What is a viewing angle?

This is the angle representing the preferred viewing direction where the LCD display exhibits the
highest contrast. Viewing angles are usually defined in the horizontal and vertical directions, and
measured in degrees perpendicular to the LCD surface. As the user physically moves to either
side of the LCD screen, the images displayed will degrade.

The preferred viewing direction or viewing angle is defined with respect to the hands of a clock.
The most common angles are typically either 6 O’clock (viewed from below) or 12 O’clock
(viewed from above).