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US 2010/0247901 A1Published application
Light guiding plate
OwnerCheng-Yang HSIEHinventor
Life of this patent
Estimating the term…
Abstract
A light guiding plate includes a substrate made of thermoplastic, and a plurality of optically reflecting particles evenly distributed in the substrate and having an average particle size ranging from 0.1 μm to 100 μm. Each reflecting particle has a shell made of a metal oxide such as Al2O3, ZnO or ZrO2, and a core made of SiO2, TiO2, or the same material of the shell. Thus, the light guiding plate has a high light transmittance and can diffuse incident light evenly so that it can be used to substitute a conventional light guiding plate and diffuser combination.
Claims8
A light guiding plate, comprising:
- a substrate made of thermoplastic;
- and
- a plurality of optically reflecting particles distributed in said substrate, said optically reflecting particles having an average particle size ranging from 0.1 μm to 100 μm, each said optically reflecting particle having a core and a shell, said shell being made of material selected from a group consisting of Al2O3, B2O3, BaCO3, Bi2O3, CaCO3, CeO2, Cr2O3, CoO, Co3O4, CuO, Dy2O3, Er2O3, Eu2O3, Fe2O3, Ga2O3, Ge2O3, Gd2O3, HfO2, Ho2O3, In2O3, K2O3, La2O3, Li2CO3, MgO, MgCO3, Mn2O3, Mn3O4, MoO3, Nb2O5, Nd2O3, NiO, PbO, Pb3O4, Pr6O11, Sb2O3, SiO2, Sm2O3, SnO2, SrCO3, Ta2O5, Tb4O7, TeO2, WO3, V2O5, Y2O3, Yb2O3, ZnO and ZrO2.
Dependencies are inferred from the claim text.