Protective film structure of touch screen

Abstract

The utility model relates to a protective film structure of a touch screen. The protective film structure of the touch screen comprises an anti-UV film, a PET protective film and a release film, a clearance hole is formed in the anti-UV film, the PET protective film is arranged on the anti-UV film, and the clearance hole is used for partially exposing the PET protective film; and the release film is arranged on the PET protective film. According to the scheme provided by the invention, the ink can be protected from being polluted by glue, and the ink can also be protected from being irradiated by UV light.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a protective film structure for a touch screen. Background Art

[0002] At present, there are two types of bonding adhesives for touch screens, namely OCA and OCR. Among them, OCR is a liquid adhesive, and OCA is a solid optical adhesive. During bonding, the liquid adhesive will more or less overflow from the edge of the display screen, and the overflowed adhesive needs to be scraped and wiped manually. However, during the scraping and wiping process, the glue is very easy to contaminate the ink on the cover plate, resulting in a decrease in the dyne value of the ink. In addition, during the process of photocuring the liquid glue, the UV light irradiating the ink on the cover plate will also cause a decrease in the dyne value of the ink. Therefore, at this stage, there is an urgent need for a protective film that can protect the ink from being contaminated by glue and also protect the ink from being irradiated by UV light. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a protective film structure for a touch screen, which can protect the ink from being contaminated by glue and also protect the ink from being irradiated by UV light.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A protective film structure for a touch screen is provided in the first aspect of the present application, including: an anti-UV film, with an avoidance hole formed on the anti-UV film; a PET protective film, the PET protective film is disposed on the anti-UV film, and the avoidance hole is used to expose a part of the PET protective film; a release film, the release film is disposed on the PET protective film.

[0006] It further includes a semi-cutting line, and the semi-cutting line is disposed on the PET protective film.

[0007] The length of the release film is greater than the length of the PET protective film.

[0008] The thickness range of the anti-UV film is 0.03 mm to 0.25 mm.

[0009] The thickness range of the PET protective film is 0.03 mm to 0.25 mm.

[0010] A first adhesive layer is disposed on the anti-UV film, and the first adhesive layer adheres to the PET protective film.

[0011] A second adhesive layer is disposed on the PET protective film, and the second adhesive layer adheres to the release film.

[0012] The length of the anti-UV film is the same as the length of the PET protective film.

[0013] The length of the first adhesive layer is the same as the length of the anti-UV film.

[0014] The length of the second adhesive layer is the same as the length of the PET protective film.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The anti-UV film is located at the uppermost layer, and its function is to block UV light from penetrating the protective film and irradiating the cover plate ink. The PET protective film is located below the anti-UV film, and it is used to prevent the glue overflowing from the display screen from contacting the cover plate ink, thereby protecting the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic structural diagram of the protective film structure of the touch screen in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of another implementation manner of the protective film structure of the touch screen in an embodiment of the present utility model;

[0020] Figure 3 It is a schematic structural diagram after the protective film structure of the touch screen in an embodiment of the present utility model is attached. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0022] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0023] Unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] During the processes of spreading glue and rubbing glue, the glue is very likely to contaminate the ink on the cover plate, resulting in a decrease in the dyne value of the ink. In addition, during the process of photocuring the liquid glue, the UV light irradiating the ink on the cover plate will also cause a decrease in the dyne value of the ink. Therefore, at the present stage, there is an urgent need for a protective film that can protect the ink from being contaminated by the glue and also protect the ink from being irradiated by UV light.

[0025] In view of the above problems, the embodiment of this application provides a protective film structure for a touch screen, which can protect the ink from being contaminated by the glue and also protect the ink from being irradiated by UV light.

[0026] The technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3 , a protective film structure for a touch screen, including: an anti-UV film 100, a PET protective film 200 and a release film 300. An avoidance hole 110 is formed on the anti-UV film 100. The PET protective film 200 is disposed on the anti-UV film 100, and the avoidance hole 110 is used to partially expose the PET protective film 200; the release film 300 is disposed on the PET protective film 200.

[0028] Specifically, the protective film structure for the touch screen further includes a semi-cutting line 400, and the semi-cutting line 400 is disposed on the PET protective film 200.

[0029] It should be noted that the function of the avoidance hole 110 is to prevent the anti-UV film 100 from blocking the viewing area of the cover plate, because the anti-UV film 100 is usually black, while the PET protective film is a transparent protective film. During lamination, the protective film structure is first attached to the back of the cover plate as a whole, and then the inner film of the semi-cutting line 400 is torn off, leaving the outer anti-UV film 100 to protect the ink area of the cover plate. Then, the cover plate with the film attached and the display screen with glue applied are laminated together. The glue line overflowing from the display screen contacts the PET protective film 200 instead of the ink area. And when photocuring the liquid glue with UV light, the UV light cannot irradiate the ink area either.

[0030] Please refer to Figure 1, in one embodiment, the length of the release film 300 is greater than the length of the PET protective film 200.

[0031] It should be noted that before being attached to the cover plate, the release film 300 needs to be torn off. The release film 300 is used to protect the adhesiveness of the PET protective film 200, so the length of the release film 300 is greater than the length of the PET protective film 200.

[0032] Please refer to Figure 1 , in one embodiment, the thickness range of the anti-UV film 100 is 0.03 mm to 0.25 mm. Specifically, a first adhesive layer 120 is provided on the anti-UV film 100, and the first adhesive layer 120 adheres to the PET protective film 200.

[0033] It should be noted that the anti-UV film 100 is single-sidedly coated with glue, that is, the first adhesive layer 120, which faces the PET protective film 200. The thickness is usually between 0.03 mm and 0.25 mm. The anti-UV film 100 can be applied within this range of thickness without affecting its effect.

[0034] Please refer to Figure 1 , in one embodiment, the thickness range of the PET protective film 200 is 0.03 mm to 0.25 mm. Specifically, a second adhesive layer 210 is provided on the PET protective film 200, and the second adhesive layer 210 adheres to the release film 300.

[0035] It should be noted that the adhesiveness of the second adhesive layer 210 is weak and faces the ink area of the cover plate. Its thickness is between 0.03 mm and 0.25 mm. The PET protective film 200 can be applied within this range of thickness without affecting its effect.

[0036] Please refer to Figure 1 , in one embodiment, the length of the anti-UV film 100 is the same as the length of the PET protective film 200. Specifically, the length of the first adhesive layer 120 is the same as the length of the anti-UV film 100. Specifically, the length of the second adhesive layer 210 is the same as the length of the PET protective film 200.

[0037] It should be noted that in order to ensure the uniformity of the adhesiveness of the anti-UV film 100 and the PET protective film 200, the length of the first adhesive layer 120 is the same as the length of the anti-UV film 100, and the length of the second adhesive layer 210 is the same as the length of the PET protective film 200.

[0038] The solution of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to the present application. Additionally, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0039] The various embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technologies in the market, or to enable other ordinary skill in the art in the technical field to understand the embodiments disclosed herein.

Claims

1. A protective film structure for a touch screen, characterized in that: include: An anti-UV film, wherein the anti-UV film is provided with air holes; A PET protective film, wherein the PET protective film is disposed on the anti-UV film, and the air-avoiding hole is used to partially expose the PET protective film; A release film is disposed on the PET protective film.

2. The protective film structure of the touch screen according to claim 1, characterized in that: It also includes a half-punching line, which is arranged on the PET protective film.

3. The protective film structure of the touch screen according to claim 1, characterized in that: The length of the release film is greater than the length of the PET protective film.

4. The protective film structure of the touch screen according to claim 1, characterized in that: The thickness of the anti-UV film ranges from 0.03 mm to 0.25 mm.

5. The protective film structure of the touch screen according to claim 1, characterized in that: The thickness of the PET protective film ranges from 0.03 mm to 0.25 mm.

6. The protective film structure of the touch screen according to claim 1, characterized in that: A first adhesive layer is arranged on the anti-UV film, and the first adhesive layer is adhered to the PET protective film.

7. The protective film structure of the touch screen according to claim 1, characterized in that: A second adhesive layer is arranged on the PET protective film, and the second adhesive layer adheres to the release film.

8. The protective film structure of the touch screen according to claim 1, characterized in that: The length of the anti-UV film is the same as that of the PET protective film.

9. The protective film structure of the touch screen according to claim 6, characterized in that: The length of the first adhesive layer is the same as that of the anti-UV film.

10. The protective film structure of the touch screen according to claim 7, characterized in that: The length of the second adhesive layer is the same as that of the PET protective film.

Images