WO2009150766A1 - 圧着ボール径検出装置および方法 - Google Patents
圧着ボール径検出装置および方法 Download PDFInfo
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- WO2009150766A1 WO2009150766A1 PCT/JP2008/072887 JP2008072887W WO2009150766A1 WO 2009150766 A1 WO2009150766 A1 WO 2009150766A1 JP 2008072887 W JP2008072887 W JP 2008072887W WO 2009150766 A1 WO2009150766 A1 WO 2009150766A1
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Definitions
- the present invention relates to a pressure-bonded ball diameter detecting device for detecting a diameter of a pressure-bonded ball bonded by a bonding apparatus and a method for detecting a pressure-bonded ball diameter.
- a wire bonding apparatus that connects a pad that is an electrode of a semiconductor chip and a lead that is an electrode of a lead frame with a wire that is a thin metal wire is often used.
- a wire bonding apparatus a wire is inserted into a capillary, a wire extending from the tip of the capillary is formed into an initial ball by sparks, etc., the capillary is lowered toward the pad, and the initial ball is pressed against the pad by the tip of the capillary.
- the size of the press-bonded ball be a predetermined design value. This is because when the size of the press-bonded ball is smaller than the design value, poor bonding may occur. When the size of the press-bonded ball is larger than the design value, the press-bonded ball protrudes from the pad. This is because it may come into contact with the pad to be performed.
- the size of the press-bonded ball may change during bonding depending on the heating temperature of the heat block of the bonding apparatus. For this reason, it is necessary to detect the size of the press-bonded ball during bonding and to confirm whether the press-bonded ball is bonded in the designed size.
- a ball edge is detected from at least three directions connecting the center position of the pad and a point outside the press-bonded ball in the pad, and the position and / or size and / or shape of the press-bonded ball is calculated from the three ball edges. A method has been proposed.
- the size of the pad is reduced, and a semiconductor device is manufactured in which the diameter of the wire extending from the pad and the diameter of the press-bonded ball are substantially the same.
- An object of the present invention is to improve the detectability of the diameter of a press-bonded ball bonded by a bonding apparatus.
- the rectangular pads are arranged side by side in the short side direction, and each wire extends from each crimping ball bonded to each rectangular pad across each short side of each rectangular pad.
- the first pad group and the first pad group, the rectangular pads are arranged side by side in the short side direction, and the first pad group is bonded to each rectangular pad.
- a second pad group extending from each wire to the opposite side of each wire, and each image of each rectangular pad of each pad group of the semiconductor chip provided on the surface and bonded to each rectangular pad of the semiconductor chip by a bonding apparatus
- Each image of each crimp ball to be acquired is connected to a camera and a bonding device, and acquired by the camera.
- An image processing unit that processes each image, and the image processing unit includes a contour of each crimp ball from each image acquired by the camera and each pad short side on the side where each wire from each crimp ball does not extend.
- a contour acquisition means for acquiring a contour; a bonding control center position acquisition means for acquiring a bonding control center position of each press-bonded ball from the bonding apparatus; and a contour of each pad short side included in the first pad group and the press-bonded ball.
- the second pad group is determined from the distance in the pad longitudinal direction between the contour of each pad short side included in the second pad group and the bonding control center position of the press-bonded ball.
- a second temporary radius obtained by subtracting the distance in the pad longitudinal direction between the contour of each pad short side included in the loop and the contour of each press-bonded ball, and the same number of first temporary radii and second temporary radii
- a pressure-bonded ball diameter calculating means for calculating a pressure-bonded ball diameter by averaging.
- a rectangular pad is arranged side by side in the short side direction, and each wire extends from each press-bonded ball bonded to each rectangular pad across each short side of each rectangular pad.
- the first pad group and the first pad group, the rectangular pads are arranged side by side in the short side direction, and the first pad group is bonded to each rectangular pad.
- a second pad group extending from each wire to the opposite side of each wire, and each image of each rectangular pad of each pad group of the semiconductor chip provided on the surface and bonded to each rectangular pad of the semiconductor chip by a bonding apparatus
- a contour acquisition step for acquiring the contour of each pad short side on the side where each wire from each crimping ball does not extend, and a bonding control center for acquiring the bonding control center position of each crimping ball from the bonding apparatus
- a position acquisition step and a contour of each pad short side included in the first pad group from a distance in a pad longitudinal direction between the contour of each pad short side included in the first pad group and the bonding control center position of the press-bonded ball;
- the first temporary radius obtained by subtracting the distance in the pad longitudinal direction from the contour of each crimp ball, the contour of each pad short side included in the second pad group, and the bond
- Each second obtained by subtracting the distance in the pad longitudinal direction between the contour of each pad short side and the contour of each crimp ball included in the second pad group from the distance.
- radius a calculated, characterized in that it comprises a step out press-bonded ball diameter calculating for calculating a compression ball diameter to average the same number of first provisional radius and the second tentative radii, the.
- the present invention has an effect that it is possible to improve the detectability of the diameter of a press-bonded ball bonded by a bonding apparatus.
- the press-bonded ball diameter detection device 30 of this embodiment includes a camera 32 that acquires an image of a pad of a fine-pitch semiconductor chip 23 and a press-bonded ball bonded to the pad, and an image acquired by the camera 32. And a display unit 33 that is connected to the image processing unit 31 and displays the diameter of the press-bonded ball.
- the wire bonding apparatus 10 for bonding wires to a fine-pitch semiconductor chip 23 to form a pressure-bonded ball on a pad has a bonding stage 17 for adsorbing and fixing a substrate 21 to which the semiconductor chip 23 is attached, and a capillary 13 at the tip.
- An XY table 11 that freely moves the bonding head 12 in the XY direction, and a control unit 60 that controls the operation of the bonding head 12 and the XY table 11 are provided.
- the control unit 60 forms a wire extending to the tip of the capillary 13 on an initial ball by a discharge torch or the like (not shown), and adjusts the center position of the capillary 13 to the bonding position on the pad by the XY table 11 and then the bonding head.
- a Z-direction motor is driven to press the initial ball onto the pad to form a press-bonded ball.
- the camera 32 includes an optical system constituted by a lens and the like, and an imaging surface such as a CCD that converts an image formed by the optical system into an electric signal, and is connected to the image processing unit 31.
- the image processing unit 31 is a computer including an internal CPU and memory.
- the display unit 33 displays the diameter of the press-bonded ball numerically using LEDs or the like.
- the control unit 60 of the wire bonding apparatus 10 is also a computer including a CPU and a memory inside.
- the image processing unit 31 and the control unit 60 are connected by a signal circuit such as a data bus.
- the semiconductor chip 23 to which wires are bonded by the wire bonding apparatus 10 has rectangular pads 130 arranged side by side in the short-side direction, and each crimp ball 150 bonded to each rectangular pad 130 has each From the first pad group 100 in which each wire 124 extends across each short side of the rectangular pad 130 and the rectangular ball 230 arranged in the short side direction, and from each crimp ball 250 bonded to each rectangular pad 230. And a second pad group 200 in which each wire 224 extends across each short side of each rectangular pad 230.
- the rectangular pads 330 are arranged in the short side direction, and the wires 324 extend from the press-bonded balls 350 bonded to the rectangular pads 330 across the short sides of the rectangular pads 330.
- the third pad group 300 and the rectangular pads 430 are arranged side by side in the short side direction, and each wire 424 extends from each crimp ball 450 bonded to each rectangular pad 430 across each short side of each rectangular pad 430. And a fourth pad group 400 that extends.
- the long sides of the rectangular pads 130 and 230 are in the X direction and the short side is in the Y direction, and each includes three rectangular pads 130 and 230.
- the first pad group 100 and the second pad group 200 are provided on both sides of the surface of the semiconductor chip in the X direction so as to face the X direction which is the long side direction of the rectangular pads 130 and 230.
- the rectangular pads 130 and 230 included in the first pad group 100 and the second pad group 200 have the same size with the long side length P 1 and the short side length P 2 .
- the long side length P 1 is a length at which bonding can be performed at one end and probing can be performed at the other end
- the short side length P 2 is a length corresponding to the fine pitch.
- the wire 124 extending from the press-bonded ball 150 bonded to each rectangular pad 130 of the first pad group 100 crosses the short side of the rectangular pad 130 on the X direction minus side (left side of FIG. 2), and the X direction minus. It extends toward the side.
- the wire 124 extending from the central rectangular pad 130 extends substantially along the long side direction of the rectangular pad 130, and the wire 124 extending from the rectangular pad 130 on both sides extends at an angle with respect to the long side direction of each rectangular pad 130. Yes.
- a wire 224 extending from the press-bonded ball 250 bonded to each rectangular pad 230 of the second pad group 200 extends in the X direction across the short side of the rectangular pad 230 on the X direction plus side (the right side in FIG. 2). It extends toward the side.
- the wire 224 extending from the central rectangular pad 230 extends substantially along the long side direction of the rectangular pad 230, and the wire 224 extending from the rectangular pad 230 on both sides extends at an angle with respect to the long side direction of each rectangular pad 230. Yes.
- each wire 124 of the first pad group 100 and each wire 224 of the second pad group 200 extend in the X direction toward the opposite sides.
- the long sides of the rectangular pads 330 and 430 are in the Y direction and the short side is in the X direction, and include three pads 330 and 430, respectively.
- the third pad group 300 and the fourth pad group 400 are provided on both sides of the surface of the semiconductor chip in the Y direction so as to oppose the Y direction which is the long side direction of the rectangular pads 330 and 430.
- Each of the rectangular pads 330 and 430 included in the third pad group 300 and the fourth pad group 400 has a long side length P 1 and a short side length P 2 , and the first and second pad groups 100. , 200 are the same size as the rectangular pads 130, 230.
- a wire 324 extending from the press-bonded ball 350 bonded to each rectangular pad 330 of the third pad group 300 extends toward the positive side in the Y direction across the short side of the rectangular pad 330 on the positive side in the Y direction.
- the wire 324 extending from the central rectangular pad 330 extends substantially along the long side direction of the rectangular pad 330, and the wire 324 extending from the rectangular pad 330 on both sides extends at an angle with respect to the long side direction of each rectangular pad 330.
- the wire 424 extending from the press-bonded ball 450 bonded to each rectangular pad 430 of the fourth pad group 400 extends toward the negative side in the Y direction across the short side on the negative side in the Y direction of the rectangular pad 430.
- the wire 424 extending from the central rectangular pad 430 extends substantially along the long side direction of the rectangular pad 430, and the wire 424 extending from the rectangular pad 430 on both sides extends at an angle with respect to the long side direction of each rectangular pad 430. Yes.
- each wire 324 of the third pad group 300 and each wire 424 of the fourth pad group 400 extend in the Y direction toward the opposite sides.
- the CPU of the image processing unit 31 adjusts the position of the camera 32 so that the rectangular pad 130 of the first pad group 100 enters the field of view of the camera 32, and then outputs a command to acquire an image. In response to this command, the image processing unit 31 acquires images of the rectangular pad 130 and the press-bonded ball 150 from the camera 32 and stores them in the memory.
- the image acquired as shown in FIG. 3A includes a rectangular pad 130, a press-bonded ball 150 that is press-bonded to the rectangular pad 130, and a wire 124 that extends from the press-bonded ball 150 to the negative side in the X direction. Since the short side length P 2 of the rectangular pad 130 is arranged at a fine pitch, the length thereof is small, and the press-bonded ball 150 has a small diameter so as to fall within the short side of the small rectangular pad 130. . For this reason, the diameter of the press-bonded ball 150 is slightly larger than the diameter of the wire 124. As shown in FIG. 3A, in the acquired image, the X direction minus of the rectangular pad 130 over which the wire 124 straddles. The short side is almost hidden under the wire 124.
- the center point 153 of the press-bonded ball 150 that appears as the intersection of the center line 151 in the X direction and the center line 152 in the Y direction is the center line 161 in the X direction and the center line in the Y direction.
- the position of the wire bonding apparatus 10 is slightly shifted to the plus side in the X and Y directions from the position of the bonding control center 163 commanded to the XY table 11.
- the CPU of the image processing unit 31 processes the image stored in the memory and outputs a command for acquiring the contour of the rectangular pad 130 and the contour of the press-bonded ball 150.
- the CPU of the image processing unit 31 reads out the image data stored in the memory, acquires the outline of the rectangular pad 130 as a line of each side from a planar image by, for example, binarization processing, 150 contours are acquired as curves.
- the four sides constituting the rectangular pad 130 are a line segment 132 between the point 131 and the point 133, a line segment 134 between the point 133 and the point 135, and Acquired as five line segments: a line segment 136 between point 135 and point 137, a line segment 138 between point 137 and point 139, and a line segment 140 between point 139 and point 141.
- the Between the point 131 and the point 141 is a portion hidden by the wire 124 extending from the press-bonded ball 150, and the height position of the rectangular pad 130 is different from that of the rectangular pad 130. Therefore, in the image in which the surface of the rectangular pad 130 is in focus. In this case, the contrast of the portion of the wire 124 is lowered due to the focus shift, and the contour cannot be acquired. For this reason, the outline of the side cannot be recognized even by binarization processing or the like, and the line segment is not acquired.
- the contour of the press-bonded ball 150 for example, the contour can be acquired by binarizing a high-contrast portion of an image obtained by focusing on the surface of the rectangular pad 130.
- the portion of the wire 124 extending from the press-bonded ball 150 is different in height from the surface of the rectangular pad 130, the portion covering the wire 124 is out of focus in the image in which the surface of the rectangular pad 130 is in focus. As a result, the contrast is lowered and the contour cannot be acquired. Therefore, as shown in FIG. 4A, the contour of the press-bonded ball 150 is acquired as a curve 157 between the points 154 and 155 excluding the rising portion on the wire 124.
- the CPU of the image processing unit 31 extends in the Y direction into the line segments 132, 134, 136, 138, and 140 indicating the respective sides of the acquired rectangular pad 130, and has sides that are substantially the same length as the short sides of the rectangular pad 130. That is, it is determined whether or not the line segment representing the short side where the wire 124 is not extended can be recognized. If the line segment representing the short side on which the wire 124 is not extended cannot be recognized in the acquired line segment, it is determined that the diameter of the press-bonded ball 150 cannot be calculated using the acquired line segment.
- the camera 32 is moved to the next rectangular pad 130 of the pad group 100, and image acquisition and line segment acquisition are repeated until a line segment representing the short side of the rectangular pad 130 where the wire 124 does not extend is acquired.
- the line segment 136 is a line segment representing the short side where the wire 124 is not extended, and the CPU of the image processing unit 31 can acquire the line segment representing the short side where the wire 124 is not extended. Recognize that
- the CPU of the image processing unit 31 sets a tangent line 170 extending in the Y direction and in contact with a curve 157 indicating the contour of the press-bonded ball 150.
- the tangent line 170 is set by moving a line segment extending in the Y direction in the X direction in image processing, and obtaining a line segment passing through the point 156 where the intersection of the line segment and the curve 157 becomes one from two as the tangent line 170.
- the curve 157 is an arc indicating the contour of the press-bonded ball 150
- an approximate arc representing the curve is set, and a line passing through the point 156 in contact with the approximate arc is calculated as the tangent 170. May be.
- the distance between the tangent line 170 and the line segment 136 is set to the contour of the press-bonded ball 150 and the contour of the short side of the rectangular pad 130 on the side where the wire 124 is not extended. Is obtained as a distance Gx 1 and stored in a memory.
- the CPU of the image processing unit 31 acquires the position of the bonding control center 163 of the rectangular pad 130 that is performing image processing from the control unit 60 of the wire bonding apparatus 10.
- the bonding control center 163 is acquired as, for example, the number of pixels in each XY direction from the center of the acquired image.
- the CPU of the image processing unit 31 acquires the distance Lx 1 between the bonding control center 163 and the line segment 136 by acquiring the number of pixels between the bonding control center 163 and the line segment 136.
- the distance Lx 1 is the distance between the position of the bonding control center 163 and the outline of the short side of the rectangular pad 130 on the side where the wire 124 does not extend.
- the CPU of the image processing unit 31 calculates the first temporary radius ra 1 by subtracting the distance Gx 1 from the distance Lx 1 .
- the first temporary radius ra 1 is acquired as a value obtained by adding the amount of deviation ⁇ 1 in the X direction between the center point 153 of the press-bonded ball 150 and the position of the bonding control center 163 to the radius of the press-bonded ball 150. Is done.
- the image processing unit 31 repeats the operations described above, acquires a predetermined number of first temporary radii ra 1 from the first pad group 100, and stores them in the memory.
- the image processing unit 31 acquires from the second pad group 200 and the second tentative radii ra 2 in a manner similar to that acquired the first tentative radii ra 1 from the first pad group 100.
- the acquisition of the second temporary radius ra 2 from the second pad group 200 is the same as the method described above with reference to FIGS. 3A, 4A, and 5A, as shown in FIGS. 3B, 4B, and 5B.
- each symbol is read as the 200th series representing each rectangular pad, point, and line segment included in the second pad group 200.
- the CPU of the image processing unit 31 can set the distance between the tangent line 270 and the line segment 236 when the tangent line 270 can be set as in the first pad group 100. Is obtained as a distance Gx 2 from the short side contour of the rectangular pad 230 on the side where the wire 224 is not extended, and stored in the memory.
- the CPU of the image processing unit 31 acquires the position of the bonding control center 263 of the rectangular pad 230 that is performing image processing from the control unit 60 of the wire bonding apparatus 10, and the distance Lx between the bonding control center 263 and the line segment 236. Get 2 The distance Lx 2 is the distance between the contour of the short sides of the position and the side of the rectangular pad 230 to which the wire 224 does not extend the bonding control center 263. Then, the CPU of the image processing unit 31 calculates the second temporary radius ra 2 by subtracting the distance Gx 2 from the distance Lx 2 . As shown in FIG.
- the second temporary radius ra 2 is obtained as a value obtained by subtracting the amount of deviation ⁇ 2 in the X direction between the center point 253 of the press-bonded ball 250 and the position of the bonding control center 263 from the radius of the press-bonded ball 250. Is done.
- the image processing unit 31 acquires a predetermined number of second temporary radii ra 2 from the second pad group 200 and stores them in the memory.
- the CPU of the image processing unit 31 reads the same number of the first temporary radius ra 1 and the second temporary radius ra 2 from the memory and calculates the average thereof.
- the first tentative radii ra 1 has been acquired as a deviation amount [delta] 1 a value obtained by adding the X direction between the position of the center point 153 and the bonding control center 163 a compression ball 150 to the radius of the crimping ball 150
- second The provisional radius ra 2 is obtained as a value obtained by subtracting the amount of deviation ⁇ 2 in the X direction between the center point 253 of the press-bonded ball 250 and the position of the bonding control center 263 from the radius of the press-bonded ball 250.
- the deviation amount ⁇ 1 and the deviation amount ⁇ 2 have substantially the same value, the deviation amount is calculated by calculating the average of the same number of the first temporary radius ra 1 and the second temporary radius ra 2.
- ⁇ 1 and the amount of deviation ⁇ 2 can be offset, and the average radius in the X direction of the press-bonded balls 150 and 250 can be obtained.
- the image processing unit 31 doubles the obtained X-direction average radius of the press-bonded balls 150 and 250 to display the diameter in the X-direction on the display unit 33 of the press-bonded balls 150 and 250.
- the image processing unit 31 obtains the average radius in the Y direction of the press-bonded balls 350 and 450 from the third pad group 300 and the fourth pad group 400 by the same method as described above, and doubles the average radius. And it displays on the display part 33 as a diameter of a Y direction.
- the distance between the short side of the rectangular pads 130 to 430 where the wires 124 to 424 are not extended and the contour of the crimp balls 150 to 450 without obtaining the center position of the crimp balls 150 to 450 is calculated. Since the average diameter of the press-bonded balls 150 to 450 can be obtained from the distance between the bonding control center 163 to 463 and the short side of the rectangular pads 130 to 430 where the wires 124 to 424 are not extended, The effect of improving the detectability of the diameters of the pressure-bonded balls 150 to 450 in the case of bonding to a fine pitch semiconductor in which the diameters of 150 to 450 and the diameters of the wires 124 to 424 are the same. Play.
- the pressure-bonded ball diameter detection device 30 has been described as including the independent camera 32, but the camera provided in the wire bonding apparatus 10 may be shared. Further, in the embodiment described above, it has been described that the images of the respective rectangular pads and the pressure-bonded balls are sequentially taken to obtain the first and second temporary radii ra 1 and ra 2 . The images of the plurality of rectangular pads 130 and 230 and the press-bonded balls 150 and 250 included in the two pad groups 100 and 200 are acquired and simultaneously processed to calculate the first and second temporary radii ra 1 and ra 2 . You may do it.
- the detection of the diameter of the press-bonded ball formed by the wire bonding apparatus 10 has been described.
- the present invention is not limited to the press-bonded ball formed by the wire bonding apparatus 10, for example, a bump bonding apparatus or the like
- the present invention can also be applied to detection of the diameter of a press-bonded ball formed by another bonding apparatus.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Mechanical Engineering (AREA)
- Wire Bonding (AREA)
- Image Analysis (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims (2)
- 圧着ボール径検出装置であって、
長方形パッドがその短辺方向に並んで配置され、各長方形パッドにボンディングされる各圧着ボールから各長方形パッドの各短辺を跨いで各ワイヤが伸びる第1のパッドグループと、第1のパッドグループと長方形パッドの長辺方向に対向し、長方形パッドがその短辺方向に並んで配置され、各長方形パッドにボンディングされる各圧着ボールから第1のパッドグループの各ワイヤと反対側に各ワイヤが伸びる第2のパッドグループと、が表面に設けられる半導体チップの各パッドグループの各長方形パッドの各画像と、ボンディング装置によって半導体チップの各長方形パッドにボンディングされる各圧着ボールの各画像と、を取得するカメラと、
ボンディング装置が接続され、カメラによって取得した各画像を処理する画像処理部と、を備え、
画像処理部は、
カメラによって取得した各画像から各圧着ボールの輪郭と、各圧着ボールからの各ワイヤが伸びていない側の各パッド短辺の輪郭と、を取得する輪郭取得手段と、
ボンディング装置から各圧着ボールのボンディング制御中心位置を取得するボンディング制御中心位置取得手段と、
第1のパッドグループに含まれる各パッド短辺の輪郭と圧着ボールのボンディング制御中心位置とのパッド長手方向の距離から第1のパッドグループに含まれる各パッド短辺の輪郭と各圧着ボールの輪郭とのパッド長手方向の距離を差し引いた各第1仮半径と、第2のパッドグループに含まれる各パッド短辺の輪郭と圧着ボールのボンディング制御中心位置とのパッド長手方向の距離から第2のパッドグループに含まれる各パッド短辺の輪郭と各圧着ボールの輪郭とのパッド長手方向の距離を差し引いた各第2仮半径と、を算出し、同数の第1仮半径と第2仮半径とを平均して圧着ボール径を算出する圧着ボール径算出手段と、
を備える圧着ボール径検出装置。 - 圧着ボール径検出方法であって、
長方形パッドがその短辺方向に並んで配置され、各長方形パッドにボンディングされる各圧着ボールから各長方形パッドの各短辺を跨いで各ワイヤが伸びる第1のパッドグループと、第1のパッドグループと長方形パッドの長辺方向に対向し、長方形パッドがその短辺方向に並んで配置され、各長方形パッドにボンディングされる各圧着ボールから第1のパッドグループの各ワイヤと反対側に各ワイヤが伸びる第2のパッドグループと、が表面に設けられる半導体チップの各パッドグループの各長方形パッドの各画像と、ボンディング装置によって半導体チップの各長方形パッドにボンディングされる各圧着ボールの各画像と、をカメラによって取得する画像取得工程と、
取得した各画像から各圧着ボールの輪郭と、各圧着ボールからの各ワイヤが伸びていない側の各パッド短辺の輪郭と、を取得する輪郭取得工程と、
ボンディング装置から各圧着ボールのボンディング制御中心位置を取得するボンディング制御中心位置取得工程と、
第1のパッドグループに含まれる各パッド短辺の輪郭と圧着ボールのボンディング制御中心位置とのパッド長手方向の距離から第1のパッドグループに含まれる各パッド短辺の輪郭と各圧着ボールの輪郭とのパッド長手方向の距離を差し引いた各第1仮半径と、第2のパッドグループに含まれる各パッド短辺の輪郭と圧着ボールのボンディング制御中心位置とのパッド長手方向の距離から第2のパッドグループに含まれる各パッド短辺の輪郭と各圧着ボールの輪郭とのパッド長手方向の距離を差し引いた各第2仮半径と、を算出し、同数の第1仮半径と第2仮半径とを平均して圧着ボール径を算出する圧着ボール径算出工程と、
を備える圧着ボール径検出方法。
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KR20107020885A KR101052221B1 (ko) | 2008-06-13 | 2008-12-16 | 압착볼 직경 검출 장치 및 방법 |
US12/963,874 US8149276B2 (en) | 2008-06-13 | 2010-12-09 | Pressure-bonded ball diameter detecting apparatus and pressure-bonded ball diameter detecting method |
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US6286206B1 (en) * | 1997-02-25 | 2001-09-11 | Chou H. Li | Heat-resistant electronic systems and circuit boards |
JP3744402B2 (ja) * | 2001-10-16 | 2006-02-08 | セイコーエプソン株式会社 | 光学装置の製造方法、および基準位置出し原器 |
KR100652375B1 (ko) * | 2004-06-29 | 2006-12-01 | 삼성전자주식회사 | 와이어 본딩 패키지를 포함하는 이미지 센서 모듈 구조물및 그 제조방법 |
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JPH06174442A (ja) * | 1992-12-01 | 1994-06-24 | Canon Inc | ボンディングワイヤ検査装置 |
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