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Issue #7: Under the Hood – A Deep Dive into the Internals of LED Screens

Tuesday, October 29, 2024

Digital Display Insider/Digital Display Insider Newsletter/Issue #7: Under the Hood – A Deep Dive into the Internals of LED Screens

Editors Note

Welcome to this issue of Digital Display Insider. In this issue, we will be giving you valuable information as you navigate the mobile digital billboard (M.D.B.) startup process. Today, we’re going under the hood to explore the internal components of an LED screen—knowledge that every buyer should have before making a purchase.

Understanding how LED screens are built isn’t just technical trivia—it’s essential for making an informed decision when buying a truck. From pixel pitch and refresh rates to diode quality and internal wiring, the details inside the screen can have a huge impact on both the truck’s performance and its price. Knowing what to look for can save you from overpaying for features you don’t need or, worse, ending up with a low-quality screen that underperforms.

In this issue, we’ll break down the key internal components of LED screens and explain what matters most when evaluating your options. Whether you’re in the market for your first truck or upgrading your fleet, this knowledge will empower you to ask the right questions, avoid unnecessary expenses, and make the best investment for your business.

A Deeper Look Inside: Understanding the Internals of an LED Screen

When it comes to buying a mobile digital billboard truck, it’s easy to get caught up in the big picture—how the truck looks, how the ads display, and whether it will attract attention. But what’s inside the LED screen matters just as much, if not more. The internal components of your LED screen play a major role in determining the quality of your display, how well it performs, and ultimately, whether or not you’re getting your money’s worth. Knowing what to look for can help you avoid overpaying and ensure your investment lasts for the long haul.

Gold vs. Copper Wiring: Why It Matters

One of the first things to understand is the wiring inside the screen, particularly the difference between gold wiring and copper wiring. Gold is the premium option, known for its higher conductivity, corrosion resistance, and durability. Over time, gold wiring maintains its performance even under harsh conditions, like extreme heat or humidity, which makes it ideal for outdoor use.

On the other hand, copper wiring—while cheaper—is more prone to oxidation and degradation. That means copper-wired screens may show performance issues over time, especially in environments where the truck is exposed to the elements. If you’re planning on using your truck in all kinds of weather or keeping it on the road for extended hours, opting for gold wiring can save you from future headaches and costly repairs.

Refresh Rates: Don’t Get Caught with a Cheap Chip

The refresh rate is another critical component of an LED screen, and it’s one area where you can’t afford to cut corners. The refresh rate refers to how quickly the screen updates, measured in hertz (Hz). A higher refresh rate—like 3,840Hz—ensures smooth playback of videos and clear visuals, even when the truck is in motion or being photographed.

Cheap screens often come with low-quality refresh chips, which result in lower refresh rates. These screens may look okay at first glance, but when photographed, faint horizontal lines or flickering become visible. This can ruin the effectiveness of your advertising, especially when clients expect high-quality photos of their campaigns. Be sure to ask about the refresh rate and the type of chip used—if the answer sounds vague or the rate is 1,920Hz or below, you’re likely dealing with a screen that won’t meet your standards.

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LED Quality: All LEDs Are Not Created Equal

Another major component to consider is the quality of the LEDs themselves. Not all LEDs are the same, and there is a significant difference between high-end diodes from reputable manufacturers and cheaper alternatives. Premium LEDs, like Nationstar or Kinglight, provide brighter, more vibrant colors and maintain their brightness over time. Cheaper LEDs may dim quickly, develop dead pixels, or display uneven colors, making your advertisements look dull and unprofessional.

When choosing a truck, make sure to ask about the source and quality of the LEDs. It’s worth investing in high-quality components up front—otherwise, you may find yourself replacing panels more often than you’d like, which can be a costly and time-consuming process.

The Bottom Line: Make an Informed Investment

The internals of an LED screen may not be the first thing you think about when buying a truck, but understanding these components will give you a huge advantage. Ask the right questions about the wiring, refresh chips, and LED quality to ensure you’re getting a product that will deliver the performance you need without unnecessary maintenance costs.

Remember, a well-built screen isn’t just about what looks good today—it’s about consistent performance over time. If you invest in high-quality components, your truck will serve you reliably and provide better results for your clients, helping you grow your business with confidence.

Jerry Teeter LED Truck Consulting www.jerryteeter.com/consulting

Bonus Video

Want more information about this topic from industry expert, Jerry Teeter?  Join our free Digital Display Insiders Facebook Group where Jerry releases a more indepth Bonus Video each issue.  Click the thumbnail below to watch the video.

VIDEO TRANSCRIPT
 Welcome, Insiders, to another week of Digital Display Insider, where we're helping everyday consumers make educated decisions when they purchase their new LED truck. And this week we want to dive into the guts of the LED screens and give you guys some information that will help you. Not only not overpay for your LED screen, but make sure that you're getting a high quality LED screen.

So it will last you for years to come. And so we're going to jump right into this. Why is this important? I just mentioned it. If you just trust the word of the person selling you this truck or the screen that they're giving you high quality stuff, then you could easily be overpaying for what you're getting.

And, my experience has been, I've never met someone who says. Yeah, I'm giving you the cheapest thing that I can. They're all going to tell you that it's high quality, that it's good stuff, but you need to be able to ask the right questions to be able to determine for yourself if what you're getting is what they're telling you.

And so the first thing when it comes to LED screens that you want to start with is the internal wiring. This is the wiring that's in the PCB board that everything is the diodes and everything that's connected. There's really two, two main types of wiring. There's gold and there's copper.

Copper is obviously cheaper and that's the big thing it's got going for it. The problem though is copper is over time going to oxidize. It's going to degrade faster. And especially in climate human climates it's gonna, the oxidization is gonna be prone to just creating issues.

Sometimes when you see an LED screen and these pink squares or blue squares, A lot of times that's tied to either the wiring or the chips or a little bit of both. And that's where this comes in. The wiring is extremely tiny and some, and on those chips you have all these little fingers.

And if you get oxidization in between those, that starts shorting things out and it messes up the screen itself. And again it's going to be something that you won't see this on day one when you first buy your screen. These are issues that show up over time that by the, by that point you're either out of warranty or it's just too late.

And so it's something that you want to be aware of up front. So for sure, go with gold wiring, your screens are going to be more expensive, but it will pay off in the long run and your screens will just last a lot longer. Than if they were with copy copper. The second piece that you wanna look at is called the IC chips.

Those are the little computer chips that are on the backside of the PCB Board, and that's what's gonna control your refresh rate. Now, this is what you'll see the most prevalent of if you have the cheaper. How many of you have seen pictures of LED screens and you have the lines going across the screen?

Sometimes it's worse than others, but it's definitely there. It's distracting. That's the result of a low refresh trip chip. Anything that's 1920 Hertz or below is going to have those lines because the refresh of the camera and the refresh of the screen are different and the camera is seeing that refresh rate.

Now, again, 1920 and a nine 60 chips are a lot cheaper. And in order to keep costs down, a lot of these guys are buying these screens with these low refresh chips. But and when you go to buy the truck, chances are you're probably not going to take pictures of it right there when you buy it or they'll just explain it away.

But, when you start giving pictures to clients, they will ask about it. You're going to constantly be explaining it away, and it's just not a great representation. Any screen that I order always has the 3840 chips. That way you can just have beautiful pictures of your truck and you don't see the lines.

It's really rare that that you'll see lines in any of the pictures of our trucks. Yeah, stick with 3840 and higher refresh chips. And then the last thing is the actual LED diodes themselves. There's two really main manufacturers that most LED screens are using now in the range of screens that you're gonna buy.

And those are nationstar and kings. King Light Nationstar is by far the most popular king Light is not as popular, but still a pretty decent they have some decent LEDs, and so if there's anything other than nation starter, king light, especially if it's a cheaper screen. I would stay away from it.

The reason that those others the difference you're going to see there is dead pixels. The capsules can die at a lot higher rate if it's a either a low quality LED or the manufacturing process of those was not good. I've got a truck right now that's on consignment. It was built by Spark Mobile Billboards.

And this truck was almost 300, 000 when it was new. It's a giant truck. It's got a lot of square footage of screen. And when the customer brought it to me, he was hoping to sell it for about Right around 200, 000 to 210, 000 he brought it to me, it was about three years old, but it only has 40, 000 miles on it.

By rights, he should be getting that kind of money for this truck. The second he turned the screen on and I saw it, there are dead pixels everywhere. Every single module has multiple dead pixels in it. And it creates a freckling effect. And I had to be the bearer of bad news for him and tell him that his truck was basically worth the chassis.

Because in order to rescreen that truck for the size of it and the amount of square footage it has. It's 100, 000 to rescreen that truck. And so now, he's taken a 100, 000 hit on this unit just a few years into it because the screens that were used on there had low quality stuff in it. And now, if they were to, I'll put it this way, a few thousand dollars on the front end getting good screens, maybe 10, 000 at the most.

would have prevented him from losing 100, 000 just a few years later. And so that's where it comes into play very much so those are really the main things you want to look for. And if you want to go deeper into this, feel free to reach out to me and we can schedule a call to go through some of this at a little deeper level, but at the end of the day, you want gold wiring, you want 3840 re Hertz refresh chips on your IC chips, and you want Nation Star LED diodes.

And you get those three things, you're gonna have a good set of screens, it will last you for a lot longer. If you need any consulting, you need help buying a truck, or just going through any of this process, you can book a consulting call with me at jerryteeter. com forward slash consulting. And we will see you next week.

Have a great week.

AUTHOR: 

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Jerry Teeter

Founder/CEO Legion LED Trucks

Jerry Teeter is a pioneer in the mobile digital billboard industry, with over a decade of experience operating and manufacturing state-of-the-art LED trucks. As the founder of Legion LED Trucks and the creator of Digital Display Insider, Jerry shares his expertise to help entrepreneurs and businesses succeed in this innovative advertising space.

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