An electronic device may have a display and other optical components such as optical sensors. The display and other components may be overlapped by chemically strengthened glass coherent fiber bundles. The surfaces of a coherent fiber bundle may include ion-exchanged glass that places theses surfaces under compressive stress. In some configurations, the coherent fiber bundle is symmetrically stressed and has equal amounts of compressive stress on opposing surfaces. In other configurations, the coherent fiber bundle is asymmetrically stressed and has more compressive stress on one surface than the other. The coherent fiber bundle may have areas with curved cross-sectional profiles, planar areas, and/or areas with compound curvature. Sensor windows may be formed in the coherent fiber bundle that are surrounded by an opaque area. When overlapping a display, the coherent fiber bundle may serve as a display cover glass layer.

According to one embodiment, a display device includes, a first transparent substrate having a side surface and a main surface, a first alignment film disposed along the main surface, a first transparent layer located between the first transparent substrate and the first alignment film, a second transparent substrate, a pixel electrode electrically connected to a switching element, a liquid crystal layer, and a light-emitting element opposed to the side surface. The first transparent layer overlaps a part of the pixel electrode and has a lower refractive index than the first transparent substrate.

Provided is an optical laminate used for a viewing angle control system, and an image display device, including a light absorption anisotropic layer formed of a liquid crystal composition containing a liquid crystal compound and a dichroic substance, a first adjacent layer in contact with one surface of the light absorption anisotropic layer, and a second adjacent layer in contact with a surface of the light absorption anisotropic layer opposite to the one surface, in which a content of the dichroic substance is 7.0% by mass or greater, an angle θs between a transmittance central axis of the light absorption anisotropic layer and a surface of the light absorption anisotropic layer in a normal direction is in a range of 5° to 60°, and both refractive indices n1 and n2 of the first and second adjacent layers, respectively, are in a range of 1.46 to 1.72.

A light source module includes a light guide plate, a light source, a first color conversion film, at least one optical film and an ink coating. The light guide plate has a first light-emitting surface, a second light-emitting surface opposite to the first light-emitting surface, and a light-incident surface connected between the first light-emitting surface and the second light-emitting surface. The light source is disposed beside the light-incident surface. The first color conversion film is disposed beside the first light-emitting surface. The at least one optical film is disposed beside the light guide plate. The ink coating is disposed on a surface edge or an end surface of at least one of the light guide plate, the first color conversion film, and the at least one optical film, and is configured to allow light to pass therethrough. A display device of the invention is further provided.

An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.

A planar light source includes: a light guide plate including: a first principal face, a second principal face located opposite the first principal face, and a plurality of through holes that are open at the first principal face and the second principal face; a plurality of light sources, wherein at least one of the light sources is located in the through holes of the light guide plate; a wiring substrate on which the plurality of light sources are located; a first light transmissive member located in a first of the through holes so as to cover at least a portion of a lateral face of the at least one light source located in the first through hole; and a second light transmissive member located in the first through hole so as to cover at least an upper face of the first light transmissive member.

A electronic device is provided. The electronic device includes a circuit board, a first light-emitting element and a second light-emitting element disposed on the circuit board along a first direction. The backlight module includes a light guide plate and an adhesive structure between the circuit board and the light guide plate and having a first opening and a second opening. The first and second light-emitting elements are disposed in the first and second openings respectively. A portion of the adhesive structure disposed between the first and second openings includes a first part and a second part, the first part is disposed between the first and second light-emitting elements, and the second part is connected with the first part and extends toward the light guide plate. A second maximum width of the second part is greater than a first maximum width of the first part along the first direction.

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.

A privacy filter includes a plurality of micro louvers. Each micro louver of the plurality of micro louvers is a same size. Each micro louver of the plurality of micro louvers are laid flat on top of each other to form the privacy filter. The plurality of micro louvers includes a first micro louver and a set of micro louvers. The first micro louver is in a fixed position. The set of micro louvers has a first piezo element at a first end of each micro louver and a second piezo element at a second end of each micro louver. The first end is opposite the second end.

A backlight includes an extended light source adapted to emit light. A reflective polarizer is disposed on the extended light source, such that for substantially normally incident light and for at least a first wavelength in a range from about 420 nanometer (nm) to about 650 nm, the reflective polarizer reflects at least 60% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state. A first prismatic film is disposed between the extended light source and the reflective polarizer. A retarder layer is disposed between the reflective polarizer and the first prismatic film, such that for substantially normally incident light at a wavelength of about 550 nm, the retarder layer has a retardance nW, where n is an integer ≥1 and W is a wavelength between about 160 nm and about 300 nm.