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The twisted nematic effect (TN-effect) was a major technological breakthrough that made the manufacture of large, thin liquid crystal displays practical and cost competitive. Unlike earlier flat-panel displays, TN-cells did not require a current to flow for operation and used low operating voltages suitable for use with batteries.
The twisted nematic (TN) display is one of the oldest and frequently cheapest kind of liquid crystal display technologies. TN displays have fast pixel response times and less smearing than other types of LCDs like IPS displays, but suffer from poor color reproduction and limited viewing angles, especially in the vertical direction. When viewed ...
A STN (super-twisted nematic) display is a type of liquid-crystal display (LCD). An LCD is a flat-panel display that uses liquid crystals to change its properties when exposed to an electric field, which can be used to create images. This change is called the twisted nematic (TN) field effect. Earlier TN displays twisted the liquid crystal ...
twisted configurations with dichroic dyes twisted nematic field-effect, [2] TN supertwisted nematic effects, STN, the total twist is > 90° SBE (supertwisted birefringence effect) [3] DSTN: double layer STN effect FSTN: foil-compensated supertwisted nematic effect (foil = retarder sheet) in-plane switching effects, IPS [4]
On December 4, 1970, the twisted nematic field effect (TN) in liquid crystals was filed for patent by Hoffmann-LaRoche in Switzerland, (Swiss patent No. 532 261 Archived March 9, 2021, at the Wayback Machine) with Wolfgang Helfrich and Martin Schadt (then working for the Central Research Laboratories) listed as inventors. [24]
Alabama drove all the way down to the Tennessee 14 on the very next series, but two straight Milroe overthrows in the end zone forced the Tide to settle for a go-ahead field goal to put the game ...
1984 Super-twisted nematic display (STN LCD) to improve passive-matrix LCDs, allowing for the first time higher resolution panels with 540x270 pixels. Prototype Brown Boveri STN LCD with 540x270 pixels
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