Patent ID: 6923554
Filing Date: 2005-08-02
Classification: F21V,F21Y,G02B

Abstract:
1. A light source module for a backlight module, comprising: a casing, said casing having a top surface; a linear light source located on the top surface of said casing; and a shield located on the top surface of said casing and surrounding said light source; wherein said shield comprises a diffusing portion, two light guide portions, and a reflecting portion, said diffusing portion being located at a distance from said linear light source at one side opposite said casing and disposed parallel to said linear light source, said diffusing portion having a diffusion surface disposed on an inner side and facing said linear light source, said diffusing surface having a plurality of grooves adapted to reflect light rays from said linear light source toward said light guide portions, said light guide portions being located at a distance from said linear light source on two opposite lateral sides and disposed parallel to said linear light source between said diffusing portion and said casing, said light guide portions each having a light guide surface disposed on an outer side away from said linear light source, and said light guide surface having a plurality of grooves adapted to refract and diffuse light rays toward said casing, said reflecting portion being connected between said light guide portions at one side of said linear light source opposite said diffusing portion, said reflecting portion having a reflecting surface facing said linear light source, and said reflecting surface having a plurality of grooves adapted to reflect light from said linear light source toward said light guide portions.