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Anti-Glare Resistive Touch Screens
for Industrial CRT and Flat Panel LCD Display Systems
Resistive touch screen technology
is recommended for use in POS (Point of Sale): Grocery Stores,
Hotels, Restaurants and Retail Stores; Industrial Applications:
MMI (Man Machine Interface), Machine and Process Control;
Portable Devices; Personal Information Management Systems;
Transportation Solutions; Medical Solutions: Equipment, Instrumentation
and Patient Monitoring Systems. Resistive technology generally
uses a display overlay composed of layers, each with a conductive
coating on the interior surface. Special separator "dots"
are distributed evenly across the active area and separate
the conductive interior layers. The pressure from using either
a mechanical stylus or finger produces an internal electrical
contact at the "action point" which supplies the
controller with vertical and horizontal analog voltages for
data input. To reduce parallax for older "curved"
CRT applications only, resistive touchscreens are generally
spherical to match the curvature of the CRT (true flat resistive
touch overlays are also available for TFT flat panels
and/or CRTs). Our resistive touchscreens are anti-glare
to reduce reflective shine intensity, which will slightly
diffuse the light output throughout the screen. Resistive
technology offers tremendous versatility in that activation
can be initiated by; a gloved hand, fingernail, mechanical
stylus or an ungloved finger. Resistive touch screens
can be gasket sealed for NEMA 4 and NEMA 4X
environments. Limitations include: Low light output, diffused
resolution images and the a plastic surface material can be
scratched if improperly touched. VarTech offers a variety
of resistive touch screen displays many are available
with an optional sunlight readable touch screen.
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