Patent ID: 11966107
Assignee: CHAMP VISION DISPLAY INC.
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 10:
11. An anti-peep method applicable to the anti-peep display device, the anti-peep display device comprising a display module, an anti-peep module and a control module, the control module being electrically connected to the display module and the anti-peep module, the display module having a display surface, the anti-peep module being disposed on the display surface and comprising a light guide assembly, a first light source and a second light source, the light guide assembly comprising a light guide plate, a first condensing portion and a second condensing portion, the light guide plate being disposed on the display surface, the light guide plate having a first light incident surface, a second light incident surface, a third light incident surface and a light exit surface, the first light incident surface facing the display surface and being opposite to the light exit surface, the second light incident surface and the third light incident surface being located between the first light incident surface and the light exit surface and being disposed on opposite sides, the first light incident surface being formed with a plurality of optical microstructures, the first condensing portion being disposed corresponding to the second light incident surface, the second condensing portion being disposed corresponding to the third light incident surface, the first light source and the second light source being respectively disposed corresponding to the first condensing portion and the second condensing portion, the first condensing portion and the second condensing portion being configured to convert a plurality of beams provided by the first light source and the second light source into a plurality of anti-peep beams with a beam angle less than 10 degrees, the optical microstructures being configured to reflect the anti-peep beams to the light exit surface, the anti-peep beams being then emitted from the light exit surface, a light-emitting angle of the anti-peep beams from the light exit surface being between 20 and 60 degrees, and the anti-peep method comprising:
configuring the control module to determine whether to turn on the anti-peep module according to an image frame on the display module, wherein the control module drives the anti-peep module to generate the anti-peep beams when the image frame comprises an anti-peep zone, and the control module turns off the anti-peep module when the image frame does not comprise the anti-peep zone.