Abstract:
An optical film includes a transparent supporting (or base) layer; a structured layer integrally formed on the supporting layer and having a plurality of light-concentrating units including prism units juxtapositionally formed on the supporting layer; and a plurality of tiny protrusions or recesses formed on (or in) the surfaces of the light-concentrating units to overcome the optical defects of the optical film and to synergetically enhance the optical properties of the optical film.
Abstract:
A multiple-layer optical film comprising: a transparent base layer, a diffusion layer formed on the base layer, and an upper prismatic layer formed on the diffusion layer having a plurality of root portions protruding downwardly from the upper prismatic layer to be respectively engaged with a plurality of recesses as recessed in the diffusion layer for firmly interlocking the upper prismatic layer with the diffusion layer. The diffusion layer includes nano or micron particles homogeneously dispersed in a resin matrix to obtain a composite layer having better light diffusibility; and the upper prismatic layer having nice light concentrating effect, thereby cooperatively synergetically forming a multiple-layer optical film having enhanced brightness, light uniformity, and dimensional stability.
Abstract:
An optical film includes a supporting layer and a structured-surface layer having a plurality of prims juxtapositionally formed on the supporting layer, each prim including a lower prism element bonded with the supporting layer and at least one upper prism element integrally superimposed on the lower prism element to increase the prism height in order to pick up sideward refracted light to reduce light loss in order to enhance brightness of the optical film.
Abstract:
An optical film comprises: a transparent supporting layer, and a plurality of multi-story prisms having multiple peaks formed thereon and juxtapositionally integrally formed on the supporting layer, each peak of the prism tapered or narrowed upwardly towards a light output direction for increasing a light concentrating effect of the prism in order to increase the brightness of the optical film.
Abstract:
A process for plating copper on particulate graphite comprises cleaning and drying the graphite particles; wetting the graphite particles with an aqueous solution of cupric sulfate and glacial acetic acid; dripping the graphite particles as wetted with a layer of the aqueous solution on a rotating metal (including zinc, aluminum and iron) disk to conduct a displacement reaction to plate copper, as displaced by the metal existing in situ on the metal disk, on each graphite particle; and washing the graphite particles as plated by copper with water and then drying the copper-plated graphite particles.