The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.

A display device is provided. The display device comprises a first substrate, a second substrate facing the first substrate, a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns, a light scattering layer disposed between the first polarizing layer and the second substrate, and color filter layers disposed between the light scattering layer and the second substrate.

Disclosed is a backlight unit using a mini light-emitting diode (LED) or a micro LED as a light source according to various embodiments of the present invention. The backlight unit may comprise: a color conversion sheet for converting the color of light emitted from the mini LED or the micro LED; a first diffusion lens sheet disposed on one side of the color conversion sheet and having a plurality of first lenses having a triangular pyramid shape formed to be arranged in a first direction on one surface thereof; and a second diffusion lens sheet disposed on one side of the first diffusion lens sheet, and having a plurality of second lenses having a triangular pyramid shape formed to be arranged in a second direction on one surface thereof.

The present application discloses a backlight module and a display device. The backlight module includes a plurality of first regions and a plurality of second regions arranged adjacently; the backlight module includes a substrate, including a light-transmitting region, in which the light-transmitting region is at least partially located in the second regions; a plurality of first light-emitting elements, arranged at a side of the substrate, in which the first light-emitting elements are located in the first regions, and the first light-emitting elements emit light along a direction perpendicular to a plane where the substrate is located; a light-guiding plate, arranged at a side of the substrate away from the first light-emitting elements, in which the light-guiding plate includes a plurality of light-supplementing portions located in the second regions; and at least one second light-emitting element, arranged at a side face of the light-guiding plate.

A polarizing plate and an optical display including the same are provided. A polarizing plate includes: a polarizing film; a first base layer; and a pattern layer, the first base layer and the pattern layer being sequentially arranged on a light exit surface of the polarizing film, and the pattern layer includes a first layer and a second layer sequentially arranged on the first base layer, the first layer having a higher index of refraction than the second layer, and the first layer includes a patterned portion at at least a portion thereof facing the second layer, the patterned portion including at least two optical patterns and a flat section between optical patterns of the at least two optical patterns that are adjacent to each other.

Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.

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 backlight module. The backlight module includes a backplane, a backlight light source, a first light conversion layer, and a first light leveling layer. The backplane includes a receiving space, and the backlight light source is fixed on a first inner surface of the receiving space. The first light conversion layer is positioned on the light emitting side of the backlight light source, and there is a first distance between the first light conversion layer and a second inner surface of the receiving space. The first inner surface and the second inner surface intersect to form a right angle. The first light leveling layer is positioned on the side of the first light conversion layer away from an outer surface of the backlight light source. A second light conversion layer is laid on a first target area of the first light leveling layer, and a projection area of the second light conversion layer on the first inner surface covers a projection area of a first area of the first light conversion layer on the first inner surface. A light conversion function of a second area of the first light conversion layer is stronger than the light conversion function of the first area, and the second area includes an area of the first light conversion layer that is different from the first area.

In an image display method, a backlight is divided into first areas in a first direction. Each of the first areas includes light-emitting regions. A liquid crystal panel is divided into second areas in the first direction. In the method, a first operation to cause light to be emitted from the light-emitting regions at respective intensity in accordance with frame image data is performed sequentially with respect to each of the first areas. Further, a second operation to apply voltages to the pixels at respective levels in accordance with the frame image data is performed sequentially with respect to each of the second areas. A timing at which the first operation with respect to each of the first areas is started is delayed from a timing at which the second operation with respect to a corresponding one of the second areas is started by a predetermined interval.

A surface light source device includes a plurality of light emitting devices each including at least one light emitting element and a light flux controlling member for controlling a distribution of light emitted from the at least one light emitting element; and an optical sheet including a light diffusion member which includes optically transparent particles and which is for transmitting light emitted from the plurality of light emitting devices while diffusing the light. When the number average particle diameter of the particles is A (μm) and the proportion of particles in the light diffusion member is B (wt %), the surface light source device satisfies the formula 0.4≤A≤10 and the formula 0.4647A+0.2169≤B≤2.3119A+2.5103.