Please visit our GERMAN LED Display site. Here you will find much more informations in 60 languages!
One can divide LED display principle into three main groups: LED display for small viewer distance, LED display for larger viewer distance and OLED display. Here we can classify between monochromatic displays (one color) usually used by scrolling texts or announcements borders and polychromatic Displays (multi color, e.g. RGB)
Video LED displays for small viewer distance consist of many individual RGB LED (red, green, blue). Each LED is a pixel.
Video LED display for larger viewer distance consists RGB summarized in a "cluster" or of several RGBs plus a white LED. Here the pixels are naturally larger. Since then bright blue LEDS were developed, video LED displays are also daylight suitable. Accessible displays e.g. as a Dancfloor, are getting more and more popular.
LED LCD Displays
works similarly as LCD televisions but instead of the cold cathode emitters, white or colored LEDs are arranged, behind the liquid crystal elements and used for the background lighting. This difference permits a much better contrast and a very flat housing. LED displays can be used with two different techniques. In the case of the Edge display some few LEDs at the sides of the monitor are integrated and light up from there the entire surface. Advantage of it, is the small current consumption and a small housing depth. In the case of the matrix display LEDs are distributed on the entire image plane, which illuminate the picture from the back.
Sharp Corporation has developed a photo-alignment technology called UV2A Technology for LCD panels that can precisely control the alignment of liquid crystal molecules in a simple LCD panel structure.
Sharp will fully incorporate this world-first technology as a core technology for the production of a new type of LCD panel that will significantly evolve LCD TVs to the next generation. More... Sharp
OLED Display:The production of a OLED display is fundamentally different of a liquid crystal screen (LCD). Since OLEDs can be printed on nearly each material, they offer an enormous cost saving in relation to the LCD technology. By the use of flexible substrates (flexible substrates, foils) they open the possibility of manufacturing roll upable screens and of integrating displays into the material of clothing. At present OLEDs usually are used for small displays however Sony brought already 2008 an 27" OLED monitor on the market.
3D Display: Philips Multi-view Lenticular Lens Technology. Philips 3D display technology relies on covering an active matrix display, such as and LCD, with a transparent lenticular sheet. If one was to look closely at the lenticular sheet, one would see continuous vertically aligned waves of partial cylinder shaped lenses. The sheet is fixed so that the image plane of the LCD is at the focal plane of the lenses. If a viewer looks at the display they will see the LCD pixels directly under a lens with one eye and pixels off to one side of the lens centerline with the other eye. This allows a different image to be supplied to each eye which, as discussed, is the basis for producing 3D vision. The repetitions of the lenses across the screen allow entire frames can be projected in different directions in front of the screen. Down on this site is a video shown.
LASER Display:
The new lasers displays are to become twice as "colourful" but half so expensively as the well-known plasma display (up to 90 per cent!!! of the chromatic spectrum, which the human eye can notice). Moreover lasers displays use only 25 per cent of the current consumption of a plasma television, according to the data of the Australian developer company Arasor those transferred the mass production to Mitsubishi and Samsung.
How strong are OLED Displays? Here a good Video of Samsung
The function of an OLED Display
The bigest LED Display in the world. You have to see this!
Samsung LED - LCD Display
OLED Disply
Sony, again the market leader
Sony, 27" OLED Monitor
Laser Display
The new lasers displays are to become twice as "colourful" but half so expensively as the well-known plasma display (up to 90 per cent!!! of the chromatic spectrum, which the human eye can notice). Moreover lasers displays use only 25 per cent of the current consumption of a plasma television, according to the data of the Australian developer company Arasor those transferred the mass production to Mitsubishi and Samsung.
www.LED 
.com
Video LED displays for small viewer distance consist of many individual RGB LED 
