Patent ID: 6412969
Filing Date: 2002-07-02
Classification: G02B

Abstract:
A backlighting device comprising:a light guide unit formed as a substantially flat panel of a first resin material having opposing major surfaces and side faces, the light guide unit having a light guide section, wherein light enters the light guide unit through at least one of the side faces and is emitted from at least one of the opposing major surfaces; a light source element disposed adjacent to the at least one side face of the light guide section for irradiating light onto the at least one side face of the light guide section, wherein the light guide unit further includes a light scattering section comprising a second resin material, the light scattering section substantially perpendicularly protruding from the at least one side face of the light guide unit, and wherein the light scattering section overlies the light source element so as to scatter the light irradiated by the light source element; wherein said second resin material includes a light scattering agent comprising fine particles of TiO2; and wherein the second resin material in the light scattering section contains about 2% to about 5% by weight of the light scattering agent.