A transparent displaying base plate and a transparent displaying device. The transparent displaying base plate includes a displaying layer (2) and a liquid-crystal grating layer (3) provided on one side of the displaying layer (2), the displaying layer (2) includes black matrixes (15) and displaying regions (A) defined by the black matrixes (15), the liquid-crystal grating layer (3) is provided with a backlight unit on one side that is further away from the displaying layer (2), and the backlight unit includes a backlight layer for exiting backlight light rays to the displaying layer (2), and at least a light focusing layer for focusing the backlight light rays directly facing the positions of the displaying regions (A) to the black matrixes (15).

A reflective display apparatus is provided. The reflective display apparatus includes a textured sub-micron metal film textured in a periodic manner, a phase change material (PCM) layer, and a phase change control layer that is configured to change reflection properties of the textured sub-micron metal film by causing the PCM to switch between at least two of a plurality of phases.

A projection type transparent display includes a polarization modulator and a reflective layer. The polarization modulator is stacked in sequence by a linear polarizer, a liquid crystal layer and a phase retarder. The reflective layer is stacked on the phase retarder. A projection light is incident on the linear polarizer to form a linearly polarized light. The liquid crystal layer changes a polarization direction of the linearly polarized light. Two kinds of linearly polarized projection lights with polarization directions orthogonal to each other are respectively formed and pass through the phase retarder to respectively form two kinds of circularly polarized projection lights with opposite rotation directions. A background light is incident on the reflective layer. A circularly polarized background light with the same spiral direction is reflected, and the circularly polarized background light opposite to the spiral direction passes through the reflective layer and is incident on the polarization modulator.

According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.

A privacy display comprises a polarised output spatial light modulator, reflective polariser, plural polar control retarders and a polariser. A birefringent surface relief diffuser structure is arranged to transmit light from the display with high transparency and provide diffuse reflection of ambient light to head-on display users. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss and with low diffusion, whereas off-axis light has reduced luminance and increased diffusion. Further, overall display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction, increased frontal reflectivity and diffusion of ambient light. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.

Particular embodiments described herein provide for an electronic device that includes a display, a backlight for the display, and one or more ambient light guiding layers to supplement the backlight with ambient light. In an example, one of the one or more ambient light guiding layers is located on a back side of the electronic device. An ambient light guide monitoring engine can monitor an intensity of ambient light and a display engine can use data from the ambient light monitoring engine to determine the intensity of the backlight for the display.

Liquid crystal displays in computer monitors require a source of backlight, in which light emitting diodes are the most widely used, however these electric light sources can cause eye strain after prolonged viewing. In order to provide an alternative to desktop computer users which are in front of LCD displays for most of the day, the present invention supplies a way to use natural solar backlight from a nearby window or candle to completely eliminate such strain.

A transparent displaying base plate and a transparent displaying device. The transparent displaying base plate includes a displaying layer (2) and a liquid-crystal grating layer (3) provided on one side of the displaying layer (2), the displaying layer (2) includes black matrixes (15) and displaying regions (A) defined by the black matrixes (15), the liquid-crystal grating layer (3) is provided with a backlight unit on one side that is further away from the displaying layer (2), and the backlight unit includes a backlight layer for exiting backlight light rays to the displaying layer (2), and at least a light focusing layer for focusing the backlight light rays directly facing the positions of the displaying regions (A) to the black matrixes (15).

Display technologies are provided for configuring the direction of content presentation using a single display assembly. In some embodiments, the display assembly includes a transparent display unit intercalated between a first switchable layer and a second switchable layer. Each one of the first switchable layer and the second switchable layer is formed to reversibly transition between a transparent state and an opaque state in response to an applied electric field. The transparent display unit, the first switchable layer, and the second switchable layer can be operated individually to configure a particular direction of presenting digital content. In other embodiments, the display assembly includes a switchable layer intercalated between a first transparent display unit and a second transparent display unit. The switchable layer, the first transparent display unit, and the second transparent display unit can be operated individually to configure a particular direction of presenting digital content.

A vehicle display device mounted on a vehicle and configured to display an image to an outside of the vehicle includes: a self-luminous display unit configured to display an image to the outside of the vehicle by emitting light emitted from a light source to the outside of the vehicle; a reflective display unit configured to display an image to the outside of the vehicle by reflecting light from the outside of the vehicle; an information acquisition unit configured to acquire environment information indicating an environment outside the vehicle; and a controller configured to switch between image display by the self-luminous display unit and image display by the reflective display unit based on the acquired environment information.