On October 22, the Yangzhou Evening News reported that the LED semiconductor lighting industry is one of the “three new†industries promoted by the city. The reporter recently learned that the provincial high-tech high-brightness LED chip, which was undertaken by the Yangda Institute of Physics, has made important progress. The first batch of new chip samples have been successfully trial-produced and won three national patents.
LED is an energy-saving light source product that has been developed by countries all over the world to replace the traditional electric light source. The chip is the "brain" of LED. Such high-end chips have always relied on imports in China, and the price is relatively high. The domestic LED chips are weaker than imported chips in terms of life, brightness, and cost performance, and are vulnerable to wear and tear.
According to Professor Zeng Xianghua, the deputy director of the physics college of the school, if the chip is not handled well, it will cause uneven current distribution of the device and affect heat dissipation. If the heat is not handled well, it will affect the life.
In order to solve this problem, from 2007, Yangda Physics Institute has drawn 10 research personnel to form a research and development team, and cooperated with Huaxia Optoelectronics Co., Ltd., which produces LED chips, to redesign the structure of traditional chips. This project has also been included. Jiangsu Province science and technology research project. "The main problem is how to solve the problem of current uniformity. We optimize the design of the chip electrode structure to make the current distribution more uniform to improve the life."
Zeng Xianghua revealed that the first batch of new chip samples have been successfully trial-produced and won three national patents. After 1000 hours of continuous electrification testing, the researchers will also improve the details, the new chip's stable service life can be increased to more than 50,000 hours. It is reported that the new chip will be greatly reduced by the independent research and development of China, and can be used to replace imported chips.
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