Since their inception in 1965, capacitive displays (capacitive touchscreens) have evolved from laboratory research to widespread global application. With the rise of multi-touch technology, the widespread adoption of smartphones, and the advancement of industrial automation, capacitive touchscreens have become a vital medium for modern human-computer interaction. Today, they are widely used in consumer electronics, industrial control, medical devices, in-vehicle displays, smart homes, and new energy sectors. The technology continues to innovate toward larger sizes, higher sensitivity, greater reliability, and smarter interaction, providing a more efficient and convenient touch experience for the digital age.