What is a LED?

LED is short for light-emiting diode. LED screens are made from many smaller light emitting diodes placed close together.

Each LED emits three colors – Red, Green and Blue – which together light up as needed to create a range of colors. The colors combine to create an image.

What is a Pixel?

What is pixel pitch?

How are LEDs different from traditional screens?

While traditional LCD screens are typically used inside, LEDs are effective in practically any environment. 

They are designed to remain bright and visible even under direct sunlight and withstand most weather conditions. 

Unlike LCD screens, they are extremely durable and can be used for projects on a much larger scale.

What can LEDs be used for?

Which screen is best for me?

How does the viewing angle affects the image quality?

How does the pixel pitch affect the screen resolution?

How to help the user to select the appropriate display?

(1) to display content

(2) visual distance, the perspective of the confirmation

(3) Screen resolution requirements

(4) installation of environmental requirements

(5) cost control

How are LED displays better than Video Projectors?

Paste the LED outdoor screen can use the table, why?

Not. Demanding outdoor screen installation structure, SMD LED unable to adapt to the harsh outdoor environment.

The outdoor screen brightness higher, SMD LED unable to meet the outdoor screen brightness.

Display can not use the notebook control, why?

Not. The notebook computer's graphics card is built-in, can not be achieved with the control system connection, 

the current BOE have a notebook with a DVI interface, notebook control.

Display's aspect ratio in general?

Why outdoor screen production cycle is long?

(1) procurement of raw materials: the LED lamp procurement cycle is longer, especially imported die, order cycle takes 4-6 weeks;

(2) The production process is complex: subject to the PCB design, production casing, plastic irrigation, adjusting white balance;

(3) strict structural requirements: the general cabinet design, the need to consider the wind, rain, lightning.

Understanding the scan mode of a led wall screen

The scan mode of a LED wall screen can be an important parameter to choose between several tiles. The scan mode has indeed an impact on two parameters of your screen: the light perception and the electric consumption. It must be associated with a third parameter, the refresh rate which, if high, can compensate for a low scan ratio.

There are several modes of scanning: static mode, 1/2 scan, 1/3 scan, 1/4 scan, 1/8 scan, etc.

What is the scan mode can of a led wall screen?

Principle Simplified: Each micro controller has a number of pins and can drive up to the same number of led chips. Each chip manages a led line. The scan mode determines the ratio of the number of lines of led piloted simultaneously to the total number of lines of each module.

Let’s take a concrete example: a module of 144 led divided into 12 lines of 12 led. A controller will control this module according to one of the scan modes.

When the module is off, no LEDs are lit. The controller does nothing.

Static mode: The controller manages all lines at the same time. All led lines are on at the same time

Mode 1/6 scan: the controller manages 1/6 of the module lines at the same time, or here, 2 lines out of the 12. 

When it comes to our screens, all the lines should be lit.

When one looks at the screen with the naked eye it is actually the impression that emerges. But in reality this impression is due to our retinal persistence because only 2 lines out of the 12 are lit simultaneously. However, the refresh rate of a screen is always higher than the capacity (speed) of perception of our eye.

If the sweep rate was reduced enough, we would not see the module turned on but we would see scrolling separately the lines as in this animation .

1/4 scan mode: the controller manages 1/4 of the module lines at the same time, ie 3 lines out of 12.

Mode 1/2 scan: the controller manages half the lines of the module at the same time, ie 6 lines out of the 12.

What is the difference between the indoor module full color and full color of the patch?

(1) light-emitting part: module full color display module is generally green and yellow, pure green module expensive; SMD full color generally use pure green core.

(2) display: Module full color pixel visual feeling of thick, low brightness, easy mosaic phenomenon; SMD full color consistency is better, higher brightness.

(3) Maintenance: module difficult to maintain full-color, high replacement costs of the entire module; SMD full color and easy to maintain, repair and replacement of a single lamp.

Why use a DVI display interface standard?

(1) DVI display card interface is in line with the computer display interface of the international standards;

(2) without opening the chassis, to facilitate the installation;

(3) memory, dynamic screen display capabilities;

(4) hardware and software compatibility;

(5) to support all operating systems and application software, display flexibility and convenience;

(6) mass production, low cost, easy to maintain.

What is LED display of the IP protection grade?

IP protection grade is composed of two digital, the first digital representation from the dust of lamps and lanterns, the level of the external things out,
the second digit said moisture proof.