A display device which is not harmful to the human eye in respect of blue light includes a display panel, a backlight module, and a light adjusting component. The backlight module includes white light emitting diodes (LEDs) for emitting light. Each white LED includes a blue light chip and a yellow fluorescent material encapsulated on the blue light chip. Thereby, transmittance of the light adjusting component for blue light having a wavelength less than 450 nm is less than 10% and transmittance of light adjusting component for blue light having a wavelength over 470 nm is not less than 90%. The light adjusting component reduces the emission from the display device of yellow light having a wavelength of about 575 nm to 595 nm.

Imaging systems may include tunable polarization filters. A tunable polarization filter may be integrated directly into an image sensor package. For example, the tunable polarization filter may serve as cover glass for the image sensor package. Tunable polarization package glass may be incorporated into image sensor packages that have air gaps between the image sensor and the cover glass or that have transparent adhesive between the image sensor and the cover glass. The tunable polarization layer may be controlled at a global level, at a sub-array level, or at a pixel level. In some cases, the tunable polarization layer may be a tunable polarization filter. In this example, the direction of the polarization filter is tuned. In other cases, the tunable polarization layer may be a tunable polarization rotator. In this example, the tunable polarization layer selectively rotates the polarization of light that passes through the tunable polarization layer.

An electronic device includes a display panel and a parallax barrier. The display panel includes a plurality of color sub-pixels of a first color, a second color, and a third color. The parallax barrier overlaps the display panel, wherein the parallax barrier includes a plurality of barrier units. A barrier unit of the first color overlaps at least a color sub-pixel of the second color and a color sub-pixel of the third color in a top view.

A display apparatus is provided. The display apparatus of an embodiment includes a panel and a filter film. The filter film is disposed on the panel, and a resistance of the filter film is between 10.sup.3 ohm/sq and 10.sup.10 ohm/sq. A transmittance of the filter film in a wavelength range from 380 nm to 420 nm is less than 100%. The display apparatus of an embodiment includes a panel, a polarizer, and a filter film. The polarizer is disposed on the panel. A transmittance of the filter film in a wavelength range from 380 nm to 420 nm is less than 100%. The display apparatus of the disclosure may reduce the transmittance of short-wavelength light and improve display quality and reliability.

A display device comprising a beam splitting element, a polarization modulating element, a light shifting element and a reflective liquid crystal panel is provided. The polarization modulating element is disposed on one side of the beam splitting element along the first direction between the beam splitting element and the light shifting element, the light shifting element is disposed on one side of the polarization modulating element along the first direction between the polarization modulating element and the reflective liquid crystal panel, and the reflective liquid crystal panel is disposed on one side of the light shifting element along the first direction, wherein the beam splitting element receives an illumination beam and allows an image beam to pass through, the illumination beam is reflected in the beam splitting element and transmitted in the first direction.

A multi-view display device (1) is switchable between a single view and a multiple view mode. The display device comprises a display panel (3) having rows and columns of pixels or sub-pixels (5) configured to produce a display output. A lenticular lens arrangement (9) is arranged over a display output side of the display panel and includes an array of lenticular lens elements (11) which comprise an electro-optic material (23) adjacent a non-switchable optically transparent layer (21). The electro-optic material comprises a cholesteric liquid crystal component having an ordinary refractive index and an extra-ordinary refractive index. The cholesteric liquid crystal component comprises a helical structure defined by a pitch which is selected such that a product of the pitch and the difference between the ordinary and extra-ordinary refractive indices is equal to or less than a visible light wavelength of the display output. An effective refractive index of the cholesteric liquid crystal component is controllable by application of an electrical stimulus thereby permitting switching between the single view and multiple view modes.

Electro-optic, especially electrophoretic, displays are used in variety of architectural and furniture applications, including a tile (100) comprising an electro-optic layer (110) capable of changing the color of the file, front and multiple rear electrodes and a light-transmissive polymeric layer (102), the exposed surface of which is textured to provide a plurality of facets inclined to the plane of the tile (100), the rear electrodes being aligned with the facets. A variable color writable board is also provided.

A light-absorbing, neutral density filter for an electronic device display. More specifically, a light-absorbing, neutral density filter applied as a shield, protective film, or protective coating layer for an electronic device display that blocks ultraviolet light, high energy visible light, and at least a portion of blue light. The neutral density filter comprises a polymer substrate and an absorbing agent.

Provided is a horizontal electric field mode liquid crystal display device in which light leak and tint change at the time of black display are reduced in case of being seen from an oblique direction. The liquid crystal display device is an IPS mode liquid crystal display device including at least a first polarizer, a first optical compensation layer, a liquid crystal cell, and a second polarizer in this order, in which the first optical compensation layer satisfies a predetermined relational expression, a total thickness-direction retardation Rth total(550) present between the liquid crystal layer and the second polarizer in the liquid crystal cell satisfies a predetermined relational expression, and a slow axis of the first optical compensation layer is parallel to an absorption axis of a polarizer layer.

An optical film, a color filter substrate, manufacturing methods thereof and display devices are provided, in the field of liquid crystal display technology. The color filter substrate includes a base, a color resistant layer and a diffusion layer. The color resistant layer and the diffusion layer are arranged on the base, and the color resistant layer and the base are arranged at the same side of the diffusion layer. The color resistant layer comprises a plurality of color resistant blocks which are arranged in an array. The diffusion layer comprises a plurality of diffusion structures which are arranged to be in one-to-one correspondence to the plurality of color resistant blocks. Each of the plurality of diffusion structures is configured to diffuse light vertically emitted from the color filter substrate.