With the continuous progress of science and technology, touch screen in electronic devices has become a common input method. Among them, resistive touch screens have received widespread attention for their good accuracy and stability. However, understanding how resistive touchscreens work and how to determine the coordinates of touch points may still be a mystery to many users. In this article, we will delve into the working principle of resistive touchscreens.
First, let us understand the basic principle of resistive touch screen. Resistive touch screen consists of two layers of conductive film, sandwiched between a layer of insulating material. When the user touches the screen, the upper and lower layers of conductive film contact, conductive film on the formation of a resistor network. The process of determining the coordinates of the touch point is divided into two main steps.
The first step is to measure the resistance value of the resistor network. The resistance value of the resistor network is proportional to the distance from the touch point to the sides of the resistor network. By measuring the resistance value, we can initially determine the row or column where the touch point is located.
The second step is to determine the specific location of the touch point in the row or column. On a resistive touch screen, voltage signals are sent from the four corners to the four corners of the touch pad. When the user touches the screen, the touch points cause current to flow, creating a resistive voltage divider circuit. By measuring the voltage at the four corners, the exact position of the touch point in a row or column can be calculated.
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To summarize, resistive touch screen is - a common and effective input method, and SONYTEK LCD screen as one of the reliable quality options on the market, attracting more and more users. By gaining an in-depth understanding of how resistive touchscreens work and learning about the quality of SONYTEK LCDs, users can better understand this field and make informed purchasing decisions.
