Insanely detailed analysis of the computer interface designed for Star Trek: The Next Generation. Bracercom.com

The LCARS Frame

Here are the common fame structures, notice I did not segment it but
kept it continuous for the number of segments in a frame is up to
the number of options you want your application to display upfront.

The LCARS “Frame” always goes from thick to thin and vice-versa; it is
NEVER the same in thickness by the next turn.