Which relevant parameters should be paid attention to when purchasing industrial LCD?

1. Resolution

The size and resolution of industrial displays play a role in overall readability. Generally speaking, 6.5, 8.4, 10.4, 12.1, and 15-inch LCDs in the LCD mode are mostly used in industrial applications. These dimensions provide enough space for viewing counts, signal waveforms, or other graphic data without occupying too much space on the device. The requirement for resolution is mainly determined by display information or display data. In the past, VGA, SVGA and XGA resolutions were very popular.

However, more and more manufacturers are beginning to pay attention to the profits of large aspect ratio displays, such as WVGA and WXGA. The large aspect mode allows users to view longer information waveforms and more data on one display. These displays can also be designed to incorporate touch key functions on the display surface, allowing users to view data on a large aspect display or switch between standard aspect ratio displays that incorporate touch screen functions. This new advanced functionality helps simplify the user interface.

2. Availability

When choosing a display for manufacturing in a production environment, other features that are more invisible need to be considered. For example, it is important to ensure that downtime is minimized. In order to achieve a large utilization rate, it is very important to choose a higher-quality display as much as possible and have available spare parts for on-site repair rather than sending it to the outside for repair.

Industrial application displays also require a long product life cycle. When the manufacturer no longer manufactures a certain model, the new display should be backward compatible to conform to the existing airtight container without requiring the entire system to be redesigned.

Three, space size

Space issues are a significant factor that designers in the industrial field need to consider. Industrial LCD monitors are currently produced by manufacturers ranging from 6.4 inches to 70 inches.

Fourth, visibility

Good visibility is a bright spot of industrial LCD displays. Displays in industrial applications need to support clear and precise visual effects from multiple angles in a strong light environment. Most industrial environments are an environment surrounded by strong light, which poses a challenge to the visibility of the display. The brighter the environment, the more difficult the LCD transmission, because people's standard readable brightness is 250-300cd/㎡. Some LCD manufacturers try to expand the range to more than 450cd/㎡. But these displays require more energy and this is not a good solution. Moreover, these brightness levels are not enough to function in a very bright environment. At present, many domestic manufacturers have achieved high-brightness LCDs above 1800cd/㎡. Among them, there are many types of military LCDs above 2000cd/㎡.

Five, perspective

In a typical industrial environment, operators prefer to look at the display at an oblique angle rather than a positive angle. Therefore, it is very important that a picture is viewed from different angles without or rarely showing distortion or color changes in the picture. Especially the display settings on consumer applications can't do the job well, because the picture may be missing or can't be seen at an oblique angle. Some techniques are used to improve the viewing effect of LCDs at oblique angles. The viewing angles achieved by some film-based technologies are usually 80° up, 60° down, 80° left and 80° right. These angles are sufficient for many applications, but some applications may require a larger viewing angle.

In-plane switching technology (IPS), multi-quadrant vertical alignment technology (MVA) and ultra-precision thin film transistor technology (SFT) provide various LCD manufacturers with popular choices. These patented technologies can achieve a larger viewing angle than in the field of film technology. For example, the SFT technology of NECLCD technology achieves 85 both up and down, left and right. The viewing angle of the machine allows the machine operator to view the LCD display from various angles without major image distortion or color changes.

6. Sustainability/Dependability

The ability to withstand temperature changes and vibrations is an important consideration when choosing displays for contemporary industrial applications. The display must be flexible enough to prevent impacts or collisions by mechanical operators or peripheral equipment, and must also be able to cope with various operating temperatures. Compared with CRT, LCD is more resistant to temperature changes, impact and vibration.

Storage and operating temperature are also the main variables for selecting industrial equipment displays. Generally speaking, the display is embedded in a closed container and is an integral part of large equipment. In these cases, the temperature is affected by the heat generated by the closed container and surrounding equipment.

Therefore, keeping in mind the actual storage and operating temperature requirements is very important when choosing a monitor. Although some measures have been taken to dissipate the heat generated, such as using fans in airtight containers, choosing a monitor that is suitable for these environments is an effective way to ensure compliance with storage and operating temperature requirements. The improvement of liquid crystal materials also makes it possible to expand the preferred temperature range of LCD. At present, many LCDs have achieved a temperature range of -10 to 70°C.