Russ Samuelsson, Fellow of the Royal Swedish Academy of Sciences and Fellow of the Royal Swedish Academy of Engineering: Indium gallium nitride MicroLED will become the key technology to dominate the new display industry in the future
As an important section of the 13th China (Hefei) International Household Appliances and Consumer Electronics Expo jointly sponsored by the Ministry of Industry and Information Technology, the China Council for the Promotion of International Trade, and the Anhui Provincial People's Government, the Hefei Municipal People's Government, Anhui Province's Economy and Information The first World Display Industry Conference hosted by the Chemical Industry Department and China Electronics and Information Industry Development Research Institute opened in Hefei on November 22. Russ Samuelsson, member of the Royal Swedish Academy of Sciences and member of the Royal Swedish Academy of Engineering Sciences, attended the main forum and delivered a speech. Russ Samuelsson pointed out that indium gallium nitride MicroLED display technology will allow 80% of the available light to be emitted from the display panel, and the light transmission efficiency will be greatly improved, becoming a more promising display technology after OLED.
Russ Samuelsson pointed out that the precision display industry is a comprehensive and extremely complex discipline. The 2014 Nobel Prize in Physics was awarded to three Japanese scholars in recognition of their efficient blue light-emitting diodes for nanomaterials. And the invention of a bright and energy-efficient white light source. It can be seen that the display industry has developed in the direction of higher precision, more composite, and tiny (nano-scale) crystal materials.
Nanowires carry the advantages of durability, reproducibility, and high stability of nanomaterials, and are continuously providing "inspiration" for the display field. What is a nanowire? Rus Samuelson explained that nanowires are a self-assembled rod-shaped single crystal structure with a narrow 20-150nm and a 1-40um length, which can be used to build a new technology for indium gallium nitride wafers. Used in physics, light emitting diodes, solar energy and life sciences.
Russ Samuelsson's research team took three years to develop indium gallium nitride MicroLEDs in 20µm, 10µm, 4µm, and 1.5µm sizes for red, green, and blue, and extended them from the laboratory to industrial practice stage. "We will synthesize different colors and combine wafer transfer technology to transfer millions of MicroLEDs directly to silicon wafers and flexible silicon boards. This direct view technology will greatly improve light transmission efficiency and solve all sizes The pain point of the screen resolution. A variety of terminals that use indium gallium nitride MicroLEDs-including microdisplay contact lenses, AR / VR glasses, smartphones, computers, TVs, etc.-will bring users a clearer vision. " Samuelson said.
In his summary, Russ Samuelsson said that the technological development of the display industry from LCD to OLED display has initially completed the stage from "Ape-Man" to "Upright Walking". The next stage is the evolution of advanced materials such as nitride MicroLED. This new type of nano-material MicroLED can allow 80% of the available light to be transmitted from the display panel, and the light transmission efficiency will be qualitatively improved. It is a more promising display technology after OLED. At that time, the display field will enter a new era.
Editor-in-chief: Qi Xu