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Difference Between Resistive Touch Screen and Capacitive Touch Panel
Time：
2023-10-30 14:43
First, the difference between resistive and capacitive touch panels:
1. Capacitive touch screen
Capacitive touchscreens are expected to contain X and Y electrodes with an insulating layer between them. Transparent electrodes are usually patterned with ITO and metal bridges in a diamond shape.
The human body is conductive because it contains water. Projected capacitive technology utilizes the electrical conductivity of the human body. When a bare finger touches a sensor with X and Y electrode patterns, capacitive coupling occurs between the human finger and the electrodes, which changes the electrostatic capacitance between the X and Y electrodes. The touchscreen controller detects electrostatic field changes and positions.
2. Resistive touch screen
A resistive touch screen consists of a glass substrate as the bottom layer and a thin film substrate (usually transparent polycarbonate or PET) as the top layer, each layer is coated with a transparent conductive layer (ITO: Indium Tin Oxide), separated by spacers to make a small air gap. The two layers of conductive material (ITO) face each other. When a user touches a portion of the screen with a finger or a stylus, the thin layer of conductive ITO comes into contact. It changes the resistance. The RTP controller detects changes and calculates the touch position. The point of contact is detected by this change in voltage.
2. Which is better, resistive or capacitive touch screen ?
1. What is the purpose of resistive touch screen?
Resistive touchscreens still dominate cost-sensitive applications. They are also widely used in point-of-sale terminals, industrial, automotive and medical applications.
2. What is the use of capacitive touch screen?
Projected Capacitive Touch Panel (PCAP) was actually invented 10 years before the first resistive touchscreen. But it didn't catch on until 2007 when Apple first used it on the iPhone. Since then, PCAP has dominated the touch market, such as mobile phones, IT, automotive, home appliances, industrial, IoT, aviation, ATM, kiosks, Android cell phones, etc.
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