What is the difference between a mobile phone LCD screen and an AMOLED screen? What is MINI LED?

Many people can tell the difference between LCD screen and AMOLED screen, such as what contrast, saturation, maximum brightness, etc., but these are actually external differences, the difference between LCD screen and OLED screen is one-” Can it be fine-tuned to pixel-level light control?”

OLED screen
OLED screen

Why does the saturation of the OLED screen look high? In essence, because of its high contrast ratio, the upper limit of its contrast ratio is almost hundreds of times and thousands of times that of LCD screens. Why? Because the OLED screen directly turns off the pixels in the area when it displays black, it is simply like turning off the lights. The black achieved in this way is serious black. His theoretical contrast ratio is Infinity, the contrast is high, the contrast between light and dark is stronger, and the visual impact is stronger.

The LCD screen does not work, because at this stage, our common LCD screen achieves black by means of masking. In simple terms, it is to wrap a layer of black cloth on the light bulb, and the resulting black is not the most extreme black. , but a dark gray, so its contrast is not that high, basically only a few hundred to one or a few thousand to one.

As shown in the figure below, this is the comparison between an LCD screen and an OLED screen in a real black background. It can be seen that the black of the LCD screen is more of a gray, while the black of the OLED screen is pure black (the lights are all black). Is it not pure if it is turned off?)

LCD screen OLED screen comparison
LCD screen and OLED screen comparison

The reason is actually very simple. The light emitted by the LCD screen is realized by a backlight layer covered with LED lamp beads. The LED lamp beads of the traditional LCD screen are very large, and it is difficult to achieve fine area control. light, so there is no way to achieve high contrast.

Most of the disadvantages of the current LCD screen are directly related to this reason – low contrast, light leakage, high latency, low maximum excitation brightness, and the reason why it cannot be applied to screen fingerprints and off-screen camera phones. It is precisely because of this that LCD screens have almost been completely abandoned in the high-end market.

Although LCD screens also have some advantages that OLED screens do not have, such as no low brightness stroboscopic, higher display fineness at the same resolution, longer life, etc., but these advantages have been with the rapid development of OLED screens. Not so powerful anymore.

However, this does not mean that LCD screens have no future, because the technology of MINI LED screens is gradually maturing.


What is MINI LED? in simple terms, it is to make the lamp beads on the LED lamp bead layer behind the LCD screen as small as possible, usually about 50 microns to 200 microns, which is much smaller than the traditional LCD screen. , so that the pixel-level regional light control close to the OLED screen (just close to) can be achieved. At present, the most well-known product using MINI LED technology on the market is Apple’s new iPad Pro 2021 12.9-inch version, which has 10,000 built-in LEDs. LED lamp beads realize independent light control in 2500 areas.

MINI LED screen
MINI LED screen

To put it simply, the current MINI LED also has the function of directly turning off the light source when displaying a black background, so that a higher contrast can be achieved. I will directly quote Zhong Wenze’s video comparison, you can take a look, the effect is still very obvious. of.


However, the current MINI LED screen cannot be accurate to the pixel point after all, so the problem of flooding will still occur, especially when displaying some images with small areas of highlights, as shown in the figure below, after all, it only It can divide the screen into 2000 areas, which is of course incomparable compared to the pixel-level light control of the OLED screen.

LCD screen
LCD screen

However, with the gradual development of MINI LCD technology, the light control area in the future will become smaller and more precise, and it will only be a matter of time before reaching the level comparable to OLED screens. At that time, LCD screens will return to history. stage.

In addition, another major advantage of OLED screens is that the substrate can be made of flexible materials, which can be shaped into different forms, such as curved screens, folding screens, etc., and the current flexible OLED screen technology is very mature, and the cost of mass production is also high. Very controllable. But that doesn’t mean LCD screens can’t. As shown in the figure below, this is the flexible LCD screen technology demonstrated by CSOT.

However, the current flexible LCD screen technology is still immature, and mass production is extremely difficult. It will take a certain amount of time to popularize it on a large scale.



What is the difference between a mobile phone LCD screen and an AMOLED screen? What is MINI LED?


LED Display Gallery 

Hola LED

What are the benefits of using LED movie screens in theaters?

The LED movie screens and image quality are good, the visual impact is strong, and people feel immersed in the scene. This is the common experience brought to us by movie viewing in the cinema. Up to now, people have regarded projection playback as the main way to watch movies. Laser projection It has also become an important technical symbol of the theater. However, development is the last word. The projection technology, which has been in the dominant position for many years, is now facing a strong enemy, the LED display screen, which has become in jeopardy. In March of

Why don’t cinemas popularize LED movie displays?

Speaking of movie theaters, many people must be familiar with it, because we usually go to see a movie with our family and friends when we are free. But you know what? Movies have a history of more than 100 years, and now with the advancement of technology, people’s movie viewing experience is getting better and better. But you know what? Many cinemas still use early projectors. Many people will ask, with our current science and technology so developed, why not use LED movie displays to replace projectors? Let’s discuss this issue today.The first is the question of size. In

Where do LED transparent displays fit in?

With the development of society, technology has become more and more advanced, especially in the LED display industry. In this development, with the continuous popularization of LED transparent displays in practical applications, transparent screens have become widely known. Although the transparent screen is an application of a new display technology, it still has a place in the market and shows a diversified trend through feedback and continuous improvement of user information. So what is a transparent screen? What is the use? Where is it used? LED transparent screen manufacturers explain! First,How about transparent led screen? The LED transparent screen is

How much is the LED floor tile screen per square meter?

The rise of led floor tile screens has made many people see the dawn of investment, but when we choose a floor tile screen, we must see its quality clearly, and we can only sell it after comparison. So how much does a led floor tile screen cost per square meter? Let’s look down Check it out. LED floor tiles have gradually increased in major scenic spots, shopping malls, entertainment venues, etc. Due to the excellent interactive experience of LED floor tiles, many consumers have been attracted to experience them. This year, LED floor tiles will develop faster. , then