Touch Screen Products; Touchscreen - Hatteland HD 12T04 SERIES User Manual

Touch screen products

Introduction to products with touch screen
Both Resistive and Capacitive touch screen solutions are used for our products. Please review specifications found in
this manual or our website (www.hatteland-display.com) to find your exact type number and then determine if it uses
Resistive or Capacitive.
Capacitive Touch screen
The glass overlay has a coating that stores the charge deposited over its surface electrically. It will not operate with
either a gloved hand or with a mechanical stylus. Capacitive touch screens operate by applying a small amount of
voltage to each corner of the touch screen. When the screen is touched by a human finger it draws a minute amount
of current to the X,Y point of contact. This location is calculated by the touch screen controller and transmitted back to
the computer connected to the touch screen controller.
CAPACITIVE - Brief Specifications
Subject
Construction
Positional Accurancy
Touch Contact Requirements
Enduarance Tested
Cleaning
Liquid Resistance
Light Transmission
Resistive Touch screen
It 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. The resistive touch screens
are anti-glare to reduce reflective shine intensity, which will slightly diffuse the light output throughout the screen.
Resistive technology activation can be initiated by; a gloved hand, fingernail, mechanical stylus or an ungloved finger.
RESISTIVE - Brief Specifications
Subject
Construction
Positional Accurancy
Touch Activation Force
Expected Life Performance
Cleaning
Chemical Resistance
(Exposed for one hour)
Light Transmission

Touchscreen

IND100110-1
Top: ClearTek protective overcoat protects the sensors and increase durability.
Inside: Electrode X/Y grid pattern and conductive coating.
Bottom: Glass and conductive coating.
Small amount of voltage is applied to the four corners for measuring X and Y coordinates of the touch point.
Reported touch coordinates are within 1.0% of true position. (Based on viewing area dimensions)
3 ms for finger input.
More than 225 million touches in one location without noticable degradation to the surface.
Water, isopropyl, alcohol, and similar non-abrasive cleaners.
Liquids on screen does not impede touchscreen performance.
Up to 88% at 550 nm; dependant on specific surface finish chosen.
Top: Polyester with outside hard-surface coating with clear or anti-glare finish.
Inside: Transparent conductive coating.
Bottom: Glass substrate with uniform conductive coating.
Top and bottom layers separated by separator dots.
Standard deviation of error is less than +- 0.080-inch (2mm).
Typically 57 to 133 g
More than 35 million touches in one location without failure, using a stylus similar to a finger.
Water, isopropyl, alcohol, and similar non-abrasive cleaners.
Acetone, Common food and beverages, Hexane, Isopropyl alcohol, Methylene chloride, Methyl ethyl ketone,
Mineral spirits, Turpentine
Typically 75% over visible light spectrum.
Details
Details
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