AccuTouch Five-Wire Resistive Touchscreens
Elo developed AccuTouch technology with the harshest environments
in mind, so it's no wonder that it excels in reliability, durability,
and expected product life. Impervious to environmental conditions
such as liquid spills and splashes and washdown, these
screens are the most contamination-resistant available. They deliver
drift-free operation for a lifetime of 35 million finger touches.
Benefits
Five-wire resistive is the most accurate and reliable touchscreen
technology. Elo, the inventor of resistive technology, takes five-wire
resistive several steps further with its proprietary AccuTouch touchscreens.
- Stable, drift-free operation
- Broad input flexibility
- Contamination resistance
- Accuracy in high-use applications
- Long product life
- Meets NEMA 4/4x/12 and IP65 standards
 Accuracy Over Time
Thanks to its inherently stable design, Elo AccuTouch five-wire
resistive touchscreens have unmatched accuracy over time. The initial
setup should last the life of the product, because only a two-point
video alignment is required to normalize the touchscreen and video
coordinate systems.
AccuTouch
touchscreens enjoy long-term, drift-free operation because of the
glass substrate processing techniques. The proprietary AccuTouch "Z
border" electrode pattern is not only very narrow and produces
outstanding linearity, but the frit pattern and drive trace lines
are fired into the surface of the glass substrate, becoming stable
and permanent after firing. The linearity characteristics of the
glass, which establishes the linearity of the touchscreen, will
also not change for the life of the product. Other resistive screens
use a thermal or UV-cured silver ink that is silk-screened onto
the glass or plastic substrate. Not being well bonded to the ITO-coated
substrate, it is susceptible to deterioration over time under the
influence of glues and solvents, changing the linearity of the
touchscreen. Other resistive screens also print their drive line
traces on the coversheet layer of the touchscreen (on top of an
insulating layer screened over the ITO layer of the coversheet).
This requires the trace lines to be electrically connected to the
electrode pattern with conductive epoxy at the corners of the screen.
Over time, these trace lines and their conductive epoxy interconnections
deteriorate, also affecting linearity.
 Since the AccuTouch touchscreen is linear and accurate by design
and construction, any AccuTouch controller is completely interchangeable
with any AccuTouch touchscreen. Other resistive touchscreens use
electrode patterns and lower quality coatings that don't produce
an inherently linear touchscreen. They must rely on a multipoint
linearization scheme, forcing the controller to interpolate data
received from the touchscreen between adjacent linearization points.
This scheme typically employs an NVRAM chip embedded in the extension
cable from the touchscreen or on the controller card. Not being
inherently linear, other touchscreens are not interchangeable with
the controller unless the cable with the NVRAM chip is included
or an extensive multipoint linearization scheme is re-executed.
Durability
An enhanced, scratch-resistant hardcoat gives AccuTouch touchscreens
unparalleled protection against damage, even in the harshest industrial
environments. Elo touchscreens have been operationally tested
to over 35 million touches in one location with a stylus similar
to a finger, making them ideal for heavy-usage environments.
AccuTac Coversheet Adhesive System
With the tightest fit available, the Elo proprietary AccuTac coversheet
adhesive system is used on all AccuTouch touchscreens. It provides
multidirectional "hold down" of the coversheet to the
glass, allowing the coversheet to expand and contract with changes
in the environment while keeping it flat and under tension. It works like the springs on a trampoline.
The coversheet can expand and contract with changes in the environment
(X and Y axes) yet remain under tension on a fixed flat plane (Z
axis). The horizontal coversheet tension is unique in the industry
and allows AccuTouch touchscreens to provide the tightest coversheet
fit available. Other resistive screens, which only employ pressure-sensitive
adhesives, can loosen over the life of the product and develop
"puffiness" or "ripples" with changes in temperature
and humidity.
Contamination Proof
AccuTouch touchscreens are the most contamination-resistant screens
available, as they are sealed against contamination
and moisture. This prevents fluid ingress through
the air vent or along the edges due to capillary action if the
outer seal to the display degrades over time.
Superb Optics
AccuTouch touchscreen optics are influenced primarily by the
resistive coating on the glass substrate, the conductive coating
on the back of the coversheet, and the antiglare treatment on the
front of the coversheet. The coatings on the glass and coversheet
have an impact on light transmission. The antiglare treatment on
the coversheet impacts gloss diffusion and visual resolution. AccuTouch
HL (High Light) touchscreens provide high light transmission, because
the coatings on the glass and coversheet are ITO (indium tin oxide).
ITO coatings are extremely transparent and offer the electrical
properties required for resistive touchscreens.
Cable Construction and Attachment
Even the AccuTouch cabling system is unique. It is copper soldered
to the fired-on frit pattern, has integral polymer strain relief,
uses a copper flex circuit as opposed to ink (extension of coversheet),
is low resistance so the cable length does not upset the design
of the touchscreen, and importantly, may be folded and creased.
Complete Solution: Screen, Controller or Chip, Software Driver
The AccuTouch COACh (Controller On A Chip) is a cost-effective
single-chip solution, compatible with Elo AccuTouch and AT4 touchscreens
and all Elo touchscreen drivers.
Elo develops all screens, controllers, chips, and software drivers
in-house. Compare the complete Elo solution with other screen manufacturers
who use third-party controllers and drivers. Incorrect coordinates
due to light touches, skips, varying separator dots or resistance
of coatings, and drift over time are not a concern. With Elo there
is no finger pointing at different manufacturers if a problem arises.
Experience of the Leader in Touch
Elo invented and perfected resistive touchscreens. For nearly 40
years, Elo AccuTouch resistive touchscreen technology has led the
industry with the largest application and experience base of any
manufacturer.
Application Ready
AccuTouch technology is the workhorse of resistive touchscreens, providing unsurpassed
performance in POS, industrial, medical, and transportation applications. Touch the screen
with a finger, gloved hand, fingernail, or object such as a credit card, and you'll
receive a fast, accurate response every time.
Point-of-Sale Solutions
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Fine Dining
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Fast Food
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Hospitality
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Lodging
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Vending
- Lottery Terminals
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General Retail
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Grocery/Convenience
Industrial Solutions
- Process Control
- Food Processing
Equipment
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Machine Control
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Industrial PCs
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Man-Machine Interface
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Office Automation Equipment
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Automated Testing
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Automobile Test Equipment
Transportation Solutions
- In-vehicle Use
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Baggage Handling
Medical Solutions
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Medical Instrumentation
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Patient Monitoring Systems
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Medical Equipment
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Research Instrumentation
Pricing
For pricing information, please:
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