Thin film processing system and method

Abstract

The present application provides a kind of film processing system and method.The film processing system includes: first active roller, it is configured to controlled rotation, film strip is driven forward by first active roller via;Second active roller, it is configured to controlled rotation, film strip from the direction of first active roller is driven forward by second active roller via;Stretch detection device, it is configured to detect the distance value between the positioning mark on the film strip between first active roller and second active roller;Controller, it is configured to control the rotational speed of first active roller and second active roller based on the distance value obtained by the stretch detection device, so that the distance value converges to the predetermined distance threshold range.In this way, by controlling the rotational speed of first active roller and second active roller, the stretch of the film strip can be adjusted very accurately.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thin film processing, and in particular, to a thin film processing system and method. BACKGROUND

[0002] The roll-to-roll imprinting device in the prior art is generally used for single-layer structure imprinting. For multi-layer flexible printed circuit (FPC), including touch module, the traditional scheme is to prepare (exposure, etching, alignment and lamination) piece by piece, which has low process efficiency, poor folding property, and circuit line width of about 10 microns, and also has pollution problem.

[0003] Another difficult problem to overcome exists when applying the roll-to-roll imprinting device to the flexible printed circuit. Since the flexible printed circuit has flexibility, it is difficult to accurately control the tension or stretch of the flexible printed circuit, so that it is difficult to perform alignment in subsequent exposure, etching or alignment and lamination processes. The tension roller is usually used to detect the tension or stretch of the flexible printed circuit in the prior art, but the current tension roller has the problem of insufficient detection accuracy, and the control of the tension or stretch of the flexible printed circuit cannot meet the requirements of normal industrial production.

[0004] Therefore, it is necessary to provide an improved thin film processing system. SUMMARY

[0005] The present application aims to provide a thin film processing system and method which can accurately regulate the stretch of the thin film belt.

[0006] To achieve the purpose of the application, according to one aspect of the present application, a thin film processing system is provided, which comprises: a first driving roller configured to be controllably rotated, a thin film belt being driven to forwardly convey via the first driving roller; a second driving roller configured to be controllably rotated, the thin film belt from the direction of the first driving roller being driven to forwardly convey via the second driving roller; a stretch detection device configured to detect a distance value between positioning marks on the thin film belt located between the first driving roller and the second driving roller; and a controller configured to regulate the rotation speed of the first driving roller and the second driving roller based on the distance value detected by the stretch detection device, so as to make the distance value converge to a predetermined distance threshold range.

[0007] According to another aspect of the present invention, a thin film processing method is provided, comprising: a thin film strip being driven forward sequentially via a first drive roller and a second drive roller, wherein both the first drive roller and the second drive roller are configured to rotate in a controllable manner; a stretch detection device detecting a distance value between positioning marks on the thin film strip located between the first drive roller and the second drive roller; and a controller adjusting the rotational speed of the first drive roller and the second drive roller based on the distance value detected by the stretch detection device, thereby causing the distance value to converge to a predetermined distance threshold range.

[0008] Compared with the prior art, the thin film processing system and method of the present invention, by adjusting the rotation speed of the first active roller and the second active roller, makes the distance between the positioning marks on the thin film belt located between the first active roller and the second active roller converge to a predetermined distance threshold range, thereby achieving precise control of the stretch of the thin film belt. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the thin film processing system in the first embodiment of the present invention;

[0010] Figure 2 This is a schematic diagram of multiple first patterns on a thin film strip in this invention;

[0011] Figure 3 This is a schematic diagram of the formation process of the touch film in one embodiment of the present invention;

[0012] Figure 4 This is a schematic diagram of the formation process of the touch film in another embodiment of the present invention;

[0013] Figure 5 This is a schematic diagram of the thin film processing system in the second embodiment of the present invention;

[0014] Figure 6 This is a schematic diagram showing the various forms of the thin film strip in the present invention during the processing.

[0015] Figure 7 This is a schematic diagram of the feeding assembly of the thin film processing system in one embodiment of the present invention;

[0016] Figure 8 This is a schematic diagram of the receiving component of the thin film processing system in one embodiment of the present invention. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0018] First embodiment of a thin film processing scheme

[0019] According to one aspect of the present invention, a thin film processing system is provided in which the stretch of a thin film belt located between two active rollers is precisely adjusted by controlling the rotational speed of two active rollers.

[0020] Figure 1 This is a schematic diagram of the thin film processing system of the present invention in one embodiment 100. Figure 1 As shown, 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.

[0021] The first drive roller 110 can rotate under the control of the controller 140. Figure 1 An exemplary diagram illustrates the rotation direction R1 of the first active roller 110, whose rotation can drive the film belt 200 forward along the direction of arrow F1. The controller 140 can control the rotation speed and / or rotation direction of the first active roller 110.

[0022] The second drive roller 120 can also rotate under the control of the controller 140. Figure 1 An exemplary illustration shows the rotation direction R2 of the second drive roller 120, which can drive the film belt 200 from the first drive roller 110 forward in the direction of arrow F2. The controller 140 can control the rotation speed and / or rotation direction of the second drive roller 120.

[0023] The tensile testing device 130 is configured to detect the distance between positioning marks on the film strip 200 located between the first drive roller 110 and the second drive roller 120. In one embodiment, the tensile testing device 130 may include a photoelectric sensor capable of identifying positioning marks on the film strip 200 and determining the distance between two positioning marks. In another embodiment, the tensile testing device 130 may include an image acquisition device capable of taking a picture of the film strip 200, identifying positioning marks on the film strip 200 based on the photograph, and determining the distance between the positioning marks.

[0024] The film strip 200 can be a continuous film, and the film strip 200 has a certain degree of elasticity. In one embodiment, the film strip 200 can be a touch film or a raw material film for making a touch film, or it can be other types of film. In one embodiment, the film strip 200 includes a first pattern that is repeated along the length direction of the film strip. Figure 2This is a schematic diagram of a plurality of first patterns on the film strip 200 of the present invention. Three first patterns are shown as an example: 210a, 210b, and 210c. Each first pattern has a positioning mark 211, which is a line segment. Of course, in other embodiments, the positioning mark can also be a circle, a cross, or other shaped mark. The first pattern can be any pattern, and the present invention does not limit it. It can be seen that the distance D1 between the two positioning marks 211 of two adjacent first patterns can directly reflect the stretchability of the film strip 200.

[0025] The controller 140 is electrically connected to the tensile detection device 130, allowing it to receive detection signals from the tensile detection device 130, specifically the distance value detected by the device. The controller 140 is also electrically connected to the first drive roller 110 and the second drive roller 120, enabling it to send control signals to these rollers to regulate their rotational speed and / or direction. The controller 140 operates based on the distance value D detected by the tensile detection device 130. real Adjusting the rotational speeds of the first drive roller 110 and the second drive roller 120, thereby making the distance value D... real Converging within a predetermined distance threshold range D rangeth .

[0026] In the specific implementation, the detected distance value D real Greater than the predetermined distance threshold range D rangeth At the same time, the controller 140 can adjust the rotational speed of the first active roller 110 and the second active roller 120, so that the speed of the film belt 200 transmitted from the first active roller 110 is greater than the speed of the film belt 200 transmitted from the second active roller 120, thereby reducing the stretch of the film belt 200. This allows the detected distance value D to be more accurate. real Decrease; in the detected distance value D real Less than the predetermined distance threshold range D rangeth At the same time, the controller 140 can adjust the rotational speed of the first active roller 110 and the second active roller 120, so that the speed of the film belt 200 transmitted from the first active roller 110 is less than the speed of the film belt 200 transmitted from the second active roller 120, thereby increasing the stretch of the film belt 200. This allows the detected distance value D to be more accurate. real Increase. Through continuous adjustment by the controller 140, the distance value D can eventually be increased. real Converging within a predetermined distance threshold range D rangeth .

[0027] In this way, by adjusting the rotational speeds of the first drive roller 110 and the second drive roller 120, the distance D between the positioning marks 211 on the film belt 200 located between the first drive roller and the second drive roller is adjusted. real Converging within a predetermined distance threshold range D rangeth This allows for precise control of the film strip's stretchability. Specifically, the stretching accuracy of the film strip 200 can be controlled within an error range of 0.2mm, for example, within a predetermined distance threshold range D. rangeth It can be 348cm ± 0.01mm.

[0028] To achieve good control, 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 range. In one embodiment, the length of the film strip 200 between the first active roller 110 and the second active roller 120 is related to the elastic modulus of the film strip, the film tension, the film cross-sectional area, and the required amount of adjustment deformation. For example, it can satisfy the following condition: ΔL = 1 / E × L × T / S, where ΔL is the deformation, L is the length, T is the film tension, S is the film cross-sectional area, and E is the elastic modulus of the film. A suitable length of the film strip 200 between the first active roller 110 and the second active roller 120 allows the controller 140 to adjust the deformation with sufficient precision.

[0029] In one embodiment, to set the length of the film strip 200 between the first drive roller 110 and the second drive roller 120, the film processing system 100 may further include a roller group 160 located between the first drive roller 110 and the second drive roller 120 along the conveying path of the film strip 200. The roller group 160 may include one or more guide rollers 161 through which the film strip from the first drive roller 110 is conveyed to the second drive roller 120. The film strip passing through the one or more guide rollers may form one or more V-shapes. Figure 1 As shown, only one guide roller 161 is displayed. In this case, the film strip passing through the guide roller 161 can form a V-shape. It should be noted that the V-shape is a broad concept; it does not require both sides to have the same angle of inclination, nor does it require the vertex to be a point. It can also be a line, encompassing many types of V-shapes. Of course, in another embodiment, the guide roller 161 can be omitted if needed, in which case the film strip 200 between the first drive roller 110 and the second drive roller 120 can be in a straight line.

[0030] In one embodiment, the thin film processing system 100 may further include a tension roller 150 located between a first drive roller 110 and a second drive roller 120 on the conveying path of the thin film belt 200. The tension roller 150 is configured to detect the tension value of the thin film belt 200. The controller 140 may also be electrically connected to the tension roller 150 to receive a detection signal from the tension roller 150, i.e., the detected tension value. The controller 140 may also adjust the rotational speed of the first drive roller 110 and the second drive roller 120 based on the tension value detected by the tension roller 150, thereby causing the tension value to converge to a predetermined tension threshold range. The tension roller 150 can accelerate the convergence speed of the feedback system.

[0031] The thin film processing system provided by this invention can precisely adjust the stretch of the thin film belt located between two active rollers, thus enabling precise alignment for processes such as exposure, etching, or alignment bonding on the thin film belt, meeting the requirements of normal industrial production.

[0032] According to another aspect of the present invention, the above-described thin film processing system can also be implemented as a thin film processing method. The thin film processing method includes the following steps: a thin film strip is sequentially driven forward via a first active roller and a second active roller, wherein both the first and second active rollers are configured for controllable rotation; a distance value between positioning markers on the thin film strip located between the first and second active rollers is detected; and the rotational speeds of the first and second active rollers are adjusted based on the detected distance value, thereby causing the distance value to converge to a predetermined distance threshold range.

[0033] The thin film processing method further includes: using a tension roller located between the first active roller and the second active roller to detect the tension value of the thin film strip; adjusting the rotation speed of the first active roller and the second active roller based on the tension value detected by the tension roller, thereby causing the tension value to converge to a predetermined tension threshold range.

[0034] For other technical details regarding the thin film processing method, please refer to the relevant description of the thin film processing system 100 above, which will not be repeated here.

[0035] Second embodiment of a thin film processing scheme

[0036] As mentioned in the background section, roll-to-roll film imprinting equipment is generally used for imprinting single-layer structures. For multilayer flexible circuits, including touch modules, traditional methods involve fabrication piece by piece (exposure, etching, alignment, and bonding), resulting in low process efficiency, poor foldability, large-size circuit linewidths of approximately 10 micrometers, and low overall efficiency. In the second embodiment of this invention, the roll-to-roll process can be applied to the fabrication process of thin film strips, including touch modules.

[0037] likeFigure 3 (d) illustrates one 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 312 formed within the first holding layer 313, a second holding layer 325 on the first holding layer 313, and a second conductive layer 330 formed within the second holding layer 325, wherein the base layer 311, the first holding layer 313, and the first conductive layer 312 together constitute an initial film 310. The first holding layer 313 can be formed by adhesive lamination and is therefore also referred to as an adhesive layer. During the formation of the touch film, such as... Figure 3 As shown in (a), an initial thin film 310 can be obtained first, and then as follows Figure 3 As shown in (b), an adhesive layer 325' can be formed by coating an initial thin film 310, followed by... Figure 3 As shown in (c), a groove 326 can be embossed into the adhesive layer 325'. The embossed adhesive layer can also be referred to as the second retaining layer. Finally, as shown in... Figure 3 As shown in (d), a second conductive layer 330 can be filled in the groove 326 to finally obtain a touch film.

[0038] like Figure 4 The formation process of the touch film in another embodiment is illustrated. For example... Figure 4 (a) Figure 4 (b) Figure 4 (c) and Figure 4 As shown in (d), Figure 3 The formation process of the touch film in Figure 4 The formation process of the touch film in the two are basically the same, the difference being: Figure 3 The second retaining layer 325 and the second conductive layer 330 are formed on one side of the first conductive layer 312, and Figure 4 The second retaining layer 325 and the second conductive layer 330 are formed on the other side of the base layer 311, that is, the second retaining layer 325 and the second conductive layer 330 are located on different sides of the base layer 311 from the first retaining layer 313 and the first conductive layer 312.

[0039] In progress Figure 3 (b) and Figure 3 (c) The groove forming step or the following steps are shown in the diagram. Figure 4 (b) and Figure 4(c) During the groove formation step, the alignment of the patterned area on the second conductive layer 330 and the patterned area on the first conductive layer 312 needs to be considered. The pattern of the second conductive layer 330 is determined by the pattern of the groove 326, and the groove formation step can also be referred to as the pattern formation step. However, when performing the pattern formation step on the initial film 310 using a roll-to-roll process, the stretching of the film strip formed by the initial film 310 is crucial, as this directly determines whether the patterned area subsequently formed on the film strip is aligned with the original patterned area (the pattern formed by the first conductive layer 312).

[0040] In addition, although Figure 3 and Figure 4 Two exemplary embodiments of the touch film have been provided, but other embodiments of the touch film will be conceived by those skilled in the art based on the teachings of the present invention. Furthermore, the film strip mentioned herein can be a film strip formed from the initial film 310, or a film strip formed from a film of other structures. The film strip of the present invention can be used to prepare touch films, and can also be used to prepare films for other purposes.

[0041] Figure 5 This is a schematic diagram of the thin film processing system in the second embodiment 400 of the present invention. Figure 5 As shown, the film processing system 400 includes a first active roller 410, a second active roller 420, a tensile detection device 430, a controller 440, a roller group 460, and a tension roller 450. Figure 5 The working mode and function of the first drive roller 410, the second drive roller 420, the tensile detection device 430, the controller 440, the roller group 460, and the tension roller 450 are related to... Figure 1 The working methods and functions of the first drive roller 110, the second drive roller 120, the tension detection device 130, the controller 140, the roller group 160, and the tension roller 150 are basically the same. To avoid repetition, this will not be repeated here; the main focus will be on... Figure 5 Thin film processing system 400 and Figure 1 The difference between the thin film processing system 100 in the middle.

[0042] Figure 5 The film processing system 400 can not only precisely adjust the stretch of the film belt 510 located between the two drive rollers 410 and 420, but also form an imprint layer 520 (also referred to as an imprinted adhesive layer) on the film belt 510, thereby obtaining a film belt 500 with the imprint layer 520 formed. The cross-sectional structure of the film belt 500 output by the film processing system 400 is as follows: Figure 5As shown in (a), an imprint layer 520 is formed on the original film strip 510. Sometimes, the film strip 510 may also be referred to as the pre-processed film strip, and the film strip 500 may also be referred to as the post-processed film strip.

[0043] Combination Figure 5 and Figure 6 As shown, the film strip 510 is driven forward by a first drive roller 410. The film strip 510 entering the first drive roller 410 includes a first pattern that repeats along the length of the film strip, wherein the first pattern includes a first alignment mark. Figure 6 As shown in (a), a top view of the film strip 510 is displayed, showing two first patterns 518. Each first pattern 518 includes first alignment marks 512 located at the four corners, a visible area 513, a border area 514, and a lead area 515. Of course, each first pattern 518 also includes stretch positioning marks 511. It should be noted that... Figure 1 In the first embodiment described, this stretch positioning mark 511 is referred to as a positioning mark. In the second embodiment, to distinguish it from the first alignment mark 512, it is therefore referred to here as stretch positioning mark 511. Of course, Figure 6 (a) This is merely an example. In other examples, there may be three, two, or more first alignment marks 512 for each first pattern 518. The positions of the first alignment marks 512 can also be set as needed, as can the visible area 513, border area 514, and leader area 515 of each first pattern 518. The shape of the first alignment mark 512 is a circle with a cross, but it can also be other shapes. In one embodiment, the film strip 510 may be... Figure 3 and Figure 4 The initial thin film 310 shown is formed into a thin film strip, wherein the pattern formed on the first conductive layer 312 is the first pattern on the first thin film strip 510.

[0044] like Figure 5As shown, the film processing system 400 further includes an adhesive application device 472 and an alignment detection device 490. The adhesive application device 472 is used to form an adhesive layer on the film strip 510 in the direction from the first drive roller 410. In one embodiment, the adhesive application device 472 may include a dispensing head that reciprocates to dispensing adhesive onto the film strip 510. In another embodiment, the adhesive application device 472 may include an anilox roller that rotates to apply adhesive onto the film strip 510. In yet another embodiment, the adhesive application device 472 includes one or more sets of dispensing heads, each set including at least one automatic dispensing head and at least one manual dispensing head, the automatic dispensing head slidably dispensing adhesive automatically onto the film strip 510; the manual dispensing head slidably dispensing adhesive manually onto the film strip 510.

[0045] The second active roller 420 has an imprinting structure on its surface. The roller surface of the second active roller 420 imprints onto the adhesive layer of the film strip 510 to form an imprinted adhesive layer, namely the imprinting layer 520. The imprinting structure can be a micron-scale structure or a nanon-scale structure. The second active roller 420 can also be referred to as a printing roller.

[0046] Combination Figure 5 and Figure 6 The film strip 500, with the embossed layer 520 formed thereon, is driven forward by a second drive roller 420. The embossed layer 520 includes a second pattern repeated along the length of the film strip, wherein the second pattern includes a second alignment mark. Figure 6 As shown in (b), it is a top view of the imprinted layer 520 formed on the film strip 510. Two second patterns 528 are shown. Each second pattern 528 includes second alignment marks 522 located at the four corners, a visible area 523, a border area 524, and a lead area 525. Of course, Figure 6 (b) This is merely an example; each second pattern 528 may have three, two, or more second alignment markers 522, and the positions of the second alignment markers 522 can be set as needed. The visible area 523, border area 524, and leader area 525 of each second pattern 528 can also be set as needed. The shape of the second alignment marker 522 is a dot, but it can also be other shapes. In one embodiment, the embossing layer 520 may be... Figure 3 and Figure 4 The second retaining layer 325, which is formed on the initial film 310, is the adhesive layer after embossing. The pattern formed on the second retaining layer 325 is the second pattern 528 on the embossing layer 520.

[0047] The alignment detection device 490 is used to detect the alignment deviation between the first alignment mark of the first pattern and the second alignment mark of the second pattern on the film strip 510 transmitted from the second drive roller 420. For example... Figure 6 As shown in (c), the first alignment mark 512 of the first pattern 518a and the second alignment mark 522 of the second pattern 528a are basically perfectly aligned, and the alignment deviation is 0. Figure 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 is D2. The alignment detection device 490 may include a photoelectric sensor that can identify the first alignment mark of the first pattern and the second alignment mark of the second pattern, and thereby determine the alignment deviation between the alignment marks. In another embodiment, the alignment detection device 490 may include an image acquisition device that can take pictures of the first and second patterns, identify the first alignment mark of the first pattern and the second alignment mark of the second pattern based on the captured images, and thereby determine the alignment deviation between the alignment marks.

[0048] The controller 440 is also electrically connected to the alignment detection device 490 and receives the detection signal from the alignment detection device 490. The controller 440 can adjust the rotational speeds of the first active roller 410 and the second active roller 420 based on the alignment deviation obtained by the alignment detection device 490, thereby causing the alignment deviation to converge to a predetermined deviation threshold range. In specific implementation, the alignment detection device 490 continuously detects the alignment deviation of each corresponding first pattern and second pattern. When the current alignment deviation detected by the alignment detection device 490 exceeds the predetermined deviation threshold range, the controller 440 adjusts the rotational speeds of the first active roller 410 and the second active roller 420, thereby adjusting the stretching degree of the film strip 510 between the first active roller 410 and the second active roller 420, so that the subsequently detected alignment deviation is closer to the predetermined deviation threshold range. Through one or more adjustments, the alignment deviation is made to converge to the predetermined deviation threshold range. For example, the predetermined deviation threshold range can be ±0.01mm, so that the second pattern in the imprint layer 520 and the first pattern in the film strip 510 can be aligned very precisely.

[0049] like Figure 6As shown, the first alignment identifier of the first pattern includes multiple, such as four, and the second alignment identifier of the second pattern includes multiple, such as four, with the multiple first alignment identifiers and multiple second alignment identifiers corresponding to each other. The alignment detection device 490 detects multiple alignment deviations of the multiple corresponding first alignment identifiers and second alignment identifiers for a set of corresponding first and second patterns. The controller 440 adjusts the rotation speed of the first drive roller 410 and the second drive roller 420, so that each alignment deviation detected for each set of corresponding first and second patterns converges to a predetermined deviation threshold range.

[0050] like Figure 6 As shown in (c), in the final thin film strip 500, the first pattern 518 and the second pattern 528 are aligned with each other to form a continuous thin film product unit. The cross-sectional view of each thin film product unit can be referred to... Figure 3 (c) and Figure 4 As shown in (c). Then, as... Figure 3 As shown in (d) and 4(d), a touch film unit is formed by filling a conductive layer onto the film product unit, and finally the touch film unit is cut off from the film strip.

[0051] In the second embodiment, the controller 140 may have three feedback signals: the alignment deviation of the first and second patterns obtained by the alignment detection device 490, the distance value between the tension positioning marks detected by the tension detection device 430, and the tension value detected by the tension roller 450. The controller 140 combines these three feedback signals to adjust and control the rotational speed of the first and second active rollers, thereby causing the three feedback signals to converge within a predetermined distance threshold range, a predetermined tension threshold range, and a predetermined deviation threshold range, respectively. The controller 140 can control the priority of each feedback signal during the control process as needed, as long as the final goal can be achieved, that is, to control the convergence of the detected alignment deviation to a predetermined deviation threshold range, the detection distance value to a predetermined distance threshold range, and the detection tension value to a predetermined tension threshold range.

[0052] For example, during the process of the controller 140 adjusting the rotational speeds of the first and second drive rollers, the priority of converging the detected alignment deviation within a predetermined deviation threshold range can be higher than the priority of converging the detected distance value within a predetermined distance threshold range. In other words, in order to make the alignment deviation converge within the predetermined deviation threshold range, at certain times, 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, ultimately, it is still necessary to adjust the detected distance value to converge within the predetermined distance threshold range.

[0053] like Figure 6 As shown in (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). The stretch of the film belt 510 can be reduced by adjusting the rotational speeds of the first and second drive rollers. Since the length of the second pattern 528 is equal to the circumference of the second drive roller 420, the length of the second pattern 528 remains constant, while the length of the first pattern 518 shortens. After a period of matching, such as after one or more overlaps and alignments of the first pattern 518 and the second pattern 528, the first alignment mark 512 of the first pattern will catch up with the second alignment mark 522 of the second pattern and finally align. With this control method, the initial few film product units on the film belt 500 will not meet the vertical alignment requirements. As the control is completed, the film product units on the film belt 500 will meet the vertical alignment requirements.

[0054] like Figure 5 As shown, the film processing system 400 may further include: a pressure roller 474 disposed after the adhesive applicator 472 and adjacent to the second drive roller 420; a peeling roller 480 disposed after the second drive roller 420 and adjacent to the second drive roller 420; and a curing device 476. The film strip forming the adhesive layer is conveyed to the second drive roller 420 via the pressure roller 474, passing through the gap between the second drive roller 420 and the pressure roller 474. The film strip is then conveyed to the peeling roller 480 via the gap between the second drive roller 420 and the peeling roller 480. The curing device 476 is used to cure the adhesive layer imprinted on the film strip by the second drive roller 420. The peeling roller 480 is used to peel the imprinted adhesive layer off the second drive roller 420, and the pressure roller 474 is used to compress the adhesive layer to make it more uniform. The curing device 476 can be a thermal curing device or a light curing device, such as a curing lamp, which can be a mercury lamp or an LED lamp.

[0055] It should be noted that various modifications can be made to the second embodiment of the present invention without departing from the basic concept of the second embodiment. In one modified embodiment, the tension roller 450 and / or the tension detection device 430 may not be provided in the film processing system 400. In this case, the controller 440 can adjust the first active roller 410 and the second active roller 420 based solely on the positioning deviation detected by the alignment detection device 490, thus achieving the effect of the positioning deviation converging within a predetermined deviation threshold range. In another modified embodiment, the first active roller 410 is configured such that the film strip entering the first active roller 410 and the film strip exiting the first active roller 410 form an obtuse angle, which facilitates adjustment. In yet another modified embodiment, the roller group 460 may not be provided depending on the application requirements. In yet another modified embodiment, the pressure roller 474, the peeling roller 480, and the curing device 476 may not be provided depending on the application requirements, or the positions of the pressure roller 474, the peeling roller 480, and the curing device 476 may be changed depending on the application requirements.

[0056] like Figure 7 As shown, in one embodiment, the film processing system 400 may further include a feeding assembly 710 for conveying the film belt to a first drive roller 410. The feeding assembly 710 includes: a feeding roller 711, a receiving roller 712, a dust-adhesive device 713, and a feeding tension roller 714.

[0057] The feeding roller 711 is used to place the first composite film strip 550, which includes a film strip 510 and a first protective film 560 attached to the film strip. The receiving roller 712 is used to receive the first protective film 560 separated from the first composite film strip 550. The dust-adhesive device 713 is used to perform dust-adhesive treatment on the film strip 510 after it has been separated from the first protective film strip. Figure 7 The dust-adhesion device 713 can perform double-sided adhesive treatment on the film strip 510. The film strip 510 passes sequentially through the dust-adhesion device 713 and the feeding tension roller 714. The feeding tension roller is used to control the unwinding tension.

[0058] The position of the take-up roller 712 can also be adjusted. Preferably, the take-up roller 712 can be placed before the adhesive applicator 472 and after the component that last contacts the first protective film side of the first composite film belt 550. For example... Figure 5 As shown, the take-up roller 712 can be placed in a position adjacent to the front of the tension roller 450.

[0059] Of course, the feeding assembly 710 may also include other components, such as a web-aligning sensor and a web-aligning device. The web-aligning sensor is used to detect whether the film strip is offset. If the web-aligning sensor detects an offset, it controls the web-aligning device to perform web-aligning and adjust the offset perpendicular to the conveying direction of the film strip.

[0060] like Figure 8 As shown, the film processing system 400 may further include a receiving assembly 810 for receiving the film strip 500 from the second drive roller 420. The receiving assembly 810 may include a protective film roller 811, a laminating device 812, and a receiving roller 813. The protective film roller 811 provides a second protective film. The laminating device 812 laminates the second protective film with the film strip 500 from the second drive roller to form a second composite film strip. The receiving roller 813 recovers the second composite film strip.

[0061] The take-up assembly 810 may further include a secondary curing device and a take-up tension roller. The secondary curing device is used to re-cure the adhesive layer embossed on the film strip before laminating the film strip 500 with the second protective film. The take-up tension roller is used to control the winding tension.

[0062] According to another aspect of a second embodiment of the present invention, the present invention also provides a film processing method, comprising: conveying a film strip forward via a first drive roller, wherein the film strip entering the first drive roller includes a first pattern repeatedly arranged along the length direction of the film strip, the first pattern including a first alignment mark; an adhesive application device forming an adhesive layer on the film strip from the direction of the first drive roller; conveying the film strip after the adhesive layer is formed forward via a second drive roller, the second drive roller having an imprinting structure provided on its roller surface, the roller surface of the second drive roller imprinting on the adhesive layer of the film strip to form a second pattern repeatedly arranged on the adhesive layer of the film strip, wherein the second pattern includes a second alignment mark; an alignment detection device detecting the alignment deviation between the first alignment mark of the first pattern and the second alignment mark of the second pattern on the film strip exiting from the second drive roller; and a controller adjusting the rotational speeds of the first drive roller and the second drive roller based on the alignment deviation obtained by the alignment detection device, thereby causing the alignment deviation to converge to a predetermined deviation threshold range.

[0063] For other technical details regarding the thin film processing method, please refer to the relevant description of the thin film processing system 400 above, which will not be repeated here.

[0064] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0065] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0066] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thin film processing system, characterized in that, It includes: A first drive roller is configured to rotate in a controlled manner, and the film strip is driven forward via the first drive roller; the film strip includes a first pattern that is repeated along the length of the film strip, wherein the first pattern includes a first alignment mark. A second drive roller, configured for controlled rotation, drives the film strip from the direction of the first drive roller forward; an adhesive applicator for forming an adhesive layer on the film strip from the direction of the first drive roller; the second drive roller has an embossing structure on its surface, and the surface of the second drive roller embosses the adhesive layer of the film strip to form an embossed adhesive layer, the embossed layer including a second pattern repeated along the length of the film strip, wherein the second pattern includes a second alignment mark; A tensile testing device configured to detect the distance between positioning marks on a film strip located between a first drive roller and a second drive roller; A curing device for curing the adhesive layer printed on the film strip by the second active roller; The controller is configured to adjust the rotational speed of the first and second active rollers based on the distance value detected by the stretching detection device, thereby causing the distance value to converge to a predetermined distance threshold range. When the detected distance value is greater 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 transmitted from the first active roller is greater than the speed of the film strip transmitted from the second active 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 transmitted from the first active roller is less than the speed of the film strip transmitted from the second active roller. Alignment detection device, the alignment detection device being 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 strip delivered from the second drive roller; The controller adjusts the rotational speed of the first and second active rollers so that each alignment deviation detected by the corresponding first and second patterns converges to a predetermined deviation threshold range. The priority of the detected alignment deviation converging within a predetermined deviation threshold range is higher than the priority of the detected distance value converging within a predetermined distance threshold range.

2. The thin film processing system according to claim 1, characterized in that, It also includes: A tension roller located between the first and second drive rollers on the conveying path of the film belt is configured to detect the tension value of the film belt. The controller is also configured to adjust the rotational speed of the first and second active rollers based on the tension value detected by the tension roller, thereby causing the tension value to converge to a predetermined tension threshold range.

3. The thin film processing system according to claim 1, characterized in that, The film strip includes a first pattern that is repeatedly arranged along the length of the film strip. Each first pattern is provided with a positioning mark. The tensile testing device detects the distance between two positioning marks on two adjacent first patterns on the film strip.

4. The thin film processing system according to claim 1, characterized in that, It also includes: A roller group located between a first drive roller and a second drive roller on the conveying path of the film belt, comprising one or more guide rollers, wherein the film belt passing through one or more guide rollers forms one or more V-shapes.

5. The thin film processing system according to claim 1, characterized in that, The length of the film strip between the first and second drive rollers is related to the elastic modulus of the film strip, the film tension, the film cross-sectional area, and the required amount of adjustment deformation.

6. The thin film processing system according to claim 2, characterized in that, When the detected tension value exceeds the predetermined tension threshold range, the controller adjusts the rotational speed of the first and second drive rollers so that the speed of the film strip transmitted from the first drive roller is greater than the speed of the film strip transmitted from the second drive roller. When the detected tension value is less than the predetermined tension 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 transmitted from the first active roller is less than the speed of the film strip transmitted from the second active roller.

7. A thin film processing method, characterized in that, The thin film processing system according to any one of claims 1-6 is characterized by: The film belt is driven forward sequentially via a first drive roller and a second drive roller, both of which are configured to rotate in a controlled manner. Detect the distance between the positioning marks on the film strip located between the first and second drive rollers; and The rotational speeds of the first and second active rollers are adjusted based on the detected distance values, thereby causing the distance values ​​to converge to a predetermined distance threshold range.

8. The thin film processing method according to claim 7, characterized in that, It also includes: The tension value of the film strip is detected using a tension roller located between the first and second drive rollers; The rotational speeds of the first and second active rollers are adjusted based on the tension value detected by the tension roller, thereby causing the tension value to converge to a predetermined tension threshold range.

9. The thin film processing method according to claim 7, characterized in that, A roller group is provided between the first and second drive rollers. The roller group includes one or more guide rollers, and the film belt passing through the multiple guide rollers forms one or more V-shapes. The film strip includes a first pattern that is repeatedly arranged along the length of the film strip. Each first pattern is provided with a positioning mark. The tensile testing device detects the distance between two positioning marks on two adjacent first patterns on the film strip.

10. The thin film processing method according to claim 7, characterized in that, Adjusting the rotational speeds of the first and second drive rollers based on the detected distance values, thereby causing the distance values ​​to converge to a predetermined distance threshold range, includes: When the detected distance value is greater than the predetermined distance threshold range, the rotational speeds of the first and second active rollers are adjusted so that the speed of the film strip transmitted from the first active roller is greater than the speed of the film strip transmitted from the second active roller. When the detected distance value is less than the predetermined distance threshold range, the rotation speed of the first active roller and the second active roller is adjusted so that the speed of the film strip transmitted from the first active roller is less than the speed of the film strip transmitted from the second active roller.

11. The thin film processing method according to claim 8, characterized in that, Adjusting the rotational speeds of the first and second active rollers based on the tension value detected by the tension roller, thereby causing the tension value to converge to a predetermined tension threshold range, includes: When the detected tension value exceeds the predetermined tension threshold range, the controller adjusts the rotational speed of the first and second drive rollers so that the speed of the film strip transmitted from the first drive roller is greater than the speed of the film strip transmitted from the second drive roller. When the detected tension value is less than the predetermined tension 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 transmitted from the first active roller is less than the speed of the film strip transmitted from the second active roller.

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