CN216849868U - Film pasting device compatible with various films in wafer film pasting - Google Patents

Abstract

The utility model discloses a be arranged in wafer pad pasting compatible pad pasting device of multiple membrane, including the shell, the internally mounted of shell has around membrane mechanism, winds membrane mechanism and installs first gyro wheel including installing the new membrane fixed axle on the shell lateral wall in one side below of new membrane fixed axle, and the second gyro wheel is installed to below one side of first gyro wheel, and the fifth gyro wheel is installed to below one side of second gyro wheel, and the sixth gyro wheel is installed to one side of fifth gyro wheel, and the seventh gyro wheel is installed to the opposite side of fifth gyro wheel, and the eighth gyro wheel is installed to one side of seventh gyro wheel. This be arranged in wafer pad pasting in the compatible pad pasting device of multiple membrane, through the design of multiunit gyro wheel, the pad pasting device of multiple membrane of compatibility, this device both can use ordinary blue membrane, also can use the UV membrane, can also use precutting membrane and DAF membrane, makes a production line only need 1 pad pasting devices just can accomplish the switching that different products used different cutting membranes, has simplified the mode of changing the membrane simultaneously, has saved the time of changing the membrane.

Description

Film pasting device compatible with various films in wafer film pasting

Technical Field

The utility model relates to a pad pasting equipment technical field, specifically speaking relates to a be arranged in wafer pad pasting compatible pad pasting device of multiple membrane.

Background

The current advances in semiconductor technology, LED and camera technology have higher and higher requirements for the performance of products, and new packaging technologies are emerging continuously. In the traditional packaging, a cutting film is required to be pasted on a wafer before cutting, some products can meet the cutting requirement only by pasting a common blue film, some products have higher requirements, the common blue film is easy to generate quality problems, the cutting requirement of the wafer can be met only by pasting a UV film, the glue layer of the UV film is thicker and more sticky, a protective film is pasted on the glue layer side of the UV film when the UV film leaves a factory, the protective film is required to be removed when the UV film is used, and the process for pasting the cutting film for packaging is more complicated; in some new processes, the film is pre-cut to solve the problem of product shape, and some products need to solve the problem that soft solder and die attach adhesives cannot be used for stack packaging when used for ultra-small ultra-thin chips, so that the DAF film is used. When the precut film or the DAF film is attached, the precut film or the DAF film needs to be peeled off from the protective film, and the initial position of the DAF needs to be accurately positioned, so that the glue layer of the film and the size of a product can be completely overlapped and covered.

The existing packaging plants are all produced by replacing tools, cutting films used by products of different manufacturers are different, some products need common blue films, some products need UV films, and some products need precut films or DAF films. If these several kinds of films of a encapsulation factory all need, just need buy the pad pasting demand of different sticking film machines in order to adapt to different products, the encapsulation factory just needs several different sticking film machines just can satisfy the production demand, so many sticking film machines have not only increased the machine purchasing cost of encapsulation factory, also need bigger space to place the machine, also need more personnel to operate and maintain the machine, can not compatible each other again between the machine simultaneously, this greatly increased the operation cost of encapsulation factory.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be arranged in wafer pad pasting multiple membrane compatible pad pasting device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a film sticking device compatible with multiple films in wafer film sticking, which comprises a shell, wherein a film winding mechanism is arranged in the shell, the film winding mechanism comprises a new film fixing shaft arranged on the side wall of the shell, a first roller is arranged below one side of the new film fixing shaft, a second roller is arranged below one side of the first roller, a fifth roller is arranged below one side of the second roller, a sixth roller is arranged on one side of the fifth roller, a seventh roller is arranged on the other side of the fifth roller, an eighth roller is arranged on one side of the seventh roller, a ninth roller is arranged below one side of the eighth roller, a pendulum bob is arranged below one side of the sixth roller, a film collecting shaft of a protective film is arranged above one side of the sixth roller, a film sticking roller is arranged on one side of the ninth roller, the film drawing mechanism is installed on the outer side of the film pasting roller, the fifteenth roller is installed on the outer side of the film drawing mechanism, the spindle shaft is installed on one side of the upper portion of the fifteenth roller, the waste film winding shaft is installed above the spindle shaft, and different rollers are installed on the side wall and can rotate freely.

Preferably, a third roller is installed below the new film fixing shaft, and a fourth roller is installed above the fifth roller.

Preferably, a pre-cutting film separating device is installed below the ninth roller, and the pre-cutting film separating device is a slope-shaped triangular body.

Preferably, a screw rod and a guide rail are connected below the film drawing mechanism, the movement is controlled by a motor, the film drawing mechanism consists of 5 sets of rollers and comprises a tenth roller, an eleventh roller, a twelfth roller, a thirteenth roller and a fourteenth roller, the tenth roller consists of two sub rollers arranged on the same shaft, a gap is formed between the two sub rollers, a spring is arranged at a position close to the side wall, the two sub rollers can freely rotate and can move along the axial direction, the eleventh roller also consists of two sub rollers, the two sub rollers are arranged on the same shaft, the two sub rollers cannot freely rotate along the shaft but can move along the axial direction, the axial movement is respectively controlled by two cylinders, the two cylinders control the movement of the shaft, and the tenth roller and the eleventh roller jointly act to ensure that the film is drawn flat when the film is pasted.

Preferably, the new film fixing shaft, the protective film collecting shaft and the waste film rolling shaft are connected with a torque motor through a belt and a belt pulley, and an expansion cylinder is mounted on the shafts and controlled by a switch.

Preferably, the cylinders are installed at two ends of the second roller, the fifth roller and the film sticking roller, the two cylinders control the position of the second roller through a connecting piece, the cylinders are fixed on the side wall through a connecting rod, and the stepping motors are installed at one ends of the third roller and the fourth roller.

Preferably, a position detection sensor is mounted on a side wall of the pendulum, and position detection sensors are mounted between the second roller and the third roller and between the fourth roller and the fifth roller.

Compared with the prior art, the beneficial effects of the utility model are that:

this be arranged in compatible pad pasting device of multiple membrane in wafer pad pasting, change the trend of membrane through the gyro wheel of difference, the branch gyro wheel through tenth gyro wheel and eleventh gyro wheel guarantees the level and smooth of membrane, the removal through second gyro wheel and fifth gyro wheel is accomplished and is drawn the membrane action, control opening and stopping of protection film receipts membrane axle through the pendulum, the design of spindle axle makes more level and smooth that the membrane spreads, design through the multiunit gyro wheel, the pad pasting device of compatible many kinds of membranes, this device both can use ordinary blue membrane, also can use the UV membrane, can also use precutting membrane and DAF membrane, make a production line only need 1 pad pasting devices just can accomplish the switching that different products used different cutting membranes, the mode of changing the membrane has been simplified simultaneously, the time of changing the membrane has been saved.

Drawings

Fig. 1 is a schematic external structural view of the present invention;

fig. 2 is one of the structural schematic diagrams of the internal film winding mechanism of the present invention;

fig. 3 is a second schematic structural diagram of the film winding mechanism of the present invention.

The various reference numbers in the figures mean:

1. a new film fixing shaft; 2. a first roller; 3. a second roller; 4. a third roller; 5. a fourth roller; 6. a fifth roller; 7. a sixth roller; 8. a protective film take-up shaft; 9. a pendulum bob; 10. a seventh roller; 11. an eighth roller; 12. a pre-cut membrane separation device; 13. a ninth roller; 14. film pasting rollers; 15. a tenth roller; 16. an eleventh roller; 17. a twelfth roller; 18. a thirteenth roller; 19. a fourteenth roller; 20. a fifteenth roller; 21. a spindle shaft; 22. a waste film winding shaft; 23. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

The utility model provides a film sticking device for wafer film sticking with multiple compatible films, as shown in figures 1-3, comprising a shell 23, a film winding mechanism is arranged in the shell 23, the film winding mechanism comprises a new film fixing shaft 1 arranged on the side wall of the shell 23, a first roller 2 is arranged below one side of the new film fixing shaft 1, the first roller can freely rotate and is mainly used for changing the winding direction and the stress direction of the film, a second roller 3 is arranged below one side of the first roller 2, a fifth roller 6 is arranged below one side of the second roller 3, a sixth roller 7 is arranged on one side of the fifth roller 6, the sixth roller 7 can change the direction of the film, a seventh roller 10 is arranged on the other side of the fifth roller 6, an eighth roller 11 is arranged on one side of the seventh roller 10, a ninth roller 13 is arranged below one side of the eighth roller 11, the seventh roller 10, the eighth roller 11 and the ninth roller 13 are mainly used for changing the direction and the stress of the film, a pendulum bob 9 is installed on one side of the lower portion of a sixth roller 7, a protective film collecting shaft 8 is installed on one side of the upper portion of the sixth roller 7, a film pasting roller 14 is installed on one side of a ninth roller 13, a film drawing mechanism is installed on the outer side of the film pasting roller 14, a fifteenth roller 20 is installed on the outer side of the film drawing mechanism and used for changing the trend and stress of a film, a spindle shaft 21 is installed on one side of the upper portion of the fifteenth roller 20, the spindle shaft 21 is shaped like a spindle and can rotate freely, the film is prevented from shrinking towards the middle when the film is rolled, the smoothness of the film is guaranteed when the film is rolled into the waste film, a film rolling shaft 22 is installed on the upper portion of the spindle shaft 21, and different rollers are installed on the side wall and can rotate freely.

In this embodiment, a third roller 4 is installed below the new film fixing shaft 1, a fourth roller 5 is installed above the fifth roller 6, a stepping motor is installed at one end of each of the third roller 4 and the fourth roller 5, the third roller 4 is used for controlling the rotating speed of the third roller 4 through the stepping motor, and the fourth roller 5 is used for controlling the rotating speed of the third roller 4 through the stepping motor.

Specifically, the precut film separating device 12 is installed below the ninth roller 13, and the precut film separating device 12 is a slope-shaped triangular body.

Further, a screw rod and a guide rail are connected below the film drawing mechanism, the movement is controlled by a motor, the film drawing mechanism consists of 5 sets of rollers and comprises a tenth roller 15, an eleventh roller 16, a twelfth roller 17, a thirteenth roller 18 and a fourteenth roller 19, the tenth roller 15 consists of two sub rollers arranged on the same shaft, a gap is arranged between the two sub rollers, a spring is arranged at a position close to the side wall, the two sub rollers can freely rotate and can move along the axial direction, the eleventh roller 16 also consists of two sub rollers, the two sub rollers are arranged on the same shaft, the two sub rollers cannot freely rotate along the shaft but can move along the axial direction, the axial movement is respectively controlled by two cylinders, the two cylinders control the movement of the shaft, the tenth roller 15 and the eleventh roller 16 jointly act to ensure that the film is drawn flat when the film is pasted, the twelfth roller 17 is contacted with the viscous surface of the film, the twelfth roller 17 is made of an anti-adhesive material and the thirteenth roller 18 and the fourteenth roller 19 mainly change the orientation and the force of the film.

Further, the new film fixing shaft 1, the protective film collecting shaft 8 and the waste film rolling shaft 22 are connected with a torsion motor through a belt and a belt pulley, the torsion motor is used for controlling the rotation of the shaft, an expansion cylinder is mounted on the shaft and controlled by a switch, the switch is opened after the new film fixing shaft 1 is provided with a winding drum film, and the winding drum film is fixed by the expansion cylinder through the expansion of an air bag; when the film needs to be replaced, the switch is closed, the air bag of the expansion cylinder retracts, and the winding drum film can be drawn out.

Further, the cylinders are installed at two ends of the second roller 3, the fifth roller 6 and the film pasting roller 14, the two cylinders control the position of the second roller 3 through the connecting piece, the cylinders are fixed on the side wall through the connecting rod, when film pasting is needed, the film pasting roller 14 is controlled to be pressed downwards through the cylinders, and the cylinders drive the film pasting roller 14 to lift up after film pasting is completed.

Further, pendulum 9's lateral wall is equipped with position detection sensor, senses the pendulum and rotates when spacing position, and the rotation of sending signal control protection film receipts membrane axle 8 with stop, all install position detection sensor between second gyro wheel 3 and the third gyro wheel 4 and between fourth gyro wheel 5 and the fifth gyro wheel 6.

When the film sticking device for wafer film sticking of the utility model is used, different films are firstly installed according to the schematic diagrams of figure 2 and figure 3; when the membrane used is a blue membrane: as shown by the solid line in fig. 2, the second roller 3 retracts, the fifth roller 6 retracts (a gap is formed between the second roller 3 and the third roller 4, and a gap is also formed between the fourth roller 5 and the fifth roller 6), the shaft of the eleventh roller 16 is driven by the air cylinder to move, so that the tenth roller 15 and the eleventh roller 16 are tightly attached to clamp the film passing between the two sets of rollers, the two sub-rollers of the eleventh roller 16 move towards two sides under the drive of the axial air cylinder, the tenth roller 15 and the eleventh roller 16 are tightly pressed, so that the two sub rollers of the tenth roller 15 are also axially moved by the two sub rollers of the eleventh roller 16, therefore, the film is pulled flatly, the film pulling mechanism pulls the film to move backwards to drive the film to be pulled, the motor on the waste film rolling shaft 22 is a torsion motor, and redundant film is rolled on the waste film rolling shaft 22 under the drive of the torsion;

when the film is pulled to the required length, the product moves to the position below the film pasting roller 14, the film pasting roller 14 presses downwards, the product moves, the film pasting roller 14 pastes the film on the wafer, and after the film is cut, the film pulling mechanism moves back to complete the separation of the waste film and the product table surface. When the film used is a UV film with a protective film: as shown by the solid line and the dotted line in fig. 2, the second roller 3 retracts, the fifth roller 6 retracts (a gap is formed between the second roller 3 and the third roller 4, a gap is also formed between the fourth roller 5 and the fifth roller 6), the shaft of the eleventh roller 16 is driven by the air cylinder to move, so that the tenth roller 15 and the eleventh roller 16 are tightly attached to clamp the film passing between the two rollers, the two sub-rollers of the eleventh roller 16 move towards two sides under the drive of the axial air cylinder, the tenth roller 15 and the eleventh roller 16 are tightly pressed, so that the two sub-rollers of the tenth roller 15 also move axially under the drive of the two sub-rollers of the eleventh roller 16, so that the film is pulled to be flat, the film pulling mechanism pulls the film backwards to drive the film to be pulled, the motor on the waste film roll shaft 22 is a torsion motor, and under the drive of the torsion, the redundant film is rolled onto the waste film roll shaft 22, the protection film roll film axle 8 is rotatory always, the pulling protection film winding is on protection film take-up film axle 8, when the protection film was rolled up, the protection film was pulled up pendulum 9 and was rotated, when pendulum 9 rotated the position detection sensor, position detection sensor signals made the protection film roll film axle 8 stall, when pendulum 9 fell back, protection film roll film axle 8 continued to rotate, make the protection film take-up the collection always, when the film was pulled to required length, the product removed the below of pad pasting gyro wheel 14, pad pasting gyro wheel 14 pushes down, the product removed, pad pasting gyro wheel 14 has just pasted the membrane on the wafer, after cutting the membrane, the film pulling mechanism moved back, accomplish the separation of waste film and product mesa.

When a pre-cut film or DAF film is used: as shown in fig. 3, the second roller 3 is extended forward, the second roller 3 and the third roller 4 contact to press the middle film, the fifth roller 6 is extended, the fourth roller 5 and the fifth roller 6 contact to press the middle film, the second roller 3 and the fifth roller 6 rotate synchronously to pull the film from the roll film, when the position detection sensor detects the edge of the pre-cut film or the DAF film, the system knows the initial position of the pre-cut film or the DAF film, the system knows how much rotation of the second roller 3 and the fifth roller 6 is required to determine the length of the protruding film by calculation, when the film passes through the pre-cut film separation device 12, the pre-cut film and the protective film are separated, and the protective film roll shaft 8 is rotated all the time, the protective film is pulled to wind on the protective film roll shaft 8, when the protective film is wound, the pendulum 9 is pulled up to rotate, and the pendulum 9 rotates to the position detection sensor, the sensor sends out a signal to stop the rotation of the protective film rolling shaft 8, when the pendulum bob 9 falls back, the protective film rolling shaft 8 continues to rotate, the protective film is tensioned all the time for collection, when the product moves to the initial position of the separated pre-cut film, the film sticking roller 14 descends to press the required pre-cut film onto the product, the product moves on the film sticking platform, and the film sticking roller 14 sticks the whole pre-cut film or DAF film onto the wafer.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A film pasting device for pasting multiple films in a wafer, which comprises a shell (23), and is characterized in that: the film winding mechanism is arranged inside the shell (23) and comprises a new film fixing shaft (1) arranged on the side wall of the shell (23), a first roller (2) is arranged below one side of the new film fixing shaft (1), a second roller (3) is arranged on one side of the lower portion of the first roller (2), a fifth roller (6) is arranged on one side of the lower portion of the second roller (3), a sixth roller (7) is arranged on one side of the fifth roller (6), a seventh roller (10) is arranged on the other side of the fifth roller (6), an eighth roller (11) is arranged on one side of the seventh roller (10), a ninth roller (13) is arranged on one side of the lower portion of the eighth roller (11), a pendulum (9) is arranged on one side of the lower portion of the sixth roller (7), and a protective film winding shaft (8) is arranged on one side of the upper portion of the sixth roller (7), pad pasting gyro wheel (14) are installed to one side of ninth gyro wheel (13), the outside of pad pasting gyro wheel (14) is installed and is drawn membrane mechanism, draws the membrane mechanism outside and installs fifteenth gyro wheel (20), spindle (21) are installed to upper portion one side of fifteenth gyro wheel (20), waste film roll membrane axle (22) are installed to the top of spindle (21), and different gyro wheels all install on the lateral wall, and can the free rotation.

2. The film pasting device for wafer pasting according to claim 1, wherein: and a third roller (4) is installed below the new film fixing shaft (1), and a fourth roller (5) is installed above the fifth roller (6).

3. The film pasting device for wafer pasting according to claim 1, wherein: a precut membrane separation device (12) is arranged below the ninth roller (13), and the precut membrane separation device (12) is a slope-shaped triangular body.

4. The film pasting device for wafer pasting according to claim 1, wherein: the lower part of the film drawing mechanism is connected with a screw rod and a guide rail, the movement is controlled by a motor, the film drawing mechanism consists of 5 sets of rollers and comprises a tenth roller (15), an eleventh roller (16), a twelfth roller (17), a thirteenth roller (18) and a fourteenth roller (19), the tenth roller (15) consists of two sub rollers which are arranged on the same shaft, a gap is arranged between the two sub rollers, a spring is arranged at a position close to the side wall, the two sub rollers can freely rotate and can simultaneously move along the axial direction, the eleventh roller (16) also consists of two sub rollers which are arranged on the same shaft, the two sub rollers can not freely rotate along the shaft but can move along the axial direction, the axial direction movement is respectively controlled by two air cylinders, the movement of the control shafts of the two air cylinders is realized simultaneously, and the tenth roller (15) and the eleventh roller (16) act together, ensure that the film is leveled when the film is pasted.

5. The film pasting device for wafer pasting according to claim 1, wherein: new membrane fixed axle (1), protection film receipts membrane axle (8) and waste film roll up membrane axle (22) all have a torque motor through belt and belt pulley connection, epaxial expansion cylinder of installing, expansion cylinder has on-off control.

6. The film pasting device for wafer pasting according to claim 2, wherein: the cylinder is all installed at the both ends of second gyro wheel (3), fifth gyro wheel (6) and pad pasting gyro wheel (14), and two cylinders pass through the position of connecting piece control second gyro wheel (3), and the cylinder passes through the connecting rod to be fixed on the lateral wall, step motor is installed to the one end of third gyro wheel (4) and fourth gyro wheel (5).

7. The film pasting device for wafer pasting according to claim 1, wherein: and position detection sensors are arranged on the side wall of the pendulum bob (9), and position detection sensors are arranged between the second roller (3) and the third roller (4) and between the fourth roller (5) and the fifth roller (6).

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