What's the difference between DSTN displays and TFT displays?

The less expensive DSTN (double-layer super twist nematic) is a passive-matrix display. The TFT (thin film transistor) display is active matrix. The cheaper dual-scan screen is not as bright, readable, or fast as the active matrix screen.

While the DSTNs are still good screens, if you move your mouse too fast, you'll notice that it disappears. That's because the DSTN has a lower screen refresh rate. Also, you can't read DSTN screens at a wide angle.

A TFT active matrix screen can be read at almost 180 degrees. To be able to read a passive matrix DSTN screen, you need to be right in front of the display. A shallow viewing angle isn't always a bad thing.

Some people prefer the passive matrix screens for privacy reasons. For example, if you do a lot of traveling on airplanes, you probably don't want your seatmate reading everything on your screen. You can just compare two types of screens and see if you can tolerate the less expensive one.

If you're happy with it, that's all that ... more.

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