Products - Touch Screens
A touch panel or touchscreen is a touch-sensitive transparent
screen mounted in front of an LCD. It provides a way for a
person to interact with an electronic system. Typically the
system will display several icons on the LCD and expect the
user to select one by touching it. The touch causes some measurable
phenomena which is converted by a controller IC into screen
coordinates which are sent into the system. The system then
determines which icon was selected and takes appropriate action.
The phrases Touch Screen and Touch Panel mean the same thing
and are interchangeable.
Orient Display is the main supplier of touch screens in the
field of PDAs and calculators. Small TN, STN LCDs are especially
well suited for handheld devices, where interaction is required
but keyboards are impractical Touchscreens are so often used.
There are several physical phenomena which can be used to
detect a touch including capacitive, infrared, resistive and
surface acoustic wave(SAW). Resistive touchscreens are the
most common because they are simple, low cost and can be activated
by finger tip or any type of stylus. Most of Orient Display
products are resistive type. Capacitive technology offers
higher transparency at a higher cost. Surface acoustic wave
technology requires more border, more power and a touch by
finger, but gives more durability for public access applications.
Among resistive touch screens, the 4 wire method is most common,
and the 5 wire less so. 8 wire resistive is a variation on
4 wire and 6 wire and 7 wire are variants of the 5 wire method.
For more details of our touch panels, please
contact us (please make a link to services@orientdisplay.com)
Office in North America
Orient Display (North America) Limited
145 Royal Crest Court, Unit 42,
Markham, Ontario, Canada
L3R 9Z4
Tel: (905) 477-1166 Fax: (905) 477-1782
Email: services@orientdisplay.com
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