What is the difference between TFT LCD screen, OLED screen and Micro LED?

LCD display is a very mature display technology. OLED screens are emerging and used in many mobile phones and TVs. Micro LED is a new generation of display technology that will provide better visual effects.

Micro LED

LCD
Liquid Crystal Display, the liquid crystal display. The LED display refers to a type of liquid crystal display (LCD), that is, a liquid crystal display with LED (light emitting diode) as the backlight source. Here is an explanation of the working principle of TFT LCD.

[Advantage]

  • Low cost and long life: LCD display technology is relatively mature. Compared with OLED, LCD has lower manufacturing difficulty and cost, and has a longer lifespan
  • No stroboscopic: The backlight of the LCD is an independent white LED backlight panel, so basically no flicker can be achieved;
  • High Pixel Density: With the same resolution, the display effect of LCD is clearer than that of OLED.
  • High power consumption: LCD products are thicker and consume more power than OLEDs because LCDs require additional backlights;
  • Low Contrast: LCD cannot turn off the backlight when displaying black, but blocks the light by liquid crystal molecules, so it will appear a gray-white color.

OLED
Organic Light-Emitting Diode (OLED) refers to the phenomenon in which organic semiconductor materials and light-emitting materials are driven by an electric field and lead to light emission through carrier injection and recombination. Under the action of the electric field, the holes generated by the anode and the electrons generated by the cathode will move, injected into the hole transport layer and the electron transport layer, respectively, and migrate to the light-emitting layer. When the two meet in the light-emitting layer, energy excitons are generated, thereby exciting the light-emitting molecules and finally producing visible light.

[Advantage]

  • Each pixel of the OLED screen is self-illuminating, so it is thinner and lighter than LCD;
  • Low power consumption and flexibility: Compared with LCD, OLED saves the structure of backlight, liquid crystal and color filter, lower power consumption, and can realize flexible display;
  • High contrast ratio, high brightness, high luminous efficiency, and more vivid image colors: OLED is self-luminous, so it can be completely non-luminous when necessary, and the display black is more pure;
  • The unit response speed of OLED screen is faster than that of LCD screen.
  • OLED screen burn-in hidden danger;
  • The lifespan of blue OLEDs is relatively short;
  • The stroboscopic phenomenon is obvious, the color is bright and there is a color cast problem, which will cause harm to the eyes when used for a long time;
  • Low pixel density, the same resolution, the display effect is not as good as the LCD display effect.

Micro LED
Micro LED (also known as μLed) refers to a chip with a size less than 100μm. Like ordinary LEDs, it is also self-illuminating. LED chips with three RGB luminous colors are used to form pixels one by one for display.

[Advantage]

  • Compared with LCD and OLED, Micro LED display has fast response speed, high brightness, large viewing angle, good color effect and long life
  • It has the characteristics of self-illumination without backlight, small size, light and thin, and can also achieve the effect of energy saving.

[Difficulties in production technology]

  • Mass transfer technology: How to miniaturize LEDs requires wafer-level technology.
  • Chip technology: For Micro LEDs that retain the substrate, the biggest challenge is cutting. As chip size gets smaller, the split yield also decreases.
  • Driving IC technology: When Micro LED is in use, its power driving current is very low compared to small spacing. Under low current, the low gray-scale state of traditional IC is not good, which will cause Micro LED to have the same current but brightness The difference is large or even some parts are not bright.
  • Inspection and maintenance: Because the size of Micro LED is too small, its electrode size is often smaller than that of the probe needle, so it cannot be inspected by conventional spot inspection technology.
TFT LED OLED MICro led
TFT LED OLED MICro led

Share:

Facebook
Twitter
Pinterest
LinkedIn

What is the difference between TFT LCD screen, OLED screen and Micro LED?

Categories

LED Display Gallery 

Hola LED

What are the benefits of using LED movie screens in theaters?

The LED movie screens and image quality are good, the visual impact is strong, and people feel immersed in the scene. This is the common experience brought to us by movie viewing in the cinema. Up to now, people have regarded projection playback as the main way to watch movies. Laser projection It has also become an important technical symbol of the theater. However, development is the last word. The projection technology, which has been in the dominant position for many years, is now facing a strong enemy, the LED display screen, which has become in jeopardy. In March of

Why don’t cinemas popularize LED movie displays?

Speaking of movie theaters, many people must be familiar with it, because we usually go to see a movie with our family and friends when we are free. But you know what? Movies have a history of more than 100 years, and now with the advancement of technology, people’s movie viewing experience is getting better and better. But you know what? Many cinemas still use early projectors. Many people will ask, with our current science and technology so developed, why not use LED movie displays to replace projectors? Let’s discuss this issue today.The first is the question of size. In

Where do LED transparent displays fit in?

With the development of society, technology has become more and more advanced, especially in the LED display industry. In this development, with the continuous popularization of LED transparent displays in practical applications, transparent screens have become widely known. Although the transparent screen is an application of a new display technology, it still has a place in the market and shows a diversified trend through feedback and continuous improvement of user information. So what is a transparent screen? What is the use? Where is it used? LED transparent screen manufacturers explain! First,How about transparent led screen? The LED transparent screen is

How much is the LED floor tile screen per square meter?

The rise of led floor tile screens has made many people see the dawn of investment, but when we choose a floor tile screen, we must see its quality clearly, and we can only sell it after comparison. So how much does a led floor tile screen cost per square meter? Let’s look down Check it out. LED floor tiles have gradually increased in major scenic spots, shopping malls, entertainment venues, etc. Due to the excellent interactive experience of LED floor tiles, many consumers have been attracted to experience them. This year, LED floor tiles will develop faster. , then