1. Working principles of capacitive touch screens and resistive screens:
What is the working principle of capacitive touch screens? When a user touches a capacitive screen, a coupling capacitor is formed between the human body current, the finger and the conductor layer. The current emitted by the four points is directed to the contact point, thus realizing a capacitive contact point. When the finger touches the screen, the controller behind the screen will automatically calculate the current ratio and strength. When testing FPG or functional chips, the current data will also be displayed, and the position of the touch point can be accurately calculated. The sensing of capacitive touch screens is relatively sensitive. It is through the static induction of the human body. The resistive screen is through the pressure touch screen upper and lower panels to sense, thereby triggering the touch effect of the upper and lower lines.
The film material used for the touch panel of the resistive screen will be severely scratched after a long time of use. If the screen needs to be replaced, the tempered glass cover used for the capacitive touch screen is not easy to scratch, but it is easy to break when it falls. The disadvantage of the capacitive touch screen may be that its electrostatic interference is worse, and it is easy to cause electrostatic interference to the touch screen due to environmental factors, which is unstable to use. In the environment where general products are used, the electrostatic interference is relatively strong or a wide temperature effect is required. We will solve the corresponding problems and perform anti-static treatment.
2. Capacitive touch screen and resistive screen market trends:
Capacitive touch screens will gradually replace resistive screens and become the mainstream of the market.
Compared with resistive screens, capacitive touch screens have technical advantages in response speed and accuracy. Projected capacitive touch screens effectively overcome the shortcomings of resistive screens such as short service life, low light transmittance, and high energy consumption, and their performance has been significantly improved. Therefore, the replacement of resistive screens with capacitive touch screens has become a trend. Especially in the field of small-size touch screens, capacitive screens and resistive screens will coexist, but capacitive screens will gradually dominate, especially in mid- and low-end electronic products, where resistive screens are gradually being replaced by capacitive screens. In addition, with the development of technologies such as the Internet of Things and artificial intelligence, touch screens, as an important interface for human-computer interaction, will usher in more development opportunities, especially in Southeast Asia, Africa and other places, where the increasing penetration rate of smart phones has provided a broad market space for the touch screen industry. These trends indicate that capacitive touch screens are expected to become the mainstream choice of the market in the future.
3. Application scenarios of capacitive touch screens and resistive screens:
The application scenarios of capacitive touch screens mainly include high-end electronic products and devices that require high-precision input. Because it does not require pressing, but only needs to touch to input commands, capacitive touch screens are very suitable for occasions that require fast response and high sensitivity, such as smartphones, tablets, automation equipment, medical equipment, public information query systems, etc. The advantages of capacitive touch screens include high transmittance and clarity, good environmental adaptability, and the ability to support multi-touch, which make them the mainstream choice in modern electronic devices.
Resistive screens are more suitable for cost-sensitive or touch screen performance-not particularly high requirements, such as industrial control, education, and commercial displays, due to their mature technology, relatively low cost, and surface resistance to dust, water, and dirt. The disadvantages of resistive screens include relatively short life, frequent position correction, and the need to avoid using sharp objects to directly touch the screen during use to protect the hard coating on its surface.
In general, capacitive touch screens are more suitable for high-end consumer electronic products due to their high sensitivity and good user experience; while resistive screens still have a certain market demand in specific industries and applications due to their cost-effectiveness and durability.
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