Display screen protection glass with heat insulation and high light transmission functions and production process

Abstract

The invention relates to display screen protection glass with heat insulation and high light transmission functions and a production technology, and relates to the field of display screen outer protection glass production technologies. The inner-layer glass is arranged on one side of the outer-layer glass at intervals, and the outer-layer glass and the inner-layer glass are both coated with low-reflection plating layers; the heat-resistant connecting interlayer is arranged between the outer-layer glass and the inner-layer glass and is used for blocking part of ultraviolet rays and heat in sunlight; the inner-layer glass is arranged on the outer-layer glass, the heat-resistant connecting interlayer is arranged on the inner-layer glass, the ink printing layer is arranged on the heat-resistant connecting interlayer, the thickness range of the outer-layer glass is 5.8-6.2 mm, the thickness range of the inner-layer glass is 3.8-4.2 mm, the thickness range of the heat-resistant connecting interlayer is 0.74-0.78 mm, and the thickness range of the ink printing layer is 20-30 microns. The anti-reflection performance of the display screen protection glass is improved, ultraviolet rays and infrared rays can be prevented from penetrating through the display screen protection glass to enter the advertising machine, the temperature of the inner side of the display screen is reduced, the watching experience of the outdoor display screen is improved, and the service life of the outdoor display screen is prolonged.

Description

Technical Field

[0001] The present application relates to the field of display screen protection glass production technology, and in particular to a display screen protection glass with heat insulation and high light transmittance functions and a production process. Background Art

[0002] Display screen protection glass is a glass material specially used for manufacturing display screens. It is used to cover the outside of the display screen as a protective layer of the screen to resist scratches, abrasions and minor collisions. It usually has better flatness and transparency to ensure clear display effects and improve viewing experience.

[0003] At present, display screen protection glass is usually installed indoors. There is no strong sunlight indoors, so the glass is required to have relatively low anti-reflection and thermal conductivity. However, with the need for publicity, more and more outdoor advertising screens are emerging. The existing display screen protection glass has poor anti-reflection and thermal conductivity, resulting in blurred image information displayed on outdoor screens, poor viewing experience, and direct sunlight outdoors will cause the glass temperature to rise, and heat is not easy to dissipate in the display, affecting the service life of the display. Summary of the invention

[0004] In order to improve the anti-reflective performance of the display screen protection glass, and to block ultraviolet and infrared rays from penetrating the display screen protection glass into the advertising machine, thereby reducing the temperature inside the display screen and improving the viewing experience and service life of the outdoor display screen, the present application provides a display screen protection glass with heat insulation and high light transmittance functions and a production process.

[0005] The present application provides a display screen protective glass with heat insulation and high light transmittance functions and a production process, which adopts the following technical solutions: In a first aspect, the present application provides a display screen protective glass with heat insulation and high light transmittance functions, comprising: Outer glass; The inner glass is spaced apart from one side of the outer glass, and both the outer glass and the inner glass are coated with a low-reflection coating; The heat-resistant interlayer is placed between the outer glass and the inner glass to block some of the ultraviolet rays and heat in the sunlight; The ink printing layer is arranged on the inner surface of the inner layer of glass.

[0006] By adopting the above technical scheme, the outer glass serves as the outer protective layer of the display screen protective glass, and has high light transmittance and durability. The inner glass also serves as the supporting layer of the display screen, and both the outer glass and the inner glass are coated with a low-reflection coating to reduce light reflection and improve the clarity and display effect of the display screen; the heat-resistant connecting interlayer is used to block part of the ultraviolet rays and heat in the sunlight, improve the heat insulation performance of the glass, and ensure light transmittance at the same time; the ink printing layer can block more ultraviolet rays on the one hand, and increase the decorativeness of the glass on the other hand; wherein the multi-layer structure design and special coating treatment not only improve the anti-reflection performance of the display screen protective glass, thereby overcoming the disadvantage that the outdoor sunlight reflection is too strong, resulting in the image information displayed on the outdoor display screen being relatively blurred, but also blocks part of the ultraviolet rays and heat in the sunlight from penetrating into the interior of the display screen, thereby improving the viewing experience and service life of the outdoor display screen.

[0007] Optionally, the thickness of the outer glass layer ranges from 5.8 to 6.2 mm, the thickness of the inner glass layer ranges from 3.8 to 4.2 mm, the thickness of the heat-resistant connecting interlayer ranges from 0.74 to 0.78 mm, and the thickness of the ink printing layer ranges from 20 to 30 μm.

[0008] By adopting the above technical solution, the thickness range of the outer glass and the inner glass can ensure high light transmittance on the one hand, and ensure the structural strength and durability of the glass on the other hand, while reducing the overall weight. The heat-resistant connecting interlayer is within this thickness range and can effectively block ultraviolet rays and heat in the sun.

[0009] Optionally, for ultraviolet light of 200 to 380 nm, its transmittance is <1.2%, for visible light of 380 to 780 nm, its transmittance is >84%, and for infrared light of 780 to 2500 nm, its transmittance is <15%.

[0010] By adopting the above technical solution, the penetration of ultraviolet rays, visible light and infrared rays can be greatly blocked within this transmittance parameter range, protecting the human eye from ultraviolet radiation while reducing the conduction of heat and infrared rays.

[0011] Optionally, the heat-resistant connecting interlayer is made of PVB material.

[0012] By adopting the above technical solution, the heat-resistant connecting interlayer can enhance the impact resistance and adhesion of the glass on the one hand, and can also play a sunshade role on the other hand, which can block part of the ultraviolet rays and heat and reduce the degree of heat on the display screen.

[0013] Optionally, the low-reflection coating is made of AR coating.

[0014] By adopting the above technical solutions, AR coating can improve light transmittance, reduce light reflection on the glass or lens surface, and enhance visual clarity and contrast.

[0015] In a second aspect, the present application provides a production process of a display screen protective glass with heat insulation and high light transmittance functions, which is applicable to the above-mentioned display screen protective glass with heat insulation and high light transmittance functions, and the production steps are as follows: S1. A low-reflection coating is applied on the glass substrates of the outer glass and the inner glass; S2, cutting the glass substrates of the outer glass and the inner glass into required sizes, grinding the edges and then cleaning; S3, coating the inner surface of the inner glass with an ink printing layer; S4, drying the ink printing layer; S5, Tempering: Temper the outer glass and the inner glass, and sinter the ink printing layer on the inner surface of the inner glass; S6, interlayer lamination: placing the heat-resistant connecting interlayer between the outer glass and the inner glass, evacuating or pre-pressing, and then sending it into an autoclave for high-temperature and high-pressure degassing, so that the outer glass, the inner glass and the heat-resistant connecting interlayer are connected to form a whole; S7, cooling the heated and solidified glass; S8. Check the thickness, uniformity and quality of the glass, and perform thermal insulation and high light transmittance performance tests; S9, edge grinding, hole processing or other customized processing; S10, glass lamination and packaging.

[0016] By adopting the above technical solution, by coating an ink printing layer on the inner glass and coating a low-reflection coating on the glass substrate of the outer glass and the inner glass, the conduction of heat and the radiation of ultraviolet rays can be effectively blocked, thereby improving the heat insulation performance of the display screen protective glass; by coating a low-reflection coating and an ink printing layer, the reflectivity of the glass surface can be reduced, the light transmittance can be improved, the display screen protective glass has better visual effects and display quality, and the outdoor viewing experience is improved.

[0017] Optionally, in S2, the printing temperature of the ink printing layer is 20-25°C, and the printing humidity is controlled at 40-60%.

[0018] By adopting the above technical solution, under the above temperature conditions, it helps to quickly solidify the ink on the surface of the printing medium, reduce adhesion and blurring after printing, and improve the clarity of the glass after printing; under the above humidity conditions, it can reduce the moisture absorption and distortion of the medium during the printing process, ensure the fluidity and adhesion of the ink, and improve the quality and accuracy after printing.

[0019] Optionally, in S3, the drying temperature range is 140° to 160°, and the drying time is 3 to 5 minutes.

[0020] By adopting the above technical solution, the above drying temperature and time can accelerate the drying process of the ink printing layer, and make the ink printing layer evenly heated to reduce deformation or shrinkage; and the glass can be preheated in advance to facilitate subsequent tempering heating.

[0021] Optionally, in S4, the tempering heating temperature range is 660° to 720°, and the heating time is 6 to 7 minutes.

[0022] By adopting the above technical scheme, if the temperature control is unreasonable, the glass is prone to warping, resulting in poor flatness of the interlayer, and bubbles will exist in the heat-resistant connecting interlayer after high temperature and high pressure compounding. The ink printing layer of the inner glass needs to be tempered upward during tempering. Therefore, the low-reflective glass film surface of the inner glass will contact the roller. During the tempering process, if the transmission speed and heating temperature of the glass are not reasonably controlled, the inner glass is prone to frictional delamination or high-temperature film burnout. The tempering of the glass will cause the glass to deform due to heat, and the length and width will increase. The present application controls the heating temperature and time of the glass to increase the length and width of the glass by 0.5mm, thereby ensuring the accuracy of the glass silk-screen printing area.

[0023] Optionally, in S5, air cooling is used for rapid cooling and cooling, with the rapid cooling time being 60 to 70 seconds and the cooling time being 70 to 80 seconds.

[0024] By adopting the above technical solution, the use of air cooling for rapid cooling and cooling can quickly reduce the temperature of the glass, shorten the production cycle and improve production efficiency.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through multi-layer structure design and special coating treatment, not only the anti-reflection performance of the display screen protective glass is improved, thus overcoming the disadvantage that the outdoor sunlight reflection is too strong, resulting in blurred image information displayed on the outdoor display screen, but also part of the ultraviolet rays and heat in the sunlight are blocked from penetrating into the interior of the display screen, thus improving the viewing experience and service life of the outdoor display screen; 2. For ultraviolet rays of 200-380nm, its transmittance is <1.2%, for visible light of 380-780nm, its transmittance is >84%, and for infrared rays of 780-2500nm, its transmittance is <15%. Under this transmittance parameter range, ultraviolet rays, visible light, and infrared rays can greatly block the penetration of ultraviolet rays and infrared rays, protect human eyes from ultraviolet radiation, and reduce the conduction of heat and infrared rays; 3. The drying temperature range is 140°~160°, and the drying time is 3~5min. This drying temperature and time can accelerate the drying process of the ink printing layer, so that the ink printing layer is evenly heated and deformation or shrinkage is reduced; 4. The tempering heating temperature range is 660°~720°, the heating time is 6~7min, and air cooling is used for rapid cooling and cooling. The rapid cooling time is 60~70s and the cooling time is 70~80s. If the temperature control is unreasonable, the glass is prone to warping, resulting in poor flatness of the interlayer, and bubbles exist in the heat-resistant connecting interlayer after high temperature and high pressure compounding. The ink printing layer of the inner glass needs to be tempered upward during tempering. Therefore, the low-reflective glass film surface of the inner glass will contact the roller. During the tempering process, if the transmission speed and heating temperature of the glass are not reasonably controlled, the inner glass is prone to frictional delamination or high-temperature film burnout. The tempering of the glass will cause the glass to deform due to heat, and the length and width will increase. This application controls the heating temperature and time of the glass to increase the length and width of the glass by 0.5mm, thereby ensuring the accuracy of the glass silk-screen printing area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the display screen protection glass in this application; Figure 2 It is a production process flow chart of display screen protection glass.

[0027] Explanation of the reference numerals: 1. outer glass; 2. inner glass; 3. low-reflection coating; 4. heat-resistant connecting interlayer; 5. ink printing layer. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 2 This application is described in further detail.

[0029] The present application embodiment discloses a display screen protective glass with heat insulation and high light transmittance functions. Figure 1 The display screen protective glass comprises an outer layer of glass 1, an inner layer of glass 2 is arranged at one side of the outer layer of glass 1, and the side of the outer layer of glass 1 away from the inner layer of glass 2 can be arranged in a flat or convex surface. The outer layer of glass 1 and the inner layer of glass 2 serve as the outer protective layer of the display screen protective glass, and have high light transmittance and durability. The outer layer of glass 1 and the inner layer of glass 2 are coated with a low-reflection coating 3 on the side away from each other, and the low-reflection coating 3 is used to reduce light reflection and improve the clarity and display effect of the display screen. A heat-resistant connecting interlayer 4 is arranged between the outer layer of glass 1 and the inner layer of glass 2, and the heat-resistant connecting interlayer 4 is used to block part of the ultraviolet rays and heat in the sunlight and improve the thermal insulation performance of the glass. An ink printing layer 5 is arranged on the inner surface of the inner layer of glass 2, and the ink printing layer 5 is used to block more ultraviolet rays and increase the decorativeness of the glass.

[0030] Reference Figure 1In some embodiments, the thickness of the outer glass 1 ranges from 5.8 to 6.2 mm, and the thickness of the inner glass 2 ranges from 3.8 to 4.2 mm. The thickness range of the outer glass 1 and the inner glass 2 can ensure high light transmittance on the one hand, and on the other hand, can ensure the structural strength and durability of the glass while reducing the overall weight. The thickness range of the heat-resistant connecting interlayer 4 is 0.74 to 0.78 mm. Within this thickness range, the heat-resistant connecting interlayer 4 can effectively block ultraviolet rays and heat in the sun. The thickness range of the ink printing layer 5 is 20 to 30 μm. The ink printing layer 5 with this thickness range can ensure the color saturation and clarity of the display screen. The thickness range of the low-reflection coating is 100 to 150 nm.

[0031] Reference Figure 1 In some embodiments, for ultraviolet light of 200-380nm, the transmittance is <1.2%, for visible light of 380-780nm, the transmittance is >84%, and for infrared light of 780-2500nm, the transmittance is <15%. Within this transmittance parameter range, ultraviolet light, visible light, and infrared light can significantly block the penetration of ultraviolet light and infrared light, protect human eyes from ultraviolet radiation, and reduce the conduction of heat and infrared light.

[0032] Reference Figure 1 In some embodiments, the heat-resistant connecting interlayer 4 is made of PVB (polyvinyl chloride alcohol ether), wherein the heat-resistant connecting interlayer 4 can enhance the impact resistance and adhesion of the glass, and can also play a role in sunshade, which can block part of the ultraviolet rays and heat, and reduce the degree of heat on the display screen. The low-reflective coating 3 is made of AR coating (Anti-Reflective Coating), which can improve the light transmittance, reduce the reflection of light on the surface of the glass or lens, and enhance the visual clarity and contrast.

[0033] The present application also discloses a production process of a display screen protective glass with heat insulation and high light transmittance function, which is applicable to the above-mentioned display screen protective glass with heat insulation and high light transmittance function, and Figure 1 and Figure 2 , the production steps are as follows: S1. Coating a low-reflection coating 3: coating a low-reflection coating 3 on the glass substrates of the outer glass 1 and the inner glass 2, and performing an inspection.

[0034] S2, cutting, edge grinding, and cleaning: cutting the glass substrates of the outer layer glass 1 and the inner layer glass 2 to required sizes, and performing edge grinding and cleaning.

[0035] S3, glass printing ink: the inner surface of the inner glass 2 is coated with an ink printing layer 5, and the printing temperature of the ink printing layer 5 is 20-25°C. Under this temperature condition, it is helpful for the ink to solidify quickly on the surface of the printing medium, reduce the adhesion and blur after printing, and improve the clarity of the glass after printing. The printing humidity is controlled at 40-60%. Under this humidity condition, the moisture absorption and distortion of the medium during the printing process can be reduced, the fluidity and adhesion of the ink can be ensured, and the quality and accuracy after printing can be improved.

[0036] S4, ink drying: drying the ink printing layer 5; the drying temperature range is 140° to 160°, and the drying time is 3 to 5 minutes. Under this drying temperature and time, the drying process of the ink printing layer 5 can be accelerated, and the ink printing layer 5 can be evenly heated to reduce deformation or shrinkage.

[0037] S5. Tempering: Temper the outer glass 1 and the inner glass 2, and at the same time complete the sintering of the ink printing layer 5 on the inner surface of the inner glass 2. The tempering heating temperature range is 660°~720°, and the heating time is 6~7min. If the temperature control is unreasonable, the glass is prone to warping, resulting in poor flatness of the interlayer. Bubbles exist in the heat-resistant connecting interlayer 4 after high-temperature and high-pressure compounding. The ink printing layer 5 of the inner glass 2 needs to be tempered upward during tempering. Therefore, the low-reflective glass film surface of the inner glass 2 will contact the roller. During the tempering process, if the transmission speed and heating temperature of the glass are not reasonably controlled, the inner glass 2 is prone to frictional delamination or high-temperature film burnout. The tempering of the glass will cause the glass to deform due to heat, and the length and width will increase. This application controls the heating temperature and time of the glass to increase the length and width of the glass by 0.5mm, thereby ensuring the accuracy of the glass silk-screen printing area. Deionized water is used for cleaning after tempering is completed.

[0038] S6. Interlayer assembly: Place the heat-resistant connecting interlayer 4 between the outer glass 1 and the inner glass 2, and after vacuuming or pre-pressing, send it into an autoclave for high-temperature and high-pressure degassing, so that the outer glass 1 and the inner glass 2 as well as the heat-resistant connecting interlayer 4 are connected to form a whole, and at the same time, clean the overflowed glue of the heat-resistant connecting interlayer 4 on the edge of the glass.

[0039] S7. Cooling: After the glass is tempered, air cooling is used for rapid cooling and cooling. The rapid cooling time is 60 to 70 seconds and the cooling time is 70 to 80 seconds. The use of air cooling for rapid cooling and cooling can quickly reduce the temperature of the glass and shorten the production cycle.

[0040] S8. Inspection: Check the thickness, uniformity and quality of the glass, and perform thermal insulation and high light transmittance performance tests.

[0041] S9. Packing and warehousing: The processed display screen protective glass is packaged after lamination to protect its surface from scratches or damage.

[0042] The implementation principle of the display screen protective glass and production process with heat insulation and high light transmittance functions in the embodiment of the present application is as follows: the outer glass 1 is used as the outer protective layer of the display screen protective glass, and has high light transmittance and durability. The inner glass 2 is also used as the supporting layer of the display screen, and the outer glass 1 and the inner glass 2 are coated with a low-reflection coating 3 to reduce light reflection and improve the clarity and display effect of the display screen; the heat-resistant connecting interlayer 4 is used to block part of the ultraviolet rays and heat in the sunlight, improve the heat insulation performance of the glass, and ensure light transmittance at the same time; the ink printing layer 5 can block more ultraviolet rays on the one hand, and increase the decorativeness of the glass on the other hand; wherein the multi-layer structure design and special coating treatment not only improve the anti-reflection performance of the display screen protective glass, thereby overcoming the disadvantage that the outdoor sunlight reflection is too strong, resulting in the image information displayed on the outdoor display screen being relatively blurred, but also blocks part of the ultraviolet rays and heat in the sunlight from penetrating into the interior of the display screen, thereby improving the viewing experience and service life of the outdoor display screen.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display screen protective glass with heat insulation and high light transmittance function, characterized in that: include: Outer glass (1); An inner layer of glass (2) is arranged at a distance from one side of the outer layer of glass (1), and both the outer layer of glass (1) and the inner layer of glass (2) are coated with a low-reflection coating (3); The heat-resistant connecting interlayer (4) is arranged between the outer glass (1) and the inner glass (2) and is used to block part of the ultraviolet rays and heat in the sunlight; The ink printing layer (5) is arranged on the inner surface of the inner layer of glass (2).

2. The display screen protective glass with heat insulation and high light transmittance function according to claim 1, characterized in that: The thickness of the outer glass (1) ranges from 5.8 to 6.2 mm, the thickness of the inner glass (2) ranges from 3.8 to 4.2 mm, the thickness of the heat-resistant connecting interlayer (4) ranges from 0.74 to 0.78 mm, and the thickness of the ink printing layer (5) ranges from 20 to 30 μm.

3. The display screen protective glass with heat insulation and high light transmittance function according to claim 1, characterized in that: For ultraviolet light of 200-380nm, its transmittance is <1.2%, for visible light of 380-780nm, its transmittance is >84%, and for infrared light of 780-2500nm, its transmittance is <15%.

4. The display screen protective glass with heat insulation and high light transmittance function according to claim 1, characterized in that: The heat-resistant connecting interlayer (4) is made of PVB material.

5. The display screen protective glass with heat insulation and high light transmittance function according to claim 1, characterized in that: The low-reflection coating (3) is made of AR coating.

6. A production process for display screen protective glass with heat insulation and high light transmittance, characterized in that: A display screen protective glass with heat insulation and high light transmittance function applicable to any one of 1-5 above, the production steps of which are as follows: S1, a low-reflection coating (3) is coated on the glass substrates of the outer glass (1) and the inner glass (2); S2, cutting the glass substrates of the outer glass (1) and the inner glass (2) into required sizes, grinding the edges and then cleaning; S3, coating the inner surface of the inner glass (2) with an ink printing layer (5); S4, drying the ink printing layer (5); S5, tempering: performing a tempering treatment on the outer glass (1) and the inner glass (2), and simultaneously completing the sintering of the ink printing layer (5) on the inner surface of the inner glass (2); S6, interlayer lamination: placing the heat-resistant connecting interlayer (4) between the outer glass (1) and the inner glass (2), evacuating or pre-pressing, and then sending them into an autoclave for high-temperature and high-pressure degassing, so that the outer glass (1) and the inner glass (2) as well as the heat-resistant connecting interlayer (4) are connected to form a whole; S7, cooling the heated and solidified glass; S8. Check the thickness, uniformity and quality of the glass, and perform thermal insulation and high light transmittance performance tests; S9, glass is packaged after lamination.

7. The production process of the display screen protective glass with heat insulation and high light transmittance function according to claim 6, characterized in that: In S3, the printing temperature of the ink printing layer (5) is 20-25°C, and the printing humidity is controlled at 40-60%.

8. The production process of the display screen protective glass with heat insulation and high light transmittance function according to claim 6, characterized in that: In S4, the drying temperature range is 140° to 160°, and the drying time is 3 to 5 minutes.

9. The production process of the display screen protective glass with heat insulation and high light transmittance function according to claim 6, characterized in that: In S5, the tempering heating temperature range is 660° to 720°, and the heating time is 6 to 7 minutes.

10. The production process of the display screen protective glass with heat insulation and high light transmittance function according to claim 6, characterized in that: In S7, air cooling is used for rapid cooling and cooling, with a rapid cooling time of 60 to 70 seconds and a cooling time of 70 to 80 seconds.

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