US 12,436,418 B2
Anti-peep display screen, vehicle-mounted display device and vehicle
Minyi Wu, Heyuan (CN); Karmun Wan, Heyuan (CN); Wei Wang, Heyuan (CN); Jingcai Bai, Heyuan (CN); Jiying Yang, Heyuan (CN); Binbin Wu, Heyuan (CN); and Kui Tang, Heyuan (CN)
Assigned to VARITRONIX (HEYUAN) DISPLAY TECHNOLOGY LTD., Heyuan (CN)
Filed by VARITRONIX (HEYUAN) DISPLAY TECHNOLOGY LTD., Heyuan (CN)
Filed on Dec. 14, 2023, as Appl. No. 18/539,806.
Claims priority of application No. 202311034766.7 (CN), filed on Aug. 16, 2023.
Prior Publication US 2025/0060621 A1, Feb. 20, 2025
Int. Cl. G02F 1/13 (2006.01); B60K 35/22 (2024.01); G02F 1/13363 (2006.01); G02F 1/1343 (2006.01); G02F 1/1347 (2006.01)
CPC G02F 1/1323 (2013.01) [B60K 35/22 (2024.01); G02F 1/133638 (2021.01); G02F 1/134309 (2013.01); G02F 1/1347 (2013.01); B60K 2360/33 (2024.01); G02F 2413/01 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An anti-peep display screen, comprising:
a passive liquid crystal display module and a color liquid crystal display module stacked along a first direction;
wherein, the passive liquid crystal display module comprises a first electrode layer, a liquid crystal layer and a second electrode layer, the first electrode layer comprises a plurality of first sub-electrodes, the second electrode layer comprises a plurality of second sub-electrodes, and the plurality of first sub-electrodes are opposite to the plurality of second sub-electrodes, and is/are configured to receive the same or different voltages, so as to control a light transmission state of the passive liquid crystal display module in areas where the plurality of first sub-electrodes are located;
wherein the passive liquid crystal display module is a twisted nematic display module; and
wherein a pretilt angle of liquid crystal molecules in the twisted nematic display module is 1°-7°, a twist angle thereof is 80°-100°, and a retardation is 500 nm-1200 nm;
wherein the plurality of first sub-electrodes are arranged in an array, and a spacing between two adjacent first sub-electrodes of the plurality of first sub-electrodes is 3 μm-10 μm;
wherein each of the plurality of second sub-electrodes has the same size as each of the plurality of first sub-electrodes, and the plurality of second sub-electrodes are arranged corresponding to the plurality of first sub-electrodes, respectively.