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When selecting a Liquid Crystal Display Module or LCD Glass, it is very
important to identify the the range of its environmental temperature.
Standard Liquid Crystal Displays do not have an extremely wide temperature
range, and that range can be effected by solar radiation, ventilation and
extremes at different times of the year. Also, you need to be aware of the
type of backlighting and control circuitry selected can influence the
overall temperature range of the environment.
Another thing to consider that is pertinent to the LCDs temperature range,
is that the contrast of the display will change over that range. Your design
needs to make allowances for this fact by either adding temperature
compensating circuitry to your design, or selecting one of our LCD modules
that already have build in temperature compensation circuitry.
TN Temperature Ranges
The operational and storage
temperature range of a Twisted Nematic (TN) Liquid Crystal Display is
dependant on the drive and voltage of a part. The following parameters are
for general reference.
TN Standard Temperature Range
Operating Temperature: -10°C to +60°C
Storage Temperature: -20°C to +60°C
TN Wide Temperature Range
Operating Temperature: -30°C to +80°C
Storage Temperature: -40°C to +80°C
There are also specially designed TN
LCD that operates at an especially higher temperature (-20 to 105) or lower
temperature (-55 to 85).
STN/FSTN Temperature Ranges
The operational and storage temperature range of a super Twisted Nematic (STN)
and Film compensated STN (FSTN) LCDs are set pretty much into two ranges for
standard products.
STN/FSTN Standard Temperature Range
Operating Temperature: 0°C to +50°C
Storage Temperature: -10°C to +60°C
STN/FSTN Wide Temperature Range
Operating Temperature: -20°C to +70°C
Storage Temperature: -30°C to +80°C
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