Preparation and characterization of novel polyimide with chiral side chain for twist nematic liquid crystal display

2011 ◽  
Vol 120 (6) ◽  
pp. 3265-3277 ◽  
Author(s):  
Kulthida Sukchol ◽  
Supakanok Thongyai ◽  
Piyasan Praserthdam
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Display ◽  
Side Chain

Optical Characterization of the Twisted Nematic Liquid Crystal Display

2009 ◽  
Vol 1242 ◽  
Author(s):  
Carolina Rickenstorff ◽  
A. S. Ostrovsky
Keyword(s):  
Liquid Crystal ◽  
Interference Pattern ◽  
Nematic Liquid Crystal ◽  
Phase Modulation ◽  
Liquid Crystal Display ◽  
Optical Characterization ◽  
Gray Level ◽  
Twisted Nematic ◽  
Twisted Nematic Liquid Crystal

ABSTRACTA simple optical characterization technique is developed for to find the amplitude and phase modulation modes for the twisted nematic liquid crystal display (TN-LCD). The developed technique is based on intensity and pixel shift measurements of the interference pattern obtained from the TN-LCD sandwiched between two polarizers in a modified Young's experiment. Particularly, specimen LC2002 Holoeye is characterized and its amplitude and phase modulation curves as a function of image's gray level, bright B and contrast C are presented.

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