As we all know, as a representative of a large size display of high brightness, LED display screen has almost outdoor display status of the king, usually defined as installed in the building facades, large column at the top of display products. The past two years small pitch LED display technology is widely used and recognized, industry analysts believe that digital signage advertising machine application or battlefield will be the best small pitch LED display. As the market continues to expand and upgrade the LED, for LED display technology requirements are also increasing, the market competition is fierce but also to LED technology as reflected in the competitiveness of enterprises.

Recently, news that the Korean team replaced by a two-stage method of forming a new structure to create a new LED display element driving stability and luminous efficiency is improved by more than 3 times, which marks the ED high brightness, low power consumption The display lighting system a step forward.

Display industry, the semiconductor industry and called Korea the two industries as the main medium to convey the image, the importance of the display is self-evident, and low power consumption, light weight, high quality and flexibility and other performance indicators also its the general trend of development, so the research team studied mainly for a new generation of display materials and quantum dot light emitting elements.

Korea Institute of Science and Technology (KIST) zodiac Beijing (phonetic) Dr. photoelectric materials research team, and the future Integrated Technology Research Center Cui Yuan Agency (phonetic), the use of polymer materials research team, Dr. PEIE and zinc oxide (ZnO) nanoparticles produce "injection layer" and "transport layer" the double layer structure, stability and luminous efficiency of the device have been maximized improved, thus the development of quantum dot LED display.

Macromolecular substances PEIE low price, and is an environmentally friendly material, if exposure to the substance and the metal conductivity or organic, can reduce the work function of each substance, and thus play the role of surface modification of materials. Higher indium tin oxide (ITO) work function of 4.8eV, therefore primarily used as an anode material in painted PEIE (surface modifier), the work function reduced 3.08eV, thus becomes a cathode use, such The stability of such conversion element structure is improved.

After forming the injection layer and the transport layer, only the role of polymer material PEIE injection layer and blocked external injection hole, then transporting the electron transport layer will fail, in order to solve this problem, the research team at PEIE coated with zinc oxide nanoparticles, to act as a role electron transport layer, by this design concept, the ultimate success of the development of quantum dot LED display, this research has recently published in the International Journal "Scientific Reports" in March Online 10th.

Dr. Wong commented: "Price PEIE and raw materials such as zinc oxide is not high, and on earth abundant, stable source element electrodes conversion structure is very stable, not only to extend the life of the display can also be used for solar battery optical sensor; quantum dot LED display is still in the trial stage, compared with the conventional display, color purity and quality have improved significantly, expected in the next 5 to 10 years are expected to replace OLED display and eventually to achieve mass commercial production. "