Angle Of View - Sanyo TI5110LCD Training Manual

Improvement Technology of LCD Display
6-2 Angle of View (TN Type)
The principle of optical penetration and the interception of the LCD shutter by the arranged direction of
cylindrical liquid crystal molecules controls the direction of light. Therefore, brightness, hue, and contrast
depend on the direction of view of the LCD display. The range (angle) where these look normal is called
the "angle of view." The fault of the TN LCD display is that this angle of view is narrow.
Fig. 22 shows that brightness changes depending on the angle the screen with a gray picture is viewed.
In this figure, the liquid crystal molecule leans diagonally. Therefore, the amount of optical penetration will
change depending on the angle when watching the screen from the front or the side.
Glass
Plate
Glass
Plate
Polarized
Board
Transparent Electrode
(Common)
Alignment Film
Liquid Crystal Molecule
Alignment Film
Transparent Electrode
(Pixel, TFT)
Polarized
Board
Fig. 22
-22-
Training Manual Principle of LCD
The brightness becomes
different depending on the

angle of view.

Angle of View (TN type)