A display device includes a waveguide, an array of tunable retarders in contact with the waveguide, and a polarization selective optical element. A respective tunable retarder of the array of tunable retarders receives light from the waveguide. The respective tunable retarder has a first state, which causes the respective tunable retarder to direct light having a first polarization in a first direction and a second state, which causes the respective tunable retarder to direct light having a second polarization that is distinct from the second polarization in the first direction. The polarization selective optical element is located adjacent to the array of tunable retarders so that the light having the second polarization propagates from the polarization selective optical element in a second direction and the light having the second polarization propagates from the polarization selective optical element in a third direction distinct from the second direction.

A display panel and a display device are disclosed. The display panel includes liquid crystal display panel, and a light control panel that are stacked; the liquid crystal display panel includes first mesh lines extending along a first direction and second mesh lines extending along a second direction intersecting with the first direction that define color subpixel units; the light control panel allows back light to be enter the liquid crystal display panel after passing through the light control panel, and includes first signal lines extending along the first direction and second signal lines extending along the second direction that define light control units; N color subpixel units continuously arranged and respectively displaying different colors constitute one pixel unit; N is a positive integer; along the first direction, a maximum length of one light control unit is m times a maximum length of one pixel unit; m is a non-integer.

A display switching device according to one or more embodiments may include a lens array including an array of a plurality of lenses and a display unit. Light from each of the plurality of light source positions transmits through a different position on the display unit and is focused by a corresponding lens. A transmittance on the display unit through which the light transmits differs depending on a position on the display unit. The transmittance at a position of a plurality of positions on the display unit is a transmittance of one of three or more types.

An image processing device that realizes local dimming control and push-up control of a display device using an artificial intelligence function is provided. The image processing device includes a trained neural network model that estimates a local dimming pattern representing light emitting states of light source units corresponding to a plurality of areas divided from a display area of an image display unit for a target display image, and a control unit that controls the light emitting states of the light source units on the basis of the local dimming pattern estimated by the trained neural network model for the target display image displayed on the image display unit.

A thin film transistor, an array substrate and a display device are provided. The thin film transistor is on a base substrate and includes a gate electrode, a first electrode, and a second electrode on the base substrate. The gate electrode includes a first body portion and a first extension portion extending along the first direction, electrically connected with the first body portion, and spaced apart from the first body portion by a first spacing. The first electrode includes a first overlapping end, an orthographic projection of the first overlapping end on the base substrate at least partially overlaps with an orthographic projection of the first body portion on the base substrate; a first compensation end at a side of the first overlapping end away from the first body portion, an orthographic projection of the first compensation end on the base substrate at least partially overlaps with an orthographic projection of the first extension portion on the base substrate; and a first intermediate portion connecting the first overlapping end and the first compensation end, an orthographic projection of the first intermediate portion on the base substrate is within an orthographic projection of the first spacing on the base substrate.

A surface light source includes: a light guide plate having an upper surface and a lower surface located opposite the upper surface, and including at least one through hole extending from the upper surface to the lower surface; a wiring substrate located on a lower surface side of the light guide plate and including a wiring layer; and at least one light source including a light-emitting element electrically connected to the wiring layer of the wiring substrate. The light source is located inside the through hole. The upper surface of the light guide plate has a first region including a plurality of depressed portions.

A backlight system includes a plurality of pixel ICs respectively including a plurality of channels connected to a plurality of LEDs and that control the LEDs to be turned on and off through the channels, and a driver IC connected to the pixel ICs and that supplies a data signal to each of the pixel ICs. The pixel ICs include a first pixel IC connected to first LEDs and a second pixel IC connected to second LEDs. The first pixel IC turns the first LEDs on or off in a first order based on first control data included in the data signal, and the second pixel IC turns the second LEDs on or off in a second order different from the first order based on second control data included in the data signal.

A liquid crystal display and a method for driving the same are disclosed. The liquid crystal display includes a display panel which is virtually divided into a plurality of blocks, a backlight unit including a plurality of light sources irradiating light onto the display panel, a backlight dimming controller which analyzes digital video data, calculates a dimming value of each of the blocks, and adjusts a global dimming value based on the dimming values of the blocks so as to increase brightness of the plurality of light sources within previously determined power consumption, and a light source driver which outputs light source driving signals for driving the plurality of light sources based on the dimming values of the blocks and the global dimming value.

The backlight unit includes a light source unit, and a wavelength conversion member disposed on an optical path of light emitted from the light source unit. The light source unit includes a light source allocated to each of the areas, a control of the backlight brightness for each area is performed by controlling a light emission intensity of each light source allocated to each area independently of a light emission intensity of a light source allocated to a different area, and a light source allocated to at least one area includes a light source group including two or more kinds of light sources having different light emission maximum wavelengths, and a light emission intensity of at least one kind of light source included in the light source group is capable of being controlled independently of a light emission intensity of a different light source included in the light source group.

The present disclosure discloses an electromagnetic pen display, which includes a display module, a light emitting module and an electromagnetic input module. The display module includes a liquid crystal display panel configured to display image frame and a dynamic dimming pad. The dynamic dimming pad being configured to generate a dynamic dimming signal based on information of the display image frame of the liquid crystal display panel. The light emitting module includes a light source driving board and a plurality of light sources. The light sources being correspondingly electrically connected to the light source driving board, the light source driving board being configured to correspondingly dynamically driving a light emission luminance of the plurality of light sources in response to receiving a dynamic dimming signal from the dynamic dimming pad. The electromagnetic input module is configured to selectively receive a write input signal. The present discloses further provides a method for driving the same.