WO2021243948A1

WO2021243948A1 - System and method for thin film processing

Info

Publication number: WO2021243948A1
Application number: PCT/CN2020/126696
Authority: WO
Inventors: 魏国军; 卢国; 周杨; 周小红; 范广飞; 魏玉宽; 毛立华; 陈林森
Original assignee: 苏州苏大维格科技集团股份有限公司
Priority date: 2020-06-01
Filing date: 2020-11-05
Publication date: 2021-12-09
Also published as: CN113766736A

Abstract

Provided in the present invention are a system and method for thin film processing. The system for thin film processing comprises: a first active roller, a thin-film tape entering the first active roller comprising first patterns repeatedly arranged in the length direction of the thin-film tape, where the first patterns comprise a first alignment identifier; an adhesive applying apparatus, which is configured to form an adhesive layer on the thin-film tape; a second active roller, the second active roller being provided on the roller surface with an embossing structure, the roller surface of the second active roller embossing on the adhesive layer of the thin-film tape to form second patterns repeatedly arranged on the adhesive layer of the thin-film tape, where the second pattern comprise a second alignment identifier; an alignment detection apparatus, which detects an alignment offset between the first alignment identifier of the first patterns and the second alignment identifier of the second patterns on the thin-film tape; and a controller, which is configured to regulate the rotational speed of the first active roller and that of the second active roller on the basis of the alignment offset obtained, thus allowing the alignment offset to converge within a preset offset threshold range.

Description

Film processing system and method

This application claims the priority of the Chinese patent application whose application date is June 1, 2020 and the application number is 202010486031.8, the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the field of film processing, in particular to a film processing system and method.

Background technique

The roll-to-roll imprinting equipment in the prior art is generally used for single-layer structure imprinting. For multi-layer flexible printed circuits (Flexible Printed Circuit, FPC), including touch modules, traditional solutions are prepared piece by piece (exposure, etching, alignment and bonding), with low process efficiency, poor foldability, and large size The circuit line width is about 10 microns, and there is still a pollution problem.

There is another problem that is difficult to overcome when applying roll-to-roll imprinting equipment to flexible printed circuits. Due to the flexibility of the flexible printed circuit, it is difficult to precisely control the tension or stretch of the flexible printed circuit, so that it is difficult to perform alignment during subsequent processing such as exposure, etching, or alignment and bonding. In the prior art, a tension roller is usually used to detect the tension or stretch of the flexible printed circuit. However, the current tension roller has problems such as insufficient detection accuracy, and the control of the tension or stretch of the flexible printed circuit cannot be satisfied. The requirements of normal industrial production.

In addition, when performing further processing on the film, such as alignment and imprinting, the required alignment accuracy is relatively high. The current roll-to-roll imprinting equipment usually encounters alignment when applied to the further processing of flexible films. The accuracy cannot meet the requirements.

Therefore, it is necessary to propose an improved film processing program.

Summary of the invention

The purpose of the present invention is to provide a film processing system and method, which can achieve precise alignment when processing the film strip.

In order to achieve the purpose of the invention, according to one aspect of the invention, the invention provides a film processing system, which includes: a first active roller configured to be controlled to rotate, and the film belt is driven forward through the first active roller , The film tape that enters the first driving roller includes a first pattern repeatedly arranged along the length of the film tape, wherein the first pattern includes a first alignment mark; the gluing device is configured to come from the first driving An adhesive layer is formed on the film belt in the direction of the roller; the second active roller is configured to be controlled to rotate, and the film belt after the adhesive layer is formed is driven forward by the second active roller, the second active roller is a roller An embossing structure is provided on the surface, and the roller surface of the second active roller is embossed on the adhesive layer of the film tape to form a second pattern repeatedly arranged on the adhesive layer of the film tape, wherein the second The pattern includes a second alignment mark; an alignment detection device that detects the alignment deviation of the first alignment mark of the first pattern and the second alignment mark of the second pattern on the film tape passed from the second driving roller The controller is configured to regulate the rotation speed of the first active roller and the second active roller based on the alignment deviation obtained by the alignment detection device, so that the alignment deviation converges to a predetermined deviation threshold range.

According to another aspect of the present invention, the present invention provides a film processing method, which includes: the film belt is driven forwardly via a first driving roller, wherein the film belt entering the first driving roller includes The first pattern is repeatedly arranged in the length direction, the first pattern includes the first alignment mark; the gluing device forms a glue layer on the film tape from the direction of the first driving roller; the film tape after forming the glue layer passes through the second driving roller The roller is driven forward, the second active roller is provided with an embossing structure on the surface of the roller, and the roller surface of the second active roller is embossed on the adhesive layer of the film tape so that A second pattern that is repeatedly arranged is formed on the layer, wherein the second pattern includes a second alignment mark; the alignment detection device detects the first alignment mark and the first pattern of the first pattern on the film tape passed from the second driving roller The alignment deviation of the second alignment mark of the two patterns; the controller regulates the rotation speed of the first active roller and the second active roller based on the alignment deviation obtained by the alignment detection device, so that the alignment deviation converges to a predetermined Deviation threshold range.

Compared with the prior art, the film processing system and method of the present invention regulate the rotation speed of the first active roller and the second active roller, so that the second alignment mark of the second pattern and the first alignment mark of the first pattern are The alignment deviation converges to the predetermined deviation threshold range, thereby achieving accurate alignment of the first pattern and the second pattern.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of the film processing system in the first embodiment of the present invention;

2 is a schematic diagram of a plurality of first patterns on the film tape of the present invention;

3 is a schematic diagram of the forming process of the touch film in an embodiment of the present invention;

4 is a schematic diagram of the forming process of the touch film in another embodiment of the present invention;

5 is a schematic diagram of the structure of the film processing system in the second embodiment of the present invention;

Figure 6 is a schematic diagram of various forms of the film tape in the present invention during processing;

FIG. 7 is a schematic structural diagram of the feeding component of the film processing system in an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of the structure of the receiving component of the film processing system in an embodiment of the present invention.

detailed description

In order to further illustrate the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific embodiments, structure, features and effects of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

The first embodiment of the thin film processing scheme

According to one aspect of the present invention, the present invention provides a film processing system in which the degree of stretch of the film strip located between the two active rollers can be precisely adjusted by adjusting the rotation speed of the two active rollers.

FIG. 1 is a schematic diagram of the structure of the thin film processing system in an embodiment 100 of the present invention. As shown in FIG. 1, the film processing system 100 includes a first active roller 110, a second active roller 120, a stretch detection device 130 and a controller 140.

The first driving roller 110 can be rotated under the control of the controller 140. FIG. 1 exemplarily shows the rotation direction R1 of the first driving roller 110, and the rotation of the first driving roller 110 can be The film tape 200 is driven to be transported forward in the direction of the arrow F1. The controller 140 can control the rotation speed and/or the rotation direction of the first driving roller 110.

The second driving roller 120 can also be rotated under the control of the controller 140. FIG. 1 exemplarily shows the rotation direction R2 of the second driving roller 120, and the rotation of the second driving roller 120 can be driven. The film tape 200 from the first driving roller 110 is conveyed forward in the direction of the arrow F2. The controller 140 can control the rotation speed and/or the rotation direction of the second driving roller 120.

The stretch detection device 130 is configured to detect the distance value between the positioning marks on the film tape 200 located between the first driving roller 110 and the second driving roller 120. In one embodiment, the stretch detection device 130 may include a photoelectric sensor, which can recognize the positioning mark on the film tape 200 and determine the distance between two positioning marks based on this. In another embodiment, the stretch detection device 130 may include an image acquisition device that can take a picture of the film tape 200, and the position on the film tape 200 can be identified according to the taken picture. Mark, and determine the distance value between the positioning marks based on this.

The film tape 200 may be a continuous film, and the film tape 200 has a certain elasticity. In an embodiment, the film tape 200 may be a touch film or a raw material film made of a touch film, or other types of films. In one embodiment, the film tape 200 includes a first pattern repeatedly arranged along the length of the film tape. 2 is a schematic diagram of a plurality of first patterns on the film tape 200 in the present invention, in which the example shows three first patterns, respectively 210a, 210b and 210c, in each first pattern there is a positioning Mark 211, the positioning mark is a line segment. Of course, in other embodiments, the positioning mark may also be a circle mark, a cross mark or other shapes of marks. The first pattern may be any pattern, which is not limited in the present invention. It can be seen that the distance D1 between the two positioning marks 211 between two adjacent first patterns can very directly reflect the degree of stretch of the film tape 200.

The controller 140 is electrically connected to the stretch detection device 130, so that the controller 140 can receive the detection signal from the stretch detection device 130, that is, the distance value detected by the stretch detection device. The controller 140 is electrically connected to the first active roller 110 and the second active roller 120, so that the controller 140 can send control signals to the first active roller 110 and the second active roller 120 to control the first active roller 110 and the second active roller 120. The rotation speed and/or the direction of rotation of the roller 110 and the second driving roller 120. The controller 140 regulates the rotation speed of the first active roller 110 and the second active roller 120 _{based on the distance value D real} detected by the stretch detection device 130 _{, so that the distance value D real} converges to a predetermined distance threshold range D _rangeth .

In specific implementation, when the detected distance value D _{real is} greater than the predetermined distance threshold range D _rangeth , the controller 140 may adjust the rotation speed of the first active roller 110 and the second active roller 120, so that the The speed of the film tape 200 from the roller 110 is greater than the speed of the film tape 200 from the second active roller 120, so that the stretch of the film tape 200 is reduced, so that the detected distance value D _{real can be} reduced When the detected distance value D _{real is} less than the predetermined distance threshold range D _rangeth , the controller 140 may adjust the rotation speed of the first active roller 110 and the second active roller 120, so that the transmission from the first active roller 110 The speed of the film tape 200 is lower than the speed of the film tape 200 passing from the second active roller 120, so that the stretch of the film tape 200 is increased, which can increase the detected distance value D _real . Through continuous adjustment by the controller 140, the distance value D _real can finally converge to a predetermined distance threshold range D _rangeth .

In this way, by adjusting the rotation speeds of the first driving roller 110 and the second driving roller 120, the distance value D _real between the positioning marks 211 on the film belt 200 located between the first driving roller and the second driving roller converges to a predetermined value. The distance threshold range D _rangeth , so as to achieve precise control of the stretch of the film tape. Specifically, the stretching accuracy of the film tape 200 can be controlled within an error range of 0.2 mm, for example, the predetermined distance threshold range D _rangeth can be 348 cm±0.01 mm.

In order to achieve a good control effect, the length of the film strip 200 between the first active roller 110 and the second active roller 120 can be set within a suitable length range. In one embodiment, the length of the film strip 200 between the first driving roller 110 and the second driving roller 120 is related to the elastic modulus, the film tension, the cross-sectional area of the film, and the required adjustment deformation, such as The following conditions are satisfied: ΔL=1/E×L×T/S, where ΔL is the amount of deformation, L is the length, T is the film tension, S is the cross-sectional area of the film, and E is the elastic modulus of the film. The proper length of the film strip 200 between the first driving roller 110 and the second driving roller 120 can enable the controller 140 to adjust the amount of deformation accurately enough.

In one embodiment, in order to set the length of the film tape 200 between the first driving roller 110 and the second driving roller 120, the film processing system 100 may further include a first driving roller located on the transport path of the film tape 200. A roller set 160 between 120 and the second driving roller 130. The roller set 160 may include one or more conductive rollers 161 through which the film strip from the first active roller 110 is transferred to the second active roller 120, and the film passing through the one or more conductive rollers The belt can form one or more V-shapes. As shown in FIG. 1, only one conductive roller 161 is shown. At this time, the film strip passing through the one conductive roller 161 can form a V-shape. What needs to be explained here is that the V-shape is a generalized concept. It does not require that both sides have the same inclination angle, nor does it require that the vertex is a point, but it can also be a line, that is, it also includes many V-like shapes. shape. Of course, in another embodiment, the conductive roller 161 may not be provided as required. In this case, the film strip 200 between the first driving roller 110 and the second driving roller 120 may be in-line.

In an embodiment, the film processing system 100 may further include a tension roller 150 located between the first driving roller 110 and the second driving roller 120 on the transport path of the film tape 200. The tension roller 150 is configured to detect the tension value of the film tape 200. The controller 140 may also be electrically connected to the tension roller 150 to receive a detection signal from the tension roller 150, that is, the detected tension value. The controller 140 may also adjust the rotation speed of the first active roller 110 and the second active roller 120 based on the tension value detected by the tension roller 150, so that the tension value converges to a predetermined tension threshold range. The setting of the tension roller 150 can speed up the convergence speed of the feedback system.

The film processing system provided by the present invention can be used to precisely adjust the stretching degree of the film strip located between the two active rollers, so that the film strip can be exposed, etched or aligned and laminated on the film strip. Accurate alignment is carried out in the middle to meet the requirements of normal industrial production.

According to another aspect of the present invention, the above-mentioned thin film processing system can also be implemented as a thin film processing method. The film processing method includes the following steps: the film strip is sequentially driven forward by a first driving roller and a second driving roller, wherein the first driving roller and the second driving roller are both configured for controllable rotation; detecting The distance value between the positioning marks on the film belt located between the first driving roller and the second driving roller; and, based on the detected distance value, the rotation speed of the first driving roller and the second driving roller is adjusted so that the The distance value converges to the predetermined distance threshold range.

The film processing method further includes: using a tension roller located between the first driving roller and the second driving roller to detect the tension value of the film tape; and adjusting the tension value of the first driving roller and the second driving roller based on the tension value detected by the tension roller. The rotation speed of the second active roller in turn makes the tension value converge within the predetermined tension threshold range.

For other technical content of the thin film processing method, reference may be made to the related description of the thin film processing system 100 mentioned above, which will not be repeated here.

The second embodiment of the film processing scheme

As mentioned in the background art, roll-to-roll film imprinting equipment is generally used for single-layer structure imprinting. For multi-layer flexible circuits, including touch modules, traditional solutions are prepared piece by piece (exposure, etching, alignment and bonding), with low process efficiency, poor foldability, large circuit line widths of about 10 microns, and efficiency Low. In the second embodiment of the present invention, the roll-to-roll process can be applied to the preparation process of the film tape including the touch module.

Figure 3(d) shows an embodiment of a touch film. The touch film includes a base layer 311, a first holding layer 313 on the base layer, a first conductive layer 313 formed in the first holding layer 313, a second holding layer 325 on the first holding layer 313, and In the second conductive layer 330 formed in the second holding layer 325, the base layer 311, the first holding layer 313 and the first conductive layer 313 together constitute the initial thin film 310. The first holding layer 313 may be printed by an adhesive layer, so it may also be called an adhesive layer. In the process of forming the touch film, as shown in FIG. 3(a), an initial film 310 may be obtained first, and then as shown in FIG. 3(b), a glue layer 325' may be coated on the initial film 310, Subsequently, as shown in FIG. 3(c), a groove 326 can be embossed on the adhesive layer 325', and the embossed adhesive layer 325 can also be called a second holding layer. Finally, as shown in Figure 3(d) As shown in ), the second conductive layer 330 can be filled in the groove 326 to finally obtain a touch film.

Fig. 4 illustrates the formation process of the touch film in another embodiment. As shown in Figure 4(a), Figure 4(b), Figure 4(c) and Figure 4(d), the formation process of the touch film in Figure 3 is basically the same as the formation process of the touch film in Figure 4 The same, the difference is: in FIG. 3, the second holding layer 325 and the second conductive layer 330 are formed on one side of the first conductive layer 312, while in FIG. 4, the second holding layer 325 and the second conductive layer are formed. The layer 330 is formed on the other side of the base layer 311, that is, the second holding layer 325 and the second conductive layer 330 and the first holding layer 313 and the first conductive layer 312 are located on different sides of the base layer 311.

When performing the groove forming steps shown in Figs. 3(b) and 3(c) or performing the groove forming steps shown in Figs. 4(b) and 4(c), it is necessary to consider on the second conductive layer 330 Alignment of the pattern area on the first conductive layer 312 with the pattern area on the first conductive layer 312. The pattern of the second conductive layer 330 is determined by the pattern of the groove 326, and the groove forming step may also be referred to as a pattern forming step. However, when the pattern formation step is performed on the initial film 310 using the roll-to-roll process, the stretching of the film tape formed by the initial film 310 is very critical, because this directly determines whether the pattern area formed on the film tape subsequently is different from the original The pattern area (the pattern formed by the first conductive layer 312) is aligned.

In addition, although FIGS. 3 and 4 exemplarily show two embodiments of the touch film, those of ordinary skill in the art can also think of other embodiments of the touch film according to the enlightenment of the present invention. In addition, the film tape mentioned in this article can be a film tape formed by the initial film 310, or a film tape formed by a film of other structures. The film tape in the present invention can be used to prepare touch films, and can also be used to prepare other films. Use the film.

FIG. 5 is a schematic diagram of the structure of the film processing system in the second embodiment 400 of the present invention. As shown in FIG. 5, the film processing system 400 includes a first active roller 410, a second active roller 420, a stretch detection device 430, a controller 440, a roller set 460 and a tension roller 450. The working mode and function of the first active roller 410, the second active roller 420, the stretch detection device 430, the controller 440, the roller set 460, and the tension roller 450 in FIG. The working modes and functions of the two active rollers 120, the stretching detection device 130, the controller 140, the roller set 160 and the tension roller 150 are basically the same. In order to avoid repetition, this will not be repeated here, and the difference between the film processing system 400 in FIG. 5 and the film processing system 100 in FIG. 1 is mainly introduced here.

The film processing system 400 in FIG. 5 can not only precisely adjust the stretching degree of the film tape 510 between the two

active rollers

410 and 420, but also form an embossing layer 520 on the film tape 510 (also known as After embossing the adhesive layer), the film tape 500 forming the embossing layer 520 is obtained. The cross-sectional structure of the film tape 500 output by the film processing system 400 is shown in FIG. 5(a). An embossed layer 520 is formed on 510. In some cases, the film tape 510 may also be referred to as a pre-processed film tape, and the film tape 500 may also be referred to as a post-processed film tape.

As shown in FIG. 5 and FIG. 6, the film tape 510 is driven forward through the first driving roller 410. The film tape 510 entering the first driving roller 410 includes a first pattern repeatedly arranged along the length of the film tape, wherein the first pattern includes a first alignment mark. As shown in FIG. 6a, it shows a schematic top view of the film strip 510, in which two first patterns 518 are displayed. Each first pattern 518 includes a first alignment mark 512 located at four corners, a visible area 513, a frame area 514, and a lead area 515. Of course, each first pattern 510 also includes a stretched positioning mark 511. It should be noted that in the first embodiment described in FIG. 1, this stretched positioning mark 511 is called a positioning mark. In the example, in order to distinguish it from the first alignment mark 512, it is referred to herein as a stretch positioning mark 511. Of course, FIG. 6(a) is only an example. In other examples, the number of first alignment marks 512 of each first pattern 510 can also be three, two or more, and the number of first alignment marks 512 is The position can also be set as required, and the visible area 513, the frame area 514, and the lead area 515 of each first pattern 510 can also be set as required. The shape of the first alignment mark 512 is a circle with a cross, of course, it can also have other shapes. In one embodiment, the film tape 510 may be a film tape formed by the initial film 310 shown in FIGS. 3 and 4, wherein the pattern formed on the first conductive layer 312 is a pattern formed on the first film tape 510 One pattern.

As shown in FIG. 5, the thin film processing system 400 further includes a gluing device 472 and an alignment detection device 490. The glue applying device 472 is used to form a glue layer on the film strip 510 from the direction of the first active roller 410. In an embodiment, the glue applying device 472 may include a glue dispensing head, and the glue dispensing head reciprocates to complete glue dispensing on the film tape 510. In another embodiment, the gluing device 472 may include an anilox roller, and the anilox roller is rotated to complete the gluing on the film belt 510. In still another embodiment, the glue applying device 472 includes one or more groups of glue heads, and each group of glue heads includes at least one automatic glue head and at least one manual glue head. The automatic glue head can be Glue is automatically dispensed on the film tape 510 in a sliding manner; the manual glue dispensing head is slidably dispensed on the film tape 510 manually.

The second active roller 420 has an embossing structure on the roller surface, and the roller surface of the second active roller 420 is embossed on the adhesive layer of the film tape 510 to form an embossed adhesive layer, that is, the embossed layer 520 . The embossed structure may be a micro-scale structure or a nano-scale structure. The second driving roller 420 may also be referred to as a plate roller.

In conjunction with FIG. 5 and FIG. 6, the film tape 500 formed with the embossing layer 520 is driven forward through the second driving roller 420. The embossing layer 520 includes a second pattern repeatedly arranged along the length of the film tape, wherein the second pattern includes a second alignment mark. As shown in FIG. 6(b), it shows a top view of the embossing layer 520 formed on the film tape 510. As shown in FIG. Two second patterns 528 are shown therein. Each second pattern 528 includes a second alignment mark 522 located at four corners, a visible area 523, a frame area 524, and a lead area 525. Of course, FIG. 6(b) is only an example. The number of second alignment marks 522 of each second pattern 528 can be three, two or more, and the position of the second alignment marks 522 can also be set as required. The visible area 523, the frame area 524, and the lead area 525 of each second pattern 520 can also be set as required. The shape of the second alignment mark 522 is a dot, of course, it may also have other shapes. In one embodiment, the embossing layer 520 may be the second holding layer 325 formed on the initial film 310 shown in FIGS. 3 and 4, that is, the adhesive layer after embossing, formed on the second holding layer 525 The pattern of is the second pattern 528 on the embossing layer 520.

The alignment detection device 490 is used to detect the alignment deviation of the first alignment mark of the first pattern and the second alignment mark of the second pattern on the film tape 510 that is transferred from the second driving roller 420. As shown in Fig. 6(c), the first alignment mark 512 of the first pattern 518a and the second alignment mark 522 of the second pattern 528a are substantially completely aligned, and the alignment deviation at this time is 0, as shown in Fig. 6 As shown in (d), the first alignment mark 512 of the first pattern 518a and the second alignment mark 522 of the second pattern 528a are not aligned, and the alignment deviation at this time is D2. The alignment detection device 490 may include a photoelectric sensor, which can recognize the first alignment mark of the first pattern and the second alignment mark of the second pattern, and determine the difference between the alignment marks accordingly. Alignment deviation. In another embodiment, the alignment detection device 490 may include an image acquisition device that can take a picture of the first pattern and the second pattern, and the image of the first pattern can be identified based on the photographs taken. The first alignment mark and the second alignment mark of the second pattern are used to determine the alignment deviation between the alignment marks.

The controller 440 is also electrically connected to the alignment detection device 490 and receives the detection signal of the alignment detection device 490. The controller 440 may adjust the rotation speed of the first active roller 410 and the second active roller 420 based on the alignment deviation obtained by the alignment detection device 490, so that the alignment deviation converges to a predetermined deviation threshold range. In specific implementation, the alignment detection device 490 continuously detects the alignment deviation of each group of corresponding first patterns and second patterns, and the current alignment deviation detected by the alignment detection device 490 exceeds the predetermined deviation threshold range At this time, the controller 440 adjusts the rotation speeds of the first active roller 410 and the second active roller 420, and then adjusts the stretching degree of the film strip 510 between the first active roller 410 and the second active roller 420, so as to enable subsequent detection The obtained alignment deviation is closer to the predetermined deviation threshold range, and the alignment deviation is made to converge to the predetermined deviation threshold range through one or more adjustments. For example, the predetermined deviation threshold range may be ±0.01 mm, so that the second pattern in the imprinting layer 520 and the first pattern in the film tape 510 can be aligned very accurately.

As shown in Figure 6, the first alignment mark of the first pattern includes multiple, such as four, and the second alignment mark of the second pattern includes multiple, such as four. The second alignment marks correspond to each other. The alignment detection device 490 detects a set of corresponding first patterns and second patterns to obtain a plurality of alignment deviations of a plurality of corresponding first alignment marks and second alignment marks, and the controller 440 controls The rotation speeds of the first active roller 410 and the second active roller 420 in turn make each of the alignment deviations detected for each group of the corresponding first pattern and second pattern converge within the predetermined deviation threshold range.

As shown in Figure 6(c), in the film tape 500 finally obtained, the first pattern 518 and the second pattern 528 are aligned with each other to form a continuous film product unit. The cross-sectional view of each film product unit can refer to the figure 3(c) and Figure 4(c). Then, as shown in Figures 3(d) and 4(d), after filling the film product unit with a conductive layer, the touch film unit can be formed, and finally the touch film unit is removed from the film tape Cut off.

In the second embodiment, the controller 140 may have three feedback signals, which are the alignment deviation of the first pattern and the second pattern obtained by the alignment detecting device 490, and the stretching detected by the stretching detecting device 430. The distance value between the positioning marks and the tension value detected by the tension roller 450, the controller 140 combines these three feedback signals to adjust and regulate the rotation speed of the first active roller and the second active roller, so that the three feedback signals Respectively converge within a predetermined distance threshold range, a predetermined tension threshold range, and a predetermined deviation threshold range. The controller 140 can control the priority of each feedback signal to be controlled in the adjustment process as needed, as long as the final goal can be achieved, that is, the detected alignment deviation control will converge to the predetermined deviation threshold range, and will also detect The obtained distance value control converges to the predetermined distance threshold value range, and the detected tension value control converges to the predetermined tension threshold value range.

For example, in the process of adjusting the rotation speed of the first active roller and the second active roller by the controller 140, the detected alignment deviation may have a higher priority than the detected distance value convergence to the predetermined deviation threshold range. Priority within a predetermined distance threshold range. In other words, in order to make the alignment deviation converge within the predetermined deviation threshold range, in certain periods, it may be necessary to deliberately adjust the detected distance value to deviate from the predetermined distance threshold range in order to reduce the alignment deviation. However, in the end, it is still necessary to adjust the detected distance value to converge to the predetermined distance threshold range.

As shown in Figure 6(d), the first alignment mark 512 lags behind the second alignment mark 522 (taking the film belt 500 moving from left to right as an example), which can be adjusted by adjusting the first active roller and the second active roller. The rotation speed of the roller is adjusted to reduce the stretching degree of the film tape 510. Since the length of the second pattern 528 is equal to the circumference of the second active roller 420, the length of the second pattern 528 is unchanged, and the length of the first pattern 518 becomes shorter, so that after a period of matching, for example, After one or more of the first pattern 518 and the second pattern 528 are overlapped and aligned, the first alignment mark 512 of the first pattern catches up with the second alignment mark 522 of the second pattern, and is finally aligned. In this way of regulation, the first few film product units on the film tape 500 do not meet the top and bottom alignment requirements. As the regulation is completed, the film product units on the film tape 500 will meet the top and bottom alignment requirements.

As shown in FIG. 5, the film processing system 400 may further include: a glue roller 474 arranged behind the gluing device 472 and adjacent to the second active roller 420, and arranged on the second active roller 420 Next, a peeling roller 480 placed next to the second active roller 420, and a curing device 476. The film tape forming the glue layer passes through the rubber roller 474 and passes through the gap between the second driving roller 420 and the rubber roller 474 to be transferred to the second driving roller 420. The film tape passes through the second driving roller 420. Passing through the gap between the second driving roller 420 and the peeling roller 480 is transferred to the peeling roller 480. The curing device 476 is used for curing the adhesive layer imprinted by the second active roller 420 on the film tape. The peeling roller 480 is used to peel off the embossed adhesive layer from the second active roller 420, and the pressing roller 474 is used to squeeze the adhesive layer to make the adhesive layer more uniform. The curing device 476 may be a thermal curing device or a light curing device, such as a curing lamp, which may be a mercury lamp or an LED lamp.

It should be noted that various modifications can be made to the second embodiment of the present invention without departing from the basic idea of the second embodiment of the present invention. In a modified embodiment, the pressure roller 450 and/or the stretch detection device 430 may not be provided in the film processing system 400. In this case, the controller 400 may only obtain the results based on the detection by the alignment detection device 490. Adjusting the positioning deviation of the first active roller 410 and the second active roller 420 can also achieve the effect that the positioning deviation converges to a predetermined deviation threshold range. In another modified embodiment, the first active roller 410 is configured such that the film strip passing into the first active roller 410 and the film strip passing out of the first active roller 410 form an obtuse angle, which can be easily adjusted. In yet another modified embodiment, the roller set 460 may not be provided according to application requirements. In another modified embodiment, the pressing roller 474, peeling roller 480, and curing device 476 may not be provided according to application requirements, or the pressing roller 474, peeling roller 480, and curing device 476 may be changed according to application requirements. The installation location of the device 476.

As shown in FIG. 7, in one embodiment, the film processing system 400 may further include a loading component 710, and the loading component 710 is used to convey the film to the first active roller 410. The feeding assembly 710 includes: a feeding roller 711, a film take-up roller 712, a dust sticking device 713, and a feeding tension roller 714.

The unwinding roller 711 is used to place a first composite film tape 550, which includes a film tape 510 and a first protective film 560 attached to the film tape. The take-up roller 712 is used to receive the first protective film 560 separated from the first composite film tape 550. The dust sticking device 713 is used to perform dust sticking treatment on the film tape 510 separated from the first protective film tape. The dust sticking device 713 in FIG. 7 can perform double-sided sticking processing on the film tape 510. The film tape 510 passes through the dust sticking device 713 and the feeding tension roller 714 in sequence. The loading tension roller is used to control the unwinding tension.

The position of the film take-up roller 712 can also be adjusted. Preferably, the film take-up roller 712 may be placed before the gluing device 472 and after finally contacting the component on the first protective film side of the first composite film tape 550. For example, as shown in FIG. 5, the film take-up roller 712 may be placed at a position adjacent to the front of the pressure roller 450.

Of course, the loading assembly 710 may also include other components, such as a deviation correction sensor and a deviation correction device. The correction sensor is used to detect whether the film strip is offset, and if the correction sensor detects the deviation, it controls the The correction device performs correction and adjusts the deviation in the direction perpendicular to the conveying direction of the film tape.

As shown in FIG. 8, the film processing system 400 may further include a receiving assembly 810, and the receiving assembly 810 may be used to receive the film tape 500 from the second active roller 420. The receiving assembly 810 may include a protective film roll 811, a composite device 812, and a receiving roll 813. The protective film roll 811 is used to provide a second protective film. The compounding device 812 is used for compounding the second protective film and the film tape 500 transferred from the second active roller to form a second composite film tape. The receiving roller 813 is used to recover the second composite film tape.

The receiving assembly 810 may also include a secondary curing device and a receiving tension roller. The secondary curing device is used for re-curing the adhesive layer imprinted on the film tape before the film tape 500 is combined with the second protective film. The winding tension roller is used to control the winding tension.

According to another aspect of the second embodiment of the present invention, the present invention also provides a film processing method, which includes: the film strip is driven forward via a first driving roller, wherein the film strip entering the first driving roller The upper includes a first pattern repeatedly arranged along the length of the film tape, the first pattern includes a first alignment mark; the gluing device forms a glue layer on the film tape from the direction of the first active roller; after the glue layer is formed The film strip is driven forward by a second driving roller. The second driving roller is provided with an embossing structure on the roller surface. The roller surface of the second driving roller is embossed on the adhesive layer of the film tape to The adhesive layer of the film tape is formed with a second pattern repeatedly arranged, wherein the second pattern includes a second alignment mark; the alignment detection device detects the first pattern of the first pattern on the film tape transmitted from the second driving roller The alignment deviation between the alignment mark and the second alignment mark of the second pattern; the controller adjusts the rotation speed of the first active roller and the second active roller based on the alignment deviation obtained by the alignment detection device, so that the The alignment deviation converges to the predetermined deviation threshold range.

For other technical content of the thin film processing method, reference may be made to the related description of the thin film processing system 400 mentioned above, which will not be repeated here.

In this article, the terms "include", "include", or any other variations thereof are intended to encompass non-exclusive inclusion, in addition to including those elements listed, but also other elements that are not explicitly listed.

In this article, the terminology of front, back, upper, lower, etc. involved is defined in terms of the position of the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In the case of no conflict, the above-mentioned embodiments and the features in the embodiments herein can be combined with each other.

The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims

A thin film processing system, characterized in that it comprises:

The first driving roller, which is configured for controlled rotation, the film belt is driven forward by the first driving roller, and the film belt entering the first driving roller includes those repeatedly arranged along the length of the film belt The first pattern, wherein the first pattern includes a first alignment mark;

Gluing device, which is configured to form a glue layer on the film strip coming from the direction of the first active roller;

The second driving roller is configured for controlled rotation, and the film strip after forming the adhesive layer is driven forward through the second driving roller, and the second driving roller is provided with an embossing structure on the surface of the roller. The roller surface of the second driving roller is stamped on the adhesive layer of the film tape to form a second pattern repeatedly arranged on the adhesive layer of the film tape, wherein the second pattern includes a second alignment mark;

Alignment detection device, which detects the alignment deviation of the first alignment mark of the first pattern and the second alignment mark of the second pattern on the film tape conveyed from the second driving roller;

The controller is configured to regulate the rotation speed of the first active roller and the second active roller based on the alignment deviation obtained by the alignment detection device, so that the alignment deviation converges to a predetermined deviation threshold range.
The thin film processing system according to claim 1, further comprising:

A stretch detection device configured to detect the distance value between two stretch positioning marks on the film belt between the first driving roller and the second driving roller;

The controller is further configured to adjust the rotation speed of the first active roller and the second active roller based on the distance value detected by the stretch detection device, so that the distance value converges to a predetermined distance threshold range.
The film processing system according to claim 2, wherein each first pattern is provided with a stretch positioning mark, and the stretch detection device detects two adjacent first patterns on the film strip The value of the distance between the two stretched positioning marks on the upper side; or

Each first pattern is provided with a plurality of stretch positioning marks, and the detection device detects the distance value and/or adjacent value between any two stretch positioning marks on each first pattern on the film tape. The value of the distance between any two stretch positioning marks on the first pattern; or

One or more of the first alignment marks on the first pattern are used as stretch positioning marks.
The thin film processing system according to claim 2, wherein:

When the detected distance value is greater than the predetermined distance threshold range, the controller adjusts the rotation speeds of the first active roller and the second active roller so that the speed of the film strip from the first active roller is greater than that from the second active roller. The speed of the film strip from the roller,

When the detected distance value is less than the predetermined distance threshold range, the controller adjusts the rotation speed of the first active roller and the second active roller, so that the speed of the film strip from the first active roller is lower than that from the second active roller. The speed of the film strip from the roll.
The film processing system according to claim 2, wherein when the controller regulates the rotation speeds of the first active roller and the second active roller, the detected alignment deviation has a higher priority than that of converging to a predetermined deviation threshold range. The detected distance value converges to the priority of the predetermined distance threshold range.
The thin film processing system according to claim 2, wherein:

The alignment detection device includes a photoelectric sensor or an image acquisition device; or

The stretch detection device includes a photoelectric sensor or an image acquisition device.
The thin film processing system of claim 1, wherein:

The alignment detection device continuously detects the alignment deviation of the first pattern and the second pattern corresponding to each group. When the current alignment deviation detected by the alignment detection device exceeds a predetermined deviation threshold range, the controller adjusts The rotation speed of the first driving roller and the second driving roller is further adjusted to adjust the stretching degree of the film strip between the first driving roller and the second driving roller, so that the alignment deviation obtained by subsequent detection is closer to the predetermined deviation threshold range , Through one or more adjustments to make the alignment deviation converge within a predetermined deviation threshold range.
The thin film processing system according to claim 7, wherein:

The first pattern includes a plurality of first alignment marks, the second pattern includes a plurality of second alignment marks, and the plurality of first alignment marks and the plurality of second alignment marks correspond to each other,

The alignment detection device detects a set of corresponding first patterns and second patterns to obtain multiple alignment deviations of multiple corresponding first alignment marks and second marks, and the controller regulates the first active roller and the second The rotation speed of the two active rollers further makes each alignment deviation detected for each group of the corresponding first pattern and second pattern converge within the predetermined deviation threshold range.
The thin film processing system according to claim 1, further comprising:

The roller set located between the first driving roller and the second driving roller on the conveying path of the film tape includes a plurality of conductive rollers, and the film tape passing through the plurality of conductive rollers constitutes one or more V-shaped.
The thin film processing system of claim 1, wherein:

The length of the film strip between the first driving roller and the second driving roller The elastic modulus, film tension, and cross-sectional area of the film are related to the required adjustment deformation.
The thin film processing system according to claim 1, further comprising:

The first tension roller located between the first driving roller and the second driving roller on the transport path of the film tape is configured to detect the tension value of the film tape;

The controller is further configured to adjust the rotation speed of the first active roller and the second active roller based on the tension value detected by the first tension roller, so that the tension value converges to a predetermined tension threshold range.
The thin film processing system of claim 11, wherein:

When the detected tension value is greater than the predetermined tension threshold range, the controller adjusts the rotation speeds of the first active roller and the second active roller so that the speed of the film strip from the first active roller is greater than that from the second active roller. The speed of the film strip from the roller,

When the detected tension value is less than the predetermined tension threshold range, the controller adjusts the rotation speeds of the first active roller and the second active roller so that the speed of the film strip from the first active roller is lower than that from the second active roller. The speed of the film strip from the roll.
The thin film processing system according to claim 1, further comprising:

A glue roller arranged after the gluing device and adjacent to the second active roller, wherein the film tape forming the glue layer passes through the glue roller and passes through the gap between the second active roller and the glue roller. Transfer to the second driving roller;

A peeling roller arranged behind the second active roller and adjacent to the second active roller, wherein the film tape passes through the second active roller and passes through the gap between the second active roller and the peeling roller to be transferred to the peeling roller ；

The first curing device is used for curing the adhesive layer imprinted by the second active roller on the film tape.
The thin film processing system of claim 1, wherein:

The glue applying device includes a glue dispensing head, and the glue dispensing head reciprocates to complete glue dispensing; or;

The gluing device includes an anilox roller, and the anilox roller completes gluing by rotating; or

The gluing device includes one or more groups of dispensing heads, each group of dispensing heads includes at least one automatic dispensing head and at least one manual dispensing head, the automatic dispensing head slidably on the film tape Automatic dispensing; the manual dispensing head can slidably dispense on the film tape manually.
The film processing system according to claim 1, characterized in that it further comprises a loading component, and the loading component is used to convey the film to the first driving roller,

The feeding component includes:

A discharge roller for placing a first composite film tape, the first composite film tape including a film tape and a first protective film attached to the film tape;

A film take-up roller for receiving the first protective film separated from the first composite film tape;

Dust sticking device, which is used for sticking dust on the film tape separated from the first protective film tape;

A feeding tension roller, the film tape passes through the dust sticking device and a feeding tension roller in sequence, and the feeding tension roller is used to control the unwinding tension.
The thin film processing system according to claim 15, wherein the loading assembly further comprises a deviation correction sensor and a deviation correction device,

The correction sensor is used to detect whether the film tape has an offset, and if the correction sensor detects the offset, the correction device is controlled to correct the offset and adjust the offset in the direction perpendicular to the transport direction of the film tape.
15. The film processing system according to claim 15, wherein the film take-up roller is placed before the gluing device and after finally contacting the component on the side of the first protective film of the first composite film tape.
The film processing system according to claim 1, characterized in that it further comprises a receiving component, the receiving component is used to receive the film tape from the second active roller, the receiving component includes a protective film roller, a composite Device and take-up roller,

The protective film roll is used to provide a second protective film;

The compounding device is used for compounding the second protective film and the film tape conveyed from the second active roller to form a second composite film tape;

The receiving roller is used to recover the second composite film tape.
The film processing system according to claim 18, wherein the receiving assembly includes a second curing device, and the second curing device is used to align the film tape with the second protective film before the film is combined with the second protective film. The adhesive layer imprinted on the film tape is cured again.
The film processing system according to claim 19, wherein the receiving assembly further comprises a receiving tension roller, and the receiving tension roller is used to control the winding tension.
The film processing system according to claim 1, wherein the first active roller is configured such that the film strip passing into the first active roller and the film strip passing out of the first active roller form an obtuse angle.
A thin film processing method, characterized in that it comprises:

The film tape is driven forward by the first driving roller, wherein the film tape entering the first driving roller includes a first pattern repeatedly arranged along the length of the film tape, and the first pattern includes a first alignment mark;

The gluing device forms a glue layer on the film strip coming from the direction of the first active roller;

The film tape after the adhesive layer is formed is driven forward by the second driving roller. The second driving roller is provided with an embossing structure on the surface of the roller. The roller surface of the second driving roller is impressed on the surface of the film tape. The adhesive layer is formed with a second pattern repeatedly arranged on the adhesive layer of the film tape, wherein the second pattern includes a second alignment mark;

The registration detection device detects the registration deviation of the first registration mark of the first pattern and the second registration mark of the second pattern on the film tape conveyed from the second driving roller;

The controller regulates the rotation speeds of the first active roller and the second active roller based on the alignment deviation obtained by the alignment detection device, so that the alignment deviation converges to a predetermined deviation threshold range.