US 11,966,107 B2
Anti-peep display device and anti-peep method
Chung-Hao Wu, Miao-Li County (TW); Hsin-Hung Lee, Miao-Li County (TW); Chin-Ku Liu, Miao-Li County (TW); Chun-Chien Liao, Miao-Li County (TW); and Wei-Jhe Chien, Miao-Li County (TW)
Assigned to CHAMP VISION DISPLAY INC., Miao-Li County (TW)
Filed by CHAMP VISION DISPLAY INC., Miao-Li County (TW)
Filed on Jun. 14, 2023, as Appl. No. 18/209,494.
Claims priority of application No. 111122188 (TW), filed on Jun. 15, 2022.
Prior Publication US 2023/0408854 A1, Dec. 21, 2023
Int. Cl. G02F 1/13 (2006.01); F21V 8/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G02F 1/29 (2006.01)
CPC G02F 1/1323 (2013.01) [G02B 6/0023 (2013.01); G02B 6/0055 (2013.01); G02F 1/1313 (2013.01); G02F 1/133605 (2013.01); G02F 1/133627 (2021.01); G02F 1/29 (2013.01); G02B 6/0036 (2013.01); G02F 1/133603 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An anti-peep display device, comprising:
a display module, having a display surface; and
an anti-peep module, disposed on the display surface and comprising:
a light guide assembly, comprising a light guide plate, a first condensing portion and a second condensing portion, wherein the light guide plate is disposed on the display surface, the light guide plate has 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 faces the display surface and is opposite to the light exit surface, the second light incident surface and the third light incident surface are located between the first light incident surface and the light exit surface and are disposed on opposite sides, the first light incident surface is formed with a plurality of optical microstructures, the first condensing portion is disposed corresponding to the second light incident surface, and the second condensing portion is disposed corresponding to the third light incident surface; and
a first light source and a second light source, respectively disposed corresponding to the first condensing portion and the second condensing portion, wherein the first condensing portion and the second condensing portion are 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 are configured to reflect the anti-peep beams to the light exit surface, the anti-peep beams are then emitted from the light exit surface, and a light-emitting angle of the anti-peep beams from the light exit surface is between 20 and 60 degrees.