Mass production of 500,000 nits super-high-brightness red Micro LED microdisplay
How to realize high-brightness red Micro LED has always been a difficult problem in the industry, and it is also a key barrier to the industrialization of Micro LED micro-display technology. The 0.13-inch red light microdisplay product launched by JBD this time broke through the efficiency limit and achieved a brightness level of 500,000 nits, breaking its previous brightness record.
The launch of JBD red light high-performance products will facilitate the further expansion of Micro LED technology in various scenarios such as sports optics, vehicle display, and near-eye display, and also lay the foundation for Micro LED's full-color AR applications.
JBD's red light products are self-luminous microdisplays based on the hybrid integrated semiconductor technology invented by JBD, which integrates AlGaInP semiconductor materials and silicon-based CMOS at the wafer level. AlGaInP semiconductor material is the key to realizing high-performance red light. It has the semiconductor band gap that best matches red light, and is the most mature semiconductor material in the industry for making red LEDs.
It is reported that JBD has been adhering to the AlGaInP-based red light Micro LED technology route for many years. Through continuous in-depth research and development, it has made efforts at both ends of material growth and chip technology research and development, breaking through the bottleneck of red light size effect and realizing a huge improvement in red light performance. .
In the 0.13-inch red light chip launched by JBD this time, the pixel size is only 4 microns, and the light-emitting point of Micro LED is only 2 microns, but it can easily load a microamp-level driving current and generate 500,000 nits of ultra-high brightness. In comparison, QD-LED and Micro OLED based on quantum dot color conversion are the other two mainstream self-luminous micro-display technologies. According to the currently disclosed brightness level of only a few thousand nits, JBD's red light chip has achieved dozens of times of brightness. Performance surpasses.
In addition to ultra-high brightness, excellent display quality and reliability level are the key to the commercialization of Micro LED microdisplays. JBD's AlGaInP-based red light products achieve a very narrow emission spectrum and excellent performance in color purity. As shown in Figure 4, the spectral half-wave width of this product is only about 15nm, which is much lower than the typical half-wave width of InGaN-based red light near 50nm and QD-LED near 30nm.
In addition, excellent display quality is inseparable from the close cooperation between CMOS backplane and Micro LED. Under the blessing of JBD's patented IC backplane technology, red light products achieve >95% pixel-level display uniformity, >100,000:1 ultra-high contrast ratio, and <1% crosstalk between adjacent pixels. The stability of the AlGaInP material and the excellent chip-scale packaging technology ensure the excellent reliability of the red light product. The results of the standard life test prove that the product can have a service life of tens of thousands of hours, far exceeding the life level of other mainstream self-luminous microdisplay technologies on the market.
All in all, the mass production of JBD's high-performance red Micro LED displays completes its multi-color series of micro-display products, which will strongly expand its applications from monochrome to full-color. So far, JBD has shipped more than one million micro-display panels, continuously providing core display components to the downstream Micro LED terminal application industry chain, accelerating the application of Micro LED technology in near-eye display AR/VR, HUD head-up display, sports optics, The application pace of 3D printing, micro-projection, light field display and other fields.