1. The composite film for the silver reflective display screen is characterized by comprising a polyester layer (1), a protective layer (2) and a reflective layer (3), wherein the polyester layer (1) coats the protective layer (2) and the reflective layer (3), and the reflective layer (3) is connected with the protective layer (2).

2. A silver reflective display composite film according to claim 1, wherein the polyester layer (1) comprises a transparent polyester layer (11) and a white polyester layer (12), the protective layer (2) comprises an adhesion layer (21), a corrosion-resistant layer (22) and a PET layer (23), and the reflective layer (3) comprises a silver-plated layer (31) and a silver reflective film layer (32);

the bottom surface of the transparent polyester layer (11) is adhered to one surface of the adhesion layer (21), the corrosion-resistant layer (22) and the PET layer (23) are adhered in sequence, the silver coating layer (31) covers the silver reflecting film layer (32), the other surface of the silver coating layer (31) is adhered to the other surface of the PET layer (23), and the other surface of the silver reflecting film layer (32) is adhered to the white polyester layer (12).

3. The silver reflecting display screen composite film according to claim 2, wherein the silver coating layer (31) and the silver reflecting film layer (32) are connected through a cementing layer (4), the cementing layer (4) adopts a main body adhesive, a corrosion inhibitor and inorganic nano particles, wherein the main body adhesive, a slow release agent and the inorganic nano particles are mixed, and the weight ratio of the main body adhesive to the slow release agent to the inorganic nano particles is 13:9: 1-2.

4. A silver reflective display composite film according to claim 3, wherein the polyester layer (1) covers the protective layer (2) and the reflective layer (3) except the silver plating layer (31) and the silver reflective film layer (32) are polyester-polyurethane two-component glue containing silica and alumina, which are particles of over 40 mesh.

5. A silver reflective display composite film according to claim 4, wherein the thickness of the polyester layer (1) covering the protective layer (2) and the reflective layer (3) is not more than 100 nm.

6. A process for producing a silver reflective display composite film according to claim 5, comprising the steps of:

s1: preparing a composition for a composite film;

s2: the adhesion layer (21), the corrosion-resistant layer (22) and the PET layer (23) need to be subjected to plasma activation treatment on the surface of the film before use;

s3: preparing a cementing layer (4): uniformly mixing the main adhesive and the corrosion inhibitor to obtain a mixture, pouring inorganic nanoparticles into the mixture, soaking for 2h, dispersing at the rotating speed of 1500-3000r/min for 90-120min, and grinding to prepare an adhesive, wherein the adhesive is uniformly coated on the surface of the silver reflecting film layer (32) at the coating speed of 10m/min to obtain a bonding layer (4);

s4: preparation of a protective layer (2): the double-component glue is coated on the adhesion layer (21), the corrosion-resistant layer (22) and the PET layer (23), and the adhesion layer (21), the corrosion-resistant layer (22) and the PET layer (23) are adhered together to form a protective layer (2):

s5: assembling: the double-component glue is coated on the transparent polyester layer (11) and the white polyester layer (12), the transparent polyester layer (11) is adhered with the sealing layer (21), the white polyester layer (12) is adhered with the silver reflecting film layer (32), and the preparation of the composite film is completed.

7. The production process of the silver reflective display screen composite film according to claim 6, wherein in S5, the composite film is placed in a chamber with the temperature of 30-40 ℃, cooled to 30-40 ℃, placed in a cooling chamber with the temperature of-20 to-10 ℃ for cooling for 2-3 min, and cut to obtain the composite film.

Background

LCDs are non-emissive display devices, and display functions must be achieved by using a backlight, and high-performance backlight technology must be used in conjunction with the demand for slimness, miniaturization, and low power consumption of LCDs for mobile phones, notebook computers, and the like. The reflecting film in the backlight component is mainly used for improving the reflectivity of the optical surface and reflecting the light leaked out of the bottom of the light guide plate with high efficiency and no loss, thereby reducing the light loss, reducing the power consumption and improving the light saturation of the liquid crystal display surface. The silver-plated reflective film has the advantages of high reflectivity, thin thickness and the like, and is widely used for portable equipment such as mobile phones and tablet computers at present. However, the silver metal is unstable and reacts with water, oxygen, halide, sulfide and the like in the environment, so that the reflectivity is obviously reduced, and the whole display effect is influenced.

At present, oxides such as silicon oxide, aluminum oxide and the like are generally used as barrier films or protective layers, but because the oxide protective layers have oxygen, the silver films are oxidized by the protective layers in the preparation process and the long-term use process in the later period, so that the protective effect is reduced.

According to the silver reflection brightness enhancement film disclosed by CN201520238002.4, after the Ag film layer is plated on the PET substrate layer, the PET substrate layer is placed in an aging box for aging treatment at the temperature of-90 ℃ for 48h, so that the Ag film layer and the PET substrate layer are completely aged under the conditions of quenching and rapid heating, on one hand, the Ag film layer can be protected from being partially oxidized to weaken the optical performance, and on the other hand, a stable composite carrier can be obtained before the Al film layer is plated.

CN202110202590.6 discloses a silver reflective film, in which a high temperature resistant and high light permeable silica gel layer is used to laminate and attach a high temperature resistant and high light permeable anti-vulcanization film layer on the silver reflective layer, and the silica gel layer with high elasticity and high elasticity is used to match the high temperature expansion and contraction between the silver reflective layer and the vulcanization film layer, so as to achieve the purpose of no crack and void in the finished product. The silver reflecting film obtained by the technical scheme of the invention has good flexibility and no bending and cracking problems, has high temperature resistance, and can bear high-temperature reflow soldering processes such as: curing at 180 ℃ for 30-60 minutes and reflowing at 250 ℃ for 30 seconds-1 minute; also has long-time high-temperature vulcanization resistance, and can pass a high-temperature vulcanization resistance test at 80 ℃ for more than 6 hours.

The above patent has the following problems:

the film layer is treated at high temperature or low temperature by preventing partial oxidation, so that the service life of the film layer is reduced in high temperature or low temperature environment.

Disclosure of Invention

The invention aims to provide a silver reflective display screen composite film and a production process thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a silver reflecting display screen composite film comprises a polyester layer, a protective layer and a reflecting layer, wherein the polyester layer coats the protective layer and the reflecting layer, and the reflecting layer is connected with the protective layer.

Further, the polyester layer comprises a transparent polyester layer and a white polyester layer, the protective layer comprises an adhesion layer, a corrosion-resistant layer and a PET layer, and the reflective layer comprises a silver coating layer and a silver reflective film layer;

the bottom surface of the transparent polyester layer is adhered to one surface of the adhesion layer, the corrosion-resistant layer and the PET layer are sequentially adhered to each other, the silver coating layer covers the silver reflecting film layer, the other surface of the silver coating layer is adhered to the other surface of the PET layer, and the other surface of the silver reflecting film layer is adhered to the white polyester layer.

Further, the silver coating layer and the silver reflecting film layer are connected through a cementing layer, the cementing layer adopts a main body adhesive, a corrosion inhibitor and inorganic nano particles, wherein the main body adhesive, a slow release agent and the inorganic nano particles are mixed, and the weight ratio of the main body adhesive to the slow release agent to the inorganic nano particles is 13:9: 1-2.

Further, the polyester layer covers the protective layer and the reflective layer except the silver coating layer and the silver reflective film layer 32, and polyester-polyurethane bi-component glue which is added with silicon oxide and aluminum oxide is adopted, and the silicon oxide and the aluminum oxide are particles with over 40 meshes.

Furthermore, the thickness of the polyester layer covering the protective layer and the thickness of the reflection layer are not more than 100 nm.

The invention provides another technical scheme, which comprises a production process of a silver reflecting display screen composite film, and the production process comprises the following steps:

s1: preparing a composition for a composite film;

s2: the adhesion layer, the corrosion-resistant layer and the PET layer need to be subjected to plasma activation treatment on the surface of the film before use;

s3: preparing a cementing layer: uniformly mixing the main adhesive and the corrosion inhibitor to obtain a mixture, pouring inorganic nanoparticles into the mixture, soaking for 2h, dispersing at the rotating speed of 1500-3000r/min for 90-120min, and grinding to prepare an adhesive, wherein the adhesive is uniformly coated on the surface of the silver reflecting film layer at the coating speed of 10m/min to obtain a bonding layer;

s4: preparing a protective layer: the coating of bi-component glue is on closure layer, corrosion-resistant layer and PET layer, and closure layer, corrosion-resistant layer and PET layer are pasted together and are formed the protective layer:

s5: assembling: the double-component glue is coated on the transparent polyester layer and the white polyester layer, the transparent polyester layer is bonded with the sealing layer, the white polyester layer is bonded with the silver reflecting film layer, and the preparation of the composite film is completed.

Further, in S5, the composite film is placed in a room with the temperature of 30-40 ℃, cooled to 30-40 ℃, placed in a cooling room with the temperature of-20 to-10 ℃ for cooling for 2-3 min, and cut to obtain the composite film.

Compared with the prior art, the invention has the beneficial effects that:

the silver coating layer is adopted to protect the silver reflecting film layer, so that the oxidation resistance of the silver reflecting film layer is improved, the silver coating layer has little absorption on light, the influence on the reflecting performance is small, the combination of each layer is improved through the double-component glue, and the silver coating layer and the silver reflecting film layer have smooth surfaces, high smoothness and high reflectivity, so that the silver coating layer and the silver reflecting film layer can fully reflect, the upward emergent luminous flux is improved, most of downward emergent rays can be reflected, the upward emergent luminous flux is improved, the backlight light leakage is reduced, and the overall brightness of the display screen is improved.

Drawings

FIG. 1 is a diagram of a membrane structure according to the present invention;

FIG. 2 is a process flow diagram of the present invention.

In the figure: 1. a polyester layer; 11. a transparent polyester layer; 12. a white polyester layer; 2. a protective layer; 21. an adhesion layer; 22. a corrosion-resistant layer; 23. a PET layer; 3. a reflective layer; 31. a silver coating layer; 32. a silver reflective film layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1, a silver reflective display composite film includes a polyester layer 1, a protective layer 2 and a reflective layer 3, the polyester layer 1 covers the protective layer 2 and the reflective layer 3, and the reflective layer 3 is connected to the protective layer 2.

The polyester layer 1 comprises a transparent polyester layer 11 and a white polyester layer 12, the protective layer 2 comprises an adhesion layer 21, a corrosion-resistant layer 22 and a PET layer 23, and the reflective layer 3 comprises a silver coating 31 and a silver reflective film layer 32; the bottom surface of the transparent polyester layer 11 is adhered to one surface of the adhesion layer 21, the corrosion-resistant layer 22 and the PET layer 23 are adhered in sequence, the silver coating 31 covers the silver reflection film layer 32, the other surface of the silver coating 31 is adhered to the other surface of the PET layer 23, and the other surface of the silver reflection film layer 32 is adhered to the white polyester layer 12.

The silver coating 31 and the silver reflecting film layer 32 are connected through the cementing layer 4, the cementing layer 4 adopts a main adhesive, a corrosion inhibitor and inorganic nano particles, wherein the main adhesive, a slow release agent and the inorganic nano particles are mixed, the weight ratio of the main adhesive to the slow release agent to the inorganic nano particles is 13:9:1, the silver coating 31 is adopted to protect the silver reflecting film layer 32, the oxidation resistance of the silver reflecting film layer 32 is improved, the silver coating 31 has little absorption of light, the influence on the reflection performance is small, and the binding force of each layer is improved through the bi-component glue.

The polyester layer 1 covers the protective layer 2 and the reflective layer 3 except the silver coating 31 and the silver reflective film 32, and adopts polyester-polyurethane bi-component glue which is added with silicon oxide and aluminum oxide, wherein the silicon oxide and the aluminum oxide are particles with over 40 meshes.

The thickness of the polyester layer 1 covering the protective layer 2 and the reflective layer 3 is not more than 100 nm.

Referring to fig. 2, a process for manufacturing a composite film of a silver reflective display panel includes the following steps:

the method comprises the following steps: preparing a composition for a composite film;

step two: the adhesion layer 21, the corrosion-resistant layer 22 and the PET layer 23 need to be subjected to plasma activation treatment on the film surface before use;

step three: preparation of a cementing layer 4: uniformly mixing the main adhesive and the corrosion inhibitor to obtain a mixture, pouring inorganic nanoparticles into the mixture, soaking for 2h, dispersing at the rotating speed of 1500-3000r/min for 90-120min, and grinding to prepare an adhesive, wherein the adhesive is uniformly coated on the surface of the silver reflecting film layer 32 at the coating speed of 10m/min to obtain a bonding layer 4;

step four: preparation of the protective layer 2: the bi-component glue is coated on the bonding layer 21, the corrosion-resistant layer 22 and the PET layer 23, and the bonding layer 21, the corrosion-resistant layer 22 and the PET layer 23 are adhered together to form the protective layer 2:

step five: assembling: the double-component glue is coated on the transparent polyester layer 11 and the white polyester layer 12, the transparent polyester layer 11 is bonded with the bonding layer 21, the white polyester layer 12 is bonded with the silver reflecting film layer 32, the composite film is placed in a chamber with the temperature of 30-40 ℃, cooled to 30-40 ℃, placed in a cooling chamber with the temperature of-20 to-10 ℃, cooled for 2-3 min and cut to obtain the composite film, and the preparation of the composite film is completed.

The reflecting layer 3 and the protective layer 2 are connected with the polyester layer 1 through double-component glue before, and finally adhered to form a display screen composite film, the average reflectivity in the range of 460 plus 700nm is more than 95%, and the silver coating 31 and the silver reflecting film 32 have smooth surfaces, high smoothness and high reflectivity, and can fully reflect, improve the upward emergent luminous flux, reflect most of downward emergent rays, improve the upward emergent luminous flux, reduce backlight light leakage, and improve the overall brightness of the display screen.

Example two:

the utility model provides a silver reflection display screen complex film, includes polyester layer 1, protective layer 2 and reflecting layer 3, and 1 cladding protective layer 2 of polyester layer and reflecting layer 3, reflecting layer 3 is connected with protective layer 2.

The polyester layer 1 comprises a transparent polyester layer 11 and a white polyester layer 12, the protective layer 2 comprises an adhesion layer 21, a corrosion-resistant layer 22 and a PET layer 23, and the reflective layer 3 comprises a silver coating 31 and a silver reflective film layer 32;

the bottom surface of the transparent polyester layer 11 is adhered to one surface of the adhesion layer 21, the corrosion-resistant layer 22 and the PET layer 23 are adhered in sequence, the silver coating 31 covers the silver reflection film layer 32, the other surface of the silver coating 31 is adhered to the other surface of the PET layer 23, and the other surface of the silver reflection film layer 32 is adhered to the white polyester layer 12.

The silver coating 31 and the silver reflecting film layer 32 are connected through the cementing layer 4, the cementing layer 4 adopts a main adhesive, a corrosion inhibitor and inorganic nano particles, wherein the main adhesive, a slow release agent and the inorganic nano particles are mixed, the weight ratio of the main adhesive to the slow release agent to the inorganic nano particles is 13:9:2, the silver coating 31 is adopted to protect the silver reflecting film layer 32, the oxidation resistance of the silver reflecting film layer 32 is improved, the silver coating 31 has little absorption of light, the influence on the reflection performance is small, and the binding force of each layer is improved through the bi-component glue.

The polyester layer 1 covers the protective layer 2 and the reflective layer 3 except the silver coating 31 and the silver reflective film 32, and adopts polyester-polyurethane bi-component glue which is added with silicon oxide and aluminum oxide, wherein the silicon oxide and the aluminum oxide are particles with over 40 meshes.

The thickness of the polyester layer 1 covering the protective layer 2 and the reflective layer 3 is not more than 100 nm.

The method comprises the following steps: preparing a composition for a composite film;

step two: the adhesion layer 21, the corrosion-resistant layer 22 and the PET layer 23 need to be subjected to plasma activation treatment on the film surface before use;

step three: preparation of a cementing layer 4: uniformly mixing the main adhesive and the corrosion inhibitor to obtain a mixture, pouring inorganic nanoparticles into the mixture, soaking for 2h, dispersing at the rotating speed of 1500-3000r/min for 90-120min, and grinding to prepare an adhesive, wherein the adhesive is uniformly coated on the surface of the silver reflecting film layer 32 at the coating speed of 10m/min to obtain a bonding layer 4;

step four: preparation of the protective layer 2: the bi-component glue is coated on the bonding layer 21, the corrosion-resistant layer 22 and the PET layer 23, and the bonding layer 21, the corrosion-resistant layer 22 and the PET layer 23 are adhered together to form the protective layer 2:

step five: assembling: the double-component glue is coated on the transparent polyester layer 11 and the white polyester layer 12, the transparent polyester layer 11 is bonded with the bonding layer 21, the white polyester layer 12 is bonded with the silver reflecting film layer 32, the composite film is placed in a chamber with the temperature of 30-40 ℃, cooled to 30-40 ℃, placed in a cooling chamber with the temperature of-20 to-10 ℃, cooled for 2-3 min and cut to obtain the composite film, and the preparation of the composite film is completed.

The reflecting layer 3 and the protective layer 2 are connected with the polyester layer 1 through double-component glue before, and finally adhered to form a display screen composite film, the average reflectivity in the range of 460 plus 700nm is more than 95%, and the silver coating 31 and the silver reflecting film 32 have smooth surfaces, high smoothness and high reflectivity, and can fully reflect, improve the upward emergent luminous flux, reflect most of downward emergent rays, improve the upward emergent luminous flux, reduce backlight light leakage, and improve the overall brightness of the display screen.

In conclusion; according to the silver reflection display screen composite film and the production process thereof, the silver coating 31 is adopted to protect the silver reflection film layer 32, so that the oxidation resistance of the silver reflection film layer 32 is improved, the silver coating 31 has little absorption on light and little influence on reflection performance, the combination of all layers is improved through the double-component glue, and the silver coating 31 and the silver reflection film layer 32 have smooth surfaces, high smoothness and high reflectivity, so that the silver coating 31 can fully reflect, the upward emergent luminous flux is improved, most of downward emergent rays can be reflected, the upward emergent luminous flux is improved, the backlight light leakage is reduced, and the overall brightness of the display screen is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.