The invention discloses an edge type backlight module. The edge type backlight module includes: a back frame having at least one sidewall and at least one bottom plate; a light guide plate disposed on the bottom plate and having a light incident side surface, wherein the light incident side surface is opposite to the sidewall; and a plurality of first backlight sources and a plurality of second backlight sources, wherein the first backlight sources are disposed on the sidewall, the second backlight sources are disposed on the bottom plate and against the sidewall, the first backlight sources and the second backlight sources are alternately disposed, the first backlight sources include a plurality of first LED lamps, and the second backlight sources include a plurality of second LED lamps. The invention also discloses a liquid crystal display device having the edge type backlight module. The COF of the invention is disposed on a portion of the second backlight sources with a lower temperature, so that the COF is in a lower temperature condition, thereby improving its reliability.

A two-dimensional/three-dimensional (2D/3D) switchable display backlight and a 2D/3D switchable electronic display employ a switchable diffuser to support 2D/3D switching. The 2D/3D switchable display backlight includes a plate light guide, a multibeam diffraction grating to couple light out of the plate light guide and the switchable diffuser to intercept and selectably either pass or scatter light beams of the coupled-out light. The 2D/3D switchable electronic display includes the backlight and further includes a light valve array to modulate the coupled-out light. The switchable diffuser facilitates selectability between a three-dimensional pixel and a two-dimensional pixel of the 2D/3D switchable electronic display.

A light source module including a first backlight module, a second backlight module, a turning film, and a first absorptive polarizer film is provided. The first backlight module has a first side and a second side. The first backlight module includes a first light guide plate (LGP) having a first light incident surface and a first light source disposed beside the first light incident surface. The second backlight module is arranged at the second side. The second backlight module includes a second LGP having a second light incident surface and a second light source disposed beside the second light incident surface. The turning film is arranged at the first side. The turning film includes a plurality of reverse prisms. The reverse prisms extend along an extension direction. The first absorptive polarizer film is disposed between the first backlight module and the second backlight module. A display device is also provided.

An example display device includes a display panel to display an image; a backlight unit to provide light to the display panel, the backlight unit including a light emitting unit to emit the light; a light guide plate to transmit the light emitted from the light emitting unit; a pair of electrodes adjacent to the light guide plate; and a polymer layer including liquid crystal molecules within the light guide plate. The liquid crystal molecules are to change orientation upon being introduced to an electric field created by the pair of electrodes to change an opacity of the light guide plate. The display device includes at least one film to collimate and direct light from the backlight unit to the display panel; and a processor to switch voltage being applied on/off to the pair of electrodes.

A display having a variably controlled backlight and/or driver is disclosed. The backlight includes a first light source that emits light within a first spectral power distribution and has a first radiant power output. A second light source emits light within a second spectral power distribution matched to an optical filter for producing a perceived chromaticity and luminosity matching the perceived display appearance without the optical filter.

Provided are a display panel, a preparation method thereof, and a display apparatus. The display panel includes a first substrate and a second substrate disposed oppositely, and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein the first substrate includes a black matrix layer and a color filter layer which are sequentially disposed on a first base substrate; at least one of the first substrate and the second substrate further includes a spacer; and the black matrix layer includes at least one first black matrix, and an orthographic projection of each first black matrix on the first base substrate covers an orthographic projection of the spacer on the first base substrate.

The electronic device includes a first housing including a solar battery, a first display device, and a first structure body and a second housing including a second display device, a coil, an electric double-layer capacitor, a signal processing circuit, a charge and discharge control circuit, and a second structure body. The electronic device can be folded so that display surfaces of the first housing and the second housing face each other and the first structure body and the second structure body face each other. The solar battery is provided on a surface of the first housing on the rear side of the first display device. A pixel included in the first display device and a pixel included in the second display device each include a liquid crystal element, a first pixel circuit, a light-emitting element, and a second pixel circuit. The liquid crystal element includes a reflective electrode having an opening and can perform display by reflecting external light. The light-emitting element can perform display by emitting light toward the display surface through the opening.

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.

In an embodiment, device having display integrated infrared and light source is disclosed. In an embodiment, the device comprises a display, comprising: a visible light source; and an infrared source, the visible light source and the infrared source being integrated into a single radiation source component within the display, and the infrared source emitting an infrared radiation biometrically authenticating a user of the device. In another embodiment a display integrated infrared source is disclosed.

A transmitter includes a controller, configured to generate a control voltage corresponding to a pattern of the change in an amount of light emitted wherein the pattern in which one of a plurality of amounts of light emitted occurs indicates a signal to be transmitted, and a reflector that reflects sunlight. The transmitter also includes a liquid crystal board that receives reflected light that is sunlight reflected by the reflector and transmits the signal to a receiver by changing the amount of light emitted toward the receiver according to the control voltage. The liquid crystal board changes the reflected light passing through rate to a high passing through rate when one of the plurality of the amounts of light emitted occurs, and changes the reflected light passing through rate to a low passing through rate when another one of the plurality of amounts of light emitted occurs.