Recently, BOE (BOE) has developed a 5-inch active quantum dot display (AMQLED), which is a key research project funded by BOE (BOE) under the Ministry of Science and Technology, "Research on Quantum Dot Light-emitting Display Key Materials and Devices" The result. Different from LCD backlighting using quantum dot material to expand the color gamut, the product directly uses an inkjet printing process to fabricate an electroluminescent quantum dot light emitting device (QLED) for full color display with a color gamut exceeding 100%.

 

Quantum dots are very small semiconductor crystals composed of only a few atoms. The quantum dot material after energy absorption can be excited to emit light, and light of different colors can be emitted by controlling the size of the quantum dots. Based on this feature, the current quantum dot technology is mainly used in quantum dot backlight technology and active quantum dot light-emitting diode (AMQLED).

 

LCD products can not be their own light, LED and other needs as a backlight to achieve display, the earlier appeared on the market quantum dot TV, is the use of quantum dot backlight LCD TV technology. Quantum dot backlight technology is based on the quantum dot material instead of the traditional LED backlight phosphor light-emitting layer, made of LED backlight with quantum film, the display color than the traditional LED backlight TV can be improved by more than 30%.

 

Compared with the quantum dot backlight technology, the active quantum dot display (AMQLED) does not require a backlight, and the current can be injected to 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, AMQLED has replaced light sources from organic light-emitting materials to inorganic quantum dots, albeit at different light-emitting sources, but AMQLED is generally considered to have the potential advantages of long lifetime, wide color gamut and low cost compared to AMOLED, Is more subversive display technology after AMOLED, especially in the field of large-size active light-emitting display, there will be more competitive.

 

At present, the development of quantum dot technology is still in its infancy. According to the analysis of the insiders, quantum dots will not only bring disruptive improvement to the 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 for changing the future of mankind.