Some typical touch panel sensing methods are introduced

　　Because the touch panel needs a wide range of functional characteristics, especially display visibility, position sensing accuracy, fast input response, durability and installation cost, the characteristics of different methods for sensing touch input vary greatly. Some typical touch panel sensing methods will be introduced below.By comparison, it can be seen that waterproof panel pc It has certain advantages and great cost performance. https://www.innodapc.com/

　　

　　Resistive film touch panel

　　

　　Before 2010, resistive film was the most widely used sensing method in the touch panel market. The touch panel based on this method is called pressure-sensitive or analog resistive film touch panel. In addition to independent liquid crystal displays, this technology is also used in various small and medium-sized devices, including smart phones, mobile phones, PDA’s, car navigation systems and Nintendo DS.

　　

　　Using this method, the position where a finger, stylus or other object touches the screen can be detected through the pressure change. This display has a relatively simple internal structure: a glass screen and a thin film screen with a very small gap between them, and each screen is attached with a transparent electrode film (electrode layer). Pressing the surface of the screen will make the film contact with the electrode of the glass layer, thus generating current. Contact points are identified by detecting voltage changes.

　　

　　Resistive film

　　

　　Advantages of this system include low manufacturing cost because of its simple structure. The power consumption of this system is also lower than other methods, and its structure also has good waterproof and dustproof performance because of the film covering on the surface. Because the input is made by applying pressure to the film, it can be done not only with bare fingers, but also with gloves or a stylus. These screens can also be used to enter handwritten text.

　　

　　Disadvantages include low light transmittance (reduced display quality) due to the film and two electrode layers; Relatively low durability and impact resistance; And that lar screen size will reduce the detection accuracy. (Accuracy can be maintained by other methods, for example, dividing the screen into multiple areas for detection. )