WO2010008030A1 - ピン先端部のクリーニング機構を有する基板検査装置 - Google Patents
ピン先端部のクリーニング機構を有する基板検査装置 Download PDFInfo
- Publication number
- WO2010008030A1 WO2010008030A1 PCT/JP2009/062835 JP2009062835W WO2010008030A1 WO 2010008030 A1 WO2010008030 A1 WO 2010008030A1 JP 2009062835 W JP2009062835 W JP 2009062835W WO 2010008030 A1 WO2010008030 A1 WO 2010008030A1
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- Prior art keywords
- substrate
- inspection
- inspected
- cleaning
- brush
- Prior art date
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- 238000004140 cleaning Methods 0.000 title claims abstract description 245
- 230000007246 mechanism Effects 0.000 title description 69
- 238000007689 inspection Methods 0.000 claims abstract description 290
- 239000000758 substrate Substances 0.000 claims abstract description 249
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- 230000008569 process Effects 0.000 abstract description 5
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- 238000005259 measurement Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
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- 238000011144 upstream manufacturing Methods 0.000 description 3
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Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/002—Maintenance of line connectors, e.g. cleaning
Definitions
- the present invention relates to a board inspection apparatus for measuring electrical characteristics of wiring by bringing a pin into contact with an inspection point of wiring (or a conductor pattern) of a board to be inspected, and in particular, affects measurement of electrical characteristics.
- the present invention relates to a substrate inspection apparatus having a pin tip cleaning mechanism that can clean the tip of the pin without any problem.
- the board inspection apparatus brings an inspection jig in which a plurality of pins (also referred to as “probes”) are brought close to a plurality of inspection points of the wiring of the board to be inspected, and electrical characteristics of the wiring (for example, Measure the electrical resistance value.
- substrate to be inspected used in the present application document is a plurality of wirings such as a package substrate for a semiconductor package, a film carrier, a printed wiring substrate, a flexible substrate, a multilayer wiring substrate, an electrode plate for a liquid crystal display or a plasma display. And all the substrates that measure electrical characteristics by contacting pins during substrate inspection.
- the inspection point on the wiring may be formed of a relatively soft metal, for example, solder, solder balls, solder paste, etc., and such a relatively soft when continuously inspecting a plurality of substrates.
- solder residue or the like may adhere to the pin. Pins with solder residue or the like attached may not be able to measure the exact electrical characteristics of the wiring.
- the inspection tool was removed from the substrate inspection device, and the tip of the pin was cleaned manually using a glass fiber brush under the microscope.
- the glass fiber brush was in contact with care not to bend.
- the tip of the pin was cleaned by removing the inspection jig from the board inspection device and manually removing solder residue from the tip of the pin with a glass fiber brush under a microscope. This cleaning operation is performed a plurality of times while contacting the glass fiber brush so as not to bend the tip of the pin.
- the peripheral portion is cleaned with a nylon brush. Such a cleaning operation is repeated 5 to 10 times. At this time, a dust absorber is used to remove solder residue, dust and the like.
- Patent Document 1 describes a semiconductor wafer for electrical inspection of individual elements on a stage. The structure by which the cleaning apparatus is arrange
- Patent Document 2 discloses a configuration in which a semiconductor package is transported to a contact pin of a test apparatus and contacted with it for testing a semiconductor package. In this configuration, the contact pin is cleaned by adsorbing a cleaning member to the contact pin instead of the semiconductor package. An adhesive member is used as the cleaning member.
- An object of the present invention is to provide a substrate inspection apparatus having a cleaning mechanism capable of cleaning the tip of a pin without interrupting the flow of substrate inspection for continuously inspecting a plurality of substrates.
- An object of the present invention is to provide a substrate inspection apparatus having a brush arranged so that the pin tip can be cleaned without interrupting the flow of substrate inspection performed continuously.
- An object of the present invention is to provide a substrate inspection apparatus having a brush that does not require cleaning while continuously performing substrate inspection.
- An object of the present invention is to provide a substrate inspection apparatus having a brush having a characteristic capable of exhibiting a cleaning effect for a long time.
- an object of the present invention is to provide a substrate inspection apparatus having a cleaning mechanism that does not vary in the achievement level of cleaning of the tip of the pin.
- a substrate inspection apparatus includes a conveyance path from a carry-in section to a carry-out section, a substrate holding section to be inspected provided at a predetermined interval on the conveyance path, and the inspection substrate holding section.
- Inspection means for sequentially inspecting inspection substrates provided in the intermediate portion of the conveyance path and held by the inspection substrate holding portion of the conveyance means, the conveyance means comprising a movement means that moves along the conveyance path
- An inspection unit that includes an inspection jig and that measures the electrical characteristics of the wiring by bringing a plurality of pins provided on the inspection jig into contact with the inspection points of the wiring on the substrate to be inspected;
- a cleaning unit provided between any adjacent inspected substrate holders provided at a predetermined interval on the transport path, when moved by the moving unit of the transport unit and passing through the inspection unit
- the plurality of pins of the cleaner Characterized in that it comprises a cleaning means for performing grayed.
- each distance between the cleaning means provided between the arbitrary adjacent inspection target substrate holding portions and the two adjacent inspection target substrate holding portions is the arbitrary adjacent inspection target substrate. It can be made smaller than the distance between the holding parts.
- the cleaning unit includes a brush, and the brush has a flow of fibers along a moving direction moved by the moving unit, and is inclined in a direction opposite to the moving direction. May be held.
- the brush may be held inclined at an arbitrary angle between about 30 degrees and 50 degrees with respect to a horizontal plane.
- the brush can be made of glass fiber.
- the transport unit includes a rotary table device having a circular table and a rotation driving unit that rotationally drives the circular table, and the substrate holder to be inspected has a circumference on the circular table.
- the cleaning means is at least between any two adjacent substrate holding portions to be inspected of the substrate holding portion to be inspected provided on the circular table. One may be provided.
- the transfer means moves along the two transfer paths, the inspected substrate holder disposed in each of the two transfer paths, and the inspected substrate holder along the transfer paths.
- a part of the two transport paths is common, the inspection unit is disposed at an arbitrary position on the common path, and at least one of the two transport paths.
- One cleaning means is provided, and while the two inspected substrate holders pass through the inspection unit on the common path at a predetermined time interval, The cleaning means may pass through the common path.
- the cleaning means starts moving from one position away from the pin tip of the inspection jig toward one side, cleans while contacting the pin tip, and away from the pin tip. It may be moved to stop until it is moved to the original position in the opposite direction to clean the tip of the pin, and this reciprocation may be repeated.
- the transport unit is formed of a rotary table having a rotary drive shaft and a circular table, and the cleaning unit is interposed between a plurality of substrates to be inspected that are held circumferentially on the circular table.
- the cleaning means can move to the inspection unit by following the same transport path as the substrate to be inspected by the rotation of the rotary drive shaft.
- the plurality of pins are cleaned by bringing the plurality of pins provided on the inspection jig into contact with the inspection points of the wiring on the substrate to be inspected, thereby improving the electrical characteristics of the wiring.
- the plurality of substrates to be inspected are sequentially transported to an inspection unit to be measured at a predetermined timing, while a cleaning means having a brush is passed through the inspection unit at a timing different from the predetermined timing to pass the plurality of pins. It is characterized by cleaning.
- the tip of the pin can be cleaned without interrupting the flow of substrate inspection for continuously inspecting a plurality of substrates.
- the tip of the pin can be cleaned without requiring a separate drive mechanism and time for performing substrate inspection.
- the present invention it is possible to provide a brush arranged so that the tip of the pin can be cleaned without interrupting the flow of substrate inspection for continuously inspecting a plurality of substrates.
- the pin tip cleaning component is installed on the transport path, and the tip of the pin is cleaned using the transport movement direction in which this component is moved, so that the pin can be cleaned efficiently.
- FIG. 1 is a front view showing a schematic configuration of a substrate inspection apparatus including a rotary table device according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view of the rotary table device shown in FIG. 1 as viewed from above.
- 3A is an enlarged schematic view of a part of the brush portion of the rotary table cleaning mechanism shown in FIG.
- FIG. 3B is a simplified conceptual diagram for explaining a state in which the rotary table cleaning mechanism shown in FIG. 2 passes through the inspection unit as the circular table rotates.
- 4A is a perspective view of the cleaning mechanism shown in FIG. 3B.
- FIG. 4B is a side view of the cleaning mechanism shown in FIG. 3B.
- FIG. 4C is a perspective view showing a configuration in which the cleaning mechanism shown in FIG.
- FIG. 4D is a perspective view showing a state in which the ring-shaped portion to which the cleaning mechanism of another embodiment is attached is attached to the back surface side of the portion having the opening of the circular table.
- FIG. 5 is a perspective view of a cleaning mechanism according to another embodiment.
- FIG. 6 is a plan view schematically showing the configuration of a shuttle type substrate inspection apparatus according to another embodiment of the present invention.
- FIG. 7 is an enlarged plan view of a turntable device according to another embodiment of the turntable device of FIG. 1 as viewed from above.
- FIG. 8 is an enlarged plan view of a part of the rotary table device of FIG. 7 having a pin tip cleaning component according to another embodiment.
- FIGS. 9A and 9B are simplified front views for explaining the functions of the inspection jig and the pin tip portion cleaning component.
- FIG. 10 is a plan view for explaining a substrate holding portion used in a shuttle type substrate inspection apparatus according to another embodiment of the present invention.
- FIG. 1 is a front view showing a schematic configuration of a substrate inspection apparatus 10 according to an embodiment of the present invention.
- the substrate inspection apparatus 10 includes a rotary table device 22 (also referred to as “index table”) for holding a substrate to be inspected.
- the rotary table 22 includes a circular table (or table board) 22t and a rotary drive shaft 22s, and rotates in a direction indicated by an arrow, for example.
- the board inspection apparatus 10 also includes an upper inspection jig 28u, a lower inspection jig 28d, a control device 11, and an alignment camera 29.
- the alignment camera 29 includes upper and lower cameras 29u and 29d, and confirms whether or not the inspected substrate 42 is held at a predetermined position of the turntable device 22. Information from the alignment camera 29 is processed by the image processing unit 16 and sent to the control unit 14.
- the inspected substrate 42 is hatched, but this does not mean a cross section, but merely to make it easy to distinguish from other elements.
- a plurality of pins (also referred to as “probes”) 32 are attached to the upper inspection jig 28 u and the lower inspection jig 28 d of the inspection jig 28.
- the upper inspection jig 28u and the lower inspection jig 28d are raised and lowered by the upper jig driving unit 26u and the lower jig driving unit 26d, respectively.
- the control device 11 includes an operation panel 12, a control unit 14, an image processing unit 16, a tester controller 18, and a scanner 20.
- the control unit 14 includes a CPU, a ROM, a RAM, and the like (not shown), and a board inspection program is stored in the ROM. At the time of substrate inspection, the substrate inspection program is read from the ROM to the RAM and executed in accordance with an instruction from the operation panel 12.
- the tester controller 18 When the tester controller 18 receives an inspection start command from the control unit 14, the tester controller 18 controls the scanner 20 to inspect the substrate to be inspected. Although not shown, the scanner 20 determines whether or not the power supply for supplying current to the wiring of the board to be inspected, the switch group for switching and connecting the power supply and the signal line connected to each pin 32, and the quality of the wiring. And a determination unit.
- the upper jig driving unit 26u and the lower jig driving unit 26d are driven to lower and raise the upper inspection jig 28u and the lower inspection jig 28d, respectively.
- the tips of the plurality of pins are brought into contact with predetermined inspection points on the wiring of the substrate to be inspected.
- the tester controller 18 sequentially connects the wiring of the board to be inspected to the power source in accordance with a preset switch group switching program, measures the resistance value of each wiring, and the determination unit applies the corresponding resistance value from the measured resistance value. Determine the quality of the wiring.
- the determination results are sequentially sent from the tester controller 18 to the control unit 14, and when the inspection is completed, the control unit 14 outputs a final inspection result of the substrate to be inspected.
- FIG. 2 is a plan view of the turntable device 22 according to one embodiment of the turntable device 22 of FIG. 1 as viewed from above.
- the rotary table device 22 is a conveying means, and includes a circular table 22t and a rotary drive shaft 22s as moving means. During the substrate inspection, the circular table 22t rotates clockwise as indicated by an arrow by the rotary drive shaft 22s. .
- the position at 7:30 is set to P1 along the circumference of the circular table 22t, corresponding to the clock face, and then moved clockwise by 45 degrees, that is,
- the positions at 9 o'clock, 10:30, 12 o'clock, 1 o'clock, 3 o'clock, 4:30 and 6 o'clock are P2, P3, P4, P5, P6 and P8, respectively.
- the 12 o'clock position is P4
- the 6 o'clock position is P8.
- each inspected substrate holder 40 is in a position corresponding to the positions P1 to P8.
- the inspection unit 30 for the substrate to be inspected 42 is provided, and each time the circular table 22t rotates, the substrate to be inspected 42 is sequentially carried into the inspection unit 30.
- an upper inspection jig 28u and a lower inspection jig 28d of the inspection jig 28 are arranged.
- the inspected substrate holder 40 As shown in the inspected substrate holder 40 located at P8, the inspected substrate holder 40 has an opening 40w. Therefore, when the inspected substrate 42 is installed in the inspected substrate holding unit 40, the conductor pattern on the back surface of the inspected substrate 42 is exposed from the opening 40w, whereas in the inspection unit 30 of P4, the lower inspection is performed.
- the pin 32 of the jig 28d (FIG. 1) can come into contact.
- P1 serves as a carry-in port for the substrate to be inspected, and the substrate to be inspected 42 is sequentially placed on the inspected substrate holder 40 that has come to that position.
- the circular table 22t is rotated by 45 degrees, and in response to the rotation, the inspected substrate 42 held by the inspected substrate holding unit 40 sequentially moves to the positions P2 and P3.
- the inspected substrate 42 is measured for electrical characteristics by the inspection unit 30 at the position P4.
- the circular table 22t rotates and the substrate to be inspected 42 is transported to the next position P5.
- the inspected substrate 42 is sequentially conveyed and reaches P7, the inspected substrate 42 is removed from the inspected substrate holder 40.
- the positions P1 to P3 are referred to as upstream portions, and the positions P5 to P7 are referred to as downstream portions.
- the upper inspection jig 28u approaches the inspected substrate 42 from the front surface of the paper surface of FIG. 2, and further, the lower inspection jig 28d approaches from the back surface, and each inspection jig 28u,
- the 28d pins come into contact with the inspection points of the wiring formed on the front and back surfaces of the substrate 42 to be inspected.
- the electrical characteristics of each wiring on the board to be inspected 42 are measured.
- the upper inspection jig 28u and the upper inspection jig 28u are separated from the front surface side and the back surface side of the inspected substrate 42, respectively, and the inspected substrate 42 for which the measurement has been performed is accompanied by the rotation of the circular table 22t.
- the sheet is conveyed to the next position P5.
- the circular table 22t repeats the movement of rotating 45 degrees at a predetermined timing and stopping.
- the inspection substrate 42 is carried into the inspection section P4 at the predetermined timing and inspected.
- the inspection substrate 42 is transported to the next position at the predetermined timing.
- a cleaning mechanism 50 is provided at a position C1 on the circular table 22t between the inspected substrate holder 40 at the position P2 and the inspected substrate holder 40 at the position P3. It is. Another cleaning mechanism 50 is also provided at a position C2 on the circular table 22t between the inspected substrate holder 40 at the position P6 and the inspected substrate holder 40 at the position P7. Those cleaning mechanisms 50 have the same structure.
- the position of C1 is between the P2 substrate holder 40 to be inspected and the P3 substrate holder 40 to be inspected, but it is not necessary to change the interval between the holders.
- the distance from the position C1 to the inspected substrate holder 40 of P2 or the inspected substrate holder 40 of P3 is more than the distance from the inspected substrate holder 40 of P2 to the inspected substrate holder 40 of P3. Is also small.
- the cleaning mechanism 50 at the position C2 between the P6 inspected substrate holder 40 and the P7 inspected substrate holder 40 does not affect the size of the gap. Therefore, even if the cleaning mechanism 50 is provided at the positions C1 and C2, the timing at which the substrate 42 to be inspected is carried into the inspection unit 30 does not change. These cleaning mechanisms 50 move with the rotation of the circular table 22t.
- the cleaning mechanism 50 is provided at the positions C1 and C2.
- the cleaning mechanism 50 can be provided between any two adjacent inspected substrate holders 40.
- the number of cleaning mechanisms 50 is at least one, but can be any number depending on the necessity of achieving the cleaning effect.
- the cleaning mechanism 50 includes a brush portion 52 and a holding portion 54 that holds the brush portion.
- the brush portion 52 is implanted with fine fibers, such as glass fiber fibers.
- fine fibers such as glass fiber fibers.
- the tip of each fiber may be formed thin so that the tip enters between the plurality of pins 32 during cleaning. Further, during cleaning, each fiber may enter between adjacent pins 32.
- the brush portion 52 of the cleaning mechanism 50 is held so as to be inclined (backward inclined) in a direction opposite to the traveling direction. Further, the flow direction of the fibers implanted in the brush portion 52 is the direction in which the cleaning mechanism 50 flows backward from the moving destination. In other words, the flow direction of the fibers is a direction from the position P3 toward the position P2, and a direction from P7 to P6.
- FIG. 3A is an enlarged view of a part of the brush portion 52.
- Each fiber is made of, for example, nylon or PBT (polybutylene terephthalate), and its diameter 52 ⁇ is about 0.1 mm.
- the tip of each fiber is formed in a tapered shape.
- the fiber length of the brush portion 52 is about 20 to 30 mm, and the thickness of the brush portion 52 is about 2 to 4 mm.
- FIG. 3B is a simplified front view for explaining a state in which the cleaning mechanism 50 in C1 or C2 passes through the inspection unit 30 as the circular table 22t rotates.
- the cleaning mechanism 50 at the left end in the drawing sequentially moves to the right along with the circular table 22t.
- Only the upper inspection jig 28u is shown in the inspection unit 30.
- the lower inspection jig 28d functions similarly.
- the upper inspection jig 28u includes a plurality of pins 32, and each pin includes a pin shaft portion 32s and a pin tip portion 32p.
- the rear end portion of the pin shaft portion 32 s is electrically connected to the scanner 20.
- the upper inspection jig 28u is in a standby position for inspecting the next substrate to be inspected.
- the brush portion 52 of the cleaning mechanism 50 is held by the brush holding portion 54 so as to be inclined at an angle of about 45 degrees with respect to the surface of the circular table 22t.
- the brush holding portion 54 is shown in a simplified manner, it is fixed on the circular table 22t so that the inclination angle of the brush portion 52 can be adjusted.
- the inclination angle is preferably an angle between approximately 30 degrees and 50 degrees from the surface of the circular table 22t.
- the fibers of the brush portion 52 of the cleaning mechanism 50 are straight in front of the inspection unit 30, but when passing through the inspection unit 30, the fibers of the pin tip portion 32p of the upper inspection jig 28u. Curve along the guide plate 32g. At that time, solder residue, oxide film fragments, and the like attached to the pin tip portion 32p are wiped off by the fiber tip portion of the brush portion 52. After passing through the inspection unit 30, the fibers of the brush unit 52 of the cleaning mechanism 50 return straight due to elasticity.
- C1 and The cleaning mechanism 50 provided in C2 can clean the pin tip portion 32p of the inspection unit 30. Therefore, it is not necessary to separately provide a cleaning process, and it is not necessary to interrupt the inspection work for cleaning.
- the intake port of the dust absorber may be connected to the vicinity of C1 and C2 on the circular table 22t as necessary. You may provide near the test
- FIG. 4A to 4D are views for explaining a detailed structure of an embodiment of the cleaning mechanism 50.
- FIG. 4A to 4D are views for explaining a detailed structure of an embodiment of the cleaning mechanism 50.
- FIG. 4A is a perspective view of the cleaning mechanism 50
- FIG. 4B is a side view of the cleaning mechanism 50
- the cleaning mechanism 50 includes two brush portions 52 and a brush holding portion 54.
- the brush portion 52 shown at the top is for cleaning the tip portion 32p of the pin of the upper inspection jig 28u
- the brush portion 52 shown at the bottom is the tip portion of the pin 32 of the lower inspection jig 28d. This is for 32p cleaning.
- the brush part 52 shown below FIG. 4B is omitted for simplification.
- Each brush portion 52 includes a fiber bundle portion 52a such as fiberglass and a portion 52b in which the fiber bundle portion 52a is implanted.
- the brush holding portion 54 clamps the two portions 52b in which the fiber bundle portions 52a are implanted.
- each portion 52b is fixed by three bolts.
- each fiber of the brush portion 52 may have a diameter of about 50 to 80 ⁇ m. If the distance between adjacent pins 32 is 40 ⁇ m, for example, and fibers having a diameter smaller than 40 ⁇ m are used, the fibers can enter between such pins, but in some cases, the elasticity may be insufficient. is there.
- an angle adjusting plate 54a is attached to the brush holding portion 54 by screws.
- the screw can be loosened to change the fixed position of the plate.
- the protruding length of the end portion of the plate is changed, thereby changing the position of pushing the fiber bundle portion 52a of the fiberglass or the like.
- the inclination angle of the bundle portion 52a can be changed.
- FIG. 4C is a perspective view showing a state where the cleaning mechanism 50 is attached to the ring-shaped portion 80.
- Two portions of the brush holding portion 54 of the cleaning mechanism 50 are screwed so as to straddle the opening 80 a of the ring-shaped portion 80.
- the brush part 52 shown to the lower side of FIG. 4B can protrude in the downward diagonal direction from the opening part.
- the width of the lower brush portion 52 may be smaller than the width of the upper brush portion 52 shown in FIG. 4C.
- the width of the brush must be larger than the length of the row of pins of the upper and lower inspection jigs 28u, 28d, for example, in FIG. 3B, the length of the row arranged from the front side to the back side of the paper.
- the reason is that the brush can pass through the tip of the pin once so that the solder residue, oxide film fragments, etc. can be removed from all the pins.
- a plurality of cleaning mechanisms are provided and divided according to the number of cleaning mechanisms so that the brush portions do not overlap the path through which the pins pass, and each cleaning brush portion shares the divided paths. You may make it clean the pin in.
- FIG. 4D is a perspective view showing a state in which the ring-shaped portion 80 shown in FIG. 4C is fixed to the back surface of the portion having the opening 56 of the circular table 22t.
- a brush portion 53 having a width smaller than that of the brush portion 52 is attached to the ring-shaped portion 80.
- the brush portion 53 includes a fiber bundle portion 53a such as fiberglass and a portion 53b in which the fiber bundle portion 53a is implanted.
- the brush portion 53 may be protruded from the back surface of the circular table 22t via the opening 56 without being protruded from the surface of the circular table 22t.
- a member having a wide brush portion may be protruded from the lower inspection jig 28d.
- FIG. 5 is a perspective view of a cleaning mechanism 60 according to another embodiment of the present invention.
- the cleaning mechanism 60 includes a brush portion 62 and a holding portion 64 that holds the brush portion 62.
- the brush portion 62 includes a portion 62a of a thin fiber, for example, a glass fiber fiber bundle, and a portion 62b in which the fiber bundle is implanted. You may use the fiber shown to FIG. 3A.
- the brush holding portion 64 clamps the portion 62b in which the fiber bundle portion 62a is implanted.
- the brush holding part 64 is attached to the fixing part 65 by an adjusting screw 64a.
- the inclination of the brush portion 62 can be adjusted by loosening the adjustment screw and changing the angle at which the brush holding portion 64 is held.
- the fixing part 65 is fixed on the surface of the circular table 22t.
- FIG. 6 is a simplified plan view of the shuttle type substrate inspection apparatus 70.
- the shuttle type substrate inspection apparatus 70 includes a cleaning mechanism 90.
- the rotary table device 22 shown in FIG. 2 forms a transport path for moving the plurality of substrate holders 40 to be inspected along a circular path, whereas the shuttle type substrate inspection device shown in FIG.
- Two conveyance paths 70L and 70R are provided, and these conveyance paths have a common conveyance path 70C.
- the inspected substrate holder (tray) 74L moves along the substantially rectangular conveyance path 70L and the common conveyance path 70C, and also inspected along the substantially rectangular conveyance path 70R and the common conveyance path 70C.
- the substrate holding part (tray) 74R moves.
- the inspection unit 30 is provided in the common conveyance path 70C.
- the inspection unit 30 may be provided with one inspection jig, and similarly to the embodiment of FIG. 2, the inspection jig 30 is provided with the inspection jig in the vertical direction, thereby measuring the conductor pattern formed on both surfaces of the substrate to be inspected. May be performed simultaneously.
- some positions of the conveyance path 70 ⁇ / b> L are indicated as PL ⁇ b> 1, P ⁇ b> 2, P ⁇ b> 3, P ⁇ b> 3, and PL ⁇ b> 5 in the counterclockwise direction from the lower left position along the path indicated by the arrow.
- some positions of the conveyance path 70R are indicated as PR1, P2, P3, P4, and PR5 clockwise from the lower right position along the path indicated by the arrow.
- the tray 74L is at the position PL1
- the tray 74R is at the position PR1
- the cleaning mechanism 70 is at the position P3
- the inspection unit 30 is at the position P4.
- Each tray is driven by, for example, an air cylinder installed in each lane. Further, an opening is formed in each tray so that the opening 40w is formed in the inspected substrate holding portion 40 of the turntable device 22 shown in FIG. The side inspection jig can be accessed.
- PL1 is a carry-in portion and carry-out portion of the substrate to be inspected in the conveyance path 70L
- PR1 is a carry-in portion and a carry-out portion of the substrate to be inspected in the conveyance path 70R.
- the inspected substrate 72L is placed on the tray when the tray 74L is at PL1. Then, the tray moves along the conveyance path 70L, and moves to the inspection unit 30 in P4 through P2 and P3 of the common conveyance path 70C.
- the electrical characteristics of the inspected substrate 72 are measured by an inspection jig having a plurality of pins.
- the tray 74L moves from P4, passes through PL5, and reaches PL1 of the carry-out unit and the carry-in unit. Therefore, the inspected substrate 72 that has been inspected is removed from the tray 74L, and the next inspected substrate 72 is placed.
- the tray 74L is stationary at the PL1 while removing the inspected board to be inspected and placing the next new board to be inspected in the unloading section and the loading section PL1. Meanwhile, the tray 74R on which a new substrate 72 to be inspected is moved from PR1 along the transport path 70R and moves to the inspection unit 30 through P2 and P3 of the common transport path 70C, where the test target 30 is inspected. Get a board inspection. As described above, since the inspected substrates in each transport path are alternately inspected, it is possible to eliminate the waste of time for taking out and placing the inspected substrates. As a result, the total time for inspecting a plurality of inspected substrates can be shortened.
- the cleaning mechanism 90 includes a brush portion 92 and a holding portion 94 that holds the brush portion 92.
- the brush portion 92 includes a portion 92a of a bundle of thin fibers, for example, glass fiber fibers, and a portion 92b in which the bundle of fibers is implanted.
- Each fiber is made of nylon, for example, as in the embodiment of FIG. 3A, and its diameter 52 ⁇ is about 0.1 mm.
- the tip of each fiber may be formed in a tapered shape.
- the fiber length of the brush portion 52 can be about 20 to 30 mm, and the thickness of the brush portion 52 can be about 2 to 4 mm.
- the brush holding part 94 clamps the part 92b in which the fiber bundle part 92a is implanted. Further, the brush holding portion 94 is attached to the tray 95 by an adjustment screw (not shown), for example, and the attachment angle of the brush portion 92 can be adjusted.
- the brush portion 92 is inclined in the direction opposite to the traveling direction of the tray 95. The inclination angle is about 45 degrees from the surface of the tray 95. However, it can be set to any angle between about 30 degrees and 50 degrees.
- the tray 95 of the cleaning mechanism 90 can be provided, for example, so as to move in the transport path 70R and the common transport path 70C.
- the tray 95 moves in synchronization with the movement of the tray 74R in the conveyance path 70R while maintaining a certain distance from the tray 74R.
- the tray 95 passes through the common conveyance path 70C so as not to prevent the movement of these trays. Therefore, the movement of the tray 95 does not affect the timing of inspection of the inspected substrates placed on the trays 74L and 74L.
- the tray 95 When cleaning the inspection pin, the tray 95 enters the inspection unit 30 of P4 through the common conveyance path 70C. At the position P4, the brush portion 92 tilted backwards of the cleaning mechanism 90 passes through the row of pins while sweeping the tip of the pin of the inspection jig as shown in FIG. Then move towards PR5.
- the brush portion 92 is provided with an intake port of a dust absorber at the position of P4 passing through the row of pins while sweeping the tip portion of the pin of the inspection jig, and falling solder scraps, other dust, etc. May be collected.
- another cleaning mechanism is also arranged in the conveyance path 70L, and the other cleaning mechanism is moved during one period when the trays 74L and 74L do not pass. Then, the cleaning mechanism 90 may be moved in the next period, and the pins may be cleaned by alternately passing through the inspection unit 30.
- the brush portion needs to be held in an inclined state opposite to the traveling direction.
- the fibers in the brush portion can gradually come into contact with the pin, so that it is not necessary to give an impact to the pin.
- a cleaning brush a brush made of a material whose brush portion is relatively soft (for example, PBT: a brush made of polybutylene terephthalate) is used. It is desirable to clean the pin tip using a brush (for example, a glass fiber brush) made of a relatively hard material.
- PBT a brush made of polybutylene terephthalate
- the embodiment in which the tip of the pin is cleaned using an inclined brush, a foreign substance (for example, solder or the like) that adheres to the tip of adjacent pins and makes the pins poorly connected (short circuit) It is possible to remove the conductive material), and an accurate inspection can be performed.
- the embodiment can be effectively used to remove foreign matter between measurement pins of an inspection jig in which the distance between the measurement pins is short as in the four-terminal measurement method.
- FIG. 7 is a plan view of a turntable device 220 according to another embodiment different from FIG. 2 as viewed from above. Elements that are the same as those of the rotary table device 22 in FIG.
- the cleaning mechanism 50 is located at a position C1 on the circular table 22t between the inspected substrate holder 40 at the position P2 and the inspected substrate holder 40 at the position P3. Instead, the upper pin tip cleaning component 44Ru is disposed along the radial direction. For this reason, the pin tip cleaning component 44Ru is integrated with the turntable 22 device and moves on the same path as the transport path along which the substrate to be inspected 42 is transported. In addition, this installation position is arbitrary and is not limited between the positions P2 and P3.
- the inspection jig 28 in the inspection unit 30 is lifted to a position where it does not come into contact with the upper pin tip cleaning component 44Ru and is held at that position.
- the upper pin tip cleaning part 44Ru extending in the radial direction (that is, formed longer in the radial direction than the circumferential direction and can cover the pin region of the inspection jig 28u) comes to the position P4
- the upper side The inspection jig 28u descends to a position where the pin tip portion 32p (refer to the reference numeral 32p in the figure) lightly contacts the fiber tip of the pin tip cleaning component 44Ru (see FIG. 9).
- the pin tip cleaning component 44Ru which will be described in detail in connection with FIG. 9, is generally a brush with fibers implanted upwardly.
- a lower pin tip cleaning component 44Rd is also installed on the back surface of the table board 22t. Similarly, the lower inspection jig 28d moves up to a position where the pin tip portion comes into light contact with the fiber tip of the lower pin tip portion cleaning component 44Rd, and the cleaning operation is performed.
- the cleaning operation is performed using reciprocating rotational movement in a clockwise direction and a counterclockwise direction within a predetermined angle by the rotary table device 22.
- the fiber of the brush wipes and cleans the pin tip portions of the upper inspection jig 28u and the lower inspection jig 28d.
- This direction is defined as the X direction in order to specify the direction in which the brush is wiped with respect to the pins of the inspection jig 28.
- the intake port of the dust absorber is installed at a suitable location near the position P4. Has been.
- another upper pin tip cleaning component 44Cu is installed along the circumferential direction at a position C2 between the positions P6 and P7 of the table board 22t. For this reason, the pin tip cleaning component 44Cu moves together with the turntable device 22 on the same path as the transport path along which the substrate to be inspected 42 is transported.
- this installation position is not limited between the positions P6 and P7, and may be arbitrary.
- the upper inspection jig 28u is lowered to a position where the pin tip is lightly in contact with the fiber tip of the upper pin tip cleaning component 44Cu.
- a lower pin tip cleaning component 44Cd is also installed on the back surface of the table board 22t.
- the lower inspection jig 28d moves up to a position where the pin tip portion comes into light contact with the fiber tip of the lower pin tip portion cleaning component 44Cd, and the pin tip portion is cleaned.
- the cleaning operation is performed using, for example, an air cylinder 38u.
- the upper pin tip cleaning component 44Cu extending in the circumferential direction (that is, formed longer in the circumferential direction than in the radial direction) has a predetermined length in the radial direction of the table board 22t by the air cylinder 38u. Driven to reciprocate.
- the air cylinder 38u is an actuator (actuating device) that drives the load (pin tip cleaning component 44C) using air pressure, and various types are commercially available.
- a rail (not shown) is provided along the moving direction of the upper pin tip cleaning component 44Cu, and the upper pin tip cleaning component 44Cu is driven radially outward by an air cylinder to stop the air. In such a case, it can be performed by a structure in which the spring is driven inward in the radial direction.
- the turntable 22 is finished. Is rotated slightly to move the upper pin tip cleaning component 44Cu slightly in the circumferential direction, and the cleaning operation is continued. Even if the circumferential length of the pin tip cleaning component 44C cannot cover the pin area of the inspection jig 28u, the cleaning operation is performed several times by using the rotation of the rotary table 22. Can do.
- the brush fiber wipes the pin tip portions of the upper inspection jig 28u and the lower inspection jig 28d in the Y direction.
- This cleaning operation is not executed every time the turntable device 22 makes one rotation. For example, from a conventional experience, a cleaning operation is performed after inspecting a predetermined number (for example, 100) of substrates. Alternatively, the cleaning operation is performed when the substrate inspection data obtained by the substrate inspection apparatus 10 exceeds the inspection threshold at a predetermined frequency, as described in a “trial result” described later.
- FIG. 8 is a partially enlarged view showing the rotary table device 22 having another pin tip portion cleaning component.
- the pin tip cleaning component 44R is installed along the radial direction, and the pin tip cleaning component 44C is installed along the circumferential direction.
- the pin tip cleaning component 44RC of FIG. 8 has a shape in which one pin tip cleaning component extends in the radial direction and the circumferential direction.
- the shape of the pin tip cleaning component 44RC is not limited to the cross shape as shown in the figure.
- the shape is not limited as long as the brush extends in the radial direction and the circumferential direction, and may be, for example, a T-shape or an L-shape.
- the pin tip cleaning component 44RC is also integrated with the turntable 22 and moves on the same path as the transport path along which the substrate to be inspected 42 is transported. This installation position may be arbitrary.
- the cleaning operation of the pin tip 32p is performed.
- the pin tip cleaning component 44RC is driven by the reciprocating rotation of the rotary table device 22 at a predetermined angle, and the reciprocating movement in the Y direction is performed by, for example, the air cylinder 38u. It is driven by a reciprocating movement of a predetermined length.
- the rotary table is slightly rotated and further moved back and forth in the Y direction, so that the cleaning in the Y direction can be performed in several steps.
- the upper and lower pin tip portion cleaning components 44RCu and 44RCd are respectively installed on both the upper surface and the rear surface of the rotary table device 22 in the same manner as the pin tip portion cleaning component of FIG.
- the pin tip portion cleaning component 44RC can wipe the pin tip portion of the inspection jig in the X direction and the Y direction, respectively, with one pin tip portion cleaning component.
- FIGS. 9A and 9B are diagrams illustrating details of the inspection jig 28 and the pin tip portion cleaning component 44.
- the inspection jig 28 has a plurality of pins 32 attached thereto.
- Each pin 32 includes a pin shaft portion 32s and a pin tip portion 32p.
- a signal line connected to the scanner 20 of the substrate inspection apparatus 10 is connected to the rear end of the pin 32, but is omitted in the drawing.
- the pin tip cleaning component 44 includes a brush fixing member 44h and a plurality of brushes 44b fixed thereto, and the brush 44b includes a brush shaft portion 44s and a fiber portion 44f.
- the pin tip cleaning component 44 can be formed by implanting and fixing a plurality of stick brushes on the brush fixing member 44h using, for example, a commercially available stick brush for cleaning and polishing printed circuit boards.
- the fiber portion 44f is made of, for example, glass fiber.
- the number of stick brushes fixed to the brush fixing member 44h is arbitrary, but it was about 6 to 20 in the prototype.
- the fiber portion 44f is in contact with the pin tip portion 32p on average, so that the pin fixing member 44h is not planted in a regular lattice pattern.
- the adjacent brush rows are preferably planted with a half-grid offset.
- the pin tip cleaning component 44 is not directly below the pin tip cleaning component 44. It is preferable not to collide with the portion 32p.
- the pin tip cleaning component 44 is laterally viewed from the left to the right as viewed in the drawing. The fiber portion 44b wipes away the pin tip portion 32p toward one side (that is, scrubs).
- the fiber portion 44b When the fiber portion 44b reaches a position away from the pin tip portion 32p, the fiber portion 44b moves laterally toward the original position, and the fiber portion 44b wipes away the pin tip portion 32p in the opposite direction. Such a cleaning operation is repeated as many times as necessary. When the cleaning operation is completed, the inspection jig 28 is raised to the original position.
- FIG. 10 is a diagram for explaining a substrate holding portion used in the shuttle type substrate inspection apparatus 150. Except for the substrate holding portion of the shuttle type substrate inspection apparatus 150, the substrate test apparatus is the same as that described with reference to FIG.
- the basic configuration is the same as that of the shuttle type substrate inspection apparatus 70 of FIG. Reference numeral 29 denotes an alignment camera.
- a tray 74L or 74R on which a substrate 72 to be inspected is placed moves on a plate-like rectangular table 22-1 along a predetermined lane.
- the left tray 74L moves through the left lane 70L via the position P3 and then through the central lane 70C to the position P5. Then, the substrate inspection is carried out at a position P5. After completion of the substrate inspection, the vehicle passes through the left lane 70L and returns to the position P1 via the position P6.
- the board 72 to be inspected installed on the right tray 74R at the position P2 passes through the right lane 70R via the position P3, and when the inspection of the preceding left board is completed, the central lane 70C is moved to the position P5.
- the substrate inspection is performed at the position P5. After the substrate inspection, the vehicle passes through the right lane 70L, returns to the position P2 via the position P7.
- positions P1, P3, and P4 are the upstream part
- the position P5 is the inspection part
- the positions P6 and P1 are the downstream part.
- positions P2, P3, and P4 are upstream
- position P5 is an inspection section
- positions P7 and P2 are downstream sections.
- the total time for inspecting the plurality of substrates can be shortened. Yes.
- the shuttle type substrate inspection apparatus 150 can also be provided with a cleaning mechanism.
- the pin tip cleaning component 44 includes a radially extending pin tip cleaning component 44R, a circumferentially extending pin tip cleaning component 44C, and a radial and circumferential extending pin tip cleaning component 44RC. Either type is acceptable.
- the pin tip cleaning component 44 installed in the right tray 74R is reciprocated by a predetermined length in the X direction by an air cylinder (not shown) at a position P5, and the pin tip 32p of the inspection jig 28 is moved. Perform the cleaning operation. Further, if necessary, the pin tip portion 32p of the inspection jig 28 is cleaned by reciprocating a predetermined length in the Y direction. Accordingly, the pin tip cleaning component 44 is integrated with the tray 74R and moves on the same path as the transport path along which the substrate 72 to be inspected is transported. Although not shown in the figure, when cleaning the tip of the pin, in order to collect the fallen solder scraps and other dust, the intake port of the dust absorber is installed at a suitable location near position P5. Has been.
- This cleaning operation is performed, for example, after inspecting a predetermined number (for example, 100) of substrates.
- the cleaning operation is executed when the substrate inspection data obtained by the substrate inspection apparatus 150 exceeds a predetermined threshold value as described in a “trial result” described later.
- the electrical resistance value of the conductor pattern is measured, and the quality is determined.
- the pass / fail criterion is determined to be a non-defective product if the measured resistance value of the conductor pattern is equal to or less than the inspection threshold value of the following equation, and is determined to be a defective product if it exceeds the test threshold value.
- Inspection threshold L + k ( ⁇ ) L: Conductor pattern resistance value of non-defective substrate k: Contact resistance between pin and conductor pattern, resistance such as solder adhesion at the tip of the pin. In some cases, the threshold was exceeded. In this case, as described in the background art, the tip end of the pin is manually cleaned so that the measured resistance value of the substrate conductor recovers below the inspection threshold value.
- a brush for example, PBT: polybutylene terephthalate brush
- PBT polybutylene terephthalate brush
- the tip of the pin was cleaned about several tens of times in the X direction using a brush (for example, a glass fiber brush) having a relatively hard brush portion.
- a brush for example, a glass fiber brush
- the measured resistance value was substantially below the inspection threshold value.
- the pin tip was cleaned several tens of times in the X direction and then several tens of times in the Y direction. As a result, it was confirmed that all measured resistance values were below the inspection threshold value.
- the width of the fluctuation value of the measured resistance value of the conductor pattern on the substrate was within 1 ⁇ .
- the material of the brush used is preferably a harder material (glass fiber) than a softer material (PBT). It can be seen that the tip of the pin is almost cleaned by cleaning the tip of the pin several times in one direction (for example, the X direction). Furthermore, it can be seen that the pin tip is completely cleaned by cleaning the pin tip in several directions in two directions (for example, X direction and Y direction).
- Whether the cleaning operation is performed in one direction or two directions is determined by the frequency at which the measured resistance value of the conductor pattern of the substrate to be inspected obtained during the substrate inspection exceeds the inspection threshold.
- this embodiment is a two-terminal measurement method in which, particularly, solder scraps or the like remain between the tip portion of the pin and the inspection point, so that their contact resistance value fluctuates, and as a result, the measurement value is affected. Suitable for cleaning pins when performing substrate inspection using
- the cleaning operation can be mechanized. It was difficult to manage the quality level of cleaning manually. However, by mechanizing the cleaning operation, it was possible to manage the quality level of the cleaning of the tip of the pin at a constant level.
- the substrate inspection apparatus disclosed in Patent Documents 1 and 2 moves cleaning means provided separately from the flow of a plurality of substrates to be inspected to a place such as a contact portion or a contact pin during cleaning. Cleaning is being performed.
- the substrate tip inspection work can be performed without substantially interrupting the substrate inspection work. It can be carried out in an inspection process and a series of processes.
- a cleaning mechanism that moves to the position of the substrate to be inspected following the same transport path as seen from the inspection jig.
- the board inspection device is equipped with a cleaning mechanism, which eliminates the need to remove and replace the inspection jig.
- the wiring of the substrate to be inspected is extremely densified, and the pin arrangement of the inspection jig corresponding thereto is also extremely densified. For this reason, when the inspection jig is reattached to the substrate inspection apparatus, it takes a long time to determine the position while correcting the position.
- By providing the substrate inspection apparatus with a cleaning mechanism it is not necessary to attach or detach the inspection jig itself, and the time required for cleaning the pin tip can be greatly reduced. As a result, the total substrate inspection time required for inspecting a certain number of substrates can be greatly shortened.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Cleaning In General (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
Description
最初に、基板検査装置全体について、簡単に説明する。
図2は、図1の回転テーブル装置22の一実施例に係る回転テーブル装置22を上方から見た平面図である。回転テーブル装置22は搬送手段で、移動手段の円形テーブル22t及び回転駆動軸22sを備えており、基板検査の際に、円形テーブル22tは回転駆動軸22sによって矢印で示すように時計回りに回転する。
図4Aから図4Dは、クリーニング機構50の一実施形態の詳細な構造を説明するための図である。
図6は、シャトル型基板検査装置70の簡略化した平面図である。シャトル型基板検査装置70はクリーニング機構90を備える。図2に示す回転テーブル装置22は、複数の被検査基板保持部40を円形状の経路に沿って移動する搬送路を形成するのに対し、図6に示すシャトル型基板検査装置は、2つの搬送路70L及び70Rの2つの搬送路を備え、それらの搬送路は、共通の搬送路70Cを持つ。そのような略矩形状の搬送路70L及び共通搬送路70Cに沿って被検査基板保持部(トレイ)74Lが移動し、また、略矩形状の搬送路70R及び共通搬送路70Cに沿って被検査基板保持部(トレイ)74Rが移動する。
図7は、図2と異なる他の実施形態に係る回転テーブル装置220を上方から見た平面図である。図2の回転テーブル装置22と同様の要素には同一の符号を付してその説明は省略する。
図8は、他のピン先端部清浄化部品を有する回転テーブル装置22を示す一部拡大図である。
図9(A)及び図9(B)は、検査治具28とピン先端部清浄化部品44の詳細を説明する図である。
本実施形態のクリーニング機構は、回転テーブル装置220を利用した基板検査装置10に限定されない。例えば、図10は、シャトル型基板検査装置150で使用される基板保持部分を説明する図である。シャトル型基板検査装置150の基板保持部分以外は、図7で説明した基板試験装置と同じである。また、基本的な構成は図6のシャトル型基板検査装置70の構成と同じである。符号29はアライメントカメラである。
例えば、基板検査装置10,150では、導体パターンの電気抵抗値を測定して、その良否を判定している。例えば、良否の判定基準は、導体パターンの測定抵抗値が、次式の検査しきい値以下であれば良品と判定し、検査しきい値を超えると不良品と判定する。
L:良品基板の導体パターン抵抗値
k:ピンと導体パターンの接触抵抗、ピン先端部の半田付着等の抵抗
一例で説明すると、100枚程度の基板検査を実施すると、基板導体の測定抵抗値が検査しきい値を超えてしまう場合があった。この場合、背景技術で説明したように、手作業にてピン先端部のクリーニングを行って、基板導体の測定抵抗値が検査しきい値以下に回復するようにしていた。
以上説明したように、基板検査装置にクリーニング機構を備えることにより、次のような利点・効果が生じる。
本実施形態により、ピン先端部のクリーニング機構を有する基板検査装置を実現することが出来た。
背景技術で説明したように、従来は、基板検査装置から検査治具を取り外して、手作業にて検査治具のピンをブラシによりクリーニングしていた。
基板検査装置にクリーニング機構を備えることにより、クリーニング作業の自動化を図ることが出来た。
基板検査装置にクリーニング機構を備えることにより、検査治具の取り外し及び再取り付けが不要になった。被検査基板の配線が極度に高密度化され、これに対応する検査治具のピン配列も極度に高密度化されている。そのため、検査治具を基板検査装置に再取り付けする際に、位置補正をしながら位置を決定するために多大の時間を要していた。基板検査装置にクリーニング機構を備えることにより、検査治具の着脱自体が不要となり、ピン先端部のクリーニングに要する時間を大幅に短縮することが出来た。結果的に、一定の枚数の基板を検査に要する合計基板検査時間を大幅に短縮することが出来た。
従来、清浄化作業後に検査治具を基板検査装置に再取り付けする際、少しずつ設置位置の補正を繰り返しながら最終的な位置を決定して取り付けるような位置設定を行っていた。しかし、このような取り付け位置設定作業では、どうしても検査治具着脱の前後で位置ズレを起こす不具合があった。しかし、ピン先端部のクリーニング機構を、基板検査装置に組み込むことにより、ピン先端部のクリーニングの際の検査治具の着脱自体が不要になり、着脱の前後で生じる位置ズレの問題が解消した。
以上、本発明に係るクリーニング機構を備える基板検査装置の望ましい実施態様について説明したが、本発明はその実施態様に拘束されるものではなく、当業者が容易になしえる追加、削除、改変等は、本発明に含まれるものであり、また、本発明の技術的範囲は、添付の特許請求の範囲の記載によって定められることを承知されたい。
11・・・制御装置
22・・・回転テーブル装置
22t・・・円形テーブル
22s・・・回転駆動軸
28u・・・上側検査治具
28d・・・下側検査治具
32・・・ピン
30・・・検査部
40・・・被検査基板保持部
42・・・被検査基板
44・・・ピン先端部清浄化部品
44R・・・半径方向延在ピン先端部清浄化部品
44C・・・円周方向延在ピン先端部清浄化部品
44RC・・・半径方向及び円周方向延在ピン先端部清浄化部品
44u・・・上側ピン先端部清浄化部品
44d・・・下側ピン先端部清浄化部品
44Ru・・・上側半径方向延在ピン先端部清浄化部品
44Cu・・・上側円周方向延在ピン先端部清浄化部品
44RCu・・・上側半径方向及び円周方向延在ピン先端部清浄化部品
44Rd・・・下側半径方向延在ピン先端部清浄化部品
44Cd・・・下側円周方向延在ピン先端部清浄化部品
44RCd・・・下側半径方向及び円周方向延在ピン先端部清浄化部品
44b・・・ブラシ
44f・・・ファイバー部
44h・・・ブラシ固定部材
48・・・トレイ
50,70,90・・・クリーニング機構
52,72,92・・・ブラシ部分
54,74,94・・・ブラシ保持部
54a・・・調整プレート
64a・・・調整ねじ
70L,70R・・・搬送路
70C・・・共通搬送路
Claims (10)
- 搬入部から搬出部までの搬送路と、該搬送路上に所定の間隔で設けられた被検査基板保持部と、該被検査基板保持部を前記搬送路に沿って移動する移動手段とを備える搬送手段と、
前記搬送路の途中に設けられていて、前記搬送手段の前記被検査基板保持部に保持された被検査基板を順次検査する検査部であって、検査治具を備え、該検査治具に設けられた複数のピンを被検査基板上の配線の検査点に接触させることによって該配線の電気的特性を測定する検査部と、
前記搬送路上に所定の間隔で設けられた任意の隣り合う被検査基板保持部の間に設けられたクリーニング手段であって、前記搬送手段の前記移動手段によって移動され、前記検査部を通過する際に前記複数のピンのクリーニングを行うクリーニング手段とを備える、基板検査装置。 - 請求項1の基板検査装置において、前記任意の隣り合う被検査基板保持部の間に設けられた前記クリーニング手段と隣接する2つの前記被検査基板保持部との各距離は、前記任意の隣り合う被検査基板保持部の間の距離よりも小さい、基板検査装置。
- 請求項2の基板検査装置において、前記クリーニング手段がブラシを備えていて、該ブラシが、前記移動手段によって移動される移動方向に沿った繊維の流れを有し、前記移動方向とは反対の方向に傾斜して保持されている、基板検査装置。
- 請求項3の基板検査装置において、前記ブラシが、水平面に対し約30度から50度の間の任意の角度に傾斜して保持されている、基板検査装置。
- 請求項3の基板検査装置において、
前記ブラシは、グラスファイバーからなる、基板検査装置。 - 請求項1の基板検査装置において、
前記搬送手段は、円形テーブルと該円形テーブルを回転駆動する回転駆動手段とを有する回転テーブル装置を備えており、前記被検査基板保持部が、前記円形テーブル上の円周に沿った位置に所定間隔で設けられており、また、前記クリーニング手段が、前記円形テーブル上に設けられた前記被検査基板保持部の任意の隣り合う2つの被検査基板保持部の間に少なくとも1つ設けられた、基板検査装置。 - 請求項1の基板検査装置において、
前記搬送手段が、2つの前記搬送路と、該2つの搬送路の各々に配置された前記被検査基板保持部と、該被検査基板保持を各搬送路に沿って移動する移動手段とを備え、
前記2つの搬送路の一部の経路が共通し、該共通する経路上の任意の位置に前記検査部が配置されており、さらに、前記2つの搬送路の少なくとも一方に1つの前記クリーニング手段が設けられており、
前記共通する前記経路上の前記検査部を、前記2つの被検査基板保持部が所定の時間間隔をおいて通過する一方、該間隔の間に、前記クリーニング手段が前記共通する前記経路を通過する、基板検査装置。 - 請求項1の基板検査装置において、
前記クリーニング手段は、前記検査治具のピン先端部から離れた位置から一方に向けて移動開始し該ピン先端部に接触しながらクリーニングして該ピン先端部から離れた位置まで移動して停止し、その後、元の位置まで反対向きに移動して該ピン先端部をクリーニングし、この往復移動を繰り返す、基板検査装置。 - 請求項1の基板検査装置において、
前記搬送手段は、回転駆動軸と円形テーブルとを有する回転テーブルで形成され、
前記円形テーブルに円周状に保持された複数枚の被検査基板の間に、前記クリーニング手段が設けられ、該クリーニング手段は、前記回転駆動軸の回転により、前記被検査基板と同一の搬送経路を辿って前記検査部に移動する、基板検査装置。 - 検査治具に設けられた複数のピンを被検査基板上の配線の検査点に接触させる
ことによって該配線の電気的特性を測定する検査部に、既定のタイミングで、複数の前記被検査基板を順次搬送する一方、
前記既定のタイミングと異なるタイミングで、ブラシを有するクリーニング手段を前記検査部を通過させて前記複数のピンをクリーニングする、基板検査装置における複数のピンのクリーニング方法。
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WO2011145156A1 (ja) * | 2010-05-21 | 2011-11-24 | パナソニック株式会社 | 半導体装置、その検査方法及びその制御方法 |
JP2013032971A (ja) * | 2011-08-02 | 2013-02-14 | Hioki Ee Corp | 基板検査装置 |
JP2013250259A (ja) * | 2012-05-30 | 2013-12-12 | Samsung Electro-Mechanics Co Ltd | 基板検査装置及びその位置補正方法 |
JP2015213121A (ja) * | 2014-05-02 | 2015-11-26 | 株式会社ヒューモラボラトリー | チップ電子部品の電気特性の連続的な検査方法 |
TWI632382B (zh) * | 2013-03-28 | 2018-08-11 | 東京威力科創股份有限公司 | Probe device |
CN110217429A (zh) * | 2019-06-06 | 2019-09-10 | 重庆市润金新材料科技有限公司 | 一种键合金丝卷筒包装设备及其使用方法 |
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JP5461268B2 (ja) * | 2010-03-29 | 2014-04-02 | 日置電機株式会社 | 基板検査システム |
JP2013024829A (ja) * | 2011-07-26 | 2013-02-04 | Seiko Epson Corp | 電子部品搬送装置及び電子部品搬送方法 |
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WO2018170806A1 (zh) * | 2017-03-22 | 2018-09-27 | 深圳市汇顶科技股份有限公司 | 测试头的清洁方法以及测试系统 |
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WO2011145156A1 (ja) * | 2010-05-21 | 2011-11-24 | パナソニック株式会社 | 半導体装置、その検査方法及びその制御方法 |
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JP2013250259A (ja) * | 2012-05-30 | 2013-12-12 | Samsung Electro-Mechanics Co Ltd | 基板検査装置及びその位置補正方法 |
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