Working principle of LED electronic display screen
Author:Zhang Jing Time:2021-09-11 16:51 Browse(449)
Working principle of LED electronic display
Working principle of LED electronic display screen
we mainly analyze the working principle of LED electronic display screen from three aspects:
(1) LED electronic display screen system

Working principle of LED electronic display screen

this system is composed of computer special equipment, display screen, display screen, display screen and so on Video input port and system software, etc.

computer and special equipment: the computer and special equipment directly determine the function of the system.
different types can be selected according to the different requirements of users.

display screen: the control circuit of the display screen receives the display signal from the computer.
it drives the led to emit light to produce pictures, and increases the power amplifier, the display screen, the display screen, the display screen, the display screen, the display screen, the display screen, the display screen, the display screen and the display screen Voice box output sound.

video input port: provide video input port.
signal source can be VCR, VCR, camera, etc., support NTSC, pal, S_ System software: provide led playback software.
PowerPoint or es98 video playback software.

the system schematic diagram is as follows:

(II) LED electronic display system functions
the system has the following functions:
computer as the processing control center.
the electronic screen corresponds to a certain area of the computer display (VGA) window point by point, The display contents are synchronized in real time, the screen mapping position is adjustable, and the size of the display screen can be easily selected.

the display lattice adopts ultra-high brightness LED (red and green primary colors).
256 gray levels, 65536 color change combinations, rich and realistic colors, and supports VGA 24 bit true color display mode.

it is equipped with graphic information and three-dimensional animation playback software.

the system has the advantages of low cost, low cost, low cost and low costIt can play high-quality graphic information and three-dimensional animation.
there are more than ten ways to display information, such as covering, closing, curtain opening, color alternation, zooming in and out.

special program editing and playing software can be used.
it can edit, add, delete and modify text, graphics, graphics, etc. through keyboard, mouse, scanner and other different input means Images and other information are stored in the hard disk of the control host or server.
the sequence and time of the program play are integrated and alternately played, and can be superimposed on each other.

it can receive the display video recorder, the video recorder, the video recorder and the video recorder Video signals such as DVD players.


Introduction and classification of LED electronic display system

in recent years, the LED electronic display market has developed rapidly.
it has been widely used in banks, posts and telecommunications, taxation, airports, stations, securities markets and other trading markets, hospitals, electric power, customs, stadiums and other fields, which need to be announced and classified


LED is the abbreviation of light emitting diode.
LED display is a display device composed of LED arrays.
it adopts low voltage scanning drive.
it has the following advantages: 1. Low power consumption; 2. Long service life; 3. Low cost; 4. High brightness; 5. Large viewing angle; 6. Long viewing distance; 7 There are many specifications and varieties.



classification of LED display:
according to display color, it can be divided into single red, single green, red and green dual primary color, red, green and blue color
according to use function, it can be divided into graphic display, multimedia video display, quotation display and bar display
according to use environment, it can be divided into indoor display, outdoor display, color display and color display Semi outdoor display
LED display technology features:
A. excellent effect: dynamic scanning technology is adopted.
aThe picture is stable, free of miscellaneous points, the image effect is clear, and the animation effect is vivid and diverse; The video effect is smooth; B. Rich content: it can display text, chart, image, animation and video information; C. Flexible mode: the display mode can be arranged by the user at will; D. Quality assurance: imported luminous materials, high-quality IC chips, noiseless high-power power supply; E. Large amount of information: the information displayed is not limited; F. Easy maintenance: modular design, easy installation and maintenance
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