A backlight includes a substrate, a plurality of light sources, a reflective layer, a light guide plate, a pattern of light extractors, a plurality of patterned reflectors, and a diffusive layer. The plurality of light sources are proximate the substrate. The reflective layer is on the substrate. The light guide plate is proximate the plurality of light sources. The pattern of light extractors is on the light guide plate. The plurality of patterned reflectors are on the light guide plate. Each patterned reflector is aligned with a corresponding light source. The diffusive layer is on the light guide plate.

A backlight unit including a frame; a substrate located on one side of the frame; a plurality of light assemblies mounted on the substrate; a light guide plate configured to guide light emitted by the light assembly; and a reflection sheet located between the light guide plate and the frame and configured to reflect light emitted by the plurality of light assemblies. In addition, the light guide plate includes a first block including a plurality of light guide areas configured to emit light emitted by a corresponding first set of light assemblies; and a second block including a plurality of light guide areas configured to emit light emitted by a corresponding second set of light assemblies.

Disclosed herein are a backlight unit and a display device using the same. In an embodiment, the backlight unit includes a substrate, at least one light source on the substrate, a lenses placed over the light source, a reflection sheet in which at least one through hole corresponding to the lens is formed, and a reflection ring comprising an opening portion corresponding to the at least one light source, and placed between the lens and the substrate. In accordance with an embodiment of the present invention, luminance uniformity of the backlight unit can be improved because the reflection ring surrounding the light source is included.

A light-emitting module includes a light guide member including a first light guide portion including a first upper surface, a first lower surface, a first lateral surface, a first extending portion facing the first lateral surface and extending continuously from a portion of the first lateral surface, and a first hole portion, and a second light guide portion including a second upper surface, a second lower surface, a second lateral surface, a second extending portion facing the second lateral surface and extending continuously from a portion of the second lateral surface, and a second hole portion; a light source unit including a first light source disposed in the first hole portion, and a second light source disposed in the second hole portion; and a first light-reflective member covering at least a portion of the first lateral surface facing the first extending portion and at least a portion of the first extending portion facing the first lateral surface, in which the first extending portion faces the second extending portion.

A backlight module and a display device, including a back panel, a first middle frame, and a film layer. The film layer includes a first side, a second side, a third side, a fourth side. Hanging holes are at edges of the film layer. Hanging elements corresponding to hanging holes are on the back panel. The hanging element is connected to the film layer via hanging hole. Among hanging holes and hanging elements on the first side, from the third side to the fourth side, first gaps between sidewalls of hanging elements away from the fourth side and sidewalls of hanging holes away from the fourth side increase; among hanging hole and hanging element on the third side, from the first side to the second side, a first gap between sidewall of hanging element away from the second side and sidewall of hanging hole away from the second side increases.

A direct-type backlight liquid crystal display device is provided, which includes a frame including a main frame, a bottom plate; a liquid crystal display panel, on a top surface of the main frame and parallel to the bottom plate, the liquid crystal display panel includes an array substrate, a color film substrate, a liquid crystal layer and a frame sealant, a pixel unit on the color film substrate includes a sub pixel, the sub pixel on a side of the color film substrate along a first direction parallel to the color film substrate is partially blocked and covered by a black matrix, a backlight unit including a light emitting element and a light homogenizing element; a display control unit, at a lateral end surface of the liquid crystal display panel and electrically connected with the liquid crystal display panel at the lateral end surface of the liquid crystal display panel.

A method of manufacturing a planar light source includes: providing a wiring substrate; locating a light guide plate on a first principal face of the wiring substrate, wherein the light guide plate includes a plurality of unit regions arranged in one dimension or two dimensions, and a plurality of through holes that are open at the a principal face and a second principal face of the light guide plate, wherein at least one of the through holes is located in the unit regions; locating light sources in the through holes in the unit regions on the first principal face of the wiring substrate; locating a first light transmissive member in a first of the through holes; and locating a second light transmissive member in the first through hole.

A display device includes a display panel; a frame at a rear of the display panel, the frame including a bottom and a sidewall extending from the bottom; a substrate on the frame; a light source mounted on the substrate; a lens mounted on the light source in which the lens includes an upper surface, a lower surface, and a side surface connected with the upper surface and the lower surface; a reflecting layer between the substrate and the lens; and a plurality of dots formed on a top surface of the reflecting layer. Further, the lower surface of the lens includes a groove in which the light source is inserted, and the plurality of dots is arranged around the light source and only in an area under the lens between the side surface and the groove.

A backlight assembly and its formation method, and a display apparatus are provided in the present disclosure. The formation method includes a circuit board; a plurality of light-emitting elements, disposed at a side of the circuit board; and a light guide element, configured to transmit light emitted from the plurality of light-emitting elements to a display element according to a preset light-guiding path. The backlight assembly transmits the light emitted from the light-emitting elements to the display element according to the preset light-guiding path through the light guide element, which improves the utilization rate of the light emitted from the light-emitting elements and emits higher brightness backlight through relatively low energy consumption.

A head up display system presents a virtual image to a human driver of a motor vehicle. A picture generation unit includes a printed circuit board having at least one light emitting device emitting light from a surface of the printed circuit board. The surface has an optically reflective coating. A liquid crystal display receives the emitted light and reflects a portion of the received emitted light back to the printed circuit board. The optically reflective coating of the printed circuit board reflects the light reflected by the liquid crystal display back to the liquid crystal display. At least one mirror reflects light passed by the liquid crystal display toward a windshield of the motor vehicle such that the light is reflected by the windshield and is visible to the human driver as the virtual image.