Toughened glass film of folding screen

By introducing a combination of a flexible buffer layer, a wear-resistant strengthening layer, a bonding layer, and a high-transparency optical layer into the tempered glass film, the problems of poor scratch and wear resistance and air bubbles during application of existing tempered glass films are solved, resulting in better screen protection and display effects.

CN224152679UActive Publication Date: 2026-04-21DONG GUAN JIAYI OPTOELECTRONIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONG GUAN JIAYI OPTOELECTRONIC CO LTD
Filing Date
2025-06-06
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing foldable tempered glass screen protectors are made of thinner material, resulting in reduced scratch and wear resistance. They cannot effectively protect the screen from scratches and damage, and it is difficult to completely eliminate air bubbles when they are applied to foldable screens, affecting the display effect.

Method used

The design employs a combination of a flexible buffer layer, a wear-resistant reinforcement layer, a bonding layer, and an optically high-transparency layer. The flexible buffer layer is composed of an ultra-thin polyurethane film, the wear-resistant reinforcement layer is composed of a polyethylene terephthalate film and a nano-ceramic particle coating, the bonding layer is composed of an OCA silicone layer, and the optically high-transparency layer is composed of a PET-type optical film coating, which enhances adhesion and display effect.

Benefits of technology

It improves the wear resistance of tempered glass, reduces bubble formation, enhances adhesion, improves display effect, and extends service life and bending life, effectively protecting the screen.

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Abstract

The utility model discloses a folding screen toughened glass film, which belongs to the technical field of toughened glass films, and is characterized by comprising a toughened glass film main body, the toughened glass film main body comprises a flexible buffer layer, a toughened glass layer is arranged at the top of the flexible buffer layer, a wear-resistant reinforced layer is arranged at the top of the toughened glass layer, and the wear-resistant reinforced layer is arranged at the bottom of the flexible buffer layer. A connecting layer is arranged at the bottom of the flexible buffer layer, and an optical high-transmittance layer is arranged between the opposite sides of the connecting layer and the flexible buffer layer, by arranging the wear-resistant reinforcing layer and the flexible buffer layer, good wear resistance and buffer performance can be provided for the tempered film main body, the surface hardness of the tempered film main body can be improved, the scratch resistance and wear resistance can be enhanced, and the service life of the tempered film main body can be prolonged. The service life is prolonged, stress can be effectively absorbed when the folding screen is folded, and the tempered glass layer is prevented from being broken due to stress concentration.
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Description

Technical Field

[0001] This utility model relates to the field of tempered glass film technology, and in particular to a tempered glass film for foldable screens. Background Technology

[0002] Mobile smart terminals have gradually become one of the daily necessities of people's lives. In order to improve the consumer experience of mobile smart terminals, mobile smart terminals with foldable screens that can change the size of the display area have also emerged.

[0003] With the increasing popularity of foldable screen electronic devices, the demand for screen protectors is also growing. While some existing foldable tempered glass screen protectors can withstand folding to a certain extent, they often use thinner glass materials, resulting in a decrease in overall scratch and wear resistance. They cannot effectively protect the screen from scratches and damage during daily use. Furthermore, when existing tempered glass screen protectors are applied to foldable screens, it is difficult to completely eliminate air bubbles, affecting the screen display effect and user experience.

[0004] To address this, a tempered glass film for foldable screens is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a tempered glass screen protector for foldable screens, which can solve the problems of existing tempered glass screen protectors, which, although they can withstand folding to a certain extent, often use thinner glass materials, resulting in a decrease in overall scratch and wear resistance and failing to effectively protect the screen from scratches and damage during daily use. Furthermore, existing tempered glass screen protectors are difficult to completely eliminate air bubbles when applied to foldable screens, affecting the screen display effect and user experience.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a foldable tempered glass film, comprising a tempered film body, the tempered film body comprising a flexible buffer layer, a tempered glass layer disposed on top of the flexible buffer layer, a wear-resistant strengthening layer disposed on top of the tempered glass layer, a connecting layer disposed at the bottom of the flexible buffer layer, and an optically high-transmittance layer disposed between the connecting layer and the opposite side of the flexible buffer layer.

[0007] Preferably, the flexible buffer layer is composed of an ultra-thin polyurethane film with a thickness of 0.02-0.05 mm.

[0008] Preferably, the wear-resistant reinforcing layer is composed of a polyethylene terephthalate film with a thickness of 0.1-0.15 mm.

[0009] Preferably, the top of the wear-resistant reinforcement layer is provided with a wear-resistant coating, and the wear-resistant coating is composed of a nano-ceramic particle coating.

[0010] Preferably, the connecting layer is composed of an OCA silicone layer.

[0011] Preferably, the high-transmittance optical layer is composed of a PET-type optical thin film coating.

[0012] Preferably, a release film is provided at the bottom of the bonding layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting a wear-resistant reinforcing layer and a flexible buffer layer, this application can provide good wear resistance and buffer performance for the tempered glass body. It can not only improve the surface hardness of the tempered glass body, enhance scratch resistance and wear resistance, and extend service life, but also effectively absorb stress when the folding screen is folded, preventing the tempered glass layer from cracking due to stress concentration.

[0015] 2. This application incorporates a bonding layer and an optical high-transparency layer. The bonding layer enhances the adhesion between the film and the foldable screen, allowing the tempered glass film to adhere more firmly to the screen, reducing the formation of air bubbles, and providing some shock absorption to effectively reduce damage to the phone screen from external impacts. The optical high-transparency layer enhances the bending performance of the tempered glass film, extends its bending life, reduces the impact of internal stress on the film, and also improves the display effect of the tempered glass film. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the foldable tempered glass film of this utility model;

[0017] Figure 2 This is an exploded view of the tempered glass film body of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the wear-resistant reinforcing layer of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the connecting layer of this utility model.

[0020] In the diagram, 1 is the tempered glass film body; 2 is the flexible buffer layer; 3 is the tempered glass layer; 4 is the wear-resistant strengthening layer; 5 is the bonding layer; and 6 is the optical high-transparency layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4The present invention provides the following technical solution:

[0023] A foldable tempered glass screen protector includes a tempered glass screen protector body 1, which includes a flexible buffer layer 2. A tempered glass layer 3 is disposed on the top of the flexible buffer layer 2, and a wear-resistant strengthening layer 4 is disposed on the top of the tempered glass layer 3. A connecting layer 5 is disposed on the bottom of the flexible buffer layer 2, and an optical high-transmittance layer 6 is disposed between the connecting layer 5 and the opposite side of the flexible buffer layer 2.

[0024] In this embodiment: by setting the wear-resistant reinforcing layer 4 and the flexible buffer layer 2, the tempered glass film body 1 can be provided with good wear resistance and buffer performance. This not only improves the surface hardness of the tempered glass film body 1, enhances its scratch and wear resistance, and extends its service life, but also effectively absorbs stress when the folding screen is folded, preventing the tempered glass layer 3 from cracking due to stress concentration. By setting the connecting layer 5 and the optical high-transparency layer 6, the connecting layer 5 can enhance the adhesion between the film and the folding screen, making the tempered glass film body 1 more firmly attached to the screen, reducing the generation of air bubbles, and having a certain shock absorption capacity, which can effectively reduce the damage of external impacts to the mobile phone screen. The optical high-transparency layer 6 can enhance the bending performance of the tempered glass film body 1, extend its bending life, reduce the impact of internal stress on the film, and also improve the display effect of the tempered glass film body 1.

[0025] Specifically, such as Figure 2 As shown, the flexible buffer layer 2 is composed of an ultra-thin polyurethane film with a thickness of 0.02-0.05 mm.

[0026] Specifically, such as Figure 2 As shown, the wear-resistant reinforcing layer 4 is composed of a polyethylene terephthalate film with a thickness of 0.1-0.15 mm.

[0027] Specifically, such as Figure 2 , Figure 3 As shown, the top of the wear-resistant reinforcement layer 4 is provided with a wear-resistant coating, and the wear-resistant coating is composed of a nano-ceramic particle coating.

[0028] In this embodiment: the flexible buffer layer 2 is made of an ultra-thin polyurethane film. The polyurethane film has good flexibility and buffering performance, which can effectively absorb stress when the folding screen is folded, preventing the tempered glass layer 3 from cracking due to stress concentration; the wear-resistant strengthening layer 4 is made of polyethylene terephthalate film, and a wear-resistant coating is provided on its top. The polyethylene terephthalate film has good transparency and mechanical properties, and the wear-resistant coating can further improve the surface hardness of the tempered glass film, enhance scratch resistance and wear resistance, and extend its service life.

[0029] Specifically, such as Figure 2 As shown, the connecting layer 5 is composed of an OCA silicone layer.

[0030] Specifically, such as Figure 2 As shown, the high-transmittance optical layer 6 is composed of a PET-type optical thin film coating.

[0031] In this embodiment: the connecting layer 5 is composed of an OCA silicone layer. The properties of silicone give it a certain shock absorption capacity when it is impacted, which can effectively reduce the damage of external impact to the mobile phone screen; while the optical high transmittance layer 6 is composed of a PET type optical thin film coating, which can enhance the bending performance of the tempered film body 1, extend the bending life, reduce the impact of internal stress on the film, and also improve the display effect of the tempered film body 1.

[0032] Specifically, such as Figure 4 As shown, a release film is provided at the bottom of the connecting layer 5.

[0033] In this embodiment: by setting a release film, the tempered film body 1 can protect the bonding layer 5 when it is not in use, and prevent it from being damaged.

[0034] Working principle: When using the tempered glass screen protector body 1, the release film is peeled off, and the screen is adhered to the folding screen through the bonding layer 5. The bonding layer 5 not only enhances the adhesion between the film and the folding screen, making the tempered glass screen protector body 1 more firmly attached to the screen and reducing the generation of air bubbles, but also has a certain shock absorption capacity, which can effectively reduce the damage to the mobile phone screen from external impacts. The optical high-transparency layer 6 can enhance the bending performance of the tempered glass screen protector body 1, extend its bending life, reduce the impact of internal stress on the film, and also improve the display effect of the tempered glass screen protector body 1. By setting the wear-resistant reinforcement layer 4 and the flexible buffer layer 2, the tempered glass screen protector body 1 can be provided with good wear resistance and buffer performance. This not only improves the surface hardness of the tempered glass screen protector body 1, enhances its scratch and wear resistance, and extends its service life, but also effectively absorbs stress when the folding screen is folded, preventing the tempered glass layer 3 from cracking due to stress concentration.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding screen tempered glass film comprising a tempered film main body (1), characterized in that: The tempered film body (1) includes a flexible buffer layer (2), a tempered glass layer (3) is provided on the top of the flexible buffer layer (2), a wear-resistant strengthening layer (4) is provided on the top of the tempered glass layer (3), a connecting layer (5) is provided at the bottom of the flexible buffer layer (2), and an optical high-transmittance layer (6) is provided between the connecting layer (5) and the opposite side of the flexible buffer layer (2).

2. The folding screen tempered glass film according to claim 1, characterized in that: The flexible buffer layer (2) is made of an ultra-thin polyurethane film with a thickness of 0.02-0.05 mm.

3. The folding screen tempered glass film according to claim 1, characterized in that: The wear-resistant reinforcing layer (4) is composed of a polyethylene terephthalate film with a thickness of 0.1-0.15 mm.

4. The folding screen tempered glass film according to claim 1, characterized in that: The wear-resistant strengthening layer (4) is provided with a wear-resistant coating on its top, and the wear-resistant coating is composed of nano-ceramic particle coating.

5. The folding screen tempered glass film according to claim 1, characterized in that: The connecting layer (5) is composed of an OCA silicone layer.

6. The folding screen tempered glass film according to claim 1, characterized in that: The high-transmittance optical layer (6) is composed of a PET-type optical thin film coating.

7. The folding screen tempered glass film according to claim 1, characterized in that: A release film is provided at the bottom of the connecting layer (5).