Opto-Electronics


LCDs suitable for super low temperatures

3 October 2007 Opto-Electronics

AZ Displays has produced an LCD module that can survive temperatures as low as -40°C.

This solution not only enables LCD operation at extremely low temperatures, it also spares a user from having to adjust contrast as the temperature changes. The technology utilises a special heater made of a sheet of ITO glass that is placed next to the LCD. The heater is connected to the PCB by metal pins and is controlled by a thermistor, which automatically turns on the heater at -7 to -9°C.

These displays require an additional power supply of about 20 V besides the conventional voltage (normally 4,5 V) for the built-in LCD controller. Heater-based LCD modules can be used in a wide range of outdoor applications such as gas pumps, vending machines, payphones, automotive and military equipment.

For more information contact Larry Gordon, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected], www.arrow.altech.co.za



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