The difference between mobile phone LCD and OLED screen

- Nov 19, 2020-

With the continuous development of science and technology, the software and hardware technologies of mobile phones are also constantly innovating. As the screen is one of the most important components of a smart phone, the quality of the screen is particularly important.


The mobile phone screens currently on the market are mainly divided into LCD and OLED, and the TFT, IPS, AMOLED, PMOLED and other screens promoted by mobile phone manufacturers are based on the enhancement technology of these two materials. So, what is the difference between these two screens, or which one is better? Let's take a look at it with the editor below.


1. Different lighting principles


The light-emitting principle of the LCD screen is that a liquid crystal layer is sandwiched between two pieces of "glass", a thin film transistor is placed on the lower substrate, and the upper substrate has a color filter layer. The middle liquid crystal layer will produce different light characteristics under the action of voltage , In the final projection, it passes through the color filter layer to produce different colors. The OLED (Light Emitting Diode) has the characteristics of self-luminescence, with a very thin organic material coating. When current passes through, these light-emitting diodes can emit light alone.


Two, different screen characteristics


From the perspective of color performance, the look and feel of OLED tends to be more intense, while the display effect of LCD tends to be more realistic. In terms of materials, LCD screens are inorganic materials, and OLEDs are organic materials. The difference in materials between the two also determines the difference in screen life. Because OLED needs each pixel to emit light by itself, and different color pixels have different light-emitting lifetimes due to different materials, and the blue pixel has the shortest lifetime. Therefore, theoretically, the life span of OLED screens is relatively short.


Three, their respective advantages and disadvantages


OLED screen


Advantages: supports fingerprint recognition under the screen, OLED is more power-saving under the same conditions, the color display is more brilliant, supports the screen display, transparent, thin and flexible


Disadvantages: PWM dimming is more eye-catching, has burn-in phenomenon, the technology is not mature enough, so the cost is higher, and the graininess is heavier. 1080P resolution is not clear enough


LCD screen

https://www.bbilcd.com/tft-lcd-display-module/2-8-inch-tft-screen-rohs-display-module-lcd.html

Advantages: high brightness (sunshine screen), more solid and non-breakable screen, mature screen technology, lower cost, high color reproduction, and no color cast after long-term use


Disadvantages: high power consumption (large power consumption), does not support fingerprints under the screen, and the technology is not advanced enough


Four, summary


There is no absolute criterion for judging which is better between the two. After all, they each have their own advantages, disadvantages and characteristics. However, the current mainstream flagship mobile phones use OLED screens, because the characteristics of OLED are more in line with the current development of smart phone functionality. Of course, this does not mean that LCD does not have a good screen. After all, high-quality LCD screens are better than many OLED screens. (For example, Apple) Finally, it is up to consumers and the market to judge who is better for these two screens!