HTN (High-Twist Nematic) Technology:
- HTN is a variation of the Twisted Nematic (TN) LCD technology. The difference is that in HTN, the liquid crystal molecules are more highly twisted than in a standard TN display. This allows for a higher contrast ratio and better readability compared to regular TN LCDs.
- HTN displays provide improved viewing angles compared to regular TN technology, though they are still limited compared to more advanced technologies like IPS (In-Plane Switching).

Blue Color:
- Blue in the name likely refers to the backlight color or the color of the segments when they are lit. Most segment displays are monochromatic, and the blue color is often used because it provides a bright, vibrant contrast to a darker background.
- Alternatively, the display may use blue or cyan-colored characters (or light segments) on a dark background or use blue as a common LED backlight color for the display.

LCD Structure:
- HTN LCDs often use either a positive or negative display mode, depending on the configuration. In the positive mode, the background is typically light, and the characters or segments are dark. In the negative mode, the background is dark, and the segments appear bright.
- In HTN Blue LCDs, the display can have a blue backlight with either blue text/segments or dark background with illuminated blue segments.

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