Am 31.03.2010 12:48, schrieb Invisible:

> Why is LCD angle-dependent in the first place?

LCDs (at least the older ones) use an effect of various materials (which 
can be controlled by an electrical current in the case of LCs) to 
"twist" the polarization direction of light passing through. The LCs are 
sandwiched between two polarizing filters, the first of which is used to 
polarize the light source, and the second to filter out part of the 
light depending how much "twist" it has experienced. (In passively-lit 
LCDs, a single polarizing filter may serve both roles.)

Obviously the twisting effect does not only depend on voltage applied to 
the LC, but also on the distance the light travels through it - which in 
turn depends on the viewing angle.

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