Many leading LED companies across the world including Cree, Nichia and Osram see horticulture LED lighting a growing market with expanding applications. Apart from the well-known application of vertical farming supplementary lighting for greenhouses is also a major growing segment for horticulture LED lighting. A recent study published agriculture journal Agronomy demonstrated that LED lighting can improve yield and precocity of greenhouse tomatoes in the Mediterranean, where sunlight is considered sufficient comparing to other region. Researchers of the University o...

One critical issue of Micro LEDs is that their luminous efficiency decrease as their dimension shrink, leading to increasing problems in inspection and repair. Technology developers thus try to improve Micro LED efficiency at the phase of epitaxy wafer production. A group of researchers from UCSB, including Nobel winner Shuji Nakamura, recently published a paper describing the method of fabricating high performance InGaN Micro LED with epitaxial tunnel junctions (TJs Micro LEDs). Published in Optics Express, the paper, titled “Size-independent Low...

Researchers of King Abdullah University of Science and Technology (KAUST) have been working on improve efficiency of red Micro LEDs and they recently announced the achievement of manufacturing stable red Micro LED based on InGaN. (Image: KAUST) A major challenge facing the development of Micro LEDs is to integrate red, green and blue light into a single LED chip. Current RGB LEDs are made by combining two kinds of materials with InGaP red LEDs and InGaN blue and green LEDs. "Creating RGB displays requires the mass transfer...

A research team led by Shin-Tson Wu, Professor from the College of Optics and Photonics, University of Central Florida, USA, conducted a comprehensive analysis on the current display technologies: LCD, OLED, Mini LED and Micro LED. The researchers analyze the performance of self-emitting Mini LED, Micro LED and OLED display, as well as Mini LED backlit LCD, evaluating the power consumption and ambient contrast ratio of each display in depth and systematically compared the dynamic range, motion picture response time, color gamut, and adaptabili...

The U.S.-based material supplier Coretec Group who focus on silicon-based materials utilizing Cyclohexasilane (CHS) development announced that it has filed a provisional patent with its CHS derived silicon. The provisional patent notes three LED applications that Coretec believes its CHS technology is suited for. The first application is the ability to create a cost-efficient, high intensity UV LED capable of killing COVID-19 and other microorganisms. As one of the existing challenges of UV LED is the limitation of reaching needed intensity light, C...

Self-driving technology startup Aurora announced its self-developed LiDAR sensor FirstLight LiDAR last week. The LiDAR sensor was tested on Aurora’s test vehicles to help the perception system to see and track objects farther, faster, and with greater precision. (Image: Aurora) Aurora acquired LiDAR company Blackmore last year eyeing the expertise of FMCW (Frequency Modulated Continuous Wave) technology. FMCW LiDAR delivers a constant stream of light and changes the frequency of that light at regular intervals. With the technology, Auro...

Vuzix, who focusing on smart glasses and AR technology, announced the recent granting of a series of patents and patents pending, focused on wearable computer and AR smart glasses. The company said that its patent portfolio has grown from 90 patents and patents pending to 166 over the last 36 months. Vuzix’ patent portfolio encompasses a range of IP including waveguides with holographic optics, laser and Micro LED display integration, fashion forward industrial designs and optics that support low cost single layer waveguides to multilayer large field of view solutions. ...

Researchers at the University of Waterloo in Canada reported that they have created a new method to transfer and bond Micro LEDs onto flexible substrate. The approach is called “paste-and-cut” by the researchers and can selectively transfer GaN Micro LED from sapphire substrate onto flexible platforms. The results were published at Nano Energy in July, 2020. The research team unveiled their achievement of using the novel “paste-and-cut” approach to transfer and bound GaN Micro LEDs onto flexible substrate with demonstrated effectiveness. T...

Instrument Systems of the Konica Minolta Group introduces a camera-based measurement solution for Micro LED wafer testing that generates 2-dimensional, pixel-resolved optical analyses within given cycle times. The LumiTop 4000 has a resolution of 12 MP and can detect the smallest of defects and inhomogeneities on the wafer. Thanks to a 100 mm macro lens, the camera enables fast parallel inline analysis of all Micro LEDs on a wafer at a single test station. Micro LEDs are renowned for being an exacting new display technology. According to the latest definition of L...

A research team from South Korea developed a new method to power medical implants using active photonic wireless system incorporating Micro LED that can be attached on skin and a photovoltaic device that integrated with medical implant. Medical implants such as pacemakers help to monitor and regulate physical condition of people to support efficient medical treatment. These devices usually need a constant source of energy to operate, resulting in issues of power supply. Batteries and wired power also create limitation for applications. For example, when battery power gets exhau...

For LED industry players in Taiwan who have been facing stiff competition from China’s supply chain and South Korea’s monopoly on OLED technologies, creating new business opportunities in Mini LED and Micro LED could be a solution. However, Chinese companies are also rushing into the Mini LED and Micro LED markets with recognition of the growth potential there. At the moment when Micro LED has yet to reach technological maturity, and Mini LED sets to enter a phase of explosive market growth. What are the roles of Chinese companies in the L...

As Micro LED is yet to enter commercialization due to layers of technical difficulties and exorbitant cost, Mini LED has already been successfully incorporated into the application of commercial operation, and has made its presence in the application field of high-end display such as commercial and gaming monitors, including the Mini LED gaming notebook of MSI, as well as the gaming monitors of Asus, Acer, and Lenovo. Now, the industry is anticipating Apple to release multiple iPads and MacBooks adopted with Mini LED backlight technology between 2H20 and 2021 tha...

The arrival of Mini LED in the latest competition of display technology has not only laid down the foundation for the next generation of Micro LED display technology, but also became the new opportunity in breaking through the predicament for the LED industry and panel manufacturers. As invigorated by the aggressive involvement from major brands including Apple, multiple Mini LED backlight products and the application of RGB self-luminous displays are now on the verge of commencement, and the new products for the relevant application are expected to enter substantially i...

Mini LED and Micro LED, the novel display technologies based on LED, have lit up the industry which long suffered from low price competition. As worldwide companies and research institutes pouring resources into technology development in the past years and building up partnerships to formulate new ecosystem, several Micro and Mini LED achievements were revealed. Display products using Mini LED backlight are launched and Micro LED prototypes also continue to achieve breakthroughs. (Image: Pixabay) Apple’s rumor of launching Mini LED backlight techn...

How artificial lighting could provide full spectrum for plants has been an issue addressed by agri-tech experts. Apart from LEDs, a new study of ITMO University provide a new approach by creating light with ceramics. Scientists from ITMO in collaboration with their colleagues from Tomsk Polytechnic University came up with an idea to create light sources from ceramics with the addition of chrome that deliver not only red but also infrared (IR) light to enhance growth of plants. The results were published in Optical Materials. (Image: Anastasiia Babkina/ITMO...

Aiming to reduce the risk of COVID-19 infection and diminish coronavirus, UVC radiation has been widely promoted and applied in disinfection. But UVC radiation exposure could also lead to damage on skin and eye for human and animals. Finding a way to safely deploy UVC light has thus become a target for researchers all over the world. Far-UVC with a wavelength of 222 nm is considered a safe alternative in UVC disinfection as many researchers found that the light can effectively deactivate germs and viruses without causing harm for people. A new study led by researc...

A research led by researchers of UCL (University College London) revealed that staring at a deep red light for three minutes a day can significantly improve declining eyesight. Based on the result of the study, scientists believe that new affordable home-based eye therapies could be develop, helping the millions of people globally with naturally declining vision. Lead author, Professor Glen Jeffery (UCL Institute of Ophthalmology) indicated that people’s visual system declines significantly once over 40 as cells in the eye's retina begin to age. Cell’s mi...

Korea researchers announced that they have developed a GaN Micro LED that can be folded and cut by scissors. The team demonstrate a method of creating a deformable LED based on remote heteroepitaxy of GaN. The research, titled “Remote heteroepitaxy of GaN microrod heterostructures for deformable light-emitting diodes and wafer recycle,” was published in Science Advances on June 3, 2020. The research was jointly conducted by professor from Sejong University and the University of Texas. The team manufactured Micro LEDs on a graphene-coated wafer ...

Micro LED technology supplier PlayNitride said that it aims to reduce production cost of Micro LED chip by 95% in five years to meet the requirement of mass production and is continue to raise funding. Charles Li, CEO of PlayNitride, noted that the two major keys of Micro LEDs are to make them small and cheap, which is the current challenge for commercialization. In order to achieve the goal, it is critical to connect the supply chain from wafer manufacture, chip process, transfer technology, display module, backplane driver and system tuning. Most of the processes ...

Scientists at the Circadian Light Research Center published their new finding in the Journal of Biological Rhythms pointing out the narrow band of blue light that synchronizes our circadian rhythms during the day and disrupts them at night. The study could help lighting fixtures and LEDs to be further engineered and designed to optimize human health. Blue light exposure at night is a well-established public health hazard. It suppresses melatonin, causes circadian disruption, and is linked to an increased risk of sleep disorders, obesity, diabetes, and breast and prostate can...

A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universität zu Berlin has succeeded for the first time in producing LEDs from a hybrid perovskite semiconductor material using inkjet printing. This opens the door to broad application of these materials in manufacturing many different kinds of electronic components. The scientists achieved the breakthrough with the help of a trick, which was called "inoculating" (or seeding) the surface with specific crystals. (Image: Claudia Rothkirch/HU Berlin) Scientists at HZB have al...

A new LED manufacture method which does not require phosphor to make white semipolar LED was published by a research team of UCSB with Shuji Nakamura, Nobel winner and LED pioneer, as a co-author. The result was published in Optics Express. White light emitting LEDs are usually made from blue LEDs combining yellow phosphor. But phosphor converted white LEDs usually suffer energy loss and reduced thermal stability. Phosphor-free LEDs, however, are rather difficult to fabricate but the UCSB team proposed an easier method to achieve efficient and polari...

Display technologies keep progressing with new solutions coming up to tackle Mini LED and Micro LED production difficulties and new materials using to create OLED display. Now, scientists are using recycled human hair to develop flexible OLED displays. Researchers from Queensland University of Technology (QUT) and Griffith University in Austria have teamed up with a barbershop and develop a method to turn human hair into OLED display. The research was published in Advanced Materials. (Image: Queensland University of Technology) The small hair ...

French research institute CEA-Leti announced that its researchers have broken the throughput world record of 5.1 Gbps in visible light communications (VLC) using a single GaN blue Micro LED. Their data transmission rate of 7.7 Gbps achieved with a 10 µm Micro LED marks another step toward commercialization and widespread use of LiFi communication. (Image: CEA-Leti) VLC, or LiFi (light fidelity), is an emerging wireless communication system that offers an alternative or a complementary technology to radio frequency (RF) systems such as WiFi and...

UC Santa Barbara researchers continue to push the boundaries of LED design a little further with a new method that could pave the way toward more efficient and versatile LED display and lighting technology. UCSB electrical and computer engineering professor Jonathan Schuller and collaborators describe this new approach, which could allow a wide variety of LED devices — from virtual reality headsets to automotive lighting — to become more sophisticated and sleeker at the same time. (Image: UCSB) Usually LEDs emit spontaneous light, comparing to...

LG Display announced that it will be leading Korean national project for developing stretchable displays, aiming to expand display applications in the era of IoT, 5G and self-driving car. Selected by South Korea’s Ministry of Trade, Industry and Energy (MOTIE), LG Display will oversee the large-scale R&D project and lead a collective of 21 entities covering related companies, research institutes and universities. Jointly these parties will develop core technologies, materials, component and build up a robust ecosystem for Korea’s display technolog...

Perovskite is one of the focuses of LED research as the material is believed to deliver light with lower production cost. However, the efficiency and stability of perovskite-based LEDs still need to be improved with worldwide research teams continuously working on the material. Helio Display Materials, a spin-off company of Oxford University and Cambridge University, is pushing perovskite LEDs commercialization with the IPs from both universities. (Image: Helio Display Materials) Helio Display Materials aims to leverage its technology to enhance color perform...

Research team consisting of electrical and computer engineers at the University of Virginia and University of Texas-Austin has developed an avalanche photodiode that achieved record performance that could transform receiver components for LiDAR. The breakthrough was published in Nature Photonics on May 18, 2020, under the title “Low-noise high-temperature AlInAsSb/GaSb avalanche photodiodes for 2-μm applications.” Researchers said the low-noise, 2-μm avalanche photodiode can achieve eye-safe high-power operation. The team used the novel optical ...

Advanced LED technology enables innovative automotive lighting including adaptive driving beam (ADB) by which each single LED pixel can be control independently for a wider range of applications. Based on similar concept, Japanese LED maker Stanley proposed an innovative way to combine laser and MEMS (Micro-Electro-Mechanical System) mirror, which allows high precision light and sensing function. (Image: Stanley) Stanly uses blue laser light which can be reflected with MEMS mirror and converted into white light with phosphor to build a headlight system. V...

To enhance UVC disinfecting applications, a new study proposed an alternative transparent conductor that deliver UV spectrum to solve the issue of low efficiency of current UV LED technology. The research provide the approach of using SrNbO3 as an electrode material for UV LED. A joint research group with scholars from The Pennsylvania State University, University of Minnesota from the U.S. and The University of Tokyo and Tohoku University in Japan published their study in Communications Physics suggesting a solution of UV-transparent electrode to de...