QLED is an abbreviation for QuantumDotLightEmittingDiodes, which is a self-illuminating technology that does not require an additional light source. Quantum Dots are tiny semiconductor nanocrystals that are invisible to the naked eye and are particles with a particle size of less than 10 nanometers.
Generally speaking, quantum dots are a combination of zinc, cadmium, selenium and sulfur atoms. In 1983, the scientists of Bell Labs in the United States studied it for the first time, but they "forgot" to give it a name. A few years later, Yale University physicist Mark Reid officially named this semiconductor micro-block as "quantum." Point" and continue to use today.
The structure of QLED is very similar to that of OLED technology. The main difference is that the luminescent center of QLED is composed of Quantumdots. Its structure is that two electrons (Electron) and holes (Hole) converge in the quantum dot layer to form photons (Exciton), and recombine by photons.
Introduction to MicroLEDMicroLED is a new generation display technology that offers higher brightness, better luminous efficiency, and lower power consumption than existing OLED technologies. The outstanding features of microLED will make it available on TV, iPhone, iPad.
Micro-LED displays are expected to grow rapidly in the next five years. It is expected to introduce smartphones and AR/VR applications after 2020, and will reach 330 million units in 2025. In the future, only the potential market size in the display field will be available. It has reached about 30-400 billion US dollars.
MicroLEDs can be deployed in any display application from smallest to largest. In many cases, they will be better than the final combination of LCD and OLED displays. However, current production feasibility and economic costs limit its use. In the future, Micro-LED will be expanded to include wearable/implantable devices, AR/VR/MR, optical communication/optical interconnection, medical detection, smart lights, and space imaging.
Qled and microled difference and contrastQLED is specifically referred to as electroluminescence, and both OLEDs and active OLEDs do not require backlighting. One is based on inorganic materials and the other is based on all organic materials. QLEDs are less expensive to manufacture than OLEDs, and can be used in place of vacuum evaporation required for OLEDs, such as printing and spraying. Color gamut and energy efficiency are also better than OLED. However, this technology will take a long time for material development and equipment development, and it is expected that mass production will be realized in the next five years.
MicroLED is also active illumination. When RGB tri-color LEDs are reduced in size to micrometers, such as 10-40 micrometers, each pixel can be addressed and single-point driven. Due to its high brightness, it is suitable for outdoor wearable display; its nanosecond switching speed is more suitable for AR/VR applications. [Supplement: LCD (including LED backlight) is millisecond, OLED is microsecond, and MicroLED is nanosecond. In close-up viewing of motion pictures or game games, as well as applications such as AR, slow response speed may produce blurred images, which may cause problems such as dizziness of the human eye], while its high brightness, low power consumption, color saturation, High black and white contrast and other advantages, and is suitable for large size display.
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