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LED Display Screen is more and more popular,especially outdoor led display widely used for outdoor advertising with large led screen size, large size means high power consumption , a dozens of square meters led video wall usually reach tens of kilowatts, with numbers of led display screen increasing, energy issue is becoming more and more important for led display industry all over the world, So how to make a Lower Power Consumption Energy Saving LED Display becomes an important subject in LED display design.
Table of Contents
1. What is an Energy Saving LED Display?
2. Energy Efficient Displays Features
3. Benefits of Energy Saving LED Screen
4. Applications of Energy-efficient Displays
5. LED Energy Saving Display Consumption and Brightness
6. How to Calculate the Consumption and Compare with Traditional LED Displays?
1. What is an Energy Saving LED Display?
An Energy Saving LED display is a type of digital screen that utilizes advanced LED (Light Emitting Diode) technology to deliver high-quality visuals. These displays are designed to consume significantly less power compared to traditional LED displays or other display technologies, making them an energy-efficient solution for various applications.
The energy efficiency of these displays is achieved through mechanisms like improved LED components, adaptive brightness control, and smart management systems. These features work together to reduce power consumption while maintaining optimal performance and image quality.
A truly Energy-Efficient LED Screen, not just improvment of led screen hardware and led control software technology, but aslo the overall program on the results of led display screen innovation. For example, Outdoor P16mm 1R1G1B LED Display aim at reducing the cost of electric power, and the energy-saving efficiency reached more than 50%.
2. Energy Efficient Displays Features
High Brighntess LED Low Voltage: Reliable LED Chips with Low Voltage but High Brightness to 7000-7500 Nits.
Low working Voltage: To reduce electromagnetic interference ;Adopt double circuit 2.8V & 3.8V for Modules and Control system. LINSN LED will bring you to learn more about the working principle of energy saving led screen.
(1) Low Power Supply Design For LED Display Module
First,We need to know that the best working voltage of LED Lamp is about 1.8V-2.8V(Red lamp) and 2.8V-3.8V(Blue and Green lamp). However, the supply voltage provided by the traditional LED Display is much higher than its required working voltage. So it can reduce unnecessary losses after adopting the new-designed power supply.
For the Traditional LED Display, the power supply adopts a single-voltage unified power supply of 5V DC. But the energy-saving power supply is based on a dual-voltage power supply design. RED LED Chip with 2.8V DC power supply,GREEN,BLUE LED Chip with 3.8V DC Power Supply.It means the R, G, B lamp will work under its normal working voltage.
(2) Different Design of PCB Board
The Energy-saving LED Display also has its own unique PCB board design, with the energy-saving power supply to achieve accurate voltage distribution. Change a words, the lamps can be swimming at the ideal work environment, the PCB equal the swimming pool and the power supply equal the water. This design can also be called “Common Cathode”.
On the contrary, normal LED Display, we call it “Common Anode”. As it uses a unified power supply design, no matter it need more or less voltage.That’s why the energy-saving led screen also called by Common Cathode Energy-Saving LED Display.
(3) Different Design of Driving IC
Another indispensable element is the Driver IC. The innovation of Drive IC is mainly reflected in its low switching voltage and common cathode design, the former can save energy by 5%-8%, the latter can save energy by 20-25%.
Here we take common IC:ICN2037 and energy saving IC:ICN2049 for example.
ICN2049 is a Common Cathode Drive IC designed specifically for energy saving LED display, using 16 channels constant current output same as common IC: ICN2037. But it works at a lower and more stable voltage environment. Making the led screen to save energy effectively.
Function Contrast | ||
Item | Common IC: ICN2037 | Energy Saving IC: ICN2049 |
Output current setting range | 3～45mA@VDD=5V | 0.5～25mA×16@VDD=5V,VDS =0.3V |
Current accuracy | Between channel :< ±3.0% | Between channel :< ±2.0% |
Working Voltage | VDD=3.3～5V | VDD=2.6～5V |
>>.From this sheet, the voltage(U) of ICN2049 is lower than ICN2037. Consider both of them are constant current driver, so the current(I) is constant.
>>.At the same time, according to the data, the output current of ICN2049 is also smaller than normal IC.
>>.P=U*I, when both U & I decrease, it means that the power consumption has been greatly improved.
Above all, you will find that these design changes are mainly to reduce voltage and current, so as to achieve energy saving, lower consumption, lower temperature effect.
Another indispensable element is the Driver IC. The innovation of Drive IC is mainly reflected in its low switching voltage and common cathode design, the former can save energy by 5%-8%, the latter can save energy by 20-25%.
Here we take common IC:ICN2037 and energy saving IC:ICN2049 for example.
ICN2049 is a Common Cathode Drive IC designed specifically for energy saving LED display, using 16 channels constant current output same as common IC: ICN2037. But it works at a lower and more stable voltage environment. Making the led screen to save energy effectively.
Function Contrast | ||
Item | Common IC: ICN2037 | Energy Saving IC: ICN2049 |
Output current setting range | 3～45mA@VDD=5V | 0.5～25mA×16@VDD=5V,VDS =0.3V |
Current accuracy | Between channel :< ±3.0% | Between channel :< ±2.0% |
Working Voltage | VDD=3.3～5V | VDD=2.6～5V |
>>.From this sheet, the voltage(U) of ICN2049 is lower than ICN2037. Consider both of them are constant current driver, so the current(I) is constant.
>>.At the same time, according to the data, the output current of ICN2049 is also smaller than normal IC.
>>.P=U*I, when both U & I decrease, it means that the power consumption has been greatly improved.
Above all, you will find that these design changes are mainly to reduce voltage and current, so as to achieve energy saving, lower consumption, lower temperature effect.
3. Benefits of Energy Saving LED Screen
Energy-saving LED screens offer several advantages over traditional display technologies, particularly in terms of cost savings, environmental impact, and performance. Here are the key benefits:
(1) Cost Efficiency
Energy-saving LED screens help significantly reduce electricity consumption, leading to lower utility bills. This is especially beneficial for large-scale displays, such as billboards or digital signage, where energy costs can add up quickly. Over time, the savings on electricity can offset the initial investment in the technology.
(2) Environmental Impact
By consuming less power, energy-saving LED screens help lower the carbon footprint, contributing to sustainability goals. Reducing energy usage means fewer resources are required for electricity generation, which ultimately helps reduce overall environmental impact and supports green initiatives.
(3) Longer Lifespan
Energy-efficient LED screens generally last longer than traditional displays due to reduced strain on components like diodes and power supplies. The extended lifespan of these screens means fewer replacements and less maintenance, saving businesses both time and money in the long run.
(4) Adaptive Brightness Control
Many energy-saving LED screens come with adaptive brightness features, adjusting their display based on the surrounding light conditions. This feature ensures optimal visibility while minimizing energy consumption during low-light conditions, further enhancing efficiency.
(5) Reduced Maintenance Costs
Because energy-saving LED screens are more durable and less prone to overheating, they require less frequent servicing. The technology behind these displays minimizes wear and tear, leading to lower maintenance costs over time and ensuring consistent, reliable performance.
(6) Enhanced Image Quality
Despite their energy efficiency, these LED screens still deliver high-quality images with vibrant colors and sharp clarity. This makes them ideal for a wide range of applications, from outdoor advertising to public displays, where both energy savings and visual impact are equally important.
(7) Better Return on Investment (ROI)
Energy-saving LED screens offer a higher return on investment thanks to their low energy consumption, longer lifespan, and minimal maintenance needs. These factors contribute to a lower total cost of ownership, making them a smart choice for businesses looking to maximize value over time.
(8) Smart City Integration
In the context of smart cities, energy-saving LED screens contribute to more efficient urban infrastructure. These displays can be integrated into smart systems for traffic management, public information, and advertising, all while minimizing energy waste and supporting sustainability efforts in urban development.
4. Applications of Energy-efficient Displays
(1) Outdoor Advertising
Energy-efficient LED screens are perfect for outdoor billboards and digital signage, offering vibrant displays while reducing energy costs.
(2) Public Infrastructure
Cities use energy-saving displays for real-time information, like traffic signs and emergency messages, reducing power consumption in urban areas.
(3) Retail and Commercial Use
Energy-efficient LEDs are used in stores for product displays and promotions, helping businesses save on electricity while attracting customers.
(4) Transportation and Airports
Airports, train stations, and bus terminals use these displays for schedules and ads, running 24/7 with minimal energy use.
(5) Smart City Solutions
Energy-efficient LEDs support smart city projects like traffic management and public information boards, enhancing sustainability in urban spaces.
(6) Sports and Entertainment Venues
Stadiums and event venues use energy-saving LED screens for live feeds and ads, providing clear visuals while minimizing energy consumption.
5. Energy Saving LED Display Consumption and Brightness
As shown in the testing of power consumption, the consumption of common led display is about 788KW/H per square, consumption of energy saving led display is about 487KW/H per square. It can really achieve 50% energy saving!
From the testing, the brightness of energy saving led display can reach around 6500 Nits. Same as the common led display. The voltage cut-down work didn’t reduce the brightness, on the contrary, as the unnecessary heating problem solved, the working temperature turns down, which helped to strengthen the brightness performance and the lifetime of the led display.
6. How to Calculate the Consumption and Compare with Traditional LED Displays?
Calculate as 50sqm led screen ( Daily working time 10h，1KW = USD 0.2)
Traditional P16mm Outdoor LED Display:
Average 0.28KW/sqm
Electricity Cost 1 year：= $0.2x 0.28(Kw/m2) x 50(sqm) x 10(hours/day) x 365(days/year) = $10,220
Low-cost P16mm Outdoor LED Display:
Average: 0.12KW/sqm
Electricity cost 1 year：= $0.2x 0.12(Kw/m2) x 50(sqm) x 10(hours/day) x 365(days/year)= $4,380
The Result: Saving $10,220-4380=$5,840 annually on electricity cost for 50sqm LED Display Screen.
7. Future Trends in Energy Saving LED Display Technology
(1) Solar Integration
Energy-saving LED displays will increasingly use solar power, reducing reliance on grid energy and lowering operational costs.
(2) Smarter Technology
LED screens will have AI and IoT features, adjusting brightness automatically and optimizing energy use based on real-time data.
(3) Flexible Designs
LED displays will become more modular and customizable, fitting a wider range of applications from large billboards to small digital signage.
(4) Better Durability
Future energy-efficient LEDs will be more durable, with improved resistance to weather, temperature changes, and wear, extending their lifespan.
(5) Superior Image Quality
LED screens will offer better brightness and color accuracy, making them ideal for high-quality displays while still saving energy.
(6) Smart City Expansion
Energy-saving LEDs will be more widely used in smart cities for public information, traffic management, and sustainable urban solutions.
8. Conclusion
Now more and more led display customers prefer to purchasing low consumption led display Panel for their outdoor advertising applications, if you are looking for a large size outdoor led screen,we strongly recommend you to choose the Common Cathode Energy Saving LED Display.
Linsn LED is a leading Low Power LED Display Manufacturer in China with over 12 year experience, if you want to learn more about Common Cathode LED Screen,please feel free to contact us.