What kind of liquid in LCD?

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Opensource
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What kind of liquid in LCD?

Post by Opensource » Thu Jun 27, 2019 8:43 pm

What types of fluid is there in a LCD?

focus
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What kind of liquid in LCD?

Post by focus » Wed Aug 21, 2019 11:25 pm

There are several different types of LCDs. If we narrow it down to monochrome displays, then there are three types of fluids.

Here is an article https://focuslcds.com/journals/what-are ... uid-types/with more details, but below is a quick overview

TN (twisted nematic) is the most common fluid used in static and multiplexed displays. The TN technology comes in one coloration - black characters on a gray background. It is the least expensive and has the lowest visual quality, primarily in viewing angle. TN also has the best response time of the fluid types.

STN (super twisted nematic) is the most common fluid among monochrome LCD’s. STN comes in two colorations – dark blue characters on a gray background and dark gray/black characters on a yellow/green background. This is a middle priced fluid type with very good visual quality and contrast similar to the TN.The response time of an STN display is moderate.

FSTN (film compensated super twisted nematic) is the most recent advance to be introduced. FSTN uses STN fluid with the addition of a compensating film which attains a higher contrast and larger viewing angle. The higher contrast supplied by an FSTN allows for a black and white display effect which also makes it the most expensive fluid type.

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