What is small pitch LED screen

LED large screen?has long been widely used in the field of radio and television. Now the price of LED large-screen products has been greatly reduced compared with previous years, but they have a lot of defects, such as uneven picture and color temperature after use over time. In addition, the joints of LCD video walls will also interfere with the sight of TV viewers. Therefore, if the budget allows, I strongly recommend that radio and television customers choose small-pitch LED large-screen products, which do not have these defects of LED products, and have a longer service life.

The actual display effect of the?large LED screen?in the studio is another important factor in product selection. The conversion of camera positions and multi-camera shooting have put forward high requirements on the viewing angle and color temperature of the video wall, and LCD splicing is obviously not suitable. If you need the camera to close up the large?LED screen, the moiré pattern of the LCD screen is also a headache.

Product life is also a factor. Under low-brightness conditions (a common environment in the studio), the?large LED screen?can be used for a long time of 5 to 10 years and still maintain a long-lasting display effect. Therefore, in the long run, the comprehensive cost performance of?LED large screen?is higher than that of LED large screen products.

Why is pixel pitch so important? How did it develop step by step?

The pixel pitch of the large?LED screen?determines the resolution of the video wall. In the past few years, P3.9mm LEDs have been regarded as advanced products. Now, the?pixel pitch of LED?has been reduced to 0.9mm! 3.9mm is completely unsuitable for application in the radio and television industry, and?LED products?with small pitch below 2.5mm should be selected according to the actual situation.

The dramatic drop in pixels has opened up a whole new opportunity for broadcast customers and system integrators. It is now possible to create ultra-high-contrast HD 4K+ resolution video walls that are truly seamless. Some leading LED large screen manufacturers have launched 0.9mm fine pitch LED products, which means we are approaching the resolution of LCD monitors. What’s even more amazing is that I have seen 0.7mm LED modules!

How to choose the manufacturer of LED large screen and small pitch products?

Many LED large screen manufacturers have been inspected over the years, and not all?LED video walls?can meet the requirements of broadcast display.

First of all, the competition in the?small-pitch LED?large-screen market is becoming more and more intense. Due to the advancement of technology, it is becoming easier and easier to produce?small-pitch LED?large-screen products, resulting in the emergence of a large number of new manufacturers. Also, many companies offer OEM products, so it can be difficult to determine who is the real manufacturer. In this case, you can’t simply assume that a company’s labelled product is made by them, otherwise the customer is likely to overpay.

A major factor that distinguishes many small-pitch LED large-screen production is the?small-pitch LED lamp beads. LEDs?with all-black packages are particularly important for radio and television displays that require high contrast. Therefore, you can’t just compare the prices of two 1.9mm small-pitch large screens, you also need to know what kind of lamp beads their products use.

The video processor will also affect the refresh rate and image uniformity of the?small-pitch LED?large screen. For example, some manufacturers have introduced large?LED screens?with moiré filters installed. In our experience, using this device can have an impact on the clarity of the LED image. To really eliminate moiré, we recommend using a larger screen with a smaller pitch. One of our heavyweight radio and television customers in the United States adopted a 1.2mm?small-pitch LED?large screen, which completely removed the moiré. There is also a drive IC to reduce the overall energy consumption of the?LED video wall, which is a value point for radio and television customers who care about energy saving.

Due to these differences above, we always recommend that radio and television users use the camera to test the module or panel to confirm its performance.

Technical analysis of the application of?small-pitch LED?splicers Necessary knowledge!

1. Signal output synchronization

The small-pitch LEDs are spliced into multiple signal outputs, which must be synchronous signals, otherwise the picture displayed on the display screen of the unsynchronized signals will be cracked and incomplete.

Especially when playing images in high motion, if the phenomenon of signal out-of-sync is particularly obvious, how can we ensure the synchronization of?small-pitch LED splicing?signal output, which is the key to the splicing system.

2. Graphics Processing Algorithms

The best display effect is a point-to-point display, which is a scaled down image.

Just using ordinary processing techniques will reduce the effect, and the image will appear jagged or missing pixels.

The image processing of the?small-pitch LED?splicing system is currently the best, which can ensure the display effect of the processed image.

3. Resolution output

The?small-pitch LED?splicing display is a large display that is spliced into pieces of?LED screens. The display size and resolution of each small-pitch LED splicing screen are the same, but the spliced large screen is not necessarily the same as the small one. Unit resolution is the same.

However, the?small-pitch LED?splicing controller can reasonably allocate resources, thereby effectively saving the use of small-pitch LED controllers and signal transmission equipment.

The correct three steps to choose high-quality?small-pitch LED products

1. It is a necessary prerequisite to choose?small-pitch LEDs?with low brightness and high gray

The first concern of users who choose?small-pitch LED products?is brightness. The brightness of?LEDs?is twice that of passive light sources, and the degree of comfort for the human eye is between 100cd/?2–300cd/?2. In actual purchase, users can follow the principle that the more brightness levels the human eye can recognize, the better.

2. Correctly understand the relationship between point spacing and display effect

The feature of?small-pitch LEDs?is a smaller dot pitch. The smaller the pixel density, the higher the pixel density, and the closer it is, the clearer it is. To achieve the best visual effect, you must have the best viewing distance. Then, the user can calculate the viewing distance according to the best visible distance=dot spacing/0.3~0.

3. The resolution of?small-pitch LEDs?and the matching of back-end signal transmission equipment are very important

In security monitoring applications, front-end monitoring systems generally include video signals in D1, H.264, 720P, 1080I, 1080P and other formats, but in practice not all small-pitch products support video in the above formats. Signal, when users buy?small-pitch LED screens, they must choose according to their needs, and avoid blindly chasing the trend.

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