STRUCTURE OF CORRECTING EMITTING FIELD OF LIGHT GUIDE PLATE

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PROBLEM TO BE SOLVED : To provide a structure to correct the emitting field of a light guide plate and improve balance of emission of the light guide plate. SOLUTION : The light guide plate is composed of an incident face, a reflecting face, and an emitting face. The reflecting face has a large number of V-shape light guide bodies, and the light direction of the V-shape light guide bodies is in parallel to the lamp source. The reflecting face has further an auxiliary light guide structure at the second side region of the light guide plate. The light direction of the auxiliary light guide structure is vertical to the lamp source and has a long oblique side and a short oblique side, and is arranged so that it becomes from dense to rare from the second side region toward the center of the light guide plate. Then, by the long oblique side of the auxiliary light guide structure, much of the light source is guided in a right direction and the balance of emission of the light guide plate is improved. COPYRIGHT : (C)2009, JPO&INPIT