Fast response time of micropixels with in-plane switching of positive liquid crystals using crossed patterned electrodes

• Main Authors: Clément Abélard, Aurélien Suhm, Benoit Racine, Umberto Rossini, François Templier
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2019-07-01
• Series: Journal of Information Display
• Subjects: In-plane switching; micropixel; electrical turn-off; crossed patterned electrodes; Faraday cage effect
• Online Access: http://dx.doi.org/10.1080/15980316.2019.1642965

Demonstrated herein is a fast in-plane switching (IPS) cell with positive dielectric anisotropy liquid crystals using crossed patterned electrodes in three different conditions. The ineffectiveness of one of these three structures due to the ‘Faraday cage’ effect was shown. With another structure, a fast response time was also shown to be impossible to achieve due to several contrast issues. In the third structure, a fast response time was achieved due to a combination of high-driving and crossed patterned electrodes allowing fast turn-off. Two of the three structures was manufactured. With the first one, an experiment confirmed the ‘Faraday cage’ effect. In the second structure, a response time four to eight times faster than the conventional IPS mode was experimentally demonstrated using two different kinds of liquid crystal.