INVISIBLE PATTERNS FOR TRANSPARENT ELECTRICALLY CONDUCTIVE FILMS

摘要

Electrically conductive films and methods for making them. The films include at least two patterns, the first of which, alone, would be visible, but with the addition of one or more other patterns, becomes invisible to the unaided human eye. These films are useful in applications where invisible patterning is desirable, such as, for example, devices employing touch screens.