WO2009096119A1 - 電子部品ハンドリング装置および電子部品の位置検出方法 - Google Patents
電子部品ハンドリング装置および電子部品の位置検出方法 Download PDFInfo
- Publication number
- WO2009096119A1 WO2009096119A1 PCT/JP2008/073290 JP2008073290W WO2009096119A1 WO 2009096119 A1 WO2009096119 A1 WO 2009096119A1 JP 2008073290 W JP2008073290 W JP 2008073290W WO 2009096119 A1 WO2009096119 A1 WO 2009096119A1
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- WIPO (PCT)
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- electronic component
- edge
- terminal
- axis direction
- handling apparatus
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- 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
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2893—Handling, conveying or loading, e.g. belts, boats, vacuum fingers
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- 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
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2891—Features relating to contacting the IC under test, e.g. probe heads; chucks related to sensing or controlling of force, position, temperature
Definitions
- the present invention relates to an electronic component handling apparatus capable of detecting the position of an electronic device under test having a terminal at an edge, and a position detection method, a displacement detection method, an attitude correction method, and a terminal failure detection method of an electronic component.
- the present invention also relates to a method for inspecting dimensions of electronic parts.
- an electronic component testing apparatus In the manufacturing process of electronic components such as IC devices, an electronic component testing apparatus is used to test the performance and functions of the finally manufactured electronic components.
- a conventional electronic component testing apparatus includes a test unit for testing an electronic component, a loader unit that sends an IC device before the test to the test unit, and an unloader unit that extracts and classifies a tested IC device from the test unit And.
- the loader unit includes a buffer stage that can reciprocate between the loader unit and the test unit, and an adsorption unit that can adsorb and hold the IC device.
- a movable loader unit conveyance device is provided in the region from the customer tray to the heat plate and from the heat plate to the buffer stage.
- the test unit is provided with a test unit transport device that includes a contact arm that can hold the IC device by suction and press it against the socket of the test head, and is movable in the region of the test unit.
- the loader unit conveying device holds the IC device accommodated in the customer tray by the adsorption unit and places it on the heat plate, and then again uses the adsorption unit to remove the IC device on the heat plate heated to a predetermined temperature. Adsorb and hold and place on the buffer stage. Then, the buffer stage on which the IC device is mounted moves from the loader unit to the test unit side. Next, the test unit transport device sucks and holds the IC device on the buffer stage by the contact arm and presses it against the socket of the test head to connect the external terminal (device terminal) of the IC device and the connection terminal (socket terminal) of the socket. Make contact.
- a test signal supplied from the tester body to the test head through the cable is applied to the IC device, and a response signal read from the IC device is sent to the tester body through the test head and the cable, thereby causing the electrical characteristics of the IC device. Measure.
- IC devices used in mobile communication devices have been reduced in area and thickness, while the number of device terminals has increased rapidly as integrated circuits have become highly integrated and multifunctional. Due to the increase, the device terminals are miniaturized and the pitch of the arrangement interval is narrowed. As device terminals become narrower and finer in this way, it becomes difficult to contact the device terminals with the socket terminals with high accuracy.
- an electronic component test apparatus that measures the position of an IC device using an image processing technique and positions the test head with respect to a socket has been developed (for example, Patent Document 1).
- an IC device under test being transported by a transport device is photographed by an optical imaging device such as a CCD (Charge Coupled Device) camera, and the position of the IC device is based on the captured image.
- the amount of deviation is calculated.
- the transport device corrects the posture of the IC device under test based on the calculated amount of displacement and transports the IC device under test to the socket.
- the calculation of the positional deviation amount of the IC device is performed by, for example, detecting a device terminal in the image using an image processing technique, and determining the center coordinates (coordinates of the center of gravity) of each device terminal and the device terminals of the IC device serving as a reference. This is done by comparing the center coordinates.
- FIG. 12 shows a binary image obtained by binarizing this image. The same applies to this binary image.
- the center of gravity of the pad 2a cannot be calculated from the image where the pads 2a are connected, and the position of the pad 2a cannot be specified. In this case, the amount of misalignment of the IC device cannot be calculated, and accurate positioning of the IC device with respect to the socket becomes difficult.
- the contact chuck of the contact arm is made of a black plastic resin so that the background of the IC device to be photographed does not shine, or an aluminum contact chuck Or black anodized.
- the contact chuck is made of plastic resin, the heat resistance of the contact chuck is lowered, so that there is a problem that the IC device cannot be measured at a high temperature. Further, when alumite is formed on the contact chuck, there is a problem that when the frequency of use increases, the alumite is worn, the underlying aluminum is exposed, and the background of the IC device shines.
- the present invention has been made in view of such a situation, and an electronic component handling apparatus and an electronic component that can accurately identify the position of a terminal even if the electronic component has a terminal at an edge portion. It is an object of the present invention to provide a position detection method, a displacement detection method, an attitude correction method, a terminal defect detection method, and an electronic component dimensional inspection method.
- the present invention conveys the electronic component to a contact portion and electrically connects the contact portion.
- An electronic component handling device for connecting to an imaging device for photographing a terminal of a predetermined electronic component, and extracting an edge of the terminal of the electronic component from image data photographed by the imaging device,
- an electronic component handling device comprising an edge detecting means for specifying the position of the electronic component (Invention 1).
- the test object is an electronic component having a terminal at the edge, and the background of the electronic component shines during shooting, and an image in which each terminal is connected by a bright background is obtained.
- the edge of the terminal of the electronic component can be detected, and thereby the position of the terminal can be specified with high accuracy.
- the edge detection means extracts an edge of a terminal existing in a direction intersecting with a direction in which the terminals of the electronic component are arranged (Invention 2).
- the said edge detection means is the said electronic component. It is preferable to extract the edges of the terminals lined up in the X-axis direction and the edges of the terminals lined up in the Y-axis direction of the electronic component (Invention 3).
- the edge detection means scans the terminals of the electronic component in a predetermined direction, and extracts edges that change from light to dark and edges that change from dark to light. Preferred (Invention 4).
- the edge detection means specifies the position of the edge of the terminal after binarizing the extracted edge (Invention 5).
- the binarization processing may be performed by extracting the edge changing from light to dark and the edge changing from dark to light at a time (Invention 6), or from the light.
- the edges that change darkly and the edges that change from dark to light may be extracted separately and binarized (Invention 7).
- the scanning is performed by arranging the terminals of the electronic component. It is preferable to carry out along the direction (Invention 8).
- the electronic component handling device includes a transport device that can hold the electronic component and press the electronic component against the contact portion, and the imaging device is pre-test held by the transport device. It is preferable to photograph the terminal of the electronic component (Invention 10).
- a storage device that stores reference position information of an edge of a terminal of a reference electronic component, the reference position information of the edge is read from the storage device, and the reference position of the read edge It is preferable that the information processing apparatus further includes a position shift detection unit that compares the information with the position information of the edge specified by the edge detection unit and calculates a position shift amount of the predetermined electronic component (Invention 11).
- the electronic component handling device includes a transfer device that holds the electronic component and can be pressed against the contact portion, and the transfer device is an electronic component that the transfer device holds.
- a posture correction device that corrects a posture; the imaging device photographs a terminal of an electronic component before the test held by the transport device; and the transport device detects the electronic device detected by the misalignment detection unit. It is preferable to correct the posture of the electronic component held by the transfer device based on the amount of component displacement (Invention 12).
- a storage device that stores reference position information of an edge of a terminal of a reference electronic component, the reference position information of the edge is read from the storage device, and the reference position of the read edge It may further comprise terminal failure detection means for comparing the information with information on the position of the edge specified by the edge detection means, thereby detecting a terminal failure of the predetermined electronic component (invention 13).
- the electronic component handling for transporting the electronic component to a contact portion and electrically connecting to the contact portion is performed.
- An image pickup device for photographing a terminal of a predetermined electronic component, and an edge interval for extracting an edge of the electronic component terminal from image data photographed by the image pickup device and detecting an edge interval of the terminal A detection unit; a storage device that stores reference interval information of an edge of a terminal of an electronic component serving as a reference; the reference interval information of the edge is read from the storage device; the reference interval information of the read edge; and the edge interval
- a dimension inspection unit that compares the edge interval information detected by the detection unit and inspects the dimension of the predetermined electronic component.
- size of electronic component includes the size of the electronic component itself (outer shape) and the size of the terminal of the electronic component.
- invention 14 by extracting the edge and specifying the position of the edge, it is possible to accurately detect the edge interval even for an electronic component having a terminal at the end edge.
- the edge interval is deviated from the reference, it is possible to detect abnormality of the terminal of the electronic component.
- the external dimension of the electronic component usually corresponds to the edge interval of the terminal of the electronic component on a one-to-one basis, if the edge interval is deviated from the reference, the external dimension of the electronic component is abnormal, or It is possible to detect that the type of electronic component to be tested is wrong.
- the present invention relates to a method for detecting the position of an electronic component having a terminal at an edge in an electronic component handling apparatus, the first step of photographing the terminal of the electronic component, and photographing at the first step. And a second step of extracting the edge of the terminal of the electronic component from the obtained image data and identifying the position of the edge (Invention 15).
- the second step includes the X-axis of the electronic component.
- the method includes a step of extracting edges of terminals arranged in the direction and a step of extracting edges of terminals arranged in the Y-axis direction of the electronic component (Invention 17).
- the terminals of the electronic component are scanned in a predetermined direction to extract edges that change from light to dark and edges that change from dark to light.
- the binarization processing may be performed by extracting an edge that changes from light to dark and an edge that changes from dark to light at a time (Invention 20).
- the edges that change darkly and the edges that change from dark to light may be extracted separately and binarized (Invention 21).
- the scanning is performed by arranging the terminals of the electronic component. It is preferable to carry out along the direction (Invention 22).
- the present invention provides a method for detecting a positional shift of an electronic component having a terminal at an edge in an electronic component handling apparatus, wherein the reference position information of the edge of the terminal of the electronic component serving as a reference is stored.
- the reference position information of the edge from the storage device the reference position information of the read edge is compared with the information of the position of the edge specified in the third step, and the position of the predetermined electronic component
- a misregistration detection method characterized by comprising a fourth step of calculating a misalignment amount (Invention 24).
- the present invention provides a method for correcting the attitude of an electronic component having a terminal at an end edge held by a conveying device in an electronic component handling apparatus, wherein the edge of the terminal of the electronic component serving as a reference is corrected.
- the first step of storing reference position information, the second step of photographing the terminal of the electronic component held by the transport device, and the edge of the terminal of the electronic component from the image data photographed in the second step A third step of extracting and specifying the position of the edge; and reading out the reference position information of the edge from the storage device; the reference position information of the read edge; and the position of the edge specified in the third step.
- a sixth aspect of the present invention is a method for detecting a terminal failure of an electronic component having a terminal at an edge in an electronic component handling apparatus, wherein the reference position information of the edge of the terminal of the electronic component serving as a reference is stored.
- a first step, a second step of photographing a terminal of a predetermined electronic component, and a third step of extracting the edge of the terminal of the electronic component from the image data photographed in the second step and specifying the position of the edge And reading out the reference position information of the edge from the storage device, and comparing the read reference position information of the edge with the information of the position of the edge specified in the third step, thereby the predetermined electronic component And a fourth step of detecting a terminal failure of the terminal (invention 26).
- the seventh aspect of the present invention is a method for inspecting a dimension of an electronic component having a terminal at an edge in an electronic component handling apparatus, and stores first reference interval information of an edge of a terminal of the electronic component serving as a reference.
- a second step of photographing a terminal of a predetermined electronic component, and a third step of extracting an edge of the terminal of the electronic component from the image data photographed in the second step and detecting an edge interval of the terminal And reading the reference interval information of the edge from the storage device, and comparing the read reference interval information of the edge with the information of the edge interval detected in the third step,
- a fourth step of inspecting dimensions is provided (Invention 27).
- the position of the terminal can be specified with high accuracy even for an electronic component having a terminal at the edge.
- FIG. 2 is a partial cross-sectional side view (II cross-sectional view in FIG. 1) of the handler according to the same embodiment. It is a side view of a contact arm and an imaging device used in the handler. It is a side view of a contact arm and a contact portion used in the handler. It is a bottom view of IC device (QFN). It is a figure which shows the edge of the X-axis direction in an IC device. It is a figure which shows the image which extracted the edge of the X-axis direction in an IC device. It is a figure which shows the edge of the Y-axis direction in an IC device.
- QFN IC device
- FIG. 1 is a plan view of a handler according to an embodiment of the present invention
- FIG. 2 is a partial sectional side view of the handler according to the embodiment (II sectional view in FIG. 1)
- FIG. 3 is a contact used in the handler.
- FIG. 4 is a side view of a contact arm and a contact portion used in the handler.
- the IC device under test in the present embodiment is an electronic component having a terminal at the edge.
- the QFN shown in FIG. 5 is described as an example, but the present invention is limited to this. It is not a thing.
- the IC device under test may be QFP (Quad Flat Package), PLCC (Plastic Leaded Chip Carrier), SOP (Small Outline Package), or the like.
- a pad 2a as a terminal is provided at the edge of each of the four sides on the bottom surface of the IC device 2 under test (QFN).
- the main body of the IC device 2 under test is black, and the pad 2a is a metal color such as gold.
- the pad 2a is white in image processing.
- the electronic component testing apparatus 1 in this embodiment includes a handler 10, a test head 300, and a tester 20, and the test head 300 and the tester 20 are connected via a cable 21.
- the IC device before the test on the supply tray stored in the supply tray stocker 401 of the handler 10 is conveyed and pressed against the contact portion 301 of the test head 300, and the IC device is connected via the test head 300 and the cable 21.
- the IC device for which the test has been completed is mounted on the classification tray stored in the classification tray stocker 402 according to the test result.
- the handler 10 mainly includes a test unit 30, an IC device storage unit 40, a loader unit 50, and an unloader unit 60. Hereinafter, each part will be described.
- the IC device storage unit 40 is a means for storing IC devices before and after the test.
- the IC device storage unit 40 mainly includes a supply tray stocker 401, a sorting tray stocker 402, an empty tray stocker 403, and a tray transport device 404. Consists of
- the supply tray stocker 401 a plurality of supply trays loaded with a plurality of IC devices before the test are stacked and stored.
- a stocker 401 is provided.
- the classification tray stocker 402 is loaded with a plurality of classification trays loaded with a plurality of IC devices after the test. In this embodiment, as shown in FIG. Is provided. By providing these four classification tray stockers 402, the IC devices can be sorted and stored in a maximum of four classifications according to the test results.
- the empty tray stocker 403 stores empty trays after all the pre-test IC devices 20 mounted on the supply tray stocker 401 have been supplied to the test unit 30.
- the number of stockers 401 to 403 can be appropriately set as necessary.
- the tray transport device 404 is transport means that can move in the X-axis and Z-axis directions in FIG. 1, and is mainly composed of an X-axis direction rail 404a, a movable head portion 404b, and four suction pads 404c.
- a range including the supply tray stocker 401, a part of the sorting tray stocker 402, and the empty tray stocker 403 is defined as an operation range.
- an X-axis direction rail 404a fixed on the base 12 of the handler 10 supports the movable head unit 404b in a cantilevered manner so as to be movable in the X-axis direction.
- the Z-axis direction actuator not to be used and four suction pads 404c are provided at the tip.
- the tray transport device 404 sucks and holds the empty tray emptied by the supply tray stocker 401 by the suction pad 404c, lifts it by the Z-axis direction actuator, and slides the movable head portion 404b on the X-axis direction rail 404a. By moving it, it is transferred to the empty tray stocker 401.
- the empty tray is sucked and held from the empty tray stocker 403, and is lifted by the Z-axis direction actuator.
- the movable head unit 404b is slid on the rail 404a to be transferred to the sorting tray stocker 402.
- the loader unit 50 is a unit for supplying the IC device before the test from the supply tray stocker 401 of the IC device storage unit 40 to the test unit 30.
- the loader unit 50 mainly includes a loader unit transport device 501 and two loader buffer units. 502 (two in the negative direction of the X axis in FIG. 1) and a heat plate 503.
- the IC device before the test is moved from the supply tray stocker 401 to the heat plate 503 by the loader unit conveyance device 501 and heated to a predetermined temperature by the heat plate 503, and then again loaded by the loader unit conveyance device 501 by the loader buffer.
- the loader buffer unit 502 introduces the data into the test unit 30.
- the loader unit transport device 501 moves the IC device on the supply tray of the supply tray stocker 401 of the IC device storage unit 40 onto the heat plate 503, and moves the IC device on the heat plate 503 onto the loader buffer unit 502. It is a means to move, and is mainly comprised from the Y-axis direction rail 501a, the X-axis direction rail 501b, the movable head part 501c, and the adsorption
- the loader unit transport device 501 has an operation range including a supply tray stocker 401, a heat plate 503, and two loader buffer units 502.
- the two Y-axis direction rails 501a of the loader unit transport device 501 are fixed on the base 12 of the handler 10, and the X-axis direction rail 502b slides in the Y-axis direction between them. It is supported movably.
- the X-axis direction rail 502b supports a movable head portion 501c having a Z-axis direction actuator (not shown) so as to be slidable in the X-axis direction.
- the movable head portion 501c includes four suction portions 501d each having a suction pad 501e at the lower end portion. By driving the Z-axis direction actuator, the four suction portions 501d are independently raised and lowered in the Z-axis direction. Can be made.
- Each suction portion 501d is connected to a negative pressure source (not shown), and can suck and hold an IC device by sucking air from the suction pad 501e to generate a negative pressure.
- the IC device can be released by stopping the suction of air from the pad 501e.
- the heat plate 503 is a heating source for applying a predetermined thermal stress to the IC device.
- the heat plate 503 is a metal heat transfer plate having a heat generation source (not shown) at the bottom.
- a plurality of recesses 503a for dropping an IC device are formed.
- a cooling source may be provided instead of the heating source.
- the loader buffer unit 502 is a means for reciprocally moving the IC device between the operation range of the loader unit transport device 501 and the operation range of the test unit transport device 310, and mainly includes a buffer stage 502a and an X-axis direction actuator. 502b.
- a buffer stage 502a is supported at one end of an X-axis direction actuator 502b fixed on the base 12 of the handler 10, and a rectangular recess in plan view for dropping an IC device is provided on the upper surface side of the buffer stage 502a.
- Four 502c are formed.
- the recess 502c is provided with a suction means (not shown) that can suck the IC device placed in the recess 502c.
- Test unit 30 is a means for performing a test by electrically contacting the pads 2a of the IC device 2 to be tested with the contact pins 301b of the socket 301a of the contact unit 301 after correcting the posture of the IC device 2 to be tested.
- the four pre-test IC devices placed on the loader buffer unit 502 are transported onto the imaging device 320 by the test unit transport device 310 and corrected in posture, and then moved to the contact unit 301 of the test head 300. At the same time, the four are subjected to the test, and then moved again to the unloader buffer unit 602 by the test unit transport device 310 and discharged to the unloader unit 60 by the unloader buffer unit 602.
- two imaging devices 320 are installed on both sides of the contact portion 301 of the test head 300 in the Y-axis direction.
- a CCD camera can be used as the imaging device 320, but the imaging device 320 is not limited to this.
- the imaging device 320 is an apparatus capable of photographing a target object by arranging a number of imaging elements such as a MOS (Metal Oxide Semiconductor) sensor array. I just need it.
- MOS Metal Oxide Semiconductor
- each imaging device 320 is installed in a recess formed in the base 12 of the handler 10, and the IC device 2 positioned above the imaging device 320 is brightened at the upper end of the recess.
- An illumination device 321 that can illuminate is provided.
- Each imaging device 320 is connected to an image processing device (not shown).
- the contact portion 301 of the test head 300 includes four sockets 301 a in this embodiment, and the four sockets 301 a are contact arms of the movable head portion 312 of the test unit transport device 310. They are arranged in an arrangement that substantially matches the 315 arrangement. Further, each socket 301a is provided with a plurality of contact pins 301b arranged so as to substantially match the arrangement of the pads 2a of the IC device 2.
- an opening 11 is formed in the base 12 of the handler 10, and the contact part 301 of the test head 300 protrudes from the opening 11 to push the IC device 2. It is supposed to be applied.
- the test unit transport device 310 is a means for moving the IC device 2 between the loader buffer unit 502 and the unloader buffer unit 602 and the test head 300.
- the test section transport device 310 supports two X-axis direction support members 311a slidable in the Y-axis direction on two Y-axis direction rails 311 fixed on the base 12 of the handler 10.
- a movable head portion 312 is supported at the central portion of each X-axis direction support member 311a, and the movable head portion 312 includes a loader buffer portion 502, an unloader buffer portion 602, and a test head 300. Is the operating range. Note that the movable head unit 312 supported by each of the two X-axis direction support members 311a operating simultaneously on the pair of Y-axis direction rails 311 is controlled so that the mutual operations do not interfere with each other.
- each movable head unit 312 has a first Z-axis direction actuator 313a whose upper end is fixed to the X-axis direction support member 311a and a lower end of the first Z-axis direction actuator 313a.
- a fixed support base 312a four second Z-axis direction actuators 313b whose upper ends are fixed to the support base 312a, and four contact arms 315 fixed to the lower ends of the second Z-axis direction actuators 313b. It has.
- the four contact arms 315 are provided corresponding to the arrangement of the sockets 301a, and a suction portion 317 is provided at the lower end of each contact arm 315.
- Each suction portion 317 is connected to a negative pressure source (not shown), and can suck and hold the IC device 2 by sucking air from the suction portion 317 to generate a negative pressure.
- the IC device 2 can be released by stopping the suction of air from the suction unit 317.
- the four IC devices 2 held by the contact arm 315 can be moved in the Y-axis direction and the Z-axis direction and pressed against the contact unit 301 of the test head 300.
- the contact arm 315 includes an attitude correction mechanism that can correct the attitude of the IC device 2 sucked and held by the sucking unit 317, and includes a base 315a positioned on the upper side and a base 315a positioned on the lower side.
- the movable portion 315b is movable in the X-axis direction, the Y-axis direction, and the planar view rotation direction ( ⁇ direction).
- the contact arm 315 corrects the posture of the IC device 2 held by the contact arm 315 based on the posture correction amount of the IC device 2 calculated by the image processing device from the image data acquired by the imaging device 320.
- the IC device 2 can be pressed against the socket 301a, and the pad 2a of the IC device 2 and the contact pin 301b of the socket 301a can be reliably brought into contact with each other. Details of operations related to shooting to posture correction will be described later.
- the unloader unit 60 is a means for discharging the IC device 2 after the test from the test unit 30 to the IC device storage unit 40.
- the unloader unit 60 mainly includes an unloader unit transport device 601 and two unloader buffer units 602 (in FIG. 1). Two in the positive direction of the X axis).
- the IC device 2 after the test placed on the unloader buffer unit 602 is discharged from the test unit 30 to the unloader unit 60, and the unloader unit transport device 601 sorts the classification tray stocker 402 from the unloader buffer unit 602. Mounted on the tray.
- the unloader buffer unit 602 is a means for reciprocally moving the IC device 2 between the operation range of the test unit transport apparatus 310 and the operation range of the unloader unit transport apparatus 601, and mainly includes the buffer stage 602 a and the X-axis direction actuator. 602b.
- a buffer stage 602a is supported on one end of an X-axis direction actuator 602b fixed on the base 12 of the handler 10, and four recesses 602c for dropping the IC device 2 are provided on the upper surface side of the buffer stage 602a. One is formed.
- the unloader unit conveying device 601 is a means for moving and mounting the IC device 2 on the unloader buffer unit 602 onto the classification tray of the classification tray stocker 402, and mainly includes a Y-axis direction rail 601a and an X-axis direction rail 601b. And a movable head portion 601c and a suction portion 601d.
- the unloader unit transport device 601 has a range including two unloader buffer units 602 and a sorting tray stocker 402 as an operation range.
- the two Y-axis direction rails 601a of the unloader unit conveying device 601 are fixed on the base 12 of the handler 10, and the X-axis direction rail 602b slides in the Y-axis direction between them. It is supported movably.
- the X-axis direction rail 602b supports a movable head portion 601c having a Z-axis direction actuator (not shown) so as to be slidable in the X-axis direction.
- the movable head portion 601c includes four suction portions 601d each having a suction pad at the lower end portion, and the four suction portions 601d are independently raised and lowered in the Z-axis direction by driving the Z-axis direction actuator. be able to.
- the handler 10 includes a storage device that stores model data of various IC devices and a display device that can display images of the IC device 2 and the like (none of which are shown).
- the model data of the IC device includes reference position information of the edge of each pad of the reference IC device.
- the loader transport device 501 sucks the four IC devices 2 on the supply tray located at the uppermost stage of the supply tray stocker 401 of the IC device storage unit 40 by the suction pads 501e of the four suction units 501d. ,Hold.
- the loader unit transport device 501 lifts the four IC devices 2 by the Z-axis direction actuator of the movable head unit 501c while holding the four IC devices 2, and slides the X-axis rail 501b on the Y-axis direction rail 501a.
- the movable head portion 501c is slid on the X-axis direction rail 501b and moved to the loader portion 50.
- the loader unit conveyance device 501 performs positioning above the concave portion 503a of the heat plate 503, extends the Z-axis direction actuator of the movable head unit 501c, releases the suction pad 501e, and attaches the IC device 2 to the heat plate 503. Drop into the recess 503a.
- the loader unit conveyance device 501 holds the four IC devices 2 that have been heated again, and is placed above the one loader buffer unit 502 that is waiting. Move to.
- the loader unit transport device 501 performs positioning above the buffer stage 502a of one waiting loader buffer unit 502, extends the Z-axis direction actuator of the movable head unit 501c, and the suction pad 501e of the suction unit 501d
- the IC device 2 held by suction is released, and the IC device 2 is placed in the recess 502c of the buffer stage 502a.
- the suction means provided in the recess 502c sucks and holds the IC device 2 placed in the recess 502c.
- the loader buffer unit 502 extends the X-axis direction actuator 502b while adsorbing and holding the four IC devices 2 in the recess 502c of the buffer stage 502a, and the test unit 30 from the operating range of the loader unit transport device 501 of the loader unit 50.
- the four IC devices 2 are moved to the operation range of the test unit transport apparatus 310.
- the movable head section 312 of the test section transport apparatus 310 is mounted on the recess 502c of the buffer stage 502a. It moves on the IC device 2 placed (STEP01). Then, the first Z-axis direction actuator 313a of the movable head unit 312 extends, and is positioned in the concave portion 502c of the buffer stage 502a of the loader buffer unit 502 by the suction units 317 of the four contact arms 315 of the movable head unit 312. The four IC devices 2 are sucked and held (STEP 02). At this time, it is desirable that the suction in the recess 502c of the buffer stage 502a is released.
- the movable head unit 312 holding the four IC devices 2 is raised by the first Z-axis direction actuator 313a of the movable head unit 312.
- test unit conveyance device 310 slides the X-axis direction support member 311 a that supports the movable head unit 312 on the Y-axis direction rail 311, and holds the four by the contact arm 315 of the movable head unit 312.
- the IC device 2 is conveyed above the imaging device 320 (STEP 03; see FIG. 3).
- the imaging device 320 images the side (bottom surface) on which the pad 2a of the IC device 2 is present (STEP 04). At this time, the illumination device 321 illuminates the IC device 2 brightly.
- the image processing apparatus first extracts an edge (bright and dark boundary) extending in the X-axis direction from the image data of the IC device 2 photographed by the imaging device 320 (STEP 05). Specifically, scanning in the Y-axis direction is performed to extract edges that change from dark to light and edges that change from light to dark. Edges extending in the X-axis direction in the IC device 2 are shown in FIG. In FIG. 6, e1 is an edge that changes from dark to light, and e2 is an edge that changes from light to dark. FIG. 7 shows an image from which edges are extracted. In FIG. 7, E1 indicates an edge e1 that changes from dark to bright and is displayed in black. In FIG. 7, E2 indicates an edge e2 that changes from light to dark, and is displayed in white. The color of the background (portion other than E1 and E2) of the image is gray.
- the image processing apparatus binarizes the edge data extracted above (STEP 06). Specifically, binarization for extracting the black portion (E1) and binarization for extracting the white portion (E2) from the image extracted from the edge shown in FIG. At this time, binarization for extracting a black portion and binarization for extracting a white portion may be performed separately to obtain two binary images, or may be performed simultaneously to obtain one binary image. . However, in the latter case, if the pitch of the pads 2a of the IC device 2 is fine, the adjacent edge portions may be in contact with each other and the edge position may not be specified, and the former also supports a finer pitch. There is an advantage that you can. Through step 05 and step 06, the position of the edge of the pad 2a arranged in the Y-axis direction in the IC device 2 can be acquired.
- the image processing apparatus extracts an edge extending in the Y-axis direction from the image data of the IC device 2 captured by the imaging apparatus 320 (STEP 07). Specifically, scanning in the X-axis direction is performed to extract edges that change from dark to light and edges that change from light to dark. Edges extending in the Y-axis direction in the IC device 2 are shown in FIG. In FIG. 8, e3 is an edge that changes from dark to light, and e4 is an edge that changes from light to dark.
- FIG. 9 shows an image from which edges are extracted. In FIG. 9, E3 indicates an edge e3 that changes from dark to bright and is displayed in black. In FIG. 9, E4 indicates an edge e4 that changes from light to dark, and is displayed in white. The color of the background (portion other than E3 and E4) of the image is gray.
- the image processing apparatus binarizes the edge data extracted above (STEP 08). Specifically, binarization for extracting the black portion (E3) and binarization for extracting the white portion (E4) from the image extracted from the edge shown in FIG. At this time, binarization for extracting a black portion and binarization for extracting a white portion may be performed separately to obtain two binary images, or may be performed simultaneously to obtain one binary image. However, the former is preferable from the viewpoint of accuracy.
- Step 07 and Step 08 the position of the edge of the pad 2a arranged in the X-axis direction in the IC device 2 can be acquired.
- the image processing apparatus specifies the position of the edge of each pad 2a of the IC device 2 from the binary image acquired in step 06 and the binary image acquired in step 08 (STEP09). Specifically, from the two binary images acquired in Step 06, the extra portions (portions corresponding to the upper white portion and the lower black portion in FIG. 7) are ignored, and acquired in Step 08. From each of the two binary images, each pad 2a of the IC device 2 is obtained from data obtained by adding an extra portion (the portion corresponding to the white portion on the left side and the black portion on the right side in FIG. 9). Specify the position of the edge.
- the image processing apparatus reads model data (reference position information of the edge of each pad of the IC device serving as a reference) from the storage device (STEP 10). Then, the read reference position information of the edge of each pad is compared with the information of the position of the edge of each pad specified in step 09, and the positional deviation amount of the IC device 2 held by the contact arm 315 is determined. Based on the calculation, the correction amount ( ⁇ x, ⁇ y, ⁇ ) of the attitude of the IC device 2 is calculated (STEP 11).
- the contact arm 315 of the movable head unit 312 moves the movable unit 315b based on the calculated correction amount ( ⁇ x, ⁇ y, ⁇ ) of the IC device 2 to correct the posture of the IC device 2 (STEP 12).
- test unit conveyance device 310 slides the X-axis direction support member 311 a that supports the movable head unit 312 on the Y-axis direction rail 311, and holds it by the suction unit 317 of the contact arm 315 of the movable head unit 312.
- the four IC devices 2 are transported above the four sockets 301a in the contact portion 301 of the test head 300 (STEP 13).
- the movable head unit 312 extends the first Z-axis direction actuator 313a and the second Z-axis direction actuator 313b holding the IC device 2 (see FIG. 4), and the pad 2a of each IC device 2 is
- the contact pin 301b of the socket 301a is brought into contact (STEP 14). During this contact, an electrical signal is transmitted / received via the contact pin 301b, whereby the test of the IC device 2 is performed.
- the test unit transport device 310 raises the IC device 2 after the test by contraction of the first Z-axis direction actuator 313a and the second Z-axis direction actuator 313b of the movable head unit 312.
- the X-axis direction support member 311a that supports the movable head unit 312 is slid on the Y-axis direction rail 311 so that the four IC devices 2 held by the contact arm 315 of the movable head unit 312 are related to the test unit. It is transported above the buffer stage 602a of one unloader buffer unit 602 that is waiting within the operation range of the transport device 310 (STEP 15).
- the movable head unit 312 extends the first Z-axis direction actuator 313a and releases the suction pad 317c to drop the four IC devices into the recess 602c of the buffer stage 602a.
- the unloader buffer unit 602 drives the X-axis actuator 602b while mounting the four IC devices after the test, and from the operating range of the test unit transport device 310 of the test unit 30, the unloader unit transport device 601 of the unloader unit 60.
- the IC device is moved to the operation range.
- the Z-axis direction actuator of the movable head unit 601c of the unloader unit transport device 601 located above the unloader buffer unit 602 is extended, and the four suction units 601d of the movable head unit 601c are used to expand the unloader buffer unit 602.
- the four IC devices after the test located in the recess 602c of the buffer stage 602a are sucked and held.
- the unloader unit conveyance device 601 lifts the four IC devices by the Z-axis direction actuator of the movable head unit 601c while holding the four IC devices after the test, and slides the X-axis direction rail 601b on the Y-axis direction rail 601a.
- the movable head unit 601c is slid on the X-axis direction rail 601b and moved onto the classification tray stocker 402 of the IC device storage unit 40. Then, according to the test result of each IC device, each IC device is mounted on the classification tray located at the uppermost stage of each classification tray stocker 402.
- the position of the IC device 2 held by the contact arm 315 can be accurately identified, and the posture correction of the IC device 2 with respect to the socket 301a can be accurately performed.
- the conventional handler has only one position information (center coordinate) for one pad 2a in the IC device 2, but the handler 10 according to the present embodiment has two edges for one pad 2a. Therefore, the position of the IC device 2 can be specified with higher accuracy.
- the positions of the edges of some pads 2a are specified without specifying the positions of the edges of all the pads 2a of the IC device 2. You may do it.
- the edge position of the identified pad 2a of the IC device 2 is used for correcting the position of the IC device 2.
- the present invention is not limited to this, and is used for detecting a defect in the pad 2a. May be.
- the pad 2a it can be detected that it is defective (for example, the pad 2a is formed to be shifted, the size of the pad 2a is abnormal, the pad 2a is dirty, etc.).
- Such an IC device 2 can be processed in advance such as being removed from the test target.
- the position of the edge is specified from the extracted edge.
- the present invention is not limited to this, and the interval between the edges may be directly detected from the extracted edge.
- Device 2 (terminal) dimensions can be inspected.
- reference interval information of the edge of the pad 2a of the IC device 2 serving as a reference is stored in advance.
- the edge of the pad 2a of the IC device 2 is extracted from the image data photographed by the imaging device 320, and the edge interval is detected.
- the dimension of the IC device 2 can be inspected by reading the stored reference interval information of the edge and comparing the reference interval information with the detected edge interval information. That is, when the difference between the reference interval information and the detected edge interval information is greater than or equal to a predetermined value, the abnormality of the pad 2a of the IC device 2 (for example, the pad 2a having an abnormal size is dirty) Etc.) can be detected.
- the difference between the reference interval information and the detected edge interval information is greater than or equal to a predetermined value. Can detect that the external dimension of the IC device 2 is abnormal or the type of the IC device 2 to be tested is wrong.
- the present invention is useful in an electronic component handling apparatus for accurately making a test by bringing an electronic component having a terminal at an end portion such as QFN into contact with a contact portion accurately.
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Abstract
Description
2…ICデバイス(電子部品)
2a…パッド(端子)
10…電子部品ハンドリング装置(ハンドラ)
30…テスト部
301…コンタクト部
301a…ソケット
301b…コンタクトピン
310…テスト部搬送装置
315…コンタクトアーム
320…撮像装置
50…ローダ部
60…アンローダ部
図1は本発明の一実施形態に係るハンドラの平面図、図2は同実施形態に係るハンドラの部分断面側面図(図1におけるI-I断面図)、図3は同ハンドラで用いられるコンタクトアーム及び撮像装置の側面図、図4は同ハンドラで用いられるコンタクトアーム及びコンタクト部の側面図である。
ICデバイス格納部40は、試験前及び試験後のICデバイスを格納する手段であり、主に供給トレイ用ストッカ401と、分類トレイ用ストッカ402と、空トレイ用ストッカ403と、トレイ搬送装置404とから構成される。
ローダ部50は、試験前のICデバイスをICデバイス格納部40の供給トレイ用ストッカ401からテスト部30に供給するための手段であり、主にローダ部搬送装置501と、2つのローダ用バッファ部502(図1においてX軸負方向の2つ)と、ヒートプレート503とから構成される。
テスト部30は、被試験ICデバイス2の姿勢を補正した上で被試験ICデバイス2のパッド2aをコンタクト部301のソケット301aのコンタクトピン301bに電気的に接触させることによりテストを行う手段であり、主にテスト部搬送装置310と、撮像装置320とを備えて構成されている。
アンローダ部60は、試験後のICデバイス2をテスト部30からICデバイス格納部40に排出するための手段であり、主にアンローダ部搬送装置601と、2つのアンローダ用バッファ部602(図1においてX軸正方向の2つ)とから構成される。
最初に、ローダ部搬送装置501が、4つの吸着部501dの吸着パッド501eにより、ICデバイス格納部40の供給トレイ用ストッカ401の最上段に位置する供給トレイ上の4つのICデバイス2を吸着し、保持する。
上記のようにICデバイス2が載置されたバッファステージ502aがテスト部搬送装置310の動作範囲内に移動してきたら、テスト部搬送装置310の可動ヘッド部312は、バッファステージ502aの凹部502cに載置されたICデバイス2上に移動する(STEP01)。そして、可動ヘッド部312の第1のZ軸方向アクチュエータ313aが伸長し、可動ヘッド部312の4つのコンタクトアーム315の吸着部317により、ローダ用バッファ部502のバッファステージ502aの凹部502cに位置する4つのICデバイス2を吸着し、保持する(STEP02)。なお、この時バッファステージ502aの凹部502cにおける吸着は解放されるのが望ましい。
Claims (27)
- 端縁部に端子を有する電子部品の電気的特性を試験するために、前記電子部品をコンタクト部に搬送し、当該コンタクト部に電気的に接続させるための電子部品ハンドリング装置であって、
所定の電子部品の端子を撮影する撮像装置と、
前記撮像装置で撮影された画像データから、前記電子部品の端子のエッジを抽出し、前記エッジの位置を特定するエッジ検出手段と
を備えたことを特徴とする電子部品ハンドリング装置。 - 前記エッジ検出手段は、前記電子部品の端子が並んでいる方向と交差する方向に存在する端子のエッジを抽出することを特徴とする請求項1に記載の電子部品ハンドリング装置。
- 前記電子部品は、X軸方向の端縁部およびY軸方向の端縁部に端子を有するものであり、
前記エッジ検出手段は、前記電子部品のX軸方向に並んでいる端子のエッジを抽出するとともに、前記電子部品のY軸方向に並んでいる端子のエッジを抽出することを特徴とする請求項1または2に記載の電子部品ハンドリング装置。 - 前記エッジ検出手段は、前記電子部品の端子を所定方向にスキャンして、明から暗に変化するエッジと、暗から明に変化するエッジとを抽出することを特徴とする請求項1~3のいずれかに記載の電子部品ハンドリング装置。
- 前記エッジ検出手段は、前記抽出したエッジを二値化処理した上で、前記端子のエッジの位置を特定することを特徴とする請求項4に記載の電子部品ハンドリング装置。
- 前記二値化処理は、明から暗に変化するエッジと、暗から明に変化するエッジとを一度に抜き出して二値化することを特徴とする請求項5に記載の電子部品ハンドリング装置。
- 前記二値化処理は、明から暗に変化するエッジと、暗から明に変化するエッジとを別々に抜き出して二値化することを特徴とする請求項5に記載の電子部品ハンドリング装置。
- 前記電子部品は、X軸方向の端縁部またはY軸方向の端縁部に端子を有するものであり、
前記スキャンは、前記電子部品の端子が並んでいる方向に沿って行うことを特徴とする請求項4~7のいずれかに記載の電子部品ハンドリング装置。 - 前記電子部品は、X軸方向の端縁部およびY軸方向の端縁部に端子を有するものであり、
前記スキャンは、X軸方向およびY軸方向に行うことを特徴とする請求項4~7のいずれかに記載の電子部品ハンドリング装置。 - 前記電子部品ハンドリング装置は、電子部品を保持し前記コンタクト部に押し付けることのできる搬送装置を備えており、
前記撮像装置は、前記搬送装置に保持された試験前の電子部品の端子を撮影することを特徴とする請求項1~9のいずれかに記載の電子部品ハンドリング装置。 - 基準となる電子部品の端子のエッジの基準位置情報を記憶する記憶装置と、
前記記憶装置から前記エッジの基準位置情報を読み出し、当該読み出したエッジの基準位置情報と、前記エッジ検出手段によって特定した前記エッジの位置の情報とを比較し、前記所定の電子部品の位置ずれ量を算出する位置ずれ検出手段と
をさらに備えたことを特徴とする請求項1~10のいずれかに記載の電子部品ハンドリング装置。 - 前記電子部品ハンドリング装置は、電子部品を保持し前記コンタクト部に押し付けることのできる搬送装置を備えており、前記搬送装置は、当該搬送装置が保持している電子部品の姿勢を補正する姿勢補正装置を備えており、
前記撮像装置は、前記搬送装置に保持された試験前の電子部品の端子を撮影し、
前記搬送装置は、前記位置ずれ検出手段によって検出した前記電子部品の位置ずれ量に基づいて、当該搬送装置が保持している電子部品の姿勢を補正する
ことを特徴とする請求項11に記載の電子部品ハンドリング装置。 - 基準となる電子部品の端子のエッジの基準位置情報を記憶する記憶装置と、
前記記憶装置から前記エッジの基準位置情報を読み出し、当該読み出したエッジの基準位置情報と、前記エッジ検出手段によって特定した前記エッジの位置の情報とを比較し、もって前記所定の電子部品の端子不良を検出する端子不良検出手段と
をさらに備えたことを特徴とする請求項1~12のいずれかに記載の電子部品ハンドリング装置。 - 端縁部に端子を有する電子部品の電気的特性を試験するために、前記電子部品をコンタクト部に搬送し、当該コンタクト部に電気的に接続させるための電子部品ハンドリング装置であって、
所定の電子部品の端子を撮影する撮像装置と、
前記撮像装置で撮影された画像データから、前記電子部品の端子のエッジを抽出し、前記端子のエッジ間隔を検出するエッジ間隔検出手段と、
基準となる電子部品の端子のエッジの基準間隔情報を記憶する記憶装置と、
前記記憶装置から前記エッジの基準間隔情報を読み出し、当該読み出したエッジの基準間隔情報と、前記エッジ間隔検出手段によって検出した前記エッジ間隔の情報とを比較し、もって前記所定の電子部品の寸法を検査する寸法検査手段と
を備えたことを特徴とする電子部品ハンドリング装置。 - 電子部品ハンドリング装置において、端縁部に端子を有する電子部品の位置を検出する方法であって、
電子部品の端子を撮影する第1ステップと、
前記第1ステップで撮影した画像データから、前記電子部品の端子のエッジを抽出し、前記エッジの位置を特定する第2ステップと
を備えたことを特徴とする位置検出方法。 - 前記第2ステップにおいて、前記電子部品の端子が並んでいる方向と交差する方向に存在する端子のエッジを抽出することを特徴とする請求項15に記載の位置検出方法。
- 前記電子部品は、X軸方向の端縁部およびY軸方向の端縁部に端子を有するものであり、
前記第2ステップは、前記電子部品のX軸方向に並んでいる端子のエッジを抽出するステップと、前記電子部品のY軸方向に並んでいる端子のエッジを抽出するステップとを含むことを特徴とする請求項15または16に記載の位置検出方法。 - 前記第2ステップにおいて、前記電子部品の端子を所定方向にスキャンして、明から暗に変化するエッジと、暗から明に変化するエッジとを抽出することを特徴とする請求項15~17のいずれかに記載の位置検出方法。
- 前記第2ステップにおいて、前記抽出したエッジを二値化処理した上で、前記端子のエッジの位置を特定することを特徴とする請求項18に記載の位置検出方法。
- 前記二値化処理は、明から暗に変化するエッジと、暗から明に変化するエッジとを一度に抜き出して二値化することを特徴とする請求項19に記載の位置検出方法。
- 前記二値化処理は、明から暗に変化するエッジと、暗から明に変化するエッジとを別々に抜き出して二値化することを特徴とする請求項19に記載の位置検出方法。
- 前記電子部品は、X軸方向の端縁部またはY軸方向の端縁部に端子を有するものであり、
前記スキャンは、前記電子部品の端子が並んでいる方向に沿って行うことを特徴とする請求項18~21のいずれかに記載の位置検出方法。 - 前記電子部品は、X軸方向の端縁部およびY軸方向の端縁部に端子を有するものであり、
前記スキャンは、X軸方向およびY軸方向に行うことを特徴とする請求項18~21のいずれかに記載の位置検出方法。 - 電子部品ハンドリング装置において、端縁部に端子を有する電子部品の位置ずれを検出する方法であって、
基準となる電子部品の端子のエッジの基準位置情報を記憶する第1ステップと、
所定の電子部品の端子を撮影する第2ステップと、
前記第2ステップで撮影した画像データから、前記電子部品の端子のエッジを抽出し、前記エッジの位置を特定する第3ステップと、
前記記憶装置から前記エッジの基準位置情報を読み出し、当該読み出したエッジの基準位置情報と、前記第3ステップにおいて特定した前記エッジの位置の情報とを比較し、前記所定の電子部品の位置ずれ量を算出する第4ステップと
を備えたことを特徴とする位置ずれ検出方法。 - 電子部品ハンドリング装置において、搬送装置が保持している、端縁部に端子を有する電子部品の姿勢を補正する方法であって、
基準となる電子部品の端子のエッジの基準位置情報を記憶する第1ステップと、
前記搬送装置が保持している電子部品の端子を撮影する第2ステップと、
前記第2ステップで撮影した画像データから、前記電子部品の端子のエッジを抽出し、前記エッジの位置を特定する第3ステップと、
前記記憶装置から前記エッジの基準位置情報を読み出し、当該読み出したエッジの基準位置情報と、前記第3ステップにおいて特定した前記エッジの位置の情報とを比較し、前記搬送装置が保持している電子部品の位置ずれ量を算出する第4ステップと、
前記第4ステップによって検出した前記電子部品の位置ずれ量に基づいて、前記搬送装置が保持している電子部品の姿勢を補正する第5ステップと
を備えたことを特徴とする姿勢補正方法。 - 電子部品ハンドリング装置において、端縁部に端子を有する電子部品の端子不良を検出する方法であって、
基準となる電子部品の端子のエッジの基準位置情報を記憶する第1ステップと、
所定の電子部品の端子を撮影する第2ステップと、
前記第2ステップで撮影した画像データから、前記電子部品の端子のエッジを抽出し、前記エッジの位置を特定する第3ステップと、
前記記憶装置から前記エッジの基準位置情報を読み出し、当該読み出したエッジの基準位置情報と、前記第3ステップにおいて特定した前記エッジの位置の情報とを比較することにより、前記所定の電子部品の端子不良を検出する第4ステップと
を備えたことを特徴とする端子不良検出方法。 - 電子部品ハンドリング装置において、端縁部に端子を有する電子部品の寸法を検査する方法であって、
基準となる電子部品の端子のエッジの基準間隔情報を記憶する第1ステップと、
所定の電子部品の端子を撮影する第2ステップと、
前記第2ステップで撮影した画像データから、前記電子部品の端子のエッジを抽出し、前記端子のエッジ間隔を検出する第3ステップと、
前記記憶装置から前記エッジの基準間隔情報を読み出し、当該読み出したエッジの基準間隔情報と、前記第3ステップにおいて検出した前記エッジ間隔の情報とを比較することにより、前記所定の電子部品の寸法を検査する第4ステップと
を備えたことを特徴とする電子部品の寸法検査方法。
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US12/864,742 US20100310151A1 (en) | 2008-01-29 | 2008-12-22 | Electronic device handling apparatus and electronic device position detection method |
JP2009551408A JPWO2009096119A1 (ja) | 2008-01-29 | 2008-12-22 | 電子部品ハンドリング装置および電子部品の位置検出方法 |
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JP (1) | JPWO2009096119A1 (ja) |
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WO (1) | WO2009096119A1 (ja) |
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KR20180113916A (ko) * | 2017-04-07 | 2018-10-17 | 가부시키가이샤 아드반테스트 | 전자 부품의 자세 검출 장치 및 자세 검출 방법 |
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JP2013053991A (ja) * | 2011-09-06 | 2013-03-21 | Seiko Epson Corp | ハンドラー及び部品検査装置 |
EP3075702B1 (en) * | 2015-03-31 | 2021-02-17 | OSAI A.S. S.p.A. | Testing method and unit for micro electromechanical systems |
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JPWO2009096119A1 (ja) | 2011-05-26 |
TW200942838A (en) | 2009-10-16 |
US20100310151A1 (en) | 2010-12-09 |
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