Made of two layers of polyester with electrically conductive coating on the inner side. Two layers are separated by dot-like bumps. Upon actuation (contact of two layers) the coordinates of the touch point is determined. Laminated to acrylic, polycarbonate, or glass backing for rigidity.
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Advantages:
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The continuous
coating throughout
the active area
enables every touch
point to be
translated to a
coordinate.
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Can be made flat or
cylindrical
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Made of two layers of polyester with ITO coating forming rows on one layer and columns on the other. The two layers are separated dot-like bumps. Upon actuation (contact of two layers) the coordinates of the touch point is determined by its row and column. Laminated to acrylic, polycarbonate, or glass backing for rigidity.
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Advantages:
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Variable thickness
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Sealing capability
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Switch sizes may be as low as .10mm
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Does not need to be constantly calibrated
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Drift-free
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Is not effected by
electrical shifts produced from transient voltages
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