#microLED #JBD #Wafer Technology

JBD's Transformation in MicroLED Manufacturing

JBD has made a significant advancement in its MicroLED microdisplay manufacturing by completing a major upgrade to its production architecture. This transformation shifts from a 4-inch wafer platform to a robust 12-inch wafer system, setting the stage for increased manufacturing efficiency and cost-effectiveness.

In the inception of the MicroLED industry, the competition primarily centered around performance factors such as brightness, design, and energy consumption. As demand for high-performance displays in augmented reality (AR) and artificial intelligence (AI) smart glasses grows, the focus is now shifting towards manufacturing capabilities. The ability to produce displays at scale and at lower costs while maintaining high quality has become a critical competitive edge for companies.

Historically, the yields and costs associated with MicroLED displays have limited their widespread adoption. The conventional method of wafer-to-wafer bonding has allowed for high throughput but has been hindered by the structural mismatch between advanced 12-inch silicon backplanes and the predominantly 4-inch MicroLED epitaxial wafers. This discrepancy has been a bottleneck, making it hard to utilize these materials efficiently and economically.

The industry commonly resorts to slicing 12-inch silicon backplanes to fit smaller epitaxial wafers. However, this creates a utilization limit of only 77% for backplane wafers, leading to substantial underutilization. Given that silicon backplanes are significantly more expensive than epitaxial materials, this underutilization raises the overall cost of the devices and creates challenges for scalable production.

Some companies in the MicroLED sector have considered implementing 8-inch wafers for mass production, yet this approach has its downsides. A geometric analysis reveals that 56% of the backplane area remains unutilized and low wafer yields during bonding and substrate removal continue to impede progress. Consequently, JBD has opted to bypass the 8-inch system entirely, choosing instead to adopt 12-inch wafer processes from the start.

With this in mind, JBD has implemented a novel