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Pursuing High Quality Phase-Only Liquid Crystal on Silicon (LCoS) Devices

Liquid-Crystal-on-Silicon for Augmented Reality Displays

College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
Snail Innovation Institute, San Jose, CA 95112, USA
Key Laboratory of Applied Surface and Colloid Chemistry, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710119, China
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(12), 2366;
Received: 30 October 2018 / Revised: 19 November 2018 / Accepted: 20 November 2018 / Published: 23 November 2018
In this paper, we review liquid-crystal-on-silicon (LCoS) technology and focus on its new application in emerging augmented reality (AR) displays. In the first part, the LCoS working principles of three commonly adopted LC modes—vertical alignment and twist nematic for amplitude modulation, and homogeneous alignment for phase modulation—are introduced and their pros and cons evaluated. In the second part, the fringing field effect is analyzed, and a novel pretilt angle patterning method for suppressing the effect is presented. Moreover, we illustrate how to integrate the LCoS panel in an AR display system. Both currently available intensity modulators and under-developing holographic displays are covered, with special emphases on achieving high image quality, such as a fast response time and high-resolution. The rapidly increasing application of LCoS in AR head-mounted displays and head-up displays is foreseeable. View Full-Text
Keywords: liquid-crystal-on-silicon; fringing field effect; augmented reality displays; head-mounted displays; head-up displays liquid-crystal-on-silicon; fringing field effect; augmented reality displays; head-mounted displays; head-up displays
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MDPI and ACS Style

Huang, Y.; Liao, E.; Chen, R.; Wu, S.-T. Liquid-Crystal-on-Silicon for Augmented Reality Displays. Appl. Sci. 2018, 8, 2366.

AMA Style

Huang Y, Liao E, Chen R, Wu S-T. Liquid-Crystal-on-Silicon for Augmented Reality Displays. Applied Sciences. 2018; 8(12):2366.

Chicago/Turabian Style

Huang, Yuge, Engle Liao, Ran Chen, and Shin-Tson Wu. 2018. "Liquid-Crystal-on-Silicon for Augmented Reality Displays" Applied Sciences 8, no. 12: 2366.

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