touch screen display wholesale.The position of the touch point is measured by the method of the X-axis and Y-axis voltage values ??of the ITO contact point. A five-wire resistive touch screen requires four leads on the inner layer of ITO, and only one conductor on the outer layer. There are five lead wires on the touch screen. Features: high resolution, high-speed transmission response. High surface hardness, reducing scratches, scratches and chemical treatment. It can still be used after 30 million contacts at the same point. Conductive glass is the medium of the substrate. One-time calibration, high stability and never drift. Five-wire resistive touch screen has a high price and environmental requirements of high shortcomings 1.3 limitations resistive screen whether it is a four-wire resistive touch screen or five-wire resistive touch screen , which is a kind of the outside world completely isolated working environment, not afraid of dust and moisture It can be touched with any object and can be used for writing and drawing. It is more suitable for limited people in the field of industrial control and offices. The common disadvantage of resistive touch screens is that because the outer layer of the composite film is made of plastic materials, people who do n??t know too hard or use a sharp touch may scratch the entire touch screen and cause scrap. However, within the limits, the scratch will only hurt the outer conductive layer. The scratch of the outer conductive layer is irrelevant to the five-wire resistive touch screen, and it is fatal to the four-wire resistive touch screen. 2. Capacitive touch screen 2.1 Capacitive technology Touch screen uses the human body's current sensing to work. The capacitive touch screen is a four-layer composite glass screen. The inner surface and the interlayer of the glass screen are each coated with a layer of ITO. The outermost layer is a thin layer of silica glass protective layer. The interlayer ITO coating is used as the working surface. Lead out four electrodes, and the inner layer of ITO is a shielding layer to ensure a good working environment. When a finger touches the metal layer, due to the electric field of the human body, the user and the touch screen surface form a coupling capacitor. For high-frequency current, the capacitor is a direct conductor, so the finger draws a small current from the contact point. This current is flowing from the electrodes on the four corners of the touch screen, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the position of the touch point through accurate calculation of the four current ratios. . 2.2 Defects of capacitive touch screen

touch screen display wholesale.The position of the touch point is measured by the method of the X-axis and Y-axis voltage values ??of the ITO contact point. A five-wire resistive touch screen requires four leads on the inner layer of ITO, and only one conductor on the outer layer. There are five lead wires on the touch screen. Features: high resolution, high-speed transmission response. High surface hardness, reducing scratches, scratches and chemical treatment. It can still be used after 30 million contacts at the same point. Conductive glass is the medium of the substrate. One-time calibration, high stability and never drift. Five-wire resistive touch screen has a high price and environmental requirements of high shortcomings 1.3 limitations resistive screen whether it is a four-wire resistive touch screen or five-wire resistive touch screen , which is a kind of the outside world completely isolated working environment, not afraid of dust and moisture It can be touched with any object and can be used for writing and drawing. It is more suitable for limited people in the field of industrial control and offices. The common disadvantage of resistive touch screens is that because the outer layer of the composite film is made of plastic materials, people who do n??t know too hard or use a sharp touch may scratch the entire touch screen and cause scrap. However, within the limits, the scratch will only hurt the outer conductive layer. The scratch of the outer conductive layer is irrelevant to the five-wire resistive touch screen, and it is fatal to the four-wire resistive touch screen. 2. Capacitive touch screen 2.1 Capacitive technology Touch screen uses the human body's current sensing to work. The capacitive touch screen is a four-layer composite glass screen. The inner surface and the interlayer of the glass screen are each coated with a layer of ITO. The outermost layer is a thin layer of silica glass protective layer. The interlayer ITO coating is used as the working surface. Lead out four electrodes, and the inner layer of ITO is a shielding layer to ensure a good working environment. When a finger touches the metal layer, due to the electric field of the human body, the user and the touch screen surface form a coupling capacitor. For high-frequency current, the capacitor is a direct conductor, so the finger draws a small current from the contact point. This current is flowing from the electrodes on the four corners of the touch screen, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the position of the touch point through accurate calculation of the four current ratios. . 2.2 Defects of capacitive touch screen IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.