Light guide plate and backlight system using the same
AssigneeHon Hai Precision Ind. Co., Ltd.
InventorsCharles Leu, Tai-Cheng Yu, Ga-Lane Chen
Life of this patent
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Abstract
A backlight system (10) in accordance with the present invention includes a light guide plate (20) and two light sources (30) disposed adjacent opposite sides of the light guide plate. The light guide plate includes two incident surfaces (21), a light exit surface (22) and a bottom surface (24) opposite to the light exit surface. The bottom surface has a plurality of diffusion units (23) therein, and a reflective film (241) thereon. Diffusion surfaces (25) of the plurality of the diffusion units cooperate with each other to form a curved face for directing light beams to be output from the light exit surface in a predetermined angular range.
Claims16
A backlight system comprising:
- a light guide plate including:
- at least one incident surface;
- a light exit surface;
- and
- a bottom surface opposite to the light exit surface, the bottom surface having a plurality of diffusion units thereat, and a reflective film thereon, each diffusion unit having a diffusion surface, all the diffusion surfaces cooperating with each other to form a curved face for directing light beams to be output through the light exit surface in a predetermined angular range;
- and
- at least one light source disposed adjacent the at least one incident surface of the light guide plate for emitting light beams.
A light guide plate including:
- at least one incident surface;
- a light exit surface;
- and
- a bottom surface opposite to the light exit surface, the bottom surface having a plurality of diffusion units thereat, and a reflective film thereon, each of said diffusion units having a diffusion surface, all the diffusion surfaces cooperating with one another to form a curved face for directing light beams to be output through the light exit surface in a predetermined angular range.
A light guide plate for use in a backlight system, comprising:
- at least one light incident surface;
- a light exit surface;
- and
- a bottom surface opposite to the light exit surface, a plurality of matrix-like convex surfaces provided around the bottom surface and commonly defining a large curved face oriented toward the light exit surface for directing light beams to be output through the light exit surface in a predetermined angular range.
Dependencies are inferred from the claim text.