WO2005013351A1 - ダイボンダにおけるワーク認識方法およびダイボンダ - Google Patents
ダイボンダにおけるワーク認識方法およびダイボンダ Download PDFInfo
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- WO2005013351A1 WO2005013351A1 PCT/JP2003/009763 JP0309763W WO2005013351A1 WO 2005013351 A1 WO2005013351 A1 WO 2005013351A1 JP 0309763 W JP0309763 W JP 0309763W WO 2005013351 A1 WO2005013351 A1 WO 2005013351A1
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- Prior art keywords
- bonding
- work
- row
- image
- die bonder
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- 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
- H01L21/683—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 for supporting or gripping
- H01L21/6835—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 for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
- H01L2221/68336—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding involving stretching of the auxiliary support post dicing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/1901—Structure
- H01L2924/1904—Component type
- H01L2924/19041—Component type being a capacitor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
Definitions
- the present invention relates to a method for recognizing a work in a die bonder and a die bonder using the method. For example, a bonding material is applied to a substrate having a large number of bonding areas (islands) to form a semiconductor chip.
- the present invention relates to a work recognition method and a die bonder in a die bonder suitable for a die bonder to be bonded.
- a semiconductor device bonds a back surface of a semiconductor chip (die) to a board such as a lead frame or a printed board through a bonding material such as soft solder, hard solder, silver paste, or resin. ).
- a loader 120, a transfer device 130, and an unloader 140 are arranged, and a transfer device 150 for one substrate 150 from the loader 120.
- the substrate 150 is transported in a predetermined direction on the rail 1 3 1 of the transport device 130, and the bonding area 150 of the substrate 150 is transferred at the bonding material application position PS during the transport.
- the semiconductor chip (die) 170 is bonded through the bonding material 160 at the bonding position PB, and is accommodated in a magazine or the like with the unloader 140 at the bonding position PB. ing.
- a first image recognition device 180 is disposed above the bonding material application position PS, and a second image recognition device 190 is disposed above the bonding position PB.
- the image recognition of the bonding material application state by the first image recognition device 180 is performed by the image recognition device, and the image recognition of the bonding state of the semiconductor chip by the second image recognition device 190 is performed by the monitor 210. Ibonda has been proposed. .
- an image recognition device is arranged above the pickup position of the semiconductor chip, and the image recognition device recognizes the image of the semiconductor chip to be picked up and picks up the semiconductor chip.
- a camera using an image sensor of about 1.3 million pixels called a megapixel camera instead of a camera having a general resolution (about 300,000 pixels) is used.
- CCD cameras a CCD camera
- a CCD camera Has a low resolution of about 300,000 pixels, so that, for example, all the bonding areas 151 in each row in the width direction on a substrate 150 such as a lead frame or printed circuit board can be image-recognized with high accuracy.
- a moving mechanism for moving the supporting members of the CCD cameras 180 and 190 in the width direction of the substrate 150 is indispensable, and the supporting mechanism of the camera becomes complicated and large, and becomes expensive. Because the CCD camera 180 and 190 need to move in the width direction, and because the image shakes due to the vibration caused by the movement of the support member need to wait for image recognition to stop, the image It takes a long time to recognize and process, and cannot speed up the die bonder There was a problem. Alternatively, a vibration prevention mechanism is required to prevent vibration, and the die bonder becomes more expensive.
- the present invention provides a work recognition method and a work recognition method for a die bonder that can perform image recognition in a shorter time and with higher accuracy in a bonding area of a work such as a lead frame or a printed circuit board. It is an object of the present invention to provide a die bonder using the method. Means for Solving the Problems
- the work recognizing method according to the present invention is arranged such that an image recognizing means is arranged above a transfer path of a work having a large number of bonding areas in a die bonder.
- a high-performance camera is fixedly arranged as the image recognizing means, and all the bonding areas in at least one row in the width direction of the workpiece are collectively image-recognized.
- the above-mentioned “high-performance camera” refers to a camera capable of dynamically and programmable imaging using only a part of the sensor light receiving element.
- the number of pixels does not matter here because the necessary conditions vary depending on the target work. In other words, the total number of poisons is not a problem, and it is sufficient that the entire area of one row of the work can be imaged at a sufficient resolution at the same time. Does not. However, considering the function that can collectively capture the entire area of at least one row of the work from the required usage purpose, it must be a high-resolution camera.
- all the bonding areas in at least one row in the width direction of the workpiece are collectively image-recognized
- the work recognition method of the present invention is preferably arranged such that after the images of at least one row of all the bonding regions in the width direction of the work are collectively captured by the high-performance camera, In both of the embodiments, the image taken in a lump is processed using an idle time until the image of all the bonding regions in one row is recognized.
- the high-performance camera collectively captures at least one row of all bonding regions in the width direction of the substrate, and then all of at least one row in the width direction of the substrate.
- the present invention is characterized in that the state of each bonding area is inspected by dividing and enlarging the collectively picked-up image by utilizing the idle time until the bonding area is collectively image-recognized.
- the die bonder of the present invention collectively performs image recognition on all bonding regions in at least one row in the width direction of the work above the bonding material application position in the work conveyance path having a large number of bonding regions.
- the first high-performance camera is fixedly arranged, and the second high-performance camera that recognizes all the bonding areas in at least one row in the width direction of the workpiece at a position above the bonding position in the workpiece transfer path It is characterized by being fixedly arranged.
- the die bonder of the present invention by the first high-performance camera, collectively performs image recognition of a bonding material application state in all bonding regions in at least one row in a width direction of the work, and a defective bonding material application region. Is stored, and the semiconductor chip is bonded by skipping the defective bonding material application region at the next bonding position. Effects of the Invention According to the above-described work recognition method, it is possible to collectively perform image recognition of all bonding regions in at least one row in the width direction of a work such as a lead frame or a printed circuit board.
- the state before and / or after the application of the bonding material in all bonding areas in at least one row in the width direction is collectively image-recognized. You can.
- image recognition of the state before bonding and / or the state after bonding of the semiconductor chip in all bonding regions in at least one row in the width direction is performed collectively. Can be. Therefore, using a conventional CCD camera, for example, at the bonding material application position in the work transport path, only a part of the entire bonding area in the nth column of the work before the bonding material is applied is applied.
- the CCD camera After the image recognition of the state after application and the state after application, the CCD camera is moved in the width direction of the work to sequentially recognize the state before application of the bonding material and the state after application in the other bonding areas in the same nth column.
- the time required for image recognition is significantly reduced as compared with the case of using a computer.
- the CCD camera is moved in the blank width direction, and the state before bonding and the state after bonding of the semiconductor chip in the other bonding area of the same n-th column are sequentially compared with those for image recognition.
- the time required for image recognition is significantly reduced.
- the work recognition method of the present invention after collectively capturing images of all the bonding areas in at least one row in the width direction of the work, all the bonding areas in the next row in the width direction of the work are imaged.
- the collectively captured images are processed using the idle time generated before the recognition, so that the time required for image capturing and image processing is greatly reduced, and the speed of the die bonder can be increased. .
- the work recognition method of the present invention after images of all the bonding areas in at least one row in the width direction of the work are collectively taken, then all the bonding areas in at least one row in the width direction of the work are obtained. Utilizing the idle time that occurs until the area is image-recognized, the collectively captured image is divided and enlarged to inspect the state of the bonding area of the workpiece, so that inspection with a more accurate image is performed. Can be performed, and the inspection accuracy of the die bonder can be improved.
- the state before and / or after the application of the bonding material in at least one row of the bonding area in the width direction of the workpiece is collectively performed by the first high-performance camera.
- the second high-performance camera it is possible to collectively image the state before bonding and the state after Z or bonding of the semiconductor chip in at least one row of bonding areas in the width direction of the workpiece.
- the bonding area is at the correct position before applying the bonding material on the front side of the work transfer path, and if the bonding area is displaced from the correct position Can automatically adjust the position of the bonding area by automatically adjusting the work driving means on the transport path based on the inspection result.
- the application state of the bonding material for example, the presence or absence of the bonding material, the application position, the application amount, and the like are inspected, and if any, the application state of the bonding material is defective, the inspection is performed. Based on the results, it is possible to automatically correct the application conditions of the bonding material, store the defective position in a storage device, and use the stored information in the next semiconductor chip bonding process. .
- the bonding area before bonding the semiconductor chip, it is possible to inspect whether the bonding area is at the correct position on the front side of the work transfer path, and if the bonding position is deviated from the correct position.
- the position of the bonding area can be corrected by automatically adjusting the work driving means on the transport path based on the inspection result.
- the bonding state of the semiconductor chip for example, the presence or absence of the die, the die position, the die chipping, the state of the bonding material protruding, and the like, are image-recognized. If so, the bonding conditions can be automatically corrected, the defective position can be stored in a storage device, and the stored information can be used in the next process.
- FIG. 1 is a schematic plan view of a die bonder employing the work recognition method of the present invention.
- FIG. 2 is a left longitudinal sectional view of the die bonder of FIG.
- Fig. 3 is an enlarged front view showing the arrangement of the first and second high-performance cameras in the die bonder of Fig. 1.
- FIG. 4A is a plan view of an example of a substrate used in the die bonder of FIG.
- FIG. 4 (B) is a front view of the substrate of FIG. 4 (A).
- FIG. 5A is a schematic front sectional view of an example of the loader in the die bonder of FIG.
- FIG. 5B is a schematic front view of a different example of the loader in the die bonder of FIG.
- FIG. 6 is a schematic enlarged side sectional view of a bonding material applying device in the die bonder of FIG.
- FIG. 7 is an explanatory diagram of the operation of the bonding head in the die bonder of FIG.
- FIG. 8 (A) to 8 (C) are schematic longitudinal sectional views of a manufacturing process of a semiconductor chip assembly arranged at a pickup position of a semiconductor chip in the die bonder of FIG.
- FIG. 9 is a schematic front sectional view of the unbinder in the die bonder of FIG.
- FIG. 10 is a front view showing the arrangement of the upper and lower belts and burries of the transfer device in the die bonder of FIG.
- FIG. 11 (A) is a rear view of a driving pulley portion of the transfer device in the die bonder of FIG. 1.
- FIG. 11 (B) is a right side view of the drive pulley portion of FIG. 11 (A).
- FIG. 12 (A) is a schematic front view of a vertical drive pulley, a vertical driven pulley, and an upper feed pulley portion of the transfer device in the die bonder of FIG.
- FIG. 12 (B) is a schematic plan view of the upper feed pulley portion of FIG. 12 (A).
- FIG. 12 (C) is an enlarged side sectional view of a portion A in FIG.
- FIG. 12 (D) is an enlarged sectional side view of a portion B in FIG.
- FIG. 13 is a schematic perspective view for explaining the work recognition method of the present invention.
- Fig. 14 (A) shows the upper and lower pelts and vertical feeder when a board with a small thickness is supplied.
- -It is an enlarged front view of ri.
- Fig. 14 (B) shows the upper and lower belts and upper and lower feed rollers when a board with a large thickness is supplied.
- FIG. 15A is a schematic front view of a conventional die bonder.
- FIG. 15 (B) is a schematic plan view of the die bonder of FIG. 15 (A).
- FIG. 16 is a schematic perspective view illustrating a conventional image recognition method of a die bonder. BEST MODE FOR CARRYING OUT THE INVENTION
- an embodiment of a die bonder adopting a work recognition method of the present invention will be described with reference to the drawings.
- the die bonder 10 includes a loader 20 that supplies a substrate 1 having a large number of bonding areas such as a lead frame and a printed circuit board, which are examples of a work, and a transfer device 70 that transports the substrate 1.
- the bonding material application device 30 that applies the bonding material to the substrate 1 at the front side bonding material application position PS in the middle of the conveyance device 70, and the front bonding position PB in the middle of the conveyance device 70
- a bonding head 40 for bonding a semiconductor chip (die) to the substrate 1 on which the bonding material is applied; an unloader 50 for receiving the substrate 1 on which the semiconductor chip is bonded;
- a high-performance camera for example, a CMOS camera 100, a monitor 101 thereof, and a second high-performance camera, for example, a CMOS camera, which is fixed above the bonding head 40.
- La 110, and a the motor two evening 111 are examples of the bonding head 40.
- illuminating means 103 and 113 in which a large number of light emitting diodes are arranged in a matrix are arranged, and a first CMOS camera 100 and a second CMOS camera 100 are arranged.
- the illuminating means 103 and 113 may be singly illuminated from one direction, but as shown in FIG. 3, when illuminating from a plurality of directions by a plurality of illuminating means, shadows due to unevenness of the subject are not formed, Even clearer image recognition can be performed.
- FIG. 3 when illuminating from a plurality of directions by a plurality of illuminating means, shadows due to unevenness of the subject are not formed, Even clearer image recognition can be performed.
- the bonding material application device 30 at the bonding material application position PS is not shown, and only one illuminating means 103 is shown. However, as with the bonding position PB, a plurality of illuminating means 103 are used. It may be arranged.
- the substrate 1 has a length dimension L, a width dimension W, and a thickness dimension. Is rectangular and flat, and has a large number of semiconductor chip bonding areas 2 in the vertical and horizontal directions, and at least at one end in the width direction, along the length direction, no gripping area 2 Has three.
- the gripping region 3 does not require a feed claw hole as in the conventional feed claw method, but a substrate having a conventional feed claw hole can be used without any problem.
- the loader 20 stores a large number of substrates 1 and supplies them one by one to the transfer device 70.
- a magazine 22 in which the substrates 1 are stored horizontally at a predetermined pitch in the vertical direction is placed, and the magazine 22 is intermittently lowered (or raised) one pitch at a time by an elevator 21.
- a method of sequentially feeding the substrate 1 below (or above) the magazine 22 by the pressing portion 24 of 23 may be used.
- FIG. 5 (B) a large number of substrates 1 are stacked, and one or a plurality of suction heads 25 adsorb one by one from the upper substrate 1 and transport them. It may be of the type that supplies it to the device 70.
- the transfer device 70 hold and transfer the holding area 3 of the substrate 1 in FIG. 4. The detailed configuration and operation will be described later.
- the bonding material application device 30 accommodates the bonding material 33 in a syringe 32 attached to a mounting member 31 and uses a compressed gas (air, nitrogen) 34
- a predetermined amount of the bonding material 33 is discharged from 35 and applied to the substrate 1 by a predetermined amount. It can be moved intermittently in the width direction (X direction) of the substrate 1 by an X-axis drive module (not shown).
- the bonding material 33 is sequentially applied to the bonding regions 2 arranged in a line along the width direction of the substrate 1.
- the bonding material 33 may be simultaneously supplied to the plurality of bonding regions 2 in the width direction.
- a bonding head 40 to be described later sequentially bonds the semiconductor chip to each bonding area 2 arranged in the width direction of the substrate 1, a single nozzle is sufficient for practical use. .
- the mounting member 31 to which the syringe 32 is mounted may be configured to be movable in the direction of movement 1 by a Y-axis drive motor (not shown).
- a Y-axis drive motor not shown.
- the first C When observing the state of the bonding area 2 before applying the bonding material and the application state of the bonding material 33 in the bonding area 2 after applying the bonding material with the MOS camera 100, the mounting member 31 is moved in the Y direction. It is possible to make the image easier to recognize.
- the bonding head 40 of the semiconductor chip picks up the semiconductor chips 65 one by one from the semiconductor chip peak position P1 by using the vacuum attraction force to form a bonding position P2. Are sequentially bonded to the bonding area 2 of the substrate 1 on which the bonding material 33 is applied.
- the aggregate 60 is arranged.
- the semiconductor chip assembly 60 has a semiconductor chip 63 attached to an adhesive sheet 62 attached to a wafer ring 61, and FIG. ),
- the semiconductor wafer 63 is cut lengthwise and crosswise by a dicer 64 to divide it into individual semiconductor chips 65, and then, as shown in FIG.
- the semiconductor chips 6 5, 65 are separated from each other by putting down on the fixing ring 6 6, depressing the wafer ring 6 1, and stretching the adhesive sheet 6 2, and separating the adhesive sheets 6 2 The bonding force between the semiconductor chip 65 and the semiconductor chip 65 is reduced.
- the unloader 50 mounts a magazine 52 which can horizontally accommodate a large number of substrates 1 at a predetermined pitch in a vertical direction on an elevator 51, and The whole board 51 is lowered (or raised) one pitch at a time by one pitch, and the bonded substrates 1 are accommodated in the magazine 52 one by one from below (or above).
- the transfer device 70 includes a lower timing pelt (hereinafter referred to as a lower belt) 71 and an upper timing pelt (hereinafter referred to as an upper belt) 72 vertically. They are arranged facing each other.
- the lower pelt 71 is horizontally supported by a driving pulley 73, a driven pulley 74, and a number of feed pulleys 75, 76 fixed at a predetermined height, and is supported in the horizontal direction in the direction of the arrow shown in FIG. 2 side moves from left end to right end).
- the upper belt 72 is horizontally supported by a driving pulley ⁇ 7, a driven pulley 78, and a number of feed pulleys 79, 80.
- the upper belt 72 is in the direction indicated by the arrow (the lower belt 71 side is from the left end to the right end). Go to) It has become. ..
- pulleys 73A and 77A are fixed to the other ends of the rotation shafts of the drive pulleys 73 and 77, respectively.
- a timing belt 84 is stretched over the pulley 82 attached to the rotating shaft of the first drive motor 81 and the tension pulley 83 so that the drive pulleys 73 and 77 are rotated synchronously and in opposite directions. Has become. ..
- the drive pulley 73 of the lower belt 71, the driven pulley 74 and the drive pulleys 77 and 78 of the upper pelt 72, and the pulley 82 and the tension pulley 83 attached to the drive motor 81 are all flanges. It is for a timing belt having irregularities on its peripheral surface that match the irregularities formed on the inner peripheral surfaces of the upper and lower belts 71, 72.
- the feed pulleys 75 and 76 of the lower belt 71 and the feed pulleys 79 and 80 of the upper belt 72 For use with timing belts that have unevenness that fits in.
- the feed pulleys 76 and 80 (shown by B in FIG. 10) have no unevenness on the peripheral surface that matches the unevenness of the upper and lower pelts 71 and 72. It is just for support.
- FIG. 12 (D) is an enlarged view of a portion B in FIG. 12 (B), the feed pulley 76 on the lower pelt 71 side and the feed pulley 80 on the upper belt 72 side , Without tsuba.
- cost reduction is achieved by using inexpensive feed pulleys 76 and 80 without flanges and unevenness and alternately disposing expensive feed pulleys 75 and 79 with flanges and unevenness. .
- the shafts 79 & and 80a of the feed pulleys 79 and 80 of the upper pelt 72 are slightly different from the shafts 75a and 76a of the feed pulleys 75 and 76 of the lower pelt 71, as shown in FIG. It is mounted eccentrically on the da 20 side.
- each feed The unloader 50 side of the pulleys 79, 80 is constantly urged obliquely downward by a pulling lever # 85.
- the upper pelt 72 is constantly pressed toward the lower pelt 71 by the elastic force of the tension spring 85 acting on each of the feed pulleys 79 and 80.
- the substrate 1 can be gripped by the upper and lower belts 71, 72, and when a force opposing the elastic force of the tension spring 85 acts, the feed pulleys 79, 80 of the upper belt 72 move the shafts 79a, 80. It rotates counterclockwise around a, whereby the unloader 50 side of the feed pulleys 79, 80 is configured to be able to move upward by piles on the elastic force of the bow [85].
- a substrate 1 having a thickness t of tl (> t) is supplied between the upper and lower belts 71 and 72
- the unloader 50 side of the feed pulleys 79 and 80 is subjected to the elastic force of the tension spring 85.
- the upper belt 72 rises, and the thick substrate 1 can be reliably gripped by the upper and lower belts 71, 72.
- the return portion 71a of the lower pelt 71 is provided with a guide roll 86 fixedly arranged and a tension roll 87 that can be moved up and down.
- the return portion 72a of the upper belt 72 has an appropriate number.
- a tension roll 88 is provided, and a moderate tension is applied to the upper and lower belts 71 and 72 respectively.
- the direction changing rolls 89, 90, and 90 are provided so as not to hinder the movement of the bonding head 40.
- a portion 93 whose height is reduced by 91 and 92 is provided. That is, the pickup position P1 at which the semiconductor chip 65 is picked up from the semiconductor chip assembly 60 is disposed in front of the upper and lower belts 71 and 72 (downward in the figure), as shown in FIG. Since the substrate 1 on which the semiconductor chip 65 is to be bonded is located beyond the upper and lower belts 71 and 72 (upper side in the figure), the bonding head 40 is located on the front side of the semiconductor chip near the upper and lower belts 71 and 72. It is necessary to reciprocate between the pickup position P1 and the substrate 1 on the other side of the upper and lower belts 71 and 72.
- the bonding head 40 will The horizontal section is moved up and down, and the upper side.Because it is necessary to climb over the return section 72a of the belt 72 and a large vertical movement of the bonding head 40 is required, the bonding head 40 Not only is the drive mechanism large and expensive, but the bonding speed is inevitably reduced.
- the bonding head 40 moves up and down greatly through the lowered portion 93.
- the transfer device 70 includes a table 94 disposed along the moving direction of the substrate 1 on the opposite side of the upper and lower pelts 71 and 72. Substrate 1 is transported above.
- the currently available resolutions of the first and second CMOS cameras 100 and 110 are about 4.11 million pixels (2,047 x 2,008), and the readout time corresponding to all pixels within the field of view of the CCD camera is about 12 ms ec, approximately 13 times the resolution of a conventional CCD camera (approximately 300,000 pixels (640 x 480)), and approximately 1/3 of the 33 ms ec for all pixels in the field of view of the CCD camera It has high performance and high-speed image recognition.
- the drive motor 81 of the transfer device 70 is driven so that the upper and lower belts 71 and 72 are intermittently moved by one pitch of the bonding area 2 of the substrate 1 in synchronization with the direction of the arrow in FIG. Keep it. Then, when one substrate 1 is supplied from the loader 20 to the transfer device # 0 with the gripping region 3 on the near side (the upper and lower pelts 71 and 72 sides), the upper and lower belts 71 and 72 of the transfer device 70 The gripping area 3 at one end of the substrate 1 is gripped from above and below, and is intermittently transported from the left end to the right end in FIG. At this time, the bonding material application device 30 is retracted to the bonding area of the first row of the substrate 1, that is, a position outside the bonding material application area.
- the bonding area 2 in the first row of the substrate 1 is the bonding material application position PS, that is, the first CM.
- PS bonding material application position
- it pauses at that position and, as shown in Fig.13, at least collectively recognizes all bonding areas 2 in the first row, Check if it is located at the location. If the bonding area 2 is not located at the proper position, the transport device 70 is operated based on the detection output, and the bonding area 2 is automatically corrected to the proper position. Alternatively, based on this deviation amount, the application position of the bonding material described below is automatically corrected.
- the bonding material applying device 30 descends, applies the bonding material 33 to the first bonding area 2 in the first row of the substrate 1, and moves up. You. Then, the mounting member 31 is moved horizontally by one pitch in the X direction and lowered by the X-direction driving mode (not shown), and the bonding material is transferred to the second bonding area 2 in the first row of the substrate 1. 3 Apply 3 and raise. Hereinafter, similarly, the bonding material 33 is sequentially applied to the third to n-th bonding regions 2 in the first column of the substrate 1 and the bonding region 33 is raised.
- the bonding material 33 is applied to all the bonding areas 2 in the first row of the substrate 1, at least the bonding area 2 in the first row is obtained by the first CMOS camera 100.
- the application condition of the bonding material 3 3 is adjusted, and the bonding area 2 in the defective application state is determined. It is stored in a storage device and is used for bonding a semiconductor chip in the next process.
- the bonding material 3 3 is applied to at least the entire bonding area 2 in the first row and the applied state is image-recognized, the substrate 1 is moved by one pitch by the movement of the upper and lower belts 7 1 and 7 2. It is conveyed intermittently.
- the positions before the application of the bonding material in all the bonding areas 2 of the second and third columns of the substrate 1 are image-recognized, and the bonding material 3 3 is sequentially applied to the bonding area 2 Then, the state of application of the bonding material in all bonding areas 2 is image-recognized.
- the CMOS camera 100 used in the present invention has a high function, as shown in FIG. 13, not only the entire bonding area 2 in the first row of the substrate 1 but also the Since all bonding areas 2 up to several rows in the second and subsequent rows can be simultaneously image-recognized, the state before and / or after the bonding material is applied will be the entire bonding area in the field of view. Two Can be collectively image-recognized. Therefore, an empty time occurs after the image recognition of the bonding regions 2 for several rows at a time, and the image can be processed using the empty time. Alternatively, a more accurate inspection can be performed by dividing and enlarging the image of one or a plurality of bonding areas 2 in the bonding area 2 that has been actively image-recognized. ⁇
- the substrate 1 to which the bonding material 3 3 has been applied is intermittently transported toward the right in FIG. 10 by the upper and lower belts 7 1 and 7 2, and the bonding area 2 in the first row comes to the bonding position PB Then, the second CMOS camera 110 performs image recognition of at least the entire bonding area 2 to which the bonding material 33 in the first row has been applied. Therefore, the application state of the bonding material before the bonding of the semiconductor chip can be inspected again by the image recognition using the second CMOS imager 110.
- the bonding material application state is defective in the first column by the inspection of the bonding material application state and / or the inspection by the first CMOS camera 100,
- the semiconductor chip is bonded by bonding head 40 while skipping bonding region 2 where the material application state is defective.
- the bonding head 40 picks up the semiconductor chips 65 one by one from the semiconductor chip assembly 60 at the pickup position P1, and the bonding position P2 Then, bonding is performed to the substrate 1 sequentially through the bonding material 33 applied to the bonding area 2 of the anti-reflection coating 1.
- the bonding head 40 is located between the pickup position P 1 of the semiconductor chip 65 and the substrate 1. To and from the bonding position P2 without significantly moving up and down, so that the bonding head 40 drive mechanism can be made compact and inexpensive, and the bonding speed can be improved. be able to.
- the substrate 1 is intermittently transported by one pitch, and thereafter, the bonding in the second and third columns is performed.
- Semiconductor chips 65 are sequentially bonded to the bonding region 2.
- the bonding state of the semiconductor chip 65 is image-recognized by the second CMOS camera 110 in such a manner that all the bonding regions 2 in at least one row of 1 are combined.
- the bonding area 2 determined to be defective by the image recognition is stored in a storage device, and can be used so as to be skipped at the time of characteristic selection in a later process. Further, the recognized bonding state can be fed back to the subsequent bonding operation.
- the substrate 1 to which the semiconductor chip 65 is bonded is intermittently transported to the right, and the rightmost unloader 50 is moved up (or down) one pitch at a time by an elevator 51. At the same time, they are sequentially stored in the magazine 52.
- the CMOS camera 110 used in the present invention has a high function, as shown in FIG. 13, not only the entire bonding area 2 in the first row of the substrate 1 but also the second Since all the bonding areas 2 up to several rows after the first row can be simultaneously image-recognized, the state of the semiconductor chip before and / or after bonding is determined by checking all the bonding areas 2 in the field of view. Images can be recognized collectively. Therefore, an empty time occurs after the image recognition of the bonding area 2 for several rows at a time, so that the image can be processed using this empty time, and the bonding area where the image recognition has been actively performed can be performed.
- the single or multiple images in 2 can be divided and enlarged, and a higher-precision inspection can be performed with the enlarged image of single or multiple bonding regions 2.
- the transfer device 70 when the thickness dimension t of the substrate 1 changes due to the type change of the substrate 1 will be described.
- the shafts 79a and 80a of the upper pulleys 79 and 80 on the upper belt ⁇ 2 are eccentric to the loader 20 side as described above. Since the unloader 50 side of the feed pulleys 79, 80 is urged toward the lower belt 71 by a tension spring 85, as shown in FIG.
- a substrate 1a with a thickness of t1 (> t) is supplied, as shown in Fig. 14 (B)
- the feed pulleys 79 and 80 on the upper belt 72 rotate counterclockwise around the shafts 79a and 80a, but the shafts 75 of the feed pulleys 79 and 80 are rotated.
- 76a are mounted eccentrically on the loader 20 side, so that the unloader 50 side of the feed pulleys 79, 80 is piled up by the elastic force of the tension spring 85, and rises.
- the upper belt 72 is raised, so that the gripping area 3 of the substrate 1a having the thickness t1 (> t) of the upper and lower belts 71, 72 can be reliably gripped and transported.
- the unloader 50 side of the feed ports 79 and 80 resists the elastic force of the tension spring 85 in response to the variation in the thickness dimension of the substrate 1.
- the upper belt 72 rises, so that it is possible to automatically respond without using an adapter or adjusting the mounting position of the feed rolls 79, 80.
- the diameter of the feed rolls 79, 80 of the upper belt 72 and the eccentricity of the shafts 79a, 80a are determined by the variation range of the thickness of the substrate conveyed by the conveyer 70. It is necessary to set it appropriately in advance according to.
- the shafts 79a, 80a of the upper rolls 72, 80 and the feed rolls 79, 80 are connected to the lower rolls 71, 7 of the feed rolls 75, 7, 6 on the shaft 75a. , 76a so as to be eccentrically mounted on the loader 20 side, and to urge the unloader 50 side of the feed rolls 79, 80 toward the lower belt 72 by the tension spring 85.
- the shafts 79a and 80a of the feed rolls 79 and 80 are attached so that they can be raised and lowered, and the shafts 79a and 80a are pulled toward the lower belt 71 by a tension spring or compressed. The spring may be pressed toward the lower belt 71.
- the upper pelts 72 are constituted by one timing belt, and In the turn part 72a, a portion 93 with a reduced height is provided in the moving path of the bonding head.However, the upper belt 72 is divided into two parts by the bonding head moving path, and synchronized. You may make it move.
- the case where the CMOS camera is used as the first high-performance camera 100 and the second high-performance camera 110 has been described. Any camera that can collectively recognize images can be used. Further, in the above embodiment, the case where the first high-performance camera 100 and the second high-performance camera 110 are provided with the monitors 101 and 111 respectively has been described. The monitor may be used to simultaneously display the image of the first advanced camera 100 and the image of the second advanced camera 110 on the shared monitor screen. Alternatively, the image of the first high-function camera 100 and the image of the second high-function camera 110 may be displayed on the shared monitor screen while being temporally switched.
- the substrate 1, the loader 20, the bonding material applying device 30, the bonding head 40, the unloader 50, the transfer device 70, the unloader 50, and the like may have a configuration other than that shown in the embodiment.
- No. INDUSTRIAL APPLICABILITY The peak recognition method and die bonder of the present invention are particularly useful for a die recognition method for a semiconductor chip die bonder and a die bonder.
- the present invention can also be applied to a work recognition method in an electronic component die bonder and a die bonder.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Die Bonding (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB038266105A CN100383940C (zh) | 2003-07-31 | 2003-07-31 | 芯片附着装置中的工件辨识方法及芯片附着装置 |
AU2003252308A AU2003252308A1 (en) | 2003-07-31 | 2003-07-31 | Method for recognizing work in die bonder and die bonder |
JP2005507392A JP4134169B2 (ja) | 2003-07-31 | 2003-07-31 | ダイボンダにおけるワーク認識方法およびダイボンダ |
PCT/JP2003/009763 WO2005013351A1 (ja) | 2003-07-31 | 2003-07-31 | ダイボンダにおけるワーク認識方法およびダイボンダ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/009763 WO2005013351A1 (ja) | 2003-07-31 | 2003-07-31 | ダイボンダにおけるワーク認識方法およびダイボンダ |
Publications (1)
Publication Number | Publication Date |
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WO2005013351A1 true WO2005013351A1 (ja) | 2005-02-10 |
Family
ID=34113475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/009763 WO2005013351A1 (ja) | 2003-07-31 | 2003-07-31 | ダイボンダにおけるワーク認識方法およびダイボンダ |
Country Status (4)
Country | Link |
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JP (1) | JP4134169B2 (ja) |
CN (1) | CN100383940C (ja) |
AU (1) | AU2003252308A1 (ja) |
WO (1) | WO2005013351A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012093548A1 (ja) * | 2011-01-06 | 2012-07-12 | 富士機械製造株式会社 | 成膜パターン形成方法及び成膜パターン形成装置 |
JP2013157530A (ja) * | 2012-01-31 | 2013-08-15 | Hitachi High-Tech Instruments Co Ltd | ダイボンダ |
TWI752558B (zh) * | 2019-09-19 | 2022-01-11 | 日商捷進科技有限公司 | 晶粒接合裝置及半導體裝置之製造方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6846958B2 (ja) * | 2017-03-09 | 2021-03-24 | ファスフォードテクノロジ株式会社 | ダイボンディング装置および半導体装置の製造方法 |
JP7249176B2 (ja) | 2019-03-15 | 2023-03-30 | 株式会社豊田中央研究所 | モータ用筐体 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5645036A (en) * | 1979-09-20 | 1981-04-24 | Toshiba Corp | Mounting method and apparatus for semiconductor pellet |
JPH06342815A (ja) * | 1993-06-02 | 1994-12-13 | Nec Yamaguchi Ltd | ダイボンダー |
JP2003218136A (ja) * | 2002-01-22 | 2003-07-31 | Matsushita Electric Ind Co Ltd | 電子部品実装装置及び実装方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3564332B2 (ja) * | 1999-08-05 | 2004-09-08 | 株式会社カイジョー | ボンディング装置 |
US6874225B2 (en) * | 2001-12-18 | 2005-04-05 | Matsushita Electric Industrial Co., Ltd. | Electronic component mounting apparatus |
-
2003
- 2003-07-31 CN CNB038266105A patent/CN100383940C/zh not_active Expired - Lifetime
- 2003-07-31 AU AU2003252308A patent/AU2003252308A1/en not_active Abandoned
- 2003-07-31 JP JP2005507392A patent/JP4134169B2/ja not_active Expired - Fee Related
- 2003-07-31 WO PCT/JP2003/009763 patent/WO2005013351A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5645036A (en) * | 1979-09-20 | 1981-04-24 | Toshiba Corp | Mounting method and apparatus for semiconductor pellet |
JPH06342815A (ja) * | 1993-06-02 | 1994-12-13 | Nec Yamaguchi Ltd | ダイボンダー |
JP2003218136A (ja) * | 2002-01-22 | 2003-07-31 | Matsushita Electric Ind Co Ltd | 電子部品実装装置及び実装方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012093548A1 (ja) * | 2011-01-06 | 2012-07-12 | 富士機械製造株式会社 | 成膜パターン形成方法及び成膜パターン形成装置 |
JP2012142525A (ja) * | 2011-01-06 | 2012-07-26 | Fuji Mach Mfg Co Ltd | 成膜パターン形成方法及び成膜パターン形成装置 |
JP2013157530A (ja) * | 2012-01-31 | 2013-08-15 | Hitachi High-Tech Instruments Co Ltd | ダイボンダ |
TWI752558B (zh) * | 2019-09-19 | 2022-01-11 | 日商捷進科技有限公司 | 晶粒接合裝置及半導體裝置之製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005013351A1 (ja) | 2006-09-28 |
CN1788341A (zh) | 2006-06-14 |
JP4134169B2 (ja) | 2008-08-13 |
AU2003252308A1 (en) | 2005-02-15 |
CN100383940C (zh) | 2008-04-23 |
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