Liquid crystal display device

A liquid crystal display device, comprising:

• a backlight source;
• a light path modulation box, disposed on the backlight source, wherein the light path modulation box is configured to modulate backlight emitted by the backlight source such that the backlight is emitted out along a direction perpendicular to the light path modulation box, the light path modulation box comprises a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate comprises a first base, a pixel electrode layer disposed on the first base, and a dielectric layer disposed on the pixel electrode layer, and the second substrate comprises a second base and a common electrode layer disposed on the second base;
• and
• a liquid crystal display panel, disposed on the light path modulation box, wherein the backlight emitted by the backlight source enters the liquid crystal display panel through the light path modulation box, and two polarizers are disposed respectively on a surface of the light path modulation box near the liquid crystal display panel and a surface of the light path modulation box near the backlight source;
• wherein the pixel electrode layer comprises a plurality of pixel electrodes disposed at intervals, a gap is defined between adjacent two of the pixel electrodes, and the dielectric layer forms a curved structure in the gap;
• wherein the curved structure comprises a first portion and a second portion disposed symmetrically opposite to each other in the gap, and both the first portion and the second portion are curved and are substantially quarter-circular in shape.