Needle head for IC packaging and chip bonding

Abstract

The utility model relates to the technical field of semiconductor packaging, in particular to a needle head for IC packaging and chip bonding, which comprises a connecting plate, a mounting tube is fixedly connected to the middle of the top of the connecting plate, a first connecting hole is formed in the inner wall of the mounting tube in a penetrating manner, a first conical tube is fixedly connected to the top end of the mounting tube, and a second conical tube is fixedly connected to the top end of the first conical tube. A first conical hole is formed in the inner wall of the first conical pipe in a penetrating mode, a second conical pipe is fixedly connected to the top end of the first conical pipe, and a discharge pipe is fixedly connected to the top end of the second conical pipe; the needle head is composed of the mounting pipe, the first connecting hole, the first conical pipe, the first conical hole, the second conical pipe, the second conical hole, the discharge pipe and the second connecting hole, so that air pressure in the needle head is more stable, glue points are more uniform and controlled in the production process, waste of conductive silver paste is reduced, and production efficiency is improved. And by changing the shapes and structures of the discharge pipe and the second conical pipe, the needle head can be used for bonding more chips with different sizes and proportions.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor packaging, and in particular relates to a needle head used for IC packaging and bonding chips. Background Art

[0002] In the electronic semiconductor packaging industry, the main methods used to fix chips on lead frames are glue fixation and flip-chip metal welding. Glue bonding requires applying glue dots on the lead frame according to the size of the chip used, and then fixing the chip on the glue dots by chip transfer to achieve the purpose of bonding. The glue used in the industry is generally divided into insulating resin glue and conductive silver paste, and the methods of applying glue dots include injection and dispensing.

[0003] Due to the limitation of the needle, injection-type glue coating has problems with matching with the hose, chip adaptation, and residual glue in the needle. Integrated circuits often use conductive silver paste as the adhesive between the chip and the lead frame. Because of the characteristics of its silver powder and resin, it is often stored frozen, and the effective use time after thawing is short, so the hose is used as a container during transportation and use. The needle needs to be adapted to the hose for easy disassembly, cleaning, and maintenance. When the hose size is fixed, the needle needs to be adjusted for chips of different sizes. The internal volume should be reduced as much as possible while ensuring hardness to reduce glue waste. Current mainstream products are difficult to adjust for chips of different sizes and proportions, and for the convenience of processing, the internal space of the needle is large and the conductive silver paste is wasted a lot, so staff need to improve it. Utility Model Content

[0004] The purpose of the present utility model is to provide a needle head for IC packaging and chip bonding to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A needle for IC packaging and chip bonding, comprising:

[0007] Connecting plate;

[0008] A mounting tube is fixedly connected to the middle of the top of the connecting plate, a first connecting hole is formed through the inner wall of the mounting tube, and a first tapered tube is fixedly connected to the top of the mounting tube;

[0009] A first conical hole is formed through the inner wall of the first conical tube, a second conical tube is fixedly connected to the top end of the first conical tube, a second conical hole is formed through the inner wall of the second conical tube, a discharge tube is fixedly connected to the top end of the second conical tube, and a second connecting hole is formed through the inner wall of the discharge tube.

[0010] Preferably, both sides of the surface of the connecting plate are fixedly connected with mounting sleeves, one end of the two mounting sleeves are rotatably connected with a handle, one side of the handle is fixedly connected with a threaded rod, one side of the surface of the threaded rod is threadedly connected with a threaded sleeve, and one side of the surface of the threaded sleeve is inserted into the inner wall of the mounting sleeve, the front end of the threaded sleeve is fixedly connected with an arc-shaped splint, and one side of the surface of the arc-shaped splint is fixedly connected with multiple sets of anti-slip pads.

[0011] Preferably, a baffle is fixedly connected to one side of the inner wall of the connecting plate, a mounting groove is provided on the other side of the inner wall of the connecting plate, and one side of the inner wall of the mounting groove is sleeved on the surface of the arc-shaped clamping plate.

[0012] Preferably, a sealing plate is fixedly connected to one side of the bottom of the connecting plate, a connecting tube is inserted into the middle of the bottom of the connecting plate, and one side of the surface of the connecting tube overlaps the inner wall of the arc-shaped splint.

[0013] Preferably, the bottom end of the connecting pipe is fixedly connected to a mounting strap, and one side of the top of the mounting strap is attached to the bottom of the sealing plate.

[0014] Preferably, a connecting hose is fixedly connected to one side of the bottom of the mounting strap, a sealing gasket is fixedly connected to one side of the top of the mounting strap, and one side of the top of the sealing gasket overlaps the bottom of the sealing plate.

[0015] Preferably, the connecting tube is made of a hard plastic tube, and a non-slip sleeve is sleeved on one side of the surface of the connecting tube.

[0016] Preferably, one side of the inner wall of the threaded sleeve is slidably connected to a limiting rod, and one end of the limiting rod is fixedly connected to the inner wall of the mounting sleeve.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) Through the arrangement of the mounting tube, the first conical tube, the second conical tube and the discharge tube, when in use, the connecting plate is conveniently connected to the rubber tube for storing the conductive silver paste. The first connecting hole and the second conical hole are respectively provided through the inner wall of the mounting tube and the first conical tube. The first connecting hole and the second conical hole ensure that the silver paste can be completely filled into the needle after being pressed into the needle from the rubber tube, and ensure that there are no bubbles inside the needle. Moreover, the larger inclination angle can keep the air pressure inside the needle stable. The discharge tube at the top is connected to the first conical tube at the bottom through the second conical tube and the second conical hole. The overall height and hardness of the device are ensured, and the shape of the discharge tube is like a stepped pipe, and a second connection hole adapted to the size of the chip is set at the top. The needle is composed of the mounting tube, the first connection hole, the first tapered tube, the first tapered hole, the second tapered tube, the second tapered hole, the discharge tube and the second connection hole, thereby achieving a more stable internal air pressure in the needle, making the glue points more evenly controlled during the production process, reducing the waste of conductive silver paste, and by changing the shape structure of the discharge tube and the second tapered tube, the needle can be used for bonding chips of more different sizes and proportions.

[0019] (2) Through the arrangement of the arc-shaped splint, anti-skid pad, connecting tube, mounting plate and connecting hose, when in use, the staff rotates the hand grip, and the hand grip drives the threaded rod on one side to rotate, and the threaded rod drives the threaded sleeve connected to the surface thread to move, and the threaded sleeve drives the arc-shaped splint at the front end to move, and the connecting hose at the bottom of the mounting plate is plugged into the inner wall of the connecting plate through the connecting tube at the top, and the anti-skid pad on the inner wall of the arc-shaped splint overlaps the surface of the anti-skid sleeve on the surface of the connecting tube, thereby facilitating the stable connection of the connecting hose and the needle, and the mounting plate overlaps the sealing plate at the bottom of the connecting plate, thereby achieving the effect of stable and sealed connection between the connecting hose and the needle, and facilitating the operation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0021] Figure 2 This is the second stereogram of the present utility model;

[0022] Figure 3 This is a three-dimensional diagram of the first tapered tube of the present invention;

[0023] Figure 4 This is a three-dimensional diagram of the arc-shaped splint of the utility model;

[0024] Figure 5 A three-dimensional diagram of the installation pipe of the utility model;

[0025] Figure 6 This is a three-dimensional diagram of the second tapered hole of the present invention;

[0026] In the figure: 1. connecting plate; 2. mounting tube; 3. first connecting hole; 4. first tapered tube; 5. first tapered hole; 6. second tapered tube; 7. second tapered hole; 8. discharge tube; 9. second connecting hole; 10. mounting sleeve; 11. hand grip; 12. threaded rod; 13. threaded sleeve; 14. arc-shaped splint; 15. anti-slip pad; 16. baffle; 17. mounting groove; 18. sealing plate; 19. connecting tube; 20. mounting plate; 21. connecting hose; 22. limit rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1:

[0029] See also Figures 1 to 6 As shown, a needle head for IC packaging and chip bonding includes:

[0030] Connecting plate 1;

[0031] A mounting tube 2 is fixedly connected to the middle of the top of the connecting plate 1. A first connecting hole 3 is formed through the inner wall of the mounting tube 2. A first tapered tube 4 is fixedly connected to the top of the mounting tube 2.

[0032] A first conical hole 5 is formed through the inner wall of the first conical tube 4, a second conical tube 6 is fixedly connected to the top end of the first conical tube 4, a second conical hole 7 is formed through the inner wall of the second conical tube 6, a discharge tube 8 is fixedly connected to the top end of the second conical tube 6, and a second connecting hole 9 is formed through the inner wall of the discharge tube 8.

[0033] When in use, a mounting tube 2 is provided on the top of the connecting plate 1, and the connecting plate 1 is convenient for connecting with the hose for storing the conductive silver paste. A first tapered tube 4 is provided on the top of the mounting tube 2, and a first connecting hole 3 and a second tapered hole 7 are respectively provided through the inner walls of the mounting tube 2 and the first tapered tube 4. The first connecting hole 3 and the second tapered hole 7 are used to ensure that the silver paste can be completely filled into the needle after being pressed into the needle from the hose, and that there are no bubbles inside the needle. The larger inclination angle can keep the air pressure inside the needle stable, and a A second conical tube 6 is provided, and a second conical hole 7 is provided through the inner wall of the second conical tube 6. The discharge tube 8 at the top is connected to the first conical tube 4 at the bottom through the second conical tube 6 and the second conical hole 7 to ensure the overall height and hardness of the device. The shape of the discharge tube 8 is like a stepped pipe, and a second connecting hole 9 adapted to the size of the chip is provided at the top. Thus, a needle head is formed by the mounting tube 2, the first connecting hole 3, the first conical tube 4, the first conical hole 5, the second conical tube 6, the second conical hole 7, the discharge tube 8 and the second connecting hole 9.

[0034] The change of the first tapered tube 4 reduces needle waste, stabilizes air pressure, and improves glue point consistency. The change of the second tapered tube 6 and the discharge tube 8 can adapt to the bonding of chips of more sizes and proportions.

[0035] The first tapered tube 4 shrinks the internal space to ensure stable internal air pressure. The discharge tube 8 is adapted to chips of different size ratios. The second tapered tube 6 ensures that no bubbles appear inside the needle.

[0036] Example 2:

[0037] See also Figures 1 to 6As shown, both sides of the surface of the connecting plate 1 are fixedly connected with mounting sleeves 10, one end of the two mounting sleeves 10 are rotatably connected with a hand grip 11, one side of the hand grip 11 is fixedly connected with a threaded rod 12, one side of the surface of the threaded rod 12 is threadedly connected with a threaded sleeve 13, and one side of the surface of the threaded sleeve 13 is plugged into the inner wall of the mounting sleeve 10, the front end of the threaded sleeve 13 is fixedly connected with an arc-shaped clamping plate 14, one side of the surface of the arc-shaped clamping plate 14 is fixedly connected with multiple groups of anti-slip pads 15, one side of the inner wall of the connecting plate 1 is fixedly connected with a baffle 16, and the other side of the inner wall of the connecting plate 1 is provided with a mounting groove 17, and one side of the inner wall of the mounting groove 17 is sleeved on the arc-shaped clamping plate The surface of the plate 14 is fixedly connected to a sealing plate 18 on one side of the bottom of the connecting plate 1, and a connecting tube 19 is inserted in the middle of the bottom of the connecting plate 1, and one side of the surface of the connecting tube 19 is overlapped on the inner wall of the arc-shaped splint 14, and the bottom end of the connecting tube 19 is fixedly connected to the mounting plate 20, and one side of the top of the mounting plate 20 is attached and connected to the bottom of the sealing plate 18, and one side of the bottom of the mounting plate 20 is fixedly connected to a connecting hose 21, and one side of the top of the mounting plate 20 is fixedly connected to a sealing gasket, and one side of the top of the sealing gasket is overlapped on the bottom of the sealing plate 18. The material of the connecting tube 19 is a hard plastic tube, and one side of the surface of the connecting tube 19 is sleeved with an anti-slip sleeve.

[0038] When in use, mounting sleeves 10 are provided on both sides of the surface of the connecting plate 1, and hand grips 11 are rotatably provided at one end of the two mounting sleeves 10. The staff rotates the hand grips 11, and the hand grips 11 drive the threaded rod 12 on one side to rotate, and the threaded rod 12 drives the threaded sleeve 13 connected to the surface thread to move, and a limiting rod 22 is slidably provided on the inner wall of the threaded sleeve 13. The limiting rod 22 is fixed to the inner wall of the mounting sleeve 10, which can facilitate the control of the stable movement of the threaded sleeve 13, so that the threaded sleeve 13 drives the arc-shaped clamping plate 14 at the front end to move, and a mounting sleeve 13 is overlapped at the bottom of the connecting plate 1 Install the strap 20, and the connecting hose 21 at the bottom of the strap 20 is inserted into the inner wall of the connecting plate 1 through the connecting tube 19 at the top, and a non-slip sleeve is sleeved on the surface of the connecting tube 19, and a non-slip pad 15 is provided on the inner wall of the arc-shaped splint 14, and an installation groove 17 is provided on the inner wall of the connecting plate 1, and the arc-shaped splint 14 on the inner wall of the installation groove 17 is moved to the surface of the connecting tube 19, and the non-slip pad 15 on the inner wall of the arc-shaped splint 14 is overlapped on the surface of the non-slip sleeve on the surface of the connecting tube 19, thereby facilitating the stable connection of the connecting hose 21 to the needle, and the strap 20 is overlapped with the sealing plate 18 at the bottom of the connecting plate 1.

[0039] Working principle: When in use, the connecting plate 1 is convenient for connecting with the rubber tube for storing conductive silver paste, and the inner walls of the mounting tube 2 and the first tapered tube 4 are respectively penetrated with a first connecting hole 3 and a second tapered hole 7. The first connecting hole 3 and the second tapered hole 7 are used to ensure that the silver paste can be completely filled into the needle after being pressed into the needle from the rubber tube, and to ensure that there are no bubbles inside the needle, and the larger inclination angle can keep the air pressure inside the needle stable, and the discharge tube 8 at the top is connected with the first tapered tube 4 at the bottom through the second tapered tube 6 and the second tapered hole 7 to ensure the overall height and hardness of the device, and the shape of the discharge tube 8 is like a stepped pipe, and a second connecting hole 9 adapted to the size of the chip is set at the top, thereby passing through the mounting tube 2, the first connecting hole 3, the first tapered tube 4, the first tapered hole 5, the second tapered hole 7, the first tapered hole 5 ... The two conical tubes 6, the second conical hole 7, the discharge tube 8 and the second connecting hole 9 form a needle head. The staff rotates the hand grip 11, and the hand grip 11 drives the threaded rod 12 on one side to rotate. The threaded rod 12 drives the threaded sleeve 13 with the surface thread connection to move, and a limit rod 22 is provided on the inner wall sliding of the threaded sleeve 13, which can facilitate the control of the stable movement of the threaded sleeve 13, so that the threaded sleeve 13 drives the front end arc-shaped splint 14 to move, and the connecting hose 21 at the bottom of the installation strap 20 is inserted into the inner wall of the connecting plate 1 through the top connecting tube 19, and is overlapped on the surface of the anti-slip sleeve of the connecting tube 19 through the anti-slip pad 15 on the inner wall of the arc splint 14, thereby facilitating the stable connection of the connecting hose 21 to the needle head, and the installation strap 20 is overlapped with the sealing plate 18 at the bottom of the connecting plate 1.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0041] All standard parts used in this utility model can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. In addition, the circuit connections adopt conventional connection methods in the existing technology and will not be described in detail here. Any matters not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0042] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0043] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0046] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A needle for IC packaging and bonding chips, characterized in that: include: Connecting plate (1); A mounting tube (2) is fixedly connected to the middle of the top of the connecting plate (1), a first connecting hole (3) is provided through the inner wall of the mounting tube (2), and a first conical tube (4) is fixedly connected to the top of the mounting tube (2); A first conical hole (5) is provided through the inner wall of the first conical tube (4), a second conical tube (6) is fixedly connected to the top end of the first conical tube (4), a second conical hole (7) is provided through the inner wall of the second conical tube (6), a discharge tube (8) is fixedly connected to the top end of the second conical tube (6), and a second connecting hole (9) is provided through the inner wall of the discharge tube (8).

2. The needle head for IC packaging and chip bonding according to claim 1, characterized in that: Both sides of the surface of the connecting plate (1) are fixedly connected with mounting sleeves (10), one end of each of the two mounting sleeves (10) is rotatably connected with a hand grip (11), one side of the hand grip (11) is fixedly connected with a threaded rod (12), one side of the surface of the threaded rod (12) is threadedly connected with a threaded sleeve (13), and one side of the surface of the threaded sleeve (13) is plugged into the inner wall of the mounting sleeve (10), the front end of the threaded sleeve (13) is fixedly connected with an arc-shaped clamping plate (14), and one side of the surface of the arc-shaped clamping plate (14) is fixedly connected with multiple groups of anti-slip pads (15).

3. The needle head for IC packaging and chip bonding according to claim 1, characterized in that: A baffle (16) is fixedly connected to one side of the inner wall of the connecting plate (1), and a mounting groove (17) is provided on the other side of the inner wall of the connecting plate (1), and one side of the inner wall of the mounting groove (17) is sleeved on the surface of the arc-shaped clamping plate (14).

4. The needle head for IC packaging and chip bonding according to claim 1, characterized in that: A sealing plate (18) is fixedly connected to one side of the bottom of the connecting plate (1), a connecting tube (19) is inserted into the middle of the bottom of the connecting plate (1), and one side of the surface of the connecting tube (19) overlaps the inner wall of the arc-shaped clamping plate (14).

5. The needle head for IC packaging and chip bonding according to claim 4, characterized in that: The bottom end of the connecting pipe (19) is fixedly connected to a mounting plate (20), and one side of the top of the mounting plate (20) is attached to the bottom of the sealing plate (18).

6. The needle head for IC packaging and chip bonding according to claim 5, characterized in that: One side of the bottom of the mounting strap (20) is fixedly connected to a connecting hose (21), one side of the top of the mounting strap (20) is fixedly connected to a sealing gasket, and one side of the top of the sealing gasket is overlapped with the bottom of the sealing plate (18).

7. The needle head for IC packaging and chip bonding according to claim 4, characterized in that: The connecting tube (19) is made of a hard plastic tube, and one side of the surface of the connecting tube (19) is sleeved with an anti-slip sleeve.

8. The needle head for IC packaging and chip bonding according to claim 2, characterized in that: One side of the inner wall of the threaded sleeve (13) is slidably connected to a limiting rod (22), and one end of the limiting rod (22) is fixedly connected to the inner wall of the mounting sleeve (10).

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