CN213519894U

CN213519894U - Fine wire bonding riving knife

Info

Publication number: CN213519894U
Application number: CN202023188186.8U
Authority: CN
Inventors: 秦可勇; 徐鲲鹏
Original assignee: Jiangsu Haiyisheng Technology Co ltd
Current assignee: Jiangsu Haiyisheng Technology Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-06-22
Anticipated expiration: 2030-12-26

Abstract

The utility model provides a fine rule bonding riving knife relates to semiconductor packaging technical field. This fine rule bonding riving knife includes tool bit, income wire casing, metallic channel and wire, the inside wire assembly that is provided with of tool bit, wire assembly includes wire groove and swash plate, swash plate fixed connection is in the tool bit bottom, tool bit bottom one side fixedly connected with bonding plate, the bonding plate sets up in swash plate one side, the inside ultrasonic wave pipe that is provided with of tool bit, ultrasonic wave socle end fixedly connected with connecting block, connecting block fixed connection is inside the tool bit, bonding plate one side fixedly connected with second wire piece, the inside first wire piece of wire groove one side fixedly connected with that is close to of tool bit. This fine rule bonding riving knife is favorable to the metal wire to pull and protects the metal wire when welding, prevents to draw the arc line after accomplishing first solder joint when the metal wire from causing wearing and tearing inside the tool bit, influences the chip quality.

Description

Fine wire bonding riving knife

Technical Field

The utility model relates to a semiconductor package technical field specifically is a fine rule bonding riving knife.

Background

The connection between the chip and the external pins inside the semiconductor package plays an important role in establishing the electrical connection between the chip and the outside and ensuring the smooth input/output between the chip and the outside, and is a key in the whole subsequent packaging process. Wire bonding is predominantly used in connection methods with simple process implementation, low cost, and applicability to a variety of packaging formats. Wire bonding is one of the primary interconnect technologies in a package.

According to the utility model with the application number of CN202020458746.8, the utility model provides a thin wire bonding cleaver, which relates to the technical field of semiconductor packaging, and comprises a knife handle and a knife head, wherein the knife handle and the knife head are integrally formed and are integrally processed; a wire inlet hole groove is formed in the side face of the cutter head, and a lead through hole is obliquely formed in the front end of the cutter head; the end face of the front end of the tool bit consists of a bonding face and a non-bonding face, the included angle between the bonding face and the lead through hole is 20-75 degrees, the non-bonding face is processed into an inclined straight face, a wire outlet groove is transversely processed in the non-bonding face, and the wire outlet groove is close to the lead through hole and is communicated with the lead through hole.

The device is in the seam back of accomplishing first solder joint, needs the tool bit to pull the fine rule high to the position of arc height to drive the fine rule and remove and form the pitch arc, carry out the seam of second solder joint again, at the in-process that the tool bit removed, the fine rule slides with the inside lead wire groove of tool bit, only can reduce the fine rule and be close the wearing and tearing of one section in the removal of welding part, but the wearing and tearing that other positions of fine rule formed in the removal still exist, can cause the influence to chip quality.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a fine rule bonding riving knife to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a fine wire bonding riving knife comprises a knife head, a wire inlet groove, a wire groove and a metal wire, wherein the wire inlet groove is formed in the front end of the interior of the knife head, the wire groove is obliquely machined in the interior of the knife head, the top end of the wire groove is communicated with one end, located in the interior of the knife head, of the wire inlet groove, the metal wire is connected to the wire inlet groove and the interior of the wire groove in a sliding mode, and a wire component is arranged in the interior of the knife head;

wire assembly includes wire groove and swash plate, the wire groove is seted up in the inside bottom of tool bit, wire groove top is kept away from with the wire groove and is linked together into wire groove one end, swash plate fixed connection is in the tool bit bottom, tool bit bottom one side fixedly connected with bonding plate, the bonding plate sets up in swash plate one side, the inside ultrasonic wave pipe that is provided with of tool bit, ultrasonic wave pipe run through the tool bit and with tool bit fixed connection, ultrasonic wave socle end fixedly connected with connecting block, connecting block fixed connection is inside the tool bit, bonding plate one side fixedly connected with second wire piece, the inside first wire piece of wire groove one side fixedly connected with that is close to of tool bit.

Preferably, a protective layer is fixedly connected to one side inside the wire groove, and the protective layer extends to one side inside the wire inlet groove.

Preferably, the top end of the protective layer is an arc surface, and the protective layer is made of high polymer materials.

Preferably, the cross-sectional shapes of the first lead block and the second lead block are both arc surfaces, and the first lead block corresponds to the second lead block in position.

Preferably, the top of the tool bit is fixedly connected with a tool handle, and the tool bit and the tool handle are integrally machined and formed.

Preferably, the top cross-sectional shape of the communication part between the wire inlet groove and the wire guide groove is an arc surface.

Preferably, a through hole is formed in the inclined plate and corresponds to the bottom end of the wire outlet groove.

The utility model provides a fine rule bonding riving knife, its beneficial effect who possesses as follows:

1. this fine rule bonding riving knife passes through the fastener to be fixed the metal wire, the fastener drives the metal wire and removes and with the leading-in wire casing inside of metal wire, the metal wire gets into inside the wire casing through going into the wire casing, the metal wire gets into inside the wire casing and extends the tool bit outside, when the tool bit removed the pad top, the tool bit descends and drives the metal wire decline, the tool bit descends and drives the bonding board decline, the cross-section of second wire piece sets up to the arc, be favorable to preventing that the bonding board from making the metal wire wearing and tearing at the in-process that pushes down, ultrasonic wave pipe transmission ultrasonic wave energy closes the metal wire seam on the pad.

2. This fine rule bonding riving knife is after accomplishing first solder joint, the tool bit drives the wire and rises to the arc height position, remove the formation pitch arc again, at the tool bit in-process that rises, the inside top of wire casing of wire laminating, the tool bit can make the wire laminating go into wire casing and the inside both sides of wire casing when removing simultaneously, because the cross sectional shape of going into wire casing and wire casing intercommunication department sets up to the cambered surface, be favorable to preventing the wire wearing and tearing at the operation in-process, influence the chip quality, and the cross-section of first wire piece sets up to the cambered surface, when the wire pastes and pastes first wire piece and slides, resistance when can reducing the wire and slide, reduce wearing and tearing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of a partial structure of the tool bit of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention.

In the figure: 1. a cutter head; 2. a wire inlet groove; 3. a wire guide groove; 4. an outlet groove; 5. a sloping plate; 6. a key board; 7. a first lead block; 8. a second lead block; 9. an ultrasonic wave tube; 10. connecting blocks; 11. a protective layer; 12. a knife handle; 13. a metal wire.

Detailed Description

The embodiment of the utility model provides a fine rule bonding riving knife, as shown in figure 1-4, including tool bit 1, wire inlet groove 2, metallic channel 3 and metallic wire 13, tool bit 1 top fixedly connected with handle of a knife 12, tool bit 1 and handle of a knife 12 integration machine-shaping, wire inlet groove 2 sets up in tool bit 1 inside front end, metallic channel 3 slope processing is inside tool bit 1, the top of metallic channel 3 is linked together with wire inlet groove 2 is located tool bit 1 inside one end, metallic wire 13 sliding connection is in wire inlet groove 2 and metallic channel 3 inside, the overlook cross-sectional shape of the intercommunication department of wire inlet groove 2 and metallic channel 3 sets up to the cambered surface, be favorable to protecting metallic wire 13 when tool bit 1 removes, one side fixedly connected with inoxidizing coating 11 inside metallic channel 3, inoxidizing coating 11 extends to wire inlet groove 2 one side inside, be favorable to protecting metallic wire 13, inoxidizing coating 11 top sets up to the, the protective layer 11 is made of high polymer materials, so that the abrasion of the metal wire 13 is reduced, and a wire assembly is arranged in the cutter head 1;

the wire assembly comprises a wire outlet groove 4 and an inclined plate 5, the wire outlet groove 4 is arranged at the bottom end inside the tool bit 1, the top end of the wire outlet groove 4 is communicated with one end of the wire outlet groove 3 far away from the wire inlet groove 2, the inclined plate 5 is fixedly connected with the bottom end of the tool bit 1, one side of the bottom end of the tool bit 1 is fixedly connected with a bonding plate 6, the bonding plate 6 is arranged at one side of the inclined plate 5, a through hole is arranged inside the inclined plate 5 and corresponds to the bottom end of the wire outlet groove 4, an ultrasonic wave tube 9 is arranged inside the tool bit 1, the ultrasonic wave tube 9 penetrates through the tool bit 1 and is fixedly connected with the tool bit 1, the bottom end of the ultrasonic wave tube 9 is fixedly connected with a connecting block 10, the connecting block 10 is fixedly connected inside the tool bit 1, one side of the bonding plate 6 is fixedly connected with a second wire block 8, one side inside the tool bit 1, it is advantageous to protect the metal line 13.

The implementation mode is specifically as follows: fix metal wire 13 through the fastener, the fastener drives metal wire 13 and removes and inside leading-in wire casing 2 with metal wire 13, because wire casing 2 is linked together with metallic channel 3, metal wire 13 gets into metallic channel 3 inside through wire casing 2, and wire groove 4 has been seted up to 1 inside bottom of tool bit, 3 bottom of metallic channel is linked together with wire groove 4, metal wire 13 gets into wire groove 4 inside and extends the tool bit 1 outside, when tool bit 1 moves to the pad top, 1 descends and drives metal wire 13 and descend of tool bit 1, tool bit 1 descends and drives bonding board 6 and descend, because bonding board 6 one side fixedly connected with second wire piece 8, the cross-section of second wire piece 8 sets up to the arc, be favorable to preventing bonding board 6 from making metal wire 13 wearing and tearing at the in-process that pushes down, ultrasonic wave tube 9 transmits ultrasonic wave energy and welds metal wire 13 on the pad.

In addition, after the first welding point is finished, the cutter head 1 drives the metal wire 13 to ascend to the arc height position and then moves to form an arc line, in the ascending process of the cutter head 1, the metal wire 13 is attached to the top end inside the wire guide groove 3, meanwhile, the cutter head 1 can enable the metal wire 13 to be attached to two sides inside the wire guide groove 2 and the wire guide groove 3 when moving, because the cross section of the connection part of the wire guide groove 2 and the wire guide groove 3 is set to be an arc surface, the abrasion of the metal wire 13 in the operation process is favorably prevented, the quality of a chip is influenced, in addition, the cross section of the first wire block 7 is set to be the arc surface, when the metal wire 13 is attached to the first wire block 7 and slides, the resistance when the metal wire 13 slides can be reduced, the abrasion is reduced, meanwhile, one side inside the wire guide groove 3 is fixedly connected with the protective layer 11, the protective layer 11, the inoxidizing coating 11 adopts macromolecular material to make to one section of inoxidizing coating 11 sets up to the cambered surface, is favorable to protecting metal wire 13, and this structure is favorable to pulling metal wire 13 and protects metal wire 13 when welding, prevents that metal wire 13 from causing wearing and tearing in tool bit 1 inside when accomplishing first solder joint back arc line, influences the chip quality.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fine rule bonding riving knife, includes tool bit (1), income wire casing (2), metallic channel (3) and wire (13), go into wire casing (2) and offer in the inside front end of tool bit (1), wire casing (3) slope processing is inside tool bit (1), wire casing (3) top and income wire casing (2) are located the inside one end of tool bit (1) and are linked together, inside metallic channel (13) sliding connection in income wire casing (2) and metallic channel (3), its characterized in that: a wire guide assembly is arranged inside the cutter head (1);

the lead assembly comprises a lead-out groove (4) and an inclined plate (5), the lead-out groove (4) is arranged at the bottom end inside the cutter head (1), the top end of the wire outlet groove (4) is communicated with one end of the wire groove (3) far away from the wire inlet groove (2), the inclined plate (5) is fixedly connected with the bottom end of the tool bit (1), one side of the bottom end of the tool bit (1) is fixedly connected with a bonding plate (6), the key plate (6) is arranged on one side of the inclined plate (5), the tool bit (1) is internally provided with an ultrasonic wave tube (9), the ultrasonic wave tube (9) penetrates through the cutter head (1) and is fixedly connected with the cutter head (1), the bottom end of the ultrasonic wave tube (9) is fixedly connected with a connecting block (10), the connecting block (10) is fixedly connected inside the cutter head (1), plywood (6) one side fixedly connected with second wire piece (8), tool bit (1) is inside to be close to first wire piece (7) of outlet groove (4) one side fixedly connected with.

2. A thin wire bonding riving knife according to claim 1 wherein: the wire casing (3) inside one side fixedly connected with inoxidizing coating (11), inoxidizing coating (11) extend to income wire casing (2) inside one side.

3. A thin wire bonding riving knife according to claim 2 wherein: the top end of the protective layer (11) is an arc surface, and the protective layer (11) is made of high polymer materials.

4. A thin wire bonding riving knife according to claim 1 wherein: the cross section shapes of the first lead block (7) and the second lead block (8) are both arc surfaces, and the first lead block (7) corresponds to the second lead block (8).

5. A thin wire bonding riving knife according to claim 1 wherein: the tool bit is characterized in that a tool shank (12) is fixedly connected to the top of the tool bit (1), and the tool bit (1) and the tool shank (12) are integrally machined and formed.

6. A thin wire bonding riving knife according to claim 1 wherein: the overlooking cross section of the communication part of the wire inlet groove (2) and the wire guide groove (3) is an arc surface.

7. A thin wire bonding riving knife according to claim 1 wherein: the inclined plate (5) is internally provided with a through hole which corresponds to the bottom end of the wire outlet groove (4).