Small pitch LED display to choose from
In today’s large-screen display field, small-pitch LEDs have become a well-deserved hot spot, and the application market scale is rising rapidly. For many industry users, although they are no strangers to small spacing under the marketing bombardment of manufacturers, they still lack confidence when it comes to how to choose products that suit them. So, in the actual purchase, what issues should industry users pay attention to, in order to maximize the utilization rate of their own investment on the premise of meeting the application requirements?
For indoor application of small-pitch LEDs, “low brightness and high gray” is the premise
In order to ensure viewing comfort, users should first pay attention to brightness when purchasing small-pitch LED products. Relevant studies have shown that in terms of the sensitivity of the human eye, the brightness of LEDs (active light sources) is twice that of passive light sources (projectors and liquid crystal displays). The brightness range can only be between 100 cd/m2-300 cd/m2. However, in the traditional LED display technology, reducing the brightness of the screen will cause the loss of grayscale, and the loss of grayscale will directly affect the picture quality. Therefore, an important criterion for judging high-quality small-pitch LED screens is to achieve “low Bright high gray” technical indicators.
In actual purchase, users can follow the principle of “the more brightness levels that can be recognized by the human eye, the better”. The so-called brightness level refers to the brightness level of the image that the human eye can distinguish from the darkest to the whitest. The more brightness levels, the larger the color space of the display, and the greater the potential for displaying rich colors.
Regarding the selection of dot spacing, attention should be paid to the balance effect and technology
Compared with traditional LED displays, the outstanding feature of small-pitch LEDs is the smaller dot pitch. In practical applications, the smaller the dot pitch, the higher the pixel density, the more information capacity that can be displayed per unit area at one time, and the closer the viewing distance is. On the contrary, the longer the viewing distance is. In view of the popularity of the concept of small-pitch LEDs, many industry users naturally think that the smaller the dot pitch of the purchased products, the better, but this is not the case.
In order to achieve the best visual effect, the LED display screen must have the best viewing distance, and the small-pitch LED display screen is no exception. If industry users want to make simple calculations, there is an established formula, that is, the best visual distance = point spacing / 0.3~0.8. It should be known that the smaller the dot pitch, the higher the cost of the small-pitch LED display. Therefore, in the actual purchase, users should comprehensively consider their own cost, demand, application range and other factors.
When choosing the resolution, pay attention to the collocation with the back-end signal transmission equipment
For small-pitch LED dislays, the smaller the dot pitch, the higher the resolution, and the higher the resolution, the higher the clarity of the picture. This is exactly the marketing focus of manufacturers for small-pitch LEDs. However, in actual operation, industry users want to build the best small-pitch LED display system. While paying attention to the resolution of the screen itself, it is also necessary to consider its collocation with back-end signal transmission products.
For example, in security monitoring applications, the front-end monitoring system generally includes video signals in D1, H.264, 720P, 1080I, 1080P and other formats. However, not all small-pitch LED screens on the market can support the above several Therefore, in order to avoid waste of resources, users must choose according to their needs when purchasing small-pitch LED screens, and avoid blindly catching up with trends.
At present, small-pitch LED displays are still in the initial stage of development. In order to gain higher market attention, technological innovation has become an important selling point. Therefore, in terms of pitch technology, “no minimum but smaller” has become the mainstream trend of the industry. This has virtually increased the attention of industry users to the spacing. In actual purchase, it is easy to pay too much attention to catching up with the trend and ignore other factors. To put it simply, a cost-effective small-pitch LED system is the combined effect of many factors, and the three aspects emphasized in this article are the objects that users focus on when purchasing.