When you think of display panels, you almost always think of LCD and OLED, a technology that is already quite popular and widely used in a variety of display devices. The latter is only in recent years gradually popular new display technology, also known as the next generation of display technology. In addition, there are QLED, MicroLED has also become the next generation of display technology. Who can challenge LCD?
So what are the differences between OLED, QLED, and MicroLED, and who will be the next generation of display technology? Who can challenge LCD?
OLED screens that burn
OLED, also known as an organic light-emitting diode, refers to the phenomenon that organic semiconductor materials and light-emitting materials are driven by electric fields and lead to luminescence through carrier injection and composite. We won’t go into the details of how OLED compares to traditional LCDs.
The first is the biggest advantage of OLED, spontaneous light. Unlike non-emitting LCDS, which rely on the backlight, self-luminous OLED televisions can be made very thin. LG has even made OLED TVs a stunning 2.57mm thick, with the thickest part no thicker than 5mm. Moreover, because OLED is the spontaneous light of pixels, it can be switched on and off for each pixel and achieve the partition backlight at the pixel level, which theoretically can achieve infinite contrast.
Thanks to their self-luminous nature, OLEDs have a wide range of viewing angles and consume less power than LCD with backlit modules.OLED also has a much better color performance than LCD, with a wider color range.OLED also has a very special feature that can be produced on different flexible substrate materials such as plastic and resin to achieve a soft screen. Curved phones and foldable phones take advantage of this feature.
But OLEDs also have a fatal flaw: organic materials used in OLEDs age faster than inorganic materials used in LCDs, and OLED displays leave a residual image when left standing for a long time, a characteristic of OLED displays. Although there are many technologies that can alleviate screen burning, it still cannot be solved well.
QLED living in the lab
After saying OLED, let’s talk about QLED again.QLED, also known as a quantum dot light-emitting diode, has all the advantages of OLED, such as spontaneous light, low response speed, wide color range, and so on. Of course, the advantage of QLED is that OLED cannot be compared, that is, QLED adopts inorganic quantum dot material, which has a longer life and no screen burning phenomenon compared with OLED organic material.
However, because the quantum dots of QDS are susceptible to heat and water, they cannot adopt the same manufacturing process as OLED, so a new manufacturing process needs to be developed.QLED technology has just started for a short time, and there are constraints such as low reliability and efficiency, unstable component life, and difficult research and development of the solution manufacturing process. Therefore, at present, QLED only exists in the laboratory, and there is still a certain distance from commercial use.
This is some people may ask, Samsung has not launched the QLED TV? In fact, the QLED TV on the market is not QLED in the real sense but can be regarded as an upgraded version of LCD TV. By adding a layer of quantum dot film in front of the backlight of LCD TV, TV has better picture quality and color performance than traditional LCD TV.
Therefore, the QLED TV on the market now is photoluminescence, need to rely on backlight; The real QLED is electroluminescence, which can realize the spontaneous light of pixels.
Expensive micro LEDs
The MicroLED is basically the same as the LED light billboard we see on the road, except that the MicroLED takes each bead to the micron level. Like OLED, micro-LEDs are also pixel-level spontaneous light. They miniaturize traditional inorganic LED arrays, and each LED pixel in the 10-micron size can be individually addressed and lit.
Micro LEDs are brighter and more efficient than existing OLED technology but consume less power. However, MicroLED has a big problem, that is, the manufacturing process is difficult. The most difficult one is “massive transfer technology”, which simply means how to transfer tens of millions of pixel light sources to the substrate.
High production difficulty and low yield lead to the high price of MicroLED. The current price of large-size MicroLED TV is not affordable for ordinary people.
Who is the next generation of display technology
So OLED, QLED, MicroLED is the next generation of display technology? In terms of performance, quads and micro LEDs would certainly beat OLEDs for longer life if they were all pixels that lit spontaneously and did not burn the screen. But when one considers the current state of the art, the picture is different.QLED is still in the laboratory stage, mass production is far away; MicroLED has low yield, high cost, and currently no real civilian products; By contrast, OLED screens are already capable of mass production and are generally more expensive than LCDs, but still in the affordable range.
At this stage, OLED could replace LCD as the next-generation display technology if it can lower its price even further. But in the long run, OLED is also an interim technology, with QLED and MicroLED being the final form. As things stand, THOUGH, LCD has begun to be replaced by OLED in small screens such as mobile phones, but it is still the dominant player in TVs.
For consumers, there is no need to worry too much about which display technology to use. It is cheaper and easier to use. Even if QLED and MicroLED are commercially available, they will not be able to topple the LCD if prices do not fall.
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