You may never have noticed that when the laser TV at home is broadcasting a program, there is a "real laser" display technology hidden behind the TV screen with vivid colors and vivid images.

　　This is the result of 40 years of hard work by Chinese scientists.

In order to achieve high-fidelity image reproduction, the R&D team led by academician Xu Zuyan of the Chinese Academy of Engineering and Bi Yong, chief engineer of Aurora, has studied for 40 years, using three-color laser as the light source, and through advanced architecture technology, found the "ultimate answer" of laser display. Laser display 2.0 era.

　　Laser display is the "fourth generation display technology" after black and white, color, and digital.

Ten years ago, the International Telecommunication Union established the latest standard BT.2020 for high-quality images. Only by reaching this standard can it enter the global high-end display market. True laser display is currently the only display technology that can reach BT.2020, so it has become Areas where countries are competing for development.

　　However, due to the high threshold of laser display technology for the three-primary color light source, most laser TVs on the market use the "laser phosphor display" technology.

However, in the process of optical filtering of this technology, brightness and color purity cannot be taken into account, and it is difficult to reach the BT.2020 standard, and it is still unable to realize "true laser".

　　In order to overcome this problem, Xu Zuyan, Bi Yong and other Chinese scientists put forward the concept of three-color laser display. They verified the principle of laser display based on a large amount of scientific and technological research, and then successively tackled speckle elimination, fiber coupling, and dynamic color balance. Key technologies such as management and high-efficiency thermal management have solved the problems of "real laser" effective thermal management and laser speckle.

　　"The application of'True Laser' display technology is not only to obtain the'entry ticket' to enter the global high-end display market, but also to enable the audience to realize the five major'real' experiences." Bi Yong said.

For example, the "True Laser" has a service life of 30,000 hours, and the brightness remains at about 80% of the initial brightness after the cycle, which can be used for urban lighting and cinema projections for a long time.

　　Bi Yong explained that the “true laser” used the “fiber coupling” technology in the light transmission process to confine the high-energy laser with the optical fiber. The advantages of high transmission efficiency and high reliability are not affected by external environmental changes such as shock, vibration, and temperature.

　　In 2014, Xu Zuyan proposed an industrial development roadmap centered on red, green and blue semiconductor lasers, which was included in a major national material project.

After that, the scientists established Zhongke Aurora to carry out technical layout around the "true laser" display technology, and build a technical platform for laser light source, thermal management, electronics research and development, reliability testing, and complete machine development.

In 2015, Zhongke Aurora basically formed a "true laser" display technology, which was verified to reach the BT.2020 standard.

　　Since then, the laser display technology independently developed by Chinese scientists has leapt to the “first echelon” in the world, and has China's presence in the high-end display field occupied by overseas companies.

　　Today, the Chinese Academy of Sciences team has achieved diversified application scenarios for laser display. Bi Yong said that laser display products have been mass-produced in engineering projection, home theater, digital projection and other aspects.

　　"Up to now, the development of global laser technology has only formed two large-scale industries-optical storage and optical communications. Laser display technology has the potential to become the third large-scale industry, driving revolutionary changes in China's optoelectronic industry." Xu Zuyan said, display industry The development process of the company is from standard definition to high definition, and currently high definition is moving to ultra high definition. Laser display technology will become the mainstream technology of the next-generation display industry.

　　China Youth Daily·China Youth Daily reporter Yang Jie Source: China Youth Daily