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How to Deal with the Moire Effect on LED Screens Effectively

by | Nov 2, 2023 | Blogs | 0 comments

LED displays have changed the way we engage with images. They are increasingly ubiquitous in daily life, featured in everything from televisions to desktop computers and enormous billboards. LED screens, like any other new technology, have unique characteristics and challenges. One of the problems that could potentially damage LED displays is the Moire effect. In this article, we’ll look at what the moire phenomenon is, what causes moire on LED screens, and, most importantly, how to handle it effectively.

What is the Moire Effect?

Moire is a visual phenomenon caused by the overlap of two repetitive patterns or layouts, producing an unexpected interference effect.

This pattern can take the form of curved or rippling segments, dots, or other aberrations. The moire effect may emerge when a single-pixel grid of an LED display mixes with other behaviors, such as a complex surface or grid in the content being displayed. This interference produces an undesired and distracting structure, lowering the visual experience’s effectiveness. Consider a screen displaying an LED image with intricate lines and a dotted pattern to grasp the moire phenomenon better. The moire effect is visible when the distance between each pixel on the screen matches the distribution of the patterns in the content. As a result, an unexpected and disruptive pattern emerges, which may negatively impact the viewing experience and divert the audience from the intended content. Recognising and managing the Moire effect and its origins is critical for efficiently resolving and minimising this issue.

Moire Effect

The Causes of Moire on LED Display Screens

Before diving into easy fixes to the moire effect on LED displays, you must comprehend what causes this visual effect. More on LED displays are caused by several sources, including:

  • Resolution Mismatch:

A resolution discrepancy is one of the critical factors causing moire. Moire lines can occur if the resolution of the projected image differs from the original resolution of the LED panel. Rendering a picture with a low resolution on a high-resolution monitor, for example, can cause moire. This happens when the individual pixels in the photograph do not line adequately with the display’s pixel matrix.

  • Pixel Grid Interference:

LED panels have a uniform grid of pixels that may interact with other layouts. If the content involves small details, such as scattered patterns or checkered clothing, moire is common. When these trends intersect with the pixel arrangement, they can cause interference, giving rise to the glimpse of moire.

  • Scaling and Zooming:

Making an image larger or smaller to fit the screen might generate artefacts influencing moire. The resizing process, regardless of zooming in or out, can result in ragged edges and variations in the final result. These artefacts can interact alongside the pixel pattern on the LED panel, causing moire patterns to appear.

  • Colour Interaction:

The colours used in the exhibited content are also susceptible to the moire effect. Moire can be exacerbated by high-contrast colour combinations or colour motifs that are closely matched. The interaction of colours, particularly when they mix with the pixel grid, can cause undesirable visual distortions.

Understanding these sources is critical for dealing with the moire influence on LED screens properly. You can take specific actions to lessen or prevent moire by understanding how the resolution mismatch, pixels grid interference, sizing and zooming difficulties, and colour combinations influence it. In the following part, we will look at techniques and solutions for dealing with moire on LED panels and providing an exceptional viewing experience for your viewers.

How to Solve the Moire Effect on LED Screens

When it concerns LED displays, the moire effect may appear to be a challenging task. Nevertheless, with the correct tactics, you may efficiently deal with this problem and provide the viewers with a visually appealing service. Here are eight solutions to the moire issue on LED screens:

Moire Effect

  • Match Resolutions:

To minimise the moire effect, double-check that the resolution of the projected content corresponds to the native resolution of the LED screen. When the dimensions match, each of the pixels on the display aligns with what is shown. This simple change can dramatically lessen the likelihood of moire happening.

  • Anti-Aliasing:

Anti-aliasing methods are essential for scaling or zooming content to fit onto the monitor. Anti-aliasing functions by smoothing down the edges of images. This method is beneficial when showing text or visuals with intricate details.

  • Choose High-Quality Content:

Superior quality movies and pictures that are optimised for the resolution of your screen have been less likely to produce moire artefacts. Choose content that complements the functions of your LED display wherever possible. A more smooth and pleasurable watching experience is ensured by higher quality material.

  • Modify Screen Settings:

Most new LED panels include options for fine-tuning display properties. Test with different parameters like brightness, contrast, and sharpness. You can reduce the prevalence of moire and improve overall picture quality through simple modifications.

  • Use Optical Filters:

Including lens filters in the window can be a successful technique to reduce moire in some instances. These filters, commonly designed of miniature mesh or acrylic, work by interrupting distortion patterns. They improve the viewing perception by reducing the sight of moire lines.

  • Consider Content Design:

Once you are in charge of the content projected on the LED monitor, you are able to avoid moire from the beginning. Avoid applying designs or textures that have been shown to cause moire. A few design tweaks can go a long way towards eliminating moire from showing in your content.

  • Calibration and Testing:

It is critical to calibrate your LED screen on a regular basis to guarantee it is working efficiently. This calibration may include altering pixel symmetry, colour settings, and additional display factors to achieve the desired result. Furthermore, extensive testing before public presentations is a proactive strategy to detect while addressing moire issues in advance, providing an effortless viewing moment for your viewers.

  • Processing:

Processing techniques can be used to minimise moire in videos. There are software programs that can customise the unattractive patterns, thereby improving the ultimate display picture. These techniques are handy if you have moire during video editing. You can enhance the content and lessen the likelihood of moire by using the processing method.

Despite the moire effect being a prevalent problem with LED panels, it is not impossible to overcome. You can handle with moire while offering your viewers a visually appealing and uninterrupted experience through implementing measures to optimise resolutions, make use of anti-aliasing, choose premium content, adjust display settings, examine optical filters, be alert of content layout, frequently calibrate and test the display, and utilise post-processing techniques. Considering these techniques, LED screens may reach their maximum potential without being hampered by undesired visual artefacts.

Related Article:

What is a Moire Pattern?How to reduce Moire Pattern of LED display


Moire is a prevalent issue that can degrade the visual clarity of LED displays. Determining the sources of the problem and putting viable solutions in place is critical for offering an uninterrupted and engaging viewing experience. You may drastically reduce the likelihood of moire by synchronising resolutions, utilising anti-aliasing, optimising content, altering screen settings, contemplating filters, and setting up screens. Proper design and subsequent processing are equally important in avoiding and fixing this undesirable visual distortion. You may enjoy the beauty of LED displays without being distracted by moire patterns if you use the appropriate tactics and pay careful attention to detail.

About the Author

Kris Liang

Kris Liang

Founder/LED display expert

Kiris Liang is the founder of Doitvision. 12 + years in LED visual industry. Full passion of LED, product designer & chief salesman. Looking for teammate of technical/ marketing / sales.

Connecting people relative with LED displays.

Email: kris@doitvision.net