Advanced LED technologies are bringing increasing smart applications for automobile makers, especially for the rising market of new energy car. Tesla has recently applied a patent for its newly designed sunroof which integrated LED lighting and electrical tinting. The patent, titled “Advanced Sunroof Lighting System,” describes a sunroof consisting of multiple transparent layers including an electronic tint layer and a transparent lighting layer. By controlling the tint layer and lighting layer electronically, Tesla aims to monitor the light source inside the ca...

Superinjection is a physical effect that underlies modern LEDs and lasers and was believed to occur only in semiconductor heterostructures in the past. Recently, researchers from the Moscow Institute of Physics and Technology (MIPT) have found that the effect can also occur in homostructures, which opens up new prospects for the development of light sources. In the 1960’s, Zhores Alferov and Herbert Kroemer proposed to use heterostructures, which consist of two or more complementary semiconductors to generate wider bandgaps, enabling the concentration of electrons ...

An international research team demonstrated the possibility of tuning the color of a GaN LED by changing the time sequence at which the operation current is provided to the device. Scientists from Lehigh University, West Chester University, Osaka University and the University of Amsterdam have collaborated to develop a new technique of color tuning for GaN LED by controlling current injection to monitor the intensity ratios of emission atomic. The research, titled “Color-Tunablility in GaN LEDs Based on Atomic Emission Manipulation under Current In...

Signify, as a global leading lighting company, continues its development in innovative lighting technologies and sees light as a smart language to convey information. LiFi system which uses visible light to transmit data in over the air is a major focus of Signify to make light a new communication tool. Heading to the era of IoT, the number of internet connected devices increases drastically. Ed Huibers, general manager of Signify‘s visible light wireless communication system business unit, pointed out that there would be more than 50 billion devices relying on wireless in...

A research team at the University of Innsbruck, Austria cooperated with Osram Opto Semiconductors to develop a new red phosphor with excellent luminescence properties which can make LED lighting more energy-efficient. The research article, titled “Sr[Li2Al2O2N2]:Eu2+—A high performance red phosphor to brighten the future” was published in Nature Communications on April 23, 2019. The scientists created the new red phosphor whose light is well perceived by the eye as the human eye is more sensitive to green and less sensitive to blue and red. With th...

Researchers at The Korea Advanced Institute of Science and Technology (KAIST) have designed an ultrathin display that can project dynamic, multi-colored, 3D holographic images. The result of the study was published in Nature Communications. The system's critical component is a thin film of titanium filled with tiny holes that precisely correspond with each pixel in a liquid crystal display (LCD) panel. This film acts as a 'photon sieve' - each pinhole diffracts light emerging from them widely, resulting in a high-definition 3D image observable from a wide...

Micro LED start up VerLASE announce that it is developing unique technologies for massively parallel assembly of Micro LED dies or films to address the major challenge of Micro LED display mass production. VerLASE, a spin-off of Versatilis, aims to develop novel technology of color conversion layers for Micro LED display. The company focused on practical methods with semiconductor and MEMs industry methods and existing tools in novel ways to enable deterministic, massively parallel transfers of Micro die, yet with provisions that allow selective repair. A...

Apple has held talks with LiDAR suppliers seeking for advanced LiDAR sensors for its self-driving cars, suggesting that Apple is still working on its automotive vehicle project, known as “Project Titan,” reported Reuters. According to Reuters, Apple has talked to at least four LiDAR suppliers, aiming to find LiDAR sensors with a “revolutionary design” that are “smaller, cheaper and easily mass produced” in comparison to the current technology. However, the reports said Apple has not yet found one that meets its demands. (I...

A research team at Vienna University of Technology (TU Wien) developed a new kind of LED which generates light from the radiative decay of exciton complexes in extremely thin layers. Researchers produced what they called as “multi-particle exciton complexes” by applying electrical pulses to extremely thin layers of material made from tungsten and selenium or sulphur. These exciton clusters are bonding states made up of electrons and “holes” in the material and can be converted into light. The result is an innovative form of light-emitting diode in whic...

An international research team has developed near-infrared (NIR) LED based on perovskite in a laboratory at Linköping University in Sweden which achieve a record external quantum efficiency of 21.6 percent Perovskites have good light-emitting properties and are easy to manufacture. However, the external quantum efficiency of perovskite-based LED has until now been limited due to defects that arise in the material during manufacture. The defects act as traps for the charge carriers and thus cause energy losses. (Image: Linköping University) To solve the ...

The next generation display technology Micro LED is on its way to commercialization after years of development. The industry has been working on technology breakthroughs and improvements to speed up the progress of Micro LED. LEDinside has partnered with the Consortium of Intelligence Micro-Assembly System (CIMS), an organization established by Taiwan’s Industrial Technology Research Institute (ITRI) to push the development of Micro LED technologies and provide the latest trends and updates of the industry. CIMS connects the supply...

Osram Opto Semiconductors announced that it joined a project, SmartVIZ, which aims to explore the principles of high-resolution visualization solutions using Micro LEDs. Focusing on automotive interior applications, the Micro LED project expects to present initial demonstration by October 2021. The purpose of the SmartVIZ project is to provide research basis for future transparent, high-resolution, direct-emitting visualization solutions with Micro LED technologies. Osram will partner with ASM AMICRA and Fraunhofer IISB to carry out researches focu...

Researchers of Karlsruhe Institute of Technology (KIT) in Germany have developed a novel, even more economical LED street light by replacing conventional high-performance LED with a special array of weaker LEDs. The new approach succeeded in reducing power consumption by 20 percent. Michael Heidinger at KIT's Light Technology Institute (LTI) designed a smart circuit that compensates aging and failure of individual LEDs. With the new approach, it is possible to install a large number of LEDs on a single board at low cost. Moreover, the LEDs incre...

To detect cancer at early stage is critical for treatment. In order to spot tumors before they become too big to cure, researchers at Massachusetts Institute of Technology (MIT) developed an optical imaging system using near-infrared light to spot tiny tumors. The MIT research team noted that near-infrared light with wavelengths from 900 to 1700 nanometers, is suitable to tissue imaging because light with longer wavelengths does not scatter as much as when it strikes objects, allowing the light to penetrate deeper into the tissue. Using the advantage of near-infrared light, r...

The love-hate relationship between human and blue light becomes more complicated with a new research published by researchers at Purdue University and Boston University. They discovered that blue light exposure can kill Methicillin-resistant Staphylococcus aureus (MRSA), a bacterium that causes infection in various parts of the body and is called “superbug.” (image: Pixabay) According to the new research, published on March 30, 2019 on Advanced Science, researchers found that exposing MRSA to blue light can render it defenseless against antiseptics as m...

Visible light communication, also known as Light Fidelity (LiFi), which transmits data through LED light, has attracted attention in the industry. European lighting companies and telecom operators including Signify, Zumtobel and O2 have trailed the technology for various applications. As LED technology advances, the adjustable wavelength makes it possible to transferring data wirelessly via visible light like how WiFi works with radio waves. In comparison with WiFi, LiFi has two strong advantages: high speed and safety. LiFi can offer high speed data transmission ...

The developments and progresses of Micro LED have been under spotlight for years with researchers in the industry and the academic field working in related technologies. Worldwide researchers have also applied patents for their technology achievements and breakthroughs to protect their intellectual properties as well as to secure leading positions in the field. (Image: Samsung) The Korean Intellectual Property Office analyzed the patent applications related to Micro LED technology filed from 2000 to April 2018 across the world and revealed that more than 60 percent of...

For keeping the quality and effect of tunable LED lighting used in human centric lighting applications, a new research proposed novel methods to overcome the challenges of temperature change and lumen decay of LEDs. The research team demonstrated a system to maintain consistency and stability of LED light source over an extended period of time. Featured with tunable color temperature and spectrum, LED has been increasingly adopted in the developing human centric lighting applications in medical, educational and working environment for improving human well-being. Some of th...

UK optoelectronic technology solutions provider Plessey announced its achievement of developing a novel manufacturing method of green LED which does not require color conversion. Plessey has been working on developing Micro LED technology for AR and display applications. The new green LEDs manufactured without color conversion techniques deliver higher luminance that can be used in Micro LED displays. Conventional green LED production usually applies phosphors or quantum dot conversion materials to native Blue LEDs. These materials then convert short wavelengt...

Wearable devices have become common electronics in the modern society and they have been integrated with various smart applications to enhance life convenience. Apart from wearable accessories like glasses and watches, scientists are working on developing smart clothing to create even more diverse applications. The Korea Advanced Institute of Science and Technology (KAIST) announced its new achievement in developing a textile-based display module that is washable, wearable and self-powered. (Image: KAIST) Professor Kyung Cheol Choi from the School of Electri...

Lumotive, a LiDAR startup funded by Bill Gates, announced its development of a disruptive beam-steering technology which will significantly improve the performance, reliability and cost of LiDAR systems for the emerging self-driving car industry. With its patented system using Liquid Crystal Metasurfaces (LCM) and silicon fabrication, Lumotive introduced its beam steering LiDAR that is able to simultaneously offer large optical aperture, wide field-of-view and fast scanning. LCMs, semiconductor chips that steer laser pulses based on the light-bending principle...

A research team at National Institute of Standards and Technology (NIST) has developed nanowire UV LEDs that are able to produce five times higher light intensity based on a simpler shell design. UV LEDs are used in a growing number of applications such as polymer curing, water purification and medical disinfection. Researchers at NIST have been trying to make nanowire-based LEDs for scanning-probe tips intended for electronics and biology applications. Lately, researchers have been experimenting with nanowire cores made of silicon-doped GaN, which has extra ...

Researchers from Taiwan’s National Chiao Tung University, China’s Xiamen University and SIJ Technology have developed a monolithic Micro LED which achieves full-color display. The study demonstrates that Micro LED full-color display can be realized without mass transferring and the result was published on Scientific Reports and Photonics Research. The team fabricated the Micro LED full-color display on monolithic epitaxial wafer by combining nanoring (NR) structure and atomic layer deposition. From previous study, the researchers have demonstr...

Germany-based energy company E. ON will supply power line communications for smart lighting via partnership with enModus, the UK-based smart building solution provider. The two companies have signed an agreement for the cooperation. (Image: enModus) Smart building applications that integrate lighting, sensors and other technologies enable efficient energy and space usage and could save cost for companies. Through the partnership, enModus will makes buildings smart by transforming the existing mains power lines into a building-wide communications network. Power line comm...

Researchers at Rochester Institute of Technology in the U.S. proposed a new designed vertical integration of GaN LED which enables improved efficiency of Micro LED displays. Matthew Hartensveld and Jing Zhang from Rochester Institute of Technology published a new study on IEEE Electron Device Letter describing how they managed to vertically integrated nanowire GaN field-effect transistors (FETs) and InGaN LEDs. The novel structure places the transistor below the LED which for controlling and dimming. (Image: Hartensveld and Zhang) Comb...

Do you have problem waking up in the morning? The right lighting can help people overcome morning drowsiness, according to a study by Korean research team. Researchers from Korea Advanced Institute of Science and Technology (KAIST) suggested that a blue-enriched LED light can effectively boost morning alertness. This study further supports the concept of human centric lighting and provides the basis for major changes in future lighting strategies. The 2017 Nobel Prize winning research unveiled the molecular mechanisms that control circadian rhythms. In the early 2...

Researchers at the Leiden University Medical Center (LUMC) published a new finding of LED medical application for correcting heart rhythm disorder. The research team used a bioelectronics defibrillator implanted with LED to reset irregular heartbeat. They developed a system which detects fast arrhythmias in the atrium of a rat’s heart and sends a signal to an LED device placed near the heart. “The flash of light from this LED then causes the heart to generate an electric current itself to halt the arrhythmia. This is made possible by using gene therapy...

In order to improve the efficiency and lighting quality of LEDs, metal halide perovskites have been considered as a next generation material. Perovskite LEDs (PeLEDs) as emerging light-emitting technology have attracted attentions with the advantages of low manufacturing cost, high light quality and energy efficiency. A research co-led by the scientists from City University of Hong Kong (CityU) and Shanghai University developed a new manufacturing process to enhance optical properties and stability of perovskite LEDs. The research team used cesium trifluoroacetate...

Perception solution developer AEye announced that eight patents related to its perception system iDAR (Intelligent Detection and Ranging) have been confirmed. AEye’s iDAR is an integrated system combining solid-state MEMs-based agile LiDAR, fused HD camera, and software definable AI technology. With the aim to solve the challenges of robotic vision for autonomous vehicles, AEye developed iDAR, the artificial perception system that combines LiDAR, HD camera and AI intelligence to create a smart perception sensor that mimic human visual cortex fo...

Signify is speeding up its LiFi development and implement. The leading lighting company announced the trail of LiFi in Europe, North America and Asia through cooperation with more than 30 customers. Signify and its customers set up pilot LiFi installations in worldwide cities. In India, Signify works with Incubex, an incubator for product and business solution, to set up a LiFi implemented meeting room where new startups and firms can apply the technology with Signify’s Philips LiFi-enabled luminaires. In Europe, Signify collaborate with telecoms company...