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4 Common Issues with High-Brightness Displays

Views: 312     Author: Reshine Display     Publish Time: 2023-10-10      Origin: Site


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4 Common Issues with High-Brightness Displays

One thing is certain as the advertising industry makes its transition from print to digital signage: the displays appear to be getting brighter and brighter. Why? Is it because advertising is obsessed with breaking past brightness records? Are we all convinced that "bigger and brighter is always better?" Or may we ascribe this tendency to lower pricing as technology production becomes more efficient? These considerations are, without a doubt, not insignificant.

While such technology is growing less expensive, larger, brighter, and better, it may open the door for advertising to achieve what they've always wanted: the most brightness for their dollars.

Why? Because the brighter the display, the more visible it is. The better it competes with the brightness of the sun (and the plethora of other competing light sources). More brightness equals greater visibility in the digital world. More visibility equals more revenue possibilities in the advertising business.

Nobody wants to look at a dingy sign, let alone pay to advertise on it. The best method to minimize disappointment among all parties concerned is to keep the lights on. But what are the consequences of such frequent and intense high-brightness displays? To begin, let us discuss blue light. Related product: 3.5 Inch High Brightness Lcd Display.

1. Excessive Blue Light

Blue light is frequently mentioned as an issue, but what precisely is blue light? Unlike sunlight, which comprises a mix of red, orange, yellow, green, and blue light (along with numerous variants), digital displays typically emit blue light. Over time, blue light can induce eye strain and other eye-related disorders.

There is a relationship between the wavelength of a light ray and the amount of energy it contains. The correlation, however, is rather inverse. The lower the energy, the longer the wavelength, and vice versa. Longer wavelengths and lower energy are associated with rays on the red side of the visible light spectrum. Those on the blue end of the spectrum have shorter wavelengths and higher energy levels. The blue light rays with the shortest wavelengths (and the most energy), also known as "violet light," are what we identify with the hazardous radiation we frequently hear about, known as "ultraviolet radiation."

The majority of UV radiation (UV-B and UV-C) is absorbed by our atmosphere. Human eyes' corneas and lenses are effective at shielding the retina from the remaining UV-A radiation that passes through the environment. Blue light, on the other hand, is visible light that varies from 380 nm to 500 nm (nm = nanometer, which is a unit of measurement that is 10-9 meters) and can be harmful over time.

Blue light (including high-energy light) accounts for around one-third of all light that enters our eyes. Though the sun exposes us to the most blue light, several man-made blue light sources, such as digital screens, also expose us. While the amount of blue light released by these screens is only a fraction of what we get from the sun, we do spend a lot of time looking at them. Frequent exposure has been linked to retinal damage and the development of AMD (adult macular degeneration). So, ultimately, a display with more brightness is a display with more of this problem.

Consider the following comparison: A typical TV has a brightness of about 200 nits, however, many outdoor displays have a brightness of 5000 to 8000 nits. The amount of high-energy blue light emitted by the display grows as its brightness increases. When you combine these high levels of blue light with the sunshine we are already exposed to daily, it's easy to see how we could be approaching dangerous levels of exposure.

Excessive blue light hurts wildlife in addition to causing harm to our own eyes. In summary, many of the bright displays we see, whether they be outdoor video walls or LED/LCD billboards, may be seen from many miles away. All of this light pollution can have an impact on many aspects of nature, including animal breeding, foraging, and orientation habits.

2. Excessive power use (and associated operating costs)

The true ownership cost of high-brightness displays is complicated. It is unquestionably more than a one-time cost. One of the more obvious disadvantages of a brighter display is that it consumes more power and costs more to operate. Brightness plays a major role in display operating costs, and some high-brightness screens consume more energy by default – even when not at full brightness. It stands to reason that they will consume much more electricity when set to full brightness. This is one of several things to consider when calculating the total cost of ownership.

3. Excessive heat load (and associated operating costs)

High power usage raises a few additional issues. Higher-brightness screens, for example, will have a higher-than-average heat load. What does this imply? For starters, it indicates we haven't finished discussing expenses! A unit with a high heat load will necessitate additional cooling.

To summarize, here are the facts:

Displays with high brightness generate more heat than other types of displays.

This heat can reduce the longevity of a display.

To make matters worse, displays are sometimes positioned in such a way that heat is trapped rather than dispersed.

This increases the probability of overheating even more.

A display that overheats has to be repaired (or replaced).

When the damage is caused by extreme heat, most manufacturers will not respect the warranty, leaving the display owner to foot the tab.

Most electronics perform best in cool, dry environments. This is why, if you've ever been inside a company's data room, you've probably noticed that it's maintained cooler than the rest of the facility. Many of these rooms resemble giant refrigerators (which, as we all know, aren't free to run).

Outdoor high-brightness screens, on the other hand, are rarely used in chilly spaces. So, for them to stay cool, they must have a temperature control system. Grills, fans, air conditioning devices, closed-loop water/liquid cooling components, and even strategic positioning of their inner components as well as their physical locations within their surroundings are common components of temperature control systems.

While many of these cooling solutions seek to solve the problem of overheating, they frequently create new challenges, not only in terms of expense but also in terms of the equipment's potential for generating condensation, another significant enemy of electronics.

Cooling systems add weight as well. When you add a large cooling device to the interior of an already-heavy digital display, you create a unique circumstance in which the unit can be damaged if moved carelessly.

This all gets us back to costs; not only do you have to pay for the cooling system, but you also have to pay to run it! It raises the unit's energy consumption. As a result, an already huge electrical bill compounds into an even larger electrical expense over months and years of operation.

You can't simply lower this cost since you risk destroying the components inside the display, such as the liquid crystals, which only work at certain temperatures. If they ever go over or below that range (even for a short time), they may change to a non-liquid state and lose their capacity to display images forever.

This results in the phenomenon known as "blackout," which defines what you see on your display when the screen goes black. The power is turned on. The music is playing, but there is nothing to see. It's not a huge issue if something happens on your TV when you're watching Maury Povich. In any case, there was nothing to observe. But if that happens during the Super Bowl, start freaking out!

When blackouts spoil your viewing experience, it's more than simply a disappointment...It also necessitates the necessity for the repair of display parts or the replacement of the entire machine. And, as we would expect, this is another thing that will necessitate you reaching for your wallet.

4. Reduced Portability

Many high-brightness monitors are permanently installed in fixed positions. They are designed to remain exactly where they are installed, never moving. Many business owners are unconcerned about their limited mobility because they only want information displayed in a single, specified region. However, not all businesses are the same, and not all are easily satisfied. Some have more dynamic requirements, such as requiring a display to be in one location for a set period (such as a golf event) and then shifted once it has served its function. High-brightness signs frequently present additional issues for this group of persons.

Because of their massive backlight and thermal management systems, high-brightness displays can be rather heavy and difficult to transport. They're also limited to regions with local power sources because most batteries aren't currently powerful enough to power them. Of course, you could always power that high-brightness display with a generator. However, generators have drawbacks as well. The most common: they, too, are expensive, and they are often loud and detract from the event's emphasis.

The preceding explanations summarize the entire quandary that high-brightness displays imply. While high-brightness displays are far brighter than ordinary displays, we notice that we pay a price for that brightness, not only financially, but also in higher heat loads, less mobility, increased blue light, and other factors. It appears that the decision is between a printed sign and one of a hundred less-than-ideal digital high-brightness possibilities. But wait... what if there's a third option?

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