Moreover, since the backlight layer is always in an open state, it is very likely that the white light emitted from the backlight layer will leak out from some small gaps, which is the so-called light leakage phenomenon.

There is also the thickness issue. The disadvantages and advantages are relatively common. Without comparison, there is no advantage or disadvantage. Because the LCD screen needs a backlight layer and a liquid crystal layer, its screen thickness is thicker than the OLED screen.

The current trend is to pursue thinness and lightness, which is exactly the opposite of what is currently popular.

The third disadvantage is that the backlight layer is always on, which consumes power, resulting in a shorter battery working time.

The fourth disadvantage is that the LCD screen is called a hard screen, and cannot be made into a foldable mobile phone, and it has poor flexibility.

The fifth disadvantage is that the LCD screen does not support under-screen fingerprint unlocking.

Here we can briefly talk about the principle of under-screen fingerprint unlocking. Under-screen fingerprint unlocking means that when a finger presses the fingerprint unlocking area, the optical fingerprint unlocking group will emit a beam. This beam will form a reflection when it finds the fingerprint through the transmissive layer of the screen. The optical fingerprint unlocking group calculates and analyzes the reflected beam and compares it with the fingerprints input into the phone.

The data will be unlocked!

The light beam here needs to shuttle back and forth through the translucent layer of the screen, which requires that the thinner the screen, the better, and the thinner the light, the better the translucent. Therefore, the upper and lower screen fingerprint unlocking on the market are now used for oled screens.

The sixth disadvantage is that the LCD screen cannot support the screen-off display.

Generally speaking, if we want to view the time on our mobile phone, we will light up the screen first, and the screen-off display means that we can view the time by taking it out without lighting the screen of our mobile phone, which is more convenient for people to live.

The reason why the LCD screen cannot be displayed on the screen is because the LCD screen will not shine on its own. With the backlight layer, the entire screen can only shine as a whole, and the screen-out display requires light.

Olyd screens also have their own shortcomings.

The first disadvantage is that the screen burning phenomenon occurs. We have already said that the oled screen is composed of countless small bulbs of three primary colors. Each small bulb is independent. When forming an image, there will definitely be a phenomenon that some small bulbs are used at a high frequency, and some small bulbs are used at a low frequency.

Just like the twenty-six letters in English, some letters are used more often in the English words, while others are used less often in the English words.

The lifespan of small bulbs that are used more often is definitely shorter than that of small bulbs that are used less often. This leads to the different aging of many small bulbs, which will lead to the so-called burning of screens.

However, the screen burning phenomenon occurs very few times, which is not the biggest disadvantage for the oled screen. The biggest disadvantage is the splash screen!

The lcd screen adjusts the brightness of the screen by the voltage level, while the oled screen adjusts the brightness of the screen by constantly turning on and off those small bulbs with three primary colors.

It may be difficult to understand, so let's give an example.

For example, if we adjust the brightness of the oled screen to 100%, then the small light bulb will remain on within a unit time.

If we adjust the brightness of the oled screen to 90%, then the small light bulb is in a lit state for 90% of the unit time, and the remaining 10% is in a quiescent state.

By the same token, if we adjust the brightness of the oled screen to 20%, then within a unit time, the countless small bulbs are in the open state, and the remaining 80% of the time is in the closed state.

In other words, the brightness of the small light bulb is actually unchanged. The reason why we see the screen dimming with the naked eye is that the small light bulb keeps turning on and off for a period of time.

When the speed is fast enough, our naked eyes can't tell that these small light bulbs are constantly turning on and off.

By controlling the time when the small light bulb is on and off, the brightness of the screen is controlled.

The lower the brightness of the screen, the lower the number of strobes. If our human eyes are watching the strobe screen for a long time, it is easy to cause discomfort and fatigue in the eyes.

Therefore, if you buy a mobile phone, you must pay attention to this problem if it is an oled screen. You cannot play with your mobile phone with low screen brightness for a long time.

Some friends like to lower the brightness of the screen while turning off the lights, which can easily lead to eye fatigue. It is best to turn on the lights and play with the phone...

Of course, whether it is an LCD screen or an OLED screen, it must have advantages.

The first advantage of lcd screen is its low cost. After all, lcd screens have been used for decades, the technology has been very mature, and the manufacturing difficulty is relatively low.

The second advantage is that there will be no strobe, which is caused by different working principles;

The third advantage is that the LCD screen comes with a luminous panel, so its life span is relatively high.

Also, the pixel density of the LCD screen is high, which leads to the sharpness of the LCD screen appearing higher under the same resolution.

The advantage of the oled screen is that it can appear pure black, with simple structure, making the screen thinner and more flexible, and supports the production of curved screens, low power consumption, longer standby time under the same power, supports separate lighting, supports under-screen fingerprint unlocking, and short response time.

The images on the screen are composed of pixels, and the pixel colors are composed of three colors: red, blue and green, in different proportions. The time required for pixels to combine the required colors is the response time.

If the response time is long, the shadow will appear. From the working principle, the lcd screen must have a long response time of the oled screen, and the oled screen has almost no delay.

It can be said that both the oled screen and the lcd screen have their own advantages and disadvantages, which means that they exist. However, in mobile phone business, the oled screen is widely used in mid-to-high-end mobile phones, while the lcd screen is more commonly used in mid-to-low-end mobile phones.

But the current trend is that oled screens are gradually replacing lcd screens.

Of course, this is only on mobile phones, and the majority of people use LCD screens on TVs and computer screens.

Wang Haotian is not going to interfere with the LCD screen. Firstly, this technology is quite mature and can be said to be a big deal. Secondly, according to Wang Haotian's prediction, the oled screen will be mainstream.

It was like Apple phones replaced Lokia phones back then.

Developing an oled screen is the top priority.

It can be said without hesitation that at the beginning of the chip, we were stuck in our necks. Fortunately, the Palace of Wisdom stood up and turned the world around, but on the screen we were also stuck in our necks.

The Japanese pirates were stuck in their necks.
Chapter completed!