LCD cell thickness - why is this restricted?

Discussion in 'General Electronics Chat' started by gtbiyb, Jun 8, 2013.

  1. gtbiyb

    Thread Starter New Member

    Jun 8, 2013
    1
    0
    Hi,

    I have read loads on LCD operation and in particular NT-LCD and understand the twisting of the light by the LC. Everywhere i read it states that "the thickness of the cell is crucial for correct operation" but does not say why!

    Why is this? Is it to do with the pitch of the LC helix? Or that the order in the LC is lost at a certain seperation from the grooved glass?

    thanks

    matt
     
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