How much do you know about LCD and OLED screens, the predecessors and younger generations of the panel?

With the continuous development of technology, consumers’ demand for screens has also changed. From the TV screen to the mobile phone screen, in addition to improving the performance of digital home appliances, manufacturers also packaged on the screen to allow consumers to feel the change of product changes.

The picture comes from the screenshot of e -commerce products

In daily life, the most intuitive exposure to screen users is TV sets and mobile phones, whether it is a full screen (mostly LCD panel), curved screen (OLED panel), or folding screen (OLED panel). Consumers are interested in the screen. At the same time, I don’t know the screen itself. So, what is the difference between OLED screen and LCD screen? What are the differences between mobile phones and televisions made by them? Below, I will come to solve your confusion.


The difference between LCD screen and OLED screen

At present, in Tablet TV and smartphone technology camps, LCD and OLED are relatively common display technologies in the market. Each display technology occupies a certain market share in their market. Before understanding the difference between LCD and OLED, let’s take a look at their own basic principles.


1. LCD display principle


The appearance principle of the LCD is to place the liquid crystal between two pieces of conductive glass. With the driver of the two electrode electric fields, the electric field effect of the LCD molecule is distorted to control the light source transmission or cover function. The image is generated and the image is displayed. If the color filter is added, the color image can be displayed.

The picture comes from Weibo screenshots

2. OLED display principle


OLED is an organic luminous diode display, which is composed of a luminous material layer and embedded between two electrodes. During the input voltage, the carrier movement is mobilized, passing through the organic layer, until the electronic cave and re -combining to achieve energy conservation and release excess energy in the form of light pulse. At this time, one of the electrodes is transparent and you can see the light emitted. It is usually composed of tin oxides (ITO).

OLED can be divided into PMOLED (passive drive) and amoLED (active driver).

AMOLED is derived from Samsung. Each pixel is equipped with TFT (thin film transistor) with switching and switch. Its driving method is easier to achieve high brightness, high resolution, high color performance, and low energy consumption. This type of panel is widely used in consumer electronics.

PMOLED is derived from LG. Its simple structure and easy process can effectively reduce manufacturing costs and very fast response speed. It has great development potential in displaying simple miniature equipment. However, PMOLED will have the problem of large power consumption and reduced life. The product size is limited to about 5 inches.

At present, most of the mainstream OLED screens on the market are AMOLED technology.

3. What is the difference between LCD screen and OLED screen

LCD and OLED screens have their own advantages and deficiencies. The difference between them is mainly manifested in the following seven aspects;

OLED is faster than LCD response speed

Ordinary LCD TVs will have a delay (residual shadow). This is because the speed of response cannot keep up. When watching sports events or playing games, the screen will be significantly different. Generally, the response time of LCD is 10ms, and OLED can achieve 0.001ms. Whether it is using OLED TV or watching movies, there will be no residual movies. It can also better synchronize sound and paintings. Consumers watch movies to watch movies Or experience better when playing games.


OLED has a higher contrast than LCD

The LCD layer cannot be completely closed. When the LCD panel is displayed black, some light will pass through the color layer. The black that users see through the LCD screen are actually white and black mixed gray, just like the white -light flashlight to the black film. The black you see from the film is actually the gray with a sharp decrease in brightness, not pure black, not pure black Essence And OLED is different. OLED screen has higher contrast. When it shows black, you can directly turn off the pixels in the black area to achieve almost pure black effects.

LCD has the problem of light leakage, OLED doesn’t

The biggest problem with the LCD panel screen is the problem of light leakage, which is caused by the use of the backlight unit light. OLED is a self -optical characteristic. It is an independent light source for each pixel. Which pixels need to be lit. Which pixels are limited to, so the OLED screen has almost no light leakage.

OLED is wider than LCD visual angle

OLED screen has a wider viewing angle than the LCD screen. Take the TV as an example. Whether you sit there to watch OLED TVs, the experience of watching the TV is the same, and LCD TV, sometimes sitting on the side watching will affect the movie viewing effect.

OLED is thinner but shorter than LCD

The LCD screen is thicker than the OLED screen due to the existence of the backlight layer and the LCD layer. In addition, due to the characteristics of OLED “light” and “thin”, the curved screen is possible. Because OLED is an organic material, its aging speed is much faster than the LCD, and the screen will occur, and the life span will be shorter.

The picture comes from Weibo video screenshot

The author has consulted in the industry and learned that OLE has a disabled or burning screen due to insufficient blue life. Due to the blue attenuation, OLED TV white screen changes can be changed. After consumers buy OLED TVs, they will also find that white pictures will become more and more yellowish compared to white pictures every month, because its blue light is getting weaker and weaker.

OLED is more expensive than LCD products

At present, LCD has developed very mature, and product manufacturing costs have been reduced year by year. OLED display technology also belongs to the middle stage of development. The process is complex, the manufacturing is still climbing, and the product manufacturing cost is high. When I discussed the OLED screen with the industry, the author learned that OLED costs at least twice as expensive than the LCD panel manufacturing. At present, LCD panels have been popular on display devices, and most of the OLED screens are used on products such as high -end TV or flagship mobile phones, and the price is much more expensive than LCD products.

Who is more eye protection on OLED and LCD screen?

OLED and LCD screens can be used on mobile phones, televisions, notebooks and monitors and other devices. For consumers, who protects these two panels? For the convenience of users, the author takes the blue light and flash screen as an example to see who protects the eyes.

Blue light

In fact,

Whether it is the LCD screen or the OLED screen, blue light will be emitted.

Because the OLED screen is self -emitted, the damage to the eyes in dark light is greater, and the display effect of LCD in darkness is better, and the damage to the eyes will be relatively small.

Flash screen problem

Flight, because it is because of

OLED often uses PWM lighting to light up the light sources of the screen. Although the human eyes are not detected, under the slow movement, its screen is flashing at a fixed frequency. The low frequency is particularly harmful.

Essence Flash screens will have a clear sense of stimulation on the eyes of users, and the OLED screen is high. For the “OLED mobile phone users” (OLED mobile phone users), the impact of OLED screens on vision is very great.


Earlier, the LCD displayed hardware also had obvious flash screen phenomena. Under the influence of relevant policy guidance and consumer needs, manufacturers began to promote “no flash screens”. For medium -weight mobile phones and TV users, the frequency flash of OLED will cause severe visual fatigue due to users who use OLED display hardware, and even cause migraine.

Therefore, the LCD screen is more eye -catching than the OLED screen.

What is the difference between LCD and OLED products?

In the display device, what screen is directly affected by people’s perception and experience. Whether it is on large screens, such as color TVs, smart tablets, or small screens, such as mobile phones, most of them are mainly LCD screens (LCDs). Nowadays, with the development of OLED screen technology, some high -end TV and flagship phones are equipped with an OLED screen, so is the difference between LCD and OLED screen products?

1. Who is better for LCD TV and OLED TV?

The LCD screen and OLED screen are used on the TV, and there are obvious differences in three aspects.

The author feels that the relationship between them is like the sun (OLED self -emitting) and the moon (LCD needs backlight board as auxiliary light sources).

First of all, they are different display techniques, and there are essential differences in the principle of luminous light

(It will not be repeated, the previous content is described).

Secondly, the appearance and shape are different. The structure of the liquid crystal panel is relatively complicated, and it is difficult to achieve extremely thin in thickness. OLED does not require a backlight, the structure is simpler and the body can be extremely ultra -thin

It can even make a TV -like TV. OLED’s flexible bending characteristics can be made into curved screens such as curved screens, and the appearance is more plastic.

Third, the color of OLED is closer to the real world, especially the black scenes performed well.

When it shows the black scene, it is enough to turn off the pixels. It is a real pure black. But LCD can’t do it. Almost all LCD TVs will have light leakage when displaying black scenes.

The color gamut coverage of OLED is relatively high. NTSC is generally about 95%, which can provide nearly perfect natural colors.

Its permeable angle can reach 178 ° and the picture is not disturbed. No matter from any angle, you can enjoy outstanding pictures. It can directly control the light and dark changes of pixels, without the need to deflect the LCD molecules like LCD, and perform well on high -speed dynamic pictures.

In the field of TV, although the OLED screen has a large advantage, it is subject to the rate of good products. It can successfully mass production in 55-65 inches, and the price is high. LCD TVs can make larger TVs due to their relatively mature technological development

The price is not expensive. We see that there are many LCD TVs on the market, from 32 inches to 120 inches, or even larger size, but OLED TVs are mostly 55 inches.

2. Who is suitable for LCD mobile phones and OLED mobile phones?

Since the development of mobile phone products, it has become the fastest consumer electronics product.

On the mobile phone question, buy LCD or an OLED phone? You may find the answer through the screen quality, service life and power consumption of consumers.

First, the OLED screen is better in contrast and black.

The contrast refers to the ratio of white than black. The higher the contrast, the stronger the color. Because the LCD has a backlight, it shows that black is not pure black. OLED black does not glow. Essence

Secondly, LCD has an advantage in the service life of consumers.

Why do you say that? Look at the problem of burning screens and flash screens, and you understand. Maybe you will say that it is 2021 now, and OLED phones will not happen, right? But in fact, from the news exposed by domestic and foreign media, the phenomenon of mobile phone screen burning still exists, but it is just that technology is improving, and the chance of burning the screen has also decreased significantly.

For example, changing the screen pixel arrangement can effectively increase the service life of the OLED screen, but the problem is that the display effect of the screen will decrease. In contrast, the LCD screen mobile phone has no these problems at all, not only long life, but also more eye protection.

Flash screen problem, LCD has an advantage,

It changes the power size by changing the current/voltage, thereby reaching the change of the screen brightness of the mobile phone. This adjustment method is DC DC lightning. OLED uses PWM lighting. Compared with DC DC dimming, PWM lighting is the form of AC power, and the brightness of the screen is adjusted and power -off. Due to the frequent flash, the person’s eyes cannot capture the process of this interest screen, but you can see it intuitively with your mobile phone video.


Third, on the issue of power consumption, because the pixels work independently, OLED saves power than LCD.

The LCD opening is that the entire backlight layer is all opened, it is either open or full. Each pixel point of OLED is independent, and can light up some pixels alone, so that the breath screen can be achieved, which can greatly reduce the number of times of lighting the screen.

In the field of mobile phones, OLED screens are widely used. The screen fingerprints, screen cameras, and folding mobile phones use OLED screens, but there are also many mobile phone brands using LCD screens. It has its own positioning and development plan.

At the end

At present, the LCD screen is still the mainstream of the market. OLED screens have limited the penetration of OLED TVs, OLED mobile phones and other products due to high cost, fast aging, low yield, etc.

The following is the difference between the difference between LCD and OLED;

1. LCD inorganic materials, OLED organic materials, so OLED life is not as good as LCD

2. OLED is an organic material, and the pixels work independently, and the screen will occur (the essence of the screen burning is that the screen is aging and uneven)

3. OLED’s color is much better than LCD, OLED black is purer, LCD black is dark gray

4. There is almost no pear -shaped OLED screen, and the response speed is fast

5. OLED screen adopts PWM lighting, watching at low brightness, and frequent flashing will make the light sensitive people feel uncomfortable

6. OLED saves power, thinner, and thinner than the LCD screen. It can also bend significantly

LCD has its own advantages on the OLED screen. In the choice of hardware, it is not difficult to make a decision. If you are sensitive to light, the requirements for pure black color are not very high, the budget is limited, the LCD screen hardware is more suitable for you, it is better to wait for OLED technology to mature and start. If you are not sensitive to light, pursue product fashion and artistic sense, there is no economic pressure, and you want to try high -tech high -tech, then OLED screen hardware can meet your needs.

The picture comes from Weibo screenshots

The picture comes from Weibo screenshots

Author: ArticleManager