TWI565583B - A manufacturing method of an edge protective optical film and its product - Google Patents

Description

Method and product for manufacturing optical film with edge protection function

The invention relates to a method and a product for manufacturing an optical film with edge protection function, and the main purpose thereof is to prevent the optical film from being degummed and overflowed due to vibration, collision and friction during production, packaging and transportation. If the glue is contaminated by dust and impurities in the air, causing appearance defects such as scattering of foreign matter between the optical film and the screen panel, there may be problems such as unevenness or wrapping bubbles, which may occur between the supplier and the customer. Customer Complaint. Contamination at the edge of the optical film is a killer of product yield, resulting in increased manufacturing costs and lost customer returns.

The optical film described above is mainly applied to a surface explosion-proof film used for a liquid crystal panel such as a mobile phone, a tablet computer, a touch screen, a digital camera, etc., and the purpose thereof is to provide an image resistance without lowering the quality of the liquid crystal display. Optical film with glare, scratch resistance and glass burst resistance.

Due to advances in technology, general electronic devices usually have a screen to show the state of their operation, and currently the LCD screen is the mainstream. LCD screens have the advantages of thinness, light weight and competitive price; but the disadvantage is that the surface is less scratch-resistant, and it is easy to cause the glass to rupture and its fragments are splashed and injured, so an optical film will usually be used. It is attached to the surface or inner layer of the screen to improve its scratch and impact protection. Even if the glass breaks, it will only There are cracks, and the glass fragments do not get out of the body and cause injury. The above-mentioned optical film for protecting the screen is mainly applied to a mobile phone, a tablet computer, a touch screen, a digital camera or a liquid crystal panel of various display screens, and the purpose thereof is to provide an image quality without impairing the liquid crystal display and imparting anti-glare property. Optical film with anti-scratch and anti-knocking functions.

Furthermore, in order to avoid glare caused by illuminating the liquid crystal screen outdoors or under strong light, anti-glare (AG), anti-reflection (AR), and low reflection are also applied to the optical film. Low-reflection (LR) or retardation film to eliminate reflection of ambient light, improve high reflectivity and improve contrast.

Generally, the manufacturing process of the optical film is to process a sheet to sheet lamination or a roll to roll lamination process according to the required size and specification. The cut optical film can be transported to the client after being stacked and packaged. The process used by the customer is to first remove the outer packaging of the optical film in the clean room, remove the inner package, and check the appearance, and confirm that there is no appearance defect before sending it to the production line. Before use, the release film is peeled off, and the optical film is adhered to the touch panel, and the end user only needs to tear off the protective film on the surface of the optical film to use.

For example, in the early paper industry, due to manual and equipment-based process restrictions, only one sheet of sheet-sheet production was produced. The disadvantages were not only the trouble of collecting materials, space, and transportation risks. The design of the processing machine is often limited by the feed rate of the sheet, which causes difficulties in the processing of the back section and bottlenecks in the design of the machine. The current technology has been transformed into a roll-to-roll process, which not only improves the yield of production, but also changes many key items in the machine design to a rotary type.

Roll-to-Roll Process is a high-performance, low-cost company Continued production method, the object of treatment is a film or soft board with flexible properties, the material of the film is plastic or stainless steel metal sheet with thickness less than 0.1mm. After the film is rolled out from the cylindrical roll, a special purpose function is added to the film or processed on the surface of the film, and then the film is rolled into a cylindrical shape or directly cut into a finished product, and "Unwind" is applied. The manufacturing method of "Process" and "Rewind/Cutting" is called a roll-to-roll process.

The above optical film is easy to rub the edge of the stacked product due to compression, vibration, shaking during production, packaging, transportation and when the client is in use, or is contaminated by dust and impurities in the air, even in a clean room. When it is cut into sheets, the edges are prone to degumming and overflowing. As the product is packaged, shipped or used by customers, dust is added to increase the contamination of the fitting surface. These are environmental or human factors. The resulting pollution will cause the following problems:

(1). The phenomenon of scattering of foreign matter, which is visible to the user, and is recognized as the shortcoming of the appearance of the product.

(2) When the optical film is attached to the screen panel, unevenness or bubbles may be generated on the contact surface.

(3). The yield of the manufacturer and the customer of the optical film is lowered, and the manufacturing cost is increased.

(4). It takes a lot of manpower to deal with customer complaints and even returns.

When the customer complaint occurs, the supplier usually sends a person to the customer to do the sampling test. The investigation of the pollution source is caused by the production, packaging, transportation or customer environment. It is often necessary to send people to the customer factory to help the customer to screen the goods, which is very labor-intensive. And if the product is unqualified or even returned, the loss is even greater.

In view of the above, in order to overcome the quality problem of the foregoing pollution, the present invention provides a method and a product for manufacturing an optical film having an edge protection function, which can be easily used in addition to providing a simple, high-performance and low-cost process. Tear off the upper and lower protective film, which is easy to attach to the screen panel, which can effectively prevent environmental or human factors pollution, improve production and use. The yield is reduced, and various losses of suppliers are reduced, thereby reducing manufacturing costs and achieving mass production conditions.

The invention provides a method, a device and a product for an optical film with an edge protection function, wherein the edge protection film can completely cover the optical film to achieve a protection function, and the main purpose thereof is as follows:

(1) Since each optical film is individually packaged, it can prevent the optical film from being shaken, vibrated, collided, etc. during the packaging and transportation, causing frictional degumming, and being exposed to dust and impurities in the air. Pollution.

(2) Since the manufacturing method is manufactured by a roll-to-roll lamination continuous manufacturing apparatus, and the optical film and the edge protection film can be produced in the same apparatus, the process is simple and high-performance. And low cost; and can effectively reduce pollution caused by environmental and human factors, thereby increasing production yield and reducing production costs.

(3) The upper and lower sheets of the edge protection film can be shifted by 1 to 3 mm (mm), which is easy to tear and peel off when used. It is also possible to adopt a dislocation structure formed by the upper and lower edge protective films having a larger size and a smaller size.

The optical film of the present invention is mainly applied to a surface protective film used for a liquid crystal panel such as a mobile phone, a tablet computer, a touch screen, a digital camera, etc., especially for a mobile phone, a tablet computer or the like having a screen size of 4 or more. The required optical film has a large area and is therefore more susceptible to contamination. Therefore, the edge protection film of the present invention can completely cover the optical film to achieve a protective function and prevent it from being contaminated by dust or the like.

The composition of the optical film of the present invention is as shown in Fig. 1: the optical film 1 The present invention comprises a functional optical film 2, a protective film 3 and a release film 9; wherein the functional optical film 2 comprises a substrate 6 having an optical functional layer 5 on one side thereof. The other side has an optical adhesive layer (OCA) 7; wherein the surface of the protective film 3 is coated with a pressure sensitive adhesive layer 4, which is attached to the optical functional layer 5, and the release film 9 is attached to the optical adhesive layer 7. The surface of the release film 9 contains a release agent 8.

The optical functional layer 2 has an effect of an anti-glare (AG), a hard-coat (HC), and an anti-scattering film (ASF).

As shown in FIG. 2, the optical film with edge protection function provided by the present invention is provided by the upper edge protective film 10 of the optical film 1 before being bonded to the optical film. The lower edge protective film 11 is composed of two layers of the optical film 1 and completely covered with the optical film 1. The upper and lower edge protective film surfaces contain a micro-adhesive protective layer 12.

As shown in FIG. 3, after the edge protection film is bonded to the optical film, the upper edge protection film 10 and the lower edge protection film 11 are attached to the offset 13 by about 1 to 3 mm (mm). Both sides of the optical film 1. Its main advantages: (1). It can completely cover the optical film to protect it from dust and impurities in the air; (2). The upper and lower edge protective films are staggered and displaced. It can be easily peeled off when it is convenient to use.

Wherein, the micro-adhesive protective layer 12 on the surface of the edge protective film may use a silicone type, an acrylic type or a PU type pressure sensitive adhesive (PSA), and the adhesion force thereof must be less than any of the optical film laminated plastic film structures. The adhesion between the two layers can be used when the optical film is used. Give priority to tearing off. The adhesion between the two layers of the optical film of the optical film is generally 10 to 30 g/in (g/in), so the adhesion of the micro-adhesive protective layer of the edge protective film needs to be less than that of the above optical film. The adhesion between the two layers is at least 5 grams per inch (g/in).

Furthermore, the choice of material for the edge protection film must meet the following conditions:

(1). It can resist the bonding, that is, the edge of the protective film is not easy to be opened, otherwise the edge of the optical film is easily contaminated.

(2). Wrinkles or air bubbles do not occur when applied.

(3). The material is highly transparent, which is convenient for visual inspection or optical inspection of the quality tube.

(4). The stiffness of the material can be 0.04*10 ^-3 ~1.05*10 ^-3 Pascal ‧ ³ (Pa ‧ m ³ )

The stiffness of the material of the edge protection film varies with the Young's modulus (E) and its thickness (t) of different materials. The formula is as follows: stiffness = E (Young's modulus) x t ³ (thickness) The Young's modulus (E) is the positive strain generated when the elastic material is subjected to the forward stress. When the deformation number does not exceed the certain elastic limit of the corresponding material, the ratio of the positive stress to the forward strain is defined. The Young's modulus of the material. The best stiffness of the material can be 0.04*10 ^-3 ~1.05*10 ^-3 Pascal ‧ ³ (Pa ‧ m ³ )

Based on the above material selection considerations, the material used for the edge protection film of the present invention may be PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene) or OPP (extended polypropylene). Its Young's coefficients are as follows:

When the edge protection film of the present invention is made of PET, the thickness thereof may be 25 to 75 micrometers ( μm ), and the stiffness thereof is 0.04*10 ^-3 to 1.05*10 ^-3 Pascals ft ³ ( Pa‧m ³ ). However, if the thickness of the PET is >75 micrometers ( μm ), the edge protective film is relatively rigid and hard. When it is attached to the optical film, the edge thereof is easily cleaved, and the edge of the optical film is easily contaminated; Conversely, if the thickness of the PET is <25 micrometers ( μm ), the edge protective film is less rigid and softer, and when it is attached to the optical film, wrinkles or bubbles are easily generated. Therefore, if a material with a large Young's modulus is used, the thickness needs to be thin to achieve a suitable stiffness.

The invention provides a method for manufacturing an optical film with edge protection function, which is manufactured by a roll-to-roll lamination continuous manufacturing device, the process comprising: firstly rolling a roll of optics The film is rolled out at the same time as a roll of the lower edge protective film; the optical film is cut to the thickness of the optical film to form an optical film; after the optical film is removed, another upper roll edge protective film is rolled out. , the original edge protection film is shifted by a displacement, and is attached to the surface of the optical film; the edge of the optical film is pushed forward and backward for a distance, and then the sandwich structure is cut by the cutter module, so that an edge protection function is obtained. Diaphragm.

Figure 4 is a top view of the optical film and the lower edge protective film after bonding and punching, wherein the optical film 1 and a roll of the lower edge protective film 11 are simultaneously rolled out and attached, and the cutting module is controlled. The punching type is cut to the thickness of the optical film 1, and the optical film after the cutting is cut The scrap 14 is cut and removed by a winding device. As shown in Fig. 5, the side view of the optical film and the lower edge protective film is cut and the cutting waste is removed.

As shown in FIG. 6 , another roll of the upper edge protective film 10 is continuously rolled out, and the lower edge protective film 11 having the same width is attached to the surface of the optical film 1 by shifting left and right in a displacement manner. The staggered displacement is about 1 to 3 mm (mm), and then the optical film 1 is pushed forward and backward for a distance, and then the sandwich structure is cut by a cutting module, so that the image is as shown in FIG. An optical film with edge protection. The staggered displacement edge protection film is designed to be easily peeled off when it is convenient to use.

The edge protection film may also be designed to have a smaller upper layer and a larger lower layer, so as to prevent the upper and lower edge protective films from being formed in the same width, and the edge line is fitted due to the fitting tolerance problem, so that the user is tearing. Except for the edge protection film, it is difficult to operate.

The bonding process of the optical film and the edge protective film may further add a punched circular hole module before the optical film and the lower edge protective film are bonded together, and the module of the punched circular hole may be added according to the customer. For the different specifications of the optical film, various holes, sizes and positions of the holes are made on the optical film according to the requirements.

The invention relates to a method and a product for manufacturing an optical film with edge protection function. The edge protection film can prevent the optical film from being exposed to dust and impurities in the air during packaging, transportation and use. Contamination; and because the optical film and the edge protective film roll-to-roll and punch-cut process are completed in the same clean room, it can effectively reduce the dust and impurity pollution in the environment. The invention improves the yield of optical film production and customer use, and reduces the production cost; the invention further provides a simple, high-performance and low-cost process method.

1‧‧‧Optical diaphragm

2‧‧‧ functional optical layer

3‧‧‧Protective film

4‧‧‧pressure layer

5‧‧‧Optical functional layer

6‧‧‧Substrate

7‧‧‧Optical adhesive layer

8‧‧‧ Release agent

9‧‧‧ release film

10‧‧‧Upper edge protective film

11‧‧‧Underline edge protective film

12‧‧‧Micro-adhesive protective layer

13‧‧‧Staggered displacement

14‧‧‧Cut film cutting waste

15‧‧‧PET substrate

16‧‧‧Anti-glare film

17‧‧‧Antistatic protective film

18‧‧‧矽胶胶胶

19‧‧‧PET release film

20‧‧‧Optical film roll-out device

21‧‧‧Underline edge protective film roll-out device

22‧‧‧Under layer release film winding device

23‧‧‧Tear film point

24‧‧‧ FIT

25‧‧‧ punching round hole module

26‧‧‧Chong type frame module

27‧‧‧Storage machine

28‧‧‧Optical film waste winding device

29‧‧‧Upper edge protective film roll-out device

30‧‧‧Upper release film winding device

31‧‧‧Finished cutting module

The above and other objects, advantages and embodiments of the present invention will become more apparent and understood.

Fig. 2 is a schematic view showing the optical film of the present invention before being bonded to the upper and lower edge protective films.

Fig. 3 is a schematic view showing the optical film of the present invention after being bonded to the upper and lower edge protective films.

Fig. 4 is a top view of the optical film of the present invention bonded to the lower edge protective film and punched and cut.

Fig. 5 is a side view showing the optical film of the present invention and the lower edge protective film being punched and cut and the cutting waste is removed.

Figure 6 is a side view of the optical film of the present invention before it is bonded to the upper and lower edge protective films.

Figure 7 is a schematic view showing the structure of an optical film of the first embodiment of the present invention.

Figure 8 is a schematic view showing the structure of the optical film sheet and the lower edge protective film bonding and cutting device according to the first embodiment of the present invention.

Figure 9 is a schematic view showing the structure of the optical film sheet and the upper edge protective film bonding and cutting device according to the first embodiment of the present invention.

In order to further illustrate the technical means and efficacy of the present invention for achieving the intended purpose of the present invention, a specific embodiment of manufacturing an optical film having an edge protection function according to the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Structure, methods, steps, features and their efficacy, as detailed below.

The foregoing and other objects, features and advantages of the invention will be apparent from Through the description of the specific embodiments, when the intended purpose of the invention is achieved, and the required technical means and functions are taken, a deeper and more specific understanding can be obtained. However, the drawings are only for reference and explanation, and are not intended to be used for this purpose. The invention is limited. For convenience of explanation, in the following embodiments, the same elements are denoted by the same reference numerals.

(Example 1) As shown in Fig. 7, the optical film of the first embodiment of the present invention uses a PET substrate 15 having a thickness of 100 μm and an anti-glare film 16 having a thickness of 5 μm, which is coated by roll-to-roll. The method provides an anti-glare optical functional film having a haze of 18%; the anti-glare film surface of the optical functional film is further adhered to an antistatic protective film 17 of a type PF65A1N and a thickness of 60 μm; and in the optical functional film The PET substrate surface 15 is then bonded to a 50 micron thick acrylic optical pressure sensitive adhesive 18 and a 75 micron thick PET release film 19 to provide an anti-glare and explosion-proof optical film.

The structure of the upper edge protective film on the first embodiment is composed of a PET film having a thickness of 50 μm, coated with a micro-adhesive gelatin pressure-sensitive adhesive having a thickness of 10 μm, and another PET film having a thickness of 38 μm. The release film is laminated. The adhesion of the micro-adhesive silicone gel is 5 g/inch.

8 and 9 are diagrams showing an apparatus for manufacturing an optical film having an edge protection function according to an embodiment of the present invention, wherein the manufacturing apparatus is composed of at least three film unwinding devices, two roll-to-roll bonding modules, and at least Two cutting modules are formed and a winding device can be added as needed; two of the film are rolled out of the device, followed by a roll of roll-to-roll module, and then a cutting module that can control the cutting depth Providing the function of punching and cutting, adding a winding device for removing the optical film edge material as needed; placing another roll-out device for controlling the horizontal displacement of the control film on one side, followed by another roll-to-roll The module is combined with a cutting module.

As shown in Fig. 8, a roll of edge protection film is unwound through the lower edge protective film take-up device 21, and the PET release film of the edge protection film is peeled off at a tear film point 23, and the lower layer is peeled off. The winding device 22 winds up the PET release film; the other roll of optical film is wound up by an optical film unwinding device 20, and is bonded to the lower edge protective film at a bonding point 24 to form a lower edge protective film. The optical film is firstly punched through a circular hole module 25, and then the cutting depth is controlled to the thickness of the optical film via a punching frame module 26, and the optical film frame is cut to the desired The size. Wherein, a accumulator 27 is connected to the punching circular hole module 25 and the punching outer frame module 26, and its main function is to make a buffering device between the two cutting modules, and avoid the membrane of the two cutting modules. When there is a synchronic difference in (web), the film may be unevenly pulled or loosened.

As shown in Fig. 9, after the optical film is cut by the outer frame module 26, the cut film of the optical film is torn off at a tear film point 23, and is wound by an optical film waste winding device 28 The cut waste material is taken up; another roll of edge protection film is rolled up through an upper edge protective film take-up device 29, and the PET release film of the edge protection film is peeled off at a tear film point 23, and is received by an upper release film. Rolling device 30 retracts the PET release The upper edge protective film is offset by 2 mm (mm), and is bonded to the optical film after removing the waste material at a bonding point 24 to form an optical film having upper and lower edge protective films; The finished cutting module 31 is pushed outward 10 mm (mm) before and after the optical film to cut the sandwich structure, so that an optical film with edge protection function can be obtained. The edge protective film has an adhesion of 5 g/inch, which is less than the adhesion of the acrylic pressure sensitive adhesive on the protective film of the optical film of 18 g/inch. When the adhesion of the edge protective film is 15 g/inch, the peeling of the edge protective film occasionally causes the problem that the optical film protective film is peeled off. Therefore, the adhesion of the edge protection film is preferably at least 5 g/in (g/in) less than the adhesion of the pressure sensitive adhesive on the optical film.

(Example 2) In the same manner as in the first embodiment, an anti-glare and explosion-proof optical film was produced. The structure of the upper and lower edge protective film of the second embodiment was formed by a PP film having a thickness of 60 μm. After coating a micro-adhesive silicone pressure sensitive adhesive with a thickness of 10 micrometers, it is laminated with another 25 micron OPP release film. According to the same manufacturing method of the first embodiment, the upper edge protective film and the optical film are wound into a roll, the hole is punched, the punched outer frame, the lower edge protective film is bonded, and finally the finished product is cut. The sandwich structure is cut so that an optical film with edge protection is obtained.

(Example 3) In the same manner as in the first embodiment, an anti-glare and explosion-proof optical film was produced. The structure of the upper and lower edge protective film on the third embodiment was made of a 75 micron thick OPP film on the surface thereof. After coating a micro-adhesive silicone pressure sensitive adhesive with a thickness of 10 micrometers, it is laminated with another 25 micron OPP release film. According to the same manufacturing method of the first embodiment, the upper edge protective film and the optical film are wound into a roll, the hole is punched, the punched frame is attached, and the lower edge protective film is bonded, and finally After the finished product is cut, the sandwich structure is cut, so that an optical film with edge protection function can be obtained.

(Comparative Example 1) An anti-glare and explosion-proof optical film was produced in the same manner as in Example 1, except that the edge film was not used.

(Comparative Example 2) An anti-glare and explosion-proof optical film was produced in the same manner as in Example 1. The structure of the upper and lower edge protective films of Comparative Example 2 was made of a PET film having a thickness of 100 μm on the surface thereof. After coating a micro-adhesive silicone pressure sensitive adhesive with a thickness of 10 micrometers, it is laminated with another 38 micron PET release film. According to the same manufacturing method of the first embodiment, the upper edge protective film and the optical film are wound into a roll, the hole is punched, the punched outer frame, the lower edge protective film is bonded, and finally the finished product is cut. The sandwich structure is cut so that an optical film with edge protection is obtained.

(Comparative Example 3) In the same manner as in the first embodiment, an anti-glare and explosion-proof optical film was produced. The structure of the upper and lower edge protective film on the third comparative example was a film of 19 μm thick PET film on the surface thereof. After coating a micro-adhesive silicone pressure sensitive adhesive with a thickness of 10 micrometers, it is laminated with another 25 micron PET release film. According to the same manufacturing method of the first embodiment, the upper edge protective film and the optical film are wound into a roll, the hole is punched, the punched outer frame, the lower edge protective film is bonded, and finally the finished product is cut. The sandwich structure is cut so that an optical film with edge protection is obtained.

The optical film used is a PET substrate having a thickness of 100 μm, and is adhered to an anti-glare film having a thickness of 5 μm to obtain an anti-glare optical functional film having a haze of 18%; and the anti-glare film surface is further combined with a model. PF65A1N, anti-static protective film with a thickness of 60 microns; on the surface of the PET substrate, it is bonded with a 50 μm thick acrylic optical pressure sensitive adhesive and a 75 μm thick PET release film to obtain a 10 cm* 10 cm anti-glare explosion-proof optical diaphragm. And using different thickness of PET as the material of the edge protection film, visually inspected by a microscope, the microscope magnification is 20 times, and the light intensity is 1500 Lux, the amount of foreign matter having an particle diameter larger than 100 μm on the optical film is examined. The comparison of the number of dust pollutions (>100 microns) obtained is as follows:

From the measurement data of the number of dust pollution in the above table, it can be seen that PET has a thickness of 50 μm ( μm ) for the material of the edge protective film, and the stiffness of the PET is 0.31*10. ^-3 Pascal ‧ m ^{3 (Pa‧m 3),} the optical film can be easily bonded, and the least polluted; when the thickness of the PET of Comparative Example two 100 microns (μ m), the edge of the protective film of greater stiffness And it is hard, when it is attached to the optical film, the edge thereof is easy to be opened, and the edge of the optical film is easily contaminated; when the thickness of the PET of Comparative Example 3 is 19 micrometers ( μm ), the rigidity of the edge protective film It is small and soft, and when it is attached to the optical film, wrinkles or bubbles are likely to be generated; in the first comparative example, since it is not protected by the edge protective film, the pollution is the most serious. Therefore, when PET is used as the material of the edge protective film, the thickness can be 25~75 micrometers ( μm ), and the stiffness is 0.04*10 ^-3 ~1.05*10 ^-3 Pascals ft ³ ( Pa‧m ³ ), which provides the material rigidity of the best edge protection film, and can be easily bonded to the optical film.

The optical film used is a PET substrate having a thickness of 100 μm, and is adhered to an anti-glare film having a thickness of 5 μm to obtain an anti-glare optical functional film having a haze of 18%; and the anti-glare film surface is further combined with a model. PF65A1N, anti-static protective film with a thickness of 60 microns; on the surface of the PET substrate, it is bonded with a 50 μm thick acrylic optical pressure sensitive adhesive and a 75 μm thick PET release film to obtain a 10 cm* 10 cm anti-glare explosion-proof optical diaphragm. The edge protective film of different materials and thickness is used for visual inspection through a microscope. The magnification of the microscope is 20 times and the light intensity is 1500 Lux. The amount of foreign matter having an particle diameter larger than 100 μm on the optical film is examined. The comparison of the number of dust pollution (>100 microns) is as follows:

It can be seen from the measurement data of the number of dust pollution in the above table that the first embodiment of the present invention uses PET as the edge protective film material and has a thickness of 50 micrometers ( μm ); in the second embodiment, PP is used as the edge protective film material, and the thickness is 60. Micron ( μm ); and the third embodiment is made of OPP and has a thickness of 75 micrometers ( μm ). The edge protection film of the three embodiments can completely cover the optical film, thereby effectively reducing the edge of the optical film. Pollution and protection to protect it from dust and impurities in the air; and in Comparative Example 1, due to the absence of edge protection film, it is subject to dust pollution and edge degumming or overflowing. The edge protection film of the first to third embodiments of the present invention uses different materials, and the Young's modulus (E) is also different, but the thickness is adjusted to be 0.04*10 ^-3 to 1.05* as long as the thickness is adjusted. ^10-3 Pascal ‧ m ^{3 (Pa‧m 3),} can also provide the best edge protection material film, and the optical film bonded to easily achieve the function to protect the optical film contamination.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the methods and technical contents disclosed above without departing from the technical scope of the present invention. It is still within the scope of the technical solution of the present invention to make any simple modifications, equivalent changes and modifications to the above embodiments.

1‧‧‧Optical diaphragm

10‧‧‧Upper edge protective film

11‧‧‧Underline edge protective film

13‧‧‧Staggered displacement

Claims (6)

A method for manufacturing an optical film with edge protection function mainly comprises: first rolling out a roll of optical film and a roll of edge protection film; performing punching and cutting on the optical film surface to form an optical film thickness to form an optical a film, wherein the optical film is a glued multi-layer film structure; after the optical film edge material is removed, another roll of edge protection film is rolled out, and the original edge protection film is shifted by a displacement, wherein the adhesive on the surface of the edge protection film is adhered. The force is less than 5 g/in (g/in) of adhesion between any two layers of the glued multilayer film structure, conforming to the surface of the optical film; pushing the distance before and after the edge of the optical film and cutting the sandwich structure with a cutter In this way, an optical film whose edge is completely covered with a protective tool can be obtained. A method of manufacturing an optical film having an edge protection function according to the invention of claim 1, wherein the upper and lower sheets of the edge protection film are offset by 1 to 3 mm. An optical film having an edge protection function, which is manufactured by a method for manufacturing an optical film having an edge protection function according to claim 1, wherein the optical film is a glued multilayer film structure, comprising a functional optical film, a protective film and a release film; wherein the functional optical film comprises a substrate having an optical functional layer on one side and an optical adhesive layer on the other side; wherein the protective film is coated with a pressure sensitive adhesive, Bonded to the optical functional layer, the release film is attached to the optical adhesive layer; the edge protective film is composed of two areas It is composed of a protective film larger than the optical film, wherein the adhesive force on the surface of the edge protective film is less than 5 g/in (g/in) of adhesion between any two layers in the laminated multilayer film structure, and can be respectively attached to the optical The two sides of the membrane are completely covered with an optical film, wherein the surface of the edge protection film contains a release agent. An optical film having an edge protection function according to the invention of claim 4, wherein the edge protection film is made of PET, PP and OPP. An optical film having an edge protection function according to the fourth aspect of the invention, wherein the edge protection film has a material and a thickness of 0.04*10 ^-3 to 1.05*10 ^-3 Pascal ‧ ³ (Pa‧m ³ ). An optical film having an edge protection function as described in claim 4, wherein the edge protection film is made of PET and has a thickness of 25 to 75 micrometers (μm).