Light guide plate with transmittance enhancement layer and backlight system using same
First Claim
1. A light guide plate comprising:
- a transparent plate having a light emitting surface and a light incidence surface opposite to the light emitting surface; and
a light transmittance enhancement layer provided on either the light emitting surface or the light incidence surface;
wherein the light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride, and a thickness of the light transmittance enhancement layer is in the range from 58˜
69 nanometers.
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Accused Products
Abstract
A light guide plate (20) in accordance with the present invention includes a transparent plate (200) and a light transmittance enhancement layer (25). The transparent plate includes a light emitting surface (22), and a light incidence surface (21) opposite to the light emitting surface. The light transmittance enhancement layer is provided on the light emitting surface. The light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride. A thickness of the light transmittance enhancement layer is in the range from 58˜69 nanometers. Because of the light transmittance enhancement layer, the light guide plate has enhanced efficiency of utilization of visible light. A backlight system (2) using the light guide plate is also provided.
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Citations
18 Claims
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1. A light guide plate comprising:
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a transparent plate having a light emitting surface and a light incidence surface opposite to the light emitting surface; and
a light transmittance enhancement layer provided on either the light emitting surface or the light incidence surface;
wherein the light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride, and a thickness of the light transmittance enhancement layer is in the range from 58˜
69 nanometers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A backlight system comprising:
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a light guide plate including;
a transparent plate having a light emitting surface and a light incidence surface opposite to the light emitting surface; and
at least one light transmittance enhancement layer provided on at least one of the light emitting surface and the light incidence surface;
wherein said light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride, and a thickness of said light transmittance enhancement layer is in the range from 58˜
69 nanometers; and
a light source located adjacent the light incidence surface of the transparent plate.
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13. A method for manufacturing a light guide member, comprising the steps of:
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providing a light-transmittable base to form a main body of said light guide member; and
forming a layer made of material for enhancement to light transmittance of said base on at least one side of said base. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification