Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of semi-spherical depressions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of conical frustum-shaped depressions (231) defined at the outer surface. The first transparent, the light diffusion layer, and the second transparent are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer between the first and second transparent layers. The first transparent layer, the light diffusion layer, and the second transparent layer are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The first transparent layer defines a plurality of conical frustum protrusions protruding out from an outer surface distalmost from the second transparent layer. The second transparent layer defines a plurality of conical frustum depressions at an outer surface thereof distalmost from the first transparent layer.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and a plurality of spherical protrusions (213) protruding out from the light output surface. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (221) and a plurality of diffusion particles (223) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.

Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of first conical frustum protrusions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of second conical frustum protrusions (231) formed at the outer surface. The first transparent layer, the light diffusion layer, and the second transparent layer are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first transparent layer, and the second transparent layer are integrally formed. The light diffusion layer includes a transparent matrix resin, and diffusion particles dispersed in the transparent matrix resin. The first transparent layer defines first spherical depressions at an outer surface thereof that is farthest from the second transparent layer. The second transparent layer defines second spherical depressions at an outer surface thereof that is farthest from the first transparent layer. A backlight module using the optical plate is also provided.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer between the first and second transparent layers. The above-described three layers are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The first transparent layer defines micro depressions protruding from an outer surface thereof. Each micro depression has at least three side surfaces connected to each other, and a transverse width of each side surface increases along a direction away from the light diffusion layer. The second transparent layer defines conical frustum protrusions at an outer surface thereof.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. The first transparent layer defines a plurality of V-shaped protrusions at an outer surface thereof distalmost from the second transparent layer. The second transparent layer has a plurality of conical frustum protrusions at an outer surface thereof distalmost from the first transparent layer.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. The first transparent layer includes a plurality of first V-shaped protrusions at an outer surface distalmost from the second transparent layer. The second transparent layer includes a plurality of second V-shaped protrusions at an outer surface distalmost from the first transparent layer. A direct type backlight module using the optical plate is also provided.

Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of semi-spherical protrusions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of conical frustum-shaped depressions (231) defined at the outer surface. The first transparent, the light diffusion layer, and the second transparent are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of semi-spherical protrusions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of semi-spherical depressions (231) defined at the outer surface. The first transparent, the light diffusion layer, and the second transparent are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. The first transparent layer includes a plurality of elongated V-shaped protrusions at an outer surface thereof that is distalmost from the second transparent layer. The second transparent layer includes a plurality of micro-recesses at an outer surface thereof that is distalmost from the first transparent layer. Each micro-recess is a frustum of an inverted pyramid in shape. A direct type backlight module using the optical plate is also provided.

Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of spherical protrusions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of conical frustum protrusions (231) protruding out from the outer surface. The first transparent, the light diffusion layer, and the second transparent are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. The first transparent layer includes a plurality of V-shaped protrusions at an outer surface distalmost from the second transparent layer. The second transparent layer includes a plurality of spherical protrusions at an outer surface distalmost from the first transparent layer.

Abstract: An exemplary optical plate (20) includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of spherical protrusions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of micro protrusions (231) protruding out from the outer surface. The light diffusion layer is integrally formed with the first and second transparent layers and is between the first and second transparent layers. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin. An exemplary backlight module (200) employing the optical plate is also provided.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. Both the first and second transparent layers define a plurality of spherical protrusions on an outer surface thereof distalmost from the light diffusion layer respectively. A method for making the optical plate is also provided. In addition, a direct type backlight module using the optical plate is also provided.

Abstract: An optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer between the first and second transparent layers. The first transparent layer, the light diffusion layer, and the second transparent layer are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The first transparent layer defines a plurality of V-shaped protrusions protruding out from an outer surface distalmost from the first transparent layer. The second transparent layer defines a plurality of conical frustum depressions at an outer surface thereof distalmost from the first transparent layer.

Abstract: An optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer between the first and second transparent layers. The above-described three layers are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The first transparent layer defines many of micro protrusions protruding from an outer surface thereof. Each micro protrusion has at least three flat side surfaces connected to each other, and a transverse width of each side surface decreases along a direction away from the light diffusion layer. The second transparent layer defines many of V-shaped protrusions at an outer surface thereof.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) on an opposite side of the transparent layer to the light input interface, and a plurality of recesses (213) defined at the light output surface. Each of the recesses has a flat innermost end and is conical frustum-shaped. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) on an opposite side of the transparent layer to the light input interface, and a plurality of protrusions (213) formed at the light output surface. Each of the protrusions is conical frustum-shaped. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and plural protrusions (213) formed at the light output surface. Each of the protrusions includes two conical frustums one adjoining another. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (221) and plural diffusion particles (222) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.