Patent ID: 11921383
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A method for operating a liquid crystal display device comprising a plurality of pixels,
wherein one pixel of the plurality of pixels comprises a first sub pixel and a second sub pixel, which are adjacent to each other,
wherein the one pixel comprises:
a first substrate;
a first electrode on the first substrate;
metamaterial layers on the first electrode, wherein the metamaterial layers comprise a first metamaterial layer within the first sub pixel and a second metamaterial layer within the second sub pixel;
a liquid crystal layer on the first and second metamaterial layers;
a second electrode on the liquid crystal layer; and
a second substrate on the second electrode,
wherein the first metamaterial layer and the second metamaterial layer comprise metamaterials having properties different from each other, respectively,

wherein the method for operating comprises:
applying no voltage to the first electrode;
applying a first voltage to phase-modulate a first portion of the liquid crystal layer provided on the first metamaterial layer to a first value and phase-modulate a second portion of the liquid crystal layer provided on the second metamaterial layer to a second value;
applying a second voltage to maintain the first portion of the liquid crystal layer to the first value and phase-modulate the second portion of the liquid crystal layer to the first value;
applying a third voltage to phase-modulate the first portion of the liquid crystal layer to the second value and maintain the second portion of the liquid crystal layer to the first value; and
applying a fourth voltage to maintain the first portion of the liquid crystal layer to the second value and phase-modulate the second portion of the liquid crystal layer to the second value.