What are the advantages and disadvantages of LCD screen and OLED screen?

Both are harmful to the eyes. The disadvantage of LCD screen is the advantage of OLED screen.

LCD screens and OLED screens are commonly used as mobile phone screens and are the two most common materials for mobile phone screens now. LCD screens are mainly used in mid- to low-end phones, while OLED screens are mainly used in high-end flagship phones. Mainly, OLED screens surpass LCD screens in various aspects such as color, brightness,corning ces 2024 and thickness. It can be said that the advantages of LCD screens are the disadvantages of OLED screens, and the disadvantages of LCD screens are the advantages of OLED screens.

LCD screens are also called liquid crystal displays. In addition to being used as mobile phone screens, they are also often used on TVs and computer screens. The characteristic is that they do not emit light themselves and need to be illuminated by the underlying white backlight panel. Generally speaking, the LEC screen has a total of 7 layers.

The OLED screen is composed of a group of red, green and blue light-emitting diodes, which can emit light itself. The OLED screen has only three layers, from top to bottom: negative circuit > organic light-emitting diode > anode circuit. The characteristics of the OLED screen are:oled panel manufacturers there is no backlight layer or liquid crystal layer, and each pixel can be turned on and off independently and emit light independently.

Advantages of OLED:

Can display pure black and bright colors: LCD has a fatal flaw, the liquid crystal layer cannot be completely closed. When the LCD displays black, some light will pass through the color layer, so the LCD black is actually a gray mixture of black and white, but The problem is that the liquid crystal molecules cannot really be “completely closed” and some white light will always leak out, so the contrast is slightly weaker. The OLED screen displays purer black, as long as all pixels do not work and emit light. .

No light leakage: LCD has a backlight layer. The backlight of the LCD display easily leaks out from the gap between the screen and the frame, causing light leakage.

Thin and easy to fold: LCD screens have at least 7 layers, while OLED screens only have 3 layers. The advantage of being thin is that it can free up more space for the phone to upgrade and supplement other functions.

Flexible: Also because of the existence of the backlight layer and the liquid crystal layer, the lce screen cannot be greatly bent, so most of the mobile phone curved screens on the market are OLED.

Individual bright spots can be achieved with low power consumption: OLED can illuminate certain areas individually. Like the commonly used screen-stop function now, only the pixels of the screen are glowing for a certain period of time, and the power consumption is low. If the LCD wants to display the time, the backlight panel needs to be fully open, which means that the mobile phone interface must be opened to view it, which consumes a lot of power.

The screen response time is short: it takes time for a pixel to change from color 1 to color 2. This time is called the grayscale response time; if this time is too long, it will cause visual afterimages and affect the visual effect. OLED LED screens, because Each pixel can be controlled independently, so the natural color switching and response time will be faster than that of an LCD screen. Especially when playing games such as racing and parkour, the experience is particularly obvious.

Disadvantages of OLED:

Short life: OLED is an organic material, such as an organic light-emitting diode. The organic light-emitting diode is sandwiched between the positive and negative electrodes. If the power is frequently turned on and off, the life span will be seriously lost. But the LCD screen is different. The backlight plate, liquid crystal layer, and There is the top color filter layer, which is all inorganic and has a significantly longer lifespan.

Screen burn-in: The pixels emit light, causing different pixels on the screen to age differently, and the screen will suffer from partial color distortion. However, as long as the brightness is kept below 60% and the mobile phone does not display one screen for a long time, it can be guaranteed that visible screen burn will occur after three years.

Screen flicker: Under low brightness, there will be a relatively obvious stroboscopic effect (the feeling of a light bulb flickering). Some people will have obvious discomfort and feel uncomfortable in the eyes and dizzy. Screen flickering is very harmful to the eyes and is often criticized by LCD fans. But this does not mean that the LCD screen is not harmful to the eyes. The backlight panel of the LCD screen emits white light. The wavelength of the light emitted is mostly between 420-440. This part of the wavelength range is mostly “blue light”, which can directly reach the retina of the eye. Bottom line, the damage done is irreversible.

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