63.3: Fast Switching Surface-Polymer-Assisted IPS Liquid Crystal Displays

2011 ◽  
Vol 42 (1) ◽  
pp. 945-947 ◽  
Author(s):  
Jeoung-Yeon Hwang ◽  
Liang-Chy Chien
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Displays ◽  
Switching Surface ◽  
Fast Switching

Low threshold voltage asymmetric antiferroelectric liquid crystal cells

2006 ◽  
Vol 14 (4) ◽  
Author(s):  
N. Bennis ◽  
A. Spadło ◽  
R. Dąbrowski ◽  
E. Martinelli ◽  
G. Galli ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Surface Segregation ◽  
Liquid Crystal Displays ◽  
Spatial Light Modulators ◽  
Fast Switching ◽  
Light Modulators ◽  
Threshold Voltages ◽  
Low Threshold ◽  
Crystal Cells ◽  
Electrooptical Response

AbstractAsymmetric antiferroelectric liquid crystal displays (AAFLCD) are attractive since they show a very well defined off state and fast switching time. Moreover, they can be driven by a simple biasless DC compensated waveform. The electrooptical response of an AAFLCD allows for new addressing modes, including quasi-static intermediate greyscales maintained without applying a field and passively addressed multiplexed high-frequency displays and spatial light modulators. A new kind of asymmetric cells have been obtained by using fluorinated block copolymer (FBC) alignment, which enhances surface segregation and provides a low energy surface. In this work we combine FBC alignment with antiferroelectric liquid crystal mixtures containing strongly electronegative fluorinated components. Threshold voltages for the antiferroelectric-ferroelectric phase transition as low as 3 volts are observed. We report the time evolution of the shift of the electro-optical response.

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