Abstract:
The invention relates: to a process for forming a texture on a substrate, comprising: depositing a deformable layer on the substrate; bringing this deformable layer into contact with the textured face of a daughter stamp; introducing the coated substrate and the daughter stamp into a pouch made of an impermeable material; introducing the pouch and its contents into a hermetic vessel; evacuating air from the vessel until a pressure at most equal to 0.5 bar is reached; sealing the pouch before reintroducing air into the vessel; introducing the sealed pouch and its contents into an autoclave; applying a pressure comprised between 0.5 and 8 bar and a temperature comprised between 25 and 400° C. for 15 minutes to a plurality of hours; opening the pouch; then separating the substrate and the daughter stamp; to a transparent assembly, comprising a glass substrate coated with a textured layer, obtained by this process; and to applications of this process to obtain a substrate intended to extract, guide or redirect light, or a superhydrophobic or superhydrophilic substrate.
Abstract:
A composite successively includes a transparent substrate, and a transparent layer, a portion at least of the surface of which is textured, with characteristic dimensions of the texturing forms of between 10 nm and 100 μm, and coated with a reflective layer.
Abstract:
The invention relates: to a process for forming a texture on a substrate, comprising: depositing a deformable layer on the substrate; bringing this deformable layer into contact with the textured face of a daughter stamp; introducing the coated substrate and the daughter stamp into a pouch made of an impermeable material; introducing the pouch and its contents into a hermetic vessel; evacuating air from the vessel until a pressure at most equal to 0.5 bar is reached; sealing the pouch before reintroducing air into the vessel; introducing the sealed pouch and its contents into an autoclave; applying a pressure comprised between 0.5 and 8 bar and a temperature comprised between 25 and 400° C. for 15 minutes to a plurality of hours; opening the pouch; then separating the substrate and the daughter stamp; to a transparent assembly, comprising a glass substrate coated with a textured layer, obtained by this process; and to applications of this process to obtain a substrate intended to extract, guide or redirect light, or a superhydrophobic or superhydrophilic substrate.
Abstract:
A transparent diffusive OLED substrate includes (a) a transparent flat substrate made of mineral glass having a refractive index of between 1.45 and 1.65, (b) a rough low index layer including mineral particles, the mineral particles being attached to one side of the substrate by means of a sol-gel mineral binder, the mineral particles near, at or protruding from the mineral binder's surface creating a surface roughness characterized by an arithmetical mean deviation Ra comprised between 0.15 and 3 μm, the mineral particles and mineral binder both having a refractive index of between 1.45 and 1.65; (c) a high index layer made of an enamel having a refractive index comprised between 1.8 and 2.1 covering the rough low index layer.