CN112388415A - Preparation method of fingerprint-proof touch screen cover plate - Google Patents
Preparation method of fingerprint-proof touch screen cover plate Download PDFInfo
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- CN112388415A CN112388415A CN202011166926.XA CN202011166926A CN112388415A CN 112388415 A CN112388415 A CN 112388415A CN 202011166926 A CN202011166926 A CN 202011166926A CN 112388415 A CN112388415 A CN 112388415A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Surface Treatment Of Glass (AREA)
Abstract
The invention discloses a preparation method of a fingerprint-proof touch screen cover plate, which comprises the following specific steps: polishing a bonding layer substrate below an AF product by using a polisher to enable the surface appearance Ra of the substrate to reach more than 2.0nm, and then performing AF processing to obtain the anti-fingerprint touch screen cover plate. The invention provides a preparation method of an anti-fingerprint touch screen cover plate, wherein soft polishing treatment is added on the surface of a base material to be processed with AF, so that the surface appearance of the base material combined with the AF reaches more than 2.0nm, the water drop angle of the finally obtained AF product can reach more than 100 degrees after the abrasion resistance of the AF product is 10000 times, for a mobile phone consumer electronic product with a white glass and AF structure, the anti-fingerprint effect of the prepared product can be prolonged by 2-3 times, and for AR + AF, AG + AR + AF touch screen products, AR + AF and AF touch screen products, the anti-fingerprint effect can be prolonged by more than 5 times.
Description
Technical Field
The invention relates to the technical field of anti-fingerprint film indexes, in particular to a preparation method of an anti-fingerprint touch screen cover plate.
Background
Prevent fingerprint AF touch-sensitive screen apron, main application field has: the white glass + AF structure is used for a mobile phone touch screen cover plate, a tablet computer touch screen cover plate and the like; the AR + AF structure is used for touching a computer display screen, a television display screen and the like; the AG + AF structure is used for medical industrial control touch screen cover plates and the like; AG + AR + AF structure, used for vehicle carried display screen, etc.
The existing four types of structures including white glass, AF, AR + AF, AG + AR + AF are manufactured by using a traditional process, the surface appearance Ra of the structure and an AF combination layer can only be below 1.0nm, and the AG layer and the AR layer can not adjust and optimize the surface appearance through self processes, so that the AF is not firmly combined with a lower layer film layer, and the water drop angle can only be more than 100 degrees after 3000 times of sand doping by using an AF wear-resistant evaluation method commonly used in the industry and a common white glass and AF cover plate with the wear-resistant function; the AR + AF cover plates and other three types of cover plates have the water drop angle of more than 100 degrees after the abrasion resistance is only achieved for 1000 times and 1500 times, the actual use of the white glass + AF cover plates (mobile phones) is about 1 year, and the fingerprint AF prevention effect of the touch screen cover plate is basically invalid. AR + AF, AG + AR + AF are insufficient in abrasion resistance and can be used only on the surface of a cover plate of a display screen which is touched infrequently at present.
When the original AF touch screen cover plate is prepared, pure water wet cleaning or plasma dry cleaning is added on a substrate before AF, the obtained AF and a lower bonding layer are not firm enough, and the service life of an anti-fingerprint effect is short after repeated touch use of a user.
Disclosure of Invention
The invention provides a preparation method of a fingerprint-proof touch screen cover plate, which is characterized in that soft polishing treatment is added on the surface of a base material to be processed with AF (AF), so as to improve the adhesive force of the AF and a bonding layer below the AF and prolong the service life of the AF under the effective fingerprint-proof effect.
The technical problem is that the technical scheme adopted by the invention is as follows: a preparation method of a fingerprint-proof touch screen cover plate comprises the following specific steps: polishing a bonding layer substrate below an AF product by using a polisher to enable the surface appearance Ra of the substrate to reach more than 2.0nm, then cleaning, spraying an AF layer, and finally drying to obtain the fingerprint-proof touch screen cover plate.
Further, the polishing wheel on the polishing machine is a wool wheel.
Further, the pressure applied during sanding is 1.0kgf to 1.5 kgf.
Further, in the polishing process, X-axis and Y-axis intersection polishing is carried out on the surface of a product to be processed for one circle respectively, so that polishing treatment on each area is ensured.
Furthermore, the wool wheels with the diameter of 100mm and the thickness of 10mm can polish products with the service life of 50-55 square meters, and the products are discarded after the service life is over. And the grinding failure of the wool wheel after being too smooth is avoided.
Furthermore, the cleaning is to perform pure water wet cleaning firstly and then perform plasma dry cleaning.
Further, in the drying treatment, the product was left standing at room temperature for 12 hours. The room temperature standing drying avoids the invalidation of AF volatilization during heating and baking, and the room temperature drying can ensure that the AF is combined with the surface of the base material more firmly.
Furthermore, the anti-fingerprint touch screen cover plate is of a white glass + AF structure, a white glass + AR + AF structure, a white glass + AG + AR + AF structure, and a bonding layer base material of the AF layer is a white glass layer, an AR layer or an AG layer respectively.
Further, when the base material of the bonding layer is an AR layer, the total color difference delta E of the color difference before and after polishing is controlled to be less than or equal to 0.25.
Further, when the base material of the bonding layer is an AG layer, the difference of Rp change before and after polishing is controlled to be less than or equal to 0.01 mu m.
After the treatment by the method provided by the invention, the abrasion resistance of the finally obtained AF product can be more than 100 degrees after 10000 times, for the mobile consumer electronic products with a white glass and AF structure, the fingerprint prevention effect of the product prepared by the method can be prolonged by 2-3 times, for the AR + AF, AG + AR + AF touch screen products, the fingerprint prevention effect can be prolonged by more than 5 times, and the three structures of AR + AF, AG + AF and AG + AR + AF are led to be widely used in the consumer electronic products.
Drawings
Fig. 1 is a diagram of the polishing route in example 1.
FIG. 2 is a surface topography of a substrate before AF after treatment in example 1 of the present invention.
FIG. 3 is a surface topography of a substrate before AF after treatment in example 2 of the present invention.
FIG. 4 is a surface topography of the substrate before AF spraying in comparative example 1.
FIG. 5 is a surface topography of the substrate before AF spraying in comparative example 2.
Detailed Description
The present invention will be further explained with reference to the following examples and drawings, but the present invention should not be construed as being limited thereto.
Example 1:
processing an AF layer on white glass, which mainly comprises the following steps: performing soft polishing treatment on the surface of the AF surface bonding layer to be processed → pure water wet cleaning → plasma dry cleaning → spraying AF → standing at normal temperature for 12 h.
The method comprises the following specific steps:
1) mounting a high-quality wool wheel with the thickness of 10mm on the head of a grinding machine;
2) rotating a grinding machine, applying a pressure of 1.5kgf, and carrying out X, Y crossing grinding on the surface of the AF layer to be processed of the white glass for one circle respectively so as to ensure that each area is subjected to grinding treatment, wherein the grinding route is shown as figure 1, the surface appearance Ra of the ground substrate is more than 2nm, and the surface appearance of one sample is shown as figure 2; the pressure cannot be too high in the polishing process, so that the bad conditions of polishing and scratching of the appearance are avoided;
3) and after polishing, firstly adopting pure water wet cleaning, then adopting plasma dry cleaning, spraying AF on the polished surface, and finally standing at normal temperature for 12h for drying, thus finishing the treatment.
Preparing the same batch of products according to the method of the embodiment, selecting 5 products to carry out AF life rapid aging abrasion resistance test, wherein 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. Specific results are shown in table 1.
As can be seen from Table 1, after soft polishing treatment is added before AF, the reciprocating wear resistance of the steel wool can reach more than 10000 times of AF surface water drop angle of 100 degrees. However, if soft polishing treatment is not added before AF, the reciprocating wear resistance of the steel wool can only reach 3000-.
TABLE 1
Example 2:
prepare the fingerprint resistant touch screen cover plate of white glass + AR + AF structure, the main steps are: performing soft polishing treatment on the surface of the bonding layer (namely AR) of the AF surface to be processed → wet cleaning of pure water → plasma dry cleaning → spraying AF → standing at normal temperature for 12 h.
The method comprises the following specific steps:
1) mounting a high-quality wool wheel with the thickness of 10mm on the head of a grinding machine;
2) rotating a grinding machine, applying a pressure of 1.2kgf, and carrying out X, Y crossing grinding on the surface of the AF layer to be processed of the white glass for one circle respectively so as to ensure that each area is subjected to grinding treatment, wherein the surface appearance Ra of the ground substrate reaches more than 2nm, and the surface appearance Ra of one sample is 2.161nm as shown in figure 3; the total color difference Delta E of the color variation before and after polishing is less than or equal to 0.25, so that the color variation NG and the scratch NG caused by excessive polishing are avoided;
3) and after polishing, firstly adopting pure water wet cleaning, then adopting plasma dry cleaning, spraying AF on the polished surface, and finally standing at normal temperature for 12h for drying, thus finishing the treatment.
Preparing the same batch of products according to the method of example 2, selecting 5 products to carry out AF life rapid aging abrasion resistance test, wherein 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. The specific results are shown in Table 2.
As can be seen from Table 2, the water drop angle of more than 100 degrees can be reached after 10000 times of reciprocating abrasion resistance tests after soft polishing treatment is added before AF.
TABLE 2
Example 3:
the preparation white glass + AG + AR + AF structure prevent fingerprint touch-sensitive screen apron, the essential step is: performing soft polishing treatment on the surface of the bonding layer (namely AR) of the AF surface to be processed → wet cleaning of pure water → plasma dry cleaning → spraying AF → standing at normal temperature for 12 h.
The method comprises the following specific steps:
1) mounting a high-quality wool wheel with the thickness of 10mm on the head of a grinding machine;
2) rotating a grinding machine, applying a pressure of 1.0kgf, and carrying out X, Y crossed grinding on the surface of the AF layer to be processed of the white glass for one circle respectively so as to ensure that each area is subjected to grinding treatment, wherein the surface appearance Ra of the ground substrate reaches more than 2nm, and the change of the surface appearance Rp of the substrate before and after grinding is less than or equal to 0.01 mu m; the total color difference delta E before and after polishing is 0.06, so that color change NG and scratching NG caused by excessive polishing are avoided;
3) and after polishing, firstly adopting pure water wet cleaning, then adopting plasma dry cleaning, spraying AF on the polished surface, and finally standing at normal temperature for 12h for drying, thus finishing the treatment.
Preparing the same batch of products according to the method of example 3, selecting 5 products to carry out AF life rapid aging abrasion resistance test, wherein 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. The specific results are shown in Table 3.
As can be seen from Table 3, after the reciprocal abrasion resistance test, the water drop angle of > 100 ° can be reached 10000 times.
TABLE 3
Example 4:
the preparation white glass + AG + AF structure prevent fingerprint touch-sensitive screen apron, the essential step is: the surface of the bonding layer (AG) of the AF surface to be processed is subjected to soft polishing treatment → pure water wet cleaning → plasma dry cleaning → spraying AF → normal temperature standing for 12 h.
The method comprises the following specific steps:
1) mounting a high-quality wool wheel with the thickness of 10mm on the head of a grinding machine;
2) rotating a grinding machine, applying a pressure of 1.0kgf, and carrying out X, Y crossed grinding on the surface of the AF layer to be processed of the white glass for one circle respectively so as to ensure that each area is subjected to grinding treatment, wherein the surface appearance Ra of the ground substrate reaches more than 2nm, and the surface appearance Rp change of the substrate before and after grinding reaches 0.0004 mu m; AG is a concave-convex product formed by ordinary glass after corrosion, and the original concave-convex is flattened due to excessive polishing, so that the concave-convex diffuse reflection effect cannot be realized;
3) and after polishing, firstly adopting pure water wet cleaning, then adopting plasma dry cleaning, spraying AF on the polished surface, and finally standing at normal temperature for 12h for drying, thus finishing the treatment.
Preparing the same batch of products according to the method of example 4, selecting 5 products to carry out AF life rapid aging abrasion resistance test, wherein 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. The specific results are shown in Table 4.
As can be seen from Table 4, after the reciprocal abrasion resistance test, the water drop angle of > 100 ° can be reached 10000 times.
TABLE 4
Comparative example 1:
the method comprises the following steps of preparing the anti-fingerprint touch screen cover plate with the white glass layer and the AR + AF layer, and adopting the specific process of plasma dry cleaning → spraying AF → baking (150 ℃ and 40 min).
The surface topography of the substrate before AF spraying is shown in FIG. 4, and the Ra value is 0.839 nm.
The AF life rapid aging abrasion resistance test is carried out on a comparative product, 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the abrasion speed is 40 cycles/min, and the abrasion stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. The specific results are shown in Table 5. It can be seen that the drop angle approaches 100 deg. after 1500 reciprocations.
TABLE 5
Comparative example 2:
the method comprises the following steps of preparing the anti-fingerprint touch screen cover plate with the white glass layer and the AR + AF layer, and adopting the specific process of plasma dry cleaning → spraying AF → baking (150 ℃ and 40 min). The Ra value of the surface of the substrate before AF spraying was 0.807 nm.
The AF life rapid aging abrasion resistance test is carried out on a comparative product, 0000# steel wool is used in the test, the angle is vertical, 1Kgf force is applied, the area of a pressure head is 2cm x 2cm, the abrasion speed is 40 cycles/min, and the abrasion stroke is 50 mm; the initial water contact angle before rubbing is required to be more than or equal to 110 degrees, and the water contact angle after rubbing is required to be more than or equal to 100 degrees. The specific results are shown in Table 6. It can be seen that the drop angle approaches 100 deg. after 1500 reciprocations.
TABLE 6
Comparative example 3:
in the same manner as in example 2, the dresser pressure was controlled to 2.0kgf only during the dressing. The test results are shown in table 7 below.
TABLE 7
The chroma delta E change amount before and after soft polishing reaches 0.55, and the polishing pressure is too large, so that the AR color heterochrosis NG is caused.
Comparative example 4:
in the same manner as in example 2, the dresser pressure was controlled to be 0.5kgf only during the dressing. The test results are shown in table 8 below.
TABLE 8
As can be seen from Table 8, the chromaticity delta E variation before and after soft polishing meets the requirements, but the AF is not firmly combined with the base material, the abrasion resistance test can only meet the requirements of reciprocating 3000 times, and the water drop angle is more than 100 degrees.
Claims (10)
1. A preparation method of a fingerprint-proof touch screen cover plate is characterized by comprising the following specific steps: polishing a bonding layer substrate below an AF product by using a polisher to enable the surface appearance Ra of the substrate to reach more than 2.0nm, then cleaning, spraying an AF layer, and finally drying to obtain the fingerprint-proof touch screen cover plate.
2. The method of claim 1, wherein: the polishing wheel on the polishing machine is a wool wheel.
3. The method of claim 2, wherein: the pressure applied during sanding is 1.0kgf to 1.5 kgf.
4. The production method according to claim 3, characterized in that: in the polishing process, X-axis and Y-axis intersection polishing is carried out on the surface of a product to be processed for one circle respectively so as to ensure that each area is polished.
5. The method of claim 1, wherein: the wool wheel with the diameter of 100mm and the thickness of 10mm can polish products with the service life of 50 square meters to 55 square meters, and the products can be discarded after the service life is finished.
6. The method of claim 1, wherein: the cleaning is to perform pure water wet cleaning firstly and then perform plasma dry cleaning.
7. The method of claim 1, wherein: for the drying treatment, the product was allowed to stand at room temperature for 12 hours.
8. The production method according to any one of claims 1 to 7, characterized in that: the fingerprint-proof touch screen cover plate is of four structures of white glass + AF, white glass + AR + AF, white glass + AG + AR + AF, wherein the bonding layer base material of the AF layer is a white glass layer, an AR layer or an AG layer respectively.
9. The method of claim 8, wherein: and when the base material of the bonding layer is an AR layer, controlling the total color difference delta E of the color difference before and after polishing to be less than or equal to 0.25.
10. The method of claim 9, wherein: and when the base material of the bonding layer is AG, controlling the variation difference of Rp before and after polishing to be less than or equal to 0.01 mu m.
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| CN113485574A (en) * | 2021-06-29 | 2021-10-08 | 宜昌南玻显示器件有限公司 | Touch screen with anti-dazzle, anti-reflection and anti-fingerprint functions |
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