PLANAR LIGHT SOURCE MODULE AND OPTICAL FILM
First Claim
1. A planar light source module, comprising:
- a light guide plate (LGP) having a side light-incident surface, a bottom surface, and a light-emergence surface opposite to the bottom surface;
a light source disposed adjacent to the side light-incident surface and suitable for providing a light beam, wherein the light beam enters the LGP from the side light-incident surface and leaves the LGP from the light-emergence surface in an emergence angle θ
1, wherein the emergence angle θ
1≧
70 degrees;
an optical film disposed above the light-emergence surface of the LGP to collimate the light beam from the LGP, and the optical film comprising;
a prism layer module comprising a plurality of prism layers, and each of the prism layers comprising a plurality of micro-prisms protruding towards a direction apart from the LGP, wherein extending directions of the micro-prisms are substantially perpendicular to a chief propagation direction of the light beam in the LGP;
a bonding layer module comprising at least one bonding layer, wherein the prism layers are alternately stacked with the at least one bonding layer, and the at least one bonding layer is bonded with two of the prism layers adjacent thereto, and a refractive index of the prism layers is greater than a refractive index of the at least one bonding layer; and
a reflector disposed under the bottom surface of the LGP.
1 Assignment
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Accused Products
Abstract
A planar light source module including a light guide plate (LGP), a light source, an optical film, and a reflector is provided. The light source for emitting a light beam is disposed adjacent to the side light-incident surface, wherein the light beam enters the LGP from a side light-incident surface and leaves the LGP from a light-emergence surface in an emergence angle θ1, θ1≧70 degrees. The optical film is disposed above the LGP to collimate the light beam from the LGP. The optical film includes a prism layer module and a bonding layer module stacked alternately. The prism layer module comprises prism layers and each prism layer includes micro-prisms. The bonding layer module comprises at least one bonding layer bonded with two prism layers adjacent thereto. The refraction index of the prism layers is greater than that of the bonding layer. The reflector is disposed under the bottom surface.
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Citations
25 Claims
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1. A planar light source module, comprising:
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a light guide plate (LGP) having a side light-incident surface, a bottom surface, and a light-emergence surface opposite to the bottom surface; a light source disposed adjacent to the side light-incident surface and suitable for providing a light beam, wherein the light beam enters the LGP from the side light-incident surface and leaves the LGP from the light-emergence surface in an emergence angle θ
1, wherein the emergence angle θ
1≧
70 degrees;an optical film disposed above the light-emergence surface of the LGP to collimate the light beam from the LGP, and the optical film comprising; a prism layer module comprising a plurality of prism layers, and each of the prism layers comprising a plurality of micro-prisms protruding towards a direction apart from the LGP, wherein extending directions of the micro-prisms are substantially perpendicular to a chief propagation direction of the light beam in the LGP; a bonding layer module comprising at least one bonding layer, wherein the prism layers are alternately stacked with the at least one bonding layer, and the at least one bonding layer is bonded with two of the prism layers adjacent thereto, and a refractive index of the prism layers is greater than a refractive index of the at least one bonding layer; and a reflector disposed under the bottom surface of the LGP. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An optical film for collimating a light beam with an incident angle greater than 70 degrees, comprising:
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a prism layer module comprising a plurality of prism layers, and each of the prism layers comprising a plurality of micro-prisms; and a bonding layer module comprising at least one bonding layer, wherein the prism layers are alternately stacked with the at least one bonding layer, the at least one bonding layer is bonded with two of the prism layers adjacent thereto, and a refractive index of the prism layers is greater than a refractive index of the at least one bonding layer. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification