The lighting principle of LED display screen
Tags: led, display, screen
Published: 2024-05-06 02:01:54

[LED displays](https://www.sostron.com/product?category=2) have become a star in modern display technology due to their high brightness, long life and wide viewing angles. They are not only widely used in outdoor advertising, but also play an important role in daily indoor environments. However, many people may not be familiar with the scientific principles behind LED displays. Below, we will have an in-depth understanding of the light-emitting principle of LED display screens. 

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The history of LED displays can be traced back to 1960, when scientists discovered that semiconductor materials can emit light. An LED display is an electronic display device that uses light-emitting diodes (LEDs) arranged in a specific order. With their excellent display performance, these displays have become the technology of choice for outdoor advertising displays. [Provide you with the technological evolution of LED screens. ](https://sostron.com/service/faq/3274)

Each pixel in the LED display is composed of one or more light-emitting diodes. The core of these light-emitting diodes is a wafer composed of P-type semiconductor and N-type semiconductor. The junction between them is called P-N junction. In certain types of semiconductor materials, when minority carriers (electrons or holes) recombine with majority carriers, excess energy is released, and the light produced in this process is the different colors of light we see.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/d4ucpj82gkkjv6zatgip.png)
The working principle of LED display is based on the injection electroluminescence effect. When the diode of the LED display is in the forward working state, that is, when a forward voltage is applied to both ends, current will flow from the anode to the cathode. During this process, electrons in the semiconductor material will recombine with holes. Depending on the characteristics of the semiconductor material used, this recombination process will produce light of different wavelengths, thereby emitting light of different colors from ultraviolet to infrared. It is worth noting that the intensity of light emitted by the LED display is directly proportional to the size of the current passing through the diode. [LED displays are divided into single-color, dual-color and full-color types. ](https://www.sostron.com/service/faq/3651)

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This light-emitting mechanism of the LED display is not only efficient, but also highly controllable, allowing the LED display to display rich colors and dynamic images. With the continuous advancement of technology, LED displays have significantly improved in brightness, energy efficiency and display effects, further consolidating their leading position in the field of display technology. [What should I do if the LED display screen cannot load images? ](https://www.sostron.com/service/faq/4332)

In general, the luminescence principle of LED display screens is based on the electroluminescence effect of semiconductor materials. By accurately controlling the current, high efficiency and diverse display effects are achieved. With the continuous development of LED technology, we have reason to believe that LED displays will play a more important role in future display technology.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/lyukygk7ef5yfggopp5a.png)
Thank you for watching. I hope we can solve your problems. Sostron is a professional [LED display manufacturer](https://sostron.com/about). We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: [Things to note when purchasing small-pitch LED displays.](https://dev.to/sostrondylan/things-to-note-when-purchasing-small-pitch-led-displays-963) Please click read.

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