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Three factors that should be paid attention to when choosing small-pitch LEDs

by:Toponetech     2021-05-01
Small-pitch LED display screens are used in indoor applications. Low brightness and high gray are the prerequisites. In order to ensure the comfort of viewing, the first thing users should pay attention to when buying small-pitch LED products is the brightness problem. Relevant studies have shown that, in terms of human eye sensitivity, the brightness of LED (active light source) is twice that of passive light source (projector and liquid crystal display), and to ensure the comfort of human eyes, the small-pitch touch display The brightness range can only be between 100cd/m2-300cd/m2. However, in the traditional touch display technology, reducing the screen brightness will cause the loss of grayscale, and the loss of grayscale will directly affect the picture quality. Therefore, an important criterion for high-quality small-pitch LED screens is to achieve low brightness. High gray technical indicators. In the actual purchase, users can follow the principle that the more brightness levels that the human eye can recognize, 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, and the recognized brightness The more levels, the greater the color space of the display, and the greater the potential for displaying rich colors. Regarding the selection of dot pitch, it is necessary to pay attention to the balance effect and technology. Compared with traditional LED display, the outstanding feature of small pitch LED display is the smaller dot pitch. In practical applications, the smaller the dot pitch, the higher the pixel density, the more information capacity per unit area can be displayed at one time, and the closer the distance suitable for viewing. On the contrary, the longer the distance suitable for viewing. In view of the popularity of the small-pitch LED concept, many industry users naturally think that the smaller the dot pitch of the product, the better. However, this is not the case. If the LED display wants to achieve the best visual effect, it has the best viewing distance, and the small-pitch LED display is naturally no exception. If industry users want to make simple calculations, there is an established formula, that is, the best visible distance u003d dot pitch/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 actual purchase, users must comprehensively consider their own cost, demand, application range and other factors. Resolution selection, pay attention to the matching with the back-end signal transmission equipment. For small-pitch LED high-definition large screens, the smaller the dot pitch, the higher the resolution, and the higher the resolution, the higher the picture definition, which is also positive. It is the marketing focus of manufacturers for small-pitch LED displays. 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, they must also consider the combination of it and the back-end signal transmission product.
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