The introduction of Capacitive Touch Screen and Resistive Touch Screen

With the development of the touch screen technology of cell phones, there are a variety of touch screens full of our life, today we introduce something about the capacitive touch screen and resistive touch screen.
Capacitive touch screen
The principle of capacitive touch screen is relatively simple. Each electrode is the same potential, if there is no one touches the screen. But if someone touches the capacitive touch screen with the fingers, the body, the fingers and the conductor layer to form a coupling capacitor, electrodes of the four sides issue the current and the flow to contacts. Theoretically, the distance flow through the four electrodes and the finger to the four corners is proportional. The controller calculated the four current ratios and can get the position of the contacts.
The capacitive screen phone can operate only with your fingers, and we can’t operate with ordinary stylus, but you can use a dedicated capacitive screen stylus, which is not necessary for the capacitive screen; resistance screen phone can operate with your fingers or the stylus. More and more people concerned about the capacitive screen phone which can operate with a finger.
And now so many manufactures use capacitive touch screens that capacitive touch screen become the mainstream of the touch screen technology market.
Resistive touch screen
Resistive touch screen (Touch panel of resistance), also named resistive touch panel which is a LCD display device that can receive the input signal. When the graphic button is touched, according to the pre-programmed, haptic feedback system can drive a variety of connected devices, which can replace the mechanical button panel, and create vivid video effect by the LCD screen.
① They are a complete isolation of the working environment, not afraid of dust, water vapor and oil.
② They can touch by anything and can be used draw and write, which is their comparative advantage.
③ The accuracy of resistive touch screen depends only on the accuracy of the A / D converter, so it can easily reach 4096 * 4096. By contrast, in guarantee resolution accuracy, five-wire resistive is better than four-wire resistance, but the cost is to high, Therefore, the price is very expensive.
In this article, we share some details about the capacitive touch screen and resistive touch screen technology, if you are interested in this kind of articles, our blog will be your excellent choice.