Patent ID: 8144290

Claim:
A viewing angle controllable liquid crystal display (LCD) comprising: a back light module; a first polarizer and a second polarizer provided on one side of the back light module and respectively having a first transparent polarization axis and a second transparent polarization axis oriented generally perpendicular to each other; an LCD panel, disposed between the first polarizer and the second polarizer; a first viewing angle controller, disposed between the LCD panel and the second polarizer and comprising a first liquid crystal layer, wherein liquid crystal molecules of the first liquid crystal layer have first director axes generally parallel to one of the first and second transparent polarization axes; and a third polarizer, disposed between the LCD panel and the first viewing angle controller and having a third transparent polarization axis generally parallel to the second transparent polarization axis; wherein the first liquid crystal layer includes top and bottom portions and liquid crystal molecules included in the top portion and the liquid crystal molecules included in the bottom portion both have first director axes generally parallel to one of the first and second transparent polarization axes.