A bonding system for improving the bonding strength between cover plate and optical film

Abstract

The utility model provides a bonding system for improving the bonding strength between a cover plate and an optical film, comprising: an optical film, a cover plate substrate, a tin surface detection device, a bonding device, a pulling force testing device and a conveyor belt; the tin surface detection device is used to detect the orientation of the tin surface of the cover plate substrate; the bonding device is used to bond the optical film to the non-tin surface of the cover plate substrate when the tin surface is facing downward, so as to obtain a film-bonded cover plate; the pulling force testing device is used to test whether the bonding strength of the film-bonded cover plate is qualified; the conveyor belt is used to sequentially convey the cover plate substrate to the tin surface detection device and the bonding device, and convey the film-bonded cover plate to the pulling force testing device. Optical film bonding is performed only when the tin surface is facing downward, which can improve the bonding effect of the two. After bonding, an automatic bonding force test is performed without manual operation, thereby avoiding misjudgment and improving test efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and in particular to a bonding system for improving the bonding force between a cover plate and an optical film. Background Art

[0002] In the traditional process of bonding the cover plate and the optical film, since one side of the cover glass is tin-plated and the other side is non-tin-plated, without distinguishing the tin side and non-tin side of the cover glass, the adhesion between the "tin side" and the "optical film" is not as strong as the adhesion between the "non-tin side" and the "optical film". If the optical film is attached to the tin side of the cover plate, the adhesion between the two is insufficient, and the optical film is easy to warp or even fall off, which is easy to fail the test when the optical film is tested for tensile force. In addition, in the traditional tensile force test, the operator uses a tensile gauge to pull, but the manual pulling force is not stable, which is easy to cause misjudgment. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a bonding system for improving the bonding force between a cover plate and an optical film.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The embodiment of the utility model provides a bonding system for improving the bonding force between a cover plate and an optical film, comprising: an optical film, a cover plate substrate, a tin surface detection device, a bonding device, a pulling force testing device and a conveyor belt;

[0006] The tin surface detection device is used to detect the direction of the tin surface of the cover substrate;

[0007] The laminating device is used to laminate the optical film to the non-tin surface of the cover substrate when the tin surface faces downward, so as to obtain a film-laminated cover;

[0008] The pulling force testing device is used to test whether the adhesion force of the film cover is qualified;

[0009] The conveyor belt is used to sequentially convey the cover plate substrate to the tin surface detection device and the laminating device, and to convey the film-laminated cover plate to the pulling force testing device.

[0010] As a preferred embodiment of the utility model, the tin surface detection device includes a transmission tin surface identification instrument and a camera photosensitive device;

[0011] The transmissive tin surface recognition instrument is embedded in the conveyor belt, and is used to illuminate upward from below the cover substrate. If a white glow appears, the tin surface is facing downward, otherwise, the tin surface is facing upward;

[0012] The camera photosensitive device is used to identify whether the white glow appears.

[0013] As a preferred embodiment of the present utility model, the laminating device includes a flip module and a laminating module;

[0014] The flip module is electrically connected to the tin surface detection device. When the tin surface is facing upward, the flip module is activated to flip the upper and lower surfaces of the cover substrate so that the tin surface of the cover substrate faces downward.

[0015] When the tin surface faces downward, the bonding module is used to bond the optical film to the non-tin surface of the cover substrate.

[0016] As a preferred embodiment of the present utility model, the pulling force testing device includes a vacuum adsorption module, a vacuum column suction module and a detection camera;

[0017] The vacuum adsorption module is arranged on the conveyor belt, and adsorbs the film-adhering cover plate below the film-adhering cover plate;

[0018] The vacuum column suction module includes four vacuum columns;

[0019] The vacuum column respectively sucks the four corners of the film-sticking cover plate above the film-sticking cover plate, and performs suction and pulling;

[0020] The detection camera is used to detect whether the optical films at the four corners of the film cover are pulled up;

[0021] If the four corners of the optical film are not pulled up, the film cover is qualified, otherwise the film cover is unqualified.

[0022] As a preferred embodiment of the present invention, it further comprises an alarm device, wherein the alarm device is used to send out an alarm signal when the adhesion force of the film cover is unqualified.

[0023] As a preferred implementation of the present utility model, the alarm device includes a signal light.

[0024] As a preferred implementation manner of the present utility model, the alarm device includes a buzzer.

[0025] As a preferred embodiment of the present invention, the optical film includes an anti-reflection layer and an optical adhesive layer.

[0026] As a preferred embodiment of the present invention, the optical film includes an anti-fingerprint layer and an optical adhesive layer.

[0027] As a preferred embodiment of the present invention, it further comprises a bubble exhaust device, and the bubble exhaust device is arranged between the laminating device and the pulling force testing device.

[0028] Compared with the prior art, the advantages and positive effects of the utility model are:

[0029] The technical solution of the embodiment of the utility model determines the orientation of the tin surface in the cover substrate through the tin surface detection device. Since laminating the optical film on the tin surface will result in poor lamination between the two, the optical film lamination is performed only when the tin surface is facing downward (that is, the lamination surface facing upward is the non-tin surface), which can improve the lamination effect of the two. After lamination, the lamination force is automatically tested without manual operation, avoiding misjudgment and improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A structural schematic diagram of a bonding system for improving the bonding strength between a cover plate and an optical film provided by the utility model;

[0031] Figure 2 A structural schematic diagram of a bonding system for improving the bonding strength between a cover plate and an optical film provided by the utility model;

[0032] Figure 3 A schematic diagram of the structure of an optical film provided by the utility model;

[0033] Figure 4 The present invention is a schematic structural diagram of an optical film provided by the present invention. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1 , the embodiment of the utility model provides a bonding system for improving the bonding force between a cover plate and an optical film, comprising: an optical film 100, a cover plate substrate 200, a tin surface detection device 300, a bonding device 400, a pulling force testing device 500 and a conveyor belt 600;

[0039] The tin surface detection device 300 is used to detect the direction of the tin surface of the cover substrate 200;

[0040] The laminating device 400 is used to laminate the optical film 100 to the non-tin surface of the cover substrate 200 when the tin surface faces downward, so as to obtain a film-laminated cover 210;

[0041] The pulling force testing device 500 is used to test whether the adhesion force of the film cover is qualified;

[0042] The conveyor belt 600 is used to sequentially convey the cover substrate 200 to the tin surface detection device 300 and the laminating device 400 , and to convey the film-laminated cover substrate to the pulling force testing device 500 .

[0043] The technical solution of the embodiment of the utility model determines the orientation of the tin surface in the cover substrate through the tin surface detection device. Since laminating the optical film on the tin surface will result in poor lamination between the two, the adhesion between the "tin surface" and the "optical film" is not as strong as the lamination between the "non-tin surface" and the "optical film", so the non-tin surface is selected to be laminated with the optical film. Therefore, the optical film is laminated only when the tin surface is facing downward (that is, the lamination surface facing upward is the non-tin surface), which can improve the lamination effect of the two. After lamination, the lamination force is automatically tested without manual operation, avoiding misjudgment and improving test efficiency.

[0044] As a preferred embodiment of the present invention, refer to Figure 1-2 , the tin surface detection device 300 includes a transmission tin surface identification instrument 310 and a camera photosensitive device 320;

[0045] The transmissive tin surface recognition instrument 310 is embedded in the conveyor belt 600. The transmissive tin surface recognition instrument 310 is used to illuminate upward from below the cover substrate 200. If a white glow appears, the tin surface is facing downward, otherwise, the tin surface is facing upward.

[0046] The camera and light sensing device 320 is used to identify whether the white glow appears.

[0047] The transmissive tin surface identification device 310 includes an ultraviolet light source, which can be kept turned on all the time and attached to the lower glass surface of the cover substrate, while the camera and light-sensing device 320 detects above the glass of the cover substrate.

[0048] The conveyor belt 600 may be a transparent conveyor belt.

[0049] As a preferred embodiment of the present invention, refer to Figure 1-2 , the laminating device 400 includes a flip module 410 and a laminating module 420;

[0050] The flip module 410 is electrically connected to the tin surface detection device 300. When the tin surface is facing upward, the flip module 410 is activated to flip the upper and lower surfaces of the cover substrate 200 so that the tin surface of the cover substrate 200 faces downward.

[0051] When the tin surface faces downward, the bonding module is used to bond the optical film 100 to the non-tin surface of the cover substrate 200 .

[0052] If the tin surface is facing downward, there is no need to start the flip module 410, and only the bonding module 420 is directly started to bond the optical film. The embodiment of the utility model sets the flip module 410, so that no matter what the initial tin surface of the cover substrate is facing, it can be adjusted to face the tin surface downward and the non-tin surface upward, so that the optical film is bonded to the non-tin surface of the cover substrate, thereby improving the bonding strength of the two.

[0053] As a preferred embodiment of the present invention, refer to Figure 1-2 , the pulling force testing device 500 includes a vacuum adsorption module 510, a vacuum column suction module 520 and a detection camera 530;

[0054] The vacuum adsorption module 510 is disposed on the conveyor belt 600 and adsorbs the film-adhering cover plate 210 below the film-adhering cover plate 210;

[0055] The vacuum column suction module 520 includes four vacuum columns 521;

[0056] The vacuum column 521 respectively sucks the four corners of the film-sticking cover plate 210 above the film-sticking cover plate 210 and performs suction and pulling;

[0057] The detection camera 530 is used to detect whether the optical films at the four corners of the film cover plate 210 are pulled up;

[0058] If the four corners of the optical film are not pulled up, the film cover is qualified, otherwise the film cover is unqualified.

[0059] The vacuum adsorption module 510 may include a plurality of vacuum holes, such as four. When the film cover plate 210 reaches the vacuum adsorption module 510, vacuum adsorption begins below the film cover plate 210. When the vacuum adsorption module 510 reaches the set adsorption force, the vacuum column adsorption module 520 is started, and the four vacuum columns adsorb the optical film surface at the four corners of the film cover plate 210 and pull it. If the four corners of the optical film are not pulled up, the film cover plate is qualified, otherwise the film cover plate is unqualified.

[0060] Furthermore, when the film cover is unqualified, the pulling force testing device 500 can also transmit the detection failure signal to the client through the signal transmission module, so that the factory line will send out an alarm to prompt the operator to take it away for repair.

[0061] As a preferred embodiment of the present invention, it further comprises an alarm device, wherein the alarm device is used to send out an alarm signal when the adhesion force of the film cover is unqualified.

[0062] As a preferred implementation of the present utility model, the alarm device includes a signal light.

[0063] As a preferred implementation manner of the present utility model, the alarm device includes a buzzer.

[0064] As a preferred embodiment of the present invention, refer to Figure 3 The optical film 100 includes an anti-reflection layer 110 and an optical adhesive layer 120 .

[0065] As a preferred embodiment of the present invention, the optical film 100 includes an anti-fingerprint layer 130 and an optical adhesive layer 140 .

[0066] As a preferred embodiment of the present invention, it further includes a bubble removal device 700, which is disposed between the laminating device 400 and the pulling force testing device 500. The bubble removal device can scrape out bubbles between the optical film and the cover substrate in the film laminating cover to improve product quality.

[0067] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A bonding system for improving the bonding strength between a cover plate and an optical film, characterized in that: include: Optical film, cover substrate, tin surface detection device, lamination device and tensile force testing device and conveyor belt; The tin surface detection device is used to detect the direction of the tin surface of the cover substrate; The laminating device is used to laminate the optical film to the non-tin surface of the cover substrate when the tin surface faces downward, so as to obtain a film-laminated cover; The pulling force testing device is used to test whether the adhesion force of the film cover is qualified; The conveyor belt is used to sequentially convey the cover plate substrate to the tin surface detection device and the laminating device, and to convey the film-laminated cover plate to the pulling force testing device.

2. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: The tin surface detection device comprises a transmission tin surface identification instrument and a camera photosensitive device; The transmissive tin surface recognition instrument is embedded in the conveyor belt, and is used to illuminate upward from below the cover substrate. If a white glow appears, the tin surface is facing downward, otherwise, the tin surface is facing upward; The camera photosensitive device is used to identify whether the white glow appears.

3. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: The laminating device comprises a flip module and a laminating module; The flip module is electrically connected to the tin surface detection device. When the tin surface is facing upward, the flip module is activated to flip the upper and lower surfaces of the cover substrate so that the tin surface of the cover substrate faces downward. When the tin surface faces downward, the bonding module is used to bond the optical film to the non-tin surface of the cover substrate.

4. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: The pulling force testing device comprises a vacuum adsorption module, a vacuum column suction module and a detection camera; The vacuum adsorption module is arranged on the conveyor belt, and adsorbs the film-adhering cover plate below the film-adhering cover plate; The vacuum column suction module includes four vacuum columns; The vacuum column respectively sucks the four corners of the film-sticking cover plate above the film-sticking cover plate, and performs suction and pulling; The detection camera is used to detect whether the optical films at the four corners of the film cover are pulled up; If the four corners of the optical film are not pulled up, the film cover is qualified, otherwise the film cover is unqualified.

5. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: It also includes an alarm device, which is used to send out an alarm signal when the adhesion force of the film cover is unqualified.

6. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 5, characterized in that: The warning device includes a signal light.

7. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 6, characterized in that: The alarm device includes a buzzer.

8. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: The optical film comprises an anti-reflection layer and an optical adhesive layer.

9. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: The optical film comprises an anti-fingerprint layer and an optical adhesive layer.

10. The bonding system for improving bonding strength between a cover plate and an optical film according to claim 1, characterized in that: It also includes a bubble exhaust device, which is arranged between the laminating device and the pulling force testing device.

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