An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.

Provided are a beam steering apparatus, a method of driving the beam steering apparatus, and a light detection and ranging (LiDAR) system including the beam steering apparatus. The beam steering apparatus includes: a phase modulation device configured to modulate a phase of incident light and emit at least first emitted light and second emitted light; and a beam reflection device configured to reflect, to an object, at least one from among the first emitted light and the second emitted light. The phase modulation device includes a plurality of channels configured to independently modulate the phase of the incident light, and a binary phase profile is formed when one of first and second phase values 1 and 2 is applied to each of the plurality of channels.

The present disclosure provides a touch display device, including an upper substrate, a lower substrate, and a liquid crystal layer placed between the upper and lower substrates. The upper substrate includes a touch detection structure, and a plurality of pixel units arranged in a matrix. Each pixel unit includes a switch element and a pixel electrode. The lower substrate includes a common electrode and a reflection layer. The reflection layer is used for reflecting external light, and the external light refers to light from outside and sequentially emitting to the upper substrate and the liquid crystal layer, and then being incident to the reflection layer. In the touch display device, no whole or large area display electrode such as the common electrode is placed between the touch detection structure and the users. Thus, external touch signals will not be shielded, and the touch function can be better realized.

A multispectral filter matrix for an electromagnetic wave, the matrix including at least a first and a second optoelectronic element, each optoelectronic element including a colour filter and a photoelectric transducer facing the filter, each colour filter forming a Fabry-Perot cavity including a first reflective layer, a second reflective layer and a Fabry-Perot cavity layer of dielectric material between the first reflective layer and the second reflective layer, the layer of dielectric material including a lower surface, in contact with the first reflective layer; the lower surface being curved, an upper surface in contact with the second reflective layer, the upper surface being curved, the average thicknesses of the two layers of dielectric material of the two filters being different.

According to one embodiment, a display device includes a switching element, an organic insulating film which covers the switching element, a reflective film in contact with the organic insulating film, a first transparent conductive film which covers the reflective film, a first capacitance insulating film which covers the first transparent conductive film, a pixel electrode disposed on the first capacitance insulating film and electrically connected to the switching element, an electrophoretic element disposed on the pixel electrode and a common electrode disposed on the electrophoretic element.

An optical switching device includes a drive substrate, a transparent substrate, a liquid crystal layer, and a reflection enhancing film. The drive substrate includes a pixel region including a plurality of pixel electrodes, an outer circumferential region arranged at an outer circumference of the pixel region, and a seal region. The transparent substrate includes a counter electrode. The liquid crystal layer is interposed between the drive substrate and the transparent substrate. The reflection enhancing film is arranged on the pixel region, the outer circumferential region, and the seal region. The reflection enhancing film includes at least one assembly of dielectric films to be stacked, each assembly being a set of two dielectric films having different refractive indexes. The dielectric film as the first layer included in the reflection enhancing film has a different thickness from other dielectric films.

An electro-optic modulator device includes a modulation region, a reflecting region, a conductive line and an anti-reflecting region. The modulation region includes a doped region. The reflecting region is over the modulation region. The conductive line is connected to the doped region. The conductive line extends through the reflecting region. The anti-reflecting region is on an opposite surface of the modulation region from the reflecting region.

A display panel, a display device and a display method are provided. The display panel includes a base substrate, a pixel array and a light conversion layer. The pixel array is arranged on the base substrate and includes a plurality of pixel units, and the light conversion layer is arranged on a display side of the pixel array. Each of the plurality of pixel units includes an optical resonant structure, and the optical resonant structure includes a first reflection layer, a second reflection layer and a dielectric layer. The first reflection layer is arranged on the base substrate, the second reflection layer is arranged on the first reflection layer and is parallel to the first reflection layer, and the dielectric layer is arranged between the first reflection layer and the second reflection layer.

An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.

The present disclosure relates to a backlight module as well as a display panel and an electronic device comprising the same. The backlight module includes: a light guide plate; a first low refractive plating layer; a diffusion plating layer; a high refractive plating layer; a second low refractive plating layer; a Bragg reflective plating layer; and a light source. Further, in the backlight module, refractive indexes of the first low refractive plating layer and the second low refractive plating layer are lower than that of the light guide plate, and a refractive index of the high refractive plating layer is higher than that of the light guide plate.