resistivenäytöissä

Resistive touchscreens, often referred to as resistivenäytöissä in Finnish, are a type of touchscreen technology that operates by responding to physical pressure. Unlike capacitive screens that detect the electrical properties of a finger, resistive screens rely on the physical contact between two electrically conductive layers. These layers are separated by a small gap. When the screen surface is pressed, the two conductive layers come into contact at that specific point. This contact creates an electrical signal that the device's controller interprets as a touch input, determining the coordinates of the touch.

The construction typically involves a flexible top layer, often made of plastic or glass coated with a transparent conductive material like Indium Tin Oxide (ITO), and a rigid bottom layer, usually glass, also coated with ITO. A grid of fine, transparent insulating dots or lines keeps the layers separated until pressure is applied. Resistive screens can be activated by any object, including a fingertip, stylus, or even a gloved hand, making them versatile in various environments where touch accuracy is more important than the ability to use bare fingers.

While they offer good resistance to dust and liquids and are generally less expensive to manufacture than capacitive screens, resistive screens have some drawbacks. They generally offer lower image clarity due to the multiple layers and require more pressure to activate, which can lead to a less responsive feel. Furthermore, they do not support multi-touch gestures as effectively as capacitive screens. Despite these limitations, resistive touchscreens are still found in applications where durability, cost-effectiveness, and the ability to use various input devices are prioritized, such as in industrial equipment, point-of-sale systems, and older mobile devices.