Viewing angle controllable liquid crystal display

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 each respectively having a first transparent polarization axis and a second transparent polarization axis forming an acute angle with 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;
• 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;
• and
• a fourth polarizer, disposed between the LCD panel and the third polarizer and having a fourth transparent polarization axis generally perpendicular to the first transparent polarization axis.

A viewing angle controllable liquid crystal display (LCD) comprising:

• first and second polarizers respectively having a first polarization axis and a second polarization axis forming a first angle with each other;
• and
• a plurality of first viewing angle controllers coupled to the second polarizer, each comprising a first liquid crystal layer with liquid crystal molecules having a first director axis;
• wherein at least one first director axis is generally parallel to one of the first and second polarization axes.