An example electrophoretic display device includes: an outer substrate and an inner substrate; and at least one color-changing layer comprising: a plurality of driven electrodes and at least one reference electrode; a plurality of microstructures disposed between the driven electrodes and the reference electrode, the microstructures containing an electrophoretic media; and a controller coupled to the driven electrodes, the controller configured to: obtain image data representing an image to be displayed by the electrophoretic display device; select a subset of the driven electrodes based on a mapping of the image data to the driven electrodes; and drive the subset of driven electrode to induce a voltage difference to change the electromagnetic field applied to the electrophoretic media in the microstructures aligned with the subset of driven electrodes.

A light controlling apparatus includes first and second substrates facing each other; a first electrode on the first substrate; a second electrode on the second substrate; and a liquid crystal layer between the first electrode and the second electrode, the liquid crystal layer including cholesteric liquid crystals, wherein the cholesteric liquid crystals have a focal conic state in a light shielding mode in case where no voltage is applied, and have a homeotropic state in a transparent mode in case where a voltage is applied.

Embodiments are disclosed for a liquid crystal display and writing device that has a high brightness and a high contrast ratio. The device includes a first two conductive layers and a liquid crystal film between the conductive layers. The liquid crystal film includes a first liquid crystal layer, a second liquid crystal layer and a middle polymer layer between the first and second liquid crystal layers. The first and second liquid crystal layers are configured to switch from a light scattering state to a light reflective state to display content. The first and second liquid crystal layers are further configured to switch from the light reflective state to the light scattering state to erase the content.

The present disclosure relates to a display panel, a display device and a smart watch, wherein, the display panel includes a liquid crystal display panel; and a light-exiting surface of the liquid crystal display panel is provided with a cholesteric liquid crystal display film layer; wherein, the cholesteric liquid crystal display film layer is switchable between a scattering state and a transparent state depending on a voltage applied thereto, and is used for displaying by means of its scattering state when the liquid crystal display panel is powered off.

An object is to provide: a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The object is achieved by the transparent screen including: a dot array in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and a layer that is obtained by immobilizing a cholesteric liquid crystalline phase.

An adaptive backlight module and a method and system for producing an adaptive backlight module are described herein. In one example, an adaptive backlight module includes a light source, a polarizer, at least one enhancement film disposed between the light source and the polarizer, and a diffuser disposed between the light source and the enhancement film. The diffuser includes a first electrode coupled to a first substrate and a second electrode coupled to a second substrate. A liquid crystal layer is disposed between the first electrode and the second electrode of the diffuser.

According to one embodiment, an optical device includes a first light-modulating element transmitting or scattering light, and a second light-modulating element transmitting or scattering the light passing through the first light-modulating element, a driving module alternately performing a first mode of making the first light-modulating element scatter the light and making the second light-modulating element transmit the light, and a second mode of making the first light-modulating element transmit the light and making the second light-modulating element scatter the light.

In a display device, an image display panel updates an image in a frame cycle including an image scanning period and a vertical blanking period, a light modulation layer is disposed at a back of the panel and switched to a scattering or transmission state depending on an electric field applied, a light source emits light which enters the light modulation layer from its side and travels therethrough, electrodes are formed according to divided areas of the light modulation layer arranged in a direction of the light and apply the electric field to the light modulation layer, and a controller drives the electrodes in synchronization with image scanning to switch the divided areas to the scattering state in order during the image scanning period, and drives the electrodes according to distances from the side to control the scattering state on the individual divided areas during the vertical blanking period.

The present application relates to a novel liquid crystal compound and a use thereof. The novel liquid crystal compounds of the present application can exhibit a smectic A phase over a wide temperature range. The novel liquid crystal compounds of the present application can be usefully used in the technical fields to which smectic A liquid crystals can be applied, for example, bistable devices.

The present disclosure includes systems, methods, computer readable media, and devices that can generate and present a digital overlay over a view of a tangible object within a display case. In particular, the systems and methods described herein can synchronize a switchable diffuser element with a display screen and one or more light sources to alternate between a scatter state and a transparent state based on a display rate. In particular, the disclosed systems and methods can alternate the display screen between an emissive state (for displaying an emitted digital image) and an attenuating state (for displaying a transparency mask image). By synchronously toggling the display screen and the diffuser element between states, the disclosed systems can present a digital overlay superimposed over a view the inside of the display case.