·Notice
the dark regions along the bottom and upper left corner of the display.
·
·This
non-uniformity is caused by an
irregularity
in the thickness of the thin films.
-The
difference in thickness between the center of the display and the dark band at the bottom is about 16 microns.
·
·Areas
where the film is thinner will be brighter because the electric field is larger here. Thicker areas will be dimmer.