Classification of LED displays
First of all, let's take a look at the LED display is divided into which categories? What are the characteristics of each?
According to the use of the environment in indoor, outdoor and semi-outdoor
The indoor screen area is generally more than ten square meters below, the point density is higher, in the non-direct sunlight or lighting environment, watching distance in a few meters away, the screen body cannot seal and waterproof. Outdoor screen areas are generally from a few square meters to dozens or even hundreds of square meters, point density is rare (mostly 1000-4000 points per square meter), luminance is 3000-6000cd/ square meter (different orientation, brightness requirements are different), can be used in direct sunlight conditions, viewing distance in dozens of meters, the screen body has good wind resistance and lightning resistance. The semi-outdoor screen is between outdoor and indoor, with high luminous brightness, can be used in direct sunlight outdoor, the screen body has a certain seal, generally under the eaves or in the window.
The color is divided into monochrome, double primary color, three primary color
Monochrome refers to a display that has only one color of luminescent material, usually a single red, but also a chartreuse green for special occasions (such as funeral homes).
The dual primary color screen is generally composed of red and yellow-green luminescent materials.
The three primary color screen is divided into full color (full color), composed of red, yellow-green (wavelength 570nm), blue and nature color (nature color), composed of red, pure green (wavelength 525nm), blue. At present, SONY X4500, Sharp XS1A, and Samsung 9 series use RGB-LED backlight is a three-color LED backlight. Compared with monochrome LED, RGB-LED expands the display range of color gambits through red, green, and blue LED backlight, and controls the screen light leakage at a lower limit to provide rich black expression and effectively reduce energy consumption.