As a human-computer interaction technology, touch sensors are not only widely used in consumer electronics products, but also play an important role in industrial control, medical equipment, and smart homes. Touch sensors have high sensitivity and fast response time; Touch sensors can support multi touch, allowing users to perform multiple operations simultaneously, thereby improving the efficiency and flexibility of operations; The design of touch sensors is simple and beautiful, which can effectively save space; The durability of touch sensors is also strong because they have fewer components, reducing the possibility of wear and damage. With the continuous advancement of technology, the cost of touch sensors is gradually decreasing, making them easier to popularize. This enables touch technology to be adopted in a wider range of devices, thereby enhancing user experience and driving the development of the intelligent era. Its unique characteristics and significant benefits make it an important component of modern technology。