WO2009099183A1 - プローブ針およびその製造方法 - Google Patents
プローブ針およびその製造方法 Download PDFInfo
- Publication number
- WO2009099183A1 WO2009099183A1 PCT/JP2009/052053 JP2009052053W WO2009099183A1 WO 2009099183 A1 WO2009099183 A1 WO 2009099183A1 JP 2009052053 W JP2009052053 W JP 2009052053W WO 2009099183 A1 WO2009099183 A1 WO 2009099183A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- probe needle
- manufacturing
- grinding
- metal wire
- tip
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/16—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers or record player styli
-
- 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
- G01R1/0675—Needle-like
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R3/00—Apparatus or processes specially adapted for the manufacture or maintenance of measuring instruments, e.g. of probe tips
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
Definitions
- the present invention relates to a probe needle and a method for manufacturing the probe needle, in particular, during the bending process of the tip portion, and effectively suppressing breakage of the tip portion of the probe needle when used as a product, the product yield of the probe needle,
- the present invention relates to a probe needle capable of greatly improving quality and durability and a method for manufacturing the probe needle.
- a wafer test performed in a semiconductor integrated circuit wafer test process
- a card is used, and a wafer test is performed in which the probe needle of the probe card is brought into contact with the semiconductor integrated circuit at a predetermined contact pressure to confirm conduction and confirm the normal operation of each circuit.
- a metal material mainly composed of a tungsten-based material, a noble metal material, a noble metal alloy material or the like is generally widely used.
- a high-strength and high-hardness rhenium tungsten (Re-W) containing about 1 to 30% by mass of rhenium is used.
- the probe needle is made of various materials as described above, and a metal wire having a diameter of about 70 ⁇ m to 400 ⁇ m is cut to a length of about 30 mm to 100 mm, and its tip is sharply machined, and then shown in FIG. As described above, the probe needle 1 is processed into a predetermined shape having a bent portion 7 by bending near the distal end portion 2 and attached to the probe card. (For example, refer to Patent Document 1).
- the bending process for forming into a predetermined shape is generally performed by applying a stress in the bending direction to the metal wire with the tip fixed, or by molding or the like. It has been implemented.
- the diameter of the main part of the metal wire is several hundreds ⁇ m, the diameter of the needle-like part of the tip is processed to an extremely thin state of only a few tens of ⁇ m, so the metal wire is bent.
- the needle-like processed portion is easily broken, the manufacturing yield in the probe needle bending process is likely to be lowered, and further, when it is incorporated and used in a probe card, it is broken in a short time. It is easy to cause a short life.
- JP-A-6-50989 JP-A-6-50989
- the present invention relates to a probe needle in which a tip portion of a metal wire is machined to form a taper portion, and a direction of a machining groove produced by machining in the taper portion of the tip portion of the probe needle and a length direction of the wire
- the probe needle can be prevented from breaking during the probe needle bending process or when used as a product. It is an object of the present invention to provide a probe needle and a method for manufacturing the probe needle that can greatly improve the manufacturing yield, quality, and durability of the probe needle.
- a probe needle according to the present invention is a probe needle in which a tip portion of a metal wire is machined to form a tapered portion, and a direction of forming a machining groove generated by machining of the tip portion and The angle formed by the length direction of the metal wire is 45 ° or less.
- the surface roughness Ra of the tip portion of the probe needle is 5 ⁇ m or less.
- the probe needle manufacturing method includes a preparation step of preparing a probe needle material by cutting a metal wire, and a processing step of forming a tapered portion by machining the tip portion of the probe needle material,
- the machining is a grinding process in which the tip portion of the probe needle material is brought into contact with the grinding surface of the rotary grinding wheel, and the traveling direction of the grinding surface of the grinding wheel and the length direction of the metal wire are formed.
- the angle is 45 degrees or less.
- the traveling direction of the grinding surface of the grinding wheel and the length direction of the metal wire are substantially parallel.
- the number of revolutions of the grinding wheel is 100 rpm or more and 20000 rpm or less.
- the cutting speed of the grinding wheel with respect to the metal wire is 0.01 mm / sec or more and 5 mm / sec or less.
- the mesh size of the abrasive grains contained in the grinding wheel it is preferable to adjust the mesh size of the abrasive grains contained in the grinding wheel to 120 or more and 2000 or less.
- the grinding step is performed in a state where a grinding liquid is applied to the grinding surface of the metal wire.
- the probe needle having the above configuration is preferably used for a probe card.
- the invention's effect According to the probe needle and the manufacturing method thereof according to the present invention, it is possible to effectively suppress the breakage of the probe needle tip during the bending process of the tip of the probe needle or when used as a product, and manufacture of the probe needle. Yield, quality and durability can be greatly improved.
- an angle formed by the forming direction of the machining groove generated by the machining of the tip portion and the length direction of the metal wire is 45. It is characterized by being less than or equal to the degree.
- tungsten such as doped tungsten containing a small amount of aluminum, potassium, silicon or the like as a doping material, or rhenium tungsten (Re-W) containing about 30 to 30% by mass of rhenium.
- a system material, a metal wire material made of a noble metal or an alloy thereof, and the like are preferably used.
- the probe needle is made of the material as described above, a metal wire having a diameter of about 70 ⁇ m to 400 ⁇ m is cut into a length of about 30 mm to 100 mm, and the tip portion is subjected to machining such as grinding to obtain a tip portion. Is processed into a sharp shape.
- the probe needle according to the present invention is characterized in that the angle formed by the machining groove generated at the tip and the length direction of the wire is 45 ° or less. On the surface of the probe needle generated by machining the tip, a fine recess is formed due to an impact load caused by the machining. Since the probe needle is formed into a predetermined shape after the tip is processed into a needle shape, a bending stress is applied to the wire wire with the tip fixed, or bending is performed by molding or the like. At the time of this bending process, the diameter of the main part of the wire wire is several hundred ⁇ m, whereas the diameter of the needle-like part at the tip is processed to an extremely thin state of only several tens of ⁇ m. There is a problem that a thin needle-like tip portion is likely to break due to a notch (notch) effect starting from a fine concave portion generated by machining.
- the wire wire is bent and easily breaks starting from this concave portion.
- the angle formed by the direction of the machining groove generated in the tip portion by machining and the length direction of the wire is set to 45 ° or less, so even when the concave portion exists on the surface, Since the forming direction exists in a direction that does not become a notch, it is possible to effectively suppress the breakage of the probe needle starting from the recess even when a pressure is applied by bending.
- the angle formed by the forming direction of the processing groove at the tip and the length direction of the wire exceeds 45 °, the concave portion of the surface generated by processing is generated in a direction perpendicular to the bending direction.
- the recess acts as a notch, and breakage due to the bending process tends to occur from the recess, which is not preferable.
- the angle formed by the forming direction of the processing groove at the tip and the length direction of the wire is more preferably 20 degrees or less, and further preferably 5 degrees or less.
- the surface roughness Ra of the tip of the probe needle according to the present invention is preferably 5 ⁇ m or less.
- the surface roughness Ra is preferably 3 ⁇ m or less.
- the probe needle according to the present invention is preferably manufactured by moving the grinding wheel relatively in a direction parallel to the length direction of the wire.
- the tip of the probe needle is processed while rotating the wire in the circumferential direction.
- the tip processing is preferably performed by grinding in order to reduce the surface roughness.
- the grinding wheel is movable in a direction parallel to the length direction of the wire.
- the parallel direction means that the moving direction of the grinding wheel is within 45 ° with respect to the length direction of the wire.
- the probe needle according to the present invention is preferably manufactured by setting the traveling direction of the grinding surface of the grinding wheel in a direction parallel to the length direction of the wire.
- the parallel direction means a direction in which the rotation direction of the grinding wheel is within 45 ° with respect to the length direction of the wire.
- the number of revolutions of the grinding wheel is 100 (rpm) to 20000 (rpm). If the number of revolutions of the grinding wheel is less than 100 (rpm), the resistance of the probe needle for grinding increases, and the surface roughness increases, which is not preferable. On the other hand, when the rotational speed of the grinding wheel is 20000 (rpm) or more, the load on the machine increases, which is not preferable. A more preferable range of the rotation speed of the grinding wheel is 500 (rpm) or more and 5000 (rpm).
- the cutting speed of the metal wire is preferably 0.01 mm / sec or more and 5 mm / sec or less.
- the processing speed becomes slow and the manufacturing cost increases, which is not preferable.
- the cutting speed of the metal wire exceeds 5 mm / sec, the cutting resistance increases, so that the roughness of the surface becomes rough and it is not preferable because it causes a recess.
- the generated recess becomes deep and large.
- a more preferable range of the wire cutting speed is 0.01 mm / sec or more and 1 mm / sec.
- the mesh size of the abrasive grains contained in the grinding wheel used in the grinding process is preferably in the range of 120 or more and 2000 or less.
- the mesh size of the abrasive grains is less than 120, the surface roughness becomes large, which is not preferable because it causes cracks.
- the mesh size exceeds 2000, the workability deteriorates, so the processing speed becomes slow and the efficiency of the manufacturing process decreases, which is not preferable.
- a more preferable range of the mesh size of the abrasive grains is 500 or more and 1500 or less.
- the grinding process of the probe needle of the present invention is performed using a grinding fluid.
- the grinding fluid it is possible to reduce the resistance to the wire wire in the grinding process, to suppress the occurrence of seizure, and to reduce the recesses generated on the surface.
- grinding waste generated by grinding can be efficiently removed, the processing accuracy can be maintained over a long period even when continuous processing is performed.
- the direction of the minute concave portion generated by the processing of the tip portion is substantially parallel to the length direction of the wire. It is possible to effectively reduce breakage starting from the recess at the time.
- Such a probe needle improves the yield in the manufacturing process of the probe needle, has high quality and durability, and is suitably used for a probe card.
- the wire diameter is 0.3 mm and the length is 50 mm.
- the materials shown in Table 1 are tungsten (W) wire, rhenium tungsten (Re-W) wire, thorium tungsten (Th- W) Metal wires made of various materials such as wires, noble metals (gold, silver, platinum, ruthenium, rhodium, osmium, iridium) wires and noble metal alloy wires were prepared.
- probe needle materials Using these metal wires (probe needle materials), a probe needle having a diameter of 5 ⁇ m at the tip of the needle and an opening angle of 3.3 ° from the tip was processed.
- a rotary disk-type grinding wheel 5 as shown in FIG. 6 was used as a means for forming a tapered portion at the tip of the metal wire (probe needle material). That is, when the grinding wheel 5 is rotated while the tip of the probe needle material 6 is brought into contact with the surface of the rotary disk-type grinding wheel 5, the probe needle material 6 is rotated around the axis at the same time. Probe needles 1a, 1b, and 1d having truncated cone-shaped tip portions 3a, 3b, and 3d as shown in 1, 2, and 4 were prepared.
- the probe needle 1a shown in FIG. 1 has an angle formed by the direction of the processed groove 4a and the length direction C of the wire of 90 degrees, and corresponds to Comparative Examples 1 to 4.
- the probe needle 1b shown in FIG. 2 has an angle formed by the direction of the processed groove 4b and the length direction C of the wire of 45 degrees, which corresponds to the first embodiment.
- the probe needles 1c and 1d shown in FIGS. 3 and 4 have an angle formed by the direction of the processing grooves 4c and 4d and the length direction C of the wire of 5 degrees or less, and correspond to Examples 3 to 12.
- the tip portion is fixed to a 30 ⁇ m hole and subjected to bending stress by applying a bending stress, as shown in FIG.
- the bent portion 7 was formed in the vicinity of the tip portion 2. Then, the incidence of defects due to breakage was measured and evaluated during the bending process, and the results shown in Table 1 below were obtained.
- the probe needles according to the respective examples in which the angle formed by the forming direction of the machining groove 4 and the length direction C of the wire was 45 degrees or less were generated by grinding. It was confirmed that since the processing groove 4 was not greatly displaced with respect to the length direction C of the wire, or both directions were substantially parallel, breakage during the bending process was reduced and the quality was greatly improved.
- the probe needle and the manufacturing method thereof according to the present invention it is possible to effectively suppress the breakage of the probe needle tip during the bending process of the tip of the probe needle or when used as a product, and manufacture of the probe needle. Yield, quality and durability can be greatly improved.
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Leads Or Probes (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
Description
本発明は、金属ワイヤの先端部を機械加工してテーパ部を形成したプローブ針において、プローブ針の先端部のテーパ部に機械加工によって生じた加工溝の方向とワイヤの長さ方向とが成す角度を45度からほぼゼロ度の範囲にし、好ましくは両方向が略平行とすることにより、プローブ針の折り曲げ加工工程中や、製品として使用されている際のプローブ針の破断を抑制し、プローブ針の製造歩留り、品質および耐久性を大幅に向上させることを可能とするプローブ針およびその製造方法を提供することを目的とするものである。
本発明に係るプローブ針およびその製造方法によれば、プローブ針の先端の折り曲げ加工工程中や、製品として用いられている際のプローブ針先端部の破断を効果的に抑制でき、プローブ針の製造歩留り、品質および耐久性を大幅に向上させることができる。
プローブ針を加工するために、線径が0.3mmであり長さが50mmであり、表1に示す材質であるタングステン(W)ワイヤ,レニウムタングステン(Re-W)ワイヤ,トリウムタングステン(Th-W)ワイヤ,貴金属(金、銀、白金、ルテニウム、ロジウム、オスミウム、イリジウム)ワイヤならびに貴金属合金ワイヤなど各種材質から成る金属ワイヤを用意した。
Claims (8)
- 金属ワイヤの先端部を機械加工してテーパ部を形成したプローブ針において、上記先端部の機械加工によって発生した加工溝の形成方向と金属ワイヤの長さ方向とが成す角度が45度以下であることを特徴とするプローブ針。
- 請求項1記載のプローブ針において、先端部の表面粗さRaが5μm以下であることを特徴とするプローブ針。
- 請求項1または請求項2のいずれか1項に記載のプローブ針の製造方法であって、
金属ワイヤを切断してプローブ針素材を調製する調製工程と、このプローブ針素材の先端部を機械加工してテーパ部を形成する加工工程とを備え、上記機械加工は上記プローブ針素材の先端部を回転式研削砥石の研削面に当接させて研削する研削加工であり、上記研削砥石の研削面の走行方向と金属ワイヤの長さ方向とが成す角度を45度以下とすることを特徴とするプローブ針の製造方法。 - 請求項3に記載のプローブ針の製造方法において、前記研削砥石の研削面の走行方向と金属ワイヤの長さ方向とがほぼ平行であることを特徴とするプローブ針の製造方法。
- 請求項3または請求項4に記載のプローブ針の製造方法において、前記研削砥石の回転数が100rpm以上20000rpm以下であることを特徴とするプローブ針の製造方法。
- 請求項3ないし請求項5のいずれか1項に記載のプローブ針の製造方法において、前記金属ワイヤに対する研削砥石の切り込み速度が0.01mm/sec以上5mm/sec以下であることを特徴とするプローブ針の製造方法。
- 請求項3ないし請求項6のいずれか1項に記載のプローブ針の製造方法において、前記研削砥石に含有される砥粒のメッシュサイズが120以上2000以下に調整することを特徴とするプローブ針の製造方法。
- 請求項3ないし請求項7のいずれか1項に記載のプローブ針の製造方法において、前記金属ワイヤの研削面に研削液を塗布した状態で研削工程を実施することを特徴とするプローブ針の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/866,397 US20100321057A1 (en) | 2008-02-06 | 2009-02-06 | Probe pin and method of manufacturing the same |
JP2009552538A JP5498173B2 (ja) | 2008-02-06 | 2009-02-06 | プローブ針およびその製造方法 |
US13/619,417 US8888558B2 (en) | 2008-02-06 | 2012-09-14 | Probe pin and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008026527 | 2008-02-06 | ||
JP2008-026527 | 2008-02-06 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/866,397 A-371-Of-International US20100321057A1 (en) | 2008-02-06 | 2009-02-06 | Probe pin and method of manufacturing the same |
US13/619,417 Division US8888558B2 (en) | 2008-02-06 | 2012-09-14 | Probe pin and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
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WO2009099183A1 true WO2009099183A1 (ja) | 2009-08-13 |
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Family Applications (1)
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PCT/JP2009/052053 WO2009099183A1 (ja) | 2008-02-06 | 2009-02-06 | プローブ針およびその製造方法 |
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US (2) | US20100321057A1 (ja) |
JP (1) | JP5498173B2 (ja) |
WO (1) | WO2009099183A1 (ja) |
Cited By (1)
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CN104849515A (zh) * | 2014-02-13 | 2015-08-19 | 日本电产理德株式会社 | 检查用触头和具备其的检查夹具及检查用触头的制造方法 |
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EP2524648B1 (en) * | 2011-05-20 | 2016-05-04 | Imec | Method for sharpening microprobe tips |
CN103620419A (zh) * | 2011-06-22 | 2014-03-05 | 名幸电子有限公司 | 螺旋探针及其制造方法 |
US11990252B2 (en) * | 2020-04-17 | 2024-05-21 | National Technology & Engineering Solutions Of Sandia, Llc | Hermetic electrical feedthrough comprising a Pt—Ni-based pin alloy |
CN112621110B (zh) * | 2020-11-13 | 2024-05-03 | 汉江工具有限责任公司 | 一种加工测量小模数齿轮测针的方法 |
USD1042181S1 (en) * | 2021-12-17 | 2024-09-17 | SensePeek AB | Electricity measuring instrument |
USD1042182S1 (en) * | 2021-12-17 | 2024-09-17 | SensePeek AB | Electricity measuring instrument |
CN114850792B (zh) * | 2022-04-28 | 2023-04-25 | 中国电子科技集团公司第十三研究所 | 一种触针式表面轮廓仪探针系统的制备方法及调校方法 |
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2009
- 2009-02-06 WO PCT/JP2009/052053 patent/WO2009099183A1/ja active Application Filing
- 2009-02-06 US US12/866,397 patent/US20100321057A1/en not_active Abandoned
- 2009-02-06 JP JP2009552538A patent/JP5498173B2/ja active Active
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2012
- 2012-09-14 US US13/619,417 patent/US8888558B2/en active Active
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JPH07276211A (ja) * | 1994-04-13 | 1995-10-24 | Akihisa Murata | 電極棒研磨機 |
JP2005001027A (ja) * | 2003-06-10 | 2005-01-06 | Kojo Seiko Kk | プローブ針の加工用研削装置 |
JP2005003516A (ja) * | 2003-06-12 | 2005-01-06 | Totoku Electric Co Ltd | プローブピン研磨装置及びプローブピンの研磨方法 |
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CN104849515A (zh) * | 2014-02-13 | 2015-08-19 | 日本电产理德株式会社 | 检查用触头和具备其的检查夹具及检查用触头的制造方法 |
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US20100321057A1 (en) | 2010-12-23 |
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JPWO2009099183A1 (ja) | 2011-05-26 |
US20130029564A1 (en) | 2013-01-31 |
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