Scientists at Linkoping University working with colleagues from China have shown how to achieve efficient perovskite LEDs. In an article published in Nature Communications, they provide guidelines on fabricating high-quality perovskite light emitters for high-efficiency perovskite LEDs. Since solution-processed perovskites contain large amounts of defects, which are mostly halide vacancies, efficient control of the perovskite crystallinity is required for high-performance optoelectronic devices. The research group at LiU, under the leadership of Senior Lecturer Feng G...

A research team led by a professor from Department of Optics and Photonics at Taiwan’s National Central University revealed a new production method for Micro LED epitaxy wafer. The team developed GaN thin film wafer under low temperature via an approach of high-energy physic. According to the researchers, the method would cost only one tenth of the current Micro LED production cost and could be applied for mass production. (Image:NCU) By combining data analysis and semiconductor manufacture process, the researchers aim to find innovative approaches for M...

In 2008, MEAN WELL officially released the first LED power supply – CLG-150 series and stepped into the potential LED market. Until now, the selling quantity of LED related products is uncountable. Having a special opportunity, MEAN WELL received several pieces of the CLG-150 products which were manufactured in 2008. A detailed investigation and analysis were executed, and the result is shared below. The number of the components could be from dozens to hundreds depends on the wattage and topology of power supply. Each component is applied to the ...

AlGaN-based DUV-LEDs are receiving much research attention due to their potential use in sterilization, water purification, phototherapy, and sunlight-independent high-speed optical communication. Scientists are investigating ways to improve their efficiency in converting electrical energy into optical energy. Deep UV LEDs made from AlGaN efficiently transfer electrical energy to optical energy due to the growth of one of its bottom layers in a step-like fashion. This finding, published in the journal Applied Physics Letters, can lead to the development of even more...

Researchers at the German Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have produced nanowires with operating wavelengths that can be freely selected over a wide range by altering the shell structure. Fine-tuned nanowires are able to improve efficiency of various optoelectronic components, making LEDs more colorful and solar cells more efficient, in addition to speeding up computers. The research results were published in Nature Communications in June. Nanowires can be used for miniaturized photonic and electronic components in nanotechnology. Applications include optic...

Micro LED technology breakthroughs continue to progress in order to tackle challenges occurred in different manufacture process. At Micro LEDforum 2019, professionals in industry introduced their progresses of various technologies for a wide range of Micro LED applications. Yen-Hsiang Fang at Consortium for Intelligent Micro –assembly System (CIMS) of Taiwan’s Industrial Technology Research Institute (ITRI) presented the developments of the organization. ITRI began to build up its full color Micro LED display technology since ...

LEDinside’s annual event, Micro LEDforum, has again gathered many experts in the industry and academia to share about their technological expertise and provide penetrating insights of products and applications in the current Micro LED landscape. The event started with Roger Chu, Research Director of LEDinside, delved into the development of the panel industry. He pointed out that panel production has outpaced market demand, causing furious competition and pushing manufacturers to focus on developing new display technology or improving the functionalities of the...

LEDinside, a division of TrendForce, holds the annual pivotal conference, Micro LEDforum 2019: Key Technology and Application Market, yesterday (July 2nd) at the National Taiwan University Hospital International Convention Center. Invited were Rohinni, TORAY, Konica Minolta, PARC, Plessey, Kyung Hee University, Macroblock, Ultra Display, the Industrial Technology Research Institute (ITRI) and other leading manufacturers and experts at home and abroad to give penetrating analyses into the breakthroughs, applications and business opportunities o...

Congratulations Macroblock on 20th anniversary! Our 20th anniversary is an opportunity to honor to celebrate and look ahead to what's next. We celebrated our 20th anniversary with a grand event addressing the future of micro-LED technology development and highlighting its contribution as a key to the next five years. This event is held on 27th of June at Shangri-La's Far Eastern Plaza Hotel in Taipei and offering full-day sessions. "In honor of celebrating Macroblock 20th anniversary, we hold this forum for ‘Next Five Years of LED Display Techn...

Micro LED technology is on its way of business transforming! Since last year, we have seen different Micro LED display products in various trade shows from worldwide companies. Although Micro LED technology is still fraught with myriad challenges, it has become much more developed than it was two years ago. Schedules for the commercialization of Micro LEDs will unfold as the technology matures, predicted to bring Micro LED market revenue up to US$4.2 billion by 2023. This year, LEDinside Micro LEDforum 2019 has invited professionals across the world to sha...

Continental, the German automotive manufacturing company, announced its collaboration with Leia, a Silicon Velley company for developing light-field automotive displays to show 3D information around vehicles. Through the partnership, Continental aims to develop a new light-field cockpit solution, the Natural 3D Lightfield Instrument Cluster, which, according to the company, is an evolutionary step in the design of the human-machine interaction within automotive vehicles. (Image: Continental) According to Continental and Leia, the concept of the new light-field solu...

A research team from Taiwan’s National Tsing Hua University developed a novel spray synthesis technique to fabricate multi-color Perovskite quantum dots with excellent emission properties which can enhance Micro LED display production. The research was published in Advanced Materials in 2017. (Image: Ministry of Science and Technology, Taiwan) Perovskite quantum dots (PQDs) are one of the most exciting research topics recently because of their excellent photophysical properties and low cost fabrication. However, the PQDs which were synthesized by inje...

After lots of talking about visible lighting communication, or LiFi (Light Fidelity), Signify announced the launch of Trulifi, a new range of LiFi systems. The world’s largest lighting company also reported two new customers of the systems. According to Signify, the LiFi systems, branded Trulifi, leverage existing and future professional luminaires for fast and reliable data transmission. Trulifi uses optical wireless transceiver technology built, or retrofitted, into Philips luminaires. Customers can use their current lighting infrastructure to power wireless conn...

China LED company Shineon presented its Micro LED display at GILE 2019 with its new brand “IconiView” targeting high-end display products. The 139-inch 4K Micro LED display was developed by Shineon and Lumens, using Flip-Chip-on-Module (COM) technology with a pixel density of 1,570,900 pixel/m2. The display achieved a contrast ratio of 3000:1 and its brightness is over 2000nit. According to Shineon, the product has been verified and can be mass produced. Shineon said it has been developing laser-lift-off thin-film LED technology which i...

Micro LED and Mini LED products are going to be the spot lights at this year’s Touch Taiwan, the Taiwan-based display show which will take place in Taipei, Taiwan during August 28 to 30. Micro LED is regarded the next generation display technology with its excellent performance including high brightness, high contrast, low power consumption and long lifetime which suppress OLED. Despite that several manufacturing barriers have slow down the commercialization process of Micro LED, worldwide technology developers have teamed up to leverage their expertise in...

Using LED as a light source, researchers at Osaka University have now developed a convenient light-driven process for oxidizing polypropylene (PP) without harmful waste. The research team used radicals to make the plastic react. Scholars chose an LED lamp as the light source photo-chemically activate radicals for breaking down the chemical bonds which make plastic unreactive and hard to decompose. "In applications like printing and medical materials, plastics must be surface-modified," explained Tsuyoshi Inoue, co-author of the study. "Oxidizing C-H bo...

Plessey, the UK-based semiconductor technology provider, has successfully developed GaN-on-Si monolithic Micro LED. According to the company, the innovative development will support next generation applications such as AR headsets, head-up displays (HUD) and other smart wearables to enter the mass market. Given their high contrast, high speed, wide viewing angle, high brightness and more efficient and longer-lasting operation, Micro LEDs are perfect for display applications on wearables such as smart watches, HUDs and AR headsets. (Image: Plessey) Howeve...

In the manufacturing process of Micro LED display, inspection and repair technologies are indispensable to enhance and assure production yield. But again, given the massive amount of Micro LED chips in tiny size, Micro LED display makers face a great challenge for the testing and repairing process. LED testing includes photoluminescence (PL) and electroluminescence (EL) test, the former method can test LED chips without touching and ruining them but it might not detect all the defects compared to EL test. On the contrary, EL test is able to identify more defec...

An emerging landscape bereft of standards, some have defined Micro LEDs as anything where the LED semiconductor die is smaller than 70 μm down to perhaps 1μm. Larger die are typically called Mini LEDs, used in applications such as local dimming. The semiconductor die are essentially a miniature version of the die in the well-known, commoditized solid-state lighting (SSL LED) industry. Besides physical dimensions, there are some subtle differences between the SSL industry and the display industry. Spectral tuning notwithstanding, the end goal for SSL industry...

In order to commercialized Micro LED display, the current goal of Micro LED technology developers is to reduce production cost and improve yield through optimizing manufacture process. One obstruction to the goal comes from the production process of mass transferring and bonding, as assembling million Micro LED chips to targeted substrates poses a great challenge for display makers. Micro LED display is made from Micro LED array consisting of a massive amount of Micro LED chips, forming individual pixels. Since the size of Micro LED chips is less than 100 &m...

Mojo Vision, a California-based startup focusing on invisible computing, revealed it Micro LED display featuring 14,000 PPI, which the company claimed to be the smallest and densest dynamic display ever made. The display sized only 0.48mm, same as a grain of sand but it can deliver a pixel density 300 times greater than current smartphone displays. The prototype technology uses Micro LEDs and is expected to be applied in wearable devices including AR/VR hardware and heads up displays (HUDs). (Image: Mojo Vision) According to Mojo Vision, the new monoc...

LED lighting could help to improve brain activity including memory and cognitive function, according to the research by a professor of bioengineering at The University of Texas at Arlington. Hanli Liu and Jacek Dmochowski, the assistant professor of bioengineering at City University of New York, are working on using a light-based technology to increase the energy available to brain cells and improve astronaut performance with an $800,000 NASA grant. Liu researches how to use lasers to deliver near-infrared light to the human brain to detect traumatic brain injurie...

glō, the Swedish-American Micro LED company, has been progressing its Micro LED technology since it exhibited the world’s brightest Micro LED display with JDC at Display Week 2018. In 2019, the company showcased four prototypes of Micro LED display including smartwatch display, AR display, HUD and a smartphone-sized panel with Kyocera during Display Week. (Image:glō) The solution of glō features two technology, RGB InGaN Micro LED and direct wafer transfer onto different substrate materials including silicon (CMOS), glass (LTO...

During Display Week 2019, LEDinside noted that Chinese LED makers and panel producers become strong industry players in Micro LED technology developments. The country was also ranked the second in the world with its Micro LED patent application, according to the statistics of the Korean Intellectual Property Office. The National Intellectual Property Administration of China published a patent applied by BOE which focuses on Micro LED transferring. In the patent application, BOE proposed a mass transfer solution with high efficiency in which a magneti...

In the latest report of LEDinside, titled “LEDinside 2019 Micro LED Next Generation Display Key Technology Report,” Micro LED technology not only features excellent performance in brightness and contrast that surpass OLED, its fast response time, low power consumption and reliability make it a perfect option for mobile and automotive applications. However, complicated production process which leads to low yield and high production cost has slowed down the commercial progress of Micro LED display. One of the challenges lies in the quality of Micr...

RaonTech, a Korean company who provides micro-display solution for AR/VR devices, announced its development of a 0.37-inch micro display with full HD (1920*1080) resolution based on LCoS technology. The display targets the rising market of wearable devices including head mounted display (HMD) and head-up display (HUD). (Image: RaonTech) According to RaonTech, the micro-display is consisted of liquid crystal and a special mirror on silicon wafer and driven by an RGB LED. Through the special mirror, the LED can increase pixel density of the small size d...

LED lighting installed on supermarket shelves is killing the reducing key nutrients in milk and shortening its shelf life, according to a new report by researchers from Newcastle University. The report, titled “Milk: Light exposure and depletion of key nutrients,” shows that high-intensity lighting, such as that found in supermarket dairy cabinets, damages nutrition value of milk by degrading essential nutrients such as Vitamin A, Vitamin B2 (riboflavin) and Vitamin D. Researchers found that milk begins to lose vitamin A after two hours of exposure to LED...

Despite that more and more industry players across the world have built partnership and poured resources into Micro LED development and research, the commercialization of the next generation display technology is still delaying. Due to technology barriers and equipment limitation, production cost for Micro LED display remains sky high, leading to postponed timeline of Micro LED display commercialization. But why is the manufacture of Micro LED display so difficult? What are the challenges occurred during Micro LED production that slow down the commercial progress? ...

Patently Apple reported that the US Patent and Trademark Office have published several new patents for Apple recently including two patents of Micro LED chip transferring and structure and one related to a head-mounted system with a holographic element. The first patent of Micro LED transferring, titled Micro LED Display, described a Micro LED structure with a metallization layer between a bonding layer and the micro p-n diode, as well as a conformal dieletric barrier layer. The structure of Micro LED enables a phase change during chip transferring and enabl...

Scientists warned that intensive exposure of blue light through heavy usage of electronical devices such as mobile phones and tablets might affect sleeping quality. A new study showed that by limiting or blocking evening exposure to light-emitting screen for one week, sleep quality for teenagers can be improved. The collaborative study by the Netherlands Institute of Neuroscience, the Amsterdam UMC and the Dutch National Institute for Public Health and the Environment indicates that by simply limiting exposure to blue-light emitting devices in the evening, adolescents can ...