CN217764805U - Chip metal bonding wire arc height detection equipment - Google Patents
Chip metal bonding wire arc height detection equipment Download PDFInfo
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- CN217764805U CN217764805U CN202221789547.0U CN202221789547U CN217764805U CN 217764805 U CN217764805 U CN 217764805U CN 202221789547 U CN202221789547 U CN 202221789547U CN 217764805 U CN217764805 U CN 217764805U
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Abstract
The utility model relates to a check out test set of chip metal bonding wire camber, including base, testboard, pivot, torsion meter and high needle, the testboard is used for placing and waits to detect the product, the pivot sets up on the base rotatoryly, the torsion meter sets up in the pivot to it is rotatory to follow the pivot, high needle sets up epaxial in the test of torsion meter. In the test, if the highest point of the wire arc is lower than the height needle, the height needle can pass through smoothly without any blockage, and the torque counting value is displayed as zero, which indicates that the wire arc height of the metal welding wire is qualified; if the highest point of the arc is higher than the height needle, the height needle cannot pass through smoothly and can be blocked by the metal welding wire, the torsion meter can display a certain numerical value, and when the numerical value is higher than a set standard value, the arc of the metal welding wire is considered to be too high and unqualified. The method and the device avoid the vulnerability of peak misjudgment caused by inaccurate positioning of the highest point of the manual detection line arc, and ensure the accuracy of arc height measurement.
Description
Technical Field
The utility model relates to a semiconductor detects technical field, especially relates to a check out test set of chip metallic bonding wire arc height.
Background
The chip has a wire bonding process in the production process, namely, the electrical connection between the chip and the pins is realized through metal bonding wires, the height of the metal bonding wires is a very critical parameter and cannot be too high, otherwise, problems are easy to occur in the subsequent plastic packaging process, and therefore, after the wire bonding is finished, the arc height of the metal bonding wires needs to be measured.
In the prior art, the highest point of a wire arc of a metal welding wire is found by manually using a high power microscope, then an instrument is used for measuring the height value of the highest point of the wire arc, and the highest point of the wire arc is inaccurately positioned during operation possibly due to the diversity of the shapes of the metal welding wires in actual operation, so that the judgment of the highest point position of the wire arc is wrong, the measured value is inaccurate, wrong information is transmitted to subsequent production, poor wire leakage and the like are easily caused, and the product is scrapped.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a check out test set of chip bonding wire camber can the accurate peak height value that detects bonding wire camber.
The utility model discloses a realize like this: the device for detecting the arc height of the chip metal welding wire comprises a base, a test board, a rotating shaft, a torsion meter and a height pin, wherein the test board is used for placing a product to be detected, the rotating shaft is rotatably arranged on the base, the torsion meter is arranged on the rotating shaft and rotates along with the rotating shaft, and the height pin is arranged on a test shaft of the torsion meter.
The base is provided with a fixing hole, bearings are arranged at the upper end and the lower end of the fixing hole, and the upper portion and the lower portion of the rotating shaft are limited by the bearings.
And the base is also provided with a bearing fixing plate for fixing the bearing.
The torsion meter is characterized in that the rotating shaft is provided with a central hole, the torsion meter is arranged in the central hole, the rotating shaft is provided with a rotation stopping groove, the torsion meter is provided with a rotation stopping block, and the rotation stopping block is embedded into the rotation stopping groove.
The detection equipment further comprises a height needle cap, the height needle cap is sleeved on the test shaft of the torsion meter, and the height needle is arranged on the outer peripheral surface of the height needle cap.
The peripheral surface of the height needle cap is provided with a plurality of height needles with different heights.
The torsion meter is a digital torsion meter, the detection equipment further comprises a status indicator lamp, and the status indicator lamp is used for indicating the current detection status.
The detection equipment further comprises a motor, the motor is fixed on the base, and the motor is used for driving the rotating shaft to rotate.
The beneficial effects of the utility model are that: the principle of the detection equipment for the arc height of the metal bonding wire of the chip is as follows: placing a chip to be detected on a test board, fixing the chip, selecting a proper height needle, arranging the height needle on a test shaft of a torsion meter, and finally rotating the torsion meter, wherein the test shaft of the torsion meter and the height needle rotate along with the torsion meter, because the length of the height needle can cover the whole length of the metal welding wire, if the highest point of a wire arc is lower than the height needle, the height needle can pass through smoothly without any blockage, and the torsion count value is displayed to be zero, which indicates that the wire arc height of the metal welding wire is qualified; if the highest point of the arc is higher than the height needle, the height needle cannot pass through smoothly and can be blocked by the metal welding line, the torsion meter can display a certain numerical value, the numerical value is in positive correlation with the highest point of the arc, and the larger the highest point of the arc is, the larger the measured numerical value is. When the value is larger than a set standard value (empirical value), the height of the wire arc of the metal welding wire is considered to be too high, and the metal welding wire is not qualified. The longer the height needle is, the longer the arm of force is, the same resistance force is, the larger the value displayed on the torsion meter is, so the height needle should be long enough to amplify the effect of the measured value. The method and the device avoid the vulnerability of peak misjudgment caused by inaccurate positioning of the highest point of the manual detection line arc, and ensure the accuracy of arc height measurement.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the device for detecting the camber of the metal bonding wire of the chip according to the present invention;
FIG. 2 is a front view of an embodiment of the apparatus for detecting the camber of a metal bond wire of a chip according to the present invention;
FIG. 3 is a side view of an embodiment of the apparatus for detecting the wire height of a chip bonding pad according to the present invention;
FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;
FIG. 5 is a perspective view of an embodiment of the apparatus for detecting the arc height of a metal bonding wire of a chip according to the present invention;
fig. 6 is a cross-sectional exploded view of the embodiment of the device for detecting the arc height of the metal bonding wire of the chip of the present invention.
Wherein, 1, a base; 11. a fixing hole; 2. a test bench; 3. a rotating shaft; 31. a central bore; 32. a rotation stopping groove; 4. a torsion meter; 41. testing the shaft; 42. a rotation stopping block; 5. a height pin; 6. a bearing; 7. a bearing fixing plate; 8. a height needle cap; 100. detecting a product to be detected; 101. and (6) welding a metal wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As chip metal bonding wire arc height's check out test set's embodiment, as shown in fig. 1 to 6, including base 1, testboard 2, pivot 3, torsion meter 4 and high needle 5, testboard 2 is used for placing and waits to detect product 100, pivot 3 sets up on base 1 rotatoryly, torsion meter 4 sets up in pivot 3 to it is rotatory to follow pivot 3, high needle 5 sets up on torsion meter 4's test axle 41.
The principle of the equipment for detecting the arc height of the chip metal bonding wire is as follows: placing a chip to be detected on a test bench 2, fixing the chip, selecting a proper height pin 5, arranging the height pin 5 on a test shaft 41 of a torsion meter 4, finally rotating the torsion meter 4, wherein the test shaft 41 of the torsion meter 4 and the height pin 5 rotate along with the torsion meter 4, because the length of the height pin 5 can cover the whole length of the metal welding wire 101, if the highest point of a wire arc is lower than the height pin 5, the height pin 5 can pass through smoothly without any blockage, and the numerical value of the torsion meter 4 is displayed to be zero, which indicates that the wire arc height of the metal welding wire 101 is qualified; if the highest point of the arc is higher than the height needle 5, the height needle 5 cannot pass through smoothly and is blocked by the metal welding line 101, the torsion meter 4 displays a certain numerical value, the numerical value is in positive correlation with the highest point of the arc, and the larger the highest point of the arc is, the larger the measured numerical value is. When the value is larger than a predetermined standard value (an empirical value, which is used to detect whether the measured arc height data is within the safety value range according to different standard values of the package format), the wire loop height of the metal bonding wire 101 is considered to be too high and is not qualified. The longer the height needle 5, the longer the arm of force, and the larger the resistance, the larger the value displayed on the torsion meter 4, so the height needle 5 should be long enough to obtain the effect of magnifying the measured value. The method and the device avoid the vulnerability of peak misjudgment caused by inaccurate positioning of the highest point of the manual detection line arc, and ensure the accuracy of arc height measurement.
In this embodiment, be equipped with fixed orifices 11 on base 1, both ends all are equipped with bearing 6 about fixed orifices 11, the upper portion and the lower part of pivot 3 are injectd by bearing 6, still be equipped with bearing fixing plate 7 on the base 1 for fixed bearing 6. By adopting a double-bearing structure, the movement precision and the movement fluency of the rotating shaft 3 can be ensured, and the high-precision foundation of equipment can be ensured.
In this embodiment, the rotating shaft 3 is provided with a central hole 31, the torsion meter 4 is disposed in the central hole 31, the rotating shaft 3 is provided with a rotation stopping groove 32, the torsion meter 4 is provided with a rotation stopping block 42, and the rotation stopping block 42 is embedded in the rotation stopping groove 32. The torsion meter 4 is conveniently installed on the rotating shaft 3, and is used for ensuring that the torsion meter 4 can rotate along with the rotating shaft 3.
In this embodiment, the detection apparatus further includes a height pin cap 8, the height pin cap 8 is fitted over the test shaft 41 of the torsion meter 4, and the height pins 5 are provided on the outer peripheral surface of the height pin cap 8. The peripheral surface of the height needle cap 8 is provided with a plurality of height needles 5 with different heights. Thus, the needle cap 8 can detect a plurality of heights without frequently replacing the height needle 5.
In the present embodiment, the torsion meter 4 is a digital torsion meter, and the detection apparatus further includes a status indicator lamp (not shown) for indicating a current detection status, such as a green light when the test is passed and a red light when the test is not passed.
The utility model discloses in, check out test set can also include the motor, the motor is fixed on the base, it is rotatory that the motor is used for driving the pivot, just so does not need the manual work to rotate the pivot, only needs to press the start key, just can a key test, and degree of automation is higher, reduces the influence of human factor to measuring result.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (8)
1. The device for detecting the camber of the chip metal welding wire is characterized by comprising a base, a test board, a rotating shaft, a torsion meter and a height needle, wherein the test board is used for placing a product to be detected, the rotating shaft is rotationally arranged on the base, the torsion meter is arranged on the rotating shaft and rotates along with the rotating shaft, and the height needle is arranged on a test shaft of the torsion meter.
2. The apparatus for detecting the camber of a metal bonding wire on a chip according to claim 1, wherein the base has a fixing hole, bearings are disposed at upper and lower ends of the fixing hole, and the upper and lower portions of the rotating shaft are defined by the bearings.
3. The apparatus for detecting the arc height of metal bonding wires on a chip according to claim 2, wherein a bearing fixing plate is further disposed on the base for fixing the bearing.
4. The apparatus for detecting chip metal bonding wire camber according to claim 1, wherein the shaft has a central hole, the torsion meter is disposed in the central hole, the shaft has a rotation stopping groove, the torsion meter has a rotation stopping block, and the rotation stopping block is embedded in the rotation stopping groove.
5. The apparatus for detecting the camber of a metal bonding wire of a chip according to claim 1, further comprising a height pin cap, wherein the height pin cap is disposed on the testing shaft of the torsion meter, and the height pin is disposed on the outer peripheral surface of the height pin cap.
6. The apparatus for detecting the camber of a chip metal bonding wire according to claim 5, wherein the height pin cap has a plurality of height pins with different heights on the outer peripheral surface thereof.
7. The apparatus for detecting chip metal wire camber according to claim 1, wherein the torsion meter is a digital torsion meter, and the apparatus further comprises a status indicator for indicating a current detection status.
8. The apparatus for detecting the arc height of metal bonding wires on a chip according to claim 7, further comprising a motor fixed on the base, wherein the motor is used for driving the rotation shaft to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789547.0U CN217764805U (en) | 2022-07-11 | 2022-07-11 | Chip metal bonding wire arc height detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789547.0U CN217764805U (en) | 2022-07-11 | 2022-07-11 | Chip metal bonding wire arc height detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217764805U true CN217764805U (en) | 2022-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221789547.0U Active CN217764805U (en) | 2022-07-11 | 2022-07-11 | Chip metal bonding wire arc height detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217764805U (en) |
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2022
- 2022-07-11 CN CN202221789547.0U patent/CN217764805U/en active Active
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