Abstract:
An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of encircling V-shaped protrusions and a lamp-receiving portion. The second surface is opposite to the first surface. The encircling V-shaped protrusions are formed at the first surface and the second surface separately. The lamp-receiving portion is defined in one of the first surface and the second surface. 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. 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. 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:
A direct type backlight module includes a frame, at least an optical sheet, and at least a light guide source. The frame includes a plurality of peripheral sidewalls, at least one holding portion defined in a top of the sidewalls, and an elastic member defined in the holding portion. The optical sheet having a positioning hole corresponding to the elastic member is fixed in the frame by the elastic member being mounted into the positioning hole thereby pushing an inner surface of the positioning hole towards an outer area of the optical sheet. The light source is disposed under the optical sheet. The optical sheet may be fixed on the frame tightly, and may avoid being deformed effectively due to a stretching force produced by the elastic member.
Abstract:
A backlight assembly (200) for liquid crystal display includes a plurality of lamps (201), a printed circuit board (203), and a plurality of inverters (202). The lamps are substantially parallel to each other, and each lamp includes two ends. Each end includes an electrode (211). The printed circuit board is disposed at a side of the backlight assembly at corresponding ends of the lamps, for electrically connecting with some or all of the electrodes. The inverter is fixed on the printed circuit board and cooperating with the printed circuit board to provide voltage to drive the lamps. With this configuration, the printed circuit boards and the inverters are arranged at a side of the lamps. Then, the thickness of the backlight assembly is effectively reduced. Therefore, an LCD that employs the backlight assembly can be corresponding thin.
Abstract:
An LED lighting device includes a lampshade, a plurality of LED light sources and a light guiding member. The light guiding member is arranged inside the lampshade, and includes a plurality of plates each having a connecting end, wherein the connecting ends of the plurality of plates are connected together. Each plate includes two surfaces, one or two of which includes a plurality of accentuated portions, and one of the plates defines a light incident surface opposing the LED light sources. After entering the light guiding member from the light incident surface, the light from the LED light sources is reflected between opposite surfaces of each plate of the light guiding member. Light reaching the accentuated portions is diffused and exits the light guiding member, to be finally transmitted outside through the lampshade.
Abstract:
An optical plate includes a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated, arc-shaped depressions. The second surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.
Abstract:
An optical plate includes a light output surface and a bottom surface opposite to the light output surface. The light output surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.
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 enclosing V-shaped protrusions, a plurality of microstructures and a lamp-receiving portion. The light output surface and the bottom surface are on opposite sides of the optical plate. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. Each microstructure has circular cross-section taken along a plane parallel to its base surface thereof, a diameter of the circular cross-section decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in at least one of the light output surface and the bottom surface. A backlight module using the present 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.