A transparent screen which displays an image projected from a projector. The transparent screen includes a display panel including a diffusion film which diffuses projection light from the projector, and a tinted film which is disposed to be remoter from the projector than the diffusion film is and has a transmittance which is variable. The transparent screen includes a controller which performs control to decrease the transmittance of the tinted film when an illuminance of a site where the transparent screen is installed is equal to or higher than a first threshold, and performs control to increase the transmittance of the tinted film when the illuminance is equal to or lower than a second threshold lower than the first threshold.

A liquid crystal display unit of the present disclosure has a liquid crystal panel having a pixel region including a plurality of pixels, and the liquid crystal panel includes: a first substrate on which a plurality of pixel electrodes having light reflectivity are provided for each of the pixels; a second substrate disposed in opposition to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and an interlayer film provided between the first substrate and the liquid crystal layer, and the interlayer film has a plurality of sloped sections each including at least a portion facing a corresponding one of the plurality of pixel electrodes, and the plurality of sloped sections each have a slope width that faces the corresponding one of the plurality of pixel electrodes and that differs from one another.

A transparent display system and a display method thereof are disclosed. The transparent display system includes a transparent display panel, a projecting apparatus and a control device. The transparent display panel includes a viewing side and a rear side opposite to the viewing side and is configured to display image information on the viewing side; the projecting apparatus is configured to project image information on the rear side of the transparent display panel; and the control device is configured to control synchronization between a display operation of the transparent display panel and a projection display operation of the projecting apparatus.

An anti-peep display device includes a display module and an anti-peep module disposed on the display module. The anti-peep module includes the following features. The first light incident surface faces the display surface, the second and third light incident surfaces are located on opposite sides of the first light incident surface, the first condensing portion is disposed corresponding to the second light incident surface and the first light source, the second condensing portion is disposed corresponding to the third light incident surface and the second light source, the first and second condensing portions convert beams of the first and second light sources into anti-peep beams with a beam angle less than 10 degrees, and the optical microstructures reflect the anti-peep beams and exit the anti-peep beams from the light guide plate. The present invention also provides an anti-peep method applicable to the anti-peep display device.

A backlight module and a display device are provided. The backlight module includes a first light-emitting component and a second light-emitting component. The first light-emitting component includes a regular light guide plate, and an angle between a light emitted by the first light-emitting component and a first direction is less than or equal to a first preset angle, and the first direction is perpendicular to the first direction. The second light-emitting component includes a collimated light guide plate, an angle between a light emitted by the second light-emitting component and the first direction is less than or equal to a second preset angle, and the second preset angle is less than the first preset angle.

A display device includes a display panel configured to display an image, a first backlight unit that is disposed under the display panel and outputs first light, and a second backlight unit that is positioned between the display panel and the first backlight unit and outputs second light, wherein the first backlight unit includes a first light guide plate having first patterns protruding or recessed from a rear surface of the first light guide plate, the second backlight unit includes a second light guide plate having second patterns protruding from a rear surface of the second light guide plate, and the second patterns have an asymmetric pyramid shape.

A projector includes an image projection unit for displaying an image by a liquid crystal panel, and a controller that powers off the projector after displaying a black image in the image projection unit for a predetermined time (a set refresh time) in a refresh mode for improving burn-in of the liquid crystal panel, in which the controller stops the refresh mode when an interrupt event is generated before the set refresh time elapses in the refresh mode and powers off the projector after executing an interrupt process according to the interrupt event.

A backlight module, including: a surface light source; a first light guide plate laminated with the surface light source in a thickness direction, wherein the first light guide plate is on a light-exiting side of the surface light source, and a side of the first light guide plate proximal to the surface light source comprises a plurality of first networks; and a first light source on a side surface of the first light guide plate, in which an orthographic projection of the first light source onto a plane, where a light-exiting surface of the surface light source is located, does not overlap with that of the first light guide plate onto the plane.

Provided is a display device that can be realized with a simple configuration and functions as a transparent display allowing background to be clearly seen therethrough. When a liquid crystal panel is in an ON state, polarized backlight that is incident from a polarized backlight unit reaches a front surface. At this point, ambient light that is incident from a rear side also reaches the front surface. Accordingly, an observer who is on a front side of a transparent display can visually recognize an image that is displayed in an overlaid manner on the background seen through the transparent display. In a case where the liquid crystal panel is placed into an OFF state, the polarized backlight cannot reach the front surface of the transparent display, and the ambient light reaches the front surface.

A transparent display system and a display method thereof are disclosed. The transparent display system includes a transparent display panel, a projecting apparatus and a control device. The transparent display panel includes a viewing side and a rear side opposite to the viewing side and is configured to display image information on the viewing side; the projecting apparatus is configured to project image information on the rear side of the transparent display panel; and the control device is configured to control synchronization between a display operation of the transparent display panel and a projection display operation of the projecting apparatus.