WO2023119897A1 - プローブヘッド - Google Patents
プローブヘッド Download PDFInfo
- Publication number
- WO2023119897A1 WO2023119897A1 PCT/JP2022/040970 JP2022040970W WO2023119897A1 WO 2023119897 A1 WO2023119897 A1 WO 2023119897A1 JP 2022040970 W JP2022040970 W JP 2022040970W WO 2023119897 A1 WO2023119897 A1 WO 2023119897A1
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- WO
- WIPO (PCT)
- Prior art keywords
- plunger
- hole
- tapered
- horizontal
- probe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- 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
-
- 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
-
- 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
- G01R1/07357—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 flexible bodies, e.g. buckling beams
-
- 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
- G01R31/26—Testing of individual semiconductor devices
-
- 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
Definitions
- the present invention relates to probe heads.
- a probe head includes a probe and an insulating support provided with a through hole through which the probe is inserted.
- the probe has a first plunger that contacts the first electrode of the test object, a second plunger that contacts the second electrode of the test substrate, and a spring.
- the second plunger is brought into contact with the second electrode of the inspection substrate, the first plunger is urged upward by the spring, and then the first plunger is brought into contact with the first electrode of the inspection object. are in contact.
- a gap is provided between the outer surface of the probe and the inner surface of the through hole in order to allow the probe to slide within the through hole of the insulating support.
- the first plunger may be urged upward while the tip of the first plunger is released. be.
- no external force is applied to the tip of the first plunger in the direction from the tip of the first plunger to the base end opposite to the tip of the first plunger.
- the first plunger may tilt and the positional accuracy of the tip of the first plunger may deteriorate.
- One example of the purpose of the present invention is to improve the positional accuracy of the tip of the probe. Other objects of the present invention will become clear from the description herein.
- One aspect of the present invention is a probe; an insulating support provided with tapered holes for supporting a plurality of portions of the probe;
- a probe head comprising:
- FIG. 6 is a diagram for explaining a state in which the tip of the first plunger is released and the first plunger is urged upward in the probe head according to the embodiment
- FIG. 10 is a diagram for explaining a state in which the tip of the first plunger is released and the first plunger is urged upward in the probe head according to the comparative example
- Box plot of results of repeated measurement of deviation ⁇ of the position of the tip of the first plunger from the design position according to the embodiment and repeated measurement of deviation ⁇ of the position of the tip of the first plunger from the design position according to the comparative example 1 is a boxplot of the results of , and a graph showing .
- FIG. 1 is a cross-sectional view of the probe head 10 according to the embodiment.
- the probe head 10 is positioned between the test object 20 and the test substrate 30 in the vertical direction.
- the inspection object 20 is positioned above the probe head 10 .
- the inspection board 30 is positioned below the probe head 10 .
- the inspection object 20 is, for example, an integrated circuit.
- the probe head 10 comprises a conductive probe 100 and an insulating support 200.
- a first electrode 22 provided on the lower surface of the inspection object 20 and a second electrode 32 provided on the upper surface of the inspection substrate 30 are electrically connected to each other via the probes 100 .
- the first electrodes 22 are bumps and the second electrodes 32 are pads.
- the probe 100 has a tube 110 , a spring 112 , a first plunger 120 and a second plunger 130 .
- First plunger 120 includes flange 122 , tapered portion 124 , first post 126 and first contact portion 128 .
- the second plunger 130 includes a second post 136 and a second contact portion 138 .
- the insulating support 200 has a first insulating support 210 and a second insulating support 220 .
- the tube 110 extends parallel to the vertical direction.
- a first plunger 120 is provided at the upper end of the tube 110 .
- a second plunger 130 is provided at the lower end of the tube 110 .
- a spring 112 is provided inside the tube 110 . The spring 112 urges the first plunger 120 and the second plunger 130 vertically away from each other. In another example different from this embodiment, the tube 110 may not be provided and the spring 112 may be provided between the first plunger 120 and the second plunger 130 in the vertical direction.
- the flange 122 is positioned above the upper end of the tube 110 .
- the horizontal diameter of the flange 122 is substantially equal to the horizontal outer diameter of the tube 110 .
- the tapered portion 124 is positioned above the upper end of the flange 122 .
- the horizontal diameter of the tapered portion 124 decreases from bottom to top.
- a first taper angle ⁇ shown in FIG. 1 indicates the taper angle of the taper portion 124 .
- the first taper angle ⁇ is the angle formed by both lateral lateral surfaces of the tapered portion 124 in the horizontal direction with respect to an imaginary line IL passing through the horizontal center of the tapered portion 124 in parallel with the extension direction of the first plunger 120 . Total.
- the first taper angle ⁇ is also an angle formed by tangent lines of both lateral lateral surfaces of the tapered portion 124 in the horizontal direction.
- the first column portion 126 extends vertically upward from the upper end of the tapered portion 124 .
- the horizontal diameter of the first columnar portion 126 is substantially equal to the horizontal diameter of the upper end of the tapered portion 124 . Also, the horizontal diameter of the first column portion 126 is smaller than the horizontal diameter of the flange 122 .
- the first contact portion 128 is provided at the tip of the first column portion 126 .
- the tip of the first columnar portion 126 is the upper end of the first columnar portion 126 .
- the first contact portion 128 contacts the first electrode 22 while the tube 110 and the first plunger 120 are integrally biased toward the inspection object 20 by the spring 112 . are doing.
- the second column portion 136 extends vertically.
- the horizontal diameter of the second column portion 136 is smaller than the horizontal inner diameter of the tube 110 .
- the second contact portion 138 is provided at the tip of the second column portion 136 .
- the tip of the second columnar portion 136 is the lower end of the second columnar portion 136 .
- the second contact portion 138 is in contact with the second electrode 32 while the second plunger 130 is biased toward the inspection board 30 by the spring 112 .
- the first insulating support 210 and the second insulating support 220 overlap vertically.
- the first insulating support 210 is positioned above the second insulating support 220 .
- the second insulating support 220 is positioned below the first insulating support 210 .
- the first insulating support 210 is, for example, a pin block, and the second insulating support 220 is, for example, a pin plate.
- a through hole 230 is provided in the insulating support 200 .
- the through hole 230 penetrates the insulating support 200 in the vertical direction.
- Through holes 230 include a first through hole 232 , a second through hole 234 , a third through hole 236 and a tapered hole 238 . At least a portion of the probe 100 is vertically inserted through the through hole 230 .
- the first through hole 232 tapers a portion of the first insulating support 210 located below the second through hole 234 and a portion of the second insulating support 220 located above the third through hole 236 . It extends vertically through hole 238 .
- the first through hole 232 connects the lower end of the first insulating support 210, the vertical central portion of the first insulating support 210, and the upper end of the second insulating support 220. It penetrates vertically through a tapered hole 238 .
- the horizontal diameter of the first through hole 232 is larger than both the horizontal outer diameter of the tube 110 and the horizontal diameter of the flange 122 . Therefore, gaps are provided between the outer surface of the tube 110 and the inner surface of the first through hole 232 and between the outer surface of the flange 122 and the inner surface of the first through hole 232 . Therefore, the tube 110 and the flange 122 are vertically slidable within the first through hole 232 .
- the second through hole 234 vertically penetrates the upper end of the first insulating support 210 .
- the lower end of the second through hole 234 vertically communicates with the upper end of the first through hole 232 via a tapered hole 238 .
- At least a portion of the first column portion 126 is vertically inserted through the second through hole 234 .
- the horizontal diameter of the second through hole 234 is less than the horizontal diameter of the first through hole 232 .
- the horizontal diameter of the second through-hole 234 is equal to or less than the horizontal outer diameter of the tube 110 and equal to or less than the horizontal diameter of the flange 122 . greater than the horizontal diameter value. Therefore, the tube 110 and the flange 122 are prevented from coming out upward through the second through hole 234 .
- a gap is provided between the outer surface of the first column portion 126 and the inner surface of the second through hole 234 . Therefore, the first column portion 126 is slidable in the vertical direction within the second through hole 234 . Also, the first column portion 126 is guided vertically by the second through hole 234 .
- the third through hole 236 vertically penetrates the lower end of the second insulating support 220 .
- the upper end of the third through-hole 236 communicates with the lower end of the first through-hole 232 in the vertical direction.
- At least a portion of the second column portion 136 is vertically inserted into the third through hole 236 .
- the horizontal diameter of the third through hole 236 is less than the horizontal diameter of the first through hole 232 .
- the horizontal diameter of the third through-hole 236 is equal to or less than the horizontal outer diameter of the tube 110 and larger than the horizontal diameter of the second column portion 136 . Therefore, the tube 110 is prevented from coming out downward through the third through hole 236 .
- a gap is provided between the outer side surface of the second column portion 136 and the inner side surface of the third through hole 236 . Therefore, the second column portion 136 is slidable in the vertical direction within the third through hole 236 . Also, the second column portion 136 is guided vertically by a third through hole 236 .
- the tapered hole 238 is positioned between the upper end of the first through hole 232 and the lower end of the second through hole 234 in the vertical direction.
- the depth direction of the tapered hole 238 is substantially parallel to the vertical direction.
- the horizontal diameter of the tapered hole 238 decreases from the upper end of the first through-hole 232 toward the lower end of the second through-hole 234 .
- the horizontal diameter of the lower end of the tapered hole 238 is substantially equal to the horizontal diameter of the upper end of the first through hole 232 .
- the horizontal diameter of the upper end of the tapered hole 238 is substantially equal to the horizontal diameter of the lower end of the second through hole 234 .
- a second taper angle ⁇ shown in FIG. 1 indicates the taper angle of the tapered hole 238 .
- the second taper angle ⁇ is the sum of the angles formed by both horizontal inner surfaces of the tapered hole 238 with respect to an imaginary line IL passing through the horizontal center of the through hole 230 in parallel with the extending direction of the through hole 230. is.
- the second taper angle ⁇ is also the angle formed by the tangent lines of the inner side surfaces on both sides of the tapered hole 238 in the horizontal direction.
- FIG. 2 is a diagram for explaining a state in which the tip of the first plunger 120 is released and the first plunger 120 is urged upward in the probe head 10 according to the embodiment.
- the upper end of the first contact portion 128 will be referred to as the tip of the first plunger 120 as necessary.
- the second contact portion 138 is in contact with the second electrode 32 while the tip of the first plunger 120 is open.
- the tip of the first plunger 120 is not in contact with an object such as the first electrode 22, and no downward external force is applied to the tip of the first plunger 120.
- the tube 110 and the first plunger 120 are integrally urged upward by the spring 112, and the first plunger 120 is pushed upward.
- the tapered holes 238 are offset from each other in the vertical direction of the first plunger 120. It supports a plurality of parts (at different positions with respect to the axial direction). In an embodiment, tapered bore 238 supports two portions, tapered section 124 and flange 122 .
- the first taper angle ⁇ is less than the second taper angle ⁇ .
- the horizontal diameter of the upper end of tapered portion 124 is less than the horizontal diameter of the upper end of tapered hole 238 .
- the horizontal diameter of the lower end of the tapered portion 124 is greater than or equal to the horizontal diameter of the upper end of the tapered hole 238 . Therefore, when the tip of the first plunger 120 is released and the first plunger 120 is urged upward, the outer surface of the tapered portion 124 is aligned with the upper end of the tapered hole 238 and the lower end of the second through hole 234 .
- the outer surface of the tapered portion 124 contacts the corner between the upper end of the tapered hole 238 and the lower end of the second through hole 234, so that the tapered hole 238 is The tapered portion 124 can be supported while the first plunger 120 is substantially parallel to the vertical direction.
- the outer surface of the tapered portion 124 is in contact with the corner between the upper end of the tapered hole 238 and the lower end of the second through hole 234 over the entire circumference of the tapered portion 124 when viewed in the vertical direction.
- the outer surface of the tapered portion 124 is located between the upper end of the tapered hole 238 and the second through hole 234 at only a portion of the entire circumference of the tapered portion 124 when viewed in the vertical direction. It may touch the corner between the bottom edge.
- the horizontal diameter of the upper end of the flange 122 is larger than the horizontal diameter of the lower end of the tapered portion 124 . That is, the flange 122 is a wide portion that is wider in the horizontal direction than the lower end of the tapered portion 124 . Therefore, a horizontal step is formed between the lower end of the tapered portion 124 and the upper end of the flange 122 . Therefore, the corner between the upper surface and the outer surface of the flange 122 is located outside the lower end of the outer surface of the tapered portion 124 with respect to the horizontal center of the first plunger 120 .
- the horizontal diameter of the upper end of the flange 122 is greater than or equal to the diameter of the upper end of the tapered hole 238 and less than the diameter of the lower end of the tapered hole 238 . Therefore, when the tip of the first plunger 120 is released and the first plunger 120 is urged upward, the corner between the upper surface and the outer surface of the flange 122 is aligned with the inner surface of the tapered hole 238. contact is possible. With the first plunger 120 substantially parallel to the vertical direction, the corner between the upper surface and the outer surface of the flange 122 contacts the inner surface of the tapered hole 238 , so that the tapered hole 238 allows the first plunger 120 to move vertically.
- the flange 122 can be supported in a substantially parallel direction.
- the upper surface of the flange 122 has an enlarged diameter region 122a.
- the enlarged diameter region 122a is located between the lower end of the entire circumference of the tapered portion 124 and the outer surface of the flange 122 around the entire circumference.
- the horizontal diameter of the flange 122 increases from the lower end of the tapered portion 124 to the outer surface of the flange 122.
- At least a portion of the expanded diameter region 122a is positioned below the upper end of the tapered hole 238 and above the lower end of the tapered hole 238 in the vertical direction. For example, in the cross section shown in FIG.
- At least a portion of the expanded diameter region 122a on both sides of the imaginary line IL is below the upper ends of the tapered holes 238 on both sides of the imaginary line IL and on the imaginary line IL in the vertical direction. On the other hand, it is positioned above the lower ends of the tapered holes 238 on both sides.
- the corner between the upper surface and the outer surface of the flange 122 is in contact with the inner surface of the tapered hole 238 over the entire circumference of the flange 122 when viewed in the vertical direction.
- the corners between the upper and outer surfaces on both horizontal sides of the flange 122 contact the inner surfaces of the tapered hole 238 on both horizontal sides of the tapered hole 238 . ing.
- the corner between the upper surface and the outer surface of the flange 122 is aligned with the inner surface of the tapered hole 238 at only a portion of the entire circumference of the flange 122 when viewed from the vertical direction. may come into contact with
- the angle between the upper surface of only one of the horizontal sides of the flange 122 and the outer surface of the tapered hole 238 is horizontal. It may contact the inner surface of tapered bore 238 on only one of the directional sides.
- the horizontal peripheral portion of the lower end of the tapered portion 124 on the upper surface of the flange 122 is substantially parallel to the horizontal direction.
- the enlarged diameter region 122a is substantially parallel to the horizontal direction. If the diameter-enlarged region 122a is inclined with respect to the horizontal direction, since the width of the diameter-enlarged region 122a in the horizontal direction is relatively narrow, the variation in the inclination of the diameter-enlarged region 122a may become relatively large. Further, when the expanded diameter region 122a is inclined with respect to the horizontal direction, the width of the expanded diameter region 122a in the horizontal direction is relatively narrow, and thus the measurement variation of the first plunger 120 may become relatively large.
- the shape of the horizontal peripheral portion of the lower end of the tapered portion 124 on the upper surface of the flange 122 is not limited to the example shown in FIG.
- a horizontal peripheral portion of the lower end of the tapered portion 124 on the upper surface of the flange 122 may be tapered, for example.
- the horizontal diameter of this tapered shape decreases from bottom to top.
- the taper angle of this tapered shape is larger than the first taper angle ⁇ .
- FIG. 3 is a diagram for explaining a state in which the tip of the first plunger 120K is released and the first plunger 120K is urged upward in the probe head 10K according to the comparative example.
- a probe head 10K according to the comparative example is the same as the probe head 10 according to the embodiment except for the following points.
- the horizontal diameter value of the upper end of the flange 122K according to the comparative example is substantially equal to the horizontal diameter value of the lower end of the tapered portion 124K. Therefore, no horizontal step is formed between the lower end of the tapered portion 124K and the upper end of the flange 122K.
- the tapered hole 238K supports only one vertical portion of the first plunger 120K. Specifically, in the comparative example, the first taper angle ⁇ K of the tapered portion 124K is less than the second taper angle ⁇ K of the tapered hole 238K.
- the horizontal diameter of the upper end of the tapered portion 124K is less than the horizontal diameter of the upper end of the tapered hole 238K.
- the horizontal diameter of the lower end of the tapered portion 124K is greater than or equal to the horizontal diameter of the upper end of the tapered hole 238K.
- the outer surface of the tapered portion 124K is the upper end of the tapered hole 238K and the lower end of the second through hole 234K. are accessible at the corners between The lower end of the second through hole 234K communicates vertically with the upper end of the first through hole 232K via a tapered hole 238K.
- a first columnar portion 126K extends vertically upward from the upper end of the tapered portion 124K.
- the outer surface of the tapered portion 124K is in contact with the corner between the upper end of the tapered hole 238K and the lower end of the second through hole 234K over the entire circumference of the tapered portion 124K when viewed in the vertical direction.
- the outer side surfaces on both horizontal sides of the tapered portion 124K are located between the upper end of the tapered hole 238K and the lower end of the second through hole 234K on both sides of the tapered hole 238K in the horizontal direction. touching the corners between.
- the outer surface of the tapered portion 124K is located between the upper end of the tapered hole 238K and the second through hole 234K at only a portion of the entire circumference of the tapered portion 124K when viewed from the vertical direction. It may touch the corner between the bottom edge.
- the first plunger 120K when the first plunger 120K is tilted with respect to the vertical direction, only one of the horizontal side outer surfaces of the tapered portion 124K is aligned with only one of the horizontal side surfaces of the tapered hole 238K. , it may contact the corner between the upper end of the tapered hole 238K and the lower end of the second through hole 234K.
- the two portions of the outer side surfaces on both horizontal sides of the tapered portion 124K are the upper end of the tapered hole 238K and the lower end of the second through hole 234K on both horizontal sides of the tapered hole 238K. are in contact with two parts of the corner between
- the outer surface of the tapered portion 124K extends over the entire circumference of the tapered portion 124K when viewed in the vertical direction, and is located between the upper end of the tapered hole 238K and the lower end of the second through hole 234K. touching the corners between. Therefore, the portion supported by the tapered hole 238K of the first plunger 120K according to the comparative example does not exist in the vertical direction, but only one portion exists in the vertical direction.
- the tapered hole 238K vertically extends the first plunger 120K as described above. It supports only one portion of 120K.
- the tapered hole 238 is vertically oriented as described above. directionally supports portions of the first plunger 120 . Therefore, in the embodiment, when the tip of the first plunger 120 is released and the first plunger 120 is urged upward, the first plunger 120 is moved vertically. You can make it harder to tilt. Therefore, in the embodiment, the positional accuracy of the tip of the first plunger 120 can be improved as compared with the comparative example.
- the outer surface of the tapered portion 124 can contact the corner between the upper end of the tapered hole 238 and the lower end of the second through hole 234 over the entire circumference of the tapered portion 124 when viewed in the vertical direction.
- the corner between the upper surface and the outer surface of the flange 122 can contact the inner surface of the tapered hole 238 over at least a portion of the circumference of the flange 122 when viewed in the vertical direction.
- tapered hole 238 may contact only one of the outer surface of tapered portion 124 and the corner between the upper surface and the outer surface of flange 122 , or may contact only one of the outer surface of tapered portion 124 and flange 122 . may contact both the corners between the upper and outer surfaces of the .
- the embodiment can improve the positional accuracy of the tip of the first plunger 120 as compared to the comparative example.
- the vertical position of the contact portion between the tapered hole 238 and the tapered portion 124 and the vertical position of the contact portion between the tapered hole 238 and the flange 122 are relatively close to each other in the vertical direction. , the positional accuracy of the tip of the first plunger 120 tends to be relatively good.
- the vertical position and the contact portion between the tapered hole 238 and the tapered portion 124 can be adjusted. , the vertical position of the contact portion between the tapered hole 238 and the flange 122 can be brought into close proximity in the vertical direction.
- each portion of the first plunger 120 and the dimensions of each portion of the through hole 230 are not particularly limited.
- the ratio of the first taper angle ⁇ to the second taper angle ⁇ may be, for example, 1/6 or more and 2/3 or less.
- the first taper angle ⁇ may be, for example, 20° or more and 40° or less.
- the second taper angle ⁇ may be, for example, 60° or more and 120° or less.
- FIG. 4 shows box plots of the results of repeated measurements of the deviation ⁇ of the tip position of the first plunger 120 from the design position according to the embodiment, and a comparison example of the position of the tip of the first plunger 120K from the design position.
- 4 is a graph showing a boxplot of the results of repeated measurements of the deviation ⁇ .
- the boxplot on the left side shows the tip of the first plunger 120K in a state in which the tip of the first plunger 120K is released and the first plunger 120K is urged upward in the probe head 10K according to the comparative example.
- 4 shows the results of repeated measurements of the deviation ⁇ from the design position of the position of .
- FIG. 4 shows box plots of the results of repeated measurements of the deviation ⁇ of the tip position of the first plunger 120 from the design position according to the embodiment, and a comparison example of the position of the tip of the first plunger 120K from the design position.
- the boxplot on the right side shows the tip of the first plunger 120 in a state in which the tip of the first plunger 120 is released and the first plunger 120 is urged upward in the probe head 10 according to the embodiment. 4 shows the results of repeated measurements of the deviation ⁇ from the design position of the position of .
- the horizontal line drawn from the bottom of each boxplot box to the lower end of the whiskers extending downward indicates the minimum value of the deviation ⁇ in repeated tests of each boxplot.
- the bottom of each boxplot box shows the first quartile of the deviation ⁇ in the replicates for each boxplot.
- the horizontal line drawn inside the box of each boxplot indicates the median value of the deviation ⁇ in repeated tests of each boxplot.
- the top of the box in each boxplot indicates the third quartile of the deviation ⁇ in repeated testing for each boxplot.
- the horizontal line drawn at the top of the whiskers extending upward from the top of each boxplot box indicates the maximum value of the deviation ⁇ in repeated testing of each boxplot.
- the “X” mark attached inside each boxplot indicates the average value of the deviation ⁇ in repeated tests of each boxplot.
- the vertical axis of the graph shown in FIG. 4 indicates the deviation ⁇ (unit: ⁇ m).
- ⁇ x is the horizontal deviation of the position of the tip of the first plunger 120 from the design position when the tip of the first plunger 120 is released and the first plunger 120 is urged upward.
- ⁇ y is the vertical deviation of the position of the tip of the first plunger 120 from the design position when the tip of the first plunger 120 is released and the first plunger 120 is urged upward. showing.
- the design position of the tip of the first plunger 120 is such that the first plunger 120 is parallel to the vertical direction when the tip of the first plunger 120 is released and the first plunger 120 is urged upward. This is the position of the tip of the first plunger 120 when The same applies to the deviation ⁇ in the comparative example.
- the first taper angle ⁇ was set to 30°.
- the second taper angle ⁇ was set to 90°.
- the first taper angle ⁇ K was set to 60°.
- the second taper angle ⁇ K was set to 90°.
- the tip of the first plunger 120 is released in advance while the second contact portion 138 is in contact with the second electrode 32 .
- a force for pushing the first plunger 120 downward is applied to the tip of the first plunger 120 .
- the force is then released.
- the first plunger 120 is urged upward by the spring 112 .
- the bias of the spring 112 causes the first plunger 120 to move upward.
- the horizontal deviation ⁇ x of the tip position of the first plunger 120 from the design position and the vertical deviation ⁇ y of the tip position of the first plunger 120 from the design position are measured. do.
- the deviation ⁇ is calculated based on the formula (1).
- the displacement ⁇ was calculated five times by the method described above for each of the 40 first plungers 120, and the average value of the five displacements ⁇ was calculated.
- the box-and-whisker plot of the embodiment shown in FIG. 4 shows the mean value of the deviation ⁇ for the 40 first plungers 120 .
- the third quartile of the deviation ⁇ in the embodiment is smaller than the median value of the deviation ⁇ in the comparative example.
- the result is that when the tapered bore 238 supports multiple portions of the first plunger 120, the tip of the first plunger 120 is more stable than when the tapered bore 238K supports only one portion of the first plunger 120K. This suggests that positional accuracy can be improved.
- the tapered hole 238 supports two portions of the first plunger 120 in the vertical direction when the first plunger 120 is biased upward with the distal end of the first plunger 120 open. are doing. Specifically, tapered hole 238 supports tapered portion 124 and flange 122 . However, the portion vertically supported by the tapered hole 238 of the first plunger 120 is not limited to the tapered portion 124 and the flange 122 . The tapered bore 238 may support more than two portions of the first plunger 120 vertically. The vertical positions of these three or more portions are vertically offset from each other.
- the corner between the upper surface and the outer surface of the flange 122 is inside the tapered hole 238 . in contact with the sides.
- a wide portion different from the flange 122 and the tapered portion 124 may be provided between the upper surface of the flange 122 and the lower surface of the tapered portion 124 .
- the horizontal diameter of the wide portion is larger than the horizontal diameter of the lower end of the tapered portion 124 .
- This wide portion may contact the inner surface of the tapered hole 238 in a state in which the tip of the first plunger 120 is released and the first plunger 120 is biased upward.
- the wide portion contacts the tapered hole 238, so that the tapered hole 238 can support the wide portion while the first plunger 120 is substantially parallel to the vertical direction.
- the tapered hole 238 located between the upper end of the first through hole 232 and the lower end of the second through hole 234 in the vertical direction is located above the tube 110 in a plurality of portions of the first plunger 120 .
- the support for the first plunger 120 in the embodiment is applicable to the support for the second plunger 130 as well. That is, the tapered hole may be positioned between the lower end of the first through hole 232 and the upper end of the third through hole 236 in the vertical direction. The horizontal diameter of this tapered hole decreases from the lower end of the first through-hole 232 toward the upper end of the third through-hole 236 .
- the tapered bore may support portions of the second plunger 130 vertically.
- Aspect 1 is a probe; an insulating support provided with tapered holes for supporting a plurality of portions of the probe;
- a probe head comprising: According to the aspect 1, compared with the case where the tapered hole supports only one part of the probe, it is possible to make the probe less inclined with respect to the depth direction of the tapered hole. Therefore, according to aspect 1, the positional accuracy of the tip of the probe can be improved as compared with the case where the tapered hole supports only one portion of the probe.
- Aspect 2 is A probe head according to aspect 1, wherein the plurality of portions of the probe includes a tapered portion having a taper angle less than a taper angle of the tapered hole.
- the tapered portion is in contact with the tapered hole, so that the tapered hole can support the tapered portion in a state in which the probe is substantially parallel to the depth direction of the tapered hole.
- Aspect 3 is 3.
- the wide portion contacts the tapered hole, so that the tapered hole can support the wide portion in a state in which the probe is substantially parallel to the depth direction of the tapered hole.
- the peripheral portion of the tapered portion of the wide portion is substantially parallel to the direction perpendicular to the extending direction of the probe.
- the processing of the probe becomes easier than when the peripheral portion of the tapered portion of the wide portion is inclined with respect to the direction perpendicular to the extending direction of the probe.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Measuring Leads Or Probes (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
Description
プローブと、
前記プローブの複数の部分を支持するテーパ孔が設けられた絶縁支持体と、
を備えるプローブヘッドである。
Δ={(Δx)2+(Δy)2}1/2 (1)
実施形態において、Δxは、第1プランジャ120の先端が開放されて第1プランジャ120が上方に向けて付勢された状態における第1プランジャ120の先端の位置の設計位置からの水平方向のずれを示している。実施形態において、Δyは、第1プランジャ120の先端が開放されて第1プランジャ120が上方に向けて付勢された状態における第1プランジャ120の先端の位置の設計位置からの鉛直方向のずれを示している。実施形態において、第1プランジャ120の先端の設計位置は、第1プランジャ120の先端が開放されて第1プランジャ120が上方に向けて付勢された状態において第1プランジャ120が鉛直方向に平行となる場合の第1プランジャ120の先端の位置である。比較例におけるずれΔについても同様である。
(態様1)
態様1は、
プローブと、
前記プローブの複数の部分を支持するテーパ孔が設けられた絶縁支持体と、
を備えるプローブヘッドである。
態様1によれば、テーパ孔がプローブの1つの部分のみを支持する場合と比較して、プローブをテーパ孔の深さ方向に対して傾きにくくすることができる。このため、態様1によれば、テーパ孔がプローブの1つの部分のみを支持する場合と比較して、プローブの先端の位置精度を良好にすることができる。
(態様2)
態様2は、
前記プローブの前記複数の部分が、前記テーパ孔のテーパ角度未満のテーパ角度を有するテーパ部を含む、態様1に記載のプローブヘッドである。
態様2によれば、テーパ部がテーパ孔に接触することで、テーパ孔は、プローブがテーパ孔の深さ方向に略平行となる状態でテーパ部を支持することができる。
(態様3)
態様3は、
前記プローブの前記複数の部分が、前記テーパ部より幅広な幅広部を含む、態様2に記載のプローブヘッドである。
態様3によれば、幅広部がテーパ孔に接触することで、テーパ孔は、プローブがテーパ孔の深さ方向に略平行となる状態で幅広部を支持することができる。
(態様4)
前記幅広部の前記テーパ部の周辺部分が、前記プローブの延伸方向に垂直な方向に略平行となっている、態様3に記載のプローブヘッド。
仮に、幅広部のテーパ部の周辺部分がプローブの延伸方向に垂直な方向に対して傾きを有する場合、幅広部の当該周辺部分の当該傾きのばらつきが比較的大きくなることがある。また、幅広部のテーパ部の周辺部分がプローブの延伸方向に垂直な方向に対して傾きを有する場合、プローブの測定のばらつきが比較的大きくなることがある。これに対して、態様4によれば、幅広部のテーパ部の周辺部分がプローブの延伸方向に垂直な方向に対して傾きを有する場合と比較して、当該傾きのばらつき及び当該測定のばらつきを小さくすることができる。したがって、態様4によれば、幅広部のテーパ部の周辺部分がプローブの延伸方向に垂直な方向に対して傾きを有する場合と比較して、プローブの加工が容易となる。
Claims (4)
- プローブと、
前記プローブの複数の部分を支持するテーパ孔が設けられた絶縁支持体と、
を備えるプローブヘッド。 - 前記プローブの前記複数の部分が、前記テーパ孔のテーパ角度未満のテーパ角度を有するテーパ部を含む、請求項1に記載のプローブヘッド。
- 前記プローブの前記複数の部分が、前記テーパ部より幅広な幅広部を含む、請求項2に記載のプローブヘッド。
- 前記幅広部の前記テーパ部の周辺部分が、前記プローブの延伸方向に垂直な方向に略平行となっている、請求項3に記載のプローブヘッド。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023569133A JPWO2023119897A1 (ja) | 2021-12-21 | 2022-11-02 | |
| US18/721,869 US20250060393A1 (en) | 2021-12-21 | 2022-11-02 | Probe head |
| CN202280081062.2A CN118382811A (zh) | 2021-12-21 | 2022-11-02 | 探头 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021206915 | 2021-12-21 | ||
| JP2021-206915 | 2021-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023119897A1 true WO2023119897A1 (ja) | 2023-06-29 |
Family
ID=86902033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/040970 Ceased WO2023119897A1 (ja) | 2021-12-21 | 2022-11-02 | プローブヘッド |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250060393A1 (ja) |
| JP (1) | JPWO2023119897A1 (ja) |
| CN (1) | CN118382811A (ja) |
| TW (1) | TW202326149A (ja) |
| WO (1) | WO2023119897A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7734517B2 (ja) * | 2021-06-24 | 2025-09-05 | 株式会社ヨコオ | ソケット |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300581A (ja) * | 2005-04-18 | 2006-11-02 | Yokowo Co Ltd | プローブの組付け構造 |
| US20100277191A1 (en) * | 2009-03-27 | 2010-11-04 | Essai, Inc. | Spring contact pin for an ic test socket and the like |
| WO2011162362A1 (ja) * | 2010-06-25 | 2011-12-29 | 日本発條株式会社 | コンタクトプローブおよびプローブユニット |
| WO2015122472A1 (ja) * | 2014-02-13 | 2015-08-20 | 日本発條株式会社 | プローブユニット |
| WO2020202735A1 (ja) * | 2019-03-29 | 2020-10-08 | 山一電機株式会社 | コンタクトプローブ及びこれを備えた検査用ソケット |
| JP2021092435A (ja) * | 2019-12-10 | 2021-06-17 | 山一電機株式会社 | 検査用ソケット |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7602112B2 (ja) * | 2020-11-17 | 2024-12-18 | 山一電機株式会社 | 検査用ソケット |
| JP7734517B2 (ja) * | 2021-06-24 | 2025-09-05 | 株式会社ヨコオ | ソケット |
| JP7605717B2 (ja) * | 2021-09-02 | 2024-12-24 | 山一電機株式会社 | プローブ及び検査用ソケット |
-
2022
- 2022-11-02 TW TW111141857A patent/TW202326149A/zh unknown
- 2022-11-02 US US18/721,869 patent/US20250060393A1/en active Pending
- 2022-11-02 WO PCT/JP2022/040970 patent/WO2023119897A1/ja not_active Ceased
- 2022-11-02 CN CN202280081062.2A patent/CN118382811A/zh active Pending
- 2022-11-02 JP JP2023569133A patent/JPWO2023119897A1/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300581A (ja) * | 2005-04-18 | 2006-11-02 | Yokowo Co Ltd | プローブの組付け構造 |
| US20100277191A1 (en) * | 2009-03-27 | 2010-11-04 | Essai, Inc. | Spring contact pin for an ic test socket and the like |
| WO2011162362A1 (ja) * | 2010-06-25 | 2011-12-29 | 日本発條株式会社 | コンタクトプローブおよびプローブユニット |
| WO2015122472A1 (ja) * | 2014-02-13 | 2015-08-20 | 日本発條株式会社 | プローブユニット |
| WO2020202735A1 (ja) * | 2019-03-29 | 2020-10-08 | 山一電機株式会社 | コンタクトプローブ及びこれを備えた検査用ソケット |
| JP2021092435A (ja) * | 2019-12-10 | 2021-06-17 | 山一電機株式会社 | 検査用ソケット |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118382811A (zh) | 2024-07-23 |
| TW202326149A (zh) | 2023-07-01 |
| US20250060393A1 (en) | 2025-02-20 |
| JPWO2023119897A1 (ja) | 2023-06-29 |
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