Resistive touch liquid crystal displays have a long - standing presence in the world of display technology, especially in applications where accuracy and durability are crucial. They combine the functionality of a resistive touch panel with the image - forming capabilities of a liquid crystal display.
The resistive touch panel consists of two flexible layers separated by a thin gap. Each layer is coated with a resistive material, usually ITO. When pressure is applied to the screen, the two layers come into contact at the point of pressure. This contact changes the electrical resistance between the two layers, and the touch location is determined by measuring the change in resistance. Unlike capacitive touch, resistive touch can be activated by any object that applies sufficient pressure, including a gloved finger or a non - conductive stylus.
The liquid crystal display part of resistive touch liquid crystal displays operates in a similar way to other LCDs. Liquid crystals are used to control the passage of light through polarizing filters to create images. While resistive touch liquid crystal displays may not offer the same high - resolution and color accuracy as some high - end capacitive touch LCD displays, they still provide clear and legible visuals for many applications.
Resistive touch liquid crystal displays are commonly used in industrial control panels, automotive dashboards, and some point - of - sale (POS) systems. In industrial settings, they are preferred because they can withstand harsh environments, including dust, moisture, and mechanical stress. Workers can operate the display with gloves on, which is essential in many industrial processes. In automotive dashboards, resistive touch liquid crystal displays are used for controlling various vehicle functions, such as audio systems, climate control, and navigation. Their durability ensures reliable operation even under the vibrations and temperature fluctuations experienced in a vehicle. In POS systems, the resistive touch allows for accurate input of product codes and transaction details, and the LCD display provides clear information about the items being purchased and the total amount due.
