What are the functions of LED display?

Abstract: When we go out, we can often see a huge screen outside some buildings, which can play all kinds of advertisements. This screen is an LED display. Is the LED display good? What is the function of LED display screen? Come and have a look with Bian Xiao. LED display LED display What are the functions of LED display?

Introduction of LED display screen

LED (short for lightemittingdiode) is a diode made of gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and indium (In) by controlling the display mode of semiconductor light emitting diodes. When electrons and holes recombine, they can emit visible light, so they can be used to make light-emitting diodes. Used as an indicator light in circuits and instruments, or as a text or digital display. Gallium arsenide phosphorescent diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and indium gallium nitride diodes emit blue light.

LED display screen is generally used to display text, images, videos, video signals and other information.

LED luminescent material

The LED luminescent materials applied to the display screen have the following forms:

(1)LED light-emitting lamp (or single lamp) is generally composed of a single LED chip, a reflective cup, a metal anode and a metal cathode, and is wrapped with an epoxy resin shell with light transmission and light concentration capabilities. One or more individual lamps (different colors) can be used to form a basic pixel, which is mostly used for outdoor display screens due to its high brightness.

(2) (2) The LED dot matrix module consists of several chips and is encapsulated in a plastic shell with epoxy resin. Suitable for row and column scanning drive, easy to form high-density display screen, mostly used for indoor display screen.

(3) SMDLED (SMD LED) is an LED package, which can be used for indoor full-color display screen, and can realize single-point maintenance and effectively overcome mosaic phenomenon.

Is the LED display good?

Let's first understand the advantages of LED display:

1, high brightness: outdoor LED display screen brightness is greater than 8000mcd/m2, which is the only large display terminal that can be used outdoors all day; The brightness of indoor LED display screen is greater than 2000md/m2.

2. Long service life: LED service life exceeds 100000 hours (ten years), which generally refers to the design life, even if the brightness is dim;

3. Wide viewing angle: indoor viewing angle can be greater than 160 degrees, and outdoor viewing angle can be greater than 120 degrees. The viewing angle depends on the shape of the LED.

4, the screen area can be large or small, as small as less than one square meter and as large as hundreds of thousands of square meters;

5. Easy to interface with computers and support rich software.

LED display function

1, which can promote commodities and attract customers.

2. Play the role of store decoration, and improve the enterprise grade.

3, play the role of lighting, unconventional.

4. Play the role of popularizing knowledge. (Can be used to play small information about enterprise products and knowledge of related industries)

5. Play the role of bulletin board. (Promotion, recruitment information release)

6. Play a role in setting off the atmosphere. Through the display screen, you can play the welcome speeches of superior leaders and various VIPs, and the celebration speeches of various major festivals.