Abstract: A prism sheet including a transparent substrate, a plurality of prism rods and at least one optical grating structure is provided. The transparent substrate has a first surface and a second surface opposite to the first surface. The prism rods are disposed on the first surface, wherein each of the prism rods extends along a first direction, and the prism rods are arranged along a second direction. The optical grating structure is disposed on the first surface and located between two adjacent ones of the prism rods, wherein the optical grating structure extends along the first direction. In addition, a backlight module using the above-mentioned prism sheet is also provided.

Abstract: A backlight module includes at least one light emitting element capable of emitting a light beam and a light diffusion brightness enhancement film. The brightness enhancement film includes a light transmissive substrate, a plurality of prism rods, and at least one light diffusion structure. The light transmissive substrate has a first and a second surfaces opposite to each other. The first and the second surfaces are disposed in a transmission path of the light beam. The first surface is disposed between the light emitting element and the second surface. Each of the prism rod extends along a first direction. The prism rods are disposed on the first surface and are arranged along a second direction. The light diffusion structure is disposed on the first surface and between the two adjacent prism rods, and has a rough surface. The light diffusion structure and the rough surface extend along the first direction.

Abstract: A prism sheet including a transparent substrate, a plurality of prism rods and at least one optical grating structure is provided. The transparent substrate has a first surface and a second surface opposite to the first surface. The prism rods are disposed on the first surface, wherein each of the prism rods extends along a first direction, and the prism rods are arranged along a second direction. The optical grating structure is disposed on the first surface and located between two adjacent ones of the prism rods, wherein the optical grating structure extends along the first direction. In addition, a backlight module using the above-mentioned prism sheet is also provided.

Abstract: A side-type backlight module including a lampshade, a light guide plate (LGP), a plurality of point light sources and a reflection structure is provided. The LGP has a light incident surface disposed at an opening of the lampshade. The point light sources are disposed between the lampshade and the LGP. The reflection structure is disposed between the LGP and the lampshade, and has first light outlets, at least a second light outlet, sinks, first reflecting elements and at least a second reflecting element. The sinks are disposed corresponding to the first light outlets. The point light sources are disposed in the sinks. The second light outlet is located between and adjacent to the first light outlets. The first reflecting elements are disposed at the junctions of each first light outlet and the second light outlet. The second reflecting element is disposed corresponding to the second light outlet.

Abstract: A side-emitting backlight module includes a light guide plate and a plurality of point light sources. The light guide plate has a light incident end face. The point light sources are arranged as a first row and a second row. Each of the point light sources has a light emitting face. The first row is disposed between the second row and the light guide plate. Each point light source of the first row is staggered with respect to each point light source of the second row, so that each light emitting face of the point light sources fronts the light incident end face of the light guide plate.

Abstract: A light guide plate and a side-emitting backlight module having the same are disclosed. The light guide plate includes a transparent substrate, a plurality of prisms and a plurality of condensing lenses. The prisms are arranged side by side on one surface of the transparent substrate. The condensing lenses are disposed between two adjacent prisms, and distributed from sparsely to densely along a direction of a crest line of each of the prisms.

Abstract: A backlight module including a light guide plate, a light source and a transparent elastomer is provided. The light guide plate has a first light emitting surface, a bottom surface opposite to the first light emitting surface and at least a light incident surface contacting the first light emitting surface and the bottom surface. The light source is disposed adjacent to the light incident surface and includes a circuit board and a plurality of light emitting diode devices. Each of the light emitting diode devices is capable of emitting light passing through the light incident surface. The light emitting diode devices are electrically connected to the circuit board. The transparent elastomer is disposed between the light incident surface and each of the light emitting diode devices.

Abstract: A backlight module applied to a display and including a linear light source and a light guide plate (LGP) is provided. The LGP includes a light emitting surface, a bottom surface, a light incident surface, a first side surface, a second side surface and a microstructure. The bottom surface is opposite to the light emitting surface. The light incident surface is in contact with the light emitting surface and the bottom surface. The linear light source is disposed adjacent to the light incident surface. The first side surface is opposite to the light incident surface and in contact with the light emitting surface and the bottom surface. The second side surface is in contact with the light emitting surface, the bottom surface, the light incident surface and the first side surface. The microstructure is formed on the second side surface and adjacent to the light incident surface.

Abstract: A back light module having a light-guiding plate and a linear light source is provided. The light-guiding plate includes a light-guiding body with a light incident surface formed thereon and an optical-path-adjusting groove disposed on the light incident surface of the light-guiding body. The linear light source is disposed beside the light incident surface. The linear light source is suitable for providing light beams to the light incident surface. Furthermore, the optical path of the light beam is adjusted by the optical-path-adjusting groove before the light entering through the light incident surface into the light-guiding body. As a result, the back light module provides illumination with a higher degree of uniformity.

Abstract: A film attaching method for attaching a film on a substrate is provided. The film attaching method includes the following steps. First, a film is disposed on the substrate. Then, gas between the film and the substrate is driven out. Ultimately, an airtight joint is formed between the edge of the film and the edge of the substrate so that the film is attached to the substrate. The film attaching method is applied to the screen of a rear projection television to provide the rear projection television with good optical characteristics.

Abstract: A backlight apparatus includes a guiding element and a light source disposed at one side of the guiding element. There is a plurality of reflective patterns at the bottom surface of the guiding element. Each reflective pattern is composed of at least one concavity and at least one convexity. The concavity is disposed at the rim around the convexity. As the light source emits light to the guiding element, the reflective area is increased by the concavity of the reflective pattern for increasing the reflecting effect and for distributing the brightness more uniformly, and thereby higher brightness and uniformity can be achieved.