MICROLED DISPLAY TECHNOLOGY
LCD is still the mainstream display of automotive market. However, owing to the shortcomings of LCD, such as curved and flexibility design, OLED may have the chance to replace LCD. The full digital cluster is a cluster with networking and intelligence. It is high-functioning and the contents are abundant. The connection is easier, more complete, and more user-friendly to satisfy driver’s demand. The display sizes 3.5 to 12.5 inch. It transitioned from 3.5 to 10 inch spliced panels to the mainstream integrated display sized 10.3 to 12.5 inches with PPI (pixel per inch) of 111-199, and brightness of 800-1000 cd/m2, in order to assure display quality in a highly brightness environment during sunny days.
Plessey’s microLED enable compact displays that enhance the user’s experience, for both entertainment and informative content. The small form-factor of microLED displays transforms typical bulky AR headsets to something more akin to a pair of glasses, changing the design paradigm of the next-generation of AR/MR wearable devices, HUDs, and other consumer electronics.
Plessey’s AR-Vµ microLED display allows a high-frame-rate video with perfect daytime viewing clarity to be shown in a wide variety of applications, from augmented reality glasses to other wearables and head-up displays.
Plessey’s LEDs are made from GaN-on-Si, instead of the usual sapphire. This enables the creation of monolithic microLED – with multiple emitters on a single chip and multiple chips on 150, 200 and soon to be 300mm wafers.
MicroLEDs offer an emissive display technology that delivers high contrast, high speed, and wider viewing angles. MicroLEDs also offer the potential for significantly higher brightness and will offer this at significantly greater efficiency thus enabling power trade-offs, as well as enhanced robustness and longer lifetimes. They can also provide for a smaller form factor, key for numerous applications, for example, head-mounted displays, in contrast to reflective technologies that require a separate light source and complex and costly optics.
Plessey’s 200 mm epiwafer growth and wafer-level bonding technology on 200 mm CMOS backplanes, this results in an efficient and economically scalable manufacturing solution.
AU Optronics released video that shows its latest microLED display prototypes. First up is the company’s 12.1″ automotive display. This one features a 1920×720 (169 PPI) resolution and is made on an LTPS backplane.
Kyocera 200PPI, 1.8inch RGB microLED display that uses Glo’s all-InGaN RGB microLEDs, including the world’s only red InGaN microLED. Glo was established in the heart of Silicon Valley USA in 2010. Glo’s microLED displays have brightness up to 1M nits with full HDR capability. This display technology leverages existing TFT manufacturing infrastructure for production, avoiding the huge investment needed for OLED manufacturing.
SmartVIZ project explores innovative visualization technologies with micro LEDs working with Osram Opto Semiconductors exploring the principles of high-resolution visualization solutions using µLEDs (micro LEDs). There is still no standard definition for the term µLED, only a loose guideline for the opto chip’s dimension to include edge lengths smaller than 100 µm. Since µLED technology can produce extremely high luminance in a wide dynamic range, it can play a key role for future megatrends such as augmented reality applications. The focus of this project is on automotive interior applications. The project is expected to complete in October 2021 when an initial demonstrator will be presented.
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