Provided is an image display device including: a light source part (200) for emitting coherent light; and a plurality of phase shift elements (301) arranged in two-dimensional directions, the device further including a phase shift part (300) for scanning the wavefront of the coherent light from the light source part (200) in two-dimensional directions, in which light is scanned in the two-dimensional directions by a phased array to thereby allow an observer to observe an image.

A display device includes a first substrate, a first wavelength conversion layer and a second wavelength conversion layer disposed on the first substrate and spaced apart from each other, and a polarization layer disposed on the first wavelength conversion layer and the second wavelength conversion layer, the polarization layer including a reflection portion and a transmitting portion, in which the reflection portion overlaps a gap formed between the first wavelength conversion layer and the second wavelength conversion layer.

Provided is a liquid crystal element. The liquid crystal element includes a first substrate, a first electrode provided on the first substrate, a liquid crystal layer provided on the first electrode and including a liquid crystal portion and a hydrophobic portion, and a second electrode on the liquid crystal layer, wherein the hydrophobic portion is phase-separated from the liquid crystal portion, wherein the liquid crystal portion includes polymer materials, a first dye, and liquid crystal molecules dispersed in the polymer materials, wherein the hydrophobic portion is spaced apart from the first electrode, wherein the hydrophobic portion includes hydrophobic materials and a second dye, wherein the first dye is dissolved in the polymer materials, wherein the second dye is dissolved in the hydrophobic portion, wherein the polymer materials include photo-curable polymer materials.

Subject matter disclosed herein relates to arrangements and techniques that provide for using a wavelength specific illumination for illuminating a display, for example an electrowetting display. The electrowetting display comprises a first substrate and a second substrate. A plurality of pixel regions is provided between the first substrate and the second substrate. The electrowetting display further comprises a first fluid within the pixel regions and on the first substrate. The first fluid comprises one or more dyes and a second fluid is disposed on the first fluid. The second fluid is substantially immiscible with the first fluid. An illumination layer is included between the first substrate and the second substrate. The illumination layer comprises one or more LEDs and at least one of the LEDs produces light at a specific wavelength corresponding to a wavelength of absorption of one of the one or more dyes.

An optically active structure and a display device are presented. The device utilized an optically active structure comprising liquid crystal material and a plurality of nanorods configured to emit light in one or more predetermined ranges in response to pumping light. Variation in orientation of the liquid crystal varies orientation of the nanorods and modulated light emission therefrom.

A transparent display device includes a first transparent electrode layer, a second transparent electrode layer disposed opposite to the first transparent electrode layer, and a liquid crystal mixture layer disposed between the first transparent electrode layer and the second transparent electrode layer, wherein the liquid crystal mixture layer includes liquid crystal molecules and quantum rods.

An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.

Provided is a driving device of a display medium, including an application unit that applies a voltage with a pulse width corresponding to a density of a color to be displayed to each of plural pixels of a display medium in which plural kinds of particle groups having different movement starting voltages for movement between a pair of substrates according to an electric field and different colors are enclosed, and a controller that controls the application unit so that a first voltage with a pulse width corresponding to a density of a color of a first particle group finishes being applied to each of the plural pixels, and then a second voltage with a pulse width corresponding to a density of a color of a second particle group is applied thereto.

A display component includes a transflective layer, a reflective layer, and at least one sidewall. The reflective layer is arranged opposing to the transflective layer, and the at least one sidewall is arranged between the reflective layer and the transflective layer. The transflective layer, the reflective layer, and the at least one sidewall are together configured, upon an input of an incident light through the transflective layer, to output a light of a target color out through the transflective layer. One or more of the at least one sidewall comprise at least one light-conversion layer configured to emit a light of the target color upon excitement by a light of a different color shedding thereupon. The display component can be configured to output a red light, a green light, or a blue light.

Color derived from metallic nanostructures are often more efficient, more robust to environmental changes, and near impossible to damage or bleach due to overexposure. The embodiments combine these advantages with the millisecond re-configurability of liquid crystals to actively control a reflective color of a metallic nanostructure. Of the current technologies that boast active color tunability, many are pigmentation based (e-ink in e-readers) and/or need seconds to change color (photonic ink, electrochromic materials). Speed is an advantage of the embodiments and is comparable to current liquid crystal displays (˜120 Hz). Traditional LC displays use static polymer films (color filters) and white back light to generate color. Being able to actively tune the color from a single metallic nanostructure allows for smaller pixel size, increased resolution, and decreased fabrication cost compared to a conventional RGB color pixel without needing external white light source for extremely low power operations.