Needle-tube-shaped tool for removing redundant materials on surface of chip
By using a needle-like tool to remove foreign matter from the chip surface with polyamide filaments, the problems of damage and high cost in traditional methods are solved, achieving efficient and low-cost foreign matter removal and improving the quality and reliability of electronic components.
Patent Information
- Application Number
- CN202520143027.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing technologies often damage the chip and bonding wires when removing foreign matter from the chip surface, and also have the problem of high cost.
Using a needle-like tool, fine polyamide filaments are used to remove foreign matter. The tool is flexibly designed, and each component is reusable. The fine filaments are soft and do not damage the chip or bonding wires, and the cost is low.
It effectively avoids damage to chips and bonding wires, improves the performance parameters and pass rate of electronic components, reduces usage costs, and enhances overall quality and reliability.
Smart Images
Figure CN223844226U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electronic component technology and relates to a needle-shaped tool for removing excess material from the surface of a chip. Background Technology
[0002] Before and after bonding chips, electronic components require the removal of foreign matter from the chip insertion and bonding areas. Current removal processes use nitrogen purging, chip adhesive bonding, and gold wire to remove surface foreign matter. However, even after purging and bonding, some stubborn foreign matter still accumulates. After bonding, chip adhesive is not convenient to use due to space constraints. When using gold wire for removal, its hardness can easily damage other bonding wires in the cavity and cause some degree of puncture to the chip surface plating. In addition, using gold wire also increases costs.
[0003] Electronic components have very high requirements for the performance parameters of chips and bonding wires. Chips and bonding wires cannot have functional damage or foreign matter accumulation. Even after purging and bonding, there is still a relatively stubborn accumulation of foreign matter. Using gold wire can also easily cause varying degrees of damage, which seriously affects the performance parameters of electronic components.
[0004] Therefore, there is an urgent need to develop a new tool for removing foreign matter from the chip surface. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a needle-like tool for removing foreign matter from the surface of a chip and its method of use, so as to solve the problem of removing foreign matter from the surface of electronic component chips and bonding wires.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A needle-like tool for removing excess material from the surface of a chip includes a sleeve, a piston rod, a needle, and a filament. The needle is detachably connected to one end of the sleeve, and the piston rod is slidably inserted into the sleeve from the end of the sleeve away from the needle.
[0008] One end of the filament is inserted through the needle and into the inside of the tube, and is fixed by the clamping action of the piston rod and the tube.
[0009] Furthermore, the cannula includes a tube body and a nipple disposed at one end thereto, the piston rod includes a piston shaft and a rubber piston body and a piston handle disposed at both ends of the piston shaft, and the needle includes a needle plug and a needle shaft fixedly connected to the needle plug.
[0010] The needle plug is fitted onto the nipple to connect the needle to one end of the tube. One end of the piston rod, on which a rubber piston body is arranged, is inserted into the end of the tube away from the nipple, and the piston rod is pushed to move axially back and forth by the piston handle.
[0011] Furthermore, the filament is made of polyamide and its length should be sufficient to extend from the tip of the needle shaft into the inside of the tube.
[0012] Furthermore, the filament is long enough to pass through the end of the tube furthest from the needle tip of the needle shaft, so as to facilitate the insertion of the piston rod and the control of the filament.
[0013] Furthermore, a vent hole is provided at the part of the tube body near the nipple.
[0014] Furthermore, the size of the tube body does not exceed φ0.5cm.
[0015] Furthermore, the length of the needle shaft is 1 to 1.5 cm, and the needle shaft is either straight or bent.
[0016] Furthermore, the diameter of the filament is 90 μm, and the needle tip is 32G.
[0017] The beneficial effects of this utility model are as follows:
[0018] Firstly, this invention proposes an innovative needle-like tool, the core of which lies in utilizing fine polyamide filaments to remove excess material from the surface of chips and bonding wires. This fine filament material is soft and will not damage the chip plating or gold wires, effectively solving the damage problems that may occur in traditional gold wire removal methods. This innovative design not only ensures that the performance parameters of electronic components are not affected, but also significantly reduces the probability of product damage and improves overall quality. Compared with traditional methods, this invention performs excellently in protecting chips and bonding wires, ensuring the reliability and stability of electronic components.
[0019] Secondly, the needle-like tool of this invention possesses high flexibility and adaptability. All components of the tool are reusable and easy to replace. In particular, the use of polyamide filaments is not only cheaper than gold wire, but also allows for easy removal of a portion from the needle tip and cutting off the used part with a blade when the filaments are worn out, thereby extending the tool's lifespan and reducing operating costs. This design makes the invention more economical in practical applications and meets the needs of various scenarios.
[0020] Finally, the needle-like tool of this invention does not leave residue or scratch the chip during the removal of excess material. Traditional methods using chip adhesive may result in adhesive residue, which can contaminate the chip surface. The polyamide filaments used in this invention completely avoid this problem, ensuring the cleanliness of the chip surface. This advantage makes this invention more valuable in the manufacturing process of electronic components, helping to improve product yield and reliability. In summary, the needle-like tool of this invention, with its innovation, practicality, and economy, provides strong technical support for the manufacturing of electronic components.
[0021] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:
[0023] Figure 1 This is a schematic diagram of a needle-like tool for removing excess material from the surface of a chip, as shown in Example 1.
[0024] Figure 2 This is a schematic diagram of the sleeve structure in Example 1;
[0025] Figure 3 This is a schematic diagram of the piston rod structure in Example 1;
[0026] Figure 4 This is a schematic diagram of the needle structure in Example 1;
[0027] Figure 5 This is a schematic diagram of a needle-like tool for removing excess material from the chip surface, as shown in Example 2.
[0028] Figure 6 This is a schematic diagram of the needle structure in Example 2.
[0029] Reference numerals: 1-tube sleeve, 11-nipple, 12-tube body, 2-piston rod, 21-rubber piston body, 22-piston shaft, 23-piston handle, 3-needle, 31-needle shaft, 32-needle plug, 4-filament, 5-vent hole. Detailed Implementation
[0030] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0031] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0033] Example 1
[0034] Please see Figures 1-4 A needle-like tool for removing excess material from the surface of a chip includes a tube sleeve 1, a piston rod 2, a needle 3, and a filament 4. The needle 3 is detachably connected to one end of the tube sleeve 1, and the piston rod 2 is slidably inserted into the tube sleeve 1 from the end of the tube sleeve 1 away from the needle 3 to form a structure like a syringe.
[0035] One end of the filament 4 is inserted into the needle 3 and passes through the tail end of the sleeve 1, and is fixed by the clamping action of the piston rod 2 and the sleeve 1.
[0036] Furthermore, the tube sleeve 1 includes a tube body 12 and a nipple 11 disposed at one end thereon; the piston rod 2 includes a piston shaft 22 and a rubber piston body 21 and a piston handle 23 disposed at both ends of the piston shaft 22; and the needle 3 includes a needle plug 32 and a needle shaft 31 fixedly connected to the needle plug 32.
[0037] The needle plug 32 is sleeved on the nipple 11 to connect the needle 3 to one end of the tube sleeve 1. One end of the piston rod 2, on which a rubber piston body 21 is arranged, is inserted into the end of the tube sleeve 1 away from the nipple 11, and the piston rod 2 is pushed to move axially back and forth by holding the piston handle 23.
[0038] The filament 4 is made of polyamide and its length should be sufficient to pass through the tube from the needle tip of the needle shaft to the inside of the tube. Preferably, the length of the filament 4 is sufficient to pass through the end of the tube away from the needle tip 3 from the needle tip of the needle shaft, so as to facilitate the insertion of the piston rod 2 and the control of the filament 4.
[0039] Preferably, the polyamide filaments must have a certain degree of softness, and no fine fiber particles should fall off after cutting, and the diameter of the filaments should be about 90μm.
[0040] Preferably, after the filament is inserted into the needle 3 and the sleeve 1, the needle can be appropriately flattened so that the filament cannot move freely without external interference. The filament can be manually pulled, and its position can be held in place by the rubber piston body 21. Furthermore, the rubber piston body 21 prevents damage to the shape of the filament and better holds it in place.
[0041] Furthermore, both the nipple 11 and the rubber piston body 21 are tapered in the direction of the needle tip, and the outer diameter of the rubber piston body 21 matches the inner diameter of the nipple 11, so that the rubber piston body 21 is conically engaged in the inner cavity of the nipple 11, so as to better fix the filament.
[0042] Furthermore, in this embodiment, the needle shaft 31 in the needle tip 3 is a straight needle shaft, so that the filament 4 is straight as a whole.
[0043] Specifically, the tools used in the foreign object removal process must not damage the chip or other functional components within the device cavity, and must operate under a high-powered microscope and within complex cavities. The tool design has the following requirements:
[0044] 1. To cope with the working environment, the needle 3 used in this tool should correspond to the thickness of the filament. The diameter of the filament 3 is about 90μm, and a needle of about 32G is used so that the diameter of the filament 3 is slightly smaller than the inner diameter of the needle shaft 31 in the needle, so that the filament can be inserted normally. In addition, the filament 4 should not be too hard or too soft to avoid damaging the chip and bonding wires. After cutting, no fine fiber particles will fall off. Therefore, the material of the filament 4 is polyamide.
[0045] 2. To facilitate gripping, the dimensions of the tube body 12, which forms the shape of the tool, should not exceed approximately φ0.5cm;
[0046] 3. To facilitate the removal of the piston rod 2, a vent hole 5 is provided in the tube body 12 near the nipple 11 to prevent the piston rod from being unable to be removed due to vacuum, thus affecting the position of the filament 1 in the needle.
[0047] 4. Because the needle 3 needs to work under a high-power microscope and in complex lumens, the length of the needle shaft 31 in the needle 3 should be controlled between 1-1.5 cm. The length can be appropriately increased if there are special requirements.
[0048] Example 2
[0049] Please see Figures 5-6 The difference between this embodiment and embodiment 1 is that in this embodiment, the needle shaft 31 in the needle 3 is a bent needle shaft, which adjusts the direction of the filament to adapt to different working conditions.
[0050] Example 3
[0051] This embodiment provides a method for using a needle-like tool for removing foreign matter from the surface of a chip. The tool described in Embodiment 1 or Embodiment 2 is used, and the specific method is as follows:
[0052] First, the needle 3 is installed on the nipple 11 of the tube sleeve 1 through the needle plug 32. Then, the filament 4 is inserted into the needle and the tube sleeve 1 from the end of the needle 3 away from the tube sleeve 1, and exits the tube sleeve 1 through the end of the tube sleeve 1 away from the needle 3. An exposed filament is left at the end of the needle 3 away from the tube sleeve to remove excess material from the chip surface.
[0053] Then, the piston rod 2 is inserted into the tube sleeve from the end away from the nipple 11 at one end of the rubber piston body 21, and the tube sleeve 1 is pressed against the inner wall of the tube sleeve 1 at the end near the nipple 11 to fix the position of the filament. Then, the tube sleeve is held and the excess material on the chip surface is removed by the filament exposed outside the needle.
[0054] Specifically, when inserting the piston rod 2, the operator can fix one end of the filament away from the needle before inserting the piston rod 2 into the sleeve 1 to prevent the rubber piston body 21 from driving the filament toward the needle during movement.
[0055] Furthermore, the needle shaft 31 in the needle 3 is flattened, so that the filament 4 cannot move freely without external force, thereby further fixing the position of the filament. During the process of removing foreign matter from the chip surface, when the length of the filament exposed outside the needle is insufficient to remove foreign matter from the chip surface (or after the filament is cut with a blade), the piston rod 2 is controlled to move away from the nipple 11 to release the clamping of the filament by the rubber piston body 21 and the inner wall of the tube. Then, the filament is manually pulled to expose a length sufficient to remove foreign matter from the chip surface. Then, the piston rod 2 is controlled to move closer to the nipple 11 to re-clamp the filament 4, thereby fixing the position of the filament.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A needle-like tool for removing excess material from the surface of a chip, characterized in that: It includes a tube sleeve, a piston rod, a needle, and a filament. The needle is detachably connected to one end of the tube sleeve, and the piston rod is slidably inserted into the tube sleeve from the end of the tube sleeve away from the needle. One end of the filament is inserted through the needle and into the inside of the tube, and is fixed by the clamping action of the piston rod and the tube.
2. The needle-like tool for removing excess material from the surface of a chip according to claim 1, characterized in that: The cannula includes a tube body and a nipple disposed at one end thereof; the piston rod includes a piston shaft and a rubber piston body and a piston handle disposed at both ends of the piston shaft; the needle includes a needle plug and a needle shaft fixedly connected to the needle plug. The needle plug is fitted onto the nipple to connect the needle to one end of the tube. One end of the piston rod, on which a rubber piston body is arranged, is inserted into the end of the tube away from the nipple, and the piston rod is pushed to move axially back and forth by the piston handle.
3. The needle-like tool for removing excess material from the chip surface according to claim 2, characterized in that: The filament is made of polyamide and its length should be sufficient to extend from the tip of the needle shaft into the tube.
4. The needle-like tool for removing excess material from the chip surface according to claim 3, characterized in that: The filament is long enough to pass through the end of the tube furthest from the needle tip, so as to facilitate the insertion of the piston rod and the control of the filament.
5. The needle-like tool for removing excess material from the surface of a chip according to claim 2, characterized in that: Ventilation holes are provided in the tube near the nipple.
6. The needle-like tool for removing excess material from the chip surface according to claim 2, characterized in that: The dimensions of the tube body do not exceed φ0.5cm.
7. The needle-like tool for removing excess material from the surface of a chip according to claim 2, characterized in that: The needle shaft is 1 to 1.5 cm long and is either straight or bent.
8. The needle-like tool for removing excess material from the surface of a chip according to claim 1, characterized in that: The diameter of the filament is 90 μm.
9. The needle-like tool for removing excess material from the surface of a chip according to claim 1, characterized in that: The needle is 32G in size.