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FUll color LED display Frequently Asked Questions(1-10)

led display FAQ

1. What is a LED and a Pixel?

LED is the acronym of Light Emitting Diode and it is a semiconductor that emits visible light when electricity passes through it. The emission of light depends on electrons flowing between anode and cathode and the color of the visual emission (that can be Red, Green, Blue, Amber, and White…) depends on the material utilized.

2. What is the Pitch and Resolution of the LED Display?

The pitch of a LED display defines the distance between the pixels, expressed in millimeters. This fundamental measure determines the characteristics and the performances of a LED maxi screen: the pitch indeed is a defining factor of a screen’s viewing distance.

3. What is the Definition and the 16 Bit Technology?

The “definition” is the number of vertical and horizontal pixels that are on the entire screen. For example, some standard definitions are 96×64 pixels (=low definition); 256×192 pixels (=medium definition): 640×480 pixels (=high definition). The definition is therefore related to the pixel pitch, the distance between the pixels.

4. What is the Virtual Pixel Technology and Contrast Level?

The Virtual Pixel is a technology of image management that allows visualizing pictures of a definition higher than the physical one, thanks to a technique called pixel interpolation? Virtual Pixel technology is able to control every single LED: this particular and exclusive screen management feature allows overlying every single pixel to the next one, creating a so-called Virtual pixel? (A pixel does not exist but is perceptible by the human eye).

5. What are the differences between Indoor and Outdoor Screens/Displays?

From a general point of view the difference between indoor and outdoor screens are the following: #1 – Resolution: as the outdoor screens are usually watched from greater distances, they do not need the highest resolution (from great distance the human eye do not discriminate small details anyways). The cost due to the big dimensions is therefore compensated by the lower resolution needed to provide a good image quality.

6. What is LED display, LED cabinet, LED module, LED pixels

The LED display is the final completed product for advertising or information showing, it was composed by a certain rows and lines of unit LED cabinet; the unit LED cabinet were composed by module certain quantity of led modules, each LED module were composed by 16*16/16*8/8*8/4*4/1*1 LED pixels; each LED pixels were composed by 1R1G1B/ 2R1G1B/ 2R2G1B/ 2R1B/ 2R1G/ 2R/ 1R, etc.

7. What is virtual pixel, real pixel?

Real LED pixel is the physical LED pixel; virtual LED pixel is theoretically 4 times higher than real LED pixel. Actually, the real effect of the virtual pixel is not really 4 times better. It is only a much better, but not really can be 4 times better. When you LED display system is more than 640*480pixels, actually you don’t need to use virtual pixel if you plan to use the whole LED display for one advertising contents, but if you plan to divide a big LED screen into small sections for many advertising contents, the virtual pixel is still very necessary and useful for you to achieve much better effect.

8. What is dot correction, why it is better than the common control system?

Dot correction is a new technology and will be the direction of future LED display industry. The much more improved color consistence & high fresh frequency make it be the only solution for high level advertising need.

9. How to choose the rational product model of the LED display?

Corresponding with the LED display’s best viewing distance, size, application & installation, there will be many optional product models fit for each specific project. ROI & Budget is also very important factors.

10. What is best viewing distance, how to calculate the best viewing distance of the LED display?

Best viewing distance refers to the distance from the LED display, where the people can see a whole and clear picture of the image on the LED display.

There’s 2 ways to calculate the best viewing distance: one is by the pixel pitch, one is by the diagonal. There’s also the reason why there’s different viewing distance for same model LED display, also different viewing distance for same size LED display. .

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