Patent ID: 7568828

Claim:
A light guide plate comprising: a light incidence surface; a light reflection surface having a plurality of light-guiding structures which are elongate raised projections, said elongate raised projections having a V-shaped cross-section and extending in a direction parallel to a lengthwise direction of a light source and parallel to each other, said light reflection surface having an edge margin section immediately adjacent to said light incidence surface, said edge margin section having opposite end zones in a lengthwise direction respectively corresponding to opposite lengthwise ends of said light source, each of said end zones being formed with a plurality of auxiliary light-guiding structures which are elongate raised projections extending in a direction perpendicular to the lengthwise direction of said light source, each of said elongated raised projections having an irregular V-shaped cross-section defined by a first inclined side and a second inclined side, said first inclined side being longer in said lengthwise direction than said second inclined side, said first inclined side facing endwise in the lengthwise direction and being located closer to a lengthwise end of said light reflection surface, said second inclined side being opposite to said first side and located away from an end of said light reflection surface, said long side providing a side surface with a greater area than that of said short side; and a light emission surface which is opposite to said light reflection surface and adjacent to said light incidence surface, said light emission surface having a plurality of light-guiding structures which are elongate raised projections each having a V-shaped cross-section and extending in a direction perpendicular to a lengthwise direction of said light source and parallel each other.