WO2021206148A1 - 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 - Google Patents

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 Download PDF

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Publication number
WO2021206148A1
WO2021206148A1 PCT/JP2021/014925 JP2021014925W WO2021206148A1 WO 2021206148 A1 WO2021206148 A1 WO 2021206148A1 JP 2021014925 W JP2021014925 W JP 2021014925W WO 2021206148 A1 WO2021206148 A1 WO 2021206148A1
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Prior art keywords
probe
ceramics
zro
ceramic
probe guide
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PCT/JP2021/014925
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English (en)
French (fr)
Japanese (ja)
Inventor
航 山岸
一政 森
俊一 衛藤
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Ferrotec Material Technologies Corp
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Ferrotec Material Technologies Corp
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Priority to US17/917,880 priority Critical patent/US20230312423A1/en
Priority to KR1020227039201A priority patent/KR102778666B1/ko
Priority to JP2022514122A priority patent/JP7373651B2/ja
Priority to EP21784340.8A priority patent/EP4129953B1/en
Publication of WO2021206148A1 publication Critical patent/WO2021206148A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Definitions

  • the present invention relates to ceramics, probe guide parts, probe cards and sockets for package inspection.
  • FIG. 1 shows a cross-sectional view illustrating the configuration of the probe card
  • FIG. 2 shows a top view illustrating the configuration of the probe guide.
  • the probe card 10 is an inspection jig including a needle-shaped probe 11 and a probe guide (probe guide component) 12 having a plurality of through holes 12a for conducting each probe 11.
  • the inspection of the IC chip 14 is performed by bringing a plurality of probes 11 into contact with the IC chip 14 formed on the silicon wafer 13.
  • Patent Document 1 exemplifies ceramics whose main raw material is a mixture of 25 to 60% by mass of silicon nitride and 40 to 75% by mass of boron nitride. Further, Patent Document 2 discloses an invention relating to free-cutting ceramics, wherein the main components are boron nitride (30 to 50% by mass) and zirconia (50 to 70% by mass).
  • the probe guides used in the inspection equipment have a coefficient of thermal expansion similar to that of the silicon wafer 13 and have mechanical strength (bending strength) that can withstand the probe load. It is required to have a large number of holes through which a microprobe passes with high accuracy.
  • the inspection efficiency of the IC chip inspection process depends on the number of probes that can come into contact with the IC chip at the same time. For this reason, in recent years, a probe card in which tens of thousands of minute probes are erected at a high density is being put into practical use by MEMS (Micro Electro Mechanical Systems).
  • MEMS Micro Electro Mechanical Systems
  • the probe guide 12 needs to be provided with a through hole 12a at a position corresponding to each probe 11 of the probe card 10.
  • the installation position and shape of the probe 11 of the probe card 10 vary depending on the specifications of the inspection device, and the installation position and shape of the through hole 12a also vary accordingly. For example, when the probe 11 has a pin shape, a circular hole is adopted as the through hole 12a, but it is necessary to form a through hole 12a having various shapes depending on the shape of the probe 11.
  • the inner diameter of the hole and the pitch of the holes also depend on the type and arrangement of the probe 11, but for example, a circular through hole having a diameter of 50 ⁇ m or a through hole of 50 ⁇ m square may be provided at a pitch of 60 ⁇ m (the wall thickness between the through holes is about 10 ⁇ m). be. It is necessary to provide tens of thousands of such small through holes. Therefore, it is required to be a material that can be easily processed with precision. In particular, if particles are generated when the through hole 12a of the probe guide 12 comes into contact with the probe 11, damage to the device, poor inspection, and an increase in the number of maintenances of the probe card 10 may occur. Therefore, it is also required that the roughness of the inner surface of the through hole 12a of the probe guide 12 is small, that is, the processed surface is smooth.
  • the number of probes is increased, the distance (pitch) between pads in contact with the probes is narrowed, and the position accuracy of the probes is required to be further improved.
  • the size of the probe is being reduced, and probes of various shapes are beginning to be used.
  • the material used for the probe guide it is necessary to reduce the thickness and form fine holes corresponding to the shape change of the probe for the purpose of improving the probe position accuracy.
  • the probe guide material is required to have extremely excellent mechanical properties.
  • the probe guide has been mainly explained above, but there are inspection sockets such as package inspection sockets as applications that require similar performance.
  • Patent Documents 1 and 2 cannot obtain sufficient mechanical strength (specifically, bending strength of 600 MPa or more).
  • the present inventors also, in Patent Document 3, in order to smooth the processed surface formed by laser processing (for example, the inner surface of the through hole of the probe guide), the high-strength ceramic Si 3 N 4 is used.
  • ZrO 2 and a predetermined oxide of expansion ceramic (MgO, Y 2 O 3, CeO 2, CaO, HfO 2, TiO 2, Al 2 O 3, SiO 2, MoO 3, CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and one or more selected from V 2 O 5 ), which has a coefficient of thermal expansion comparable to that of silicon wafers and has high strength.
  • Patent Document 3 examines a case where laser processing is performed on a ceramic material in which ZrO 2 is composited with Si 3 N 4 , and a processed surface (for example, the inner surface of a through hole of a probe guide) formed by laser processing is examined.
  • a processed surface for example, the inner surface of a through hole of a probe guide
  • MgO, Y 2 O 3 , CeO 2 , CaO, HfO 2 , TiO 2 , Al 2 O 3 , SiO 2 , MoO 3 , CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and V 2 O 5 and other oxides are contained in appropriate amounts.
  • machining speed no mention is made of machining speed.
  • Non-Patent Document 1 when drilling by irradiating a YAG laser, the ceramics of ZrO 2 alone are generally processed as compared with the ceramics of Si 3 N 4 alone. It is known to be easy (see Non-Patent Document 1). Non-Patent Document 1 explains that the reason is that ceramics having a higher thermal conductivity require a larger irradiation energy.
  • the present invention is capable of high-efficiency laser machining with a coefficient of thermal expansion comparable to that of silicon, excellent mechanical strength and workability (high-precision fine machining, excellent machining surface properties, and suppression of particle generation).
  • An object of the present invention is to provide a certain ceramic, a probe guide component using the ceramic, a probe card, and an inspection socket.
  • the present inventors have conducted intensive studies for the purpose of improving the processing speed of ceramics in which ZrO 2 and a predetermined oxide are compounded with Si 3 N 4.
  • the part where ZrO 2 is present is difficult to machine, and the part where ZrO 2 is not present is easy to machine. It was considered that No. 2 had a high laser reflectance and lowered the laser absorption rate. Therefore, the present inventors have made extensive studies on compounds that reduce the laser reflectance of the composite ceramics, and by allowing appropriate amounts of SiC and AlN to be present according to the amounts of Si 3 N 4 and ZrO 2, basically. It has been found that the machining speed of a laser can be improved without deteriorating the performance (coefficient of thermal expansion comparable to that of silicon, excellent mechanical strength and workability).
  • the coefficient of thermal expansion equivalent to that of silicon, excellent mechanical strength and workability (high-precision fine processing, excellent processing surface texture, suppression of particle generation), and highly efficient laser processing can be achieved. It is particularly useful as a probe guide component, probe card and inspection socket because possible ceramics can be obtained.
  • FIG. 1 is a cross-sectional view illustrating the configuration of a probe card.
  • FIG. 2 is a top view illustrating the configuration of the probe guide.
  • FIG. 3 is a photograph of the hole after microfabrication of Example 2 taken from above.
  • FIG. 4 is a schematic view of a state during laser machining.
  • the ceramics according to the present invention are Si 3 N 4 : 20.0 to 60.0%, ZrO 2 : 25.0 to 70.0%, and one or more types selected from SiC and AlN in mass%. : 2.0 to 17.0% (however, AlN is 10.0% less), MgO, Y 2 O 3, CeO 2, CaO, HfO 2, TiO 2, Al 2 O 3, SiO 2, MoO 3 , CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and V 2 O 5 or more: 5.0 to 15.0%, and from the following formula (1) It is a ceramic having a required Fn of 0.02 to 0.40.
  • “%" for the content means "mass%”.
  • Fn (SiC + 3AlN) / (Si 3 N 4 + ZrO 2) ⁇ (1)
  • Si 3 N 4 20.0 to 60.0%
  • Si 3 N 4 is effective for imparting high strength to ceramics, and needs to be contained in an amount of 20.0% or more in order to obtain a high bending strength of 700 MPa or more.
  • the content of Si 3 N 4 exceeds 60.0%, a coefficient of thermal expansion equivalent to that of a silicon wafer is obtained, that is, a coefficient of thermal expansion at -50 to 500 ° C. is 3.0 ⁇ 10 -6. It becomes difficult to exceed / ° C. Therefore, the content of Si 3 N 4 is set to 20.0 to 60.0%.
  • the lower limit is preferably 25.0%, more preferably 30.0%.
  • the upper limit is preferably 55.0%, more preferably 50.0%.
  • ZrO 2 25.0-70.0%
  • ZrO 2 is effective for imparting a high coefficient of thermal expansion to ceramics, and needs to be contained in an amount of 25.0% or more.
  • the content of ZrO 2 exceeds 70.0%, the coefficient of thermal expansion becomes too high, and a coefficient of thermal expansion comparable to that of a silicon wafer is obtained, that is, a coefficient of thermal expansion at ⁇ 50 to 500 ° C. is obtained. It becomes difficult to keep the temperature below 6.0 ⁇ 10 -6 / ° C. Therefore, the content of ZrO 2 is set to 25.0 to 70.0%.
  • the lower limit is preferably 30.0%, more preferably 35.0%.
  • the upper limit is preferably 65.0%, more preferably 60.0%.
  • the crystal structure of tetragonal or cubic As the ZrO 2, those having monoclinic, the crystal structure of tetragonal or cubic. Since monoclinic ZrO 2 is less strength than tetragonal or cubic ZrO 2, even if a crystal structure comprising a monoclinic proportion of monoclinic ZrO 2 to the total ZrO 2 is preferably as small as possible. If the ratio of monoclinic crystals is too large, it becomes difficult to achieve a bending strength of 600 MPa. Therefore, the ratio of monoclinic crystals to the entire ZrO 2 is preferably 10% or less, and 5% or less. More preferably, it may be 0%.
  • tetragonal ZrO 2 in which an oxide is dissolved in a solid solution of several% is preferably used.
  • this tetragonal ZrO 2 undergoes a phase transition to monoclinic crystals when exposed for a long time even at a low temperature (less than 200 ° C.), and the dimensions of the ceramics are changed during this phase transition.
  • This phase transition proceeds, for example, above 40 ° C and more prominently above 150 ° C. Therefore, when such ceramics are used for the probe guide component that guides the probe of the probe card, although it functions as the probe guide component at room temperature, a plurality of pieces that conduct the probe as the temperature range used increases.
  • the position of the through hole and / or slit of the probe may be misaligned, which may hinder the continuity of the probe. Therefore, it is preferable to use cubic ZrO 2 which does not undergo a phase transition at the operating temperature, that is, does not change in size.
  • the cubic ZrO 2 contains elements such as Y in an amount of about 3 mol%, and the content of ZrO 2 also includes the amount of these elements.
  • SiC and AlN 2.0 to 17.0% (however, AlN is 10.0% or less)
  • Fn (SiC + 3AlN) / (Si 3 N 4 + ZrO 2): 0.02 ⁇ 0.40
  • ZrO 2 is effective in imparting a high coefficient of thermal expansion to ceramics, but since both Si 3 N 4 and ZrO 2 have low thermal conductivity, the processing speed by the laser is reduced.
  • Pulse laser machining which is a non-thermal machining method, is used for precision machining of ceramics.
  • Pulse laser machining is a method of machining ceramics without melting them, but there is a heat-affected region that is heated by the influence of heat during machining at a site near the laser irradiation position.
  • the laser diameter becomes larger with respect to the diameter of the through hole, and the heat-affected region becomes relatively larger, so that problems such as shape defects and reattachment of the removed material are likely to occur. Therefore, in order to process ceramics with low thermal conductivity so that shape defects do not occur, laser output (W), scanning locus (laser movement, mileage), scanning speed, and repetition frequency (pulse laser irradiation). It is necessary to adjust the time interval) and so on. For example, if the repetition frequency is made small, the temperature rise of the ceramics can be suppressed, but on the other hand, the time required for processing becomes long. As a result, the processing speed of the laser is reduced.
  • SiC and AlN have extremely high thermal conductivity as compared with Si 3 N 4 and ZrO 2. Therefore, in ceramics in which ZrO 2 and a predetermined oxide are composited with Si 3 N 4 , if one or more of SiC and AlN are contained, it is easy to dissipate heat in the heat-affected region generated during laser processing, which is basic. The processing speed of the laser can be improved without deteriorating the performance (coefficient of thermal expansion comparable to silicon, excellent mechanical strength and workability). Therefore, 2.0% or more of one or more selected from SiC and AlN is contained. In order to obtain the above effect, it is necessary to (SiC + 3AlN) / (Si 3 N 4 + ZrO 2) of 0.02 or more.
  • the content of one or more types selected from SiC and AlN is set to 17.0% or less (however, AlN is 10.0% or less). Further, the (SiC + 3AlN) / (Si 3 N 4 + ZrO 2) to 0.40 or less.
  • SiC and AlN have lower bending strength than Si 3 N 4 and ZrO 2 , the bending of the sintered body is particularly high when these compounds are present in the sintered body as coarse particles. May reduce strength. Therefore, it is desirable that these compounds are uniformly dispersed in a size of 5.0 um or less in average particle size. It is more desirable that the average particle size is 2.0 um or less and the particles are uniformly dispersed.
  • the ceramics according to the present invention are used for various purposes, it is necessary to perform fine processing. For example, it is necessary to form a plurality of through holes and / or slits for use as a probe guide component.
  • the ceramics according to the present invention are high-hardness materials containing Si 3 N 4 and ZrO 2 as main components, it is difficult to perform this microfabrication by mechanical processing.
  • the processed surface (for example, the inner surface of the through hole of the probe guide) becomes rough, and when the member subjected to such processing is used, particles are generated, which causes damage to various devices and inspection failure. For this reason, it is preferable to perform fine processing on the ceramics by laser processing, but it is difficult to smooth the processed surface (for example, the inner surface of the through hole of the probe guide) even by laser processing, so that it is used. It is difficult to completely prevent the generation of particles of time.
  • an appropriate amount of oxide is contained in order to smooth the processed surface formed by laser processing (for example, the inner surface of the through hole of the probe guide). That is, MgO, Y 2 O 3 , CeO 2 , CaO, HfO 2 , TiO 2 , Al 2 O 3 , SiO 2 , MoO 3 , CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and V. It is necessary to contain 5.0% or more of one or more kinds selected from 2 O 5. On the other hand, if the content of these oxides is excessive, the bending strength is lowered. Therefore, the content of one or more of these oxides is set to 15.0% or less.
  • the content of one or more types selected from 2 O 5 is 5.0 to 15.0%.
  • the lower limit is preferably 7.0%, more preferably 9.0%.
  • the upper limit is preferably 13.0%, more preferably 11.0%.
  • MgO, Y 2 O 3, CeO 2, CaO and HfO 2 acts as a sintering aid, addition, to stabilize the crystal structure of ZrO 2 as cubic It is valid.
  • TiO 2 , Al 2 O 3 , SiO 2 , MoO 3 , CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and V 2 O 5 are sintering aids. Also works as.
  • the content (mass%) of each component can be measured by ICP emission spectroscopic analysis.
  • the balance other than the components listed above is not particularly limited, but is preferably as small as possible, and the content of the balance is preferably 10.0% or less, more preferably 5.0% or less, and may be 0%. .. Examples of the remainder include BN and the like. In particular, since BN may cause a decrease in strength, its content is preferably as small as possible, and its content is preferably 3.0% or less, more preferably 1.5% or less.
  • the coefficient of thermal expansion at -50 to 500 ° C is based on 3.0 to 6.0 ⁇ 10 -6 / ° C.
  • Bending strength 600 MPa or more
  • the ceramics according to the present invention are required to have sufficient mechanical properties so as to withstand contact with a probe and a load during inspection.
  • higher bending strength than before is required.
  • the bending strength is based on 600 MPa or more, and more preferably 700 MPa or more.
  • Microfabrication is evaluated by the processing accuracy when nine 50 ⁇ m square or 30 ⁇ m square through holes are formed in a ceramic material having a thickness of 0.3 mm by pulse laser processing. Specifically, an image taken with an optical microscope (for example, VHX7000 manufactured by KEYENCE CORPORATION) is evaluated by observing it with an image measuring machine (for example, Quick Vision manufactured by Mitutoyo Co., Ltd.). Good microfabrication means that the hole shape is observed from the exit side of the laser, and the workability accuracy is ⁇ 2 ⁇ m or less (for a 50 ⁇ m square through hole, the length of one side is 48 to 52 ⁇ m, and for a 30 ⁇ m square through hole. It means that the length of one piece is 28 to 32 ⁇ m), and the R of the corner R of each square hole measured in a circle from any three points is 5 um or less.
  • an optical microscope for example, VHX7000 manufactured by KEYENCE CORPORATION
  • an image measuring machine for example, Quick Vision manufactured by Mit
  • the processing speed is the ceramics to be evaluated by measuring the time from the start to the end of the formation of the through holes when the nine through holes are processed at the maximum speed that can maintain the good fine workability.
  • the ratio (t 1 / t 0 ) of the processing time (t 1 ) of the above to the processing time (t 0 ) of the ceramic having the standard composition is obtained and evaluated.
  • a good ratio is when the ratio (t 1 / t 0 ) is 1.05 or more. When it is 1.10 or more, and further, 1.15 or more, it is evaluated that the processing speed is further excellent.
  • the reference composition means ceramics having a composition excluding SiC and AlN under the condition that the ratio of Si 3 N 4 and ZrO 2 is constant from the ceramics to be evaluated.
  • the ceramics of the present invention have a through hole or slit having an inscribed circle diameter of 100 ⁇ m or less, more preferably a through hole or slit having an inscribed circle diameter of 50 ⁇ m or less, and even more preferably an inner circle. It is useful for manufacturing probe guide parts having through holes or slits having a tangent circle diameter of 30 ⁇ m or less.
  • the diameter of the inscribed circle of the slit is synonymous with the width of the slit. Further, the thicker the ceramic, the longer it takes to form the through hole, and the larger the heat-affected region becomes. Therefore, the ceramic of the present invention manufactures a probe guide component in which the ratio of the diameter of the inscribed circle to the depth of the through hole (depth / diameter of the inscribed circle) is 6.0 or more, particularly 10.0 or more. Useful to do.
  • the roughness of the machined surface is determined by laser confocal microscopy (Keyence VK) on the inner surface of the machined holes when nine 50 ⁇ m square through holes are formed in a ceramic material with a thickness of 0.3 mm by pulse laser processing.
  • Keyence VK laser confocal microscopy
  • any 5 visual fields are measured with a length of 100 ⁇ m or more, tilt correction is performed to calculate Ra, and the average value is evaluated.
  • Ra is preferably 0.25 ⁇ m or less.
  • Presence or absence of cracks after heat treatment at 150 ° C. To determine the presence or absence of cracks after heat treatment at 150 ° C., a ceramic material having a thickness of 0.3 mm is heated from room temperature to 150 ° C. at 5 ° C./min and held at 150 ° C. for 100 hours. After allowing the ceramics to cool naturally at room temperature and allowing the ceramics to stand for another 5 hours after reaching room temperature, a digital microscope (VHX-6000 manufactured by Keyence) is used to photograph 5 or more fields at an observation magnification of 200 times. Evaluate the presence or absence of cracks from the image.
  • oxide powders selected from 4 which becomes MoO 3 after sintering
  • CrO, CoO, ZnO, Ga 2 O 3 , Ta 2 O 5 , NiO and V 2 O 5 with a ball mill or the like Mix by a known method. That is, in a container, each powder is mixed with a solvent and a resin ball made of ceramics or an iron core to form a slurry. At this time, water or alcohol can be used as the solvent. Furthermore, additives such as a dispersant and a binder may be used if necessary.
  • Granulate the obtained slurry by a known method such as spray drying or a vacuum evaporator. That is, it is spray-dried with a spray dryer to granulate, or dried with a reduced pressure evaporator to be powdered.
  • the obtained powder is sintered under a high temperature and high pressure by a known method such as hot pressing or HIP (hot isostatic pressing method) to obtain a ceramic sintered body.
  • a known method such as hot pressing or HIP (hot isostatic pressing method) to obtain a ceramic sintered body.
  • hot pressing firing may be performed in a nitrogen atmosphere.
  • the firing temperature is preferably in the range of 1300 to 1800 ° C. If the temperature is too low, sintering will be insufficient, and if the temperature is too high, problems such as elution of oxide components will occur.
  • the appropriate pressing pressure is in the range of 10 to 50 MPa.
  • the duration of pressing is usually about 1 to 4 hours depending on the temperature and dimensions.
  • firing conditions such as temperature and pressing force may be appropriately set.
  • a known firing method such as a normal pressure firing method or an atmospheric pressure firing method may be adopted.
  • One or more oxide powders selected from CeO 2 , TiO 2 and H 2 MoO 4 (which becomes MoO 3 after sintering) are mixed with water, dispersant, resin and ceramic balls.
  • the obtained slurry was spray-dried with a spray dryer to form granules.
  • the obtained granules are filled in a graphite die (mold) and hot-press fired at 1700 ° C. for 2 hours while applying a pressure of 30 MPa in a nitrogen atmosphere to obtain a test material having a length of 150 ⁇ width of 150 ⁇ thickness of 30 mm. Obtained.
  • test piece was collected from the obtained test material and various tests were performed.
  • the three-point bending strength of the above test material was determined according to JIS R1601. Bending strength is based on 600 MPa or more.
  • Young's modulus of the above test material was determined according to JIS R1602. Young's modulus is based on 240 GPa or more.
  • the microfabrication is evaluated by the processing accuracy when nine 50 ⁇ m square and 30 ⁇ m square through holes are formed in a ceramic material having a thickness of 0.3 mm by pulse laser processing. Specifically, an image taken with an optical microscope (for example, VHX7000 manufactured by KEYENCE CORPORATION) is evaluated by observing it with an image measuring machine (for example, Quick Vision manufactured by Mitutoyo Co., Ltd.). A pulse laser having a wavelength of 1064 nm was used for processing a 50 ⁇ m square through hole, and a pulse laser having a wavelength of 532 nm was used for processing a 30 ⁇ m square through hole.
  • an optical microscope for example, VHX7000 manufactured by KEYENCE CORPORATION
  • an image measuring machine for example, Quick Vision manufactured by Mitutoyo Co., Ltd.
  • FIG. 4 shows a schematic view of the state during laser machining. As shown in FIG. 4, in ceramics, the side irradiated with the laser beam is the laser irradiation side, and the side opposite to the laser irradiation side is the laser exit side.
  • the processing speed is the ratio of the processing time (t 1 ) of the ceramic to be evaluated and the processing time (t 0 ) of the ceramic having the standard composition by measuring the time from the start to the end of the formation of the above nine through holes. (T 1 / t 0 ) is obtained and evaluated.
  • a good ratio is when the ratio (t 1 / t 0 ) is 1.05 or more. When it is 1.10 or more, and further, 1.15 or more, it is evaluated that the processing speed is further good.
  • the reference composition means ceramics having a composition excluding SiC and AlN under the condition that the ratio of Si 3 N 4 and ZrO 2 is constant from the ceramics to be evaluated.
  • the roughness of the machined surface was determined by using a laser confocal microscope (Keyence VK-X150) to measure the inner surface of the machined holes when nine 50 ⁇ m square through holes were formed in a ceramic material with a thickness of 0.3 mm by pulse laser machining. A length of 100 ⁇ m or more was measured in any of the five visual fields, tilt correction was performed to calculate Ra, and the average value was evaluated. Ra was good at 0.25 ⁇ m or less.
  • the region including the thickness center portion of the inner surface of the hole is observed for the cross section parallel to the thickness direction of the ceramic material.
  • ⁇ Presence or absence of cracks after heat treatment at 150 ° C> To determine the presence or absence of cracks after heat treatment at 150 ° C., a ceramic material having a thickness of 0.3 mm was heated from room temperature to 150 ° C. at 5 ° C./min, held at 150 ° C. for 100 hours, and then naturally allowed to cool at room temperature. After the ceramics have reached room temperature and allowed to stand for another 5 hours, a digital microscope (VHX-6000 manufactured by Keyence) is used to photograph 5 or more fields of view at an observation magnification of 200 times, and the presence or absence of cracks is evaluated from the photographed images. do. If there is no crack, mark ⁇ , and if crack occurs, mark ⁇ .
  • Examples 1 to 6 satisfying all the conditions of the present invention various performances were excellent.
  • Examples 1 to 6 have a processing speed ratio of 1.05 or more as compared with their respective reference compositions (compositions in which the ratios of Si 3 N 4 and ZrO 2 are the same), which is excellent in the present invention. The effect was confirmed.
  • Comparative Examples 1 to 12 the amounts of SiC and AlN were out of the range specified in the present invention and did not satisfy the desired performance.
  • Examples 7 to 11 of the present invention are ceramic sintered bodies using SiC powder having various particle sizes and one or more of AlN as raw material powders. As shown in Examples 7 to 11 of the present invention, it can be seen that the smaller the average particle size of SiC and AlN in the ceramic sintered body, the higher the bending strength tends to be.
  • the coefficient of thermal expansion equivalent to that of silicon, excellent mechanical strength and workability (high-precision fine processing, excellent processing surface texture, suppression of particle generation), and highly efficient laser processing can be achieved. It is particularly useful as a probe guide component, probe card and inspection socket because possible ceramics can be obtained.

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PCT/JP2021/014925 2020-04-10 2021-04-08 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 Ceased WO2021206148A1 (ja)

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US17/917,880 US20230312423A1 (en) 2020-04-10 2021-04-08 Ceramic, probe guiding member, probe card and socket for package inspection
KR1020227039201A KR102778666B1 (ko) 2020-04-10 2021-04-08 세라믹스, 프로브 안내 부품, 프로브 카드 및 패키지 검사용 소켓
JP2022514122A JP7373651B2 (ja) 2020-04-10 2021-04-08 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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