CN112388415B - 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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- CN112388415B CN112388415B CN202011166926.XA CN202011166926A CN112388415B CN 112388415 B CN112388415 B CN 112388415B CN 202011166926 A CN202011166926 A CN 202011166926A CN 112388415 B CN112388415 B CN 112388415B
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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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Abstract
The invention discloses a preparation method of an anti-fingerprint touch screen cover plate, which comprises the following specific steps: polishing a bonding layer substrate below an AF product by using a polishing machine to enable the surface morphology Ra of the substrate to reach more than 2.0nm, and then performing AF processing to obtain the fingerprint-proof touch screen cover plate. The invention provides a preparation method of an anti-fingerprint touch screen cover plate, which is characterized in that soft polishing treatment is added on the surface of a substrate to be processed AF, so that the surface morphology of the substrate of an AF bonding layer reaches more than 2.0nm, the abrasion resistance of the finally obtained AF product can be more than 100 degrees after 10000 times, the anti-fingerprint effect of the prepared product is prolonged by 2-3 times for mobile phone consumer electronic products with white glass and AF structures, and the anti-fingerprint effect is prolonged by more than 5 times for AR+AF, AG+AF and AG+AR+AF touch screen products.
Description
Technical Field
The invention relates to the technical field of fingerprint-proof film indexes, in particular to a preparation method of a fingerprint-proof touch screen cover plate.
Background
Fingerprint AF touch-sensitive screen apron is prevented, and main application area has: the white glass and 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; AG+AF structure, is used for medical etc. industrial control touch-sensitive screen cover plate; AG+AR+AF structure for on-vehicle display screen etc.
The existing four structural products of white glass +AF, AR +AF, AG +AR +AF are manufactured by using the traditional process, the surface morphology Ra of the AF combination layer can only be below 1.0nm, the AG layer and the AR layer can not be adjusted and optimized by the process of the AG layer and the AR layer, so that AF is not firmly combined with the lower film layer, and the common white glass +AF cover plate can only achieve a water drop angle of more than 100 degrees after 3000-5000 times by using the AF abrasion resistance evaluation method commonly used in industry; the other three cover plates such as AR+AF can only achieve a water drop angle of more than 100 degrees after 1000-1500 times of abrasion, the actual user of the white glass+AF cover plate (mobile phones) uses the cover plate for about 1 year, and the fingerprint AF prevention effect of the touch screen cover plate is basically invalid. AR+AF, AG+AF, AG+AR+AF can only be used on the surface of a display screen cover plate which is not touched frequently at present because of insufficient wear resistance.
When the original AF touch screen cover plate is prepared, pure water wet cleaning or plasma dry cleaning is added to an AF front substrate, the obtained AF and a bonding layer below the AF front substrate are not firm enough, and the service life of the anti-fingerprint effect is short after repeated touching and use by a user.
Disclosure of Invention
The invention provides a preparation method of an anti-fingerprint touch screen cover plate, which is characterized in that soft polishing treatment is added on the surface of a substrate to be processed AF so as to improve the adhesive force of the AF and a bonding layer below the AF and prolong the service life under the effective anti-fingerprint effect.
The technical scheme adopted by the invention is as follows: the preparation method of the fingerprint-proof touch screen cover plate comprises the following specific steps: polishing a bonding layer substrate below an AF product by adopting a polishing machine to ensure that the surface morphology Ra of the substrate reaches more than 2.0nm, then cleaning, spraying an AF layer, and finally drying to obtain the fingerprint-proof touch screen cover plate.
Further, the grinding wheel on the grinding machine is a wool wheel.
Further, the pressure applied during polishing was 1.0kgf to 1.5kgf.
Further, in the polishing process, X-axis and Y-axis crossed polishing is carried out on the surface of the product to be processed for one circle, so that each area is ensured to be polished.
Further, the wool wheel 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 scrapped after the service life is finished. Avoid polishing inefficacy after the wool wheel is too smooth.
Further, the cleaning is to perform pure water wet cleaning first and then perform plasma dry cleaning.
Further, at the time of the drying treatment, the product was left to stand at room temperature for 12 hours. And the AF is prevented from volatilizing and losing efficacy when the substrate is heated and baked by standing and drying at room temperature, and the AF can be firmly combined with the surface of the substrate by drying at normal temperature.
Further, the fingerprint-proof touch screen cover plate has four structures of white glass +AF, white glass +AR +AF, white glass +AG +AR +AF, wherein the substrate of the binding layer 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 bonding layer substrate is AG layer, the variation difference of Rp before and after polishing is controlled to be less than or equal to 0.01 mu m.
After the AF product is treated by the method provided by the invention, the abrasion resistance of the AF product can be more than 100 degrees after 10000 times, for the mobile phone consumer electronic product with a white glass and AF structure, the fingerprint prevention effect of the AF product prepared by the method is prolonged by 2-3 times, for the AR+AF, AG+AF, AG+AR+AF type touch screen products, the fingerprint prevention effect is prolonged by more than 5 times, and the wide application of three structural products of AR+AF, AG+AF and AG+AR+AF in the consumer electronic products is led.
Drawings
FIG. 1 is a polishing route diagram of example 1.
FIG. 2 is a graph showing the surface topography of the substrate before AF after treatment in example 1 of the present invention.
FIG. 3 is a graph showing the surface topography of the substrate before AF after treatment in example 2 of the present invention.
FIG. 4 is a graph showing the surface topography of a substrate before AF-spraying in comparative example 1.
FIG. 5 is a graph showing the surface topography of a substrate before AF-spraying in comparative example 2.
Detailed Description
The invention is further illustrated below with reference to examples and figures, but should not be construed as limiting the invention.
Example 1:
the AF layer is processed on the white glass, and the main steps are as follows: soft polishing treatment of the surface of the AF surface bonding layer to be processed, wet cleaning by pure water, plasma dry cleaning, AF spraying and standing for 12 hours at normal temperature.
The method comprises the following specific steps:
1) Mounting a 10mm thick high quality wool wheel to the sander head;
2) Rotating a grinding machine, applying a pressure of 1.5kgf, and grinding the surface of the AF layer to be processed of the white glass for one circle in a X, Y crossing way to ensure that each area is subjected to grinding treatment, wherein the grinding route is shown in figure 1, the surface topography Ra of a ground substrate reaches more than 2nm, and the surface topography of one sample is shown in figure 2; the pressure in the polishing process cannot be excessively heavy, so that the defect of polishing scratch of the appearance is avoided;
3) After polishing treatment, pure water wet cleaning is adopted, plasma dry cleaning is adopted, AF is sprayed on the polished surface, and finally, standing is carried out for 12 hours at normal temperature for drying, and the treatment is completed.
Preparing the same batch of products according to the method of the embodiment, selecting 5 products for AF life quick aging abrasion resistance test, wherein 0000# steel wool is used for the test, the angle is vertical, 1Kgf force is applied, the area of a pressing head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 1.
As can be seen from Table 1, after soft polishing treatment is added before AF, the reciprocating abrasion resistance of the steel wool can reach more than 100 degrees of the water drop angle of 10000 times of AF surface. However, if no soft polishing treatment is added before AF, the reciprocating abrasion resistance of the steel wool can only reach 3000-5000 times.
TABLE 1
Example 2:
the preparation of the fingerprint-proof touch screen cover plate with the white glass, AR and AF structures mainly comprises the following steps: the surface soft polishing treatment of the AF surface bonding layer (namely AR) to be processed, pure water wet cleaning, plasma dry cleaning, AF spraying and standing at normal temperature for 12 hours.
The method comprises the following specific steps:
1) Mounting a 10mm thick high quality wool wheel to the sander head;
2) Rotating a grinding machine, applying a pressure of 1.2kgf, and grinding the surface of the AF layer to be processed of the white glass for one circle in a X, Y crossing way to ensure that each region is subjected to grinding treatment, wherein the surface topography Ra of a substrate after grinding reaches more than 2nm, and the surface topography of one sample is 2.161nm as shown in figure 3; the total color difference delta E of color variation before and after polishing is less than or equal to 0.25, so that color change NG and scratch NG caused by excessive polishing are avoided;
3) After polishing treatment, pure water wet cleaning is adopted, plasma dry cleaning is adopted, AF is sprayed on the polished surface, and finally, standing is carried out for 12 hours at normal temperature for drying, and the treatment is completed.
The same batch of products is prepared according to the method of example 2, 5 products are selected for AF life fast aging abrasion resistance test, 0000# steel wool is used for the test, the angle is vertical, 1Kgf force is applied, the area of a pressing head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 2.
As can be seen from Table 2, after soft polishing treatment is added before AF, the water drop angle of 10000 times is more than 100 degrees after the reciprocating abrasion resistance test.
TABLE 2
Example 3:
the preparation white glass +AG +AR +AF structural fingerprint-proof touch-sensitive screen cover plate, the main step is: the surface soft polishing treatment of the AF surface bonding layer (namely AR) to be processed, pure water wet cleaning, plasma dry cleaning, AF spraying and standing at normal temperature for 12 hours.
The method comprises the following specific steps:
1) Mounting a 10mm thick high quality wool wheel to the sander head;
2) Rotating a grinding machine, applying a pressure of 1.0kgf, and grinding the surface of the AF layer to be processed of the white glass for one circle in a X, Y crossing way to ensure that each area is subjected to grinding treatment, wherein the surface morphology Ra of the substrate after grinding reaches more than 2nm, and the surface morphology Rp of the substrate before and after grinding is less than or equal to 0.01 mu m; the total color difference delta E of the colors before and after polishing is 0.06, so that color change NG and scratch NG caused by excessive polishing are avoided;
3) After polishing treatment, pure water wet cleaning is adopted, plasma dry cleaning is adopted, AF is sprayed on the polished surface, and finally, standing is carried out for 12 hours at normal temperature for drying, and the treatment is completed.
The same batch of products is prepared according to the method of example 3, 5 products are selected for AF life fast aging abrasion resistance test, 0000# steel wool is used for the test, the angle is vertical, 1Kgf force is applied, the area of a pressing head is 2cm x 2cm, the friction speed is 40 cycles/min, and the friction stroke is 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 3.
As can be seen from Table 3, after the reciprocating abrasion resistance test, the drop angle of 10000 times is > 100 degrees.
TABLE 3 Table 3
Example 4:
the preparation white glass + AG + AF structural fingerprint-proof touch screen cover plate mainly comprises the following steps: the surface of the AF surface bonding layer (AG) to be processed is subjected to soft polishing treatment, pure water wet cleaning, plasma dry cleaning, AF spraying and standing at normal temperature for 12 hours.
The method comprises the following specific steps:
1) Mounting a 10mm thick high quality wool wheel to the sander head;
2) Rotating a grinding machine, applying a pressure of 1.0kgf, and grinding the surface of the AF layer to be processed of the white glass for one circle in a X, Y crossing way to ensure that each area is subjected to grinding treatment, wherein the surface morphology Ra of the substrate after grinding reaches more than 2nm, and the surface morphology Rp of the substrate before and after grinding changes to 0.0004 mu m; AG is an uneven product which is corroded by common glass to form pits, and excessive polishing can cause the original uneven to be flattened, so that the diffuse reflection effect of the pits cannot be realized;
3) After polishing treatment, pure water wet cleaning is adopted, plasma dry cleaning is adopted, AF is sprayed on the polished surface, and finally, standing is carried out for 12 hours at normal temperature for drying, and the treatment is completed.
The same batch of products was prepared according to the method of example 4, 5 products were selected for AF lifetime rapid aging abrasion test, 0000# steel wool was used for the test, the angle was vertical, a force of 1Kgf was applied, the ram area was 2cm x 2cm, the friction speed was 40 cycles/min, and the friction stroke was 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 4.
As can be seen from Table 4, after the reciprocating abrasion resistance test, the drop angle of 10000 times was > 100 degrees.
TABLE 4 Table 4
Comparative example 1:
the preparation method comprises the steps of plasma dry cleaning, spray coating AF and baking (150 ℃ for 40 min).
The surface morphology of the substrate before AF-spraying is shown in FIG. 4, and the Ra value thereof is 0.839nm.
The AF life quick aging abrasion resistance test is carried out on the product of the comparative example, wherein 0000# steel wool is used for 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 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 5. It can be seen that after 1500 reciprocations, the drop angle is approximately 100 °.
TABLE 5
Comparative example 2:
the preparation method comprises the steps of plasma dry cleaning, spray coating AF and baking (150 ℃ for 40 min). The Ra value of the substrate surface before spray coating AF was 0.807nm.
The AF life quick aging abrasion resistance test is carried out on the product of the comparative example, wherein 0000# steel wool is used for 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 50mm; the initial water contact angle before friction is more than or equal to 110 degrees, and the water contact angle after friction is more than or equal to 100 degrees. The specific results are shown in Table 6. It can be seen that after 1500 reciprocations, the drop angle is approximately 100 °.
TABLE 6
Comparative example 3:
as in example 2, the sander pressure was controlled to 2.0kgf only during sanding. The test results are shown in table 7 below.
TABLE 7
The change of the chromaticity delta E reaches 0.55 before and after soft polishing, and the polishing pressure is too large, so that the AR color is abnormal NG.
Comparative example 4:
as in example 2, the sander pressure was controlled to 0.5kgf only during sanding. The test results are shown in table 8 below.
TABLE 8
As can be seen from Table 8, the change in chromaticity DeltaE before and after soft polishing meets the requirements, but AF is not firmly combined with the substrate, and the abrasion resistance test can only meet the requirement of reciprocating 3000 times, and the water drop angle is more than 100 degrees.
Claims (8)
1. The preparation method of the fingerprint-proof touch screen cover plate is characterized by comprising the following specific steps of: polishing a bonding layer substrate below an AF product by adopting a polishing machine, wherein the polishing wheel is a wool wheel, the pressure applied in the polishing process is 1.0kgf-1.5kgf, so that the surface morphology Ra of the substrate reaches 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 manufacturing according to claim 1, characterized in that: in the polishing process, X-axis and Y-axis crossed polishing is carried out on the surface of the product to be processed for one circle, so that each area is ensured to be polished.
3. The method of manufacturing according to claim 1, characterized in that: the wool wheel with the diameter of 100mm and the thickness of 10mm has the service life of polishing products with the size of 50 square meters to 55 square meters, and is scrapped after the service life is finished.
4. The method of manufacturing according to claim 1, characterized in that: the cleaning is to carry out pure water wet cleaning first and then plasma dry cleaning.
5. The method of manufacturing according to claim 1, characterized in that: in the drying treatment, the product was allowed to stand at room temperature for 12 hours.
6. The method of any one of claims 1-5, wherein: the fingerprint-proof touch screen cover plate is of four structures including 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.
7. The method of manufacturing according to claim 6, wherein: 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.
8. The method of manufacturing according to claim 6, wherein: when the base material of the bonding layer is AG, the variation difference of Rp before and after polishing is controlled to be less than or equal to 0.01 mu m.
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| CN113277745B (en) * | 2021-06-04 | 2023-07-25 | 蓝思科技（长沙）有限公司 | Fingerprint-proof film coating process and glass |
| 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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| CN205139873U (en) * | 2015-11-30 | 2016-04-06 | 信利光电股份有限公司 | Touch display and apron thereof |
| CN105904909A (en) * | 2016-05-11 | 2016-08-31 | 关汉昌 | Preparation process of plane UV background wall |
| CN108262646A (en) * | 2017-12-30 | 2018-07-10 | 文山科泰丰电子有限公司 | A kind of production method of mobile phone A G glass cover-plates |
| CN109399957A (en) * | 2018-11-19 | 2019-03-01 | 江苏优视光学科技股份有限公司 | A kind of mobile phone screen protection processing technology of glass cover-plate |
| CN110304838A (en) * | 2019-07-17 | 2019-10-08 | 北海市龙浩光电科技有限公司 | A kind of large scale cambered surface dizzy, anti-fingerprint glass cover-plate preparation method against sunshine |
| CN110937822A (en) * | 2019-12-27 | 2020-03-31 | 宜昌南玻显示器件有限公司 | Wear-resistant AG + AR + AF glass and preparation method thereof |
| CN111470780A (en) * | 2020-04-10 | 2020-07-31 | 广州视源电子科技股份有限公司 | Preparation method of glass panel, display screen and display device |
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