LED from different areas of view, LED display screen can be based on application sites, primary colors, functions are divided into three categories.
First, according to the different application sites, LED display can be divided into indoor and outdoor two.
1. indoor screen
Mainly used in the room, in the production process is the first to make the light chip chip module (or digital tube), and then by the module splicing for a certain size of the display unit board, according to user requirements to display the unit board as the basic unit Spliced into the user's required size. According to the size of the pixel (pixel), the indoor screen is divided into φ3, φ3.75, φ5, φ8, φ10 and so on.
2. Outdoor screen
Mainly used for outdoor, in the production process is the first light-emitting chip package into a single light-emitting diodes, called a single lamp, for the production of outdoor screen lights are generally used to reflect the reflective cup to improve the brightness ; And then by more than one LED single light package into a single graph yuan or element module, and by the yuan tube or yuan module composed of dot matrix display unit box, according to user needs and display applications to a The display unit box is the size required for the basic unit. The box should be sealed in the design, in order to achieve the purpose of waterproof anti-fog, to adapt to the outdoor environment.
According to the density of the yuan, the outdoor screen is divided into 4096 points, 2500 points, 2066 points, 1600 points, 1024 points and other specifications.
Second, according to the color of the LED, LED display can be divided into single-color, dual-color, full-color three.
Single color
Each pixel has only one color, most of the red, because the red luminous efficiency is higher, you can get a higher brightness, you can also use green, it can be mixed, that part of the red, part of the green, part of the use of yellow.
Double color
Each element has red and green two primary colors, you can stack out the yellow, in the case of gray-scale control, through red and green different gray-scale changes, you can combine up to 65535 kinds of gray color.
3. full color
Also known as the three primary colors, each pixel has red, green and blue three primary colors, in the case of gray-scale control, through the red, green and blue different gray-scale changes, can be a good way to restore the natural color, 777,216 colors.
Third, according to the screen with the function, you can LED display screen is divided into the screen, graphic screen, depending on the screen and digital hybrid screen four.
1. Bar screen series
This type of display screen is mainly used to display text, can be used remote control input, can also be used with the computer online, send information through the computer. Can work offline. Because this type of screen made more than a bar, so called the screen.
2. Graphic screen series
This type of display is mainly used to display text and graphics, generally no gray control. It enters information through communication with the computer. Compared with the screen, the graphic screen has the advantage of showing the font font is rich, and can display graphics, compared with the screen, the biggest advantage of the graphic screen is a computer can control multiple screens, and can be offline display.
3. Mix the screen series
Digital screen is the cheapest LED display, widely used in stock exchange stock market display, bank exchange rate, interest rate display, a variety of price list. In most cases, install a screen on the digital screen to display greetings, announcements, advertisements, etc. Support remote control input.
4. Video screen series
This type of display screen pixels and control computer monitor pixel point one-to-one mapping relationship, 256 gray-scale control, so its expressive power is extremely rich, configure the multimedia card, depending on the screen can also play video signals. Depending on the screen open, there is no restrictions on the operating system, the software is not limited, can immediately reflect the computer monitor display.