Of all the parts in a mobile phone, which part is the most valuable? Many people think it is chip, some people think it is memory or camera, boe 2023 in fact, it is not, the most expensive part of a mobile phone is the screen. Apple began to use OLED screens produced by Samsung in China from the iphone x, and the cost of each screen is about 81 US dollars, which is still in accordance with the preferential price enjoyed by Apple this purchase volume. There are mainly two kinds of mobile phone screen technology, LCD and OLED, so what are the advantages and disadvantages between these two screens?

Liquid crystal display is short for liquid crystal display. LCD requires backlight to display, the principle is based on white light through the color lux light to produce different colors, through the current to control the speed of light of each pixel, thus controlling the color of the pixel. BOE displays After years of development, this technology has been relatively mature, such as TFT, IPS, SLCD on the market are basically LCD screens, but there are different processing methods in technology.

How the LCD screen works

OLED scientific name is "Organic Light-Emitting Diode" (Organic light-emitting Diode). It is an organic self-luminous material that emits light on its own without the need for a separate backlight technology or through a color filter. Each OLED pixel information can be allocated red, green, blue three colors,oled manufacturer and now there are manufacturers to add yellow, but the principle is the same.

OLED can be divided into passive OLED (PMOLED) and active OLED (AMOLED). The OLED screen we're talking about today is basically an AMOLED screen, and AMOLED itself is an OLED. The latest AMOLED technology is almost entirely in Samsung's hands, with South Korea's Samsung and LG accounting for 95% of global production capacity.

How the OLED screen works

Advantages of LCD screen

The biggest advantage of LCD screen compared with OLED screen is low cost; LCD screen imaging effect is more natural, color restoration degree is higher; Finally, LCD screen stroboscopic situation is better than OLED screen, the same resolution LCD display effect is more delicate; LCD screens last longer.

Disadvantages of LCD screen

LCD needs to be illuminated by the backlight time to display, want to achieve a full impact of white light display black, it is a very difficult thing, there will always be more or less some leakage phenomenon.

LCD screen light leakage phenomenon

LCD screen power consumption is higher, especially in the black background and OLED gap is larger, because the backlight is a whole, even if there is only one point of light in the entire black background, the whole backplane light is fully bright, but the black part of the light is blocked.

Because of the existence of the backlight layer and the liquid crystal layer, the LCD is thicker than the organic light-emitting diode, and the thin screen can be a thinner mobile phone, which is in line with the pursuit of modern people's ultra-thin mobile phones.

Some of the latest dark technologies, such as off-screen fingerprint recognition, can only be used on thinner OLED screens because the light emitted by the fingerprint sensor penetrates the screen.

The advantages of OLED screen

Organic light-emitting diode screens can emit no light at all when displaying black, which is extremely pure. In terms of color display, the organic light-emitting diode has the advantage of a wide color gamut and almost infinite contrast, so the display of the organic light-emitting diode screen is brighter and more eye-catching when the LCD and the organic light-emitting diode screen are put together at the same level. In addition, the viewing Angle of the OLED screen is larger than that of the LCD, and the response speed is faster.

LCD and OLED screen comparison

Since OLED pixels work independently, light, dark, extinguish, and LCD display no matter what color backlight, OLED can greatly reduce the number of light screens, so OLED power consumption is lower than LCD. Because of this, the ability to display the time under the breath screen can only be achieved on the OLED screen.

The material of the OLED screen and cable is relatively soft and flexible, and the screen cable and ic chip can be bent behind the screen with the cof or cop process, so that the phone can get the effect of narrow chin. The now popular curved screen is also a unique feature of organic light-emitting diodes.

Since the OLED screen can achieve black technology such as fingerprint recognition under the screen, its self-luminous characteristics can easily identify fingerprints.