What is Resistive Touch Screen ?
If you press hard on the touch screen, you can feel the screen bend slightly. This is what makes resistive touch screen works that two electrically conductive layers bending to touch one another, as in this picture :
Resistive touch screen can also sense the touch of objects other than your finger, such as a stylus, gloved hand, rubber, etc.
What is Capacitive Touch Screen ?
The capacitive touch screen works by sensing the current of human body. In capacitive touchscreen display, glass panel is covered with a capacitive layer with a static charge. When person touches the screen with finger, some of the charge from capacitive layer is transferred to the person, so the charge on the capacitive layer decreases. The controller calculates location based on the ratio of these currents. As in this picture:
Compared to a resistive touch screen, capacitive touch screen results in smoother operation.
What is Infrared Touch Screen ?
Infrared touch screen is to use a dense matrix of infra-red x, y directions to detect and locate the user's touch. It works by embedding LED lights and sensors into the bezel of a monitor above the glass. These LED’s beam a signal across to the corresponding sensor on the other side forming an invisible grid. When the grid is broken by a finger, the sensors can detect the touch point. Therefore, it's easy to judge the position of the touch points on the screen. As in this picture:
If you have questions about which type of touchscreen, please contact us. We can help you make the right choice.