first slit extending from one end of the tubular body toward the other end side of the tubular body is formed, and the other end of the first slit is formed.
- a narrow portion having a narrowed width of the first slit is provided at a position preset to a first distance from the end on the side, and the rod-shaped body is the other end of the first slit.
- Located in the receiving portion which is the area between the side end and the narrow portion, in the first direction, which is the width direction of the first slit, and in the second direction, which is perpendicular to the axial direction of the tubular body. Includes an engaging portion that projects toward a position where it can interfere with the narrow portion. It was
- the engaging portion located in the receiving portion protrudes to a position where it can interfere with the narrow portion. Therefore, when the first conductor tries to come off from the tubular body, the narrow portion and the engaging portion interfere with each other. .. As a result, it becomes easy to reduce the possibility that the first conductor will come off from the tubular body. It was
- the other end side of the engaging portion is formed with an inclined surface whose protrusion amount decreases toward the other end side. It was
- the inclined surface of the engaging portion abuts against the narrow portion from the inside, and the inclined surface slides with respect to the narrow portion.
- the narrow portion is pushed open toward the outer periphery, and the engaging portion crosses the narrow portion N1 and enters the receiving portion. Therefore, the contact terminals can be easily assembled.
- the first slit is continuous with the one end side of the narrow portion and further includes a funnel-shaped portion that becomes wider toward the one end side. It was
- the engaging portion interferes with the funnel-shaped portion.
- the funnel-shaped portion is connected to the one end side of the narrow portion and becomes wider toward the one end side. Therefore, if the first conductor is continuously inserted even after the engaging portion and the funnel-shaped portion interfere with each other, the engaging portion is formed. Is guided toward the narrow part. As a result, the position of the engaging portion can be positioned at an appropriate position where it can interfere with the narrow portion. It was
- the tubular body further includes an end side cylinder portion connected to the other end side of the first slit and a spiral spring portion connected to the other end side of the end side cylinder portion. It is preferable that the rod-shaped main body further includes a wide portion located in the end side cylinder portion and a narrow portion located in the spring portion narrower than the wide portion. It was
- the narrow portion located in the spring portion is narrow, so that the distance between the inner surface of the spring portion and the narrow portion is increased.
- the spring portion expands and contracts, the possibility that the narrow portion and the spring portion rub against each other and wear is reduced.
- the wide portion located in the end-side cylinder portion of the tubular body that does not expand and contract is wider than the narrow portion, the distance between the inner surface of the end-side cylinder portion and the wide portion becomes narrow. As a result, the possibility that the first conductor moves perpendicularly to the cylindrical body is reduced. It was
- the tubular body further includes a central side cylindrical portion connected to the other end side of the spring portion, and the tip of the rod-shaped main body is located in the central side tubular portion.
- the tip of the rod-shaped body is located in the central cylinder portion avoiding the spring portion.
- first slits are formed in pairs at positions facing each other in the second direction, and the engaging portions are provided corresponding to each of the pair of first slits. It was
- the first conductor projects in a plate shape in the second direction and further includes a plate-shaped protrusion located in the narrow portion, and the engaging portion is provided on both sides of the plate-shaped protrusion in the first direction, respectively. It is preferable that it is provided. It was
- the position of the engaging portion can be positioned at an appropriate position capable of interfering with the narrow portion.
- the other end side wall surface of the plate-shaped protrusion interferes with the other end side end portion of the first slit. It was
- the insertion position of the first conductor with respect to the cylindrical body can be positioned by the other end side wall surface of the plate-shaped protrusion interfering with the other end side end portion of the first slit.
- the first conductor includes a central plate portion extending in a plate shape and a pair of narrow plate portions narrower than the central plate portion, and the pair of narrow plate portions is the central plate portion.
- the plate-like protrusion has a shape in which the central plate portion is widened in the second direction, and the engaging portion is the pair of narrow plates. It is preferable that the portion has a shape widened in the second direction. It was
- the first conductor having such a shape can be easily manufactured by a microfabrication technique capable of forming a laminate. It was
- the narrow plate portion further includes an enlarged portion that is wider than the portion located in the narrow portion at a position on the one end side of the narrow portion. It was
- the conductor cross-sectional area of the narrow plate portion is increased by having the wide enlarged portion of the narrow plate portion at a position on one end side of the narrow portion where the width is not easily restricted. As a result, it becomes easy to reduce the resistance value of the first conductor. It was
- the tubular body is further formed with a second slit having a shape obtained by rotating the first slit by 180 degrees and extending from the other end of the tubular body toward the one end side. It is preferable that a second conductor including a shape obtained by rotating a portion of the first conductor excluding the tip shape of the outer conductor portion by 180 degrees is further attached to the other end side of the first conductor. It was
- rod-shaped conductors can be attached to both ends of the cylindrical body. It was
- the inspection jig includes the above-mentioned contact terminal and a support member for supporting the contact terminal. It was
- the inspection device inspects the inspection target based on the above-mentioned inspection jig and an electric signal obtained by bringing the contact terminal into contact with an inspection point provided on the inspection target. It is equipped with an inspection processing unit. It was
- the method for manufacturing a tubular body is the method for manufacturing a tubular body at the contact terminal described above, wherein (a1) a photoresist is formed on the outer wall surface of the conductive tubular member. (A2) The first shape is exposed to the photoresist at a position separated from the one end of the outer wall surface, and the first shape is obtained as the pair of sides facing the first direction toward the one end side. It is a shape including a first portion that gradually approaches and merges, and (a3) removes the exposed portion of the photoresist, and (a4) etches the outer wall surface exposed at the removed portion of the photoresist. At the same time, the etching is continued until the portion enlarged and removed from the first portion reaches the one end of the tubular member to form the narrow portion. It was
- the method for manufacturing a tubular body according to an example of the present invention is the method for manufacturing a tubular body at the contact terminal described above, wherein (b1) a photoresist is formed on the outer wall surface of the conductive tubular member. , (B2) The first shape and the second shape separated from the first shape are exposed to the photoresist, and in the first shape, a pair of sides facing the first direction face the one end side. It is a shape including a first portion that gradually approaches and merges according to the above, and the second shape is connected to the second portion and the first portion extending from one end of the outer wall surface toward the other end.
- the pair of sides facing each other have a shape including a third portion that gradually approaches and merges toward the other end side, and (b3) the exposed portion of the photoresist is removed, and (b4).
- the outer wall surface exposed in the removed portion of the photoresist is etched, and the portion expanded and removed from the first portion and the portion expanded and removed from the third portion communicate with each other. The etching is continued until the narrow portion and the funnel-shaped portion are formed. It was
- the method for manufacturing the first conductor according to an example of the present invention is the method for manufacturing the first conductor in the above-mentioned contact terminal, in which (c1) one of the pair of narrow plate portions is formed and (c2). ) The central plate portion is laminated on the one narrow plate portion, and (c3) the other of the pair of narrow plate portions is laminated on the central plate portion. It was
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Abstract
Description
これにより、各検査点と、検査処理部8とが電気的に接続される。
狭板部PN2、幅狭部PS2、幅広部PW2、板状突起B2、+Z側壁面KW2、-Z側壁面B2W、係合部K2、傾斜面KS2、及び拡大部EX2の各部は、第一導体P1の中心板部PL1、幅狭板部PN1、幅狭部PS1、幅広部PW1、板状突起B1、-Z側壁面KW1、+Z側壁面B1W、係合部K1、傾斜面KS1、及び拡大部EX1の各部にそれぞれ対応する形状を有している。その結果、第二導体P2の各部は、第一導体P1の各部と同様の効果を奏することができる。
第二スリットSL2を備えていなくてもよい。また、筒状体Paは、第一ばね部Pe1、第二ばね部Pe2、又は中央側筒部Pfを備えていなくてもよい。
Claims (16)
- 導電性を有する筒状体と、 略棒状形状を有し、前記筒状体の一端側の筒内に位置する棒状本体及び前記筒状体の前記一端から突出する外部導体部を有する第一導体とを備え、 前記筒状体の一端から前記筒状体の他端側に向かって延びる第一スリットが形成され、 前記第一スリットの前記他端側の端部から前記一端側に予め設定された第一距離離間した位置に、前記第一スリットの幅が狭まった狭小部が設けられ、 前記棒状本体は、前記第一スリットの、前記他端側の端部と前記狭小部との間の領域である受入部内に位置し、前記第一スリットの幅方向である第一方向及び前記筒状体の軸方向に対して垂直な第二方向に向かって前記狭小部と干渉可能な位置まで突出する係合部を含む接触端子。
- 前記係合部の前記他端側には、前記他端側に向かうに従って突出量が減少する傾斜面が形成されている請求項1記載の接触端子。
- 前記第一スリットは、前記狭小部の前記一端側に連なると共に、前記一端側に向かうに従って幅広となる漏斗状部をさらに含む請求項1又は2に記載の接触端子。
- 前記筒状体は、前記第一スリットの前記他端側に連なる端部側筒部と、前記端部側筒部の前記他端側に連なる螺旋状のばね部とをさらに含み、 前記棒状本体は、前記端部側筒部内に位置する幅広部と、前記幅広部よりも幅狭の前記ばね部内に位置する
幅狭部とをさらに含む請求項1~3のいずれか一項に記載の接触端子。 - 前記筒状体は、前記ばね部の前記他端側に連なる中央側筒部をさらに含み、 前記棒状本体の先端は、前記中央側筒部内に位置する請求項4に記載の接触端子。
- 前記第一スリットは、前記第二方向に相対向する位置に一対、形成され、 前記係合部は、前記一対の第一スリットのそれぞれに対応して設けられている請求項1~5のいずれか一項に記載の接触端子。
- 前記第一導体は、前記第二方向に板状に突出し、前記狭小部内に位置する板状突起をさらに含み、 前記係合部は、前記板状突起の前記第一方向両側に、それぞれ設けられている請求項1~6のいずれか1項に記載の接触端子。
- 前記板状突起の前記他端側壁面は、前記第一スリットの前記他端側端部と干渉する請求項7に記載の接触端子。
- 前記第一導体は、板状に延びる、中心板部と前記中心板部よりも幅狭の一対の幅狭板部とを含み、前記一対の幅狭板部が前記中心板部の前記第一方向両側に積層された形状を有し、 前記板状突起は、前記中心板部が前記第二方向に幅広になった形状を有し、 前記係合部は、前記一対の幅狭板部が前記第二方向に幅広になった形状を有している請求項7又は8に記載の接触端子。
- 前記幅狭板部は、前記狭小部よりも前記一端側の位置で、前記狭小部に位置する部分よりも幅広の拡大部をさらに含む請求項9に記載の接触端子。
- 前記筒状体には、前記筒状体の前記他端から前記一端側に向かって延びる、前記第一スリットを180度回転させた形状の第二スリットがさらに形成され、 前記筒状体の前記他端側には、前記第一導体の前記外部導体部の先端形状を除く部分を180度回転させた形状を含む第二導体がさらに取り付けられている請求項1~10のいずれか1項に記載の接触端子。
- 請求項1~11のいずれか1項に記載の接触端子と、 前記接触端子を支持する支持部材とを備える検査治具。
- 請求項12に記載の検査治具と、 前記接触端子を検査対象に設けられた検査点に接触させることにより得られる電気信号に基づき、前記検査対象の検査を行う検査処理部とを備える検査装置。
- 請求項1~11のいずれか1項に記載の接触端子における筒状体の製造方法であって、(a1)導電性の筒状の部材における外壁面にフォトレジストを形成し、(a2)前記外壁面の前記一端から離間した位置において前記フォトレジストに第一形状を露光し、前記第一形状は、前記第一方向に向かい合う一対の辺が、前記一端側に向かうにしたがって徐々に近づきつつ合流する第一部分を含む形状であり、(a3)前記フォトレジストの前記露光した部分を除去し、(a4)前記フォトレジストの前記除去された部分において露出する前記外壁面をエッチングすると共に、前記第一部分から拡大して除去された部分が前記筒状の部材の前記一端に到達して前記狭小部を形成するまで前記エッチングを継続する筒状体の製造方法。
- 請求項3に記載の接触端子における筒状体の製造方法であって、(b1)導電性の筒状の部材における外壁面にフォトレジストを形成し、(b2)第一形状と、前記第一形状から離間した第二形状とを前記フォトレジストに露光し、 前記第一形状は、前記第一方向に向かい合う一対の辺が、前記一端側に向かうにしたがって徐々に近づきつつ合流する第一部分を含む形状であり、 前記第二形状は、前記外壁面の前記一端から前記他端方向に延びる第二部分と、前記第二部分に連なると共に前記第一方向に向かい合う一対の辺が、前記他端側に向かうにしたがって徐々に近づきつつ合流する第三部分とを含む形状であり、(b3)前記フォトレジストの前記露光した部分を除去し、(b4)前記フォトレジストの前記除去された部分において露出する前記外壁面をエッチングすると共に、前記第一部分から拡大して除去された部分と前記第三部分から拡大して除去された部分とが連通して前記狭小部及び前記漏斗状部を形成するまで前記エッチングを継続する筒状体の製造方法。
- 請求項9又は10に記載の接触端子における第一導体の製造方法であって、(c1)前記一対の幅狭板部のうち一方を形成し、(c2)前記一方の幅狭板部の上に前記中心板部を積層し、(c3)前記中心板部の上に前記一対の幅狭板部のうち他方を積層する第一導体の製造方法。
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CN202180062264.8A CN116057683A (zh) | 2020-09-11 | 2021-09-07 | 接触端子、检查夹具、检查装置、及制造方法 |
KR1020237011837A KR20230065312A (ko) | 2020-09-11 | 2021-09-07 | 접촉 단자, 검사 지그, 검사 장치, 및 제조 방법 |
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WO2011099371A1 (ja) * | 2010-02-12 | 2011-08-18 | 株式会社ルス・コム | 通電検査治具用接触子の製造方法及び、これにより製造した通電検査治具用接触子、並びにこれを備えている通電検査治具 |
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JP2019052996A (ja) * | 2017-09-19 | 2019-04-04 | 日本電産リード株式会社 | 接触端子、検査治具、及び検査装置 |
JP2019053002A (ja) * | 2017-09-19 | 2019-04-04 | 日本電産リード株式会社 | 接触端子、検査治具、及び検査装置 |
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JP4031007B2 (ja) | 2005-07-15 | 2008-01-09 | 日本電子材料株式会社 | 垂直コイルスプリングプローブ及びこれを用いたプローブユニット |
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- 2021-08-30 TW TW110131991A patent/TW202210838A/zh unknown
- 2021-09-07 KR KR1020237011837A patent/KR20230065312A/ko unknown
- 2021-09-07 WO PCT/JP2021/032881 patent/WO2022054802A1/ja active Application Filing
- 2021-09-07 CN CN202180062264.8A patent/CN116057683A/zh active Pending
- 2021-09-07 JP JP2022547607A patent/JPWO2022054802A1/ja active Pending
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WO2011099371A1 (ja) * | 2010-02-12 | 2011-08-18 | 株式会社ルス・コム | 通電検査治具用接触子の製造方法及び、これにより製造した通電検査治具用接触子、並びにこれを備えている通電検査治具 |
JP2015141200A (ja) * | 2014-01-28 | 2015-08-03 | 旺▲夕▼科技股▲分▼有限公司 | スプリングプローブおよびその製造方法 |
JP2019052996A (ja) * | 2017-09-19 | 2019-04-04 | 日本電産リード株式会社 | 接触端子、検査治具、及び検査装置 |
JP2019053002A (ja) * | 2017-09-19 | 2019-04-04 | 日本電産リード株式会社 | 接触端子、検査治具、及び検査装置 |
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KR20230065312A (ko) | 2023-05-11 |
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