Display device and display method

• Main Author: ZHANG QIAOYA
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2022
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The embodiment of the invention provides a display device and a display method. The display device comprises a display layer and a liquid crystal grating layer, the display layer is used for displaying images, the liquid crystal grating layer is arranged in the light emitting direction of the display layer, light emitted by the display layer is guided out at a first visual angle or a second visual angle, and the angle range of the first visual angle is smaller than that of the second visual angle; according to the display device, the liquid crystal grating layer is arranged in the light emitting direction of the display layer, and the liquid crystal grating layer enables the light emitted by the display layer to be guided out at the first visual angle or the second visual angle, so that the display device can be freely switched between a peep-proof mode and a non-peep-proof mode according to user requirements; therefore, the privacy of the user is effectively protected, and the user experience is not affected