The working temperature range of LCD screen is divided into: normal temperature 0-50℃, wide temperature -20-70℃, ultra-wide temperature -30-80℃, some customers will choose -40℃ very special materials to design. So, can the LCD screen still work normally at extreme temperatures?

In fact, this question is a bit ambiguous. We know that, for example, the working range of wide temperature is -20-70℃, then first of all, in the environment below minus 20℃ and higher than 70℃, the LCD screen cannot work theoretically. If the temperature has not reached 70℃ and minus 20℃, but it is very close, it can be said to be the limit temperature, can the LCD screen still work normally?

This problem is also a question raised by many customers. Many customers use a wide-temperature LCD screen. When the temperature is very low, the characters become very light, and when the temperature is very high, the characters become very deep. What's going on here?

From the principle of the LCD screen, it is very easy to explain. The reason why the LCD screen can display various patterns or pen segments is because the liquid crystal in the liquid crystal box is working, and the liquid crystal, as the name implies, is liquid and must be affected by the environment, when the temperature is high, the liquid crystal will heat up, the flow speed will increase, and the feedback on the display is that the color will become very dark, and when the temperature is low, the liquid crystal will begin to crystallize, the flow will slow down, and the color on the display will become very dark. Shallow, not that it cannot be displayed normally, but that the normal time is much slower than that at room temperature.

So everyone should be able to understand, the working temperature is from the LCD screen, it just means that it can work within this temperature range, and it will not be displayed or refreshed due to environmental factors.

Taking the wide temperature LCD screen as an example, starting from minus 5℃ and 50℃ above zero, the display rate will begin to change. When it reaches minus 20℃ and 70℃ above zero, it will reach the limit temperature, and the feedback to the screen will be zero. If the display is completely dark, it can no longer be used, so SINDA usually advises customers that if the actual use temperature is already close to the limit temperature, they must choose an LCD screen with a wider temperature range to use.