TW201506439A - Optical screen protector structure of electronic device - Google Patents

Abstract

An optical screen protector structure of an electronic device mainly includes a flaky glass substrate. An anti-reflection coating layer is provided on one side surface of the glass substrate. The coating layer has an anti-reflection film formed by at least one layer of a dielectric material and can be optionally added with an anti-glare film capable of making light distribution more evenly. An optically clear adhesive layer is provided on the other side surface of the glass substrate. The optically clear adhesive layer is laminated outward from the surface of the glass substrate sequentially with a layer of PMMA, a layer of PET (Polyethylene terephthalate) film, and a layer of silicon, such that the glass substrate can be repeatedly adhered to a screen of the electronic device via the optically clear adhesive layer. Through the characteristic of low light reflection of the coating layer, the phenomenon that the external strong light affects the viewing of contents displayed on the screen can be effectively reduced.

Description

Screen optical protection structure for electronic devices

The invention relates to a screen optical protection sticker structure of an electronic device, in particular to an optical protection structure capable of greatly reducing the reflection phenomenon of external light to ensure that the display content of the screen can be clearly observed under the condition that the external light is relatively strong. .

As various electronic devices with screens (especially touch screens) are gradually being widely used, many users choose to attach a screen protection sheet to the surface of the screen in order to avoid problems such as scratches or oil stains on the screen. To achieve the protection of the screen.

At present, in the use of the screen protector, the more common problem is the process of attaching the screen protector to the screen, which often occurs between the screen protector and the surface of the touch screen due to operational errors or omissions. An annoying bubble; to address the above-mentioned deficiencies, U.S. Patent No. 8,004,942 discloses a screen protector that overcomes the problem of air bubbles between the screen protector and the surface of the screen.

There is also a new patent case of the Republic of China Patent Notice No. M442264, "Screen Protection Device for Handheld Electronic Devices", which can effectively avoid the appearance of Newton's rings and prevent interference fringes on the screen presented, thereby ensuring that it is seen through the screen protector. The quality of the screen image.

The above disclosed disclosed structures are improved in terms of screen surface protection and preventing the screen protector from adversely affecting the screen display. However, in the use of the portable electronic device, there is another inconvenience in use. That is, when the external light is stronger than the brightness of the screen (for example, in outdoor sunlight), the glare of the light reflection may affect the user's inability to clearly view the screen content; as shown in Fig. 1, it is attached to the screen window. The structure of the visor glass screen protection sheet of the adhesive layer is disposed on the side, and the structure shown in the figure is provided on the 20-side side of a glass sheet with a ring of an annular adhesive layer 30, so that the glass sheet 20 can pass through the loop of the ring rubber. Layer 30 is bonded to the electronic device On the screen 4, a protection is formed on the outer side of the screen 4, and a hollow portion 301 is left in the center of the annular rubber layer 30; in the practical application, when the external light intensity A0 (100%) is projected from the air When the outer surface of the glass sheet 20 is formed, a reflected light A1 (reflectance of about 4.1%) is generated, and when light is projected into the air through the inside of the glass sheet 20, a reflected light A2 (reflectance of about 4.1%) is generated, and then, When the light passing through the hollow portion 301 enters the surface of the screen 4, a reflected light A3 (reflectance of about 4.1%) is generated. Finally, the light passes through the screen 4 and enters another medium (for example, the touch module 40). Will produce a reflected light A4 (reflectivity of about 1.3%), so the total reflectivity A = (A1 + A2 + A3 + A4) reflectance = 13 ~ 14%; and the current average maximum illumination of the sun is roughly estimated to be about 100,000 LUX If the sun's rays reflected by the reflectivity of 13~14% will seriously affect the quality of the user's viewing screen.

In addition, as shown in FIG. 2, it is provided on the surface of one side of the glass sheet 20 to provide a fully-distributed viscose full-glue glass screen protection sheet. The structure shown in the figure is provided on the front side of the glass sheet 20 with a comprehensive distribution. The adhesive layer 300 enables the glass sheet 20 to be adhered to the screen 4 of the electronic device via the adhesive layer 300; when the structure is applied, the external light intensity B0 (100%) is projected from the air to the glass sheet. At the outer surface of 20, a reflected light B1 (reflectance of about 4.1%) is generated, and when light is projected into the adhesive layer 300 through the inside of the glass sheet 20, a reflected light B2 (reflectance of about 0.01%) is generated, and then the light is irradiated. When the adhesive layer 300 enters the surface of the screen 4, a reflected light B3 (reflectance of about 0.2%) is also generated. Finally, the light passes through the screen 4 and enters another medium (for example, the touch module 40), which generates A reflected light B4 (reflectance of about 1.3%), so its total reflectivity B = (B1 + B2 + B3 + B4) reflectivity = 5.6%; the solar light reflected by this reflectivity will also affect the user's view The quality of the screen, it can be seen that the application of this kind of LCD screen under strong light is still missing. It is not seen that any device or structure having a solution on the market is disclosed, and this is also a problem that the relevant industry needs to work hard.

In view of the above limitations and limitations in the application of the screen protector, the inventors have studied the improvement of these shortcomings, and finally the present invention has been produced.

The main object of the present invention is to provide a screen optical protection of an electronic device. The sticker structure is provided on the surface of a glass substrate with an optical layer which can greatly reduce the reflection of external light to ensure that the user can clearly view the display content and reduce the external environmental influence under the external strong light. The convenience of using the electronic device.

Another object of the present invention is to provide a screen optical protection structure for an electronic device, which is provided with an adhesive layer having a silicone component on the back side of the glass substrate, so that the glass substrate having the optical layer can be repeatedly pasted and used. Different electronic devices are on the screen to generate greater economic benefits.

In order to achieve the above object and effect, the technical means adopted by the present invention comprises: a sheet-like glass substrate; an anti-reflective coating layer disposed on one side surface of the glass substrate, the coating layer having at least An anti-reflection antireflection film consisting of at least one low refractive index dielectric material having a refractive index of 1.3 to 1.48; an optically transparent adhesive layer (Optically Clear Adhesive) layer The optically transparent adhesive layer is composed of at least one layer of silicone having a refractive index of 1.38 to 1.48, which has the characteristics of repeated adhesive bonding.

According to the above structure, the anti-reflection antireflection film further comprises a dielectric material having a high refractive index of 1.9 to 2.4.

According to the above structure, the anti-reflection antireflection film further comprises a dielectric material having a refractive index of 1.7 to 1.9.

According to the above structure, the film thickness of the low refractive index dielectric material is 10 to 120 nm, the film thickness of the medium refractive index dielectric material is 60 to 120 nm, and the film thickness of the high refractive index dielectric material is 60 ~280nm.

According to the above structure, the anti-reflection antireflection film further comprises a dielectric material having a refractive index of 1.7 to 1.9.

According to the above structure, the coating layer further comprises an anti-glare film which can make the light distribution more uniform, so as to effectively alleviate the glare caused by the light reflection.

According to the above structure, the anti-glare optical film is formed by one of etching and plating.

According to the above structure, the anti-glare optical film has a haze of 3 to 70%, a luminance of 30 to 120, and a flatness of 0.1 to 0.9.

According to the above structure, the glass substrate is one selected from the group consisting of soda lime glass and high alumina glass, and has a refractive index of 1.43 to 1.6.

According to the above structure, the glass substrate has a thickness of 0.1 to 10 mm.

According to the above structure, the optically transparent adhesive layer is further provided with an acrylic glue (PMMA) bonded to the surface of the glass substrate between the silicone rubber and the glass substrate, and a combination between the acrylic adhesive and the silicone rubber. PET film.

According to the above structure, the refractive index of the acrylic rubber (PMMA) is 1.44 to 1.58, and the refractive index of the PET film is 1.53 to 1.61.

According to the above structure, the thickness of the silicone rubber is 0.005 to 0.1 mm, the thickness of the acrylic rubber is 0.005 to 0.1 mm, and the thickness of the PET film is 0.005 to 0.1 mm.

In order to achieve a more specific understanding of the above objects, effects and features of the present invention, the following figures are illustrated as follows:

1, 10‧‧‧ coating layer

11‧‧‧Anti-glare optical film

2‧‧‧glass substrate

20‧‧‧Stainless glass

3‧‧‧Optical transparent adhesive layer

31‧‧‧Acrylic Glue

32‧‧‧PET film

33‧‧‧矽胶

30‧‧‧Acyclic layer

301‧‧‧ Hollow

300‧‧ ‧ adhesive layer

4‧‧‧ screen

40‧‧‧Touch Module

A0, B0, C0‧‧‧ external light intensity

A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, C5‧‧‧ reflected light

Fig. 1 is a schematic view showing the light reflection of the frame glass protective film.

Fig. 2 is a schematic view showing the light reflection of the full-glue glass screen protection sheet.

Figure 3 is a cross-sectional view showing the structure of a first embodiment of the present invention.

Fig. 4 is a view showing the light reflection of the first embodiment of the present invention.

Figure 5 is a cross-sectional view showing the structure of a second embodiment of the present invention.

Referring to Figures 3 and 4, it is understood that the structure of the first embodiment of the present invention mainly includes: a coating layer 1, a glass substrate 2, and an optically transparent adhesive layer 3, wherein the glass substrate 2 is a A flaky glass structure, which may be soda lime glass or high alumina glass having a thickness of between 0.1 and 10 mm, and having a refractive index maintained between 1.43 and 1.6.

The coating layer 1 is an anti-reflection film disposed on a surface of the glass substrate 2, and the anti-reflection antireflection film has a refractive index of at least 1.3 to 1.48 and a film thickness of 10 Å. 120 nm low refractive index dielectric material, in practical applications, the low refractive index dielectric material It can also be combined with a high refractive index dielectric material with a refractive index of 1.9~2.4 and a film thickness of 60~280nm, and/or a refractive index dielectric material with a refractive index of 1.7~1.9 and a film thickness of 60~120nm. The anti-reflection antireflection film is combined together.

The optically transparent adhesive layer 3 is disposed on the other side surface of the glass substrate 2. The optically transparent adhesive layer 3 mainly has a thickness of 0.005 to 0.1 mm and a refractive index of 1.38 to 1.48. Silicone 33 (Silicon), in practical application, the silicone 33 can be combined with an acrylic glue 31 (PMMA) bonded to the glass substrate 2, the thickness of the acrylic 31 is 0.005~0.1mm, the refractive index The PET film 32 has a thickness of 0.005 to 0.1 mm and a refractive index of 1.53 to 1.61, which is 1.44 to 1.58, and a PET film 32 (Polyethylene terephthalate) bonded between the acrylic rubber 31 and the silicone rubber 33. The above combination makes the optically transparent adhesive layer 3 have a low-reflection and repeatable adhesive structure.

When the above structure is used, when the external light intensity C0 (100%) is projected from the air on the outer surface of the coating layer 1, a reflected light C1 is generated, and when the light passes through the inside of the coating layer 1 and is projected onto the outer surface of the glass substrate 2 When a reflected light C2 (the reflectance of C1 + the reflectance of C2 = about 0.3%) is generated, then when the light enters the surface of the optically transparent adhesive layer 3 through the glass substrate 2, a reflected light C3 is generated ( The reflectivity is about 0.01%), and when light enters the surface of the screen 4 through the optically transparent adhesive layer 3, a reflected light C4 (reflectance of about 0.2%) is also generated. Finally, the light passes through the screen 4 and enters other medium. (For example, the touch module 40), a reflected light C5 (reflectance of about 1.3%) is generated, so the total reflectance C = (C1 + C2 + C3 + C4) reflectance = 1.8%; The maximum average illumination is about 100,000 LUX, and the reflected sunlight is properly suppressed and ensures the quality of the screen.

Referring to FIG. 5, it is understood that the structure of the second embodiment of the present invention is mainly based on the foregoing first embodiment, and includes: a coating layer 10 and a glass substrate 2 which is the same as the first embodiment, and is optically transparent. a portion of the adhesive layer 3, wherein the coating layer 10 is composed of the same coating layer 1 (anti-reflection anti-reflection film) as that of the first embodiment and an anti-glare film formed by etching or coating. The composition of the anti-glare optical film 11 has a haze of 3 to 70%, a luminance of 30 to 120, and a flatness of 0.1 to 0.9, which can make the light distribution more uniform, thereby effectively alleviating the light reflection. In the case of glare, the anti-reflection antireflection film can be used to produce better glare The quality of the viewing screen under the environment.

In summary, the optical optical protection structure of the electronic device of the present invention can achieve the effect of reducing the reflection of external light and ensuring the clear view of the screen display in an external strong light environment, which is a novelty and improvement. The invention of the invention is filed in accordance with the law; however, the above description is only for the preferred embodiment of the invention, and the variations, modifications, alterations or equivalent substitutions of the technical means and scope of the invention are extended. It is also within the scope of the patent application of the present invention.

1‧‧‧ coating layer

2‧‧‧glass substrate

3‧‧‧Optical transparent adhesive layer

31‧‧‧Acrylic Glue

32‧‧‧PET film

33‧‧‧矽胶

4‧‧‧ screen

40‧‧‧Touch Module

CO‧‧‧External light intensity

C1, C2, C3, C4, C5‧‧‧ reflected light

Claims (10)

A screen optical protection sticker structure for an electronic device, comprising: at least: a sheet-like glass substrate; an anti-reflection coating layer disposed on a side surface of the glass substrate, the coating layer having at least one anti-reflection layer An anti-reflection film consisting of at least one low refractive index dielectric material having a refractive index of 1.3 to 1.48; an optically transparent adhesive layer (Optically Clear Adhesive) layer Distributed on the other side surface of the glass substrate, the optically transparent adhesive layer is composed of at least one layer of silicone having a refractive index of 1.38 to 1.48, which has the characteristics of repeated adhesive bonding. The screen optical protection structure of the electronic device of claim 1, wherein the anti-reflection anti-reflection film further comprises a dielectric material having a high refractive index of 1.9-2.4, the high refractive index. The film thickness of the dielectric material is 60 to 280 nm, and the film thickness of the low refractive index dielectric material is 10 to 120 nm. The screen optical protection structure of the electronic device of claim 1, wherein the anti-reflection anti-reflection film further comprises a dielectric material having a refractive index of 1.7 to 1.9, wherein the refractive index is The film thickness of the dielectric material is 60 to 120 nm, and the film thickness of the low refractive index dielectric material is 10 to 120 nm. The screen optical protection structure for an electronic device according to any one of claims 1 to 3, wherein the coating layer further comprises an anti-glare film capable of distributing light more uniformly to effectively alleviate The glare caused by light reflection. The screen optical protection structure of the electronic device according to the fourth aspect of the invention, wherein the anti-glare optical film is formed by one of etching and plating, and the haze of the anti-glare optical film is 3 to 70. %, the brightness is 30~120, and the flatness is 0.1~0.9. The screen optical protection structure of the electronic device according to any one of claims 1 to 3, wherein the glass substrate is one selected from the group consisting of soda lime glass and high alumina glass, and the refractive index thereof is 1.43~ 1.6. The screen optical protection structure for an electronic device according to claim 6, wherein the glass substrate has a thickness of 0.1 to 10 mm. The screen optical protection structure of the electronic device according to any one of claims 1 to 3, wherein the optically transparent adhesive layer is further provided with a pressure bonded to the surface of the glass substrate between the silicone resin and the glass substrate. A glue (PMMA), and a PET film (Polyethylene terephthalate) bonded between the acrylic glue and the silicone rubber. The screen optical protection structure of the electronic device according to claim 8, wherein the acrylic resin (PMMA) has a refractive index of 1.44 to 1.58, and the PET film has a refractive index of 1.53 to 1.61. The screen optical protection structure of the electronic device according to claim 9, wherein the thickness of the silicone is 0.005 to 0.1 mm, the thickness of the acrylic is 0.005 to 0.1 mm, and the thickness of the PET film is 0.005. ~0.1mm.