Recently, BOE (BOE) has developed a 5-inch active electroluminescent quantum dot light-emitting display product (AMQLED), which is the national key research and development plan of the Ministry of Science and Technology under the auspices of BOE (BOE). The result. Different from the way LCD backlights use quantum dot materials to expand the color gamut, the product directly uses the inkjet printing process to prepare electroluminescent quantum dot light-emitting devices (QLEDs) for full-color display, with a color gamut of more than 100%.
Quantum dots are tiny semiconductor crystals composed of only a few atoms. The energy-absorbing quantum dot material can be excited to emit light, and light of different colors can be emitted by controlling the size of quantum dots. Based on this feature, quantum dot technology is currently used in quantum dot backlight technology and active quantum dot light emitting diodes (AMQLEDs).
LCD products cannot emit light by themselves, and LEDs are needed as backlights for display. The quantum dot TVs that appeared on the market earlier are LCD TVs that use quantum dot backlight technology. The quantum dot backlight technology replaces the phosphor light-emitting layer in the traditional LED backlight with a quantum dot material to produce an LED backlight with a quantum film, and its display color can be improved by more than 30% compared with the conventional LED-backlit television.
Compared with the quantum dot backlight technology, the active electroluminescent quantum dot illumination display (AMQLED) does not require a backlight, and the injection current can make the quantum dots emit light. The structure of the display device is similar to that of an active organic light emitting diode (AMOLED). In contrast, although the illuminating source is different, AMQLED replaces the illuminating source from organic luminescent material to inorganic quantum dot. However, compared with AMOLED, AMQLED is widely considered to have the potential advantages of long life, wide color gamut and low cost. It is a more subversive display technology after AMOLED, especially in the field of large-size active illuminating display, it will have stronger competitiveness.
At present, the development of quantum dot technology is still in its infancy. According to industry analysts, quantum dots will not only bring subversive improvements to display technology, but also have broad application prospects in the fields of biological sciences and solar cells, and are one of the core technical directions that will change the future of mankind.
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