A display device includes a transparent light guide plate having an incident surface to display a plurality of patterns viewable in different directions and at least one light source facing a part of the incident surface. The light guide plate includes, on a first surface of the light guide plate, a plurality of prisms arranged along each of the plurality of patterns. The plurality of prisms have, for each pattern, reflection surfaces that reflect light emitted from the at least one light source and entering the light guide plate through the incident surface in a direction in which the pattern is viewable.

A keyboard overlay film forming a plurality of keycap accommodating cavities and a key-gap space, the key-gap space surrounding the keycap accommodating cavities, and the keycap accommodating cavities respectively including a key projection surface, wherein the keyboard overlay film includes a top protective layer; a character layer located on a side of the top protective layer forming the keycap accommodating cavities, and the character layer includes a plurality of light-transparent characters respectively corresponding to the key projection surface of the keycap accommodating cavities; a set of touch electrodes located on a side of the character layer opposite to the top protective layer; and a lower protective layer located on a side of the set of touch electrodes opposite to the character layer.

Aspects of the present disclosure involve a transparent structure. The structure may include at least one light source, a transparent light-carrying guide layer optically coupled with the at least one light source. The structure may include refractive layers where a light absorbing feature is operably associated with the light-carrying guide layer to absorb any light not internally reflected in the light guide layer, at least adjacent the light source.

A display includes a transmissive spatial light modulator with an active area; a plurality of lightguides stacked above the active area; and a light source positioned to emit light that propagates into the plurality of lightguides such that the light is totally internally reflected within each lightguide then extracted from each lightguide to illuminate the active area, wherein each lightguide is folded at a first fold. In a first embodiment, each of the plurality of lightguides include a core layer and an emitting region with a plurality of light extraction features arranged in a spatially varying pattern. In a second embodiment, each lightguide is a film-based light guide with a thickness between 0.005 millimeter and 0.175 millimeter. In a third embodiment, the light source is positioned behind the spatial light modulator.

An illuminable image includes a substrate, a transparent light directing channel printed on the substrate, and an image printed over at least a portion of the printed transparent light directing channel.

A lighting assembly adapted for placement upon an article of furniture and/or securement to a wall, including: a frame/housing sub-assembly; an electronics sub-assembly; and a display sub-assembly, wherein the display sub-assembly comprises a first substrate, a second substrate, and a third substrate, wherein the substrates cooperatively interact to provide one or more lighted motion effects.

An electronic device may have input-output devices such as buttons formed from capacitive touch sensor electrodes. A transparent layer may be provided with opaque masking structures having a symbol-shaped opening aligned with a capacitive touch sensor electrode for a button or other input device. The symbol-shaped opening may be adjacent to the electrode and may be illuminated with light from a lighting system. The lighting system may include a light guide plate. The light guide plate may have edges that are oriented at non-zero angle with respect to each other. Light-emitting diodes of different colors may emit light into the edges. The light may be extracted from the light guide plate using bumps in a light extraction region. Light may be collimated using ribs formed on an opposing side of the light guide plate.

An automobile comprises a light transmitting film with a thickness not greater than 0.5 millimeters with a core layer, a lightguide region of the film comprises a light emitting region with light extracting features positioned to receive and extract light from at least one light source propagating by total internal reflection within the core layer out of the core layer, and a light mixing region positioned between the at least one light source and the light emitting region, wherein a surface of the portion of the automobile is visible through the light emitting region of the film when the at least one light source is not emitting light and the light transmitting film is conformal with the surface of the portion of the automobile. The surface of the film may have arcuate cross-sectional shape conforming to a curved surface of the portion of the automobile.

An electronic device includes a substrate film having a first side and a second side, and a number of light sources configured to emit light. A plastic lightguide layer is molded onto the first side of the substrate film. The plastic lightguide layer being of optically at least translucent material to transmit light. The device also includes a masking layer provided on the outer surface of the plastic lightguide layer. The masking layer defines a window for letting the light emitted by the embedded light sources to pass through the masking layer towards the environment.

Wide-area solid-state illumination devices and systems employing a front sheet, a back sheet approximately coextensive with the front sheet, a wide-area light emitting panel positioned between the front and back sheets and one or more strips of a two-sided adhesive tape joining an inner surface of the front sheet with an inner surface of the back sheet along one or more perimeter edges so as to form a thin and hollow sheet-form structure having a generally uniform thickness and at least partially enclosing the wide-area light emitting panel. The wide-area light emitting panel includes one or more solid-state light sources and has a total area which is less than total areas of each of the front and back sheets. The two-sided adhesive tape is configured at a thickness that is approximately equal to or greater than a total thickness of the wide-area light emitting structure. The wide-area light emitting structure may include a planar light guide and one or more LEDs optically coupled to the light guide.