LED display what are the common terms?

1, LED brightness: general with the brightness of the light emitting diode luminescence Intensity (Luminous Intensity), said the unit's candela CD;1000 the ucd (micro candela) = 1 MCD (candela), 1000 MCD = 1 CD.Indoor use only the LED light intensity is commonly 500 ucd - 50 MCD, and outdoor with single LED light intensity generally should be 100 MCD - 1000 MCD, even more than 1000 MCD.

2, LED pixel module
Leds are arranged in the matrix or pen, prefabricated into the size of a standard module.Commonly used have 8 * 8 pixels indoor LED display module, eight word seven segment digital module.Outdoor LED display pixel module has 4 * 4, 8 * 8, 8 * 16 pixels specifications, etc.Outdoor displays with pixel module because of its each pixel is composed of two or more LED tube bundle, so it is also referred to as control module.

3 (Pixel) and Pixel, pixels in diameter
To each of the LED display can be individually controlled LED lighting units (or points) called pixels (or like).30 pixels diameter refers to the diameter of each pixel, the unit is mm.

For indoor display, generally a for a single LED, for round shape.Diameter school common indoor display pixels have 30, 30, 30, 30, 5.0 5.0 3.75 3.0, etc., of which 30 3.75 and 5.0 up to 30.

In the outdoor environment, in order to improve the brightness, increase visibility, a pixel contains more than two cluster LED;Due to two or more cluster LED is generally not as round, so the outdoor display pixels in diameter with average distance between two pixels said PH10, PH11.5, PH16, PH22, PH25.

4 and the distance between points, the density of pixel and information capacity
LED display the center distance of two pixels, or points of spacing (Dot Pitch);The number of pixels per unit area known as the pixel density;That the number of display content contained in unit area called information capacity.Nature of these three is to describe the same concept: some distance from the distance between two pixels, to reflect the pixel density point spacing and pixel density is display physical properties;Information capacity is the number of pixel density information carrying capacity of the unit.
Point spacing is smaller, the higher pixel density, information capacity, the more suitable for watching the closer the distance.Point spacing, the greater the pixel density is lower, the less information capacity, suitable for watching the farther the distance.

5, resolution
LED display pixel number of columns is called the resolution of the LED display.Amount of pixels resolution is display, it determines the information capacity of a display screen.

6, LED display (LED Panel)
LED pixel module arranged in the matrix size assembled according to actual needs, with a special display driver circuit, dc regulated power supply, software framework, and outside decoration, etc., which constitute a LED display.

7, gray
Gray scale refers to the degree of pixel light emitting light and shade change, a primary gray levels generally have 8 to 1024.For example, if each of the primary colors gray for level 256, with double colors color screen, the display color is 256 x 256 = 256 k color, also known as the screen is 256 color display.

8, double colors
Most of today's color LED display is double colors color screen, namely each pixel are two LED tube core: one for the red light tube core, one for the green light pipe core.Bright red light tube core when the pixel to red, bright green light tube core when the pixel is green, red and green light at the same time, the two tube core pixel is yellow.The red, green called gezer.

9, full color,
Red, green, double colors, combined with the blue color, the three primary colors, make up full color.Due to a full color blue pipe and pure green core technology is now mature, so the basic market with full color.