Micro-LEDs represent a major field of research worldwide and provide essential technology for a variety of sectors including any that rely on display technology. Micro-LEDs provide a visible light communication system that improves performance in terms of speed, density and power consumption. Faced with concerns of resource sovereignty, Organic LEDs (OLEDS) have grown in importance thanks to their use of organic materials. Building on decades of experience, CEA-Leti researchers recently achieved two world records in terms of OLED performance, opening the way to wid...

CEA-Leti will present two papers on its microLED technology advances at Photonics West 2024 about making matrices of LEDs with increased data-rate density, and strategies to reduce their efficiency loss at small sizes. Described in the paper, “Parallel Communication with InGaN/GaN Micro-LEDs Using a CMOS Compatible Approach”, making LEDs directly on a 200 mm silicon substrate opens the way to producing a matrix of LEDs of a few microns that are individually controlled by dedicated CMOS circuits. (Jan. 31, 9:00 – 9:20 am PST...

©metamorworks - Fotolia.com OPAs with Solid-State Beam Steering Can Reduce the Cost and Size of LiDAR Systems & Improve Performance; Results Reported at Photonics West 2021 GRENOBLE, France – March 8, 2021 – Taking a critical step toward developing LiDAR systems for widespread commercial applications, CEA-Leti has developed genetic algorithms to calibrate high-channel-count optical phased arrays (OPAs), as well as an advanced measurement setup enabling wafer-scale OPA characterization. OPAs are an emerging technol...

Company will produce microLEDs on both 200mm and 300mm silicon wafers Echirolles, France, Dec. 15, 2020 – Aledia, a French startup pioneering a disruptive technology for microLED displays, today announced it has manufactured the world’s first microLED chips produced on 300mm (12”) silicon wafers. The company, which developed its breakthrough technology on 200mm (8”) silicon wafers over the past eight years, will produce the chips on both 200mm and 300mm wafers. The larger wafers provide better economic payoff and cost-effective integration with ...

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...

The U.S.-based Innovasonic announced a partnership with CEA-LETI and CEA-LIST institutes to open a wholly-owned subsidiary in France. The company chose to work with CEA Tech Institutes to leverage their expertise in thin-layer piezoelectric material and their technologies in applied research in microelectronics and nanotechnology. Dr. Boris Kobrin, Founder and CEO of Innovasonic said, “Innovasonic addresses LIDAR, automotive cameras, PV solar panels, and other applications that could benefit from the solution's self-cleaning capabilitie...

CEA-Leti announced at Photonics West 2020 its new development of a silicon nitride (Si3N4) 200mm platform for developing photonics in UV through mid-infrared wavelengths. Available in CEA-Leti's SiN platform in a multi-project-wafer program, the breakthrough targets designers in integrated quantum optics, LiDAR, biosensing, and imaging whose projects require ultralow propagation losses and high-power handling capability. (Image: CEA-Leti) According to CEA-Leti, this ultralow-loss SiN layer is available for multi-level photonic circuits. It can be c...

Transmitting data with light is not a new idea but it is getting more materialized with improving technologies. At the coming CES 2020, SLD Laser and CEA-Leti are presenting their development in LiFi applications. SLD Laser, a visible laser light sources expert, has announced high-resolution sensing and ultra-high speed LiFi communication technologies for automotive and consumer applications. The company will demonstrate these innovations at CES 2020. SLD has developed LaserLight LiFi communication technology that delivers high-speed data rates of over 2...

French research institute, Leti of CEA Tech, announced a new technology development based on CMOS for GaN Micro LED displays manufacture. Researchers said the new process is capable of producing high performance Micro LED displays for a wide range of applications from smart watches to TVs. The approach fabricates elementary units of all-in-one red, green, blue (RGB) Micro LEDs on a CMOS driving circuit, and transfers the devices to a simple receiving substrate. The units are fabricated with a full semiconductor, wafer-scale approach. (Image: CEA...

Micro LED displays require the use of red, green and blue (RGB) LEDs, achieved by mixing nitride LEDs and phosphide LEDs. This mixing causes blue, green and red LEDs to behave differently in terms of temperature and aging, which impacts the quality of image color. Moreover, blue, green and red LEDs each require specific electronic drivers, making integration more complex. (Figure 1: Red emission at 630nm of 100µmx100µm of full InGaN LED grown on Soitec’s InGaNOS) RGB LEDs composed of the same material inducing the same behav...

The ideal solution for microLED makers would be the availability of efficient nitride LEDs in both green and red. In this case, all RGB LEDs would be composed of the same material with the same behaviors and driving conditions. The challenge is to find one material capable of spanning the blue to red spectrum. 

Exagan, a start-up innovator of gallium-nitride (GaN) semiconductor technology that enables smaller and more efficient electrical converters,announced it has raised €5.7 million (US $6.38 million) in first-round financing that will be used to produce high-speed power switching devices on 200mm wafers.

CEA-Leti announced that it has demonstrated a path to fabricating high-density micro-LED arrays for the next generation of wearable and nomadic systems in a process that is scalable to the IC manufacturing process.

CEA-Leti will demonstrate its new prototype for wireless high data rate Li-Fi (light fidelity) transmission at Light + Building 2014 in Frankfurt, Germany, March 30-April 4. The technology employs the high-frequency modulation capabilities of light-emitting diode (LED) engines used in commercial lighting

 Veeco Instruments Inc. (Nasdaq: VECO) announced today that CEA-Leti, a world-renowned research lab based in Grenoble, France, has selected Veeco’s TurboDisc® K465i Metal Organic Chemical Vapor Deposition (MOCVD) system for its program with Aledia, its nanowire-LED partner.  Aledia is a start-up company spun out of the CEA-Leti labs in 2011, and based at the CEA site. It counts among its three founders two former CEA researchers, Xavier Hugon and Philippe Gilet. Aledia’s goal is to manufacture 3D nanowire-based LEDs for solid-state lighting applications on thin silicon wafer substrates, of 8 inches or greater in diameter, at a cost significantly ......