OU NanoLab/NSF NUE/Bumm & Johnson
Applying
Thin Films
-The dielectric layer should cover all of the phosphor
layer and be as thin as possible without
risking a short in the capacitor.
-The silver layer must not touch the ITO. Parts of the ITO layer are removed in order to extend the silver layer to the edge of the
glass. This makes it easier to connect
the lamp to a power source.
The black
lines mark the etched ITO pattern, and are used to accurately place the scotch
tape; they’re later removed with acetone.
Phosphor
Layer
Dielectric
Layer
Silver
Layer (Rear Electrode)
Cross-section
of TFEL display
·The thin
films must be applied to the substrate
within defined boundaries to avoid shorting
the capacitor.
·Layer
Constraints
-The
phosphor layer should be as thin as possible