How to achieve LCD Display is working at low temperatures

Achieve a liquid crystal display using an external heater work at low temperatures, compared with the built-in heating and increasing the drive voltage method, this method is simple, without the liquid crystal display to be demolished, to improve the reliability of the display, you can achieve a liquid crystal display in the low temperature range. Working in very low temperatures in liquid crystal display range we call low temperature lcd display. When the ambient temperature change can automatically control the display box, no manual control, environmental adaptability. In the case of -40 ℃, when the heater heating voltage is + 20V, simply heating a lcd modules 6 to 8 minutes to work properly. If + 12V heating, the heating is working properly monitor, the average power of the heater temperature by the external environment, the lower the temperature for 15 minutes, then the greater function average heating power.