The ranked leader accounts for 2,170 of the 6,261 records in this landscape, with the top five assignees combined holding 60.5% and the top ten holding 70.9%. The leader board is dominated by display panel manufacturers and their component affiliates rather than pure materials suppliers. This concentration means a small number of firms have built dense claim coverage across both the mechanical hinge side and the glass or coating materials side.

Filing volume peaked at 905 records in 2020 and had fallen to 445 by 2024, a 47% decline over that span. However, 2025 and 2026 counts are still incomplete because publication typically lags actual filing by around 18 months, so the apparent slowdown in the most recent years should be treated as provisional rather than a confirmed trend. The 2021-2024 window is the most reliable basis for judging real momentum.

This filing, from Hong Kong Applied Science and Technology Research Institute, covers an ultrathin chemically-tempered glass substrate around 100 microns or less thick with a compressive surface stress of at least 100 MPa, bonded to a single-layer silsesquioxane hard coating without an adhesive layer. Its claimed impact resistance, measured by pen drop height before glass failure, is at least four times that of the uncoated substrate. Anyone working on adhesive-free hard coatings for ultrathin foldable glass needs to check this claim scope closely, particularly the coating chemistry and the thickness and stress parameters.