Jade Bird Display (JBD) is shipping prototypes of a single panel monolithic RGB MicroLED. While the earlier Hummingbird series was designed for 30-degree field of view (FOV) applications, the Phoenix series is tailored for more expansive FOVs of over 50 degrees.
Unlike many existing systems that use quantum dots (QD) for color conversion, the Phoenix series integrates the colors directly using semiconductor emitters. This approach is expected to overcome the brightness and lifespan limitations of QD technology. Most MicroLED displays achieve color by combining three separate panels (one each for red, green, and blue) using a prism. The Phoenix’s single-panel approach is significant because it allows for a larger field of view and more compact hardware.
The Phoenix series benefits from JBD’s multi-level interconnect technology, resulting in high brightness and color purity, according to the company. The engineering samples of the Phoenix series have a 0.22-inch panel size. It achieves a total stack thickness of less than 5 um, which minimizes absorption losses. This technology, combined with the ability to operate at high flux density, allows the Phoenix series to produce incredibly bright displays of up to 1 million nits, according to JBD. The prototype also showcases a narrow full width at half maximum (FWHM) spectrum, leading to high-quality color representation. The red, green, and blue pixels achieve FWHM of 15 nm, 30 nm, and 18 nm respectively, indicating high color purity.
The prototype utilizes a 2.5um sub-pixel pitch. Three semiconductor emitters (for blue, green, and red) are used. Specifically, they are made of AlInGaN (blue and green) and AlInGaP (red). Four sub-pixels are combined in a 5um-pitch white pixel, each having its individual current driving channels. This arrangement offers versatility in controlling color and brightness at the micro-level.
JBD plans to showcase the prototypes in 2024, with mass production scheduled for 2025.
