Display Technology

Explanation of terms commonly used in LED display

Portugal soccer outdoor full color LED display
1, LED brightness light-emitting diode with a luminous intensity of the brightness of the general (Luminous Intensity), the unit is candela cd; 1000ucd (micro candela) = 1 mcd (milli-Candela), 1000mcd = 1 cd. Indoor single LED light intensity is generally 500ucd-50 mcd, and outdoor LED single light intensity should normally be 100 mcd-1000 mcd, 1000 mcd or more. 2, LED modules LED pixels arranged in a matrix or strokes, prefabricated modules into a standard size. Commonly used in indoor display 8 * 8 pixel block, 8 7-segment character module. Outdoor display pixel module has 4 * 4,8 * 8,8 * 16 pixels and other specifications. Outdoor display with pixel module because each pixel LED tubes formed by the two above, it is also known that it is set bundle modules. 3, pixel (Pixel) diameter LED display with pixel can be individually controlled for each of the LED light unit (point) is called pixels (or pixel). Each pixel is the pixel diameter ∮ diameter, unit is mm. For indoor display, usually one for a single LED, form a circle. Indoor display pixel diameter schools are common ∮ 3.0, ∮ 3.75, ∮ 5.0, ∮ 8.0, of which the most ∮ 3.75 and ∮ 5.0. In the outdoor environment, to enhance brightness, increase the line of sight, a pixel cluster contains more than two LED; the LED is generally not more than two cluster is round, so outdoor display with a pixel diameter is generally the average distance between pixels that twenty-two : □ 10, □ 11.5, □ 16, □ 22, □ 25. 4, spacing, pixel density LED display with the information capacity of the center distance between two pixels, or spacing (Dot Pitch); the number of pixels per unit area is called pixel density; unit area contained within the display The number called information capacity. This essence is to describe the same concept three: point pixel pitch is the distance between twenty-two to reflect the pixel density, spacing and pixel density display physical attributes; information capacity is the pixel density of the information carrying capacity the number of units. The smaller the spacing, the higher pixel density, the more information capacity, for closer viewing. Spacing greater pixel density, the lower the information capacity less the farther the distance for viewing. 5, pixel resolution LED display LED display is referred to as the ranks of the resolution. Pixel display resolution is the total, which determines the information capacity of a display. 6, LED display (LED Panel) the LED pixel module assembly arranged in accordance with the actual needs of the size of matrix, together with the dedicated display driver circuit, DC power supply, software, frameworks, and decoration, etc., shall constitute a LED display . 7, light gray pixel intensity is the degree of shading, a color of gray are generally 8-1024. For example, if each of the gray color is 256, for two-color color screen, the display color is 256 × 256 = 64K colors, also known as the screen display to 256 colors. 8, two-color LED display most color today is a two-color color screen, that is, each pixel has two LED die: one for the red die, a die for the green light. Die when the red pixels to red light, green light die when the pixel is green, red and green light when you die while the pixel is yellow. In which red, green as the base color. 9, full-color two-color red, green and blue primary colors together, the three primary colors to form full-color. Constitute a full-color as the blue tube and pure green tube core technology is now mature, it is basically the market with full-color.