we want to connect the thin copper wire to the ITO layer on the PET sheet. But we are facing the problem of connecting this wire to the ITO layer because of the flexibility of the PET Sheet. since it is plastic we can not solder. so can you please suggest to me, how to give this(electrical wire) connection to Flexible ITO coated PET Sheet?
Hello Bobby Bnm ,
Have you tried Aquadag®: a colloidal solution of dispersed Acheson graphite in water? Aquadag® is still used by the electronics industry as an opaque, electrically conductive layer inside TV picture tubes and oscilloscope tubes, it forms the anode in these types of vacuum tubes. Paint it on and let it dry to form a thin, electrically conductive layer.
[1] Bernard H. Porter; Research applications of colloidal graphite; Review of Scientific Instruments; Vol. 7; No. 2; February 1936; pp. 101-106.
[2] D. De Graaf; Use of brush applied coatings in black and white television tubes; in B. N. Chapman, J. C. Anderson (Eds.); Science and Technology of Surafce Coating, A NATO Advanced Study Institute on the Science and Technology of Surface Coating held at Imperial College, University of London in April, 1972; Academic Press; 1974; pp. 209-214.
[3] E. G. Acheson; Carborundum: its history, manufacture and uses; Journal of the Franklin Institiute; Vol. 136; No. …; July-December & October 1893; pp. 194-203 & 279-289.
If you need to hold the wire in place before you paint on the Aquadag®, use a dab of waterglass (a.k.a., water glass), applied before the end of the thin copper wire; allow the waterglass to dry. Remember, though, that dried waterglass is not electrically conductive.
Regards,
Thomas Cuff
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