What happens when segment too hot

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pcbdesigns
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What happens when segment too hot

Post by pcbdesigns » Thu Jun 27, 2019 8:46 pm

What happens to a segment LCD display when it gets too hot?

focus
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Re: What happens when segment too hot

Post by focus » Sun Jul 21, 2019 1:18 am

A Segment display contains a nematic fluid between two layers of ITO glass.

If the fluid gets too cold, it freezes and the display locks up. If the fluid gets to hot, there is a black spot that appears on the screen.

The black spot will go away once the display cools off. It is helpful to run air (use a fan) across the glass to keep the fluid cooler.

It is also possible to use a high temp liquid for higher operating temperatures.

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