Oled Display Panel.Why are there fewer and fewer phones with LCD screen? Since the iPhone12 series abandoned the LCD screen, it can be said that the LCD screen has been wiped out in the high-end mobile phone market, and no high-end phone is still equipped with LCD screen.

1. The screen display is not as good as the OLED screen (brightness, contrast, color gamut, etc.).

two。. Can not bend and in the chin, frame handling and other aspects not as good as OLED screen, lack of precision.

3. The delay is higher, and the residual shadow problem will be more obvious under the high refresh rate.

4. It doesn’t match some new technologies.

Here there is popular science in vernacular about the luminous mechanism of LCD screen and OLED screen. LCD screen is through the built-in screen back embedded beam LED light beads luminous backplane sends out a white light source without any color information, and then through the color card and then through the control of the mask layer to achieve color display, this principle is like a beam of light through a transparent paper jam with color information and then hit the wall feeling, color saturation will receive a certain loss.

The luminous principle of OLED screen is completely different from that of LCD screen. OLED screen emits light with color information directly through luminous materials, and then forms different color information through the combination of “RGB” three primary colors.

One is to be caught by the human eye through a cover; the other can be directly caught by the human eye, and the difference should be clear to everyone at a glance. The OLED screen is much better than the OLED screen in contrast, saturation, color gamut and maximum brightness.

We in terms of brightness, the current top LCD screen (MINI LED regardless of) the highest brightness is only 650nit, and OLED screen can easily achieve this brightness, the current top E5 level luminous material of the OLED screen of the global maximum brightness has been able to reach more than 900nit, as shown in the following figure, this is the comparison of IPhone11Pro and iPhone11, the gap is clear at a glance.

In addition, there is the difference of independent light control. The luminous point of the OLED screen is equivalent to the parallel relationship, which can be independently controlled on and off, and the pixel level can be controlled at the pixel level. When the black information is displayed, the pixel can be completely closed, thus achieving almost infinite contrast. While the LCD screen can only do large partition backlight, that is, the screen is divided into several large pieces, and when it shows black, it is only covered by a mask layer, so the contrast is naturally not as good as that of the OLED screen.

Behind the LCD screen is a LED bead layer, there is no way to make it flexible, and OLED can. Can be made into a flexible material in addition to curved screen, the control of the frame is also better than LCD screen. At present, the COP process commonly used in the high-end mobile phone market is to flip the IC control period of the screen to the back of the screen through the flexible substrate, thus greatly reducing the width of the chin of the screen.

While the LCD screen does not have this ability, the following picture shows that this is the jaw comparison between the IPhone11 with the OLED screen and the iPhone11Pro. The iPhone11Pro is obviously much better, and the frame of the aircraft carrier is true.

The pursuit of comprehensive screen is currently recognized as one of the major development directions of the mobile phone industry, OLED screen with a higher screen share, naturally has more advantages.

LCD display screen is to control the deflection angle of liquid crystal molecules to achieve different screen display, but because the deflection of liquid crystal molecules takes a certain time, if the screen switching speed is relatively fast, there will be a delay in the deflection speed of liquid crystal molecules, which leads to the phenomenon of visual shadow.

On the other hand, the delay of OLED screen is much lower, which is more suitable for people’s demand for screen quality in the new era.

Whether it is optical fingerprint recognition, ultrasonic fingerprint recognition, or the future evaluation of camera technology all need to rely on the OLED platform, because it is impossible to transmit light on the LCD screen, even if it is able to transmit light will be greatly affected. Take the off-screen fingerprint as an example, its implementation principle is that the user lights up the screen pixels in the identification area at the moment the user puts his finger on the identification area, thus recording the fingerprint information, which requires the screen to support independent light control, which can not be achieved on the LCD screen at present.

It is precisely because of this defect that many new technologies can not be applied on phones equipped with LCD screens, thus affecting the overall performance of mobile phones.