Provided is a display capable of displaying augmented reality (AR) in which background visibility is maintained and a hotspot is not visible. The display includes, at least: a transparent screen; a projection device for projecting a projection image on the transparent screen; and a sheet-shaped light guide plate for guiding the projection image, in which the projection device is disposed so that light of the projection image is incident from an end portion of the light guide plate, and the transparent screen is attached to at least one of main surfaces of the light guide plate.

A display device and a method for controlling the display device are provided herein. The display device has a light emitting module, a modulating module, and a control circuit. The light emitting module has a plurality of light emitting units. The modulating module is disposed on the light emitting module and has a modulating material layer. The control circuit is electrically connected to the modulating module and configured to switch the display device between a display mode and a projection mode.

A reflector includes a reflective film and a substrate, wherein the reflective film is attached to the substrate. Also, an optical system of an LCD (liquid crystal display) projector includes a first reflector, a second reflector, an LED (light emitting diode) light source, a condenser, a collimating lens, an LCD light valve, a field lens and a projection lens, wherein the LED light source, the condenser, the first reflector, the collimating lens, the LCD light valve, the field lens, the second reflector and the projection lens are set in sequence according to a direction of light. The reflector is significantly improved in the reflection efficiency while maintaining the low cost, or the reflector is significantly reduced in the manufacturing cost while achieving the high reflection efficiency, so that the output brightness and the photoelectric efficiency of the projector including the reflector with low cost, which has a very positive effect.

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.

An LCD projector optical system is provided, including an LED light source, a light guide rod, an overlapped lens module, a quarter wave plate, a brightening polarizer, a focusing lens, an LCD light valve, a field lens and a projection lens, which are sequentially arranged according to a traveling direction of light. The brightening polarizer conducts polarized light splitting for the light, wherein: one polarized light useful to the LCD light valve is transmitted, and the other polarized light useless to the LCD light valve is reflected. The reflected light enters the light guide rod and reaches the LED light source, wherein: a part of the light is reflected back by a reflective film; after passing through the quarter wave plate twice, a polarization plane of the light rotates by 90°, and then the light is utilized by the LCD light valve.

A projection apparatus including an array of infrared emitters, the infrared emitters of said array being arranged in a first pattern; a plurality of liquid-crystal cells and corresponding control circuits, a given liquid-crystal cell being arranged in front of a corresponding infrared emitter of said array; and a processor configured to generate drive signals for driving the control circuits in a random or pseudorandom manner; and control the plurality of liquid-crystal cells individually, via the corresponding control circuits, to project a second pattern of light spots onto objects present in a real-world environment, wherein, when driven by a given drive signal, a given control circuit electrically controls a corresponding liquid-crystal cell to any of: block light emanating from a corresponding infrared emitter, transmit the light in an unbended manner, bend the light.

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 display device and a method for controlling the display device are provided herein. The display device has a light emitting module, a modulating module, and a control circuit. The light emitting module has a plurality of light emitting units. The modulating module is disposed on the light emitting module and has a modulating material layer. The control circuit is electrically connected to the modulating module and configured to switch the display device between a display mode and a projection mode.

A display device includes an imaging element, a flat surface light source and a polarization beam splitter. The flat surface light source is used for providing plural illumination beams. A normal line of the flat surface light source and a normal line of the imaging element are not perpendicular to each other. The polarization beam splitter is arranged between the flat surface light source and the imaging element, and has a geometric surface. When the illumination beams from the flat surface light source are projected on the geometric surface, the illumination beams are reflected to the imaging element. The imaging beams from the imaging element are transmitted through the geometric surface. Consequently, an image is outputted. An imaging surface of the imaging surface can be irradiated uniformly by the illumination beams on within a specified viewing angle.

A matching method of a shared display module is provided and has steps of: receiving, by a mediation platform, a service requirement specification, wherein the service requirement specification has a lease time zone of at least one display module disposed an a building exterior wall; comparing, by the mediation platform, the service requirement specification with at least one service providing specification of a plurality of service providers in the mediation platform; and transmitting, by the mediation platform, at least one compared service providing specification matching with the service requirement specification to a user end of the service requirement specification. The matching method matches a leasable time zone of the display module on the building exterior wall by the mediation platform, so that the display module displays an image or a video demanded by the user end.