With the rapid development of LED display technology, LED display products are showing diversified development. Today’s LED display screens are widely used in various industries. However, for beginners, many technical terms of LED display are used. I don’t know, so what are the common technical terms for LED displays?
LED brightness: The brightness of a light-emitting diode is generally expressed by Luminous Intensity in units of Candela cd; 1000ucd (micro-candela) = 1 mcd (mound candela), 1000mcd = 1 cd. The light intensity of a single LED for indoor use is generally 500ucd-50 mcd, while the light intensity of a single LED for outdoor use should generally be 100 mcd-1000 mcd or even 1000 mcd or more.
LED pixel module: The LEDs are arranged in a matrix or a pen segment, and are prefabricated into standard size modules. The indoor display commonly used 8*8 pixel module, 8 word 7-segment digital module. The outdoor display pixel module has specifications such as 4*4, 8*8, 8*16 pixels. The pixel module for the outdoor display screen is also referred to as a header bundle module because each pixel is composed of two or more LED tube bundles.
Pixel and Pixel Diameter: Each LED light-emitting unit (dot) that can be individually controlled in an LED display is called a pixel (or pixel). The pixel diameter ∮ refers to the diameter of each pixel in millimeters.
Resolution: The number of rows and columns of LED display pixels is called the resolution of the LED display. The resolution is the total number of pixels in the display, which determines the information capacity of a display.
Gray scale: Gray scale refers to the degree to which the brightness of a pixel changes. The gray scale of a primary color generally has 8 to 12 levels. For example, if the gray level of each primary color is 256 levels, for a dual primary color color screen, the display color is 256×256=64K color, which is also referred to as a 256 color display screen.
Dual primary colors: Most color LED displays today are dual primary color screens, that is, each pixel has two LED dies: one for the red die and one for the green die. The pixel is red when the red die is lit, the green is green when the green die is lit, and the pixel is yellow when the red and green dies are simultaneously lit. Among them, red and green are called primary colors.
Full color: red and green double primary color plus blue primary color, the three primary colors constitute full color. Since the technology for forming full-color blue tubes and pure green dies is now mature, the market is basically full-color.
SMT and SMD: SMT is the surface mount technology (short for Surface Mounted Technology), which is currently the most popular technology and process in the electronics assembly industry; SMD is a surface mount device (short for Surface mounted device)
Post time: May-04-2020