At present, a large number of LCD products, the manufacturing process is not the same, and not all can be applied in each field. In order to provide an optimal match between LCD and applications, it is important to understand the specific target market and its specific design requirements. For example, many displays are designed and manufactured for consumer applications, including those for laptops, desktops, and low-end desktops.
However, due to very competitive pricing and real-time market factors, common modules do not meet the requirements of durability, reliability, and advanced features required by those industrial environments. The product life cycle is usually especially short in consumer applications. So displays designed and manufactured for these applications generally last only a year or two.In the past few years, LCDs have replaced CRTs in industrial display applications, including some areas such as industrial automation systems and test and measurement equipment. Compared with CRT displays, LCDs provide more convenience for the industrial market, especially in the selection of key standards such as space, readability and sustainability.
Space is a significant factor that industrial designers need to consider. LCDs have an advantage in this respect because they offer more flexibility and are thinner than CRTs, factors that make it easier for them to find suitable locations on industrial equipment. On the other hand, some of CRT’s ancillary products need to take up more space and be located in specific parts of the plant. In addition, the LCD device is designed to be more portable, allowing flexibility to support tasks previously performed by expensive equipment under the same conditions.
Readability of the monitor is another highlight of the LCD. Importantly, displays for industrial applications need to support clear and accurate visual effects from multiple angles in a high-light environment. Most industrial environments are surrounded by bright light, which challenges readability. The brighter the environment, the more difficult it is to transmit LCDs, because people’s standard readable brightness ranges from 250-300cd/m2. Some LCD makers are trying to expand beyond 450cd/m2. But these displays require more energy and are not the best solution. Moreover, these levels are not high enough to work in very bright environments.
One of the solutions to improve readability of the display in a high-brightness environment is to improve contrast without increasing power consumption.In non-industrial environments, the typical contrast range is 200:1 to 300:1, which is not sufficient for the machine operator to view the display from a distance. A 450:1 contrast ratio is more suitable for industrial environments. Higher contrast requires people to get closer to distinguish between light and dark images.
Transparency technology provides additional benefits for highlighting industrial environments. A reflective display has both transmission and reflection characteristics. Just as it can be viewed in a dark environment with a backlight, the performance of reflection is also mentioned, which makes it extremely readable in a highlighted environment.
Multi-view readability is another choice. In a typical industrial environment, the operator prefers to look at the monitor at an oblique Angle rather than a positive angle. Therefore, it is important that an image is viewed from different angles (top, bottom, left, right, front and back) with little or no distortion or color change. In particular, the display Settings on consumer apps don’t work well because the images may be missing or can’t be seen diagonally.
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