Anti-peeping device, anti-peeping display and control method

摘要

An anti-peeping device, an anti-peeping display, and a control method. The anti-peeping device comprises an external light source, a grating mirror structure, and a first controller coupled to the grating mirror structure. The external light source is configured to emit light towards the grating mirror structure, and the first controller is configured to control the grating mirror structure to rotate such that light emitted from the external light source towards the grating mirror structure is reflected to a first direction by the grating mirror structure, the first direction deviating from a normal perpendicular to the horizontal plane of the grating mirror structure.