There is provided an optical display system, including a light source, a control unit, and an array of at least two pixels, each of the pixels being a juxtaposed double grating element, comprising a first grating and a second grating spaced apart at a constant distance from each other, each of the two gratings having at least two edges, at least one sequence of a plurality of lines and apertures, the spacing between the lines gradually changing over the aperture of the gratings, the first grating diffracting a light wave from the light source towards the second grating, the light wave further diffracted by the second grating as an output light wave in a given direction, wherein for each of the pixels the direction of the output light wave from the second grating is separately, dynamically and externally controlled by the control unit.

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.

Described herein are electronic devices that includes a display stack having a cover component atop a lightguide component and a display component below the lightguide component. In some instances, the cover component including an antiglare etching applied to a top surface of a coverglass and a touch pattern applied to a bottom surface of the coverglass. In some cases, an optically clear adhesive layer formed from two types of optically clear adhesive may be located between the cover component and the lightguide component and a ring adhesive may be applied to around an outer edge of the cover component, the optically clear adhesive and the lightguide component.

A display device includes an optical waveguide layer, a variable refractive index layer, and an optical layer. The refractive index of the variable refractive index layer changes in response to application of a drive voltage. The optical layer reflects or absorbs light. The variable refractive index layer reflects the light to be guided through the optical waveguide layer 11 toward the inside of the optical waveguide layer depending on the refractive index of the variable refractive index layer to allow the optical waveguide layer to guide the reflected light. The variable refractive index layer introduces the light to be guided through the optical waveguide layer into the variable refractive index layer depending on the refractive index of the variable refractive index layer and emits the introduced light out of the variable refractive index layer. The optical layer reflects or absorbs the light emitted from the variable refractive index layer.

A display device includes a display panel including a light source area and a display area and including a base substrate having an upper surface facing a first direction, a panel light source part disposed on the upper surface corresponding to the light source area to emit a light to a second direction opposite to the first direction, and a display part disposed on the upper surface corresponding to the display area and a light guide plate disposed adjacent to the display panel in the second direction, receiving the light, and guiding the light to provide the light to the display area, and the display part displays an image using the light received from the light guide plate.

A display device includes a plurality of divided pixels each comprising a reflective electrode, a counter electrode provided so as to face the reflective electrode, a color filter provided on a side of the counter electrode opposite to a side of the counter electrode facing the reflective electrode, and a holding unit configured to hold a potential corresponding to an expression of a gradation; and an inorganic light emitter provided on the counter electrode side of the color filter, and configured to emit light.

A display device includes a plurality of divided pixels, each of which comprising a reflective electrode, a counter electrode provided so as to face the reflective electrode, and a holding unit configured to hold a potential corresponding to an expression of a gradation, and an inorganic light emitter provided on a side of the counter electrode opposite to a side of the counter electrode facing the reflective electrode, and configured to emit light toward the divided pixel.

A display apparatus including an image unit, a light source module and a transparent plate is provided. The image unit has an image display surface which includes a first side and a second side opposite to the first side. The light source module is disposed at the first side of the image display surface, and adapted to serve as a front light source of the image unit to provide a light beam to the image display surface. The transparent plate is disposed above the image display surface.

A reflective display device includes a bi-stable display, a front light module and a plurality of light converging films. The front light module is configured to provide a light to the bi-stable display, and the bi-stable display reflects the light. The light converging films are configured to converge the light reflected by the bi-stable display. The refractive index of the light converging film that is closest to the bi-stable display is lower than the refractive index of the light converging film that is farthest from the bi-stable display.

A display panel and a terminal device including the same are provided. The display panel includes a touch screen configured to present display content, a supplementary light module that includes a light emitting element configured to provide supplementary light and a light guide element configured to guide the supplementary light to the touch screen, and a display substrate configured to form the display content. The display panel can increase brightness of the touch screen, so that users can see the display content on the display panel clearly even in a dim environment, which improves universality of reflective liquid crystal displays.