CN218109618U - Wedge-shaped cleaver for improving bonding density of wedge-shaped welding - Google Patents
Wedge-shaped cleaver for improving bonding density of wedge-shaped welding Download PDFInfo
- Publication number
- CN218109618U CN218109618U CN202222271883.2U CN202222271883U CN218109618U CN 218109618 U CN218109618 U CN 218109618U CN 202222271883 U CN202222271883 U CN 202222271883U CN 218109618 U CN218109618 U CN 218109618U
- Authority
- CN
- China
- Prior art keywords
- wedge
- bonding
- lead
- transition
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Wire Bonding (AREA)
Abstract
The utility model discloses a wedge-shaped chopper for improving wedge-shaped welding bonding density, which comprises a cutter head, wherein the cutter head is provided with a bonding surface, a lead hole, a first transition surface and a first connecting surface; the first transition surface and the bonding surface are arranged at an included angle, the first connecting surface and the first transition surface are communicated through the lead hole, and the first connecting surface and the first transition surface are connected through the outer side wall of the lead hole; the outer side wall is of a plane structure, the lead hole is provided with a straight line section, and the outer side wall is parallel to a central axis of the straight line section. The utility model has the advantages of wedge-shaped welding bonding technology suitable for high density, many solder joints, narrow interval.
Description
Technical Field
The utility model relates to a microelectronics packaging technology field especially relates to a wedge chopper for improving wedge weld bond density.
Background
At present, in the field of integrated circuit packaging, a wedge bonding process is usually adopted for connection between a circuit chip and a peripheral circuit, i.e., a wedge-shaped chopper is used for guiding a gold wire or an aluminum wire to connect the circuit chip and the peripheral circuit, and ultrasonic vibration is matched to complete electrical interconnection.
However, with the integration and miniaturization of chips, the welding point density during wedge-shaped welding bonding needs to be further improved, and the existing wedge-shaped chopper cannot smoothly perform wire bonding operation on the wedge-shaped welding bonding process requiring high-density welding points due to the interference of the outer side wall of the lead structure. Specifically, after an operator uses the wedge-shaped chopper to weld a first lead on a first welding point, if the distance between the adjacent second welding point and the first welding point is smaller than the width of half of the tool bit of the wedge-shaped chopper, the outer side wall of the lead hole of the wedge-shaped chopper easily collapses the first lead, so that the existing wedge-shaped chopper is still difficult to be applied to the welding point high-density wedge-shaped welding bonding process.
Disclosure of Invention
The utility model aims to solve the technical problem that a wedge chopper for improving wedge weld bond density is provided, can be applicable to the wedge weld bond technology of high density, many solder joints, narrow interval.
In order to solve the technical problem, the utility model provides a wedge chopper for improving wedge welding bonding density, which comprises a cutter head, wherein the cutter head is provided with a bonding surface, a lead hole, a first transition surface and a first connecting surface;
the first transition surface and the bonding surface are arranged at an included angle, the first connecting surface and the first transition surface are communicated through the lead hole, and the first connecting surface and the first transition surface are connected through the outer side wall of the lead hole;
the outer side wall is of a plane structure, the lead hole is provided with a straight line section, and the outer side wall is parallel to the central axis of the straight line section.
Preferably, the thickness of the outer side wall is 5-20 μm, and an angle between an extension line of the central axis of the straight line segment and an extension line of the bonding surface is 40-80 degrees.
Preferably, the lead hole is provided with a tapered inlet end communicated with the straight line section, the tapered inlet end is communicated with the first connecting surface, and the diameter of the tapered inlet end gradually increases from the communication position of the tapered inlet end and the straight line section to the direction of the first connecting surface.
Preferably, a lead passes through the first connection surface, the lead hole and the first transition surface in sequence, and the diameter of the straight line section is 5-10 μm larger than that of the lead.
Preferably, the bonding surface is provided with a second transition surface, one end of the second transition surface is connected with the bonding surface, the second transition surface and the bonding surface are arranged at an included angle, the other end of the second transition surface is connected with the first transition surface, and the second transition surface and the first transition surface are arranged at a right angle.
Preferably, a bonding groove is formed in the bonding surface, a guide groove is further formed in the tool bit, the guide groove is close to the bonding surface, and the first transition surface and the second transition surface are both located in the guide groove; the exit ends of the lead holes are located on the first transition surface so that the exit ends of the lead holes are located in the guide groove.
Preferably, the bonding surface and the outer side wall are connected through a guide surface, and the guide groove is formed by recessing the guide surface into the tool bit.
Preferably, a guide arc surface is arranged at the joint of the guide groove and the bonding surface, and the second transition surface is connected with the bonding surface through the guide arc surface.
Preferably, the wedge-shaped riving knife for improving the bonding density of the wedge-shaped welding further comprises a knife handle interconnected with the knife head, the knife handle is provided with a second connecting surface and a lead channel, the second connecting surface is connected with the first connecting surface, the second connecting surface and the first connecting surface are arranged at an included angle, and the outlet end of the lead channel is located on the second connecting surface.
Preferably, the second connection surface and the first connection surface are arranged at a right angle to each other, the lead channel includes a first lead section and a second lead section which are communicated with each other, the first lead section is located at the lower portion of the second lead section, the diameter of the first lead section is smaller than that of the second lead section, and the outlet end of the first lead section is located on the second connection surface.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses a first transition face with the bonding face is the contained angle setting each other, first connection face with first transition face passes through the pin hole is linked together, and the lead wire passes first transition face via the pin hole by first connection face to stretch into the bonding face from first transition face on, through the many places of tool bit are buckled to play spacing and the guide effect to the lead wire.
The outer side wall is of a planar structure, the lead hole is provided with a straight line section, the outer side wall is parallel to the central axis of the straight line section, and the outer side wall can avoid a bonded lead in the lead bonding process by adopting the planar structure and being parallel to the central axis of the straight line section, so that the wedge-shaped cleaver can be suitable for the wedge-shaped welding bonding process with high density, multiple welding points and narrow space.
Drawings
FIG. 1 is a block diagram of a wedge-shaped riving knife for increasing the bonding density of a wedge weld in accordance with one embodiment of the present invention;
FIG. 2 is a cross-sectional view of the wedge-shaped riving knife shown in FIG. 1 for increasing the bonding density of the wedge weld;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a cross-sectional view of a wedge chopper for increasing wedge weld bonding density as described in another embodiment of the present invention;
fig. 5 is a partially enlarged view of fig. 4 at B.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside equidirectional wording that appears or will appear in the text only uses the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
With reference to fig. 1 to 5, an embodiment of the present invention provides a wedge-shaped chopper for improving wedge-shaped welding bonding density, which includes a tool bit 1, wherein the tool bit 1 is provided with a bonding surface 11, a wire hole 12, a first transition surface 13, and a first connection surface 14.
The utility model discloses a first transition face 13 with bonding face 11 each other is the contained angle setting, first connection face 14 with first transition face 13 passes through pin hole 12 is linked together, and the lead wire passes first transition face 13 through pin hole 12 by first connection face 14 to on stretching into bonding face 11 from first transition face 13, through 1 many places of tool bit are buckled, in order to play spacing and the guide effect to the lead wire.
The first connection surface 14 and the first transition surface 13 are connected through an outer side wall 121 of the wire hole 12, the outer side wall 121 is of a planar structure, the wire hole 12 is provided with a straight line segment 122, the outer side wall 121 is parallel to a central axis of the straight line segment 122, and by adopting the planar structure and the central axis of the straight line segment 122, the outer side wall 121 can avoid a bonded lead in a lead bonding process, so that the wedge-shaped riving knife can be applied to a wedge-shaped welding bonding process with high density, multiple welding points and narrow spacing.
Specifically, the thickness of lateral wall 121 is 5 ~ 20 mu m, compares the thickness of past wire hole 12 lateral wall 121, the embodiment of the utility model provides an outer wall 121 thickness of wire hole 12 is littleer to the effect is dodged in the realization, avoids collapsing the lead wire that has bonded. Furthermore, the extension line of the central axis of the straight line segment 122 and the extension line of the bonding surface 11 mutually form an included angle of 40-80 degrees, so that an operator can observe the lead penetrating out from the outlet end of the lead hole 12 on the premise that the outer side wall 121 can be kept away from the bonded lead, and the precision of the wedge-shaped welding bonding process is ensured.
Furthermore, as an embodiment, the thickness of the outer sidewall 121 is 10 μm, and an angle between an extension line of the central axis of the straight line segment 122 and an extension line of the bonding surface 11 is 60 degrees, so as to ensure that an operator can observe a lead passing through the exit end of the lead hole 12 more conveniently while the outer sidewall 121 is not easy to press a bonded lead, so that the wedge-shaped welding bonding process can achieve better precision.
Preferably, the lead hole 12 is provided with a tapered inlet end 123 communicating with the straight line section 122, the tapered inlet end 123 is communicated with the first connecting surface 14, so that the lead enters the lead hole 12 from the tapered inlet end 123, and the diameter of the tapered inlet end 123 gradually increases from the communication part of the tapered inlet end 123 and the straight line section 122 to the direction of the first connecting surface 14, which not only plays a role of guiding the lead, but also is not easy to affect the thickness and the influence of the outer sidewall 121.
It should be noted that, in order to ensure the guiding and limiting function of the lead, the diameter of the straight line segment 122 is 5 to 10 μm larger than the diameter of the lead.
Preferably, with reference to fig. 2 and fig. 3, as an embodiment, a second transition surface 15 is disposed on the bonding surface 11, one end of the second transition surface 15 is connected to the bonding surface 11, the second transition surface 15 and the bonding surface 11 form an included angle, the other end of the second transition surface 15 is connected to the first transition surface 13 to perform a transition function, and the second transition surface 15 and the first transition surface 13 form a right angle, so that the wedge-shaped riving knife can further avoid a bonded lead when performing wedge bonding. Wherein the angle between the second transition surface 15 and the bonding surface 11 may be 120 °.
On the other hand, with reference to fig. 4 and 5, as another embodiment, a bonding groove 111 is provided on the bonding surface 11, a guide groove 161 is further provided on the tool bit 1, the guide groove 161 is close to the bonding surface 11, and the first transition surface 13 and the second transition surface 15 are both located in the guide groove 161, so that the outlet end of the lead hole 12 located on the first transition surface 13 can be located in the guide groove 161 to play a limiting role, thereby ensuring the accuracy of the wedge-shaped welding bonding process.
Preferably, the bonding surface 11 and the outer side wall 121 are connected by a guide surface 16, and the guide groove 161 is formed by the guide surface 16 recessed into the tool bit 1 to further provide a guiding function. Preferably, a guide arc 162 is provided at a connection position of the guide groove 161 and the bonding surface 11, and the second transition surface 15 is connected with the bonding surface 11 through the guide arc 162, so that the lead can be smoothly guided into the bonding groove 111 of the bonding surface 11.
More preferably, in this another embodiment, the bonding groove 111 is located at the middle of the bonding surface 11, the radius of the bonding groove 111 is 10 μm, the length of the guiding groove 161 may be 80 μm, the width may be 55 μm, the depth may be 20-40 μm, and the included angle between the connecting end of the guiding arc 162 connecting the bonding surface 11 and the bonding surface 11 may be 15 °.
In addition, with reference to fig. 2 to 5, the wedge-shaped chopper for improving the wedge-shaped bonding density further includes a knife handle 2 interconnected with the knife head 1, in order to enable the lead wire to enter the lead wire hole 12, the knife handle 2 is provided with a second connecting surface 21 and a lead wire channel 22, the second connecting surface 21 is connected with the first connecting surface 14, the second connecting surface 21 and the first connecting surface 14 are arranged at an included angle, an outlet end of the lead wire channel 22 is located on the second connecting surface 21, so that the lead wire can enter the lead wire hole 12 from the knife handle 2 through the lead wire channel 22, and a limiting effect is achieved.
Preferably, said second connection face 21 is arranged at right angles to said first connection face 14, so that the leads enter said tapered entrance end 123 at the first connection face 14 from the second connection face 21. More preferably, the lead channel 22 comprises a first lead segment 221 and a second lead segment 222 which are communicated with each other, the first lead segment 221 is located at the lower part of the second lead segment 222, the diameter of the first lead segment 221 is smaller than that of the second lead segment 222, and the outlet end of the first lead segment 221 is located on the second connecting surface 21, so that an operator can conveniently extend the lead into the second lead segment 222 with a larger diameter and limit and guide the lead through the first lead segment 221 with a smaller diameter. It should be noted that, in one embodiment, the diameter of the second lead segment 222 may be a cylindrical structure of 0.43mm, and the diameter of the first lead segment 221 may be a cylindrical structure of 0.24 mm; in another embodiment, the second lead segment 222 may have a cylindrical structure with a diameter of 0.43mm, and the first lead segment 221 may have a cylindrical structure with a diameter of 0.25 mm.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A wedge-shaped cleaver for improving the bonding density of wedge-shaped welding comprises a cutter head and is characterized in that the cutter head is provided with a bonding surface, a lead hole, a first transition surface and a first connecting surface;
the first transition surface and the bonding surface are arranged at an included angle, the first connecting surface and the first transition surface are communicated through the lead hole, and the first connecting surface and the first transition surface are connected through the outer side wall of the lead hole;
the outer side wall is of a plane structure, the lead hole is provided with a straight line section, and the outer side wall is parallel to a central axis of the straight line section.
2. The wedge chopper for increasing the bonding density of wedge welds of claim 1, wherein the thickness of the outer sidewall is 5 to 20 μm, and the extension of the central axis of the straight line segment and the extension of the bonding surface are arranged at an angle of 40 to 80 degrees with respect to each other.
3. The wedge-shaped riving knife for increasing the bonding density of wedge welds as claimed in claim 1 wherein said wire holes have tapered inlet ends communicating with said straight segments, said tapered inlet ends communicating with said first connection face and said tapered inlet ends having diameters that gradually increase from the location where said tapered inlet ends communicate with the straight segments toward said first connection face.
4. The wedge-shaped riving knife for increasing wedge-bond density of claim 1 wherein a wire is threaded through said first connection face, said wire hole and said first transition face in sequence, said straight segment having a diameter 5-10 μm greater than said wire diameter.
5. The wedge chopper for increasing the bonding density of wedge welds as claimed in claim 1, wherein said bonding surface is provided with a second transition surface, one end of said second transition surface is connected to said bonding surface, and said second transition surface and said bonding surface are disposed at an angle to each other, and the other end of said second transition surface is connected to said first transition surface, and said second transition surface and said first transition surface are disposed at a right angle to each other.
6. The wedge chopper for increasing the bonding density of wedge welds as claimed in claim 5, wherein a bonding groove is formed on the bonding surface, a guiding groove is further formed on the tool bit, the guiding groove is close to the bonding surface, and the first transition surface and the second transition surface are both located in the guiding groove; the exit ends of the lead holes are located on the first transition surface such that the exit ends of the lead holes are located within the guide groove.
7. Wedge-shaped riving knife for increasing the bonding density of wedge welds as claimed in claim 6, wherein said bonding surface and said outer side wall are connected by a guide surface, said guide groove being formed by said guide surface being recessed into said cutting head.
8. The wedge chopper for increasing the bonding density of wedge welds as claimed in claim 7, wherein a guiding arc surface is provided at a junction of the guiding groove and the bonding surface, and the second transition surface is connected with the bonding surface through the guiding arc surface.
9. The wedge-shaped chopper for increasing wedge-shaped bond density as recited in claim 1, further comprising a handle interconnected to said tool head, said handle having a second connecting surface and a wire passage, said second connecting surface being connected to said first connecting surface, said second connecting surface being disposed at an angle relative to said first connecting surface, said wire passage having an outlet end disposed on said second connecting surface.
10. The wedge cleaver for increasing wedge bond density as recited in claim 9 wherein said second coupling surface is disposed at a right angle to said first coupling surface, said wire channel comprises a first lead segment and a second lead segment in communication, said first lead segment is disposed below said second lead segment, said first lead segment has a diameter less than a diameter of said second lead segment, and an exit end of said first lead segment is disposed on said second coupling surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222271883.2U CN218109618U (en) | 2022-08-26 | 2022-08-26 | Wedge-shaped cleaver for improving bonding density of wedge-shaped welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222271883.2U CN218109618U (en) | 2022-08-26 | 2022-08-26 | Wedge-shaped cleaver for improving bonding density of wedge-shaped welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218109618U true CN218109618U (en) | 2022-12-23 |
Family
ID=84528162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222271883.2U Active CN218109618U (en) | 2022-08-26 | 2022-08-26 | Wedge-shaped cleaver for improving bonding density of wedge-shaped welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218109618U (en) |
-
2022
- 2022-08-26 CN CN202222271883.2U patent/CN218109618U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2398613B1 (en) | Cutting tool and cutting insert with fluid flow structures | |
| US20090120261A1 (en) | Die and die device | |
| US7407080B2 (en) | Wire bond capillary tip | |
| US10562127B2 (en) | Ribbon bonding tools, and methods of designing ribbon bonding tools | |
| CN218109618U (en) | Wedge-shaped cleaver for improving bonding density of wedge-shaped welding | |
| CN215919404U (en) | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency | |
| CN112775628A (en) | Wedge-shaped riving knife for wire bonding and processing method thereof | |
| EP2277648A1 (en) | Deep-hole boring drill head | |
| US8141765B2 (en) | Cutting blade for a wire bonding system | |
| CN218123354U (en) | Wedge-shaped riving knife for thick wire deep cavity bonding | |
| CN112786470A (en) | Wedge-shaped riving knife for bonding strips and machining method thereof | |
| US20040011848A1 (en) | Bonding tool and wire bonder | |
| CN113770501B (en) | Wedge-shaped cleaver structure for improving bonding density of lead | |
| US20060078393A1 (en) | Cutting improvement structure for a drill | |
| CN217691061U (en) | Superfine spacing welding chopper for full-automatic wire welding machine | |
| CN218109725U (en) | Wedge-shaped cleaver used in narrow bonding environment | |
| CN211759353U (en) | Micro-electronic micro-connection deep cavity welding brazing chopper | |
| CN215008143U (en) | Cleaver for wire bonding | |
| CN212967605U (en) | Wedge welding chopper | |
| JP7412998B2 (en) | Semiconductor device and semiconductor device manufacturing method | |
| CN116053151B (en) | Wedge-shaped riving knife with side incoming line | |
| CN220829929U (en) | Bonding chopper | |
| KR101493596B1 (en) | Drill structure | |
| JP2003019614A (en) | Twist drill having oil hole | |
| CN220679468U (en) | Self-centering drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |