Abstract: An exemplary optical plate has a first surface and an opposite second surface. A plurality of parallel elongated arc-shaped groove is defined on the first surface. The second surface of the transparent main body defines a plurality of parallel elongated arc-shaped protrusions and a plurality of parallel elongated V-shaped protrusions. Each arc-shaped protrusions intersects with each elongated V-shaped protrusion. An extending direction of each elongated arc-shaped protrusion intersects with an extending direction of each elongated arc-shaped groove.

Abstract: An exemplary optical plate has a first surface and an opposite second surface. A plurality of elongated V-shaped protrusions and a plurality of elongated arc-shaped protrusions are arranged in an alternating manner. Each elongated V-shaped protrusion is substantially parallel to each arc-shaped protrusion. A plurality of elongated arc-shaped grooves is defined on the second surface. An extending direction of each elongated arc-shaped protrusion intersects with an extending direction of each elongated arc-shaped groove. A backlight module using the optical plate is also provided.

Abstract: An optical plate includes a first surface, a second surface opposite to the first surface, a plurality of substantially parallel arc-shaped depressions defined in the first surface and a plurality of elongated arc-shaped protrusions and elongated V-shaped protrusions protruding out from the second surface. The elongated arc-shaped protrusions and the elongated V-shaped protrusions are substantially parallel to the arc-shaped depressions and arranged in an alternating manner. A backlight module using the optical plate is also provided.

Abstract: An optical plate includes a first surface, a second surface opposite to the first surface, and a plurality of elongated arc-shaped protrusions and elongated V-shaped protrusions protruding from the second surface. The first surface is substantially flat, and the elongated arc-shaped protrusions and the elongated V-shaped protrusions are substantially parallel to each other and arranged in an alternating manner. A backlight module using the optical plate is also provided.

Abstract: An optical plate has a first surface and an opposite second surface. The first surface is substantially planar. A plurality of substantially parallel elongated V-shaped protrusions and a plurality of substantially parallel elongated arc-shaped protrusions are formed on the second surface of the transparent main body. Each elongated arc-shaped protrusion intersects with each elongated V-shaped protrusion. A backlight module using the optical plate is also provided.

Abstract: An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer includes a light input interface and a light output surface opposite to the light input interface. A plurality of micro-protrusions formed on the light output surface. The micro-protrusions are arranged along a plurality of separate, circular arcs. Each micro-protrusion has four 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 light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer, and free of air or gas pockets trapped in an interface therebetween. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin.

Abstract: An exemplary prism sheet (20) includes a transparent main body. The main body includes a first surface (201), a second surface (202) opposite to the first surface, a plurality of first micro-depressions (203) defined in the first surface, and a plurality of second micro-depressions (204) defined in the second surface. Each of the first micro-depressions is conical frustum-shaped. Each of the first micro-depressions has four inner side surfaces connected to each other. A transverse width of each inner side surface of the first micro-depressions progressively decreases with increasing distance from its bottom surface that are coplanar with one of the first surface of the transparent main body. A backlight module (200) using the present prism sheet is also provided.

Abstract: An optical plate includes a first surface and a second surface opposite the first surface. The first surface defines a plurality of substantially parallel elongated arc-shaped grooves therein. A plurality of substantially parallel elongated V-shaped ridges is formed on the second surface. An extending direction of the elongated arc-shaped grooves is substantially parallel to an extending direction of the elongated V-shaped ridges.

Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of spherical protrusions, a diffusion layer, and at least one lamp-receiving portion. The bottom surface is opposite to the light output surface. The diffusion layer is formed on the light output surface. The spherical protrusions are formed at the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.

Abstract: A diffusion plate formed includes a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated arc-shaped grooves, and the second surface is flat.

Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface and a second surface. The first surface is opposite to the second surface. A plurality of elongated arc-shaped depressions are defined in the first surface. A plurality of micro-depressions are defined in the second surface. Each micro-depression is defined by at least three connecting sidewalls. A transverse width of each sidewall of each micro-depression progressively decreases with increasing distance from the second surface. A backlight module using the present prism sheet is also provided.

Abstract: An exemplary optical plate includes a first surface and a second surface opposite the first surface. The first surface defines a plurality of substantially parallel elongated arc-shaped grooves therein. A plurality of substantially parallel elongated arc-shaped protrusions is formed on the second surface. An extending direction of the elongated arc-shaped grooves are substantially parallel to an extending direction of the elongated arc-shaped protrusions.

Abstract: An exemplary optical plate (20) includes a transparent plate (21) and a light diffusion layer (22). The transparent plate includes a light output surface (212), a light input surface (211) opposite to the light output surface, and a plurality of spot-shaped recessed portions (213) formed on the light input surface. The light diffusion layer is coated on the spot-shaped recessed portions. A backlight module using the optical plate is also provided, a plurality of point light sources of which being positioned in one-to-one correspondence with the spot-shaped recessed portions. The backlight module using the optical plate can have a thin body with a good optical performance.

Abstract: An exemplary optical plate includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface of transparent main body defines a plurality of elongated arc-shaped grooves. The second surface defines a plurality of the elongated arc-shaped protrusions. An extending direction of the elongated arc-shaped grooves intersects with an extending direction of the elongated arc-shaped protrusions.

Abstract: An exemplary holding frame (20) is for fixing lamp pairs (31) having electrode holders (311) and lamps wires (312), and includes a top surface (201), a bottom surface (202), an inner surface (203), and an outer surface (204). The top surface defines plural electrode receiving openings (2011). The bottom surface defines plural wiring openings (2021). The outer surface defines plural electrode groove pairs (2041), and each electrode groove of each of the electrode groove pairs communicates between a respective one of the wiring openings and a respective one of the electrode receiving openings. The electrode groove pairs are configured for receiving the electrode holders of the lamp pairs. The bottom surface defines plural wiring channels (2022), and each wiring channel communicates between the wiring openings at a corresponding electrode groove pair. The wiring channels configured for receiving selected portions of the lamps wires.

Abstract: An exemplary direct type backlight module (30) includes a housing (31), a reflective sheet (34), a central supporting member (36), and a plurality of light sources (33). The housing includes a base plate (311) and a periphery side plate (313) extending from the base plate. The supporting member is disposed on the base plate and supports the reflective sheet. The reflective sheet defining a plurality of through holes. The light sources are arranged on or above the base plate. Each of the light sources includes a light emitting portion (331) extending through a corresponding one of the through holes of the reflective sheet.

Abstract: A light source module includes at least a light source and a housing. The housing includes a base having a slanted reflective surface, a plurality of sidewalls extending out of a peripheral of the base cooperatively defining an opening with the base, the sidewall aligned with a trough of the slanted reflective surface having an inner surface and an outer surface opposite to the inner surface, and a plurality of fin structures formed on the outer surface of the sidewall. The light source is fixed on the inner surface of the sidewall. Light rays emitted from the light source being reflected at the slanted reflective surface toward the opening. A backlight system using the light source module is also provided. The present backlight system has a good heat dissipation capability due to an employment of the present light source module, and can be configured to be a thin body.

Abstract: An exemplary prism sheet includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the transparent main body. The first surface defines a plurality of micro-depressions. Each micro-depression forms four inner sidewalls connected with each other. A transverse width of each inner sidewall progressively decreases with increasing distance from the first surface. The second surface defines a plurality of parallelogram microstructures. Each parallelogram microstructure defines four adjacent triangular pyramid depressions.

Abstract: An exemplary prism sheet includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface of transparent main body is flat. The second surface defines a plurality of parallelogram microstructures. Each parallelogram microstructure defines four adjacent triangular pyramid depressions.

Abstract: An exemplary prism sheet includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the transparent main body. The first surface defines a plurality of a plurality of elongated arc-shaped grooves. The second surface defines a plurality of parallelogram microstructures. Each parallelogram microstructure defines four adjacent triangular pyramid depressions.