LED display screens have been in the Chinese market for a long time, but people's awareness of LED display screens is not popular enough. Let's describe some related knowledge of LED display screens for your reference.
1. What is an LED graphic screen? What is LED video screen?
An LED display that can only play graphics and text without gray levels is called a graphic screen; an LED display that can play graphics and text without gray levels, as well as graphics and video images with gray levels is called It is a video screen (the video screen is divided into full-color LED video screen and dual-primary LED video screen).
2. What is an indoor LED display? What is outdoor LED display?
The LED display screen used indoors is called indoor LED display screen. The light intensity of the light emitting tube is smaller than that of the outdoor screen, and no waterproof box is needed. The opposite is true for outdoor display screens, where the light intensity of the light emitting tube is high, and the waterproof and dustproof levels are also high. As for the pixel density is determined by specific requirements, the pixel density of some outdoor screens may be higher than that of some indoor screens.
3. What are the pixels of the LED display?
A pixel is a basic display unit of a display screen, and is generally composed of red, green, and blue light-emitting diodes (also called sub-pixels). For example: the pixels written in some display design schemes: 2R1G1B, which means that the basic imaging unit of the display is composed of 2 red LEDs, 1 green LED, and 1 blue LED, according to the optical three The principle of primary color is to decompose the real-time state of each pixel from the video source into three signals of red, green and blue, which are processed by the system and passed to the corresponding pixel unit on the LED display to drive the corresponding color light-emitting diodes. That is, the video source is mapped on the LED display screen.
4. What is the pixel density of LED display?
The number of pixels per square meter is called pixel density. The smaller the dot pitch of the LED display, the higher the pixel density; the larger the dot pitch, the lower the pixel density. Pixel density is a characteristic index of the details of the image of the display screen. Under the premise of the same LED display area, viewing at the same distance, the pixel density is large, the image is relatively clear, and the image with small pixel density is relatively rough. Generally speaking, indoor video screens have a short viewing distance and a large pixel density; outdoor video screens have a long viewing distance and a small pixel density, but sometimes the pixel density of an indoor screen may be smaller than that of an outdoor screen, depending on the specific situation. Resolution is the total number of pixels of the display screen, which determines the information capacity of a display screen.
5. What is the gray scale of LED display?
Grayscale Grayscale uses black tones to represent objects, and each grayscale object has a brightness value from 0% (white) to 100% (black). When converting grayscale objects to RGB, the color value of each object represents the grayscale value before the object. You can also convert grayscale objects to full-color objects. For digital full-color display technology, grayscale is also called the grayscale or grayscale. The brightness level from the lowest brightness to the highest brightness is called the grayscale. Grayscale is the determining factor of the number of displayed colors. Within a certain range, the higher the gray scale, the richer the displayed colors and the finer the picture, the easier it is to express rich details. Although grayscale is the deciding factor in determining the number of colors, it does not mean that the greater the unlimited, the better. The higher the gray level, the higher the cost, but the price / performance ratio drops.
As mentioned above, the selection of LED display requires an experienced and professional manufacturer tailored to the specific environment of installation, the amount of budget, and the expected effect that the customer wants to achieve, in order to achieve the highest cost performance and the best display quality effect.
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