Pixels are used to calculate a unit of digital images, like photographed photos, digital images also have a continuous shades of the tone, if the image magnification several times, you will find these continuous tone is actually a lot of color similar to the small square Point, which is the smallest unit "pixel" of the image, and the smallest graphic unit can display a single dyed spot on the screen.
According to the color principle, know the red R, green G, blue B is called three primary colors. The three colors can be combined to get any color from black to white. LED display classification, a monochrome display, two-color display, full-color display. Monochrome is relatively simple, only need to choose the three primary colors in any one color can be achieved monochrome display. Practical applications, choose more red LED lights. In this case, a red LED is a pixel.
Two-color display and monochrome display much the same, as long as the choice of three colors in any two colors can be achieved two-color. Practical applications, the choice of red and green. When the red and green at the same time bright, you can achieve yellow. Therefore, the two-color display can achieve red, green, yellow 3 colors.
Monochrome display LED lighting is the use of solid semiconductor chip as a luminescent material in the semiconductor carrier generated by the complex release of excess energy caused by photon emission, direct red, yellow, blue, green, blue, purple, white The light.
Full-color LED display because it wants to show a variety of colors, so the need to be able to express the black to white between the different colors. So full-color LED display needs red, green, blue 3 lights together constitute a pixel, in order to show a variety of colors. Full-color LED display, and is divided into real pixel display and virtual pixel display. Both because the display technology used is not the same, so the way the composition of the pixels are not the same.
Virtual pixel display using LED multiplexed virtual pixel technology, adjacent LED LED can be through the upper, lower, left and right combination of four to form an LED; real pixel display is a normal three primary colors constitute a pixel technology. The point of the virtual pixel is scattered, and the point of the real pixel is condensed. Virtual pixels of the luminous point in the lamp, the real pixel of the luminous point on the lamp.
The following together to understand the next LED display pixel technology:
1. Dynamic pixel technology: a pixel is divided into several independent of each other LED unit. Each led unit in a time-division multiplexing way to reproduce a number of adjacent pixels of the corresponding primary color information.
2. Virtual Pixel Technology: In the display system, when the displayed information to a certain direction in a certain way to scroll, the use of human short-term visual effects, between the two adjacent pixels will produce a series of mobile, Physically does not exist in the virtual pixels, thus adjusting each LED single tube to enhance the LED full color display resolution to achieve the best image effect, the theory is to improve the image resolution, usually 4 times.
3. Pixel sharing technology: display a complete independent pixel terminal to time division multiplexing, the signal source in a number of adjacent pixels of the information cycle refresh. It is possible to understand that a plurality of pixels in the signal source share a complete independent pixel of the display terminal in a time division multiplexed manner.