Freescale Semiconductor, Inc.
ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
Freescale Semiconductor, Inc.
Resistive Touch Panel Operation
The resistive panel works by applying a voltage gradient across one conductive layer and measuring the voltage at the point of contact with the opposing conductive layer. For
instance, as shown in Figure
ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
Figure 2-2. Determination of X,Y Position
When a point is contacted, it means the two opposing conductive layers come into electrical contact. The x position of actuation can be determined by measuring the output voltage of the y layer. At the same time, the y position can be find out by measuring the x layer. The exact position can be determined by referencing the output voltage to the distance relation- ship.
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