The application of capacitive touch screen on smart phones brings the demand for AF fingerprint prevention function
When Apple Jobs released the first generation of Apple iPhone smart phones, he did not expect that because he was inexperienced in a small detail and neglected the difference between the capacitive touch screen cover plate material and the resistive screen operating surface material, most of the first generation of Apple mobile phones sold on the market did not have AF fingerprint prevention function. In the process of use, the mobile phone screen is inevitably covered with fingerprints, which not only directly affects the display effect of the mobile phone, but also makes the operation smoothness of the mobile phone far lower than that of the resistive touch screen mobile phone with the same price on the market at that time, which also leads to a delay of more than one year in the progress of the entire project, greatly affecting the market performance of Apple mobile phones.
(For smart phones without oil drainage layer fingerprint prevention process, the screen is covered with fingerprint, which seriously affects the display effect)
In fact, AF anti fingerprint function has been added to the protective glass and functional glass of electronic products, which has been applied in the market for a long time. Before Apple launched the smartphone, the industry, based on the principle of lotus leaf self-cleaning effect, would require a special layer of oil and water repellent layer to be added to the display products of some airborne equipment, just like the porthole glass, Improve the contact angle and sliding angle of the material surface to ensure that the display effect can maintain good readability in various environments. For example, Xinli, the leading company in the industry, has applied AF fingerprint prevention technology to its products for a long time.
Of course, there is another place that is more widely used, that is, all kinds of cameras, camera lenses or filter protectors with good quality. In order to increase the functions of dust prevention, oil prevention, fog prevention and waterproof beads, and avoid frequent wiping to lose the optical coating layer and affect the imaging effect, AF coating technology will be added in production and manufacturing. In fact, in order to prevent rust, corrosion, water, oil, and easy cleaning, similar AF coating processes are used in many industrial occasions, such as advanced industrial computer motherboards, medical stainless steel products, and various advanced jewelry.
(The hydrophobic self-cleaning effect of lotus leaves makes the surface of lotus leaves waterproof, achieving a sludge free effect)
In order to eliminate the adverse market effect caused by the lack of AF fingerprint proof effect of glass cover, Apple began to seek the AF fingerprint proof film processing technology and materials that can cooperate with Corning glass in the market. With the help of Corning, Apple found a supplier in the market to supply Corning building curtain wall glass, and provided it with AF fingerprint proof oil materials that used early spraying technology, The AF anti fingerprint spraying process is added to the production and processing process of its suppliers, which is controlled as a key indicator of the production of the capacitive touch screen glass cover plate.
In fact, because the glass cover plate material and AF fingerprint proof material and process used by each mobile phone brand are different, it is easy to have AF fingerprint proof coating with different quality effects, which ultimately affects the use effect of consumers. In addition to the fact that when Apple released the first generation iPhone smartphone, its phone quality was criticized by the market because of the abnormal screen fingerprint quality, many mobile phone brand manufacturers, including domestic well-known brands, have had the experience of tripping over the screen AF fingerprint quality in the market, which not only damaged the brand itself, but also hit consumers' confidence in these brands, It also greatly affected the sales performance of mobile phone manufacturers. With the maturity of consumers' cognition, the fingerprint prevention effect of mobile phone screen has become one of the key factors affecting consumers' purchase motivation.
Upgrade of smart phone display screen, Evolution of AF fingerprint prevention technology
The overall rise of the smartphone market has led other smartphone manufacturers, in order to break Apple's market pattern, to require suppliers to transplant the AF coating process originally applied to other optical and electronic products onto the capacitive touch screen cover plate of the smartphone, which not only enables the screen of the smartphone to prevent fingerprint, but also increases the wear resistance of the glass cover plate, And enhancing smoothness of gesture operation of capacitive screen. During this period, with its market position in the display and touch industry and its strong technical R&D strength, Sinley became the most important supplier of AF coating technology and products in the domestic electronic product market.
Under normal circumstances, it is necessary to test whether a mobile phone is equipped with AF coating. The industry often uses the steel wool friction test and the water drop angle test simulating the use process of Nissan to evaluate the AF coating, but these are professional tests, and ordinary users may not be able to complete this test. In the laboratory, the hydrophobic degree of the glass surface is usually analyzed from the perspective of water drops, and finally the antifouling force of the product surface is obtained.
(professional equipment to capture water droplets)
After Apple used the retina screen on its smart phone, the traditional spray type AF fingerprint prevention process failed to meet the wear resistance index, and Apple also required the anti fingerprint material supplier to continue to cooperate with Corning. For the material formula of Corning glass, it has developed the AF fingerprint prevention coating evaporation process that can maintain a long effect. This process is different from traditional optics The AF coating process on electronic products is very similar, but the cost is much lower, which soon became popular in the field of smart phones.
Since Apple began to use retina technology in a large area of electronic products, even higher resolution display products, in order to better reflect the advantages of high-resolution product display technology, AF fingerprint prevention technology has become increasingly important. If Apple started to use the AF fingerprint prevention process in order to better apply capacitive touch screens on smart phones, Apple has constantly upgraded its AF fingerprint prevention process. In addition to the continuous upgrading of Corning Glass products, the need to upgrade its display technology is the main reason.
Smart phones enter the era of full screen video interaction, and fingerprint prevention technology has become a behavioral pain point
With the continuous breakthrough of mobile communication technology in the industry, the bandwidth upgrade of mobile Internet has greatly expanded the application scenarios of smart phones. The interaction function of smart phones has also shifted from simple image text interaction to image video interaction. The technical requirements for the display screen of smart phones are also increasingly high, including the AF fingerprint prevention technology, which needs to be greatly upgraded.
The emergence of full screen display technology not only enables smart phones to get a resolution effect much higher than Apple retina technology in a small body with a suitable grip, but also can increase the display content by about 30% in the traditional smart phone display technology, thus becoming the curve application of the new generation of smart phones. From the current development of the industry, not only Apple's new generation iPhone needs to use this full screen display technology, but also the Android camp includes Sharp, Xiaomi, Samsung Besides LG and other mobile phone brands have already equipped full screen products on some high-end mobile phones, other mobile phone brands of Android camp, including domestic mobile phones, all said that full screen display technology will be the standard configuration of the next generation of smart phones, indicating the beginning of the era of full screen display.
The biggest feature of mobile phones with full screen display technology is the ultra narrow frame design. The entire front of the phone is almost covered by the display content. Users not only stay on the phone screen for a long time when operating the phone, but also must touch the display area of the display when holding the phone. Therefore, The quality of AF fingerprint prevention effect of full screen display products will directly determine the user experience and become an important factor influencing smartphone brand manufacturers to win the market.
After smart phones become the most frequently used products in daily life, if the quality of AF anti fingerprint effect is not so good and the service life of AF anti fingerprint coating meets the requirements of full screen display technology, it is easy to have the quality abnormality of AF anti fingerprint coating being worn off. For example, at present, mobile games are popular (like King Glory). Frequent use of mobile phones will accelerate the fall off of AF fingerprint proof coating on the surface of mobile phones, and the dry feel after the fall off will directly affect the user's game experience. Not only the display content is unclear, but also the operating speed will be greatly reduced, which is really maddening
In order to improve the image and video display effect of smart phone screens, as an important manufacturer in the display and touch industry and a major market supplier of comprehensive screen products, Sinley has also developed many advanced technologies to improve the display quality of comprehensive screen products, among which the most important one is the fingerprint prevention technology upgrade.
On the basis of rich technology precipitation and years of experience in the industry, Xinli has innovatively developed the industry leading AF+coating (nano enhanced anti fingerprint coating) process. Through a large number of experiments and tests, Sinley AF+coating adopts multi-layer coating composite technology and special coating process treatment to make AF materials have more superior adhesion, so the anti fingerprint coating has strong stability, and the processed products also have more superior adhesion than the traditional AF process, thus greatly extending the service life of the AF layer.
The most remarkable feature of Sinley AF+coating is its strong friction resistance, and its service life is more than 3 times that of ordinary AF process coating. The wear resistance times are the most important index to determine the AF coating. In the current existing technology, steel wool is used as the test tool, the test condition is 1kg load, and the area is 2 × 2cm. The mobile phone display screen uses the friction test of ordinary anti fingerprint oil. The test results are generally about 10000 to 20000 times, and the experimental products will begin to fall off the AF coating. Under the same experimental conditions, Sinley AF+coating process may pass more than 60000 test experiments. After the test, its AF coating does not fall off, and its oil repellent, hydrophobic, waterproof and oil resistant performance is still outstanding.
(Xinli AF+coating 100000 friction experiments, and the peak value of AF+can reach 100000~120000 times)
The double glass body design trend led by Apple in the smart phone industry not only makes the new generation of smart phones begin to popularize the full screen display technology, but also the upgrading of AF fingerprint prevention technology of the whole glass body in the whole industry will bring huge market space to the display and touch industry. The breakthrough of Sinley's AF+coating process in fingerprint prevention technology will also provide a powerful technical assistance for Sinley to seize the market opportunity of full screen and dual glass fuselage.
At present, Sinley has set up a benchmark index of 60000 times of AF coating wear resistance for the industry, which can at least meet the service life of the AF coating of the mobile phone screen more than three times that of the industry under the condition of high frequency use, and its fingerprint prevention quality can still maintain a consistent excellent effect. Sinley's AF+coating technology has also become a blessing for smart phone users, It is believed that in the future market, more and more consumers will regard whether there is an AF+coating layer of Xinli or not as an important option to determine whether a full screen mobile phone is excellent.
