For the current rapid development of Chinese enterprises, the gradual realization of production automation is an inevitable trend, in the realization of the production automation process requires the use of liquid crystal display equipment. For how to choose the right monitor for their production requirements? How to choose an industrial-grade display? Need to understand the monitor. Industrial monitors are made of industrial LCD screen and industrial components, with anti-magnetic, shockproof, dustproof and anti-dust properties.
How to choose the right product can be from the installation mode, size, panel structure, signal type and LCD screen performance and so on several aspects to consider. Industrial LCD screen installation can be divided into the upper frame, flip type, embedded, open and module.
Uploaded industrial display used in industrial control cabinets, chassis and other equipment, chassis is generally U as a unit, 1U is equivalent to 44CM. commonly used 4U, 6U, 8U and so on.
Flip-flop industrial monitors are installed upside down from the back of the cabinet, and the front of the cabinet only displays the LCD display area.
Embedded industrial monitors are embedded directly from the front of the cabinet and are secured with hooks on the side. Unlike consumer monitors, which are primarily for direct viewing, for industrial grade monitors the user may not be viewing at an optimal distance or in ideal lighting conditions, so a higher contrast monitor is the best choice. For 10.4-inch, 12.1-inch, or 15-inch displays used in most industrial applications, a contrast ratio of 450:1 is ideal.
5.2, brightness
Since most flat-panel displays are used in indoor environments with a brightness of about 250 to 300 cd/m2 (nits), LCDs with a diagonal size of 15 inches are the most commonly used, however, displays of this brightness level cannot meet the requirements when used in industrial environments due to the fact that the ambient light will be much stronger, and its brightness will easily exceed the brightness of the LCD backlight. easily exceeds the brightness of the LCD backlight. Also, touchscreens are often used in industrial environments, which can reduce the brightness of the display and make it appear darker. In typical medical, industrial, and payphone booth applications, the required brightness should be at least 450 cd/m2. response time In the past, passive display technologies, including LCDs, have had very poor response times compared to active light emitting display technologies. In consumer displays, whether it is a laptop display, or desktop display, a response time of less than 30ms is sufficient, however, in the industrial, medical and gaming sectors, the user is able to feel the motion in the dynamic content environment, which requires that the LCD should have a faster response time. Newer technologies, such as AVS (Advanced Super View) technology or MVA (Multivariate VertICal Alignment) technology have made the response time below 10ms. In TVs using ASV technology, this can be as high as 6ms.
5.3, Viewing Angle
Commercial and consumer displays are typically designed for single-person use sitting directly in front of the monitor. In most industrial applications, this is very rare; for example, an internist or nurse can't stop in the middle of a consultation to go directly to the monitor; they just want to know the expected data. For large machines, operating directly in front of the display is simply impossible. And for ship or airplane navigation, it's also inconvenient for the driver to sit directly in front of the LCD, especially when there are multiple displays, all facing the viewer at different angles.
Displays should have a wide viewing angle, or be considered "sweeping enough to understand what's being displayed". Consumer displays generally don't meet this requirement because they utilize Twisted Nematic technology, so the viewing angle is limited. To better suit industrial applications, displays are required to have a wide viewing angle, and display technologies with viewing angles of up to 178° (such as ASV or MVA) have been developed.
5.4, color
In some industrial applications, special color information is more important than text or numbers, and the percentage number of NTSC color saturation that the measured color is used as a control is very important. In LCD products, color saturation is completely dependent on the effect of the backlight. ccf (cold cathode fluorescent screen) backlighting is a very popular technology and can achieve NTSC color saturation of 70% and 80%.
In some applications, this range is still not wide enough, and it is sometimes necessary to achieve a range close to 100% of NTSC color saturation. This full color saturation is usually achieved with LED backlighting in LCD products.
5.5, Backlight Lifetime Cold Cathode Fluorescent (CCF)
Lamps are the most commonly used backlighting source in LCDs. In industrial applications, the general time of life of a CCF backlight is at least 50,000 hours, or up to half the brightness compared to a new one. In many consumer applications, the backlight's brightness drops to half its initial brightness when only 10,000 hours are required. Since consumer applications do not require continuous operation of the display, 10,000 hours of CCF backlight life is sufficient, but this is not the case in most industrial and medical applications. Backlight life is very low compared to LCD life. Efforts are being made to triple the life of backlights, but in most industrial applications, a minimum of 50,000 hours is considered the life standard for CCF backlights.
5.6, Mechanical Properties
Like many technologies, there have been design changes in flat panel LCD products around the world. In industrial grade panels, such changes may occur every five years or more. Changes arise from the need to adapt to advances in technology or the emergence of better designs. Therefore, it is important to maintain a certain level of continuity in the design of industrial and medical equipment, which includes things like the same mounting holes, connector locations, and even some of the same display sizes. When displays change over a five-year period, the end product can have a 10-year lifecycle. This helps to consider some of the standard specifications, as well as a company's design strategy, before choosing a monitor. In contrast, consumer displays can change every six months, making them difficult to use in applications that require configuration control.
5.7 Vibration damping
In many end products such as handheld devices (handheld data terminals) or portable devices (vibration generators), vibration testing is often required to ensure that the equipment is capable of being used in commercial or emergency response vehicles. Vibration damping is very important in these applications due to the fact that it allows the designer to design the end product with some margin. Displays like the Strong2 series claim to have a 2G (acceleration) vibration damping, which allows the displays to be used in harsher industrial environments.
5.8. Lifespan
For consumers in the industrial market, whether it's a display terminal used in a phone booth or on an oil rig, it's rare to find displays that are guaranteed to work for 10 years. Manufacturers can offer displays with life cycles that meet or exceed 10 years. But most manufacturers of industrial-grade displays will produce them for at least three years, when in reality, the supply of products can last at least five years.
In stark contrast, consumer-grade displays used in desktop monitors, laptops, or other consumer devices change within a year, sometimes as frequently as every 6 months. These displays, which appeal to consumers primarily on price or appearance, are like shooting stars: they flash and disappear. But they have their place in the marketplace, and they're widely used in the consumer space, a segment that doesn't require much in the way of continuous monitor operation or form factor compatibility.
5.9, Configuration Control
Configuration control means that the monitor remains compatible in terms of form factor/suitability/functionality for a certain period of time. This basically allows display manufacturers the flexibility to change subcomponents to keep up with technology or market needs. It also allows users to transition to newer display products with minimal design changes. Product changes are inevitable, the question is how quickly and how much they affect users based on time and resources. When implementing configuration control, it is useful to minimize the impact by managing change.
Industrial-grade displays are designed to allow for change, and manufacturers strive to keep change to a minimum. When changes have to be made to the product, not only do they have a robust and recognized engineering/product change notification (ECN/PCN) program, but the information is sent to the customer in a timely manner to allow the customer to adapt to the change without very seriously impacting their commercial business. Typically, a PCN is issued by the manufacturer three months before the change is implemented. these changes are then filed and, in due course, the customer is able to obtain samples of the new product for testing before they receive it. In consumer displays, the need for configuration control is virtually non-existent and would not be accepted by the service market. Most consumer displays are essentially sold on a short-term basis and with no advance notice when changes occur.