US 11,703,702 B2
Privacy function structure that can switch between a privacy state and a non-privacy state, display panel, and display device
Yunyang Liu, Sichuan (CN); Tianyu Xia, Sichuan (CN); and Haijiang Yuan, Sichuan (CN)
Assigned to MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and HKC CORPORATION LIMITED, Guangdong (CN)
Filed by Mianyang HKC Optoelectronics Technology Co., Ltd., Sichuan (CN); and HKC Corporation Limited, Guangdong (CN)
Filed on Nov. 28, 2022, as Appl. No. 17/994,863.
Claims priority of application No. 202111438234.0 (CN), filed on Nov. 29, 2021.
Prior Publication US 2023/0168527 A1, Jun. 1, 2023
Int. Cl. G02F 1/13 (2006.01); G02F 1/1362 (2006.01); G02F 1/1334 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/1334 (2013.01); G02F 1/136209 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A privacy function structure comprising a privacy state and a non-privacy state, the privacy function structure further comprising:
a first conductive layer;
a privacy liquid crystal layer disposed on a side of the first conductive layer;
a light-transmitting cover plate disposed on a side of the privacy liquid crystal layer away from the first conductive layer; and
a second conductive layer disposed on a side of the light-transmitting cover plate facing the first conductive layer, the second conductive layer comprising a plurality of conductive strips mutually parallel; wherein each two adjacent conductive strips form a gap, and when the privacy function structure is in the privacy state, directions of electrical signals on each two adjacent conductive strips energized are opposite; wherein
the light-transmitting cover plate comprises first regions and second regions, wherein one second region is arranged between each two adjacent first regions, and each of the plurality of conductive strips covers a corresponding first region;
when all the plurality of conductive strips are de-energized, the privacy liquid crystal layer corresponding to the first regions transmits light, the privacy liquid crystal layer corresponding to the second regions transmits light, and the privacy function structure is in the non-privacy state;
when at least one conductive strip is energized, the at least one conductive strip energized and the first conductive layer form a vertical electric field, so that the privacy liquid crystal layer corresponding to at least one first region where the at least one conductive strip energized is located fails to transmit light, and the privacy function structure is in the privacy state; and
by controlling on and off of the plurality of conductive strips, the privacy function structure is switched between the privacy state and the non-privacy state.