Liquid crystal display device for improving coloration between privacy and public modes

Abstract

A liquid crystal display device comprises a liquid crystal panel and a control unit configured to drive the liquid crystal panel, wherein the liquid crystal panel includes a first substrate, a liquid crystal layer, and a second substrate, all of which are provided in a stated order, the first substrate includes a first electrode and a second electrode either stacked via a first insulating layer or disposed opposite each other, the second substrate includes a third electrode, the control unit includes a display mode switching unit, a gamma correction table memory unit, a gamma correction unit, and an image data output unit, the display mode switching unit switches between narrow viewing angle mode and wide viewing angle mode by controlling a voltage applied to the third electrode, the gamma correction table memory unit contains gamma correction tables by each of which a gray level is associated with an application voltage to the first electrode and/or the second electrode, the gamma correction unit acquires different gamma correction tables from the gamma correction table memory unit for the narrow viewing angle mode and for the wide viewing angle mode, performs gamma correction on original image data based on each of the gamma correction tables, and outputs resultant gamma-corrected image data to the image data output unit, and the image data output unit outputs a liquid crystal panel drive signal to the liquid crystal panel and adjusts the application voltage to the first electrode and/or the second electrode.