Abstract: A polymer composition includes: a first proportion of an aliphatic-diisocyanate terminated polyol; a second proportion of an aromatic diisocyanate; a third proportion of an aromatic diamine curative configured to extend a chain length of the aliphatic-diisocyanate-terminated polyol and the aromatic diisocyanate; a fourth proportion of a polyester polyol configured to polymerize with the aliphatic-diisocyanate-terminated polyol; and a fifth proportion of a high functionality dendrimer configured to crosslink polymer chains of the aliphatic-diisocyanate-terminated polyol. Further, the hybrid copolymer can be configured to form a protective film layer in a foldable electronic display, the foldable electronic display including: a cover layer arranged over the protective film layer; and an array of organic light-emitting diodes arranged beneath the protective film layer.

Abstract: A feedback-enhancing film includes: an elastic layer comprising a first polymer exhibiting optical transparency and elasticity; and an interface layer arranged across an upper surface of the elastic layer comprising a second polymer exhibiting optical transparency, impact resistance, UV resistance, and smoothness to touch. Additionally, the interface layer and the elastic layer mutually deform to resist transverse movement of a stylus tip across the interface layer in response to an application of writing force to the interface layer via the stylus tip. The film can also comprise a system including: the film; a stylus including a stylus tip; and a touch-sensitive screen.

Abstract: A feedback-enhancing film includes: an elastic layer comprising a first polymer exhibiting optical transparency and elasticity; and an interface layer arranged across an upper surface of the elastic layer comprising a second polymer exhibiting optical transparency, impact resistance, UV resistance, and smoothness to touch. Additionally, the interface layer and the elastic layer mutually deform to resist transverse movement of a stylus tip across the interface layer in response to an application of writing force to the interface layer via the stylus tip. The film can also comprise a system including: the film; a stylus including a stylus tip; and a touch-sensitive screen.

Abstract: One variation of tactile interface includes: a flexible substrate configured to deform to a first offset in response to application of a deflecting force on the flexible substrate; a tactile layer defining a tactile surface and configured to deform to a second offset in response to application of the deflecting force on the tactile surface; and a tie layer configured to retain the tactile layer against the substrate, the tie layer defining a first surface contacting the flexible substrate and a second surface contacting the tactile layer, the first surface of the tie layer configured to stretch by the first offset to maintain contact with the substrate and the second surface of the tie layer configured to stretch by the second offset to maintain contact with the tactile layer.

Abstract: A hybrid copolymer composition includes: a first proportion of an aliphatic-diisocyanate terminated polyol; a second proportion of an aromatic diisocyanate; a third proportion of an aromatic diamine curative configured to extend a chain length of the aliphatic-diisocyanate-terminated polyol and the aromatic diisocyanate; a fourth proportion of a polyester polyol configured to polymerize with the aliphatic-diisocyanate-terminated polyol; and a fifth proportion of a high functionality dendrimer configured to crosslink polymer chains of the aliphatic-diisocyanate-terminated polyol. Further, the hybrid copolymer can be configured to form a protective film layer in a foldable electronic display, the foldable electronic display including: a cover layer arranged over the protective film layer; and an array of organic light-emitting diodes arranged beneath the protective film layer.

Abstract: One variation of tactile interface includes: a flexible substrate configured to deform to a first offset in response to application of a deflecting force on the flexible substrate; a tactile layer defining a tactile surface and configured to deform to a second offset in response to application of the deflecting force on the tactile surface; and a tie layer configured to retain the tactile layer against the substrate, the tie layer defining a first surface contacting the flexible substrate and a second surface contacting the tactile layer, the first surface of the tie layer configured to stretch by the first offset to maintain contact with the substrate and the second surface of the tie layer configured to stretch by the second offset to maintain contact with the tactile layer.

Abstract: A feedback-enhancing film includes: an elastic layer comprising a first polymer exhibiting optical transparency and elasticity; and an interface layer arranged across an upper surface of the elastic layer comprising a second polymer exhibiting optical transparency, impact resistance, UV resistance, and smoothness to touch. Additionally, the interface layer and the elastic layer mutually deform to resist transverse movement of a stylus tip across the interface layer in response to an application of writing force to the interface layer via the stylus tip. The film can also comprise a system including: the film; a stylus including a stylus tip; and a touch-sensitive screen.

Abstract: One variation of tactile interface includes: a flexible substrate configured to deform to a first offset in response to application of a deflecting force on the flexible substrate; a tactile layer defining a tactile surface and configured to deform to a second offset in response to application of the deflecting force on the tactile surface; and a tie layer configured to retain the tactile layer against the substrate, the tie layer defining a first surface contacting the flexible substrate and a second surface contacting the tactile layer, the first surface of the tie layer configured to stretch by the first offset to maintain contact with the substrate and the second surface of the tie layer configured to stretch by the second offset to maintain contact with the tactile layer.