An optical component includes a light guide board. The light guide board can include an incident surface, an underside, and an exit surface. The incident surface is connected to the underside and the exit surface, respectively. The underside is parallel to the exit surface. Further, the exit surface includes a prism structure for refracting light in the light guide board.

The present disclosure discloses a backlight module and a display apparatus. A microprism film layer is further arranged on a light emitting side of a light guide plate, and the microprism film layer is located in a range of a preset distance by which the light guide plate extends from a side close to a light source to a side away from the light source; and the microprism film layer includes a plurality of first microprism structures, and the first microprism structures are configured to make an incident angle of light at a first interface when entering the first microprism structures greater than an emitting angle of the light at the first interface when exiting from the first microprism structures when the light in the light guide plate enters the first microprism structures from the light guide plate and then enters the light guide plate from the first microprism structures.

Laser backlight source for a narrow-frame edge-lit type liquid crystal display. The laser backlight includes visible laser groups, beam shaping devices, reflectors and a liquid crystal display light guide plate. After being reflected by reflectors to change a laser propagation direction by 180 degrees, laser beams emitted by visible lasers are incident on the liquid crystal display light guide plate through a light-permeable surface. When being incident on the lateral light-permeable surface of the liquid crystal display light guide plate via the reflectors, the visible laser beams emitted by adjacent visible laser groups generate light overlap larger than 10% of the area of each light spot. A sum of lengths of laser spots of the visible laser groups at a same waveband on the lateral light-permeable surface of the liquid crystal display light guide plate is greater than or equal to 0.65 times of the length of the light-permeable surface.

An electronic device is disclosed, including: a glass plate including a first region and a second region extending from the first region to form a curved surface, wherein at least one predetermined first pattern is formed within at least a portion of the first region, a light emitter disposed adjacent to the second region of the glass plate and configured to emit light from the second region along the first region, a molded pattern layer disposed on the glass plate, the molded pattern layer including second patterns oriented as to face the glass plate, and a support film layer disposed on the molded pattern layer and configured to guide a path of the emitted light from the light emitter to an interior of the molded pattern layer.

The light emitting sheet excellent in light guiding performance according to an embodiment of the present disclosure may include: a base film; and a light guide pattern portion in which a pattern set on a surface of the base film is repeatedly formed, wherein the light guide pattern portion has a hexagonal shape.

In some embodiments, a display device includes one or more waveguides having a vapor deposited light absorbing film on edges of the waveguide to mitigate ghost images. In some embodiments, the film is formed directly on the edge of the waveguide by a vapor deposition, such as an evaporative deposition process. In some embodiments, the light absorbing films may comprise carbon, for example carbon in the form of one or more allotropes of carbon, such as fullerenes, or black silicon.

An optical waveguide combiner includes an optical waveguide substrate and an optical input region. The optical input region includes an optical input diffractive grating integrated in, or disposed on, the optical waveguide substrate. An optical output region includes an optical output diffractive grating integrated in, or disposed on, the optical waveguide substrate, At least one non-diffractive region includes at least one optical non-diffractive array of nanostructures, wherein said at least one optical non-diffractive array of nanostructures is integrated in, or disposed on, the object side of said optical waveguide substrate and at least partially surrounds at least said optical output grating; wherein the external visible reflectance of said at least one non-diffractive array of nanostructures is substantially equal to the external visible reflectance of said optical output grating.

The present disclosure provides a keycap, including: a light-guiding microstructure layer made of a first material, the light-guiding microstructure layer including a base layer and a plurality of microstructures disposed on a lower surface of the base layer; and a light-transmitting layer disposed over the light-guiding microstructure layer and in contact with the base layer, the light-transmitting layer being made of a second material different from the first material. The present disclosure further provides a method of manufacturing the above-mentioned keycap and a key structure including the above-mentioned keycap.

Provided is a shelf lighting device. A light guide plate is disposed below a shelf to which external contacts are made, includes a first surface facing the shelf, a second surface opposite the first surface, and third surfaces extending between edges of the first and second surfaces to connect the first and second surfaces, is formed from a first refractive index material, and guides light. An area in which light is guided is separated from an area in which external contacts are made, such that light is not extracted directly from a stained portion, thereby reducing sensitivity to surface contamination.

A display backlight unit is disclosed including a glass substrate with a first major surface and a second major surface opposite the first major surface, the first major surface coated with at least one of 3-mercaptopropyl trimethoxysilane, aminopropyl triethoxysilane, or silanated PMMA, and a plurality of PMMA-containing light extraction dots deposited on the coated first major surface.