JP6961008B2 - プローブ案内部品、プローブカードおよびパッケージ検査用ソケット - Google Patents
プローブ案内部品、プローブカードおよびパッケージ検査用ソケット Download PDFInfo
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- JP6961008B2 JP6961008B2 JP2019548833A JP2019548833A JP6961008B2 JP 6961008 B2 JP6961008 B2 JP 6961008B2 JP 2019548833 A JP2019548833 A JP 2019548833A JP 2019548833 A JP2019548833 A JP 2019548833A JP 6961008 B2 JP6961008 B2 JP 6961008B2
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- G01R1/07342—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being at an angle other than perpendicular to test object, e.g. probe card
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- 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
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Description
(a)本発明者らは、まず、セラミックス焼結体の快削性を向上させるための主相について検討したところ、Al2O3を主相とするセラミックス、ZrO2を主相とするセラミックスの場合、硬度が高すぎるため、微細加工が困難であるのに対して、BNを主相とするセラミックス焼結体は、優れた快削性を有することが分かった。よって、セラミックスの主相はBNとするのがよい。
(b)しかし、BNは、体積抵抗率が1015Ω・cmオーダーと高すぎるため、検査工程で使用し続けた際に電荷が蓄積される。蓄積した電荷をゆっくりと放出することができないため、静電気放電を起こす。その結果、検査対象物に電流が瞬間的に流れてしまい、場合によっては検査対象物が破損するという問題がある。よって、セラミックス焼結体の体積抵抗率を106〜1014Ω・cmの範囲に制御して低帯電性を付与するためには、セラミックス焼結体の母材に103Ω・cm以下程度の粒子を分散させるのが有効である。この分散粒子としては、特に、SiC、WC、C、TiN、TiO2などがある。しかし、WC、C、TiN、TiO2の場合、SiCに比べて単体の体積抵抗率が低い。よって、BNを主相とするセラミックスに適量のSiCを分散させるのがよい。
(c)BNを主相とするセラミックスに適量のSiCを分散させただけでは、機械特性に劣る場合があるので、SiCとともに、ZrO2および/またはSi3N4を分散させるのが有効である。
(d)快削性と機械特性を両立させるには、緻密なセラミックス焼結体が望ましい。そのためには、加圧雰囲気下で焼成を行なう、ホットプレス焼成法を用いて作製するのがよい。
BN:20.0〜55.0%、
SiC:5.0〜40.0%、
ZrO2および/またはSi3N4:3.0〜60.0%で構成されるセラミックス。
上記(1)のセラミックス。
上記(1)または(2)のセラミックス。
上記(1)〜(3)のいずれかのセラミックス。
上記(1)〜(4)のいずれかのセラミックスを用いた板状の本体部と、
前記本体部に、前記プローブを挿通する複数の貫通孔および/またはスリットとを備える、
プローブ案内部品。
上記(5)のプローブ案内部品とを備える、
プローブカード。
パッケージ検査用ソケット。
本発明に係るセラミックスは、質量%で、BN:20.0〜55.0%、SiC:5.0〜40.0%、ZrO2および/またはSi3N4:3.0〜60.0%で構成される。以下、含有量についての「%」は「質量%」を意味する。
本発明に係るセラミックスは、超硬工具で加工できる程度の快削性材料であることが求められるので、セラミックスに優れた快削性を付与するために、必須の成分として、20.0%以上のBNを含有させる。しかし、BNの含有量が55.0%を超えると、材料強度が低下し、貫通孔の加工時に貫通孔間の壁が崩れるという問題が生じる。よって、BNの含有量は、20.0〜55.0%とする。下限は25.0%とするのが好ましく、30.0%とするのがより好ましい。上限は、50.0%とするのが好ましく、45.0%とするのがより好ましい。
SiCは、セラミックスの体積抵抗率を106〜1014Ω・cmの範囲に制御するために必須の成分である。よって、SiCの含有量を5.0%以上とする。ただし、SiCの含有量が40.0%を超えると、体積抵抗率が106Ω・cmを下回ってしまい低帯電性材料として好適な体積抵抗率ではなくなってしまうだけでなく、材料硬度が上昇しすぎて快削性が損なわれるという問題が生じる。よって、SiCの含有量は、5.0〜40.0%とする。下限は10.0%とするのが好ましく、15.0%とするのがより好ましい。上限は、35.0%とするのが好ましく、30.0%とするのがより好ましい。
ZrO2およびSi3N4は、いずれもセラミックスの機械的特性を向上させるために必須の成分である。よって、ZrO2および/またはSi3N4の含有量を3.0%以上とする。ただし、ZrO2および/またはSi3N4の含有量が60.0%を超えると、硬度が上昇しすぎて、快削性が劣化し、高精度に微細穴を形成することができなくなる。よって、ZrO2および/またはSi3N4の含有量は、3.0〜60.0%とする。下限は5.0%とするのが好ましく、10.0%とするのがより好ましい。上限は、55.0%とするのが好ましく、50.0%とするのがより好ましい。なお、ZrO2およびSi3N4の両方を含む場合には、合計の含有量を3.0〜60.0%とする。
本発明に係るセラミックスをプローブガイドに用いる場合には、各ICチップが搭載されるシリコンウエハの熱膨張係数と同程度であることが求められる。これは、検査時の温度が変化したときに、シリコンウエハの熱膨張に従ってICチップの位置が変動する。このとき、プローブガイドが、シリコンウエハと同程度の熱膨張係数を有しておれば、シリコンウエハの膨張、収縮に同調して移動するので、高精度な検査を維持することができる。この点、本発明に係るセラミックスが検査用ソケットに用いられる場合も同様である。よって、−50〜500℃における熱膨張係数は、1.0×10−6〜5.0×10−6/℃であることを基準とする。
本発明に係るセラミックスは、低帯電性を有することを特徴としており、体積抵抗率が106〜1014Ω・cmであることを基準とする。
本発明に係るセラミックスは、必要な機械的特性を得るために緻密であることを要する。気孔の残留が多いと十分な機械的特性が得られないことがあるので、吸水率が0.5%以下であることを基準とする。
本発明に係るセラミックスは、プローブガイドに使用したときには、検査時にプローブなどとの接触や荷重に耐えうるように、十分な機械的特性を有していることが求められる。この点、本発明に係るセラミックスが検査用ソケットに用いられる場合も同様である。このため、曲げ強度は、200MPa以上であることを基準とする。
快削性は、超硬マイクロドリルによる切削加工によって、直径50μmおよび直径100μmの貫通孔を60μmピッチで1000個(8個×125列)設けたときの加工精度を、画像測定機(例えば(株)ミツトヨ製クイックビジョン)で観察することにより評価する。このとき、加工精度が±3.0μm以下である場合に快削性が良好であると判断する。
以下、本発明に係るセラミックスの製造方法の例について説明する。
上記の試験材の体積抵抗率をJIS C2141に従って求めた。
上記試験材の−50〜500℃における熱膨張係数をJIS R1618に従って求めた。
上記の試験材の吸水率をJIS C2141に従って求めた。
上記の試験材の三点曲げ強度をJIS R1601に従って求めた。
快削性は、超硬マイクロドリルによる切削加工によって、直径50μmおよび直径100μmの貫通孔を60μmピッチで1000個(8個×125列)設けたときの加工精度(加工性精度が±3.0μm以下の場合を良好と判断する。)を目視観察により評価した。このとき、加工精度が±3.0μm以下である場合に快削性が良好であると判断し、「○」とし、加工精度が±3.0μm超の場合を「△」、ドリルが折れるなどして、穴開け加工そのものができない場合を「×」として、表1に記入した。
Claims (9)
- プローブカードのプローブを案内するプローブ案内部品であって、
セラミックスを用いた板状の本体部と、
前記本体部に、前記プローブを挿通する複数の貫通孔および/またはスリットとを備え、
前記セラミックスが、質量%で、
BN:20.0〜55.0%、
SiC:5.0〜40.0%、
ZrO2、または、ZrO2およびSi3N4:3.0〜60.0%を含み、
残部は、1.0〜15.0%の焼結助剤である、
プローブ案内部品。 - 前記セラミックスの−50〜500℃における熱膨張係数が1.0×10−6〜5.0×10−6/℃である、
請求項1に記載のプローブ案内部品。 - 前記セラミックスの体積抵抗率が、106〜1014Ω・cmである、
請求項1または2に記載のプローブ案内部品。 - 前記セラミックスの吸水率が、0.5%以下である、
請求項1から3までのいずれかに記載のプローブ案内部品。 - 複数のプローブと、
請求項1から4までのいずれかに記載のプローブ案内部品とを備える、
プローブカード。 - 質量%で、
BN:20.0〜55.0%、
SiC:5.0〜40.0%、
ZrO 2 、または、ZrO 2 およびSi 3 N 4 :3.0〜60.0%を含み、
残部は、1.0〜15.0%の焼結助剤である、セラミックスを用いた、
パッケージ検査用ソケット。 - 前記セラミックスの−50〜500℃における熱膨張係数が1.0×10 −6 〜5.0×10 −6 /℃である、
請求項6に記載のパッケージ検査用ソケット。 - 前記セラミックスの体積抵抗率が、10 6 〜10 14 Ω・cmである、
請求項6または7に記載のパッケージ検査用ソケット。 - 前記セラミックスの吸水率が、0.5%以下である、
請求項6から8までのいずれかに記載のパッケージ検査用ソケット。
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PCT/JP2018/039052 WO2019078364A1 (ja) | 2017-10-20 | 2018-10-19 | セラミックス、プローブ案内部品、プローブカードおよびパッケージ検査用ソケット |
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US20230312423A1 (en) * | 2020-04-10 | 2023-10-05 | Ferrotec Material Technologies Corporation | Ceramic, probe guiding member, probe card and socket for package inspection |
KR102453341B1 (ko) | 2020-06-15 | 2022-10-11 | 현대모비스 주식회사 | 차량용 배터리 마운트 구조 |
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JPS59152269A (ja) * | 1983-02-08 | 1984-08-30 | 九州耐火煉瓦株式会社 | 窒化珪素系複合耐火物 |
JPS60260197A (ja) * | 1984-06-07 | 1985-12-23 | 島田理化工業株式会社 | マイクロ波吸収体 |
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DE3824849A1 (de) * | 1988-07-21 | 1990-01-25 | Kempten Elektroschmelz Gmbh | Unter druck gesinterte, polykristalline mischwerkstoffe auf basis von hexagonalem bornitrid, oxiden und carbiden |
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KR100827265B1 (ko) | 2001-04-03 | 2008-05-07 | 가부시끼가이샤 구레하 | Ic 소켓 |
TWI276618B (en) | 2003-09-25 | 2007-03-21 | Sumitomo Metal Ind | Machinable ceramic |
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JP5036271B2 (ja) | 2006-10-16 | 2012-09-26 | 株式会社ニッカトー | ジルコニア質導電性焼結体 |
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