3506.91.10.00 - Optically clear free-film adhesives and optically clear curable liquid adhesives of a kind used solely or principally for the manufacture of flat panel displays or touch-sensitive screen panels

This HTS category, 3506.91.10.00, specifically covers optically clear free-film adhesives and optically clear curable liquid adhesives. These specialized adhesives are designed and manufactured with the primary intention of being used in the production of flat panel displays and touch-sensitive screen panels. Their optical clarity is a crucial characteristic, ensuring that light transmission and display quality are not compromised when incorporated into these sensitive electronic components.

The distinction between this subcategory and its sibling, 3506.91.50.00 "Other," lies in the precise application and optical properties. While 3506.91.50.00 encompasses a broader range of adhesives not elsewhere specified under heading 3506, this specific subheading is limited to those adhesives explicitly formulated for optical applications within display technologies. The key differentiator is the mandatory requirement for optical clarity and their principal use in the manufacturing of flat panel or touch-sensitive screens.

As this is a leaf node within the HTS structure, there are no further subdivisions. Therefore, classification under 3506.91.10.00 is determined by the adhesive's ability to meet the criteria of optical clarity and its designated purpose in the manufacturing of flat panel displays or touch-sensitive screen panels. Importers should ensure documentation clearly reflects these attributes to support accurate classification.