Reusable protective tempered glass for touch and non touch screens of electronic devices

Abstract

With present invention, as disclosed in U.S. Provisional Patent Application No. 63/350,647 filed on Jun. 9, 2022, we describe a new tempered glass for touch and non-touch screens. Unlike existing protecting films, our development offers increased flexibility, reusability, and an easier application process. The advantages described above result in the reduction of the tedious work associated with the installation of a screen protector. Thus, allowing the users of the electronic devices the opportunity to install them themselves without the help of third parties. Our newly developed film includes a protective film, a tempered glass screen protector with electroplating AF coating, an adhesive layer, and a release liner. It also includes specially made stickers to clean the surface before application and the adhesive layer of the protector for re-application. The proposed protector can also be cleaned using regular soap, water, paper, or a towel cloth to remove dust and be re-utilized.

Claims

1. The reusable tempered glass protector for touch or non-touch screens comprises: A tempered glass layer, an electroplating AF Coating over the tempered glass layer, an adhesive layer over the other side of the tempered glass layer, a release protective liner over the adhesive layer, and a final protective film layer.

2. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, makes it able to be cleaned and reused several times.

3. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, makes it able to be installed in a device with certain scratches by filling them to avoid bubble formation between the device and the tempered glass protector.

4. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, makes it able to be reinstalled for convenience.

5. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, makes it able to be removed from a device and installed in a different one, thus, reducing costs.

6. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, makes it able to be installed even with certain particles of dust on the surface. The adhesive absorbs these particles and makes them almost not noticeable, avoiding obstruction of the view area in the display.

7. The adhesive used in the manufacturing process of the reusable tempered glass protector, as stated in claim 1, is made of one layer of PET substrate, one layer of acrylic PSA, and one layer of silicone PSA, allowing it to be firmly fixed to the screen of the device but also to be easily removed or transferred.

8. The electroplating AF coating in the reusable tempered glass protector, as stated in claim 1, avoids fingerprints or any other marks on the surface of the protector. Also, it allows easy displacement of the finger when the protector is applied to a device's touch screen.

9. The adhesive and tempered glass used in the reusable glass protector's manufacturing process of the reusable tempered glass protector, as stated in claim 1, allows for a light transmittance of over 90%, a Haze under 1.6%, and a yellow index under 0.5%.

10. As stated in claim 1, the reusable tempered glass protector includes a cleaning kit that facilitates dry cleaning and, thus, an easy installation or reinstallation when needed.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0014] FIG. 1.—Structure of the Tempered Glass Protector.

[0015] FIG. 2.—Adhesive Structure.

[0016] FIG. 3.—Different Models of the Tempered Glass Protector.

DETAILED DESCRIPTION OF THE INVENTION

[0017] The Reusable Protective tempered glass for touch and non-touch screens of electronic devices includes a tempered glass protector and a cleaning kit for the screen and the protector. The composition and specifications of the protector and its parts are the following:

[0018] Adhesive structure (FIG. 2): 200 um (+/−10 um) acrylic PSA [6], 50 um PET substrate [7], 50 um (+/−5 um) Silicone PSA [8]

[0019] Adhesive optical properties tested with test method ASTM D 1003: Transmittance >90%, Haze <1.6%, Yellow Index <0.5%.

[0020] Adhesive performance test specifications (30 min on PET, peel-off speed=300 mm/min): 180° peel adhesion for the acrylic PSA layer[6]>1600 gf by test method KS T Acrylic PSA, 180° peel adhesion for the Silicone PSA layer[8] between 8 and 12 gf by test method KS T Silicone PSA.

[0021] Protector structure (FIG. 1): 0.125 mm protective film[1], 0.300 um electroplating AF coating[2], 0.330 mm tempered glass[3], 0.300 mm adhesive layer[4], 0.250 mm release liner[5].

[0022] Protector performance characteristics and tests: high transparency, light transmittance of over 92%, electrostatic absorption, favorable bonding, no formation of bubbles, no glue residues, no dust retention.

[0023] Protector Properties: glass thickness: 330+/−10 um, adhesive thickness: 300+/−5 um, adhesion to SUS <20 g/50 mm by test method FINAT-1, adhesion to glass <20 g/50 mm by test method FINAT-1, 2.5D edge process=60 um by quadratic element tester, edge strength=30 Kg by test method ASTMC1279, gluewater deviate test passed by test method SOP-Q-0011, steel ball drop test=1.9 M/64g by test method ASTM D1709, water droplets angle test >115° initially and >105° after 1000 frictions tested by a water drop angle tester and a friction tester.

EXAMPLES

[0024] The developed product is a screen protector of high quality for electronic devices that is easy to install and reusable. This innovative product will protect the screen of electronic devices with reduced costs, time of application, and labor. This protector will be available for various products such as cell phones, smartphones, tablets, laptops, and other electronic devices with a touch or non-touch display and a wide range of qualities. An example of the use of the proposed development is when a final user buys and installs by themselves a tempered glass protector on a cell phone. The task may be difficult or even impossible with the currently existing products. However, with the developed protector, the user could easily do it without external help and waste money since it can be reapplied if the initial attempt is unsuccessful.