How can nickel plating film improve the durability and stability of touch screens?

Brief introduction

As an important component of modern electronic devices, touch screens are widely used in smartphones, tablets, and various touch sensitive electronic devices. The durability and stability of touch screens not only affect user experience, but also directly determine the lifespan of the device. The nickel plating film technology has attracted much attention due to its excellent corrosion resistance, heat resistance, and good conductivity, especially the PI nickel plating film made from it, which has stronger wear resistance and greatly improves the wear resistance and corrosion resistance of touch screens. Compared to traditional gold plating techniques,PI nickel plating filmMore advantageous in terms of cost-effectiveness and service life. Advanced Institute (Shenzhen) Technology Co., Ltd. has made significant progress in this regard.

2、 The principle and data of improving the durability of touch screens with nickel plating film

（1） Wear resistance performance

1. experimental design
   • Advanced Institute (Shenzhen) Technology Co., LtdWe conducted an experiment on the wear resistance of touch screens. They prepared two sets of touch screen samples, one set was a regular touch screen without nickel plating film, and the other set was a touch screen coated with PI nickel plating film.
   • In the wear resistance experiment, a standard friction testing machine was used, with a friction head pressure of 500g, a friction speed of 100 times/minute, and a friction medium of diamond particles with a diameter of 0.5mm.
2. Comparison of experimental data
   • After 1000 frictions, the surface scratches of the ordinary touch screen without nickel plating film increased significantly, and the touch sensitivity of the touch screen decreased by about 30%. Through optical microscopy observation, it was found that the surface roughness increased by about 0.5 μ m.
   • After the same 1000 rubs, the touch sensitivity of the touch screen coated with PI nickel plating film only decreased by about 5%, and the surface roughness only increased by about 0.05 μ m. This indicates that the PI nickel plating film greatly improves the wear resistance of the touch screen and reduces the damage of external friction to the touch screen.

（2） Corrosion resistance performance

1. experimental design
   • Corrosion experiments were conducted to address the corrosion issues that touch screens may face in complex environments. The experiment used two sets of touch screen samples, each placed in a humid environment containing 5% sodium chloride solution.
   • The ambient temperature is set to 30 ° C, the humidity is 80%, and the storage time is 72 hours.
2. Comparison of experimental data
   • After 72 hours of corrosion testing, the touch screen without nickel plating film showed obvious corrosion spots on the surface, and about 10% of the touch area experienced touch failure.
   • The touch screen coated with PI nickel plating film has only a very small amount of slight corrosion marks under the same conditions, and the touch function is normal, with little decrease in touch sensitivity. This indicates that the PI nickel plating film can effectively block the corrosion of external corrosive substances on the touch screen, improving the corrosion resistance of the touch screen.

3、 The principle and data of improving the stability of touch screens with nickel plating film

（1） Electrical stability

1. experimental design
   • In the electrical stability experiment, ordinary touch screens and plated ones were tested separatelyPI nickel plating filmMeasure the resistance changes of the touch screen under different temperature and humidity conditions. The temperature range is set from -20 ° C to 60 ° C, and the humidity range is 30% -90%.
   • Resistance is measured using the four probe method, which ensures accuracy and reliability.
2. Comparison of experimental data
   • Ordinary touch screens experience significant resistance fluctuations during temperature and humidity changes. For example, when the temperature rises from 20 ° C to 60 ° C, the resistance increases by about 20%; When the humidity increased from 30% to 90%, the resistance decreased by about 15%. The significant fluctuation of this resistor can lead to unstable touch signals on the touch screen.
   • The touch screen coated with PI nickel plating film has very small resistance fluctuations within the same temperature and humidity range. When the temperature rises from 20 ° C to 60 ° C, the resistance only increases by about 2%; When the humidity increased from 30% to 90%, the resistance only decreased by about 3%. This indicates that the PI nickel plating film helps to maintain the stability of the electrical performance of the touch screen, ensuring stable transmission of touch signals.

（2） Adhesion stability

1. experimental design
   • In order to test the adhesion stability of the touch screen film layer, a tape peeling experiment was conducted. Stick the ordinary touch screen and the touch screen sample coated with PI nickel plating film separately with standard tape, and then quickly peel off at a 90 ° angle, repeating 10 times.
   • Standard tape refers to acid free tape with stable chemical properties and moderate viscosity.
2. Comparison of experimental data
   • After 10 tape peeling experiments, the film layer of a regular touch screen began to peel off locally, and the adhesion decreased by about 30%.
   • The touch screen coated with PI nickel plating film showed no peeling of the film layer under the same experimental conditions, and the adhesion only decreased by about 5%. This shows that the PI nickel plating film has good adhesion stability with the touch screen substrate, which can ensure that the film layer of the touch screen will not easily fall off during long-term use, thereby improving the overall stability of the touch screen.

4、 Conclusion

In summary, nickel plating films, especially those researched by Advanced Institute (Shenzhen) Technology Co., LtdPI nickel plating filmBy improving wear resistance, corrosion resistance, electrical stability, and adhesion stability, the durability and stability of the touch screen have been effectively enhanced. The research team of Advanced Institute (Shenzhen) Technology Co., Ltd. has conducted extensive research and optimized and improved the PI nickel plating film technology, greatly enhancing its performance in terms of wear resistance, corrosion resistance, and stable touch screen touch signals. These data comparisons fully demonstrate the enormous potential of nickel plating film in touch screen applications, providing strong support for the further development of touch screen technology in the future. With the continuous deepening of research, nickel plating film is expected to be widely used in more types of touch screen devices, further improving the user experience and device reliability.

The above data is for reference only, and specific performance may vary due to production processes and product specifications.