To prevent charging of the sample, the surface must be coated with a conductive layer of gold or carbon.
The design can be anything, since the normal ink layer does not affect the way the conductive and thermochromic layers interact.
If you use too much pressure, you may cause the resistive and conductive layers to be in constant contact.
And the thin conductive layers do block some light from the display screen.
The conductive layer completes the circuit without involving the body of the wearer.
The emissive and conductive layers are made of special organic molecules that conduct electricity.
The anode removes electrons from the conductive layer of organic molecules.
At the boundary between the emissive and the conductive layers, electrons find electron holes.
(This is the equivalent to giving electron holes to the conductive layer.)
In this basic technology, only one side of the insulator is coated with a conductive layer.