CN222420579U

CN222420579U - Optical film structure

Info

Publication number: CN222420579U
Application number: CN202420956081.1U
Authority: CN
Inventors: 黄亮亮
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2024-05-06
Filing date: 2024-05-06
Publication date: 2025-01-28
Anticipated expiration: 2034-05-06

Abstract

The embodiment of the utility model belongs to the technical field of optical films. The utility model also relates to an optical film structure, which comprises an optical film main body, wherein the optical film main body comprises an optical film part and an adhesive layer arranged on the optical film part, a leveling component is arranged on one side, far away from the adhesive layer, of the optical film part, the leveling component comprises a PET film OCA adhesive layer connected with the optical film part, one side, far away from the optical film part, of the PET film OCA adhesive layer is connected with a PET film layer, and the PET film layer is used for leveling the optical film part so as to realize leveling of the optical film main body. The leveling component comprises the PET film OCA adhesive layer connected with the optical film part, the PET film OCA adhesive layer is connected with the PET film layer, and after the PET film OCA adhesive layer is used for connecting the PET film layer with the optical film part, the PET film layer can level the optical film part so as to level the optical film main body, namely, the leveling component reduces the bending condition of the optical film main body by leveling the optical film main body in advance, and can remarkably reduce the problems of bubbles, offset and the like after film pasting.

Description

Optical film structure

Technical Field

The utility model relates to the technical field of optical films, in particular to an optical film structure.

Background

In the vehicle display industry, the application of optical films is a key factor for ensuring the visual quality and performance of a display, wherein the optical films such as AG films and AR films are widely applied to improve the anti-glare, anti-reflection and other characteristics of the display, and the optical films need to be accurately attached to the surface of a cover plate in the production process.

In the traditional film pasting technology, the optical film is adsorbed on the platen by vacuum and then is rolled and attached by a machine roller, however, the technology has a remarkable problem that when the optical film is severely warped or deformed, the optical film cannot be completely absorbed by the platen, so that the problems of bubbles, deviation, even incapability of attaching and the like are caused after film pasting, the production efficiency is greatly reduced, the production cost is increased, and even the whole batch of optical film is required to be scrapped when the optical film is seriously deformed. Therefore, we improve this and propose an optical film structure.

For example, chinese patent (publication No. CN 206946011U) discloses an optical film warping control device, and the specification discloses that the optical film is widely applied to the display industry due to excellent optical performance. During the production process of the optical film, the internal stress is unbalanced due to the reasons of additional coating, tension control, drying and other process treatments, so that the optical film is uneven, namely, warping phenomenon when being placed on a plane. The warping rejection rate of the optical film is high, and the warping generally occurs in batch, so that the production cost of enterprises is seriously increased. The above-mentioned patent may prove to be a drawback of the prior art.

Disclosure of utility model

The technical problem to be solved by the embodiment of the utility model is that when the optical film itself has serious warpage or deformation, the optical film cannot be completely absorbed by the platen, which causes the problems of air bubbles, deviation, even incapability of adhesion and the like after film adhesion.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The optical film structure comprises an optical film main body, wherein the optical film main body comprises an optical film part and an adhesive layer arranged on the optical film part, a leveling component is arranged on one side, far away from the adhesive layer, of the optical film part, the leveling component comprises a PET film OCA adhesive layer connected with the optical film part, one side, far away from the optical film part, of the PET film OCA adhesive layer is connected with a PET film layer, and the PET film layer is used for leveling the optical film part so as to realize leveling of the optical film main body.

As an improvement of the utility model, the external dimension of the leveling component is larger than the external dimension of the optical film main body.

As an improvement of the present utility model, the thickness and hardness of the leveling component are greater than those of the optical film body.

As an improvement of the utility model, the thickness of the leveling component is 0.3MM, and the thickness of the optical film main body is less than 0.1MM.

As an improvement mode of the utility model, the adhesive layer is an optical film OCA adhesive layer, and the optical film OCA adhesive layer is connected to one surface of the optical film part far away from the PET film OCA adhesive layer.

As an improvement mode of the utility model, one surface of the optical film OCA adhesive layer far away from the optical film part is connected with the optical film second release film, and the optical film second release film is used for protecting the optical film OCA adhesive layer.

As an improvement mode of the utility model, the optical film part comprises an optical film substrate connected with one surface of the optical film OCA adhesive layer, which is far away from the second release film of the optical film.

As an improvement mode of the utility model, one surface of the optical film substrate far away from the OCA adhesive layer of the optical film is connected with an optical film functional layer.

As an improvement mode of the utility model, one surface of the optical film functional layer far away from the optical film base material is connected with a first release film of the optical film, and the first release film of the optical film is attached to one surface of the PET film OCA adhesive layer far away from the PET film layer.

As an improvement mode of the utility model, the viscosity of the OCA adhesive layer of the PET film is smaller than that of the OCA adhesive layer of the optical film

Compared with the prior art, the embodiment of the utility model has the following main beneficial effects:

In order to solve the problems that when the optical film is severely warped or deformed, the optical film cannot be completely absorbed by a platen, bubbles, offset and the like can be generated after the film is adhered, even the optical film cannot be adhered, and the like in the prior art, the application adopts the leveling component, which comprises a PET film OCA adhesive layer connected with the optical film part, wherein the PET film OCA adhesive layer is connected with a PET film layer, and the PET film layer can be used for leveling the optical film part after the PET film layer is connected with the optical film part through the PET film OCA adhesive layer, so that the leveling of the optical film main body is realized.

Drawings

FIG. 1 is a schematic view of an optical film structure according to the present application;

FIG. 2 is a schematic view of an optical film body with an optical film structure according to the present application;

fig. 3 is a schematic structural diagram of a leveling component of the optical film structure according to the present application.

The figures indicate:

1. An optical film body; 101, an optical film first release film, 102, an optical film functional layer, 103, an optical film base material, 104, an optical film OCA adhesive layer, 105, an optical film second release film;

2. leveling component, 201, PET film layer, 202, PET film OCA glue layer.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used in the specification of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

As described in the background art, in the conventional film sticking process, the optical film is adsorbed on the platen by vacuum and then rolled and attached by using the machine roller, however, this process has a significant problem that when the optical film itself is severely warped or deformed, it cannot be completely absorbed by the platen, which results in problems such as air bubbles, misalignment, or even failure to attach after film sticking, thereby greatly reducing the production efficiency and increasing the production cost, and even requiring scrapping the whole batch of optical film in severe cases.

In order to solve the technical problem, the utility model provides an optical film structure.

Specifically, referring to fig. 1 to 3, the optical film structure specifically includes:

The optical film comprises an optical film body 1, wherein the optical film body 1 comprises an optical film part and an adhesive layer arranged on the optical film part, a leveling component 2 is arranged on one side, far away from the adhesive layer, of the optical film part, the leveling component 2 comprises a PET film OCA adhesive layer 202 connected with the optical film part, one side, far away from the optical film part, of the PET film OCA adhesive layer 202 is connected with a PET film layer 201, and the PET film layer 201 is used for leveling the optical film part so as to realize leveling of the optical film body 1.

According to the optical film structure, the leveling component 2 comprises the PET film OCA adhesive layer 202 connected with the optical film part, the PET film OCA adhesive layer 202 is connected with the PET film layer 201, after the PET film OCA adhesive layer 202 is used for connecting the PET film layer 201 with the optical film part, the PET film layer 201 can level the optical film part so as to level the optical film main body 1, namely, by pre-leveling the optical film main body 1, the bending condition of the optical film main body 1 is reduced, the problems of bubbles, deviation and the like after film pasting can be remarkably reduced, the film pasting quality and the product qualification rate are improved, the rejection rate of the optical film caused by film pasting failure is reduced, and the production cost is reduced.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example of the optical film structure of the utility model

Referring to fig. 1-3, the optical film structure of the present utility model includes an optical film main body 1, the optical film main body 1 includes an optical film portion and an adhesive layer disposed on the optical film portion, a leveling component 2 is disposed on a side of the optical film portion away from the adhesive layer, the leveling component 2 includes a PET film OCA adhesive layer 202 connected with the optical film portion, a PET film layer 201 is connected to a side of the PET film OCA adhesive layer 202 away from the optical film portion, and the PET film layer 201 is used for leveling the optical film portion, so as to achieve leveling of the optical film main body 1, that is, by leveling the optical film main body 1 in advance, bending of the optical film main body 1 is reduced, so that problems such as air bubbles and offset after film lamination can be significantly reduced, film laminating quality and product yield can be improved, and optical film rejection rate due to film lamination failure can be reduced, thereby reducing production cost.

Further, as shown in fig. 1, the external dimension of the leveling component 2 is larger than the external dimension of the optical film main body 1, so that the leveling component 2 can be separated from the optical film main body 1 conveniently after the optical film main body 1 is attached to a product.

Further, the thickness and hardness of the leveling component 2 are greater than those of the optical film body 1, so that the optical film body 1 can be leveled by the leveling component 2, so that the optical film body 1 is kept flat.

Further, the thickness of the leveling component 2 is 0.3MM, and the thickness of the optical film main body 1 is smaller than 0.1MM, and since the thickness of the leveling component 2 is larger than that of the optical film main body 1, the optical film can be leveled by the leveling component 2 after lamination, and when lamination, the optical film main body 1 is only required to be within the appearance of the leveling component 2, a small amount of small bubbles are allowed between the leveling component 2 and the optical film main body 1.

Further, as shown in fig. 1-2, the adhesive layer is an optical film OCA adhesive layer 104, the optical film OCA adhesive layer 104 is connected to one surface of the optical film portion far away from the PET film OCA adhesive layer 202, the OCA adhesive is a special adhesive for cementing transparent optical elements, and belongs to pressure-sensitive adhesives.

Further, as shown in fig. 1-2, the surface of the OCA layer 104 far away from the optical film portion is connected with a second release film 105, where the second release film 105 is used for protecting the OCA layer 104, so as to reduce the contamination of the OCA layer 104 with dust and other impurities before use, and the release film is a special film material with different surface energy, so that the release film has no or only slight viscosity after contacting with the specific material under limited conditions, and the release film is usually a film made by coating a silicone release agent on an environment-friendly material, so that the release film shows extremely light and stable release force on various organic pressure sensitive adhesives, such as hot melt adhesives, acrylic adhesives, pressure sensitive adhesives of rubber systems, and the like, and has the characteristics of high transparency, excellent heat resistance, electrical characteristics, chemical resistance, low density, good molding processability, good safety, and the like.

Example two of the optical film Structure of the present utility model

The optical film structure of the present utility model further includes, as shown in fig. 1-2, an optical film substrate 103 connected to a side of the optical film OCA layer 104 away from the second release film 105, where the optical film substrate 103 may be polyester PET, polycarbonate PC or polypropylene PP;

The PET substrate has good optical performance, mechanical performance and chemical stability, has higher transparency and weather resistance, and is suitable for various optical applications;

polycarbonate PC has excellent transparency, impact resistance and high temperature resistance, and the substrate is suitable for manufacturing optical films requiring high transparency and toughness;

Polypropylene PP has excellent chemical resistance and low moisture absorption, making it an ideal choice for certain special optical applications.

Further, as shown in fig. 1-2, an optical film functional layer 102 is connected to a surface of the optical film substrate 103 away from the optical film OCA adhesive layer 104, and the optical film functional layer 102 is an AR layer, an AG layer or an AF layer;

The AR layer, also called an anti-reflective coating or an anti-reflective coating, is an optical thin film coating, which is mainly used to reduce the reflectivity of light rays in a specific wavelength range on the surface due to fresnel reflection, thereby improving the light transmittance and the image clarity, and is widely used in the manufacture of optical devices;

The AG coating is also called an anti-dazzle coating or an anti-dazzle coating, is a nano-scale spraying liquid, is attached to the surface of a product by adopting a process such as nano shower coating or spraying, has the main functions of changing the reflective surface of original glass into a matte diffuse reflective surface, reducing glare and improving visual comfort, is mainly applied to various panels such as a liquid crystal screen, a television, a vehicle television eye protection sheet, a vehicle instrument panel, a camera lens and the like, and has the advantage of environmental protection, is harmless to human body contact, and the shower coating process does not produce waste liquid discharge;

The AF coating is mainly used for reducing marks left on the surface of a material by fingerprints and other stains, so that the surface is easier to clean and keep in a clean state, and the AF coating is used for improving the anti-fouling performance of the surface by reducing the friction coefficient of the surface and enhancing the hydrophobicity of the surface so that fingerprints, grease, water drops and the like are difficult to adhere to the surface.

Example III of the optical film Structure of the utility model

In the optical film structure of the present utility model, as shown in fig. 1-2, one side of the optical film functional layer 102 far away from the optical film substrate 103 is connected with the first release film 101 of the optical film, the first release film 101 of the optical film is attached to one side of the OCA adhesive layer 202 of the PET film far away from the PET film layer 201, and the arrangement of the first release film 101 of the optical film can reduce the scratch of the optical film functional layer 102 before the optical film functional layer is attached to the OCA adhesive layer 202 of the PET film.

Further, the viscosity of the OCA adhesive layer 202 of the PET film is less than that of the OCA adhesive layer 104 of the optical film, after the attachment, the first release film 101 of the optical film and the OCA adhesive layer 202 of the PET film can be easily separated, and the leveling component 2 can be reused.

When the PET film layer 201 is used, the PET film layer 201 is placed on a platen, the corners of the optical film are grasped by a camera to align, then the second release film 105 of the optical film is torn off, a cover plate is attached to the OCA adhesive layer 104 of the optical film, then rolling is performed through a roller, the OCA adhesive layer 104 of the optical film is attached to the cover plate, and after the attachment is completed, the OCA adhesive layer 202 of the PET film is separated from the first release film 101 of the optical film.

It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.

Claims

1. An optical film structure, characterized in that it comprises: an optical film body (1), the optical film body (1) comprising an optical film portion and an adhesive layer arranged on the optical film portion, a flattening component (2) being arranged on a side of the optical film portion away from the adhesive layer, the flattening component (2) comprising a PET film OCA adhesive layer (202) connected to the optical film portion, a side of the PET film OCA adhesive layer (202) away from the optical film portion being connected to a PET film layer (201), the PET film layer (201) being used to flatten the optical film portion, so as to achieve flatness of the optical film body (1).

2. The optical film structure according to claim 1, characterized in that the outer dimensions of the flattening component (2) are larger than the outer dimensions of the optical film body (1).

3. The optical film structure according to claim 2, characterized in that the thickness and hardness of the flattening component (2) are greater than the thickness and hardness of the optical film body (1).

4. The optical film structure according to claim 3, characterized in that the thickness of the flattening component (2) is 0.3 mm, and the thickness of the optical film body (1) is less than 0.1 mm.

5. The optical film structure according to claim 4, characterized in that the adhesive layer is an optical film OCA adhesive layer (104), and the optical film OCA adhesive layer (104) is connected to a side of the optical film portion away from the PET film OCA adhesive layer (202).

6. The optical film structure according to claim 5, characterized in that a side of the optical film OCA adhesive layer (104) away from the optical film portion is connected to an optical film second release film (105), and the optical film second release film (105) is used to protect the optical film OCA adhesive layer (104).

7. The optical film structure according to claim 6, characterized in that the optical film portion comprises an optical film substrate (103) connected to a side of the optical film OCA adhesive layer (104) away from the second release film (105) of the optical film.

8. The optical film structure according to claim 7, characterized in that the optical film substrate (103) is connected to a surface thereof away from the optical film OCA adhesive layer (104) with an optical film functional layer (102).

9. The optical film structure according to claim 8, characterized in that a side of the optical film functional layer (102) away from the optical film substrate (103) is connected to a first optical film release film (101), and the first optical film release film (101) is bonded to a side of the PET film OCA adhesive layer (202) away from the PET film layer (201).

10. The optical film structure according to claim 9, characterized in that the viscosity of the PET film OCA adhesive layer (202) is lower than the viscosity of the optical film OCA adhesive layer (104).