As a semiconductor technology enterprise under the strategic layout of BOE HC SemiTek, BOE Huacan Jingtu Technology (Zhejiang) Co., Ltd. focuses on the core business of patterned sapphire substrate (PSS) manufacturing. PSS is a critical core material for high‑end LED chip fabrication. By forming sophisticated micro‑nano structural patterns on the substrate surface, it can greatly improve the luminous efficiency and performance of LEDs. The core technical principle is that these special patterns serve as an optimized “template” for GaN (Gallium Nitride) epitaxial growth, effectively reducing crystal defect density. Meanwhile, it modifies the optical path and mitigates internal reflection to substantially enhance light‑extraction efficiency. Adoption of PSS typically boosts LED chip brightness by 20%‑30%, while the more advanced nano‑patterned sapphire substrate (NPSS) can deliver a light‑output efficiency gain of over 70%. Accordingly, PSS has become the mainstream option for high‑performance lighting, display backlighting and LED display screens. It is evolving toward larger sizes (e.g. 6‑inch) and finer nanostructures to meet the stringent requirements of next‑generation display technologies such as Mini/Micro LED for ultra‑high uniformity and luminous efficacy. As a vital link in BOE HC SemiTek’s industrial chain, this material lays an important foundation for maintaining the competitive edge of its high‑end LED chips, especially Mini/Micro LED products.