Acf film attaching device with improved alignment accuracy

Abstract

The present application relates to an ACF film attaching device with improved alignment accuracy. In more detail, it comprises a frame, a cutting section provided at the front part of the frame to cut an ACF film, a material feeding guide rail section provided at the front part of the frame to move a material, an attaching section provided at the front part of the frame in a manner that it can be lifted and lowered to attach the ACF film cut by the cutting section to the material moved by the material feeding guide rail section, a bottom vision camera located at the lower part of the frame to acquire and transmit an ACF film shot image of the ACF film cut by the cutting section, and a control section to judge the position and alignment state of the material through the ACF film shot image of the ACF film transmitted from the bottom vision camera and to control the operations of the cutting section, the material feeding guide rail section, the attaching section and the bottom vision camera in synchronization.

Description

Technical Field

[0001] This invention relates to an ACF film bonding device with improved alignment accuracy.

[0002] More specifically, the invention relates to an ACF film attachment apparatus with improved alignment accuracy, which uses a bottom vision camera to acquire images of the ACF film cut by a cutting section to determine the position and alignment status of the ACF film relative to the material, thereby improving the alignment accuracy of the ACF film relative to the material. Background Technology

[0003] A typical camera module is a component that uses an image sensor to convert light signals incident through a lens into RGB electrical signals, which are then displayed on the screen of digital imaging devices such as mobile phones and monitors. In other words, as an essential component in mobile devices such as smartphones for taking and storing photos, it can drive digital devices by recognizing facial expressions and gestures, and its applications are expanding to input devices.

[0004] On the other hand, ACF (Anisotropic Conductive Film) films are used as key materials for achieving electrical and mechanical connections in various electronic devices such as display panels, semiconductors, and electronic circuit boards.

[0005] The ACF film has anisotropic conductivity characteristics that provide electrical connection between connected components while maintaining electrical insulation properties in unconnected portions.

[0006] The application of this ACF film to displays or circuits requires a high degree of precision and stability. However, the following problems exist: alignment errors between the ACF film and the module (panel, substrate, etc.) can lead to a decrease in adhesion quality, and defects may occur due to the inability to check the alignment status in real time during the adhesion process or low inspection speed and accuracy.

[0007] Furthermore, during the ACF film application process, uneven pressure or temperature may cause uniformity issues during the pressing process. Also, due to the complexity of the application equipment setup and calibration process, the results may deviate significantly depending on the operator's skill level.

[0008] As one of the related technologies, Korean Patent Publication No. 10-2229686 discloses a camera module attachment system with improved alignment reliability and a camera module attachment method using the same.

[0009] The prior art camera module mounting system and camera module mounting method with improved alignment reliability include: a module transfer unit that transfers a first tray containing multiple modules along a certain travel direction; an FPCB input unit that inputs a second tray containing multiple FPCB substrates; an FPCB discharge unit that discharges the empty second tray after the FPCBs have been inserted into the system; an FPCB transfer unit that transfers the second tray at a position that does not intersect with the module transfer unit; an ACF attachment unit that attaches an ACF film to the module contained in the first tray; an FPCB attachment unit that picks up an FPCB from the second tray and attaches the FPCB to the upper side of the ACF film bonded to the module; a thermosetting unit that applies heat to the ACF film between the module and the FPCB to harden it; and a control unit that controls the multiple components.

[0010] However, the prior art only includes an ACF attachment part and a thermosetting part for attaching the ACF film to the module, and does not include a structure for improving the alignment accuracy and attachment accuracy of the ACF film relative to the module.

[0011] [Existing Technical Documents] [Patent Documents] (Patent Document 1) Korean Patent Publication No. 10-2229686 (March 12, 2021) (Patent Document 2) Korean Patent Publication No. 10-0454583 (October 18, 2004) Summary of the Invention Technical problems to be solved This invention is proposed to solve the above-mentioned problems, and its purpose is to provide an ACF film attaching device with improved alignment accuracy. It uses a bottom vision camera to acquire an image of the ACF film cut by the cutting part, and determines the position and alignment status of the ACF film relative to the material, thereby improving the alignment accuracy of the ACF film relative to the material.

[0012] Solution to the problem To address the aforementioned problems, the ACF film attaching apparatus according to the present invention, characterized by improved alignment accuracy, comprises: a frame; a cutting section disposed on the front surface of the frame for cutting an ACF film (Anisotropic Conductive Film); a bottom vision camera located at the lower part of the frame for acquiring and transmitting images of the ACF film cut by the cutting section; a feeding guide section located on the front surface of the frame for conveying material; an attaching section disposed on the front surface of the frame in a liftable manner for attaching the ACF film cut by the cutting section to the material conveyed by the feeding guide section; and a control section that determines the position and alignment state of the ACF film to be attached by the attaching section based on the ACF film images transmitted from the bottom vision camera, and synchronously controls the operation of the cutting section, the feeding guide section, the attaching section, and the bottom vision camera.

[0013] Furthermore, the device is characterized by including: a top vision camera, which acquires and transmits material images of the material being transferred by the feeding guide section; and a control unit, by comparing the material images transmitted from the top vision camera with the ACF film images transmitted from the bottom vision camera, determines the position and alignment of the material with the ACF film.

[0014] Furthermore, the frame is characterized by including: an ACF roll section on which the ACF film is wound, and a cutting section cutting the ACF film wound from the ACF roll section.

[0015] Furthermore, the attachment portion is characterized by including a parallelism correction unit, which corrects the position and parallelism of the attachment portion.

[0016] Furthermore, the attachment part is characterized in that the pressure is controlled based on a servo motor, a ball screw, a cylinder, and a force sensor, thereby attaching the ACF film to the material.

[0017] Furthermore, the attachment portion is characterized in that the ACF film is attached to the material with a pressure of 10N to 150N.

[0018] Furthermore, the ACF film attaching device of the present invention with improved alignment accuracy is characterized by comprising: an axis adjustment part disposed at the lower part of the frame, wherein the position of the ACF film to be attached by the attachment part is corrected by sliding the frame in the front-back direction.

[0019] Furthermore, the ACF film attaching device of the present invention with improved alignment accuracy is characterized by including: an θ adjustment unit disposed at the lower part of the frame, which corrects the angle of the ACF film to be attached by the attaching unit by rotating the frame by a predetermined angle.

[0020] Furthermore, the bottom vision camera is characterized by using light source calibration that automatically corrects the light source brightness and focus state to acquire ACF film images of the ACF film.

[0021] Furthermore, the bottom vision camera is characterized by selectively using either a macro lens or a telecentric lens to acquire ACF film images of the ACF film.

[0022] Furthermore, the bottom vision camera is characterized by using a ring light, a coaxial light, and a bar light as light sources, and automatically adjusting the light sources according to the reflectivity and surface condition of the ACF film.

[0023] Furthermore, the feeding guide section is characterized in that it adsorbs the material by vacuum adsorption, thereby preventing the material from shifting.

[0024] Furthermore, the control unit is characterized in that when it is determined, based on an image of the ACF film captured by the bottom vision camera, that the alignment error of the ACF film exceeds a preset allowable range, it outputs a warning signal.

[0025] Furthermore, the bottom vision camera is characterized in that it can slide along the length direction of the feeding guide section under the control of the control unit.

[0026] The effects of the invention The ACF film attaching apparatus of the present invention improves the alignment accuracy by using a bottom vision camera to acquire an image of the ACF film cut by the cutting part, and determining the position and alignment state of the ACF film relative to the material, thereby improving the alignment accuracy of the ACF film relative to the material. Attached Figure Description

[0027] Figure 1 This is a perspective view showing an ACF film attaching device with improved alignment accuracy according to the present invention.

[0028] Figure 2 This is a front view showing an ACF film attaching apparatus with improved alignment accuracy according to the present invention.

[0029] Figure 3 This is a diagram showing the control section of an ACF film attaching device with improved alignment accuracy according to the present invention.

[0030] Figure 4a and Figure 4b This is a diagram showing the θ adjustment section and the shaft adjustment section of the ACF film bonding device according to the present invention, which improves the alignment accuracy.

[0031] Figure 5 This is a diagram showing the feed guide section of the ACF film bonding apparatus according to the present invention, which improves the alignment accuracy.

[0032] Figure 6 This is a diagram showing the attachment portion of the ACF film attachment apparatus according to the present invention, which improves alignment accuracy.

[0033] (Explanation of reference numerals in the attached image) 10: ACF film; 100: frame 101: θ frame; 102: Axis frame 110: ACF roll section; 200: Cutting section 300: Feeding guide section; 310: Bearing component 320: Vacuum bath; 400: Attachment section 410: Parallelism correction unit; 420: Servo motor 430: Cylinder; 440: Force sensor 450: Heating component 500: Bottom vision camera; 600: Control unit 700: Top vision camera; 800: Theta adjustment unit 810: θ movement unit; 900: shaft adjustment unit Detailed Implementation This invention is capable of various modifications and has multiple embodiments, which will be illustrated and described in detail in the accompanying drawings. However, this is not intended to limit the invention to specific implementations, and should be understood to include all modifications, equivalents, and even substitutions that fall within the scope of the ideas and techniques of this invention.

[0034] When it is mentioned that a constituent element is "connected" or "linked" to another constituent element, it should be understood that it may be directly connected or linked to another constituent element, but there may also be another constituent element in between.

[0035] Conversely, when it is mentioned that a constituent element is "directly connected" or "directly linked" to another constituent element, it should be understood that there is no other constituent element in between.

[0036] The terminology used in this specification is for illustrative purposes only and is not intended to limit the invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. In this application, terms such as "comprising" or "having" should be understood as specifying the presence of features, numbers, processes, actions, constituent elements, components, or combinations thereof described in the specification, and do not presuppose the presence or additional possibilities of one or more other features or numbers, processes, actions, constituent elements, components, or combinations thereof.

[0037] Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms commonly used, such as those defined in dictionaries, shall be interpreted as having a meaning consistent with their meaning in the relevant technical context and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0038] The invention will now be described in more detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be interpreted in their ordinary or dictionary-like meanings. Based on the principle that the inventors can appropriately define the concepts of terms in order to best explain their invention, they must be interpreted as meanings and concepts consistent with the technical concept of the invention. Furthermore, unless otherwise defined, the technical and scientific terms used have meanings commonly understood by one of ordinary skill in the art to which this invention pertains. In the following description and drawings, descriptions of well-known functions and structures that may unnecessarily obscure the spirit of the invention are omitted. The accompanying drawings are provided as examples to fully convey the idea of ​​the invention to those skilled in the art. Therefore, the invention is not limited to the drawings presented below and may be embodied in other forms. Furthermore, throughout the specification, the same reference numerals denote the same constituent elements. It should be noted that the same constituent elements are represented by the same symbols wherever possible in the drawings.

[0039] This invention relates to an ACF film attaching device with improved alignment accuracy. It uses a bottom vision camera to acquire images of the ACF film cut by a cutting part, and determines the position and alignment status of the ACF film relative to the material, thereby improving the alignment accuracy of the ACF film relative to the material.

[0040] Hereinafter, the ACF film attaching apparatus according to the present invention with improved alignment accuracy will be described in detail with reference to the accompanying drawings.

[0041] Figure 1 This is a diagram illustrating an ACF film attaching device with improved alignment accuracy according to the present invention.

[0042] According to the attached Figure 1The ACF film attaching device with improved alignment accuracy of the present invention includes: a frame 100, a cutting part 200, a bottom vision camera 500, a feeding guide part 300, an attaching part 400, and a control part 600.

[0043] The ACF film attaching apparatus for improving alignment accuracy according to the present invention is configured to cut and attach an ACF film 10 to a material conveyed by the feeding guide section 300, and to determine the position and alignment state of the ACF film 10 by acquiring an ACF film image of the ACF film 10 cut by the cutting section 200, thereby improving the alignment accuracy of the material and the ACF film 10.

[0044] The frame 100 serves as the basic skeleton of the ACF film attaching device with improved alignment accuracy according to the present invention. It is formed in a shape perpendicular to the ground and is used to set the cutting part 200, the feeding guide part 300 and the attaching part 400, etc., and to enable them to be positioned as required.

[0045] At this time, the ACF film attaching device with improved alignment accuracy of the present invention may include: a shaft frame 102, which is located at the lower part of the frame 100 and is provided with a shaft adjustment part 900 described later; and a θ frame 101, which is located at the lower part of the frame 100 and is provided with a θ adjustment part 800 described later.

[0046] The cutting section 200 is disposed on the front surface of the frame 100 to cut the ACF film (Anisotropic Conductive Film) 10.

[0047] The cutting section 200 cuts the ACF film 10 rolled out from the ACF roll section 110 (described later) into a predetermined size, so that the cut ACF film 10 can be attached to the material by the attachment section 400 (described later).

[0048] Furthermore, an ACF roll section 110 may be provided on the frame 100 to wind the ACF film 10. The ACF roll section 110 may be driven according to the control of the control unit 600 described later, thereby winding out the wound ACF film 10.

[0049] That is, the cutting section 200 can be driven according to the control of the control section 600, thereby linking with the ACF roll section 110, and cutting the ACF film 10 rolled out by the drive of the ACF roll section 110 into a predetermined size.

[0050] The bottom vision camera 500 is located at the lower part of the frame 100 to capture and transmit images of the ACF film 10 cut by the cutting part 200.

[0051] At this time, the bottom vision camera 500 can be optionally set on either the θ frame 101 or the shaft frame 102. Preferably, it can be set on the shaft frame 102 so as to acquire ACF film images of the ACF film 10 at a fixed position.

[0052] The bottom vision camera 500 can have a lens resolution in the range of 2μm to 10μm, depending on the size of the ACF film 10 and the required accuracy, and can be selected according to the control of the control unit 600 described later.

[0053] In addition, the bottom vision camera 500 can maintain an ACF film image acquisition speed of 40-60fps or higher per working time, thereby improving the working speed.

[0054] In addition, the bottom vision camera 500 can apply light source calibration to automatically correct the light source brightness and focus state in order to obtain ACF film images of the ACF film 10.

[0055] At this time, the light calibration function, which automatically corrects the brightness and focus of the light source, enables the bottom vision camera 500 to maintain optimal shooting conditions when acquiring ACF film images of the ACF film 10.

[0056] More specifically, the bottom vision camera 500 can be configured to apply the light source calibration, thereby automatically adjusting the light source brightness according to the surface condition (reflectivity, color, transparency, etc.) of the ACF film 10, and checking the distance between the lens of the bottom vision camera 500 and the ACF film 10 and the focal position in real time to correct for distortion, and driving it by comparing it with the reference values ​​(brightness, focus, etc.) preset by the control unit 600.

[0057] In addition, the bottom vision camera 500 can selectively use either a macro lens or a telecentric lens to acquire images of the ACF film 10.

[0058] At this time, the macro lens is an optimized lens for close-up shooting, which can clearly capture the detailed surface pattern or features of the ACF film 10, thereby enabling it to detect minute defects in the ACF film 10 or confirm alignment accuracy.

[0059] Furthermore, the telecentric lens is an optimized lens that minimizes image distortion even when the distance to the ACF film 10 changes. It primarily produces optical parallelism, which can be used to accurately measure the overall size and shape of the ACF film 10 or to confirm the alignment status.

[0060] The telecentric lens can also be used when it is necessary to measure the accurate size of the ACF film 10 and to capture images uniformly.

[0061] In addition, the bottom vision camera 500 uses a ring light, a coaxial light, and a bar light as light sources, and can automatically adjust the light source according to the reflectivity and surface condition of the ACF film 10.

[0062] At this time, the ring light source is a ring-shaped illumination disposed around the lens of the bottom vision camera 500, which can be used to uniformly illuminate the ACF film 10. The coaxial light source is an illumination located on the same axis as the bottom vision camera 500, which can be used to send reflected light to the bottom vision camera 500 to capture high-resolution images. The strip light source is a rectangular illumination that can be used to illuminate light from a specific direction to emphasize the texture or depth of the surface of the ACF film 10.

[0063] That is, the ring light source is advantageous when photographing ACF films 10 with low reflectivity or uneven surfaces, the coaxial light source is advantageous when inspecting ACF films 10 with high reflectivity or fine surface patterns, and the strip light source is advantageous when inspecting the surface roughness or fine cracks of ACF films 10.

[0064] More specifically, the bottom vision camera 500 can be controlled by the control unit 600 described later, thereby analyzing the characteristics of the ACF film 10 to select a light source suitable for the shooting conditions. As needed, any one or more of the ring light, coaxial light, and bar light can be used, and the light source can be corrected even if the characteristics of the ACF film 10 change during the shooting process by the bottom vision camera 500.

[0065] Furthermore, the bottom vision camera 500 can slide along the length direction of the feeding guide section 300 under the control of the control unit 600.

[0066] That is, the bottom vision camera 500 can be slid under the control of the control unit 600 and can be slid in conjunction with the feeding guide 300 to a position corresponding to the position of the material transferred by the feeding guide 300.

[0067] At this time, the control unit 600 can correct the position of the bottom vision camera 500 by capturing images of the ACF film obtained by the bottom vision camera 500.

[0068] The feeding guide section 300 is located at the front of the frame 100 and transfers materials.

[0069] Although the present invention describes the material being transferred by the feeding guide section 300, depending on the implementation environment, the feeding guide section 300 of the present invention may be configured to transfer a tray on which one or more materials are placed, in order to prevent damage to the materials transferred by the feeding guide section 300.

[0070] The feeding guide section 300 can transfer the material from one side of the frame 100 to the other side, and transfer the material according to the control of the control section 600. During the application of the ACF film 10, the material can be linked in a hold-then-drive manner according to the control of the control section 600.

[0071] In addition, the feeding guide section 300 can adsorb the material by vacuum adsorption, thereby preventing the material from moving.

[0072] The vacuum adsorption method of the feeding guide section 300 is designed to improve the fixing force on the material transferred by the feeding guide section 300, and the vacuum adsorption method of the feeding guide section 300 can be arbitrarily changed and applied according to the implementation environment.

[0073] At this time, the vacuum adsorption method applied to the feeding guide section 300 can be driven by generating a vacuum through a plurality of vacuum grooves 320 formed on the bearing member 310 that moves along the feeding guide section 300.

[0074] Furthermore, the feeding guide section 300 may be equipped with a cylinder to lift and lower the material transferred by the feeding guide section 300, and may be equipped with a ball bearing guide to guide the lifting and lowering of the material.

[0075] In addition, the feeding guide section 300 may include a management unit 330 for protecting the cables required to drive the feeding guide section 300, thereby preventing errors caused by cable interference and contamination during the material transfer process by the feeding guide section 300, and improving stability.

[0076] The attachment part 400 is provided on the front part of the frame 100 in a liftable manner, so as to attach the ACF film 10 cut by the cutting part 200 to the material transferred by the feeding guide part 300.

[0077] The attachment portion 400 can attach the ACF film 10 to the material with a pressure of 10N to 150N.

[0078] In addition, the attachment part 400 may include a servo motor 420, a ball screw, a cylinder 430 and a force sensor 440, thereby attaching the ACF film 10 to the material.

[0079] At this time, the servo motor 420 can perform accurate position control and force adjustment during pressing, the ball screw and cylinder 430 can uniformly transmit the pressure used when pressing the ACF film 10 onto the material, and the force sensor 440 can measure and control the force applied during the pressing process.

[0080] In addition, the attachment portion 400 may include a heating component 450, which generates and transmits the temperature required for the ACF film 10 to be attached, thereby improving the adhesion of the attachment portion 400.

[0081] Accordingly, the attachment portion 400 can be precisely driven so that the ACF film 10 can be attached to the accurate position of the material, and a certain pressure and temperature can be provided to maintain the attachment quality of the attachment portion 400.

[0082] In addition, the attachment part 400 may include a parallelism correction unit 410, which corrects the position and parallelism of the attachment part 400.

[0083] The parallelism correction unit 410 prevents the attachment head from tilting or uneven pressure from occurring during the attachment process, thereby enabling a uniform attachment process.

[0084] The parallelism correction unit 410 can be driven by the control unit 600 (described later) or manually driven by the operator, thereby correcting the position and parallelism of the attachment part 400 by controlling the position and angle of the attachment head.

[0085] At this time, the parallelism correction unit 410 can be driven by a micrometer-based precision adjustment mechanism, thereby enabling fine adjustments in μm units.

[0086] The control unit 600 determines the position and alignment of the ACF film 10 to be attached by the attachment unit 400 by capturing an image of the ACF film 10 transmitted from the bottom vision camera 500, and synchronously controls the operation of the cutting unit 200, the feeding guide unit 300, the attachment unit 400 and the bottom vision camera 500.

[0087] At this time, the control unit 600 may output a warning signal when it determines that the alignment error exceeds a preset allowable range based on the ACF film image captured by the bottom vision camera 500.

[0088] On the other hand, the ACF film attaching device with improved alignment accuracy of the present invention may include: a top vision camera 700, which acquires and transmits material images of the material being transferred by the feeding guide 300; and a control unit 600 determines the position and alignment status of the material with the ACF film 10 by comparing the material images transmitted from the top vision camera 700 with the ACF film images transmitted from the bottom vision camera 500.

[0089] That is, the control unit 600 compares the ACF film image transmitted from the bottom vision camera 500 with the material image transmitted from the top vision camera 700 to determine the position and alignment status of the material with the ACF film 10, thereby more accurately determining the alignment status of the material with the ACF film 10 and improving the alignment accuracy.

[0090] Furthermore, the control unit 600 can adjust the light source settings of the bottom vision camera 500 and the top vision camera 700 in real time according to environmental conditions (temperature and humidity, etc.), thereby optimizing the ACF film imaging acquisition environment of the bottom vision camera 500 and the material imaging image acquisition environment of the top vision camera 700.

[0091] Furthermore, the ACF film attaching device with improved alignment accuracy of the present invention may include: an axis adjustment part 900, which is disposed at the lower part of the frame 100, and corrects the position of the ACF film 10 to be attached by the attaching part 400 by sliding the frame 100 in the front-back direction.

[0092] At this time, the axis adjustment part 900 can be set at the lower part of the θ frame 101 described later, so that the θ frame 101 slides along the Y-axis direction, thereby causing the frame 100 set on the θ frame 101 to slide along the Y-axis direction, and correcting the alignment of the material transferred by the feeding guide part 300 with the position of the attachment part 400.

[0093] The axis adjustment unit 900 is controlled by the control unit 600, and the control unit 600 confirms whether the attachment part 400 is aligned to the target alignment state based on the ACF film image captured by the bottom vision camera 500, thereby controlling the axis adjustment unit 900 and correcting the position alignment of the attachment part 400 relative to the material.

[0094] Furthermore, the ACF film attaching device with improved alignment accuracy of the present invention may include: an θ adjustment unit 800, which is disposed at the lower part of the frame 100, and corrects the angle of the ACF film 10 to be attached by the attaching unit 400 by rotating the frame 100 by a predetermined angle.

[0095] At this time, the θ adjustment part 800 can be disposed on the θ frame 101 to rotate the frame 100.

[0096] The θ adjustment unit 800 is controlled by the control unit 600, and the control unit 600 confirms whether the attachment part 400 is aligned to the target alignment state based on the ACF film image captured by the bottom vision camera 500, thereby controlling the θ adjustment unit 800 and correcting the angular alignment of the attachment part 400 relative to the material.

[0097] The θ adjustment unit 800 can be precisely driven in μm units to correct errors, thereby improving the adhesion quality achieved by the attachment unit 400.

[0098] On the other hand, the ACF film attaching device with improved alignment accuracy of the present invention may include: an θ moving unit 810, which is disposed on the θ frame 101 in the same manner as the θ adjusting part 800, so that the θ adjusting part 800 slides along the length direction of the feeding guide part 300.

[0099] That is, the θ moving unit 810 causes the θ adjusting part 800 to slide along the X-axis direction, thereby causing the frame 100, which can be rotated by the θ adjusting part 800, to slide along the X-axis direction, thereby correcting the alignment of the material transferred by the feeding guide part 300 with the position of the attaching part 400.

[0100] According to the present invention, by using a bottom vision camera to acquire an image of the ACF film cut by the cutting part, the position and alignment state of the ACF film relative to the material are determined, thereby improving the alignment accuracy of the ACF film relative to the material.

[0101] The above description presents various embodiments of the present invention, but the present invention is not necessarily limited thereto. Those skilled in the art will recognize that various substitutions, modifications and alterations can be made within the scope of the technical concept of the present invention.

Claims

1. An ACF film bonding device with improved alignment accuracy, characterized in that, include: Frame (100); A cutting section (200) is provided on the front surface of the frame (100) to cut the ACF film (10). A bottom vision camera (500) is located at the lower part of the frame (100) to acquire and transmit images of the ACF film (10) cut by the cutting part (200). A feeding guide section (300) is located on the front part of the frame (100) to transfer materials; An attachment section (400) is provided on the front surface of the frame (100) in a liftable manner to attach an ACF film (10) cut by the cutting section (200) to the material conveyed by the feeding guide section (300); and The control unit (600) determines the position and alignment of the ACF film (10) to be attached by the attachment unit (400) by capturing images of the ACF film transmitted from the bottom vision camera (500), and synchronously controls the operation of the cutting unit (200), the feeding guide unit (300), the attachment unit (400), and the bottom vision camera (500). Also includes: A θ frame (101) is disposed at the lower part of the frame (100); An θ adjustment unit (800) is provided on the θ frame (101) to correct the angle of the ACF film (10) to be attached by the attachment unit (400) by rotating the frame (100) by a predetermined angle. An θ moving unit (810) is disposed on the θ frame (101) so that the θ adjusting part (800) slides along the length direction of the feeding guide part (300); A shaft frame (102) is disposed at the lower part of the θ frame (101); A shaft adjustment part (900) is disposed on the shaft frame (102), which adjusts the position of the ACF film (10) to be attached by the attachment part (400) by sliding the frame (100) in the front-back direction; and A top vision camera (700) acquires and transmits images of the material being transferred by the feeding guide (300). The control unit (600) determines the position and alignment of the material with the ACF film (10) by comparing the material image transmitted from the top vision camera (700) with the ACF film image transmitted from the bottom vision camera (500). The control unit (600) adjusts the light source settings of the bottom vision camera (500) and the top vision camera (700) in real time according to temperature and humidity, thereby optimizing the ACF film imaging acquisition environment of the bottom vision camera (500) and the material imaging acquisition environment of the top vision camera (700).

2. The ACF film bonding device with improved alignment accuracy according to claim 1, characterized in that, The frame (100) includes: ACF roll section (110), on which the ACF film (10) is wound. The cutting section (200) cuts the ACF film (10) rolled out from the ACF roll section (110).

3. The ACF film bonding device with improved alignment accuracy according to claim 1, characterized in that, The attachment portion (400) includes: Parallelism correction unit (410) corrects the position and parallelism of the attachment part (400).

4. The ACF film bonding device with improved alignment accuracy according to claim 1, characterized in that, The attachment part (400) controls the pressure based on a servo motor (420), a ball screw, a cylinder (430) and a force sensor (440) to attach the ACF film (10) to the material.

5. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The attachment part (400) attaches the ACF film (10) to the material with a pressure of 10N to 150N.

6. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The bottom vision camera (500) applies light source calibration to automatically correct the light source brightness and focus state in order to obtain an ACF film image of the ACF film (10).

7. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The bottom vision camera (500) selectively employs either a macro lens or a telecentric lens to acquire an ACF film image of the ACF film (10).

8. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The bottom vision camera (500) uses a ring light source, a coaxial light source and a strip light source as light sources, and automatically adjusts the light source according to the reflectivity and surface condition of the ACF film (10).

9. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The feeding guide section (300) adsorbs the material by vacuum adsorption, thereby preventing the material from moving.

10. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, When the control unit (600) determines, based on the image of the ACF film captured by the bottom vision camera (500), that the alignment error of the ACF film (10) exceeds a preset allowable range, it outputs a warning signal.

11. The ACF film bonding apparatus with improved alignment accuracy according to claim 1, characterized in that, The bottom vision camera (500) can slide along the length direction of the feeding guide (300) under the control of the control unit (600).

Images