Light guide plate having high-density dots
AssigneeHon Hai Precision Industry Co., Ltd.
InventorMing-Yi Liao
Life of this patent
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Abstract
A light guide plate (10) includes a pair of opposite incidence surfaces (101, 103), an emission surface (108) and a bottom surface (109) opposite to the emission surface. A plurality of dots (11) is distributed on the bottom surface, and each dot is shaped as a rectangle or a square with one corner thereof cut away. Thus, a clearance between adjacent dots is relatively small. That is, a distribution of the dots is relatively compact, and this ensures that the light guide plate can provide emission of light beams with good uniformity. Furthermore, adjacent rows of dots are offset, and this offset can avoid bright lines. Thus, the light guide plate can provide improved display quality. Therefore, the light guide plate can be advantageously applied in back light systems of liquid crystal display devices.
Claims16
A lighting device, comprising:
- a light guide plate, comprising:
- at least one incidence surface;
- an emission surface;
- a bottom surface opposite to the emission surface;
- and
- a plurality of dots distributed on the bottom surface, each dot being one of rectangular and square, each dot further having at least one corner thereof cut away;
- and
- at least one lamp mounted adjacent to a corresponding one incidence surface, each lamp being configured for emitting light toward the one incidence surface corresponding thereto.
A lighting device comprising:
- a light guide plate, comprising:
- at least one incidence surface;
- an emission surface;
- a bottom surface opposite to the emission surface;
- and
- a plurality of dots distributed on the bottom surface, each dot being essentially one of rectangular and square in shape, each dot further having at least one corner thereof cut away, the dots being arranged in at least one of rows and columns, the shape and arrangement of the dots thereby being configured for allowing for close packing of the dots;
- and
- at least one lamp mounted adjacent to a corresponding one incidence surface, each lamp being configured for emitting light toward the one incidence surface corresponding thereto.
Dependencies are inferred from the claim text.