OLED, also known as electromechanical laser display or organic luminescent semiconductor. OLED belongs to a type of current type organic light emitting device, which emits light through the injection and recombination of charge carriers. The emission intensity is proportional to the injected current.

Under the action of an electric field, the holes generated by the anode and the electrons generated by the cathode in OLED will move, injecting them into the hole transport layer and electron transport layer respectively, and migrating to the luminescent layer. When the two meet in the luminescent layer, energy excitons are generated, which excite the luminescent molecules and ultimately produce visible light.

Due to its excellent characteristics such as self illumination, no need for backlight, high contrast, thin thickness, wide viewing angle, fast reaction speed, applicability to flexible panels, wide temperature range, and simple construction and manufacturing process, it is considered as the emerging application technology of the next generation of flat panel displays

OLED display technology is different from traditional LCD display methods in that it does not require backlighting and uses very thin organic material coatings and glass substrates. When current passes through, these organic materials will emit light.

Moreover, the Oled display screen can be made lighter and thinner, with a larger viewing angle, and can significantly save electricity. In short: OLED combines all the advantages of LCD and LED, and is even more excellent, while discarding most of their shortcomings.

OLED display technology has been widely applied in the fields of smartphones and tablet TVs. Due to technological and cost limitations, it is rarely used in industrial grade splicing large screens.

In recent years, with the continuous improvement of market trends and user demand for display, there will be more and more applications of Oled display screens in the future.

Differences between OLED LCD screens, LED displays, and LCD LCD screens

After understanding their working principles, I believe everyone has a general understanding of OLED liquid crystal screens, LED liquid crystal screens, and LCD liquid crystal screens. Below, I will focus on introducing the differences between the three.

Firstly, on the color gamut:

OLED LCD screens can display an endless range of colors without being affected by backlights. Pixels have an advantage in displaying completely black images. Currently, the color gamut of LCD screens is between 72% and 92%, while that of LED LCD screens is above 118%.

Secondly, in terms of price:

LED LCD screens of the same size are more than twice as expensive as LCD screens, while OLED LCD screens are even more expensive.

Thirdly, in terms of technological maturity:

Because LCD liquid crystal screens are traditional displays, they are much better in terms of technological maturity than OLED and LED liquid crystal screens. For example, the display reaction speed is much faster, and OLED and LED liquid crystal screens are far inferior to LCD liquid crystal displays.

Fourthly, in terms of display angle:

OLED LCD screens are much better than LED and LCD screens, specifically due to the very small viewing angle of the LCD screen, while LED LCD screens have unsatisfactory layering and dynamic performance. In addition, the depth of the LED LCD screen image is not good enough.

Fifth, the effect of splicing:

LED displays can be assembled from small modules to form seamless large screens, while LCDs have small edges around them, resulting in small gaps in the assembled large screen.

So, they each have their own differences and play different pivotal roles in different application fields. For users, they may choose different products based on their own budget and usage, which I strongly agree with because the product that suits them is the best product.