Micro LED, UV LED technology show, performance show...


The summer of the Great Summer is approaching, and Lin Zhongjiuxia moves. This week, in the hot summer, we ushered in the "Great Heat" solar term, all things are prosperous, full of vitality, and the LED industry is also the same. Hot news in the LED industry this week: Sanan Optoelectronics has invested 16 billion yuan in the third-generation semiconductor project to start construction, and Aoyang Shunchang’s net profit in the first half of the year increased by more than 180%. Research shows that LED lights can be used to restore hearing...

★ The third-generation semiconductor project of San'an Optoelectronics with a total investment of 16 billion yuan started

On July 20, the third-generation semiconductor project of Changsha San'an officially started. The project has a total investment of 16 billion yuan, mainly to build a substrate (silicon carbide), epitaxy, chip and packaging industry production base with independent intellectual property rights.

After the project is completed and put into production, it will form an industrial scale of over 10 billion yuan, and drive the output value of upstream and downstream supporting industries to exceed 100 billion yuan.

★ Canadian researchers have developed a new method of Micro LED transfer

Researchers at the University of Waterloo in Canada have disclosed the creation of a new method of transferring and bonding Micro LEDs to flexible substrates.

The research team demonstrated their results of using a novel "paste and cut" method to transfer and bond GaN Micro LEDs to flexible substrates, and proved its effectiveness. This technology first bonds the Micro LEDs on the wafer to the glass substrate, and then releases them onto the flexible substrate. A novel pixel circuit can compensate for the drop in induced current in the pixel circuit due to work aging and mechanical bending.

In this way, the team successfully processed 20μm Micro LED chips. According to the researchers, the technology can use Micro LEDs to produce large-area flexible or conventional rigid displays.

★ The UCSB team found a way to improve the efficiency of InGaN Micro LEDs

The luminous efficiency of Micro LED will decrease as the size shrinks, resulting in an increase in inspection and maintenance problems, which is one of the key technical problems faced by Micro LED.

According to reports, the University of California, Santa Barbara (UCSB) and Nobel Laureate Mr. Shuji Nakamura recently published a paper describing a method for fabricating high-performance InGaN Micro LEDs using epitaxial tunnel junctions. The paper was published in the "Optical Letters" with the title "Size-independent low voltage for the growth of InGaN Micro LEDs with epitaxial tunnel junctions by MOCVD selective area growth technology". It describes the preparation of epitaxial layers by MOCVD selective area growth method. Research results of tunnel junction Micro LED.

★ ALLOS and KAUST work together to develop high-efficiency silicon-based InGaN red Micro LED

According to reports, German silicon-based gallium nitride expert ALLOS Semiconductors announced a cooperation with the research team of King Abdullah University of Science and Technology (KAUST) in Saudi Arabia. The two parties will jointly develop high-efficiency silicon-based InGaN red Micro LEDs.

The KAUST team has previously achieved some breakthroughs in the development of high-efficiency InGaN-based red Micro LEDs with a forward voltage lower than 2.5V through the use of local strain compensation and an improved MOCVD reactor design. They have grown red LEDs on sapphire substrates and Ga2O3 substrates.

★ Toyoda Gosei launched a new type of deep ultraviolet LED sterilization module

A few days ago, Toyoda Gosei announced the launch of a new type of deep-ultraviolet LED module for water sterilization, air sterilization and surface sterilization. At present, Toyoda Gosei is cooperating with Toyota Group and other companies to develop water sterilization, air sterilization and surface sterilization application products.

According to reports, the deep-ultraviolet LED module emits short-wave ultraviolet rays, covering UVC wavelengths that can destroy the genetic material of viruses and bacteria, and is expected to become a new type of germicidal lamp to replace mercury lamps. In order to expand the application of deep ultraviolet LEDs, Toyoda Gosei has developed products with excellent waterproof and heat dissipation performance such as modules or units. In addition, Toyoda Gosei cooperated with the Japanese non-profit organization Biomedical Science Association (Biomedical Science Association) to carry out experiments, and the experiments showed that Toyota Gosei's deep ultraviolet LED module is effective in killing human coronavirus 229E (HCoV-229E).

★ Research shows that LED lights can be used to restore hearing

Research conducted by scientists from the University of Göttingen in Germany shows that LED lights can be used to restore hearing in addition to improving eyesight.

Scientists from the university have invented an optical cochlear implant based on LED lights that can safely restore part of the hearing of deaf mice and gerbils. Experiments have shown that optical cochlear implants can send more selective signals when implanted in the ears of deaf mice and gerbils, and in the course of several weeks of experiments, these animals successfully passed sound-based behavior tests. However, the research team also pointed out that before starting clinical trials, a lot of work needs to be done to solve the problems of large optical cochlea size and wide light transmission range.

★ Another study shows that 40 Hz flashing light can help treat Alzheimer’s disease

A new study conducted by the Lighting Research Center (LRC) shows that 40 Hz red light may help improve the cognitive function of patients with Alzheimer's disease.

This new study shows that irradiating the opened eyes of healthy young people with 40 Hz red light stimulation can enhance brain gamma oscillations (a type of brain wave, Gamma oscillations). Gamma waves are images displayed by human nerves oscillating at 25 to 100 Hz (but 40 Hz is typical). Gamma oscillations are related to attention and memory processes and are known to be disturbed in patients with Alzheimer's disease. In the next step, LRC will investigate whether this promising non-pharmacological lighting interference method can improve the cognitive function of people with mild cognitive impairment and patients with Alzheimer's disease.

★ Aoyang Shunchang's net profit increased by over 180% in the first half of the year

On July 20, Aoyang Shunchang announced the 2020 semi-annual report. During the reporting period, the company achieved revenue of 1.61 billion yuan, a slight increase of 0.39% year-on-year; net profit attributable to shareholders of listed companies was 71,699,200 yuan, a significant year-on-year increase of 183.35%.

Aoyang Shunchang is mainly engaged in three major businesses: LED chips, lithium batteries and metal logistics. The LED business is mainly operated by its subsidiary Huai'an Optoelectronics. During the reporting period, the revenue of the three major businesses accounted for 22.26%, 30.81%, and 46.93% respectively. Among them, the LED business achieved sales revenue of 358 million yuan, a year-on-year decrease of 8.73%. During the reporting period, Huai'an Optoelectronics achieved operating income of 362,371,100 yuan, a year-on-year decrease of 7.73%; after-tax net profit was a loss of 44,175,300 yuan. (Organized by LEDinside Roy)