Patent ID: 8322903

Claim:
A light source module, comprising: a casing having a first side wall and a second side wall, wherein the first side wall and the second side wall define an opening, the opening faces a light incident surface of a light guide plate, and the first side wall and the second side wall are respectively positioned on two opposite sides of the opening; at least one reflective layer formed inside the casing and adjacent to one of the first side wall and the second side wall; a light bar disposed inside the casing and forming an angle with the light incident surface of the light guide plate; and at least one light source disposed on one side of the light bar facing the opening, and the light source satisfying the following condition: ΔCx (θ)=Max[ Cx (θ)]−Min[ Cx (θ)]>0.025, wherein the light source has a light-emitting plane, θ is an included angle formed between a connecting line and the normal of the light-emitting plane, the connecting line is connected between a point in the space and the center of the light-emitting plane, Cx(θ) is a chromaticity coordinate value x measured at angle θ, Max[Cx(θ)] is a maximum of the chromaticity coordinate value x measured at angle θ, Min[Cx(θ)] is a minimum of the chromaticity coordinate value x measured at angle θ, and ΔCx(θ) is a difference in the chromaticity coordinate value x measured at angle θ.