US 12,468,189 B2
Polarizer and array, polarization-controllable method and apparatus, and electronic device controlling a state of connectivity
Wangchao Ruan, Dongguan (CN); Ruihua Li, Shenzhen (CN); and Qingping Wang, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Feb. 10, 2023, as Appl. No. 18/167,142.
Application 18/167,142 is a continuation of application No. PCT/CN2021/103014, filed on Jun. 29, 2021.
Claims priority of application No. 202010818917.8 (CN), filed on Aug. 14, 2020.
Prior Publication US 2023/0185125 A1, Jun. 15, 2023
Int. Cl. G02F 1/1335 (2006.01); G02F 1/1337 (2006.01)
CPC G02F 1/133531 (2021.01) [G02F 1/133541 (2021.01); G02F 1/133788 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A polarization-controllable method, applied to an electronic device comprising an optical lens, a power supply, and a polarizer array comprising multiple types of polarizers arranged in a same plane, an electrode layer of a first liquid crystal cell and an electrode layer of a second liquid crystal cell of the polarizer array are respectively connected to the power supply through a switch, and the polarizer array and the optical lens are sequentially disposed along a light incidence direction; the method comprising:
passing light incident to the optical lens through the first liquid crystal cell and a first alignment film;
passing light incident to the optical lens through the second liquid crystal cell and a second alignment film that is oriented differently from the first alignment film; and
controlling the polarizer array to operate in a first state by controlling a state of connectivity between the electrode layer of the first liquid crystal cell and the power supply and a state of connectivity between the electrode layer of the second liquid crystal cell and the power supply, the polarizer array in the first state polarizing light that is incident to the optical lens in a first polarization direction based on orientation of the first alignment film, and
controlling the polarizer array to operate in a second state by controlling a state of connectivity between the electrode layer of the first liquid crystal cell and the power supply and a state of connectivity between the electrode layer of the second liquid crystal cell and the power supply, the polarizer array in the second state polarizing light that is incident to the optical lens in a second polarization direction based on orientation of the second alignment film,
to thereby controllably obtain polarized light in first and second different polarization directions.