Protective glass, separant, application of separant and display equipment

Abstract

The invention discloses protective glass, an isolating agent, application of the isolating agent and display equipment, the protective glass comprises a glass body and an isolating membrane layer arranged on at least one surface of the glass body, the isolating membrane layer can inhibit alkali precipitation reaction of soda-lime glass, especially alkali precipitation reaction on the back surface of the glass, and the isolating membrane layer can inhibit alkali precipitation reaction of the soda-lime glass, especially alkali precipitation reaction on the back surface of the glass. And the surface energy difference of the back surface of the glass can be eliminated, so that the whole surface energy becomes more uniform. The protective glass is good in optical transparency, clear in imaging, high in glossiness, low in Ra roughness and high in Rsm roughness, the problem of poor watermarks of a whole machine can be solved, and the protective glass can be adopted for improvement as long as soda-lime glass is used in other industries.

Description

Technical Field

[0001] The present application relates to the field of glass processing technology, and in particular to a protective glass, an isolation agent and its application, and a display device. Background Art

[0002] Currently, the main processes used by manufacturers for producing AG glass (anti-glare glass) include: the first, spray-coated AG process, which involves slicing, edging, tempering, silk-screening, front-side spray-coating, polishing, packaging, cleaning, laminating, and vacuum packaging. Glass assembly processes include glass storage, cleaning, and lamination. The primary process for spray-coating AG involves pre-processing the glass, which includes shaping the glass, tempering, and post-processing, which includes silk-screening the inner surface, plasma cleaning, and polishing the outer surface. Finally, the AG coating is sprayed, polished, and then cleaned. Finally, the AG coating is inspected, packaged, and shipped.

[0003] The second is the AG etching process: cleaving + front AG etching + cleaning + cleaving + edging + tempering + silk screen printing + packaging and cleaning + laminating, vacuum packaging. The glass assembly process at the factory includes glass storage + glass cleaning + lamination into a complete device. The main process is AG etching: the main method is to pre-treat the glass, which includes cleaving the glass, then apply an acid-resistant film to the inner surface of the glass, immerse it in an etching solution, and then undergo post-processing, which includes shaping the glass, tempering, silk screen printing on the inner surface of the glass, and flat cleaning. Finally, it is inspected, packaged, and shipped.

[0004] The main problems are: 1. During the entire processing process, the back of the glass (i.e., the surface facing the circuit board during the assembly process) comes into contact with many things, such as drive belts, drive rollers, Teflon, suction cups, abrasive powder used for rework of minor scratches, glass laminates, wipes, silicone oil precipitated from ink baking, various dusts, and even sweat from people when lifting; 2. The inherent physical property of soda-lime glass is alkali precipitation. The sodium ions in the glass body undergo a series of physical and chemical reactions when encountering water and CO2 to generate alkaline crystals on the glass surface. During the storage, transportation and use of the entire machine, the high temperature and high humidity environment is difficult to control, which further accelerates the alkali precipitation reaction on the back of the glass, forming spots, marks, lines, whitening, rainbow patterns and other undesirable phenomena. Summary of the Invention

[0005] In view of this, the present application provides a protective glass, an isolation agent, and its application, and a display device. The isolation film layer in the protective glass can inhibit the alkali precipitation reaction of soda-lime glass, especially the alkali precipitation reaction on the back of the glass, and can also eliminate the surface energy difference on the back of the glass to make the entire surface energy more uniform.

[0006] In the first aspect, the present application provides a protective glass, which includes a glass body and an isolation film layer arranged on at least one surface of the glass body, and satisfies at least one of the following conditions: Condition i: the transmittance of the protective glass at a wavelength of 380nm~780nm is T, 88%≤T≤92%; Condition ii: the haze of the protective glass is W, 0.5%≤W≤1%; Condition iii: the DOI value of the protective glass is 90~95; Condition iv: the glossiness of the protective glass is D, 110GU≤D≤130GU; Condition v: the Ra roughness of the protective glass is M, 0.05μm≤M≤0.1μm; Condition vi: the Rsm roughness of the protective glass is M′, 40μm≤M′≤100μm; Condition vii: the pencil hardness grade of the protective glass is G, G≥9H; Condition viii: the thickness of the isolation film layer is H, 0.5μm≤H≤1.5μm. The protective glass described in this application exhibits high light transmittance, low haze, and high DOI values ​​at wavelengths between 380nm and 780nm, demonstrating excellent optical transparency and clear imaging. Furthermore, the protective glass exhibits high gloss, low Ra roughness, and high Rsm roughness, enhancing its appearance while maintaining stable integration with other components. Furthermore, when the thickness of the isolation film layer falls within the aforementioned range, it can effectively block the migration and precipitation of sodium ions without affecting the display quality of the protective glass.

[0007] In some embodiments, the isolation film layer is formed by spraying an isolation agent on at least one surface of the glass body and then baking it. The isolation agent comprises, by weight percentage, 60% to 80% ethanol, 5% to 10% silica sol, and 20% to 30% alkyd resin, the alkyd resin comprises a drying short-oil alkyd resin, and the oil or fatty acid content of the drying short-oil alkyd resin is 30% to 40%. The baking temperature is 200°C to 260°C, and the baking time is 30 minutes to 60 minutes. In this way, the isolation film layer obtained after baking can, on the one hand, prevent the precipitation of sodium ions in the soda-lime glass, avoid the alkali precipitation reaction on the back of the glass under high temperature and high humidity during storage, transportation and use of the whole machine, and eliminate spots, marks, lines, whitening, rainbow lines and other undesirable phenomena. On the other hand, the isolation film layer obtained after baking can better adhere to the surface of the soda-lime glass (glass body), further improving the high temperature and high humidity resistance of the protective glass.

[0008] In some embodiments, the mass percentage of silicon dioxide in the silica sol is 60 wt % to 80 wt %. In this case, the insulating film layer obtained after baking has a better effect of inhibiting the precipitation of sodium ions in the soda-lime glass.

[0009] In some embodiments, the glass body comprises, by weight, 71.5% to 73% SiO2, 12% to 15% Na2O, 8% to 11% CaO, and 0.5% to 1.0% Al2O3.

[0010] In some embodiments, a light-shielding ink is further provided between the glass body and the isolation film layer, the light-shielding ink is coated on the inner surface of the glass body (i.e., the surface of the glass body facing the circuit board when the glass body is configured in the display device), and the isolation film layer is coated on the light-shielding ink.

[0011] In some embodiments, pits or convex patterns are further formed on the inner surface of the glass body, and the isolation film layer completely covers the pits or the convex patterns.

[0012] In some embodiments, the protective glass further has an outer surface opposite to the inner surface, and a processing layer is provided on the outer surface, and the processing layer includes any one or more layers of an anti-fingerprint processing layer, an anti-reflection and anti-reflection processing layer, and an anti-glare processing layer.

[0013] In the second aspect, the present application provides an isolation agent, which comprises, by weight percentage, 60% to 80% ethanol, 5% to 10% silica sol and 20% to 30% alkyd resin, wherein the selection of the silica sol and the alkyd resin can be the same as the silica sol and alkyd resin in the first aspect, and will not be repeated here.

[0014] In a third aspect, the present application provides the use of the above-mentioned isolation agent in improving the alkali precipitation reaction on the back side of commercial display glass.

[0015] In some embodiments, the application includes spraying the release agent on the back side of the commercial display glass and then baking the release agent.

[0016] In some embodiments, the baking temperature is 200° C. to 260° C., and the baking time is 30 min to 60 min. The back side of the commercial display glass refers to the inner surface of the commercial display glass, that is, the surface facing the circuit board when the commercial display glass is configured in the display device.

[0017] In a fourth aspect, the present application provides a display device, comprising a display module and protective glass, wherein a display screen is mounted on the display module, and the protective glass covers the display screen and is spaced apart from the display screen, wherein the protective glass is the protective glass of the first aspect mentioned above.

[0018] In some embodiments, the protective glass includes a glass body and an isolation film layer arranged on at least one surface of the glass body. The isolation film layer is sprayed with the isolation agent of the second aspect and then baked. The baking temperature is 200°C to 260°C, and the baking time is 30min to 60min.

[0019] The beneficial effects of the technical solutions provided by some embodiments of the present application include at least:

[0020] 1) The present application provides a protective glass comprising a glass body and an isolation film layer disposed on the glass body. The isolation film layer is capable of inhibiting the alkali precipitation reaction of soda-lime glass, especially the alkali precipitation reaction on the back side of the glass, without affecting the display effect of the protective glass.

[0021] 2) The cover glass described in this application has high light transmittance, low haze value and high DOI value, indicating good optical transparency and clear imaging;

[0022] 3) The protective glass of the present application has high gloss, low Ra roughness, and high Rsm roughness, which shows that it has better appearance quality and takes into account the stability of cooperation with other components;

[0023] 4) The isolation film layer in this application has good adhesion to the surface of the soda-lime glass, further improving the high temperature and high humidity resistance of the protective glass;

[0024] 5) The protective glass described in this application can not only improve the watermark problem of the entire machine, but can also be used to improve other industries where soda-lime glass is used. The process is simple, the operation is easy, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of an embodiment of a display device of the present application;

[0027] Figure 2 This is a structural diagram of another embodiment of the display device of the present application.

[0028] In the figure: 100, display device; 10, display module; 11, display screen; 20, protective glass; 21, inner surface; 211, pits; 212, convex patterns; 22, outer surface; 30, isolation film layer; 40, light-shielding ink; 50, gap; 60, processing layer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0030] When soda-lime glass in the prior art is used in a high-temperature, high-humidity environment for a long time, water vapor enters the inner surface of the glass and contacts the inner surface of the glass with different surface energy. The water vapor liquefies and then evaporates. The repeated liquefaction and evaporation process accelerates the reaction, inevitably resulting in localized watermark defects. The longer the watermark is used, the more obvious it becomes, seriously affecting the user experience. The source is still the alkali precipitation characteristics of soda-lime glass and the surface energy differences on the inner surface of the glass, coupled with the usage environment, which ultimately cause the defects. Therefore, the present application provides a protective glass, a release agent, and its application, and a display device to solve the above technical problems.

[0031] Release agent

[0032] The invention comprises, by weight percentage, 60% to 80% of ethanol, 5% to 10% of silica sol and 20% to 30% of alkyd resin, wherein the alkyd resin comprises a drying short-oil alkyd resin, and the oil or fatty acid content of the drying short-oil alkyd resin is 30% to 40%.

[0033] Illustratively, the ethanol content is 60%, 65%, 70%, 75%, 80% or a range consisting of any two of the above values.

[0034] Illustratively, the content of the silica sol is 5%, 6%, 7%, 8%, 9%, 10% or a range consisting of any two of the above values.

[0035] Illustratively, the content of the alkyd resin is 20%, 22%, 24%, 26%, 28%, 30%, or a range consisting of any two of the above values.

[0036] In some embodiments, the mass percentage of silicon dioxide in the silica sol is 60 wt % to 80 wt %.

[0037] Illustratively, the mass percentage of silicon dioxide in the silica sol is 60 wt%, 65 wt%, 70 wt%, 75 wt%, 80 wt% or a range consisting of any two of the above values.

[0038] It should be noted that, unlike the existing release agent mainly used for the outer surface of the display device 100, the release agent of the present application is originally designed to be used for the surface of the soda-lime protective glass 20 located inside the display device 100 (i.e. Figure 1 The inner surface 21 in the film, the preparation method of the release agent can refer to the conventional means of the prior art.

[0039] Protective glass

[0040] The invention comprises a glass body and an isolation film layer disposed on at least one surface of the glass body, wherein the isolation film layer has a thickness H, 0.5 μm ≤ H ≤ 1.5 μm. For example, the thickness of the isolation film layer is 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm, or a range consisting of any two of the foregoing values.

[0041] In some embodiments, the transmittance of the protective glass at a wavelength of 380 nm to 780 nm is T, and 88%≤T≤92%. For example, the transmittance of the protective glass is 88%, 89%, 90%, 91%, 92%, or a range consisting of any two of the above values.

[0042] In some embodiments, the haze of the protective glass is W, 0.5%≤W≤1%. Exemplarily, the haze of the protective glass is 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, or a range consisting of any two of the above values.

[0043] In some embodiments, the DOI value of the protective glass is 90 to 95. For example, the DOI value of the protective glass is 90, 91, 92, 93, 94, 95, or a range consisting of any two of the above values.

[0044] In some embodiments, the glossiness of the protective glass is D, 110GU≤D≤130GU. For example, the glossiness of the protective glass is 110GU, 115GU, 120GU, 125GU, 130GU, or a range consisting of any two of the above values.

[0045] In some embodiments, the Ra roughness of the cover glass is M, 0.05 μm≤M≤0.1 μm. For example, the Ra roughness of the cover glass is 0.05 μm, 0.06 μm, 0.07 μm, 0.08 μm, 0.09 μm, 0.1 μm, or a range consisting of any two of the above values.

[0046] In some embodiments, the Rsm roughness of the cover glass is M′, 40 μm ≤ M′ ≤ 100 μm. For example, the Rsm roughness of the cover glass is 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, or a range consisting of any two of the above values.

[0047] In some embodiments, the protective glass has a pencil hardness rating of G, where G≥9H.

[0048] Method for preparing protective glass

[0049] Before packaging and cleaning in the original glass factory, an additional process (spraying isolation coating) is added to the inner surface of the glass. The first is after the spraying AG process is changed: opening + edging + tempering + silk screen + front spraying AG coating + AG surface grinding + back spraying isolation coating + high temperature baking + packaging and cleaning + laminating and vacuum packaging. The process of glass in the assembly plant: glass storage + corona + glass cleaning + bonding into a complete machine. The second is after the etching AG process is changed: opening + front etching AG + cleaning + opening + edging + tempering + silk screen + back spraying isolation coating + high temperature baking + packaging and cleaning + laminating and vacuum packaging. The process of glass in the assembly plant: glass storage + corona + glass cleaning + bonding into a complete machine.

[0050] Exemplarily, the spraying method includes preparing the glass to be processed and the aforementioned release agent, and then spraying the release agent onto the surface of the glass to be processed through a spraying process. The spraying process parameters include: nozzle pressure of 3 MPa to 7 MPa, number of nozzles 3-5, nozzle diameter of 0.3 ± 0.06 mm, nozzle speed of 0.1 ± 0.02 m / min, nozzle flow rate of 20-40 ml / min, atomization pressure of 0.1-0.2 MPa, distance between the nozzle and the glass to be processed of 100 ± 20 mm, release agent flow rate of 30 ± 6 g / min, fan pressure of the release agent spray of 0.3-0.5 MPa, glass transmission speed of 1-4 m / min, temperature inside the sprayer controlled at 30 ± 5°C, and humidity controlled at 45 ± 10%.

[0051] The spraying method of the isolation film layer 30 of the present application adopts the above spraying parameters to spray the isolation agent onto the inner surface 21 of the protective glass 20, which can form an isolation film layer 30 with good uniformity, high stability, high transparency, strong adhesion, and resistance to high heat and humidity on the protective glass 20, thereby avoiding the formation of spots, marks, lines, whitening, rainbow patterns and other undesirable phenomena on the inner surface 21 of the protective glass 20.

[0052] It should also be noted that when setting the spraying parameters, it is generally necessary to set the movement path of the nozzle. In the embodiment of the present application, the nozzle moves along a W-shaped path, which can improve the spraying efficiency and ensure that the release agent fully and evenly covers the protective glass 20. Of course, other movement paths can also be set according to the needs, such as setting the movement path to a U-shape, an L-shape, etc.

[0053] Display devices

[0054] See also Figure 1 The display device 100 includes a display module 10 and a protective glass 20. A display screen is mounted on the display module. The protective glass covers the display screen and is spaced apart from the display screen. The display module 10 is an LCM display module 10 and is mounted with a display screen 11, which is a liquid crystal display 11. The protective glass 20 is mounted on the display screen 11 using a zero-fit method. In this case, the protective glass 20 covers the display screen 11 and is spaced apart from the display screen 11. Furthermore, the protective glass 20 has an inner surface 21 facing the display screen 11. The inner surface 21 is coated with an isolation film layer 30. The isolation film layer 30 is formed by spraying and baking the isolation agent of any of the above embodiments. It should be noted that when the protective glass 20 is installed on the display screen 11 through a zero-fit installation method, there will be a certain gap 50 between the protective glass 20 and the display screen 11. The gap 50 is small, which makes it difficult for the water vapor in the gap 50 to be discharged or lost. Then, the water vapor in the gap 50 is easy to react with the sodium ions in the protective glass 20, thereby generating a watermark on the inner surface 21 of the protective glass 20.

[0055] In one embodiment, continue to refer to Figure 1 , the inner surface 21 of the protective glass 20 is also provided with a light-shielding ink 40. This light-shielding ink 40 extends along the periphery of the inner surface 21 and is in the form of a ring. For example, when the inner surface 21 of the protective glass 20 is rectangular, the light-shielding ink 40 is in the form of a square ring, thereby effectively preventing light leakage from the display device 100. However, the light-shielding ink 40 is generally made of an organic material, while the protective glass 20 is generally made of an inorganic material. The adhesion between organic and inorganic materials is generally weak, and the light-shielding ink 40 is prone to falling off from the protective glass 20 during use. Therefore, in this embodiment, the isolation film layer 30 covers the light-shielding ink 40. The strong adhesion of the isolation film layer 30 to the protective glass 20 can reduce the risk of the light-shielding ink 40 falling off and improve the adhesion stability of the light-shielding ink 40 to the protective glass 20.

[0056] In one embodiment, referring to Figure 2As shown, the inner surface 21 is further formed with pits 211 or ridges 212, which are completely covered by the isolation film layer. It is understood that during the processing of the cover glass 20, due to factors such as insufficient process precision, thermal deformation, stress deformation, and debris extrusion, minor defects such as pits 211 or ridges 212 may inevitably form on the surface of the cover glass 20, thereby affecting the yield rate of the cover glass 20. Therefore, in this embodiment, by ensuring that the isolation film layer 30 completely covers the pits 211 or ridges 212 on the inner surface 21, the surface flatness of the cover glass 20 can be improved, thereby increasing the yield rate.

[0057] In one embodiment, continue to refer to Figure 2 As shown, the protective glass 20 also has an outer surface 22 opposite the inner surface 21. A treatment layer 60 is applied to the outer surface 22. The treatment layer 60 may include one or more of an anti-fingerprint treatment layer 60, an anti-reflection and anti-reflection treatment layer 60, and an anti-glare treatment layer 60. The anti-fingerprint treatment layer 60, based on the lotus leaf principle, minimizes the surface tension of the glass, reducing the contact area between dust and the outer surface 22 by 90%. This makes the outer surface 22 highly hydrophobic, oil-resistant, and fingerprint-resistant, ensuring that the viewing glass panel maintains a smooth and bright appearance over time. The anti-reflection and anti-reflection treatment layer 60 enhances the transmittance of the protective glass 20 by increasing its light transmittance and reducing its reflectivity, thereby increasing its light transmittance. The anti-glare treatment layer 60 achieves a multi-angle diffuse reflection effect through special treatment on one or both sides of the glass surface, thereby improving the viewing angle, reducing ambient light interference, and reducing screen glare, thereby achieving a better visual effect. The specific formation methods of the anti-fingerprint processing layer 60 , the anti-reflection and anti-reflection processing layer 60 and the anti-glare processing layer 60 may refer to the existing technology and are not specifically limited here.

[0058] Hereinafter, embodiments of the present application will be described in more detail with reference to examples and comparative examples.

[0059] Taking soda-lime glass measuring 200 cm long, 140 cm wide, and 4 mm thick as an example, the release agent shown in Table 1 was sprayed onto the inner surface of the soda-lime glass using the following spraying process. The spraying parameters included: nozzle pressure of 4 MPa, number of nozzles (3), nozzle diameter of 0.3 mm, nozzle speed of 0.1 m / min, nozzle flow rate of 35 ml / min, atomization pressure of 0.2 MPa, distance between nozzle and glass to be processed of 110 mm, release agent flow rate of 35 g / min, release agent fan pressure of 0.4 MPa, glass transmission speed of 2 m / min, sprayer temperature of 33°C, and humidity of 45%. The baking temperature was 250°C, and the baking time was 40 minutes. The test conditions were high temperature and high humidity (85°C, 85% relative humidity), and the test duration was 312 hours. The test results are shown in Table 1.

[0060] Evaluation results of the high temperature and high humidity test: Under 1000 illumination, if there is no watermark defect at a distance of 1 meter, it is judged as OK, and if there is a defective watermark, it is judged as NG.

[0061] Evaluation results of display effect: If the test results of transmittance T, haze, DOI value, gloss D, Ra roughness and Rsm roughness of the protective glass are all within the range described in this application, it is judged as OK. If any of the parameters is not within the range described in this application, it is judged as NG.

[0062] Comprehensive conclusion evaluation method: When the conclusion of any one of the high temperature and high humidity test and display effect evaluation is NG, the comprehensive conclusion is NG.

[0063] Table 1

[0064]

[0065]

[0066] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A protective glass, characterized in that: The protective glass includes a glass body and an isolation film layer provided on at least one surface of the glass body, and satisfies at least one of the following conditions: Condition i: The transmittance of the protective glass at a wavelength of 380 nm to 780 nm is T, 88% ≤ T ≤ 92%; Condition ii: The haze of the protective glass is W, 0.5% ≤ W ≤ 1%; Condition iii: the DOI value of the protective glass is 90-95; Condition iv: The glossiness of the protective glass is D, 110GU≤D≤130GU; Condition v: The Ra roughness of the protective glass is M, 0.05 μm ≤ M ≤ 0.1 μm; Condition vi: The Rsm roughness of the cover glass is M′, 40 μm ≤ M′ ≤ 100 μm; Condition vii: The pencil hardness of the protective glass is G, G ≥ 9H; Condition viii: The thickness of the isolation film layer is H, 0.5 μm≤H≤1.5 μm.

2. The protective glass according to claim 1, wherein: The isolation film layer is formed by spraying an isolation agent on at least one surface of the glass body and then baking the coating; The baking temperature is 200° C. to 260° C., and the baking time is 30 min to 60 min.

3. The protective glass according to claim 2, wherein: The release agent comprises, by weight percentage, 60% to 80% of ethanol, 5% to 10% of silica sol and 20% to 30% of alkyd resin; The alkyd resin comprises a drying short-oil alkyd resin, and the oil or fatty acid content of the drying short-oil alkyd resin is 30% to 40%.

4. The protective glass according to claim 3, wherein: The mass percentage of silicon dioxide in the silica sol is 60 wt % to 80 wt %.

5. The protective glass according to claim 1, wherein: The glass body comprises, by weight percentage, 71.5% to 73% of SiO2, 12% to 15% of Na2O, 8% to 11% of CaO and 0.5% to 1.0% of Al2O3.

6. A release agent, characterized in that The release agent comprises, by weight percentage, 60% to 80% of ethanol, 5% to 10% of silica sol and 20% to 30% of alkyd resin; The alkyd resin comprises a drying short-oil alkyd resin, and the oil or fatty acid content of the drying short-oil alkyd resin is 30% to 40%.

7. The release agent according to claim 6, characterized in that The mass percentage of silicon dioxide in the silica sol is 60 wt % to 80 wt %.

8. Use of the release agent according to any one of claims 6 to 7 in improving the alkali precipitation reaction on the back side of commercial display glass; The application includes spraying the release agent on the back of the commercial display glass and then baking it; The baking temperature is 200°C to 260°C, and the baking time is 30min to 60min; in, The back side of the commercial display glass refers to the surface of the commercial display glass facing the circuit board when the commercial display glass is configured in the display device.

9. A display device, characterized in that: The display device includes a display module and a protective glass. A display screen is mounted on the display module. The protective glass covers the display screen and is spaced apart from the display screen. The protective glass satisfies at least one of the following conditions: Condition (1): The transmittance of the protective glass at a wavelength of 380 nm to 780 nm is T, 88% ≤ T ≤ 92%; Condition (2): The haze of the protective glass is W, 0.5%≤W≤1%; Condition (3): The DOI value of the protective glass is 90-95; Condition (4): The glossiness of the protective glass is D, 110GU≤D≤130GU; Condition (5): The Ra roughness of the protective glass is M, 0.05 μm ≤ M ≤ 0.1 μm; Condition (6): The Rsm roughness of the protective glass is M′, 40 μm ≤ M′ ≤ 100 μm; Condition (7): The pencil hardness grade of the protective glass is G, G≥9H.

10. The display device according to claim 9, wherein The protective glass comprises a glass body and an isolation film layer provided on at least one surface of the glass body, wherein the isolation film layer is formed by spraying the isolation agent according to any one of claims 6 to 7 and then baking; After baking, the thickness of the isolation film layer is H, 0.5 μm≤H≤1.5 μm; The baking temperature is 200° C. to 260° C., and the baking time is 30 min to 60 min.

Images