Zytronic ZXY100, Integration Manual

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PG 11 ZYTRONIC PROJECTED CAPACITIVE ZXY100/110
®
TOUCH CONTROLLER & SENSOR INTEGRATION MANUAL ISSUE 1
ZYTRONIC
FIGURE 6 FOAM GASKET APPLIED TO LCD TO PROVIDE AIR GAP BETWEEN LCD AND SENSOR
If the sensor is only to be fitted to the LCD temporarily and kept horizontal, a single sided,
electrically non-conductive, low performance gasket can be used, such as EPDM (Ethylene
Propylene Diene Monomer) foam sealing strip, as shown in Figure 7. For permanent
applications, or where the weight of the sensor is to be held only by the gasket, a higher
performance gasket such as 3M VHB tape can be used. This will normally require the gasket
to be built up to the correct thickness with several layers.
Different VHB tapes are available depending on the material of the surfaces it is adhering to.
Any gasket used must be non-sulphurous and maintain its adhesion at any temperature that
it may be subjected to in service.
FIGURE 7
GASKET APPLIED TO THE LCD PERIMETER
The sensor should be positioned on the LCD with the sensor active area (as defined on the
Zytronic product drawing) centred on the LCD display area. The glass face (with ‘Viewing
Face’ label) should be visible, as shown in Figure 8. The sensor can be positioned as shown or
rotated by 180 degrees (so that the flexible cables are on the top edge). The position should be
chosen which gives the best clearance for mounting the controller PCB on the rear of the LCD.
Sensor designs are also available with the flexible cables in alternative positions. If required, the
sensor can be cleaned on the front (glass) face and rear (polyester) face with a glass cleaning
solution and a soft lint-free cloth.
FOAM GASKET