Contrast ratio:
Unlike consumer displays, which are primarily used for direct viewing, industrial grade displays may not be viewed at optimal distances or under ideal lighting conditions, so higher contrast displays are the best choice. For 10.4-inch, 12.1-inch, or 15 inch displays used in most industrial fields, a contrast ratio of 450:1 is the most ideal.
Brightness:
Due to the fact that most flat panel displays are used in indoor environments with a brightness of approximately 250-300cd/m2 (nits), LCD screens with a diagonal size of 15 inches are the most commonly used. However, displays with this brightness level cannot meet the requirements in industrial environments because the ambient light is stronger and their brightness easily exceeds that of LCD backlight.
Moreover, touch screens are often used in industrial environments, which can also reduce the brightness of the display and make it appear darker. In typical applications such as medical, industrial, and public telephone booths, the required brightness should be at least 450 cd/m2. In the past, passive display technology, including LCD, had very poor response time compared to active light-emitting display technology.
In consumer displays, whether it is laptop displays or desktop displays, a response time of less than 30ms is sufficient. However, in industrial, medical, and gaming fields, users can feel motion in dynamic content environments, which requires LCDs to have faster response times. Among the newer technologies, AVS (Advanced Super View) or MVA (Multivariate VerteICal Alignment) have already achieved response times below 10ms. In televisions using ASV technology, this indicator can reach 6ms.