Improving the efficiency of LED light extraction by developing nano imprint resin

UV curable nano imprint resin was developed for the purpose of surface micromachining of LED chips. In the LED chip manufacturing process, in order to make the LED light can output high efficiency, the chip surface is usually formed on the surface of micro bump. According to reports, the use of the resin can be developed to lower the cost of the formation of smaller than the original bump, thereby improving the efficiency of light extraction LED.

In the LED chip surface concave and convex, the long-term use of lithography (photolithographic) technology. The common sense is to break the nano imprint lithography (nanoimprint) technology. Nano imprint lithography technology is characterized by low cost in a short period of time to form a nano interval of micro bump. According to the introduction of good oil petrochemical, the company will strive to start in the second half of 2011 to start the new plant in the use of the technology, is currently in the camp of lithography and nano imprint technology camp fierce competition in the state of.

The development of nano - imprint resin with good properties of "excellent corrosion resistance to fluorine and chlorine gas". For example, the sapphire substrate for LED etching selection ratio of 0.7 ~ 0.8. The higher the value, the thinner the resin layer of the substrate. The resin layer is formed on the substrate after being coated on sapphire. At this time, the thinner the resin layer, it is easy to remove the mold from the resin, so it can improve production efficiency.

The development of nano imprint resin was focused on the use of LED chip. It currently has started to provide products. In the evaluation by products, improve the effect of LED light extraction efficiency of recognition of clients, can be substantially close to the "most early in the second half of 2011 to get the order", the company was full of expectation.