LED display basic constitution

In simplest LED display is by several of the joining together that can be combined unit (unit show board or unit shows up the screen body, plus a proper controller (master control board or control system). So DuoZhong specifications of the show board (or unit case) with different control technology of the controller can be built up many kinds of the LED display, in order to meet different environment, different display requirements need.
Carefully decomposition a LED display, it by the following some elements (with more complex synchronous video screen, for example) :

(1) the metal frame structure
Indoor led screen is general by aluminum alloy (Angle aluminum or aluminum square tube) within a framework, carry show board, etc. Various kinds of circuit board and switching power supply, and the border with dark brown, or aluminum alloy aluminum alloy square tube bag, or stainless steel sheet metal made integration.
Outdoor screen according to screen size and frame body bearing ability is commonly Angle steel or beams constitute the box, can be used for decoration aluminum-plastic plate.

(2) the display unit
Is the main part of the screen, by emitting materials and power circuit to form indoor. led screen is various specifications of the unit show board, outdoor screen is the unit.

(3) scanning control led panel
This circuit board is the function of data buffer, produce all sorts of scanning signals, and occupies emptiescompared to gray control signals.

(4) the switch power supply
Will 220 V ac into various dc to provide various circuit.

(5) twisted-pair cable transmission cable
From the main control instrument display data and all kinds of control signal twisted-pair cable transmission by to screen body.

6 Lord control instrument
Will the digital video signal input RGB buffer, gray transformation, and the organization, and to produce all sorts of control signal.

Special display card and multimedia card behaved
In addition to the basic function of computer display card is also the output signal and line, digital RGB field, such as a signal to vanish main control instrument. Multimedia in addition to the above the function can be the input analog Video signal into a digital signal that Video collection (RGB).

Computer and its peripherals 8)

9) other information source