Anti-tear optical film

Abstract

The utility model discloses an anti-tearing optical film which comprises a base layer. The functional layers are arranged at the upper end and the lower end of the base layer, and the functional layers are connected with the base layer through hot pressing; the protective layer is arranged outside the functional layer, the protective layer and the functional layer are connected through hot pressing, an anti-tearing layer is arranged in the middle of the interior of the protective layer, and the structure solves the problems that the optical film is prone to being damaged, and the electrostatic protection performance is poor when the optical film is directly used.

Description

Technical Field

[0001] The utility model relates to the technical field of optical films, in particular to a tear-resistant optical film. Background Art

[0002] Optical film refers to the process of plating or coating one or more dielectric films or metal films or a combination of these two films on an optical element or an independent substrate to change the transmission characteristics of light waves, including light projection, reflection, absorption, scattering, polarization and phase change. It can make light in different polarization planes have different characteristics by modulating the transmittance and reflectivity of the surface in different wavelength bands. According to different functions, optical films can be divided into reflective films, polarizers, diffusion films, brightening films and filters, etc. In terms of application fields, optical films are widely used in electronic display screens and flat-screen TVs in the electronics industry to provide clearer and brighter image effects. They can also be used to make solar cells, lasers and optoelectronic devices, etc. In the automotive industry, optical films are used for anti-glare mirrors, rearview mirrors, car windows and car headlights to improve driving safety; in the construction industry, optical films can be used for windows, glass curtain walls and roofs to control indoor temperature, insulate, and block the transmission of ultraviolet rays and visible light; in the communications industry, optical films are used to manufacture optical fibers, optical filters and optical devices to increase data transmission speeds, among which tear prevention is an important function of optical films.

[0003] For example, the Chinese patent "An Optical Film" with announcement number CN206020703U includes a first optical film and a second optical film, wherein the first optical film includes a substrate layer, a prism layer, and an adhesive layer, wherein the prism layer includes a plurality of prism structures, wherein at least one of the prism structures has a first ridge and a second ridge, and the first ridge and the second ridge form a groove; the adhesive layer fills the groove; the first optical film is bonded to the second optical film through the adhesive layer, and the adhesive layer is at the same height as the first ridge and the second ridge, or protrudes from the plane connecting the first ridge and the second ridge, the material refractive index of the prism structure is n1, wherein n1 is 1.47 to 1.67, and n2 is 1.35 to 1.62, and the prism layer includes a first prism structure and a second prism structure. The present invention relates to a prism structure, wherein the first prism structure has a first ridge and a second ridge, the second prism structure has a single ridge, any number of second prism structures are spaced between the first prism structures, the first prism structure and the second prism structure are arranged alternately, the spacing between the first ridge and the second ridge is 5 to 15 microns, preferably 7 to 10 microns, the groove depth is 2 to 10 microns, preferably 5 to 8 microns, the adhesive layer is selected from a pressure-sensitive adhesive, a heat-curing adhesive, a UV-curing adhesive, a UV / heat-curing combination adhesive, an optically transparent adhesive, an optically transparent gel, or a room temperature-curing adhesive, the first optical film substrate also has a diffusion coating on the side opposite to the prism layer, and the second optical film can be selected from a brightness enhancement film, a diffusion film, a cylindrical film, a microlens film, and a polarizing film.

[0004] Although the above-mentioned existing technology can realize the use of optical films, in actual use, on the one hand, the optical film is susceptible to damage. During the use of the optical film, it is directly exposed to the operating environment, which makes the optical film prone to tearing, thereby reducing the service life of the optical film. On the other hand, the direct use of the optical film has poor electrostatic protection. During the use of the optical film, static electricity may be generated due to friction and other reasons, resulting in sparks generated by electrostatic discharge that may damage the performance of the optical film. Therefore, it does not meet the existing needs. In this regard, we propose a tear-resistant optical film. Utility Model Content

[0005] The utility model aims to provide a tear-resistant optical film to solve the problems in the above background technology that the optical film is easily damaged and the optical film has poor electrostatic protection when used directly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-tear optical film, comprising a base layer; and further comprising:

[0007] A functional layer is disposed at the upper and lower ends of the base layer, and the functional layer and the base layer are connected by hot pressing;

[0008] The protective layer is arranged outside the functional layer, and the protective layer and the functional layer are connected by hot pressing. An anti-tearing layer is arranged at the middle position inside the protective layer.

[0009] Preferably, a wear-resistant layer is provided on the upper end of the tear-proof layer, and the wear-resistant layer and the tear-proof layer are connected by hot pressing.

[0010] Preferably, an anti-bending layer is provided at the lower end of the anti-tear layer, and the anti-bending layer and the anti-tear layer are connected by hot pressing.

[0011] Preferably, a light-transmitting layer is provided at a middle position inside the functional layer.

[0012] Preferably, an antistatic layer is provided on the upper end of the light-transmitting layer, and the antistatic layer and the light-transmitting layer are connected by heat pressing.

[0013] Preferably, an anti-blue light layer is provided at the lower end of the light-transmitting layer, and the anti-blue light layer and the light-transmitting layer are connected by heat pressing.

[0014] Preferably, anti-cracking fibers are arranged inside the anti-cracking layer, and the anti-cracking fibers are woven alternately in an oblique direction.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can protect the surface of the optical film by providing a protective layer. The optical film can protect against scratches that occur during daily use through the outermost wear-resistant layer to avoid scratches on the surface of the optical film, thereby preventing the light transmittance of the optical film from decreasing. Secondly, the anti-tear layer can make the optical film resist external pulling, reducing the risk of the optical film being torn by external forces during use or transportation, thereby extending the service life of the optical film. Finally, the anti-bending layer can enhance the anti-bending ability of the optical film. After the optical film is used and fixed, it can remain flat under the action of external forces, thereby avoiding the degradation of the optical performance of the optical film due to bending and the image distortion and uneven brightness of the display device.

[0017] 2. The utility model can increase the functionality of the optical film by providing a functional layer. The antistatic layer can improve the antistatic performance of the optical film during use of the optical film, prevent static electricity generated by friction from causing damage to the optical film, and reduce the adhesion of dust caused by static electricity, thereby improving the light transmittance of the optical film. Secondly, the light transmittance of the optical film can be increased by the light-transmitting layer, so that the image on the display device is clearer and brighter. Finally, the anti-blue light layer can improve the color reproduction and contrast of the picture, making the image clearer and more natural.

[0018] 3. The utility model can improve the ductility of the optical film by providing anti-cracking fibers. The anti-cracking fibers are alternately woven diagonally to make the anti-tear layer have higher strength and flexibility, and are more tear-resistant than plain weave, thereby improving the tear resistance of the optical film. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic diagram of the internal structure of the utility model;

[0020] Figure 2 This is a partial enlarged view of the protective layer structure of the utility model;

[0021] Figure 3 It is a partial enlarged view of the functional layer structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the weaving structure of the tear-resistant layer of the utility model.

[0023] In the figure: 1. base layer; 2. functional layer; 3. protective layer; 201. anti-static layer; 202. light-transmitting layer; 203. anti-blue light layer; 301. wear-resistant layer; 302. anti-tear layer; 303. anti-bending layer; 4. anti-cracking fiber. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a tear-resistant optical film, including a base layer 1; and also including:

[0026] The functional layer 2 is arranged at the upper and lower ends of the base layer 1, and the functional layer 2 is connected to the base layer 1 by hot pressing;

[0027] The protective layer 3 is arranged outside the functional layer 2, and the protective layer 3 and the functional layer 2 are connected by hot pressing. An anti-tear layer 302 is arranged at the middle position inside the protective layer 3, wherein the anti-tear layer 302 is filled with anti-cracking fibers 4.

[0028] During use, the optical film is protected against scratches that occur during daily use through the outermost wear-resistant layer 301, thereby preventing scratches from forming on the surface of the optical film, thereby preventing the light transmittance of the optical film from decreasing; secondly, the anti-tear layer 302 can make the optical film resistant to external pulling, thereby reducing the risk of the optical film being torn by external forces during use or transportation, thereby extending the service life of the optical film; finally, the anti-bending layer 303 can enhance the anti-bending ability of the optical film, and the optical film can remain flat under the action of external forces after being fixed in use, thereby avoiding the degradation of the optical performance of the optical film due to bending and the image distortion and uneven brightness of the display device.

[0029] See also Figure 2 A wear-resistant layer 301 is provided on the upper end of the tear-proof layer 302, and the wear-resistant layer 301 is connected to the tear-proof layer 302 by hot pressing, wherein the wear-resistant layer 301 is made of glass fiber, so that the wear-resistant layer 301 can prevent scratches from forming on the surface of the optical film.

[0030] See also Figure 2 An anti-bending layer 303 is provided at the lower end of the anti-tear layer 302, and the anti-bending layer 303 is connected to the anti-tear layer 302 by hot pressing, wherein the anti-bending layer 303 is an ethylene-polytetrafluoroethylene copolymer coating, which facilitates improving the anti-bending ability of the optical film through the anti-bending layer 303.

[0031] See also Figure 1 and Figure 3 A light-transmitting layer 202 is arranged at the middle position inside the functional layer 2, so as to increase the light transmittance of the optical film through the light-transmitting layer 202, wherein the light-transmitting layer 202 is filled with graphene, thereby making the image on the display device clearer and brighter.

[0032] See also Figure 3 An antistatic layer 201 is provided on the upper end of the light-transmitting layer 202, and the antistatic layer 201 is connected to the light-transmitting layer 202 by hot pressing, wherein the antistatic layer 201 is made of epoxy resin, which can prevent static electricity generated by friction from damaging the optical film and reduce dust adhesion caused by static electricity.

[0033] See also Figure 3 An anti-blue light layer 203 is provided at the lower end of the light-transmitting layer 202, and the anti-blue light layer 203 is connected to the light-transmitting layer 202 by hot pressing, wherein the anti-blue light layer 203 is an anti-blue light paint, which facilitates improving the color reproduction and contrast of the picture through the anti-blue light layer 203.

[0034] See also Figure 1 and Figure 4The tear-proof layer 302 is provided with anti-cracking fibers 4 inside, and the anti-cracking fibers 4 are woven alternately in an oblique direction, so that the tear-proof layer 302 has better toughness through the oblique alternating weaving of the anti-cracking fibers 4.

[0035] Working principle: During the use of the optical film, the antistatic layer 201 can improve the antistatic performance of the optical film, prevent static electricity generated by friction from causing damage to the optical film, and reduce the adhesion of dust caused by static electricity, thereby improving the light transmittance of the optical film. Secondly, the light transmittance of the optical film can be increased by the light-transmitting layer 202, so that the image on the display device is clearer and brighter. Finally, the anti-blue light layer 203 can enhance the color reproduction and contrast of the picture, making the image clearer and more natural. The anti-cracking fibers 4 are alternately woven diagonally to make the anti-tear layer 302 have higher strength and flexibility, and are more tear-resistant than plain weave, thereby improving the tear resistance of the optical film.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A tear-resistant optical film, comprising a base layer (1); Features: Also includes: A functional layer (2) is arranged at the upper and lower ends of the base layer (1), and the functional layer (2) and the base layer (1) are connected by hot pressing; The protective layer (3) is arranged outside the functional layer (2), and the protective layer (3) and the functional layer (2) are connected by hot pressing. An anti-tear layer (302) is arranged at a middle position inside the protective layer (3).

2. The tear-resistant optical film according to claim 1, characterized in that: A wear-resistant layer (301) is provided on the upper end of the tear-resistant layer (302), and the wear-resistant layer (301) and the tear-resistant layer (302) are connected by hot pressing.

3. The tear-resistant optical film according to claim 1, characterized in that: An anti-bending layer (303) is provided at the lower end of the anti-tear layer (302), and the anti-bending layer (303) and the anti-tear layer (302) are connected by hot pressing.

4. The tear-resistant optical film according to claim 1, characterized in that: A light-transmitting layer (202) is provided at a middle position inside the functional layer (2).

5. The tear-resistant optical film according to claim 4, characterized in that: An antistatic layer (201) is provided on the upper end of the light-transmitting layer (202), and the antistatic layer (201) and the light-transmitting layer (202) are connected by heat pressing.

6. The tear-resistant optical film according to claim 4, characterized in that: A blue light protection layer (203) is provided at the lower end of the light-transmitting layer (202), and the blue light protection layer (203) and the light-transmitting layer (202) are connected by heat pressing.

7. The tear-resistant optical film according to claim 1, characterized in that: The tear-proof layer (302) is provided with anti-cracking fibers (4) inside, and the anti-cracking fibers (4) are woven alternately in an oblique direction.

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